Fully working phone call support, might need some tweaks and checks

loop.c

@@ -517,12 +517,18 @@ int loop (void) {
       do_send_code (default_username);
       char *code = 0;
       size_t size = 0;
-      printf ("Code from sms: ");
+      printf ("Code from sms (if you did not receive an SMS and want to be called, type 0): ");
       while (1) {
         if (net_getline (&code, &size) == -1) {
           perror ("getline()");
           exit (EXIT_FAILURE);
         }
+        if (*code == '0') {
+          printf ("You typed 0, switching to phone system.\n");
+          do_phone_call (default_username);
+          printf ("Calling you! Code: ");
+          continue;
+        }
         if (do_send_code_result (code) >= 0) {
           break;
         }
@@ -563,12 +569,18 @@ int loop (void) {
       DC_working = DC_list[dc_working_num];
       
       do_send_code (default_username);
-      printf ("Code from sms: ");
+      printf ("Code from sms (if you did not receive an SMS and want to be called, type 0): ");
       while (1) {
         if (net_getline (&code, &size) == -1) {
           perror ("getline()");
           exit (EXIT_FAILURE);
         }
+        if (*code == '0') {
+          printf ("You typed 0, switching to phone system.\n");
+          do_phone_call (default_username);
+          printf ("Calling you! Code: ");
+          continue;
+        }
         if (do_send_code_result_auth (code, first_name, last_name) >= 0) {
           break;
         }

queries.c

@@ -468,6 +468,38 @@ void do_send_code (const char *user) {
   net_loop (0, code_is_sent);
   assert (want_dc_num == -1);
 }
+
+
+int phone_call_on_answer (struct query *q UU) {
+  fetch_bool ();
+  assert(1);
+  return 0;
+}
+
+int phone_call_on_error (struct query *q UU, int error_code, int l, char *error) {
+  logprintf ( "error_code = %d, error = %.*s\n", error_code, l, error);
+  assert (0);
+  return 0;
+}
+
+struct query_methods phone_call_methods  = {
+  .on_answer = phone_call_on_answer,
+  .on_error = phone_call_on_error
+};
+
+void do_phone_call (const char *user) {
+  logprintf ("calling user\n");
+  suser = tstrdup (user);
+  want_dc_num = 0;
+  clear_packet ();
+  do_insert_header ();
+  out_int (CODE_auth_send_call);
+  out_string (user);
+  out_string (phone_code_hash);
+
+  logprintf ("do_phone_call: dc_num = %d\n", dc_working_num);
+  send_query (DC_working, packet_ptr - packet_buffer, packet_buffer, &phone_call_methods, 0);
+}
 /* }}} */
 
 /* {{{ Check phone */

queries.h

@@ -64,6 +64,7 @@ void work_timers (void);
 extern struct query_methods help_get_config_methods;
 
 void do_send_code (const char *user);
+void do_phone_call (const char *user);
 int do_send_code_result (const char *code);
 double get_double_time (void);