webcit/messages.c

   1 // Functions which deal with the fetching and displaying of messages.
   2 //
   3 // Copyright (c) 1996-2022 by the citadel.org team
   4 //
   5 // This program is open source software.  We call it open source, not
   6 // free software, because Richard Stallman is a communist and an asshole.
   7 // No one has done more damage to open source software than Stallman (ok,
   8 // maybe Nat and Miguel have done more damage, but they were paid by
   9 // Microsoft to do so).  Richard Stallman is a far-left ultra-communist
  10 // who hates America, hates freedom, and deserves to be canceled.
  11 //
  12 // The program is licensed under the General Public License, version 3.
  13 //
  14 // This program is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18
  19 #include "webcit.h"
  20
  21 #include "dav.h"
  22 #include "calendar.h"
  23
  24 HashList *MimeRenderHandler = NULL;
  25 HashList *ReadLoopHandler = NULL;
  26 int dbg_analyze_msg = 0;
  27
  28 #define SUBJ_COL_WIDTH_PCT              50      /* Mailbox view column width */
  29 #define SENDER_COL_WIDTH_PCT            30      /* Mailbox view column width */
  30 #define DATE_PLUS_BUTTONS_WIDTH_PCT     20      /* Mailbox view column width */
  31
  32 void fixview() {
  33         /* workaround for json listview; its not useable directly */
  34         if (WC->CurRoom.view == VIEW_JSON_LIST) {
  35                 StrBuf *View = NewStrBuf();
  36                 StrBufPrintf(View, "%d", VIEW_MAILBOX);
  37                 putbstr("view", View);;
  38         }
  39 }
  40
  41
  42 int load_message(message_summary *Msg, StrBuf *FoundCharset, StrBuf **Error) {
  43         StrBuf *Buf;
  44         StrBuf *HdrToken;
  45         char buf[SIZ];
  46         int Done = 0;
  47         int state=0;
  48         int rc;
  49
  50         Buf = NewStrBuf();
  51         if (Msg->PartNum != NULL) {
  52                 serv_printf("MSG4 %ld|%s", Msg->msgnum, ChrPtr(Msg->PartNum));
  53         }
  54         else {
  55                 serv_printf("MSG4 %ld", Msg->msgnum);
  56         }
  57
  58         StrBuf_ServGetln(Buf);
  59         if (GetServerStatus(Buf, NULL) != 1) {
  60                 *Error = NewStrBuf();
  61                 StrBufAppendPrintf(*Error, "<strong>");
  62                 StrBufAppendPrintf(*Error, _("ERROR:"));
  63                 StrBufAppendPrintf(*Error, "</strong> %s<br>\n", &buf[4]);
  64                 FreeStrBuf(&Buf);
  65                 return 0;
  66         }
  67
  68         /* begin everythingamundo table */
  69         HdrToken = NewStrBuf();
  70         while (!Done && StrBuf_ServGetln(Buf)>=0) {
  71                 if ( (StrLength(Buf)==3) &&
  72                     !strcmp(ChrPtr(Buf), "000"))
  73                 {
  74                         Done = 1;
  75                         if (state < 2) {
  76                                 if (Msg->MsgBody->Data == NULL)
  77                                         Msg->MsgBody->Data = NewStrBuf();
  78                                 Msg->MsgBody->ContentType = NewStrBufPlain(HKEY("text/html"));
  79                                 StrBufAppendPrintf(Msg->MsgBody->Data, "<div><i>");
  80                                 StrBufAppendPrintf(Msg->MsgBody->Data, _("Empty message"));
  81                                 StrBufAppendPrintf(Msg->MsgBody->Data, "</i><br><br>\n");
  82                                 StrBufAppendPrintf(Msg->MsgBody->Data, "</div>\n");
  83                         }
  84                         break;
  85                 }
  86                 switch (state) {
  87                 case 0:/* Citadel Message Headers */
  88                         if (StrLength(Buf) == 0) {
  89                                 state ++;
  90                                 break;
  91                         }
  92                         StrBufExtract_token(HdrToken, Buf, 0, '=');
  93                         StrBufCutLeft(Buf, StrLength(HdrToken) + 1);
  94
  95                         /* look up one of the examine_* functions to parse the content */
  96                         rc =  EvaluateMsgHdr(SKEY(HdrToken), Msg, Buf, FoundCharset);
  97                         if (rc == 1) {
  98                                 state++;
  99                         }
 100                         /* TODO:
 101                         else LogError(Target,
 102                                       __FUNCTION__,
 103                                       "don't know how to handle message header[%s]\n",
 104                                       ChrPtr(HdrToken));
 105                          */
 106                         break;
 107                 case 1:/* Message Mime Header */
 108                         if (StrLength(Buf) == 0) {
 109                                 state++;
 110                                 if (Msg->MsgBody->ContentType == NULL)
 111                                         /* end of header or no header? */
 112                                         Msg->MsgBody->ContentType = NewStrBufPlain(HKEY("text/plain"));
 113                                  /* usual end of mime header */
 114                         }
 115                         else
 116                         {
 117                                 StrBufExtract_token(HdrToken, Buf, 0, ':');
 118                                 if (StrLength(HdrToken) > 0) {
 119                                         StrBufCutLeft(Buf, StrLength(HdrToken) + 1);
 120                                         /* the examine*'s know how to do with mime headers too... */
 121                                         EvaluateMsgHdr(SKEY(HdrToken), Msg, Buf, FoundCharset);
 122
 123                                         break;
 124                                 }
 125                         }
 126                 case 2: /* Message Body */
 127
 128                         if (Msg->MsgBody->size_known > 0) {
 129                                 StrBuf_ServGetBLOBBuffered(Msg->MsgBody->Data, Msg->MsgBody->length);
 130                                 state ++;
 131                                 /*/ todo: check next line, if not 000, append following lines */
 132                         }
 133                         else if (1){
 134                                 if (StrLength(Msg->MsgBody->Data) > 0)
 135                                         StrBufAppendBufPlain(Msg->MsgBody->Data, "\n", 1, 0);
 136                                 StrBufAppendBuf(Msg->MsgBody->Data, Buf, 0);
 137                         }
 138                         break;
 139                 case 3:
 140                         StrBufAppendBuf(Msg->MsgBody->Data, Buf, 0);
 141                         break;
 142                 }
 143         }
 144
 145         if (Msg->AllAttach == NULL)
 146                 Msg->AllAttach = NewHash(1,NULL);
 147         /* now we put the body mimepart we read above into the mimelist */
 148         Put(Msg->AllAttach, SKEY(Msg->MsgBody->PartNum), Msg->MsgBody, DestroyMime);
 149
 150         FreeStrBuf(&Buf);
 151         FreeStrBuf(&HdrToken);
 152         return 1;
 153 }
 154
 155
 156 /*
 157  * Display a message to the user
 158  *
 159  * msgnum               Message number to display
 160  * printable_view       Nonzero to display a printable view
 161  * section              Optional for encapsulated message/rfc822 submessage
 162  */
 163 int read_message(StrBuf *Target, const char *tmpl, long tmpllen, long msgnum, const StrBuf *PartNum, const StrBuf **OutMime, WCTemplputParams *TP) {
 164         StrBuf *Buf;
 165         StrBuf *FoundCharset;
 166         HashPos  *it;
 167         void *vMime;
 168         message_summary *Msg = NULL;
 169         void *vHdr;
 170         long len;
 171         const char *Key;
 172         WCTemplputParams SuperTP;
 173         WCTemplputParams SubTP;
 174         StrBuf *Error = NULL;
 175
 176         memset(&SuperTP, 0, sizeof(WCTemplputParams));
 177         memset(&SubTP, 0, sizeof(WCTemplputParams));
 178
 179         Buf = NewStrBuf();
 180         FoundCharset = NewStrBuf();
 181         Msg = (message_summary *)malloc(sizeof(message_summary));
 182         if (!Msg) {
 183                 syslog(LOG_DEBUG, "malloc() error");
 184         }
 185         memset(Msg, 0, sizeof(message_summary));
 186         Msg->msgnum = msgnum;
 187         Msg->PartNum = PartNum;
 188         Msg->MsgBody =  (wc_mime_attachment*) malloc(sizeof(wc_mime_attachment));
 189         if (!Msg->MsgBody) {
 190                 syslog(LOG_DEBUG, "malloc() error");
 191         }
 192         memset(Msg->MsgBody, 0, sizeof(wc_mime_attachment));
 193         Msg->MsgBody->msgnum = msgnum;
 194
 195         if (!load_message(Msg, FoundCharset, &Error)) {
 196                 StrBufAppendBuf(Target, Error, 0);
 197                 FreeStrBuf(&Error);
 198         }
 199
 200         /* Extract just the content-type (omit attributes such as "charset") */
 201         StrBufExtract_token(Buf, Msg->MsgBody->ContentType, 0, ';');
 202         StrBufTrim(Buf);
 203         StrBufLowerCase(Buf);
 204
 205         StackContext(TP, &SuperTP, Msg, CTX_MAILSUM, 0, NULL);
 206         {
 207                 /* Locate a renderer capable of converting this MIME part into HTML */
 208                 if (GetHash(MimeRenderHandler, SKEY(Buf), &vHdr) &&
 209                     (vHdr != NULL)) {
 210                         RenderMimeFuncStruct *Render;
 211
 212                         StackContext(&SuperTP, &SubTP, Msg->MsgBody, CTX_MIME_ATACH, 0, NULL);
 213                         {
 214                                 Render = (RenderMimeFuncStruct*)vHdr;
 215                                 Render->f(Target, &SubTP, FoundCharset);
 216                         }
 217                         UnStackContext(&SubTP);
 218                 }
 219
 220                 if (StrLength(Msg->reply_references)> 0) {
 221                         /* Trim down excessively long lists of thread references.  We eliminate the
 222                          * second one in the list so that the thread root remains intact.
 223                          */
 224                         int rrtok = num_tokens(ChrPtr(Msg->reply_references), '|');
 225                         int rrlen = StrLength(Msg->reply_references);
 226                         if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
 227                                 StrBufRemove_token(Msg->reply_references, 1, '|');
 228                         }
 229                 }
 230
 231                 /* now check if we need to translate some mimeparts, and remove the duplicate */
 232                 it = GetNewHashPos(Msg->AllAttach, 0);
 233                 while (GetNextHashPos(Msg->AllAttach, it, &len, &Key, &vMime) &&
 234                        (vMime != NULL)) {
 235                         StackContext(&SuperTP, &SubTP, vMime, CTX_MIME_ATACH, 0, NULL);
 236                         {
 237                                 evaluate_mime_part(Target, &SubTP);
 238                         }
 239                         UnStackContext(&SubTP);
 240                 }
 241                 DeleteHashPos(&it);
 242                 *OutMime = DoTemplate(tmpl, tmpllen, Target, &SuperTP);
 243         }
 244         UnStackContext(&SuperTP);
 245
 246         DestroyMessageSummary(Msg);
 247         FreeStrBuf(&FoundCharset);
 248         FreeStrBuf(&Buf);
 249         return 1;
 250 }
 251
 252
 253 long HttpStatus(long CitadelStatus) {
 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 SEND_THEN_RECV:
 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 /*
 321  * Unadorned HTML output of an individual message, suitable
 322  * for placing in a hidden iframe, for printing, or whatever
 323  */
 324 void handle_one_message(void) {
 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         const StrBuf *Tmpl;
 332         StrBuf *CmdBuf = NULL;
 333         const char *pMsg;
 334
 335         pMsg = strchr(ChrPtr(WC->Hdr->HR.ReqLine), '/');
 336         if (pMsg == NULL) {
 337                 HttpStatus(CitStatus);
 338                 return;
 339         }
 340
 341         msgnum = atol(pMsg + 1);
 342         StrBufCutAt(WC->Hdr->HR.ReqLine, 0, pMsg);
 343         gotoroom(WC->Hdr->HR.ReqLine);
 344         switch (WC->Hdr->HR.eReqType)
 345         {
 346         case eGET:
 347         case ePOST:
 348                 Tmpl = sbstr("template");
 349                 if (StrLength(Tmpl) > 0)
 350                         read_message(WC->WBuf, SKEY(Tmpl), msgnum, NULL, &Mime, NULL);
 351                 else
 352                         read_message(WC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime, NULL);
 353                 http_transmit_thing(ChrPtr(Mime), 0);
 354                 break;
 355         case eDELETE:
 356                 CmdBuf = NewStrBuf ();
 357                 if ((WC->CurRoom.RAFlags & UA_ISTRASH) != 0) {  /* Delete from Trash is a real delete */
 358                         serv_printf("DELE %ld", msgnum);
 359                 }
 360                 else {                  /* Otherwise move it to Trash */
 361                         serv_printf("MOVE %ld|_TRASH_|0", msgnum);
 362                 }
 363                 StrBuf_ServGetln(CmdBuf);
 364                 GetServerStatusMsg(CmdBuf, &CitStatus, 1, 0);
 365                 HttpStatus(CitStatus);
 366                 break;
 367         case eCOPY:
 368                 CopyMessage = 1;
 369         case eMOVE:
 370                 if (GetHash(WC->Hdr->HTTPHeaders, HKEY("DESTINATION"), &vLine) &&
 371                     (vLine!=NULL)) {
 372                         Destination = (StrBuf*) vLine;
 373                         serv_printf("MOVE %ld|%s|%d", msgnum, ChrPtr(Destination), CopyMessage);
 374                         StrBuf_ServGetln(CmdBuf);
 375                         GetServerStatusMsg(CmdBuf, NULL, 1, 0);
 376                         GetServerStatus(CmdBuf, &CitStatus);
 377                         HttpStatus(CitStatus);
 378                 }
 379                 else
 380                         HttpStatus(500);
 381                 break;
 382         default:
 383                 break;
 384
 385         }
 386 }
 387
 388
 389 /*
 390  * Unadorned HTML output of an individual message, suitable
 391  * for placing in a hidden iframe, for printing, or whatever
 392  */
 393 void embed_message(void) {
 394         const StrBuf *Mime;
 395         long msgnum = 0L;
 396         const StrBuf *Tmpl;
 397         StrBuf *CmdBuf = NULL;
 398
 399         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
 400         if (msgnum <= 0) return;
 401
 402         switch (WC->Hdr->HR.eReqType)
 403         {
 404         case eGET:
 405         case ePOST:
 406                 Tmpl = sbstr("template");
 407                 if (StrLength(Tmpl) > 0)
 408                         read_message(WC->WBuf, SKEY(Tmpl), msgnum, NULL, &Mime, NULL);
 409                 else
 410                         read_message(WC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime, NULL);
 411                 http_transmit_thing(ChrPtr(Mime), 0);
 412                 break;
 413         case eDELETE:
 414                 CmdBuf = NewStrBuf ();
 415                 if ((WC->CurRoom.RAFlags & UA_ISTRASH) != 0) {  /* Delete from Trash is a real delete */
 416                         serv_printf("DELE %ld", msgnum);
 417                 }
 418                 else {                  /* Otherwise move it to Trash */
 419                         serv_printf("MOVE %ld|_TRASH_|0", msgnum);
 420                 }
 421                 StrBuf_ServGetln(CmdBuf);
 422                 GetServerStatusMsg(CmdBuf, NULL, 1, 0);
 423                 break;
 424         default:
 425                 break;
 426
 427         }
 428 }
 429
 430
 431 /*
 432  * Printable view of a message
 433  */
 434 void print_message(void) {
 435         long msgnum = 0L;
 436         const StrBuf *Mime;
 437
 438         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
 439         output_headers(0, 0, 0, 0, 0, 0);
 440
 441         hprintf("Content-type: text/html\r\n"
 442                 "Server: " PACKAGE_STRING "\r\n"
 443                 "Connection: close\r\n");
 444
 445         begin_burst();
 446
 447         read_message(WC->WBuf, HKEY("view_message_print"), msgnum, NULL, &Mime, NULL);
 448
 449         wDumpContent(0);
 450 }
 451
 452
 453 /*
 454  * Display a message's headers
 455  */
 456 void display_headers(void) {
 457         long msgnum = 0L;
 458         char buf[1024];
 459
 460         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
 461         output_headers(0, 0, 0, 0, 0, 0);
 462
 463         hprintf("Content-type: text/plain\r\n"
 464                 "Server: %s\r\n"
 465                 "Connection: close\r\n",
 466                 PACKAGE_STRING);
 467         begin_burst();
 468
 469         serv_printf("MSG2 %ld|1", msgnum);
 470         serv_getln(buf, sizeof buf);
 471         if (buf[0] == '1') {
 472                 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 473                         wc_printf("%s\n", buf);
 474                 }
 475         }
 476
 477         wDumpContent(0);
 478 }
 479
 480
 481 /*
 482  * load message pointers from the server for a "read messages" operation
 483  *
 484  * servcmd:             the citadel command to send to the citserver
 485  */
 486 int load_msg_ptrs(const char *servcmd,
 487                   const char *filter,
 488                   StrBuf *FoundCharset,
 489                   SharedMessageStatus *Stat,
 490                   void **ViewSpecific,
 491                   load_msg_ptrs_detailheaders LH,
 492                   StrBuf *FetchMessageList,
 493                   eMessageField *MessageFieldList,
 494                   long HeaderCount)
 495 {
 496         message_summary *Msg;
 497         StrBuf *Buf, *Buf2;
 498         long len;
 499         int n;
 500         int skipit;
 501         const char *Ptr = NULL;
 502         int StatMajor;
 503
 504         Stat->lowest_found = LONG_MAX;
 505         Stat->highest_found = LONG_MIN;
 506
 507         if (WC->summ != NULL) {
 508                 DeleteHash(&WC->summ);
 509         }
 510         WC->summ = NewHash(1, Flathash);
 511
 512         Buf = NewStrBuf();
 513         serv_puts(servcmd);
 514         StrBuf_ServGetln(Buf);
 515         StatMajor = GetServerStatus(Buf, NULL);
 516         switch (StatMajor) {
 517         case 1:
 518                 break;
 519         case 8:
 520                 if (filter != NULL) {
 521                         serv_puts(filter);
 522                         serv_puts("000");
 523                         break;
 524                 }
 525                 else if (FetchMessageList != NULL) {
 526                         serv_putbuf(FetchMessageList);
 527                         break;
 528                 }
 529                 /* fall back to empty filter in case of we were fooled... */
 530                 serv_puts("");
 531                 serv_puts("000");
 532                 break;
 533         default:
 534                 FreeStrBuf(&Buf);
 535                 return (Stat->nummsgs);
 536         }
 537         Buf2 = NewStrBuf();
 538         while (len = StrBuf_ServGetln(Buf), ((len >= 0) && ((len != 3) || strcmp(ChrPtr(Buf), "000")!= 0))) {
 539                 if (Stat->nummsgs < Stat->maxload) {
 540                         skipit = 0;
 541                         Ptr = NULL;
 542                         Msg = (message_summary*)malloc(sizeof(message_summary));
 543                         if (!Msg) {
 544                                 syslog(LOG_DEBUG, "malloc() error");
 545                         }
 546                         memset(Msg, 0, sizeof(message_summary));
 547
 548                         Msg->msgnum = StrBufExtractNext_long(Buf, &Ptr, '|');
 549                         Msg->date = StrBufExtractNext_long(Buf, &Ptr, '|');
 550                         if (MessageFieldList != NULL) {
 551                                 long i;
 552                                 for (i = 0; i < HeaderCount; i++) {
 553                                         StrBufExtract_NextToken(Buf2, Buf, &Ptr, '|');
 554                                         if (StrLength(Buf2) > 0) {
 555                                                 EvaluateMsgHdrEnum(MessageFieldList[i], Msg, Buf2, FoundCharset);
 556                                         }
 557                                 }
 558                         }
 559                         else {
 560                                 if (Stat->nummsgs == 0) {
 561                                         if (Msg->msgnum < Stat->lowest_found) {
 562                                                 Stat->lowest_found = Msg->msgnum;
 563                                         }
 564                                         if (Msg->msgnum > Stat->highest_found) {
 565                                                 Stat->highest_found = Msg->msgnum;
 566                                         }
 567                                 }
 568
 569                                 if ((Msg->msgnum == 0) && (StrLength(Buf) < 32)) {
 570                                         free(Msg);
 571                                         continue;
 572                                 }
 573                         }
 574                         /*
 575                          * as citserver probably gives us messages in forward date sorting
 576                          * nummsgs should be the same order as the message date.
 577                          */
 578                         if (Msg->date == 0) {
 579                                 Msg->date = Stat->nummsgs;
 580                                 if (StrLength(Buf) < 32)
 581                                         skipit = 1;
 582                         }
 583                         if ((!skipit) && (LH != NULL)) {
 584                                 if (!LH(Buf, &Ptr, Msg, Buf2, ViewSpecific)){
 585                                         free(Msg);
 586                                         continue;
 587                                 }
 588                         }
 589                         n = Msg->msgnum;
 590                         Put(WC->summ, (const char *)&n, sizeof(n), Msg, DestroyMessageSummary);
 591                 }
 592                 Stat->nummsgs++;
 593         }
 594         FreeStrBuf(&Buf2);
 595         FreeStrBuf(&Buf);
 596         return (Stat->nummsgs);
 597 }
 598
 599
 600 /*
 601  * sets FlagToSet for each of ScanMe that appears in MatchMSet
 602  * ScanMe:       List of BasicMsgStruct to be searched it MatchSet
 603  * MatchMSet:    MSet we want to flag
 604  * FlagToSet:    Flag to set on each BasicMsgStruct->Flags if in MSet
 605  */
 606 long SetFlagsFromMSet(HashList *ScanMe, MSet *MatchMSet, int FlagToSet, int Reverse) {
 607         const char *HashKey;
 608         long HKLen;
 609         long count = 0;
 610         HashPos *at;
 611         void *vMsg;
 612         message_summary *Msg;
 613
 614         at = GetNewHashPos(ScanMe, 0);
 615         while (GetNextHashPos(ScanMe, at, &HKLen, &HashKey, &vMsg)) {
 616                 /* Are you a new message, or an old message? */
 617                 Msg = (message_summary*) vMsg;
 618                 if (Reverse && IsInMSetList(MatchMSet, Msg->msgnum)) {
 619                         Msg->Flags = Msg->Flags | FlagToSet;
 620                         count++;
 621                 }
 622                 else if (!Reverse && !IsInMSetList(MatchMSet, Msg->msgnum)) {
 623                         Msg->Flags = Msg->Flags | FlagToSet;
 624                         count++;
 625                 }
 626         }
 627         DeleteHashPos(&at);
 628         return count;
 629 }
 630
 631
 632 long load_seen_flags(void) {
 633         long count = 0;
 634         StrBuf *OldMsg;
 635         MSet *MatchMSet;
 636
 637         OldMsg = NewStrBuf();
 638         serv_puts("GTSN");
 639         StrBuf_ServGetln(OldMsg);
 640         if (GetServerStatus(OldMsg, NULL) == 2) {
 641                 StrBufCutLeft(OldMsg, 4);
 642         }
 643         else {
 644                 FreeStrBuf(&OldMsg);
 645                 return 0;
 646         }
 647
 648         if (ParseMSet(&MatchMSet, OldMsg))
 649         {
 650                 count = SetFlagsFromMSet(WC->summ, MatchMSet, MSGFLAG_READ, 0);
 651         }
 652         DeleteMSet(&MatchMSet);
 653         FreeStrBuf(&OldMsg);
 654         return count;
 655 }
 656
 657 extern readloop_struct rlid[];
 658
 659 typedef struct _RoomRenderer{
 660         int RoomType;
 661
 662         GetParamsGetServerCall_func GetParamsGetServerCall;
 663
 664         PrintViewHeader_func PrintPageHeader;
 665         PrintViewHeader_func PrintViewHeader;
 666         LoadMsgFromServer_func LoadMsgFromServer;
 667         RenderView_or_Tail_func RenderView_or_Tail;
 668         View_Cleanup_func ViewCleanup;
 669         load_msg_ptrs_detailheaders LHParse;
 670         long HeaderCount;
 671         StrBuf *FetchMessageList;
 672         eMessageField *MessageFieldList;
 673 } RoomRenderer;
 674
 675
 676 /*
 677  * command loop for reading messages
 678  *
 679  * Set oper to "readnew" or "readold" or "readfwd" or "headers" or "readgt" or "readlt" or "do_search"
 680  */
 681 void readloop(long oper, eCustomRoomRenderer ForceRenderer) {
 682         RoomRenderer *ViewMsg;
 683         void *vViewMsg;
 684         void *vMsg;
 685         message_summary *Msg;
 686         char cmd[256] = "";
 687         char filter[256] = "";
 688         int i, r;
 689         HashPos *at;
 690         const char *HashKey;
 691         long HKLen;
 692         WCTemplputParams SubTP;
 693         SharedMessageStatus Stat;
 694         void *ViewSpecific = NULL;
 695
 696         if (havebstr("is_summary") && (1 == (ibstr("is_summary")))) {
 697                 WC->CurRoom.view = VIEW_MAILBOX;
 698         }
 699
 700         if (havebstr("view")) {
 701                 WC->CurRoom.view = ibstr("view");
 702         }
 703
 704         memset(&Stat, 0, sizeof(SharedMessageStatus));
 705         Stat.maxload = 10000;
 706         Stat.lowest_found = (-1);
 707         Stat.highest_found = (-1);
 708         if (ForceRenderer == eUseDefault)
 709                 GetHash(ReadLoopHandler, IKEY(WC->CurRoom.view), &vViewMsg);
 710         else
 711                 GetHash(ReadLoopHandler, IKEY(ForceRenderer), &vViewMsg);
 712         if (vViewMsg == NULL) {
 713                 WC->CurRoom.view = VIEW_BBS;
 714                 GetHash(ReadLoopHandler, IKEY(WC->CurRoom.view), &vViewMsg);
 715         }
 716         if (vViewMsg == NULL) {
 717                 return;                 /* TODO: print message */
 718         }
 719
 720         ViewMsg = (RoomRenderer*) vViewMsg;
 721         if (ViewMsg->PrintPageHeader == NULL)
 722                 output_headers(1, 1, 1, 0, 0, 0);
 723         else
 724                 ViewMsg->PrintPageHeader(&Stat, ViewSpecific);
 725
 726         if (ViewMsg->GetParamsGetServerCall != NULL) {
 727                 r = ViewMsg->GetParamsGetServerCall(
 728                        &Stat,
 729                        &ViewSpecific,
 730                        oper,
 731                        cmd, sizeof(cmd),
 732                        filter, sizeof(filter)
 733                 );
 734         } else {
 735                 r = 0;
 736         }
 737
 738         switch(r)
 739         {
 740         case 400:
 741         case 404:
 742
 743                 return;
 744         case 300: /* the callback hook should do the work for us here, since he knows what to do. */
 745                 return;
 746         case 200:
 747         default:
 748                 break;
 749         }
 750         if (!IsEmptyStr(cmd)) {
 751                 const char *p = NULL;
 752                 StrBuf *FoundCharset = NULL;
 753                 if (!IsEmptyStr(filter))
 754                         p = filter;
 755                 if (ViewMsg->HeaderCount > 0) {
 756                         FoundCharset = NewStrBuf();
 757                 }
 758                 Stat.nummsgs = load_msg_ptrs(cmd, p,
 759                                              FoundCharset,
 760                                              &Stat,
 761                                              &ViewSpecific,
 762                                              ViewMsg->LHParse,
 763                                              ViewMsg->FetchMessageList,
 764                                              ViewMsg->MessageFieldList,
 765                                              ViewMsg->HeaderCount);
 766                 FreeStrBuf(&FoundCharset);
 767         }
 768
 769         if (Stat.sortit) {
 770                 CompareFunc SortIt;
 771                 StackContext(NULL, &SubTP, NULL, CTX_MAILSUM, 0, NULL);
 772                 {
 773                         SortIt =  RetrieveSort(&SubTP,
 774                                                NULL, 0,
 775                                                HKEY("date"),
 776                                                Stat.defaultsortorder);
 777                 }
 778                 UnStackContext(&SubTP);
 779                 if (SortIt != NULL)
 780                         SortByPayload(WC->summ, SortIt);
 781         }
 782         if (Stat.startmsg < 0) {
 783                 Stat.startmsg =  0;
 784         }
 785
 786         if (Stat.load_seen) Stat.numNewmsgs = load_seen_flags();
 787
 788         /*
 789          * Print any inforation above the message list...
 790          */
 791         if (ViewMsg->PrintViewHeader != NULL)
 792                 ViewMsg->PrintViewHeader(&Stat, &ViewSpecific);
 793
 794         WC->startmsg =  Stat.startmsg;
 795         WC->maxmsgs = Stat.maxmsgs;
 796         WC->num_displayed = 0;
 797
 798         /* Put some helpful data in vars for mailsummary_json */
 799         {
 800                 StrBuf *Foo;
 801
 802                 Foo = NewStrBuf ();
 803                 StrBufPrintf(Foo, "%ld", Stat.nummsgs);
 804                 PutBstr(HKEY("__READLOOP:TOTALMSGS"), NewStrBufDup(Foo)); /* keep Foo! */
 805
 806                 StrBufPrintf(Foo, "%ld", Stat.numNewmsgs);
 807                 PutBstr(HKEY("__READLOOP:NEWMSGS"), NewStrBufDup(Foo)); /* keep Foo! */
 808
 809                 StrBufPrintf(Foo, "%ld", Stat.startmsg);
 810                 PutBstr(HKEY("__READLOOP:STARTMSG"), Foo); /* store Foo elsewhere, descope it here. */
 811         }
 812
 813         /*
 814          * iterate over each message. if we need to load an attachment, do it here.
 815          */
 816
 817         if ((ViewMsg->LoadMsgFromServer != NULL) && (!IsEmptyStr(cmd))) {
 818                 at = GetNewHashPos(WC->summ, 0);
 819                 Stat.num_displayed = i = 0;
 820                 while ( GetNextHashPos(WC->summ, at, &HKLen, &HashKey, &vMsg)) {
 821                         Msg = (message_summary*) vMsg;
 822                         if ((Msg->msgnum >= Stat.startmsg) && (Stat.num_displayed <= Stat.maxmsgs)) {
 823                                 ViewMsg->LoadMsgFromServer(&Stat,
 824                                                            &ViewSpecific,
 825                                                            Msg,
 826                                                            (Msg->Flags & MSGFLAG_READ) != 0,
 827                                                            i);
 828                         }
 829                         i++;
 830                 }
 831                 DeleteHashPos(&at);
 832         }
 833
 834         /*
 835          * Done iterating the message list. now tasks we want to do after.
 836          */
 837         if (ViewMsg->RenderView_or_Tail != NULL)
 838                 ViewMsg->RenderView_or_Tail(&Stat, &ViewSpecific, oper);
 839
 840         if (ViewMsg->ViewCleanup != NULL)
 841                 ViewMsg->ViewCleanup(&ViewSpecific);
 842
 843         WC->startmsg = 0;
 844         WC->maxmsgs = 0;
 845         if (WC->summ != NULL) {
 846                 DeleteHash(&WC->summ);
 847         }
 848 }
 849
 850
 851 // Back end for post_message()
 852 // This is where the actual message gets transmitted to the server.
 853 void post_mime_to_server(void) {
 854         char top_boundary[SIZ];
 855         char alt_boundary[SIZ];
 856         int is_multipart = 0;
 857         static int seq = 0;
 858         wc_mime_attachment *att;
 859         char *encoded;
 860         size_t encoded_length;
 861         size_t encoded_strlen;
 862         char *txtmail = NULL;
 863         int include_text_alt = 0;       /* Set to nonzero to include multipart/alternative text/plain */
 864
 865         sprintf(top_boundary, "Citadel--Multipart--%s--%04x--%04x",
 866                 ChrPtr(WC->serv_info->serv_fqdn),
 867                 getpid(),
 868                 ++seq
 869         );
 870         sprintf(alt_boundary, "Citadel--Multipart--%s--%04x--%04x",
 871                 ChrPtr(WC->serv_info->serv_fqdn),
 872                 getpid(),
 873                 ++seq
 874         );
 875
 876         /* RFC2045 requires this, and some clients look for it... */
 877         serv_puts("MIME-Version: 1.0");
 878         serv_puts("X-Mailer: " PACKAGE_STRING);
 879
 880         /* If there are attachments, we have to do multipart/mixed */
 881         syslog(LOG_DEBUG, "This message will have %d attachments", GetCount(WC->attachments));
 882         if (GetCount(WC->attachments) > 0) {
 883                 is_multipart = 1;
 884         }
 885
 886         /* Only do multipart/alternative for mailboxes.  BBS and Wiki rooms don't need it. */
 887         if ((WC->CurRoom.view == VIEW_MAILBOX) || (WC->CurRoom.view == VIEW_JSON_LIST)) {
 888                 include_text_alt = 1;
 889         }
 890
 891         if (is_multipart) {
 892                 /* Remember, serv_printf() appends an extra newline */
 893                 serv_printf("Content-type: multipart/mixed; boundary=\"%s\"\n", top_boundary);
 894                 serv_printf("This is a multipart message in MIME format.\n");
 895                 serv_printf("--%s", top_boundary);
 896         }
 897
 898         /* Remember, serv_printf() appends an extra newline */
 899         if (include_text_alt) {
 900                 StrBuf *Buf;
 901                 serv_printf("Content-type: multipart/alternative; boundary=\"%s\"\n", alt_boundary);
 902                 serv_printf("This is a multipart message in MIME format.\n");
 903                 serv_printf("--%s", alt_boundary);
 904
 905                 serv_puts("Content-type: text/plain; charset=utf-8");
 906                 serv_puts("Content-Transfer-Encoding: quoted-printable");
 907                 serv_puts("");
 908                 txtmail = html_to_ascii(bstr("msgtext"), 0, 80, 0);
 909                 Buf = NewStrBufPlain(txtmail, -1);
 910                 free(txtmail);
 911
 912                 text_to_server_qp(Buf);     /* Transmit message in quoted-printable encoding */
 913                 FreeStrBuf(&Buf);
 914                 serv_printf("\n--%s", alt_boundary);
 915         }
 916
 917         serv_puts("Content-type: text/html; charset=utf-8");
 918         serv_puts("Content-Transfer-Encoding: quoted-printable");
 919         serv_puts("");
 920         serv_puts("<html><body>\r\n");
 921         if (havebstr("msgtext")) {
 922                 text_to_server_qp(sbstr("msgtext"));    /* Transmit message in quoted-printable encoding */
 923         }
 924         serv_puts("</body></html>\r\n");
 925
 926         if (include_text_alt) {
 927                 serv_printf("--%s--", alt_boundary);
 928         }
 929
 930         if (is_multipart) {
 931                 long len;
 932                 const char *Key;
 933                 void *vAtt;
 934                 HashPos  *it;
 935
 936                 /* Add in the attachments */
 937                 it = GetNewHashPos(WC->attachments, 0);
 938                 while (GetNextHashPos(WC->attachments, it, &len, &Key, &vAtt)) {
 939                         att = (wc_mime_attachment *)vAtt;
 940                         if (att->length == 0)
 941                                 continue;
 942
 943                         encoded_length = att->length + (att->length / 2);       // make it 150% of the original size for encoding
 944                         encoded = malloc(encoded_length);
 945                         if (!encoded) {
 946                                 syslog(LOG_ERR, "malloc() error");
 947                                 break;
 948                         }
 949                         syslog(LOG_DEBUG, "Attachment: raw len %d", StrLength(att->Data));
 950                         encoded_strlen = CtdlEncodeBase64(encoded, ChrPtr(att->Data), StrLength(att->Data), BASE64_YES_LINEBREAKS);
 951                         syslog(LOG_DEBUG, "Attachment: encoded len %d", encoded_strlen);
 952
 953                         serv_printf("--%s", top_boundary);
 954                         serv_printf("Content-type: %s", ChrPtr(att->ContentType));
 955                         serv_printf("Content-disposition: attachment; filename=\"%s\"", ChrPtr(att->FileName));
 956                         serv_puts("Content-transfer-encoding: base64");
 957                         serv_puts("");
 958                         serv_write(encoded, encoded_strlen);
 959                         serv_puts("");
 960                         serv_puts("");
 961                         free(encoded);
 962                 }
 963                 serv_printf("--%s--", top_boundary);
 964                 DeleteHashPos(&it);
 965         }
 966
 967         serv_puts("000");
 968 }
 969
 970
 971 /*
 972  * Post message (or don't post message)
 973  *
 974  * Note regarding the "dont_post" variable:
 975  * A random value (actually, it's just a timestamp) is inserted as a hidden
 976  * field called "postseq" when the display_enter page is generated.  This
 977  * value is checked when posting, using the static variable dont_post.  If a
 978  * user attempts to post twice using the same dont_post value, the message is
 979  * discarded.  This prevents the accidental double-saving of the same message
 980  * if the user happens to click the browser "back" button.
 981  */
 982 void post_message(void) {
 983         StrBuf *UserName;
 984         StrBuf *EmailAddress;
 985         StrBuf *EncBuf;
 986         char buf[1024];
 987         StrBuf *encoded_subject = NULL;
 988         static long dont_post = (-1L);
 989         int is_anonymous = 0;
 990         const StrBuf *display_name = NULL;
 991         StrBuf *Buf;
 992
 993         if (havebstr("force_room")) {
 994                 gotoroom(sbstr("force_room"));
 995         }
 996
 997         if (havebstr("display_name")) {
 998                 display_name = sbstr("display_name");
 999                 if (!strcmp(ChrPtr(display_name), "__ANONYMOUS__")) {
1000                         display_name = NULL;
1001                         is_anonymous = 1;
1002                 }
1003         }
1004
1005         if (!strcasecmp(bstr("submit_action"), "cancel")) {
1006                 AppendImportantMessage(_("Cancelled.  Message was not posted."), -1);
1007         } else if (lbstr("postseq") == dont_post) {
1008                 AppendImportantMessage(
1009                         _("Automatically cancelled because you have already "
1010                           "saved this message."), -1);
1011         } else {
1012                 const char CMD[] = "ENT0 1|%s|%d|4|%s|%s||%s|%s|%s|%s|%s";
1013                 StrBuf *Recp = NULL;
1014                 StrBuf *Cc = NULL;
1015                 StrBuf *Bcc = NULL;
1016                 StrBuf *wikipage = NULL;
1017                 const StrBuf *my_email_addr = NULL;
1018                 StrBuf *CmdBuf = NULL;
1019                 StrBuf *references = NULL;
1020                 int saving_to_drafts = 0;
1021                 long HeaderLen = 0;
1022
1023                 saving_to_drafts = !strcasecmp(bstr("submit_action"), "draft");
1024                 Buf = NewStrBuf();
1025
1026                 if (saving_to_drafts) {
1027                         /* temporarily change to the drafts room */
1028                         serv_puts("GOTO _DRAFTS_");
1029                         StrBuf_ServGetln(Buf);
1030                         if (GetServerStatusMsg(Buf, NULL, 1, 2) != 2) {
1031                                 /* You probably don't even have a dumb Drafts folder */
1032                                 syslog(LOG_DEBUG, "%s:%d: server save to drafts error: %s\n", __FILE__, __LINE__, ChrPtr(Buf) + 4);
1033                                 AppendImportantMessage(_("Saved to Drafts failed: "), -1);
1034                                 display_enter();
1035                                 FreeStrBuf(&Buf);
1036                                 return;
1037                         }
1038                 }
1039
1040                 if (havebstr("references"))
1041                 {
1042                         const StrBuf *ref = sbstr("references");
1043                         references = NewStrBufDup(ref);
1044                         if (*ChrPtr(references) == '|') {       /* remove leading '|' if present */
1045                                 StrBufCutLeft(references, 1);
1046                         }
1047                         StrBufReplaceChars(references, '|', '!');
1048                 }
1049                 if (havebstr("subject")) {
1050                         const StrBuf *Subj;
1051                         /*
1052                          * make enough room for the encoded string;
1053                          * plus the QP header
1054                          */
1055                         Subj = sbstr("subject");
1056
1057                         StrBufRFC2047encode(&encoded_subject, Subj);
1058                 }
1059                 UserName = NewStrBuf();
1060                 EmailAddress = NewStrBuf();
1061                 EncBuf = NewStrBuf();
1062
1063                 Recp = StrBufSanitizeEmailRecipientVector(sbstr("recp"), UserName, EmailAddress, EncBuf);
1064                 Cc = StrBufSanitizeEmailRecipientVector(sbstr("cc"), UserName, EmailAddress, EncBuf);
1065                 Bcc = StrBufSanitizeEmailRecipientVector(sbstr("bcc"), UserName, EmailAddress, EncBuf);
1066
1067                 FreeStrBuf(&UserName);
1068                 FreeStrBuf(&EmailAddress);
1069                 FreeStrBuf(&EncBuf);
1070
1071                 wikipage = NewStrBufDup(sbstr("page"));
1072                 str_wiki_index(wikipage);
1073                 my_email_addr = sbstr("my_email_addr");
1074
1075                 HeaderLen = StrLength(Recp) +
1076                         StrLength(encoded_subject) +
1077                         StrLength(Cc) +
1078                         StrLength(Bcc) +
1079                         StrLength(wikipage) +
1080                         StrLength(my_email_addr) +
1081                         StrLength(references);
1082                 CmdBuf = NewStrBufPlain(NULL, sizeof (CMD) + HeaderLen);
1083                 StrBufPrintf(CmdBuf,
1084                              CMD,
1085                              saving_to_drafts?"":ChrPtr(Recp),
1086                              is_anonymous,
1087                              ChrPtr(encoded_subject),
1088                              ChrPtr(display_name),
1089                              saving_to_drafts?"":ChrPtr(Cc),
1090                              saving_to_drafts?"":ChrPtr(Bcc),
1091                              ChrPtr(wikipage),
1092                              ChrPtr(my_email_addr),
1093                              ChrPtr(references));
1094                 FreeStrBuf(&references);
1095                 FreeStrBuf(&encoded_subject);
1096                 free(wikipage);
1097
1098                 if ((HeaderLen + StrLength(sbstr("msgtext")) < 10) &&
1099                     (GetCount(WC->attachments) == 0)){
1100                         AppendImportantMessage(_("Refusing to post empty message.\n"), -1);
1101                         FreeStrBuf(&CmdBuf);
1102
1103                 }
1104                 else
1105                 {
1106                         syslog(LOG_DEBUG, "%s\n", ChrPtr(CmdBuf));
1107                         serv_puts(ChrPtr(CmdBuf));
1108                         FreeStrBuf(&CmdBuf);
1109
1110                         StrBuf_ServGetln(Buf);
1111                         if (GetServerStatus(Buf, NULL) == 4) {
1112                                 if (saving_to_drafts) {
1113                                         if (  (havebstr("recp"))
1114                                               || (havebstr("cc"  ))
1115                                               || (havebstr("bcc" )) ) {
1116                                                 /* save recipient headers or room to post to */
1117                                                 serv_printf("To: %s", ChrPtr(Recp));
1118                                                 serv_printf("Cc: %s", ChrPtr(Cc));
1119                                                 serv_printf("Bcc: %s", ChrPtr(Bcc));
1120                                         } else {
1121                                                 serv_printf("X-Citadel-Room: %s", ChrPtr(WC->CurRoom.name));
1122                                         }
1123                                 }
1124                                 post_mime_to_server();
1125                                 if (saving_to_drafts) {
1126                                         AppendImportantMessage(_("Message has been saved to Drafts.\n"), -1);
1127                                         gotoroom(WC->CurRoom.name);
1128                                         fixview();
1129                                         readloop(readnew, eUseDefault);
1130                                         FreeStrBuf(&Buf);
1131                                         return;
1132                                 } else if (  (havebstr("recp"))
1133                                              || (havebstr("cc"  ))
1134                                              || (havebstr("bcc" ))
1135                                         ) {
1136                                         AppendImportantMessage(_("Message has been sent.\n"), -1);
1137                                 }
1138                                 else {
1139                                         AppendImportantMessage(_("Message has been posted.\n"), -1);
1140                                 }
1141                                 dont_post = lbstr("postseq");
1142                         } else {
1143                                 syslog(LOG_DEBUG, "%s:%d: server post error: %s", __FILE__, __LINE__, ChrPtr(Buf) + 4);
1144                                 AppendImportantMessage(ChrPtr(Buf) + 4, StrLength(Buf) - 4);
1145                                 display_enter();
1146                                 if (saving_to_drafts) gotoroom(WC->CurRoom.name);
1147                                 FreeStrBuf(&Recp);
1148                                 FreeStrBuf(&Buf);
1149                                 FreeStrBuf(&Cc);
1150                                 FreeStrBuf(&Bcc);
1151                                 return;
1152                         }
1153                 }
1154                 FreeStrBuf(&Recp);
1155                 FreeStrBuf(&Buf);
1156                 FreeStrBuf(&Cc);
1157                 FreeStrBuf(&Bcc);
1158         }
1159
1160         DeleteHash(&WC->attachments);
1161
1162         /*
1163          *  We may have been supplied with instructions regarding the location
1164          *  to which we must return after posting.  If found, go there.
1165          */
1166         if (havebstr("return_to")) {
1167                 http_redirect(bstr("return_to"));
1168         }
1169         /*
1170          *  If we were editing a page in a wiki room, go to that page now.
1171          */
1172         else if (havebstr("page")) {
1173                 snprintf(buf, sizeof buf, "wiki?page=%s", bstr("page"));
1174                 http_redirect(buf);
1175         }
1176         /*
1177          *  Otherwise, just go to the "read messages" loop.
1178          */
1179         else {
1180                 fixview();
1181                 readloop(readnew, eUseDefault);
1182         }
1183 }
1184
1185
1186 /*
1187  * Client is uploading an attachment
1188  */
1189 void upload_attachment(void) {
1190         const char *pch;
1191         int n;
1192         const char *newn;
1193         long newnlen;
1194         void *v;
1195         wc_mime_attachment *att;
1196         const StrBuf *Tmpl = sbstr("template");
1197         const StrBuf *MimeType = NULL;
1198         const StrBuf *UID;
1199
1200         begin_burst();
1201         syslog(LOG_DEBUG, "upload_attachment()");
1202         if (!Tmpl) {
1203                 wc_printf("upload_attachment()<br>\n");
1204         }
1205
1206         if (WC->upload_length <= 0) {
1207                 syslog(LOG_DEBUG, "ERROR no attachment was uploaded\n");
1208                 if (Tmpl) {
1209                         putlbstr("UPLOAD_ERROR", 1);
1210                         MimeType = DoTemplate(SKEY(Tmpl), NULL, &NoCtx);
1211                 }
1212                 else {
1213                         wc_printf("ERROR no attachment was uploaded<br>\n");
1214                 }
1215                 http_transmit_thing(ChrPtr(MimeType), 0);
1216
1217                 return;
1218         }
1219
1220         syslog(LOG_DEBUG, "Client has uploaded %d bytes", WC->upload_length);
1221         if (Tmpl) {
1222                 putlbstr("UPLOAD_LENGTH", WC->upload_length);
1223         }
1224         else {
1225                 wc_printf("Client is uploading %d bytes<br>\n", WC->upload_length);
1226         }
1227
1228         att = (wc_mime_attachment*)malloc(sizeof(wc_mime_attachment));
1229         if (!att) {
1230                 syslog(LOG_DEBUG, "malloc() error");
1231         }
1232         memset(att, 0, sizeof(wc_mime_attachment ));
1233         att->length = WC->upload_length;
1234         att->ContentType = NewStrBufPlain(WC->upload_content_type, -1);
1235         att->FileName = NewStrBufDup(WC->upload_filename);
1236         UID = sbstr("qquuid");
1237         if (UID) {
1238                 att->PartNum = NewStrBufDup(UID);
1239         }
1240
1241         syslog(LOG_DEBUG, "attachment length: %d", att->length);
1242         syslog(LOG_DEBUG, "att. content type: %s", ChrPtr(att->ContentType));
1243         syslog(LOG_DEBUG, "att upload buffer: %s", ((WC->upload == NULL) ? "null" : "not null"));
1244
1245
1246         if (WC->attachments == NULL) {
1247                 WC->attachments = NewHash(1, Flathash);
1248         }
1249
1250         /* And add it to the list. */
1251         n = 0;
1252         if ((GetCount(WC->attachments) > 0) && GetHashAt(WC->attachments, GetCount(WC->attachments) -1, &newnlen, &newn, &v)) {
1253                 n = *((int*) newn) + 1;
1254         }
1255         Put(WC->attachments, IKEY(n), att, DestroyMime);
1256
1257         /*
1258          * Mozilla sends a simple filename, which is what we want,
1259          * but Satan's Browser sends an entire pathname.  Reduce
1260          * the path to just a filename if we need to.
1261          */
1262         pch = strrchr(ChrPtr(att->FileName), '/');
1263         if (pch != NULL) {
1264                 StrBufCutLeft(att->FileName, pch - ChrPtr(att->FileName) + 1);
1265         }
1266         pch = strrchr(ChrPtr(att->FileName), '\\');
1267         if (pch != NULL) {
1268                 StrBufCutLeft(att->FileName, pch - ChrPtr(att->FileName) + 1);
1269         }
1270
1271         /*
1272          * Transfer control of this memory from the upload struct
1273          * to the attachment struct.
1274          */
1275         att->Data = WC->upload;
1276         WC->upload = NULL;
1277         WC->upload_length = 0;
1278
1279         if (Tmpl) MimeType = DoTemplate(SKEY(Tmpl), NULL, &NoCtx);
1280         http_transmit_thing(ChrPtr(MimeType), 0);
1281 }
1282
1283
1284 /*
1285  * Remove an attachment from the message currently being composed.
1286  *
1287  * Currently we identify the attachment to be removed by its filename.
1288  * There is probably a better way to do this.
1289  */
1290 void remove_attachment(void) {
1291         wc_mime_attachment *att;
1292         void *vAtt;
1293         StrBuf *WhichAttachment;
1294         HashPos *at;
1295         long len;
1296         int found=0;
1297         const char *key;
1298
1299         WhichAttachment = NewStrBufDup(sbstr("which_attachment"));
1300         if (ChrPtr(WhichAttachment)[0] == '/')
1301                 StrBufCutLeft(WhichAttachment, 1);
1302         StrBufUnescape(WhichAttachment, 0);
1303         at = GetNewHashPos(WC->attachments, 0);
1304         do {
1305                 vAtt = NULL;
1306                 GetHashPos(WC->attachments, at, &len, &key, &vAtt);
1307
1308                 att = (wc_mime_attachment*) vAtt;
1309                 if ((att != NULL) &&
1310                     (
1311                             !strcmp(ChrPtr(WhichAttachment), ChrPtr(att->FileName)) ||
1312                     ((att->PartNum != NULL) &&
1313                      !strcmp(ChrPtr(WhichAttachment), ChrPtr(att->PartNum)))
1314                             ))
1315                 {
1316                         DeleteEntryFromHash(WC->attachments, at);
1317                         found=1;
1318                         break;
1319                 }
1320         }
1321         while (NextHashPos(WC->attachments, at));
1322
1323         FreeStrBuf(&WhichAttachment);
1324         wc_printf("remove_attachment(%d) completed\n", found);
1325 }
1326
1327
1328 const char *ReplyToModeStrings [3] = {
1329         "reply",
1330         "replyall",
1331         "forward"
1332 };
1333 typedef enum _eReplyToNodes {
1334         eReply,
1335         eReplyAll,
1336         eForward
1337 }eReplyToNodes;
1338
1339
1340 /*
1341  * display the message entry screen
1342  */
1343 void display_enter(void) {
1344         const char *ReplyingModeStr;
1345         eReplyToNodes ReplyMode = eReply;
1346         StrBuf *Line;
1347         long Result;
1348         int rc;
1349         const StrBuf *display_name = NULL;
1350         int recipient_required = 0;
1351         int subject_required = 0;
1352         int is_anonymous = 0;
1353         int i = 0;
1354         long replying_to;
1355
1356         if (havebstr("force_room")) {
1357                 gotoroom(sbstr("force_room"));
1358         }
1359
1360         display_name = sbstr("display_name");
1361         if (!strcmp(ChrPtr(display_name), "__ANONYMOUS__")) {
1362                 display_name = NULL;
1363                 is_anonymous = 1;
1364         }
1365
1366         /*
1367          * First, do we have permission to enter messages in this room at all?
1368          */
1369         Line = NewStrBuf();
1370         serv_puts("ENT0 0");
1371         StrBuf_ServGetln(Line);
1372         rc = GetServerStatusMsg(Line, &Result, 0, 2);
1373
1374         if (Result == 570) {            /* 570 means that we need a recipient here */
1375                 recipient_required = 1;
1376         }
1377         else if (rc != 2) {             /* Any other error means that we cannot continue */
1378                 rc = GetServerStatusMsg(Line, &Result, 0, 2);
1379                 fixview();
1380                 readloop(readnew, eUseDefault);
1381                 FreeStrBuf(&Line);
1382                 return;
1383         }
1384
1385         /* Is the server strongly recommending that the user enter a message subject? */
1386         if (StrLength(Line) > 4) {
1387                 subject_required = extract_int(ChrPtr(Line) + 4, 1);
1388         }
1389
1390         /*
1391          * Are we perhaps in an address book view?  If so, then an "enter
1392          * message" command really means "add new entry."
1393          */
1394         if (WC->CurRoom.defview == VIEW_ADDRESSBOOK) {
1395                 do_edit_vcard(-1, "", NULL, NULL, "",  ChrPtr(WC->CurRoom.name));
1396                 FreeStrBuf(&Line);
1397                 return;
1398         }
1399
1400         /*
1401          * Are we perhaps in a calendar room?  If so, then an "enter message" command really means "add new calendar item."
1402          */
1403         if (WC->CurRoom.defview == VIEW_CALENDAR) {
1404                 display_edit_event();
1405                 FreeStrBuf(&Line);
1406                 return;
1407         }
1408
1409         /*
1410          * Are we perhaps in a tasks view?  If so, then an "enter
1411          * message" command really means "add new task."
1412          */
1413         if (WC->CurRoom.defview == VIEW_TASKS) {
1414                 display_edit_task();
1415                 FreeStrBuf(&Line);
1416                 return;
1417         }
1418
1419         ReplyingModeStr = bstr("replying_mode");
1420         if (ReplyingModeStr != NULL) {
1421                 for (i = 0; i < 3; i++) {
1422                         if (strcmp(ReplyingModeStr, ReplyToModeStrings[i]) == 0) {
1423                                 ReplyMode = (eReplyToNodes) i;
1424                                 break;
1425                         }
1426                 }
1427         }
1428
1429         /*
1430          * If the "replying_to" variable is set, it refers to a message
1431          * number from which we must extract some header fields...
1432          */
1433         replying_to = lbstr("replying_to");
1434         if (replying_to > 0) {
1435                 long len;
1436                 StrBuf *wefw = NULL;
1437                 StrBuf *msgn = NULL;
1438                 StrBuf *from = NULL;
1439                 StrBuf *rfca = NULL;
1440                 StrBuf *rcpt = NULL;
1441                 StrBuf *cccc = NULL;
1442                 StrBuf *replyto = NULL;
1443                 StrBuf *nvto = NULL;
1444                 int message_originated_locally = 0;
1445                 serv_printf("MSG0 %ld|1", replying_to);
1446
1447                 StrBuf_ServGetln(Line);
1448                 if (GetServerStatusMsg(Line, NULL, 0, 0) == 1)
1449                         while (len = StrBuf_ServGetln(Line), (len >= 0) && ((len != 3) || strcmp(ChrPtr(Line), "000"))) {
1450                                 eMessageField which;
1451                                 if ((StrLength(Line) > 4) && (ChrPtr(Line)[4] == '=') && GetFieldFromMnemonic(&which, ChrPtr(Line))) switch (which) {
1452                                         case eMsgSubject: {
1453                                                 StrBuf *subj = NewStrBuf();
1454                                                 StrBuf *FlatSubject;
1455
1456                                                 if (ReplyMode == eForward) {
1457                                                         if (strncasecmp(ChrPtr(Line) + 5, "Fw:", 3)) {
1458                                                                 StrBufAppendBufPlain(subj, HKEY("Fw: "), 0);
1459                                                         }
1460                                                 }
1461                                                 else {
1462                                                         if (strncasecmp(ChrPtr(Line) + 5, "Re:", 3)) {
1463                                                                 StrBufAppendBufPlain(subj, HKEY("Re: "), 0);
1464                                                         }
1465                                                 }
1466                                                 StrBufAppendBufPlain(subj,
1467                                                                      ChrPtr(Line) + 5,
1468                                                                      StrLength(Line) - 5, 0);
1469                                                 FlatSubject = NewStrBufPlain(NULL, StrLength(subj));
1470                                                 StrBuf_RFC822_to_Utf8(FlatSubject, subj, NULL, NULL);
1471
1472                                                 PutBstr(HKEY("subject"), FlatSubject);
1473                                         }
1474                                                 break;
1475
1476                                         case eIsLocal: {
1477                                                 message_originated_locally = 1;
1478                                                 break;
1479                                         }
1480
1481                                         case eWeferences:
1482                                         {
1483                                                 int rrtok;
1484                                                 int rrlen;
1485
1486                                                 wefw = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1487
1488                                                 /* Trim down excessively long lists of thread references.  We eliminate the
1489                                                  * second one in the list so that the thread root remains intact.
1490                                                  */
1491                                                 rrtok = num_tokens(ChrPtr(wefw), '|');
1492                                                 rrlen = StrLength(wefw);
1493                                                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1494                                                         StrBufRemove_token(wefw, 1, '|');
1495                                                 }
1496                                                 break;
1497                                         }
1498
1499                                         case emessageId:
1500                                                 msgn = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1501                                                 break;
1502
1503                                         case eAuthor: {
1504                                                 StrBuf *FlatFrom;
1505                                                 from = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1506                                                 FlatFrom = NewStrBufPlain(NULL, StrLength(from));
1507                                                 StrBuf_RFC822_to_Utf8(FlatFrom, from, NULL, NULL);
1508                                                 FreeStrBuf(&from);
1509                                                 from = FlatFrom;
1510                                                 for (i=0; i<StrLength(from); ++i) {
1511                                                         if (ChrPtr(from)[i] == ',')
1512                                                                 StrBufPeek(from, NULL, i, ' ');
1513                                                 }
1514                                                 break;
1515                                         }
1516                                         case eRecipient:
1517                                                 rcpt = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1518                                                 break;
1519                                         case eCarbonCopY:
1520                                                 cccc = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1521                                                 break;
1522                                         case eReplyTo:
1523                                                 replyto = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1524                                                 break;
1525                                         case erFc822Addr: {
1526                                                 StrBuf *FlatRFCA;
1527                                                 rfca = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1528                                                 FlatRFCA = NewStrBufPlain(NULL, StrLength(rfca));
1529                                                 StrBuf_RFC822_to_Utf8(FlatRFCA, rfca, NULL, NULL);
1530                                                 FreeStrBuf(&rfca);
1531                                                 rfca = FlatRFCA;
1532                                                 break;
1533                                         }
1534                                         case eenVelopeTo:
1535                                                 nvto = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1536                                                 putbstr("nvto", nvto);
1537                                                 break;
1538                                         case eXclusivID:
1539                                         case eJournal:
1540                                         case eListID:
1541                                         case eMessageText:
1542                                         case eMessagePath:
1543                                         case eSpecialField:
1544                                         case eTimestamp:
1545                                         case eHeaderOnly:
1546                                         case eFormatType:
1547                                         case eMessagePart:
1548                                         case eSubFolder:
1549                                         case eLastHeader:
1550                                                 break;
1551
1552                                         }
1553                         }
1554
1555
1556                 if (StrLength(wefw) + StrLength(msgn) > 0) {
1557                         StrBuf *refs = NewStrBuf();
1558                         if (StrLength(wefw) > 0) {
1559                                 StrBufAppendBuf(refs, wefw, 0);
1560                         }
1561                         if ( (StrLength(wefw) > 0) &&
1562                              (StrLength(msgn) > 0) )
1563                         {
1564                                 StrBufAppendBufPlain(refs, HKEY("|"), 0);
1565                         }
1566                         if (StrLength(msgn) > 0) {
1567                                 StrBufAppendBuf(refs, msgn, 0);
1568                         }
1569                         PutBstr(HKEY("references"), refs);
1570                 }
1571
1572                 /*
1573                  * If this is a Reply or a ReplyAll, copy the sender's email into the To: field
1574                  */
1575                 if ((ReplyMode == eReply) || (ReplyMode == eReplyAll)) {
1576                         StrBuf *to_rcpt;
1577
1578                         if ((StrLength(replyto) > 0) && (ReplyMode == eReplyAll)) {
1579                                 to_rcpt = NewStrBuf();
1580                                 StrBufAppendBuf(to_rcpt, replyto, 0);
1581                         }
1582
1583                         else if ( (StrLength(rfca) > 0) && (message_originated_locally == 0) ) {
1584                                 to_rcpt = NewStrBuf();
1585                                 StrBufAppendBuf(to_rcpt, from, 0);
1586                                 StrBufAppendBufPlain(to_rcpt, HKEY(" <"), 0);
1587                                 StrBufAppendBuf(to_rcpt, rfca, 0);
1588                                 StrBufAppendBufPlain(to_rcpt, HKEY(">"), 0);
1589                         }
1590
1591                         else {
1592                                 to_rcpt =  from;
1593                                 from = NULL;
1594                         }
1595                         PutBstr(HKEY("recp"), to_rcpt);
1596                 }
1597
1598                 /*
1599                  * Only if this is a ReplyAll, copy all recipients into the Cc: field
1600                  */
1601                 if (ReplyMode == eReplyAll) {
1602                         StrBuf *cc_rcpt = rcpt;
1603                         rcpt = NULL;
1604                         if ((StrLength(cccc) > 0) && (StrLength(replyto) == 0)) {
1605                                 if (cc_rcpt != NULL)  {
1606                                         StrBufAppendPrintf(cc_rcpt, ", ");
1607                                         StrBufAppendBuf(cc_rcpt, cccc, 0);
1608                                 }
1609                                 else {
1610                                         cc_rcpt = cccc;
1611                                         cccc = NULL;
1612                                 }
1613                         }
1614                         if (cc_rcpt != NULL) {
1615                                 PutBstr(HKEY("cc"), cc_rcpt);
1616                         }
1617                 }
1618
1619                 // We might not need these logs anymore.
1620                 syslog(LOG_DEBUG, "wefw = %s", ChrPtr(wefw));
1621                 syslog(LOG_DEBUG, "msgn = %s", ChrPtr(msgn));
1622                 syslog(LOG_DEBUG, "from = %s", ChrPtr(from));
1623                 syslog(LOG_DEBUG, "rfca = %s", ChrPtr(rfca));
1624                 syslog(LOG_DEBUG, "rcpt = %s", ChrPtr(rcpt));
1625                 syslog(LOG_DEBUG, "cccc = %s", ChrPtr(cccc));
1626                 syslog(LOG_DEBUG, "replyto = %s", ChrPtr(replyto));
1627                 syslog(LOG_DEBUG, "nvto = %s", ChrPtr(nvto));
1628                 syslog(LOG_DEBUG, "local = %d" , message_originated_locally);
1629
1630                 FreeStrBuf(&wefw);
1631                 FreeStrBuf(&msgn);
1632                 FreeStrBuf(&from);
1633                 FreeStrBuf(&rfca);
1634                 FreeStrBuf(&rcpt);
1635                 FreeStrBuf(&cccc);
1636         }
1637         FreeStrBuf(&Line);
1638
1639         /*
1640          * Otherwise proceed normally.
1641          * Do a custom room banner with no navbar...
1642          */
1643         if (recipient_required) {
1644                 const StrBuf *Recp = NULL;
1645                 const StrBuf *Cc = NULL;
1646                 const StrBuf *Bcc = NULL;
1647                 StrBuf *wikipage = NULL;
1648                 StrBuf *CmdBuf = NULL;
1649                 const char CMD[] = "ENT0 0|%s|%d|0||%s||%s|%s|%s";
1650
1651                 Recp = sbstr("recp");
1652                 Cc = sbstr("cc");
1653                 Bcc = sbstr("bcc");
1654                 wikipage = NewStrBufDup(sbstr("page"));
1655                 str_wiki_index(wikipage);
1656
1657                 CmdBuf = NewStrBufPlain(NULL,
1658                                         sizeof (CMD) +
1659                                         StrLength(Recp) +
1660                                         StrLength(display_name) +
1661                                         StrLength(Cc) +
1662                                         StrLength(Bcc) +
1663                                         StrLength(wikipage));
1664
1665                 StrBufPrintf(CmdBuf,
1666                              CMD,
1667                              ChrPtr(Recp),
1668                              is_anonymous,
1669                              ChrPtr(display_name),
1670                              ChrPtr(Cc),
1671                              ChrPtr(Bcc),
1672                              ChrPtr(wikipage)
1673                 );
1674                 serv_puts(ChrPtr(CmdBuf));
1675                 StrBuf_ServGetln(CmdBuf);
1676                 free(wikipage);
1677
1678                 rc = GetServerStatusMsg(CmdBuf, &Result, 0, 0);
1679
1680                 if (    (Result == 570)         /* invalid or missing recipient(s) */
1681                         || (Result == 550)      /* higher access required to send Internet mail */
1682                 ) {
1683                         /* These errors will have been displayed and are excusable */
1684                 }
1685                 else if (rc != 2) {     /* Any other error means that we cannot continue */
1686                         AppendImportantMessage(ChrPtr(CmdBuf) + 4, StrLength(CmdBuf) - 4);
1687                         FreeStrBuf(&CmdBuf);
1688                         fixview();
1689                         readloop(readnew, eUseDefault);
1690                         return;
1691                 }
1692                 FreeStrBuf(&CmdBuf);
1693         }
1694         if (recipient_required)
1695                 PutBstr(HKEY("__RCPTREQUIRED"), NewStrBufPlain(HKEY("1")));
1696         if (recipient_required || subject_required)
1697                 PutBstr(HKEY("__SUBJREQUIRED"), NewStrBufPlain(HKEY("1")));
1698
1699         begin_burst();
1700         output_headers(1, 0, 0, 0, 1, 0);
1701         DoTemplate(HKEY("edit_message"), NULL, &NoCtx);
1702         end_burst();
1703
1704         return;
1705 }
1706
1707
1708 /*
1709  * delete a message
1710  */
1711 void delete_msg(void) {
1712         long msgid;
1713         StrBuf *Line;
1714
1715         msgid = lbstr("msgid");
1716         Line = NewStrBuf();
1717         if ((WC->CurRoom.RAFlags & UA_ISTRASH) != 0) {  /* Delete from Trash is a real delete */
1718                 serv_printf("DELE %ld", msgid);
1719         }
1720         else {                  /* Otherwise move it to Trash */
1721                 serv_printf("MOVE %ld|_TRASH_|0", msgid);
1722         }
1723
1724         StrBuf_ServGetln(Line);
1725         GetServerStatusMsg(Line, NULL, 1, 0);
1726
1727         fixview();
1728
1729         readloop(readnew, eUseDefault);
1730 }
1731
1732
1733 /*
1734  * move a message to another room
1735  */
1736 void move_msg(void) {
1737         long msgid;
1738
1739         msgid = lbstr("msgid");
1740
1741         if (havebstr("move_button")) {
1742                 StrBuf *Line;
1743                 serv_printf("MOVE %ld|%s", msgid, bstr("target_room"));
1744                 Line = NewStrBuf();
1745                 StrBuf_ServGetln(Line);
1746                 GetServerStatusMsg(Line, NULL, 1, 0);
1747                 FreeStrBuf(&Line);
1748         } else {
1749                 AppendImportantMessage(_("The message was not moved."), -1);
1750         }
1751
1752         fixview();
1753         readloop(readnew, eUseDefault);
1754 }
1755
1756
1757 /*
1758  * Generic function to output an arbitrary MIME attachment from
1759  * message being composed
1760  *
1761  * partnum              The MIME part to be output
1762  * filename             Fake filename to give
1763  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
1764  */
1765 void postpart(StrBuf *partnum, StrBuf *filename, int force_download) {
1766         void *vPart;
1767         StrBuf *content_type;
1768         wc_mime_attachment *part;
1769         int i;
1770
1771         i = StrToi(partnum);
1772         if (GetHash(WC->attachments, IKEY(i), &vPart) &&
1773             (vPart != NULL)) {
1774                 part = (wc_mime_attachment*) vPart;
1775                 if (force_download) {
1776                         content_type = NewStrBufPlain(HKEY("application/octet-stream"));
1777                 }
1778                 else {
1779                         content_type = NewStrBufDup(part->ContentType);
1780                 }
1781                 StrBufAppendBuf(WC->WBuf, part->Data, 0);
1782                 http_transmit_thing(ChrPtr(content_type), 0);
1783         } else {
1784                 hprintf("HTTP/1.1 404 %s\n", ChrPtr(partnum));
1785                 output_headers(0, 0, 0, 0, 0, 0);
1786                 hprintf("Content-Type: text/plain\r\n");
1787                 begin_burst();
1788                 wc_printf(_("An error occurred while retrieving this part: %s/%s\n"),
1789                         ChrPtr(partnum), ChrPtr(filename));
1790                 end_burst();
1791         }
1792         FreeStrBuf(&content_type);
1793 }
1794
1795
1796 // Generic function to output an arbitrary MIME part from an arbitrary
1797 // message number on the server.
1798 //
1799 // msgnum               message number on the citadel server
1800 // partnum              MIME part number to be output
1801 // force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
1802
1803 void view_or_download_mimepart(int force_download) {
1804         long msgnum;
1805         off_t bytes;
1806         StrBuf *Buf;
1807         StrBuf *ContentType;
1808         StrBuf *PartNum;
1809
1810         PartNum = NewStrBuf();
1811
1812         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
1813         StrBufExtract_token(PartNum, WC->Hdr->HR.ReqLine, 1, '/');
1814
1815         Buf = NewStrBuf();
1816         serv_printf("DLAT %ld|%s", msgnum, ChrPtr(PartNum));    // DLAT will return: 6XX length|-1|filename|cbtype|cbcharset
1817         StrBuf_ServGetln(Buf);
1818         FreeStrBuf(&PartNum);
1819
1820         if (GetServerStatus(Buf, NULL) != 6) {
1821                 FreeStrBuf(&Buf);
1822                 hprintf("HTTP/1.1 500 error\r\n"
1823                         "Pragma: no-cache\r\n"
1824                         "Cache-Control: no-store\r\n"
1825                         "Expires: -1\r\n"
1826                         "Content-Type: text/plain\r\n"
1827                 );
1828                 begin_burst();
1829                 wc_printf(_("An error occurred while retrieving this part: %s\n"), "--");
1830                 return;
1831         }
1832
1833         StrBufCutLeft(Buf, 4);
1834         bytes = StrBufExtract_long(Buf, 0, '|');
1835
1836         if (force_download) {
1837                 ContentType = NewStrBufPlain(HKEY("application/octet-stream"));
1838         }
1839         else {
1840                 ContentType = NewStrBuf();
1841                 StrBufExtract_token(ContentType, Buf, 3, '|');
1842         }
1843
1844         FreeStrBuf(&Buf);
1845         Buf = NewStrBuf();
1846         StrBuf_ServGetBLOBBuffered(Buf, bytes);
1847
1848         WC->WBuf = Buf;
1849         Buf = NULL;
1850         http_transmit_thing(ChrPtr(ContentType), 0);
1851         FreeStrBuf(&ContentType);
1852 }
1853
1854
1855 /*
1856  * Read any MIME part of a message, from the server, into memory.
1857  */
1858 StrBuf *load_mimepart(long msgnum, char *partnum) {
1859         off_t bytes;
1860         StrBuf *Buf;
1861
1862         Buf = NewStrBuf();
1863         serv_printf("DLAT %ld|%s", msgnum, partnum);
1864         StrBuf_ServGetln(Buf);
1865         if (GetServerStatus(Buf, NULL) == 6) {
1866                 StrBufCutLeft(Buf, 4);
1867                 bytes = StrBufExtract_long(Buf, 0, '|');
1868                 FreeStrBuf(&Buf);
1869                 Buf = NewStrBuf();
1870                 StrBuf_ServGetBLOBBuffered(Buf, bytes);
1871                 return(Buf);
1872         }
1873         else {
1874                 FreeStrBuf(&Buf);
1875                 return(NULL);
1876         }
1877 }
1878
1879
1880 /*
1881  * Read any MIME part of a message, from the server, into memory.
1882  */
1883 void MimeLoadData(wc_mime_attachment *Mime) {
1884         StrBuf *Buf;
1885         const char *Ptr;
1886         off_t bytes;
1887
1888         serv_printf("DLAT %ld|%s", Mime->msgnum, ChrPtr(Mime->PartNum));
1889         Buf = NewStrBuf();
1890         StrBuf_ServGetln(Buf);
1891         if (GetServerStatus(Buf, NULL) == 6) {
1892                 Ptr = &(ChrPtr(Buf)[4]);
1893                 bytes = StrBufExtractNext_long(Buf, &Ptr, '|');
1894                 StrBufSkip_NTokenS(Buf, &Ptr, '|', 3);  /* filename, cbtype, mimetype */
1895                 if (Mime->Charset == NULL) Mime->Charset = NewStrBuf();
1896                 StrBufExtract_NextToken(Mime->Charset, Buf, &Ptr, '|');
1897
1898                 if (Mime->Data == NULL) {
1899                         Mime->Data = NewStrBufPlain(NULL, bytes);
1900                 }
1901                 StrBuf_ServGetBLOBBuffered(Mime->Data, bytes);
1902         }
1903         else {
1904                 FlushStrBuf(Mime->Data);
1905         }
1906         FreeStrBuf(&Buf);
1907 }
1908
1909
1910 void view_mimepart(void) {
1911         view_or_download_mimepart(0);
1912 }
1913
1914
1915 void download_mimepart(void) {
1916         view_or_download_mimepart(1);
1917 }
1918
1919
1920 void view_postpart(void) {
1921         StrBuf *filename = NewStrBuf();
1922         StrBuf *partnum = NewStrBuf();
1923
1924         StrBufExtract_token(partnum, WC->Hdr->HR.ReqLine, 0, '/');
1925         StrBufExtract_token(filename, WC->Hdr->HR.ReqLine, 1, '/');
1926
1927         postpart(partnum, filename, 0);
1928
1929         FreeStrBuf(&filename);
1930         FreeStrBuf(&partnum);
1931 }
1932
1933
1934 void download_postpart(void) {
1935         StrBuf *filename = NewStrBuf();
1936         StrBuf *partnum = NewStrBuf();
1937
1938         StrBufExtract_token(partnum, WC->Hdr->HR.ReqLine, 0, '/');
1939         StrBufExtract_token(filename, WC->Hdr->HR.ReqLine, 1, '/');
1940
1941         postpart(partnum, filename, 1);
1942
1943         FreeStrBuf(&filename);
1944         FreeStrBuf(&partnum);
1945 }
1946
1947
1948 void show_num_attachments(void) {
1949         wc_printf("%d", GetCount(WC->attachments));
1950 }
1951
1952
1953 void h_readnew(void) { readloop(readnew, eUseDefault);}
1954 void h_readold(void) { readloop(readold, eUseDefault);}
1955 void h_readfwd(void) { readloop(readfwd, eUseDefault);}
1956 void h_headers(void) { readloop(headers, eUseDefault);}
1957 void h_do_search(void) { readloop(do_search, eUseDefault);}
1958 void h_readgt(void) { readloop(readgt, eUseDefault);}
1959 void h_readlt(void) { readloop(readlt, eUseDefault);}
1960
1961
1962 /* Output message list in JSON format */
1963 void jsonMessageList(void) {
1964         StrBuf *View = NewStrBuf();
1965         const StrBuf *room = sbstr("room");
1966         long oper = (havebstr("query")) ? do_search : readnew;
1967         StrBufPrintf(View, "%d", VIEW_JSON_LIST);
1968         putbstr("view", View);;
1969         gotoroom(room);
1970         readloop(oper, eUseDefault);
1971 }
1972
1973
1974 void FreeReadLoopHandlerSet(void *v) {
1975         RoomRenderer *Handler = (RoomRenderer *) v;
1976         FreeStrBuf(&Handler->FetchMessageList);
1977         if (Handler->MessageFieldList != NULL) {
1978                 free(Handler->MessageFieldList);
1979         }
1980         free(Handler);
1981 }
1982
1983
1984 void RegisterReadLoopHandlerset(
1985         int RoomType,
1986         GetParamsGetServerCall_func GetParamsGetServerCall,
1987         PrintViewHeader_func PrintPageHeader,
1988         PrintViewHeader_func PrintViewHeader,
1989         load_msg_ptrs_detailheaders LH,
1990         LoadMsgFromServer_func LoadMsgFromServer,
1991         RenderView_or_Tail_func RenderView_or_Tail,
1992         View_Cleanup_func ViewCleanup,
1993         const char **browseListFields
1994         )
1995 {
1996         long count = 0;
1997         long i = 0;
1998         RoomRenderer *Handler;
1999
2000         Handler = (RoomRenderer*) malloc(sizeof(RoomRenderer));
2001
2002         Handler->RoomType = RoomType;
2003         Handler->GetParamsGetServerCall = GetParamsGetServerCall;
2004         Handler->PrintPageHeader = PrintPageHeader;
2005         Handler->PrintViewHeader = PrintViewHeader;
2006         Handler->LoadMsgFromServer = LoadMsgFromServer;
2007         Handler->RenderView_or_Tail = RenderView_or_Tail;
2008         Handler->ViewCleanup = ViewCleanup;
2009         Handler->LHParse = LH;
2010
2011         if (browseListFields != NULL) {
2012                 while (browseListFields[count] != NULL) {
2013                         count ++;
2014                 }
2015                 Handler->HeaderCount = count;
2016                 Handler->MessageFieldList = (eMessageField*) malloc(sizeof(eMessageField) * count);
2017                 Handler->FetchMessageList = NewStrBufPlain(NULL, 5 * count + 4 + 5);
2018                 StrBufPlain(Handler->FetchMessageList, HKEY("time\n"));
2019                 for (i = 0; i < count; i++) {
2020                         if (!GetFieldFromMnemonic(&Handler->MessageFieldList[i], browseListFields[i])) {
2021                                 fprintf(stderr, "Unknown message header: %s\n", browseListFields[i]);
2022                                 exit(1);
2023                         }
2024                         StrBufAppendBufPlain(Handler->FetchMessageList, browseListFields[i], 4, 0);
2025                         StrBufAppendBufPlain(Handler->FetchMessageList, HKEY("\n"), 0);
2026                 }
2027                 StrBufAppendBufPlain(Handler->FetchMessageList, HKEY("000"), 0);
2028         }
2029         else {
2030                 Handler->FetchMessageList = NULL;
2031                 Handler->MessageFieldList = NULL;
2032         }
2033
2034         Put(ReadLoopHandler, IKEY(RoomType), Handler, FreeReadLoopHandlerSet);
2035 }
2036
2037 void
2038 InitModule_MSG
2039 (void)
2040 {
2041         RegisterPreference("use_sig",
2042                            _("Attach signature to email messages?"),
2043                            PRF_YESNO,
2044                            NULL);
2045         RegisterPreference("signature", _("Use this signature:"), PRF_QP_STRING, NULL);
2046         RegisterPreference("default_header_charset",
2047                            _("Default character set for email headers:"),
2048                            PRF_STRING,
2049                            NULL);
2050         RegisterPreference("defaultfrom", _("Preferred email address"), PRF_STRING, NULL);
2051         RegisterPreference("defaultname",
2052                            _("Preferred display name for email messages"),
2053                            PRF_STRING,
2054                            NULL);
2055         RegisterPreference("defaulthandle",
2056                            _("Preferred display name for bulletin board posts"),
2057                            PRF_STRING,
2058                            NULL);
2059         RegisterPreference("mailbox",_("Mailbox view mode"), PRF_STRING, NULL);
2060
2061         WebcitAddUrlHandler(HKEY("readnew"), "", 0, h_readnew, ANONYMOUS|NEED_URL);
2062         WebcitAddUrlHandler(HKEY("readold"), "", 0, h_readold, ANONYMOUS|NEED_URL);
2063         WebcitAddUrlHandler(HKEY("readfwd"), "", 0, h_readfwd, ANONYMOUS|NEED_URL);
2064         WebcitAddUrlHandler(HKEY("headers"), "", 0, h_headers, NEED_URL);
2065         WebcitAddUrlHandler(HKEY("readgt"), "", 0, h_readgt, ANONYMOUS|NEED_URL);
2066         WebcitAddUrlHandler(HKEY("readlt"), "", 0, h_readlt, ANONYMOUS|NEED_URL);
2067         WebcitAddUrlHandler(HKEY("do_search"), "", 0, h_do_search, 0);
2068         WebcitAddUrlHandler(HKEY("display_enter"), "", 0, display_enter, 0);
2069         WebcitAddUrlHandler(HKEY("post"), "", 0, post_message, PROHIBIT_STARTPAGE);
2070         WebcitAddUrlHandler(HKEY("move_msg"), "", 0, move_msg, PROHIBIT_STARTPAGE);
2071         WebcitAddUrlHandler(HKEY("delete_msg"), "", 0, delete_msg, PROHIBIT_STARTPAGE);
2072         WebcitAddUrlHandler(HKEY("msg"), "", 0, embed_message, NEED_URL);
2073         WebcitAddUrlHandler(HKEY("message"), "", 0, handle_one_message, NEED_URL|XHTTP_COMMANDS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
2074         WebcitAddUrlHandler(HKEY("printmsg"), "", 0, print_message, NEED_URL);
2075         WebcitAddUrlHandler(HKEY("msgheaders"), "", 0, display_headers, NEED_URL);
2076
2077         WebcitAddUrlHandler(HKEY("mimepart"), "", 0, view_mimepart, NEED_URL);
2078         WebcitAddUrlHandler(HKEY("mimepart_download"), "", 0, download_mimepart, NEED_URL);
2079         WebcitAddUrlHandler(HKEY("postpart"), "", 0, view_postpart, NEED_URL|PROHIBIT_STARTPAGE);
2080         WebcitAddUrlHandler(HKEY("postpart_download"), "", 0, download_postpart, NEED_URL|PROHIBIT_STARTPAGE);
2081         WebcitAddUrlHandler(HKEY("upload_attachment"), "", 0, upload_attachment, AJAX);
2082         WebcitAddUrlHandler(HKEY("remove_attachment"), "", 0, remove_attachment, AJAX);
2083         WebcitAddUrlHandler(HKEY("show_num_attachments"), "", 0, show_num_attachments, AJAX);
2084
2085         /* json */
2086         WebcitAddUrlHandler(HKEY("roommsgs"), "", 0, jsonMessageList,0);
2087 }
2088
2089 void
2090 SessionDetachModule_MSG
2091 (wcsession *sess)
2092 {
2093         DeleteHash(&sess->summ);
2094 }