297 строки
7.8 KiB
C
297 строки
7.8 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2005, 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>
|
|
|
|
#ifdef HAVE_MALLOC_H
|
|
#include <malloc.h>
|
|
#endif
|
|
#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
|
|
|
|
#ifdef HAVE_SETJMP_H
|
|
#include <setjmp.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_PROCESS_H
|
|
#include <process.h>
|
|
#endif
|
|
|
|
#include "urldata.h"
|
|
#include "sendf.h"
|
|
#include "hostip.h"
|
|
#include "hash.h"
|
|
#include "share.h"
|
|
#include "strerror.h"
|
|
#include "url.h"
|
|
#include "inet_pton.h"
|
|
#include "connect.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 "memory.h"
|
|
/* The last #include file should be: */
|
|
#include "memdebug.h"
|
|
|
|
/***********************************************************************
|
|
* Only for ipv6-enabled builds
|
|
**********************************************************************/
|
|
#ifdef CURLRES_IPV6
|
|
/*
|
|
* This is a wrapper function for freeing name information in a protocol
|
|
* independent way. This takes care of using the appropriate underlaying
|
|
* function.
|
|
*/
|
|
void Curl_freeaddrinfo(Curl_addrinfo *p)
|
|
{
|
|
freeaddrinfo(p);
|
|
}
|
|
|
|
#ifdef CURLRES_ASYNCH
|
|
/*
|
|
* Curl_addrinfo_copy() is used by the asynch callback to copy a given
|
|
* address. But this is an ipv6 build and then we don't copy the address, we
|
|
* just return the same pointer!
|
|
*/
|
|
Curl_addrinfo *Curl_addrinfo_copy(void *source, int port)
|
|
{
|
|
(void) port;
|
|
return source;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CURLDEBUG
|
|
/* These are strictly for memory tracing and are using the same style as the
|
|
* family otherwise present in memdebug.c. I put these ones here since they
|
|
* require a bunch of structs I didn't wanna include in memdebug.c
|
|
*/
|
|
int curl_dogetaddrinfo(char *hostname, char *service,
|
|
struct addrinfo *hints,
|
|
struct addrinfo **result,
|
|
int line, const char *source)
|
|
{
|
|
int res=(getaddrinfo)(hostname, service, hints, result);
|
|
if(0 == res) {
|
|
/* success */
|
|
if(logfile)
|
|
fprintf(logfile, "ADDR %s:%d getaddrinfo() = %p\n",
|
|
source, line, (void *)*result);
|
|
}
|
|
else {
|
|
if(logfile)
|
|
fprintf(logfile, "ADDR %s:%d getaddrinfo() failed\n",
|
|
source, line);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int curl_dogetnameinfo(const struct sockaddr *sa, socklen_t salen,
|
|
char *host, size_t hostlen,
|
|
char *serv, size_t servlen, int flags,
|
|
int line, const char *source)
|
|
{
|
|
int res = (getnameinfo)(sa, salen,
|
|
host, hostlen,
|
|
serv, servlen,
|
|
flags);
|
|
if(0 == res) {
|
|
/* success */
|
|
if(logfile)
|
|
fprintf(logfile, "GETNAME %s:%d getnameinfo()\n",
|
|
source, line);
|
|
}
|
|
else {
|
|
if(logfile)
|
|
fprintf(logfile, "GETNAME %s:%d getnameinfo() failed = %d\n",
|
|
source, line, res);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
void curl_dofreeaddrinfo(struct addrinfo *freethis,
|
|
int line, const char *source)
|
|
{
|
|
(freeaddrinfo)(freethis);
|
|
if(logfile)
|
|
fprintf(logfile, "ADDR %s:%d freeaddrinfo(%p)\n",
|
|
source, line, (void *)freethis);
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* 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) {
|
|
/* see if we have an IPv6 stack */
|
|
curl_socket_t s = socket(PF_INET6, SOCK_DGRAM, 0);
|
|
if (s == CURL_SOCKET_BAD)
|
|
/* an ipv6 address was requested and we can't get/use one */
|
|
return FALSE;
|
|
sclose(s);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
#ifndef USE_THREADING_GETADDRINFO
|
|
|
|
#ifdef DEBUG_ADDRINFO
|
|
static void dump_addrinfo(struct connectdata *conn, const struct addrinfo *ai)
|
|
{
|
|
printf("dump_addrinfo:\n");
|
|
for ( ; ai; ai = ai->ai_next) {
|
|
char buf[INET6_ADDRSTRLEN];
|
|
|
|
printf(" fam %2d, CNAME %s, ",
|
|
ai->ai_family, ai->ai_canonname ? ai->ai_canonname : "<none>");
|
|
if (Curl_printable_address(ai, buf, sizeof(buf)))
|
|
printf("%s\n", buf);
|
|
else
|
|
printf("failed; %s\n", Curl_strerror(conn, Curl_sockerrno()));
|
|
}
|
|
}
|
|
#else
|
|
#define dump_addrinfo(x,y)
|
|
#endif
|
|
|
|
/*
|
|
* Curl_getaddrinfo() when built ipv6-enabled (non-threading version).
|
|
*
|
|
* Returns name information about the given hostname and port number. If
|
|
* successful, the 'addrinfo' is returned and the forth argument will point to
|
|
* memory we need to free after use. That memory *MUST* be freed with
|
|
* Curl_freeaddrinfo(), nothing else.
|
|
*/
|
|
Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
|
|
char *hostname,
|
|
int port,
|
|
int *waitp)
|
|
{
|
|
struct addrinfo hints, *res;
|
|
int error;
|
|
char sbuf[NI_MAXSERV];
|
|
char *sbufptr = NULL;
|
|
char addrbuf[128];
|
|
curl_socket_t s;
|
|
int pf;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
*waitp=0; /* don't wait, we have the response now */
|
|
|
|
/* see if we have an IPv6 stack */
|
|
s = socket(PF_INET6, SOCK_DGRAM, 0);
|
|
if (s < 0) {
|
|
/* Some non-IPv6 stacks have been found to make very slow name resolves
|
|
* when PF_UNSPEC is used, so thus we switch to a mere PF_INET lookup if
|
|
* the stack seems to be a non-ipv6 one. */
|
|
|
|
pf = PF_INET;
|
|
}
|
|
else {
|
|
/* This seems to be an IPv6-capable stack, use PF_UNSPEC for the widest
|
|
* possible checks. And close the socket again.
|
|
*/
|
|
sclose(s);
|
|
|
|
/*
|
|
* Check if a more limited name resolve has been requested.
|
|
*/
|
|
switch(data->set.ip_version) {
|
|
case CURL_IPRESOLVE_V4:
|
|
pf = PF_INET;
|
|
break;
|
|
case CURL_IPRESOLVE_V6:
|
|
pf = PF_INET6;
|
|
break;
|
|
default:
|
|
pf = PF_UNSPEC;
|
|
break;
|
|
}
|
|
}
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = pf;
|
|
hints.ai_socktype = conn->socktype;
|
|
|
|
if((1 == Curl_inet_pton(AF_INET, hostname, addrbuf)) ||
|
|
(1 == Curl_inet_pton(AF_INET6, hostname, addrbuf))) {
|
|
/* the given address is numerical only, prevent a reverse lookup */
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
}
|
|
#if 0 /* removed nov 8 2005 before 7.15.1 */
|
|
else
|
|
hints.ai_flags = AI_CANONNAME;
|
|
#endif
|
|
|
|
if(port) {
|
|
snprintf(sbuf, sizeof(sbuf), "%d", port);
|
|
sbufptr=sbuf;
|
|
}
|
|
error = getaddrinfo(hostname, sbufptr, &hints, &res);
|
|
if (error) {
|
|
infof(data, "getaddrinfo(3) failed for %s:%d\n", hostname, port);
|
|
return NULL;
|
|
}
|
|
|
|
dump_addrinfo(conn, res);
|
|
|
|
return res;
|
|
}
|
|
#endif /* USE_THREADING_GETADDRINFO */
|
|
#endif /* ipv6 */
|
|
|