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https://github.com/profanity-im/profanity.git
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FREE_SET_NULL makes extra assignment of NULL for pointers in stack or dynamic memory that is going to be freed. FREE_SET_NULL is useful for pointers that can be used in future.
219 lines
5.0 KiB
C
219 lines
5.0 KiB
C
/*
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* jid.c
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*
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* Copyright (C) 2012, 2013 James Booth <boothj5@gmail.com>
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*
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* This file is part of Profanity.
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*
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* Profanity is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Profanity is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Profanity. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include "jid.h"
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#include "common.h"
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Jid *
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jid_create(const gchar * const str)
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{
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Jid *result = NULL;
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/* if str is NULL g_strdup returns NULL */
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gchar *trimmed = g_strdup(str);
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if (trimmed == NULL) {
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return NULL;
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}
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if (strlen(trimmed) == 0) {
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g_free(trimmed);
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return NULL;
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}
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if (g_str_has_prefix(trimmed, "/") || g_str_has_prefix(trimmed, "@")) {
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g_free(trimmed);
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return NULL;
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}
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if (!g_utf8_validate(trimmed, -1, NULL)) {
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g_free(trimmed);
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return NULL;
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}
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result = malloc(sizeof(struct jid_t));
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result->str = NULL;
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result->localpart = NULL;
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result->domainpart = NULL;
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result->resourcepart = NULL;
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result->barejid = NULL;
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result->fulljid = NULL;
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gchar *atp = g_utf8_strchr(trimmed, -1, '@');
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gchar *slashp = g_utf8_strchr(trimmed, -1, '/');
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gchar *domain_start = trimmed;
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if (atp != NULL) {
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result->localpart = g_utf8_substring(trimmed, 0, g_utf8_pointer_to_offset(trimmed, atp));
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domain_start = atp + 1;
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}
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if (slashp != NULL) {
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result->resourcepart = g_strdup(slashp + 1);
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result->domainpart = g_utf8_substring(domain_start, 0, g_utf8_pointer_to_offset(domain_start, slashp));
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result->barejid = g_utf8_substring(trimmed, 0, g_utf8_pointer_to_offset(trimmed, slashp));
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result->fulljid = g_strdup(trimmed);
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} else {
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result->domainpart = g_strdup(domain_start);
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result->barejid = g_strdup(trimmed);
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}
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if (result->domainpart == NULL) {
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jid_destroy(result);
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return NULL;
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}
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result->str = trimmed;
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return result;
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}
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Jid *
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jid_create_from_bare_and_resource(const char * const room, const char * const nick)
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{
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Jid *result;
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char *jid = create_fulljid(room, nick);
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result = jid_create(jid);
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free(jid);
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return result;
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}
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void
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jid_destroy(Jid *jid)
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{
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if (jid != NULL) {
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g_free(jid->str);
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g_free(jid->localpart);
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g_free(jid->domainpart);
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g_free(jid->resourcepart);
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g_free(jid->barejid);
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g_free(jid->fulljid);
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free(jid);
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}
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}
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gboolean
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jid_is_valid_room_form(Jid *jid)
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{
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return (jid->fulljid != NULL);
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}
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/*
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* Given a full room JID of the form
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* room@server/nick
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* Will create two new strings and point room and nick to them e.g.
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* *room = "room@server", *nick = "nick"
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* The strings must be freed by the caller
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* Returns TRUE if the JID was parsed successfully, FALSE otherwise
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*/
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gboolean
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parse_room_jid(const char * const full_room_jid, char **room, char **nick)
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{
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Jid *jid = jid_create(full_room_jid);
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if (jid == NULL) {
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return FALSE;
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}
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if (jid->resourcepart == NULL) {
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jid_destroy(jid);
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return FALSE;
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}
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*room = strdup(jid->barejid);
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*nick = strdup(jid->resourcepart);
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jid_destroy(jid);
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return TRUE;
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}
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/*
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* Given a barejid, and resourcepart, create and return a full JID of the form
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* barejid/resourcepart
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* Will return a newly created string that must be freed by the caller
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*/
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char *
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create_fulljid(const char * const barejid, const char * const resource)
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{
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GString *full_jid = g_string_new(barejid);
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g_string_append(full_jid, "/");
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g_string_append(full_jid, resource);
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char *result = strdup(full_jid->str);
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g_string_free(full_jid, TRUE);
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return result;
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}
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/*
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* Get the room name part of the full JID, e.g.
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* Full JID = "test@conference.server/person"
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* returns "test@conference.server"
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*/
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char *
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get_room_from_full_jid(const char * const full_room_jid)
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{
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char **tokens = g_strsplit(full_room_jid, "/", 0);
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char *room_part = NULL;
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if (tokens != NULL) {
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if (tokens[0] != NULL) {
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room_part = strdup(tokens[0]);
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}
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g_strfreev(tokens);
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}
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return room_part;
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}
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/*
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* Get the nickname part of the full JID, e.g.
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* Full JID = "test@conference.server/person"
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* returns "person"
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*/
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char *
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get_nick_from_full_jid(const char * const full_room_jid)
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{
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char **tokens = g_strsplit(full_room_jid, "/", 0);
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char *nick_part = NULL;
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if (tokens != NULL) {
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if (tokens[0] != NULL && tokens[1] != NULL) {
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nick_part = strdup(tokens[1]);
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}
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g_strfreev(tokens);
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}
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return nick_part;
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}
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