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-rw-r--r--lib/curl_addrinfo.c155
1 files changed, 114 insertions, 41 deletions
diff --git a/lib/curl_addrinfo.c b/lib/curl_addrinfo.c
index 5098fa4..6627a6b 100644
--- a/lib/curl_addrinfo.c
+++ b/lib/curl_addrinfo.c
@@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2010, 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
@@ -20,13 +20,10 @@
*
***************************************************************************/
-#include "setup.h"
+#include "curl_setup.h"
#include <curl/curl.h>
-#ifdef HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
@@ -36,11 +33,13 @@
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
+#ifdef HAVE_SYS_UN_H
+# include <sys/un.h>
+#endif
#ifdef __VMS
# include <in.h>
# include <inet.h>
-# include <stdlib.h>
#endif
#if defined(NETWARE) && defined(__NOVELL_LIBC__)
@@ -49,15 +48,14 @@
#endif
#include "curl_addrinfo.h"
-
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
+#include "inet_pton.h"
+#include "warnless.h"
+#include "curl_printf.h"
#include "curl_memory.h"
+
/* The last #include file should be: */
#include "memdebug.h"
-
/*
* Curl_freeaddrinfo()
*
@@ -82,13 +80,8 @@ Curl_freeaddrinfo(Curl_addrinfo *cahead)
Curl_addrinfo *ca;
for(ca = cahead; ca != NULL; ca = canext) {
-
- if(ca->ai_addr)
- free(ca->ai_addr);
-
- if(ca->ai_canonname)
- free(ca->ai_canonname);
-
+ free(ca->ai_addr);
+ free(ca->ai_canonname);
canext = ca->ai_next;
free(ca);
@@ -117,12 +110,12 @@ Curl_getaddrinfo_ex(const char *nodename,
const struct addrinfo *hints,
Curl_addrinfo **result)
{
- const struct addrinfo *ainext;
const struct addrinfo *ai;
struct addrinfo *aihead;
Curl_addrinfo *cafirst = NULL;
Curl_addrinfo *calast = NULL;
Curl_addrinfo *ca;
+ size_t ss_size;
int error;
*result = NULL; /* assume failure */
@@ -131,7 +124,28 @@ Curl_getaddrinfo_ex(const char *nodename,
if(error)
return error;
- for(ai = aihead; ai != NULL; ai = ainext) {
+ /* traverse the addrinfo list */
+
+ for(ai = aihead; ai != NULL; ai = ai->ai_next) {
+
+ /* ignore elements with unsupported address family, */
+ /* settle family-specific sockaddr structure size. */
+ if(ai->ai_family == AF_INET)
+ ss_size = sizeof(struct sockaddr_in);
+#ifdef ENABLE_IPV6
+ else if(ai->ai_family == AF_INET6)
+ ss_size = sizeof(struct sockaddr_in6);
+#endif
+ else
+ continue;
+
+ /* ignore elements without required address info */
+ if((ai->ai_addr == NULL) || !(ai->ai_addrlen > 0))
+ continue;
+
+ /* ignore elements with bogus address size */
+ if((size_t)ai->ai_addrlen < ss_size)
+ continue;
if((ca = malloc(sizeof(Curl_addrinfo))) == NULL) {
error = EAI_MEMORY;
@@ -139,35 +153,28 @@ Curl_getaddrinfo_ex(const char *nodename,
}
/* copy each structure member individually, member ordering, */
- /* size, or padding might be different for each structure. */
+ /* size, or padding might be different for each platform. */
ca->ai_flags = ai->ai_flags;
ca->ai_family = ai->ai_family;
ca->ai_socktype = ai->ai_socktype;
ca->ai_protocol = ai->ai_protocol;
- ca->ai_addrlen = 0;
+ ca->ai_addrlen = (curl_socklen_t)ss_size;
ca->ai_addr = NULL;
ca->ai_canonname = NULL;
ca->ai_next = NULL;
- if((ai->ai_addrlen > 0) && (ai->ai_addr != NULL)) {
- /* typecast below avoid warning on at least win64:
- conversion from 'size_t' to 'curl_socklen_t', possible loss of data
- */
- ca->ai_addrlen = (curl_socklen_t)ai->ai_addrlen;
- if((ca->ai_addr = malloc(ca->ai_addrlen)) == NULL) {
- error = EAI_MEMORY;
- free(ca);
- break;
- }
- memcpy(ca->ai_addr, ai->ai_addr, ca->ai_addrlen);
+ if((ca->ai_addr = malloc(ss_size)) == NULL) {
+ error = EAI_MEMORY;
+ free(ca);
+ break;
}
+ memcpy(ca->ai_addr, ai->ai_addr, ss_size);
if(ai->ai_canonname != NULL) {
if((ca->ai_canonname = strdup(ai->ai_canonname)) == NULL) {
error = EAI_MEMORY;
- if(ca->ai_addr)
- free(ca->ai_addr);
+ free(ca->ai_addr);
free(ca);
break;
}
@@ -182,8 +189,6 @@ Curl_getaddrinfo_ex(const char *nodename,
calast->ai_next = ca;
calast = ca;
- /* fetch next element fom the addrinfo list */
- ainext = ai->ai_next;
}
/* destroy the addrinfo list */
@@ -195,6 +200,18 @@ Curl_getaddrinfo_ex(const char *nodename,
Curl_freeaddrinfo(cafirst);
cafirst = NULL;
}
+ else if(!cafirst) {
+#ifdef EAI_NONAME
+ /* rfc3493 conformant */
+ error = EAI_NONAME;
+#else
+ /* rfc3493 obsoleted */
+ error = EAI_NODATA;
+#endif
+#ifdef USE_WINSOCK
+ SET_SOCKERRNO(error);
+#endif
+ }
*result = cafirst;
@@ -269,7 +286,7 @@ Curl_he2ai(const struct hostent *he, int port)
size_t ss_size;
#ifdef ENABLE_IPV6
- if (he->h_addrtype == AF_INET6)
+ if(he->h_addrtype == AF_INET6)
ss_size = sizeof (struct sockaddr_in6);
else
#endif
@@ -332,7 +349,7 @@ Curl_he2ai(const struct hostent *he, int port)
prevai = ai;
}
- if(result != CURLE_OK) {
+ if(result) {
Curl_freeaddrinfo(firstai);
firstai = NULL;
}
@@ -434,6 +451,62 @@ Curl_ip2addr(int af, const void *inaddr, const char *hostname, int port)
return ai;
}
+/*
+ * Given an IPv4 or IPv6 dotted string address, this converts it to a proper
+ * allocated Curl_addrinfo struct and returns it.
+ */
+Curl_addrinfo *Curl_str2addr(char *address, int port)
+{
+ struct in_addr in;
+ if(Curl_inet_pton(AF_INET, address, &in) > 0)
+ /* This is a dotted IP address 123.123.123.123-style */
+ return Curl_ip2addr(AF_INET, &in, address, port);
+#ifdef ENABLE_IPV6
+ else {
+ struct in6_addr in6;
+ if(Curl_inet_pton(AF_INET6, address, &in6) > 0)
+ /* This is a dotted IPv6 address ::1-style */
+ return Curl_ip2addr(AF_INET6, &in6, address, port);
+ }
+#endif
+ return NULL; /* bad input format */
+}
+
+#ifdef USE_UNIX_SOCKETS
+/**
+ * Given a path to a Unix domain socket, return a newly allocated Curl_addrinfo
+ * struct initialized with this path.
+ */
+Curl_addrinfo *Curl_unix2addr(const char *path)
+{
+ Curl_addrinfo *ai;
+ struct sockaddr_un *sa_un;
+ size_t path_len;
+
+ ai = calloc(1, sizeof(Curl_addrinfo));
+ if(!ai)
+ return NULL;
+ if((ai->ai_addr = calloc(1, sizeof(struct sockaddr_un))) == NULL) {
+ free(ai);
+ return NULL;
+ }
+ /* sun_path must be able to store the NUL-terminated path */
+ path_len = strlen(path);
+ if(path_len >= sizeof(sa_un->sun_path)) {
+ free(ai->ai_addr);
+ free(ai);
+ return NULL;
+ }
+
+ ai->ai_family = AF_UNIX;
+ ai->ai_socktype = SOCK_STREAM; /* assume reliable transport for HTTP */
+ ai->ai_addrlen = (curl_socklen_t) sizeof(struct sockaddr_un);
+ sa_un = (void *) ai->ai_addr;
+ sa_un->sun_family = AF_UNIX;
+ memcpy(sa_un->sun_path, path, path_len + 1); /* copy NUL byte */
+ return ai;
+}
+#endif
#if defined(CURLDEBUG) && defined(HAVE_FREEADDRINFO)
/*
@@ -441,7 +514,7 @@ Curl_ip2addr(int af, const void *inaddr, const char *hostname, int port)
*
* This is 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
*/
void
@@ -461,7 +534,7 @@ curl_dofreeaddrinfo(struct addrinfo *freethis,
*
* This is 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
*/
int
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-15 04:25:59 +0000