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-rw-r--r--Utilities/cmcurl/sendf.c496
1 files changed, 496 insertions, 0 deletions
diff --git a/Utilities/cmcurl/sendf.c b/Utilities/cmcurl/sendf.c
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+++ b/Utilities/cmcurl/sendf.c
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+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2004, 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
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * $Id$
+ ***************************************************************************/
+
+#include "setup.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h> /* required for send() & recv() prototypes */
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <curl/curl.h>
+#include "urldata.h"
+#include "sendf.h"
+#include "connect.h" /* for the Curl_ourerrno() proto */
+
+#define _MPRINTF_REPLACE /* use the internal *printf() functions */
+#include <curl/mprintf.h>
+
+#ifdef HAVE_KRB4
+#include "security.h"
+#endif
+#include <string.h>
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+/* returns last node in linked list */
+static struct curl_slist *slist_get_last(struct curl_slist *list)
+{
+ struct curl_slist *item;
+
+ /* if caller passed us a NULL, return now */
+ if (!list)
+ return NULL;
+
+ /* loop through to find the last item */
+ item = list;
+ while (item->next) {
+ item = item->next;
+ }
+ return item;
+}
+
+/*
+ * curl_slist_append() appends a string to the linked list. It always retunrs
+ * the address of the first record, so that you can sure this function as an
+ * initialization function as well as an append function. If you find this
+ * bothersome, then simply create a separate _init function and call it
+ * appropriately from within the proram.
+ */
+struct curl_slist *curl_slist_append(struct curl_slist *list,
+ const char *data)
+{
+ struct curl_slist *last;
+ struct curl_slist *new_item;
+
+ new_item = (struct curl_slist *) malloc(sizeof(struct curl_slist));
+ if (new_item) {
+ char *cuDup = strdup(data);
+ if(cuDup) {
+ new_item->next = NULL;
+ new_item->data = cuDup;
+ }
+ else {
+ free(new_item);
+ return NULL;
+ }
+ }
+ else
+ return NULL;
+
+ if (list) {
+ last = slist_get_last(list);
+ last->next = new_item;
+ return list;
+ }
+
+ /* if this is the first item, then new_item *is* the list */
+ return new_item;
+}
+
+/* be nice and clean up resources */
+void curl_slist_free_all(struct curl_slist *list)
+{
+ struct curl_slist *next;
+ struct curl_slist *item;
+
+ if (!list)
+ return;
+
+ item = list;
+ do {
+ next = item->next;
+
+ if (item->data) {
+ free(item->data);
+ }
+ free(item);
+ item = next;
+ } while (next);
+}
+
+/* Curl_infof() is for info message along the way */
+
+void Curl_infof(struct SessionHandle *data, const char *fmt, ...)
+{
+ if(data && data->set.verbose) {
+ va_list ap;
+ char print_buffer[1024 + 1];
+ va_start(ap, fmt);
+ vsnprintf(print_buffer, 1024, fmt, ap);
+ va_end(ap);
+ Curl_debug(data, CURLINFO_TEXT, print_buffer, strlen(print_buffer), NULL);
+ }
+}
+
+/* Curl_failf() is for messages stating why we failed.
+ * The message SHALL NOT include any LF or CR.
+ */
+
+void Curl_failf(struct SessionHandle *data, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ if(data->set.errorbuffer && !data->state.errorbuf) {
+ vsnprintf(data->set.errorbuffer, CURL_ERROR_SIZE, fmt, ap);
+ data->state.errorbuf = TRUE; /* wrote error string */
+
+ if(data->set.verbose) {
+ size_t len = strlen(data->set.errorbuffer);
+ bool doneit=FALSE;
+ if(len < CURL_ERROR_SIZE - 1) {
+ doneit = TRUE;
+ data->set.errorbuffer[len] = '\n';
+ data->set.errorbuffer[++len] = '\0';
+ }
+ Curl_debug(data, CURLINFO_TEXT, data->set.errorbuffer, len, NULL);
+ if(doneit)
+ /* cut off the newline again */
+ data->set.errorbuffer[--len]=0;
+ }
+ }
+ va_end(ap);
+}
+
+/* Curl_sendf() sends formated data to the server */
+CURLcode Curl_sendf(curl_socket_t sockfd, struct connectdata *conn,
+ const char *fmt, ...)
+{
+ struct SessionHandle *data = conn->data;
+ ssize_t bytes_written;
+ size_t write_len;
+ CURLcode res;
+ char *s;
+ char *sptr;
+ va_list ap;
+ va_start(ap, fmt);
+ s = vaprintf(fmt, ap); /* returns an allocated string */
+ va_end(ap);
+ if(!s)
+ return CURLE_OUT_OF_MEMORY; /* failure */
+
+ bytes_written=0;
+ write_len = strlen(s);
+ sptr = s;
+
+ while (1) {
+ /* Write the buffer to the socket */
+ res = Curl_write(conn, sockfd, sptr, write_len, &bytes_written);
+
+ if(CURLE_OK != res)
+ break;
+
+ if(data->set.verbose)
+ Curl_debug(data, CURLINFO_DATA_OUT, sptr, bytes_written,
+ conn->host.dispname);
+
+ if((size_t)bytes_written != write_len) {
+ /* if not all was written at once, we must advance the pointer, decrease
+ the size left and try again! */
+ write_len -= bytes_written;
+ sptr += bytes_written;
+ }
+ else
+ break;
+ }
+
+ free(s); /* free the output string */
+
+ return res;
+}
+
+/*
+ * Curl_write() is an internal write function that sends plain (binary) data
+ * to the server. Works with plain sockets, SSL or kerberos.
+ */
+CURLcode Curl_write(struct connectdata *conn,
+ curl_socket_t sockfd,
+ void *mem,
+ size_t len,
+ ssize_t *written)
+{
+ ssize_t bytes_written;
+ CURLcode retcode;
+
+#ifdef USE_SSLEAY
+ /* Set 'num' to 0 or 1, depending on which socket that has been sent here.
+ If it is the second socket, we set num to 1. Otherwise to 0. This lets
+ us use the correct ssl handle. */
+ int num = (sockfd == conn->sock[SECONDARYSOCKET]);
+ /* SSL_write() is said to return 'int' while write() and send() returns
+ 'size_t' */
+ if (conn->ssl[num].use) {
+ int err;
+ char error_buffer[120]; /* OpenSSL documents that this must be at least
+ 120 bytes long. */
+ unsigned long sslerror;
+ int rc = SSL_write(conn->ssl[num].handle, mem, (int)len);
+
+ if(rc < 0) {
+ err = SSL_get_error(conn->ssl[num].handle, rc);
+
+ switch(err) {
+ case SSL_ERROR_WANT_READ:
+ case SSL_ERROR_WANT_WRITE:
+ /* The operation did not complete; the same TLS/SSL I/O function
+ should be called again later. This is basicly an EWOULDBLOCK
+ equivalent. */
+ *written = 0;
+ return CURLE_OK;
+ case SSL_ERROR_SYSCALL:
+ failf(conn->data, "SSL_write() returned SYSCALL, errno = %d\n",
+ Curl_ourerrno());
+ return CURLE_SEND_ERROR;
+ case SSL_ERROR_SSL:
+ /* A failure in the SSL library occurred, usually a protocol error.
+ The OpenSSL error queue contains more information on the error. */
+ sslerror = ERR_get_error();
+ failf(conn->data, "SSL_write() error: %s\n",
+ ERR_error_string(sslerror, error_buffer));
+ return CURLE_SEND_ERROR;
+ }
+ /* a true error */
+ failf(conn->data, "SSL_write() return error %d\n", err);
+ return CURLE_SEND_ERROR;
+ }
+ bytes_written = rc;
+ }
+ else {
+#else
+ (void)conn;
+#endif
+#ifdef HAVE_KRB4
+ if(conn->sec_complete) {
+ bytes_written = Curl_sec_write(conn, sockfd, mem, len);
+ }
+ else
+#endif /* HAVE_KRB4 */
+ {
+ bytes_written = (ssize_t)swrite(sockfd, mem, len);
+ }
+ if(-1 == bytes_written) {
+ int err = Curl_ourerrno();
+
+ if(
+#ifdef WSAEWOULDBLOCK
+ /* This is how Windows does it */
+ (WSAEWOULDBLOCK == err)
+#else
+ /* As pointed out by Christophe Demory on March 11 2003, errno
+ may be EWOULDBLOCK or on some systems EAGAIN when it returned
+ due to its inability to send off data without blocking. We
+ therefor treat both error codes the same here */
+ (EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err)
+#endif
+ )
+ /* this is just a case of EWOULDBLOCK */
+ bytes_written=0;
+ }
+#ifdef USE_SSLEAY
+ }
+#endif
+
+ *written = bytes_written;
+ retcode = (-1 != bytes_written)?CURLE_OK:CURLE_SEND_ERROR;
+
+ return retcode;
+}
+
+/* client_write() sends data to the write callback(s)
+
+ The bit pattern defines to what "streams" to write to. Body and/or header.
+ The defines are in sendf.h of course.
+ */
+CURLcode Curl_client_write(struct SessionHandle *data,
+ int type,
+ char *ptr,
+ size_t len)
+{
+ size_t wrote;
+
+ if(0 == len)
+ len = strlen(ptr);
+
+ if(type & CLIENTWRITE_BODY) {
+ wrote = data->set.fwrite(ptr, 1, len, data->set.out);
+ if(wrote != len) {
+ failf (data, "Failed writing body");
+ return CURLE_WRITE_ERROR;
+ }
+ }
+ if((type & CLIENTWRITE_HEADER) &&
+ (data->set.fwrite_header || data->set.writeheader) ) {
+ /*
+ * Write headers to the same callback or to the especially setup
+ * header callback function (added after version 7.7.1).
+ */
+ curl_write_callback writeit=
+ data->set.fwrite_header?data->set.fwrite_header:data->set.fwrite;
+
+ wrote = writeit(ptr, 1, len, data->set.writeheader);
+ if(wrote != len) {
+ failf (data, "Failed writing header");
+ return CURLE_WRITE_ERROR;
+ }
+ }
+
+ return CURLE_OK;
+}
+
+/*
+ * Internal read-from-socket function. This is meant to deal with plain
+ * sockets, SSL sockets and kerberos sockets.
+ *
+ * If the read would block (EWOULDBLOCK) we return -1. Otherwise we return
+ * a regular CURLcode value.
+ */
+int Curl_read(struct connectdata *conn, /* connection data */
+ curl_socket_t sockfd, /* read from this socket */
+ char *buf, /* store read data here */
+ size_t buffersize, /* max amount to read */
+ ssize_t *n) /* amount bytes read */
+{
+ ssize_t nread;
+#ifdef USE_SSLEAY
+ /* Set 'num' to 0 or 1, depending on which socket that has been sent here.
+ If it is the second socket, we set num to 1. Otherwise to 0. This lets
+ us use the correct ssl handle. */
+ int num = (sockfd == conn->sock[SECONDARYSOCKET]);
+
+ *n=0; /* reset amount to zero */
+
+ if (conn->ssl[num].use) {
+ nread = (ssize_t)SSL_read(conn->ssl[num].handle, buf, (int)buffersize);
+
+ if(nread < 0) {
+ /* failed SSL_read */
+ int err = SSL_get_error(conn->ssl[num].handle, (int)nread);
+
+ switch(err) {
+ case SSL_ERROR_NONE: /* this is not an error */
+ case SSL_ERROR_ZERO_RETURN: /* no more data */
+ break;
+ case SSL_ERROR_WANT_READ:
+ case SSL_ERROR_WANT_WRITE:
+ /* there's data pending, re-invoke SSL_read() */
+ return -1; /* basicly EWOULDBLOCK */
+ default:
+ /* openssl/ssl.h says "look at error stack/return value/errno" */
+ {
+ char error_buffer[120]; /* OpenSSL documents that this must be at
+ least 120 bytes long. */
+ unsigned long sslerror = ERR_get_error();
+ failf(conn->data, "SSL read: %s, errno %d",
+ ERR_error_string(sslerror, error_buffer),
+ Curl_ourerrno() );
+ }
+ return CURLE_RECV_ERROR;
+ }
+ }
+ }
+ else {
+#else
+ (void)conn;
+#endif
+ *n=0; /* reset amount to zero */
+#ifdef HAVE_KRB4
+ if(conn->sec_complete)
+ nread = Curl_sec_read(conn, sockfd, buf, buffersize);
+ else
+#endif
+ nread = sread(sockfd, buf, buffersize);
+
+ if(-1 == nread) {
+ int err = Curl_ourerrno();
+#ifdef WIN32
+ if(WSAEWOULDBLOCK == err)
+#else
+ if((EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err))
+#endif
+ return -1;
+ }
+
+#ifdef USE_SSLEAY
+ }
+#endif /* USE_SSLEAY */
+ *n = nread;
+ return CURLE_OK;
+}
+
+/* return 0 on success */
+static int showit(struct SessionHandle *data, curl_infotype type,
+ char *ptr, size_t size)
+{
+ static const char * const s_infotype[CURLINFO_END] = {
+ "* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
+
+ if(data->set.fdebug)
+ return (*data->set.fdebug)(data, type, ptr, size,
+ data->set.debugdata);
+
+ switch(type) {
+ case CURLINFO_TEXT:
+ case CURLINFO_HEADER_OUT:
+ case CURLINFO_HEADER_IN:
+ fwrite(s_infotype[type], 2, 1, data->set.err);
+ fwrite(ptr, size, 1, data->set.err);
+ break;
+ default: /* nada */
+ break;
+ }
+ return 0;
+}
+
+int Curl_debug(struct SessionHandle *data, curl_infotype type,
+ char *ptr, size_t size, char *host)
+{
+ int rc;
+ if(data->set.printhost && host) {
+ char buffer[160];
+ const char *t=NULL;
+ switch (type) {
+ case CURLINFO_HEADER_IN:
+ case CURLINFO_DATA_IN:
+ t = "from";
+ break;
+ case CURLINFO_HEADER_OUT:
+ case CURLINFO_DATA_OUT:
+ t = "to";
+ break;
+ default:
+ break;
+ }
+
+ if(t) {
+ snprintf(buffer, sizeof(buffer), "[Data %s %s]", t, host);
+ rc = showit(data, CURLINFO_TEXT, buffer, strlen(buffer));
+ if(rc)
+ return rc;
+ }
+ }
+ rc = showit(data, type, ptr, size);
+ return rc;
+}
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