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016b42baea
irssi/src/otr/otr-fe.c
Alexander Færøy 016b42baea Add OTR support. 
This patch adds support for the OTR protocol to irssi. This is an import
of the external irssi-otr project that we are now taking over
maintership for.

Major thanks to the original authors of Irssi-OTR: Uli Meis and David
Goulet. Thanks to the OTR community in #OTR on OFTC, thanks to everyone
who have helped testing the patches and submitted UI suggestions.
2018-02-26 23:32:57 +01:00

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/*
* Off-the-Record Messaging (OTR) module for the irssi IRC client
*
* Copyright (C) 2008 Uli Meis <a.sporto+bee@gmail.com>
* 2012 David Goulet <dgoulet@ev0ke.net>
* 2014 Alexander Færøy <ahf@0x90.dk>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program 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 General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301,USA
*/
#include "common.h"
#include "levels.h"
#include "printtext.h"
#include "commands.h"
#include "irc.h"
#include "irc-servers.h"
#include "irc-queries.h"
#include "statusbar-item.h"
#include "otr.h"
#include "otr-formats.h"
#include "key.h"
static void cmd_otr(const char *data, SERVER_REC *server, void *item)
{
if (*data == '\0')
data = "info"; // FIXME(ahf): Is this really what we want as default?
command_runsub("otr", data, server, item);
// We always redraw the OTR statusbar, just in case.
statusbar_items_redraw("otr");
}
static void cmd_otr_debug(const char *data)
{
otr_debug_toggle();
if (otr_debug_get())
printtext(NULL, NULL, MSGLEVEL_CRAP, "OTR debugging enabled");
else
printtext(NULL, NULL, MSGLEVEL_CRAP, "OTR debugging disabled");
}
static void cmd_otr_init(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
{
QUERY_REC *query;
char *target;
ConnContext *ctx;
g_return_if_fail(server != NULL);
if (!server->connected)
cmd_return_error(CMDERR_NOT_CONNECTED);
if (!IS_QUERY(item))
cmd_return_error(CMDERR_NOT_ENOUGH_PARAMS);
query = QUERY(item);
target = query->name;
ctx = otr_find_context(server, target, FALSE);
if (ctx && ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) {
printformat(server, target, MSGLEVEL_CRAP, TXT_OTR_SESSION_ALREADY_SECURED, ctx->accountname);
return;
}
printformat(server, target, MSGLEVEL_CRAP, TXT_OTR_SESSION_INITIATING);
/*
* Irssi does not handle well the HTML tag in the default OTR query message
* so just send the OTR tag instead. Contact me for a better fix! :)
*/
otr_send_message(server, target, "?OTRv23?");
}
static void cmd_otr_finish(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
{
QUERY_REC *query;
char *target;
g_return_if_fail(server != NULL);
if (!server->connected)
cmd_return_error(CMDERR_NOT_CONNECTED);
if (!IS_QUERY(item))
cmd_return_error(CMDERR_NOT_ENOUGH_PARAMS);
query = QUERY(item);
target = query->name;
otr_finish(server, target);
}
static void cmd_otr_trust(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
{
QUERY_REC *query;
char *target;
char *fingerprint, *human_fingerprint;
void *free_arg;
g_return_if_fail(server != NULL);
query = QUERY(item);
target = query ? query->name : NULL;
if (!cmd_get_params(data, &free_arg, 1 | PARAM_FLAG_GETREST, &fingerprint))
return;
// We fallback to target if fingerprint isn't specified.
if (*fingerprint == '\0' && target == NULL)
cmd_param_error(CMDERR_NOT_ENOUGH_PARAMS);
human_fingerprint = g_ascii_strup(fingerprint, -1);
otr_trust(server, target, human_fingerprint, user_state_global);
g_free(human_fingerprint);
cmd_params_free(free_arg);
}
static void cmd_otr_distrust(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
{
QUERY_REC *query;
char *target;
char *fingerprint, *human_fingerprint;
void *free_arg;
g_return_if_fail(server != NULL);
query = QUERY(item);
target = query ? query->name : NULL;
if (!cmd_get_params(data, &free_arg, 1 | PARAM_FLAG_GETREST, &fingerprint))
return;
// We fallback to target if fingerprint isn't specified.
if (*fingerprint == '\0' && target == NULL)
cmd_param_error(CMDERR_NOT_ENOUGH_PARAMS);
human_fingerprint = g_ascii_strup(fingerprint, -1);
otr_distrust(server, target, human_fingerprint, user_state_global);
g_free(human_fingerprint);
cmd_params_free(free_arg);
}
static void cmd_otr_forget(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
{
QUERY_REC *query;
char *target;
char *fingerprint, *human_fingerprint;
void *free_arg;
g_return_if_fail(server != NULL);
if (!cmd_get_params(data, &free_arg, 1 | PARAM_FLAG_GETREST, &fingerprint))
return;
query = QUERY(item);
target = query ? query->name : NULL;
// We fallback to target if fingerprint isn't specified.
if (*fingerprint == '\0' && target == NULL)
cmd_param_error(CMDERR_NOT_ENOUGH_PARAMS);
human_fingerprint = g_ascii_strup(fingerprint, -1);
otr_forget(server, target, human_fingerprint, user_state_global);
g_free(human_fingerprint);
cmd_params_free(free_arg);
}
static void cmd_otr_authabort(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
{
QUERY_REC *query;
char *target;
query = QUERY(item);
target = query ? query->name : NULL;
if (server == NULL || target == NULL)
cmd_return_error(CMDERR_NOT_ENOUGH_PARAMS);
otr_auth_abort(server, target);
}
static void cmd_otr_auth(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
{
QUERY_REC *query;
char *target;
char *secret;
void *free_arg;
if (!cmd_get_params(data, &free_arg, 1, &secret))
return;
query = QUERY(item);
target = query ? query->name : NULL;
if (server == NULL || target == NULL || *secret == '\0')
cmd_param_error(CMDERR_NOT_ENOUGH_PARAMS);
if (*secret == '\0')
cmd_param_error(CMDERR_NOT_ENOUGH_PARAMS);
otr_auth(server, target, NULL, secret);
cmd_params_free(free_arg);
}
static void cmd_otr_authq(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
{
QUERY_REC *query;
char *target;
char *question, *secret;
void *free_arg;
if (!cmd_get_params(data, &free_arg, 2, &question, &secret))
return;
query = QUERY(item);
target = query ? query->name : NULL;
if (server == NULL || target == NULL || *question == '\0' || *secret == '\0')
cmd_param_error(CMDERR_NOT_ENOUGH_PARAMS);
otr_auth(server, target, question, secret);
cmd_params_free(free_arg);
}
static void cmd_otr_genkey(const char *data)
{
char *account_name;
void *free_arg;
if (!cmd_get_params(data, &free_arg, 1, &account_name))
return;
if (*account_name == '\0')
cmd_param_error(CMDERR_NOT_ENOUGH_PARAMS);
key_gen_run(user_state_global, account_name);
cmd_params_free(free_arg);
}
static void cmd_otr_contexts(const char *data)
{
otr_contexts(user_state_global);
}
static void cmd_otr_info(const char *data)
{
gboolean empty = TRUE;
char ownfp[OTRL_PRIVKEY_FPRINT_HUMAN_LEN];
OtrlPrivKey *key;
for (key = user_state_global->otr_state->privkey_root; key != NULL; key = key->next) {
otrl_privkey_fingerprint(user_state_global->otr_state, ownfp, key->accountname, OTR_PROTOCOL_ID);
printformat(NULL, NULL, MSGLEVEL_CLIENTNOTICE, TXT_OTR_FP_NICK, key->accountname, ownfp);
empty = FALSE;
}
if (empty)
printformat(NULL, NULL, MSGLEVEL_CLIENTERROR, TXT_OTR_KEYS_UNAVAILABLE);
}
static void statusbar_otr(struct SBAR_ITEM_REC *item, int get_size_only)
{
WI_ITEM_REC *wi_item = active_win->active;
QUERY_REC *query = QUERY(wi_item);
enum otr_status_format format = TXT_OTR_MODULE_NAME;
if (query && query->server && query->server->connrec) {
format = otr_get_status_format(query->server, query->name);
}
statusbar_item_default_handler(item, get_size_only,
format ? fe_otr_formats[format].def : "", " ", FALSE);
}
void otr_fe_init(void)
{
theme_register(fe_otr_formats);
command_bind("otr", NULL, (SIGNAL_FUNC) cmd_otr);
command_bind("otr debug", NULL, (SIGNAL_FUNC) cmd_otr_debug);
command_bind("otr init", NULL, (SIGNAL_FUNC) cmd_otr_init);
command_bind("otr finish", NULL, (SIGNAL_FUNC) cmd_otr_finish);
command_bind("otr trust", NULL, (SIGNAL_FUNC) cmd_otr_trust);
command_bind("otr distrust", NULL, (SIGNAL_FUNC) cmd_otr_distrust);
command_bind("otr forget", NULL, (SIGNAL_FUNC) cmd_otr_forget);
command_bind("otr authabort", NULL, (SIGNAL_FUNC) cmd_otr_authabort);
command_bind("otr auth", NULL, (SIGNAL_FUNC) cmd_otr_auth);
command_bind("otr authq", NULL, (SIGNAL_FUNC) cmd_otr_authq);
command_bind("otr genkey", NULL, (SIGNAL_FUNC) cmd_otr_genkey);
command_bind("otr contexts", NULL, (SIGNAL_FUNC) cmd_otr_contexts);
command_bind("otr info", NULL, (SIGNAL_FUNC) cmd_otr_info);
statusbar_item_register("otr", NULL, statusbar_otr);
statusbar_items_redraw("window");
}
void otr_fe_deinit(void)
{
theme_unregister();
command_unbind("otr", (SIGNAL_FUNC) cmd_otr);
command_unbind("otr debug", (SIGNAL_FUNC) cmd_otr_debug);
command_unbind("otr init", (SIGNAL_FUNC) cmd_otr_init);
command_unbind("otr finish", (SIGNAL_FUNC) cmd_otr_finish);
command_unbind("otr trust", (SIGNAL_FUNC) cmd_otr_trust);
command_unbind("otr distrust", (SIGNAL_FUNC) cmd_otr_distrust);
command_unbind("otr forget", (SIGNAL_FUNC) cmd_otr_forget);
command_unbind("otr authabort", (SIGNAL_FUNC) cmd_otr_authabort);
command_unbind("otr auth", (SIGNAL_FUNC) cmd_otr_auth);
command_unbind("otr authq", (SIGNAL_FUNC) cmd_otr_authq);
command_unbind("otr genkey", (SIGNAL_FUNC) cmd_otr_genkey);
command_unbind("otr contexts", (SIGNAL_FUNC) cmd_otr_contexts);
command_unbind("otr info", (SIGNAL_FUNC) cmd_otr_info);
statusbar_item_unregister("otr");
}
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