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/*
* This file is part of telepathy-idle
*
* Copyright (C) 2006-2007 Collabora Limited
* Copyright (C) 2006-2007 Nokia Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "idle-handles.h"
#include <glib.h>
#include <ctype.h>
#include <string.h>
#include <telepathy-glib/telepathy-glib.h>
#define IDLE_DEBUG_FLAG IDLE_DEBUG_PARSER
#include "idle-debug.h"
#include "idle-muc-channel.h"
/* When strict_mode is true, we validate the nick strictly against the IRC
* RFCs (e.g. only ascii characters, no leading '-'. When strict_mode is
* false, we releax the requirements slightly. This is because we don't want
* to allow contribute to invalid nicks on IRC, but we want to be able to
* handle them if another client allows people to use invalid nicks */
gboolean idle_nickname_is_valid(const gchar *nickname, gboolean strict_mode) {
const gchar *char_pos;
IDLE_DEBUG("Validating nickname '%s' with strict mode %d", nickname, strict_mode);
/* FIXME: also check for max length? */
if (!nickname || *nickname == '\0')
return FALSE;
for (char_pos = nickname; *char_pos; char_pos = g_utf8_find_next_char(char_pos, NULL)) {
/* only used for non-strict checks */
gunichar ucs4char = g_utf8_get_char_validated(char_pos, -1);
switch (*char_pos) {
case '[':
case ']':
case '\\':
case '`':
case '_':
case '^':
case '{':
case '|':
case '}':
break;
/* '-' is technically not allowed as first char in a nickname */
case '-':
if (strict_mode) {
if (char_pos == nickname)
return FALSE;
}
break;
default:
if (strict_mode) {
/* only accept ascii characters in strict mode */
if (!(g_ascii_isalpha(*char_pos) || ((char_pos != nickname) && g_ascii_isdigit(*char_pos)))) {
IDLE_DEBUG("invalid character '%c'", *char_pos);
return FALSE;
}
} else {
/* allow unicode and digits as first char in non-strict mode */
if (!(g_unichar_isalpha(ucs4char) || g_unichar_isdigit(ucs4char))) {
IDLE_DEBUG("invalid character %d", ucs4char);
return FALSE;
}
}
break;
}
}
return TRUE;
}
static gboolean _channelname_is_valid(const gchar *channel) {
static const gchar not_allowed_chars[] = {' ', '\007', ',', '\r', '\n', ':', '\0'};
gsize len;
const gchar *tmp;
if (!idle_muc_channel_is_typechar(channel[0]))
return FALSE;
len = strlen(channel);
if ((len < 2) || (len > 50))
return FALSE;
if (channel[0] == '!') {
for (gsize i = 0; i < 5 && i + 1 < len; i++) {
if (!g_ascii_isupper(channel[i + 1]) && !isdigit(channel[i + 1]))
return FALSE;
}
}
tmp = strchr(channel + 1, ':');
if (tmp != NULL) {
for (const gchar *tmp2 = channel + 1; tmp2 != tmp; tmp2++) {
if (strchr(not_allowed_chars, *tmp2))
return FALSE;
}
for (const gchar *tmp2 = tmp + 1; tmp2 != channel + len; tmp2++) {
if (strchr(not_allowed_chars, *tmp2))
return FALSE;
}
} else {
for (const gchar *tmp2 = channel + 1; tmp2 != channel + len; tmp2++) {
if (strchr(not_allowed_chars, *tmp2))
return FALSE;
}
}
return TRUE;
}
gchar *idle_normalize_nickname (const gchar *id, GError **error) {
gchar *normalized;
if (!idle_nickname_is_valid(id, FALSE)) {
g_set_error(error, TP_ERROR, TP_ERROR_INVALID_HANDLE, "invalid nickname");
return NULL;
}
normalized = g_utf8_strdown(id, -1);
return normalized;
}
static gchar *_nick_normalize_func(TpHandleRepoIface *repo, const gchar *id, gpointer ctx, GError **error) {
return idle_normalize_nickname (id, error);
}
static gchar *_channel_normalize_func(TpHandleRepoIface *repo, const gchar *id, gpointer ctx, GError **error) {
gchar *normalized;
if (!_channelname_is_valid(id)) {
g_set_error(error, TP_ERROR, TP_ERROR_INVALID_HANDLE, "invalid channel ID");
return NULL;
}
normalized = g_utf8_strdown(id, -1);
return normalized;
}
void idle_handle_repos_init(TpHandleRepoIface **handles) {
g_assert(handles != NULL);
handles[TP_HANDLE_TYPE_CONTACT] = (TpHandleRepoIface *) g_object_new(TP_TYPE_DYNAMIC_HANDLE_REPO,
"handle-type", TP_HANDLE_TYPE_CONTACT,
"normalize-function", _nick_normalize_func,
"default-normalize-context", NULL,
NULL);
handles[TP_HANDLE_TYPE_ROOM] = (TpHandleRepoIface *) g_object_new(TP_TYPE_DYNAMIC_HANDLE_REPO,
"handle-type", TP_HANDLE_TYPE_ROOM,
"normalize-function", _channel_normalize_func,
"default-normalize-context", NULL,
NULL);
}
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