Peteris Krumins added CURLOPT_COOKIELIST and CURLINFO_COOKIELIST, which is a

simple interface to extracting and setting cookies in libcurl's internal
"cookie jar". See the new cookie_interface.c example code.

lib/cookie.c

@@ -85,6 +85,9 @@ Example set of cookies:
 #include <stdlib.h>
 #include <string.h>
 
+#define _MPRINTF_REPLACE /* without this on windows OS we get undefined reference to snprintf */
+#include <curl/mprintf.h>
+
 #include "urldata.h"
 #include "cookie.h"
 #include "strequal.h"
@@ -816,6 +819,34 @@ void Curl_cookie_cleanup(struct CookieInfo *c)
    }
 }
 
+/* get_netscape_format()
+ *
+ * Formats a string for Netscape output file, w/o a newline at the end.
+ *
+ * Function returns a char * to a formatted line. Has to be free()d
+*/
+static char *get_netscape_format(const struct Cookie *co)
+{
+   return aprintf(
+     "%s%s\t" /* domain */
+     "%s\t"   /* tailmatch */
+     "%s\t"   /* path */
+     "%s\t"   /* secure */
+     "%u\t"   /* expires */
+     "%s\t"   /* name */
+     "%s",    /* value */
+     /* Make sure all domains are prefixed with a dot if they allow
+        tailmatching. This is Mozilla-style. */
+     (co->tailmatch && co->domain && co->domain[0] != '.')? ".":"",
+     co->domain?co->domain:"unknown",
+     co->tailmatch?"TRUE":"FALSE",
+     co->path?co->path:"/",
+     co->secure?"TRUE":"FALSE",
+     (unsigned int)co->expires,
+     co->name,
+     co->value?co->value:"");
+}
+
 /*
  * Curl_cookie_output()
  *
@@ -847,6 +878,8 @@ int Curl_cookie_output(struct CookieInfo *c, char *dumphere)
   }
 
   if(c) {
+    char *format_ptr;
+
     fputs("# Netscape HTTP Cookie File\n"
           "# http://www.netscape.com/newsref/std/cookie_spec.html\n"
           "# This file was generated by libcurl! Edit at your own risk.\n\n",
@@ -854,26 +887,13 @@ int Curl_cookie_output(struct CookieInfo *c, char *dumphere)
     co = c->cookies;
 
     while(co) {
-      fprintf(out,
-              "%s%s\t" /* domain */
-              "%s\t" /* tailmatch */
-              "%s\t" /* path */
-              "%s\t" /* secure */
-              "%u\t" /* expires */
-              "%s\t" /* name */
-              "%s\n", /* value */
-
-              /* Make sure all domains are prefixed with a dot if they allow
-                 tailmatching. This is Mozilla-style. */
-              (co->tailmatch && co->domain && co->domain[0] != '.')? ".":"",
-              co->domain?co->domain:"unknown",
-              co->tailmatch?"TRUE":"FALSE",
-              co->path?co->path:"/",
-              co->secure?"TRUE":"FALSE",
-              (unsigned int)co->expires,
-              co->name,
-              co->value?co->value:"");
-
+      format_ptr = get_netscape_format(co);
+      if (format_ptr == NULL) {
+        fprintf(out, "#\n# Fatal libcurl error\n");
+        return 1;
+      }
+      fprintf(out, "%s\n", format_ptr);
+      free(format_ptr);
       co=co->next;
     }
   }
@@ -884,4 +904,34 @@ int Curl_cookie_output(struct CookieInfo *c, char *dumphere)
   return 0;
 }
 
+struct curl_slist *Curl_cookie_list(struct SessionHandle *data)
+{
+   struct curl_slist *list = NULL;
+   struct curl_slist *beg;
+   struct Cookie *c;
+   char *line;
+
+   if (data->cookies == NULL) return NULL;
+   if (data->cookies->numcookies == 0) return NULL;
+
+   c = data->cookies->cookies;
+
+   beg = list;
+   while (c) {
+     /* fill the list with _all_ the cookies we know */
+     line = get_netscape_format(c);
+     if (line == NULL) {
+       /* get_netscape_format returns null only if we run out of memory */
+
+       curl_slist_free_all(beg); /* free some memory */
+       return NULL;
+     }
+     list = curl_slist_append(list, line);
+     free(line);
+     c = c->next;
+   }
+
+   return list;
+}
+
 #endif /* CURL_DISABLE_HTTP || CURL_DISABLE_COOKIES */

lib/cookie.h

@@ -92,4 +92,10 @@ void Curl_cookie_freelist(struct Cookie *);
 void Curl_cookie_cleanup(struct CookieInfo *);
 int Curl_cookie_output(struct CookieInfo *, char *);
 
+#if defined(CURL_DISABLE_HTTP) || defined(CURL_DISABLE_COOKIES)
+#define Curl_cookie_list(x) NULL
+#else
+struct curl_slist *Curl_cookie_list(struct SessionHandle *data);
+#endif
+
 #endif

lib/getinfo.c

@@ -184,6 +184,9 @@ CURLcode Curl_getinfo(struct SessionHandle *data, CURLINFO info, ...)
   case CURLINFO_SSL_ENGINES:
     *param_slistp = Curl_ssl_engines_list(data);
     break;
+  case CURLINFO_COOKIELIST:
+    *param_slistp = Curl_cookie_list(data);
+    break;
   default:
     return CURLE_BAD_FUNCTION_ARGUMENT;
   }

lib/url.c

@@ -773,6 +773,37 @@ CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
      */
     data->set.cookiesession = (bool)va_arg(param, long);
     break;
+
+  case CURLOPT_COOKIELIST:
+    argptr = va_arg(param, char *);
+
+    if (argptr == NULL)
+      break;
+
+    if (strequal(argptr, "ALL")) {
+      if (data->cookies == NULL) {
+        break;
+      }
+      else {
+        /* clear all cookies */
+        Curl_cookie_freelist(data->cookies->cookies);
+        data->cookies->cookies = NULL;
+        break;
+      }
+    }
+
+    if (!data->cookies)
+      /* if cookie engine was not running, activate it */
+      data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
+
+    if (checkprefix("Set-Cookie:", argptr))
+      /* HTTP Header format line */
+      Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
+
+    else
+      /* Netscape format line */
+      Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
+    break;
 #endif /* CURL_DISABLE_COOKIES */
 
   case CURLOPT_HTTPGET: