src/core/sipmsg.c

   1 /**
   2  * @file sipmsg.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2010-11 SIPE Project <http://sipe.sourceforge.net/>
   7  * Copyright (C) 2008 Novell, Inc.
   8  * Copyright (C) 2005 Thomas Butter <butter@uni-mannheim.de>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #include <stdlib.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <time.h>
  29
  30 #include <glib.h>
  31
  32 #include "sipmsg.h"
  33 #include "sipe-backend.h"
  34 #include "sipe-mime.h"
  35 #include "sipe-utils.h"
  36
  37 struct sipmsg *sipmsg_parse_msg(const gchar *msg) {
  38         const char *tmp = strstr(msg, "\r\n\r\n");
  39         char *line;
  40         struct sipmsg *smsg;
  41
  42         if(!tmp) return NULL;
  43
  44         line = g_strndup(msg, tmp - msg);
  45
  46         smsg = sipmsg_parse_header(line);
  47         smsg->body = g_strdup(tmp + 4);
  48
  49         g_free(line);
  50         return smsg;
  51 }
  52
  53 struct sipmsg *sipmsg_parse_header(const gchar *header) {
  54         struct sipmsg *msg = g_new0(struct sipmsg,1);
  55         gchar **lines = g_strsplit(header,"\r\n",0);
  56         gchar **parts;
  57         const gchar *contentlength;
  58         if(!lines[0]) {
  59                 g_strfreev(lines);
  60                 g_free(msg);
  61                 return NULL;
  62         }
  63         parts = g_strsplit(lines[0], " ", 3);
  64         if(!parts[0] || !parts[1] || !parts[2]) {
  65                 g_strfreev(parts);
  66                 g_strfreev(lines);
  67                 g_free(msg);
  68                 return NULL;
  69         }
  70         if(strstr(parts[0],"SIP") || strstr(parts[0],"HTTP")) { /* numeric response */
  71                 msg->responsestr = g_strdup(parts[2]);
  72                 msg->response = strtol(parts[1],NULL,10);
  73         } else { /* request */
  74                 msg->method = g_strdup(parts[0]);
  75                 msg->target = g_strdup(parts[1]);
  76                 msg->response = 0;
  77         }
  78         g_strfreev(parts);
  79         if (sipe_utils_parse_lines(&msg->headers, lines + 1, ":") == FALSE) {
  80                 g_strfreev(lines);
  81                 sipmsg_free(msg);
  82                 return NULL;
  83         }
  84         g_strfreev(lines);
  85         contentlength = sipmsg_find_header(msg, "Content-Length");
  86         if (contentlength) {
  87                 msg->bodylen = strtol(contentlength,NULL,10);
  88         } else {
  89                 const gchar *tmp = sipmsg_find_header(msg, "Transfer-Encoding");
  90                 if (tmp && sipe_strcase_equal(tmp, "chunked")) {
  91                         msg->bodylen = SIPMSG_BODYLEN_CHUNKED;
  92                 } else {
  93                         SIPE_DEBUG_FATAL_NOFORMAT("sipmsg_parse_header(): Content-Length header not found");
  94                 }
  95         }
  96         if(msg->response) {
  97                 const gchar *tmp;
  98                 tmp = sipmsg_find_header(msg, "CSeq");
  99                 if(!tmp) {
 100                         /* SHOULD NOT HAPPEN */
 101                         msg->method = 0;
 102                 } else {
 103                         parts = g_strsplit(tmp, " ", 2);
 104                         msg->method = g_strdup(parts[1]);
 105                         g_strfreev(parts);
 106                 }
 107         }
 108         return msg;
 109 }
 110
 111 struct sipmsg *sipmsg_copy(const struct sipmsg *other) {
 112         struct sipmsg *msg = g_new0(struct sipmsg, 1);
 113         GSList *list;
 114
 115         msg->response           = other->response;
 116         msg->responsestr        = g_strdup(other->responsestr);
 117         msg->method             = g_strdup(other->method);
 118         msg->target             = g_strdup(other->target);
 119
 120         list = other->headers;
 121         while(list) {
 122                 struct sipnameval *elem = list->data;
 123                 sipmsg_add_header_now(msg, elem->name, elem->value);
 124                 list = list->next;
 125         }
 126
 127         list = other->new_headers;
 128         while(list) {
 129                 struct sipnameval *elem = list->data;
 130                 sipmsg_add_header(msg, elem->name, elem->value);
 131                 list = list->next;
 132         }
 133
 134         msg->bodylen    = other->bodylen;
 135         msg->body       = g_strdup(other->body);
 136         msg->signature  = g_strdup(other->signature);
 137         msg->rand       = g_strdup(other->rand);
 138         msg->num        = g_strdup(other->num);
 139
 140         return msg;
 141 }
 142
 143 char *sipmsg_to_string(const struct sipmsg *msg) {
 144         GSList *cur;
 145         GString *outstr = g_string_new("");
 146         struct sipnameval *elem;
 147
 148         if(msg->response)
 149                 g_string_append_printf(outstr, "SIP/2.0 %d Unknown\r\n",
 150                         msg->response);
 151         else
 152                 g_string_append_printf(outstr, "%s %s SIP/2.0\r\n",
 153                         msg->method, msg->target);
 154
 155         cur = msg->headers;
 156         while(cur) {
 157                 elem = cur->data;
 158                 /*Todo: remove the LFCR in a good way*/
 159                 /*if(sipe_strequal(elem->name,"Proxy-Authorization"))
 160                   g_string_append_printf(outstr, "%s: %s", elem->name,
 161                         elem->value);
 162                 else     */
 163                    g_string_append_printf(outstr, "%s: %s\r\n", elem->name,
 164                         elem->value);
 165                 cur = g_slist_next(cur);
 166         }
 167
 168         g_string_append_printf(outstr, "\r\n%s", msg->bodylen ? msg->body : "");
 169
 170         return g_string_free(outstr, FALSE);
 171 }
 172
 173 /**
 174  * Adds header to current message headers at specified position
 175  */
 176 void sipmsg_add_header_now_pos(struct sipmsg *msg, const gchar *name, const gchar *value, int pos) {
 177         struct sipnameval *element = g_new0(struct sipnameval,1);
 178
 179         /* SANITY CHECK: the calling code must be fixed if this happens! */
 180         if (!value) {
 181                 SIPE_DEBUG_ERROR("sipmsg_add_header_now_pos: NULL value for %s (%d)",
 182                                  name, pos);
 183                 value = "";
 184         }
 185
 186         element->name = g_strdup(name);
 187         element->value = g_strdup(value);
 188         msg->headers = g_slist_insert(msg->headers, element,pos);
 189 }
 190
 191 /**
 192  * Adds header to current message headers
 193  */
 194 void sipmsg_add_header_now(struct sipmsg *msg, const gchar *name, const gchar *value) {
 195         struct sipnameval *element = g_new0(struct sipnameval,1);
 196
 197         /* SANITY CHECK: the calling code must be fixed if this happens! */
 198         if (!value) {
 199                 SIPE_DEBUG_ERROR("sipmsg_add_header_now: NULL value for %s",
 200                                  name);
 201                 value = "";
 202         }
 203
 204         element->name = g_strdup(name);
 205         element->value = g_strdup(value);
 206         msg->headers = g_slist_append(msg->headers, element);
 207 }
 208
 209 /**
 210  * Adds header to separate storage for future merge
 211  */
 212 void sipmsg_add_header(struct sipmsg *msg, const gchar *name, const gchar *value) {
 213         struct sipnameval *element = g_new0(struct sipnameval,1);
 214
 215         /* SANITY CHECK: the calling code must be fixed if this happens! */
 216         if (!value) {
 217                 SIPE_DEBUG_ERROR("sipmsg_add_header: NULL value for %s", name);
 218                 value = "";
 219         }
 220
 221         element->name = g_strdup(name);
 222         element->value = g_strdup(value);
 223         msg->new_headers = g_slist_append(msg->new_headers, element);
 224 }
 225
 226 /**
 227  * Removes header if it's not in keepers array
 228  */
 229 void sipmsg_strip_headers(struct sipmsg *msg, const gchar *keepers[]) {
 230         GSList *entry;
 231         struct sipnameval *elem;
 232
 233         entry = msg->headers;
 234         while(entry) {
 235                 int i = 0;
 236                 gboolean keeper = FALSE;
 237
 238                 elem = entry->data;
 239                 while (keepers[i]) {
 240                         if (!g_ascii_strcasecmp(elem->name, keepers[i])) {
 241                                 keeper = TRUE;
 242                                 break;
 243                         }
 244                         i++;
 245                 }
 246
 247                 if (!keeper) {
 248                         GSList *to_delete = entry;
 249                         SIPE_DEBUG_INFO("sipmsg_strip_headers: removing %s", elem->name);
 250                         entry = g_slist_next(entry);
 251                         msg->headers = g_slist_delete_link(msg->headers, to_delete);
 252                         g_free(elem->name);
 253                         g_free(elem->value);
 254                         g_free(elem);
 255                 } else {
 256                         entry = g_slist_next(entry);
 257                 }
 258         }
 259 }
 260
 261 /**
 262  * Merges newly added headers to message
 263  */
 264 void sipmsg_merge_new_headers(struct sipmsg *msg) {
 265         while(msg->new_headers) {
 266                 msg->headers = g_slist_append(msg->headers, msg->new_headers->data);
 267                 msg->new_headers = g_slist_remove(msg->new_headers, msg->new_headers->data);
 268         }
 269 }
 270
 271 void sipmsg_free(struct sipmsg *msg) {
 272         if (msg) {
 273                 sipe_utils_nameval_free(msg->headers);
 274                 sipe_utils_nameval_free(msg->new_headers);
 275                 g_free(msg->signature);
 276                 g_free(msg->rand);
 277                 g_free(msg->num);
 278                 g_free(msg->responsestr);
 279                 g_free(msg->method);
 280                 g_free(msg->target);
 281                 g_free(msg->body);
 282                 g_free(msg);
 283         }
 284 }
 285
 286 void sipmsg_remove_header_now(struct sipmsg *msg, const gchar *name) {
 287         struct sipnameval *elem;
 288         GSList *tmp = msg->headers;
 289         while(tmp) {
 290                 elem = tmp->data;
 291                 // OCS2005 can send the same header in either all caps or mixed case
 292                 if (sipe_strcase_equal(elem->name, name)) {
 293                         msg->headers = g_slist_remove(msg->headers, elem);
 294                         g_free(elem->name);
 295                         g_free(elem->value);
 296                         g_free(elem);
 297                         return;
 298                 }
 299                 tmp = g_slist_next(tmp);
 300         }
 301         return;
 302 }
 303
 304 const gchar *sipmsg_find_header(const struct sipmsg *msg, const gchar *name) {
 305         return sipe_utils_nameval_find_instance (msg->headers, name, 0);
 306 }
 307
 308 const gchar *sipmsg_find_header_instance(const struct sipmsg *msg, const gchar *name, int which) {
 309         return sipe_utils_nameval_find_instance(msg->headers, name, which);
 310 }
 311
 312 gchar *sipmsg_find_part_of_header(const char *hdr, const char * before, const char * after, const char * def) {
 313         const char *tmp;
 314         const char *tmp2;
 315         gchar *res2;
 316         if (!hdr) {
 317                 return NULL;
 318         }
 319
 320         //printf("partof %s w/ %s before and %s after\n", hdr, before, after);
 321
 322         tmp = before == NULL ? hdr : strstr(hdr, before);
 323         if (!tmp) {
 324                 //printf ("not found, returning null\n");
 325                 return (gchar *)def;
 326         }
 327
 328         if (before != NULL) {
 329                 tmp += strlen(before);
 330                 //printf ("tmp now %s\n", tmp);
 331         }
 332
 333         if (after != NULL && (tmp2 = strstr(tmp, after))) {
 334                 gchar * res = g_strndup(tmp, tmp2 - tmp);
 335                 //printf("returning %s\n", res);
 336                 return res;
 337         }
 338         res2 = g_strdup(tmp);
 339         //printf("returning %s\n", res2);
 340         return res2;
 341 }
 342
 343 int sipmsg_parse_cseq(struct sipmsg *msg)
 344 {
 345         int res = -1;
 346         gchar **items;
 347         items = g_strsplit(sipmsg_find_header(msg, "CSeq"), " ", 1);
 348         if (items[0]) {
 349                 res = atoi(items[0]);
 350         }
 351         g_strfreev(items);
 352         return res;
 353 }
 354
 355 /**
 356  * Parse EndPoints header from INVITE request
 357  * Returns a list of end points: contact URI plus optional epid.
 358  * You must free the values and the list.
 359  *
 360  * Example headers:
 361  * EndPoints: "alice alisson" <sip:alice@atlanta.local>, <sip:bob@atlanta.local>;epid=ebca82d94d, <sip:carol@atlanta.local>
 362  * EndPoints: "alice, alisson" <sip:alice@atlanta.local>, <sip:bob@atlanta.local>
 363  * EndPoints: "alice alisson" <sip:alice@atlanta.local>, "Super, Man" <sip:super@atlanta.local>
 364  *
 365  * @param header (in) EndPoints header contents
 366  *
 367  * @return GSList with struct sipendpoint as elements
 368  */
 369 GSList *sipmsg_parse_endpoints_header(const gchar *header)
 370 {
 371         GSList *list = NULL;
 372         gchar **parts = g_strsplit(header, ",", 0);
 373         gchar *part;
 374         int i;
 375
 376         for (i = 0; (part = parts[i]) != NULL; i++) {
 377                 /* Does the part contain a URI? */
 378                 gchar *contact = sipmsg_find_part_of_header(part, "<", ">", NULL);
 379                 if (contact) {
 380                         struct sipendpoint *end_point = g_new(struct sipendpoint, 1);
 381                         end_point->contact = contact;
 382                         end_point->epid = sipmsg_find_part_of_header(part, "epid=", NULL, NULL);
 383                         list = g_slist_append(list, end_point);
 384                 }
 385         }
 386         g_strfreev(parts);
 387
 388         return(list);
 389 }
 390
 391 void sipmsg_parse_p_asserted_identity(const gchar *header, gchar **sip_uri,
 392                                       gchar **tel_uri) {
 393         gchar **parts, **p;
 394
 395         *sip_uri = NULL;
 396         *tel_uri = NULL;
 397
 398         if (g_ascii_strncasecmp(header, "tel:", 4) == 0) {
 399                 *tel_uri = g_strdup(header);
 400                 return;
 401         }
 402
 403         parts = g_strsplit(header, ",", 0);
 404
 405         for (p = parts; *p; p++) {
 406                 gchar *uri = sipmsg_find_part_of_header(*p, "<", ">", NULL);
 407                 if (!uri)
 408                         continue;
 409
 410                 if (g_ascii_strncasecmp(uri, "sip:", 4) == 0) {
 411                         if (*sip_uri) {
 412                                 SIPE_DEBUG_WARNING_NOFORMAT("More than one "
 413                                         "sip: URI found in P-Asserted-Identity!");
 414                         } else {
 415                                 *sip_uri = uri;
 416                                 uri = NULL;
 417                         }
 418                 } else if (g_ascii_strncasecmp(uri, "tel:", 4) == 0){
 419                         if (*tel_uri) {
 420                                 SIPE_DEBUG_WARNING_NOFORMAT("More than one "
 421                                         "tel: URI found in P-Asserted-Identity!");
 422                         } else {
 423                                 *tel_uri = uri;
 424                                 uri = NULL;
 425                         }
 426                 }
 427
 428                 g_free(uri);
 429         }
 430
 431         g_strfreev(parts);
 432 }
 433
 434 /*
 435  *  sipmsg_find_auth_header will return the particular WWW-Authenticate
 436  *  header specified by *name.
 437  *
 438  *  Use this function when you want to look for a specific authentication
 439  *  method such as NTLM or Kerberos
 440  */
 441
 442 const gchar *sipmsg_find_auth_header(struct sipmsg *msg, const gchar *name) {
 443         GSList *tmp;
 444         struct sipnameval *elem;
 445         int name_len = strlen(name);
 446         tmp = msg->headers;
 447         while(tmp) {
 448                 elem = tmp->data;
 449                 /* SIPE_DEBUG_INFO("Current header: %s", elem->value); */
 450                 if (elem && elem->name &&
 451                     (sipe_strcase_equal(elem->name,"WWW-Authenticate") ||
 452                      sipe_strcase_equal(elem->name,"Authentication-Info")) ) {
 453                         if (!g_ascii_strncasecmp((gchar *)elem->value, name, name_len)) {
 454                                 /* SIPE_DEBUG_INFO("elem->value: %s", elem->value); */
 455                                 return elem->value;
 456                         }
 457                 }
 458                 /* SIPE_DEBUG_INFO_NOFORMAT("moving to next header"); */
 459                 tmp = g_slist_next(tmp);
 460         }
 461         SIPE_DEBUG_INFO("auth header '%s' not found.", name);
 462         return NULL;
 463 }
 464
 465 /**
 466  * Parses headers-like 'msgr' attribute of INVITE's 'ms_text_format' header.
 467  * Then retrieves value of 'X-MMS-IM-Format'.
 468
 469  * 'msgr' typically looks like:
 470  * X-MMS-IM-Format: FN=Microsoft%20Sans%20Serif; EF=BI; CO=800000; CS=0; PF=22
 471  */
 472 static gchar *sipmsg_get_x_mms_im_format(gchar *msgr) {
 473         gchar *msgr2;
 474         gsize msgr_dec64_len;
 475         guchar *msgr_dec64;
 476         gchar *msgr_utf8;
 477         gchar **lines;
 478         gchar **parts;
 479         gchar *x_mms_im_format;
 480         gchar *tmp;
 481
 482         if (!msgr) return NULL;
 483         msgr2 = g_strdup(msgr);
 484         while (strlen(msgr2) % 4 != 0) {
 485                 gchar *tmp_msgr2 = msgr2;
 486                 msgr2 = g_strdup_printf("%s=", msgr2);
 487                 g_free(tmp_msgr2);
 488         }
 489         msgr_dec64 = g_base64_decode(msgr2, &msgr_dec64_len);
 490         msgr_utf8 = g_convert((gchar *) msgr_dec64, msgr_dec64_len, "UTF-8", "UTF-16LE", NULL, NULL, NULL);
 491         g_free(msgr_dec64);
 492         g_free(msgr2);
 493         lines = g_strsplit(msgr_utf8,"\r\n\r\n",0);
 494         g_free(msgr_utf8);
 495         //@TODO: make extraction like parsing of message headers.
 496         parts = g_strsplit(lines[0],"X-MMS-IM-Format:",0);
 497         x_mms_im_format = g_strdup(parts[1]);
 498         g_strfreev(parts);
 499         g_strfreev(lines);
 500         tmp = x_mms_im_format;
 501         if (x_mms_im_format) {
 502                 while(*x_mms_im_format==' ' || *x_mms_im_format=='\t') x_mms_im_format++;
 503         }
 504         x_mms_im_format = g_strdup(x_mms_im_format);
 505         g_free(tmp);
 506         return x_mms_im_format;
 507 }
 508
 509 gchar *sipmsg_get_msgr_string(gchar *x_mms_im_format) {
 510         gchar *msgr_orig;
 511         gsize msgr_utf16_len;
 512         gchar *msgr_utf16;
 513         gchar *msgr_enc;
 514         gchar *res;
 515         int len;
 516
 517         if (!x_mms_im_format) return NULL;
 518         msgr_orig = g_strdup_printf("X-MMS-IM-Format: %s\r\n\r\n", x_mms_im_format);
 519         msgr_utf16 = g_convert(msgr_orig, -1, "UTF-16LE", "UTF-8", NULL, &msgr_utf16_len, NULL);
 520         g_free(msgr_orig);
 521         msgr_enc = g_base64_encode((guchar *) msgr_utf16, msgr_utf16_len);
 522         g_free(msgr_utf16);
 523         len = strlen(msgr_enc);
 524         while (msgr_enc[len - 1] == '=') len--;
 525         res = g_strndup(msgr_enc, len);
 526         g_free(msgr_enc);
 527         return res;
 528 }
 529
 530 static void msn_parse_format(const char *mime, char **pre_ret, char **post_ret);
 531
 532 /**
 533  * Translates X-MMS-IM format to HTML presentation.
 534  */
 535 static gchar *sipmsg_apply_x_mms_im_format(const char *x_mms_im_format, gchar *body) {
 536         char *pre, *post;
 537         gchar *res;
 538
 539         if (!x_mms_im_format) {
 540                 return body ? g_strdup(body) : NULL;
 541         }
 542         msn_parse_format(x_mms_im_format, &pre, &post);
 543         res = g_strdup_printf("%s%s%s", pre ? pre :  "", body ? body : "", post ? post : "");
 544         g_free(pre);
 545         g_free(post);
 546         return res;
 547 }
 548
 549 struct html_message_data {
 550         gchar *ms_text_format;
 551         gchar *body;
 552         gboolean preferred;
 553 };
 554
 555 static void get_html_message_mime_cb(gpointer user_data,
 556                                      const GSList *fields,
 557                                      const gchar *body,
 558                                      gsize length)
 559 {
 560         const gchar *type = sipe_utils_nameval_find(fields, "Content-Type");
 561         struct html_message_data *data = user_data;
 562
 563         if (!data->preferred) {
 564                 gboolean copy = FALSE;
 565
 566                 /* preferred format */
 567                 if (g_str_has_prefix(type, "text/html")) {
 568                         copy = TRUE;
 569                         data->preferred = TRUE;
 570
 571                 /* fallback format */
 572                 } else if (g_str_has_prefix(type, "text/plain")) {
 573                         copy = TRUE;
 574                 }
 575
 576                 if (copy) {
 577                         g_free(data->ms_text_format);
 578                         g_free(data->body);
 579                         data->ms_text_format = g_strdup(type);
 580                         data->body = g_strndup(body, length);
 581                 }
 582         }
 583 }
 584
 585 /* ms-text-format: text/plain; charset=UTF-8;msgr=WAAtAE0...DIADQAKAA0ACgA;ms-body=SGk= */
 586 gchar *get_html_message(const gchar *ms_text_format_in, const gchar *body_in)
 587 {
 588         gchar *msgr;
 589         gchar *res;
 590         gchar *ms_text_format = NULL;
 591         gchar *body = NULL;
 592
 593         if (g_str_has_prefix(ms_text_format_in, "multipart/related") ||
 594             g_str_has_prefix(ms_text_format_in, "multipart/alternative")) {
 595                 struct html_message_data data = { NULL, NULL, FALSE };
 596
 597                 sipe_mime_parts_foreach(ms_text_format_in, body_in,
 598                                         get_html_message_mime_cb, &data);
 599
 600                 ms_text_format = data.ms_text_format;
 601                 body = data.body;
 602
 603         } else {
 604                 ms_text_format = g_strdup(ms_text_format_in);
 605                 body = g_strdup(body_in);
 606         }
 607
 608         if (body) {
 609                 res = body;
 610         } else {
 611                 gchar *tmp = sipmsg_find_part_of_header(ms_text_format, "ms-body=", NULL, NULL);
 612                 gsize len;
 613                 if (!tmp) {
 614                         g_free(ms_text_format);
 615                         return NULL;
 616                 }
 617                 res = (gchar *) g_base64_decode(tmp, &len);
 618                 g_free(tmp);
 619                 if (!res) {
 620                         g_free(ms_text_format);
 621                         return NULL;
 622                 }
 623         }
 624
 625         if (g_str_has_prefix(ms_text_format, "text/html")) {
 626                 /*
 627                  * HTML uses tags for formatting, not line breaks. But
 628                  * clients still might render them, so we need to remove
 629                  * them to avoid incorrect text rendering.
 630                  */
 631                 gchar *d = res;
 632                 const gchar *s = res;
 633                 gchar c;
 634
 635                 /* No ANSI C nor glib function seems to exist for this :-( */
 636                 while ((c = *s++))
 637                         if ((c != '\n') && (c != '\r'))
 638                                 *d++ = c;
 639                 *d = c;
 640
 641         } else {
 642                 char *tmp = res;
 643                 res = g_markup_escape_text(res, -1); // as this is not html
 644                 g_free(tmp);
 645         }
 646
 647         msgr = sipmsg_find_part_of_header(ms_text_format, "msgr=", ";", NULL);
 648         if (msgr) {
 649                 gchar *x_mms_im_format = sipmsg_get_x_mms_im_format(msgr);
 650                 gchar *tmp = res;
 651                 g_free(msgr);
 652                 res = sipmsg_apply_x_mms_im_format(x_mms_im_format, res);
 653                 g_free(tmp);
 654                 g_free(x_mms_im_format);
 655         }
 656
 657         g_free(ms_text_format);
 658
 659         return res;
 660 }
 661
 662 static gchar *
 663 get_reason(struct sipmsg *msg, const gchar *header)
 664 {
 665         const gchar *diagnostics = sipmsg_find_header(msg, header);
 666         if (diagnostics)
 667                 return sipmsg_find_part_of_header(diagnostics, "reason=\"", "\"", NULL);
 668
 669         return NULL;
 670 }
 671
 672 gchar *
 673 sipmsg_get_ms_diagnostics_reason(struct sipmsg *msg)
 674 {
 675         return get_reason(msg, "ms-diagnostics");
 676 }
 677
 678 gchar *
 679 sipmsg_get_ms_diagnostics_public_reason(struct sipmsg *msg)
 680 {
 681         return get_reason(msg, "ms-diagnostics-public");
 682 }
 683
 684 int
 685 sipmsg_parse_warning(struct sipmsg *msg, gchar **reason)
 686 {
 687         /*
 688          * Example header:
 689          * Warning: 310 lcs.microsoft.com "You are currently not using the recommended version of the client"
 690          */
 691         const gchar *hdr = sipmsg_find_header(msg, "Warning");
 692         int code = -1;
 693
 694         if (reason)
 695                 *reason = NULL;
 696
 697         if (hdr) {
 698                 gchar **parts = g_strsplit(hdr, " ", 3);
 699
 700                 if (parts[0]) {
 701                         code = atoi(parts[0]);
 702
 703                         if (reason && parts[1] && parts[2]) {
 704                                 size_t len = strlen(parts[2]);
 705                                 if (len > 2 && parts[2][0] == '"' && parts[2][len - 1] == '"')
 706                                         *reason = g_strndup(parts[2] + 1, len - 2);
 707                         }
 708                 }
 709
 710                 g_strfreev(parts);
 711         }
 712
 713         return code;
 714 }
 715
 716
 717
 718 //------------------------------------------------------------------------------------------
 719 //TEMP solution to include it here (copy from purple's msn protocol
 720 //How to reuse msn's util methods from sipe?
 721
 722 /* from internal.h */
 723 #define MSG_LEN 2048
 724 #define BUF_LEN MSG_LEN
 725
 726 void
 727 msn_parse_format(const char *mime, char **pre_ret, char **post_ret)
 728 {
 729         char *cur;
 730         GString *pre  = g_string_new(NULL);
 731         GString *post = g_string_new(NULL);
 732         unsigned int colors[3];
 733
 734         if (pre_ret  != NULL) *pre_ret  = NULL;
 735         if (post_ret != NULL) *post_ret = NULL;
 736
 737         cur = strstr(mime, "FN=");
 738
 739         if (cur && (*(cur = cur + 3) != ';'))
 740         {
 741                 pre = g_string_append(pre, "<FONT FACE=\"");
 742
 743                 while (*cur && *cur != ';')
 744                 {
 745                         pre = g_string_append_c(pre, *cur);
 746                         cur++;
 747                 }
 748
 749                 pre = g_string_append(pre, "\">");
 750                 post = g_string_prepend(post, "</FONT>");
 751         }
 752
 753         cur = strstr(mime, "EF=");
 754
 755         if (cur && (*(cur = cur + 3) != ';'))
 756         {
 757                 while (*cur && *cur != ';')
 758                 {
 759                         pre = g_string_append_c(pre, '<');
 760                         pre = g_string_append_c(pre, *cur);
 761                         pre = g_string_append_c(pre, '>');
 762                         post = g_string_prepend_c(post, '>');
 763                         post = g_string_prepend_c(post, *cur);
 764                         post = g_string_prepend_c(post, '/');
 765                         post = g_string_prepend_c(post, '<');
 766                         cur++;
 767                 }
 768         }
 769
 770         cur = strstr(mime, "CO=");
 771
 772         if (cur && (*(cur = cur + 3) != ';'))
 773         {
 774                 int i;
 775
 776                 i = sscanf(cur, "%02x%02x%02x;", &colors[0], &colors[1], &colors[2]);
 777
 778                 if (i > 0)
 779                 {
 780                         char tag[64];
 781
 782                         if (i == 1)
 783                         {
 784                                 colors[1] = 0;
 785                                 colors[2] = 0;
 786                         }
 787                         else if (i == 2)
 788                         {
 789                                 unsigned int temp = colors[0];
 790
 791                                 colors[0] = colors[1];
 792                                 colors[1] = temp;
 793                                 colors[2] = 0;
 794                         }
 795                         else if (i == 3)
 796                         {
 797                                 unsigned int temp = colors[2];
 798
 799                                 colors[2] = colors[0];
 800                                 colors[0] = temp;
 801                         }
 802
 803                         /* hh is undefined in mingw's gcc 4.4
 804                          *  https://sourceforge.net/tracker/index.php?func=detail&aid=2818436&group_id=2435&atid=102435
 805                          */
 806                         g_snprintf(tag, sizeof(tag),
 807                                            "<FONT COLOR=\"#%02x%02x%02x\">",
 808                                            (unsigned char)colors[0], (unsigned char)colors[1], (unsigned char)colors[2]);
 809
 810                         pre = g_string_append(pre, tag);
 811                         post = g_string_prepend(post, "</FONT>");
 812                 }
 813         }
 814
 815         cur = strstr(mime, "RL=");
 816
 817         if (cur && (*(cur = cur + 3) != ';'))
 818         {
 819                 if (*cur == '1')
 820                 {
 821                         /* RTL text was received */
 822                         pre = g_string_append(pre, "<SPAN style=\"direction:rtl;text-align:right;\">");
 823                         post = g_string_prepend(post, "</SPAN>");
 824                 }
 825         }
 826
 827         cur = sipe_utils_uri_unescape(pre->str);
 828         g_string_free(pre, TRUE);
 829
 830         if (pre_ret != NULL)
 831                 *pre_ret = cur;
 832         else
 833                 g_free(cur);
 834
 835         cur = sipe_utils_uri_unescape(post->str);
 836         g_string_free(post, TRUE);
 837
 838         if (post_ret != NULL)
 839                 *post_ret = cur;
 840         else
 841                 g_free(cur);
 842 }
 843
 844 static const char *
 845 encode_spaces(const char *str)
 846 {
 847         static char buf[BUF_LEN];
 848         const char *c;
 849         char *d;
 850
 851         g_return_val_if_fail(str != NULL, NULL);
 852
 853         for (c = str, d = buf; *c != '\0'; c++)
 854         {
 855                 if (*c == ' ')
 856                 {
 857                         *d++ = '%';
 858                         *d++ = '2';
 859                         *d++ = '0';
 860                 }
 861                 else
 862                         *d++ = *c;
 863         }
 864         *d = '\0';
 865
 866         return buf;
 867 }
 868
 869 void
 870 sipe_parse_html(const char *html, char **attributes, char **message)
 871 {
 872         int len, retcount = 0;
 873         const char *c;
 874         char *msg;
 875         char *fontface = NULL;
 876         char fonteffect[4];
 877         char fontcolor[7];
 878         char direction = '0';
 879
 880         gboolean has_bold = FALSE;
 881         gboolean has_italic = FALSE;
 882         gboolean has_underline = FALSE;
 883         gboolean has_strikethrough = FALSE;
 884
 885         g_return_if_fail(html       != NULL);
 886         g_return_if_fail(attributes != NULL);
 887         g_return_if_fail(message    != NULL);
 888
 889         len = strlen(html);
 890         msg = g_malloc0(len + 1);
 891
 892         memset(fontcolor, 0, sizeof(fontcolor));
 893         strcat(fontcolor, "0");
 894         memset(fonteffect, 0, sizeof(fonteffect));
 895
 896         for (c = html; *c != '\0';)
 897         {
 898                 if (*c == '<')
 899                 {
 900                         if (!g_ascii_strncasecmp(c + 1, "br>", 3))
 901                         {
 902                                 msg[retcount++] = '\r';
 903                                 msg[retcount++] = '\n';
 904                                 c += 4;
 905                         }
 906                         else if (!g_ascii_strncasecmp(c + 1, "i>", 2))
 907                         {
 908                                 if (!has_italic)
 909                                 {
 910                                         strcat(fonteffect, "I");
 911                                         has_italic = TRUE;
 912                                 }
 913                                 c += 3;
 914                         }
 915                         else if (!g_ascii_strncasecmp(c + 1, "b>", 2))
 916                         {
 917                                 if (!has_bold)
 918                                 {
 919                                         strcat(fonteffect, "B");
 920                                         has_bold = TRUE;
 921                                 }
 922                                 c += 3;
 923                         }
 924                         else if (!g_ascii_strncasecmp(c + 1, "u>", 2))
 925                         {
 926                                 if (!has_underline)
 927                                 {
 928                                         strcat(fonteffect, "U");
 929                                         has_underline = TRUE;
 930                                 }
 931                                 c += 3;
 932                         }
 933                         else if (!g_ascii_strncasecmp(c + 1, "s>", 2))
 934                         {
 935                                 if (!has_strikethrough)
 936                                 {
 937                                         strcat(fonteffect, "S");
 938                                         has_strikethrough = TRUE;
 939                                 }
 940                                 c += 3;
 941                         }
 942                         else if (!g_ascii_strncasecmp(c + 1, "a href=\"", 8))
 943                         {
 944                                 c += 9;
 945
 946                                 if (!g_ascii_strncasecmp(c, "mailto:", 7))
 947                                         c += 7;
 948
 949                                 while ((*c != '\0') && g_ascii_strncasecmp(c, "\">", 2))
 950                                         msg[retcount++] = *c++;
 951
 952                                 if (*c != '\0')
 953                                         c += 2;
 954
 955                                 /* ignore descriptive string */
 956                                 while ((*c != '\0') && g_ascii_strncasecmp(c, "</a>", 4))
 957                                         c++;
 958
 959                                 if (*c != '\0')
 960                                         c += 4;
 961                         }
 962                         else if (!g_ascii_strncasecmp(c + 1, "span", 4))
 963                         {
 964                                 /* Bi-directional text support using CSS properties in span tags */
 965                                 c += 5;
 966
 967                                 while (*c != '\0' && *c != '>')
 968                                 {
 969                                         while (*c == ' ')
 970                                                 c++;
 971                                         if (!g_ascii_strncasecmp(c, "dir=\"rtl\"", 9))
 972                                         {
 973                                                 c += 9;
 974                                                 direction = '1';
 975                                         }
 976                                         else if (!g_ascii_strncasecmp(c, "style=\"", 7))
 977                                         {
 978                                                 /* Parse inline CSS attributes */
 979                                                 int attr_len = 0;
 980                                                 c += 7;
 981                                                 while (*(c + attr_len) != '\0' && *(c + attr_len) != '"')
 982                                                         attr_len++;
 983                                                 if (*(c + attr_len) == '"')
 984                                                 {
 985                                                         char *css_attributes;
 986                                                         char *attr_dir;
 987                                                         css_attributes = g_strndup(c, attr_len);
 988                                                         attr_dir = sipe_backend_markup_css_property(css_attributes, "direction");
 989                                                         g_free(css_attributes);
 990                                                         if (attr_dir && (!g_ascii_strncasecmp(attr_dir, "RTL", 3)))
 991                                                                 direction = '1';
 992                                                         g_free(attr_dir);
 993                                                 }
 994
 995                                         }
 996                                         else
 997                                         {
 998                                                 c++;
 999                                         }
1000                                 }
1001                                 if (*c == '>')
1002                                         c++;
1003                         }
1004                         else if (!g_ascii_strncasecmp(c + 1, "font", 4))
1005                         {
1006                                 c += 5;
1007
1008                                 while ((*c != '\0') && !g_ascii_strncasecmp(c, " ", 1))
1009                                         c++;
1010
1011                                 if (!g_ascii_strncasecmp(c, "color=\"#", 7))
1012                                 {
1013                                         c += 8;
1014
1015                                         fontcolor[0] = *(c + 4);
1016                                         fontcolor[1] = *(c + 5);
1017                                         fontcolor[2] = *(c + 2);
1018                                         fontcolor[3] = *(c + 3);
1019                                         fontcolor[4] = *c;
1020                                         fontcolor[5] = *(c + 1);
1021
1022                                         c += 8;
1023                                 }
1024                                 else if (!g_ascii_strncasecmp(c, "face=\"", 6))
1025                                 {
1026                                         const char *end = NULL;
1027                                         const char *comma = NULL;
1028                                         unsigned int namelen = 0;
1029
1030                                         c += 6;
1031                                         end = strchr(c, '\"');
1032                                         comma = strchr(c, ',');
1033
1034                                         if (comma == NULL || comma > end)
1035                                                 namelen = (unsigned int)(end - c);
1036                                         else
1037                                                 namelen = (unsigned int)(comma - c);
1038
1039                                         g_free(fontface);
1040                                         fontface = g_strndup(c, namelen);
1041                                         c = end + 2;
1042                                 }
1043                                 else
1044                                 {
1045                                         /* Drop all unrecognized/misparsed font tags */
1046                                         while ((*c != '\0') && g_ascii_strncasecmp(c, "\">", 2))
1047                                                 c++;
1048
1049                                         if (*c != '\0')
1050                                                 c += 2;
1051                                 }
1052                         }
1053                         else
1054                         {
1055                                 while ((*c != '\0') && (*c != '>'))
1056                                         c++;
1057                                 if (*c != '\0')
1058                                         c++;
1059                         }
1060                 }
1061                 else if (*c == '&')
1062                 {
1063                         if (!g_ascii_strncasecmp(c, "&lt;", 4))
1064                         {
1065                                 msg[retcount++] = '<';
1066                                 c += 4;
1067                         }
1068                         else if (!g_ascii_strncasecmp(c, "&gt;", 4))
1069                         {
1070                                 msg[retcount++] = '>';
1071                                 c += 4;
1072                         }
1073                         else if (!g_ascii_strncasecmp(c, "&nbsp;", 6))
1074                         {
1075                                 msg[retcount++] = ' ';
1076                                 c += 6;
1077                         }
1078                         else if (!g_ascii_strncasecmp(c, "&quot;", 6))
1079                         {
1080                                 msg[retcount++] = '"';
1081                                 c += 6;
1082                         }
1083                         else if (!g_ascii_strncasecmp(c, "&amp;", 5))
1084                         {
1085                                 msg[retcount++] = '&';
1086                                 c += 5;
1087                         }
1088                         else if (!g_ascii_strncasecmp(c, "&apos;", 6))
1089                         {
1090                                 msg[retcount++] = '\'';
1091                                 c += 6;
1092                         }
1093                         else
1094                                 msg[retcount++] = *c++;
1095                 }
1096                 else
1097                         msg[retcount++] = *c++;
1098         }
1099
1100         if (fontface == NULL)
1101                 fontface = g_strdup("MS Sans Serif");
1102
1103         *attributes = g_strdup_printf("FN=%s; EF=%s; CO=%s; PF=0; RL=%c",
1104                                                                   encode_spaces(fontface),
1105                                                                   fonteffect, fontcolor, direction);
1106         *message = msg;
1107
1108         g_free(fontface);
1109 }
1110 // End of TEMP
1111
1112 /*
1113   Local Variables:
1114   mode: c
1115   c-file-style: "bsd"
1116   indent-tabs-mode: t
1117   tab-width: 8
1118   End:
1119 */