1 /********************************************************************\
2   * BitlBee -- An IRC to other IM-networks gateway                     *
3   *                                                                    *
4   * Copyright 2002-2012 Wilmer van der Gaast and others                *
5   \********************************************************************/
6 
7 /*
8  * nogaim, soon to be known as im_api. Not a separate product (unless
9  * someone would be interested in such a thing), just a new name.
10  *
11  * Gaim without gaim - for BitlBee
12  *
13  * This file contains functions called by the Gaim IM-modules. It contains
14  * some struct and type definitions from Gaim.
15  *
16  * Copyright (C) 1998-1999, Mark Spencer <markster@marko.net>
17  *                          (and possibly other members of the Gaim team)
18  * Copyright 2002-2012 Wilmer van der Gaast <wilmer@gaast.net>
19  */
20 
21 /*
22   This program is free software; you can redistribute it and/or modify
23   it under the terms of the GNU General Public License as published by
24   the Free Software Foundation; either version 2 of the License, or
25   (at your option) any later version.
26 
27   This program is distributed in the hope that it will be useful,
28   but WITHOUT ANY WARRANTY; without even the implied warranty of
29   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
30   GNU General Public License for more details.
31 
32   You should have received a copy of the GNU General Public License with
33   the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
34   if not, write to the Free Software Foundation, Inc., 51 Franklin St.,
35   Fifth Floor, Boston, MA  02110-1301  USA
36 */
37 
38 #ifndef _NOGAIM_H
39 #define _NOGAIM_H
40 
41 #if (__sun)
42 #include <inttypes.h>
43 #else
44 #include <stdint.h>
45 #endif
46 
47 #include "bitlbee.h"
48 #include "account.h"
49 #include "proxy.h"
50 #include "query.h"
51 #include "md5.h"
52 #include "ft.h"
53 
54 #define BUDDY_ALIAS_MAXLEN 388   /* because MSN names can be 387 characters */
55 
56 #define WEBSITE "http://www.bitlbee.org/"
57 
58 /* Sharing flags between all kinds of things. I just hope I won't hit any
59    limits before 32-bit machines become extinct. ;-) */
60 #define OPT_LOGGED_IN   0x00000001
61 #define OPT_LOGGING_OUT 0x00000002
62 #define OPT_AWAY        0x00000004
63 #define OPT_MOBILE      0x00000008
64 #define OPT_DOES_HTML   0x00000010
65 #define OPT_LOCALBUDDY  0x00000020 /* For nicks local to one groupchat */
66 #define OPT_SLOW_LOGIN  0x00000040 /* I.e. Twitter Oauth @ login time */
67 #define OPT_TYPING      0x00000100 /* Some pieces of code make assumptions */
68 #define OPT_THINKING    0x00000200 /* about these values... Stupid me! */
69 #define OPT_NOOTR       0x00001000 /* protocol not suitable for OTR */
70 #define OPT_PONGS       0x00010000 /* Service sends us keep-alives */
71 #define OPT_PONGED      0x00020000 /* Received a keep-alive during last interval */
72 #define OPT_SELFMESSAGE 0x00080000 /* A message sent by self from another location */
73 
74 /* ok. now the fun begins. first we create a connection structure */
75 struct im_connection {
76 	account_t *acc;
77 	uint32_t flags;
78 
79 	/* each connection then can have its own protocol-specific data */
80 	void *proto_data;
81 
82 	/* all connections need an input watcher */
83 	int inpa;
84 	guint keepalive;
85 
86 	/* buddy list stuff. there is still a global groups for the buddy list, but
87 	 * we need to maintain our own set of buddies, and our own permit/deny lists */
88 	GSList *permit;
89 	GSList *deny;
90 	int permdeny;
91 
92 	char *away;
93 
94 	/* BitlBee */
95 	bee_t *bee;
96 
97 	GSList *groupchats;
98 	GSList *chatlist;
99 	GHashTable *bee_users;
100 };
101 
102 struct groupchat {
103 	struct im_connection *ic;
104 
105 	/* stuff used just for chat */
106 	/* The in_room variable is a list of handles (not nicks!), kind of
107 	 * "nick list". This is how you can check who is in the group chat
108 	 * already, for example to avoid adding somebody two times. */
109 	GList *in_room;
110 	//GList *ignored;
111 
112 	//struct groupchat *next;
113 	/* The title variable contains the ID you gave when you created the
114 	 * chat using imcb_chat_new(). */
115 	char *title;
116 	/* Use imcb_chat_topic() to change this variable otherwise the user
117 	 * won't notice the topic change. */
118 	char *topic;
119 	char joined;
120 	/* This is for you, you can add your own structure here to extend this
121 	 * structure for your protocol's needs. */
122 	void *data;
123 	void *ui_data;
124 };
125 
126 struct buddy {
127 	char name[80];
128 	char show[BUDDY_ALIAS_MAXLEN];
129 	int present;
130 	time_t signon;
131 	time_t idle;
132 	int uc;
133 	guint caps; /* woohoo! */
134 	void *proto_data; /* what a hack */
135 	struct im_connection *ic; /* the connection it belongs to */
136 };
137 
138 struct buddy_action {
139 	char *name;
140 	char *description;
141 };
142 
143 /* This enum takes a few things from libpurple and a few things from old OPT_ flags.
144  * The only flag that was used before this struct was PRPL_OPT_NOOTR.
145  *
146  * The libpurple ones only use the same values as the PurpleProtocolOptions
147  * enum for convenience, but there's no promise of direct compatibility with
148  * those values. As of libpurple 2.8.0 they use up to 0x800 (1 << 11), which is
149  * a nice coincidence.
150  */
151 typedef enum {
152 	/* The protocol doesn't use passwords
153 	 * Mirrors libpurple's OPT_PROTO_NO_PASSWORD */
154 	PRPL_OPT_NO_PASSWORD = 1 << 4,
155 
156 	/* The protocol doesn't require passwords, but may use them
157 	 * Mirrors libpurple's OPT_PROTO_PASSWORD_OPTIONAL */
158 	PRPL_OPT_PASSWORD_OPTIONAL = 1 << 7,
159 
160 	/* The protocol is not suitable for OTR, see OPT_NOOTR */
161 	PRPL_OPT_NOOTR = 1 << 12,
162 } prpl_options_t;
163 
164 struct prpl {
165 	int options;
166 	/* You should set this to the name of your protocol.
167 	 * - The user sees this name ie. when imcb_log() is used. */
168 	const char *name;
169 	void *data;
170 	/* Maximum Message Size of this protocol.
171 	 * - Introduced for OTR, in order to fragment large protocol messages.
172 	 * - 0 means "unlimited". */
173 	unsigned int mms;
174 
175 	/* Added this one to be able to add per-account settings, don't think
176 	 * it should be used for anything else. You are supposed to use the
177 	 * set_add() function to add new settings. */
178 	void (* init)           (account_t *);
179 	/* The typical usage of the login() function:
180 	 * - Create an im_connection using imcb_new() from the account_t parameter.
181 	 * - Initialize your myproto_data struct - you should store all your protocol-specific data there.
182 	 * - Save your custom structure to im_connection->proto_data.
183 	 * - Use proxy_connect() to connect to the server.
184 	 */
185 	void (* login)          (account_t *);
186 	/* Implementing this function is optional. */
187 	void (* keepalive)      (struct im_connection *);
188 	/* In this function you should:
189 	 * - Tell the server about you are logging out.
190 	 * - g_free() your myproto_data struct as BitlBee does not know how to
191 	 *   properly do so.
192 	 */
193 	void (* logout)         (struct im_connection *);
194 
195 	/* This function is called when the user wants to send a message to a handle.
196 	 * - 'to' is a handle, not a nick
197 	 * - 'flags' may be ignored
198 	 */
199 	int (* buddy_msg)      (struct im_connection *, char *to, char *message, int flags);
200 	/* This function is called then the user uses the /away IRC command.
201 	 * - 'state' contains the away reason.
202 	 * - 'message' may be ignored if your protocol does not support it.
203 	 */
204 	void (* set_away)       (struct im_connection *, char *state, char *message);
205 	/* Implementing this function is optional. */
206 	int (* send_typing)    (struct im_connection *, char *who, int flags);
207 
208 	/* 'name' is a handle to add/remove. For now BitlBee doesn't really
209 	 * handle groups, just set it to NULL, so you can ignore that
210 	 * parameter. */
211 	void (* add_buddy)      (struct im_connection *, char *name, char *group);
212 	void (* remove_buddy)   (struct im_connection *, char *name, char *group);
213 
214 	/* Block list stuff. Implementing these are optional. */
215 	void (* add_permit)     (struct im_connection *, char *who);
216 	void (* add_deny)       (struct im_connection *, char *who);
217 	void (* rem_permit)     (struct im_connection *, char *who);
218 	void (* rem_deny)       (struct im_connection *, char *who);
219 
220 	/* Request profile info. Free-formatted stuff, the IM module gives back
221 	   this info via imcb_log(). Implementing these are optional. */
222 	void (* get_info)       (struct im_connection *, char *who);
223 
224 	/* Group chat stuff. */
225 	/* This is called when the user uses the /invite IRC command.
226 	 * - 'who' may be ignored
227 	 * - 'message' is a handle to invite
228 	 */
229 	void (* chat_invite)    (struct groupchat *, char *who, char *message);
230 	/* This is called when the user uses the /kick IRC command.
231 	 * - 'who' is a handle to kick
232 	 * - 'message' is a kick message or NULL
233 	 */
234 	void (* chat_kick)      (struct groupchat *, char *who, const char *message);
235 	/* This is called when the user uses the /part IRC command in a group
236 	 * chat. You just should tell the user about it, nothing more. */
237 	void (* chat_leave)     (struct groupchat *);
238 	/* This is called when the user sends a message to the groupchat.
239 	 * 'flags' may be ignored. */
240 	void (* chat_msg)       (struct groupchat *, char *message, int flags);
241 	/* This is called when the user uses the /join #nick IRC command.
242 	 * - 'who' is the handle of the nick
243 	 */
244 	struct groupchat *
245 	(* chat_with)      (struct im_connection *, char *who);
246 	/* This is used when the user uses the /join #channel IRC command.  If
247 	 * your protocol does not support publicly named group chats, then do
248 	 * not implement this. */
249 	struct groupchat *
250 	(* chat_join)      (struct im_connection *, const char *room,
251 	                    const char *nick, const char *password, set_t **sets);
252 	/* Change the topic, if supported. Note that BitlBee expects the IM
253 	   server to confirm the topic change with a regular topic change
254 	   event. If it doesn't do that, you have to fake it to make it
255 	   visible to the user. */
256 	void (* chat_topic)     (struct groupchat *, char *topic);
257 
258 	/* If your protocol module needs any special info for joining chatrooms
259 	   other than a roomname + nickname, add them here. */
260 	void (* chat_add_settings)      (account_t *acc, set_t **head);
261 	void (* chat_free_settings)     (account_t *acc, set_t **head);
262 
263 	/* You can tell what away states your protocol supports, so that
264 	 * BitlBee will try to map the IRC away reasons to them. If your
265 	 * protocol doesn't have any, just return one generic "Away". */
266 	GList *(* away_states)(struct im_connection *ic);
267 
268 	/* Mainly for AOL, since they think "Bung hole" == "Bu ngho le". *sigh*
269 	 * - Most protocols will just want to set this to g_strcasecmp().*/
270 	int (* handle_cmp) (const char *who1, const char *who2);
271 
272 	/* Implement these callbacks if you want to use imcb_ask_auth() */
273 	void (* auth_allow)     (struct im_connection *, const char *who);
274 	void (* auth_deny)      (struct im_connection *, const char *who);
275 
276 	/* Incoming transfer request */
277 	void (* transfer_request) (struct im_connection *, file_transfer_t *ft, char *handle);
278 
279 	void (* buddy_data_add) (struct bee_user *bu);
280 	void (* buddy_data_free) (struct bee_user *bu);
281 
282 	GList *(* buddy_action_list) (struct bee_user *bu);
283 	void *(* buddy_action) (struct bee_user *bu, const char *action, char * const args[], void *data);
284 
285 	/* If null, equivalent to handle_cmp( ic->acc->user, who ) */
286 	gboolean (* handle_is_self) (struct im_connection *, const char *who);
287 
288 	/* This sets/updates the im_connection->chatlist field with a
289 	 * bee_chat_info_t GSList. This function should ensure the
290 	 * bee_chat_list_finish() function gets called at some point
291 	 * after the chat list is completely updated.
292 	 */
293 	void (* chat_list) (struct im_connection *, const char *server);
294 
295 	/* Some placeholders so eventually older plugins may cooperate with newer BitlBees. */
296 	void *resv1;
297 	void *resv2;
298 	void *resv3;
299 	void *resv4;
300 	void *resv5;
301 };
302 
303 struct plugin_info
304 {
305 	guint abiver;
306 	const char *name;
307 	const char *version;
308 	const char *description;
309 	const char *author;
310 	const char *url;
311 };
312 
313 #ifdef WITH_PLUGINS
314 G_MODULE_EXPORT GList *get_plugins();
315 #endif
316 
317 /* im_api core stuff. */
318 void nogaim_init();
319 G_MODULE_EXPORT GList *get_protocols();
320 G_MODULE_EXPORT GList *get_protocols_disabled();
321 G_MODULE_EXPORT GSList *get_connections();
322 G_MODULE_EXPORT struct prpl *find_protocol(const char *name);
323 G_MODULE_EXPORT gboolean is_protocol_disabled(const char *name);
324 G_MODULE_EXPORT char *explain_unknown_protocol(const char *name);
325 /* When registering a new protocol, you should allocate space for a new prpl
326  * struct, initialize it (set the function pointers to point to your
327  * functions), finally call this function. */
328 G_MODULE_EXPORT void register_protocol(struct prpl *);
329 
330 /* Connection management. */
331 /* You will need this function in prpl->login() to get an im_connection from
332  * the account_t parameter. */
333 G_MODULE_EXPORT struct im_connection *imcb_new(account_t *acc);
334 G_MODULE_EXPORT void imc_free(struct im_connection *ic);
335 /* Once you're connected, you should call this function, so that the user will
336  * see the success. */
337 G_MODULE_EXPORT void imcb_connected(struct im_connection *ic);
338 /* This can be used to disconnect when something went wrong (ie. read error
339  * from the server). You probably want to set the second parameter to TRUE. */
340 G_MODULE_EXPORT void imc_logout(struct im_connection *ic, int allow_reconnect);
341 
342 /* Communicating with the user. */
343 /* A printf()-like function to tell the user anything you want. */
344 G_MODULE_EXPORT void imcb_log(struct im_connection *ic, char *format, ...) G_GNUC_PRINTF(2, 3);
345 /* To tell the user an error, ie. before logging out when an error occurs. */
346 G_MODULE_EXPORT void imcb_error(struct im_connection *ic, char *format, ...) G_GNUC_PRINTF(2, 3);
347 
348 /* To ask a your about something.
349  * - 'msg' is the question.
350  * - 'data' can be your custom struct - it will be passed to the callbacks.
351  * - 'doit' or 'dont' will be called depending of the answer of the user.
352  */
353 G_MODULE_EXPORT void imcb_ask(struct im_connection *ic, char *msg, void *data, query_callback doit,
354                               query_callback dont);
355 G_MODULE_EXPORT void imcb_ask_with_free(struct im_connection *ic, char *msg, void *data, query_callback doit,
356                                         query_callback dont, query_callback myfree);
357 
358 /* Two common questions you may want to ask:
359  * - X added you to his contact list, allow?
360  * - X is not in your contact list, want to add?
361  */
362 G_MODULE_EXPORT void imcb_ask_auth(struct im_connection *ic, const char *handle, const char *realname);
363 G_MODULE_EXPORT void imcb_ask_add(struct im_connection *ic, const char *handle, const char *realname);
364 
365 /* Buddy management */
366 /* This function should be called for each handle which are visible to the
367  * user, usually after a login, or if the user added a buddy and the IM
368  * server confirms that the add was successful. Don't forget to do this! */
369 G_MODULE_EXPORT void imcb_add_buddy(struct im_connection *ic, const char *handle, const char *group);
370 G_MODULE_EXPORT void imcb_remove_buddy(struct im_connection *ic, const char *handle, char *group);
371 G_MODULE_EXPORT void imcb_rename_buddy(struct im_connection *ic, const char *handle, const char *realname);
372 G_MODULE_EXPORT void imcb_buddy_nick_hint(struct im_connection *ic, const char *handle, const char *nick);
373 G_MODULE_EXPORT void imcb_buddy_nick_change(struct im_connection *ic, const char *handle, const char *nick);
374 G_MODULE_EXPORT void imcb_buddy_action_response(bee_user_t *bu, const char *action, char * const args[], void *data);
375 
376 G_MODULE_EXPORT void imcb_buddy_typing(struct im_connection *ic, const char *handle, guint32 flags);
377 G_MODULE_EXPORT struct bee_user *imcb_buddy_by_handle(struct im_connection *ic, const char *handle);
378 
379 G_GNUC_DEPRECATED G_MODULE_EXPORT void imcb_clean_handle(struct im_connection *ic, char *handle);
380 
381 /* Actions, or whatever. */
382 int imc_away_send_update(struct im_connection *ic);
383 int imc_chat_msg(struct groupchat *c, char *msg, int flags);
384 
385 void imc_add_allow(struct im_connection *ic, char *handle);
386 void imc_rem_allow(struct im_connection *ic, char *handle);
387 void imc_add_block(struct im_connection *ic, char *handle);
388 void imc_rem_block(struct im_connection *ic, char *handle);
389 
390 /* Misc. stuff */
391 char *set_eval_timezone(set_t *set, char *value);
392 gboolean auto_reconnect(gpointer data, gint fd, b_input_condition cond);
393 void cancel_auto_reconnect(struct account *a);
394 
395 #endif
396