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source: otr.c @ 0d8a9bb0

Last change on this file since 0d8a9bb0 was 3d365b4, checked in by dequis <dx@…>, at 2015-11-08T00:21:35Z
otr_filter_colors: Also remove \x02 (irc bold)
Property mode set to `100644`
File size: 59.4 KB

Rev	Line
[5ebff60]	1	/********************************************************************\
[e2b15bb]	2	* BitlBee -- An IRC to other IM-networks gateway *
	3	* *
[0e788f5]	4	* Copyright 2002-2012 Wilmer van der Gaast and others *
[e2b15bb]	5	\********************************************************************/
	6
	7	/*
	8	OTR support (cf. http://www.cypherpunks.ca/otr/)
[5ebff60]	9
[81265e0]	10	(c) 2008-2011,2013 Sven Moritz Hallberg <pesco@khjk.org>
	11	funded by stonedcoder.org
[5ebff60]	12
[e2b15bb]	13	files used to store OTR data:
	14	<configdir>/<nick>.otr_keys
	15	<configdir>/<nick>.otr_fprints
[e4752a6]	16	<configdir>/<nick>.otr_instags <- don't copy this one between hosts
[5ebff60]	17
[e2b15bb]	18	top-level todos: (search for TODO for more ;-))
	19	integrate otr_load/otr_save with existing storage backends
	20	per-account policy settings
	21	per-user policy settings
[e4752a6]	22	add a way to select recipient instance
[e2b15bb]	23	*/
	24
	25	/*
	26	This program is free software; you can redistribute it and/or modify
	27	it under the terms of the GNU General Public License as published by
	28	the Free Software Foundation; either version 2 of the License, or
	29	(at your option) any later version.
	30
	31	This program is distributed in the hope that it will be useful,
	32	but WITHOUT ANY WARRANTY; without even the implied warranty of
	33	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	34	GNU General Public License for more details.
	35
	36	You should have received a copy of the GNU General Public License with
	37	the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
[6f10697]	38	if not, write to the Free Software Foundation, Inc., 51 Franklin St.,
	39	Fifth Floor, Boston, MA 02110-1301 USA
[e2b15bb]	40	*/
	41
[764c7d1]	42	#include "bitlbee.h"
	43	#include "irc.h"
	44	#include "otr.h"
	45	#include <sys/types.h>
[27db433]	46	#include <sys/wait.h>
[764c7d1]	47	#include <unistd.h>
[dc9797f]	48	#include <assert.h>
[6738a67]	49	#include <signal.h>
[764c7d1]	50
	51
	52	/ OTR interface routines for the OtrlMessageAppOps struct: /
	53
	54	OtrlPolicy op_policy(void opdata, ConnContext context);
	55
	56	void op_create_privkey(void opdata, const char accountname, const char *protocol);
	57
	58	int op_is_logged_in(void opdata, const char accountname, const char *protocol,
[5ebff60]	59	const char *recipient);
[764c7d1]	60
	61	void op_inject_message(void opdata, const char accountname, const char *protocol,
[5ebff60]	62	const char recipient, const char message);
[764c7d1]	63
	64	void op_new_fingerprint(void opdata, OtrlUserState us, const char accountname,
[5ebff60]	65	const char protocol, const char username, unsigned char fingerprint[20]);
[764c7d1]	66
	67	void op_write_fingerprints(void *opdata);
	68
	69	void op_gone_secure(void opdata, ConnContext context);
	70
	71	void op_gone_insecure(void opdata, ConnContext context);
	72
	73	void op_still_secure(void opdata, ConnContext context, int is_reply);
	74
	75	void op_log_message(void opdata, const char message);
	76
[a13855a]	77	int op_max_message_size(void opdata, ConnContext context);
[764c7d1]	78
[a13855a]	79	const char op_account_name(void opdata, const char account, const char protocol);
[764c7d1]	80
[e65039a]	81	void op_create_instag(void opdata, const char account, const char *protocol);
	82
[5d2bc9d]	83	void op_convert_msg(void opdata, ConnContext ctx, OtrlConvertType typ,
[5ebff60]	84	char *dst, const char src);
[5d2bc9d]	85	void op_convert_free(void opdata, ConnContext ctx, char *msg);
	86
[352a6b0]	87	void op_handle_smp_event(void opdata, OtrlSMPEvent ev, ConnContext ctx,
[5ebff60]	88	unsigned short percent, char *question);
[764c7d1]	89
[090c9b7]	90	void op_handle_msg_event(void opdata, OtrlMessageEvent ev, ConnContext ctx,
[5ebff60]	91	const char *message, gcry_error_t err);
[090c9b7]	92
[6d9f0ba]	93	const char op_otr_error_message(void opdata, ConnContext *ctx,
[5ebff60]	94	OtrlErrorCode err_code);
[6d9f0ba]	95
[764c7d1]	96	/ otr sub-command handlers: /
	97
[8358691]	98	static void cmd_otr(irc_t irc, char *args);
[8521b02]	99	void cmd_otr_connect(irc_t irc, char *args);
	100	void cmd_otr_disconnect(irc_t irc, char *args);
[69ef042]	101	void cmd_otr_reconnect(irc_t irc, char *args);
[5a71d9c]	102	void cmd_otr_smp(irc_t irc, char *args);
[99a01b9]	103	void cmd_otr_smpq(irc_t irc, char *args);
[5a71d9c]	104	void cmd_otr_trust(irc_t irc, char *args);
[764c7d1]	105	void cmd_otr_info(irc_t irc, char *args);
[94e7eb3]	106	void cmd_otr_keygen(irc_t irc, char *args);
[c595308]	107	void cmd_otr_forget(irc_t irc, char *args);
[764c7d1]	108
	109	const command_t otr_commands[] = {
[8521b02]	110	{ "connect", 1, &cmd_otr_connect, 0 },
	111	{ "disconnect", 1, &cmd_otr_disconnect, 0 },
[69ef042]	112	{ "reconnect", 1, &cmd_otr_reconnect, 0 },
[8521b02]	113	{ "smp", 2, &cmd_otr_smp, 0 },
[99a01b9]	114	{ "smpq", 3, &cmd_otr_smpq, 0 },
[8521b02]	115	{ "trust", 6, &cmd_otr_trust, 0 },
	116	{ "info", 0, &cmd_otr_info, 0 },
[94e7eb3]	117	{ "keygen", 1, &cmd_otr_keygen, 0 },
[c595308]	118	{ "forget", 2, &cmd_otr_forget, 0 },
[764c7d1]	119	{ NULL }
	120	};
	121
[6738a67]	122	typedef struct {
	123	void *fst;
	124	void *snd;
[5ebff60]	125	} pair_t;
[6738a67]	126
[0c85c08]	127	static OtrlMessageAppOps otr_ops; /* collects interface functions required by OTR */
	128
[764c7d1]	129
	130	/ misc. helpers/subroutines: /
	131
[dc9797f]	132	/* check whether we are already generating a key for a given account */
	133	int keygen_in_progress(irc_t irc, const char handle, const char *protocol);
	134
[522a00f]	135	/* start background process to generate a (new) key for a given account */
[764c7d1]	136	void otr_keygen(irc_t irc, const char handle, const char *protocol);
[c595308]	137
[27db433]	138	/* main function for the forked keygen slave */
[12cc58b]	139	void keygen_child_main(OtrlUserState us, int infd, int outfd);
[27db433]	140
[522a00f]	141	/* mainloop handler for when a keygen finishes */
[764c7d1]	142	gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond);
[c595308]	143
[27db433]	144	/* copy the contents of file a to file b, overwriting it if it exists */
	145	void copyfile(const char a, const char b);
	146
	147	/* read one line of input from a stream, excluding trailing newline */
	148	void myfgets(char s, int size, FILE stream);
	149
[c595308]	150	/* some yes/no handlers */
[6738a67]	151	void yes_keygen(void *data);
	152	void yes_forget_fingerprint(void *data);
	153	void yes_forget_context(void *data);
	154	void yes_forget_key(void *data);
[764c7d1]	155
[22ec21d]	156	/* timeout handler that calls otrl_message_poll */
	157	gboolean ev_message_poll(gpointer data, gint fd, b_input_condition cond);
	158
[764c7d1]	159	/* helper to make sure accountname and protocol match the incoming "opdata" */
	160	struct im_connection check_imc(void opdata, const char *accountname,
[5ebff60]	161	const char *protocol);
[764c7d1]	162
[5a71d9c]	163	/* determine the nick for a given handle/protocol pair
	164	returns "handle/protocol" if not found */
[764c7d1]	165	const char peernick(irc_t irc, const char handle, const char protocol);
	166
[8521b02]	167	/* turn a hexadecimal digit into its numerical value */
	168	int hexval(char a);
	169
[ad2d8bc]	170	/* determine the irc_user_t for a given handle/protocol pair
[5a71d9c]	171	returns NULL if not found */
[ad2d8bc]	172	irc_user_t peeruser(irc_t irc, const char handle, const char protocol);
[5a71d9c]	173
[090c9b7]	174	/* show an otr-related message to the user */
	175	void display_otr_message(void opdata, ConnContext ctx, const char *fmt, ...);
	176
	177	/* write an otr-related message to the system log */
	178	void log_otr_message(void opdata, const char fmt, ...);
	179
[99a01b9]	180	/* combined handler for the 'otr smp' and 'otr smpq' commands */
[7c91392]	181	void otr_smp_or_smpq(irc_t irc, const char nick, const char *question,
[5ebff60]	182	const char *secret);
[99a01b9]	183
[a0c6fc5]	184	/* update flags within the irc_user structure to reflect OTR status of context */
	185	void otr_update_uflags(ConnContext context, irc_user_t u);
	186
[5a71d9c]	187	/* update op/voice flag of given user according to encryption state and settings
	188	returns 0 if neither op_buddies nor voice_buddies is set to "encrypted",
[e88fe7da]	189	i.e. msgstate should be announced separately */
[ad2d8bc]	190	int otr_update_modeflags(irc_t irc, irc_user_t u);
[5a71d9c]	191
[8521b02]	192	/* show general info about the OTR subsystem; called by 'otr info' */
	193	void show_general_otr_info(irc_t *irc);
	194
[2c81d15]	195	/* show info about a given OTR context and subcontexts/instances. bestctx
	196	may be either NULL or preferred destination context (this is hilighted
	197	in the output as being the target for a message) */
	198	void show_otr_context_info(irc_t irc, ConnContext ctx, ConnContext *bestctx);
[8521b02]	199
[764c7d1]	200	/* show the list of fingerprints associated with a given context */
	201	void show_fingerprints(irc_t irc, ConnContext ctx);
	202
[c595308]	203	/* find a fingerprint by prefix (given as any number of hex strings) */
	204	Fingerprint match_fingerprint(irc_t irc, ConnContext ctx, const char *args);
	205
[5f4eede]	206	/* find a private key by fingerprint prefix (given as any number of hex strings) */
	207	OtrlPrivKey match_privkey(irc_t irc, const char **args);
	208
[c7b94ef]	209	/* check whether a string is safe to use in a path component */
	210	int strsane(const char *s);
	211
[c239fff]	212	/* close the OTR connection with the given buddy */
	213	gboolean otr_disconnect_user(irc_t irc, irc_user_t u);
	214
	215	/* close all active OTR connections */
	216	void otr_disconnect_all(irc_t *irc);
	217
[86fd261]	218	/* modifies string in-place, replacing \x03 with '?',
	219	as a quick way to prevent remote users from messing with irc colors */
	220	static char otr_filter_colors(char msg);
	221
[0c85c08]	222	/* functions to be called for certain events */
	223	static const struct irc_plugin otr_plugin;
	224
[654112d4]	225	#define OTR_COLOR_TRUSTED "03" /* green */
	226	#define OTR_COLOR_UNTRUSTED "05" /* red */
	227
[764c7d1]	228	/* routines declared in otr.h: */
	229
[858ea01]	230	#ifdef OTR_BI
	231	#define init_plugin otr_init
	232	#endif
	233
	234	void init_plugin(void)
[764c7d1]	235	{
	236	OTRL_INIT;
[5ebff60]	237
[764c7d1]	238	/* fill global OtrlMessageAppOps */
[0c85c08]	239	otr_ops.policy = &op_policy;
	240	otr_ops.create_privkey = &op_create_privkey;
	241	otr_ops.is_logged_in = &op_is_logged_in;
	242	otr_ops.inject_message = &op_inject_message;
	243	otr_ops.update_context_list = NULL;
	244	otr_ops.new_fingerprint = &op_new_fingerprint;
	245	otr_ops.write_fingerprints = &op_write_fingerprints;
	246	otr_ops.gone_secure = &op_gone_secure;
	247	otr_ops.gone_insecure = &op_gone_insecure;
	248	otr_ops.still_secure = &op_still_secure;
	249	otr_ops.max_message_size = &op_max_message_size;
	250	otr_ops.account_name = &op_account_name;
	251	otr_ops.account_name_free = NULL;
[81265e0]	252
	253	/* stuff added with libotr 4.0.0 */
	254	otr_ops.received_symkey = NULL; /* we don't use the extra key */
[6d9f0ba]	255	otr_ops.otr_error_message = &op_otr_error_message;
[81265e0]	256	otr_ops.otr_error_message_free = NULL;
[6d9f0ba]	257	otr_ops.resent_msg_prefix = NULL; /* default: [resent] */
[81265e0]	258	otr_ops.resent_msg_prefix_free = NULL;
[352a6b0]	259	otr_ops.handle_smp_event = &op_handle_smp_event;
[090c9b7]	260	otr_ops.handle_msg_event = &op_handle_msg_event;
[e65039a]	261	otr_ops.create_instag = &op_create_instag;
[5d2bc9d]	262	otr_ops.convert_msg = &op_convert_msg;
	263	otr_ops.convert_free = &op_convert_free;
[5ebff60]	264	otr_ops.timer_control = NULL; /* we just poll */
	265
	266	root_command_add("otr", 1, cmd_otr, 0);
	267	register_irc_plugin(&otr_plugin);
[764c7d1]	268	}
	269
[0c85c08]	270	gboolean otr_irc_new(irc_t *irc)
[dc9797f]	271	{
[0c85c08]	272	set_t *s;
	273	GSList *l;
[5ebff60]	274
[0c85c08]	275	irc->otr = g_new0(otr_t, 1);
	276	irc->otr->us = otrl_userstate_create();
[5ebff60]	277
	278	s = set_add(&irc->b->set, "otr_color_encrypted", "true", set_eval_bool, irc);
	279
	280	s = set_add(&irc->b->set, "otr_policy", "opportunistic", set_eval_list, irc);
	281	l = g_slist_prepend(NULL, "never");
	282	l = g_slist_prepend(l, "opportunistic");
	283	l = g_slist_prepend(l, "manual");
	284	l = g_slist_prepend(l, "always");
[0c85c08]	285	s->eval_data = l;
[1082395]	286
[5ebff60]	287	s = set_add(&irc->b->set, "otr_does_html", "true", set_eval_bool, irc);
	288
[22ec21d]	289	/* regularly call otrl_message_poll */
	290	gint definterval = otrl_message_poll_get_default_interval(irc->otr->us);
[c347a12]	291	irc->otr->timer = b_timeout_add(definterval, ev_message_poll, irc->otr);
[22ec21d]	292
[0c85c08]	293	return TRUE;
[dc9797f]	294	}
	295
[0c85c08]	296	void otr_irc_free(irc_t *irc)
[dc9797f]	297	{
[098a75b]	298	set_t *s;
[0c85c08]	299	otr_t *otr = irc->otr;
[5ebff60]	300
[c239fff]	301	otr_disconnect_all(irc);
[c347a12]	302	b_event_remove(otr->timer);
[dc9797f]	303	otrl_userstate_free(otr->us);
[098a75b]	304
	305	s = set_find(&irc->b->set, "otr_policy");
	306	g_slist_free(s->eval_data);
	307
[5ebff60]	308	if (otr->keygen) {
[dc9797f]	309	kill(otr->keygen, SIGTERM);
	310	waitpid(otr->keygen, NULL, 0);
	311	/* TODO: remove stale keygen tempfiles */
	312	}
[5ebff60]	313	if (otr->to) {
[dc9797f]	314	fclose(otr->to);
[5ebff60]	315	}
	316	if (otr->from) {
[dc9797f]	317	fclose(otr->from);
[5ebff60]	318	}
	319	while (otr->todo) {
[dc9797f]	320	kg_t *p = otr->todo;
	321	otr->todo = p->next;
	322	g_free(p);
	323	}
	324	g_free(otr);
	325	}
	326
[764c7d1]	327	void otr_load(irc_t *irc)
	328	{
	329	char s[512];
	330	account_t *a;
	331	gcry_error_t e;
[522a00f]	332	gcry_error_t enoent = gcry_error_from_errno(ENOENT);
[5ebff60]	333	int kg = 0;
[764c7d1]	334
[5ebff60]	335	if (strsane(irc->user->nick)) {
[c7b94ef]	336	g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, irc->user->nick);
	337	e = otrl_privkey_read(irc->otr->us, s);
[5ebff60]	338	if (e && e != enoent) {
[c7b94ef]	339	irc_rootmsg(irc, "otr load: %s: %s", s, gcry_strerror(e));
	340	}
	341	g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->user->nick);
	342	e = otrl_privkey_read_fingerprints(irc->otr->us, s, NULL, NULL);
[5ebff60]	343	if (e && e != enoent) {
[c7b94ef]	344	irc_rootmsg(irc, "otr load: %s: %s", s, gcry_strerror(e));
	345	}
[e65039a]	346	g_snprintf(s, 511, "%s%s.otr_instags", global.conf->configdir, irc->user->nick);
	347	e = otrl_instag_read(irc->otr->us, s);
[5ebff60]	348	if (e && e != enoent) {
[e65039a]	349	irc_rootmsg(irc, "otr load: %s: %s", s, gcry_strerror(e));
	350	}
[764c7d1]	351	}
[5ebff60]	352
[764c7d1]	353	/* check for otr keys on all accounts */
[5ebff60]	354	for (a = irc->b->accounts; a; a = a->next) {
[3064ea4]	355	kg = otr_check_for_key(a) \|\| kg;
	356	}
[5ebff60]	357	if (kg) {
[e67e513]	358	irc_rootmsg(irc, "Notice: "
[5ebff60]	359	"The accounts above do not have OTR encryption keys associated with them, yet. "
	360	"These keys are now being generated in the background. "
	361	"You will be notified as they are completed. "
	362	"It is not necessary to wait; "
	363	"BitlBee can be used normally during key generation. "
	364	"You may safely ignore this message if you don't know what OTR is. ;)");
[764c7d1]	365	}
	366	}
	367
	368	void otr_save(irc_t *irc)
	369	{
	370	char s[512];
[3c80a9d]	371	gcry_error_t e;
[764c7d1]	372
[5ebff60]	373	if (strsane(irc->user->nick)) {
[c7b94ef]	374	g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->user->nick);
	375	e = otrl_privkey_write_fingerprints(irc->otr->us, s);
[5ebff60]	376	if (e) {
[c7b94ef]	377	irc_rootmsg(irc, "otr save: %s: %s", s, gcry_strerror(e));
	378	}
	379	chmod(s, 0600);
[3c80a9d]	380	}
[764c7d1]	381	}
	382
	383	void otr_remove(const char *nick)
	384	{
	385	char s[512];
[5ebff60]	386
	387	if (strsane(nick)) {
[c7b94ef]	388	g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, nick);
	389	unlink(s);
	390	g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, nick);
	391	unlink(s);
	392	}
[764c7d1]	393	}
	394
	395	void otr_rename(const char onick, const char nnick)
	396	{
	397	char s[512], t[512];
[5ebff60]	398
	399	if (strsane(nnick) && strsane(onick)) {
[c7b94ef]	400	g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, onick);
	401	g_snprintf(t, 511, "%s%s.otr_keys", global.conf->configdir, nnick);
[5ebff60]	402	rename(s, t);
[c7b94ef]	403	g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, onick);
	404	g_snprintf(t, 511, "%s%s.otr_fprints", global.conf->configdir, nnick);
[5ebff60]	405	rename(s, t);
[c7b94ef]	406	}
[764c7d1]	407	}
	408
[3064ea4]	409	int otr_check_for_key(account_t *a)
[764c7d1]	410	{
[ad2d8bc]	411	irc_t *irc = a->bee->ui_data;
[a13855a]	412	OtrlPrivKey *k;
[5ebff60]	413
[1dd3470]	414	/* don't do OTR on certain (not classic IM) protocols, e.g. twitter */
[5ebff60]	415	if (a->prpl->options & OPT_NOOTR) {
[1dd3470]	416	return 0;
	417	}
[5ebff60]	418
[dc9797f]	419	k = otrl_privkey_find(irc->otr->us, a->user, a->prpl->name);
[5ebff60]	420	if (k) {
[e67e513]	421	irc_rootmsg(irc, "otr: %s/%s ready", a->user, a->prpl->name);
[3064ea4]	422	return 0;
[5ebff60]	423	}
	424	if (keygen_in_progress(irc, a->user, a->prpl->name)) {
[e67e513]	425	irc_rootmsg(irc, "otr: keygen for %s/%s already in progress", a->user, a->prpl->name);
[3064ea4]	426	return 0;
[764c7d1]	427	} else {
[e67e513]	428	irc_rootmsg(irc, "otr: starting background keygen for %s/%s", a->user, a->prpl->name);
[764c7d1]	429	otr_keygen(irc, a->user, a->prpl->name);
[3064ea4]	430	return 1;
[764c7d1]	431	}
	432	}
	433
[934db064]	434	char otr_filter_msg_in(irc_user_t iu, char *msg, int flags)
[764c7d1]	435	{
	436	int ignore_msg;
	437	char *newmsg = NULL;
	438	OtrlTLV *tlvs = NULL;
[934db064]	439	irc_t *irc = iu->irc;
	440	struct im_connection *ic = iu->bu->ic;
[5ebff60]	441
[1dd3470]	442	/* don't do OTR on certain (not classic IM) protocols, e.g. twitter */
[09f7ec1]	443	if (ic->acc->prpl->options & OPT_NOOTR \|\|
	444	iu->bu->flags & BEE_USER_NOOTR) {
[934db064]	445	return msg;
[1dd3470]	446	}
[5ebff60]	447
[0c85c08]	448	ignore_msg = otrl_message_receiving(irc->otr->us, &otr_ops, ic,
[5ebff60]	449	ic->acc->user, ic->acc->prpl->name, iu->bu->handle, msg, &newmsg,
	450	&tlvs, NULL, NULL, NULL);
[764c7d1]	451
[098a75b]	452	if (tlvs) {
	453	otrl_tlv_free(tlvs);
	454	}
	455
[5ebff60]	456	if (ignore_msg) {
[764c7d1]	457	/* this was an internal OTR protocol message */
	458	return NULL;
[5ebff60]	459	} else if (!newmsg) {
[764c7d1]	460	/* this was a non-OTR message */
[86fd261]	461	return otr_filter_colors(msg);
[764c7d1]	462	} else {
[da44b08]	463	/* we're done with the original msg, which will be caller-freed. */
[5d2bc9d]	464	return newmsg;
[764c7d1]	465	}
	466	}
	467
[934db064]	468	char otr_filter_msg_out(irc_user_t iu, char *msg, int flags)
[5ebff60]	469	{
[5a71d9c]	470	int st;
	471	char *otrmsg = NULL;
	472	ConnContext *ctx = NULL;
[934db064]	473	irc_t *irc = iu->irc;
	474	struct im_connection *ic = iu->bu->ic;
[329f9fe]	475	otrl_instag_t instag = OTRL_INSTAG_BEST; // XXX?
[5ebff60]	476
[329f9fe]	477	/* NB: in libotr 4.0.0 OTRL_INSTAG_RECENT will cause a null-pointer deref
	478	* in otrl_message_sending with newly-added OTR contexts.
	479	*/
[1dd3470]	480
	481	/* don't do OTR on certain (not classic IM) protocols, e.g. twitter */
[09f7ec1]	482	if (ic->acc->prpl->options & OPT_NOOTR \|\|
	483	iu->bu->flags & BEE_USER_NOOTR) {
[934db064]	484	return msg;
[1dd3470]	485	}
[1082395]	486
[0c85c08]	487	st = otrl_message_sending(irc->otr->us, &otr_ops, ic,
[5ebff60]	488	ic->acc->user, ic->acc->prpl->name, iu->bu->handle, instag,
	489	msg, NULL, &otrmsg, OTRL_FRAGMENT_SEND_ALL_BUT_LAST, &ctx, NULL, NULL);
[367ea3c]	490
[5ebff60]	491	if (otrmsg && otrmsg != msg) {
[367ea3c]	492	/* libotr wants us to replace our message */
	493	/* NB: caller will free old msg */
[098a75b]	494	msg = st ? NULL : g_strdup(otrmsg);
[367ea3c]	495	otrl_message_free(otrmsg);
[764c7d1]	496	}
[5ebff60]	497
	498	if (st) {
[367ea3c]	499	irc_usernotice(iu, "otr: error handling outgoing message: %d", st);
[5ebff60]	500	msg = NULL; /* do not send plaintext! */
[cc17b76]	501	}
[367ea3c]	502
	503	return msg;
[764c7d1]	504	}
	505
[0c85c08]	506	static const struct irc_plugin otr_plugin =
	507	{
	508	otr_irc_new,
	509	otr_irc_free,
[934db064]	510	otr_filter_msg_out,
	511	otr_filter_msg_in,
[2dcaf9a]	512	otr_load,
	513	otr_save,
	514	otr_remove,
[0c85c08]	515	};
	516
[8358691]	517	static void cmd_otr(irc_t irc, char *args)
[764c7d1]	518	{
	519	const command_t *cmd;
[5ebff60]	520
	521	if (!args[0]) {
[764c7d1]	522	return;
[5ebff60]	523	}
	524
	525	if (!args[1]) {
[764c7d1]	526	return;
[5ebff60]	527	}
	528
	529	for (cmd = otr_commands; cmd->command; cmd++) {
	530	if (strcmp(cmd->command, args[1]) == 0) {
[764c7d1]	531	break;
[5ebff60]	532	}
[764c7d1]	533	}
[5ebff60]	534
	535	if (!cmd->command) {
[e67e513]	536	irc_rootmsg(irc, "%s: unknown subcommand \"%s\", see \x02help otr\x02",
[5ebff60]	537	args[0], args[1]);
[764c7d1]	538	return;
	539	}
[5ebff60]	540
	541	if (!args[cmd->required_parameters + 1]) {
[e67e513]	542	irc_rootmsg(irc, "%s %s: not enough arguments (%d req.)",
[5ebff60]	543	args[0], args[1], cmd->required_parameters);
[764c7d1]	544	return;
	545	}
[5ebff60]	546
	547	cmd->execute(irc, args + 1);
[764c7d1]	548	}
	549
	550
	551	/* OTR "MessageAppOps" callbacks for global.otr_ui: */
	552
	553	OtrlPolicy op_policy(void opdata, ConnContext context)
	554	{
[e2b15bb]	555	struct im_connection *ic = check_imc(opdata, context->accountname, context->protocol);
[ad2d8bc]	556	irc_t *irc = ic->bee->ui_data;
[e2b15bb]	557	const char *p;
[5ebff60]	558
[dc9797f]	559	/* policy override during keygen: if we're missing the key for context but are currently
	560	generating it, then that's as much as we can do. => temporarily return NEVER. */
[5ebff60]	561	if (keygen_in_progress(irc, context->accountname, context->protocol) &&
	562	!otrl_privkey_find(irc->otr->us, context->accountname, context->protocol)) {
[dc9797f]	563	return OTRL_POLICY_NEVER;
[5ebff60]	564	}
[e2b15bb]	565
[ad2d8bc]	566	p = set_getstr(&ic->bee->set, "otr_policy");
[5ebff60]	567	if (!strcmp(p, "never")) {
[e2b15bb]	568	return OTRL_POLICY_NEVER;
[5ebff60]	569	}
	570	if (!strcmp(p, "opportunistic")) {
[e2b15bb]	571	return OTRL_POLICY_OPPORTUNISTIC;
[5ebff60]	572	}
	573	if (!strcmp(p, "manual")) {
[e2b15bb]	574	return OTRL_POLICY_MANUAL;
[5ebff60]	575	}
	576	if (!strcmp(p, "always")) {
[e2b15bb]	577	return OTRL_POLICY_ALWAYS;
[5ebff60]	578	}
	579
[764c7d1]	580	return OTRL_POLICY_OPPORTUNISTIC;
	581	}
	582
	583	void op_create_privkey(void opdata, const char accountname,
[5ebff60]	584	const char *protocol)
[764c7d1]	585	{
	586	struct im_connection *ic = check_imc(opdata, accountname, protocol);
[ad2d8bc]	587	irc_t *irc = ic->bee->ui_data;
[5ebff60]	588
[dc9797f]	589	/* will fail silently if keygen already in progress */
[ad2d8bc]	590	otr_keygen(irc, accountname, protocol);
[764c7d1]	591	}
	592
	593	int op_is_logged_in(void opdata, const char accountname,
[5ebff60]	594	const char protocol, const char recipient)
[764c7d1]	595	{
	596	struct im_connection *ic = check_imc(opdata, accountname, protocol);
[ad2d8bc]	597	bee_user_t *bu;
[764c7d1]	598
[ad2d8bc]	599	/* lookup the irc_user_t for the given recipient */
	600	bu = bee_user_by_handle(ic->bee, ic, recipient);
[5ebff60]	601	if (bu) {
	602	if (bu->flags & BEE_USER_ONLINE) {
[764c7d1]	603	return 1;
[5ebff60]	604	} else {
[764c7d1]	605	return 0;
[5ebff60]	606	}
[764c7d1]	607	} else {
	608	return -1;
	609	}
	610	}
	611
	612	void op_inject_message(void opdata, const char accountname,
[5ebff60]	613	const char protocol, const char recipient, const char *message)
[764c7d1]	614	{
	615	struct im_connection *ic = check_imc(opdata, accountname, protocol);
[ad2d8bc]	616	irc_t *irc = ic->bee->ui_data;
[764c7d1]	617
	618	if (strcmp(accountname, recipient) == 0) {
	619	/* huh? injecting messages to myself? */
[e67e513]	620	irc_rootmsg(irc, "note to self: %s", message);
[764c7d1]	621	} else {
	622	/* need to drop some consts here :-( */
	623	/* TODO: get flags into op_inject_message?! */
[5ebff60]	624	ic->acc->prpl->buddy_msg(ic, (char ) recipient, (char ) message, 0);
[764c7d1]	625	/* ignoring return value :-/ */
	626	}
	627	}
	628
	629	void op_new_fingerprint(void *opdata, OtrlUserState us,
[5ebff60]	630	const char accountname, const char protocol,
	631	const char *username, unsigned char fingerprint[20])
[764c7d1]	632	{
	633	struct im_connection *ic = check_imc(opdata, accountname, protocol);
[ad2d8bc]	634	irc_t *irc = ic->bee->ui_data;
[409c2de]	635	irc_user_t *u = peeruser(irc, username, protocol);
[5ebff60]	636	char hunam[45]; /* anybody looking? ;-) */
	637
[764c7d1]	638	otrl_privkey_hash_to_human(hunam, fingerprint);
[5ebff60]	639	if (u) {
[409c2de]	640	irc_usernotice(u, "new fingerprint: %s", hunam);
	641	} else {
	642	/* this case shouldn't normally happen */
	643	irc_rootmsg(irc, "new fingerprint for %s/%s: %s",
[5ebff60]	644	username, protocol, hunam);
[409c2de]	645	}
[764c7d1]	646	}
	647
	648	void op_write_fingerprints(void *opdata)
	649	{
[5ebff60]	650	struct im_connection ic = (struct im_connection ) opdata;
[ad2d8bc]	651	irc_t *irc = ic->bee->ui_data;
[764c7d1]	652
[ad2d8bc]	653	otr_save(irc);
[764c7d1]	654	}
	655
	656	void op_gone_secure(void opdata, ConnContext context)
	657	{
	658	struct im_connection *ic =
[5ebff60]	659	check_imc(opdata, context->accountname, context->protocol);
[ad2d8bc]	660	irc_user_t *u;
	661	irc_t *irc = ic->bee->ui_data;
[764c7d1]	662
[ad2d8bc]	663	u = peeruser(irc, context->username, context->protocol);
[5ebff60]	664	if (!u) {
[5a71d9c]	665	log_message(LOGLVL_ERROR,
[5ebff60]	666	"BUG: otr.c: op_gone_secure: irc_user_t for %s/%s/%s not found!",
	667	context->username, context->protocol, context->accountname);
[5a71d9c]	668	return;
	669	}
[5ebff60]	670
[a0c6fc5]	671	otr_update_uflags(context, u);
[5ebff60]	672	if (!otr_update_modeflags(irc, u)) {
[f1cf01c]	673	char *trust = u->flags & IRC_USER_OTR_TRUSTED ? "trusted" : "untrusted!";
[409c2de]	674	irc_usernotice(u, "conversation is now off the record (%s)", trust);
[f1cf01c]	675	}
[764c7d1]	676	}
	677
	678	void op_gone_insecure(void opdata, ConnContext context)
	679	{
	680	struct im_connection *ic =
[5ebff60]	681	check_imc(opdata, context->accountname, context->protocol);
[ad2d8bc]	682	irc_t *irc = ic->bee->ui_data;
	683	irc_user_t *u;
[764c7d1]	684
[ad2d8bc]	685	u = peeruser(irc, context->username, context->protocol);
[5ebff60]	686	if (!u) {
[5a71d9c]	687	log_message(LOGLVL_ERROR,
[5ebff60]	688	"BUG: otr.c: op_gone_insecure: irc_user_t for %s/%s/%s not found!",
	689	context->username, context->protocol, context->accountname);
[5a71d9c]	690	return;
	691	}
[a0c6fc5]	692	otr_update_uflags(context, u);
[5ebff60]	693	if (!otr_update_modeflags(irc, u)) {
[409c2de]	694	irc_usernotice(u, "conversation is now in cleartext");
[5ebff60]	695	}
[764c7d1]	696	}
	697
	698	void op_still_secure(void opdata, ConnContext context, int is_reply)
	699	{
	700	struct im_connection *ic =
[5ebff60]	701	check_imc(opdata, context->accountname, context->protocol);
[ad2d8bc]	702	irc_t *irc = ic->bee->ui_data;
	703	irc_user_t *u;
[764c7d1]	704
[ad2d8bc]	705	u = peeruser(irc, context->username, context->protocol);
[5ebff60]	706	if (!u) {
[5a71d9c]	707	log_message(LOGLVL_ERROR,
[5ebff60]	708	"BUG: otr.c: op_still_secure: irc_user_t for %s/%s/%s not found!",
	709	context->username, context->protocol, context->accountname);
[5a71d9c]	710	return;
	711	}
[a0c6fc5]	712
	713	otr_update_uflags(context, u);
[5ebff60]	714	if (!otr_update_modeflags(irc, u)) {
[f1cf01c]	715	char *trust = u->flags & IRC_USER_OTR_TRUSTED ? "trusted" : "untrusted!";
[409c2de]	716	irc_usernotice(u, "otr connection has been refreshed (%s)", trust);
[f1cf01c]	717	}
[764c7d1]	718	}
	719
[a13855a]	720	int op_max_message_size(void opdata, ConnContext context)
	721	{
[5a71d9c]	722	struct im_connection *ic =
[5ebff60]	723	check_imc(opdata, context->accountname, context->protocol);
	724
[5a71d9c]	725	return ic->acc->prpl->mms;
[a13855a]	726	}
	727
	728	const char op_account_name(void opdata, const char account, const char protocol)
	729	{
[5ebff60]	730	struct im_connection ic = (struct im_connection ) opdata;
[ad2d8bc]	731	irc_t *irc = ic->bee->ui_data;
[a13855a]	732
[ad2d8bc]	733	return peernick(irc, account, protocol);
[a13855a]	734	}
	735
[e65039a]	736	void op_create_instag(void opdata, const char account, const char *protocol)
	737	{
	738	struct im_connection *ic =
[5ebff60]	739	check_imc(opdata, account, protocol);
[e65039a]	740	irc_t *irc = ic->bee->ui_data;
	741	gcry_error_t e;
	742	char s[512];
[5ebff60]	743
[e65039a]	744	g_snprintf(s, 511, "%s%s.otr_instags", global.conf->configdir,
[5ebff60]	745	irc->user->nick);
[e65039a]	746	e = otrl_instag_generate(irc->otr->us, s, account, protocol);
[5ebff60]	747	if (e) {
[e65039a]	748	irc_rootmsg(irc, "otr: %s/%s: otrl_instag_generate failed: %s",
[5ebff60]	749	account, protocol, gcry_strerror(e));
[e65039a]	750	}
	751	}
	752
[86fd261]	753	static char otr_filter_colors(char msg) {
	754	int i;
	755	for (i = 0; msg[i]; i++) {
[3d365b4]	756	if (msg[i] == '\x02' \|\| msg[i] == '\x03') {
[86fd261]	757	msg[i] = '?';
	758	}
	759	}
	760	return msg;
	761	}
	762
[654112d4]	763	/* returns newly allocated string */
	764	static char otr_color_encrypted(char msg, char *color, gboolean is_query) {
	765	char **lines;
	766	GString *out;
	767	int i;
	768
	769	lines = g_strsplit(msg, "\n", -1);
	770
	771	/* up to 4 extra chars per line (e.g., '\x03' + ("03"\|"05") + ' ') */
	772	out = g_string_sized_new(strlen(msg) + g_strv_length(lines) * 4);
	773
	774	for (i = 0; lines[i]; i++) {
	775	char *line = lines[i];
	776
	777	if (i != 0) {
	778	g_string_append_c(out, '\n');
	779
	780	} else if (is_query && g_strncasecmp(line, "/me ", 4) == 0) {
	781	/* in a query window, keep "/me " uncolored at the beginning */
	782	line += 4;
	783	g_string_append(out, "/me ");
	784	}
	785
	786	g_string_append_c(out, '\x03');
	787	g_string_append(out, color);
	788
	789	/* comma in first place could mess with the color code */
	790	if (line[0] == ',') {
	791	/* insert a space between color spec and message */
	792	g_string_append_c(out, ' ');
	793	}
	794
[86fd261]	795	g_string_append(out, otr_filter_colors(line));
[654112d4]	796	}
	797
	798	g_strfreev(lines);
	799
	800	return g_string_free(out, FALSE);
	801	}
	802
[5d2bc9d]	803	void op_convert_msg(void opdata, ConnContext ctx, OtrlConvertType typ,
[5ebff60]	804	char *dst, const char src)
[5d2bc9d]	805	{
	806	struct im_connection *ic =
[5ebff60]	807	check_imc(opdata, ctx->accountname, ctx->protocol);
[5d2bc9d]	808	irc_t *irc = ic->bee->ui_data;
	809	irc_user_t *iu = peeruser(irc, ctx->username, ctx->protocol);
	810
[5ebff60]	811	if (typ == OTRL_CONVERT_RECEIVING) {
[5d2bc9d]	812	char *msg = g_strdup(src);
	813
	814	/* HTML decoding */
[5ebff60]	815	if (set_getbool(&ic->bee->set, "otr_does_html") &&
	816	!(ic->flags & OPT_DOES_HTML) &&
	817	set_getbool(&ic->bee->set, "strip_html")) {
[5d2bc9d]	818	strip_html(msg);
[654112d4]	819
	820	/* msg is borrowed by dst (unless the next if decides to color it) /
[5d2bc9d]	821	*dst = msg;
	822	}
	823
	824	/* coloring */
[5ebff60]	825	if (set_getbool(&ic->bee->set, "otr_color_encrypted")) {
[5d2bc9d]	826	const char *trust = ctx->active_fingerprint->trust;
[654112d4]	827	char color = (trust && trust) ? OTR_COLOR_TRUSTED : OTR_COLOR_UNTRUSTED;
	828	gboolean is_query = (irc_user_msgdest(iu) == irc->user->nick);
[5d2bc9d]	829
[654112d4]	830	/* the return value of otr_color_encrypted() is borrowed by dst /
	831	*dst = otr_color_encrypted(msg, color, is_query);
[5d2bc9d]	832
[654112d4]	833	/* this branch doesn't need msg */
	834	g_free(msg);
[5d2bc9d]	835	}
	836	} else {
	837	/* HTML encoding */
	838	/* consider OTR plaintext to be HTML if otr_does_html is set */
[5ebff60]	839	if (ctx && ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED &&
	840	set_getbool(&ic->bee->set, "otr_does_html") &&
	841	(g_strncasecmp(src, "<html>", 6) != 0)) {
[5d2bc9d]	842	*dst = escape_html(src);
	843	}
	844	}
	845	}
	846
	847	void op_convert_free(void opdata, ConnContext ctx, char *msg)
	848	{
	849	g_free(msg);
	850	}
[5ebff60]	851
[352a6b0]	852	/* Socialist Millionaires' Protocol */
	853	void op_handle_smp_event(void opdata, OtrlSMPEvent ev, ConnContext ctx,
[5ebff60]	854	unsigned short percent, char *question)
[352a6b0]	855	{
	856	struct im_connection *ic =
[5ebff60]	857	check_imc(opdata, ctx->accountname, ctx->protocol);
[352a6b0]	858	irc_t *irc = ic->bee->ui_data;
	859	OtrlUserState us = irc->otr->us;
	860	irc_user_t *u = peeruser(irc, ctx->username, ctx->protocol);
	861
[5ebff60]	862	if (!u) {
	863	return;
	864	}
[352a6b0]	865
[5ebff60]	866	switch (ev) {
[352a6b0]	867	case OTRL_SMPEVENT_ASK_FOR_SECRET:
	868	irc_rootmsg(irc, "smp: initiated by %s"
[5ebff60]	869	" - respond with \x02otr smp %s <secret>\x02",
	870	u->nick, u->nick);
[352a6b0]	871	break;
	872	case OTRL_SMPEVENT_ASK_FOR_ANSWER:
	873	irc_rootmsg(irc, "smp: initiated by %s with question: \x02\"%s\"\x02", u->nick,
[5ebff60]	874	question);
[352a6b0]	875	irc_rootmsg(irc, "smp: respond with \x02otr smp %s <answer>\x02",
[5ebff60]	876	u->nick);
[352a6b0]	877	break;
	878	case OTRL_SMPEVENT_CHEATED:
	879	irc_rootmsg(irc, "smp %s: opponent violated protocol, aborting",
[5ebff60]	880	u->nick);
[352a6b0]	881	otrl_message_abort_smp(us, &otr_ops, u->bu->ic, ctx);
	882	otrl_sm_state_free(ctx->smstate);
	883	break;
	884	case OTRL_SMPEVENT_NONE:
	885	break;
	886	case OTRL_SMPEVENT_IN_PROGRESS:
	887	break;
	888	case OTRL_SMPEVENT_SUCCESS:
[5ebff60]	889	if (ctx->smstate->received_question) {
[352a6b0]	890	irc_rootmsg(irc, "smp %s: correct answer, you are trusted",
[5ebff60]	891	u->nick);
[352a6b0]	892	} else {
	893	irc_rootmsg(irc, "smp %s: secrets proved equal, fingerprint trusted",
[5ebff60]	894	u->nick);
[352a6b0]	895	}
	896	otrl_sm_state_free(ctx->smstate);
	897	break;
	898	case OTRL_SMPEVENT_FAILURE:
[5ebff60]	899	if (ctx->smstate->received_question) {
[352a6b0]	900	irc_rootmsg(irc, "smp %s: wrong answer, you are not trusted",
[5ebff60]	901	u->nick);
[352a6b0]	902	} else {
	903	irc_rootmsg(irc, "smp %s: secrets did not match, fingerprint not trusted",
[5ebff60]	904	u->nick);
[352a6b0]	905	}
	906	otrl_sm_state_free(ctx->smstate);
	907	break;
	908	case OTRL_SMPEVENT_ABORT:
[5ebff60]	909	irc_rootmsg(irc, "smp: received abort from %s", u->nick);
[352a6b0]	910	otrl_sm_state_free(ctx->smstate);
	911	break;
	912	case OTRL_SMPEVENT_ERROR:
	913	irc_rootmsg(irc, "smp %s: protocol error, aborting",
[5ebff60]	914	u->nick);
[352a6b0]	915	otrl_message_abort_smp(us, &otr_ops, u->bu->ic, ctx);
	916	otrl_sm_state_free(ctx->smstate);
	917	break;
	918	}
	919	}
	920
[090c9b7]	921	void op_handle_msg_event(void opdata, OtrlMessageEvent ev, ConnContext ctx,
[5ebff60]	922	const char *message, gcry_error_t err)
[090c9b7]	923	{
[5ebff60]	924	switch (ev) {
[090c9b7]	925	case OTRL_MSGEVENT_ENCRYPTION_REQUIRED:
	926	display_otr_message(opdata, ctx,
[5ebff60]	927	"policy requires encryption - message not sent");
[090c9b7]	928	break;
	929	case OTRL_MSGEVENT_ENCRYPTION_ERROR:
	930	display_otr_message(opdata, ctx,
[5ebff60]	931	"error during encryption - message not sent");
[090c9b7]	932	break;
	933	case OTRL_MSGEVENT_CONNECTION_ENDED:
	934	display_otr_message(opdata, ctx,
[5ebff60]	935	"other end has disconnected OTR - "
	936	"close connection or reconnect!");
[090c9b7]	937	break;
	938	case OTRL_MSGEVENT_SETUP_ERROR:
	939	display_otr_message(opdata, ctx,
[5ebff60]	940	"OTR connection failed: %s", gcry_strerror(err));
[090c9b7]	941	break;
	942	case OTRL_MSGEVENT_MSG_REFLECTED:
	943	display_otr_message(opdata, ctx,
[5ebff60]	944	"received our own OTR message (!?)");
[090c9b7]	945	break;
	946	case OTRL_MSGEVENT_MSG_RESENT:
	947	display_otr_message(opdata, ctx,
[5ebff60]	948	"the previous message was resent");
[090c9b7]	949	break;
	950	case OTRL_MSGEVENT_RCVDMSG_NOT_IN_PRIVATE:
	951	display_otr_message(opdata, ctx,
[5ebff60]	952	"unexpected encrypted message received");
[090c9b7]	953	break;
	954	case OTRL_MSGEVENT_RCVDMSG_UNREADABLE:
	955	display_otr_message(opdata, ctx,
[5ebff60]	956	"unreadable encrypted message received");
[090c9b7]	957	break;
	958	case OTRL_MSGEVENT_RCVDMSG_MALFORMED:
	959	display_otr_message(opdata, ctx,
[5ebff60]	960	"malformed OTR message received");
[090c9b7]	961	break;
[51f937e]	962	case OTRL_MSGEVENT_LOG_HEARTBEAT_RCVD:
[5ebff60]	963	if (global.conf->verbose) {
[51f937e]	964	log_otr_message(opdata, "%s/%s: heartbeat received",
[5ebff60]	965	ctx->accountname, ctx->protocol);
[51f937e]	966	}
	967	break;
	968	case OTRL_MSGEVENT_LOG_HEARTBEAT_SENT:
[5ebff60]	969	if (global.conf->verbose) {
[51f937e]	970	log_otr_message(opdata, "%s/%s: heartbeat sent",
[5ebff60]	971	ctx->accountname, ctx->protocol);
[51f937e]	972	}
	973	break;
[090c9b7]	974	case OTRL_MSGEVENT_RCVDMSG_GENERAL_ERR:
	975	display_otr_message(opdata, ctx,
[5ebff60]	976	"OTR error message received: %s", message);
[090c9b7]	977	break;
	978	case OTRL_MSGEVENT_RCVDMSG_UNENCRYPTED:
	979	display_otr_message(opdata, ctx,
[5ebff60]	980	"unencrypted message received: %s", message);
[090c9b7]	981	break;
	982	case OTRL_MSGEVENT_RCVDMSG_UNRECOGNIZED:
	983	display_otr_message(opdata, ctx,
[5ebff60]	984	"unrecognized OTR message received");
[090c9b7]	985	break;
[e4752a6]	986	case OTRL_MSGEVENT_RCVDMSG_FOR_OTHER_INSTANCE:
	987	display_otr_message(opdata, ctx,
[5ebff60]	988	"OTR message for a different instance received");
[e4752a6]	989	break;
[090c9b7]	990	default:
[51f937e]	991	/* shouldn't happen */
[090c9b7]	992	break;
	993	}
	994	}
	995
[6d9f0ba]	996	const char op_otr_error_message(void opdata, ConnContext *ctx,
[5ebff60]	997	OtrlErrorCode err_code)
[6d9f0ba]	998	{
[5ebff60]	999	switch (err_code) {
[6d9f0ba]	1000	case OTRL_ERRCODE_ENCRYPTION_ERROR:
	1001	return "i failed to encrypt a message";
	1002	case OTRL_ERRCODE_MSG_NOT_IN_PRIVATE:
	1003	return "you sent an encrypted message i didn't expect";
	1004	case OTRL_ERRCODE_MSG_UNREADABLE:
	1005	return "could not read encrypted message";
	1006	case OTRL_ERRCODE_MSG_MALFORMED:
	1007	return "you sent a malformed OTR message";
	1008	default:
	1009	return "i suffered an unexpected OTR error";
	1010	}
	1011	}
	1012
[5d2bc9d]	1013
[764c7d1]	1014
	1015	/* OTR sub-command handlers */
	1016
[69ef042]	1017	void cmd_otr_reconnect(irc_t irc, char *args)
	1018	{
	1019	cmd_otr_disconnect(irc, args);
	1020	cmd_otr_connect(irc, args);
	1021	}
	1022
[8521b02]	1023	void cmd_otr_disconnect(irc_t irc, char *args)
[764c7d1]	1024	{
[ad2d8bc]	1025	irc_user_t *u;
[764c7d1]	1026
[5ebff60]	1027	if (!strcmp("*", args[1])) {
[c239fff]	1028	otr_disconnect_all(irc);
	1029	irc_rootmsg(irc, "all conversations are now in cleartext");
	1030	} else {
	1031	u = irc_user_by_name(irc, args[1]);
[5ebff60]	1032	if (otr_disconnect_user(irc, u)) {
[c239fff]	1033	irc_usernotice(u, "conversation is now in cleartext");
[5ebff60]	1034	} else {
[c239fff]	1035	irc_rootmsg(irc, "%s: unknown user", args[1]);
[5ebff60]	1036	}
[c595308]	1037	}
[764c7d1]	1038	}
	1039
[8521b02]	1040	void cmd_otr_connect(irc_t irc, char *args)
[764c7d1]	1041	{
[ad2d8bc]	1042	irc_user_t *u;
[820a2a7]	1043	char msg, query = "?OTR?";
[764c7d1]	1044
[ad2d8bc]	1045	u = irc_user_by_name(irc, args[1]);
[5ebff60]	1046	if (!u \|\| !u->bu \|\| !u->bu->ic) {
[e67e513]	1047	irc_rootmsg(irc, "%s: unknown user", args[1]);
[764c7d1]	1048	return;
	1049	}
[5ebff60]	1050	if (!(u->bu->flags & BEE_USER_ONLINE)) {
[e67e513]	1051	irc_rootmsg(irc, "%s is offline", args[1]);
[764c7d1]	1052	return;
	1053	}
[5ebff60]	1054
[fbcb481]	1055	/* passing this through the filter so it goes through libotr which
	1056	* will replace the simple query string with a proper one */
[820a2a7]	1057	msg = otr_filter_msg_out(u, query, 0);
	1058
	1059	/* send the message */
[5ebff60]	1060	if (msg) {
[820a2a7]	1061	u->bu->ic->acc->prpl->buddy_msg(u->bu->ic, u->bu->handle, msg, 0); /* XXX flags? */
	1062	/* XXX error message? */
	1063
[5ebff60]	1064	if (msg != query) {
[820a2a7]	1065	g_free(msg);
[5ebff60]	1066	}
[820a2a7]	1067	}
[764c7d1]	1068	}
	1069
[5a71d9c]	1070	void cmd_otr_smp(irc_t irc, char *args)
[764c7d1]	1071	{
[5ebff60]	1072	otr_smp_or_smpq(irc, args[1], NULL, args[2]); /* no question */
[99a01b9]	1073	}
[764c7d1]	1074
[99a01b9]	1075	void cmd_otr_smpq(irc_t irc, char *args)
	1076	{
[7c91392]	1077	otr_smp_or_smpq(irc, args[1], args[2], args[3]);
[764c7d1]	1078	}
	1079
[5a71d9c]	1080	void cmd_otr_trust(irc_t irc, char *args)
	1081	{
[ad2d8bc]	1082	irc_user_t *u;
[5a71d9c]	1083	ConnContext *ctx;
	1084	unsigned char raw[20];
	1085	Fingerprint *fp;
[5ebff60]	1086	int i, j;
	1087
[ad2d8bc]	1088	u = irc_user_by_name(irc, args[1]);
[5ebff60]	1089	if (!u \|\| !u->bu \|\| !u->bu->ic) {
[e67e513]	1090	irc_rootmsg(irc, "%s: unknown user", args[1]);
[5a71d9c]	1091	return;
	1092	}
[5ebff60]	1093
[ad2d8bc]	1094	ctx = otrl_context_find(irc->otr->us, u->bu->handle,
[5ebff60]	1095	u->bu->ic->acc->user, u->bu->ic->acc->prpl->name, OTRL_INSTAG_MASTER, 0, NULL, NULL,
	1096	NULL);
	1097	if (!ctx) {
[e67e513]	1098	irc_rootmsg(irc, "%s: no otr context with user", args[1]);
[5a71d9c]	1099	return;
	1100	}
[5ebff60]	1101
[5a71d9c]	1102	/* convert given fingerprint to raw representation */
[5ebff60]	1103	for (i = 0; i < 5; i++) {
	1104	for (j = 0; j < 4; j++) {
	1105	char p = args[2 + i] + (2 j);
	1106	char *q = p + 1;
[5a71d9c]	1107	int x, y;
[5ebff60]	1108
	1109	if (!p \|\| !q) {
	1110	irc_rootmsg(irc, "failed: truncated fingerprint block %d", i + 1);
[5a71d9c]	1111	return;
	1112	}
[5ebff60]	1113
[5a71d9c]	1114	x = hexval(*p);
	1115	y = hexval(*q);
[5ebff60]	1116	if (x < 0) {
	1117	irc_rootmsg(irc, "failed: %d. hex digit of block %d out of range", 2 * j + 1, i + 1);
[5a71d9c]	1118	return;
	1119	}
[5ebff60]	1120	if (y < 0) {
	1121	irc_rootmsg(irc, "failed: %d. hex digit of block %d out of range", 2 * j + 2, i + 1);
[5a71d9c]	1122	return;
	1123	}
	1124
[5ebff60]	1125	raw[i * 4 + j] = x * 16 + y;
[5a71d9c]	1126	}
	1127	}
	1128	fp = otrl_context_find_fingerprint(ctx, raw, 0, NULL);
[5ebff60]	1129	if (!fp) {
[e67e513]	1130	irc_rootmsg(irc, "failed: no such fingerprint for %s", args[1]);
[5a71d9c]	1131	} else {
	1132	char *trust = args[7] ? args[7] : "affirmed";
	1133	otrl_context_set_trust(fp, trust);
[e67e513]	1134	irc_rootmsg(irc, "fingerprint match, trust set to \"%s\"", trust);
[5ebff60]	1135	if (u->flags & IRC_USER_OTR_ENCRYPTED) {
[ad2d8bc]	1136	u->flags \|= IRC_USER_OTR_TRUSTED;
[5ebff60]	1137	}
[5a71d9c]	1138	otr_update_modeflags(irc, u);
	1139	}
	1140	}
	1141
[8521b02]	1142	void cmd_otr_info(irc_t irc, char *args)
[764c7d1]	1143	{
[5ebff60]	1144	if (!args[1]) {
[8521b02]	1145	show_general_otr_info(irc);
[764c7d1]	1146	} else {
[8521b02]	1147	char *arg = g_strdup(args[1]);
[5ebff60]	1148	char myhandle, handle = NULL, *protocol;
[2c81d15]	1149	ConnContext bestctx = NULL, ctx;
[5ebff60]	1150
[8521b02]	1151	/* interpret arg as 'user/protocol/account' if possible */
	1152	protocol = strchr(arg, '/');
[9e64011]	1153	myhandle = NULL;
[5ebff60]	1154	if (protocol) {
[8521b02]	1155	*(protocol++) = '\0';
	1156	myhandle = strchr(protocol, '/');
[764c7d1]	1157	}
[5ebff60]	1158	if (protocol && myhandle) {
[8521b02]	1159	*(myhandle++) = '\0';
	1160	handle = arg;
[5ebff60]	1161	ctx = otrl_context_find(irc->otr->us, handle, myhandle, protocol, OTRL_INSTAG_MASTER, 0, NULL,
	1162	NULL, NULL);
	1163	if (!ctx) {
[e67e513]	1164	irc_rootmsg(irc, "no such context");
[8521b02]	1165	g_free(arg);
	1166	return;
	1167	}
[764c7d1]	1168	} else {
[ad2d8bc]	1169	irc_user_t *u = irc_user_by_name(irc, args[1]);
[5ebff60]	1170	if (!u \|\| !u->bu \|\| !u->bu->ic) {
[e67e513]	1171	irc_rootmsg(irc, "%s: unknown user", args[1]);
[8521b02]	1172	g_free(arg);
	1173	return;
[5a71d9c]	1174	}
[ad2d8bc]	1175	ctx = otrl_context_find(irc->otr->us, u->bu->handle, u->bu->ic->acc->user,
[5ebff60]	1176	u->bu->ic->acc->prpl->name, OTRL_INSTAG_MASTER, 0, NULL, NULL, NULL);
	1177	if (!ctx) {
[e67e513]	1178	irc_rootmsg(irc, "no otr context with %s", args[1]);
[8521b02]	1179	g_free(arg);
	1180	return;
	1181	}
[2c81d15]	1182	/* This does no harm if it returns NULL */
	1183	bestctx = otrl_context_find(irc->otr->us, u->bu->handle, u->bu->ic->acc->user,
	1184	u->bu->ic->acc->prpl->name, OTRL_INSTAG_BEST, 0, NULL, NULL, NULL);
[8521b02]	1185	}
[5ebff60]	1186
[8521b02]	1187	/* show how we resolved the (nick) argument, if we did */
[5ebff60]	1188	if (handle != arg) {
[2c81d15]	1189	irc_rootmsg(irc, "%s:", args[1]);
	1190	irc_rootmsg(irc, " they are: %s/%s", ctx->username, ctx->protocol);
	1191	irc_rootmsg(irc, " we are: %s/%s", ctx->accountname, ctx->protocol);
[764c7d1]	1192	}
[2c81d15]	1193	show_otr_context_info(irc, ctx, bestctx);
[8521b02]	1194	g_free(arg);
[764c7d1]	1195	}
	1196	}
	1197
[94e7eb3]	1198	void cmd_otr_keygen(irc_t irc, char *args)
	1199	{
	1200	account_t *a;
[5ebff60]	1201
[eabe6d4]	1202	if ((a = account_get(irc->b, args[1])) == NULL) {
	1203	irc_rootmsg(irc, "Could not find account `%s'.", args[1]);
[94e7eb3]	1204	return;
	1205	}
[5ebff60]	1206
	1207	if (keygen_in_progress(irc, a->user, a->prpl->name)) {
[eabe6d4]	1208	irc_rootmsg(irc, "keygen for account `%s' already in progress", a->tag);
[dc9797f]	1209	return;
	1210	}
[5ebff60]	1211
	1212	if (otrl_privkey_find(irc->otr->us, a->user, a->prpl->name)) {
[eabe6d4]	1213	char *s = g_strdup_printf("account `%s' already has a key, replace it?", a->tag);
[ad2d8bc]	1214	query_add(irc, NULL, s, yes_keygen, NULL, NULL, a);
[82e8fe8]	1215	g_free(s);
[94e7eb3]	1216	} else {
	1217	otr_keygen(irc, a->user, a->prpl->name);
	1218	}
	1219	}
	1220
[6738a67]	1221	void yes_forget_fingerprint(void *data)
[c595308]	1222	{
[5ebff60]	1223	pair_t p = (pair_t ) data;
	1224	irc_t irc = (irc_t ) p->fst;
	1225	Fingerprint fp = (Fingerprint ) p->snd;
[6738a67]	1226
	1227	g_free(p);
[5ebff60]	1228
	1229	if (fp == fp->context->active_fingerprint) {
[e67e513]	1230	irc_rootmsg(irc, "that fingerprint is active, terminate otr connection first");
[c595308]	1231	return;
	1232	}
[5ebff60]	1233
[c595308]	1234	otrl_context_forget_fingerprint(fp, 0);
	1235	}
	1236
[6738a67]	1237	void yes_forget_context(void *data)
[c595308]	1238	{
[5ebff60]	1239	pair_t p = (pair_t ) data;
	1240	irc_t irc = (irc_t ) p->fst;
	1241	ConnContext ctx = (ConnContext ) p->snd;
[6738a67]	1242
	1243	g_free(p);
[f93e01c]	1244
	1245	// XXX forget all contexts
[5ebff60]	1246
	1247	if (ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) {
[e67e513]	1248	irc_rootmsg(irc, "active otr connection with %s, terminate it first",
[5ebff60]	1249	peernick(irc, ctx->username, ctx->protocol));
[c595308]	1250	return;
	1251	}
[5ebff60]	1252
	1253	if (ctx->msgstate == OTRL_MSGSTATE_FINISHED) {
[c595308]	1254	otrl_context_force_plaintext(ctx);
[5ebff60]	1255	}
[c595308]	1256	otrl_context_forget(ctx);
	1257	}
	1258
[6738a67]	1259	void yes_forget_key(void *data)
[d0faf62]	1260	{
[5ebff60]	1261	OtrlPrivKey key = (OtrlPrivKey ) data;
	1262
[d0faf62]	1263	otrl_privkey_forget(key);
[37bff51]	1264	/* Hm, libotr doesn't seem to offer a function for explicitly /writing/
	1265	keyfiles. So the key will be back on the next load... */
	1266	/* TODO: Actually erase forgotten keys from storage? */
[d0faf62]	1267	}
	1268
[c595308]	1269	void cmd_otr_forget(irc_t irc, char *args)
	1270	{
[5ebff60]	1271	if (!strcmp(args[1], "fingerprint")) {
[ad2d8bc]	1272	irc_user_t *u;
[c595308]	1273	ConnContext *ctx;
	1274	Fingerprint *fp;
	1275	char human[54];
	1276	char *s;
[6738a67]	1277	pair_t *p;
[5ebff60]	1278
	1279	if (!args[3]) {
[e67e513]	1280	irc_rootmsg(irc, "otr %s %s: not enough arguments (2 req.)", args[0], args[1]);
[c595308]	1281	return;
	1282	}
[5ebff60]	1283
[e2b15bb]	1284	/* TODO: allow context specs ("user/proto/account") in 'otr forget fingerprint'? */
[ad2d8bc]	1285	u = irc_user_by_name(irc, args[2]);
[5ebff60]	1286	if (!u \|\| !u->bu \|\| !u->bu->ic) {
[e67e513]	1287	irc_rootmsg(irc, "%s: unknown user", args[2]);
[c595308]	1288	return;
	1289	}
[5ebff60]	1290
[ad2d8bc]	1291	ctx = otrl_context_find(irc->otr->us, u->bu->handle, u->bu->ic->acc->user,
[5ebff60]	1292	u->bu->ic->acc->prpl->name, OTRL_INSTAG_MASTER, 0, NULL, NULL, NULL);
	1293	if (!ctx) {
[e67e513]	1294	irc_rootmsg(irc, "no otr context with %s", args[2]);
[c595308]	1295	return;
	1296	}
[5ebff60]	1297
	1298	fp = match_fingerprint(irc, ctx, ((const char **) args) + 3);
	1299	if (!fp) {
[c595308]	1300	/* match_fingerprint does error messages */
	1301	return;
	1302	}
[5ebff60]	1303
	1304	if (fp == ctx->active_fingerprint) {
[e67e513]	1305	irc_rootmsg(irc, "that fingerprint is active, terminate otr connection first");
[c595308]	1306	return;
	1307	}
[5ebff60]	1308
[c595308]	1309	otrl_privkey_hash_to_human(human, fp->fingerprint);
	1310	s = g_strdup_printf("about to forget fingerprint %s, are you sure?", human);
[6738a67]	1311	p = g_malloc(sizeof(pair_t));
[5ebff60]	1312	if (!p) {
[6738a67]	1313	return;
[5ebff60]	1314	}
[6738a67]	1315	p->fst = irc;
	1316	p->snd = fp;
[ad2d8bc]	1317	query_add(irc, NULL, s, yes_forget_fingerprint, NULL, NULL, p);
[82e8fe8]	1318	g_free(s);
[5ebff60]	1319	} else if (!strcmp(args[1], "context")) {
[ad2d8bc]	1320	irc_user_t *u;
[c595308]	1321	ConnContext *ctx;
	1322	char *s;
[6738a67]	1323	pair_t *p;
[5ebff60]	1324
[e2b15bb]	1325	/* TODO: allow context specs ("user/proto/account") in 'otr forget contex'? */
[ad2d8bc]	1326	u = irc_user_by_name(irc, args[2]);
[5ebff60]	1327	if (!u \|\| !u->bu \|\| !u->bu->ic) {
[e67e513]	1328	irc_rootmsg(irc, "%s: unknown user", args[2]);
[c595308]	1329	return;
	1330	}
[5ebff60]	1331
[ad2d8bc]	1332	ctx = otrl_context_find(irc->otr->us, u->bu->handle, u->bu->ic->acc->user,
[5ebff60]	1333	u->bu->ic->acc->prpl->name, OTRL_INSTAG_MASTER, 0, NULL, NULL, NULL);
	1334	if (!ctx) {
[e67e513]	1335	irc_rootmsg(irc, "no otr context with %s", args[2]);
[c595308]	1336	return;
	1337	}
[5ebff60]	1338
	1339	if (ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) {
[e67e513]	1340	irc_rootmsg(irc, "active otr connection with %s, terminate it first", args[2]);
[c595308]	1341	return;
	1342	}
[5ebff60]	1343
[c595308]	1344	s = g_strdup_printf("about to forget otr data about %s, are you sure?", args[2]);
[6738a67]	1345	p = g_malloc(sizeof(pair_t));
[5ebff60]	1346	if (!p) {
[6738a67]	1347	return;
[5ebff60]	1348	}
[6738a67]	1349	p->fst = irc;
	1350	p->snd = ctx;
[ad2d8bc]	1351	query_add(irc, NULL, s, yes_forget_context, NULL, NULL, p);
[82e8fe8]	1352	g_free(s);
[5ebff60]	1353	} else if (!strcmp(args[1], "key")) {
[d0faf62]	1354	OtrlPrivKey *key;
	1355	char *s;
[5ebff60]	1356
	1357	key = match_privkey(irc, ((const char **) args) + 2);
	1358	if (!key) {
[d0faf62]	1359	/* match_privkey does error messages */
	1360	return;
	1361	}
[5ebff60]	1362
[d0faf62]	1363	s = g_strdup_printf("about to forget the private key for %s/%s, are you sure?",
[5ebff60]	1364	key->accountname, key->protocol);
[ad2d8bc]	1365	query_add(irc, NULL, s, yes_forget_key, NULL, NULL, key);
[d0faf62]	1366	g_free(s);
[5ebff60]	1367	} else {
[e67e513]	1368	irc_rootmsg(irc, "otr %s: unknown subcommand \"%s\", see \x02help otr forget\x02",
[5ebff60]	1369	args[0], args[1]);
[c595308]	1370	}
	1371	}
	1372
[764c7d1]	1373
	1374	/* local helpers / subroutines: */
	1375
[090c9b7]	1376	void log_otr_message(void opdata, const char fmt, ...)
	1377	{
	1378	va_list va;
	1379
	1380	va_start(va, fmt);
	1381	char *msg = g_strdup_vprintf(fmt, va);
	1382	va_end(va);
[5ebff60]	1383
[090c9b7]	1384	log_message(LOGLVL_INFO, "otr: %s", msg);
[098a75b]	1385
	1386	g_free(msg);
[090c9b7]	1387	}
	1388
	1389	void display_otr_message(void opdata, ConnContext ctx, const char *fmt, ...)
	1390	{
	1391	struct im_connection *ic =
[5ebff60]	1392	check_imc(opdata, ctx->accountname, ctx->protocol);
[090c9b7]	1393	irc_t *irc = ic->bee->ui_data;
	1394	irc_user_t *u = peeruser(irc, ctx->username, ctx->protocol);
	1395	va_list va;
	1396
	1397	va_start(va, fmt);
	1398	char *msg = g_strdup_vprintf(fmt, va);
	1399	va_end(va);
	1400
[5ebff60]	1401	if (u) {
[0a5d03c]	1402	/* just show this as a regular message */
	1403	irc_usermsg(u, "<<\002OTR\002>> %s", msg);
[090c9b7]	1404	} else {
	1405	irc_rootmsg(irc, "[otr] %s", msg);
	1406	}
	1407
	1408	g_free(msg);
	1409	}
	1410
[99a01b9]	1411	/* combined handler for the 'otr smp' and 'otr smpq' commands */
[7c91392]	1412	void otr_smp_or_smpq(irc_t irc, const char nick, const char *question,
[5ebff60]	1413	const char *secret)
[99a01b9]	1414	{
	1415	irc_user_t *u;
	1416	ConnContext *ctx;
[329f9fe]	1417	otrl_instag_t instag = OTRL_INSTAG_BEST; // XXX
[99a01b9]	1418
	1419	u = irc_user_by_name(irc, nick);
[5ebff60]	1420	if (!u \|\| !u->bu \|\| !u->bu->ic) {
[e67e513]	1421	irc_rootmsg(irc, "%s: unknown user", nick);
[99a01b9]	1422	return;
	1423	}
[5ebff60]	1424	if (!(u->bu->flags & BEE_USER_ONLINE)) {
[e67e513]	1425	irc_rootmsg(irc, "%s is offline", nick);
[99a01b9]	1426	return;
	1427	}
[5ebff60]	1428
[99a01b9]	1429	ctx = otrl_context_find(irc->otr->us, u->bu->handle,
[5ebff60]	1430	u->bu->ic->acc->user, u->bu->ic->acc->prpl->name, instag, 0, NULL, NULL, NULL);
	1431	if (!ctx \|\| ctx->msgstate != OTRL_MSGSTATE_ENCRYPTED) {
[e67e513]	1432	irc_rootmsg(irc, "smp: otr inactive with %s, try \x02otr connect"
[5ebff60]	1433	" %s\x02", nick, nick);
[99a01b9]	1434	return;
	1435	}
	1436
[5ebff60]	1437	if (ctx->smstate->nextExpected != OTRL_SMP_EXPECT1) {
[99a01b9]	1438	log_message(LOGLVL_INFO,
[5ebff60]	1439	"SMP already in phase %d, sending abort before reinitiating",
	1440	ctx->smstate->nextExpected + 1);
[99a01b9]	1441	otrl_message_abort_smp(irc->otr->us, &otr_ops, u->bu->ic, ctx);
	1442	otrl_sm_state_free(ctx->smstate);
	1443	}
[944d7a5]	1444
[5ebff60]	1445	if (question) {
[9cc653c]	1446	/* this was 'otr smpq', just initiate */
[e67e513]	1447	irc_rootmsg(irc, "smp: initiating with %s...", u->nick);
[9cc653c]	1448	otrl_message_initiate_smp_q(irc->otr->us, &otr_ops, u->bu->ic, ctx,
[5ebff60]	1449	question, (unsigned char *) secret, strlen(secret));
[9cc653c]	1450	/* smp is now in EXPECT2 */
	1451	} else {
	1452	/* this was 'otr smp', initiate or reply */
	1453	/* warning: the following assumes that smstates are cleared whenever an SMP
[5ebff60]	1454	is completed or aborted! */
	1455	if (ctx->smstate->secret == NULL) {
[e67e513]	1456	irc_rootmsg(irc, "smp: initiating with %s...", u->nick);
[99a01b9]	1457	otrl_message_initiate_smp(irc->otr->us, &otr_ops,
[5ebff60]	1458	u->bu->ic, ctx, (unsigned char *) secret, strlen(secret));
[9cc653c]	1459	/* smp is now in EXPECT2 */
	1460	} else {
	1461	/* if we're still in EXPECT1 but smstate is initialized, we must have
	1462	received the SMP1, so let's issue a response */
[e67e513]	1463	irc_rootmsg(irc, "smp: responding to %s...", u->nick);
[9cc653c]	1464	otrl_message_respond_smp(irc->otr->us, &otr_ops,
[5ebff60]	1465	u->bu->ic, ctx, (unsigned char *) secret, strlen(secret));
[9cc653c]	1466	/* smp is now in EXPECT3 */
[99a01b9]	1467	}
	1468	}
	1469	}
	1470
[22ec21d]	1471	/* timeout handler that calls otrl_message_poll */
	1472	gboolean ev_message_poll(gpointer data, gint fd, b_input_condition cond)
	1473	{
	1474	otr_t *otr = data;
	1475
[5ebff60]	1476	if (otr && otr->us) {
[c347a12]	1477	otrl_message_poll(otr->us, &otr_ops, NULL);
[5ebff60]	1478	}
[22ec21d]	1479
[5ebff60]	1480	return TRUE; /* cycle timer */
[22ec21d]	1481	}
	1482
[764c7d1]	1483	/* helper to assert that account and protocol names given to ops below always
	1484	match the im_connection passed through as opdata */
	1485	struct im_connection check_imc(void opdata, const char *accountname,
[5ebff60]	1486	const char *protocol)
[764c7d1]	1487	{
[5ebff60]	1488	struct im_connection ic = (struct im_connection ) opdata;
[764c7d1]	1489
[fa9478e]	1490	/* libotr 4.0.0 has a bug where it doesn't set opdata, so we catch
	1491	* that and try to find the desired connection in the global list. */
[5ebff60]	1492	if (!ic) {
[fa9478e]	1493	GSList *l;
[5ebff60]	1494	for (l = get_connections(); l; l = l->next) {
[fa9478e]	1495	ic = l->data;
[5ebff60]	1496	if (strcmp(accountname, ic->acc->user) == 0 &&
	1497	strcmp(protocol, ic->acc->prpl->name) == 0) {
[fa9478e]	1498	break;
[5ebff60]	1499	}
[fa9478e]	1500	}
	1501	assert(l != NULL); /* a match should always be found */
[5ebff60]	1502	if (!l) {
[37ed402]	1503	return NULL;
[5ebff60]	1504	}
[fa9478e]	1505	}
	1506
[764c7d1]	1507	if (strcmp(accountname, ic->acc->user) != 0) {
	1508	log_message(LOGLVL_WARNING,
[5ebff60]	1509	"otr: internal account name mismatch: '%s' vs '%s'",
	1510	accountname, ic->acc->user);
[764c7d1]	1511	}
	1512	if (strcmp(protocol, ic->acc->prpl->name) != 0) {
	1513	log_message(LOGLVL_WARNING,
[5ebff60]	1514	"otr: internal protocol name mismatch: '%s' vs '%s'",
	1515	protocol, ic->acc->prpl->name);
[764c7d1]	1516	}
[5ebff60]	1517
[764c7d1]	1518	return ic;
	1519	}
	1520
[ad2d8bc]	1521	irc_user_t peeruser(irc_t irc, const char handle, const char protocol)
[764c7d1]	1522	{
[ad2d8bc]	1523	GSList *l;
[5ebff60]	1524
	1525	for (l = irc->b->users; l; l = l->next) {
[ad2d8bc]	1526	bee_user_t *bu = l->data;
[764c7d1]	1527	struct prpl *prpl;
[5ebff60]	1528	if (!bu->ui_data \|\| !bu->ic \|\| !bu->handle) {
[8521b02]	1529	continue;
[5ebff60]	1530	}
[ad2d8bc]	1531	prpl = bu->ic->acc->prpl;
[5ebff60]	1532	if (strcmp(prpl->name, protocol) == 0
	1533	&& prpl->handle_cmp(bu->handle, handle) == 0) {
[ad2d8bc]	1534	return bu->ui_data;
[764c7d1]	1535	}
	1536	}
[5ebff60]	1537
[5a71d9c]	1538	return NULL;
	1539	}
	1540
[8521b02]	1541	int hexval(char a)
	1542	{
[5ebff60]	1543	int x = g_ascii_tolower(a);
	1544
	1545	if (x >= 'a' && x <= 'f') {
[8521b02]	1546	x = x - 'a' + 10;
[5ebff60]	1547	} else if (x >= '0' && x <= '9') {
[8521b02]	1548	x = x - '0';
[5ebff60]	1549	} else {
[8521b02]	1550	return -1;
[5ebff60]	1551	}
	1552
[8521b02]	1553	return x;
	1554	}
	1555
[5a71d9c]	1556	const char peernick(irc_t irc, const char handle, const char protocol)
	1557	{
	1558	static char fallback[512];
[5ebff60]	1559
[ad2d8bc]	1560	irc_user_t *u = peeruser(irc, handle, protocol);
[5ebff60]	1561
	1562	if (u) {
[5a71d9c]	1563	return u->nick;
	1564	} else {
	1565	g_snprintf(fallback, 511, "%s/%s", handle, protocol);
	1566	return fallback;
	1567	}
	1568	}
	1569
[a0c6fc5]	1570	void otr_update_uflags(ConnContext context, irc_user_t u)
	1571	{
	1572	const char *trust;
	1573
[5ebff60]	1574	if (context->active_fingerprint) {
[a0c6fc5]	1575	u->flags \|= IRC_USER_OTR_ENCRYPTED;
	1576
	1577	trust = context->active_fingerprint->trust;
[5ebff60]	1578	if (trust && trust[0]) {
[a0c6fc5]	1579	u->flags \|= IRC_USER_OTR_TRUSTED;
[5ebff60]	1580	} else {
[a0c6fc5]	1581	u->flags &= ~IRC_USER_OTR_TRUSTED;
[5ebff60]	1582	}
[a0c6fc5]	1583	} else {
	1584	u->flags &= ~IRC_USER_OTR_ENCRYPTED;
	1585	}
	1586	}
	1587
[ad2d8bc]	1588	int otr_update_modeflags(irc_t irc, irc_user_t u)
[5a71d9c]	1589	{
[1dc00fe]	1590	return 0;
[764c7d1]	1591	}
	1592
	1593	void show_fingerprints(irc_t irc, ConnContext ctx)
	1594	{
	1595	char human[45];
	1596	Fingerprint *fp;
	1597	const char *trust;
[5ebff60]	1598	int count = 0;
	1599
[2c81d15]	1600	/* Is this a subcontext? If so, only list the active fingerprint */
	1601	if (ctx->m_context != ctx) {
	1602	fp = ctx->active_fingerprint;
	1603	} else {
	1604	fp = &ctx->fingerprint_root;
	1605	}
	1606
	1607	while (fp) {
[5ebff60]	1608	if (!fp->fingerprint) {
[2c81d15]	1609	fp = fp->next;
[764c7d1]	1610	continue;
[5ebff60]	1611	}
[764c7d1]	1612	count++;
	1613	otrl_privkey_hash_to_human(human, fp->fingerprint);
[5ebff60]	1614	if (!fp->trust \|\| fp->trust[0] == '\0') {
	1615	trust = "untrusted";
[764c7d1]	1616	} else {
[5ebff60]	1617	trust = fp->trust;
[764c7d1]	1618	}
[5ebff60]	1619	if (fp == ctx->active_fingerprint) {
[2c81d15]	1620	irc_rootmsg(irc, " \x02%s (%s)\x02", human, trust);
[764c7d1]	1621	} else {
[2c81d15]	1622	irc_rootmsg(irc, " %s (%s)", human, trust);
[764c7d1]	1623	}
[2c81d15]	1624
	1625	/* Break if this is a subcontext - we only print active fp */
	1626	if (ctx->m_context != ctx) {
	1627	break;
	1628	}
	1629	fp = fp->next;
[764c7d1]	1630	}
[5ebff60]	1631	if (count == 0) {
[2c81d15]	1632	irc_rootmsg(irc, " (none)");
[5ebff60]	1633	}
[8521b02]	1634	}
	1635
[c595308]	1636	Fingerprint match_fingerprint(irc_t irc, ConnContext ctx, const char *args)
	1637	{
	1638	Fingerprint fp, fp2;
	1639	char human[45];
	1640	char prefix[45], *p;
	1641	int n;
[5ebff60]	1642	int i, j;
	1643
[c595308]	1644	/* assemble the args into a prefix in standard "human" form */
[5ebff60]	1645	n = 0;
	1646	p = prefix;
	1647	for (i = 0; args[i]; i++) {
	1648	for (j = 0; args[i][j]; j++) {
[6b13103]	1649	char c = g_ascii_toupper(args[i][j]);
[5ebff60]	1650
	1651	if (n >= 40) {
[e67e513]	1652	irc_rootmsg(irc, "too many fingerprint digits given, expected at most 40");
[c595308]	1653	return NULL;
	1654	}
[5ebff60]	1655
	1656	if ((c >= 'A' && c <= 'F') \|\| (c >= '0' && c <= '9')) {
[c595308]	1657	*(p++) = c;
	1658	} else {
[5ebff60]	1659	irc_rootmsg(irc, "invalid hex digit '%c' in block %d", args[i][j], i + 1);
[c595308]	1660	return NULL;
	1661	}
[5ebff60]	1662
[c595308]	1663	n++;
[5ebff60]	1664	if (n % 8 == 0) {
[c595308]	1665	*(p++) = ' ';
[5ebff60]	1666	}
[c595308]	1667	}
	1668	}
	1669	*p = '\0';
[5ebff60]	1670
[c595308]	1671	/* find first fingerprint with the given prefix */
	1672	n = strlen(prefix);
[5ebff60]	1673	for (fp = &ctx->fingerprint_root; fp; fp = fp->next) {
	1674	if (!fp->fingerprint) {
[c595308]	1675	continue;
[5ebff60]	1676	}
[c595308]	1677	otrl_privkey_hash_to_human(human, fp->fingerprint);
[5ebff60]	1678	if (!strncmp(prefix, human, n)) {
[c595308]	1679	break;
[5ebff60]	1680	}
[c595308]	1681	}
[5ebff60]	1682	if (!fp) {
[e67e513]	1683	irc_rootmsg(irc, "%s: no match", prefix);
[c595308]	1684	return NULL;
	1685	}
[5ebff60]	1686
[c595308]	1687	/* make sure the match, if any, is unique */
[5ebff60]	1688	for (fp2 = fp->next; fp2; fp2 = fp2->next) {
	1689	if (!fp2->fingerprint) {
[c595308]	1690	continue;
[5ebff60]	1691	}
[c595308]	1692	otrl_privkey_hash_to_human(human, fp2->fingerprint);
[5ebff60]	1693	if (!strncmp(prefix, human, n)) {
[c595308]	1694	break;
[5ebff60]	1695	}
[c595308]	1696	}
[5ebff60]	1697	if (fp2) {
[e67e513]	1698	irc_rootmsg(irc, "%s: multiple matches", prefix);
[c595308]	1699	return NULL;
	1700	}
[5ebff60]	1701
[c595308]	1702	return fp;
	1703	}
	1704
[5f4eede]	1705	OtrlPrivKey match_privkey(irc_t irc, const char **args)
	1706	{
	1707	OtrlPrivKey k, k2;
	1708	char human[45];
	1709	char prefix[45], *p;
	1710	int n;
[5ebff60]	1711	int i, j;
	1712
[5f4eede]	1713	/* assemble the args into a prefix in standard "human" form */
[5ebff60]	1714	n = 0;
	1715	p = prefix;
	1716	for (i = 0; args[i]; i++) {
	1717	for (j = 0; args[i][j]; j++) {
[6b13103]	1718	char c = g_ascii_toupper(args[i][j]);
[5ebff60]	1719
	1720	if (n >= 40) {
[e67e513]	1721	irc_rootmsg(irc, "too many fingerprint digits given, expected at most 40");
[5f4eede]	1722	return NULL;
	1723	}
[5ebff60]	1724
	1725	if ((c >= 'A' && c <= 'F') \|\| (c >= '0' && c <= '9')) {
[5f4eede]	1726	*(p++) = c;
	1727	} else {
[5ebff60]	1728	irc_rootmsg(irc, "invalid hex digit '%c' in block %d", args[i][j], i + 1);
[5f4eede]	1729	return NULL;
	1730	}
[5ebff60]	1731
[5f4eede]	1732	n++;
[5ebff60]	1733	if (n % 8 == 0) {
[5f4eede]	1734	*(p++) = ' ';
[5ebff60]	1735	}
[5f4eede]	1736	}
	1737	}
	1738	*p = '\0';
[5ebff60]	1739
[0b1ae59]	1740	/* remove trailing whitespace */
	1741	g_strchomp(prefix);
	1742
[5f4eede]	1743	/* find first key which matches the given prefix */
	1744	n = strlen(prefix);
[5ebff60]	1745	for (k = irc->otr->us->privkey_root; k; k = k->next) {
[dc9797f]	1746	p = otrl_privkey_fingerprint(irc->otr->us, human, k->accountname, k->protocol);
[5ebff60]	1747	if (!p) { /* gah! :-P */
[5f4eede]	1748	continue;
[5ebff60]	1749	}
	1750	if (!strncmp(prefix, human, n)) {
[5f4eede]	1751	break;
[5ebff60]	1752	}
[5f4eede]	1753	}
[5ebff60]	1754	if (!k) {
[e67e513]	1755	irc_rootmsg(irc, "%s: no match", prefix);
[5f4eede]	1756	return NULL;
	1757	}
[5ebff60]	1758
[5f4eede]	1759	/* make sure the match, if any, is unique */
[5ebff60]	1760	for (k2 = k->next; k2; k2 = k2->next) {
[dc9797f]	1761	p = otrl_privkey_fingerprint(irc->otr->us, human, k2->accountname, k2->protocol);
[5ebff60]	1762	if (!p) { /* gah! :-P */
[5f4eede]	1763	continue;
[5ebff60]	1764	}
	1765	if (!strncmp(prefix, human, n)) {
[5f4eede]	1766	break;
[5ebff60]	1767	}
[5f4eede]	1768	}
[5ebff60]	1769	if (k2) {
[e67e513]	1770	irc_rootmsg(irc, "%s: multiple matches", prefix);
[5f4eede]	1771	return NULL;
	1772	}
[5ebff60]	1773
[5f4eede]	1774	return k;
	1775	}
	1776
[8521b02]	1777	void show_general_otr_info(irc_t *irc)
	1778	{
	1779	ConnContext *ctx;
	1780	OtrlPrivKey *key;
	1781	char human[45];
[3064ea4]	1782	kg_t *kg;
[8521b02]	1783
[3064ea4]	1784	/* list all privkeys (including ones being generated) */
[e67e513]	1785	irc_rootmsg(irc, "\x1fprivate keys:\x1f");
[5ebff60]	1786	for (key = irc->otr->us->privkey_root; key; key = key->next) {
[8521b02]	1787	const char *hash;
[5ebff60]	1788
	1789	switch (key->pubkey_type) {
[8521b02]	1790	case OTRL_PUBKEY_TYPE_DSA:
[e67e513]	1791	irc_rootmsg(irc, " %s/%s - DSA", key->accountname, key->protocol);
[8521b02]	1792	break;
	1793	default:
[e67e513]	1794	irc_rootmsg(irc, " %s/%s - type %d", key->accountname, key->protocol,
[5ebff60]	1795	key->pubkey_type);
[8521b02]	1796	}
	1797
	1798	/* No, it doesn't make much sense to search for the privkey again by
	1799	account/protocol, but libotr currently doesn't provide a direct routine
	1800	for hashing a given 'OtrlPrivKey'... */
[dc9797f]	1801	hash = otrl_privkey_fingerprint(irc->otr->us, human, key->accountname, key->protocol);
[5ebff60]	1802	if (hash) { /* should always succeed */
[e67e513]	1803	irc_rootmsg(irc, " %s", human);
[5ebff60]	1804	}
[8521b02]	1805	}
[5ebff60]	1806	if (irc->otr->sent_accountname) {
[e67e513]	1807	irc_rootmsg(irc, " %s/%s - DSA", irc->otr->sent_accountname,
[5ebff60]	1808	irc->otr->sent_protocol);
[e67e513]	1809	irc_rootmsg(irc, " (being generated)");
[1221ef0]	1810	}
[5ebff60]	1811	for (kg = irc->otr->todo; kg; kg = kg->next) {
[e67e513]	1812	irc_rootmsg(irc, " %s/%s - DSA", kg->accountname, kg->protocol);
	1813	irc_rootmsg(irc, " (queued)");
[3064ea4]	1814	}
[5ebff60]	1815	if (key == irc->otr->us->privkey_root &&
	1816	!irc->otr->sent_accountname &&
	1817	kg == irc->otr->todo) {
[e67e513]	1818	irc_rootmsg(irc, " (none)");
[5ebff60]	1819	}
[8521b02]	1820
	1821	/* list all contexts */
[e4752a6]	1822	/* XXX remove this, or split off as its own command */
[e67e513]	1823	irc_rootmsg(irc, "%s", "");
	1824	irc_rootmsg(irc, "\x1f" "connection contexts:\x1f (bold=currently encrypted)");
[2c81d15]	1825
	1826	ctx = irc->otr->us->context_root;
	1827	while (ctx) {
	1828	ConnContext *subctx;
[ad2d8bc]	1829	irc_user_t *u;
[8521b02]	1830	char *userstring;
[2c81d15]	1831	char encrypted = 0;
[5ebff60]	1832
[8521b02]	1833	u = peeruser(irc, ctx->username, ctx->protocol);
[5ebff60]	1834	if (u) {
[8521b02]	1835	userstring = g_strdup_printf("%s/%s/%s (%s)",
[5ebff60]	1836	ctx->username, ctx->protocol, ctx->accountname, u->nick);
	1837	} else {
[8521b02]	1838	userstring = g_strdup_printf("%s/%s/%s",
[5ebff60]	1839	ctx->username, ctx->protocol, ctx->accountname);
	1840	}
	1841
[2c81d15]	1842	subctx = ctx;
	1843	while (subctx && subctx->m_context == ctx) {
	1844	if (subctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) {
	1845	encrypted = 1;
	1846	}
	1847	subctx = subctx->next;
	1848	}
	1849
	1850	if(encrypted) {
[e67e513]	1851	irc_rootmsg(irc, " \x02%s\x02", userstring);
[8521b02]	1852	} else {
[e67e513]	1853	irc_rootmsg(irc, " %s", userstring);
[8521b02]	1854	}
[5ebff60]	1855
[2c81d15]	1856	/* Skip subcontexts/instances from output */
	1857	ctx = subctx;
	1858
[8521b02]	1859	g_free(userstring);
	1860	}
[2c81d15]	1861
[5ebff60]	1862	if (ctx == irc->otr->us->context_root) {
[e67e513]	1863	irc_rootmsg(irc, " (none)");
[5ebff60]	1864	}
[8521b02]	1865	}
	1866
[2c81d15]	1867	void show_otr_context_info(irc_t irc, ConnContext ctx, ConnContext *bestctx)
[8521b02]	1868	{
[2c81d15]	1869	ConnContext *subctx;
	1870	int instcount = 0;
	1871
	1872	subctx = ctx;
	1873	while (subctx && subctx->m_context == ctx) {
	1874	if (subctx->m_context == subctx) {
	1875	if (subctx == bestctx) {
	1876	irc_rootmsg(irc, " \x02master context (target):\x02");
	1877	} else {
	1878	irc_rootmsg(irc, " master context:");
	1879	}
	1880	irc_rootmsg(irc, " known fingerprints (bold = active for v1 or v2):");
	1881	} else {
	1882	if (subctx == bestctx) {
	1883	irc_rootmsg(irc, " \x02instance %d (target):\x02", instcount);
	1884	} else {
	1885	irc_rootmsg(irc, " instance %d:", instcount);
	1886	}
	1887	irc_rootmsg(irc, " active fingerprint:");
	1888	instcount++;
	1889	}
[f93e01c]	1890
[2c81d15]	1891	show_fingerprints(irc, subctx);
[8521b02]	1892
[2c81d15]	1893	switch (subctx->msgstate) {
	1894	case OTRL_MSGSTATE_PLAINTEXT:
	1895	irc_rootmsg(irc, " connection state: cleartext");
	1896	break;
	1897	case OTRL_MSGSTATE_ENCRYPTED:
	1898	irc_rootmsg(irc, " connection state: encrypted (v%d)", subctx->protocol_version);
	1899	break;
	1900	case OTRL_MSGSTATE_FINISHED:
	1901	irc_rootmsg(irc, " connection state: shut down");
	1902	break;
	1903	default:
	1904	irc_rootmsg(irc, " connection state: %d", subctx->msgstate);
	1905	}
[8521b02]	1906
[2c81d15]	1907	subctx = subctx->next;
	1908	}
[764c7d1]	1909	}
	1910
[dc9797f]	1911	int keygen_in_progress(irc_t irc, const char handle, const char *protocol)
	1912	{
	1913	kg_t *kg;
[5ebff60]	1914
	1915	if (!irc->otr->sent_accountname \|\| !irc->otr->sent_protocol) {
[dc9797f]	1916	return 0;
[5ebff60]	1917	}
[dc9797f]	1918
	1919	/* are we currently working on this key? */
[5ebff60]	1920	if (!strcmp(handle, irc->otr->sent_accountname) &&
	1921	!strcmp(protocol, irc->otr->sent_protocol)) {
[dc9797f]	1922	return 1;
[5ebff60]	1923	}
	1924
[dc9797f]	1925	/* do we have it queued for later? */
[5ebff60]	1926	for (kg = irc->otr->todo; kg; kg = kg->next) {
	1927	if (!strcmp(handle, kg->accountname) &&
	1928	!strcmp(protocol, kg->protocol)) {
[dc9797f]	1929	return 1;
[5ebff60]	1930	}
[dc9797f]	1931	}
[5ebff60]	1932
[dc9797f]	1933	return 0;
	1934	}
	1935
[764c7d1]	1936	void otr_keygen(irc_t irc, const char handle, const char *protocol)
	1937	{
[dc9797f]	1938	/* do nothing if a key for the requested account is already being generated */
[5ebff60]	1939	if (keygen_in_progress(irc, handle, protocol)) {
[dc9797f]	1940	return;
[5ebff60]	1941	}
[764c7d1]	1942
[522a00f]	1943	/* see if we already have a keygen child running. if not, start one and put a
[27db433]	1944	handler on its output. */
[5ebff60]	1945	if (!irc->otr->keygen \|\| waitpid(irc->otr->keygen, NULL, WNOHANG)) {
[27db433]	1946	pid_t p;
	1947	int to[2], from[2];
	1948	FILE tof, fromf;
[5ebff60]	1949
	1950	if (pipe(to) < 0 \|\| pipe(from) < 0) {
[e67e513]	1951	irc_rootmsg(irc, "otr keygen: couldn't create pipe: %s", strerror(errno));
[27db433]	1952	return;
	1953	}
[5ebff60]	1954
[27db433]	1955	tof = fdopen(to[1], "w");
	1956	fromf = fdopen(from[0], "r");
[5ebff60]	1957	if (!tof \|\| !fromf) {
[e67e513]	1958	irc_rootmsg(irc, "otr keygen: couldn't streamify pipe: %s", strerror(errno));
[27db433]	1959	return;
	1960	}
[5ebff60]	1961
[27db433]	1962	p = fork();
[5ebff60]	1963	if (p < 0) {
[e67e513]	1964	irc_rootmsg(irc, "otr keygen: couldn't fork: %s", strerror(errno));
[27db433]	1965	return;
	1966	}
[5ebff60]	1967
	1968	if (!p) {
[27db433]	1969	/* child process */
	1970	signal(SIGTERM, exit);
[12cc58b]	1971	keygen_child_main(irc->otr->us, to[0], from[1]);
[27db433]	1972	exit(0);
	1973	}
[5ebff60]	1974
[dc9797f]	1975	irc->otr->keygen = p;
	1976	irc->otr->to = tof;
	1977	irc->otr->from = fromf;
	1978	irc->otr->sent_accountname = NULL;
	1979	irc->otr->sent_protocol = NULL;
	1980	irc->otr->todo = NULL;
[ad2d8bc]	1981	b_input_add(from[0], B_EV_IO_READ, keygen_finish_handler, irc);
[27db433]	1982	}
[5ebff60]	1983
[dc9797f]	1984	/* is the keygen slave currently working? */
[5ebff60]	1985	if (irc->otr->sent_accountname) {
[dc9797f]	1986	/* enqueue our job for later transmission */
	1987	kg_t **kg = &irc->otr->todo;
[5ebff60]	1988	while (*kg) {
	1989	kg = &((*kg)->next);
	1990	}
[dc9797f]	1991	*kg = g_new0(kg_t, 1);
[ba5add7]	1992	(*kg)->accountname = g_strdup(handle);
	1993	(*kg)->protocol = g_strdup(protocol);
[dc9797f]	1994	} else {
	1995	/* send our job over and remember it */
	1996	fprintf(irc->otr->to, "%s\n%s\n", handle, protocol);
	1997	fflush(irc->otr->to);
[ba5add7]	1998	irc->otr->sent_accountname = g_strdup(handle);
	1999	irc->otr->sent_protocol = g_strdup(protocol);
[dc9797f]	2000	}
[27db433]	2001	}
[522a00f]	2002
[12cc58b]	2003	void keygen_child_main(OtrlUserState us, int infd, int outfd)
[27db433]	2004	{
	2005	FILE input, output;
	2006	char filename[128], accountname[512], protocol[512];
	2007	gcry_error_t e;
	2008	int tempfd;
[5ebff60]	2009
[27db433]	2010	input = fdopen(infd, "r");
	2011	output = fdopen(outfd, "w");
[5ebff60]	2012
	2013	while (!feof(input) && !ferror(input) && !feof(output) && !ferror(output)) {
[27db433]	2014	myfgets(accountname, 512, input);
	2015	myfgets(protocol, 512, input);
[5ebff60]	2016
[27db433]	2017	strncpy(filename, "/tmp/bitlbee-XXXXXX", 128);
	2018	tempfd = mkstemp(filename);
	2019	close(tempfd);
	2020
	2021	e = otrl_privkey_generate(us, filename, accountname, protocol);
[5ebff60]	2022	if (e) {
[27db433]	2023	fprintf(output, "\n"); /* this means failure */
	2024	fprintf(output, "otr keygen: %s\n", gcry_strerror(e));
	2025	unlink(filename);
	2026	} else {
	2027	fprintf(output, "%s\n", filename);
	2028	fprintf(output, "otr keygen for %s/%s complete\n", accountname, protocol);
	2029	}
	2030	fflush(output);
	2031	}
[5ebff60]	2032
[27db433]	2033	fclose(input);
	2034	fclose(output);
[764c7d1]	2035	}
	2036
	2037	gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond)
	2038	{
[5ebff60]	2039	irc_t irc = (irc_t ) data;
[27db433]	2040	char filename[512], msg[512];
	2041
[dc9797f]	2042	myfgets(filename, 512, irc->otr->from);
	2043	myfgets(msg, 512, irc->otr->from);
[5ebff60]	2044
[e67e513]	2045	irc_rootmsg(irc, "%s", msg);
[5ebff60]	2046	if (filename[0]) {
	2047	if (strsane(irc->user->nick)) {
[c7b94ef]	2048	char *kf = g_strdup_printf("%s%s.otr_keys", global.conf->configdir, irc->user->nick);
	2049	char *tmp = g_strdup_printf("%s.new", kf);
	2050	copyfile(filename, tmp);
	2051	unlink(filename);
[5ebff60]	2052	rename(tmp, kf);
[c7b94ef]	2053	otrl_privkey_read(irc->otr->us, kf);
	2054	g_free(kf);
	2055	g_free(tmp);
	2056	} else {
	2057	otrl_privkey_read(irc->otr->us, filename);
	2058	unlink(filename);
	2059	}
[27db433]	2060	}
[5ebff60]	2061
[dc9797f]	2062	/* forget this job */
[ba5add7]	2063	g_free(irc->otr->sent_accountname);
	2064	g_free(irc->otr->sent_protocol);
[dc9797f]	2065	irc->otr->sent_accountname = NULL;
	2066	irc->otr->sent_protocol = NULL;
[5ebff60]	2067
[dc9797f]	2068	/* see if there are any more in the queue */
[5ebff60]	2069	if (irc->otr->todo) {
[dc9797f]	2070	kg_t *p = irc->otr->todo;
	2071	/* send the next one over */
	2072	fprintf(irc->otr->to, "%s\n%s\n", p->accountname, p->protocol);
	2073	fflush(irc->otr->to);
	2074	irc->otr->sent_accountname = p->accountname;
	2075	irc->otr->sent_protocol = p->protocol;
	2076	irc->otr->todo = p->next;
	2077	g_free(p);
	2078	return TRUE; /* keep watching */
	2079	} else {
	2080	/* okay, the slave is idle now, so kill him */
	2081	fclose(irc->otr->from);
	2082	fclose(irc->otr->to);
[2dcaf9a]	2083	irc->otr->from = irc->otr->to = NULL;
[dc9797f]	2084	kill(irc->otr->keygen, SIGTERM);
	2085	waitpid(irc->otr->keygen, NULL, 0);
	2086	irc->otr->keygen = 0;
[27db433]	2087	return FALSE; /* unregister ourselves */
	2088	}
	2089	}
	2090
	2091	void copyfile(const char a, const char b)
	2092	{
	2093	int fda, fdb;
	2094	int n;
	2095	char buf[1024];
[5ebff60]	2096
[27db433]	2097	fda = open(a, O_RDONLY);
	2098	fdb = open(b, O_WRONLY \| O_CREAT \| O_TRUNC, 0600);
[5ebff60]	2099
	2100	while ((n = read(fda, buf, 1024)) > 0) {
[27db433]	2101	write(fdb, buf, n);
[5ebff60]	2102	}
	2103
[27db433]	2104	close(fda);
[5ebff60]	2105	close(fdb);
[27db433]	2106	}
	2107
	2108	void myfgets(char s, int size, FILE stream)
	2109	{
[5ebff60]	2110	if (!fgets(s, size, stream)) {
[27db433]	2111	s[0] = '\0';
	2112	} else {
	2113	int n = strlen(s);
[5ebff60]	2114	if (n > 0 && s[n - 1] == '\n') {
	2115	s[n - 1] = '\0';
	2116	}
[27db433]	2117	}
[764c7d1]	2118	}
	2119
[6738a67]	2120	void yes_keygen(void *data)
[764c7d1]	2121	{
[5ebff60]	2122	account_t acc = (account_t ) data;
[ad2d8bc]	2123	irc_t *irc = acc->bee->ui_data;
[5ebff60]	2124
	2125	if (keygen_in_progress(irc, acc->user, acc->prpl->name)) {
[e67e513]	2126	irc_rootmsg(irc, "keygen for %s/%s already in progress",
[5ebff60]	2127	acc->user, acc->prpl->name);
[dc9797f]	2128	} else {
[e67e513]	2129	irc_rootmsg(irc, "starting background keygen for %s/%s",
[5ebff60]	2130	acc->user, acc->prpl->name);
[e67e513]	2131	irc_rootmsg(irc, "you will be notified when it completes");
[ad2d8bc]	2132	otr_keygen(irc, acc->user, acc->prpl->name);
[dc9797f]	2133	}
[764c7d1]	2134	}
[3231485]	2135
[c7b94ef]	2136	/* check whether a string is safe to use in a path component */
	2137	int strsane(const char *s)
	2138	{
	2139	return strpbrk(s, "/\\") == NULL;
	2140	}
	2141
[c239fff]	2142	/* close the OTR connection with the given buddy */
	2143	gboolean otr_disconnect_user(irc_t irc, irc_user_t u)
	2144	{
[5ebff60]	2145	if (!u \|\| !u->bu \|\| !u->bu->ic) {
[c239fff]	2146	return FALSE;
[5ebff60]	2147	}
[c239fff]	2148
	2149	/* XXX we disconnect all instances; is that what we want? */
	2150	otrl_message_disconnect_all_instances(irc->otr->us, &otr_ops,
[5ebff60]	2151	u->bu->ic, u->bu->ic->acc->user, u->bu->ic->acc->prpl->name,
	2152	u->bu->handle);
	2153
[c239fff]	2154	u->flags &= ~IRC_USER_OTR_TRUSTED;
	2155	u->flags &= ~IRC_USER_OTR_ENCRYPTED;
	2156	otr_update_modeflags(irc, u);
	2157
	2158	return TRUE;
	2159	}
	2160
	2161	/* close all active OTR connections */
	2162	void otr_disconnect_all(irc_t *irc)
	2163	{
	2164	irc_user_t *u;
	2165	ConnContext *ctx;
	2166
[5ebff60]	2167	for (ctx = irc->otr->us->context_root; ctx; ctx = ctx->next) {
	2168	if (ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) {
[c239fff]	2169	u = peeruser(irc, ctx->username, ctx->protocol);
	2170	(void) otr_disconnect_user(irc, u);
	2171	}
	2172	}
	2173	}

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