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 *MsgHeaderHandler = NULL;
  21 HashList *MsgEvaluators = NULL;
  22 HashList *MimeRenderHandler = NULL;
  23 HashList *ReadLoopHandler = NULL;
  24 int dbg_analyze_msg = 0;
  25
  26 #define SUBJ_COL_WIDTH_PCT              50      /* Mailbox view column width */
  27 #define SENDER_COL_WIDTH_PCT            30      /* Mailbox view column width */
  28 #define DATE_PLUS_BUTTONS_WIDTH_PCT     20      /* Mailbox view column width */
  29
  30 void jsonMessageListHdr(void);
  31
  32 void display_enter(void);
  33
  34 typedef void (*MsgPartEvaluatorFunc)(message_summary *Sum, StrBuf *Buf);
  35
  36 typedef struct _MsgPartEvaluatorStruct {
  37         MsgPartEvaluatorFunc f;
  38 } MsgPartEvaluatorStruct;
  39
  40 void fixview()
  41 {
  42         /* workaround for json listview; its not useable directly */
  43         if (WC->CurRoom.view == VIEW_JSON_LIST) {
  44                 StrBuf *View = NewStrBuf();
  45                 StrBufPrintf(View, "%d", VIEW_MAILBOX);
  46                 putbstr("view", View);;
  47         }
  48 }
  49 int load_message(message_summary *Msg,
  50                  StrBuf *FoundCharset,
  51                  StrBuf **Error)
  52 {
  53         StrBuf *Buf;
  54         StrBuf *HdrToken;
  55         headereval *Hdr;
  56         void *vHdr;
  57         char buf[SIZ];
  58         int Done = 0;
  59         int state=0;
  60
  61         Buf = NewStrBuf();
  62         if (Msg->PartNum != NULL) {
  63                 serv_printf("MSG4 %ld|%s", Msg->msgnum, ChrPtr(Msg->PartNum));
  64         }
  65         else {
  66                 serv_printf("MSG4 %ld", Msg->msgnum);
  67         }
  68
  69         StrBuf_ServGetln(Buf);
  70         if (GetServerStatus(Buf, NULL) != 1) {
  71                 *Error = NewStrBuf();
  72                 StrBufAppendPrintf(*Error, "<strong>");
  73                 StrBufAppendPrintf(*Error, _("ERROR:"));
  74                 StrBufAppendPrintf(*Error, "</strong> %s<br>\n", &buf[4]);
  75                 FreeStrBuf(&Buf);
  76                 return 0;
  77         }
  78
  79         /* begin everythingamundo table */
  80         HdrToken = NewStrBuf();
  81         while (!Done && StrBuf_ServGetln(Buf)>=0) {
  82                 if ( (StrLength(Buf)==3) &&
  83                     !strcmp(ChrPtr(Buf), "000"))
  84                 {
  85                         Done = 1;
  86                         if (state < 2) {
  87                                 if (Msg->MsgBody->Data == NULL)
  88                                         Msg->MsgBody->Data = NewStrBuf();
  89                                 Msg->MsgBody->ContentType = NewStrBufPlain(HKEY("text/html"));
  90                                 StrBufAppendPrintf(Msg->MsgBody->Data, "<div><i>");
  91                                 StrBufAppendPrintf(Msg->MsgBody->Data, _("Empty message"));
  92                                 StrBufAppendPrintf(Msg->MsgBody->Data, "</i><br><br>\n");
  93                                 StrBufAppendPrintf(Msg->MsgBody->Data, "</div>\n");
  94                         }
  95                         break;
  96                 }
  97                 switch (state) {
  98                 case 0:/* Citadel Message Headers */
  99                         if (StrLength(Buf) == 0) {
 100                                 state ++;
 101                                 break;
 102                         }
 103                         StrBufExtract_token(HdrToken, Buf, 0, '=');
 104                         StrBufCutLeft(Buf, StrLength(HdrToken) + 1);
 105
 106                         /* look up one of the examine_* functions to parse the content */
 107                         if (GetHash(MsgHeaderHandler, SKEY(HdrToken), &vHdr) &&
 108                             (vHdr != NULL)) {
 109                                 Hdr = (headereval*)vHdr;
 110                                 Hdr->evaluator(Msg, Buf, FoundCharset);
 111                                 if (Hdr->Type == 1) {
 112                                         state++;
 113                                 }
 114                         }/* TODO:
 115                         else LogError(Target,
 116                                       __FUNCTION__,
 117                                       "don't know how to handle message header[%s]\n",
 118                                       ChrPtr(HdrToken));
 119                          */
 120                         break;
 121                 case 1:/* Message Mime Header */
 122                         if (StrLength(Buf) == 0) {
 123                                 state++;
 124                                 if (Msg->MsgBody->ContentType == NULL)
 125                                         /* end of header or no header? */
 126                                         Msg->MsgBody->ContentType = NewStrBufPlain(HKEY("text/plain"));
 127                                  /* usual end of mime header */
 128                         }
 129                         else
 130                         {
 131                                 StrBufExtract_token(HdrToken, Buf, 0, ':');
 132                                 if (StrLength(HdrToken) > 0) {
 133                                         StrBufCutLeft(Buf, StrLength(HdrToken) + 1);
 134                                         /* the examine*'s know how to do with mime headers too... */
 135                                         if (GetHash(MsgHeaderHandler, SKEY(HdrToken), &vHdr) &&
 136                                             (vHdr != NULL)) {
 137                                                 Hdr = (headereval*)vHdr;
 138                                                 Hdr->evaluator(Msg, Buf, FoundCharset);
 139                                         }
 140                                         break;
 141                                 }
 142                         }
 143                 case 2: /* Message Body */
 144
 145                         if (Msg->MsgBody->size_known > 0) {
 146                                 StrBuf_ServGetBLOBBuffered(Msg->MsgBody->Data, Msg->MsgBody->length);
 147                                 state ++;
 148                                 /*/ todo: check next line, if not 000, append following lines */
 149                         }
 150                         else if (1){
 151                                 if (StrLength(Msg->MsgBody->Data) > 0)
 152                                         StrBufAppendBufPlain(Msg->MsgBody->Data, "\n", 1, 0);
 153                                 StrBufAppendBuf(Msg->MsgBody->Data, Buf, 0);
 154                         }
 155                         break;
 156                 case 3:
 157                         StrBufAppendBuf(Msg->MsgBody->Data, Buf, 0);
 158                         break;
 159                 }
 160         }
 161
 162         if (Msg->AllAttach == NULL)
 163                 Msg->AllAttach = NewHash(1,NULL);
 164         /* now we put the body mimepart we read above into the mimelist */
 165         Put(Msg->AllAttach, SKEY(Msg->MsgBody->PartNum), Msg->MsgBody, DestroyMime);
 166
 167         FreeStrBuf(&Buf);
 168         FreeStrBuf(&HdrToken);
 169         return 1;
 170 }
 171
 172
 173
 174 /*
 175  * I wanna SEE that message!
 176  *
 177  * msgnum               Message number to display
 178  * printable_view       Nonzero to display a printable view
 179  * section              Optional for encapsulated message/rfc822 submessage
 180  */
 181 int read_message(StrBuf *Target, const char *tmpl, long tmpllen, long msgnum, const StrBuf *PartNum, const StrBuf **OutMime)
 182 {
 183         StrBuf *Buf;
 184         StrBuf *FoundCharset;
 185         HashPos  *it;
 186         void *vMime;
 187         message_summary *Msg = NULL;
 188         void *vHdr;
 189         long len;
 190         const char *Key;
 191         WCTemplputParams SubTP;
 192         StrBuf *Error = NULL;
 193
 194         Buf = NewStrBuf();
 195         FoundCharset = NewStrBuf();
 196         Msg = (message_summary *)malloc(sizeof(message_summary));
 197         memset(Msg, 0, sizeof(message_summary));
 198         Msg->msgnum = msgnum;
 199         Msg->PartNum = PartNum;
 200         Msg->MsgBody =  (wc_mime_attachment*) malloc(sizeof(wc_mime_attachment));
 201         memset(Msg->MsgBody, 0, sizeof(wc_mime_attachment));
 202         Msg->MsgBody->msgnum = msgnum;
 203
 204         if (!load_message(Msg, FoundCharset, &Error)) {
 205                 StrBufAppendBuf(Target, Error, 0);
 206                 FreeStrBuf(&Error);
 207         }
 208
 209         /* Extract just the content-type (omit attributes such as "charset") */
 210         StrBufExtract_token(Buf, Msg->MsgBody->ContentType, 0, ';');
 211         StrBufTrim(Buf);
 212         StrBufLowerCase(Buf);
 213
 214         /* Locate a renderer capable of converting this MIME part into HTML */
 215         if (GetHash(MimeRenderHandler, SKEY(Buf), &vHdr) &&
 216             (vHdr != NULL)) {
 217                 RenderMimeFuncStruct *Render;
 218                 Render = (RenderMimeFuncStruct*)vHdr;
 219                 Render->f(Msg->MsgBody, NULL, FoundCharset);
 220         }
 221
 222         if (StrLength(Msg->reply_references)> 0) {
 223                 /* Trim down excessively long lists of thread references.  We eliminate the
 224                  * second one in the list so that the thread root remains intact.
 225                  */
 226                 int rrtok = num_tokens(ChrPtr(Msg->reply_references), '|');
 227                 int rrlen = StrLength(Msg->reply_references);
 228                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
 229                         StrBufRemove_token(Msg->reply_references, 1, '|');
 230                 }
 231         }
 232
 233         /* now check if we need to translate some mimeparts, and remove the duplicate */
 234         it = GetNewHashPos(Msg->AllAttach, 0);
 235         while (GetNextHashPos(Msg->AllAttach, it, &len, &Key, &vMime) &&
 236                (vMime != NULL)) {
 237                 wc_mime_attachment *Mime = (wc_mime_attachment*) vMime;
 238                 evaluate_mime_part(Msg, Mime);
 239         }
 240         DeleteHashPos(&it);
 241         memset(&SubTP, 0, sizeof(WCTemplputParams));
 242         SubTP.Filter.ContextType = CTX_MAILSUM;
 243         SubTP.Context = Msg;
 244         *OutMime = DoTemplate(tmpl, tmpllen, Target, &SubTP);
 245
 246         DestroyMessageSummary(Msg);
 247         FreeStrBuf(&FoundCharset);
 248         FreeStrBuf(&Buf);
 249         return 1;
 250 }
 251
 252
 253 long
 254 HttpStatus(long CitadelStatus)
 255 {
 256         long httpstatus = 502;
 257
 258         switch (MAJORCODE(CitadelStatus))
 259         {
 260         case LISTING_FOLLOWS:
 261         case CIT_OK:
 262                 httpstatus = 201;
 263                 break;
 264         case ERROR:
 265                 switch (MINORCODE(CitadelStatus))
 266                 {
 267                 case INTERNAL_ERROR:
 268                         httpstatus = 403;
 269                         break;
 270
 271                 case TOO_BIG:
 272                 case ILLEGAL_VALUE:
 273                 case HIGHER_ACCESS_REQUIRED:
 274                 case MAX_SESSIONS_EXCEEDED:
 275                 case RESOURCE_BUSY:
 276                 case RESOURCE_NOT_OPEN:
 277                 case NOT_HERE:
 278                 case INVALID_FLOOR_OPERATION:
 279                 case FILE_NOT_FOUND:
 280                 case ROOM_NOT_FOUND:
 281                         httpstatus = 409;
 282                         break;
 283
 284                 case MESSAGE_NOT_FOUND:
 285                 case ALREADY_EXISTS:
 286                         httpstatus = 403;
 287                         break;
 288
 289                 case NO_SUCH_SYSTEM:
 290                         httpstatus = 502;
 291                         break;
 292
 293                 default:
 294                 case CMD_NOT_SUPPORTED:
 295                 case PASSWORD_REQUIRED:
 296                 case ALREADY_LOGGED_IN:
 297                 case USERNAME_REQUIRED:
 298                 case NOT_LOGGED_IN:
 299                 case SERVER_SHUTTING_DOWN:
 300                 case NO_SUCH_USER:
 301                 case ASYNC_GEXP:
 302                         httpstatus = 502;
 303                         break;
 304                 }
 305                 break;
 306
 307         default:
 308         case BINARY_FOLLOWS:
 309         case SEND_BINARY:
 310         case START_CHAT_MODE:
 311         case ASYNC_MSG:
 312         case MORE_DATA:
 313         case SEND_LISTING:
 314                 httpstatus = 502; /* aeh... whut? */
 315                 break;
 316         }
 317
 318         return httpstatus;
 319 }
 320
 321 /*
 322  * Unadorned HTML output of an individual message, suitable
 323  * for placing in a hidden iframe, for printing, or whatever
 324  */
 325 void handle_one_message(void)
 326 {
 327         long CitStatus;
 328         int CopyMessage = 0;
 329         const StrBuf *Destination;
 330         void *vLine;
 331         const StrBuf *Mime;
 332         long msgnum = 0L;
 333         wcsession *WCC = WC;
 334         const StrBuf *Tmpl;
 335         StrBuf *CmdBuf = NULL;
 336         const char *pMsg;
 337
 338
 339         pMsg = strchr(ChrPtr(WCC->Hdr->HR.ReqLine), '/');
 340         if (pMsg == NULL) {
 341                 HttpStatus(CitStatus);
 342                 return;
 343         }
 344
 345         msgnum = atol(pMsg + 1);
 346         StrBufCutAt(WCC->Hdr->HR.ReqLine, 0, pMsg);
 347         gotoroom(WCC->Hdr->HR.ReqLine);
 348         switch (WCC->Hdr->HR.eReqType)
 349         {
 350         case eGET:
 351         case ePOST:
 352                 Tmpl = sbstr("template");
 353                 if (StrLength(Tmpl) > 0)
 354                         read_message(WCC->WBuf, SKEY(Tmpl), msgnum, NULL, &Mime);
 355                 else
 356                         read_message(WCC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime);
 357                 http_transmit_thing(ChrPtr(Mime), 0);
 358                 break;
 359         case eDELETE:
 360                 CmdBuf = NewStrBuf ();
 361                 if ((WCC->CurRoom.RAFlags & UA_ISTRASH) != 0) { /* Delete from Trash is a real delete */
 362                         serv_printf("DELE %ld", msgnum);
 363                 }
 364                 else {                  /* Otherwise move it to Trash */
 365                         serv_printf("MOVE %ld|_TRASH_|0", msgnum);
 366                 }
 367                 StrBuf_ServGetln(CmdBuf);
 368                 GetServerStatusMsg(CmdBuf, &CitStatus, 1, 0);
 369                 HttpStatus(CitStatus);
 370                 break;
 371         case eCOPY:
 372                 CopyMessage = 1;
 373         case eMOVE:
 374                 if (GetHash(WCC->Hdr->HTTPHeaders, HKEY("DESTINATION"), &vLine) &&
 375                     (vLine!=NULL)) {
 376                         Destination = (StrBuf*) vLine;
 377                         serv_printf("MOVE %ld|%s|%d", msgnum, ChrPtr(Destination), CopyMessage);
 378                         StrBuf_ServGetln(CmdBuf);
 379                         GetServerStatusMsg(CmdBuf, NULL, 1, 0);
 380                         GetServerStatus(CmdBuf, &CitStatus);
 381                         HttpStatus(CitStatus);
 382                 }
 383                 else
 384                         HttpStatus(500);
 385                 break;
 386         default:
 387                 break;
 388
 389         }
 390 }
 391
 392
 393 /*
 394  * Unadorned HTML output of an individual message, suitable
 395  * for placing in a hidden iframe, for printing, or whatever
 396  */
 397 void embed_message(void) {
 398         const StrBuf *Mime;
 399         long msgnum = 0L;
 400         wcsession *WCC = WC;
 401         const StrBuf *Tmpl;
 402         StrBuf *CmdBuf = NULL;
 403
 404         msgnum = StrBufExtract_long(WCC->Hdr->HR.ReqLine, 0, '/');
 405         if (msgnum <= 0) return;
 406
 407         switch (WCC->Hdr->HR.eReqType)
 408         {
 409         case eGET:
 410         case ePOST:
 411                 Tmpl = sbstr("template");
 412                 if (StrLength(Tmpl) > 0)
 413                         read_message(WCC->WBuf, SKEY(Tmpl), msgnum, NULL, &Mime);
 414                 else
 415                         read_message(WCC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime);
 416                 http_transmit_thing(ChrPtr(Mime), 0);
 417                 break;
 418         case eDELETE:
 419                 CmdBuf = NewStrBuf ();
 420                 if ((WCC->CurRoom.RAFlags & UA_ISTRASH) != 0) { /* Delete from Trash is a real delete */
 421                         serv_printf("DELE %ld", msgnum);
 422                 }
 423                 else {                  /* Otherwise move it to Trash */
 424                         serv_printf("MOVE %ld|_TRASH_|0", msgnum);
 425                 }
 426                 StrBuf_ServGetln(CmdBuf);
 427                 GetServerStatusMsg(CmdBuf, NULL, 1, 0);
 428                 break;
 429         default:
 430                 break;
 431
 432         }
 433 }
 434
 435
 436 /*
 437  * Printable view of a message
 438  */
 439 void print_message(void) {
 440         long msgnum = 0L;
 441         const StrBuf *Mime;
 442
 443         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
 444         output_headers(0, 0, 0, 0, 0, 0);
 445
 446         hprintf("Content-type: text/html\r\n"
 447                 "Server: " PACKAGE_STRING "\r\n"
 448                 "Connection: close\r\n");
 449
 450         begin_burst();
 451
 452         read_message(WC->WBuf, HKEY("view_message_print"), msgnum, NULL, &Mime);
 453
 454         wDumpContent(0);
 455 }
 456
 457 /*
 458  * Display a message's headers
 459  */
 460 void display_headers(void) {
 461         long msgnum = 0L;
 462         char buf[1024];
 463
 464         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
 465         output_headers(0, 0, 0, 0, 0, 0);
 466
 467         hprintf("Content-type: text/plain\r\n"
 468                 "Server: %s\r\n"
 469                 "Connection: close\r\n",
 470                 PACKAGE_STRING);
 471         begin_burst();
 472
 473         serv_printf("MSG2 %ld|3", msgnum);
 474         serv_getln(buf, sizeof buf);
 475         if (buf[0] == '1') {
 476                 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 477                         wc_printf("%s\n", buf);
 478                 }
 479         }
 480
 481         wDumpContent(0);
 482 }
 483
 484
 485 message_summary *ReadOneMessageSummary(StrBuf *RawMessage, const char *DefaultSubject, long MsgNum)
 486 {
 487         void                 *vEval;
 488         MsgPartEvaluatorStruct  *Eval;
 489         message_summary      *Msg;
 490         StrBuf *Buf;
 491         const char *buf;
 492         const char *ebuf;
 493         int nBuf;
 494         long len;
 495
 496         Buf = NewStrBuf();
 497
 498         serv_printf("MSG0 %ld|1", MsgNum);      /* ask for headers only */
 499
 500         StrBuf_ServGetln(Buf);
 501         if (GetServerStatus(Buf, NULL) == 1) {
 502                 FreeStrBuf(&Buf);
 503                 return NULL;
 504         }
 505
 506         Msg = (message_summary*)malloc(sizeof(message_summary));
 507         memset(Msg, 0, sizeof(message_summary));
 508         while (len = StrBuf_ServGetln(Buf),
 509                (len >= 0) &&
 510                ((len != 3)  ||
 511                 strcmp(ChrPtr(Buf), "000")))
 512         {
 513                 buf = ChrPtr(Buf);
 514                 ebuf = strchr(ChrPtr(Buf), '=');
 515                 nBuf = ebuf - buf;
 516                 if (GetHash(MsgEvaluators, buf, nBuf, &vEval) && vEval != NULL) {
 517                         Eval = (MsgPartEvaluatorStruct*) vEval;
 518                         StrBufCutLeft(Buf, nBuf + 1);
 519                         Eval->f(Msg, Buf);
 520                 }
 521                 else syslog(1, "Don't know how to handle Message Headerline [%s]", ChrPtr(Buf));
 522         }
 523         return Msg;
 524 }
 525
 526
 527
 528
 529
 530 /*
 531  * load message pointers from the server for a "read messages" operation
 532  *
 533  * servcmd:             the citadel command to send to the citserver
 534  */
 535 int load_msg_ptrs(const char *servcmd,
 536                   const char *filter,
 537                   SharedMessageStatus *Stat,
 538                   load_msg_ptrs_detailheaders LH)
 539 {
 540         wcsession *WCC = WC;
 541         message_summary *Msg;
 542         StrBuf *Buf, *Buf2;
 543         long len;
 544         int n;
 545         int skipit;
 546         const char *Ptr = NULL;
 547         int StatMajor;
 548
 549         Stat->lowest_found = LONG_MAX;
 550         Stat->highest_found = LONG_MIN;
 551
 552         if (WCC->summ != NULL) {
 553                 DeleteHash(&WCC->summ);
 554         }
 555         WCC->summ = NewHash(1, Flathash);
 556
 557         Buf = NewStrBuf();
 558         serv_puts(servcmd);
 559         StrBuf_ServGetln(Buf);
 560         StatMajor = GetServerStatus(Buf, NULL);
 561         switch (StatMajor) {
 562         case 1:
 563                 break;
 564         case 8:
 565                 if (filter != NULL) {
 566                         serv_puts(filter);
 567                         serv_puts("000");
 568                         break;
 569                 }
 570                 /* fall back to empty filter in case of we were fooled... */
 571                 serv_puts("");
 572                 serv_puts("000");
 573                 break;
 574         default:
 575                 FreeStrBuf(&Buf);
 576                 return (Stat->nummsgs);
 577         }
 578         Buf2 = NewStrBuf();
 579         while (len = StrBuf_ServGetln(Buf),
 580                ((len >= 0) &&
 581                 ((len != 3) ||
 582                  strcmp(ChrPtr(Buf), "000")!= 0)))
 583         {
 584                 if (Stat->nummsgs < Stat->maxload) {
 585                         skipit = 0;
 586                         Ptr = NULL;
 587                         Msg = (message_summary*)malloc(sizeof(message_summary));
 588                         memset(Msg, 0, sizeof(message_summary));
 589
 590                         Msg->msgnum = StrBufExtractNext_long(Buf, &Ptr, '|');
 591                         Msg->date = StrBufExtractNext_long(Buf, &Ptr, '|');
 592
 593                         if (Stat->nummsgs == 0) {
 594                                 if (Msg->msgnum < Stat->lowest_found) {
 595                                         Stat->lowest_found = Msg->msgnum;
 596                                 }
 597                                 if (Msg->msgnum > Stat->highest_found) {
 598                                         Stat->highest_found = Msg->msgnum;
 599                                 }
 600                         }
 601
 602                         if ((Msg->msgnum == 0) && (StrLength(Buf) < 32)) {
 603                                 free(Msg);
 604                                 continue;
 605                         }
 606
 607                         /*
 608                          * as citserver probably gives us messages in forward date sorting
 609                          * nummsgs should be the same order as the message date.
 610                          */
 611                         if (Msg->date == 0) {
 612                                 Msg->date = Stat->nummsgs;
 613                                 if (StrLength(Buf) < 32)
 614                                         skipit = 1;
 615                         }
 616                         if ((!skipit) && (LH != NULL)) {
 617                                 if (!LH(Buf, &Ptr, Msg, Buf2)){
 618                                         free(Msg);
 619                                         continue;
 620                                 }
 621                         }
 622                         n = Msg->msgnum;
 623                         Put(WCC->summ, (const char *)&n, sizeof(n), Msg, DestroyMessageSummary);
 624                 }
 625                 Stat->nummsgs++;
 626         }
 627         FreeStrBuf(&Buf2);
 628         FreeStrBuf(&Buf);
 629         return (Stat->nummsgs);
 630 }
 631
 632
 633
 634 /**
 635  * \brief sets FlagToSet for each of ScanMe that appears in MatchMSet
 636  * \param ScanMe List of BasicMsgStruct to be searched it MatchSet
 637  * \param MatchMSet MSet we want to flag
 638  * \param FlagToSet Flag to set on each BasicMsgStruct->Flags if in MSet
 639  */
 640 void SetFlagsFromMSet(HashList *ScanMe, MSet *MatchMSet, int FlagToSet, int Reverse)
 641 {
 642         const char *HashKey;
 643         long HKLen;
 644         HashPos *at;
 645         void *vMsg;
 646         message_summary *Msg;
 647
 648         at = GetNewHashPos(ScanMe, 0);
 649         while (GetNextHashPos(ScanMe, at, &HKLen, &HashKey, &vMsg)) {
 650                 /* Are you a new message, or an old message? */
 651                 Msg = (message_summary*) vMsg;
 652                 if (Reverse && IsInMSetList(MatchMSet, Msg->msgnum)) {
 653                         Msg->Flags = Msg->Flags | FlagToSet;
 654                 }
 655                 else if (!Reverse && !IsInMSetList(MatchMSet, Msg->msgnum)) {
 656                         Msg->Flags = Msg->Flags | FlagToSet;
 657                 }
 658         }
 659         DeleteHashPos(&at);
 660 }
 661
 662
 663 void load_seen_flags(void)
 664 {
 665         StrBuf *OldMsg;
 666         wcsession *WCC = WC;
 667         MSet *MatchMSet;
 668
 669         OldMsg = NewStrBuf();
 670         serv_puts("GTSN");
 671         StrBuf_ServGetln(OldMsg);
 672         if (GetServerStatus(OldMsg, NULL) == 2) {
 673                 StrBufCutLeft(OldMsg, 4);
 674         }
 675         else {
 676                 FreeStrBuf(&OldMsg);
 677                 return;
 678         }
 679
 680         if (ParseMSet(&MatchMSet, OldMsg))
 681         {
 682                 SetFlagsFromMSet(WCC->summ, MatchMSet, MSGFLAG_READ, 0);
 683         }
 684         DeleteMSet(&MatchMSet);
 685         FreeStrBuf(&OldMsg);
 686 }
 687
 688 extern readloop_struct rlid[];
 689
 690 typedef struct _RoomRenderer{
 691         int RoomType;
 692
 693         GetParamsGetServerCall_func GetParamsGetServerCall;
 694
 695         PrintViewHeader_func PrintPageHeader;
 696         PrintViewHeader_func PrintViewHeader;
 697         LoadMsgFromServer_func LoadMsgFromServer;
 698         RenderView_or_Tail_func RenderView_or_Tail;
 699         View_Cleanup_func ViewCleanup;
 700         load_msg_ptrs_detailheaders LHParse;
 701 } RoomRenderer;
 702
 703
 704 /*
 705  * command loop for reading messages
 706  *
 707  * Set oper to "readnew" or "readold" or "readfwd" or "headers" or "readgt" or "readlt" or "do_search"
 708  */
 709 void readloop(long oper, eCustomRoomRenderer ForceRenderer)
 710 {
 711         RoomRenderer *ViewMsg;
 712         void *vViewMsg;
 713         void *vMsg;
 714         message_summary *Msg;
 715         char cmd[256] = "";
 716         char filter[256] = "";
 717         int i, r;
 718         wcsession *WCC = WC;
 719         HashPos *at;
 720         const char *HashKey;
 721         long HKLen;
 722         WCTemplputParams SubTP;
 723         SharedMessageStatus Stat;
 724         void *ViewSpecific;
 725
 726         if (havebstr("is_summary") && (1 == (ibstr("is_summary")))) {
 727                 WCC->CurRoom.view = VIEW_MAILBOX;
 728         }
 729
 730         if (havebstr("view")) {
 731                 WCC->CurRoom.view = ibstr("view");
 732         }
 733
 734         memset(&Stat, 0, sizeof(SharedMessageStatus));
 735         Stat.maxload = 10000;
 736         Stat.lowest_found = (-1);
 737         Stat.highest_found = (-1);
 738         if (ForceRenderer == eUseDefault)
 739                 GetHash(ReadLoopHandler, IKEY(WCC->CurRoom.view), &vViewMsg);
 740         else
 741                 GetHash(ReadLoopHandler, IKEY(ForceRenderer), &vViewMsg);
 742         if (vViewMsg == NULL) {
 743                 WCC->CurRoom.view = VIEW_BBS;
 744                 GetHash(ReadLoopHandler, IKEY(WCC->CurRoom.view), &vViewMsg);
 745         }
 746         if (vViewMsg == NULL) {
 747                 return;                 /* TODO: print message */
 748         }
 749
 750         ViewMsg = (RoomRenderer*) vViewMsg;
 751         if (ViewMsg->PrintPageHeader == NULL)
 752                 output_headers(1, 1, 1, 0, 0, 0);
 753         else
 754                 ViewMsg->PrintPageHeader(&Stat, ViewSpecific);
 755
 756         if (ViewMsg->GetParamsGetServerCall != NULL) {
 757                 r = ViewMsg->GetParamsGetServerCall(
 758                        &Stat,
 759                        &ViewSpecific,
 760                        oper,
 761                        cmd, sizeof(cmd),
 762                        filter, sizeof(filter)
 763                 );
 764         } else {
 765                 r = 0;
 766         }
 767
 768         switch(r)
 769         {
 770         case 400:
 771         case 404:
 772
 773                 return;
 774         case 300: /* the callback hook should do the work for us here, since he knows what to do. */
 775                 return;
 776         case 200:
 777         default:
 778                 break;
 779         }
 780         if (!IsEmptyStr(cmd)) {
 781                 const char *p = NULL;
 782                 if (!IsEmptyStr(filter))
 783                         p = filter;
 784                 Stat.nummsgs = load_msg_ptrs(cmd, p, &Stat, ViewMsg->LHParse);
 785         }
 786
 787         if (Stat.sortit) {
 788                 CompareFunc SortIt;
 789                 memset(&SubTP, 0, sizeof(WCTemplputParams));
 790                 SubTP.Filter.ContextType = CTX_MAILSUM;
 791                 SubTP.Context = NULL;
 792                 SortIt =  RetrieveSort(&SubTP, NULL, 0,
 793                                        HKEY("date"), Stat.defaultsortorder);
 794                 if (SortIt != NULL)
 795                         SortByPayload(WCC->summ, SortIt);
 796         }
 797         if (Stat.startmsg < 0) {
 798                 Stat.startmsg =  0;
 799         }
 800
 801         if (Stat.load_seen) load_seen_flags();
 802
 803         /*
 804          * Print any inforation above the message list...
 805          */
 806         if (ViewMsg->PrintViewHeader != NULL)
 807                 ViewMsg->PrintViewHeader(&Stat, &ViewSpecific);
 808
 809         WCC->startmsg =  Stat.startmsg;
 810         WCC->maxmsgs = Stat.maxmsgs;
 811         WCC->num_displayed = 0;
 812
 813         /* Put some helpful data in vars for mailsummary_json */
 814         {
 815                 StrBuf *Foo;
 816
 817                 Foo = NewStrBuf ();
 818                 StrBufPrintf(Foo, "%ld", Stat.nummsgs);
 819                 PutBstr(HKEY("__READLOOP:TOTALMSGS"), NewStrBufDup(Foo));
 820                 StrBufPrintf(Foo, "%ld", Stat.startmsg);
 821                 PutBstr(HKEY("__READLOOP:STARTMSG"), Foo);
 822         }
 823
 824         /*
 825          * iterate over each message. if we need to load an attachment, do it here.
 826          */
 827
 828         if ((ViewMsg->LoadMsgFromServer != NULL) &&
 829             (!IsEmptyStr(cmd)))
 830         {
 831                 at = GetNewHashPos(WCC->summ, 0);
 832                 Stat.num_displayed = i = 0;
 833                 while ( GetNextHashPos(WCC->summ, at, &HKLen, &HashKey, &vMsg)) {
 834                         Msg = (message_summary*) vMsg;
 835                         if ((Msg->msgnum >= Stat.startmsg) && (Stat.num_displayed <= Stat.maxmsgs)) {
 836                                 ViewMsg->LoadMsgFromServer(&Stat,
 837                                                            &ViewSpecific,
 838                                                            Msg,
 839                                                            (Msg->Flags & MSGFLAG_READ) != 0,
 840                                                            i);
 841                         }
 842                         i++;
 843                 }
 844                 DeleteHashPos(&at);
 845         }
 846
 847         /*
 848          * Done iterating the message list. now tasks we want to do after.
 849          */
 850         if (ViewMsg->RenderView_or_Tail != NULL)
 851                 ViewMsg->RenderView_or_Tail(&Stat, &ViewSpecific, oper);
 852
 853         if (ViewMsg->ViewCleanup != NULL)
 854                 ViewMsg->ViewCleanup(&ViewSpecific);
 855
 856         WCC->startmsg = 0;
 857         WCC->maxmsgs = 0;
 858         if (WCC->summ != NULL) {
 859                 DeleteHash(&WCC->summ);
 860         }
 861 }
 862
 863
 864 /*
 865  * Back end for post_message()
 866  * ... this is where the actual message gets transmitted to the server.
 867  */
 868 void post_mime_to_server(void) {
 869         wcsession *WCC = WC;
 870         char top_boundary[SIZ];
 871         char alt_boundary[SIZ];
 872         int is_multipart = 0;
 873         static int seq = 0;
 874         wc_mime_attachment *att;
 875         char *encoded;
 876         size_t encoded_length;
 877         size_t encoded_strlen;
 878         char *txtmail = NULL;
 879         int include_text_alt = 0;       /* Set to nonzero to include multipart/alternative text/plain */
 880
 881         sprintf(top_boundary, "Citadel--Multipart--%s--%04x--%04x",
 882                 ChrPtr(WCC->serv_info->serv_fqdn),
 883                 getpid(),
 884                 ++seq
 885         );
 886         sprintf(alt_boundary, "Citadel--Multipart--%s--%04x--%04x",
 887                 ChrPtr(WCC->serv_info->serv_fqdn),
 888                 getpid(),
 889                 ++seq
 890         );
 891
 892         /* RFC2045 requires this, and some clients look for it... */
 893         serv_puts("MIME-Version: 1.0");
 894         serv_puts("X-Mailer: " PACKAGE_STRING);
 895
 896         /* If there are attachments, we have to do multipart/mixed */
 897         if (GetCount(WCC->attachments) > 0) {
 898                 is_multipart = 1;
 899         }
 900
 901         /* Only do multipart/alternative for mailboxes.  BBS and Wiki rooms don't need it. */
 902         if (WC->CurRoom.view == VIEW_MAILBOX) {
 903                 include_text_alt = 1;
 904         }
 905
 906         if (is_multipart) {
 907                 /* Remember, serv_printf() appends an extra newline */
 908                 serv_printf("Content-type: multipart/mixed; boundary=\"%s\"\n", top_boundary);
 909                 serv_printf("This is a multipart message in MIME format.\n");
 910                 serv_printf("--%s", top_boundary);
 911         }
 912
 913         /* Remember, serv_printf() appends an extra newline */
 914         if (include_text_alt) {
 915                 serv_printf("Content-type: multipart/alternative; "
 916                         "boundary=\"%s\"\n", alt_boundary);
 917                 serv_printf("This is a multipart message in MIME format.\n");
 918                 serv_printf("--%s", alt_boundary);
 919
 920                 serv_puts("Content-type: text/plain; charset=utf-8");
 921                 serv_puts("Content-Transfer-Encoding: quoted-printable");
 922                 serv_puts("");
 923                 txtmail = html_to_ascii(bstr("msgtext"), 0, 80, 0);
 924                 text_to_server_qp(txtmail);     /* Transmit message in quoted-printable encoding */
 925                 free(txtmail);
 926
 927                 serv_printf("\n--%s", alt_boundary);
 928         }
 929
 930         serv_puts("Content-type: text/html; charset=utf-8");
 931         serv_puts("Content-Transfer-Encoding: quoted-printable");
 932         serv_puts("");
 933         serv_puts("<html><body>\r\n");
 934         text_to_server_qp(bstr("msgtext"));     /* Transmit message in quoted-printable encoding */
 935         serv_puts("</body></html>\r\n");
 936
 937         if (include_text_alt) {
 938                 serv_printf("--%s--", alt_boundary);
 939         }
 940
 941         if (is_multipart) {
 942                 long len;
 943                 const char *Key;
 944                 void *vAtt;
 945                 HashPos  *it;
 946
 947                 /* Add in the attachments */
 948                 it = GetNewHashPos(WCC->attachments, 0);
 949                 while (GetNextHashPos(WCC->attachments, it, &len, &Key, &vAtt)) {
 950                         att = (wc_mime_attachment *)vAtt;
 951                         if (att->length == 0)
 952                                 continue;
 953                         encoded_length = ((att->length * 150) / 100);
 954                         encoded = malloc(encoded_length);
 955                         if (encoded == NULL) break;
 956                         encoded_strlen = CtdlEncodeBase64(encoded, ChrPtr(att->Data), StrLength(att->Data), 1);
 957
 958                         serv_printf("--%s", top_boundary);
 959                         serv_printf("Content-type: %s", ChrPtr(att->ContentType));
 960                         serv_printf("Content-disposition: attachment; filename=\"%s\"", ChrPtr(att->FileName));
 961                         serv_puts("Content-transfer-encoding: base64");
 962                         serv_puts("");
 963                         serv_write(encoded, encoded_strlen);
 964                         serv_puts("");
 965                         serv_puts("");
 966                         free(encoded);
 967                 }
 968                 serv_printf("--%s--", top_boundary);
 969                 DeleteHashPos(&it);
 970         }
 971
 972         serv_puts("000");
 973 }
 974
 975
 976 /*
 977  * Post message (or don't post message)
 978  *
 979  * Note regarding the "dont_post" variable:
 980  * A random value (actually, it's just a timestamp) is inserted as a hidden
 981  * field called "postseq" when the display_enter page is generated.  This
 982  * value is checked when posting, using the static variable dont_post.  If a
 983  * user attempts to post twice using the same dont_post value, the message is
 984  * discarded.  This prevents the accidental double-saving of the same message
 985  * if the user happens to click the browser "back" button.
 986  */
 987 void post_message(void)
 988 {
 989         StrBuf *UserName;
 990         StrBuf *EmailAddress;
 991         StrBuf *EncBuf;
 992         char buf[1024];
 993         StrBuf *encoded_subject = NULL;
 994         static long dont_post = (-1L);
 995         int is_anonymous = 0;
 996         const StrBuf *display_name = NULL;
 997         wcsession *WCC = WC;
 998         StrBuf *Buf;
 999
1000         if (havebstr("force_room")) {
1001                 gotoroom(sbstr("force_room"));
1002         }
1003
1004         if (havebstr("display_name")) {
1005                 display_name = sbstr("display_name");
1006                 if (!strcmp(ChrPtr(display_name), "__ANONYMOUS__")) {
1007                         display_name = NULL;
1008                         is_anonymous = 1;
1009                 }
1010         }
1011
1012         if (!strcasecmp(bstr("submit_action"), "cancel")) {
1013                 AppendImportantMessage(_("Cancelled.  Message was not posted."), -1);
1014         } else if (lbstr("postseq") == dont_post) {
1015                 AppendImportantMessage(
1016                         _("Automatically cancelled because you have already "
1017                           "saved this message."), -1);
1018         } else {
1019                 const char CMD[] = "ENT0 1|%s|%d|4|%s|%s||%s|%s|%s|%s|%s";
1020                 StrBuf *Recp = NULL;
1021                 StrBuf *Cc = NULL;
1022                 StrBuf *Bcc = NULL;
1023                 char *wikipage = NULL;
1024                 const StrBuf *my_email_addr = NULL;
1025                 StrBuf *CmdBuf = NULL;
1026                 StrBuf *references = NULL;
1027                 int saving_to_drafts = 0;
1028                 long HeaderLen = 0;
1029
1030                 saving_to_drafts = !strcasecmp(bstr("submit_action"), "draft");
1031                 Buf = NewStrBuf();
1032
1033                 if (saving_to_drafts) {
1034                         /* temporarily change to the drafts room */
1035                         serv_puts("GOTO _DRAFTS_");
1036                         StrBuf_ServGetln(Buf);
1037                         if (GetServerStatusMsg(Buf, NULL, 1, 2) != 2) {
1038                                 /* You probably don't even have a dumb Drafts folder */
1039                                 syslog(9, "%s:%d: server save to drafts error: %s\n", __FILE__, __LINE__, ChrPtr(Buf) + 4);
1040                                 AppendImportantMessage(_("Saved to Drafts failed: "), -1);
1041                                 display_enter();
1042                                 FreeStrBuf(&Buf);
1043                                 return;
1044                         }
1045                 }
1046
1047                 if (havebstr("references"))
1048                 {
1049                         const StrBuf *ref = sbstr("references");
1050                         references = NewStrBufDup(ref);
1051                         if (*ChrPtr(references) == '|') {       /* remove leading '|' if present */
1052                                 StrBufCutLeft(references, 1);
1053                         }
1054                         StrBufReplaceChars(references, '|', '!');
1055                 }
1056                 if (havebstr("subject")) {
1057                         const StrBuf *Subj;
1058                         /*
1059                          * make enough room for the encoded string;
1060                          * plus the QP header
1061                          */
1062                         Subj = sbstr("subject");
1063
1064                         StrBufRFC2047encode(&encoded_subject, Subj);
1065                 }
1066                 UserName = NewStrBuf();
1067                 EmailAddress = NewStrBuf();
1068                 EncBuf = NewStrBuf();
1069
1070                 Recp = StrBufSanitizeEmailRecipientVector(sbstr("recp"), UserName, EmailAddress, EncBuf);
1071                 Cc = StrBufSanitizeEmailRecipientVector(sbstr("cc"), UserName, EmailAddress, EncBuf);
1072                 Bcc = StrBufSanitizeEmailRecipientVector(sbstr("bcc"), UserName, EmailAddress, EncBuf);
1073
1074                 FreeStrBuf(&UserName);
1075                 FreeStrBuf(&EmailAddress);
1076                 FreeStrBuf(&EncBuf);
1077
1078                 wikipage = strdup(bstr("page"));
1079                 str_wiki_index(wikipage);
1080                 my_email_addr = sbstr("my_email_addr");
1081
1082                 HeaderLen = StrLength(Recp) +
1083                         StrLength(encoded_subject) +
1084                         StrLength(Cc) +
1085                         StrLength(Bcc) +
1086                         strlen(wikipage) +
1087                         StrLength(my_email_addr) +
1088                         StrLength(references);
1089                 CmdBuf = NewStrBufPlain(NULL, sizeof (CMD) + HeaderLen);
1090                 StrBufPrintf(CmdBuf,
1091                              CMD,
1092                              saving_to_drafts?"":ChrPtr(Recp),
1093                              is_anonymous,
1094                              ChrPtr(encoded_subject),
1095                              ChrPtr(display_name),
1096                              saving_to_drafts?"":ChrPtr(Cc),
1097                              saving_to_drafts?"":ChrPtr(Bcc),
1098                              wikipage,
1099                              ChrPtr(my_email_addr),
1100                              ChrPtr(references));
1101                 FreeStrBuf(&references);
1102                 FreeStrBuf(&encoded_subject);
1103                 free(wikipage);
1104
1105                 if ((HeaderLen + StrLength(sbstr("msgtext")) < 10) &&
1106                     (GetCount(WCC->attachments) == 0)){
1107                         AppendImportantMessage(_("Refusing to post empty message.\n"), -1);
1108                         FreeStrBuf(&CmdBuf);
1109
1110                 }
1111                 else
1112                 {
1113                         syslog(9, "%s\n", ChrPtr(CmdBuf));
1114                         serv_puts(ChrPtr(CmdBuf));
1115                         FreeStrBuf(&CmdBuf);
1116
1117                         StrBuf_ServGetln(Buf);
1118                         if (GetServerStatus(Buf, NULL) == 4) {
1119                                 if (saving_to_drafts) {
1120                                         if (  (havebstr("recp"))
1121                                               || (havebstr("cc"  ))
1122                                               || (havebstr("bcc" )) ) {
1123                                                 /* save recipient headers or room to post to */
1124                                                 serv_printf("To: %s", ChrPtr(Recp));
1125                                                 serv_printf("Cc: %s", ChrPtr(Cc));
1126                                                 serv_printf("Bcc: %s", ChrPtr(Bcc));
1127                                         } else {
1128                                                 serv_printf("X-Citadel-Room: %s", ChrPtr(WC->CurRoom.name));
1129                                         }
1130                                 }
1131                                 post_mime_to_server();
1132                                 if (saving_to_drafts) {
1133                                         AppendImportantMessage(_("Message has been saved to Drafts.\n"), -1);
1134                                         gotoroom(WCC->CurRoom.name);
1135                                         fixview();
1136                                         readloop(readnew, eUseDefault);
1137                                         FreeStrBuf(&Buf);
1138                                         return;
1139                                 } else if (  (havebstr("recp"))
1140                                              || (havebstr("cc"  ))
1141                                              || (havebstr("bcc" ))
1142                                         ) {
1143                                         AppendImportantMessage(_("Message has been sent.\n"), -1);
1144                                 }
1145                                 else {
1146                                         AppendImportantMessage(_("Message has been posted.\n"), -1);
1147                                 }
1148                                 dont_post = lbstr("postseq");
1149                         } else {
1150                                 syslog(9, "%s:%d: server post error: %s", __FILE__, __LINE__, ChrPtr(Buf) + 4);
1151                                 AppendImportantMessage(ChrPtr(Buf) + 4, StrLength(Buf) - 4);
1152                                 display_enter();
1153                                 if (saving_to_drafts) gotoroom(WCC->CurRoom.name);
1154                                 FreeStrBuf(&Recp);
1155                                 FreeStrBuf(&Buf);
1156                                 FreeStrBuf(&Cc);
1157                                 FreeStrBuf(&Bcc);
1158                                 return;
1159                         }
1160                 }
1161                 FreeStrBuf(&Recp);
1162                 FreeStrBuf(&Buf);
1163                 FreeStrBuf(&Cc);
1164                 FreeStrBuf(&Bcc);
1165         }
1166
1167         DeleteHash(&WCC->attachments);
1168
1169         /*
1170          *  We may have been supplied with instructions regarding the location
1171          *  to which we must return after posting.  If found, go there.
1172          */
1173         if (havebstr("return_to")) {
1174                 http_redirect(bstr("return_to"));
1175         }
1176         /*
1177          *  If we were editing a page in a wiki room, go to that page now.
1178          */
1179         else if (havebstr("page")) {
1180                 snprintf(buf, sizeof buf, "wiki?page=%s", bstr("page"));
1181                 http_redirect(buf);
1182         }
1183         /*
1184          *  Otherwise, just go to the "read messages" loop.
1185          */
1186         else {
1187                 fixview();
1188                 readloop(readnew, eUseDefault);
1189         }
1190 }
1191
1192
1193 /*
1194  * Client is uploading an attachment
1195  */
1196 void upload_attachment(void) {
1197         wcsession *WCC = WC;
1198         const char *pch;
1199         int n;
1200         const char *newn;
1201         long newnlen;
1202         void *v;
1203         wc_mime_attachment *att;
1204
1205         syslog(9, "upload_attachment()\n");
1206         wc_printf("upload_attachment()<br>\n");
1207
1208         if (WCC->upload_length <= 0) {
1209                 syslog(9, "ERROR no attachment was uploaded\n");
1210                 wc_printf("ERROR no attachment was uploaded<br>\n");
1211                 return;
1212         }
1213
1214         syslog(9, "Client is uploading %d bytes\n", WCC->upload_length);
1215         wc_printf("Client is uploading %d bytes<br>\n", WCC->upload_length);
1216         att = malloc(sizeof(wc_mime_attachment));
1217         memset(att, 0, sizeof(wc_mime_attachment ));
1218         att->length = WCC->upload_length;
1219         att->ContentType = NewStrBufPlain(WCC->upload_content_type, -1);
1220         att->FileName = NewStrBufDup(WCC->upload_filename);
1221
1222         if (WCC->attachments == NULL) {
1223                 WCC->attachments = NewHash(1, Flathash);
1224         }
1225
1226         /* And add it to the list. */
1227         n = 0;
1228         if ((GetCount(WCC->attachments) > 0) &&
1229             GetHashAt(WCC->attachments,
1230                       GetCount(WCC->attachments) -1,
1231                       &newnlen, &newn, &v))
1232             n = *((int*) newn) + 1;
1233         Put(WCC->attachments, IKEY(n), att, DestroyMime);
1234
1235         /*
1236          * Mozilla sends a simple filename, which is what we want,
1237          * but Satan's Browser sends an entire pathname.  Reduce
1238          * the path to just a filename if we need to.
1239          */
1240         pch = strrchr(ChrPtr(att->FileName), '/');
1241         if (pch != NULL) {
1242                 StrBufCutLeft(att->FileName, pch - ChrPtr(att->FileName) + 1);
1243         }
1244         pch = strrchr(ChrPtr(att->FileName), '\\');
1245         if (pch != NULL) {
1246                 StrBufCutLeft(att->FileName, pch - ChrPtr(att->FileName) + 1);
1247         }
1248
1249         /*
1250          * Transfer control of this memory from the upload struct
1251          * to the attachment struct.
1252          */
1253         att->Data = WCC->upload;
1254         WCC->upload = NULL;
1255         WCC->upload_length = 0;
1256 }
1257
1258
1259 /*
1260  * Remove an attachment from the message currently being composed.
1261  *
1262  * Currently we identify the attachment to be removed by its filename.
1263  * There is probably a better way to do this.
1264  */
1265 void remove_attachment(void) {
1266         wcsession *WCC = WC;
1267         wc_mime_attachment *att;
1268         void *vAtt;
1269         StrBuf *WhichAttachment;
1270         HashPos *at;
1271         long len;
1272         const char *key;
1273
1274         WhichAttachment = NewStrBufDup(sbstr("which_attachment"));
1275         StrBufUnescape(WhichAttachment, 0);
1276         at = GetNewHashPos(WCC->attachments, 0);
1277         do {
1278                 GetHashPos(WCC->attachments, at, &len, &key, &vAtt);
1279
1280                 att = (wc_mime_attachment*) vAtt;
1281                 if ((att != NULL) &&
1282                     (strcmp(ChrPtr(WhichAttachment),
1283                             ChrPtr(att->FileName)   ) == 0))
1284                 {
1285                         DeleteEntryFromHash(WCC->attachments, at);
1286                         break;
1287                 }
1288         }
1289         while (NextHashPos(WCC->attachments, at));
1290         FreeStrBuf(&WhichAttachment);
1291         wc_printf("remove_attachment() completed\n");
1292 }
1293
1294
1295 long FourHash(const char *key, long length)
1296 {
1297         int i;
1298         long ret = 0;
1299         const unsigned char *ptr = (const unsigned char*)key;
1300
1301         for (i = 0; i < 4; i++, ptr ++)
1302                 ret = (ret << 8) |
1303                         ( ((*ptr >= 'a') &&
1304                            (*ptr <= 'z'))?
1305                           *ptr - 'a' + 'A':
1306                           *ptr);
1307
1308         return ret;
1309 }
1310
1311 long l_subj;
1312 long l_wefw;
1313 long l_msgn;
1314 long l_from;
1315 long l_rcpt;
1316 long l_cccc;
1317 long l_replyto;
1318 long l_node;
1319 long l_rfca;
1320
1321 const char *ReplyToModeStrings [3] = {
1322         "reply",
1323         "replyalle",
1324         "forward"
1325 };
1326 typedef enum _eReplyToNodes {
1327         eReply,
1328         eReplyAll,
1329         eForward
1330 }eReplyToNodes;
1331
1332 /*
1333  * display the message entry screen
1334  */
1335 void display_enter(void)
1336 {
1337         const char *ReplyingModeStr;
1338         eReplyToNodes ReplyMode = eReply;
1339         StrBuf *Line;
1340         long Result;
1341         int rc;
1342         const StrBuf *display_name = NULL;
1343         int recipient_required = 0;
1344         int subject_required = 0;
1345         int is_anonymous = 0;
1346         wcsession *WCC = WC;
1347         int i = 0;
1348         long replying_to;
1349
1350         if (havebstr("force_room")) {
1351                 gotoroom(sbstr("force_room"));
1352         }
1353
1354         display_name = sbstr("display_name");
1355         if (!strcmp(ChrPtr(display_name), "__ANONYMOUS__")) {
1356                 display_name = NULL;
1357                 is_anonymous = 1;
1358         }
1359
1360         /*
1361          * First, do we have permission to enter messages in this room at all?
1362          */
1363         Line = NewStrBuf();
1364         serv_puts("ENT0 0");
1365         StrBuf_ServGetln(Line);
1366         rc = GetServerStatusMsg(Line, &Result, 0, 2);
1367
1368         if (Result == 570) {            /* 570 means that we need a recipient here */
1369                 recipient_required = 1;
1370         }
1371         else if (rc != 2) {             /* Any other error means that we cannot continue */
1372                 rc = GetServerStatusMsg(Line, &Result, 0, 2);
1373                 fixview();
1374                 readloop(readnew, eUseDefault);
1375                 FreeStrBuf(&Line);
1376                 return;
1377         }
1378
1379         /* Is the server strongly recommending that the user enter a message subject? */
1380         if (StrLength(Line) > 4) {
1381                 subject_required = extract_int(ChrPtr(Line) + 4, 1);
1382         }
1383
1384         /*
1385          * Are we perhaps in an address book view?  If so, then an "enter
1386          * message" command really means "add new entry."
1387          */
1388         if (WCC->CurRoom.defview == VIEW_ADDRESSBOOK) {
1389                 do_edit_vcard(-1, "", NULL, NULL, "",  ChrPtr(WCC->CurRoom.name));
1390                 FreeStrBuf(&Line);
1391                 return;
1392         }
1393
1394         /*
1395          * Are we perhaps in a calendar room?  If so, then an "enter
1396          * message" command really means "add new calendar item."
1397          */
1398         if (WCC->CurRoom.defview == VIEW_CALENDAR) {
1399                 display_edit_event();
1400                 FreeStrBuf(&Line);
1401                 return;
1402         }
1403
1404         /*
1405          * Are we perhaps in a tasks view?  If so, then an "enter
1406          * message" command really means "add new task."
1407          */
1408         if (WCC->CurRoom.defview == VIEW_TASKS) {
1409                 display_edit_task();
1410                 FreeStrBuf(&Line);
1411                 return;
1412         }
1413
1414
1415         ReplyingModeStr = bstr("replying_mode");
1416         if (ReplyingModeStr != NULL) for (i = 0; i < 3; i++) {
1417                         if (strcmp(ReplyingModeStr, ReplyToModeStrings[i]) == 0) {
1418                                 ReplyMode = (eReplyToNodes) i;
1419                                 break;
1420                         }
1421                 }
1422
1423
1424         /*
1425          * If the "replying_to" variable is set, it refers to a message
1426          * number from which we must extract some header fields...
1427          */
1428         replying_to = lbstr("replying_to");
1429         if (replying_to > 0) {
1430                 long len;
1431                 StrBuf *wefw = NULL;
1432                 StrBuf *msgn = NULL;
1433                 StrBuf *from = NULL;
1434                 StrBuf *node = NULL;
1435                 StrBuf *rfca = NULL;
1436                 StrBuf *rcpt = NULL;
1437                 StrBuf *cccc = NULL;
1438                 StrBuf *replyto = NULL;
1439                 serv_printf("MSG0 %ld|1", replying_to);
1440
1441                 StrBuf_ServGetln(Line);
1442                 if (GetServerStatusMsg(Line, NULL, 0, 0) == 1)
1443                         while (len = StrBuf_ServGetln(Line),
1444                                (len >= 0) &&
1445                                ((len != 3)  ||
1446                                 strcmp(ChrPtr(Line), "000")))
1447                         {
1448                                 long which = 0;
1449                                 if ((StrLength(Line) > 4) &&
1450                                     (ChrPtr(Line)[4] == '='))
1451                                         which = FourHash(ChrPtr(Line), 4);
1452
1453                                 if (which == l_subj)
1454                                 {
1455                                         StrBuf *subj = NewStrBuf();
1456                                         StrBuf *FlatSubject;
1457
1458                                         if (ReplyMode == eForward) {
1459                                                 if (strncasecmp(ChrPtr(Line) + 5, "Fw:", 3)) {
1460                                                         StrBufAppendBufPlain(subj, HKEY("Fw: "), 0);
1461                                                 }
1462                                         }
1463                                         else {
1464                                                 if (strncasecmp(ChrPtr(Line) + 5, "Re:", 3)) {
1465                                                         StrBufAppendBufPlain(subj, HKEY("Re: "), 0);
1466                                                 }
1467                                         }
1468                                         StrBufAppendBufPlain(subj,
1469                                                              ChrPtr(Line) + 5,
1470                                                              StrLength(Line) - 5, 0);
1471                                         FlatSubject = NewStrBufPlain(NULL, StrLength(subj));
1472                                         StrBuf_RFC822_to_Utf8(FlatSubject, subj, NULL, NULL);
1473
1474                                         PutBstr(HKEY("subject"), FlatSubject);
1475                                 }
1476
1477                                 else if (which == l_wefw)
1478                                 {
1479                                         int rrtok;
1480                                         int rrlen;
1481
1482                                         wefw = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1483
1484                                         /* Trim down excessively long lists of thread references.  We eliminate the
1485                                          * second one in the list so that the thread root remains intact.
1486                                          */
1487                                         rrtok = num_tokens(ChrPtr(wefw), '|');
1488                                         rrlen = StrLength(wefw);
1489                                         if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
1490                                                 StrBufRemove_token(wefw, 1, '|');
1491                                         }
1492                                 }
1493
1494                                 else if (which == l_msgn) {
1495                                         msgn = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1496                                 }
1497
1498                                 else if (which == l_from) {
1499                                         StrBuf *FlatFrom;
1500                                         from = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1501                                         FlatFrom = NewStrBufPlain(NULL, StrLength(from));
1502                                         StrBuf_RFC822_to_Utf8(FlatFrom, from, NULL, NULL);
1503                                         FreeStrBuf(&from);
1504                                         from = FlatFrom;
1505                                         for (i=0; i<StrLength(from); ++i) {
1506                                                 if (ChrPtr(from)[i] == ',')
1507                                                         StrBufPeek(from, NULL, i, ' ');
1508                                         }
1509                                 }
1510
1511                                 else if (which == l_rcpt) {
1512                                         rcpt = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1513                                 }
1514
1515                                 else if (which == l_cccc) {
1516                                         cccc = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1517                                 }
1518
1519                                 else if (which == l_node) {
1520                                         node = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1521                                 }
1522                                 else if (which == l_replyto) {
1523                                         replyto = NewStrBufPlain(ChrPtr(Line) + 5, StrLength(Line) - 5);
1524                                 }
1525                                 else if (which == l_rfca) {
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                                 }
1533                         }
1534
1535
1536                 if (StrLength(wefw) + StrLength(msgn) > 0) {
1537                         StrBuf *refs = NewStrBuf();
1538                         if (StrLength(wefw) > 0) {
1539                                 StrBufAppendBuf(refs, wefw, 0);
1540                         }
1541                         if ( (StrLength(wefw) > 0) &&
1542                              (StrLength(msgn) > 0) )
1543                         {
1544                                 StrBufAppendBufPlain(refs, HKEY("|"), 0);
1545                         }
1546                         if (StrLength(msgn) > 0) {
1547                                 StrBufAppendBuf(refs, msgn, 0);
1548                         }
1549                         PutBstr(HKEY("references"), refs);
1550                 }
1551
1552                 /*
1553                  * If this is a Reply or a ReplyAll, copy the sender's email into the To: field
1554                  */
1555                 if ((ReplyMode == eReply) || (ReplyMode == eReplyAll))
1556                 {
1557                         StrBuf *to_rcpt;
1558                         if ((StrLength(replyto) > 0) && (ReplyMode == eReplyAll)) {
1559                                 to_rcpt = NewStrBuf();
1560                                 StrBufAppendBuf(to_rcpt, replyto, 0);
1561                         }
1562                         else if (StrLength(rfca) > 0) {
1563                                 to_rcpt = NewStrBuf();
1564                                 StrBufAppendBuf(to_rcpt, from, 0);
1565                                 StrBufAppendBufPlain(to_rcpt, HKEY(" <"), 0);
1566                                 StrBufAppendBuf(to_rcpt, rfca, 0);
1567                                 StrBufAppendBufPlain(to_rcpt, HKEY(">"), 0);
1568                         }
1569                         else {
1570                                 to_rcpt =  from;
1571                                 from = NULL;
1572                                 if (    (StrLength(node) > 0)
1573                                         && (strcasecmp(ChrPtr(node), ChrPtr(WC->serv_info->serv_nodename)))
1574                                 ) {
1575                                         StrBufAppendBufPlain(to_rcpt, HKEY(" @ "), 0);
1576                                         StrBufAppendBuf(to_rcpt, node, 0);
1577                                 }
1578                         }
1579                         PutBstr(HKEY("recp"), to_rcpt);
1580                 }
1581
1582                 /*
1583                  * Only if this is a ReplyAll, copy all recipients into the Cc: field
1584                  */
1585                 if (ReplyMode == eReplyAll)
1586                 {
1587                         StrBuf *cc_rcpt = rcpt;
1588                         rcpt = NULL;
1589                         if ((StrLength(cccc) > 0) && (StrLength(replyto) == 0))
1590                         {
1591                                 if (cc_rcpt != NULL)  {
1592                                         StrBufAppendPrintf(cc_rcpt, ", ");
1593                                         StrBufAppendBuf(cc_rcpt, cccc, 0);
1594                                 } else {
1595                                         cc_rcpt = cccc;
1596                                         cccc = NULL;
1597                                 }
1598                         }
1599                         if (cc_rcpt != NULL)
1600                                 PutBstr(HKEY("cc"), cc_rcpt);
1601                 }
1602                 FreeStrBuf(&wefw);
1603                 FreeStrBuf(&msgn);
1604                 FreeStrBuf(&from);
1605                 FreeStrBuf(&node);
1606                 FreeStrBuf(&rfca);
1607                 FreeStrBuf(&rcpt);
1608                 FreeStrBuf(&cccc);
1609         }
1610         FreeStrBuf(&Line);
1611         /*
1612          * Otherwise proceed normally.
1613          * Do a custom room banner with no navbar...
1614          */
1615
1616         if (recipient_required) {
1617                 const StrBuf *Recp = NULL;
1618                 const StrBuf *Cc = NULL;
1619                 const StrBuf *Bcc = NULL;
1620                 char *wikipage = NULL;
1621                 StrBuf *CmdBuf = NULL;
1622                 const char CMD[] = "ENT0 0|%s|%d|0||%s||%s|%s|%s";
1623
1624                 Recp = sbstr("recp");
1625                 Cc = sbstr("cc");
1626                 Bcc = sbstr("bcc");
1627                 wikipage = strdup(bstr("page"));
1628                 str_wiki_index(wikipage);
1629
1630                 CmdBuf = NewStrBufPlain(NULL,
1631                                         sizeof (CMD) +
1632                                         StrLength(Recp) +
1633                                         StrLength(display_name) +
1634                                         StrLength(Cc) +
1635                                         StrLength(Bcc) +
1636                                         strlen(wikipage));
1637
1638                 StrBufPrintf(CmdBuf,
1639                              CMD,
1640                              ChrPtr(Recp),
1641                              is_anonymous,
1642                              ChrPtr(display_name),
1643                              ChrPtr(Cc),
1644                              ChrPtr(Bcc),
1645                              wikipage
1646                 );
1647                 serv_puts(ChrPtr(CmdBuf));
1648                 StrBuf_ServGetln(CmdBuf);
1649                 free(wikipage);
1650
1651                 rc = GetServerStatusMsg(CmdBuf, &Result, 0, 0);
1652
1653                 if (    (Result == 570)         /* invalid or missing recipient(s) */
1654                         || (Result == 550)      /* higher access required to send Internet mail */
1655                 ) {
1656                         /* These errors will have been displayed and are excusable */
1657                 }
1658                 else if (rc != 2) {     /* Any other error means that we cannot continue */
1659                         AppendImportantMessage(ChrPtr(CmdBuf) + 4, StrLength(CmdBuf) - 4);
1660                         FreeStrBuf(&CmdBuf);
1661                         fixview();
1662                         readloop(readnew, eUseDefault);
1663                         return;
1664                 }
1665                 FreeStrBuf(&CmdBuf);
1666         }
1667         if (recipient_required)
1668                 PutBstr(HKEY("__RCPTREQUIRED"), NewStrBufPlain(HKEY("1")));
1669         if (recipient_required || subject_required)
1670                 PutBstr(HKEY("__SUBJREQUIRED"), NewStrBufPlain(HKEY("1")));
1671
1672         begin_burst();
1673         output_headers(1, 0, 0, 0, 1, 0);
1674         DoTemplate(HKEY("edit_message"), NULL, &NoCtx);
1675         end_burst();
1676
1677         return;
1678 }
1679
1680 /*
1681  * delete a message
1682  */
1683 void delete_msg(void)
1684 {
1685         long msgid;
1686         StrBuf *Line;
1687
1688         msgid = lbstr("msgid");
1689         Line = NewStrBuf();
1690         if ((WC->CurRoom.RAFlags & UA_ISTRASH) != 0) {  /* Delete from Trash is a real delete */
1691                 serv_printf("DELE %ld", msgid);
1692         }
1693         else {                  /* Otherwise move it to Trash */
1694                 serv_printf("MOVE %ld|_TRASH_|0", msgid);
1695         }
1696
1697         StrBuf_ServGetln(Line);
1698         GetServerStatusMsg(Line, NULL, 1, 0);
1699
1700         fixview();
1701
1702         readloop(readnew, eUseDefault);
1703 }
1704
1705
1706 /*
1707  * move a message to another room
1708  */
1709 void move_msg(void)
1710 {
1711         long msgid;
1712
1713         msgid = lbstr("msgid");
1714
1715         if (havebstr("move_button")) {
1716                 StrBuf *Line;
1717                 serv_printf("MOVE %ld|%s", msgid, bstr("target_room"));
1718                 Line = NewStrBuf();
1719                 StrBuf_ServGetln(Line);
1720                 GetServerStatusMsg(Line, NULL, 1, 0);
1721                 FreeStrBuf(&Line);
1722         } else {
1723                 AppendImportantMessage(_("The message was not moved."), -1);
1724         }
1725
1726         fixview();
1727         readloop(readnew, eUseDefault);
1728 }
1729
1730
1731
1732 /*
1733  * Generic function to output an arbitrary MIME attachment from
1734  * message being composed
1735  *
1736  * partnum              The MIME part to be output
1737  * filename             Fake filename to give
1738  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
1739  */
1740 void postpart(StrBuf *partnum, StrBuf *filename, int force_download)
1741 {
1742         void *vPart;
1743         StrBuf *content_type;
1744         wc_mime_attachment *part;
1745         int i;
1746
1747         i = StrToi(partnum);
1748         if (GetHash(WC->attachments, IKEY(i), &vPart) &&
1749             (vPart != NULL)) {
1750                 part = (wc_mime_attachment*) vPart;
1751                 if (force_download) {
1752                         content_type = NewStrBufPlain(HKEY("application/octet-stream"));
1753                 }
1754                 else {
1755                         content_type = NewStrBufDup(part->ContentType);
1756                 }
1757                 StrBufAppendBuf(WC->WBuf, part->Data, 0);
1758                 http_transmit_thing(ChrPtr(content_type), 0);
1759         } else {
1760                 hprintf("HTTP/1.1 404 %s\n", ChrPtr(partnum));
1761                 output_headers(0, 0, 0, 0, 0, 0);
1762                 hprintf("Content-Type: text/plain\r\n");
1763                 begin_burst();
1764                 wc_printf(_("An error occurred while retrieving this part: %s/%s\n"),
1765                         ChrPtr(partnum), ChrPtr(filename));
1766                 end_burst();
1767         }
1768         FreeStrBuf(&content_type);
1769 }
1770
1771
1772 /*
1773  * Generic function to output an arbitrary MIME part from an arbitrary
1774  * message number on the server.
1775  *
1776  * msgnum               Number of the item on the citadel server
1777  * partnum              The MIME part to be output
1778  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
1779  */
1780 void mimepart(int force_download)
1781 {
1782         long msgnum;
1783         long ErrorDetail;
1784         StrBuf *att;
1785         wcsession *WCC = WC;
1786         StrBuf *Buf;
1787         off_t bytes;
1788         StrBuf *ContentType = NewStrBufPlain(HKEY("application/octet-stream"));
1789         const char *CT;
1790
1791         att = Buf = NewStrBuf();
1792         msgnum = StrBufExtract_long(WCC->Hdr->HR.ReqLine, 0, '/');
1793         StrBufExtract_token(att, WCC->Hdr->HR.ReqLine, 1, '/');
1794
1795         serv_printf("OPNA %ld|%s", msgnum, ChrPtr(att));
1796         StrBuf_ServGetln(Buf);
1797         if (GetServerStatus(Buf, &ErrorDetail) == 2) {
1798                 StrBufCutLeft(Buf, 4);
1799                 bytes = StrBufExtract_long(Buf, 0, '|');
1800                 if (!force_download) {
1801                         StrBufExtract_token(ContentType, Buf, 3, '|');
1802                 }
1803
1804                 serv_read_binary(WCC->WBuf, bytes, Buf);
1805                 serv_puts("CLOS");
1806                 StrBuf_ServGetln(Buf);
1807                 CT = ChrPtr(ContentType);
1808
1809                 if (!force_download) {
1810                         if (!strcasecmp(ChrPtr(ContentType), "application/octet-stream")) {
1811                                 StrBufExtract_token(Buf, WCC->Hdr->HR.ReqLine, 2, '/');
1812                                 CT = GuessMimeByFilename(SKEY(Buf));
1813                         }
1814                         if (!strcasecmp(ChrPtr(ContentType), "application/octet-stream")) {
1815                                 CT = GuessMimeType(SKEY(WCC->WBuf));
1816                         }
1817                 }
1818                 http_transmit_thing(CT, 0);
1819         } else {
1820                 StrBufCutLeft(Buf, 4);
1821                 switch (ErrorDetail) {
1822                 default:
1823                 case ERROR + MESSAGE_NOT_FOUND:
1824                         hprintf("HTTP/1.1 404 %s\n", ChrPtr(Buf));
1825                         break;
1826                 case ERROR + NOT_LOGGED_IN:
1827                         hprintf("HTTP/1.1 401 %s\n", ChrPtr(Buf));
1828                         break;
1829
1830                 case ERROR + HIGHER_ACCESS_REQUIRED:
1831                         hprintf("HTTP/1.1 403 %s\n", ChrPtr(Buf));
1832                         break;
1833                 case ERROR + INTERNAL_ERROR:
1834                 case ERROR + TOO_BIG:
1835                         hprintf("HTTP/1.1 500 %s\n", ChrPtr(Buf));
1836                         break;
1837                 }
1838                 output_headers(0, 0, 0, 0, 0, 0);
1839                 hprintf("Content-Type: text/plain\r\n");
1840                 begin_burst();
1841                 wc_printf(_("An error occurred while retrieving this part: %s\n"),
1842                         ChrPtr(Buf));
1843                 end_burst();
1844         }
1845         FreeStrBuf(&ContentType);
1846         FreeStrBuf(&Buf);
1847 }
1848
1849
1850 /*
1851  * Read any MIME part of a message, from the server, into memory.
1852  */
1853 StrBuf *load_mimepart(long msgnum, char *partnum)
1854 {
1855         off_t bytes;
1856         StrBuf *Buf;
1857
1858         Buf = NewStrBuf();
1859         serv_printf("DLAT %ld|%s", msgnum, partnum);
1860         StrBuf_ServGetln(Buf);
1861         if (GetServerStatus(Buf, NULL) == 6) {
1862                 StrBufCutLeft(Buf, 4);
1863                 bytes = StrBufExtract_long(Buf, 0, '|');
1864                 FreeStrBuf(&Buf);
1865                 Buf = NewStrBuf();
1866                 StrBuf_ServGetBLOBBuffered(Buf, bytes);
1867                 return(Buf);
1868         }
1869         else {
1870                 FreeStrBuf(&Buf);
1871                 return(NULL);
1872         }
1873 }
1874
1875 /*
1876  * Read any MIME part of a message, from the server, into memory.
1877  */
1878 void MimeLoadData(wc_mime_attachment *Mime)
1879 {
1880         StrBuf *Buf;
1881         const char *Ptr;
1882         off_t bytes;
1883         /* TODO: is there a chance the content type is different from the one we know? */
1884
1885         serv_printf("DLAT %ld|%s", Mime->msgnum, ChrPtr(Mime->PartNum));
1886         Buf = NewStrBuf();
1887         StrBuf_ServGetln(Buf);
1888         if (GetServerStatus(Buf, NULL) == 6) {
1889                 Ptr = &(ChrPtr(Buf)[4]);
1890                 bytes = StrBufExtractNext_long(Buf, &Ptr, '|');
1891                 StrBufSkip_NTokenS(Buf, &Ptr, '|', 3);  /* filename, cbtype, mimetype */
1892                 if (Mime->Charset == NULL) Mime->Charset = NewStrBuf();
1893                 StrBufExtract_NextToken(Mime->Charset, Buf, &Ptr, '|');
1894
1895                 if (Mime->Data == NULL)
1896                         Mime->Data = NewStrBufPlain(NULL, bytes);
1897                 StrBuf_ServGetBLOBBuffered(Mime->Data, bytes);
1898         }
1899         else {
1900                 FlushStrBuf(Mime->Data);
1901                 /* TODO XImportant message */
1902         }
1903         FreeStrBuf(&Buf);
1904 }
1905
1906
1907 void view_mimepart(void) {
1908         mimepart(0);
1909 }
1910
1911 void download_mimepart(void) {
1912         mimepart(1);
1913 }
1914
1915 void view_postpart(void) {
1916         StrBuf *filename = NewStrBuf();
1917         StrBuf *partnum = NewStrBuf();
1918
1919         StrBufExtract_token(partnum, WC->Hdr->HR.ReqLine, 0, '/');
1920         StrBufExtract_token(filename, WC->Hdr->HR.ReqLine, 1, '/');
1921
1922         postpart(partnum, filename, 0);
1923
1924         FreeStrBuf(&filename);
1925         FreeStrBuf(&partnum);
1926 }
1927
1928 void download_postpart(void) {
1929         StrBuf *filename = NewStrBuf();
1930         StrBuf *partnum = NewStrBuf();
1931
1932         StrBufExtract_token(partnum, WC->Hdr->HR.ReqLine, 0, '/');
1933         StrBufExtract_token(filename, WC->Hdr->HR.ReqLine, 1, '/');
1934
1935         postpart(partnum, filename, 1);
1936
1937         FreeStrBuf(&filename);
1938         FreeStrBuf(&partnum);
1939 }
1940
1941
1942
1943 void show_num_attachments(void) {
1944         wc_printf("%d", GetCount(WC->attachments));
1945 }
1946
1947
1948 void h_readnew(void) { readloop(readnew, eUseDefault);}
1949 void h_readold(void) { readloop(readold, eUseDefault);}
1950 void h_readfwd(void) { readloop(readfwd, eUseDefault);}
1951 void h_headers(void) { readloop(headers, eUseDefault);}
1952 void h_do_search(void) { readloop(do_search, eUseDefault);}
1953 void h_readgt(void) { readloop(readgt, eUseDefault);}
1954 void h_readlt(void) { readloop(readlt, eUseDefault);}
1955
1956
1957
1958 /* Output message list in JSON format */
1959 void jsonMessageList(void) {
1960         StrBuf *View = NewStrBuf();
1961         const StrBuf *room = sbstr("room");
1962         long oper = (havebstr("query")) ? do_search : readnew;
1963         StrBufPrintf(View, "%d", VIEW_JSON_LIST);
1964         putbstr("view", View);;
1965         gotoroom(room);
1966         readloop(oper, eUseDefault);
1967 }
1968
1969 void RegisterReadLoopHandlerset(
1970         int RoomType,
1971         GetParamsGetServerCall_func GetParamsGetServerCall,
1972         PrintViewHeader_func PrintPageHeader,
1973         PrintViewHeader_func PrintViewHeader,
1974         load_msg_ptrs_detailheaders LH,
1975         LoadMsgFromServer_func LoadMsgFromServer,
1976         RenderView_or_Tail_func RenderView_or_Tail,
1977         View_Cleanup_func ViewCleanup
1978         )
1979 {
1980         RoomRenderer *Handler;
1981
1982         Handler = (RoomRenderer*) malloc(sizeof(RoomRenderer));
1983
1984         Handler->RoomType = RoomType;
1985         Handler->GetParamsGetServerCall = GetParamsGetServerCall;
1986         Handler->PrintPageHeader = PrintPageHeader;
1987         Handler->PrintViewHeader = PrintViewHeader;
1988         Handler->LoadMsgFromServer = LoadMsgFromServer;
1989         Handler->RenderView_or_Tail = RenderView_or_Tail;
1990         Handler->ViewCleanup = ViewCleanup;
1991         Handler->LHParse = LH;
1992
1993         Put(ReadLoopHandler, IKEY(RoomType), Handler, NULL);
1994 }
1995
1996 void
1997 InitModule_MSG
1998 (void)
1999 {
2000         RegisterPreference("use_sig",
2001                            _("Attach signature to email messages?"),
2002                            PRF_YESNO,
2003                            NULL);
2004         RegisterPreference("signature", _("Use this signature:"), PRF_QP_STRING, NULL);
2005         RegisterPreference("default_header_charset",
2006                            _("Default character set for email headers:"),
2007                            PRF_STRING,
2008                            NULL);
2009         RegisterPreference("defaultfrom", _("Preferred email address"), PRF_STRING, NULL);
2010         RegisterPreference("defaultname",
2011                            _("Preferred display name for email messages"),
2012                            PRF_STRING,
2013                            NULL);
2014         RegisterPreference("defaulthandle",
2015                            _("Preferred display name for bulletin board posts"),
2016                            PRF_STRING,
2017                            NULL);
2018         RegisterPreference("mailbox",_("Mailbox view mode"), PRF_STRING, NULL);
2019
2020         WebcitAddUrlHandler(HKEY("readnew"), "", 0, h_readnew, ANONYMOUS|NEED_URL);
2021         WebcitAddUrlHandler(HKEY("readold"), "", 0, h_readold, ANONYMOUS|NEED_URL);
2022         WebcitAddUrlHandler(HKEY("readfwd"), "", 0, h_readfwd, ANONYMOUS|NEED_URL);
2023         WebcitAddUrlHandler(HKEY("headers"), "", 0, h_headers, NEED_URL);
2024         WebcitAddUrlHandler(HKEY("readgt"), "", 0, h_readgt, ANONYMOUS|NEED_URL);
2025         WebcitAddUrlHandler(HKEY("readlt"), "", 0, h_readlt, ANONYMOUS|NEED_URL);
2026         WebcitAddUrlHandler(HKEY("do_search"), "", 0, h_do_search, 0);
2027         WebcitAddUrlHandler(HKEY("display_enter"), "", 0, display_enter, 0);
2028         WebcitAddUrlHandler(HKEY("post"), "", 0, post_message, PROHIBIT_STARTPAGE);
2029         WebcitAddUrlHandler(HKEY("move_msg"), "", 0, move_msg, PROHIBIT_STARTPAGE);
2030         WebcitAddUrlHandler(HKEY("delete_msg"), "", 0, delete_msg, PROHIBIT_STARTPAGE);
2031         WebcitAddUrlHandler(HKEY("msg"), "", 0, embed_message, NEED_URL);
2032         WebcitAddUrlHandler(HKEY("message"), "", 0, handle_one_message, NEED_URL|XHTTP_COMMANDS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
2033         WebcitAddUrlHandler(HKEY("printmsg"), "", 0, print_message, NEED_URL);
2034         WebcitAddUrlHandler(HKEY("msgheaders"), "", 0, display_headers, NEED_URL);
2035
2036         WebcitAddUrlHandler(HKEY("mimepart"), "", 0, view_mimepart, NEED_URL);
2037         WebcitAddUrlHandler(HKEY("mimepart_download"), "", 0, download_mimepart, NEED_URL);
2038         WebcitAddUrlHandler(HKEY("postpart"), "", 0, view_postpart, NEED_URL|PROHIBIT_STARTPAGE);
2039         WebcitAddUrlHandler(HKEY("postpart_download"), "", 0, download_postpart, NEED_URL|PROHIBIT_STARTPAGE);
2040         WebcitAddUrlHandler(HKEY("upload_attachment"), "", 0, upload_attachment, AJAX);
2041         WebcitAddUrlHandler(HKEY("remove_attachment"), "", 0, remove_attachment, AJAX);
2042         WebcitAddUrlHandler(HKEY("show_num_attachments"), "", 0, show_num_attachments, AJAX);
2043
2044         /* json */
2045         WebcitAddUrlHandler(HKEY("roommsgs"), "", 0, jsonMessageList,0);
2046
2047         l_subj = FourHash("subj", 4);
2048         l_wefw = FourHash("wefw", 4);
2049         l_msgn = FourHash("msgn", 4);
2050         l_from = FourHash("from", 4);
2051         l_rcpt = FourHash("rcpt", 4);
2052         l_cccc = FourHash("cccc", 4);
2053         l_replyto = FourHash("rep2", 4);
2054         l_node = FourHash("node", 4);
2055         l_rfca = FourHash("rfca", 4);
2056
2057         return ;
2058 }
2059
2060 void
2061 SessionDetachModule_MSG
2062 (wcsession *sess)
2063 {
2064         DeleteHash(&sess->summ);
2065 }