webcit/messages.c

   1 /*
   2  * Functions which deal with the fetching and displaying of messages.
   3  *
   4  * Copyright (c) 1996-2012 by the citadel.org team
   5  *
   6  * This program is open source software.  You can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License, version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "webcit.h"
  16 #include "webserver.h"
  17 #include "dav.h"
  18 #include "calendar.h"
  19
  20 HashList *MimeRenderHandler = NULL;
  21 HashList *ReadLoopHandler = NULL;
  22 int dbg_analyze_msg = 0;
  23
  24 #define SUBJ_COL_WIDTH_PCT              50      /* Mailbox view column width */
  25 #define SENDER_COL_WIDTH_PCT            30      /* Mailbox view column width */
  26 #define DATE_PLUS_BUTTONS_WIDTH_PCT     20      /* Mailbox view column width */
  27
  28 void jsonMessageListHdr(void);
  29
  30 void display_enter(void);
  31
  32 void fixview()
  33 {
  34         /* workaround for json listview; its not useable directly */
  35         if (WC->CurRoom.view == VIEW_JSON_LIST) {
  36                 StrBuf *View = NewStrBuf();
  37                 StrBufPrintf(View, "%d", VIEW_MAILBOX);
  38                 putbstr("view", View);;
  39         }
  40 }
  41 int load_message(message_summary *Msg,
  42                  StrBuf *FoundCharset,
  43                  StrBuf **Error)
  44 {
  45         StrBuf *Buf;
  46         StrBuf *HdrToken;
  47         char buf[SIZ];
  48         int Done = 0;
  49         int state=0;
  50         int rc;
  51
  52         Buf = NewStrBuf();
  53         if (Msg->PartNum != NULL) {
  54                 serv_printf("MSG4 %ld|%s", Msg->msgnum, ChrPtr(Msg->PartNum));
  55         }
  56         else {
  57                 serv_printf("MSG4 %ld", Msg->msgnum);
  58         }
  59
  60         StrBuf_ServGetln(Buf);
  61         if (GetServerStatus(Buf, NULL) != 1) {
  62                 *Error = NewStrBuf();
  63                 StrBufAppendPrintf(*Error, "<strong>");
  64                 StrBufAppendPrintf(*Error, _("ERROR:"));
  65                 StrBufAppendPrintf(*Error, "</strong> %s<br>\n", &buf[4]);
  66                 FreeStrBuf(&Buf);
  67                 return 0;
  68         }
  69
  70         /* begin everythingamundo table */
  71         HdrToken = NewStrBuf();
  72         while (!Done && StrBuf_ServGetln(Buf)>=0) {
  73                 if ( (StrLength(Buf)==3) &&
  74                     !strcmp(ChrPtr(Buf), "000"))
  75                 {
  76                         Done = 1;
  77                         if (state < 2) {
  78                                 if (Msg->MsgBody->Data == NULL)
  79                                         Msg->MsgBody->Data = NewStrBuf();
  80                                 Msg->MsgBody->ContentType = NewStrBufPlain(HKEY("text/html"));
  81                                 StrBufAppendPrintf(Msg->MsgBody->Data, "<div><i>");
  82                                 StrBufAppendPrintf(Msg->MsgBody->Data, _("Empty message"));
  83                                 StrBufAppendPrintf(Msg->MsgBody->Data, "</i><br><br>\n");
  84                                 StrBufAppendPrintf(Msg->MsgBody->Data, "</div>\n");
  85                         }
  86                         break;
  87                 }
  88                 switch (state) {
  89                 case 0:/* Citadel Message Headers */
  90                         if (StrLength(Buf) == 0) {
  91                                 state ++;
  92                                 break;
  93                         }
  94                         StrBufExtract_token(HdrToken, Buf, 0, '=');
  95                         StrBufCutLeft(Buf, StrLength(HdrToken) + 1);
  96
  97                         /* look up one of the examine_* functions to parse the content */
  98                         rc =  EvaluateMsgHdr(SKEY(HdrToken), Msg, Buf, FoundCharset);
  99                         if (rc == 1) {
 100                                 state++;
 101                         }
 102                         /* TODO:
 103                         else LogError(Target,
 104                                       __FUNCTION__,
 105                                       "don't know how to handle message header[%s]\n",
 106                                       ChrPtr(HdrToken));
 107                          */
 108                         break;
 109                 case 1:/* Message Mime Header */
 110                         if (StrLength(Buf) == 0) {
 111                                 state++;
 112                                 if (Msg->MsgBody->ContentType == NULL)
 113                                         /* end of header or no header? */
 114                                         Msg->MsgBody->ContentType = NewStrBufPlain(HKEY("text/plain"));
 115                                  /* usual end of mime header */
 116                         }
 117                         else
 118                         {
 119                                 StrBufExtract_token(HdrToken, Buf, 0, ':');
 120                                 if (StrLength(HdrToken) > 0) {
 121                                         StrBufCutLeft(Buf, StrLength(HdrToken) + 1);
 122                                         /* the examine*'s know how to do with mime headers too... */
 123                                         EvaluateMsgHdr(SKEY(HdrToken), Msg, Buf, FoundCharset);
 124
 125                                         break;
 126                                 }
 127                         }
 128                 case 2: /* Message Body */
 129
 130                         if (Msg->MsgBody->size_known > 0) {
 131                                 StrBuf_ServGetBLOBBuffered(Msg->MsgBody->Data, Msg->MsgBody->length);
 132                                 state ++;
 133                                 /*/ todo: check next line, if not 000, append following lines */
 134                         }
 135                         else if (1){
 136                                 if (StrLength(Msg->MsgBody->Data) > 0)
 137                                         StrBufAppendBufPlain(Msg->MsgBody->Data, "\n", 1, 0);
 138                                 StrBufAppendBuf(Msg->MsgBody->Data, Buf, 0);
 139                         }
 140                         break;
 141                 case 3:
 142                         StrBufAppendBuf(Msg->MsgBody->Data, Buf, 0);
 143                         break;
 144                 }
 145         }
 146
 147         if (Msg->AllAttach == NULL)
 148                 Msg->AllAttach = NewHash(1,NULL);
 149         /* now we put the body mimepart we read above into the mimelist */
 150         Put(Msg->AllAttach, SKEY(Msg->MsgBody->PartNum), Msg->MsgBody, DestroyMime);
 151
 152         FreeStrBuf(&Buf);
 153         FreeStrBuf(&HdrToken);
 154         return 1;
 155 }
 156
 157
 158
 159 /*
 160  * I wanna SEE that message!
 161  *
 162  * msgnum               Message number to display
 163  * printable_view       Nonzero to display a printable view
 164  * section              Optional for encapsulated message/rfc822 submessage
 165  */
 166 int read_message(StrBuf *Target, const char *tmpl, long tmpllen, long msgnum, const StrBuf *PartNum, const StrBuf **OutMime, WCTemplputParams *TP)
 167 {
 168         StrBuf *Buf;
 169         StrBuf *FoundCharset;
 170         HashPos  *it;
 171         void *vMime;
 172         message_summary *Msg = NULL;
 173         void *vHdr;
 174         long len;
 175         const char *Key;
 176         WCTemplputParams SuperTP;
 177         WCTemplputParams SubTP;
 178         StrBuf *Error = NULL;
 179
 180         memset(&SuperTP, 0, sizeof(WCTemplputParams));
 181         memset(&SubTP, 0, sizeof(WCTemplputParams));
 182
 183         Buf = NewStrBuf();
 184         FoundCharset = NewStrBuf();
 185         Msg = (message_summary *)malloc(sizeof(message_summary));
 186         memset(Msg, 0, sizeof(message_summary));
 187         Msg->msgnum = msgnum;
 188         Msg->PartNum = PartNum;
 189         Msg->MsgBody =  (wc_mime_attachment*) malloc(sizeof(wc_mime_attachment));
 190         memset(Msg->MsgBody, 0, sizeof(wc_mime_attachment));
 191         Msg->MsgBody->msgnum = msgnum;
 192
 193         if (!load_message(Msg, FoundCharset, &Error)) {
 194                 StrBufAppendBuf(Target, Error, 0);
 195                 FreeStrBuf(&Error);
 196         }
 197
 198         /* Extract just the content-type (omit attributes such as "charset") */
 199         StrBufExtract_token(Buf, Msg->MsgBody->ContentType, 0, ';');
 200         StrBufTrim(Buf);
 201         StrBufLowerCase(Buf);
 202
 203         StackContext(TP, &SuperTP, Msg, CTX_MAILSUM, 0, NULL);
 204         {
 205                 /* Locate a renderer capable of converting this MIME part into HTML */
 206                 if (GetHash(MimeRenderHandler, SKEY(Buf), &vHdr) &&
 207                     (vHdr != NULL)) {
 208                         RenderMimeFuncStruct *Render;
 209
 210                         StackContext(&SuperTP, &SubTP, Msg->MsgBody, CTX_MIME_ATACH, 0, NULL);
 211                         {
 212                                 Render = (RenderMimeFuncStruct*)vHdr;
 213                                 Render->f(Target, &SubTP, FoundCharset);
 214                         }
 215                         UnStackContext(&SubTP);
 216                 }
 217
 218                 if (StrLength(Msg->reply_references)> 0) {
 219                         /* Trim down excessively long lists of thread references.  We eliminate the
 220                          * second one in the list so that the thread root remains intact.
 221                          */
 222                         int rrtok = num_tokens(ChrPtr(Msg->reply_references), '|');
 223                         int rrlen = StrLength(Msg->reply_references);
 224                         if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
 225                                 StrBufRemove_token(Msg->reply_references, 1, '|');
 226                         }
 227                 }
 228
 229                 /* now check if we need to translate some mimeparts, and remove the duplicate */
 230                 it = GetNewHashPos(Msg->AllAttach, 0);
 231                 while (GetNextHashPos(Msg->AllAttach, it, &len, &Key, &vMime) &&
 232                        (vMime != NULL)) {
 233                         StackContext(&SuperTP, &SubTP, vMime, CTX_MIME_ATACH, 0, NULL);
 234                         {
 235                                 evaluate_mime_part(Target, &SubTP);
 236                         }
 237                         UnStackContext(&SubTP);
 238                 }
 239                 DeleteHashPos(&it);
 240                 *OutMime = DoTemplate(tmpl, tmpllen, Target, &SuperTP);
 241         }
 242         UnStackContext(&SuperTP);
 243
 244         DestroyMessageSummary(Msg);
 245         FreeStrBuf(&FoundCharset);
 246         FreeStrBuf(&Buf);
 247         return 1;
 248 }
 249
 250
 251 long
 252 HttpStatus(long CitadelStatus)
 253 {
 254         long httpstatus = 502;
 255
 256         switch (MAJORCODE(CitadelStatus))
 257         {
 258         case LISTING_FOLLOWS:
 259         case CIT_OK:
 260                 httpstatus = 201;
 261                 break;
 262         case ERROR:
 263                 switch (MINORCODE(CitadelStatus))
 264                 {
 265                 case INTERNAL_ERROR:
 266                         httpstatus = 403;
 267                         break;
 268
 269                 case TOO_BIG:
 270                 case ILLEGAL_VALUE:
 271                 case HIGHER_ACCESS_REQUIRED:
 272                 case MAX_SESSIONS_EXCEEDED:
 273                 case RESOURCE_BUSY:
 274                 case RESOURCE_NOT_OPEN:
 275                 case NOT_HERE:
 276                 case INVALID_FLOOR_OPERATION:
 277                 case FILE_NOT_FOUND:
 278                 case ROOM_NOT_FOUND:
 279                         httpstatus = 409;
 280                         break;
 281
 282                 case MESSAGE_NOT_FOUND:
 283                 case ALREADY_EXISTS:
 284                         httpstatus = 403;
 285                         break;
 286
 287                 case NO_SUCH_SYSTEM:
 288                         httpstatus = 502;
 289                         break;
 290
 291                 default:
 292                 case CMD_NOT_SUPPORTED:
 293                 case PASSWORD_REQUIRED:
 294                 case ALREADY_LOGGED_IN:
 295                 case USERNAME_REQUIRED:
 296                 case NOT_LOGGED_IN:
 297                 case SERVER_SHUTTING_DOWN:
 298                 case NO_SUCH_USER:
 299                 case ASYNC_GEXP:
 300                         httpstatus = 502;
 301                         break;
 302                 }
 303                 break;
 304
 305         default:
 306         case BINARY_FOLLOWS:
 307         case SEND_BINARY:
 308         case START_CHAT_MODE:
 309         case ASYNC_MSG:
 310         case MORE_DATA:
 311         case SEND_LISTING:
 312                 httpstatus = 502; /* aeh... whut? */
 313                 break;
 314         }
 315
 316         return httpstatus;
 317 }
 318
 319 /*
 320  * Unadorned HTML output of an individual message, suitable
 321  * for placing in a hidden iframe, for printing, or whatever
 322  */
 323 void handle_one_message(void)
 324 {
 325         long CitStatus = ERROR + NOT_HERE;
 326         int CopyMessage = 0;
 327         const StrBuf *Destination;
 328         void *vLine;
 329         const StrBuf *Mime;
 330         long msgnum = 0L;
 331         wcsession *WCC = WC;
 332         const StrBuf *Tmpl;
 333         StrBuf *CmdBuf = NULL;
 334         const char *pMsg;
 335
 336
 337         pMsg = strchr(ChrPtr(WCC->Hdr->HR.ReqLine), '/');
 338         if (pMsg == NULL) {
 339                 HttpStatus(CitStatus);
 340                 return;
 341         }
 342
 343         msgnum = atol(pMsg + 1);
 344         StrBufCutAt(WCC->Hdr->HR.ReqLine, 0, pMsg);
 345         gotoroom(WCC->Hdr->HR.ReqLine);
 346         switch (WCC->Hdr->HR.eReqType)
 347         {
 348         case eGET:
 349         case ePOST:
 350                 Tmpl = sbstr("template");
 351                 if (StrLength(Tmpl) > 0)
 352                         read_message(WCC->WBuf, SKEY(Tmpl), msgnum, NULL, &Mime, NULL);
 353                 else
 354                         read_message(WCC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime, NULL);
 355                 http_transmit_thing(ChrPtr(Mime), 0);
 356                 break;
 357         case eDELETE:
 358                 CmdBuf = NewStrBuf ();
 359                 if ((WCC->CurRoom.RAFlags & UA_ISTRASH) != 0) { /* Delete from Trash is a real delete */
 360                         serv_printf("DELE %ld", msgnum);
 361                 }
 362                 else {                  /* Otherwise move it to Trash */
 363                         serv_printf("MOVE %ld|_TRASH_|0", msgnum);
 364                 }
 365                 StrBuf_ServGetln(CmdBuf);
 366                 GetServerStatusMsg(CmdBuf, &CitStatus, 1, 0);
 367                 HttpStatus(CitStatus);
 368                 break;
 369         case eCOPY:
 370                 CopyMessage = 1;
 371         case eMOVE:
 372                 if (GetHash(WCC->Hdr->HTTPHeaders, HKEY("DESTINATION"), &vLine) &&
 373                     (vLine!=NULL)) {
 374                         Destination = (StrBuf*) vLine;
 375                         serv_printf("MOVE %ld|%s|%d", msgnum, ChrPtr(Destination), CopyMessage);
 376                         StrBuf_ServGetln(CmdBuf);
 377                         GetServerStatusMsg(CmdBuf, NULL, 1, 0);
 378                         GetServerStatus(CmdBuf, &CitStatus);
 379                         HttpStatus(CitStatus);
 380                 }
 381                 else
 382                         HttpStatus(500);
 383                 break;
 384         default:
 385                 break;
 386
 387         }
 388 }
 389
 390
 391 /*
 392  * Unadorned HTML output of an individual message, suitable
 393  * for placing in a hidden iframe, for printing, or whatever
 394  */
 395 void embed_message(void) {
 396         const StrBuf *Mime;
 397         long msgnum = 0L;
 398         wcsession *WCC = WC;
 399         const StrBuf *Tmpl;
 400         StrBuf *CmdBuf = NULL;
 401
 402         msgnum = StrBufExtract_long(WCC->Hdr->HR.ReqLine, 0, '/');
 403         if (msgnum <= 0) return;
 404
 405         switch (WCC->Hdr->HR.eReqType)
 406         {
 407         case eGET:
 408         case ePOST:
 409                 Tmpl = sbstr("template");
 410                 if (StrLength(Tmpl) > 0)
 411                         read_message(WCC->WBuf, SKEY(Tmpl), msgnum, NULL, &Mime, NULL);
 412                 else
 413                         read_message(WCC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime, NULL);
 414                 http_transmit_thing(ChrPtr(Mime), 0);
 415                 break;
 416         case eDELETE:
 417                 CmdBuf = NewStrBuf ();
 418                 if ((WCC->CurRoom.RAFlags & UA_ISTRASH) != 0) { /* Delete from Trash is a real delete */
 419                         serv_printf("DELE %ld", msgnum);
 420                 }
 421                 else {                  /* Otherwise move it to Trash */
 422                         serv_printf("MOVE %ld|_TRASH_|0", msgnum);
 423                 }
 424                 StrBuf_ServGetln(CmdBuf);
 425                 GetServerStatusMsg(CmdBuf, NULL, 1, 0);
 426                 break;
 427         default:
 428                 break;
 429
 430         }
 431 }
 432
 433
 434 /*
 435  * Printable view of a message
 436  */
 437 void print_message(void) {
 438         long msgnum = 0L;
 439         const StrBuf *Mime;
 440
 441         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
 442         output_headers(0, 0, 0, 0, 0, 0);
 443
 444         hprintf("Content-type: text/html\r\n"
 445                 "Server: " PACKAGE_STRING "\r\n"
 446                 "Connection: close\r\n");
 447
 448         begin_burst();
 449
 450         read_message(WC->WBuf, HKEY("view_message_print"), msgnum, NULL, &Mime, NULL);
 451
 452         wDumpContent(0);
 453 }
 454
 455 /*
 456  * Display a message's headers
 457  */
 458 void display_headers(void) {
 459         long msgnum = 0L;
 460         char buf[1024];
 461
 462         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
 463         output_headers(0, 0, 0, 0, 0, 0);
 464
 465         hprintf("Content-type: text/plain\r\n"
 466                 "Server: %s\r\n"
 467                 "Connection: close\r\n",
 468                 PACKAGE_STRING);
 469         begin_burst();
 470
 471         serv_printf("MSG2 %ld|1", msgnum);
 472         serv_getln(buf, sizeof buf);
 473         if (buf[0] == '1') {
 474                 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 475                         wc_printf("%s\n", buf);
 476                 }
 477         }
 478
 479         wDumpContent(0);
 480 }
 481
 482
 483
 484 /*
 485  * load message pointers from the server for a "read messages" operation
 486  *
 487  * servcmd:             the citadel command to send to the citserver
 488  */
 489 int load_msg_ptrs(const char *servcmd,
 490                   const char *filter,
 491                   SharedMessageStatus *Stat,
 492                   load_msg_ptrs_detailheaders LH)
 493 {
 494         wcsession *WCC = WC;
 495         message_summary *Msg;
 496         StrBuf *Buf, *Buf2;
 497         long len;
 498         int n;
 499         int skipit;
 500         const char *Ptr = NULL;
 501         int StatMajor;
 502
 503         Stat->lowest_found = LONG_MAX;
 504         Stat->highest_found = LONG_MIN;
 505
 506         if (WCC->summ != NULL) {
 507                 DeleteHash(&WCC->summ);
 508         }
 509         WCC->summ = NewHash(1, Flathash);
 510
 511         Buf = NewStrBuf();
 512         serv_puts(servcmd);
 513         StrBuf_ServGetln(Buf);
 514         StatMajor = GetServerStatus(Buf, NULL);
 515         switch (StatMajor) {
 516         case 1:
 517                 break;
 518         case 8:
 519                 if (filter != NULL) {
 520                         serv_puts(filter);
 521                         serv_puts("000");
 522                         break;
 523                 }
 524                 /* fall back to empty filter in case of we were fooled... */
 525                 serv_puts("");
 526                 serv_puts("000");
 527                 break;
 528         default:
 529                 FreeStrBuf(&Buf);
 530                 return (Stat->nummsgs);
 531         }
 532         Buf2 = NewStrBuf();
 533         while (len = StrBuf_ServGetln(Buf),
 534                ((len >= 0) &&
 535                 ((len != 3) ||
 536                  strcmp(ChrPtr(Buf), "000")!= 0)))
 537         {
 538                 if (Stat->nummsgs < Stat->maxload) {
 539                         skipit = 0;
 540                         Ptr = NULL;
 541                         Msg = (message_summary*)malloc(sizeof(message_summary));
 542                         memset(Msg, 0, sizeof(message_summary));
 543
 544                         Msg->msgnum = StrBufExtractNext_long(Buf, &Ptr, '|');
 545                         Msg->date = StrBufExtractNext_long(Buf, &Ptr, '|');
 546
 547                         if (Stat->nummsgs == 0) {
 548                                 if (Msg->msgnum < Stat->lowest_found) {
 549                                         Stat->lowest_found = Msg->msgnum;
 550                                 }
 551                                 if (Msg->msgnum > Stat->highest_found) {
 552                                         Stat->highest_found = Msg->msgnum;
 553                                 }
 554                         }
 555
 556                         if ((Msg->msgnum == 0) && (StrLength(Buf) < 32)) {
 557                                 free(Msg);
 558                                 continue;
 559                         }
 560
 561                         /*
 562                          * as citserver probably gives us messages in forward date sorting
 563                          * nummsgs should be the same order as the message date.
 564                          */
 565                         if (Msg->date == 0) {
 566                                 Msg->date = Stat->nummsgs;
 567                                 if (StrLength(Buf) < 32)
 568                                         skipit = 1;
 569                         }
 570                         if ((!skipit) && (LH != NULL)) {
 571                                 if (!LH(Buf, &Ptr, Msg, Buf2)){
 572                                         free(Msg);
 573                                         continue;
 574                                 }
 575                         }
 576                         n = Msg->msgnum;
 577                         Put(WCC->summ, (const char *)&n, sizeof(n), Msg, DestroyMessageSummary);
 578                 }
 579                 Stat->nummsgs++;
 580         }
 581         FreeStrBuf(&Buf2);
 582         FreeStrBuf(&Buf);
 583         return (Stat->nummsgs);
 584 }
 585
 586
 587
 588 /**
 589  * \brief sets FlagToSet for each of ScanMe that appears in MatchMSet
 590  * \param ScanMe List of BasicMsgStruct to be searched it MatchSet
 591  * \param MatchMSet MSet we want to flag
 592  * \param FlagToSet Flag to set on each BasicMsgStruct->Flags if in MSet
 593  */
 594 long SetFlagsFromMSet(HashList *ScanMe, MSet *MatchMSet, int FlagToSet, int Reverse)
 595 {
 596         const char *HashKey;
 597         long HKLen;
 598         long count = 0;
 599         HashPos *at;
 600         void *vMsg;
 601         message_summary *Msg;
 602
 603         at = GetNewHashPos(ScanMe, 0);
 604         while (GetNextHashPos(ScanMe, at, &HKLen, &HashKey, &vMsg)) {
 605                 /* Are you a new message, or an old message? */
 606                 Msg = (message_summary*) vMsg;
 607                 if (Reverse && IsInMSetList(MatchMSet, Msg->msgnum)) {
 608                         Msg->Flags = Msg->Flags | FlagToSet;
 609                         count++;
 610                 }
 611                 else if (!Reverse && !IsInMSetList(MatchMSet, Msg->msgnum)) {
 612                         Msg->Flags = Msg->Flags | FlagToSet;
 613                         count++;
 614                 }
 615         }
 616         DeleteHashPos(&at);
 617         return count;
 618 }
 619
 620
 621 long load_seen_flags(void)
 622 {
 623         long count = 0;
 624         StrBuf *OldMsg;
 625         wcsession *WCC = WC;
 626         MSet *MatchMSet;
 627
 628         OldMsg = NewStrBuf();
 629         serv_puts("GTSN");
 630         StrBuf_ServGetln(OldMsg);
 631         if (GetServerStatus(OldMsg, NULL) == 2) {
 632                 StrBufCutLeft(OldMsg, 4);
 633         }
 634         else {
 635                 FreeStrBuf(&OldMsg);
 636                 return 0;
 637         }
 638
 639         if (ParseMSet(&MatchMSet, OldMsg))
 640         {
 641                 count = SetFlagsFromMSet(WCC->summ, MatchMSet, MSGFLAG_READ, 0);
 642         }
 643         DeleteMSet(&MatchMSet);
 644         FreeStrBuf(&OldMsg);
 645         return count;
 646 }
 647
 648 extern readloop_struct rlid[];
 649
 650 typedef struct _RoomRenderer{
 651         int RoomType;
 652
 653         GetParamsGetServerCall_func GetParamsGetServerCall;
 654
 655         PrintViewHeader_func PrintPageHeader;
 656         PrintViewHeader_func PrintViewHeader;
 657         LoadMsgFromServer_func LoadMsgFromServer;
 658         RenderView_or_Tail_func RenderView_or_Tail;
 659         View_Cleanup_func ViewCleanup;
 660         load_msg_ptrs_detailheaders LHParse;
 661 } RoomRenderer;
 662
 663
 664 /*
 665  * command loop for reading messages
 666  *
 667  * Set oper to "readnew" or "readold" or "readfwd" or "headers" or "readgt" or "readlt" or "do_search"
 668  */
 669 void readloop(long oper, eCustomRoomRenderer ForceRenderer)
 670 {
 671         RoomRenderer *ViewMsg;
 672         void *vViewMsg;
 673         void *vMsg;
 674         message_summary *Msg;
 675         char cmd[256] = "";
 676         char filter[256] = "";
 677         int i, r;
 678         wcsession *WCC = WC;
 679         HashPos *at;
 680         const char *HashKey;
 681         long HKLen;
 682         WCTemplputParams SubTP;
 683         SharedMessageStatus Stat;
 684         void *ViewSpecific = NULL;
 685
 686         if (havebstr("is_summary") && (1 == (ibstr("is_summary")))) {
 687                 WCC->CurRoom.view = VIEW_MAILBOX;
 688         }
 689
 690         if (havebstr("view")) {
 691                 WCC->CurRoom.view = ibstr("view");
 692         }
 693
 694         memset(&Stat, 0, sizeof(SharedMessageStatus));
 695         Stat.maxload = 10000;
 696         Stat.lowest_found = (-1);
 697         Stat.highest_found = (-1);
 698         if (ForceRenderer == eUseDefault)
 699                 GetHash(ReadLoopHandler, IKEY(WCC->CurRoom.view), &vViewMsg);
 700         else
 701                 GetHash(ReadLoopHandler, IKEY(ForceRenderer), &vViewMsg);
 702         if (vViewMsg == NULL) {
 703                 WCC->CurRoom.view = VIEW_BBS;
 704                 GetHash(ReadLoopHandler, IKEY(WCC->CurRoom.view), &vViewMsg);
 705         }
 706         if (vViewMsg == NULL) {
 707                 return;                 /* TODO: print message */
 708         }
 709
 710         ViewMsg = (RoomRenderer*) vViewMsg;
 711         if (ViewMsg->PrintPageHeader == NULL)
 712                 output_headers(1, 1, 1, 0, 0, 0);
 713         else
 714                 ViewMsg->PrintPageHeader(&Stat, ViewSpecific);
 715
 716         if (ViewMsg->GetParamsGetServerCall != NULL) {
 717                 r = ViewMsg->GetParamsGetServerCall(
 718                        &Stat,
 719                        &ViewSpecific,
 720                        oper,
 721                        cmd, sizeof(cmd),
 722                        filter, sizeof(filter)
 723                 );
 724         } else {
 725                 r = 0;
 726         }
 727
 728         switch(r)
 729         {
 730         case 400:
 731         case 404:
 732
 733                 return;
 734         case 300: /* the callback hook should do the work for us here, since he knows what to do. */
 735                 return;
 736         case 200:
 737         default:
 738                 break;
 739         }
 740         if (!IsEmptyStr(cmd)) {
 741                 const char *p = NULL;
 742                 if (!IsEmptyStr(filter))
 743                         p = filter;
 744                 Stat.nummsgs = load_msg_ptrs(cmd, p, &Stat, ViewMsg->LHParse);
 745         }
 746
 747         if (Stat.sortit) {
 748                 CompareFunc SortIt;
 749                 StackContext(NULL, &SubTP, NULL, CTX_MAILSUM, 0, NULL);
 750                 {
 751                         SortIt =  RetrieveSort(&SubTP,
 752                                                NULL, 0,
 753                                                HKEY("date"),
 754                                                Stat.defaultsortorder);
 755                 }
 756                 UnStackContext(&SubTP);
 757                 if (SortIt != NULL)
 758                         SortByPayload(WCC->summ, SortIt);
 759         }
 760         if (Stat.startmsg < 0) {
 761                 Stat.startmsg =  0;
 762         }
 763
 764         if (Stat.load_seen) Stat.numNewmsgs = load_seen_flags();
 765
 766         /*
 767          * Print any inforation above the message list...
 768          */
 769         if (ViewMsg->PrintViewHeader != NULL)
 770                 ViewMsg->PrintViewHeader(&Stat, &ViewSpecific);
 771
 772         WCC->startmsg =  Stat.startmsg;
 773         WCC->maxmsgs = Stat.maxmsgs;
 774         WCC->num_displayed = 0;
 775
 776         /* Put some helpful data in vars for mailsummary_json */
 777         {
 778                 StrBuf *Foo;
 779
 780                 Foo = NewStrBuf ();
 781                 StrBufPrintf(Foo, "%ld", Stat.nummsgs);
 782                 PutBstr(HKEY("__READLOOP:TOTALMSGS"), NewStrBufDup(Foo)); /* keep Foo! */
 783
 784                 StrBufPrintf(Foo, "%ld", Stat.numNewmsgs);
 785                 PutBstr(HKEY("__READLOOP:NEWMSGS"), NewStrBufDup(Foo)); /* keep Foo! */
 786
 787                 StrBufPrintf(Foo, "%ld", Stat.startmsg);
 788                 PutBstr(HKEY("__READLOOP:STARTMSG"), Foo); /* store Foo elsewhere, descope it here. */
 789         }
 790
 791         /*
 792          * iterate over each message. if we need to load an attachment, do it here.
 793          */
 794
 795         if ((ViewMsg->LoadMsgFromServer != NULL) &&
 796             (!IsEmptyStr(cmd)))
 797         {
 798                 at = GetNewHashPos(WCC->summ, 0);
 799                 Stat.num_displayed = i = 0;
 800                 while ( GetNextHashPos(WCC->summ, at, &HKLen, &HashKey, &vMsg)) {
 801                         Msg = (message_summary*) vMsg;
 802                         if ((Msg->msgnum >= Stat.startmsg) && (Stat.num_displayed <= Stat.maxmsgs)) {
 803                                 ViewMsg->LoadMsgFromServer(&Stat,
 804                                                            &ViewSpecific,
 805                                                            Msg,
 806                                                            (Msg->Flags & MSGFLAG_READ) != 0,
 807                                                            i);
 808                         }
 809                         i++;
 810                 }
 811                 DeleteHashPos(&at);
 812         }
 813
 814         /*
 815          * Done iterating the message list. now tasks we want to do after.
 816          */
 817         if (ViewMsg->RenderView_or_Tail != NULL)
 818                 ViewMsg->RenderView_or_Tail(&Stat, &ViewSpecific, oper);
 819
 820         if (ViewMsg->ViewCleanup != NULL)
 821                 ViewMsg->ViewCleanup(&ViewSpecific);
 822
 823         WCC->startmsg = 0;
 824         WCC->maxmsgs = 0;
 825         if (WCC->summ != NULL) {
 826                 DeleteHash(&WCC->summ);
 827         }
 828 }
 829
 830
 831 /*
 832  * Back end for post_message()
 833  * ... this is where the actual message gets transmitted to the server.
 834  */
 835 void post_mime_to_server(void) {
 836         wcsession *WCC = WC;
 837         char top_boundary[SIZ];
 838         char alt_boundary[SIZ];
 839         int is_multipart = 0;
 840         static int seq = 0;
 841         wc_mime_attachment *att;
 842         char *encoded;
 843         size_t encoded_length;
 844         size_t encoded_strlen;
 845         char *txtmail = NULL;
 846         int include_text_alt = 0;       /* Set to nonzero to include multipart/alternative text/plain */
 847
 848         sprintf(top_boundary, "Citadel--Multipart--%s--%04x--%04x",
 849                 ChrPtr(WCC->serv_info->serv_fqdn),
 850                 getpid(),
 851                 ++seq
 852         );
 853         sprintf(alt_boundary, "Citadel--Multipart--%s--%04x--%04x",
 854                 ChrPtr(WCC->serv_info->serv_fqdn),
 855                 getpid(),
 856                 ++seq
 857         );
 858
 859         /* RFC2045 requires this, and some clients look for it... */
 860         serv_puts("MIME-Version: 1.0");
 861         serv_puts("X-Mailer: " PACKAGE_STRING);
 862
 863         /* If there are attachments, we have to do multipart/mixed */
 864         if (GetCount(WCC->attachments) > 0) {
 865                 is_multipart = 1;
 866         }
 867
 868         /* Only do multipart/alternative for mailboxes.  BBS and Wiki rooms don't need it. */
 869         if ((WCC->CurRoom.view == VIEW_MAILBOX) ||
 870             (WCC->CurRoom.view == VIEW_JSON_LIST))
 871         {
 872                 include_text_alt = 1;
 873         }
 874
 875         if (is_multipart) {
 876                 /* Remember, serv_printf() appends an extra newline */
 877                 serv_printf("Content-type: multipart/mixed; boundary=\"%s\"\n", top_boundary);
 878                 serv_printf("This is a multipart message in MIME format.\n");
 879                 serv_printf("--%s", top_boundary);
 880         }
 881
 882         /* Remember, serv_printf() appends an extra newline */
 883         if (include_text_alt) {
 884                 StrBuf *Buf;
 885                 serv_printf("Content-type: multipart/alternative; "
 886                         "boundary=\"%s\"\n", alt_boundary);
 887                 serv_printf("This is a multipart message in MIME format.\n");
 888                 serv_printf("--%s", alt_boundary);
 889
 890                 serv_puts("Content-type: text/plain; charset=utf-8");
 891                 serv_puts("Content-Transfer-Encoding: quoted-printable");
 892                 serv_puts("");
 893                 txtmail = html_to_ascii(bstr("msgtext"), 0, 80, 0);
 894                 Buf = NewStrBufPlain(txtmail, -1);
 895                 free(txtmail);
 896
 897                 text_to_server_qp(Buf);     /* Transmit message in quoted-printable encoding */
 898                 FreeStrBuf(&Buf);
 899                 serv_printf("\n--%s", alt_boundary);
 900         }
 901
 902         if (havebstr("markdown"))
 903         {
 904                 serv_puts("Content-type: text/x-markdown; charset=utf-8");
 905                 serv_puts("Content-Transfer-Encoding: quoted-printable");
 906                 serv_puts("");
 907                 text_to_server_qp(sbstr("msgtext"));    /* Transmit message in quoted-printable encoding */
 908         }
 909         else
 910         {
 911                 serv_puts("Content-type: text/html; charset=utf-8");
 912                 serv_puts("Content-Transfer-Encoding: quoted-printable");
 913                 serv_puts("");
 914                 serv_puts("<html><body>\r\n");
 915                 text_to_server_qp(sbstr("msgtext"));    /* Transmit message in quoted-printable encoding */
 916                 serv_puts("</body></html>\r\n");
 917         }
 918
 919         if (include_text_alt) {
 920                 serv_printf("--%s--", alt_boundary);
 921         }
 922
 923         if (is_multipart) {
 924                 long len;
 925                 const char *Key;
 926                 void *vAtt;
 927                 HashPos  *it;
 928
 929                 /* Add in the attachments */
 930                 it = GetNewHashPos(WCC->attachments, 0);
 931                 while (GetNextHashPos(WCC->attachments, it, &len, &Key, &vAtt)) {
 932                         att = (wc_mime_attachment *)vAtt;
 933                         if (att->length == 0)
 934                                 continue;
 935                         encoded_length = ((att->length * 150) / 100);
 936                         encoded = malloc(encoded_length);
 937                         if (encoded == NULL) break;
 938                         encoded_strlen = CtdlEncodeBase64(encoded, ChrPtr(att->Data), StrLength(att->Data), 1);
 939
 940                         serv_printf("--%s", top_boundary);
 941                         serv_printf("Content-type: %s", ChrPtr(att->ContentType));
 942                         serv_printf("Content-disposition: attachment; filename=\"%s\"", ChrPtr(att->FileName));
 943                         serv_puts("Content-transfer-encoding: base64");
 944                         serv_puts("");
 945                         serv_write(encoded, encoded_strlen);
 946                         serv_puts("");
 947                         serv_puts("");
 948                         free(encoded);
 949                 }
 950                 serv_printf("--%s--", top_boundary);
 951                 DeleteHashPos(&it);
 952         }
 953
 954         serv_puts("000");
 955 }
 956
 957
 958 /*
 959  * Post message (or don't post message)
 960  *
 961  * Note regarding the "dont_post" variable:
 962  * A random value (actually, it's just a timestamp) is inserted as a hidden
 963  * field called "postseq" when the display_enter page is generated.  This
 964  * value is checked when posting, using the static variable dont_post.  If a
 965  * user attempts to post twice using the same dont_post value, the message is
 966  * discarded.  This prevents the accidental double-saving of the same message
 967  * if the user happens to click the browser "back" button.
 968  */
 969 void post_message(void)
 970 {
 971         StrBuf *UserName;
 972         StrBuf *EmailAddress;
 973         StrBuf *EncBuf;
 974         char buf[1024];
 975         StrBuf *encoded_subject = NULL;
 976         static long dont_post = (-1L);
 977         int is_anonymous = 0;
 978         const StrBuf *display_name = NULL;
 979         wcsession *WCC = WC;
 980         StrBuf *Buf;
 981
 982         if (havebstr("force_room")) {
 983                 gotoroom(sbstr("force_room"));
 984         }
 985
 986         if (havebstr("display_name")) {
 987                 display_name = sbstr("display_name");
 988                 if (!strcmp(ChrPtr(display_name), "__ANONYMOUS__")) {
 989                         display_name = NULL;
 990                         is_anonymous = 1;
 991                 }
 992         }
 993
 994         if (!strcasecmp(bstr("submit_action"), "cancel")) {
 995                 AppendImportantMessage(_("Cancelled.  Message was not posted."), -1);
 996         } else if (lbstr("postseq") == dont_post) {
 997                 AppendImportantMessage(
 998                         _("Automatically cancelled because you have already "
 999                           "saved this message."), -1);
1000         } else {
1001                 const char CMD[] = "ENT0 1|%s|%d|4|%s|%s||%s|%s|%s|%s|%s";
1002                 StrBuf *Recp = NULL;
1003                 StrBuf *Cc = NULL;
1004                 StrBuf *Bcc = NULL;
1005                 char *wikipage = NULL;
1006                 const StrBuf *my_email_addr = NULL;
1007                 StrBuf *CmdBuf = NULL;
1008                 StrBuf *references = NULL;
1009                 int saving_to_drafts = 0;
1010                 long HeaderLen = 0;
1011
1012                 saving_to_drafts = !strcasecmp(bstr("submit_action"), "draft");
1013                 Buf = NewStrBuf();
1014
1015                 if (saving_to_drafts) {
1016                         /* temporarily change to the drafts room */
1017                         serv_puts("GOTO _DRAFTS_");
1018                         StrBuf_ServGetln(Buf);
1019                         if (GetServerStatusMsg(Buf, NULL, 1, 2) != 2) {
1020                                 /* You probably don't even have a dumb Drafts folder */
1021                                 syslog(LOG_DEBUG, "%s:%d: server save to drafts error: %s\n", __FILE__, __LINE__, ChrPtr(Buf) + 4);
1022                                 AppendImportantMessage(_("Saved to Drafts failed: "), -1);
1023                                 display_enter();
1024                                 FreeStrBuf(&Buf);
1025                                 return;
1026                         }
1027                 }
1028
1029                 if (havebstr("references"))
1030                 {
1031                         const StrBuf *ref = sbstr("references");
1032                         references = NewStrBufDup(ref);
1033                         if (*ChrPtr(references) == '|') {       /* remove leading '|' if present */
1034                                 StrBufCutLeft(references, 1);
1035                         }
1036                         StrBufReplaceChars(references, '|', '!');
1037                 }
1038                 if (havebstr("subject")) {
1039                         const StrBuf *Subj;
1040                         /*
1041                          * make enough room for the encoded string;
1042                          * plus the QP header
1043                          */
1044                         Subj = sbstr("subject");
1045
1046                         StrBufRFC2047encode(&encoded_subject, Subj);
1047                 }
1048                 UserName = NewStrBuf();
1049                 EmailAddress = NewStrBuf();
1050                 EncBuf = NewStrBuf();
1051
1052                 Recp = StrBufSanitizeEmailRecipientVector(sbstr("recp"), UserName, EmailAddress, EncBuf);
1053                 Cc = StrBufSanitizeEmailRecipientVector(sbstr("cc"), UserName, EmailAddress, EncBuf);
1054                 Bcc = StrBufSanitizeEmailRecipientVector(sbstr("bcc"), UserName, EmailAddress, EncBuf);
1055
1056                 FreeStrBuf(&UserName);
1057                 FreeStrBuf(&EmailAddress);
1058                 FreeStrBuf(&EncBuf);
1059
1060                 wikipage = strdup(bstr("page"));
1061                 str_wiki_index(wikipage);
1062                 my_email_addr = sbstr("my_email_addr");
1063
1064                 HeaderLen = StrLength(Recp) +
1065                         StrLength(encoded_subject) +
1066                         StrLength(Cc) +
1067                         StrLength(Bcc) +
1068                         strlen(wikipage) +
1069                         StrLength(my_email_addr) +
1070                         StrLength(references);
1071                 CmdBuf = NewStrBufPlain(NULL, sizeof (CMD) + HeaderLen);
1072                 StrBufPrintf(CmdBuf,
1073                              CMD,
1074                              saving_to_drafts?"":ChrPtr(Recp),
1075                              is_anonymous,
1076                              ChrPtr(encoded_subject),
1077                              ChrPtr(display_name),
1078                              saving_to_drafts?"":ChrPtr(Cc),
1079                              saving_to_drafts?"":ChrPtr(Bcc),
1080                              wikipage,
1081                              ChrPtr(my_email_addr),
1082                              ChrPtr(references));
1083                 FreeStrBuf(&references);
1084                 FreeStrBuf(&encoded_subject);
1085                 free(wikipage);
1086
1087                 if ((HeaderLen + StrLength(sbstr("msgtext")) < 10) &&
1088                     (GetCount(WCC->attachments) == 0)){
1089                         AppendImportantMessage(_("Refusing to post empty message.\n"), -1);
1090                         FreeStrBuf(&CmdBuf);
1091
1092                 }
1093                 else
1094                 {
1095                         syslog(LOG_DEBUG, "%s\n", ChrPtr(CmdBuf));
1096                         serv_puts(ChrPtr(CmdBuf));
1097                         FreeStrBuf(&CmdBuf);
1098
1099                         StrBuf_ServGetln(Buf);
1100                         if (GetServerStatus(Buf, NULL) == 4) {
1101                                 if (saving_to_drafts) {
1102                                         if (  (havebstr("recp"))
1103                                               || (havebstr("cc"  ))
1104                                               || (havebstr("bcc" )) ) {
1105                                                 /* save recipient headers or room to post to */
1106                                                 serv_printf("To: %s", ChrPtr(Recp));
1107                                                 serv_printf("Cc: %s", ChrPtr(Cc));
1108                                                 serv_printf("Bcc: %s", ChrPtr(Bcc));
1109                                         } else {
1110                                                 serv_printf("X-Citadel-Room: %s", ChrPtr(WCC->CurRoom.name));
1111                                         }
1112                                 }
1113                                 post_mime_to_server();
1114                                 if (saving_to_drafts) {
1115                                         AppendImportantMessage(_("Message has been saved to Drafts.\n"), -1);
1116                                         gotoroom(WCC->CurRoom.name);
1117                                         fixview();
1118                                         readloop(readnew, eUseDefault);
1119                                         FreeStrBuf(&Buf);
1120                                         return;
1121                                 } else if (  (havebstr("recp"))
1122                                              || (havebstr("cc"  ))
1123                                              || (havebstr("bcc" ))
1124                                         ) {
1125                                         AppendImportantMessage(_("Message has been sent.\n"), -1);
1126                                 }
1127                                 else {
1128                                         AppendImportantMessage(_("Message has been posted.\n"), -1);
1129                                 }
1130                                 dont_post = lbstr("postseq");
1131                         } else {
1132                                 syslog(LOG_DEBUG, "%s:%d: server post error: %s", __FILE__, __LINE__, ChrPtr(Buf) + 4);
1133                                 AppendImportantMessage(ChrPtr(Buf) + 4, StrLength(Buf) - 4);
1134                                 display_enter();
1135                                 if (saving_to_drafts) gotoroom(WCC->CurRoom.name);
1136                                 FreeStrBuf(&Recp);
1137                                 FreeStrBuf(&Buf);
1138                                 FreeStrBuf(&Cc);
1139                                 FreeStrBuf(&Bcc);
1140                                 return;
1141                         }
1142                 }
1143                 FreeStrBuf(&Recp);
1144                 FreeStrBuf(&Buf);
1145                 FreeStrBuf(&Cc);
1146                 FreeStrBuf(&Bcc);
1147         }
1148
1149         DeleteHash(&WCC->attachments);
1150
1151         /*
1152          *  We may have been supplied with instructions regarding the location
1153          *  to which we must return after posting.  If found, go there.
1154          */
1155         if (havebstr("return_to")) {
1156                 http_redirect(bstr("return_to"));
1157         }
1158         /*
1159          *  If we were editing a page in a wiki room, go to that page now.
1160          */
1161         else if (havebstr("page")) {
1162                 snprintf(buf, sizeof buf, "wiki?page=%s", bstr("page"));
1163                 http_redirect(buf);
1164         }
1165         /*
1166          *  Otherwise, just go to the "read messages" loop.
1167          */
1168         else {
1169                 fixview();
1170                 readloop(readnew, eUseDefault);
1171         }
1172 }
1173
1174
1175 /*
1176  * Client is uploading an attachment
1177  */
1178 void upload_attachment(void) {
1179         wcsession *WCC = WC;
1180         const char *pch;
1181         int n;
1182         const char *newn;
1183         long newnlen;
1184         void *v;
1185         wc_mime_attachment *att;
1186         const StrBuf *Tmpl = sbstr("template");
1187         const StrBuf *MimeType = NULL;
1188         const StrBuf *UID;
1189
1190         begin_burst();
1191         syslog(LOG_DEBUG, "upload_attachment()\n");
1192         if (!Tmpl) wc_printf("upload_attachment()<br>\n");
1193
1194         if (WCC->upload_length <= 0) {
1195                 syslog(LOG_DEBUG, "ERROR no attachment was uploaded\n");
1196                 if (Tmpl)
1197                 {
1198                         putlbstr("UPLOAD_ERROR", 1);
1199                         MimeType = DoTemplate(SKEY(Tmpl), NULL, &NoCtx);
1200                 }
1201                 else      wc_printf("ERROR no attachment was uploaded<br>\n");
1202                 http_transmit_thing(ChrPtr(MimeType), 0);
1203
1204                 return;
1205         }
1206
1207         syslog(LOG_DEBUG, "Client is uploading %d bytes\n", WCC->upload_length);
1208         if (Tmpl) putlbstr("UPLOAD_LENGTH", WCC->upload_length);
1209         else wc_printf("Client is uploading %d bytes<br>\n", WCC->upload_length);
1210
1211         att = (wc_mime_attachment*)malloc(sizeof(wc_mime_attachment));
1212         memset(att, 0, sizeof(wc_mime_attachment ));
1213         att->length = WCC->upload_length;
1214         att->ContentType = NewStrBufPlain(WCC->upload_content_type, -1);
1215         att->FileName = NewStrBufDup(WCC->upload_filename);
1216         UID = sbstr("qquuid");
1217         if (UID)
1218                 att->PartNum = NewStrBufDup(UID);
1219
1220         if (WCC->attachments == NULL) {
1221                 WCC->attachments = NewHash(1, Flathash);
1222         }
1223
1224         /* And add it to the list. */
1225         n = 0;
1226         if ((GetCount(WCC->attachments) > 0) &&
1227             GetHashAt(WCC->attachments,
1228                       GetCount(WCC->attachments) -1,
1229                       &newnlen, &newn, &v))
1230             n = *((int*) newn) + 1;
1231         Put(WCC->attachments, IKEY(n), att, DestroyMime);
1232
1233         /*
1234          * Mozilla sends a simple filename, which is what we want,
1235          * but Satan's Browser sends an entire pathname.  Reduce
1236          * the path to just a filename if we need to.
1237          */
1238         pch = strrchr(ChrPtr(att->FileName), '/');
1239         if (pch != NULL) {
1240                 StrBufCutLeft(att->FileName, pch - ChrPtr(att->FileName) + 1);
1241         }
1242         pch = strrchr(ChrPtr(att->FileName), '\\');
1243         if (pch != NULL) {
1244                 StrBufCutLeft(att->FileName, pch - ChrPtr(att->FileName) + 1);
1245         }
1246
1247         /*
1248          * Transfer control of this memory from the upload struct
1249          * to the attachment struct.
1250          */
1251         att->Data = WCC->upload;
1252         WCC->upload = NULL;
1253         WCC->upload_length = 0;
1254
1255         if (Tmpl) MimeType = DoTemplate(SKEY(Tmpl), NULL, &NoCtx);
1256         http_transmit_thing(ChrPtr(MimeType), 0);
1257 }
1258
1259
1260 /*
1261  * Remove an attachment from the message currently being composed.
1262  *
1263  * Currently we identify the attachment to be removed by its filename.
1264  * There is probably a better way to do this.
1265  */
1266 void remove_attachment(void) {
1267         wcsession *WCC = WC;
1268         wc_mime_attachment *att;
1269         void *vAtt;
1270         StrBuf *WhichAttachment;
1271         HashPos *at;
1272         long len;
1273         int found=0;
1274         const char *key;
1275
1276         WhichAttachment = NewStrBufDup(sbstr("which_attachment"));
1277         if (ChrPtr(WhichAttachment)[0] == '/')
1278                 StrBufCutLeft(WhichAttachment, 1);
1279         StrBufUnescape(WhichAttachment, 0);
1280         at = GetNewHashPos(WCC->attachments, 0);
1281         do {
1282                 vAtt = NULL;
1283                 GetHashPos(WCC->attachments, at, &len, &key, &vAtt);
1284
1285                 att = (wc_mime_attachment*) vAtt;
1286                 if ((att != NULL) &&
1287                     (
1288                             !strcmp(ChrPtr(WhichAttachment), ChrPtr(att->FileName)) ||
1289                     ((att->PartNum != NULL) &&
1290                      !strcmp(ChrPtr(WhichAttachment), ChrPtr(att->PartNum)))
1291                             ))
1292                 {
1293                         DeleteEntryFromHash(WCC->attachments, at);
1294                         found=1;
1295                         break;
1296                 }
1297         }
1298         while (NextHashPos(WCC->attachments, at));
1299
1300         FreeStrBuf(&WhichAttachment);
1301         wc_printf("remove_attachment(%d) completed\n", found);
1302 }
1303
1304
1305 const char *ReplyToModeStrings [3] = {
1306         "reply",
1307         "replyall",
1308         "forward"
1309 };
1310 typedef enum _eReplyToNodes {
1311         eReply,
1312         eReplyAll,
1313         eForward
1314 }eReplyToNodes;
1315
1316 /*
1317  * display the message entry screen
1318  */
1319 void display_enter(void)
1320 {
1321         const char *ReplyingModeStr;
1322         eReplyToNodes ReplyMode = eReply;
1323         StrBuf *Line;
1324         long Result;
1325         int rc;
1326         const StrBuf *display_name = NULL;
1327         int recipient_required = 0;
1328         int subject_required = 0;
1329         int is_anonymous = 0;
1330         wcsession *WCC = WC;
1331         int i = 0;
1332         long replying_to;
1333
1334         int prefer_md;
1335
1336         get_pref_yesno("markdown", &prefer_md, 0);
1337
1338         if (havebstr("force_room")) {
1339                 gotoroom(sbstr("force_room"));
1340         }
1341
1342         display_name = sbstr("display_name");
1343         if (!strcmp(ChrPtr(display_name), "__ANONYMOUS__")) {
1344                 display_name = NULL;
1345                 is_anonymous = 1;
1346         }
1347
1348         /*
1349          * First, do we have permission to enter messages in this room at all?
1350          */
1351         Line = NewStrBuf();
1352         serv_puts("ENT0 0");
1353         StrBuf_ServGetln(Line);
1354         rc = GetServerStatusMsg(Line, &Result, 0, 2);
1355
1356         if (Result == 570) {            /* 570 means that we need a recipient here */
1357                 recipient_required = 1;
1358         }
1359         else if (rc != 2) {             /* Any other error means that we cannot continue */
1360                 rc = GetServerStatusMsg(Line, &Result, 0, 2);
1361                 fixview();
1362                 readloop(readnew, eUseDefault);
1363                 FreeStrBuf(&Line);
1364                 return;
1365         }
1366
1367         /* Is the server strongly recommending that the user enter a message subject? */
1368         if (StrLength(Line) > 4) {
1369                 subject_required = extract_int(ChrPtr(Line) + 4, 1);
1370         }
1371
1372         /*
1373          * Are we perhaps in an address book view?  If so, then an "enter
1374          * message" command really means "add new entry."
1375          */
1376         if (WCC->CurRoom.defview == VIEW_ADDRESSBOOK) {
1377                 do_edit_vcard(-1, "", NULL, NULL, "",  ChrPtr(WCC->CurRoom.name));
1378                 FreeStrBuf(&Line);
1379                 return;
1380         }
1381
1382         /*
1383          * Are we perhaps in a calendar room?  If so, then an "enter
1384          * message" command really means "add new calendar item."
1385          */
1386         if (WCC->CurRoom.defview == VIEW_CALENDAR) {
1387                 display_edit_event();
1388                 FreeStrBuf(&Line);
1389                 return;
1390         }
1391
1392         /*
1393          * Are we perhaps in a tasks view?  If so, then an "enter
1394          * message" command really means "add new task."
1395          */
1396         if (WCC->CurRoom.defview == VIEW_TASKS) {
1397                 display_edit_task();
1398                 FreeStrBuf(&Line);
1399                 return;
1400         }
1401
1402
1403         ReplyingModeStr = bstr("replying_mode");
1404         if (ReplyingModeStr != NULL) for (i = 0; i < 3; i++) {
1405                         if (strcmp(ReplyingModeStr, ReplyToModeStrings[i]) == 0) {
1406                                 ReplyMode = (eReplyToNodes) i;
1407                                 break;
1408                         }
1409                 }
1410
1411
1412         /*
1413          * If the "replying_to" variable is set, it refers to a message
1414          * number from which we must extract some header fields...
1415          */
1416         replying_to = lbstr("replying_to");
1417         if (replying_to > 0) {
1418                 long len;
1419                 StrBuf *wefw = NULL;
1420                 StrBuf *msgn = NULL;
1421                 StrBuf *from = NULL;
1422                 StrBuf *node = NULL;
1423                 StrBuf *rfca = NULL;
1424                 StrBuf *rcpt = NULL;
1425                 StrBuf *cccc = NULL;
1426                 StrBuf *replyto = NULL;
1427                 StrBuf *nvto = NULL;
1428                 serv_printf("MSG0 %ld|1", replying_to);
1429
1430                 StrBuf_ServGetln(Line);
1431                 if (GetServerStatusMsg(Line, NULL, 0, 0) == 1)
1432                         while (len = StrBuf_ServGetln(Line),
1433                                (len >= 0) &&
1434                                ((len != 3)  ||
1435                                 strcmp(ChrPtr(Line), "000")))
1436                         {
1437                                 eMessageField which;
1438                                 if ((StrLength(Line) > 4) &&
1439                                     (ChrPtr(Line)[4] == '=') &&
1440                                     GetFieldFromMnemonic(&which, ChrPtr(Line)))
1441                                         switch (which) {
1442                                         case eMsgSubject: {
1443                                                 StrBuf *subj = NewStrBuf();
1444                                                 StrBuf *FlatSubject;
1445
1446                                                 if (ReplyMode == eForward) {
1447                                                         if (strncasecmp(ChrPtr(Line) + 5, "Fw:", 3)) {
1448                                                                 StrBufAppendBufPlain(subj, HKEY("Fw: "), 0);
1449                                                         }
1450                                                 }
1451                                                 else {
1452                                                         if (strncasecmp(ChrPtr(Line) + 5, "Re:", 3)) {
1453                                                                 StrBufAppendBufPlain(subj, HKEY("Re: "), 0);
1454                                                         }
1455                                                 }
1456                                                 StrBufAppendBufPlain(subj,
1457                                                                      ChrPtr(Line) + 5,
1458                                                                      StrLength(Line) - 5, 0);
1459                                                 FlatSubject = NewStrBufPlain(NULL, StrLength(subj));
1460                                                 StrBuf_RFC822_to_Utf8(FlatSubject, subj, NULL, NULL);
1461
1462                                                 PutBstr(HKEY("subject"), FlatSubject);
1463                                         }
1464                                                 break;
1465
1466                                         case eWeferences:
1467                                         {
1468                                                 int rrtok;
1469                                                 int rrlen;
1470
1471                                                 wefw = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1472
1473                                                 /* Trim down excessively long lists of thread references.  We eliminate the
1474                                                  * second one in the list so that the thread root remains intact.
1475                                                  */
1476                                                 rrtok = num_tokens(ChrPtr(wefw), '|');
1477                                                 rrlen = StrLength(wefw);
1478                                                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1479                                                         StrBufRemove_token(wefw, 1, '|');
1480                                                 }
1481                                                 break;
1482                                         }
1483
1484                                         case emessageId:
1485                                                 msgn = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1486                                                 break;
1487
1488                                         case eAuthor: {
1489                                                 StrBuf *FlatFrom;
1490                                                 from = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1491                                                 FlatFrom = NewStrBufPlain(NULL, StrLength(from));
1492                                                 StrBuf_RFC822_to_Utf8(FlatFrom, from, NULL, NULL);
1493                                                 FreeStrBuf(&from);
1494                                                 from = FlatFrom;
1495                                                 for (i=0; i<StrLength(from); ++i) {
1496                                                         if (ChrPtr(from)[i] == ',')
1497                                                                 StrBufPeek(from, NULL, i, ' ');
1498                                                 }
1499                                                 break;
1500                                         }
1501
1502                                         case eRecipient:
1503                                                 rcpt = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1504                                                 break;
1505
1506
1507                                         case eCarbonCopY:
1508                                                 cccc = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1509                                                 break;
1510
1511
1512                                         case eNodeName:
1513                                                 node = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1514                                                 break;
1515                                         case eReplyTo:
1516                                                 replyto = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1517                                                 break;
1518                                         case erFc822Addr: {
1519                                                 StrBuf *FlatRFCA;
1520                                                 rfca = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1521                                                 FlatRFCA = NewStrBufPlain(NULL, StrLength(rfca));
1522                                                 StrBuf_RFC822_to_Utf8(FlatRFCA, rfca, NULL, NULL);
1523                                                 FreeStrBuf(&rfca);
1524                                                 rfca = FlatRFCA;
1525                                                 break;
1526                                         }
1527                                         case eenVelopeTo:
1528                                                 nvto = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1529                                                 putbstr("nvto", nvto);
1530                                                 break;
1531                                         case eXclusivID:
1532                                         case eHumanNode:
1533                                         case eJournal:
1534                                         case eListID:
1535                                         case eMesageText:
1536                                         case eOriginalRoom:
1537                                         case eMessagePath:
1538                                         case eSpecialField:
1539                                         case eTimestamp:
1540                                                 break;
1541
1542                                         }
1543                         }
1544
1545
1546                 if (StrLength(wefw) + StrLength(msgn) > 0) {
1547                         StrBuf *refs = NewStrBuf();
1548                         if (StrLength(wefw) > 0) {
1549                                 StrBufAppendBuf(refs, wefw, 0);
1550                         }
1551                         if ( (StrLength(wefw) > 0) &&
1552                              (StrLength(msgn) > 0) )
1553                         {
1554                                 StrBufAppendBufPlain(refs, HKEY("|"), 0);
1555                         }
1556                         if (StrLength(msgn) > 0) {
1557                                 StrBufAppendBuf(refs, msgn, 0);
1558                         }
1559                         PutBstr(HKEY("references"), refs);
1560                 }
1561
1562                 /*
1563                  * If this is a Reply or a ReplyAll, copy the sender's email into the To: field
1564                  */
1565                 if ((ReplyMode == eReply) || (ReplyMode == eReplyAll))
1566                 {
1567                         StrBuf *to_rcpt;
1568                         if ((StrLength(replyto) > 0) && (ReplyMode == eReplyAll)) {
1569                                 to_rcpt = NewStrBuf();
1570                                 StrBufAppendBuf(to_rcpt, replyto, 0);
1571                         }
1572                         else if (StrLength(rfca) > 0) {
1573                                 to_rcpt = NewStrBuf();
1574                                 StrBufAppendBuf(to_rcpt, from, 0);
1575                                 StrBufAppendBufPlain(to_rcpt, HKEY(" <"), 0);
1576                                 StrBufAppendBuf(to_rcpt, rfca, 0);
1577                                 StrBufAppendBufPlain(to_rcpt, HKEY(">"), 0);
1578                         }
1579                         else {
1580                                 to_rcpt =  from;
1581                                 from = NULL;
1582                                 if (    (StrLength(node) > 0)
1583                                         && (strcasecmp(ChrPtr(node), ChrPtr(WCC->serv_info->serv_nodename)))
1584                                 ) {
1585                                         StrBufAppendBufPlain(to_rcpt, HKEY(" @ "), 0);
1586                                         StrBufAppendBuf(to_rcpt, node, 0);
1587                                 }
1588                         }
1589                         PutBstr(HKEY("recp"), to_rcpt);
1590                 }
1591
1592                 /*
1593                  * Only if this is a ReplyAll, copy all recipients into the Cc: field
1594                  */
1595                 if (ReplyMode == eReplyAll)
1596                 {
1597                         StrBuf *cc_rcpt = rcpt;
1598                         rcpt = NULL;
1599                         if ((StrLength(cccc) > 0) && (StrLength(replyto) == 0))
1600                         {
1601                                 if (cc_rcpt != NULL)  {
1602                                         StrBufAppendPrintf(cc_rcpt, ", ");
1603                                         StrBufAppendBuf(cc_rcpt, cccc, 0);
1604                                 } else {
1605                                         cc_rcpt = cccc;
1606                                         cccc = NULL;
1607                                 }
1608                         }
1609                         if (cc_rcpt != NULL)
1610                                 PutBstr(HKEY("cc"), cc_rcpt);
1611                 }
1612                 FreeStrBuf(&wefw);
1613                 FreeStrBuf(&msgn);
1614                 FreeStrBuf(&from);
1615                 FreeStrBuf(&node);
1616                 FreeStrBuf(&rfca);
1617                 FreeStrBuf(&rcpt);
1618                 FreeStrBuf(&cccc);
1619         }
1620         FreeStrBuf(&Line);
1621         /*
1622          * Otherwise proceed normally.
1623          * Do a custom room banner with no navbar...
1624          */
1625
1626         if (recipient_required) {
1627                 const StrBuf *Recp = NULL;
1628                 const StrBuf *Cc = NULL;
1629                 const StrBuf *Bcc = NULL;
1630                 char *wikipage = NULL;
1631                 StrBuf *CmdBuf = NULL;
1632                 const char CMD[] = "ENT0 0|%s|%d|0||%s||%s|%s|%s";
1633
1634                 Recp = sbstr("recp");
1635                 Cc = sbstr("cc");
1636                 Bcc = sbstr("bcc");
1637                 wikipage = strdup(bstr("page"));
1638                 str_wiki_index(wikipage);
1639
1640                 CmdBuf = NewStrBufPlain(NULL,
1641                                         sizeof (CMD) +
1642                                         StrLength(Recp) +
1643                                         StrLength(display_name) +
1644                                         StrLength(Cc) +
1645                                         StrLength(Bcc) +
1646                                         strlen(wikipage));
1647
1648                 StrBufPrintf(CmdBuf,
1649                              CMD,
1650                              ChrPtr(Recp),
1651                              is_anonymous,
1652                              ChrPtr(display_name),
1653                              ChrPtr(Cc),
1654                              ChrPtr(Bcc),
1655                              wikipage
1656                 );
1657                 serv_puts(ChrPtr(CmdBuf));
1658                 StrBuf_ServGetln(CmdBuf);
1659                 free(wikipage);
1660
1661                 rc = GetServerStatusMsg(CmdBuf, &Result, 0, 0);
1662
1663                 if (    (Result == 570)         /* invalid or missing recipient(s) */
1664                         || (Result == 550)      /* higher access required to send Internet mail */
1665                 ) {
1666                         /* These errors will have been displayed and are excusable */
1667                 }
1668                 else if (rc != 2) {     /* Any other error means that we cannot continue */
1669                         AppendImportantMessage(ChrPtr(CmdBuf) + 4, StrLength(CmdBuf) - 4);
1670                         FreeStrBuf(&CmdBuf);
1671                         fixview();
1672                         readloop(readnew, eUseDefault);
1673                         return;
1674                 }
1675                 FreeStrBuf(&CmdBuf);
1676         }
1677         if (recipient_required)
1678                 PutBstr(HKEY("__RCPTREQUIRED"), NewStrBufPlain(HKEY("1")));
1679         if (recipient_required || subject_required)
1680                 PutBstr(HKEY("__SUBJREQUIRED"), NewStrBufPlain(HKEY("1")));
1681
1682         begin_burst();
1683         output_headers(1, 0, 0, 0, 1, 0);
1684         if ((WCC->CurRoom.defview == VIEW_WIKIMD) || prefer_md)
1685                 DoTemplate(HKEY("edit_markdown_epic"), NULL, &NoCtx);
1686         else
1687                 DoTemplate(HKEY("edit_message"), NULL, &NoCtx);
1688         end_burst();
1689
1690         return;
1691 }
1692
1693 /*
1694  * delete a message
1695  */
1696 void delete_msg(void)
1697 {
1698         long msgid;
1699         StrBuf *Line;
1700
1701         msgid = lbstr("msgid");
1702         Line = NewStrBuf();
1703         if ((WC->CurRoom.RAFlags & UA_ISTRASH) != 0) {  /* Delete from Trash is a real delete */
1704                 serv_printf("DELE %ld", msgid);
1705         }
1706         else {                  /* Otherwise move it to Trash */
1707                 serv_printf("MOVE %ld|_TRASH_|0", msgid);
1708         }
1709
1710         StrBuf_ServGetln(Line);
1711         GetServerStatusMsg(Line, NULL, 1, 0);
1712
1713         fixview();
1714
1715         readloop(readnew, eUseDefault);
1716 }
1717
1718
1719 /*
1720  * move a message to another room
1721  */
1722 void move_msg(void)
1723 {
1724         long msgid;
1725
1726         msgid = lbstr("msgid");
1727
1728         if (havebstr("move_button")) {
1729                 StrBuf *Line;
1730                 serv_printf("MOVE %ld|%s", msgid, bstr("target_room"));
1731                 Line = NewStrBuf();
1732                 StrBuf_ServGetln(Line);
1733                 GetServerStatusMsg(Line, NULL, 1, 0);
1734                 FreeStrBuf(&Line);
1735         } else {
1736                 AppendImportantMessage(_("The message was not moved."), -1);
1737         }
1738
1739         fixview();
1740         readloop(readnew, eUseDefault);
1741 }
1742
1743
1744
1745 /*
1746  * Generic function to output an arbitrary MIME attachment from
1747  * message being composed
1748  *
1749  * partnum              The MIME part to be output
1750  * filename             Fake filename to give
1751  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
1752  */
1753 void postpart(StrBuf *partnum, StrBuf *filename, int force_download)
1754 {
1755         void *vPart;
1756         StrBuf *content_type;
1757         wc_mime_attachment *part;
1758         int i;
1759
1760         i = StrToi(partnum);
1761         if (GetHash(WC->attachments, IKEY(i), &vPart) &&
1762             (vPart != NULL)) {
1763                 part = (wc_mime_attachment*) vPart;
1764                 if (force_download) {
1765                         content_type = NewStrBufPlain(HKEY("application/octet-stream"));
1766                 }
1767                 else {
1768                         content_type = NewStrBufDup(part->ContentType);
1769                 }
1770                 StrBufAppendBuf(WC->WBuf, part->Data, 0);
1771                 http_transmit_thing(ChrPtr(content_type), 0);
1772         } else {
1773                 hprintf("HTTP/1.1 404 %s\n", ChrPtr(partnum));
1774                 output_headers(0, 0, 0, 0, 0, 0);
1775                 hprintf("Content-Type: text/plain\r\n");
1776                 begin_burst();
1777                 wc_printf(_("An error occurred while retrieving this part: %s/%s\n"),
1778                         ChrPtr(partnum), ChrPtr(filename));
1779                 end_burst();
1780         }
1781         FreeStrBuf(&content_type);
1782 }
1783
1784
1785 /*
1786  * Generic function to output an arbitrary MIME part from an arbitrary
1787  * message number on the server.
1788  *
1789  * msgnum               Number of the item on the citadel server
1790  * partnum              The MIME part to be output
1791  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
1792  */
1793 void mimepart(int force_download)
1794 {
1795         int detect_mime = 0;
1796         long msgnum;
1797         long ErrorDetail;
1798         StrBuf *att;
1799         wcsession *WCC = WC;
1800         StrBuf *Buf;
1801         off_t bytes;
1802         StrBuf *ContentType = NewStrBufPlain(HKEY("application/octet-stream"));
1803         const char *CT;
1804
1805         att = Buf = NewStrBuf();
1806         msgnum = StrBufExtract_long(WCC->Hdr->HR.ReqLine, 0, '/');
1807         StrBufExtract_token(att, WCC->Hdr->HR.ReqLine, 1, '/');
1808
1809         serv_printf("OPNA %ld|%s", msgnum, ChrPtr(att));
1810         StrBuf_ServGetln(Buf);
1811         if (GetServerStatus(Buf, &ErrorDetail) == 2) {
1812                 StrBufCutLeft(Buf, 4);
1813                 bytes = StrBufExtract_long(Buf, 0, '|');
1814                 StrBufExtract_token(ContentType, Buf, 3, '|');
1815                 CheckGZipCompressionAllowed (SKEY(ContentType));
1816                 if (force_download)
1817                 {
1818                         FlushStrBuf(ContentType);
1819                         detect_mime = 0;
1820                 }
1821                 else
1822                 {
1823                         if (!strcasecmp(ChrPtr(ContentType), "application/octet-stream"))
1824                         {
1825                                 StrBufExtract_token(Buf, WCC->Hdr->HR.ReqLine, 2, '/');
1826                                 CT = GuessMimeByFilename(SKEY(Buf));
1827                                 StrBufPlain(ContentType, CT, -1);
1828                         }
1829                         if (!strcasecmp(ChrPtr(ContentType), "application/octet-stream"))
1830                         {
1831                                 detect_mime = 1;
1832                         }
1833                 }
1834                 serv_read_binary_to_http(ContentType, bytes, 0, detect_mime);
1835
1836                 serv_read_binary(WCC->WBuf, bytes, Buf);
1837                 serv_puts("CLOS");
1838                 StrBuf_ServGetln(Buf);
1839                 CT = ChrPtr(ContentType);
1840         } else {
1841                 StrBufCutLeft(Buf, 4);
1842                 switch (ErrorDetail) {
1843                 default:
1844                 case ERROR + MESSAGE_NOT_FOUND:
1845                         hprintf("HTTP/1.1 404 %s\n", ChrPtr(Buf));
1846                         break;
1847                 case ERROR + NOT_LOGGED_IN:
1848                         hprintf("HTTP/1.1 401 %s\n", ChrPtr(Buf));
1849                         break;
1850
1851                 case ERROR + HIGHER_ACCESS_REQUIRED:
1852                         hprintf("HTTP/1.1 403 %s\n", ChrPtr(Buf));
1853                         break;
1854                 case ERROR + INTERNAL_ERROR:
1855                 case ERROR + TOO_BIG:
1856                         hprintf("HTTP/1.1 500 %s\n", ChrPtr(Buf));
1857                         break;
1858                 }
1859
1860                 hprintf("Pragma: no-cache\r\n"
1861                         "Cache-Control: no-store\r\n"
1862                         "Expires: -1\r\n"
1863                 );
1864
1865                 hprintf("Content-Type: text/plain\r\n");
1866                 begin_burst();
1867                 wc_printf(_("An error occurred while retrieving this part: %s\n"),
1868                         ChrPtr(Buf));
1869                 end_burst();
1870         }
1871         FreeStrBuf(&ContentType);
1872         FreeStrBuf(&Buf);
1873 }
1874
1875
1876 /*
1877  * Read any MIME part of a message, from the server, into memory.
1878  */
1879 StrBuf *load_mimepart(long msgnum, char *partnum)
1880 {
1881         off_t bytes;
1882         StrBuf *Buf;
1883
1884         Buf = NewStrBuf();
1885         serv_printf("DLAT %ld|%s", msgnum, partnum);
1886         StrBuf_ServGetln(Buf);
1887         if (GetServerStatus(Buf, NULL) == 6) {
1888                 StrBufCutLeft(Buf, 4);
1889                 bytes = StrBufExtract_long(Buf, 0, '|');
1890                 FreeStrBuf(&Buf);
1891                 Buf = NewStrBuf();
1892                 StrBuf_ServGetBLOBBuffered(Buf, bytes);
1893                 return(Buf);
1894         }
1895         else {
1896                 FreeStrBuf(&Buf);
1897                 return(NULL);
1898         }
1899 }
1900
1901 /*
1902  * Read any MIME part of a message, from the server, into memory.
1903  */
1904 void MimeLoadData(wc_mime_attachment *Mime)
1905 {
1906         StrBuf *Buf;
1907         const char *Ptr;
1908         off_t bytes;
1909         /* TODO: is there a chance the content type is different from the one we know? */
1910
1911         serv_printf("DLAT %ld|%s", Mime->msgnum, ChrPtr(Mime->PartNum));
1912         Buf = NewStrBuf();
1913         StrBuf_ServGetln(Buf);
1914         if (GetServerStatus(Buf, NULL) == 6) {
1915                 Ptr = &(ChrPtr(Buf)[4]);
1916                 bytes = StrBufExtractNext_long(Buf, &Ptr, '|');
1917                 StrBufSkip_NTokenS(Buf, &Ptr, '|', 3);  /* filename, cbtype, mimetype */
1918                 if (Mime->Charset == NULL) Mime->Charset = NewStrBuf();
1919                 StrBufExtract_NextToken(Mime->Charset, Buf, &Ptr, '|');
1920
1921                 if (Mime->Data == NULL)
1922                         Mime->Data = NewStrBufPlain(NULL, bytes);
1923                 StrBuf_ServGetBLOBBuffered(Mime->Data, bytes);
1924         }
1925         else {
1926                 FlushStrBuf(Mime->Data);
1927                 /* TODO XImportant message */
1928         }
1929         FreeStrBuf(&Buf);
1930 }
1931
1932
1933 void view_mimepart(void) {
1934         mimepart(0);
1935 }
1936
1937 void download_mimepart(void) {
1938         mimepart(1);
1939 }
1940
1941 void view_postpart(void) {
1942         StrBuf *filename = NewStrBuf();
1943         StrBuf *partnum = NewStrBuf();
1944
1945         StrBufExtract_token(partnum, WC->Hdr->HR.ReqLine, 0, '/');
1946         StrBufExtract_token(filename, WC->Hdr->HR.ReqLine, 1, '/');
1947
1948         postpart(partnum, filename, 0);
1949
1950         FreeStrBuf(&filename);
1951         FreeStrBuf(&partnum);
1952 }
1953
1954 void download_postpart(void) {
1955         StrBuf *filename = NewStrBuf();
1956         StrBuf *partnum = NewStrBuf();
1957
1958         StrBufExtract_token(partnum, WC->Hdr->HR.ReqLine, 0, '/');
1959         StrBufExtract_token(filename, WC->Hdr->HR.ReqLine, 1, '/');
1960
1961         postpart(partnum, filename, 1);
1962
1963         FreeStrBuf(&filename);
1964         FreeStrBuf(&partnum);
1965 }
1966
1967
1968
1969 void show_num_attachments(void) {
1970         wc_printf("%d", GetCount(WC->attachments));
1971 }
1972
1973
1974 void h_readnew(void) { readloop(readnew, eUseDefault);}
1975 void h_readold(void) { readloop(readold, eUseDefault);}
1976 void h_readfwd(void) { readloop(readfwd, eUseDefault);}
1977 void h_headers(void) { readloop(headers, eUseDefault);}
1978 void h_do_search(void) { readloop(do_search, eUseDefault);}
1979 void h_readgt(void) { readloop(readgt, eUseDefault);}
1980 void h_readlt(void) { readloop(readlt, eUseDefault);}
1981
1982
1983
1984 /* Output message list in JSON format */
1985 void jsonMessageList(void) {
1986         StrBuf *View = NewStrBuf();
1987         const StrBuf *room = sbstr("room");
1988         long oper = (havebstr("query")) ? do_search : readnew;
1989         StrBufPrintf(View, "%d", VIEW_JSON_LIST);
1990         putbstr("view", View);;
1991         gotoroom(room);
1992         readloop(oper, eUseDefault);
1993 }
1994
1995 void RegisterReadLoopHandlerset(
1996         int RoomType,
1997         GetParamsGetServerCall_func GetParamsGetServerCall,
1998         PrintViewHeader_func PrintPageHeader,
1999         PrintViewHeader_func PrintViewHeader,
2000         load_msg_ptrs_detailheaders LH,
2001         LoadMsgFromServer_func LoadMsgFromServer,
2002         RenderView_or_Tail_func RenderView_or_Tail,
2003         View_Cleanup_func ViewCleanup
2004         )
2005 {
2006         RoomRenderer *Handler;
2007
2008         Handler = (RoomRenderer*) malloc(sizeof(RoomRenderer));
2009
2010         Handler->RoomType = RoomType;
2011         Handler->GetParamsGetServerCall = GetParamsGetServerCall;
2012         Handler->PrintPageHeader = PrintPageHeader;
2013         Handler->PrintViewHeader = PrintViewHeader;
2014         Handler->LoadMsgFromServer = LoadMsgFromServer;
2015         Handler->RenderView_or_Tail = RenderView_or_Tail;
2016         Handler->ViewCleanup = ViewCleanup;
2017         Handler->LHParse = LH;
2018
2019         Put(ReadLoopHandler, IKEY(RoomType), Handler, NULL);
2020 }
2021
2022 void
2023 InitModule_MSG
2024 (void)
2025 {
2026         RegisterPreference("use_sig",
2027                            _("Attach signature to email messages?"),
2028                            PRF_YESNO,
2029                            NULL);
2030         RegisterPreference("signature", _("Use this signature:"), PRF_QP_STRING, NULL);
2031         RegisterPreference("default_header_charset",
2032                            _("Default character set for email headers:"),
2033                            PRF_STRING,
2034                            NULL);
2035         RegisterPreference("defaultfrom", _("Preferred email address"), PRF_STRING, NULL);
2036         RegisterPreference("defaultname",
2037                            _("Preferred display name for email messages"),
2038                            PRF_STRING,
2039                            NULL);
2040         RegisterPreference("defaulthandle",
2041                            _("Preferred display name for bulletin board posts"),
2042                            PRF_STRING,
2043                            NULL);
2044         RegisterPreference("mailbox",_("Mailbox view mode"), PRF_STRING, NULL);
2045         RegisterPreference("markdown",_("Prefer markdown editing"), PRF_YESNO, NULL);
2046
2047
2048         WebcitAddUrlHandler(HKEY("readnew"), "", 0, h_readnew, ANONYMOUS|NEED_URL);
2049         WebcitAddUrlHandler(HKEY("readold"), "", 0, h_readold, ANONYMOUS|NEED_URL);
2050         WebcitAddUrlHandler(HKEY("readfwd"), "", 0, h_readfwd, ANONYMOUS|NEED_URL);
2051         WebcitAddUrlHandler(HKEY("headers"), "", 0, h_headers, NEED_URL);
2052         WebcitAddUrlHandler(HKEY("readgt"), "", 0, h_readgt, ANONYMOUS|NEED_URL);
2053         WebcitAddUrlHandler(HKEY("readlt"), "", 0, h_readlt, ANONYMOUS|NEED_URL);
2054         WebcitAddUrlHandler(HKEY("do_search"), "", 0, h_do_search, 0);
2055         WebcitAddUrlHandler(HKEY("display_enter"), "", 0, display_enter, 0);
2056         WebcitAddUrlHandler(HKEY("post"), "", 0, post_message, PROHIBIT_STARTPAGE);
2057         WebcitAddUrlHandler(HKEY("move_msg"), "", 0, move_msg, PROHIBIT_STARTPAGE);
2058         WebcitAddUrlHandler(HKEY("delete_msg"), "", 0, delete_msg, PROHIBIT_STARTPAGE);
2059         WebcitAddUrlHandler(HKEY("msg"), "", 0, embed_message, NEED_URL);
2060         WebcitAddUrlHandler(HKEY("message"), "", 0, handle_one_message, NEED_URL|XHTTP_COMMANDS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
2061         WebcitAddUrlHandler(HKEY("printmsg"), "", 0, print_message, NEED_URL);
2062         WebcitAddUrlHandler(HKEY("msgheaders"), "", 0, display_headers, NEED_URL);
2063
2064         WebcitAddUrlHandler(HKEY("mimepart"), "", 0, view_mimepart, NEED_URL);
2065         WebcitAddUrlHandler(HKEY("mimepart_download"), "", 0, download_mimepart, NEED_URL);
2066         WebcitAddUrlHandler(HKEY("postpart"), "", 0, view_postpart, NEED_URL|PROHIBIT_STARTPAGE);
2067         WebcitAddUrlHandler(HKEY("postpart_download"), "", 0, download_postpart, NEED_URL|PROHIBIT_STARTPAGE);
2068         WebcitAddUrlHandler(HKEY("upload_attachment"), "", 0, upload_attachment, AJAX);
2069         WebcitAddUrlHandler(HKEY("remove_attachment"), "", 0, remove_attachment, AJAX);
2070         WebcitAddUrlHandler(HKEY("show_num_attachments"), "", 0, show_num_attachments, AJAX);
2071
2072         /* json */
2073         WebcitAddUrlHandler(HKEY("roommsgs"), "", 0, jsonMessageList,0);
2074 }
2075
2076 void
2077 SessionDetachModule_MSG
2078 (wcsession *sess)
2079 {
2080         DeleteHash(&sess->summ);
2081 }