* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2014, 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
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
- * $Id$
***************************************************************************/
-#include "setup.h"
+#include "curl_setup.h"
-#include <string.h>
-#include <errno.h>
-
-#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_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
+#ifdef __VMS
#include <in.h>
#include <inet.h>
-#include <stdlib.h>
-#endif
-#endif
-
-#ifdef HAVE_SETJMP_H
-#include <setjmp.h>
#endif
-#ifdef WIN32
+#ifdef HAVE_PROCESS_H
#include <process.h>
#endif
#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"
+#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
/***********************************************************************
- * Only for ipv6-enabled builds
+ * 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
+#if defined(CURLDEBUG) && defined(HAVE_GETNAMEINFO)
/* 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
+ * require a bunch of structs I didn't want to include in memdebug.c
+ */
+
+/*
+ * For CURLRES_ARS, this should be written using ares_gethostbyaddr()
+ * (ignoring the fact c-ares doesn't return 'serv').
*/
-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 curl_dogetnameinfo(GETNAMEINFO_QUAL_ARG1 GETNAMEINFO_TYPE_ARG1 sa,
+ GETNAMEINFO_TYPE_ARG2 salen,
+ char *host, GETNAMEINFO_TYPE_ARG46 hostlen,
+ char *serv, GETNAMEINFO_TYPE_ARG46 servlen,
+ GETNAMEINFO_TYPE_ARG7 flags,
int line, const char *source)
{
- int res=(getnameinfo)(sa, salen, host, hostlen, serv, servlen, flags);
- if(0 == res) {
+ 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);
- }
+ curl_memlog("GETNAME %s:%d getnameinfo()\n",
+ source, line);
+ else
+ curl_memlog("GETNAME %s:%d getnameinfo() failed = %d\n",
+ source, line, res);
return res;
}
+#endif /* defined(CURLDEBUG) && defined(HAVE_GETNAMEINFO) */
-void curl_dofreeaddrinfo(struct addrinfo *freethis,
- int line, const char *source)
+/*
+ * Curl_ipv6works() returns TRUE if IPv6 seems to work.
+ */
+bool Curl_ipv6works(void)
{
- (freeaddrinfo)(freethis);
- if(logfile)
- fprintf(logfile, "ADDR %s:%d freeaddrinfo(%p)\n",
- source, line, (void *)freethis);
+ /* the nature of most system is that IPv6 status doesn't come and go
+ during a program's lifetime so we only probe the first time and then we
+ have the info kept for fast re-use */
+ static int ipv6_works = -1;
+ if(-1 == ipv6_works) {
+ /* probe to see if we have a working IPv6 stack */
+ curl_socket_t s = socket(PF_INET6, SOCK_DGRAM, 0);
+ if(s == CURL_SOCKET_BAD)
+ /* an IPv6 address was requested but we can't get/use one */
+ ipv6_works = 0;
+ else {
+ ipv6_works = 1;
+ Curl_closesocket(NULL, s);
+ }
+ }
+ return (ipv6_works>0)?TRUE:FALSE;
}
-#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)
+bool Curl_ipvalid(struct connectdata *conn)
{
- 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);
- }
+ if(conn->ip_version == CURL_IPRESOLVE_V6)
+ return Curl_ipv6works();
return TRUE;
}
-#ifndef USE_THREADING_GETADDRINFO
+#if defined(CURLRES_SYNCH)
+
+#ifdef DEBUG_ADDRINFO
+static void dump_addrinfo(struct connectdata *conn, const Curl_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, SOCKERRNO));
+ }
+}
+#else
+#define dump_addrinfo(x,y) Curl_nop_stmt
+#endif
+
/*
- * Curl_getaddrinfo() when built ipv6-enabled (non-threading version).
+ * Curl_getaddrinfo() when built IPv6-enabled (non-threading and
+ * non-ares version).
*
* Returns name information about the given hostname and port number. If
* successful, the 'addrinfo' is returned and the forth argument will point to
* Curl_freeaddrinfo(), nothing else.
*/
Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
- char *hostname,
+ const char *hostname,
int port,
int *waitp)
{
- struct addrinfo hints, *res;
+ struct addrinfo hints;
+ Curl_addrinfo *res;
int error;
- char sbuf[NI_MAXSERV];
+ char sbuf[12];
char *sbufptr = NULL;
char addrbuf[128];
- curl_socket_t s;
int pf;
struct SessionHandle *data = conn->data;
- int ai_flags;
-
- *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. */
+ *waitp = 0; /* synchronous response only */
+ /*
+ * Check if a limited name resolve has been requested.
+ */
+ switch(conn->ip_version) {
+ case CURL_IPRESOLVE_V4:
pf = PF_INET;
+ break;
+ case CURL_IPRESOLVE_V6:
+ pf = PF_INET6;
+ break;
+ default:
+ pf = PF_UNSPEC;
+ break;
}
- 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;
- }
- }
+ if((pf != PF_INET) && !Curl_ipv6works())
+ /* The stack seems to be a non-IPv6 one */
+ pf = PF_INET;
+
+ 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 */
- ai_flags = AI_NUMERICHOST;
+ hints.ai_flags = AI_NUMERICHOST;
}
- else
- ai_flags = AI_CANONNAME;
-
- memset(&hints, 0, sizeof(hints));
- hints.ai_family = pf;
-
- hints.ai_socktype = conn->socktype;
- hints.ai_flags = ai_flags;
if(port) {
snprintf(sbuf, sizeof(sbuf), "%d", port);
sbufptr=sbuf;
}
- error = getaddrinfo(hostname, sbufptr, &hints, &res);
- if (error) {
+ error = Curl_getaddrinfo_ex(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 */
+#endif /* CURLRES_SYNCH */
+#endif /* CURLRES_IPV6 */
projects / platform / upstream / curl.git / blobdiff