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-rw-r--r--Source/CTest/Curl/hostip4.c456
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diff --git a/Source/CTest/Curl/hostip4.c b/Source/CTest/Curl/hostip4.c
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--- a/Source/CTest/Curl/hostip4.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 <string.h>
-#include <errno.h>
-
-#define _REENTRANT
-
-#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
-#include <malloc.h>
-#else
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-#ifdef HAVE_ARPA_INET_H
-#include <arpa/inet.h>
-#endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h> /* required for free() prototypes */
-#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h> /* for the close() proto */
-#endif
-#ifdef VMS
-#include <in.h>
-#include <inet.h>
-#include <stdlib.h>
-#endif
-#endif
-
-#ifdef HAVE_SETJMP_H
-#include <setjmp.h>
-#endif
-
-#ifdef WIN32
-#include <process.h>
-#endif
-
-#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
-#undef in_addr_t
-#define in_addr_t unsigned long
-#endif
-
-#include "urldata.h"
-#include "sendf.h"
-#include "hostip.h"
-#include "hash.h"
-#include "share.h"
-#include "strerror.h"
-#include "url.h"
-
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
-#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
-#include "inet_ntoa_r.h"
-#endif
-
-#include "curl_memory.h"
-/* The last #include file should be: */
-#include "memdebug.h"
-
-/***********************************************************************
- * Only for plain-ipv4 builds
- **********************************************************************/
-#ifdef CURLRES_IPV4 /* plain ipv4 code coming up */
-
-/*
- * This is a function for freeing name information in a protocol independent
- * way.
- */
-void Curl_freeaddrinfo(Curl_addrinfo *ai)
-{
- Curl_addrinfo *next;
-
- /* walk over the list and free all entries */
- while(ai) {
- next = ai->ai_next;
- free(ai);
- ai = next;
- }
-}
-
-/*
- * Curl_ipvalid() checks what CURL_IPRESOLVE_* requirements that might've
- * been set and returns TRUE if they are OK.
- */
-bool Curl_ipvalid(struct SessionHandle *data)
-{
- if(data->set.ip_version == CURL_IPRESOLVE_V6)
- /* an ipv6 address was requested and we can't get/use one */
- return FALSE;
-
- return TRUE; /* OK, proceed */
-}
-
-struct namebuf {
- struct hostent hostentry;
- char *h_addr_list[2];
- struct in_addr addrentry;
- char h_name[16]; /* 123.123.123.123 = 15 letters is maximum */
-};
-
-/*
- * Curl_ip2addr() takes a 32bit ipv4 internet address as input parameter
- * together with a pointer to the string version of the address, and it
- * returns a Curl_addrinfo chain filled in correctly with information for this
- * address/host.
- *
- * The input parameters ARE NOT checked for validity but they are expected
- * to have been checked already when this is called.
- */
-Curl_addrinfo *Curl_ip2addr(in_addr_t num, char *hostname, int port)
-{
- Curl_addrinfo *ai;
- struct hostent *h;
- struct in_addr *addrentry;
- struct namebuf buffer;
- struct namebuf *buf = &buffer;
-
- h = &buf->hostentry;
- h->h_addr_list = &buf->h_addr_list[0];
- addrentry = &buf->addrentry;
- addrentry->s_addr = num;
- h->h_addr_list[0] = (char*)addrentry;
- h->h_addr_list[1] = NULL;
- h->h_addrtype = AF_INET;
- h->h_length = sizeof(*addrentry);
- h->h_name = &buf->h_name[0];
- h->h_aliases = NULL;
-
- /* Now store the dotted version of the address */
- snprintf((char*)(h->h_name), 16, "%s", hostname);
-
- ai = Curl_he2ai(h, port);
-
- return ai;
-}
-
-#ifdef CURLRES_SYNCH /* the functions below are for synchronous resolves */
-
-/*
- * Curl_getaddrinfo() - the ipv4 synchronous version.
- *
- * The original code to this function was once stolen from the Dancer source
- * code, written by Bjorn Reese, it has since been patched and modified
- * considerably.
- *
- * gethostbyname_r() is the thread-safe version of the gethostbyname()
- * function. When we build for plain IPv4, we attempt to use this
- * function. There are _three_ different gethostbyname_r() versions, and we
- * detect which one this platform supports in the configure script and set up
- * the HAVE_GETHOSTBYNAME_R_3, HAVE_GETHOSTBYNAME_R_5 or
- * HAVE_GETHOSTBYNAME_R_6 defines accordingly. Note that HAVE_GETADDRBYNAME
- * has the corresponding rules. This is primarily on *nix. Note that some unix
- * flavours have thread-safe versions of the plain gethostbyname() etc.
- *
- */
-Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
- char *hostname,
- int port,
- int *waitp)
-{
- Curl_addrinfo *ai = NULL;
- struct hostent *h = NULL;
- in_addr_t in;
- struct SessionHandle *data = conn->data;
- struct hostent *buf = NULL;
-
- (void)port; /* unused in IPv4 code */
-
- *waitp = 0; /* don't wait, we act synchronously */
-
- in=inet_addr(hostname);
- if (in != CURL_INADDR_NONE) {
- /* This is a dotted IP address 123.123.123.123-style */
- return Curl_ip2addr(in, hostname, port);
- }
-
-#if defined(HAVE_GETHOSTBYNAME_R)
- /*
- * gethostbyname_r() is the preferred resolve function for many platforms.
- * Since there are three different versions of it, the following code is
- * somewhat #ifdef-ridden.
- */
- else {
- int h_errnop;
- int res=ERANGE;
-
- buf = (struct hostent *)calloc(CURL_HOSTENT_SIZE, 1);
- if(!buf)
- return NULL; /* major failure */
- /*
- * The clearing of the buffer is a workaround for a gethostbyname_r bug in
- * qnx nto and it is also _required_ for some of these functions on some
- * platforms.
- */
-
-#ifdef HAVE_GETHOSTBYNAME_R_5
- /* Solaris, IRIX and more */
- (void)res; /* prevent compiler warning */
- h = gethostbyname_r(hostname,
- (struct hostent *)buf,
- (char *)buf + sizeof(struct hostent),
- CURL_HOSTENT_SIZE - sizeof(struct hostent),
- &h_errnop);
-
- /* If the buffer is too small, it returns NULL and sets errno to
- * ERANGE. The errno is thread safe if this is compiled with
- * -D_REENTRANT as then the 'errno' variable is a macro defined to get
- * used properly for threads.
- */
-
- if(h) {
- ;
- }
- else
-#endif /* HAVE_GETHOSTBYNAME_R_5 */
-#ifdef HAVE_GETHOSTBYNAME_R_6
- /* Linux */
-
- res=gethostbyname_r(hostname,
- (struct hostent *)buf,
- (char *)buf + sizeof(struct hostent),
- CURL_HOSTENT_SIZE - sizeof(struct hostent),
- &h, /* DIFFERENCE */
- &h_errnop);
- /* Redhat 8, using glibc 2.2.93 changed the behavior. Now all of a
- * sudden this function returns EAGAIN if the given buffer size is too
- * small. Previous versions are known to return ERANGE for the same
- * problem.
- *
- * This wouldn't be such a big problem if older versions wouldn't
- * sometimes return EAGAIN on a common failure case. Alas, we can't
- * assume that EAGAIN *or* ERANGE means ERANGE for any given version of
- * glibc.
- *
- * For now, we do that and thus we may call the function repeatedly and
- * fail for older glibc versions that return EAGAIN, until we run out of
- * buffer size (step_size grows beyond CURL_HOSTENT_SIZE).
- *
- * If anyone has a better fix, please tell us!
- *
- * -------------------------------------------------------------------
- *
- * On October 23rd 2003, Dan C dug up more details on the mysteries of
- * gethostbyname_r() in glibc:
- *
- * In glibc 2.2.5 the interface is different (this has also been
- * discovered in glibc 2.1.1-6 as shipped by Redhat 6). What I can't
- * explain, is that tests performed on glibc 2.2.4-34 and 2.2.4-32
- * (shipped/upgraded by Redhat 7.2) don't show this behavior!
- *
- * In this "buggy" version, the return code is -1 on error and 'errno'
- * is set to the ERANGE or EAGAIN code. Note that 'errno' is not a
- * thread-safe variable.
- */
-
- if(!h) /* failure */
-#endif/* HAVE_GETHOSTBYNAME_R_6 */
-#ifdef HAVE_GETHOSTBYNAME_R_3
- /* AIX, Digital Unix/Tru64, HPUX 10, more? */
-
- /* For AIX 4.3 or later, we don't use gethostbyname_r() at all, because of
- * the plain fact that it does not return unique full buffers on each
- * call, but instead several of the pointers in the hostent structs will
- * point to the same actual data! This have the unfortunate down-side that
- * our caching system breaks down horribly. Luckily for us though, AIX 4.3
- * and more recent versions have a "completely thread-safe"[*] libc where
- * all the data is stored in thread-specific memory areas making calls to
- * the plain old gethostbyname() work fine even for multi-threaded
- * programs.
- *
- * This AIX 4.3 or later detection is all made in the configure script.
- *
- * Troels Walsted Hansen helped us work this out on March 3rd, 2003.
- *
- * [*] = much later we've found out that it isn't at all "completely
- * thread-safe", but at least the gethostbyname() function is.
- */
-
- if(CURL_HOSTENT_SIZE >=
- (sizeof(struct hostent)+sizeof(struct hostent_data))) {
-
- /* August 22nd, 2000: Albert Chin-A-Young brought an updated version
- * that should work! September 20: Richard Prescott worked on the buffer
- * size dilemma.
- */
-
- res = gethostbyname_r(hostname,
- (struct hostent *)buf,
- (struct hostent_data *)((char *)buf +
- sizeof(struct hostent)));
- h_errnop= errno; /* we don't deal with this, but set it anyway */
- }
- else
- res = -1; /* failure, too smallish buffer size */
-
- if(!res) { /* success */
-
- h = buf; /* result expected in h */
-
- /* This is the worst kind of the different gethostbyname_r() interfaces.
- * Since we don't know how big buffer this particular lookup required,
- * we can't realloc down the huge alloc without doing closer analysis of
- * the returned data. Thus, we always use CURL_HOSTENT_SIZE for every
- * name lookup. Fixing this would require an extra malloc() and then
- * calling Curl_addrinfo_copy() that subsequent realloc()s down the new
- * memory area to the actually used amount.
- */
- }
- else
-#endif /* HAVE_GETHOSTBYNAME_R_3 */
- {
- infof(data, "gethostbyname_r(2) failed for %s\n", hostname);
- h = NULL; /* set return code to NULL */
- free(buf);
- }
-#else /* HAVE_GETHOSTBYNAME_R */
- /*
- * Here is code for platforms that don't have gethostbyname_r() or for
- * which the gethostbyname() is the preferred() function.
- */
- else {
- h = gethostbyname(hostname);
- if (!h)
- infof(data, "gethostbyname(2) failed for %s\n", hostname);
-#endif /*HAVE_GETHOSTBYNAME_R */
- }
-
- if(h) {
- ai = Curl_he2ai(h, port);
-
- if (buf) /* used a *_r() function */
- free(buf);
- }
-
- return ai;
-}
-
-#endif /* CURLRES_SYNCH */
-
-/*
- * Curl_he2ai() translates from a hostent struct to a Curl_addrinfo struct.
- * The Curl_addrinfo is meant to work like the addrinfo struct does for IPv6
- * stacks, but for all hosts and environments.
-
-struct Curl_addrinfo {
- int ai_flags;
- int ai_family;
- int ai_socktype;
- int ai_protocol;
- size_t ai_addrlen;
- struct sockaddr *ai_addr;
- char *ai_canonname;
- struct addrinfo *ai_next;
-};
-
-struct hostent {
- char *h_name; * official name of host *
- char **h_aliases; * alias list *
- int h_addrtype; * host address type *
- int h_length; * length of address *
- char **h_addr_list; * list of addresses *
-}
-#define h_addr h_addr_list[0] * for backward compatibility *
-
-*/
-
-Curl_addrinfo *Curl_he2ai(struct hostent *he, int port)
-{
- Curl_addrinfo *ai;
- Curl_addrinfo *prevai = NULL;
- Curl_addrinfo *firstai = NULL;
- int i;
-
- union {
- struct in_addr *addr;
- char* list;
- } curr;
- union {
- struct sockaddr_in* addr_in;
- struct sockaddr* addr;
- } address;
-
- if(!he)
- /* no input == no output! */
- return NULL;
-
- for(i=0; (curr.list = he->h_addr_list[i]); i++) {
-
- ai = calloc(1, sizeof(Curl_addrinfo) + sizeof(struct sockaddr_in));
-
- if(!ai)
- break;
-
- if(!firstai)
- /* store the pointer we want to return from this function */
- firstai = ai;
-
- if(prevai)
- /* make the previous entry point to this */
- prevai->ai_next = ai;
-
- ai->ai_family = AF_INET; /* we only support this */
- ai->ai_socktype = SOCK_STREAM; /* we only support this */
- ai->ai_addrlen = sizeof(struct sockaddr_in);
- /* make the ai_addr point to the address immediately following this struct
- and use that area to store the address */
- ai->ai_addr = (struct sockaddr *) (ai + 1);
-
- /* leave the rest of the struct filled with zero */
-
- address.addr = ai->ai_addr; /* storage area for this info */
-
- memcpy((char *)&(address.addr_in->sin_addr), curr.addr, sizeof(struct in_addr));
- address.addr_in->sin_family = he->h_addrtype;
- address.addr_in->sin_port = htons((unsigned short)port);
-
- prevai = ai;
- }
- return firstai;
-}
-
-#endif /* CURLRES_IPV4 */
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