Imported Upstream version 7.53.1

[platform/upstream/curl.git] / lib / curl_addrinfo.c

diff --git a/lib/curl_addrinfo.c b/lib/curl_addrinfo.c
index 35eb2dd..3dbfb3e 100644 (file)
--- a/lib/curl_addrinfo.c
+++ b/lib/curl_addrinfo.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, 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
@@ -47,6 +47,8 @@
 #  define in_addr_t unsigned long
 #endif
 
+#include <stddef.h>
+
 #include "curl_addrinfo.h"
 #include "inet_pton.h"
 #include "warnless.h"
@@ -146,7 +148,8 @@ Curl_getaddrinfo_ex(const char *nodename,
     if((size_t)ai->ai_addrlen < ss_size)
       continue;
 
-    if((ca = malloc(sizeof(Curl_addrinfo))) == NULL) {
+    ca = malloc(sizeof(Curl_addrinfo));
+    if(!ca) {
       error = EAI_MEMORY;
       break;
     }
@@ -163,7 +166,8 @@ Curl_getaddrinfo_ex(const char *nodename,
     ca->ai_canonname = NULL;
     ca->ai_next      = NULL;
 
-    if((ca->ai_addr = malloc(ss_size)) == NULL) {
+    ca->ai_addr = malloc(ss_size);
+    if(!ca->ai_addr) {
       error = EAI_MEMORY;
       free(ca);
       break;
@@ -171,7 +175,8 @@ Curl_getaddrinfo_ex(const char *nodename,
     memcpy(ca->ai_addr, ai->ai_addr, ss_size);
 
     if(ai->ai_canonname != NULL) {
-      if((ca->ai_canonname = strdup(ai->ai_canonname)) == NULL) {
+      ca->ai_canonname = strdup(ai->ai_canonname);
+      if(!ca->ai_canonname) {
         error = EAI_MEMORY;
         free(ca->ai_addr);
         free(ca);
@@ -286,21 +291,24 @@ Curl_he2ai(const struct hostent *he, int port)
     size_t ss_size;
 #ifdef ENABLE_IPV6
     if(he->h_addrtype == AF_INET6)
-      ss_size = sizeof (struct sockaddr_in6);
+      ss_size = sizeof(struct sockaddr_in6);
     else
 #endif
-      ss_size = sizeof (struct sockaddr_in);
+      ss_size = sizeof(struct sockaddr_in);
 
-    if((ai = calloc(1, sizeof(Curl_addrinfo))) == NULL) {
+    ai = calloc(1, sizeof(Curl_addrinfo));
+    if(!ai) {
       result = CURLE_OUT_OF_MEMORY;
       break;
     }
-    if((ai->ai_canonname = strdup(he->h_name)) == NULL) {
+    ai->ai_canonname = strdup(he->h_name);
+    if(!ai->ai_canonname) {
       result = CURLE_OUT_OF_MEMORY;
       free(ai);
       break;
     }
-    if((ai->ai_addr = calloc(1, ss_size)) == NULL) {
+    ai->ai_addr = calloc(1, ss_size);
+    if(!ai->ai_addr) {
       result = CURLE_OUT_OF_MEMORY;
       free(ai->ai_canonname);
       free(ai);
@@ -325,7 +333,7 @@ Curl_he2ai(const struct hostent *he, int port)
 
     /* leave the rest of the struct filled with zero */
 
-    switch (ai->ai_family) {
+    switch(ai->ai_family) {
     case AF_INET:
       addr = (void *)ai->ai_addr; /* storage area for this info */
 
@@ -475,34 +483,48 @@ Curl_addrinfo *Curl_str2addr(char *address, int port)
 /**
  * Given a path to a Unix domain socket, return a newly allocated Curl_addrinfo
  * struct initialized with this path.
+ * Set '*longpath' to TRUE if the error is a too long path.
  */
-Curl_addrinfo *Curl_unix2addr(const char *path)
+Curl_addrinfo *Curl_unix2addr(const char *path, bool *longpath, bool abstract)
 {
   Curl_addrinfo *ai;
   struct sockaddr_un *sa_un;
   size_t path_len;
 
+  *longpath = FALSE;
+
   ai = calloc(1, sizeof(Curl_addrinfo));
   if(!ai)
     return NULL;
-  if((ai->ai_addr = calloc(1, sizeof(struct sockaddr_un))) == NULL) {
+  ai->ai_addr = calloc(1, sizeof(struct sockaddr_un));
+  if(!ai->ai_addr) {
     free(ai);
     return NULL;
   }
+
+  sa_un = (void *) ai->ai_addr;
+  sa_un->sun_family = AF_UNIX;
+
   /* sun_path must be able to store the NUL-terminated path */
-  path_len = strlen(path);
-  if(path_len >= sizeof(sa_un->sun_path)) {
+  path_len = strlen(path) + 1;
+  if(path_len > sizeof(sa_un->sun_path)) {
     free(ai->ai_addr);
     free(ai);
+    *longpath = TRUE;
     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 */
+  ai->ai_addrlen = (curl_socklen_t)
+    ((offsetof(struct sockaddr_un, sun_path) + path_len) & 0x7FFFFFFF);
+
+  /* Abstract Unix domain socket have NULL prefix instead of suffix */
+  if(abstract)
+    memcpy(sa_un->sun_path + 1, path, path_len - 1);
+  else
+    memcpy(sa_un->sun_path, path, path_len); /* copy NUL byte */
+
   return ai;
 }
 #endif
@@ -576,7 +598,7 @@ void Curl_addrinfo_set_port(Curl_addrinfo *addrinfo, int port)
   struct sockaddr_in6 *addr6;
 #endif
   for(ca = addrinfo; ca != NULL; ca = ca->ai_next) {
-    switch (ca->ai_family) {
+    switch(ca->ai_family) {
     case AF_INET:
       addr = (void *)ca->ai_addr; /* storage area for this info */
       addr->sin_port = htons((unsigned short)port);