5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 2002 Pekka Riikonen
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.
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.
19 /* Implementation of Attribute Payload routines */
22 #include "silcincludes.h"
23 #include "silcattrs.h"
25 /******************************************************************************
29 ******************************************************************************/
31 struct SilcAttributePayloadStruct {
32 SilcAttribute attribute;
33 SilcAttributeFlags flags;
38 /* Parse one attribute payload */
41 silc_attribute_payload_parse(const unsigned char *payload,
42 SilcUInt32 payload_len)
44 SilcBufferStruct buffer;
45 SilcAttributePayload newp;
48 SILC_LOG_DEBUG(("Parsing attribute payload"));
50 silc_buffer_set(&buffer, (unsigned char *)payload, payload_len);
51 newp = silc_calloc(1, sizeof(*newp));
55 /* Parse the Attribute Payload. */
56 ret = silc_buffer_unformat(&buffer,
57 SILC_STR_UI_CHAR(&newp->attribute),
58 SILC_STR_UI_CHAR(&newp->flags),
59 SILC_STR_UI16_NSTRING_ALLOC(&newp->data,
65 if (newp->data_len > buffer.len - 4) {
66 SILC_LOG_ERROR(("Incorrect attribute payload"));
73 silc_attribute_payload_free(newp);
77 /* Encode one attribute payload to buffer */
79 SilcBuffer silc_attribute_payload_encode(SilcBuffer attrs,
80 SilcAttribute attribute,
81 SilcAttributeFlags flags,
83 SilcUInt32 object_size)
85 SilcBuffer buffer, tmpbuf = NULL;
86 unsigned char tmp[4], *str = NULL;
89 SILC_LOG_DEBUG(("Encoding Attribute Payload"));
91 /* Encode according to attribute type */
92 if (flags & SILC_ATTRIBUTE_FLAG_VALID) {
93 if (!object || !object_size)
98 case SILC_ATTRIBUTE_USER_INFO:
99 SILC_NOT_IMPLEMENTED("SILC_ATTRIBUTE_USER_INFO");
102 case SILC_ATTRIBUTE_SERVICE:
104 SilcAttributeObjService *service = object;
105 if (object_size != sizeof(*service))
107 len = strlen(service->address);
108 str = silc_malloc(7 + len);
111 SILC_PUT32_MSB(service->port, str);
112 SILC_PUT16_MSB(len, str + 4);
113 memcpy(str + 6, service->address, len);
114 str[6 + len] = service->status;
118 case SILC_ATTRIBUTE_STATUS_MOOD:
119 case SILC_ATTRIBUTE_PREFERRED_CONTACT:
121 SilcUInt32 mask = (SilcUInt32)object;
122 if (object_size != sizeof(SilcUInt32))
124 SILC_PUT32_MSB(mask, tmp);
126 object_size = sizeof(SilcUInt32);
130 case SILC_ATTRIBUTE_STATUS_FREETEXT:
131 case SILC_ATTRIBUTE_PREFERRED_LANGUAGE:
132 case SILC_ATTRIBUTE_TIMEZONE:
134 unsigned char *string = object;
135 str = silc_malloc(2 + object_size);
138 SILC_PUT16_MSB(object_size, str);
139 memcpy(str + 2, string, object_size);
145 case SILC_ATTRIBUTE_STATUS_MESSAGE:
146 case SILC_ATTRIBUTE_EXTENSION:
148 SilcAttributeObjMime *mime = object;
149 if (object_size != sizeof(*mime))
151 object = (void *)mime->mime;
152 object_size = mime->mime_len;
156 case SILC_ATTRIBUTE_GEOLOCATION:
158 SilcAttributeObjGeo *geo = object;
159 if (object_size != sizeof(*geo))
162 (geo->longitude ? strlen(geo->longitude) : 0) +
163 (geo->latitude ? strlen(geo->latitude) : 0) +
164 (geo->altitude ? strlen(geo->altitude) : 0) +
165 (geo->accuracy ? strlen(geo->accuracy) : 0);
168 tmpbuf = silc_buffer_alloc_size(8 + len);
171 silc_buffer_format(tmpbuf,
172 SILC_STR_UI16_STRING(geo->longitude),
173 SILC_STR_UI16_STRING(geo->latitude),
174 SILC_STR_UI16_STRING(geo->altitude),
175 SILC_STR_UI16_STRING(geo->accuracy),
180 case SILC_ATTRIBUTE_DEVICE_INFO:
182 SilcAttributeObjDevice *dev = object;
183 if (object_size != sizeof(*dev))
186 (dev->manufacturer ? strlen(dev->manufacturer) : 0) +
187 (dev->version ? strlen(dev->version) : 0) +
188 (dev->model ? strlen(dev->model) : 0) +
189 (dev->language ? strlen(dev->language) : 0);
190 tmpbuf = silc_buffer_alloc_size(4 + 8 + len);
193 silc_buffer_format(tmpbuf,
194 SILC_STR_UI_INT(dev->type),
195 SILC_STR_UI16_STRING(dev->manufacturer),
196 SILC_STR_UI16_STRING(dev->version),
197 SILC_STR_UI16_STRING(dev->model),
198 SILC_STR_UI16_STRING(dev->language),
203 case SILC_ATTRIBUTE_USER_PUBLIC_KEY:
204 case SILC_ATTRIBUTE_SERVER_PUBLIC_KEY:
206 SilcAttributeObjPk *pk = object;
207 if (object_size != sizeof(*pk))
209 len = (pk->type ? strlen(pk->type) : 0);
210 tmpbuf = silc_buffer_alloc_size(2 + len + pk->data_len);
213 silc_buffer_format(tmpbuf,
214 SILC_STR_UI_SHORT(len),
215 SILC_STR_UI16_STRING(pk->type),
216 SILC_STR_UI_XNSTRING(pk->data, pk->data_len),
221 case SILC_ATTRIBUTE_USER_DIGITAL_SIGNATURE:
222 case SILC_ATTRIBUTE_SERVER_DIGITAL_SIGNATURE:
224 SilcAttributeObjPk *pk = object;
225 if (object_size != sizeof(*pk))
228 object_size = pk->data_len;
239 len = 4 + object_size;
242 buffer = silc_buffer_alloc_size(len);
244 buffer = silc_buffer_realloc(buffer,
245 (buffer ? buffer->truelen + len : len));
246 silc_buffer_pull_tail(buffer, (buffer->end - buffer->data));
249 silc_buffer_format(buffer,
250 SILC_STR_UI_CHAR(attribute),
251 SILC_STR_UI_CHAR(flags),
252 SILC_STR_UI_SHORT((SilcUInt16)object_size),
253 SILC_STR_UI_XNSTRING(object, object_size),
256 silc_buffer_pull(buffer, len);
258 silc_buffer_push(buffer, buffer->data - buffer->head);
261 silc_buffer_free(tmpbuf);
267 /* Parse list of payloads */
269 SilcDList silc_attribute_payload_parse_list(const unsigned char *payload,
270 SilcUInt32 payload_len)
272 SilcBufferStruct buffer;
274 SilcAttributePayload newp;
277 SILC_LOG_DEBUG(("Parsing Attribute Payload list"));
279 silc_buffer_set(&buffer, (unsigned char *)payload, payload_len);
280 list = silc_dlist_init();
283 newp = silc_calloc(1, sizeof(*newp));
286 ret = silc_buffer_unformat(&buffer,
287 SILC_STR_UI_CHAR(&newp->attribute),
288 SILC_STR_UI_CHAR(&newp->flags),
289 SILC_STR_UI16_NSTRING_ALLOC(&newp->data,
295 if (newp->data_len > buffer.len) {
296 SILC_LOG_ERROR(("Incorrect attribute payload in list"));
300 len = 4 + newp->data_len;
301 if (buffer.len < len)
303 silc_buffer_pull(&buffer, len);
305 silc_dlist_add(list, newp);
311 silc_attribute_payload_list_free(list);
315 /* Free Attribute Payload */
317 void silc_attribute_payload_free(SilcAttributePayload payload)
319 silc_free(payload->data);
323 /* Free's list of Attribute Payloads */
325 void silc_attribute_payload_list_free(SilcDList list)
327 SilcAttributePayload entry;
329 silc_dlist_start(list);
330 while ((entry = silc_dlist_get(list)) != SILC_LIST_END) {
331 silc_attribute_payload_free(entry);
332 silc_dlist_del(list, entry);
335 silc_dlist_uninit(list);
338 /* Return attribute type */
340 SilcAttribute silc_attribute_get_attribute(SilcAttributePayload payload)
342 return payload->attribute;
345 /* Return attribute flags */
347 SilcAttributeFlags silc_attribute_get_flags(SilcAttributePayload payload)
349 return payload->flags;
352 /* Return attribute data from the payload */
354 const unsigned char *silc_attribute_get_data(SilcAttributePayload payload,
355 SilcUInt32 *data_len)
358 *data_len = payload->data_len;
359 return (const unsigned char *)payload->data;
362 /* Return parsed attribute object */
364 bool silc_attribute_get_object(SilcAttributePayload payload,
365 SilcAttribute attribute,
366 void **object, SilcUInt32 object_size)
371 if (!attribute || payload->attribute != attribute || !object || !(*object) ||
372 payload->flags & SILC_ATTRIBUTE_FLAG_INVALID)
376 case SILC_ATTRIBUTE_USER_INFO:
377 SILC_NOT_IMPLEMENTED("SILC_ATTRIBUTE_USER_INFO");
380 case SILC_ATTRIBUTE_SERVICE:
382 SilcAttributeObjService *service = *object;
383 if (object_size != sizeof(*service))
385 if (payload->data_len < 7)
387 SILC_GET32_MSB(service->port, payload->data);
388 SILC_GET16_MSB(len, payload->data + 4);
389 if (payload->data_len < 7 + len)
391 memcpy(service->address, payload->data + 6,
392 (len < sizeof(service->address) - 1 ? len :
393 sizeof(service->address) - 1));
394 service->status = payload->data[6 + len] ? TRUE : FALSE;
399 case SILC_ATTRIBUTE_STATUS_MOOD:
400 case SILC_ATTRIBUTE_PREFERRED_CONTACT:
402 SilcUInt32 *mask = *object;
403 if (object_size != sizeof(SilcUInt32))
405 if (payload->data_len < 4)
407 SILC_GET32_MSB(*mask, payload->data);
412 case SILC_ATTRIBUTE_STATUS_FREETEXT:
413 case SILC_ATTRIBUTE_PREFERRED_LANGUAGE:
414 case SILC_ATTRIBUTE_TIMEZONE:
416 char *string = *object;
417 if (payload->data_len < 2)
419 SILC_GET16_MSB(len, payload->data);
420 if (payload->data_len < 2 + len)
422 if (object_size < len)
424 memcpy(string, payload->data + 2, len);
429 case SILC_ATTRIBUTE_STATUS_MESSAGE:
430 case SILC_ATTRIBUTE_EXTENSION:
432 SilcAttributeObjMime *mime = *object;
433 if (object_size != sizeof(*mime))
435 mime->mime = (const unsigned char *)payload->data;
436 mime->mime_len = payload->data_len;
441 case SILC_ATTRIBUTE_GEOLOCATION:
443 SilcAttributeObjGeo *geo = *object;
444 SilcBufferStruct buffer;
446 if (object_size != sizeof(*geo))
448 silc_buffer_set(&buffer, (unsigned char *)payload->data,
450 res = silc_buffer_unformat(&buffer,
451 SILC_STR_UI16_STRING_ALLOC(&geo->longitude),
452 SILC_STR_UI16_STRING_ALLOC(&geo->latitude),
453 SILC_STR_UI16_STRING_ALLOC(&geo->altitude),
454 SILC_STR_UI16_STRING_ALLOC(&geo->accuracy),
462 case SILC_ATTRIBUTE_DEVICE_INFO:
464 SilcAttributeObjDevice *dev = *object;
465 SilcBufferStruct buffer;
468 if (object_size != sizeof(*dev))
470 silc_buffer_set(&buffer, (unsigned char *)payload->data,
473 silc_buffer_unformat(&buffer,
474 SILC_STR_UI_INT(&type),
475 SILC_STR_UI16_STRING_ALLOC(&dev->manufacturer),
476 SILC_STR_UI16_STRING_ALLOC(&dev->version),
477 SILC_STR_UI16_STRING_ALLOC(&dev->model),
478 SILC_STR_UI16_STRING_ALLOC(&dev->language),
487 case SILC_ATTRIBUTE_USER_PUBLIC_KEY:
488 case SILC_ATTRIBUTE_SERVER_PUBLIC_KEY:
490 SilcAttributeObjPk *pk = *object;
491 SilcBufferStruct buffer;
493 if (object_size != sizeof(*pk))
495 silc_buffer_set(&buffer, (unsigned char *)payload->data,
498 silc_buffer_unformat(&buffer,
499 SILC_STR_UI16_NSTRING_ALLOC(&pk->type, &len),
503 pk->data = silc_memdup(payload->data + 2 + len,
504 payload->data_len - 2 - len);
505 pk->data_len = payload->data_len - 2 - len;
510 case SILC_ATTRIBUTE_USER_DIGITAL_SIGNATURE:
511 case SILC_ATTRIBUTE_SERVER_DIGITAL_SIGNATURE:
513 SilcAttributeObjPk *pk = *object;
514 if (object_size != sizeof(*pk))
517 pk->data = silc_memdup(payload->data, payload->data_len);
518 pk->data_len = payload->data_len;