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/* XChat-WDK
* Copyright (c) 2010 <ygrek@autistici.org>
* Copyright (c) 2012 Berke Viktor.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/*
* SASL authentication plugin for XChat
* Extremely primitive: only PLAIN, no error checking
*
* http://ygrek.org.ua/p/cap_sasl.html
*
* Docs:
* http://hg.atheme.org/charybdis/charybdis/file/6144f52a119b/doc/sasl.txt
* http://tools.ietf.org/html/rfc4422
*/
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <glib/gbase64.h>
#include "xchat-plugin.h"
static xchat_plugin *ph; /* plugin handle */
static const char name[] = "XSASL";
static const char desc[] = "SASL authentication plugin for XChat";
static const char version[] = "1.0";
struct sasl_info
{
char const* login;
char const* password;
char const* network;
};
typedef struct sasl_info sasl_info;
static void
add_info (char const* login, char const* password, char const* network)
{
char buffer[512];
sprintf (buffer, "%s:%s", login, password);
xchat_set_pluginpref_str (ph, network, buffer);
}
static sasl_info*
find_info (char const* network)
{
char buffer[512];
char* token;
sasl_info* cur = (sasl_info*) malloc (sizeof (sasl_info));
if (xchat_get_pluginpref_str (ph, network, buffer))
{
token = strtok (buffer, ":");
cur->login = g_strdup (token);
token = strtok (NULL, ":");
cur->password = g_strdup (token);
cur->network = g_strdup (network);
return cur;
}
return NULL;
}
static sasl_info*
get_info (void)
{
const char* name;
name = xchat_get_info (ph, "network");
if (name)
{
return find_info (name);
}
else
{
return NULL;
}
}
static int
authend_cb (char *word[], char *word_eol[], void *userdata)
{
if (get_info ())
{
xchat_printf (ph, "XSASL result: %s\n", word_eol[1]);
xchat_commandf (ph, "QUOTE CAP END");
}
return XCHAT_EAT_ALL;
}
/*
static int
disconnect_cb (char *word[], void *userdata)
{
xchat_printf (ph, "disconnected\n");
return XCHAT_EAT_NONE;
}
*/
static int
server_cb (char *word[], char *word_eol[], void *userdata)
{
size_t len;
char* buf;
char* enc;
sasl_info* p;
if (strcmp ("AUTHENTICATE", word[1]) == 0 && strcmp ("+", word[2]) == 0)
{
p = get_info ();
if (!p)
{
return XCHAT_EAT_NONE;
}
xchat_printf (ph, "XSASL authenticating as %s\n", p->login);
len = strlen (p->login) * 2 + 2 + strlen (p->password);
buf = (char*) malloc (len + 1);
strcpy (buf, p->login);
strcpy (buf + strlen (p->login) + 1, p->login);
strcpy (buf + strlen (p->login) * 2 + 2, p->password);
enc = g_base64_encode ((unsigned char*) buf, len);
/* xchat_printf (ph, "AUTHENTICATE %s\}", enc); */
xchat_commandf (ph, "QUOTE AUTHENTICATE %s", enc);
free (enc);
free (buf);
return XCHAT_EAT_ALL;
}
return XCHAT_EAT_NONE;
}
static int
cap_cb (char *word[], char *word_eol[], void *userdata)
{
if (get_info ())
{
/* FIXME test sasl cap */
xchat_printf (ph, "XSASL info: %s\n", word_eol[1]);
xchat_commandf (ph, "QUOTE AUTHENTICATE PLAIN");
}
return XCHAT_EAT_ALL;
}
static int
sasl_cmd_cb (char *word[], char *word_eol[], void *userdata)
{
const char* login = word[2];
const char* password = word[3];
const char* network = word_eol[4];
if (!login || !password || !network || !*login || !*password || !*network)
{
xchat_printf (ph, "Usage: SASL <login> <password> <network>, enable SASL authentication for given network\n");
return XCHAT_EAT_ALL;
}
add_info (login, password, network);
xchat_printf (ph, "Enabled SASL authentication for the \"%s\" network\n", network);
return XCHAT_EAT_ALL;
}
static int
connect_cb (char *word[], void *userdata)
{
if (get_info ())
{
xchat_printf (ph, "XSASL enabled\n");
xchat_commandf (ph, "QUOTE CAP REQ :sasl");
}
return XCHAT_EAT_NONE;
}
int
xchat_plugin_init (xchat_plugin *plugin_handle, char **plugin_name, char **plugin_desc, char **plugin_version, char *arg)
{
/* we need to save this for use with any xchat_* functions */
ph = plugin_handle;
/* tell xchat our info */
*plugin_name = name;
*plugin_desc = desc;
*plugin_version = version;
xchat_hook_command (ph, "XSASL", XCHAT_PRI_NORM, sasl_cmd_cb, "Usage: SASL <login> <password> <network>, enable SASL authentication for given network", 0);
xchat_hook_print (ph, "Connected", XCHAT_PRI_NORM, connect_cb, NULL);
/* xchat_hook_print (ph, "Disconnected", XCHAT_PRI_NORM, disconnect_cb, NULL); */
xchat_hook_server (ph, "CAP", XCHAT_PRI_NORM, cap_cb, NULL);
xchat_hook_server (ph, "RAW LINE", XCHAT_PRI_NORM, server_cb, NULL);
xchat_hook_server (ph, "903", XCHAT_PRI_NORM, authend_cb, NULL);
xchat_hook_server (ph, "904", XCHAT_PRI_NORM, authend_cb, NULL);
xchat_hook_server (ph, "905", XCHAT_PRI_NORM, authend_cb, NULL);
xchat_hook_server (ph, "906", XCHAT_PRI_NORM, authend_cb, NULL);
xchat_hook_server (ph, "907", XCHAT_PRI_NORM, authend_cb, NULL);
xchat_printf (ph, "%s plugin loaded\n", name);
return 1;
}
int
xchat_plugin_deinit (void)
{
xchat_printf (ph, "%s plugin unloaded\n", name);
return 1;
}
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