ENH: Update Curl to 7.16.1

1 files changed, 2827 insertions, 1737 deletions

diff --git a/Utilities/cmcurl/ftp.c b/Utilities/cmcurl/ftp.c
index 2501412..378cd7f 100644
--- a/Utilities/cmcurl/ftp.c
+++ b/Utilities/cmcurl/ftp.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -29,18 +29,14 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <ctype.h>
-#include <errno.h>
 
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif
 
-#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
+#ifdef WIN32
 
-#else /* some kind of unix */
+#else /* probably some kind of unix */
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
@@ -51,7 +47,9 @@
 #ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
 #endif
+#ifdef HAVE_UTSNAME_H
 #include <sys/utsname.h>
+#endif
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif
@@ -61,10 +59,6 @@
 #endif
 #endif
 
-#if defined(WIN32) && defined(__GNUC__) || defined(__MINGW32__)
-#include <errno.h>
-#endif
-
 #if (defined(NETWARE) && defined(__NOVELL_LIBC__))
 #undef in_addr_t
 #define in_addr_t unsigned long
@@ -73,6 +67,7 @@
 #include <curl/curl.h>
 #include "urldata.h"
 #include "sendf.h"
+#include "easyif.h" /* for Curl_convert_... prototypes */
 
 #include "if2ip.h"
 #include "hostip.h"
@@ -83,17 +78,20 @@
 #include "ftp.h"
 
 #ifdef HAVE_KRB4
-#include "security.h"
 #include "krb4.h"
 #endif
 
 #include "strtoofft.h"
 #include "strequal.h"
-#include "ssluse.h"
+#include "sslgen.h"
 #include "connect.h"
 #include "strerror.h"
-#include "curl_memory.h"
+#include "memory.h"
 #include "inet_ntop.h"
+#include "select.h"
+#include "parsedate.h" /* for the week day and month names */
+#include "sockaddr.h" /* required for Curl_sockaddr_storage */
+#include "multiif.h"
 
 #if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
 #include "inet_ntoa_r.h"
@@ -116,30 +114,43 @@
 /* Local API functions */
 static CURLcode ftp_sendquote(struct connectdata *conn,
                               struct curl_slist *quote);
-static CURLcode ftp_cwd(struct connectdata *conn, char *path);
-static CURLcode ftp_mkd(struct connectdata *conn, char *path);
-static CURLcode ftp_cwd_and_mkd(struct connectdata *conn, char *path);
 static CURLcode ftp_quit(struct connectdata *conn);
-static CURLcode ftp_3rdparty_pretransfer(struct connectdata *conn);
-static CURLcode ftp_3rdparty_transfer(struct connectdata *conn);
-static CURLcode ftp_regular_transfer(struct connectdata *conn);
-static CURLcode ftp_3rdparty(struct connectdata *conn);
+static CURLcode ftp_parse_url_path(struct connectdata *conn);
+static CURLcode ftp_regular_transfer(struct connectdata *conn, bool *done);
+static void ftp_pasv_verbose(struct connectdata *conn,
+                             Curl_addrinfo *ai,
+                             char *newhost, /* ascii version */
+                             int port);
+static CURLcode ftp_state_post_rest(struct connectdata *conn);
+static CURLcode ftp_state_post_cwd(struct connectdata *conn);
+static CURLcode ftp_state_quote(struct connectdata *conn,
+                                bool init, ftpstate instate);
+static CURLcode ftp_nb_type(struct connectdata *conn,
+                            bool ascii, ftpstate state);
+static int ftp_need_type(struct connectdata *conn,
+                         bool ascii);
 
 /* easy-to-use macro: */
-#define FTPSENDF(x,y,z) if((result = Curl_ftpsendf(x,y,z))) return result
+#define FTPSENDF(x,y,z)    if ((result = Curl_ftpsendf(x,y,z)) != CURLE_OK) \
+                              return result
+#define NBFTPSENDF(x,y,z)  if ((result = Curl_nbftpsendf(x,y,z)) != CURLE_OK) \
+                              return result
 
-static void freedirs(struct FTP *ftp)
+static void freedirs(struct connectdata *conn)
 {
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+
   int i;
-  if(ftp->dirs) {
-    for (i=0; i < ftp->dirdepth; i++){
-      if(ftp->dirs[i]) {
-        free(ftp->dirs[i]);
-        ftp->dirs[i]=NULL;
+  if(ftpc->dirs) {
+    for (i=0; i < ftpc->dirdepth; i++){
+      if(ftpc->dirs[i]) {
+        free(ftpc->dirs[i]);
+        ftpc->dirs[i]=NULL;
       }
     }
-    free(ftp->dirs);
-    ftp->dirs = NULL;
+    free(ftpc->dirs);
+    ftpc->dirs = NULL;
   }
   if(ftp->file) {
     free(ftp->file);
@@ -147,6 +158,17 @@ static void freedirs(struct FTP *ftp)
   }
 }
 
+/* Returns non-zero if the given string contains CR (\r) or LF (\n),
+   which are not allowed within RFC 959 <string>.
+   Note: The input string is in the client's encoding which might
+   not be ASCII, so escape sequences \r & \n must be used instead
+   of hex values 0x0d & 0x0a.
+*/
+static bool isBadFtpString(const char *string)
+{
+  return (bool)((NULL != strchr(string, '\r')) || (NULL != strchr(string, '\n')));
+}
+
 /***********************************************************************
  *
  * AllowServerConnect()
@@ -158,8 +180,7 @@ static void freedirs(struct FTP *ftp)
  */
 static CURLcode AllowServerConnect(struct connectdata *conn)
 {
-  fd_set rdset;
-  struct timeval dt;
+  int timeout_ms;
   struct SessionHandle *data = conn->data;
   curl_socket_t sock = conn->sock[SECONDARYSOCKET];
   struct timeval now = Curl_tvnow();
@@ -167,10 +188,6 @@ static CURLcode AllowServerConnect(struct connectdata *conn)
   long timeout = data->set.connecttimeout?data->set.connecttimeout:
     (data->set.timeout?data->set.timeout: 0);
 
-  FD_ZERO(&rdset);
-
-  FD_SET(sock, &rdset);
-
   if(timeout) {
     timeout -= timespent;
     if(timeout<=0) {
@@ -179,11 +196,11 @@ static CURLcode AllowServerConnect(struct connectdata *conn)
     }
   }
 
-  /* we give the server 60 seconds to connect to us, or a custom timeout */
-  dt.tv_sec = (int)(timeout?timeout:60);
-  dt.tv_usec = 0;
+  /* We allow the server 60 seconds to connect to us, or a custom timeout.
+     Note the typecast here. */
+  timeout_ms = (timeout?(int)timeout:60) * 1000;
 
-  switch (select(sock+1, &rdset, NULL, NULL, &dt)) {
+  switch (Curl_select(sock, CURL_SOCKET_BAD, timeout_ms)) {
   case -1: /* error */
     /* let's die here */
     failf(data, "Error while waiting for server connect");
@@ -195,17 +212,19 @@ static CURLcode AllowServerConnect(struct connectdata *conn)
   default:
     /* we have received data here */
     {
-      curl_socket_t s;
-#ifdef __hpux
-      int size = sizeof(struct sockaddr_in);
+      curl_socket_t s = CURL_SOCKET_BAD;
+#ifdef ENABLE_IPV6
+      struct Curl_sockaddr_storage add;
 #else
-      socklen_t size = sizeof(struct sockaddr_in);
-#endif
       struct sockaddr_in add;
+#endif
+      socklen_t size = (socklen_t) sizeof(add);
 
-      getsockname(sock, (struct sockaddr *) &add, &size);
-      s=accept(sock, (struct sockaddr *) &add, &size);
+      if(0 == getsockname(sock, (struct sockaddr *) &add, &size)) {
+        size = sizeof(add);
 
+        s=accept(sock, (struct sockaddr *) &add, &size);
+      }
       sclose(sock); /* close the first socket */
 
       if (CURL_SOCKET_BAD == s) {
@@ -224,6 +243,182 @@ static CURLcode AllowServerConnect(struct connectdata *conn)
   return CURLE_OK;
 }
 
+/* initialize stuff to prepare for reading a fresh new response */
+static void ftp_respinit(struct connectdata *conn)
+{
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  ftpc->nread_resp = 0;
+  ftpc->linestart_resp = conn->data->state.buffer;
+}
+
+/* macro to check for the last line in an FTP server response */
+#define lastline(line) (ISDIGIT(line[0]) && ISDIGIT(line[1]) && \
+                        ISDIGIT(line[2]) && (' ' == line[3]))
+
+static CURLcode ftp_readresp(curl_socket_t sockfd,
+                             struct connectdata *conn,
+                             int *ftpcode, /* return the ftp-code if done */
+                             size_t *size) /* size of the response */
+{
+  int perline; /* count bytes per line */
+  bool keepon=TRUE;
+  ssize_t gotbytes;
+  char *ptr;
+  struct SessionHandle *data = conn->data;
+  char *buf = data->state.buffer;
+  CURLcode result = CURLE_OK;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  int code = 0;
+
+  if (ftpcode)
+    *ftpcode = 0; /* 0 for errors or not done */
+
+  ptr=buf + ftpc->nread_resp;
+
+  perline= (int)(ptr-ftpc->linestart_resp); /* number of bytes in the current
+                                              line, so far */
+  keepon=TRUE;
+
+  while((ftpc->nread_resp<BUFSIZE) && (keepon && !result)) {
+
+    if(ftpc->cache) {
+      /* we had data in the "cache", copy that instead of doing an actual
+       * read
+       *
+       * ftp->cache_size is cast to int here.  This should be safe,
+       * because it would have been populated with something of size
+       * int to begin with, even though its datatype may be larger
+       * than an int.
+       */
+      memcpy(ptr, ftpc->cache, (int)ftpc->cache_size);
+      gotbytes = (int)ftpc->cache_size;
+      free(ftpc->cache);    /* free the cache */
+      ftpc->cache = NULL;   /* clear the pointer */
+      ftpc->cache_size = 0; /* zero the size just in case */
+    }
+    else {
+      int res = Curl_read(conn, sockfd, ptr, BUFSIZE-ftpc->nread_resp,
+                          &gotbytes);
+      if(res < 0)
+        /* EWOULDBLOCK */
+        return CURLE_OK; /* return */
+
+#ifdef CURL_DOES_CONVERSIONS
+      if((res == CURLE_OK) && (gotbytes > 0)) {
+        /* convert from the network encoding */
+        result = res = Curl_convert_from_network(data, ptr, gotbytes);
+        /* Curl_convert_from_network calls failf if unsuccessful */
+      }
+#endif /* CURL_DOES_CONVERSIONS */
+
+      if(CURLE_OK != res)
+        keepon = FALSE;
+    }
+
+    if(!keepon)
+      ;
+    else if(gotbytes <= 0) {
+      keepon = FALSE;
+      result = CURLE_RECV_ERROR;
+      failf(data, "FTP response reading failed");
+    }
+    else {
+      /* we got a whole chunk of data, which can be anything from one
+       * byte to a set of lines and possible just a piece of the last
+       * line */
+      int i;
+
+      conn->headerbytecount += gotbytes;
+
+      ftpc->nread_resp += gotbytes;
+      for(i = 0; i < gotbytes; ptr++, i++) {
+        perline++;
+        if(*ptr=='\n') {
+          /* a newline is CRLF in ftp-talk, so the CR is ignored as
+             the line isn't really terminated until the LF comes */
+
+          /* output debug output if that is requested */
+          if(data->set.verbose)
+            Curl_debug(data, CURLINFO_HEADER_IN,
+                       ftpc->linestart_resp, (size_t)perline, conn);
+
+          /*
+           * We pass all response-lines to the callback function registered
+           * for "headers". The response lines can be seen as a kind of
+           * headers.
+           */
+          result = Curl_client_write(conn, CLIENTWRITE_HEADER,
+                                     ftpc->linestart_resp, perline);
+          if(result)
+            return result;
+
+          if(perline>3 && lastline(ftpc->linestart_resp)) {
+            /* This is the end of the last line, copy the last line to the
+               start of the buffer and zero terminate, for old times sake (and
+               krb4)! */
+            char *meow;
+            int n;
+            for(meow=ftpc->linestart_resp, n=0; meow<ptr; meow++, n++)
+              buf[n] = *meow;
+            *meow=0; /* zero terminate */
+            keepon=FALSE;
+            ftpc->linestart_resp = ptr+1; /* advance pointer */
+            i++; /* skip this before getting out */
+
+            *size = ftpc->nread_resp; /* size of the response */
+            ftpc->nread_resp = 0; /* restart */
+            break;
+          }
+          perline=0; /* line starts over here */
+          ftpc->linestart_resp = ptr+1;
+        }
+      }
+      if(!keepon && (i != gotbytes)) {
+        /* We found the end of the response lines, but we didn't parse the
+           full chunk of data we have read from the server. We therefore need
+           to store the rest of the data to be checked on the next invoke as
+           it may actually contain another end of response already! */
+        ftpc->cache_size = gotbytes - i;
+        ftpc->cache = (char *)malloc((int)ftpc->cache_size);
+        if(ftpc->cache)
+          memcpy(ftpc->cache, ftpc->linestart_resp, (int)ftpc->cache_size);
+        else
+          return CURLE_OUT_OF_MEMORY; /**BANG**/
+      }
+    } /* there was data */
+
+  } /* while there's buffer left and loop is requested */
+
+  if(!result)
+    code = atoi(buf);
+
+#ifdef HAVE_KRB4
+  /* handle the security-oriented responses 6xx ***/
+  /* FIXME: some errorchecking perhaps... ***/
+  switch(code) {
+  case 631:
+    Curl_sec_read_msg(conn, buf, prot_safe);
+    break;
+  case 632:
+    Curl_sec_read_msg(conn, buf, prot_private);
+    break;
+  case 633:
+    Curl_sec_read_msg(conn, buf, prot_confidential);
+    break;
+  default:
+    /* normal ftp stuff we pass through! */
+    break;
+  }
+#endif
+
+  *ftpcode=code; /* return the initial number like this */
+
+
+  /* store the latest code for later retrieval */
+  conn->data->info.httpcode=code;
+
+  return result;
+}
 
 /* --- parse FTP server responses --- */
 
@@ -237,9 +432,9 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
                              struct connectdata *conn,
                              int *ftpcode) /* return the ftp-code */
 {
-  /* Brand new implementation.
-   * We cannot read just one byte per read() and then go back to select()
-   * as it seems that the OpenSSL read() stuff doesn't grok that properly.
+  /*
+   * We cannot read just one byte per read() and then go back to select() as
+   * the OpenSSL read() doesn't grok that properly.
    *
    * Alas, read as much as possible, split up into lines, use the ending
    * line in a response or continue reading.  */
@@ -250,32 +445,24 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
   ssize_t gotbytes;
   char *ptr;
   long timeout;              /* timeout in seconds */
-  struct timeval interval;
-  fd_set rkeepfd;
-  fd_set readfd;
+  int interval_ms;
   struct SessionHandle *data = conn->data;
   char *line_start;
   int code=0; /* default ftp "error code" to return */
   char *buf = data->state.buffer;
   CURLcode result = CURLE_OK;
-  struct FTP *ftp = conn->proto.ftp;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
   struct timeval now = Curl_tvnow();
 
   if (ftpcode)
     *ftpcode = 0; /* 0 for errors */
 
-  FD_ZERO (&readfd);            /* clear it */
-  FD_SET (sockfd, &readfd);     /* read socket */
-
-  /* get this in a backup variable to be able to restore it on each lap in the
-     select() loop */
-  rkeepfd = readfd;
-
   ptr=buf;
   line_start = buf;
 
   *nreadp=0;
   perline=0;
+  keepon=TRUE;
 
   while((*nreadp<BUFSIZE) && (keepon && !result)) {
     /* check and reset timeout value every lap */
@@ -294,7 +481,7 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
     else
       /* Even without a requested timeout, we only wait response_time
          seconds for the full response to arrive before we bail out */
-      timeout = ftp->response_time -
+      timeout = ftpc->response_time -
         Curl_tvdiff(Curl_tvnow(), now)/1000; /* spent time */
 
     if(timeout <=0 ) {
@@ -302,15 +489,14 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
       return CURLE_OPERATION_TIMEDOUT; /* already too little time */
     }
 
-    if(!ftp->cache) {
-      readfd = rkeepfd;            /* set every lap */
-      interval.tv_sec = 1; /* use 1 second timeout intervals */
-      interval.tv_usec = 0;
+    if(!ftpc->cache) {
+      interval_ms = 1 * 1000;  /* use 1 second timeout intervals */
 
-      switch (select (sockfd+1, &readfd, NULL, NULL, &interval)) {
+      switch (Curl_select(sockfd, CURL_SOCKET_BAD, interval_ms)) {
       case -1: /* select() error, stop reading */
         result = CURLE_RECV_ERROR;
-        failf(data, "FTP response aborted due to select() error: %d", errno);
+        failf(data, "FTP response aborted due to select() error: %d",
+              Curl_sockerrno());
         break;
       case 0: /* timeout */
         if(Curl_pgrsUpdate(conn))
@@ -327,7 +513,7 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
        * to read, but when we use Curl_read() it may do so. Do confirm
        * that this is still ok and then remove this comment!
        */
-      if(ftp->cache) {
+      if(ftpc->cache) {
         /* we had data in the "cache", copy that instead of doing an actual
          * read
          *
@@ -337,11 +523,11 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
          * int to begin with, even though its datatype may be larger
          * than an int.
          */
-        memcpy(ptr, ftp->cache, (int)ftp->cache_size);
-        gotbytes = (int)ftp->cache_size;
-        free(ftp->cache);    /* free the cache */
-        ftp->cache = NULL;   /* clear the pointer */
-        ftp->cache_size = 0; /* zero the size just in case */
+        memcpy(ptr, ftpc->cache, (int)ftpc->cache_size);
+        gotbytes = (int)ftpc->cache_size;
+        free(ftpc->cache);    /* free the cache */
+        ftpc->cache = NULL;   /* clear the pointer */
+        ftpc->cache_size = 0; /* zero the size just in case */
       }
       else {
         int res = Curl_read(conn, sockfd, ptr, BUFSIZE-*nreadp, &gotbytes);
@@ -349,6 +535,14 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
           /* EWOULDBLOCK */
           continue; /* go looping again */
 
+#ifdef CURL_DOES_CONVERSIONS
+        if((res == CURLE_OK) && (gotbytes > 0)) {
+          /* convert from the network encoding */
+          result = res = Curl_convert_from_network(data, ptr, gotbytes);
+          /* Curl_convert_from_network calls failf if unsuccessful */
+        }
+#endif /* CURL_DOES_CONVERSIONS */
+
         if(CURLE_OK != res)
           keepon = FALSE;
       }
@@ -377,21 +571,19 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
 
             /* output debug output if that is requested */
             if(data->set.verbose)
-              Curl_debug(data, CURLINFO_HEADER_IN, line_start, perline, conn->host.dispname);
+              Curl_debug(data, CURLINFO_HEADER_IN,
+                         line_start, (size_t)perline, conn);
 
             /*
              * We pass all response-lines to the callback function registered
              * for "headers". The response lines can be seen as a kind of
              * headers.
              */
-            result = Curl_client_write(data, CLIENTWRITE_HEADER,
+            result = Curl_client_write(conn, CLIENTWRITE_HEADER,
                                        line_start, perline);
             if(result)
               return result;
 
-#define lastline(line) (isdigit((int)line[0]) && isdigit((int)line[1]) && \
-                        isdigit((int)line[2]) && (' ' == line[3]))
-
             if(perline>3 && lastline(line_start)) {
               /* This is the end of the last line, copy the last
                * line to the start of the buffer and zero terminate,
@@ -417,10 +609,10 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
              invoke as it may actually contain another end of response
              already!  Cleverly figured out by Eric Lavigne in December
              2001. */
-          ftp->cache_size = gotbytes - i;
-          ftp->cache = (char *)malloc((int)ftp->cache_size);
-          if(ftp->cache)
-            memcpy(ftp->cache, line_start, (int)ftp->cache_size);
+          ftpc->cache_size = gotbytes - i;
+          ftpc->cache = (char *)malloc((int)ftpc->cache_size);
+          if(ftpc->cache)
+            memcpy(ftpc->cache, line_start, (int)ftpc->cache_size);
           else
             return CURLE_OUT_OF_MEMORY; /**BANG**/
         }
@@ -459,655 +651,224 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
   return result;
 }
 
-static const char *ftpauth[]= {
-  "SSL", "TLS", NULL
-};
-
-/*
- * Curl_ftp_connect() should do everything that is to be considered a part of
- * the connection phase.
- */
-CURLcode Curl_ftp_connect(struct connectdata *conn)
+/* This is the ONLY way to change FTP state! */
+static void state(struct connectdata *conn,
+                  ftpstate state)
 {
-  /* this is FTP and no proxy */
-  ssize_t nread;
-  struct SessionHandle *data=conn->data;
-  char *buf = data->state.buffer; /* this is our buffer */
-  struct FTP *ftp;
-  CURLcode result;
-  int ftpcode, try;
-
-  ftp = (struct FTP *)malloc(sizeof(struct FTP));
-  if(!ftp)
-    return CURLE_OUT_OF_MEMORY;
-
-  memset(ftp, 0, sizeof(struct FTP));
-  conn->proto.ftp = ftp;
-
-  /* We always support persistant connections on ftp */
-  conn->bits.close = FALSE;
-
-  /* get some initial data into the ftp struct */
-  ftp->bytecountp = &conn->bytecount;
-
-  /* no need to duplicate them, this connectdata struct won't change */
-  ftp->user = conn->user;
-  ftp->passwd = conn->passwd;
-  ftp->response_time = 3600; /* set default response time-out */
-
-#ifndef CURL_DISABLE_HTTP
-  if (conn->bits.tunnel_proxy) {
-    /* We want "seamless" FTP operations through HTTP proxy tunnel */
-    result = Curl_ConnectHTTPProxyTunnel(conn, FIRSTSOCKET,
-                                         conn->host.name, conn->remote_port);
-    if(CURLE_OK != result)
-      return result;
-  }
-#endif   /* CURL_DISABLE_HTTP */
-
-  if(conn->protocol & PROT_FTPS) {
-    /* FTPS is simply ftp with SSL for the control channel */
-    /* now, perform the SSL initialization for this socket */
-    result = Curl_SSLConnect(conn, FIRSTSOCKET);
-    if(result)
-      return result;
-  }
-
-  /* The first thing we do is wait for the "220*" line: */
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if(result)
-    return result;
-
-  if(ftpcode != 220) {
-    failf(data, "This doesn't seem like a nice ftp-server response");
-    return CURLE_FTP_WEIRD_SERVER_REPLY;
-  }
-
-#ifdef HAVE_KRB4
-  /* if not anonymous login, try a secure login */
-  if(data->set.krb4) {
-
-    /* request data protection level (default is 'clear') */
-    Curl_sec_request_prot(conn, "private");
-
-    /* We set private first as default, in case the line below fails to
-       set a valid level */
-    Curl_sec_request_prot(conn, data->set.krb4_level);
-
-    if(Curl_sec_login(conn) != 0)
-      infof(data, "Logging in with password in cleartext!\n");
-    else
-      infof(data, "Authentication successful\n");
-  }
-#endif
-
-  if(data->set.ftp_ssl && !conn->ssl[FIRSTSOCKET].use) {
-    /* we don't have a SSL/TLS connection, try a FTPS connection now */
-
-    for (try = 0; ftpauth[try]; try++) {
-
-      FTPSENDF(conn, "AUTH %s", ftpauth[try]);
-
-      result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-
-      if(result)
-        return result;
-
-      /* RFC2228 (page 5) says:
-       *
-       * If the server is willing to accept the named security mechanism, and
-       * does not require any security data, it must respond with reply code
-       * 234/334.
-       */
-
-      if((ftpcode == 234) || (ftpcode == 334)) {
-        result = Curl_SSLConnect(conn, FIRSTSOCKET);
-        if(result)
-          return result;
-        conn->protocol |= PROT_FTPS;
-        conn->ssl[SECONDARYSOCKET].use = FALSE; /* clear-text data */
-        break;
-      }
-    }
-  }
-
-  /* send USER */
-  FTPSENDF(conn, "USER %s", ftp->user?ftp->user:"");
-
-  /* wait for feedback */
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if(result)
-    return result;
-
-  if(ftpcode == 530) {
-    /* 530 User ... access denied
-       (the server denies to log the specified user) */
-    failf(data, "Access denied: %s", &buf[4]);
-    return CURLE_FTP_ACCESS_DENIED;
-  }
-  else if(ftpcode == 331) {
-    /* 331 Password required for ...
-       (the server requires to send the user's password too) */
-    FTPSENDF(conn, "PASS %s", ftp->passwd?ftp->passwd:"");
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-    if(result)
-      return result;
-
-    if(ftpcode == 530) {
-      /* 530 Login incorrect.
-         (the username and/or the password are incorrect) */
-      failf(data, "the username and/or the password are incorrect");
-      return CURLE_FTP_USER_PASSWORD_INCORRECT;
-    }
-    else if(ftpcode == 230) {
-      /* 230 User ... logged in.
-         (user successfully logged in) */
-
-      infof(data, "We have successfully logged in\n");
-    }
-    else {
-      failf(data, "Odd return code after PASS");
-      return CURLE_FTP_WEIRD_PASS_REPLY;
-    }
-  }
-  else if(buf[0] == '2') {
-    /* 230 User ... logged in.
-       (the user logged in without password) */
-    infof(data, "We have successfully logged in\n");
-    if (conn->ssl[FIRSTSOCKET].use) {
-#ifdef HAVE_KRB4
-      /* We are logged in with Kerberos, now set the requested protection
-       * level
-       */
-      if(conn->sec_complete)
-        Curl_sec_set_protection_level(conn);
-
-      /* We may need to issue a KAUTH here to have access to the files
-       * do it if user supplied a password
-       */
-      if(conn->passwd && *conn->passwd) {
-        result = Curl_krb_kauth(conn);
-        if(result)
-          return result;
-      }
+#ifdef CURLDEBUG
+  /* for debug purposes */
+  const char *names[]={
+    "STOP",
+    "WAIT220",
+    "AUTH",
+    "USER",
+    "PASS",
+    "ACCT",
+    "PBSZ",
+    "PROT",
+    "CCC",
+    "PWD",
+    "QUOTE",
+    "RETR_PREQUOTE",
+    "STOR_PREQUOTE",
+    "POSTQUOTE",
+    "CWD",
+    "MKD",
+    "MDTM",
+    "TYPE",
+    "LIST_TYPE",
+    "RETR_TYPE",
+    "STOR_TYPE",
+    "SIZE",
+    "RETR_SIZE",
+    "STOR_SIZE",
+    "REST",
+    "RETR_REST",
+    "PORT",
+    "PASV",
+    "LIST",
+    "RETR",
+    "STOR",
+    "QUIT"
+  };
 #endif
-    }
-  }
-  else {
-    failf(data, "Odd return code after USER");
-    return CURLE_FTP_WEIRD_USER_REPLY;
-  }
-
-  if(conn->ssl[FIRSTSOCKET].use) {
-    /* PBSZ = PROTECTION BUFFER SIZE.
-
-       The 'draft-murray-auth-ftp-ssl' (draft 12, page 7) says:
-
-       Specifically, the PROT command MUST be preceded by a PBSZ command
-       and a PBSZ command MUST be preceded by a successful security data
-       exchange (the TLS negotiation in this case)
-
-       ... (and on page 8):
-
-       Thus the PBSZ command must still be issued, but must have a parameter
-       of '0' to indicate that no buffering is taking place and the data
-       connection should not be encapsulated.
-    */
-    FTPSENDF(conn, "PBSZ %d", 0);
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-    if(result)
-      return result;
-
-    /* For TLS, the data connection can have one of two security levels.
-
-       1)Clear (requested by 'PROT C')
-
-       2)Private (requested by 'PROT P')
-    */
-    if(!conn->ssl[SECONDARYSOCKET].use) {
-      FTPSENDF(conn, "PROT %c", 'P');
-      result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-      if(result)
-        return result;
-
-      if(ftpcode == 200)
-        /* We have enabled SSL for the data connection! */
-        conn->ssl[SECONDARYSOCKET].use = TRUE;
-
-      /* FTP servers typically responds with 500 if they decide to reject
-         our 'P' request */
-    }
-  }
-
-  /* send PWD to discover our entry point */
-  FTPSENDF(conn, "PWD", NULL);
-
-  /* wait for feedback */
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if(result)
-    return result;
-
-  if(ftpcode == 257) {
-    char *dir = (char *)malloc(nread+1);
-    char *store=dir;
-    char *ptr=&buf[4]; /* start on the first letter */
-
-    if(!dir)
-      return CURLE_OUT_OF_MEMORY;
-
-    /* Reply format is like
-       257<space>"<directory-name>"<space><commentary> and the RFC959 says
-
-       The directory name can contain any character; embedded double-quotes
-       should be escaped by double-quotes (the "quote-doubling" convention).
-    */
-    if('\"' == *ptr) {
-      /* it started good */
-      ptr++;
-      while(ptr && *ptr) {
-        if('\"' == *ptr) {
-          if('\"' == ptr[1]) {
-            /* "quote-doubling" */
-            *store = ptr[1];
-            ptr++;
-          }
-          else {
-            /* end of path */
-            *store = '\0'; /* zero terminate */
-            break; /* get out of this loop */
-          }
-        }
-        else
-          *store = *ptr;
-        store++;
-        ptr++;
-      }
-      ftp->entrypath =dir; /* remember this */
-      infof(data, "Entry path is '%s'\n", ftp->entrypath);
-    }
-    else {
-      /* couldn't get the path */
-      free(dir);
-      infof(data, "Failed to figure out path\n");
-    }
-
-  }
-  else {
-    /* We couldn't read the PWD response! */
-  }
-
-  return CURLE_OK;
-}
-
-/***********************************************************************
- *
- * Curl_ftp_done()
- *
- * The DONE function. This does what needs to be done after a single DO has
- * performed.
- *
- * Input argument is already checked for validity.
- */
-CURLcode Curl_ftp_done(struct connectdata *conn, CURLcode status)
-{
-  struct SessionHandle *data = conn->data;
-  struct FTP *ftp = conn->proto.ftp;
-  ssize_t nread;
-  int ftpcode;
-  CURLcode result=CURLE_OK;
-
-  bool was_ctl_valid = ftp->ctl_valid;
-
-  /* free the dir tree and file parts */
-  freedirs(ftp);
-
-  ftp->ctl_valid = FALSE;
-
-  if(data->set.upload) {
-    if((-1 != data->set.infilesize) &&
-       (data->set.infilesize != *ftp->bytecountp) &&
-       !data->set.crlf) {
-      failf(data, "Uploaded unaligned file size (%" FORMAT_OFF_T
-            " out of %" FORMAT_OFF_T " bytes)",
-            *ftp->bytecountp, data->set.infilesize);
-      conn->bits.close = TRUE; /* close this connection since we don't
-                                  know what state this error leaves us in */
-      return CURLE_PARTIAL_FILE;
-    }
-  }
-  else {
-    if((-1 != conn->size) && (conn->size != *ftp->bytecountp) &&
-       (conn->maxdownload != *ftp->bytecountp)) {
-      failf(data, "Received only partial file: %" FORMAT_OFF_T " bytes",
-            *ftp->bytecountp);
-      conn->bits.close = TRUE; /* close this connection since we don't
-                                  know what state this error leaves us in */
-      return CURLE_PARTIAL_FILE;
-    }
-    else if(!ftp->dont_check &&
-            !*ftp->bytecountp &&
-            (conn->size>0)) {
-      /* We consider this an error, but there's no true FTP error received
-         why we need to continue to "read out" the server response too.
-         We don't want to leave a "waiting" server reply if we'll get told
-         to make a second request on this same connection! */
-      failf(data, "No data was received!");
-      result = CURLE_FTP_COULDNT_RETR_FILE;
-    }
-  }
-
-  switch(status) {
-  case CURLE_BAD_DOWNLOAD_RESUME:
-  case CURLE_FTP_WEIRD_PASV_REPLY:
-  case CURLE_FTP_PORT_FAILED:
-  case CURLE_FTP_COULDNT_SET_BINARY:
-  case CURLE_FTP_COULDNT_RETR_FILE:
-  case CURLE_FTP_ACCESS_DENIED:
-    /* the connection stays alive fine even though this happened */
-    /* fall-through */
-  case CURLE_OK: /* doesn't affect the control connection's status */
-    ftp->ctl_valid = was_ctl_valid;
-    break;
-  default:       /* by default, an error means the control connection is
-                    wedged and should not be used anymore */
-    ftp->ctl_valid = FALSE;
-    break;
-  }
-
-#ifdef HAVE_KRB4
-  Curl_sec_fflush_fd(conn, conn->sock[SECONDARYSOCKET]);
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+#ifdef CURLDEBUG
+  if(ftpc->state != state)
+    infof(conn->data, "FTP %p state change from %s to %s\n",
+          ftpc, names[ftpc->state], names[state]);
 #endif
-  /* shut down the socket to inform the server we're done */
-  sclose(conn->sock[SECONDARYSOCKET]);
-  conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
-
-  if(!ftp->no_transfer && !status) {
-    /* Let's see what the server says about the transfer we just performed,
-     * but lower the timeout as sometimes this connection has died while the
-     * data has been transfered. This happens when doing through NATs etc that
-     * abandon old silent connections.
-     */
-    ftp->response_time = 60; /* give it only a minute for now */
-
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-
-    ftp->response_time = 3600; /* set this back to one hour waits */
-
-    if(!nread && (CURLE_OPERATION_TIMEDOUT == result)) {
-      failf(data, "control connection looks dead");
-      return result;
-    }
-
-    if(result)
-      return result;
-
-    if(!ftp->dont_check) {
-      /* 226 Transfer complete, 250 Requested file action okay, completed. */
-      if((ftpcode != 226) && (ftpcode != 250)) {
-        failf(data, "server did not report OK, got %d", ftpcode);
-        return CURLE_FTP_WRITE_ERROR;
-      }
-    }
-  }
-
-  /* clear these for next connection */
-  ftp->no_transfer = FALSE;
-  ftp->dont_check = FALSE;
-
-  if (!result && conn->sec_conn) {   /* 3rd party transfer */
-    /* "done" with the secondary connection */
-    result = Curl_ftp_done(conn->sec_conn, status);
-  }
-
-  /* Send any post-transfer QUOTE strings? */
-  if(!status && !result && data->set.postquote)
-    result = ftp_sendquote(conn, data->set.postquote);
-
-  return result;
+  ftpc->state = state;
 }
 
-/***********************************************************************
- *
- * ftp_sendquote()
- *
- * Where a 'quote' means a list of custom commands to send to the server.
- * The quote list is passed as an argument.
- */
-
-static
-CURLcode ftp_sendquote(struct connectdata *conn, struct curl_slist *quote)
+static CURLcode ftp_state_user(struct connectdata *conn)
 {
-  struct curl_slist *item;
-  ssize_t nread;
-  int ftpcode;
   CURLcode result;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+  /* send USER */
+  NBFTPSENDF(conn, "USER %s", ftp->user?ftp->user:"");
 
-  item = quote;
-  while (item) {
-    if (item->data) {
-      FTPSENDF(conn, "%s", item->data);
-
-      result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-      if (result)
-        return result;
-
-      if (ftpcode >= 400) {
-        failf(conn->data, "QUOT string not accepted: %s", item->data);
-        return CURLE_FTP_QUOTE_ERROR;
-      }
-    }
-
-    item = item->next;
-  }
+  state(conn, FTP_USER);
+  conn->data->state.ftp_trying_alternative = FALSE;
 
   return CURLE_OK;
 }
 
-/***********************************************************************
- *
- * ftp_getfiletime()
- *
- * Get the timestamp of the given file.
- */
-static
-CURLcode ftp_getfiletime(struct connectdata *conn, char *file)
+static CURLcode ftp_state_pwd(struct connectdata *conn)
 {
   CURLcode result;
-  int ftpcode; /* for ftp status */
-  ssize_t nread;
-  char *buf = conn->data->state.buffer;
-
-  /* we have requested to get the modified-time of the file, this is yet
-     again a grey area as the MDTM is not kosher RFC959 */
-  FTPSENDF(conn, "MDTM %s", file);
 
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if(result)
-    return result;
+  /* send PWD to discover our entry point */
+  NBFTPSENDF(conn, "PWD", NULL);
+  state(conn, FTP_PWD);
 
-  switch(ftpcode) {
-  case 213:
-    {
-      /* we got a time. Format should be: "YYYYMMDDHHMMSS[.sss]" where the
-         last .sss part is optional and means fractions of a second */
-      int year, month, day, hour, minute, second;
-      if(6 == sscanf(buf+4, "%04d%02d%02d%02d%02d%02d",
-                     &year, &month, &day, &hour, &minute, &second)) {
-        /* we have a time, reformat it */
-        time_t secs=time(NULL);
-        snprintf(buf, sizeof(conn->data->state.buffer),
-                 "%04d%02d%02d %02d:%02d:%02d GMT",
-                 year, month, day, hour, minute, second);
-        /* now, convert this into a time() value: */
-        conn->data->info.filetime = curl_getdate(buf, &secs);
-      }
-    }
-    break;
-  default:
-    infof(conn->data, "unsupported MDTM reply format\n");
-    break;
-  case 550: /* "No such file or directory" */
-    failf(conn->data, "Given file does not exist");
-    result = CURLE_FTP_COULDNT_RETR_FILE;
-    break;
-  }
-  return  result;
+  return CURLE_OK;
 }
 
-/***********************************************************************
- *
- * ftp_transfertype()
- *
- * Set transfer type. We only deal with ASCII or BINARY so this function
- * sets one of them.
- */
-static CURLcode ftp_transfertype(struct connectdata *conn,
-                                  bool ascii)
+/* For the FTP "protocol connect" and "doing" phases only */
+int Curl_ftp_getsock(struct connectdata *conn,
+                     curl_socket_t *socks,
+                     int numsocks)
 {
-  struct SessionHandle *data = conn->data;
-  int ftpcode;
-  ssize_t nread;
-  CURLcode result;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
 
-  FTPSENDF(conn, "TYPE %s", ascii?"A":"I");
+  if(!numsocks)
+    return GETSOCK_BLANK;
 
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if(result)
-    return result;
+  socks[0] = conn->sock[FIRSTSOCKET];
 
-  if(ftpcode != 200) {
-    failf(data, "Couldn't set %s mode",
-          ascii?"ASCII":"binary");
-    return ascii? CURLE_FTP_COULDNT_SET_ASCII:CURLE_FTP_COULDNT_SET_BINARY;
+  if(ftpc->sendleft) {
+    /* write mode */
+    return GETSOCK_WRITESOCK(0);
   }
 
-  return CURLE_OK;
+  /* read mode */
+  return GETSOCK_READSOCK(0);
 }
 
-/***********************************************************************
- *
- * ftp_getsize()
- *
- * Returns the file size (in bytes) of the given remote file.
- */
+/* This is called after the FTP_QUOTE state is passed.
 
-static
-CURLcode ftp_getsize(struct connectdata *conn, char *file,
-                     curl_off_t *size)
+   ftp_state_cwd() sends the range of PWD commands to the server to change to
+   the correct directory. It may also need to send MKD commands to create
+   missing ones, if that option is enabled.
+*/
+static CURLcode ftp_state_cwd(struct connectdata *conn)
 {
-  struct SessionHandle *data = conn->data;
-  int ftpcode;
-  ssize_t nread;
-  char *buf=data->state.buffer;
-  CURLcode result;
-
-  FTPSENDF(conn, "SIZE %s", file);
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if(result)
-    return result;
+  CURLcode result = CURLE_OK;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
 
-  if(ftpcode == 213) {
-    /* get the size from the ascii string: */
-    *size = curlx_strtoofft(buf+4, NULL, 0);
+  if(ftpc->cwddone)
+    /* already done and fine */
+    result = ftp_state_post_cwd(conn);
+  else {
+    ftpc->count2 = 0;
+    if (conn->bits.reuse && ftpc->entrypath) {
+      /* This is a re-used connection. Since we change directory to where the
+         transfer is taking place, we must first get back to the original dir
+         where we ended up after login: */
+      ftpc->count1 = 0; /* we count this as the first path, then we add one
+                          for all upcoming ones in the ftp->dirs[] array */
+      NBFTPSENDF(conn, "CWD %s", ftpc->entrypath);
+      state(conn, FTP_CWD);
+    }
+    else {
+      if(ftpc->dirdepth) {
+        ftpc->count1 = 1;
+        /* issue the first CWD, the rest is sent when the CWD responses are
+           received... */
+        NBFTPSENDF(conn, "CWD %s", ftpc->dirs[ftpc->count1 -1]);
+        state(conn, FTP_CWD);
+      }
+      else {
+        /* No CWD necessary */
+        result = ftp_state_post_cwd(conn);
+      }
+    }
   }
-  else
-    return CURLE_FTP_COULDNT_GET_SIZE;
-
-  return CURLE_OK;
+  return result;
 }
 
-/***************************************************************************
- *
- * ftp_pasv_verbose()
- *
- * This function only outputs some informationals about this second connection
- * when we've issued a PASV command before and thus we have connected to a
- * possibly new IP address.
- *
- */
-static void
-ftp_pasv_verbose(struct connectdata *conn,
-                 Curl_addrinfo *ai,
-                 char *newhost, /* ascii version */
-                 int port)
-{
-  char buf[256];
-  Curl_printable_address(ai, buf, sizeof(buf));
-  infof(conn->data, "Connecting to %s (%s) port %d\n", newhost, buf, port);
-}
+typedef enum {
+  EPRT,
+  PORT,
+  DONE
+} ftpport;
 
-/***********************************************************************
- *
- * ftp_use_port()
- *
- * Send the proper PORT command. PORT is the ftp client's way of telling the
- * server that *WE* open a port that we listen on an awaits the server to
- * connect to. This is the opposite of PASV.
- */
+static CURLcode ftp_state_use_port(struct connectdata *conn,
+                                   ftpport fcmd) /* start with this */
 
-static
-CURLcode ftp_use_port(struct connectdata *conn)
 {
+  CURLcode result = CURLE_OK;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
   struct SessionHandle *data=conn->data;
-  curl_socket_t portsock;
-  ssize_t nread;
-  int ftpcode; /* receive FTP response codes in this */
-  CURLcode result;
+  curl_socket_t portsock= CURL_SOCKET_BAD;
+  char myhost[256] = "";
 
 #ifdef ENABLE_IPV6
   /******************************************************************
-   *
-   * Here's a piece of IPv6-specific code coming up
-   *
+   * IPv6-specific section
    */
-
-  struct addrinfo hints, *res, *ai;
-  struct sockaddr_storage ss;
+  struct Curl_sockaddr_storage ss;
+  struct addrinfo *res, *ai;
   socklen_t sslen;
   char hbuf[NI_MAXHOST];
-
   struct sockaddr *sa=(struct sockaddr *)&ss;
-  unsigned char *ap;
-  unsigned char *pp;
-  char portmsgbuf[1024], tmp[1024];
-
-  const char *mode[] = { "EPRT", "LPRT", "PORT", NULL };
-  char **modep;
+  char tmp[1024];
+  const char *mode[] = { "EPRT", "PORT", NULL };
   int rc;
   int error;
+  char *host=NULL;
+  struct Curl_dns_entry *h=NULL;
+  unsigned short port = 0;
 
-  /*
-   * we should use Curl_if2ip?  given pickiness of recent ftpd,
-   * I believe we should use the same address as the control connection.
-   */
-  sslen = sizeof(ss);
-  rc = getsockname(conn->sock[FIRSTSOCKET], (struct sockaddr *)&ss, &sslen);
-  if(rc < 0) {
-    failf(data, "getsockname() returned %d\n", rc);
-    return CURLE_FTP_PORT_FAILED;
-  }
+  /* Step 1, figure out what address that is requested */
 
-  rc = getnameinfo((struct sockaddr *)&ss, sslen, hbuf, sizeof(hbuf), NULL, 0,
-                   NIFLAGS);
-  if(rc) {
-    failf(data, "getnameinfo() returned %d\n", rc);
-    return CURLE_FTP_PORT_FAILED;
-  }
+  if(data->set.ftpport && (strlen(data->set.ftpport) > 1)) {
+    /* attempt to get the address of the given interface name */
+    if(!Curl_if2ip(data->set.ftpport, hbuf, sizeof(hbuf)))
+      /* not an interface, use the given string as host name instead */
+      host = data->set.ftpport;
+    else
+      host = hbuf; /* use the hbuf for host name */
+  } /* data->set.ftpport */
 
-  memset(&hints, 0, sizeof(hints));
-  hints.ai_family = sa->sa_family;
-  /*hints.ai_family = ss.ss_family;
-    this way can be used if sockaddr_storage is properly defined, as glibc
-    2.1.X doesn't do*/
-  hints.ai_socktype = SOCK_STREAM;
-  hints.ai_flags = AI_PASSIVE;
+  if(!host) {
+    /* not an interface and not a host name, get default by extracting
+       the IP from the control connection */
 
-  rc = getaddrinfo(hbuf, NULL, &hints, &res);
-  if(rc) {
-    failf(data, "getaddrinfo() returned %d\n", rc);
-    return CURLE_FTP_PORT_FAILED;
+    sslen = sizeof(ss);
+    if (getsockname(conn->sock[FIRSTSOCKET], (struct sockaddr *)&ss, &sslen)) {
+      failf(data, "getsockname() failed: %s",
+          Curl_strerror(conn, Curl_sockerrno()) );
+      return CURLE_FTP_PORT_FAILED;
+    }
+
+    if (sslen > (socklen_t)sizeof(ss))
+      sslen = sizeof(ss);
+    rc = getnameinfo((struct sockaddr *)&ss, sslen, hbuf, sizeof(hbuf), NULL,
+                     0, NIFLAGS);
+    if(rc) {
+      failf(data, "getnameinfo() returned %d \n", rc);
+      return CURLE_FTP_PORT_FAILED;
+    }
+    host = hbuf; /* use this host name */
   }
 
+  rc = Curl_resolv(conn, host, 0, &h);
+  if(rc == CURLRESOLV_PENDING)
+    rc = Curl_wait_for_resolv(conn, &h);
+  if(h) {
+    res = h->addr;
+    /* when we return from this function, we can forget about this entry
+       to we can unlock it now already */
+    Curl_resolv_unlock(data, h);
+  } /* (h) */
+  else
+    res = NULL; /* failure! */
+
+
+  /* step 2, create a socket for the requested address */
+
   portsock = CURL_SOCKET_BAD;
   error = 0;
   for (ai = res; ai; ai = ai->ai_next) {
@@ -1115,175 +876,164 @@ CURLcode ftp_use_port(struct connectdata *conn)
      * Workaround for AIX5 getaddrinfo() problem (it doesn't set ai_socktype):
      */
     if (ai->ai_socktype == 0)
-      ai->ai_socktype = hints.ai_socktype;
+      ai->ai_socktype = conn->socktype;
 
     portsock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
     if (portsock == CURL_SOCKET_BAD) {
-      error = Curl_ourerrno();
+      error = Curl_sockerrno();
       continue;
     }
+    break;
+  }
+  if(!ai) {
+    failf(data, "socket failure: %s", Curl_strerror(conn, error));
+    return CURLE_FTP_PORT_FAILED;
+  }
 
-    if (bind(portsock, ai->ai_addr, ai->ai_addrlen) < 0) {
-      error = Curl_ourerrno();
+  /* step 3, bind to a suitable local address */
+
+  /* Try binding the given address. */
+  if (bind(portsock, ai->ai_addr, ai->ai_addrlen)) {
+
+    /* It failed. Bind the address used for the control connection instead */
+    sslen = sizeof(ss);
+    if (getsockname(conn->sock[FIRSTSOCKET],
+                    (struct sockaddr *)sa, &sslen)) {
+      failf(data, "getsockname() failed: %s",
+          Curl_strerror(conn, Curl_sockerrno()) );
       sclose(portsock);
-      portsock = CURL_SOCKET_BAD;
-      continue;
+      return CURLE_FTP_PORT_FAILED;
     }
 
-    if (listen(portsock, 1) < 0) {
-      error = Curl_ourerrno();
+    /* set port number to zero to make bind() pick "any" */
+    if(((struct sockaddr *)sa)->sa_family == AF_INET)
+      ((struct sockaddr_in *)sa)->sin_port=0;
+    else
+      ((struct sockaddr_in6 *)sa)->sin6_port =0;
+
+    if (sslen > (socklen_t)sizeof(ss))
+      sslen = sizeof(ss);
+
+    if(bind(portsock, (struct sockaddr *)sa, sslen)) {
+      failf(data, "bind failed: %s", Curl_strerror(conn, Curl_sockerrno()));
       sclose(portsock);
-      portsock = CURL_SOCKET_BAD;
-      continue;
+      return CURLE_FTP_PORT_FAILED;
     }
-
-    break;
   }
-  freeaddrinfo(res);
-  if (portsock == CURL_SOCKET_BAD) {
-    failf(data, "%s", Curl_strerror(conn,error));
+
+  /* get the name again after the bind() so that we can extract the
+     port number it uses now */
+  sslen = sizeof(ss);
+  if(getsockname(portsock, (struct sockaddr *)sa, &sslen)) {
+    failf(data, "getsockname() failed: %s",
+          Curl_strerror(conn, Curl_sockerrno()) );
+    sclose(portsock);
     return CURLE_FTP_PORT_FAILED;
   }
 
-  sslen = sizeof(ss);
-  if (getsockname(portsock, sa, &sslen) < 0) {
-    failf(data, "%s", Curl_strerror(conn,Curl_ourerrno()));
+  /* step 4, listen on the socket */
+
+  if (listen(portsock, 1)) {
+    failf(data, "socket failure: %s", Curl_strerror(conn, Curl_sockerrno()));
+    sclose(portsock);
     return CURLE_FTP_PORT_FAILED;
   }
 
-  for (modep = (char **)(data->set.ftp_use_eprt?&mode[0]:&mode[2]);
-       modep && *modep; modep++) {
-    int lprtaf, eprtaf;
-    int alen=0, plen=0;
+  /* step 5, send the proper FTP command */
+
+  /* get a plain printable version of the numerical address to work with
+     below */
+  Curl_printable_address(ai, myhost, sizeof(myhost));
+
+#ifdef PF_INET6
+  if(!conn->bits.ftp_use_eprt && conn->bits.ipv6)
+    /* EPRT is disabled but we are connected to a IPv6 host, so we ignore the
+       request and enable EPRT again! */
+    conn->bits.ftp_use_eprt = TRUE;
+#endif
+
+  for (; fcmd != DONE; fcmd++) {
+
+    if(!conn->bits.ftp_use_eprt && (EPRT == fcmd))
+      /* if disabled, goto next */
+      continue;
 
     switch (sa->sa_family) {
     case AF_INET:
-      ap = (unsigned char *)&((struct sockaddr_in *)&ss)->sin_addr;
-      alen = sizeof(((struct sockaddr_in *)&ss)->sin_addr);
-      pp = (unsigned char *)&((struct sockaddr_in *)&ss)->sin_port;
-      plen = sizeof(((struct sockaddr_in *)&ss)->sin_port);
-      lprtaf = 4;
-      eprtaf = 1;
+      port = ntohs(((struct sockaddr_in *)sa)->sin_port);
       break;
     case AF_INET6:
-      ap = (unsigned char *)&((struct sockaddr_in6 *)&ss)->sin6_addr;
-      alen = sizeof(((struct sockaddr_in6 *)&ss)->sin6_addr);
-      pp = (unsigned char *)&((struct sockaddr_in6 *)&ss)->sin6_port;
-      plen = sizeof(((struct sockaddr_in6 *)&ss)->sin6_port);
-      lprtaf = 6;
-      eprtaf = 2;
+      port = ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
       break;
     default:
-      ap = pp = NULL;
-      lprtaf = eprtaf = -1;
       break;
     }
 
-    if (strcmp(*modep, "EPRT") == 0) {
-      if (eprtaf < 0)
-        continue;
-      if (getnameinfo((struct sockaddr *)&ss, sslen,
-                      portmsgbuf, sizeof(portmsgbuf), tmp, sizeof(tmp),
-                      NIFLAGS))
-        continue;
-
-      /* do not transmit IPv6 scope identifier to the wire */
-      if (sa->sa_family == AF_INET6) {
-        char *q = strchr(portmsgbuf, '%');
-        if (q)
-          *q = '\0';
-      }
+    if (EPRT == fcmd) {
+      /*
+       * Two fine examples from RFC2428;
+       *
+       * EPRT |1|132.235.1.2|6275|
+       *
+       * EPRT |2|1080::8:800:200C:417A|5282|
+       */
 
-      result = Curl_ftpsendf(conn, "%s |%d|%s|%s|", *modep, eprtaf,
-                             portmsgbuf, tmp);
+      result = Curl_nbftpsendf(conn, "%s |%d|%s|%d|", mode[fcmd],
+                               ai->ai_family == AF_INET?1:2,
+                               myhost, port);
       if(result)
         return result;
+      break;
     }
-    else if (strcmp(*modep, "LPRT") == 0 ||
-             strcmp(*modep, "PORT") == 0) {
-      int i;
+    else if (PORT == fcmd) {
+      char *source = myhost;
+      char *dest = tmp;
 
-      if (strcmp(*modep, "LPRT") == 0 && lprtaf < 0)
-        continue;
-      if (strcmp(*modep, "PORT") == 0 && sa->sa_family != AF_INET)
+      if ((PORT == fcmd) && ai->ai_family != AF_INET)
         continue;
 
-      portmsgbuf[0] = '\0';
-      if (strcmp(*modep, "LPRT") == 0) {
-        snprintf(tmp, sizeof(tmp), "%d,%d", lprtaf, alen);
-        if (strlcat(portmsgbuf, tmp, sizeof(portmsgbuf)) >=
-            sizeof(portmsgbuf)) {
-          continue;
-        }
-      }
-
-      for (i = 0; i < alen; i++) {
-        if (portmsgbuf[0])
-          snprintf(tmp, sizeof(tmp), ",%u", ap[i]);
+      /* translate x.x.x.x to x,x,x,x */
+      while(source && *source) {
+        if(*source == '.')
+          *dest=',';
         else
-          snprintf(tmp, sizeof(tmp), "%u", ap[i]);
-
-        if (strlcat(portmsgbuf, tmp, sizeof(portmsgbuf)) >=
-            sizeof(portmsgbuf)) {
-          continue;
-        }
-      }
-
-      if (strcmp(*modep, "LPRT") == 0) {
-        snprintf(tmp, sizeof(tmp), ",%d", plen);
-
-        if (strlcat(portmsgbuf, tmp, sizeof(portmsgbuf)) >= sizeof(portmsgbuf))
-          continue;
+          *dest = *source;
+        dest++;
+        source++;
       }
+      *dest = 0;
+      snprintf(dest, 20, ",%d,%d", port>>8, port&0xff);
 
-      for (i = 0; i < plen; i++) {
-        snprintf(tmp, sizeof(tmp), ",%u", pp[i]);
-
-        if (strlcat(portmsgbuf, tmp, sizeof(portmsgbuf)) >=
-            sizeof(portmsgbuf)) {
-          continue;
-        }
-      }
-
-      result = Curl_ftpsendf(conn, "%s %s", *modep, portmsgbuf);
+      result = Curl_nbftpsendf(conn, "%s %s", mode[fcmd], tmp);
       if(result)
         return result;
-    }
-
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-    if(result)
-      return result;
-
-    if (ftpcode != 200) {
-      continue;
-    }
-    else
       break;
+    }
   }
 
-  if (!*modep) {
-    sclose(portsock);
-    failf(data, "PORT command attempts failed");
-    return CURLE_FTP_PORT_FAILED;
-  }
-  /* we set the secondary socket variable to this for now, it
-     is only so that the cleanup function will close it in case
-     we fail before the true secondary stuff is made */
+  /* store which command was sent */
+  ftpc->count1 = fcmd;
+
+  /* we set the secondary socket variable to this for now, it is only so that
+     the cleanup function will close it in case we fail before the true
+     secondary stuff is made */
+  if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
+    sclose(conn->sock[SECONDARYSOCKET]);
   conn->sock[SECONDARYSOCKET] = portsock;
 
 #else
   /******************************************************************
-   *
-   * Here's a piece of IPv4-specific code coming up
-   *
+   * IPv4-specific section
    */
   struct sockaddr_in sa;
   unsigned short porttouse;
-  char myhost[256] = "";
   bool sa_filled_in = FALSE;
   Curl_addrinfo *addr = NULL;
   unsigned short ip[4];
+  bool freeaddr = TRUE;
+  socklen_t sslen = sizeof(sa);
 
+  (void)fcmd; /* not used in the IPv4 code */
   if(data->set.ftpport) {
     in_addr_t in;
 
@@ -1302,16 +1052,22 @@ CURLcode ftp_use_port(struct connectdata *conn)
       else if(strlen(data->set.ftpport)> 1) {
         /* might be a host name! */
         struct Curl_dns_entry *h=NULL;
-        int rc = Curl_resolv(conn, myhost, 0, &h);
+        int rc = Curl_resolv(conn, data->set.ftpport, 0, &h);
         if(rc == CURLRESOLV_PENDING)
+          /* BLOCKING */
           rc = Curl_wait_for_resolv(conn, &h);
-        (void)rc;
         if(h) {
           addr = h->addr;
           /* when we return from this function, we can forget about this entry
-             to we can unlock it now already */
+             so we can unlock it now already */
           Curl_resolv_unlock(data, h);
+
+          freeaddr = FALSE; /* make sure we don't free 'addr' in this function
+                               since it points to a DNS cache entry! */
         } /* (h) */
+        else {
+          infof(data, "Failed to resolve host name %s\n", data->set.ftpport);
+        }
       } /* strlen */
     } /* CURL_INADDR_NONE */
   } /* data->set.ftpport */
@@ -1319,18 +1075,14 @@ CURLcode ftp_use_port(struct connectdata *conn)
   if(!addr) {
     /* pick a suitable default here */
 
-#ifdef __hpux
-    int sslen;
-#else
-    socklen_t sslen;
-#endif
-
-    sslen = sizeof(sa);
     if (getsockname(conn->sock[FIRSTSOCKET],
-                    (struct sockaddr *)&sa, &sslen) < 0) {
-      failf(data, "getsockname() failed");
+                    (struct sockaddr *)&sa, &sslen)) {
+      failf(data, "getsockname() failed: %s",
+          Curl_strerror(conn, Curl_sockerrno()) );
       return CURLE_FTP_PORT_FAILED;
     }
+    if (sslen > (socklen_t)sizeof(sa))
+      sslen = sizeof(sa);
 
     sa_filled_in = TRUE; /* the sa struct is filled in */
   }
@@ -1338,33 +1090,31 @@ CURLcode ftp_use_port(struct connectdata *conn)
   if (addr || sa_filled_in) {
     portsock = socket(AF_INET, SOCK_STREAM, 0);
     if(CURL_SOCKET_BAD != portsock) {
-      socklen_t size;
 
       /* we set the secondary socket variable to this for now, it
          is only so that the cleanup function will close it in case
          we fail before the true secondary stuff is made */
+      if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
+        sclose(conn->sock[SECONDARYSOCKET]);
       conn->sock[SECONDARYSOCKET] = portsock;
 
       if(!sa_filled_in) {
-        memcpy(&sa, addr->ai_addr, sizeof(sa));
+        memcpy(&sa, addr->ai_addr, sslen);
         sa.sin_addr.s_addr = INADDR_ANY;
       }
 
       sa.sin_port = 0;
-      size = sizeof(sa);
+      sslen = sizeof(sa);
 
-      if(bind(portsock, (struct sockaddr *)&sa, size) >= 0) {
+      if(bind(portsock, (struct sockaddr *)&sa, sslen) == 0) {
         /* we succeeded to bind */
         struct sockaddr_in add;
-#ifdef __hpux
-        int socksize = sizeof(add);
-#else
         socklen_t socksize = sizeof(add);
-#endif
 
         if(getsockname(portsock, (struct sockaddr *) &add,
-                       &socksize)<0) {
-          failf(data, "getsockname() failed");
+                       &socksize)) {
+          failf(data, "getsockname() failed: %s",
+            Curl_strerror(conn, Curl_sockerrno()) );
           return CURLE_FTP_PORT_FAILED;
         }
         porttouse = ntohs(add.sin_port);
@@ -1385,7 +1135,7 @@ CURLcode ftp_use_port(struct connectdata *conn)
     }
   }
   else {
-    failf(data, "could't find IP address to use");
+    failf(data, "couldn't find IP address to use");
     return CURLE_FTP_PORT_FAILED;
   }
 
@@ -1401,54 +1151,39 @@ CURLcode ftp_use_port(struct connectdata *conn)
     infof(data, "Telling server to connect to %d.%d.%d.%d:%d\n",
           ip[0], ip[1], ip[2], ip[3], porttouse);
 
-    result=Curl_ftpsendf(conn, "PORT %d,%d,%d,%d,%d,%d",
-                         ip[0], ip[1], ip[2], ip[3],
-                         porttouse >> 8,
-                         porttouse & 255);
+    result=Curl_nbftpsendf(conn, "PORT %d,%d,%d,%d,%d,%d",
+                           ip[0], ip[1], ip[2], ip[3],
+                           porttouse >> 8, porttouse & 255);
     if(result)
       return result;
-
   }
   else
     return CURLE_FTP_PORT_FAILED;
 
-  Curl_freeaddrinfo(addr);
+  if(freeaddr)
+    Curl_freeaddrinfo(addr);
 
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if(result)
-    return result;
+  ftpc->count1 = PORT;
 
-  if(ftpcode != 200) {
-    failf(data, "Server does not grok PORT, try without it!");
-    return CURLE_FTP_PORT_FAILED;
-  }
 #endif /* end of ipv4-specific code */
 
-  return CURLE_OK;
-}
+  /* this tcpconnect assignment below is a hackish work-around to make the
+     multi interface with active FTP work - as it will not wait for a
+     (passive) connect in Curl_is_connected().
 
-/***********************************************************************
- *
- * ftp_use_pasv()
- *
- * Send the PASV command. PASV is the ftp client's way of asking the server to
- * open a second port that we can connect to (for the data transfer). This is
- * the opposite of PORT.
- */
+     The *proper* fix is to make sure that the active connection from the
+     server is done in a non-blocking way. Currently, it is still BLOCKING.
+  */
+  conn->bits.tcpconnect = TRUE;
 
-static
-CURLcode ftp_use_pasv(struct connectdata *conn,
-                      bool *connected)
-{
-  struct SessionHandle *data = conn->data;
-  ssize_t nread;
-  char *buf = data->state.buffer; /* this is our buffer */
-  int ftpcode; /* receive FTP response codes in this */
-  CURLcode result;
-  struct Curl_dns_entry *addr=NULL;
-  Curl_addrinfo *conninfo;
-  int rc;
+  state(conn, FTP_PORT);
+  return result;
+}
 
+static CURLcode ftp_state_use_pasv(struct connectdata *conn)
+{
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  CURLcode result = CURLE_OK;
   /*
     Here's the excecutive summary on what to do:
 
@@ -1464,68 +1199,371 @@ CURLcode ftp_use_pasv(struct connectdata *conn,
   */
 
   const char *mode[] = { "EPSV", "PASV", NULL };
-  int results[] = { 229, 227, 0 };
   int modeoff;
-  unsigned short connectport; /* the local port connect() should use! */
-  unsigned short newport=0; /* remote port, not necessary the local one */
 
-  /* newhost must be able to hold a full IP-style address in ASCII, which
-     in the IPv6 case means 5*8-1 = 39 letters */
-  char newhost[48];
-  char *newhostp=NULL;
+#ifdef PF_INET6
+  if(!conn->bits.ftp_use_epsv && conn->bits.ipv6)
+    /* EPSV is disabled but we are connected to a IPv6 host, so we ignore the
+       request and enable EPSV again! */
+    conn->bits.ftp_use_epsv = TRUE;
+#endif
 
-  for (modeoff = (data->set.ftp_use_epsv?0:1);
-       mode[modeoff]; modeoff++) {
-    result = Curl_ftpsendf(conn, "%s", mode[modeoff]);
-    if(result)
-      return result;
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-    if(result)
+  modeoff = conn->bits.ftp_use_epsv?0:1;
+
+  result = Curl_nbftpsendf(conn, "%s", mode[modeoff]);
+  if(result)
+    return result;
+
+  ftpc->count1 = modeoff;
+  state(conn, FTP_PASV);
+  infof(conn->data, "Connect data stream passively\n");
+
+  return result;
+}
+
+/* REST is the last command in the chain of commands when a "head"-like
+   request is made. Thus, if an actual transfer is to be made this is where
+   we take off for real. */
+static CURLcode ftp_state_post_rest(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+  struct SessionHandle *data = conn->data;
+
+  if(ftp->no_transfer || conn->bits.no_body) {
+    /* doesn't transfer any data */
+    ftp->no_transfer = TRUE;
+
+    /* still possibly do PRE QUOTE jobs */
+    state(conn, FTP_RETR_PREQUOTE);
+    result = ftp_state_quote(conn, TRUE, FTP_RETR_PREQUOTE);
+  }
+  else if(data->set.ftp_use_port) {
+    /* We have chosen to use the PORT (or similar) command */
+    result = ftp_state_use_port(conn, EPRT);
+  }
+  else {
+    /* We have chosen (this is default) to use the PASV (or similar) command */
+    result = ftp_state_use_pasv(conn);
+  }
+  return result;
+}
+
+static CURLcode ftp_state_post_size(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+
+  if(ftp->no_transfer) {
+    /* if a "head"-like request is being made */
+
+    /* Determine if server can respond to REST command and therefore
+       whether it supports range */
+    NBFTPSENDF(conn, "REST %d", 0);
+
+    state(conn, FTP_REST);
+  }
+  else
+    result = ftp_state_post_rest(conn);
+
+  return result;
+}
+
+static CURLcode ftp_state_post_type(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+
+  if(ftp->no_transfer) {
+    /* if a "head"-like request is being made */
+
+    /* we know ftp->file is a valid pointer to a file name */
+    NBFTPSENDF(conn, "SIZE %s", ftp->file);
+
+    state(conn, FTP_SIZE);
+  }
+  else
+    result = ftp_state_post_size(conn);
+
+  return result;
+}
+
+static CURLcode ftp_state_post_listtype(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data = conn->data;
+
+  /* If this output is to be machine-parsed, the NLST command might be better
+     to use, since the LIST command output is not specified or standard in any
+     way. It has turned out that the NLST list output is not the same on all
+     servers either... */
+
+  NBFTPSENDF(conn, "%s",
+             data->set.customrequest?data->set.customrequest:
+             (data->set.ftp_list_only?"NLST":"LIST"));
+
+  state(conn, FTP_LIST);
+
+  return result;
+}
+
+static CURLcode ftp_state_post_retrtype(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
+
+  /* We've sent the TYPE, now we must send the list of prequote strings */
+
+  result = ftp_state_quote(conn, TRUE, FTP_RETR_PREQUOTE);
+
+  return result;
+}
+
+static CURLcode ftp_state_post_stortype(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
+
+  /* We've sent the TYPE, now we must send the list of prequote strings */
+
+  result = ftp_state_quote(conn, TRUE, FTP_STOR_PREQUOTE);
+
+  return result;
+}
+
+static CURLcode ftp_state_post_mdtm(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+  struct SessionHandle *data = conn->data;
+
+  /* If we have selected NOBODY and HEADER, it means that we only want file
+     information. Which in FTP can't be much more than the file size and
+     date. */
+  if(conn->bits.no_body && data->set.include_header && ftp->file &&
+     ftp_need_type(conn, data->set.prefer_ascii)) {
+    /* The SIZE command is _not_ RFC 959 specified, and therefor many servers
+       may not support it! It is however the only way we have to get a file's
+       size! */
+
+    ftp->no_transfer = TRUE; /* this means no actual transfer will be made */
+
+    /* Some servers return different sizes for different modes, and thus we
+       must set the proper type before we check the size */
+    result = ftp_nb_type(conn, data->set.prefer_ascii, FTP_TYPE);
+    if (result)
       return result;
-    if (ftpcode == results[modeoff])
-      break;
   }
+  else
+    result = ftp_state_post_type(conn);
 
-  if (!mode[modeoff]) {
-    failf(data, "Odd return code after PASV");
-    return CURLE_FTP_WEIRD_PASV_REPLY;
+  return result;
+}
+
+/* This is called after the CWD commands have been done in the beginning of
+   the DO phase */
+static CURLcode ftp_state_post_cwd(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+  struct SessionHandle *data = conn->data;
+
+  /* Requested time of file or time-depended transfer? */
+  if((data->set.get_filetime || data->set.timecondition) && ftp->file) {
+
+    /* we have requested to get the modified-time of the file, this is a white
+       spot as the MDTM is not mentioned in RFC959 */
+    NBFTPSENDF(conn, "MDTM %s", ftp->file);
+
+    state(conn, FTP_MDTM);
   }
-  else if (227 == results[modeoff]) {
-    int ip[4];
-    int port[2];
-    char *str=buf;
+  else
+    result = ftp_state_post_mdtm(conn);
 
-    /*
-     * New 227-parser June 3rd 1999.
-     * It now scans for a sequence of six comma-separated numbers and
-     * will take them as IP+port indicators.
-     *
-     * Found reply-strings include:
-     * "227 Entering Passive Mode (127,0,0,1,4,51)"
-     * "227 Data transfer will passively listen to 127,0,0,1,4,51"
-     * "227 Entering passive mode. 127,0,0,1,4,51"
-     */
+  return result;
+}
 
-    while(*str) {
-      if (6 == sscanf(str, "%d,%d,%d,%d,%d,%d",
-                      &ip[0], &ip[1], &ip[2], &ip[3],
-                      &port[0], &port[1]))
-        break;
-      str++;
+
+/* This is called after the TYPE and possible quote commands have been sent */
+static CURLcode ftp_state_ul_setup(struct connectdata *conn,
+                                   bool sizechecked)
+{
+  CURLcode result = CURLE_OK;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+  struct SessionHandle *data = conn->data;
+  curl_off_t passed=0;
+
+  if((data->reqdata.resume_from && !sizechecked) ||
+     ((data->reqdata.resume_from > 0) && sizechecked)) {
+    /* we're about to continue the uploading of a file */
+    /* 1. get already existing file's size. We use the SIZE command for this
+       which may not exist in the server!  The SIZE command is not in
+       RFC959. */
+
+    /* 2. This used to set REST. But since we can do append, we
+       don't another ftp command. We just skip the source file
+       offset and then we APPEND the rest on the file instead */
+
+    /* 3. pass file-size number of bytes in the source file */
+    /* 4. lower the infilesize counter */
+    /* => transfer as usual */
+
+    if(data->reqdata.resume_from < 0 ) {
+      /* Got no given size to start from, figure it out */
+      NBFTPSENDF(conn, "SIZE %s", ftp->file);
+      state(conn, FTP_STOR_SIZE);
+      return result;
     }
 
-    if(!*str) {
-      failf(data, "Couldn't interpret this 227-reply: %s", buf);
-      return CURLE_FTP_WEIRD_227_FORMAT;
+    /* enable append */
+    data->set.ftp_append = TRUE;
+
+    /* Let's read off the proper amount of bytes from the input. If we knew it
+       was a proper file we could've just fseek()ed but we only have a stream
+       here */
+
+    /* TODO: allow the ioctlfunction to provide a fast forward function that
+       can be used here and use this method only as a fallback! */
+    do {
+      curl_off_t readthisamountnow = (data->reqdata.resume_from - passed);
+      curl_off_t actuallyread;
+
+      if(readthisamountnow > BUFSIZE)
+        readthisamountnow = BUFSIZE;
+
+      actuallyread = (curl_off_t)
+        conn->fread(data->state.buffer, 1, (size_t)readthisamountnow,
+                    conn->fread_in);
+
+      passed += actuallyread;
+      if(actuallyread != readthisamountnow) {
+        failf(data, "Could only read %" FORMAT_OFF_T
+              " bytes from the input", passed);
+        return CURLE_FTP_COULDNT_USE_REST;
+      }
+    } while(passed != data->reqdata.resume_from);
+
+    /* now, decrease the size of the read */
+    if(data->set.infilesize>0) {
+      data->set.infilesize -= data->reqdata.resume_from;
+
+      if(data->set.infilesize <= 0) {
+        infof(data, "File already completely uploaded\n");
+
+        /* no data to transfer */
+        result=Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
+
+        /* Set no_transfer so that we won't get any error in
+         * Curl_ftp_done() because we didn't transfer anything! */
+        ftp->no_transfer = TRUE;
+
+        state(conn, FTP_STOP);
+        return CURLE_OK;
+      }
     }
+    /* we've passed, proceed as normal */
+  } /* resume_from */
 
-    snprintf(newhost, sizeof(newhost),
-             "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
-    newhostp = newhost;
-    newport = (port[0]<<8) + port[1];
+  NBFTPSENDF(conn, data->set.ftp_append?"APPE %s":"STOR %s",
+             ftp->file);
+
+  state(conn, FTP_STOR);
+
+  return result;
+}
+
+static CURLcode ftp_state_quote(struct connectdata *conn,
+                                bool init,
+                                ftpstate instate)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data = conn->data;
+  struct FTP *ftp = data->reqdata.proto.ftp;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  bool quote=FALSE;
+  struct curl_slist *item;
+
+  switch(instate) {
+  case FTP_QUOTE:
+  default:
+    item = data->set.quote;
+    break;
+  case FTP_RETR_PREQUOTE:
+  case FTP_STOR_PREQUOTE:
+    item = data->set.prequote;
+    break;
+  case FTP_POSTQUOTE:
+    item = data->set.postquote;
+    break;
   }
-  else if (229 == results[modeoff]) {
-    char *ptr = strchr(buf, '(');
+
+  if(init)
+    ftpc->count1 = 0;
+  else
+    ftpc->count1++;
+
+  if(item) {
+    int i = 0;
+
+    /* Skip count1 items in the linked list */
+    while((i< ftpc->count1) && item) {
+      item = item->next;
+      i++;
+    }
+    if(item) {
+      NBFTPSENDF(conn, "%s", item->data);
+      state(conn, instate);
+      quote = TRUE;
+    }
+  }
+
+  if(!quote) {
+    /* No more quote to send, continue to ... */
+    switch(instate) {
+    case FTP_QUOTE:
+    default:
+      result = ftp_state_cwd(conn);
+      break;
+    case FTP_RETR_PREQUOTE:
+      if (ftp->no_transfer)
+        state(conn, FTP_STOP);
+      else {
+        NBFTPSENDF(conn, "SIZE %s", ftp->file);
+        state(conn, FTP_RETR_SIZE);
+      }
+      break;
+    case FTP_STOR_PREQUOTE:
+      result = ftp_state_ul_setup(conn, FALSE);
+      break;
+    case FTP_POSTQUOTE:
+      break;
+    }
+  }
+
+  return result;
+}
+
+static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
+                                    int ftpcode)
+{
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  CURLcode result;
+  struct SessionHandle *data=conn->data;
+  Curl_addrinfo *conninfo;
+  struct Curl_dns_entry *addr=NULL;
+  int rc;
+  unsigned short connectport; /* the local port connect() should use! */
+  unsigned short newport=0; /* remote port */
+  bool connected;
+
+  /* newhost must be able to hold a full IP-style address in ASCII, which
+     in the IPv6 case means 5*8-1 = 39 letters */
+#define NEWHOST_BUFSIZE 48
+  char newhost[NEWHOST_BUFSIZE];
+  char *str=&data->state.buffer[4];  /* start on the first letter */
+
+  if((ftpc->count1 == 0) &&
+     (ftpcode == 229)) {
+    /* positive EPSV response */
+    char *ptr = strchr(str, '(');
     if(ptr) {
       unsigned int num;
       char separator[4];
@@ -1536,7 +1574,7 @@ CURLcode ftp_use_pasv(struct connectdata *conn,
                       &separator[2],
                       &num,
                       &separator[3])) {
-        char sep1 = separator[0];
+        const char sep1 = separator[0];
         int i;
 
         /* The four separators should be identical, or else this is an oddly
@@ -1550,8 +1588,13 @@ CURLcode ftp_use_pasv(struct connectdata *conn,
         if(ptr) {
           newport = num;
 
-          /* we should use the same host we already are connected to */
-          newhostp = conn->host.name;
+          if (conn->bits.tunnel_proxy)
+            /* proxy tunnel -> use other host info because ip_addr_str is the
+               proxy address not the ftp host */
+            snprintf(newhost, sizeof(newhost), "%s", conn->host.name);
+          else
+            /* use the same IP we are already connected to */
+            snprintf(newhost, NEWHOST_BUFSIZE, "%s", conn->ip_addr_str);
         }
       }
       else
@@ -1562,10 +1605,71 @@ CURLcode ftp_use_pasv(struct connectdata *conn,
       return CURLE_FTP_WEIRD_PASV_REPLY;
     }
   }
-  else
-    return CURLE_FTP_CANT_RECONNECT;
+  else if((ftpc->count1 == 1) &&
+          (ftpcode == 227)) {
+    /* positive PASV response */
+    int ip[4];
+    int port[2];
 
-  if(data->change.proxy && *data->change.proxy) {
+    /*
+     * Scan for a sequence of six comma-separated numbers and use them as
+     * IP+port indicators.
+     *
+     * Found reply-strings include:
+     * "227 Entering Passive Mode (127,0,0,1,4,51)"
+     * "227 Data transfer will passively listen to 127,0,0,1,4,51"
+     * "227 Entering passive mode. 127,0,0,1,4,51"
+     */
+    while(*str) {
+      if (6 == sscanf(str, "%d,%d,%d,%d,%d,%d",
+                      &ip[0], &ip[1], &ip[2], &ip[3],
+                      &port[0], &port[1]))
+        break;
+      str++;
+    }
+
+    if(!*str) {
+      failf(data, "Couldn't interpret the 227-response");
+      return CURLE_FTP_WEIRD_227_FORMAT;
+    }
+
+    /* we got OK from server */
+    if(data->set.ftp_skip_ip) {
+      /* told to ignore the remotely given IP but instead use the one we used
+         for the control connection */
+      infof(data, "Skips %d.%d.%d.%d for data connection, uses %s instead\n",
+            ip[0], ip[1], ip[2], ip[3],
+            conn->ip_addr_str);
+      if (conn->bits.tunnel_proxy)
+        /* proxy tunnel -> use other host info because ip_addr_str is the
+           proxy address not the ftp host */
+        snprintf(newhost, sizeof(newhost), "%s", conn->host.name);
+      else
+        snprintf(newhost, sizeof(newhost), "%s", conn->ip_addr_str);
+    }
+    else
+      snprintf(newhost, sizeof(newhost),
+               "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
+    newport = (port[0]<<8) + port[1];
+  }
+  else if(ftpc->count1 == 0) {
+    /* EPSV failed, move on to PASV */
+
+    /* disable it for next transfer */
+    conn->bits.ftp_use_epsv = FALSE;
+    infof(data, "disabling EPSV usage\n");
+
+    NBFTPSENDF(conn, "PASV", NULL);
+    ftpc->count1++;
+    /* remain in the FTP_PASV state */
+    return result;
+  }
+  else {
+    failf(data, "Bad PASV/EPSV response: %03d", ftpcode);
+    return CURLE_FTP_WEIRD_PASV_REPLY;
+  }
+
+  if(data->set.proxy && *data->set.proxy) {
     /*
      * This is a tunnel through a http proxy and we need to connect to the
      * proxy again here.
@@ -1575,6 +1679,7 @@ CURLcode ftp_use_pasv(struct connectdata *conn,
      */
     rc = Curl_resolv(conn, conn->proxy.name, (int)conn->port, &addr);
     if(rc == CURLRESOLV_PENDING)
+      /* BLOCKING */
       rc = Curl_wait_for_resolv(conn, &addr);
 
     connectport =
@@ -1583,12 +1688,13 @@ CURLcode ftp_use_pasv(struct connectdata *conn,
   }
   else {
     /* normal, direct, ftp connection */
-    rc = Curl_resolv(conn, newhostp, newport, &addr);
+    rc = Curl_resolv(conn, newhost, newport, &addr);
     if(rc == CURLRESOLV_PENDING)
+      /* BLOCKING */
       rc = Curl_wait_for_resolv(conn, &addr);
 
     if(!addr) {
-      failf(data, "Can't resolve new host %s:%d", newhostp, newport);
+      failf(data, "Can't resolve new host %s:%d", newhost, newport);
       return CURLE_FTP_CANT_GET_HOST;
     }
     connectport = newport; /* we connect to the remote port */
@@ -1598,13 +1704,27 @@ CURLcode ftp_use_pasv(struct connectdata *conn,
                             addr,
                             &conn->sock[SECONDARYSOCKET],
                             &conninfo,
-                            connected);
+                            &connected);
 
   Curl_resolv_unlock(data, addr); /* we're done using this address */
 
+  if (result && ftpc->count1 == 0 && ftpcode == 229) {
+    infof(data, "got positive EPSV response, but can't connect. "
+          "Disabling EPSV\n");
+    /* disable it for next transfer */
+    conn->bits.ftp_use_epsv = FALSE;
+    data->state.errorbuf = FALSE; /* allow error message to get rewritten */
+    NBFTPSENDF(conn, "PASV", NULL);
+    ftpc->count1++;
+    /* remain in the FTP_PASV state */
+    return result;
+ }
+
   if(result)
     return result;
 
+  conn->bits.tcpconnect = connected; /* simply TRUE or FALSE */
+
   /*
    * When this is used from the multi interface, this might've returned with
    * the 'connected' set to FALSE and thus we are now awaiting a non-blocking
@@ -1613,152 +1733,477 @@ CURLcode ftp_use_pasv(struct connectdata *conn,
 
   if(data->set.verbose)
     /* this just dumps information about this second connection */
-    ftp_pasv_verbose(conn, conninfo, newhostp, connectport);
+    ftp_pasv_verbose(conn, conninfo, newhost, connectport);
 
 #ifndef CURL_DISABLE_HTTP
-  if(conn->bits.tunnel_proxy) {
+  if(conn->bits.tunnel_proxy && conn->bits.httpproxy) {
+    /* FIX: this MUST wait for a proper connect first if 'connected' is
+     * FALSE */
+
+    /* BLOCKING */
     /* We want "seamless" FTP operations through HTTP proxy tunnel */
-    result = Curl_ConnectHTTPProxyTunnel(conn, SECONDARYSOCKET,
-                                         newhostp, newport);
+
+    /* Curl_proxyCONNECT is based on a pointer to a struct HTTP at the member
+     * conn->proto.http; we want FTP through HTTP and we have to change the
+     * member temporarily for connecting to the HTTP proxy. After
+     * Curl_proxyCONNECT we have to set back the member to the original struct
+     * FTP pointer
+     */
+    struct HTTP http_proxy;
+    struct FTP *ftp_save = data->reqdata.proto.ftp;
+    memset(&http_proxy, 0, sizeof(http_proxy));
+    data->reqdata.proto.http = &http_proxy;
+
+    result = Curl_proxyCONNECT(conn, SECONDARYSOCKET, newhost, newport);
+
+    data->reqdata.proto.ftp = ftp_save;
+
     if(CURLE_OK != result)
       return result;
   }
 #endif   /* CURL_DISABLE_HTTP */
 
-  (void)rc;
-  return CURLE_OK;
+  state(conn, FTP_STOP); /* this phase is completed */
+
+  return result;
 }
 
-/*
- * Curl_ftp_nextconnect()
- *
- * This function shall be called when the second FTP connection has been
- * established and is confirmed connected.
- */
+static CURLcode ftp_state_port_resp(struct connectdata *conn,
+                                    int ftpcode)
+{
+  struct SessionHandle *data = conn->data;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  ftpport fcmd = (ftpport)ftpc->count1;
+  CURLcode result = CURLE_OK;
 
-CURLcode Curl_ftp_nextconnect(struct connectdata *conn)
+  if(ftpcode != 200) {
+    /* the command failed */
+
+    if (EPRT == fcmd) {
+      infof(data, "disabling EPRT usage\n");
+      conn->bits.ftp_use_eprt = FALSE;
+    }
+    fcmd++;
+
+    if(fcmd == DONE) {
+      failf(data, "Failed to do PORT");
+      result = CURLE_FTP_PORT_FAILED;
+    }
+    else
+      /* try next */
+      result = ftp_state_use_port(conn, fcmd);
+  }
+  else {
+    infof(data, "Connect data stream actively\n");
+    state(conn, FTP_STOP); /* end of DO phase */
+  }
+
+  return result;
+}
+
+static CURLcode ftp_state_mdtm_resp(struct connectdata *conn,
+                                    int ftpcode)
 {
+  CURLcode result = CURLE_OK;
   struct SessionHandle *data=conn->data;
-  char *buf = data->state.buffer; /* this is our buffer */
-  CURLcode result;
-  ssize_t nread;
-  int ftpcode; /* for ftp status */
+  struct FTP *ftp = data->reqdata.proto.ftp;
 
-  /* the ftp struct is already inited in Curl_ftp_connect() */
-  struct FTP *ftp = conn->proto.ftp;
-  curl_off_t *bytecountp = ftp->bytecountp;
+  switch(ftpcode) {
+  case 213:
+    {
+      /* we got a time. Format should be: "YYYYMMDDHHMMSS[.sss]" where the
+         last .sss part is optional and means fractions of a second */
+      int year, month, day, hour, minute, second;
+      char *buf = data->state.buffer;
+      if(6 == sscanf(buf+4, "%04d%02d%02d%02d%02d%02d",
+                     &year, &month, &day, &hour, &minute, &second)) {
+        /* we have a time, reformat it */
+        time_t secs=time(NULL);
+        /* using the good old yacc/bison yuck */
+        snprintf(buf, sizeof(conn->data->state.buffer),
+                 "%04d%02d%02d %02d:%02d:%02d GMT",
+                 year, month, day, hour, minute, second);
+        /* now, convert this into a time() value: */
+        data->info.filetime = (long)curl_getdate(buf, &secs);
+      }
 
-  if(data->set.upload) {
+      /* If we asked for a time of the file and we actually got one as well,
+         we "emulate" a HTTP-style header in our output. */
 
-    /* Set type to binary (unless specified ASCII) */
-    result = ftp_transfertype(conn, data->set.ftp_ascii);
-    if(result)
-      return result;
+      if(conn->bits.no_body &&
+         data->set.include_header &&
+         ftp->file &&
+         data->set.get_filetime &&
+         (data->info.filetime>=0) ) {
+        struct tm *tm;
+        time_t clock = (time_t)data->info.filetime;
+#ifdef HAVE_GMTIME_R
+        struct tm buffer;
+        tm = (struct tm *)gmtime_r(&clock, &buffer);
+#else
+        tm = gmtime(&clock);
+#endif
+        /* format: "Tue, 15 Nov 1994 12:45:26" */
+        snprintf(buf, BUFSIZE-1,
+                 "Last-Modified: %s, %02d %s %4d %02d:%02d:%02d GMT\r\n",
+                 Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
+                 tm->tm_mday,
+                 Curl_month[tm->tm_mon],
+                 tm->tm_year + 1900,
+                 tm->tm_hour,
+                 tm->tm_min,
+                 tm->tm_sec);
+        result = Curl_client_write(conn, CLIENTWRITE_BOTH, buf, 0);
+        if(result)
+          return result;
+      } /* end of a ridiculous amount of conditionals */
+    }
+    break;
+  default:
+    infof(data, "unsupported MDTM reply format\n");
+    break;
+  case 550: /* "No such file or directory" */
+    failf(data, "Given file does not exist");
+    result = CURLE_FTP_COULDNT_RETR_FILE;
+    break;
+  }
 
-    /* Send any PREQUOTE strings after transfer type is set? (Wesley Laxton)*/
-    if(data->set.prequote) {
-      if ((result = ftp_sendquote(conn, data->set.prequote)) != CURLE_OK)
-        return result;
+  if(data->set.timecondition) {
+    if((data->info.filetime > 0) && (data->set.timevalue > 0)) {
+      switch(data->set.timecondition) {
+      case CURL_TIMECOND_IFMODSINCE:
+      default:
+        if(data->info.filetime <= data->set.timevalue) {
+          infof(data, "The requested document is not new enough\n");
+          ftp->no_transfer = TRUE; /* mark this to not transfer data */
+          state(conn, FTP_STOP);
+          return CURLE_OK;
+        }
+        break;
+      case CURL_TIMECOND_IFUNMODSINCE:
+        if(data->info.filetime > data->set.timevalue) {
+          infof(data, "The requested document is not old enough\n");
+          ftp->no_transfer = TRUE; /* mark this to not transfer data */
+          state(conn, FTP_STOP);
+          return CURLE_OK;
+        }
+        break;
+      } /* switch */
     }
+    else {
+      infof(data, "Skipping time comparison\n");
+    }
+  }
+
+  if(!result)
+    result = ftp_state_post_mdtm(conn);
+
+  return result;
+}
+
+static CURLcode ftp_state_type_resp(struct connectdata *conn,
+                                    int ftpcode,
+                                    ftpstate instate)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data=conn->data;
 
-    if(conn->resume_from) {
-      /* we're about to continue the uploading of a file */
-      /* 1. get already existing file's size. We use the SIZE
-         command for this which may not exist in the server!
-         The SIZE command is not in RFC959. */
+  if(ftpcode/100 != 2) {
+    /* "sasserftpd" and "(u)r(x)bot ftpd" both responds with 226 after a
+       successful 'TYPE I'. While that is not as RFC959 says, it is still a
+       positive response code and we allow that. */
+    failf(data, "Couldn't set desired mode");
+    return CURLE_FTP_COULDNT_SET_BINARY; /* FIX */
+  }
+  if(ftpcode != 200)
+    infof(data, "Got a %03d response code instead of the assumed 200\n",
+          ftpcode);
+
+  if(instate == FTP_TYPE)
+    result = ftp_state_post_type(conn);
+  else if(instate == FTP_LIST_TYPE)
+    result = ftp_state_post_listtype(conn);
+  else if(instate == FTP_RETR_TYPE)
+    result = ftp_state_post_retrtype(conn);
+  else if(instate == FTP_STOR_TYPE)
+    result = ftp_state_post_stortype(conn);
 
-      /* 2. This used to set REST. But since we can do append, we
-         don't another ftp command. We just skip the source file
-         offset and then we APPEND the rest on the file instead */
+  return result;
+}
 
-      /* 3. pass file-size number of bytes in the source file */
-      /* 4. lower the infilesize counter */
-      /* => transfer as usual */
+static CURLcode ftp_state_post_retr_size(struct connectdata *conn,
+                                         curl_off_t filesize)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data=conn->data;
+  struct FTP *ftp = data->reqdata.proto.ftp;
 
-      if(conn->resume_from < 0 ) {
-        /* we could've got a specified offset from the command line,
-           but now we know we didn't */
-        curl_off_t gottensize;
+  if (data->set.max_filesize && (filesize > data->set.max_filesize)) {
+    failf(data, "Maximum file size exceeded");
+    return CURLE_FILESIZE_EXCEEDED;
+  }
+  ftp->downloadsize = filesize;
 
-        if(CURLE_OK != ftp_getsize(conn, ftp->file, &gottensize)) {
-          failf(data, "Couldn't get remote file size");
-          return CURLE_FTP_COULDNT_GET_SIZE;
+  if(data->reqdata.resume_from) {
+    /* We always (attempt to) get the size of downloads, so it is done before
+       this even when not doing resumes. */
+    if(filesize == -1) {
+      infof(data, "ftp server doesn't support SIZE\n");
+      /* We couldn't get the size and therefore we can't know if there really
+         is a part of the file left to get, although the server will just
+         close the connection when we start the connection so it won't cause
+         us any harm, just not make us exit as nicely. */
+    }
+    else {
+      /* We got a file size report, so we check that there actually is a
+         part of the file left to get, or else we go home.  */
+      if(data->reqdata.resume_from< 0) {
+        /* We're supposed to download the last abs(from) bytes */
+        if(filesize < -data->reqdata.resume_from) {
+          failf(data, "Offset (%" FORMAT_OFF_T
+                ") was beyond file size (%" FORMAT_OFF_T ")",
+                data->reqdata.resume_from, filesize);
+          return CURLE_BAD_DOWNLOAD_RESUME;
         }
-        conn->resume_from = gottensize;
+        /* convert to size to download */
+        ftp->downloadsize = -data->reqdata.resume_from;
+        /* download from where? */
+        data->reqdata.resume_from = filesize - ftp->downloadsize;
       }
-
-      if(conn->resume_from) {
-        /* do we still game? */
-        curl_off_t passed=0;
-        /* enable append instead */
-        data->set.ftp_append = 1;
-
-        /* Now, let's read off the proper amount of bytes from the
-           input. If we knew it was a proper file we could've just
-           fseek()ed but we only have a stream here */
-        do {
-          curl_off_t readthisamountnow = (conn->resume_from - passed);
-          curl_off_t actuallyread;
-
-          if(readthisamountnow > BUFSIZE)
-            readthisamountnow = BUFSIZE;
-
-          actuallyread = (curl_off_t)
-            conn->fread(data->state.buffer, 1, (size_t)readthisamountnow,
-                        conn->fread_in);
-
-          passed += actuallyread;
-          if(actuallyread != readthisamountnow) {
-            failf(data, "Could only read %" FORMAT_OFF_T
-                  " bytes from the input", passed);
-            return CURLE_FTP_COULDNT_USE_REST;
-          }
+      else {
+        if(filesize < data->reqdata.resume_from) {
+          failf(data, "Offset (%" FORMAT_OFF_T
+                ") was beyond file size (%" FORMAT_OFF_T ")",
+                data->reqdata.resume_from, filesize);
+          return CURLE_BAD_DOWNLOAD_RESUME;
         }
-        while(passed != conn->resume_from);
+        /* Now store the number of bytes we are expected to download */
+        ftp->downloadsize = filesize-data->reqdata.resume_from;
+      }
+    }
 
-        /* now, decrease the size of the read */
-        if(data->set.infilesize>0) {
-          data->set.infilesize -= conn->resume_from;
+    if(ftp->downloadsize == 0) {
+      /* no data to transfer */
+      result = Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
+      infof(data, "File already completely downloaded\n");
 
-          if(data->set.infilesize <= 0) {
-            infof(data, "File already completely uploaded\n");
+      /* Set no_transfer so that we won't get any error in Curl_ftp_done()
+       * because we didn't transfer the any file */
+      ftp->no_transfer = TRUE;
+      state(conn, FTP_STOP);
+      return CURLE_OK;
+    }
 
-            /* no data to transfer */
-            result=Curl_Transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
-            (void)result;
+    /* Set resume file transfer offset */
+    infof(data, "Instructs server to resume from offset %" FORMAT_OFF_T
+          "\n", data->reqdata.resume_from);
 
-            /* Set no_transfer so that we won't get any error in
-             * Curl_ftp_done() because we didn't transfer anything! */
-            ftp->no_transfer = TRUE;
+    NBFTPSENDF(conn, "REST %" FORMAT_OFF_T, data->reqdata.resume_from);
 
-            return CURLE_OK;
-          }
-        }
-        /* we've passed, proceed as normal */
-      }
+    state(conn, FTP_RETR_REST);
+
+  }
+  else {
+    /* no resume */
+    NBFTPSENDF(conn, "RETR %s", ftp->file);
+    state(conn, FTP_RETR);
+  }
+
+  return result;
+}
+
+static CURLcode ftp_state_size_resp(struct connectdata *conn,
+                                    int ftpcode,
+                                    ftpstate instate)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data=conn->data;
+  curl_off_t filesize;
+  char *buf = data->state.buffer;
+
+  /* get the size from the ascii string: */
+  filesize = (ftpcode == 213)?curlx_strtoofft(buf+4, NULL, 0):-1;
+
+  if(instate == FTP_SIZE) {
+    if(-1 != filesize) {
+      snprintf(buf, sizeof(data->state.buffer),
+               "Content-Length: %" FORMAT_OFF_T "\r\n", filesize);
+      result = Curl_client_write(conn, CLIENTWRITE_BOTH, buf, 0);
+      if(result)
+        return result;
+    }
+    result = ftp_state_post_size(conn);
+  }
+  else if(instate == FTP_RETR_SIZE)
+    result = ftp_state_post_retr_size(conn, filesize);
+  else if(instate == FTP_STOR_SIZE) {
+    data->reqdata.resume_from = filesize;
+    result = ftp_state_ul_setup(conn, TRUE);
+  }
+
+  return result;
+}
+
+static CURLcode ftp_state_rest_resp(struct connectdata *conn,
+                                    int ftpcode,
+                                    ftpstate instate)
+{
+  CURLcode result = CURLE_OK;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+
+  switch(instate) {
+  case FTP_REST:
+  default:
+    if (ftpcode == 350) {
+      result = Curl_client_write(conn, CLIENTWRITE_BOTH,
+                               (char *)"Accept-ranges: bytes\r\n", 0);
+      if(result)
+        return result;
     }
 
-    /* Send everything on data->state.in to the socket */
-    if(data->set.ftp_append) {
-      /* we append onto the file instead of rewriting it */
-      FTPSENDF(conn, "APPE %s", ftp->file);
+    result = ftp_state_post_rest(conn);
+    break;
+
+  case FTP_RETR_REST:
+    if (ftpcode != 350) {
+      failf(conn->data, "Couldn't use REST");
+      result = CURLE_FTP_COULDNT_USE_REST;
     }
     else {
-      FTPSENDF(conn, "STOR %s", ftp->file);
+      NBFTPSENDF(conn, "RETR %s", ftp->file);
+      state(conn, FTP_RETR);
     }
+    break;
+  }
 
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
+  return result;
+}
+
+static CURLcode ftp_state_stor_resp(struct connectdata *conn,
+                                    int ftpcode)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data = conn->data;
+  struct FTP *ftp = data->reqdata.proto.ftp;
+
+  if(ftpcode>=400) {
+    failf(data, "Failed FTP upload: %0d", ftpcode);
+    /* oops, we never close the sockets! */
+    return CURLE_FTP_COULDNT_STOR_FILE;
+  }
+
+  if(data->set.ftp_use_port) {
+    /* BLOCKING */
+    /* PORT means we are now awaiting the server to connect to us. */
+    result = AllowServerConnect(conn);
+    if( result )
+      return result;
+  }
+
+  if(conn->ssl[SECONDARYSOCKET].use) {
+    /* since we only have a plaintext TCP connection here, we must now
+       do the TLS stuff */
+    infof(data, "Doing the SSL/TLS handshake on the data stream\n");
+    /* BLOCKING */
+    result = Curl_ssl_connect(conn, SECONDARYSOCKET);
     if(result)
       return result;
+  }
+
+  *(ftp->bytecountp)=0;
+
+  /* When we know we're uploading a specified file, we can get the file
+     size prior to the actual upload. */
+
+  Curl_pgrsSetUploadSize(data, data->set.infilesize);
 
-    if(ftpcode>=400) {
-      failf(data, "Failed FTP upload:%s", buf+3);
-      /* oops, we never close the sockets! */
-      return CURLE_FTP_COULDNT_STOR_FILE;
+  result = Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
+                               SECONDARYSOCKET, ftp->bytecountp);
+  state(conn, FTP_STOP);
+
+  return result;
+}
+
+/* for LIST and RETR responses */
+static CURLcode ftp_state_get_resp(struct connectdata *conn,
+                                    int ftpcode,
+                                    ftpstate instate)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data = conn->data;
+  struct FTP *ftp = data->reqdata.proto.ftp;
+  char *buf = data->state.buffer;
+
+  if((ftpcode == 150) || (ftpcode == 125)) {
+
+    /*
+      A;
+      150 Opening BINARY mode data connection for /etc/passwd (2241
+      bytes).  (ok, the file is being transfered)
+
+      B:
+      150 Opening ASCII mode data connection for /bin/ls
+
+      C:
+      150 ASCII data connection for /bin/ls (137.167.104.91,37445) (0 bytes).
+
+      D:
+      150 Opening ASCII mode data connection for /linux/fisk/kpanelrc (0.0.0.0,0) (545 bytes).
+
+      E:
+      125 Data connection already open; Transfer starting. */
+
+    curl_off_t size=-1; /* default unknown size */
+
+
+    /*
+     * It appears that there are FTP-servers that return size 0 for files when
+     * SIZE is used on the file while being in BINARY mode. To work around
+     * that (stupid) behavior, we attempt to parse the RETR response even if
+     * the SIZE returned size zero.
+     *
+     * Debugging help from Salvatore Sorrentino on February 26, 2003.
+     */
+
+    if((instate != FTP_LIST) &&
+       !data->set.prefer_ascii &&
+       (ftp->downloadsize < 1)) {
+      /*
+       * It seems directory listings either don't show the size or very
+       * often uses size 0 anyway. ASCII transfers may very well turn out
+       * that the transfered amount of data is not the same as this line
+       * tells, why using this number in those cases only confuses us.
+       *
+       * Example D above makes this parsing a little tricky */
+      char *bytes;
+      bytes=strstr(buf, " bytes");
+      if(bytes--) {
+        long in=(long)(bytes-buf);
+        /* this is a hint there is size information in there! ;-) */
+        while(--in) {
+          /* scan for the left parenthesis and break there */
+          if('(' == *bytes)
+            break;
+          /* skip only digits */
+          if(!ISDIGIT(*bytes)) {
+            bytes=NULL;
+            break;
+          }
+          /* one more estep backwards */
+          bytes--;
+        }
+        /* if we have nothing but digits: */
+        if(bytes++) {
+          /* get the number! */
+          size = curlx_strtoofft(bytes, NULL, 0);
+        }
+      }
     }
+    else if(ftp->downloadsize > -1)
+      size = ftp->downloadsize;
 
     if(data->set.ftp_use_port) {
-      /* PORT means we are now awaiting the server to connect to us. */
+      /* BLOCKING */
       result = AllowServerConnect(conn);
       if( result )
         return result;
@@ -1768,479 +2213,1179 @@ CURLcode Curl_ftp_nextconnect(struct connectdata *conn)
       /* since we only have a plaintext TCP connection here, we must now
          do the TLS stuff */
       infof(data, "Doing the SSL/TLS handshake on the data stream\n");
-      result = Curl_SSLConnect(conn, SECONDARYSOCKET);
+      result = Curl_ssl_connect(conn, SECONDARYSOCKET);
       if(result)
         return result;
     }
 
-    *bytecountp=0;
+    if(size > data->reqdata.maxdownload && data->reqdata.maxdownload > 0)
+      size = data->reqdata.size = data->reqdata.maxdownload;
 
-    /* When we know we're uploading a specified file, we can get the file
-       size prior to the actual upload. */
+    infof(data, "Maxdownload = %" FORMAT_OFF_T "\n", data->reqdata.maxdownload);
 
-    Curl_pgrsSetUploadSize(data, data->set.infilesize);
+    if(instate != FTP_LIST)
+      infof(data, "Getting file with size: %" FORMAT_OFF_T "\n", size);
 
-    result = Curl_Transfer(conn, -1, -1, FALSE, NULL, /* no download */
-                           SECONDARYSOCKET, bytecountp);
+    /* FTP download: */
+    result=Curl_setup_transfer(conn, SECONDARYSOCKET, size, FALSE,
+                               ftp->bytecountp,
+                               -1, NULL); /* no upload here */
     if(result)
       return result;
 
+    state(conn, FTP_STOP);
   }
-  else if(!conn->bits.no_body) {
-    /* Retrieve file or directory */
-    bool dirlist=FALSE;
-    curl_off_t downloadsize=-1;
-
-    if(conn->bits.use_range && conn->range) {
-      curl_off_t from, to;
-      curl_off_t totalsize;
-      char *ptr;
-      char *ptr2;
-
-      from=curlx_strtoofft(conn->range, &ptr, 0);
-      while(ptr && *ptr && (isspace((int)*ptr) || (*ptr=='-')))
-        ptr++;
-      to=curlx_strtoofft(ptr, &ptr2, 0);
-      if(ptr == ptr2) {
-        /* we didn't get any digit */
-        to=-1;
-      }
-      if((-1 == to) && (from>=0)) {
-        /* X - */
-        conn->resume_from = from;
-        infof(data, "FTP RANGE %" FORMAT_OFF_T " to end of file\n", from);
-      }
-      else if(from < 0) {
-        /* -Y */
-        totalsize = -from;
-        conn->maxdownload = -from;
-        conn->resume_from = from;
-        infof(data, "FTP RANGE the last %" FORMAT_OFF_T " bytes\n", totalsize);
-      }
-      else {
-        /* X-Y */
-        totalsize = to-from;
-        conn->maxdownload = totalsize+1; /* include the last mentioned byte */
-        conn->resume_from = from;
-        infof(data, "FTP RANGE from %" FORMAT_OFF_T
-              " getting %" FORMAT_OFF_T " bytes\n", from, conn->maxdownload);
-      }
-      infof(data, "range-download from %" FORMAT_OFF_T
-            " to %" FORMAT_OFF_T ", totally %" FORMAT_OFF_T " bytes\n",
-            from, to, conn->maxdownload);
-      ftp->dont_check = TRUE; /* dont check for successful transfer */
+  else {
+    if((instate == FTP_LIST) && (ftpcode == 450)) {
+      /* simply no matching files in the dir listing */
+      ftp->no_transfer = TRUE; /* don't download anything */
+      state(conn, FTP_STOP); /* this phase is over */
     }
+    else {
+      failf(data, "RETR response: %03d", ftpcode);
+      return CURLE_FTP_COULDNT_RETR_FILE;
+    }
+  }
 
-    if((data->set.ftp_list_only) || !ftp->file) {
-      /* The specified path ends with a slash, and therefore we think this
-         is a directory that is requested, use LIST. But before that we
-         need to set ASCII transfer mode. */
-      dirlist = TRUE;
-
-      /* Set type to ASCII */
-      result = ftp_transfertype(conn, TRUE /* ASCII enforced */);
-      if(result)
-        return result;
+  return result;
+}
 
-      /* if this output is to be machine-parsed, the NLST command will be
-         better used since the LIST command output is not specified or
-         standard in any way */
+/* after USER, PASS and ACCT */
+static CURLcode ftp_state_loggedin(struct connectdata *conn)
+{
+  CURLcode result = CURLE_OK;
 
-      FTPSENDF(conn, "%s",
-            data->set.customrequest?data->set.customrequest:
-            (data->set.ftp_list_only?"NLST":"LIST"));
-    }
-    else {
-      curl_off_t foundsize;
+#ifdef HAVE_KRB4
+  if(conn->data->set.krb4) {
+    /* We are logged in, asked to use Kerberos. Set the requested
+     * protection level
+     */
+    if(conn->sec_complete)
+      /* BLOCKING */
+      Curl_sec_set_protection_level(conn);
 
-      /* Set type to binary (unless specified ASCII) */
-      result = ftp_transfertype(conn, data->set.ftp_ascii);
+    /* We may need to issue a KAUTH here to have access to the files
+     * do it if user supplied a password
+     */
+    if(conn->passwd && *conn->passwd) {
+      /* BLOCKING */
+      result = Curl_krb_kauth(conn);
       if(result)
         return result;
+    }
+  }
+#endif
+  if(conn->ssl[FIRSTSOCKET].use) {
+    /* PBSZ = PROTECTION BUFFER SIZE.
 
-      /* Send any PREQUOTE strings after transfer type is set? */
-      if(data->set.prequote) {
-        if ((result = ftp_sendquote(conn, data->set.prequote)) != CURLE_OK)
-          return result;
-      }
+    The 'draft-murray-auth-ftp-ssl' (draft 12, page 7) says:
 
-      /* Attempt to get the size, it'll be useful in some cases: for resumed
-         downloads and when talking to servers that don't give away the size
-         in the RETR response line. */
-      result = ftp_getsize(conn, ftp->file, &foundsize);
-      if(CURLE_OK == result) {
-        if (data->set.max_filesize && foundsize > data->set.max_filesize) {
-          failf(data, "Maximum file size exceeded");
-          return CURLE_FILESIZE_EXCEEDED;
-        }
-        downloadsize = foundsize;
-      }
+    Specifically, the PROT command MUST be preceded by a PBSZ
+    command and a PBSZ command MUST be preceded by a successful
+    security data exchange (the TLS negotiation in this case)
 
-      if(conn->resume_from) {
+    ... (and on page 8):
 
-        /* Daniel: (August 4, 1999)
-         *
-         * We start with trying to use the SIZE command to figure out the size
-         * of the file we're gonna get. If we can get the size, this is by far
-         * the best way to know if we're trying to resume beyond the EOF.
-         *
-         * Daniel, November 28, 2001. We *always* get the size on downloads
-         * now, so it is done before this even when not doing resumes. I saved
-         * the comment above for nostalgical reasons! ;-)
-         */
-        if(CURLE_OK != result) {
-          infof(data, "ftp server doesn't support SIZE\n");
-          /* We couldn't get the size and therefore we can't know if there
-             really is a part of the file left to get, although the server
-             will just close the connection when we start the connection so it
-             won't cause us any harm, just not make us exit as nicely. */
-        }
-        else {
-          /* We got a file size report, so we check that there actually is a
-             part of the file left to get, or else we go home.  */
-          if(conn->resume_from< 0) {
-            /* We're supposed to download the last abs(from) bytes */
-            if(foundsize < -conn->resume_from) {
-              failf(data, "Offset (%" FORMAT_OFF_T
-                    ") was beyond file size (%" FORMAT_OFF_T ")",
-                    conn->resume_from, foundsize);
-              return CURLE_FTP_BAD_DOWNLOAD_RESUME;
-            }
-            /* convert to size to download */
-            downloadsize = -conn->resume_from;
-            /* download from where? */
-            conn->resume_from = foundsize - downloadsize;
-          }
-          else {
-            if(foundsize < conn->resume_from) {
-              failf(data, "Offset (%" FORMAT_OFF_T
-                    ") was beyond file size (%" FORMAT_OFF_T ")",
-                    conn->resume_from, foundsize);
-              return CURLE_FTP_BAD_DOWNLOAD_RESUME;
-            }
-            /* Now store the number of bytes we are expected to download */
-            downloadsize = foundsize-conn->resume_from;
-          }
-        }
+    Thus the PBSZ command must still be issued, but must have a
+    parameter of '0' to indicate that no buffering is taking place
+    and the data connection should not be encapsulated.
+    */
+    NBFTPSENDF(conn, "PBSZ %d", 0);
+    state(conn, FTP_PBSZ);
+  }
+  else {
+    result = ftp_state_pwd(conn);
+  }
+  return result;
+}
 
-        if (downloadsize == 0) {
-          /* no data to transfer */
-          result=Curl_Transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
-          (void)result;
-          infof(data, "File already completely downloaded\n");
+/* for USER and PASS responses */
+static CURLcode ftp_state_user_resp(struct connectdata *conn,
+                                    int ftpcode,
+                                    ftpstate instate)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data = conn->data;
+  struct FTP *ftp = data->reqdata.proto.ftp;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  (void)instate; /* no use for this yet */
 
-          /* Set no_transfer so that we won't get any error in Curl_ftp_done()
-           * because we didn't transfer the any file */
-          ftp->no_transfer = TRUE;
-          return CURLE_OK;
-        }
+  if((ftpcode == 331) && (ftpc->state == FTP_USER)) {
+    /* 331 Password required for ...
+       (the server requires to send the user's password too) */
+    NBFTPSENDF(conn, "PASS %s", ftp->passwd?ftp->passwd:"");
+    state(conn, FTP_PASS);
+  }
+  else if(ftpcode/100 == 2) {
+    /* 230 User ... logged in.
+       (the user logged in with or without password) */
+    result = ftp_state_loggedin(conn);
+  }
+  else if(ftpcode == 332) {
+    if(data->set.ftp_account) {
+      NBFTPSENDF(conn, "ACCT %s", data->set.ftp_account);
+      state(conn, FTP_ACCT);
+    }
+    else {
+      failf(data, "ACCT requested but none available");
+      result = CURLE_LOGIN_DENIED;
+    }
+  }
+  else {
+    /* All other response codes, like:
 
-        /* Set resume file transfer offset */
-        infof(data, "Instructs server to resume from offset %" FORMAT_OFF_T
-              "\n",
-              conn->resume_from);
+    530 User ... access denied
+    (the server denies to log the specified user) */
 
-        FTPSENDF(conn, "REST %" FORMAT_OFF_T, conn->resume_from);
+    if (conn->data->set.ftp_alternative_to_user &&
+        !conn->data->state.ftp_trying_alternative) {
+      /* Ok, USER failed.  Let's try the supplied command. */
+      NBFTPSENDF(conn, "%s", conn->data->set.ftp_alternative_to_user);
+      conn->data->state.ftp_trying_alternative = TRUE;
+      state(conn, FTP_USER);
+      result = CURLE_OK;
+    }
+    else {
+      failf(data, "Access denied: %03d", ftpcode);
+      result = CURLE_LOGIN_DENIED;
+    }
+  }
+  return result;
+}
 
-        result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-        if(result)
-          return result;
+/* for ACCT response */
+static CURLcode ftp_state_acct_resp(struct connectdata *conn,
+                                    int ftpcode)
+{
+  CURLcode result = CURLE_OK;
+  struct SessionHandle *data = conn->data;
+  if(ftpcode != 230) {
+    failf(data, "ACCT rejected by server: %03d", ftpcode);
+    result = CURLE_FTP_WEIRD_PASS_REPLY; /* FIX */
+  }
+  else
+    result = ftp_state_loggedin(conn);
 
-        if(ftpcode != 350) {
-          failf(data, "Couldn't use REST: %s", buf+4);
-          return CURLE_FTP_COULDNT_USE_REST;
-        }
-      }
+  return result;
+}
 
-      FTPSENDF(conn, "RETR %s", ftp->file);
-    }
 
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
+static CURLcode ftp_statemach_act(struct connectdata *conn)
+{
+  CURLcode result;
+  curl_socket_t sock = conn->sock[FIRSTSOCKET];
+  struct SessionHandle *data=conn->data;
+  int ftpcode;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  static const char * const ftpauth[]  = {
+    "SSL", "TLS"
+  };
+  size_t nread = 0;
+
+  if(ftpc->sendleft) {
+    /* we have a piece of a command still left to send */
+    ssize_t written;
+    result = Curl_write(conn, sock, ftpc->sendthis + ftpc->sendsize -
+                        ftpc->sendleft, ftpc->sendleft, &written);
     if(result)
       return result;
 
-    if((ftpcode == 150) || (ftpcode == 125)) {
+    if(written != (ssize_t)ftpc->sendleft) {
+      /* only a fraction was sent */
+      ftpc->sendleft -= written;
+    }
+    else {
+      free(ftpc->sendthis);
+      ftpc->sendthis=NULL;
+      ftpc->sendleft = ftpc->sendsize = 0;
+      ftpc->response = Curl_tvnow();
+    }
+    return CURLE_OK;
+  }
 
-      /*
-        A;
-        150 Opening BINARY mode data connection for /etc/passwd (2241
-        bytes).  (ok, the file is being transfered)
+  /* we read a piece of response */
+  result = ftp_readresp(sock, conn, &ftpcode, &nread);
+  if(result)
+    return result;
 
-        B:
-        150 Opening ASCII mode data connection for /bin/ls
+  if(ftpcode) {
+    /* we have now received a full FTP server response */
+    switch(ftpc->state) {
+    case FTP_WAIT220:
+      if(ftpcode != 220) {
+        failf(data, "This doesn't seem like a nice ftp-server response");
+        return CURLE_FTP_WEIRD_SERVER_REPLY;
+      }
 
-        C:
-        150 ASCII data connection for /bin/ls (137.167.104.91,37445) (0 bytes).
+      /* We have received a 220 response fine, now we proceed. */
+#ifdef HAVE_KRB4
+      if(data->set.krb4) {
+        /* If not anonymous login, try a secure login. Note that this
+           procedure is still BLOCKING. */
 
-        D:
-        150 Opening ASCII mode data connection for /linux/fisk/kpanelrc (0.0.0.0,0) (545 bytes).
+        Curl_sec_request_prot(conn, "private");
+        /* We set private first as default, in case the line below fails to
+           set a valid level */
+        Curl_sec_request_prot(conn, data->set.krb4_level);
 
-        E:
-        125 Data connection already open; Transfer starting. */
+        if(Curl_sec_login(conn) != 0)
+          infof(data, "Logging in with password in cleartext!\n");
+        else
+          infof(data, "Authentication successful\n");
+      }
+#endif
 
-      curl_off_t size=-1; /* default unknown size */
+      if(data->set.ftp_ssl && !conn->ssl[FIRSTSOCKET].use) {
+        /* We don't have a SSL/TLS connection yet, but FTPS is
+           requested. Try a FTPS connection now */
+
+        ftpc->count3=0;
+        switch(data->set.ftpsslauth) {
+        case CURLFTPAUTH_DEFAULT:
+        case CURLFTPAUTH_SSL:
+          ftpc->count2 = 1; /* add one to get next */
+          ftpc->count1 = 0;
+          break;
+        case CURLFTPAUTH_TLS:
+          ftpc->count2 = -1; /* subtract one to get next */
+          ftpc->count1 = 1;
+          break;
+        default:
+          failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %d\n",
+                data->set.ftpsslauth);
+          return CURLE_FAILED_INIT; /* we don't know what to do */
+        }
+        NBFTPSENDF(conn, "AUTH %s", ftpauth[ftpc->count1]);
+        state(conn, FTP_AUTH);
+      }
+      else {
+        result = ftp_state_user(conn);
+        if(result)
+          return result;
+      }
 
+      break;
 
-      /*
-       * It appears that there are FTP-servers that return size 0 for files
-       * when SIZE is used on the file while being in BINARY mode. To work
-       * around that (stupid) behavior, we attempt to parse the RETR response
-       * even if the SIZE returned size zero.
+    case FTP_AUTH:
+      /* we have gotten the response to a previous AUTH command */
+
+      /* RFC2228 (page 5) says:
        *
-       * Debugging help from Salvatore Sorrentino on February 26, 2003.
+       * If the server is willing to accept the named security mechanism,
+       * and does not require any security data, it must respond with
+       * reply code 234/334.
        */
 
-      if(!dirlist &&
-         !data->set.ftp_ascii &&
-         (downloadsize < 1)) {
-        /*
-         * It seems directory listings either don't show the size or very
-         * often uses size 0 anyway. ASCII transfers may very well turn out
-         * that the transfered amount of data is not the same as this line
-         * tells, why using this number in those cases only confuses us.
-         *
-         * Example D above makes this parsing a little tricky */
-        char *bytes;
-        bytes=strstr(buf, " bytes");
-        if(bytes--) {
-          long in=bytes-buf;
-          /* this is a hint there is size information in there! ;-) */
-          while(--in) {
-            /* scan for the parenthesis and break there */
-            if('(' == *bytes)
-              break;
-            /* if only skip digits, or else we're in deep trouble */
-            if(!isdigit((int)*bytes)) {
-              bytes=NULL;
-              break;
-            }
-            /* one more estep backwards */
-            bytes--;
-          }
-          /* only if we have nothing but digits: */
-          if(bytes++) {
-            /* get the number! */
-            size = curlx_strtoofft(bytes, NULL, 0);
-          }
-
+      if((ftpcode == 234) || (ftpcode == 334)) {
+        /* Curl_ssl_connect is BLOCKING */
+        result = Curl_ssl_connect(conn, FIRSTSOCKET);
+        if(CURLE_OK == result) {
+          conn->protocol |= PROT_FTPS;
+          conn->ssl[SECONDARYSOCKET].use = FALSE; /* clear-text data */
+          result = ftp_state_user(conn);
         }
       }
-      else if(downloadsize > -1)
-        size = downloadsize;
+      else if(ftpc->count3 < 1) {
+        ftpc->count3++;
+        ftpc->count1 += ftpc->count2; /* get next attempt */
+        result = Curl_nbftpsendf(conn, "AUTH %s", ftpauth[ftpc->count1]);
+        /* remain in this same state */
+      }
+      else {
+        if(data->set.ftp_ssl > CURLFTPSSL_TRY)
+          /* we failed and CURLFTPSSL_CONTROL or CURLFTPSSL_ALL is set */
+          result = CURLE_FTP_SSL_FAILED;
+        else
+          /* ignore the failure and continue */
+          result = ftp_state_user(conn);
+      }
+
+      if(result)
+        return result;
+      break;
+
+    case FTP_USER:
+    case FTP_PASS:
+      result = ftp_state_user_resp(conn, ftpcode, ftpc->state);
+      break;
+
+    case FTP_ACCT:
+      result = ftp_state_acct_resp(conn, ftpcode);
+      break;
+
+    case FTP_PBSZ:
+      /* FIX: check response code */
+
+      /* For TLS, the data connection can have one of two security levels.
+
+      1) Clear (requested by 'PROT C')
 
-      if(data->set.ftp_use_port) {
-        result = AllowServerConnect(conn);
-        if( result )
+      2)Private (requested by 'PROT P')
+      */
+      if(!conn->ssl[SECONDARYSOCKET].use) {
+        NBFTPSENDF(conn, "PROT %c",
+                   data->set.ftp_ssl == CURLFTPSSL_CONTROL ? 'C' : 'P');
+        state(conn, FTP_PROT);
+      }
+      else {
+        result = ftp_state_pwd(conn);
+        if(result)
           return result;
       }
 
-      if(conn->ssl[SECONDARYSOCKET].use) {
-        /* since we only have a plaintext TCP connection here, we must now
-           do the TLS stuff */
-        infof(data, "Doing the SSL/TLS handshake on the data stream\n");
-        result = Curl_SSLConnect(conn, SECONDARYSOCKET);
+      break;
+
+    case FTP_PROT:
+      if(ftpcode/100 == 2)
+        /* We have enabled SSL for the data connection! */
+        conn->ssl[SECONDARYSOCKET].use =
+          (bool)(data->set.ftp_ssl != CURLFTPSSL_CONTROL);
+      /* FTP servers typically responds with 500 if they decide to reject
+         our 'P' request */
+      else if(data->set.ftp_ssl> CURLFTPSSL_CONTROL)
+        /* we failed and bails out */
+        return CURLE_FTP_SSL_FAILED;
+
+      if(data->set.ftp_use_ccc) {
+        /* CCC - Clear Command Channel
+         */
+        NBFTPSENDF(conn, "CCC", NULL);
+        state(conn, FTP_CCC);
+      }
+      else {
+        result = ftp_state_pwd(conn);
         if(result)
           return result;
       }
+      break;
 
-      if(size > conn->maxdownload && conn->maxdownload > 0)
-        size = conn->size = conn->maxdownload;
+    case FTP_CCC:
+      if (ftpcode < 500) {
+    /* First shut down the SSL layer (note: this call will block) */
+        result = Curl_ssl_shutdown(conn, FIRSTSOCKET);
 
-      infof(data, "Getting file with size: %" FORMAT_OFF_T "\n", size);
+        if(result) {
+          failf(conn->data, "Failed to clear the command channel (CCC)");
+          return result;
+        }
+      }
 
-      /* FTP download: */
-      result=Curl_Transfer(conn, SECONDARYSOCKET, size, FALSE,
-                           bytecountp,
-                           -1, NULL); /* no upload here */
+      /* Then continue as normal */
+      result = ftp_state_pwd(conn);
       if(result)
         return result;
-    }
-    else {
-      if(dirlist && (ftpcode == 450)) {
-        /* simply no matching files */
-        ftp->no_transfer = TRUE; /* don't think we should download anything */
+      break;
+
+    case FTP_PWD:
+      if(ftpcode == 257) {
+        char *dir = (char *)malloc(nread+1);
+        char *store=dir;
+        char *ptr=&data->state.buffer[4];  /* start on the first letter */
+
+        if(!dir)
+          return CURLE_OUT_OF_MEMORY;
+
+        /* Reply format is like
+           257<space>"<directory-name>"<space><commentary> and the RFC959
+           says
+
+           The directory name can contain any character; embedded
+           double-quotes should be escaped by double-quotes (the
+           "quote-doubling" convention).
+        */
+        if('\"' == *ptr) {
+          /* it started good */
+          ptr++;
+          while(ptr && *ptr) {
+            if('\"' == *ptr) {
+              if('\"' == ptr[1]) {
+                /* "quote-doubling" */
+                *store = ptr[1];
+                ptr++;
+              }
+              else {
+                /* end of path */
+                *store = '\0'; /* zero terminate */
+                break; /* get out of this loop */
+              }
+            }
+            else
+              *store = *ptr;
+            store++;
+            ptr++;
+          }
+          ftpc->entrypath =dir; /* remember this */
+          infof(data, "Entry path is '%s'\n", ftpc->entrypath);
+          /* also save it where getinfo can access it: */
+          data->state.most_recent_ftp_entrypath = ftpc->entrypath;
+        }
+        else {
+          /* couldn't get the path */
+          free(dir);
+          infof(data, "Failed to figure out path\n");
+        }
+      }
+      state(conn, FTP_STOP); /* we are done with the CONNECT phase! */
+      DEBUGF(infof(data, "protocol connect phase DONE\n"));
+      break;
+
+    case FTP_QUOTE:
+    case FTP_POSTQUOTE:
+    case FTP_RETR_PREQUOTE:
+    case FTP_STOR_PREQUOTE:
+      if(ftpcode >= 400) {
+        failf(conn->data, "QUOT command failed with %03d", ftpcode);
+        return CURLE_FTP_QUOTE_ERROR;
+      }
+      result = ftp_state_quote(conn, FALSE, ftpc->state);
+      if(result)
+        return result;
+
+      break;
+
+    case FTP_CWD:
+      if(ftpcode/100 != 2) {
+        /* failure to CWD there */
+        if(conn->data->set.ftp_create_missing_dirs &&
+           ftpc->count1 && !ftpc->count2) {
+          /* try making it */
+          ftpc->count2++; /* counter to prevent CWD-MKD loops */
+          NBFTPSENDF(conn, "MKD %s", ftpc->dirs[ftpc->count1 - 1]);
+          state(conn, FTP_MKD);
+        }
+        else {
+          /* return failure */
+          failf(data, "Server denied you to change to the given directory");
+          ftpc->cwdfail = TRUE; /* don't remember this path as we failed
+                                   to enter it */
+          return CURLE_FTP_ACCESS_DENIED;
+        }
       }
       else {
-        failf(data, "%s", buf+4);
-        return CURLE_FTP_COULDNT_RETR_FILE;
+        /* success */
+        ftpc->count2=0;
+        if(++ftpc->count1 <= ftpc->dirdepth) {
+          /* send next CWD */
+          NBFTPSENDF(conn, "CWD %s", ftpc->dirs[ftpc->count1 - 1]);
+        }
+        else {
+          result = ftp_state_post_cwd(conn);
+          if(result)
+            return result;
+        }
       }
+      break;
+
+    case FTP_MKD:
+      if(ftpcode/100 != 2) {
+        /* failure to MKD the dir */
+        failf(data, "Failed to MKD dir: %03d", ftpcode);
+        return CURLE_FTP_ACCESS_DENIED;
+      }
+      state(conn, FTP_CWD);
+      /* send CWD */
+      NBFTPSENDF(conn, "CWD %s", ftpc->dirs[ftpc->count1 - 1]);
+      break;
+
+    case FTP_MDTM:
+      result = ftp_state_mdtm_resp(conn, ftpcode);
+      break;
+
+    case FTP_TYPE:
+    case FTP_LIST_TYPE:
+    case FTP_RETR_TYPE:
+    case FTP_STOR_TYPE:
+      result = ftp_state_type_resp(conn, ftpcode, ftpc->state);
+      break;
+
+    case FTP_SIZE:
+    case FTP_RETR_SIZE:
+    case FTP_STOR_SIZE:
+      result = ftp_state_size_resp(conn, ftpcode, ftpc->state);
+      break;
+
+    case FTP_REST:
+    case FTP_RETR_REST:
+      result = ftp_state_rest_resp(conn, ftpcode, ftpc->state);
+      break;
+
+    case FTP_PASV:
+      result = ftp_state_pasv_resp(conn, ftpcode);
+      break;
+
+    case FTP_PORT:
+      result = ftp_state_port_resp(conn, ftpcode);
+      break;
+
+    case FTP_LIST:
+    case FTP_RETR:
+      result = ftp_state_get_resp(conn, ftpcode, ftpc->state);
+      break;
+
+    case FTP_STOR:
+      result = ftp_state_stor_resp(conn, ftpcode);
+      break;
+
+    case FTP_QUIT:
+      /* fallthrough, just stop! */
+    default:
+      /* internal error */
+      state(conn, FTP_STOP);
+      break;
     }
+  } /* if(ftpcode) */
+
+  return result;
+}
+
+/* Returns timeout in ms. 0 or negative number means the timeout has already
+   triggered */
+static long ftp_state_timeout(struct connectdata *conn)
+{
+  struct SessionHandle *data=conn->data;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  long timeout_ms=360000; /* in milliseconds */
+
+  if(data->set.ftp_response_timeout )
+    /* if CURLOPT_FTP_RESPONSE_TIMEOUT is set, use that to determine remaining
+       time.  Also, use ftp->response because FTP_RESPONSE_TIMEOUT is supposed
+       to govern the response for any given ftp response, not for the time
+       from connect to the given ftp response. */
+    timeout_ms = data->set.ftp_response_timeout*1000 - /* timeout time */
+      Curl_tvdiff(Curl_tvnow(), ftpc->response); /* spent time */
+  else if(data->set.timeout)
+    /* if timeout is requested, find out how much remaining time we have */
+    timeout_ms = data->set.timeout*1000 - /* timeout time */
+      Curl_tvdiff(Curl_tvnow(), conn->now); /* spent time */
+  else
+    /* Without a requested timeout, we only wait 'response_time' seconds for
+       the full response to arrive before we bail out */
+    timeout_ms = ftpc->response_time*1000 -
+      Curl_tvdiff(Curl_tvnow(), ftpc->response); /* spent time */
+
+  return timeout_ms;
+}
+
 
+/* called repeatedly until done from multi.c */
+CURLcode Curl_ftp_multi_statemach(struct connectdata *conn,
+                                  bool *done)
+{
+  curl_socket_t sock = conn->sock[FIRSTSOCKET];
+  int rc;
+  struct SessionHandle *data=conn->data;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  CURLcode result = CURLE_OK;
+  long timeout_ms = ftp_state_timeout(conn);
+
+  *done = FALSE; /* default to not done yet */
+
+  if(timeout_ms <= 0) {
+    failf(data, "FTP response timeout");
+    return CURLE_OPERATION_TIMEDOUT;
   }
-  /* end of transfer */
+
+  rc = Curl_select(ftpc->sendleft?CURL_SOCKET_BAD:sock, /* reading */
+                   ftpc->sendleft?sock:CURL_SOCKET_BAD, /* writing */
+                   0);
+
+  if(rc == -1) {
+    failf(data, "select error");
+    return CURLE_OUT_OF_MEMORY;
+  }
+  else if(rc != 0) {
+    result = ftp_statemach_act(conn);
+    *done = (bool)(ftpc->state == FTP_STOP);
+  }
+  /* if rc == 0, then select() timed out */
+
+  return result;
+}
+
+static CURLcode ftp_easy_statemach(struct connectdata *conn)
+{
+  curl_socket_t sock = conn->sock[FIRSTSOCKET];
+  int rc;
+  struct SessionHandle *data=conn->data;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  CURLcode result = CURLE_OK;
+
+  while(ftpc->state != FTP_STOP) {
+    long timeout_ms = ftp_state_timeout(conn);
+
+    if(timeout_ms <=0 ) {
+      failf(data, "FTP response timeout");
+      return CURLE_OPERATION_TIMEDOUT; /* already too little time */
+    }
+
+    rc = Curl_select(ftpc->sendleft?CURL_SOCKET_BAD:sock, /* reading */
+                     ftpc->sendleft?sock:CURL_SOCKET_BAD, /* writing */
+                     (int)timeout_ms);
+
+    if(rc == -1) {
+      failf(data, "select error");
+      return CURLE_OUT_OF_MEMORY;
+    }
+    else if(rc == 0) {
+      result = CURLE_OPERATION_TIMEDOUT;
+      break;
+    }
+    else {
+      result = ftp_statemach_act(conn);
+      if(result)
+        break;
+    }
+  }
+
+  return result;
+}
+
+/*
+ * Allocate and initialize the struct FTP for the current SessionHandle.  If
+ * need be.
+ */
+static CURLcode ftp_init(struct connectdata *conn)
+{
+  struct SessionHandle *data = conn->data;
+  struct FTP *ftp;
+  if(data->reqdata.proto.ftp)
+    return CURLE_OK;
+
+  ftp = (struct FTP *)calloc(sizeof(struct FTP), 1);
+  if(!ftp)
+    return CURLE_OUT_OF_MEMORY;
+
+  data->reqdata.proto.ftp = ftp;
+
+  /* get some initial data into the ftp struct */
+  ftp->bytecountp = &data->reqdata.keep.bytecount;
+
+  /* no need to duplicate them, this connectdata struct won't change */
+  ftp->user = conn->user;
+  ftp->passwd = conn->passwd;
+  if (isBadFtpString(ftp->user) || isBadFtpString(ftp->passwd))
+    return CURLE_URL_MALFORMAT;
 
   return CURLE_OK;
 }
 
-/***********************************************************************
- *
- * ftp_perform()
+/*
+ * Curl_ftp_connect() should do everything that is to be considered a part of
+ * the connection phase.
  *
- * This is the actual DO function for FTP. Get a file/directory according to
- * the options previously setup.
+ * The variable 'done' points to will be TRUE if the protocol-layer connect
+ * phase is done when this function returns, or FALSE is not. When called as
+ * a part of the easy interface, it will always be TRUE.
  */
-
-static
-CURLcode ftp_perform(struct connectdata *conn,
-                     bool *connected)  /* for the TCP connect status after
-                                          PASV / PORT */
+CURLcode Curl_ftp_connect(struct connectdata *conn,
+                          bool *done) /* see description above */
 {
-  /* this is FTP and no proxy */
-  CURLcode result=CURLE_OK;
+  CURLcode result;
+#ifndef CURL_DISABLE_HTTP
+  /* for FTP over HTTP proxy */
+  struct HTTP http_proxy;
+  struct FTP *ftp_save;
+#endif   /* CURL_DISABLE_HTTP */
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
   struct SessionHandle *data=conn->data;
-  char *buf = data->state.buffer; /* this is our buffer */
 
-  /* the ftp struct is already inited in Curl_ftp_connect() */
-  struct FTP *ftp = conn->proto.ftp;
+  *done = FALSE; /* default to not done yet */
+
+  if (data->reqdata.proto.ftp) {
+    Curl_ftp_disconnect(conn);
+    free(data->reqdata.proto.ftp);
+    data->reqdata.proto.ftp = NULL;
+  }
+
+  result = ftp_init(conn);
+  if(result)
+    return result;
+
+  /* We always support persistant connections on ftp */
+  conn->bits.close = FALSE;
+
+  ftpc->response_time = 3600; /* set default response time-out */
+
+#ifndef CURL_DISABLE_HTTP
+  if (conn->bits.tunnel_proxy && conn->bits.httpproxy) {
+    /* BLOCKING */
+    /* We want "seamless" FTP operations through HTTP proxy tunnel */
+
+    /* Curl_proxyCONNECT is based on a pointer to a struct HTTP at the member
+     * conn->proto.http; we want FTP through HTTP and we have to change the
+     * member temporarily for connecting to the HTTP proxy. After
+     * Curl_proxyCONNECT we have to set back the member to the original struct
+     * FTP pointer
+     */
+    ftp_save = data->reqdata.proto.ftp;
+    memset(&http_proxy, 0, sizeof(http_proxy));
+    data->reqdata.proto.http = &http_proxy;
+
+    result = Curl_proxyCONNECT(conn, FIRSTSOCKET,
+                               conn->host.name, conn->remote_port);
 
-  /* Send any QUOTE strings? */
-  if(data->set.quote) {
-    if ((result = ftp_sendquote(conn, data->set.quote)) != CURLE_OK)
+    data->reqdata.proto.ftp = ftp_save;
+
+    if(CURLE_OK != result)
       return result;
   }
+#endif   /* CURL_DISABLE_HTTP */
 
-  /* This is a re-used connection. Since we change directory to where the
-     transfer is taking place, we must now get back to the original dir
-     where we ended up after login: */
-  if (conn->bits.reuse && ftp->entrypath) {
-    if ((result = ftp_cwd_and_mkd(conn, ftp->entrypath)) != CURLE_OK)
+  if(conn->protocol & PROT_FTPS) {
+    /* BLOCKING */
+    /* FTPS is simply ftp with SSL for the control channel */
+    /* now, perform the SSL initialization for this socket */
+    result = Curl_ssl_connect(conn, FIRSTSOCKET);
+    if(result)
       return result;
   }
 
-  {
-    int i; /* counter for loop */
-    for (i=0; i < ftp->dirdepth; i++) {
-      /* RFC 1738 says empty components should be respected too, but
-         that is plain stupid since CWD can't be used with an empty argument */
-      if ((result = ftp_cwd_and_mkd(conn, ftp->dirs[i])) != CURLE_OK)
-        return result;
+  /* When we connect, we start in the state where we await the 220
+     response */
+  ftp_respinit(conn); /* init the response reader stuff */
+  state(conn, FTP_WAIT220);
+  ftpc->response = Curl_tvnow(); /* start response time-out now! */
+
+  if(data->state.used_interface == Curl_if_multi)
+    result = Curl_ftp_multi_statemach(conn, done);
+  else {
+    result = ftp_easy_statemach(conn);
+    if(!result)
+      *done = TRUE;
+  }
+
+  return result;
+}
+
+/***********************************************************************
+ *
+ * Curl_ftp_done()
+ *
+ * The DONE function. This does what needs to be done after a single DO has
+ * performed.
+ *
+ * Input argument is already checked for validity.
+ */
+CURLcode Curl_ftp_done(struct connectdata *conn, CURLcode status, bool premature)
+{
+  struct SessionHandle *data = conn->data;
+  struct FTP *ftp = data->reqdata.proto.ftp;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  ssize_t nread;
+  int ftpcode;
+  CURLcode result=CURLE_OK;
+  bool was_ctl_valid = ftpc->ctl_valid;
+  size_t flen;
+  size_t dlen;
+  char *path;
+  char *path_to_use = data->reqdata.path;
+  struct Curl_transfer_keeper *k = &data->reqdata.keep;
+
+  if(!ftp)
+    /* When the easy handle is removed from the multi while libcurl is still
+     * trying to resolve the host name, it seems that the ftp struct is not
+     * yet initialized, but the removal action calls Curl_done() which calls
+     * this function. So we simply return success if no ftp pointer is set.
+     */
+    return CURLE_OK;
+
+  switch(status) {
+  case CURLE_BAD_DOWNLOAD_RESUME:
+  case CURLE_FTP_WEIRD_PASV_REPLY:
+  case CURLE_FTP_PORT_FAILED:
+  case CURLE_FTP_COULDNT_SET_BINARY:
+  case CURLE_FTP_COULDNT_RETR_FILE:
+  case CURLE_FTP_COULDNT_STOR_FILE:
+  case CURLE_FTP_ACCESS_DENIED:
+    /* the connection stays alive fine even though this happened */
+    /* fall-through */
+  case CURLE_OK: /* doesn't affect the control connection's status */
+    if (!premature) {
+      ftpc->ctl_valid = was_ctl_valid;
+      break;
     }
+    /* until we cope better with prematurely ended requests, let them 
+     * fallback as if in complete failure */
+  default:       /* by default, an error means the control connection is
+                    wedged and should not be used anymore */
+    ftpc->ctl_valid = FALSE;
+    ftpc->cwdfail = TRUE; /* set this TRUE to prevent us to remember the
+                             current path, as this connection is going */
+    conn->bits.close = TRUE; /* marked for closure */
+    break;
   }
 
-  /* Requested time of file or time-depended transfer? */
-  if((data->set.get_filetime || data->set.timecondition) &&
-     ftp->file) {
-    result = ftp_getfiletime(conn, ftp->file);
-    switch( result )
-      {
-      case CURLE_FTP_COULDNT_RETR_FILE:
-      case CURLE_OK:
-        if(data->set.timecondition) {
-          if((data->info.filetime > 0) && (data->set.timevalue > 0)) {
-            switch(data->set.timecondition) {
-            case CURL_TIMECOND_IFMODSINCE:
-            default:
-              if(data->info.filetime < data->set.timevalue) {
-                infof(data, "The requested document is not new enough\n");
-                ftp->no_transfer = TRUE; /* mark this to not transfer data */
-                return CURLE_OK;
-              }
-              break;
-            case CURL_TIMECOND_IFUNMODSINCE:
-              if(data->info.filetime > data->set.timevalue) {
-                infof(data, "The requested document is not old enough\n");
-                ftp->no_transfer = TRUE; /* mark this to not transfer data */
-                return CURLE_OK;
-              }
-              break;
-            } /* switch */
-          }
-          else {
-            infof(data, "Skipping time comparison\n");
-          }
-        }
-        break;
-      default:
-        return result;
-      } /* switch */
+  /* now store a copy of the directory we are in */
+  if(ftpc->prevpath)
+    free(ftpc->prevpath);
+
+  /* get the "raw" path */
+  path = curl_easy_unescape(data, path_to_use, 0, NULL);
+  if(!path)
+    return CURLE_OUT_OF_MEMORY;
+
+  flen = ftp->file?strlen(ftp->file):0; /* file is "raw" already */
+  dlen = strlen(path)-flen;
+  if(dlen && !ftpc->cwdfail) {
+    ftpc->prevpath = path;
+    if(flen)
+      /* if 'path' is not the whole string */
+      ftpc->prevpath[dlen]=0; /* terminate */
+    infof(data, "Remembering we are in dir %s\n", ftpc->prevpath);
+  }
+  else {
+    ftpc->prevpath = NULL; /* no path */
+    free(path);
   }
+  /* free the dir tree and file parts */
+  freedirs(conn);
 
-  /* If we have selected NOBODY and HEADER, it means that we only want file
-     information. Which in FTP can't be much more than the file size and
-     date. */
-  if(conn->bits.no_body && data->set.include_header && ftp->file) {
-    /* The SIZE command is _not_ RFC 959 specified, and therefor many servers
-       may not support it! It is however the only way we have to get a file's
-       size! */
-    curl_off_t filesize;
-    ssize_t nread;
-    int ftpcode;
+#ifdef HAVE_KRB4
+  Curl_sec_fflush_fd(conn, conn->sock[SECONDARYSOCKET]);
+#endif
 
-    ftp->no_transfer = TRUE; /* this means no actual transfer is made */
+  /* shut down the socket to inform the server we're done */
+
+#ifdef _WIN32_WCE
+  shutdown(conn->sock[SECONDARYSOCKET],2);  /* SD_BOTH */
+#endif
+
+  sclose(conn->sock[SECONDARYSOCKET]);
+
+  conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
+
+  if(!ftp->no_transfer && !status && !premature) {
+    /*
+     * Let's see what the server says about the transfer we just performed,
+     * but lower the timeout as sometimes this connection has died while the
+     * data has been transfered. This happens when doing through NATs etc that
+     * abandon old silent connections.
+     */
+    long old_time = ftpc->response_time;
+
+    ftpc->response_time = 60; /* give it only a minute for now */
+
+    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
+
+    ftpc->response_time = old_time; /* set this back to previous value */
+
+    if(!nread && (CURLE_OPERATION_TIMEDOUT == result)) {
+      failf(data, "control connection looks dead");
+      ftpc->ctl_valid = FALSE; /* mark control connection as bad */
+      return result;
+    }
 
-    /* Some servers return different sizes for different modes, and thus we
-       must set the proper type before we check the size */
-    result = ftp_transfertype(conn, data->set.ftp_ascii);
     if(result)
       return result;
 
-    /* failing to get size is not a serious error */
-    result = ftp_getsize(conn, ftp->file, &filesize);
+    if(!ftpc->dont_check) {
+      /* 226 Transfer complete, 250 Requested file action okay, completed. */
+      if((ftpcode != 226) && (ftpcode != 250)) {
+        failf(data, "server did not report OK, got %d", ftpcode);
+        result = CURLE_PARTIAL_FILE;
+      }
+    }
+  }
 
-    if(CURLE_OK == result) {
-      snprintf(buf, sizeof(data->state.buffer),
-               "Content-Length: %" FORMAT_OFF_T "\r\n", filesize);
-      result = Curl_client_write(data, CLIENTWRITE_BOTH, buf, 0);
-      if(result)
-        return result;
+  if(result || premature)
+    /* the response code from the transfer showed an error already so no
+       use checking further */
+    ;
+  else if(data->set.upload) {
+    if((-1 != data->set.infilesize) &&
+       (data->set.infilesize != *ftp->bytecountp) &&
+       !data->set.crlf &&
+       !ftp->no_transfer) {
+      failf(data, "Uploaded unaligned file size (%" FORMAT_OFF_T
+            " out of %" FORMAT_OFF_T " bytes)",
+            *ftp->bytecountp, data->set.infilesize);
+      result = CURLE_PARTIAL_FILE;
+    }
+  }
+  else {
+    if((-1 != k->size) && (k->size != *ftp->bytecountp) &&
+#ifdef CURL_DO_LINEEND_CONV
+       /* Most FTP servers don't adjust their file SIZE response for CRLFs, so
+        * we'll check to see if the discrepancy can be explained by the number
+        * of CRLFs we've changed to LFs.
+        */
+       ((k->size + data->state.crlf_conversions) != *ftp->bytecountp) &&
+#endif /* CURL_DO_LINEEND_CONV */
+       (k->maxdownload != *ftp->bytecountp)) {
+      failf(data, "Received only partial file: %" FORMAT_OFF_T " bytes",
+            *ftp->bytecountp);
+      result = CURLE_PARTIAL_FILE;
     }
+    else if(!ftpc->dont_check &&
+            !*ftp->bytecountp &&
+            (k->size>0)) {
+      failf(data, "No data was received!");
+      result = CURLE_FTP_COULDNT_RETR_FILE;
+    }
+  }
 
-    /* Determine if server can respond to REST command and therefore
-       whether it can do a range */
-    FTPSENDF(conn, "REST 0", NULL);
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
+  /* clear these for next connection */
+  ftp->no_transfer = FALSE;
+  ftpc->dont_check = FALSE;
 
-    if ((CURLE_OK == result) && (ftpcode == 350)) {
-      result = Curl_client_write(data, CLIENTWRITE_BOTH,
-                                 (char *)"Accept-ranges: bytes\r\n", 0);
-      if(result)
-        return result;
-    }
+  /* Send any post-transfer QUOTE strings? */
+  if(!status && !result && !premature && data->set.postquote)
+    result = ftp_sendquote(conn, data->set.postquote);
 
-    /* If we asked for a time of the file and we actually got one as
-       well, we "emulate" a HTTP-style header in our output. */
+  return result;
+}
 
-#ifdef HAVE_STRFTIME
-    if(data->set.get_filetime && (data->info.filetime>=0) ) {
-      struct tm *tm;
-      time_t cuClock = (time_t)data->info.filetime;
-#ifdef HAVE_GMTIME_R
-      struct tm buffer;
-      tm = (struct tm *)gmtime_r(&cuClock, &buffer);
-#else
-      tm = gmtime(&cuClock);
-#endif
-      /* format: "Tue, 15 Nov 1994 12:45:26" */
-      strftime(buf, BUFSIZE-1, "Last-Modified: %a, %d %b %Y %H:%M:%S GMT\r\n",
-               tm);
-      result = Curl_client_write(data, CLIENTWRITE_BOTH, buf, 0);
-      if(result)
+/***********************************************************************
+ *
+ * ftp_sendquote()
+ *
+ * Where a 'quote' means a list of custom commands to send to the server.
+ * The quote list is passed as an argument.
+ */
+
+static
+CURLcode ftp_sendquote(struct connectdata *conn, struct curl_slist *quote)
+{
+  struct curl_slist *item;
+  ssize_t nread;
+  int ftpcode;
+  CURLcode result;
+
+  item = quote;
+  while (item) {
+    if (item->data) {
+      FTPSENDF(conn, "%s", item->data);
+
+      result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
+      if (result)
         return result;
+
+      if (ftpcode >= 400) {
+        failf(conn->data, "QUOT string not accepted: %s", item->data);
+        return CURLE_FTP_QUOTE_ERROR;
+      }
     }
-#endif
 
-    return CURLE_OK;
+    item = item->next;
   }
 
-  if(conn->bits.no_body)
-    /* doesn't really transfer any data */
-    ftp->no_transfer = TRUE;
-  /* Get us a second connection up and connected */
-  else if(data->set.ftp_use_port) {
-    /* We have chosen to use the PORT command */
-    result = ftp_use_port(conn);
-    if(CURLE_OK == result) {
-      /* we have the data connection ready */
-      infof(data, "Ordered connect of the data stream with PORT!\n");
-      *connected = TRUE; /* mark us "still connected" */
+  return CURLE_OK;
+}
+
+/***********************************************************************
+ *
+ * ftp_need_type()
+ *
+ * Returns TRUE if we in the current situation should send TYPE
+ */
+static int ftp_need_type(struct connectdata *conn,
+                         bool ascii_wanted)
+{
+  return conn->proto.ftpc.transfertype != (ascii_wanted?'A':'I');
+}
+
+/***********************************************************************
+ *
+ * ftp_nb_type()
+ *
+ * Set TYPE. We only deal with ASCII or BINARY so this function
+ * sets one of them.
+ * If the transfer type is not sent, simulate on OK response in newstate
+ */
+static CURLcode ftp_nb_type(struct connectdata *conn,
+                            bool ascii, ftpstate newstate)
+{
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  CURLcode result;
+  int want = ascii?'A':'I';
+
+  if (ftpc->transfertype == want) {
+    state(conn, newstate);
+    return ftp_state_type_resp(conn, 200, newstate);
+  }
+
+  NBFTPSENDF(conn, "TYPE %c", want);
+  state(conn, newstate);
+
+  /* keep track of our current transfer type */
+  ftpc->transfertype = want;
+  return CURLE_OK;
+}
+
+/***************************************************************************
+ *
+ * ftp_pasv_verbose()
+ *
+ * This function only outputs some informationals about this second connection
+ * when we've issued a PASV command before and thus we have connected to a
+ * possibly new IP address.
+ *
+ */
+static void
+ftp_pasv_verbose(struct connectdata *conn,
+                 Curl_addrinfo *ai,
+                 char *newhost, /* ascii version */
+                 int port)
+{
+  char buf[256];
+  Curl_printable_address(ai, buf, sizeof(buf));
+  infof(conn->data, "Connecting to %s (%s) port %d\n", newhost, buf, port);
+}
+
+/*
+  Check if this is a range download, and if so, set the internal variables
+  properly.
+ */
+
+static CURLcode ftp_range(struct connectdata *conn)
+{
+  curl_off_t from, to;
+  curl_off_t totalsize=-1;
+  char *ptr;
+  char *ptr2;
+  struct SessionHandle *data = conn->data;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+
+  if(data->reqdata.use_range && data->reqdata.range) {
+    from=curlx_strtoofft(data->reqdata.range, &ptr, 0);
+    while(ptr && *ptr && (ISSPACE(*ptr) || (*ptr=='-')))
+      ptr++;
+    to=curlx_strtoofft(ptr, &ptr2, 0);
+    if(ptr == ptr2) {
+      /* we didn't get any digit */
+      to=-1;
+    }
+    if((-1 == to) && (from>=0)) {
+      /* X - */
+      data->reqdata.resume_from = from;
+      DEBUGF(infof(conn->data, "FTP RANGE %" FORMAT_OFF_T " to end of file\n",
+                   from));
+    }
+    else if(from < 0) {
+      /* -Y */
+      totalsize = -from;
+      data->reqdata.maxdownload = -from;
+      data->reqdata.resume_from = from;
+      DEBUGF(infof(conn->data, "FTP RANGE the last %" FORMAT_OFF_T " bytes\n",
+                   totalsize));
+    }
+    else {
+      /* X-Y */
+      totalsize = to-from;
+      data->reqdata.maxdownload = totalsize+1; /* include last byte */
+      data->reqdata.resume_from = from;
+      DEBUGF(infof(conn->data, "FTP RANGE from %" FORMAT_OFF_T
+                   " getting %" FORMAT_OFF_T " bytes\n",
+                   from, data->reqdata.maxdownload));
+    }
+    DEBUGF(infof(conn->data, "range-download from %" FORMAT_OFF_T
+                 " to %" FORMAT_OFF_T ", totally %" FORMAT_OFF_T " bytes\n",
+                 from, to, data->reqdata.maxdownload));
+    ftpc->dont_check = TRUE; /* dont check for successful transfer */
+  }
+  return CURLE_OK;
+}
+
+
+/*
+ * Curl_ftp_nextconnect()
+ *
+ * This function shall be called when the second FTP (data) connection is
+ * connected.
+ */
+
+CURLcode Curl_ftp_nextconnect(struct connectdata *conn)
+{
+  struct SessionHandle *data=conn->data;
+  CURLcode result = CURLE_OK;
+
+  /* the ftp struct is inited in Curl_ftp_connect() */
+  struct FTP *ftp = data->reqdata.proto.ftp;
+
+  DEBUGF(infof(data, "DO-MORE phase starts\n"));
+
+  if(!ftp->no_transfer && !conn->bits.no_body) {
+    /* a transfer is about to take place */
+
+    if(data->set.upload) {
+      result = ftp_nb_type(conn, data->set.prefer_ascii,
+                                      FTP_STOR_TYPE);
+      if (result)
+        return result;
     }
+    else {
+      /* download */
+      ftp->downloadsize = -1; /* unknown as of yet */
+
+      result = ftp_range(conn);
+      if(result)
+        ;
+      else if((data->set.ftp_list_only) || !ftp->file) {
+        /* The specified path ends with a slash, and therefore we think this
+           is a directory that is requested, use LIST. But before that we
+           need to set ASCII transfer mode. */
+        result = ftp_nb_type(conn, 1, FTP_LIST_TYPE);
+        if (result)
+          return result;
+      }
+      else {
+        result = ftp_nb_type(conn, data->set.prefer_ascii, FTP_RETR_TYPE);
+        if (result)
+          return result;
+      }
+    }
+    result = ftp_easy_statemach(conn);
   }
+
+  if(ftp->no_transfer)
+    /* no data to transfer. FIX: it feels like a kludge to have this here
+       too! */
+    result=Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
+
+  /* end of transfer */
+  DEBUGF(infof(data, "DO-MORE phase ends with %d\n", result));
+
+  return result;
+}
+
+
+
+/***********************************************************************
+ *
+ * ftp_perform()
+ *
+ * This is the actual DO function for FTP. Get a file/directory according to
+ * the options previously setup.
+ */
+
+static
+CURLcode ftp_perform(struct connectdata *conn,
+                     bool *connected,  /* connect status after PASV / PORT */
+                     bool *dophase_done)
+{
+  /* this is FTP and no proxy */
+  CURLcode result=CURLE_OK;
+
+  DEBUGF(infof(conn->data, "DO phase starts\n"));
+
+  *dophase_done = FALSE; /* not done yet */
+
+  /* start the first command in the DO phase */
+  result = ftp_state_quote(conn, TRUE, FTP_QUOTE);
+  if(result)
+    return result;
+
+  /* run the state-machine */
+  if(conn->data->state.used_interface == Curl_if_multi)
+    result = Curl_ftp_multi_statemach(conn, dophase_done);
   else {
-    /* We have chosen (this is default) to use the PASV command */
-    result = ftp_use_pasv(conn, connected);
-    if(CURLE_OK == result && *connected)
-      infof(data, "Connected the data stream with PASV!\n");
+    result = ftp_easy_statemach(conn);
+    *dophase_done = TRUE; /* with the easy interface we are done here */
   }
+  *connected = conn->bits.tcpconnect;
+
+  if(*dophase_done)
+    DEBUGF(infof(conn->data, "DO phase is complete\n"));
 
   return result;
 }
@@ -2254,27 +3399,103 @@ CURLcode ftp_perform(struct connectdata *conn,
  *
  * The input argument is already checked for validity.
  */
-CURLcode Curl_ftp(struct connectdata *conn)
+CURLcode Curl_ftp(struct connectdata *conn, bool *done)
 {
-  CURLcode retcode;
+  CURLcode retcode = CURLE_OK;
 
-  if (conn->sec_conn) /* 3rd party transfer */
-    retcode = ftp_3rdparty(conn);
-  else
-    retcode = ftp_regular_transfer(conn);
+  *done = FALSE; /* default to false */
+
+  /*
+    Since connections can be re-used between SessionHandles, this might be a
+    connection already existing but on a fresh SessionHandle struct so we must
+    make sure we have a good 'struct FTP' to play with. For new connections,
+    the struct FTP is allocated and setup in the Curl_ftp_connect() function.
+  */
+  retcode = ftp_init(conn);
+  if(retcode)
+    return retcode;
+
+  retcode = ftp_parse_url_path(conn);
+  if (retcode)
+    return retcode;
+
+  retcode = ftp_regular_transfer(conn, done);
 
   return retcode;
 }
 
 /***********************************************************************
  *
- * Curl_ftpsendf()
+ * Curl_(nb)ftpsendf()
  *
  * Sends the formated string as a ftp command to a ftp server
  *
  * NOTE: we build the command in a fixed-length buffer, which sets length
  * restrictions on the command!
+ *
+ * The "nb" version is made to Never Block.
  */
+CURLcode Curl_nbftpsendf(struct connectdata *conn,
+                       const char *fmt, ...)
+{
+  ssize_t bytes_written;
+  char s[256];
+  size_t write_len;
+  char *sptr=s;
+  CURLcode res = CURLE_OK;
+  struct SessionHandle *data = conn->data;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+
+  va_list ap;
+  va_start(ap, fmt);
+  vsnprintf(s, 250, fmt, ap);
+  va_end(ap);
+
+  strcat(s, "\r\n"); /* append a trailing CRLF */
+
+  bytes_written=0;
+  write_len = strlen(s);
+
+  ftp_respinit(conn);
+
+#ifdef CURL_DOES_CONVERSIONS
+  res = Curl_convert_to_network(data, s, write_len);
+  /* Curl_convert_to_network calls failf if unsuccessful */
+  if(res != CURLE_OK) {
+    return res;
+  }
+#endif /* CURL_DOES_CONVERSIONS */
+
+  res = Curl_write(conn, conn->sock[FIRSTSOCKET], sptr, write_len,
+                   &bytes_written);
+
+  if(CURLE_OK != res)
+    return res;
+
+  if(conn->data->set.verbose)
+    Curl_debug(conn->data, CURLINFO_HEADER_OUT,
+               sptr, (size_t)bytes_written, conn);
+
+  if(bytes_written != (ssize_t)write_len) {
+    /* the whole chunk was not sent, store the rest of the data */
+    write_len -= bytes_written;
+    sptr += bytes_written;
+    ftpc->sendthis = malloc(write_len);
+    if(ftpc->sendthis) {
+      memcpy(ftpc->sendthis, sptr, write_len);
+      ftpc->sendsize = ftpc->sendleft = write_len;
+    }
+    else {
+      failf(data, "out of memory");
+      res = CURLE_OUT_OF_MEMORY;
+    }
+  }
+  else
+    ftpc->response = Curl_tvnow();
+
+  return res;
+}
+
 CURLcode Curl_ftpsendf(struct connectdata *conn,
                        const char *fmt, ...)
 {
@@ -2282,7 +3503,7 @@ CURLcode Curl_ftpsendf(struct connectdata *conn,
   char s[256];
   size_t write_len;
   char *sptr=s;
-  CURLcode res;
+  CURLcode res = CURLE_OK;
 
   va_list ap;
   va_start(ap, fmt);
@@ -2294,6 +3515,14 @@ CURLcode Curl_ftpsendf(struct connectdata *conn,
   bytes_written=0;
   write_len = strlen(s);
 
+#ifdef CURL_DOES_CONVERSIONS
+  res = Curl_convert_to_network(conn->data, s, write_len);
+  /* Curl_convert_to_network calls failf if unsuccessful */
+  if(res != CURLE_OK) {
+    return(res);
+  }
+#endif /* CURL_DOES_CONVERSIONS */
+
   while(1) {
     res = Curl_write(conn, conn->sock[FIRSTSOCKET], sptr, write_len,
                      &bytes_written);
@@ -2302,7 +3531,8 @@ CURLcode Curl_ftpsendf(struct connectdata *conn,
       break;
 
     if(conn->data->set.verbose)
-      Curl_debug(conn->data, CURLINFO_HEADER_OUT, sptr, bytes_written, conn->host.dispname);
+      Curl_debug(conn->data, CURLINFO_HEADER_OUT,
+                 sptr, (size_t)bytes_written, conn);
 
     if(bytes_written != (ssize_t)write_len) {
       write_len -= bytes_written;
@@ -2327,17 +3557,16 @@ CURLcode Curl_ftpsendf(struct connectdata *conn,
  */
 static CURLcode ftp_quit(struct connectdata *conn)
 {
-  ssize_t nread;
-  int ftpcode;
-  CURLcode ret = CURLE_OK;
+  CURLcode result = CURLE_OK;
 
-  if(conn->proto.ftp->ctl_valid) {
-    ret = Curl_ftpsendf(conn, "%s", "QUIT");
-    if(CURLE_OK == ret)
-      ret = Curl_GetFTPResponse(&nread, conn, &ftpcode);
+  if(conn->proto.ftpc.ctl_valid) {
+    NBFTPSENDF(conn, "QUIT", NULL);
+    state(conn, FTP_QUIT);
+
+    result = ftp_easy_statemach(conn);
   }
 
-  return ret;
+  return result;
 }
 
 /***********************************************************************
@@ -2345,11 +3574,11 @@ static CURLcode ftp_quit(struct connectdata *conn)
  * Curl_ftp_disconnect()
  *
  * Disconnect from an FTP server. Cleanup protocol-specific per-connection
- * resources
+ * resources. BLOCKING.
  */
 CURLcode Curl_ftp_disconnect(struct connectdata *conn)
 {
-  struct FTP *ftp= conn->proto.ftp;
+  struct ftp_conn *ftpc= &conn->proto.ftpc;
 
   /* We cannot send quit unconditionally. If this connection is stale or
      bad in any way, sending quit and waiting around here will make the
@@ -2360,415 +3589,276 @@ CURLcode Curl_ftp_disconnect(struct connectdata *conn)
   */
 
   /* The FTP session may or may not have been allocated/setup at this point! */
-  if(ftp) {
+  if(conn->data->reqdata.proto.ftp) {
     (void)ftp_quit(conn); /* ignore errors on the QUIT */
 
-    if(ftp->entrypath)
-      free(ftp->entrypath);
-    if(ftp->cache) {
-      free(ftp->cache);
-      ftp->cache = NULL;
+    if(ftpc->entrypath) {
+      struct SessionHandle *data = conn->data;
+      data->state.most_recent_ftp_entrypath = NULL;
+      free(ftpc->entrypath);
+      ftpc->entrypath = NULL;
+    }
+    if(ftpc->cache) {
+      free(ftpc->cache);
+      ftpc->cache = NULL;
+    }
+    freedirs(conn);
+    if(ftpc->prevpath) {
+      free(ftpc->prevpath);
+      ftpc->prevpath = NULL;
     }
-    freedirs(ftp);
   }
   return CURLE_OK;
 }
 
 /***********************************************************************
  *
- * ftp_mkd()
+ * ftp_parse_url_path()
  *
- * Makes a directory on the FTP server.
+ * Parse the URL path into separate path components.
  *
- * Calls failf()
  */
-static CURLcode ftp_mkd(struct connectdata *conn, char *path)
+static
+CURLcode ftp_parse_url_path(struct connectdata *conn)
 {
-  CURLcode result;
-  int ftpcode; /* for ftp status */
-  ssize_t nread;
+  CURLcode retcode = CURLE_OK;
+  struct SessionHandle *data = conn->data;
+  /* the ftp struct is already inited in ftp_connect() */
+  struct FTP *ftp = data->reqdata.proto.ftp;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  size_t dlen;
+  char *slash_pos;  /* position of the first '/' char in curpos */
+  char *path_to_use = data->reqdata.path;
+  char *cur_pos;
 
-  /* Create a directory on the remote server */
-  FTPSENDF(conn, "MKD %s", path);
+  cur_pos = path_to_use; /* current position in path. point at the begin
+                            of next path component */
 
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if(result)
-    return result;
+  ftpc->ctl_valid = FALSE;
+  ftpc->cwdfail = FALSE;
 
-  switch(ftpcode) {
-  case 257:
-    /* success! */
-    infof( conn->data , "Created remote directory %s\n" , path );
-    break;
-  case 550:
-    failf(conn->data, "Permission denied to make directory %s", path);
-    result = CURLE_FTP_ACCESS_DENIED;
-    break;
-  default:
-    failf(conn->data, "unrecognized MKD response: %d", ftpcode );
-    result = CURLE_FTP_ACCESS_DENIED;
+  switch(data->set.ftp_filemethod) {
+  case FTPFILE_NOCWD:
+    /* fastest, but less standard-compliant */
+    ftp->file = data->reqdata.path;  /* this is a full file path */
     break;
-  }
-  return  result;
-}
 
-/***********************************************************************
- *
- * ftp_cwd()
- *
- * Send 'CWD' to the remote server to Change Working Directory.  It is the ftp
- * version of the unix 'cd' command. This function is only called from the
- * ftp_cwd_and_mkd() function these days.
- *
- * This function does NOT call failf().
- */
-static
-CURLcode ftp_cwd(struct connectdata *conn, char *path)
-{
-  ssize_t nread;
-  int     ftpcode;
-  CURLcode result;
+  case FTPFILE_SINGLECWD:
+    /* get the last slash */
+    slash_pos=strrchr(cur_pos, '/');
+    if(slash_pos || !cur_pos || !*cur_pos) {
+      ftpc->dirdepth = 1; /* we consider it to be a single dir */
+      ftpc->dirs = (char **)calloc(1, sizeof(ftpc->dirs[0]));
+      if(!ftpc->dirs)
+        return CURLE_OUT_OF_MEMORY;
 
-  FTPSENDF(conn, "CWD %s", path);
-  result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-  if (!result) {
-    /* According to RFC959, CWD is supposed to return 250 on success, but
-       there seem to be non-compliant FTP servers out there that return 200,
-       so we accept any '2xy' code here. */
-    if (ftpcode/100 != 2)
-      result = CURLE_FTP_ACCESS_DENIED;
-  }
+      ftpc->dirs[0] = curl_easy_unescape(conn->data, slash_pos ? cur_pos : "/",
+                                         slash_pos?(int)(slash_pos-cur_pos):1,
+                                         NULL);
+      if(!ftpc->dirs[0]) {
+        free(ftpc->dirs);
+        return CURLE_OUT_OF_MEMORY;
+      }
+      ftp->file = slash_pos ? slash_pos+1 : cur_pos; /* rest is file name */
+    }
+    else
+      ftp->file = cur_pos;  /* this is a file name only */
+    break;
 
-  return result;
-}
+  default: /* allow pretty much anything */
+  case FTPFILE_MULTICWD:
+    ftpc->dirdepth = 0;
+    ftpc->diralloc = 5; /* default dir depth to allocate */
+    ftpc->dirs = (char **)calloc(ftpc->diralloc, sizeof(ftpc->dirs[0]));
+    if(!ftpc->dirs)
+      return CURLE_OUT_OF_MEMORY;
 
-/***********************************************************************
- *
- * ftp_cwd_and_mkd()
- *
- * Change to the given directory.  If the directory is not present, and we
- * have been told to allow it, then create the directory and cd to it.
- *
- */
-static CURLcode ftp_cwd_and_mkd(struct connectdata *conn, char *path)
-{
-  CURLcode result;
+    /* parse the URL path into separate path components */
+    while ((slash_pos = strchr(cur_pos, '/')) != NULL) {
+      /* 1 or 0 to indicate absolute directory */
+      bool absolute_dir = (bool)((cur_pos - data->reqdata.path > 0) &&
+        (ftpc->dirdepth == 0));
+
+      /* seek out the next path component */
+      if (slash_pos-cur_pos) {
+        /* we skip empty path components, like "x//y" since the FTP command
+           CWD requires a parameter and a non-existant parameter a) doesn't
+           work on many servers and b) has no effect on the others. */
+        int len = (int)(slash_pos - cur_pos + absolute_dir);
+        ftpc->dirs[ftpc->dirdepth] = curl_easy_unescape(conn->data,
+                                                        cur_pos - absolute_dir,
+                                                        len, NULL);
+        if (!ftpc->dirs[ftpc->dirdepth]) { /* run out of memory ... */
+          failf(data, "no memory");
+          freedirs(conn);
+          return CURLE_OUT_OF_MEMORY;
+        }
+        if (isBadFtpString(ftpc->dirs[ftpc->dirdepth])) {
+          freedirs(conn);
+          return CURLE_URL_MALFORMAT;
+        }
+      }
+      else {
+        cur_pos = slash_pos + 1; /* jump to the rest of the string */
+        continue;
+      }
 
-  result = ftp_cwd(conn, path);
-  if (result) {
-    if(conn->data->set.ftp_create_missing_dirs) {
-      result = ftp_mkd(conn, path);
-      if (result)
-        /* ftp_mkd() calls failf() itself */
-        return result;
-      result = ftp_cwd(conn, path);
+      if(!retcode) {
+        cur_pos = slash_pos + 1; /* jump to the rest of the string */
+        if(++ftpc->dirdepth >= ftpc->diralloc) {
+          /* enlarge array */
+          char *bigger;
+          ftpc->diralloc *= 2; /* double the size each time */
+          bigger = realloc(ftpc->dirs, ftpc->diralloc * sizeof(ftpc->dirs[0]));
+          if(!bigger) {
+            ftpc->dirdepth--;
+            freedirs(conn);
+            return CURLE_OUT_OF_MEMORY;
+          }
+          ftpc->dirs = (char **)bigger;
+        }
+      }
     }
-    if(result)
-      failf(conn->data, "Couldn't cd to %s", path);
+
+    ftp->file = cur_pos;  /* the rest is the file name */
   }
-  return result;
-}
 
+  if(*ftp->file) {
+    ftp->file = curl_easy_unescape(conn->data, ftp->file, 0, NULL);
+    if(NULL == ftp->file) {
+      freedirs(conn);
+      failf(data, "no memory");
+      return CURLE_OUT_OF_MEMORY;
+    }
+    if (isBadFtpString(ftp->file)) {
+      freedirs(conn);
+      return CURLE_URL_MALFORMAT;
+    }
+  }
+  else
+    ftp->file=NULL; /* instead of point to a zero byte, we make it a NULL
+                       pointer */
 
+  if(data->set.upload && !ftp->file &&
+     (!ftp->no_transfer || conn->bits.no_body)) {
+    /* We need a file name when uploading. Return error! */
+    failf(data, "Uploading to a URL without a file name!");
+    return CURLE_URL_MALFORMAT;
+  }
 
-/***********************************************************************
- *
- * ftp_3rdparty_pretransfer()
- *
- * Preparation for 3rd party transfer.
- *
- */
-static CURLcode ftp_3rdparty_pretransfer(struct connectdata *conn)
-{
-  CURLcode result;
-  struct SessionHandle *data = conn->data;
-  struct connectdata *sec_conn = conn->sec_conn;
+  ftpc->cwddone = FALSE; /* default to not done */
 
-  /* sets transfer type */
-  result = ftp_transfertype(conn, data->set.ftp_ascii);
-  if (result)
-    return result;
-
-  result = ftp_transfertype(sec_conn, data->set.ftp_ascii);
-  if (result)
-    return result;
+  if(ftpc->prevpath) {
+    /* prevpath is "raw" so we convert the input path before we compare the
+       strings */
+    char *path = curl_easy_unescape(conn->data, data->reqdata.path, 0, NULL);
+    if(!path)
+      return CURLE_OUT_OF_MEMORY;
 
-  /* Send any PREQUOTE strings after transfer type is set? */
-  if (data->set.source_prequote) {
-    /* sends command(s) to source server before file transfer */
-    result = ftp_sendquote(sec_conn, data->set.source_prequote);
+    dlen = strlen(path) - (ftp->file?strlen(ftp->file):0);
+    if((dlen == strlen(ftpc->prevpath)) &&
+       curl_strnequal(path, ftpc->prevpath, dlen)) {
+      infof(data, "Request has same path as previous transfer\n");
+      ftpc->cwddone = TRUE;
+    }
+    free(path);
   }
-  if (!result && data->set.prequote)
-    result = ftp_sendquote(conn, data->set.prequote);
 
-  return result;
+  return retcode;
 }
 
-
-
-/***********************************************************************
- *
- * ftp_3rdparty_transfer()
- *
- * Performs 3rd party transfer.
- *
- */
-static CURLcode ftp_3rdparty_transfer(struct connectdata *conn)
+/* call this when the DO phase has completed */
+static CURLcode ftp_dophase_done(struct connectdata *conn,
+                                 bool connected)
 {
-  CURLcode result;
-  ssize_t nread;
-  int ftpcode, ip[4], port[2];
-  struct SessionHandle *data = conn->data;
-  struct connectdata *sec_conn = conn->sec_conn;
-  char *buf = data->state.buffer;   /* this is our buffer */
-  char *str = buf;
-  char pasv_port[50];
-  const char *stor_cmd;
-  struct connectdata *pasv_conn;
-  struct connectdata *port_conn;
-
-  if (data->set.pasvHost == CURL_TARGET_PASV) {
-    pasv_conn = conn;
-    port_conn = sec_conn;
-  }
-  else {
-    pasv_conn = sec_conn;
-    port_conn = conn;
-  }
-
-  /* sets the passive mode */
-  FTPSENDF(pasv_conn, "%s", "PASV");
-  result = Curl_GetFTPResponse(&nread, pasv_conn, &ftpcode);
-  if (result) return result;
-  if (ftpcode != 227) {
-    failf(data, "Odd return code after PASV:%s", buf + 3);
-    return CURLE_FTP_WEIRD_PASV_REPLY;
-  }
-
-  while (*str) {
-    if (6 == sscanf(str, "%d,%d,%d,%d,%d,%d",
-                    &ip[0], &ip[1], &ip[2], &ip[3], &port[0], &port[1]))
-      break;
-    str++;
-  }
-
-  if (!*str) {
-    failf(pasv_conn->data, "Couldn't interpret this 227-reply: %s", buf);
-    return CURLE_FTP_WEIRD_227_FORMAT;
-  }
+  CURLcode result = CURLE_OK;
+  struct FTP *ftp = conn->data->reqdata.proto.ftp;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
 
-  snprintf(pasv_port, sizeof(pasv_port), "%d,%d,%d,%d,%d,%d", ip[0], ip[1],
-           ip[2], ip[3], port[0], port[1]);
+  if(connected)
+    result = Curl_ftp_nextconnect(conn);
 
-  /* sets data connection between remote hosts */
-  FTPSENDF(port_conn, "PORT %s", pasv_port);
-  result = Curl_GetFTPResponse(&nread, port_conn, &ftpcode);
-  if (result)
+  if(result && (conn->sock[SECONDARYSOCKET] != CURL_SOCKET_BAD)) {
+    /* Failure detected, close the second socket if it was created already */
+    sclose(conn->sock[SECONDARYSOCKET]);
+    conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
     return result;
-
-  if (ftpcode != 200) {
-    failf(data, "PORT command attempts failed:%s", buf + 3);
-    return CURLE_FTP_PORT_FAILED;
   }
 
-  /* we might append onto the file instead of overwriting it */
-  stor_cmd = data->set.ftp_append?"APPE":"STOR";
-
-  /* transfers file between remote hosts */
-  FTPSENDF(sec_conn, "RETR %s", data->set.source_path);
-
-  if(data->set.pasvHost == CURL_TARGET_PASV) {
-
-    result = Curl_GetFTPResponse(&nread, sec_conn, &ftpcode);
-    if (result)
-      return result;
-
-    if (ftpcode != 150) {
-      failf(data, "Failed RETR: %s", buf + 4);
-      return CURLE_FTP_COULDNT_RETR_FILE;
-    }
-
-    result = Curl_ftpsendf(conn, "%s %s", stor_cmd, conn->path);
-    if(CURLE_OK == result)
-      result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-    if (result)
-      return result;
-
-    if (ftpcode != 150) {
-      failf(data, "Failed FTP upload: %s", buf + 4);
-      return CURLE_FTP_COULDNT_STOR_FILE;
-    }
+  if(ftp->no_transfer)
+    /* no data to transfer */
+    result=Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
+  else if(!connected)
+    /* since we didn't connect now, we want do_more to get called */
+    conn->bits.do_more = TRUE;
 
-  }
-  else {
+  ftpc->ctl_valid = TRUE; /* seems good */
 
-    result = Curl_ftpsendf(conn, "%s %s", stor_cmd, conn->path);
-    if(CURLE_OK == result)
-      result = Curl_GetFTPResponse(&nread, sec_conn, &ftpcode);
-    if (result)
-      return result;
+  return result;
+}
 
-    if (ftpcode != 150) {
-      failf(data, "Failed FTP upload: %s", buf + 4);
-      return CURLE_FTP_COULDNT_STOR_FILE;
-    }
+/* called from multi.c while DOing */
+CURLcode Curl_ftp_doing(struct connectdata *conn,
+                        bool *dophase_done)
+{
+  CURLcode result;
+  result = Curl_ftp_multi_statemach(conn, dophase_done);
 
-    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-    if (result)
-      return result;
+  if(*dophase_done) {
+    result = ftp_dophase_done(conn, FALSE /* not connected */);
 
-    if (ftpcode != 150) {
-      failf(data, "Failed FTP upload: %s", buf + 4);
-      return CURLE_FTP_COULDNT_STOR_FILE;
-    }
+    DEBUGF(infof(conn->data, "DO phase is complete\n"));
   }
-
-  return CURLE_OK;
+  return result;
 }
 
-
-
 /***********************************************************************
  *
  * ftp_regular_transfer()
  *
  * The input argument is already checked for validity.
- * Performs a regular transfer between local and remote hosts.
+ *
+ * Performs all commands done before a regular transfer between a local and a
+ * remote host.
  *
  * ftp->ctl_valid starts out as FALSE, and gets set to TRUE if we reach the
  * Curl_ftp_done() function without finding any major problem.
  */
 static
-CURLcode ftp_regular_transfer(struct connectdata *conn)
+CURLcode ftp_regular_transfer(struct connectdata *conn,
+                              bool *dophase_done)
 {
-  CURLcode retcode=CURLE_OK;
+  CURLcode result=CURLE_OK;
   bool connected=0;
   struct SessionHandle *data = conn->data;
-  struct FTP *ftp;
-
-  char *slash_pos;  /* position of the first '/' char in curpos */
-  char *cur_pos=conn->path; /* current position in ppath. point at the begin
-                               of next path component */
-
-  /* the ftp struct is already inited in ftp_connect() */
-  ftp = conn->proto.ftp;
-  ftp->ctl_valid = FALSE;
-  conn->size = -1; /* make sure this is unknown at this point */
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
+  data->reqdata.size = -1; /* make sure this is unknown at this point */
 
   Curl_pgrsSetUploadCounter(data, 0);
   Curl_pgrsSetDownloadCounter(data, 0);
   Curl_pgrsSetUploadSize(data, 0);
   Curl_pgrsSetDownloadSize(data, 0);
 
-  ftp->dirdepth = 0;
-  ftp->diralloc = 5; /* default dir depth to allocate */
-  ftp->dirs = (char **)malloc(ftp->diralloc * sizeof(ftp->dirs[0]));
-  if(!ftp->dirs)
-    return CURLE_OUT_OF_MEMORY;
-  ftp->dirs[0] = NULL; /* to start with */
-
-  /* parse the URL path into separate path components */
-  while((slash_pos=strchr(cur_pos, '/'))) {
-    /* 1 or 0 to indicate absolute directory */
-    bool absolute_dir = (cur_pos - conn->path > 0) && (ftp->dirdepth == 0);
-
-    /* seek out the next path component */
-    if (slash_pos-cur_pos) {
-      /* we skip empty path components, like "x//y" since the FTP command CWD
-         requires a parameter and a non-existant parameter a) doesn't work on
-         many servers and b) has no effect on the others. */
-      int len = (int)(slash_pos - cur_pos + absolute_dir);
-      ftp->dirs[ftp->dirdepth] = curl_unescape(cur_pos - absolute_dir, len);
-
-      if (!ftp->dirs[ftp->dirdepth]) { /* run out of memory ... */
-        failf(data, "no memory");
-        freedirs(ftp);
-        return CURLE_OUT_OF_MEMORY;
-      }
-    }
-    else {
-      cur_pos = slash_pos + 1; /* jump to the rest of the string */
-      continue;
-    }
+  ftpc->ctl_valid = TRUE; /* starts good */
 
-    if(!retcode) {
-      cur_pos = slash_pos + 1; /* jump to the rest of the string */
-      if(++ftp->dirdepth >= ftp->diralloc) {
-        /* enlarge array */
-        char **bigger;
-        ftp->diralloc *= 2; /* double the size each time */
-        bigger = realloc(ftp->dirs, ftp->diralloc * sizeof(ftp->dirs[0]));
-        if(!bigger) {
-          freedirs(ftp);
-          return CURLE_OUT_OF_MEMORY;
-        }
-        ftp->dirs = (char **)bigger;
-      }
-    }
-  }
+  result = ftp_perform(conn,
+                       &connected, /* have we connected after PASV/PORT */
+                       dophase_done); /* all commands in the DO-phase done? */
 
-  ftp->file = cur_pos;  /* the rest is the file name */
+  if(CURLE_OK == result) {
 
-  if(*ftp->file) {
-    ftp->file = curl_unescape(ftp->file, 0);
-    if(NULL == ftp->file) {
-      freedirs(ftp);
-      failf(data, "no memory");
-      return CURLE_OUT_OF_MEMORY;
-    }
-  }
-  else
-    ftp->file=NULL; /* instead of point to a zero byte, we make it a NULL
-                       pointer */
-
-  retcode = ftp_perform(conn, &connected);
-
-  if(CURLE_OK == retcode) {
-    if(connected)
-      retcode = Curl_ftp_nextconnect(conn);
-
-    if(retcode && (conn->sock[SECONDARYSOCKET] != CURL_SOCKET_BAD)) {
-      /* Failure detected, close the second socket if it was created already */
-      sclose(conn->sock[SECONDARYSOCKET]);
-      conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
-    }
+    if(!*dophase_done)
+      /* the DO phase has not completed yet */
+      return CURLE_OK;
 
-    if(ftp->no_transfer)
-      /* no data to transfer */
-      retcode=Curl_Transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
-    else if(!connected)
-      /* since we didn't connect now, we want do_more to get called */
-      conn->bits.do_more = TRUE;
+    result = ftp_dophase_done(conn, connected);
+    if(result)
+      return result;
   }
   else
-    freedirs(ftp);
-
-  ftp->ctl_valid = TRUE; /* seems good */
-
-  return retcode;
-}
-
-
-
-/***********************************************************************
- *
- * ftp_3rdparty()
- *
- * The input argument is already checked for validity.
- * Performs a 3rd party transfer between two remote hosts.
- */
-static CURLcode ftp_3rdparty(struct connectdata *conn)
-{
-  CURLcode retcode;
-
-  conn->proto.ftp->ctl_valid = conn->sec_conn->proto.ftp->ctl_valid = TRUE;
-  conn->size = conn->sec_conn->size = -1;
+    freedirs(conn);
 
-  retcode = ftp_3rdparty_pretransfer(conn);
-  if (!retcode)
-    retcode = ftp_3rdparty_transfer(conn);
-
-  return retcode;
+  return result;
 }
 
 #endif /* CURL_DISABLE_FTP */