From: "Wes L. Zuber" <wes@uia.net>

Note that once the patch is installed it can be turned off in the 
client_side.c file by commenting out the "DANSGUARDIAN_IP_FORWARD" 
define.

1. Copy the patch to a file.. and name it something like  
dans_to_squid.patch.
2. Then move the file into the Squid expanded directory.  It should  be  
something like: squid-2.4.STABLE4/
3. CD to the directory
4. Run: patch -Np1 < ../dans_to_squid.patch
5. You should get a successful patch.

Then recompile everything and install.

Go to go!


diff -ru squid-2.4.STABLE4/src/client_side.c 

squid-2.4.STABLE4.new/src/client_side.c
--- squid-2.4.STABLE4/src/client_side.c	Fri Apr 20 16:21:41 2001
+++ squid-2.4.STABLE4.new/src/client_side.c	Fri Nov  1 08:14:07 2002
@@ -74,7 +74,7 @@
  static const char *const crlf = "\r\n";

  #define FAILURE_MODE_TIME 300
-
+#define DANSGUARDIAN_IP_FORWARD
  /* Local functions */

  static CWCB clientWriteComplete;
@@ -695,6 +695,9 @@
      clientHttpRequest **H;
      ConnStateData *conn = http->conn;
      StoreEntry *e;
+#ifdef DANSGUARDIAN_IP_FORWARD
+    String 	s;
+#endif
      request_t *request = http->request;
      MemObject *mem = NULL;
      debug(33, 3) ("httpRequestFree: %s\n", storeUrl(http->entry));
@@ -725,7 +728,15 @@
  	    http->al.http.code = mem->reply->sline.status;
  	    http->al.http.content_type = strBuf(mem->reply->content_type);
  	}
+
  	http->al.cache.caddr = conn->log_addr;
+#ifdef DANSGUARDIAN_IP_FORWARD
+	if (httpHeaderHas(&request->header, HDR_X_FORWARDED_FOR)) {
+	    s = httpHeaderGetList(&request->header, HDR_X_FORWARDED_FOR);
+	    if (! inet_pton (AF_INET,strBuf(s),&http->al.cache.caddr))
+	    	http->al.cache.caddr = conn->log_addr;
+	}
+#endif
  	http->al.cache.size = http->out.size;
  	http->al.cache.code = http->log_type;
  	http->al.cache.msec = tvSubMsec(http->start, current_time);