Add support for retrieving proxy auto-configuration via DNS

diff --git a/src/wpad.c b/src/wpad.c
index bbb7dc1..38d4ce2 100644 (file)
--- a/src/wpad.c
+++ b/src/wpad.c
@@ -23,26 +23,123 @@
 #include <config.h>
 #endif
 
+#include <stdlib.h>
+
+#include <gresolv/gresolv.h>
+
 #include "connman.h"
 
+struct connman_wpad {
+       struct connman_service *service;
+       GResolv *resolv;
+       char *hostname;
+};
+
+static GHashTable *wpad_list = NULL;
+
+static void resolv_debug(const char *str, void *data)
+{
+       connman_info("%s: %s\n", (const char *) data, str);
+}
+
+static void free_wpad(gpointer data)
+{
+        struct connman_wpad *wpad = data;
+
+       g_resolv_unref(wpad->resolv);
+
+       g_free(wpad->hostname);
+        g_free(wpad);
+}
+
+static void wpad_result(GResolvResultStatus status,
+                                       char **results, gpointer user_data)
+{
+       struct connman_wpad *wpad = user_data;
+
+       DBG("status %d", status);
+
+       if (status == G_RESOLV_RESULT_STATUS_SUCCESS)
+               connman_info("PAC: http://%s/wpad.dat", wpad->hostname);
+}
+
 void __connman_wpad_start(struct connman_service *service)
 {
+       struct connman_wpad *wpad;
+       const char *domainname, *nameserver;
+       int index;
+
        DBG("service %p", service);
+
+       if (wpad_list == NULL)
+               return;
+
+       index = __connman_service_get_index(service);
+       if (index < 0)
+               return;
+
+       domainname = __connman_service_get_domainname(service);
+       if (domainname == NULL)
+               return;
+
+       nameserver = __connman_service_get_nameserver(service);
+       if (nameserver == NULL)
+               return;
+
+       wpad = g_try_new0(struct connman_wpad, 1);
+       if (wpad == NULL)
+               return;
+
+       wpad->service = service;
+       wpad->resolv = g_resolv_new(index);
+       if (wpad->resolv == NULL) {
+               g_free(wpad);
+               return;
+       }
+
+       if (getenv("CONNMAN_RESOLV_DEBUG"))
+               g_resolv_set_debug(wpad->resolv, resolv_debug, "RESOLV");
+
+       g_resolv_add_nameserver(wpad->resolv, nameserver, 53, 0);
+
+       wpad->hostname = g_strdup_printf("wpad.%s", domainname);
+
+       g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
+                                                       wpad_result, wpad);
+
+       g_hash_table_insert(wpad_list, GINT_TO_POINTER(index), wpad);
 }
 
 void __connman_wpad_stop(struct connman_service *service)
 {
+       int index;
+
        DBG("service %p", service);
+
+       if (wpad_list == NULL)
+               return;
+
+       index = __connman_service_get_index(service);
+       if (index < 0)
+               return;
+
+       g_hash_table_remove(wpad_list, GINT_TO_POINTER(index));
 }
 
 int __connman_wpad_init(void)
 {
        DBG("");
 
+       wpad_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
+                                                       NULL, free_wpad);
+
        return 0;
 }
 
 void __connman_wpad_cleanup(void)
 {
        DBG("");
+
+       g_hash_table_destroy(wpad_list);
+       wpad_list = NULL;
 }