Kjetil Jacobsen's patch that introduces CURLOPT_PRIVATE and CURLINFO_PRIVATE

for storage and retrieval of private data in the curl handle.

lib/getinfo.c

@@ -158,6 +158,9 @@ CURLcode Curl_getinfo(struct SessionHandle *data, CURLINFO info, ...)
   case CURLINFO_CONTENT_TYPE:
     *param_charp = data->info.contenttype;
     break;
+  case CURLINFO_PRIVATE:
+    *param_charp = data->set.private?data->set.private:(char *)"";
+    break;
   default:
     return CURLE_BAD_FUNCTION_ARGUMENT;
   }

lib/url.c

@@ -1088,6 +1088,13 @@ CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option, ...)
     data->set.proxytype = va_arg(param, long);
     break;
 
+  case CURLOPT_PRIVATE:
+    /*
+     * Set private data pointer.
+     */
+    data->set.private = va_arg(param, char *);
+    break;
+
   default:
     /* unknown tag and its companion, just ignore: */
     return CURLE_FAILED_INIT; /* correct this */

lib/urldata.h

@@ -686,6 +686,8 @@ struct UserDefined {
 
   int dns_cache_timeout; /* DNS cache timeout */
   long buffer_size;      /* size of receive buffer to use */
+
+  char *private; /* Private data */
   
 /* Here follows boolean settings that define how to behave during
    this session. They are STATIC, set by libcurl users or at least initially