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comparison: libpurple/protocols/silc/wb.c

libpurple/protocols/silc/wb.c

branch
cpw.khc.msnp14
changeset 20481
65485e2ed8a3
parent 20472
6a6d2ef151e6
parent 20478
46933dc62880
equal deleted inserted replaced
20480:df9df972434f 20481:65485e2ed8a3
1 /*
2
3 wb.c
4
5 Author: Pekka Riikonen <priikone@silcnet.org>
6
7 Copyright (C) 2005 Pekka Riikonen
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; version 2 of the License.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 */
19
20 #include "silcincludes.h"
21 #include "silcclient.h"
22 #include "silcpurple.h"
23 #include "wb.h"
24
25 /*
26 SILC Whiteboard packet:
27
28 1 byte command
29 2 bytes width
30 2 bytes height
31 4 bytes brush color
32 2 bytes brush size
33 n bytes data
34
35 Data:
36
37 4 bytes x
38 4 bytes y
39
40 Commands:
41
42 0x01 draw
43 0x02 clear
44
45 MIME:
46
47 MIME-Version: 1.0
48 Content-Type: application/x-wb
49 Content-Transfer-Encoding: binary
50
51 */
52
53 #define SILCPURPLE_WB_MIME "MIME-Version: 1.0\r\nContent-Type: application/x-wb\r\nContent-Transfer-Encoding: binary\r\n\r\n"
54 #define SILCPURPLE_WB_HEADER strlen(SILCPURPLE_WB_MIME) + 11
55
56 #define SILCPURPLE_WB_WIDTH 500
57 #define SILCPURPLE_WB_HEIGHT 400
58 #define SILCPURPLE_WB_WIDTH_MAX 1024
59 #define SILCPURPLE_WB_HEIGHT_MAX 1024
60
61 /* Commands */
62 typedef enum {
63 SILCPURPLE_WB_DRAW = 0x01,
64 SILCPURPLE_WB_CLEAR = 0x02,
65 } SilcPurpleWbCommand;
66
67 /* Brush size */
68 typedef enum {
69 SILCPURPLE_WB_BRUSH_SMALL = 2,
70 SILCPURPLE_WB_BRUSH_MEDIUM = 5,
71 SILCPURPLE_WB_BRUSH_LARGE = 10,
72 } SilcPurpleWbBrushSize;
73
74 /* Brush color (XXX Purple should provide default colors) */
75 typedef enum {
76 SILCPURPLE_WB_COLOR_BLACK = 0,
77 SILCPURPLE_WB_COLOR_RED = 13369344,
78 SILCPURPLE_WB_COLOR_GREEN = 52224,
79 SILCPURPLE_WB_COLOR_BLUE = 204,
80 SILCPURPLE_WB_COLOR_YELLOW = 15658496,
81 SILCPURPLE_WB_COLOR_ORANGE = 16737792,
82 SILCPURPLE_WB_COLOR_CYAN = 52428,
83 SILCPURPLE_WB_COLOR_VIOLET = 5381277,
84 SILCPURPLE_WB_COLOR_PURPLE = 13369548,
85 SILCPURPLE_WB_COLOR_TAN = 12093547,
86 SILCPURPLE_WB_COLOR_BROWN = 5256485,
87 SILCPURPLE_WB_COLOR_GREY = 11184810,
88 SILCPURPLE_WB_COLOR_WHITE = 16777215,
89 } SilcPurpleWbColor;
90
91 typedef struct {
92 int type; /* 0 = buddy, 1 = channel */
93 union {
94 SilcClientEntry client;
95 SilcChannelEntry channel;
96 } u;
97 int width;
98 int height;
99 int brush_size;
100 int brush_color;
101 } *SilcPurpleWb;
102
103 /* Initialize whiteboard */
104
105 PurpleWhiteboard *silcpurple_wb_init(SilcPurple sg, SilcClientEntry client_entry)
106 {
107 SilcClientConnection conn;
108 PurpleWhiteboard *wb;
109 SilcPurpleWb wbs;
110
111 conn = sg->conn;
112 wb = purple_whiteboard_get_session(sg->account, client_entry->nickname);
113 if (!wb)
114 wb = purple_whiteboard_create(sg->account, client_entry->nickname, 0);
115 if (!wb)
116 return NULL;
117
118 if (!wb->proto_data) {
119 wbs = silc_calloc(1, sizeof(*wbs));
120 if (!wbs)
121 return NULL;
122 wbs->type = 0;
123 wbs->u.client = client_entry;
124 wbs->width = SILCPURPLE_WB_WIDTH;
125 wbs->height = SILCPURPLE_WB_HEIGHT;
126 wbs->brush_size = SILCPURPLE_WB_BRUSH_SMALL;
127 wbs->brush_color = SILCPURPLE_WB_COLOR_BLACK;
128 wb->proto_data = wbs;
129
130 /* Start the whiteboard */
131 purple_whiteboard_start(wb);
132 purple_whiteboard_clear(wb);
133 }
134
135 return wb;
136 }
137
138 PurpleWhiteboard *silcpurple_wb_init_ch(SilcPurple sg, SilcChannelEntry channel)
139 {
140 PurpleWhiteboard *wb;
141 SilcPurpleWb wbs;
142
143 wb = purple_whiteboard_get_session(sg->account, channel->channel_name);
144 if (!wb)
145 wb = purple_whiteboard_create(sg->account, channel->channel_name, 0);
146 if (!wb)
147 return NULL;
148
149 if (!wb->proto_data) {
150 wbs = silc_calloc(1, sizeof(*wbs));
151 if (!wbs)
152 return NULL;
153 wbs->type = 1;
154 wbs->u.channel = channel;
155 wbs->width = SILCPURPLE_WB_WIDTH;
156 wbs->height = SILCPURPLE_WB_HEIGHT;
157 wbs->brush_size = SILCPURPLE_WB_BRUSH_SMALL;
158 wbs->brush_color = SILCPURPLE_WB_COLOR_BLACK;
159 wb->proto_data = wbs;
160
161 /* Start the whiteboard */
162 purple_whiteboard_start(wb);
163 purple_whiteboard_clear(wb);
164 }
165
166 return wb;
167 }
168
169 static void
170 silcpurple_wb_parse(SilcPurpleWb wbs, PurpleWhiteboard *wb,
171 unsigned char *message, SilcUInt32 message_len)
172 {
173 SilcUInt8 command;
174 SilcUInt16 width, height, brush_size;
175 SilcUInt32 brush_color, x, y, dx, dy;
176 SilcBufferStruct buf;
177 int ret;
178
179 /* Parse the packet */
180 silc_buffer_set(&buf, message, message_len);
181 ret = silc_buffer_unformat(&buf,
182 SILC_STR_UI_CHAR(&command),
183 SILC_STR_UI_SHORT(&width),
184 SILC_STR_UI_SHORT(&height),
185 SILC_STR_UI_INT(&brush_color),
186 SILC_STR_UI_SHORT(&brush_size),
187 SILC_STR_END);
188 if (ret < 0)
189 return;
190 silc_buffer_pull(&buf, ret);
191
192 /* Update whiteboard if its dimensions changed */
193 if (width != wbs->width || height != wbs->height)
194 silcpurple_wb_set_dimensions(wb, height, width);
195
196 if (command == SILCPURPLE_WB_DRAW) {
197 /* Parse data and draw it */
198 ret = silc_buffer_unformat(&buf,
199 SILC_STR_UI_INT(&dx),
200 SILC_STR_UI_INT(&dy),
201 SILC_STR_END);
202 if (ret < 0)
203 return;
204 silc_buffer_pull(&buf, 8);
205 x = dx;
206 y = dy;
207 while (buf.len > 0) {
208 ret = silc_buffer_unformat(&buf,
209 SILC_STR_UI_INT(&dx),
210 SILC_STR_UI_INT(&dy),
211 SILC_STR_END);
212 if (ret < 0)
213 return;
214 silc_buffer_pull(&buf, 8);
215
216 purple_whiteboard_draw_line(wb, x, y, x + dx, y + dy,
217 brush_color, brush_size);
218 x += dx;
219 y += dy;
220 }
221 }
222
223 if (command == SILCPURPLE_WB_CLEAR)
224 purple_whiteboard_clear(wb);
225 }
226
227 typedef struct {
228 unsigned char *message;
229 SilcUInt32 message_len;
230 SilcPurple sg;
231 SilcClientEntry sender;
232 SilcChannelEntry channel;
233 } *SilcPurpleWbRequest;
234
235 static void
236 silcpurple_wb_request_cb(SilcPurpleWbRequest req, gint id)
237 {
238 PurpleWhiteboard *wb;
239
240 if (id != 1)
241 goto out;
242
243 if (!req->channel)
244 wb = silcpurple_wb_init(req->sg, req->sender);
245 else
246 wb = silcpurple_wb_init_ch(req->sg, req->channel);
247
248 silcpurple_wb_parse(wb->proto_data, wb, req->message, req->message_len);
249
250 out:
251 silc_free(req->message);
252 silc_free(req);
253 }
254
255 static void
256 silcpurple_wb_request(SilcClient client, const unsigned char *message,
257 SilcUInt32 message_len, SilcClientEntry sender,
258 SilcChannelEntry channel)
259 {
260 char tmp[128];
261 SilcPurpleWbRequest req;
262 PurpleConnection *gc;
263 SilcPurple sg;
264
265 gc = client->application;
266 sg = gc->proto_data;
267
268 /* Open whiteboard automatically if requested */
269 if (purple_account_get_bool(sg->account, "open-wb", FALSE)) {
270 PurpleWhiteboard *wb;
271
272 if (!channel)
273 wb = silcpurple_wb_init(sg, sender);
274 else
275 wb = silcpurple_wb_init_ch(sg, channel);
276
277 silcpurple_wb_parse(wb->proto_data, wb, (unsigned char *)message,
278 message_len);
279 return;
280 }
281
282 if (!channel) {
283 g_snprintf(tmp, sizeof(tmp),
284 _("%s sent message to whiteboard. Would you like "
285 "to open the whiteboard?"), sender->nickname);
286 } else {
287 g_snprintf(tmp, sizeof(tmp),
288 _("%s sent message to whiteboard on %s channel. "
289 "Would you like to open the whiteboard?"),
290 sender->nickname, channel->channel_name);
291 }
292
293 req = silc_calloc(1, sizeof(*req));
294 if (!req)
295 return;
296 req->message = silc_memdup(message, message_len);
297 req->message_len = message_len;
298 req->sender = sender;
299 req->channel = channel;
300 req->sg = sg;
301
302 purple_request_action(gc, _("Whiteboard"), tmp, NULL, 1, req, 2,
303 _("Yes"), G_CALLBACK(silcpurple_wb_request_cb),
304 _("No"), G_CALLBACK(silcpurple_wb_request_cb));
305 }
306
307 /* Process incoming whiteboard message */
308
309 void silcpurple_wb_receive(SilcClient client, SilcClientConnection conn,
310 SilcClientEntry sender, SilcMessagePayload payload,
311 SilcMessageFlags flags, const unsigned char *message,
312 SilcUInt32 message_len)
313 {
314 SilcPurple sg;
315 PurpleConnection *gc;
316 PurpleWhiteboard *wb;
317 SilcPurpleWb wbs;
318
319 gc = client->application;
320 sg = gc->proto_data;
321
322 wb = purple_whiteboard_get_session(sg->account, sender->nickname);
323 if (!wb) {
324 /* Ask user if they want to open the whiteboard */
325 silcpurple_wb_request(client, message, message_len,
326 sender, NULL);
327 return;
328 }
329
330 wbs = wb->proto_data;
331 silcpurple_wb_parse(wbs, wb, (unsigned char *)message, message_len);
332 }
333
334 /* Process incoming whiteboard message on channel */
335
336 void silcpurple_wb_receive_ch(SilcClient client, SilcClientConnection conn,
337 SilcClientEntry sender, SilcChannelEntry channel,
338 SilcMessagePayload payload,
339 SilcMessageFlags flags,
340 const unsigned char *message,
341 SilcUInt32 message_len)
342 {
343 SilcPurple sg;
344 PurpleConnection *gc;
345 PurpleWhiteboard *wb;
346 SilcPurpleWb wbs;
347
348 gc = client->application;
349 sg = gc->proto_data;
350
351 wb = purple_whiteboard_get_session(sg->account, channel->channel_name);
352 if (!wb) {
353 /* Ask user if they want to open the whiteboard */
354 silcpurple_wb_request(client, message, message_len,
355 sender, channel);
356 return;
357 }
358
359 wbs = wb->proto_data;
360 silcpurple_wb_parse(wbs, wb, (unsigned char *)message, message_len);
361 }
362
363 /* Send whiteboard message */
364
365 void silcpurple_wb_send(PurpleWhiteboard *wb, GList *draw_list)
366 {
367 SilcPurpleWb wbs = wb->proto_data;
368 SilcBuffer packet;
369 GList *list;
370 int len;
371 PurpleConnection *gc;
372 SilcPurple sg;
373
374 g_return_if_fail(draw_list);
375 gc = purple_account_get_connection(wb->account);
376 g_return_if_fail(gc);
377 sg = gc->proto_data;
378 g_return_if_fail(sg);
379
380 len = SILCPURPLE_WB_HEADER;
381 for (list = draw_list; list; list = list->next)
382 len += 4;
383
384 packet = silc_buffer_alloc_size(len);
385 if (!packet)
386 return;
387
388 /* Assmeble packet */
389 silc_buffer_format(packet,
390 SILC_STR_UI32_STRING(SILCPURPLE_WB_MIME),
391 SILC_STR_UI_CHAR(SILCPURPLE_WB_DRAW),
392 SILC_STR_UI_SHORT(wbs->width),
393 SILC_STR_UI_SHORT(wbs->height),
394 SILC_STR_UI_INT(wbs->brush_color),
395 SILC_STR_UI_SHORT(wbs->brush_size),
396 SILC_STR_END);
397 silc_buffer_pull(packet, SILCPURPLE_WB_HEADER);
398 for (list = draw_list; list; list = list->next) {
399 silc_buffer_format(packet,
400 SILC_STR_UI_INT(GPOINTER_TO_INT(list->data)),
401 SILC_STR_END);
402 silc_buffer_pull(packet, 4);
403 }
404
405 /* Send the message */
406 if (wbs->type == 0) {
407 /* Private message */
408 silc_client_send_private_message(sg->client, sg->conn,
409 wbs->u.client,
410 SILC_MESSAGE_FLAG_DATA,
411 packet->head, len, TRUE);
412 } else if (wbs->type == 1) {
413 /* Channel message. Channel private keys are not supported. */
414 silc_client_send_channel_message(sg->client, sg->conn,
415 wbs->u.channel, NULL,
416 SILC_MESSAGE_FLAG_DATA,
417 packet->head, len, TRUE);
418 }
419
420 silc_buffer_free(packet);
421 }
422
423 /* Purple Whiteboard operations */
424
425 void silcpurple_wb_start(PurpleWhiteboard *wb)
426 {
427 /* Nothing here. Everything is in initialization */
428 }
429
430 void silcpurple_wb_end(PurpleWhiteboard *wb)
431 {
432 silc_free(wb->proto_data);
433 wb->proto_data = NULL;
434 }
435
436 void silcpurple_wb_get_dimensions(PurpleWhiteboard *wb, int *width, int *height)
437 {
438 SilcPurpleWb wbs = wb->proto_data;
439 *width = wbs->width;
440 *height = wbs->height;
441 }
442
443 void silcpurple_wb_set_dimensions(PurpleWhiteboard *wb, int width, int height)
444 {
445 SilcPurpleWb wbs = wb->proto_data;
446 wbs->width = width > SILCPURPLE_WB_WIDTH_MAX ? SILCPURPLE_WB_WIDTH_MAX :
447 width;
448 wbs->height = height > SILCPURPLE_WB_HEIGHT_MAX ? SILCPURPLE_WB_HEIGHT_MAX :
449 height;
450
451 /* Update whiteboard */
452 purple_whiteboard_set_dimensions(wb, wbs->width, wbs->height);
453 }
454
455 void silcpurple_wb_get_brush(PurpleWhiteboard *wb, int *size, int *color)
456 {
457 SilcPurpleWb wbs = wb->proto_data;
458 *size = wbs->brush_size;
459 *color = wbs->brush_color;
460 }
461
462 void silcpurple_wb_set_brush(PurpleWhiteboard *wb, int size, int color)
463 {
464 SilcPurpleWb wbs = wb->proto_data;
465 wbs->brush_size = size;
466 wbs->brush_color = color;
467
468 /* Update whiteboard */
469 purple_whiteboard_set_brush(wb, size, color);
470 }
471
472 void silcpurple_wb_clear(PurpleWhiteboard *wb)
473 {
474 SilcPurpleWb wbs = wb->proto_data;
475 SilcBuffer packet;
476 int len;
477 PurpleConnection *gc;
478 SilcPurple sg;
479
480 gc = purple_account_get_connection(wb->account);
481 g_return_if_fail(gc);
482 sg = gc->proto_data;
483 g_return_if_fail(sg);
484
485 len = SILCPURPLE_WB_HEADER;
486 packet = silc_buffer_alloc_size(len);
487 if (!packet)
488 return;
489
490 /* Assmeble packet */
491 silc_buffer_format(packet,
492 SILC_STR_UI32_STRING(SILCPURPLE_WB_MIME),
493 SILC_STR_UI_CHAR(SILCPURPLE_WB_CLEAR),
494 SILC_STR_UI_SHORT(wbs->width),
495 SILC_STR_UI_SHORT(wbs->height),
496 SILC_STR_UI_INT(wbs->brush_color),
497 SILC_STR_UI_SHORT(wbs->brush_size),
498 SILC_STR_END);
499
500 /* Send the message */
501 if (wbs->type == 0) {
502 /* Private message */
503 silc_client_send_private_message(sg->client, sg->conn,
504 wbs->u.client,
505 SILC_MESSAGE_FLAG_DATA,
506 packet->head, len, TRUE);
507 } else if (wbs->type == 1) {
508 /* Channel message */
509 silc_client_send_channel_message(sg->client, sg->conn,
510 wbs->u.channel, NULL,
511 SILC_MESSAGE_FLAG_DATA,
512 packet->head, len, TRUE);
513 }
514
515 silc_buffer_free(packet);
516 }

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