mirror of
https://github.com/profanity-im/profanity.git
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321 lines
10 KiB
C
321 lines
10 KiB
C
/*
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* otrlibv4.c
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* vim: expandtab:ts=4:sts=4:sw=4
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*
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* Copyright (C) 2012 - 2019 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 <https://www.gnu.org/licenses/>.
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*
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* In addition, as a special exception, the copyright holders give permission to
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* link the code of portions of this program with the OpenSSL library under
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* certain conditions as described in each individual source file, and
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* distribute linked combinations including the two.
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*
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* You must obey the GNU General Public License in all respects for all of the
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* code used other than OpenSSL. If you modify file(s) with this exception, you
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* may extend this exception to your version of the file(s), but you are not
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* obligated to do so. If you do not wish to do so, delete this exception
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* statement from your version. If you delete this exception statement from all
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* source files in the program, then also delete it here.
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*
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*/
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#include "config.h"
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#include <libotr/proto.h>
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#include <libotr/privkey.h>
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#include <libotr/message.h>
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#include "log.h"
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#include "otr/otr.h"
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#include "otr/otrlib.h"
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#include "ui/ui.h"
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#include "ui/window_list.h"
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static GTimer* timer;
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static unsigned int current_interval;
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OtrlPolicy
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otrlib_policy(void)
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{
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return OTRL_POLICY_ALLOW_V1 | OTRL_POLICY_ALLOW_V2;
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}
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void
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otrlib_init_timer(void)
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{
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OtrlUserState user_state = otr_userstate();
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timer = g_timer_new();
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current_interval = otrl_message_poll_get_default_interval(user_state);
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}
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void
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otrlib_poll(void)
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{
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gdouble elapsed = g_timer_elapsed(timer, NULL);
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if (current_interval != 0 && elapsed > current_interval) {
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OtrlUserState user_state = otr_userstate();
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OtrlMessageAppOps* ops = otr_messageops();
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otrl_message_poll(user_state, ops, NULL);
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g_timer_start(timer);
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}
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}
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char*
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otrlib_start_query(void)
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{
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return "?OTR?v2? This user has requested an Off-the-Record private conversation. However, you do not have a plugin to support that. See http://otr.cypherpunks.ca/ for more information.";
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}
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static const char*
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cb_otr_error_message(void* opdata, ConnContext* context, OtrlErrorCode err_code)
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{
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switch (err_code) {
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case OTRL_ERRCODE_ENCRYPTION_ERROR:
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return strdup("OTR Error: occurred while encrypting a message");
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case OTRL_ERRCODE_MSG_NOT_IN_PRIVATE:
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return strdup("OTR Error: Sent encrypted message to somebody who is not in a mutual OTR session");
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case OTRL_ERRCODE_MSG_UNREADABLE:
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return strdup("OTR Error: sent an unreadable encrypted message");
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case OTRL_ERRCODE_MSG_MALFORMED:
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return strdup("OTR Error: message sent is malformed");
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default:
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return strdup("OTR Error: unknown");
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}
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}
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static void
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cb_otr_error_message_free(void* opdata, const char* err_msg)
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{
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free((char*)err_msg);
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}
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static void
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cb_timer_control(void* opdata, unsigned int interval)
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{
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current_interval = interval;
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}
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static void
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cb_handle_msg_event(void* opdata, OtrlMessageEvent msg_event,
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ConnContext* context, const char* message,
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gcry_error_t err)
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{
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GString* err_msg;
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switch (msg_event) {
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case OTRL_MSGEVENT_ENCRYPTION_REQUIRED:
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ui_handle_otr_error(context->username, "OTR: Policy requires encryption, but attempting to send an unencrypted message.");
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break;
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case OTRL_MSGEVENT_ENCRYPTION_ERROR:
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ui_handle_otr_error(context->username, "OTR: Error occurred while encrypting a message, message not sent.");
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break;
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case OTRL_MSGEVENT_CONNECTION_ENDED:
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ui_handle_otr_error(context->username, "OTR: Message not sent because contact has ended the private conversation.");
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break;
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case OTRL_MSGEVENT_SETUP_ERROR:
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ui_handle_otr_error(context->username, "OTR: A private conversation could not be set up.");
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break;
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case OTRL_MSGEVENT_MSG_REFLECTED:
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ui_handle_otr_error(context->username, "OTR: Received our own OTR message.");
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break;
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case OTRL_MSGEVENT_MSG_RESENT:
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ui_handle_otr_error(context->username, "OTR: The previous message was resent.");
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break;
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case OTRL_MSGEVENT_RCVDMSG_NOT_IN_PRIVATE:
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ui_handle_otr_error(context->username, "OTR: Received an encrypted message but no private connection established.");
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break;
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case OTRL_MSGEVENT_RCVDMSG_UNREADABLE:
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ui_handle_otr_error(context->username, "OTR: Cannot read the received message.");
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break;
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case OTRL_MSGEVENT_RCVDMSG_MALFORMED:
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ui_handle_otr_error(context->username, "OTR: The message received contains malformed data.");
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break;
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case OTRL_MSGEVENT_RCVDMSG_GENERAL_ERR:
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err_msg = g_string_new("OTR: Received error: ");
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g_string_append(err_msg, message);
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g_string_append(err_msg, ".");
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ui_handle_otr_error(context->username, err_msg->str);
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g_string_free(err_msg, TRUE);
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break;
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case OTRL_MSGEVENT_RCVDMSG_UNENCRYPTED:
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err_msg = g_string_new("OTR: Received an unencrypted message: ");
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g_string_append(err_msg, message);
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ui_handle_otr_error(context->username, err_msg->str);
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g_string_free(err_msg, TRUE);
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break;
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case OTRL_MSGEVENT_RCVDMSG_UNRECOGNIZED:
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ui_handle_otr_error(context->username, "OTR: Cannot recognize the type of message received.");
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break;
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case OTRL_MSGEVENT_RCVDMSG_FOR_OTHER_INSTANCE:
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ui_handle_otr_error(context->username, "OTR: Received and discarded a message intended for another instance.");
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break;
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default:
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break;
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}
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}
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static void
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cb_handle_smp_event(void* opdata, OtrlSMPEvent smp_event,
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ConnContext* context, unsigned short progress_percent,
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char* question)
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{
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NextExpectedSMP nextMsg = context->smstate->nextExpected;
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OtrlUserState user_state = otr_userstate();
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OtrlMessageAppOps* ops = otr_messageops();
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GHashTable* smp_initiators = otr_smpinitators();
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ProfChatWin* chatwin = wins_get_chat(context->username);
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switch (smp_event) {
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case OTRL_SMPEVENT_ASK_FOR_SECRET:
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if (chatwin) {
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chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_INIT, NULL);
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}
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g_hash_table_insert(smp_initiators, strdup(context->username), strdup(context->username));
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break;
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case OTRL_SMPEVENT_ASK_FOR_ANSWER:
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if (chatwin) {
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chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_INIT_Q, question);
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}
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break;
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case OTRL_SMPEVENT_SUCCESS:
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if (chatwin) {
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if (context->smstate->received_question == 0) {
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chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_SUCCESS, NULL);
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chatwin_otr_trust(chatwin);
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} else {
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chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_SUCCESS_Q, NULL);
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}
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}
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break;
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case OTRL_SMPEVENT_FAILURE:
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if (chatwin) {
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if (context->smstate->received_question == 0) {
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if (nextMsg == OTRL_SMP_EXPECT3) {
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chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_SENDER_FAIL, NULL);
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} else if (nextMsg == OTRL_SMP_EXPECT4) {
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chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_RECEIVER_FAIL, NULL);
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}
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chatwin_otr_untrust(chatwin);
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} else {
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chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_FAIL_Q, NULL);
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}
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}
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break;
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case OTRL_SMPEVENT_ERROR:
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otrl_message_abort_smp(user_state, ops, NULL, context);
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break;
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case OTRL_SMPEVENT_CHEATED:
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otrl_message_abort_smp(user_state, ops, NULL, context);
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break;
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case OTRL_SMPEVENT_ABORT:
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if (chatwin) {
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chatwin_otr_smp_event(chatwin, PROF_OTR_SMP_ABORT, NULL);
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chatwin_otr_untrust(chatwin);
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}
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break;
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case OTRL_SMPEVENT_IN_PROGRESS:
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break;
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default:
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break;
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}
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}
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void
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otrlib_init_ops(OtrlMessageAppOps* ops)
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{
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ops->otr_error_message = cb_otr_error_message;
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ops->otr_error_message_free = cb_otr_error_message_free;
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ops->handle_msg_event = cb_handle_msg_event;
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ops->handle_smp_event = cb_handle_smp_event;
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ops->timer_control = cb_timer_control;
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}
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ConnContext*
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otrlib_context_find(OtrlUserState user_state, const char* const recipient, char* jid)
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{
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return otrl_context_find(user_state, recipient, jid, "xmpp", OTRL_INSTAG_MASTER, 0, NULL, NULL, NULL);
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}
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void
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otrlib_end_session(OtrlUserState user_state, const char* const recipient, char* jid, OtrlMessageAppOps* ops)
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{
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ConnContext* context = otrl_context_find(user_state, recipient, jid, "xmpp",
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OTRL_INSTAG_MASTER, 0, NULL, NULL, NULL);
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if (context) {
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otrl_message_disconnect(user_state, ops, NULL, jid, "xmpp", recipient, 0);
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}
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}
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gcry_error_t
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otrlib_encrypt_message(OtrlUserState user_state, OtrlMessageAppOps* ops, char* jid, const char* const to,
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const char* const message, char** newmessage)
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{
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gcry_error_t err;
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err = otrl_message_sending(
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user_state,
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ops,
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NULL,
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jid,
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"xmpp",
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to,
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OTRL_INSTAG_MASTER,
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message,
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0,
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newmessage,
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OTRL_FRAGMENT_SEND_SKIP,
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NULL,
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NULL,
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NULL);
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return err;
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}
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int
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otrlib_decrypt_message(OtrlUserState user_state, OtrlMessageAppOps* ops, char* jid, const char* const from,
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const char* const message, char** decrypted, OtrlTLV** tlvs)
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{
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return otrl_message_receiving(
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user_state,
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ops,
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NULL,
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jid,
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"xmpp",
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from,
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message,
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decrypted,
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tlvs,
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NULL,
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NULL,
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NULL);
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}
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void
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otrlib_handle_tlvs(OtrlUserState user_state, OtrlMessageAppOps* ops, ConnContext* context, OtrlTLV* tlvs, GHashTable* smp_initiators)
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{
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}
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