From 17e8d60c01f8f020e3738db855584f23fb892a04 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 19 Feb 2007 11:53:54 +0000
Subject: - Robson Braga Araujo made passive FTP transfers work with SOCKS
 (both 4 and   5).

---
 lib/ftp.c   | 17 +++++++++++++++++
 lib/socks.c | 22 ++++++++++++++--------
 lib/socks.h |  6 ++++++
 lib/url.c   |  6 ++++--
 4 files changed, 41 insertions(+), 10 deletions(-)

(limited to 'lib')

diff --git a/lib/ftp.c b/lib/ftp.c
index e0884437a..28ecdcdc1 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -1737,6 +1737,23 @@ static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
     /* this just dumps information about this second connection */
     ftp_pasv_verbose(conn, conninfo, newhost, connectport);
 
+  switch(data->set.proxytype) {
+  case CURLPROXY_SOCKS5:
+    result = Curl_SOCKS5(conn->proxyuser, conn->proxypasswd, newhost, newport,
+                         SECONDARYSOCKET, conn);
+    break;
+  case CURLPROXY_HTTP:
+    /* do nothing here. handled later. */
+    break;
+  case CURLPROXY_SOCKS4:
+    result = Curl_SOCKS4(conn->proxyuser, newhost, newport,
+                         SECONDARYSOCKET, conn);
+    break;
+  default:
+    failf(data, "unknown proxytype option given");
+    result = CURLE_COULDNT_CONNECT;
+    break;
+  }
 #ifndef CURL_DISABLE_HTTP
   if(conn->bits.tunnel_proxy && conn->bits.httpproxy) {
     /* FIX: this MUST wait for a proper connect first if 'connected' is
diff --git a/lib/socks.c b/lib/socks.c
index b8bda8eeb..accab029b 100644
--- a/lib/socks.c
+++ b/lib/socks.c
@@ -108,12 +108,15 @@ static int blockread_all(struct connectdata *conn, /* connection data */
 *   Nonsupport "Identification Protocol (RFC1413)"
 */
 CURLcode Curl_SOCKS4(const char *proxy_name,
+                     char *hostname,
+                     int remote_port,
+                     int sockindex,
                      struct connectdata *conn)
 {
   unsigned char socksreq[262]; /* room for SOCKS4 request incl. user id */
   int result;
   CURLcode code;
-  curl_socket_t sock = conn->sock[FIRSTSOCKET];
+  curl_socket_t sock = conn->sock[sockindex];
   long timeout;
   struct SessionHandle *data = conn->data;
 
@@ -146,7 +149,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
 
   socksreq[0] = 4; /* version (SOCKS4) */
   socksreq[1] = 1; /* connect */
-  *((unsigned short*)&socksreq[2]) = htons(conn->remote_port);
+  *((unsigned short*)&socksreq[2]) = htons(remote_port);
 
   /* DNS resolve */
   {
@@ -154,7 +157,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
     Curl_addrinfo *hp=NULL;
     int rc;
 
-    rc = Curl_resolv(conn, conn->host.name, (int)conn->remote_port, &dns);
+    rc = Curl_resolv(conn, hostname, remote_port, &dns);
 
     if(rc == CURLRESOLV_ERROR)
       return CURLE_COULDNT_RESOLVE_PROXY;
@@ -190,7 +193,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
     }
     if(!hp) {
       failf(data, "Failed to resolve \"%s\" for SOCKS4 connect.",
-            conn->host.name);
+            hostname);
       return CURLE_COULDNT_RESOLVE_HOST;
     }
   }
@@ -312,6 +315,9 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
  */
 CURLcode Curl_SOCKS5(const char *proxy_name,
                      const char *proxy_password,
+                     char *hostname,
+                     int remote_port,
+                     int sockindex,
                      struct connectdata *conn)
 {
   /*
@@ -336,7 +342,7 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
   ssize_t written;
   int result;
   CURLcode code;
-  curl_socket_t sock = conn->sock[FIRSTSOCKET];
+  curl_socket_t sock = conn->sock[sockindex];
   struct SessionHandle *data = conn->data;
   long timeout;
 
@@ -507,7 +513,7 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
   {
     struct Curl_dns_entry *dns;
     Curl_addrinfo *hp=NULL;
-    int rc = Curl_resolv(conn, conn->host.name, (int)conn->remote_port, &dns);
+    int rc = Curl_resolv(conn, hostname, remote_port, &dns);
 
     if(rc == CURLRESOLV_ERROR)
       return CURLE_COULDNT_RESOLVE_HOST;
@@ -541,12 +547,12 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
     }
     if(!hp) {
       failf(data, "Failed to resolve \"%s\" for SOCKS5 connect.",
-            conn->host.name);
+            hostname);
       return CURLE_COULDNT_RESOLVE_HOST;
     }
   }
 
-  *((unsigned short*)&socksreq[8]) = htons(conn->remote_port);
+  *((unsigned short*)&socksreq[8]) = htons(remote_port);
 
   {
     const int packetsize = 10;
diff --git a/lib/socks.h b/lib/socks.h
index 0da987998..471b26224 100644
--- a/lib/socks.h
+++ b/lib/socks.h
@@ -28,6 +28,9 @@
  * final destination server.
  */
 CURLcode Curl_SOCKS4(const char *proxy_name,
+                     char *hostname,
+                     int remote_port,
+                     int sockindex,
                      struct connectdata *conn);
 
 /*
@@ -36,6 +39,9 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
  */
 CURLcode Curl_SOCKS5(const char *proxy_name,
                      const char *proxy_password,
+                     char *hostname,
+                     int remote_port,
+                     int sockindex,
                      struct connectdata *conn);
 
 #endif
diff --git a/lib/url.c b/lib/url.c
index 6d1fa0459..692e66c2d 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -2287,13 +2287,15 @@ static CURLcode ConnectPlease(struct SessionHandle *data,
 
     switch(data->set.proxytype) {
     case CURLPROXY_SOCKS5:
-      result = Curl_SOCKS5(conn->proxyuser, conn->proxypasswd, conn);
+      result = Curl_SOCKS5(conn->proxyuser, conn->proxypasswd, conn->host.name,
+                           conn->remote_port, FIRSTSOCKET, conn);
       break;
     case CURLPROXY_HTTP:
       /* do nothing here. handled later. */
       break;
     case CURLPROXY_SOCKS4:
-      result = Curl_SOCKS4(conn->proxyuser, conn);
+      result = Curl_SOCKS4(conn->proxyuser, conn->host.name, conn->remote_port,
+                           FIRSTSOCKET, conn);
       break;
     default:
       failf(data, "unknown proxytype option given");
-- 
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