From da06a6e7e34d9f1c9c6cf6574aec75f4ed704b9c Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 21 Feb 2001 17:15:09 +0000
Subject: [PATCH] IPv6-adjustments

---
 lib/ftp.c     |  2 +-
 lib/getdate.c |  6 +++---
 lib/url.c     | 42 ++++++++++++++++++++++--------------------
 lib/urldata.h |  3 ++-
 4 files changed, 28 insertions(+), 25 deletions(-)

diff --git a/lib/ftp.c b/lib/ftp.c
index 8d97719fb..6fd9fd3ac 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -1058,7 +1058,7 @@ again:;
          * previous lookup.
          */
 #ifdef ENABLE_IPV6
-        res = conn->res;
+        res = conn->hp;
 #else
         he = conn->hp;
 #endif
diff --git a/lib/getdate.c b/lib/getdate.c
index 7e3cff5df..f49626d0b 100644
--- a/lib/getdate.c
+++ b/lib/getdate.c
@@ -390,7 +390,7 @@ static const short yycheck[] = {     0,
     56
 };
 /* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
-#line 3 "/usr/local/share/bison.simple"
+#line 3 "/usr/lib/bison.simple"
 /* This file comes from bison-1.28.  */
 
 /* Skeleton output parser for bison,
@@ -604,7 +604,7 @@ __yy_memcpy (char *to, char *from, unsigned int count)
 #endif
 #endif
 
-#line 217 "/usr/local/share/bison.simple"
+#line 217 "/usr/lib/bison.simple"
 
 /* The user can define YYPARSE_PARAM as the name of an argument to be passed
    into yyparse.  The argument should have type void *.
@@ -1295,7 +1295,7 @@ case 50:
     break;}
 }
    /* the action file gets copied in in place of this dollarsign */
-#line 543 "/usr/local/share/bison.simple"
+#line 543 "/usr/lib/bison.simple"
 
   yyvsp -= yylen;
   yyssp -= yylen;
diff --git a/lib/url.c b/lib/url.c
index 7905039b8..71824ad4f 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -547,8 +547,8 @@ CURLcode curl_disconnect(CURLconnect *c_connect)
     free(conn->proto.generic);
 
 #ifdef ENABLE_IPV6
-  if(conn->res) /* host name info */
-    freeaddrinfo(conn->res);
+  if(conn->hp) /* host name info */
+    freeaddrinfo(conn->hp);
 #else
   if(conn->hostent_buf) /* host name info */
     free(conn->hostent_buf);
@@ -708,6 +708,9 @@ static CURLcode ConnectPlease(struct UrlData *data,
          conn->hp->h_addr, conn->hp->h_length);
   conn->serv_addr.sin_family = conn->hp->h_addrtype;
   conn->serv_addr.sin_port = htons(data->port);
+#else
+  /* IPv6-style */
+  struct addrinfo *ai;
 #endif
 
 #if !defined(WIN32)||defined(__CYGWIN32__)
@@ -836,21 +839,22 @@ static CURLcode ConnectPlease(struct UrlData *data,
    * Connect to server/proxy
    *************************************************************/
 #ifdef ENABLE_IPV6
-  data->firstsocket = -1;
-  for (ai = conn->res; ai; ai = ai->ai_next) {
-    data->firstsocket = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
-    if (data->firstsocket < 0)
+  conn->firstsocket = -1;
+  for (ai = conn->hp; ai; ai = ai->ai_next) {
+    conn->firstsocket = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+    if (conn->firstsocket < 0)
       continue;
 
-    if (connect(data->firstsocket, ai->ai_addr, ai->ai_addrlen) < 0) {
-      close(data->firstsocket);
-      data->firstsocket = -1;
+    if (connect(conn->firstsocket, ai->ai_addr, ai->ai_addrlen) < 0) {
+      close(conn->firstsocket);
+      conn->firstsocket = -1;
       continue;
     }
 
     break;
   }
-  if (data->firstsocket < 0) {
+  conn->ai = ai;
+  if (conn->firstsocket < 0) {
     failf(data, strerror(errno));
     return CURLE_COULDNT_CONNECT;
   }
@@ -923,9 +927,6 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
   struct sigaction sigact;
 #endif
   int urllen;
-#ifdef ENABLE_IPV6
-  struct addrinfo *ai;
-#endif
 
   /*************************************************************
    * Check input data
@@ -1562,17 +1563,16 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
     data->port =  data->remote_port; /* it is the same port */
 
     /* Resolve target host right on */
+    if(!conn->hp) {
 #ifdef ENABLE_IPV6
-    if(!conn->res)
       /* it might already be set if reusing a connection */
-      conn->res = Curl_getaddrinfo(data, conn->name, data->port);
-    if(!conn->res)
+      conn->hp = Curl_getaddrinfo(data, conn->name, data->port);
 #else
-    if(!conn->hp)
       /* it might already be set if reusing a connection */
       conn->hp = Curl_gethost(data, conn->name, &conn->hostent_buf);
-    if(!conn->hp)
 #endif
+    }
+    if(!conn->hp)
     {
       failf(data, "Couldn't resolve host '%s'", conn->name);
       return CURLE_COULDNT_RESOLVE_HOST;
@@ -1702,6 +1702,8 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
 #else
     const int niflags = NI_NUMERICHOST;
 #endif
+    struct addrinfo *ai = conn->ai;
+
     if (getnameinfo(ai->ai_addr, ai->ai_addrlen, hbuf, sizeof(hbuf), NULL, 0,
 	niflags)) {
       snprintf(hbuf, sizeof(hbuf), "?");
@@ -1751,8 +1753,8 @@ CURLcode curl_connect(CURL *curl, CURLconnect **in_connect)
       if(conn->path)
         free(conn->path);
 #ifdef ENABLE_IPV6
-      if(conn->res)
-        freeaddrinfo(conn->res);
+      if(conn->hp)
+        freeaddrinfo(conn->hp);
 #else
       if(conn->hostent_buf)
         free(conn->hostent_buf);
diff --git a/lib/urldata.h b/lib/urldata.h
index fe098c3f6..d1c770a11 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -218,7 +218,8 @@ struct connectdata {
 #define PROT_FILE    (1<<8)
 
 #ifdef ENABLE_IPV6
-  struct addrinfo *res;
+  struct addrinfo *hp; /* host info pointer list */
+  struct addrinfo *ai; /* the particular host we use */
 #else
   char *hostent_buf; /* pointer to allocated memory for name info */
   struct hostent *hp;