Merge branch 'master' of ssh://git.citadel.org/appl/gitroot/citadel
[citadel.git] / webcit / messages.c
1 /*
2  * Functions which deal with the fetching and displaying of messages.
3  */
4
5 #include "webcit.h"
6 #include "webserver.h"
7 #include "groupdav.h"
8
9 HashList *MsgHeaderHandler = NULL;
10 HashList *MsgEvaluators = NULL;
11 HashList *MimeRenderHandler = NULL;
12 HashList *ReadLoopHandler = NULL;
13 int dbg_analyze_msg = 0;
14
15 #define SUBJ_COL_WIDTH_PCT              50      /* Mailbox view column width */
16 #define SENDER_COL_WIDTH_PCT            30      /* Mailbox view column width */
17 #define DATE_PLUS_BUTTONS_WIDTH_PCT     20      /* Mailbox view column width */
18
19 void jsonMessageListHdr(void);
20
21 void display_enter(void);
22
23 typedef void (*MsgPartEvaluatorFunc)(message_summary *Sum, StrBuf *Buf);
24
25 typedef struct _MsgPartEvaluatorStruct {
26         MsgPartEvaluatorFunc f;
27 } MsgPartEvaluatorStruct;
28
29 int load_message(message_summary *Msg, 
30                  StrBuf *FoundCharset,
31                  StrBuf **Error)
32 {
33         wcsession *WCC = WC;
34         StrBuf *Buf;
35         StrBuf *HdrToken;
36         headereval *Hdr;
37         void *vHdr;
38         char buf[SIZ];
39         int Done = 0;
40         int state=0;
41         
42         Buf = NewStrBuf();
43         if (Msg->PartNum != NULL) {
44                 serv_printf("MSG4 %ld|%s", Msg->msgnum, ChrPtr(Msg->PartNum));
45         }
46         else {
47                 serv_printf("MSG4 %ld", Msg->msgnum);
48         }
49
50         StrBuf_ServGetln(Buf);
51         if (GetServerStatus(Buf, NULL) != 1) {
52                 *Error = NewStrBuf();
53                 StrBufAppendPrintf(*Error, "<strong>");
54                 StrBufAppendPrintf(*Error, _("ERROR:"));
55                 StrBufAppendPrintf(*Error, "</strong> %s<br />\n", &buf[4]);
56                 FreeStrBuf(&Buf);
57                 return 0;
58         }
59
60         /* begin everythingamundo table */
61         HdrToken = NewStrBuf();
62         while (!Done && StrBuf_ServGetln(Buf)>=0) {
63                 if ( (StrLength(Buf)==3) && 
64                     !strcmp(ChrPtr(Buf), "000")) 
65                 {
66                         Done = 1;
67                         if (state < 2) {
68                                 if (Msg->MsgBody->Data == NULL)
69                                         Msg->MsgBody->Data = NewStrBuf();
70                                 Msg->MsgBody->ContentType = NewStrBufPlain(HKEY("text/html"));
71                                 StrBufAppendPrintf(Msg->MsgBody->Data, "<div><i>");
72                                 StrBufAppendPrintf(Msg->MsgBody->Data, _("Empty message"));
73                                 StrBufAppendPrintf(Msg->MsgBody->Data, "</i><br /><br />\n");
74                                 StrBufAppendPrintf(Msg->MsgBody->Data, "</div>\n");
75                         }
76                         break;
77                 }
78                 switch (state) {
79                 case 0:/* Citadel Message Headers */
80                         if (StrLength(Buf) == 0) {
81                                 state ++;
82                                 break;
83                         }
84                         StrBufExtract_token(HdrToken, Buf, 0, '=');
85                         StrBufCutLeft(Buf, StrLength(HdrToken) + 1);
86                         
87 #ifdef TECH_PREVIEW
88                         if (dbg_analyze_msg) lprintf(1, ":: [%s] = [%s]\n", ChrPtr(HdrToken), ChrPtr(Buf));
89 #endif
90                         /* look up one of the examine_* functions to parse the content */
91                         if (GetHash(MsgHeaderHandler, SKEY(HdrToken), &vHdr) &&
92                             (vHdr != NULL)) {
93                                 Hdr = (headereval*)vHdr;
94                                 Hdr->evaluator(Msg, Buf, FoundCharset);
95                                 if (Hdr->Type == 1) {
96                                         state++;
97                                 }
98                         }/* TODO: 
99                         else LogError(Target, 
100                                       __FUNCTION__,  
101                                       "don't know how to handle message header[%s]\n", 
102                                       ChrPtr(HdrToken));
103                          */
104                         break;
105                 case 1:/* Message Mime Header */
106                         if (StrLength(Buf) == 0) {
107                                 state++;
108                                 if (Msg->MsgBody->ContentType == NULL)
109                                         /* end of header or no header? */
110                                         Msg->MsgBody->ContentType = NewStrBufPlain(HKEY("text/plain"));
111                                  /* usual end of mime header */
112                         }
113                         else
114                         {
115                                 StrBufExtract_token(HdrToken, Buf, 0, ':');
116                                 if (StrLength(HdrToken) > 0) {
117                                         StrBufCutLeft(Buf, StrLength(HdrToken) + 1);
118 #ifdef TECH_PREVIEW
119                                         if (dbg_analyze_msg) lprintf(1, ":: [%s] = [%s]\n", ChrPtr(HdrToken), ChrPtr(Buf));
120 #endif
121                                         /* the examine*'s know how to do with mime headers too... */
122                                         if (GetHash(MsgHeaderHandler, SKEY(HdrToken), &vHdr) &&
123                                             (vHdr != NULL)) {
124                                                 Hdr = (headereval*)vHdr;
125                                                 Hdr->evaluator(Msg, Buf, FoundCharset);
126                                         }
127                                         break;
128                                 }
129                         }
130                 case 2: /* Message Body */
131                         
132                         if (Msg->MsgBody->size_known > 0) {
133                                 StrBuf_ServGetBLOBBuffered(Msg->MsgBody->Data, Msg->MsgBody->length);
134                                 state ++;
135                                 /*/ todo: check next line, if not 000, append following lines */
136                         }
137                         else if (1){
138                                 if (StrLength(Msg->MsgBody->Data) > 0)
139                                         StrBufAppendBufPlain(Msg->MsgBody->Data, "\n", 1, 0);
140                                 StrBufAppendBuf(Msg->MsgBody->Data, Buf, 0);
141                         }
142                         break;
143                 case 3:
144                         StrBufAppendBuf(Msg->MsgBody->Data, Buf, 0);
145                         break;
146                 }
147         }
148
149         if (Msg->AllAttach == NULL)
150                 Msg->AllAttach = NewHash(1,NULL);
151         /* now we put the body mimepart we read above into the mimelist */
152         Put(Msg->AllAttach, SKEY(Msg->MsgBody->PartNum), Msg->MsgBody, DestroyMime);
153         
154         /* Generate a reply-to address */
155         if (StrLength(Msg->Rfca) > 0) {
156                 if (Msg->reply_to == NULL)
157                         Msg->reply_to = NewStrBuf();
158                 if (StrLength(Msg->from) > 0) {
159                         StrBufPrintf(Msg->reply_to, "%s <%s>", ChrPtr(Msg->from), ChrPtr(Msg->Rfca));
160                 }
161                 else {
162                         FlushStrBuf(Msg->reply_to);
163                         StrBufAppendBuf(Msg->reply_to, Msg->Rfca, 0);
164                 }
165         }
166         else 
167         {
168                 if ((StrLength(Msg->OtherNode)>0) && 
169                     (strcasecmp(ChrPtr(Msg->OtherNode), ChrPtr(WCC->serv_info->serv_nodename))) &&
170                     (strcasecmp(ChrPtr(Msg->OtherNode), ChrPtr(WCC->serv_info->serv_humannode)) ))
171                 {
172                         if (Msg->reply_to == NULL)
173                                 Msg->reply_to = NewStrBuf();
174                         StrBufPrintf(Msg->reply_to, 
175                                      "%s @ %s",
176                                      ChrPtr(Msg->from), 
177                                      ChrPtr(Msg->OtherNode));
178                 }
179                 else {
180                         if (Msg->reply_to == NULL)
181                                 Msg->reply_to = NewStrBuf();
182                         FlushStrBuf(Msg->reply_to);
183                         StrBufAppendBuf(Msg->reply_to, Msg->from, 0);
184                 }
185         }
186         FreeStrBuf(&Buf);
187         FreeStrBuf(&HdrToken);
188         return 1;
189 }
190
191
192
193 /*
194  * I wanna SEE that message!
195  *
196  * msgnum               Message number to display
197  * printable_view       Nonzero to display a printable view
198  * section              Optional for encapsulated message/rfc822 submessage
199  */
200 int read_message(StrBuf *Target, const char *tmpl, long tmpllen, long msgnum, const StrBuf *PartNum, const StrBuf **OutMime) 
201 {
202         StrBuf *Buf;
203         StrBuf *FoundCharset;
204         HashPos  *it;
205         void *vMime;
206         message_summary *Msg = NULL;
207         void *vHdr;
208         long len;
209         const char *Key;
210         WCTemplputParams SubTP;
211         StrBuf *Error = NULL;
212
213         Buf = NewStrBuf();
214         FoundCharset = NewStrBuf();
215         Msg = (message_summary *)malloc(sizeof(message_summary));
216         memset(Msg, 0, sizeof(message_summary));
217         Msg->msgnum = msgnum;
218         Msg->PartNum = PartNum;
219         Msg->MsgBody =  (wc_mime_attachment*) malloc(sizeof(wc_mime_attachment));
220         memset(Msg->MsgBody, 0, sizeof(wc_mime_attachment));
221         Msg->MsgBody->msgnum = msgnum;
222
223         if (!load_message(Msg, FoundCharset, &Error)) {
224                 StrBufAppendBuf(Target, Error, 0);
225                 FreeStrBuf(&Error);
226         }
227
228         /* Extract just the content-type (omit attributes such as "charset") */
229         StrBufExtract_token(Buf, Msg->MsgBody->ContentType, 0, ';');
230         StrBufTrim(Buf);
231         StrBufLowerCase(Buf);
232
233         /* Locate a renderer capable of converting this MIME part into HTML */
234         if (GetHash(MimeRenderHandler, SKEY(Buf), &vHdr) &&
235             (vHdr != NULL)) {
236                 RenderMimeFuncStruct *Render;
237                 Render = (RenderMimeFuncStruct*)vHdr;
238                 Render->f(Msg->MsgBody, NULL, FoundCharset);
239         }
240
241         if (StrLength(Msg->reply_references)> 0) {
242                 /* Trim down excessively long lists of thread references.  We eliminate the
243                  * second one in the list so that the thread root remains intact.
244                  */
245                 int rrtok = num_tokens(ChrPtr(Msg->reply_references), '|');
246                 int rrlen = StrLength(Msg->reply_references);
247                 if ( ((rrtok >= 3) && (rrlen > 900)) || (rrtok > 10) ) {
248                         StrBufRemove_token(Msg->reply_references, 1, '|');
249                 }
250         }
251
252         /* now check if we need to translate some mimeparts, and remove the duplicate */
253         it = GetNewHashPos(Msg->AllAttach, 0);
254         while (GetNextHashPos(Msg->AllAttach, it, &len, &Key, &vMime) && 
255                (vMime != NULL)) {
256                 wc_mime_attachment *Mime = (wc_mime_attachment*) vMime;
257                 evaluate_mime_part(Msg, Mime);
258         }
259         DeleteHashPos(&it);
260         memset(&SubTP, 0, sizeof(WCTemplputParams));
261         SubTP.Filter.ContextType = CTX_MAILSUM;
262         SubTP.Context = Msg;
263         *OutMime = DoTemplate(tmpl, tmpllen, Target, &SubTP);
264
265         DestroyMessageSummary(Msg);
266         FreeStrBuf(&FoundCharset);
267         FreeStrBuf(&Buf);
268         return 1;
269 }
270
271
272 void
273 HttpStatus(long CitadelStatus)
274 {
275         long httpstatus = 502;
276         
277         switch (MAJORCODE(CitadelStatus))
278         {
279         case LISTING_FOLLOWS:
280         case CIT_OK:
281                 httpstatus = 201;
282                 break;
283         case ERROR:
284                 switch (MINORCODE(CitadelStatus))
285                 {
286                 case INTERNAL_ERROR:
287                         httpstatus = 403;
288                         break;
289                         
290                 case TOO_BIG:
291                 case ILLEGAL_VALUE:
292                 case HIGHER_ACCESS_REQUIRED:
293                 case MAX_SESSIONS_EXCEEDED:
294                 case RESOURCE_BUSY:
295                 case RESOURCE_NOT_OPEN:
296                 case NOT_HERE:
297                 case INVALID_FLOOR_OPERATION:
298                 case FILE_NOT_FOUND:
299                 case ROOM_NOT_FOUND:
300                         httpstatus = 409;
301                         break;
302
303                 case MESSAGE_NOT_FOUND:
304                 case ALREADY_EXISTS:
305                         httpstatus = 403;
306                         break;
307
308                 case NO_SUCH_SYSTEM:
309                         httpstatus = 502;
310                         break;
311
312                 default:
313                 case CMD_NOT_SUPPORTED:
314                 case PASSWORD_REQUIRED:
315                 case ALREADY_LOGGED_IN:
316                 case USERNAME_REQUIRED:
317                 case NOT_LOGGED_IN:
318                 case SERVER_SHUTTING_DOWN:
319                 case NO_SUCH_USER:
320                 case ASYNC_GEXP:
321                         httpstatus = 502;
322                         break;
323                 }
324                 break;
325
326         default:
327         case BINARY_FOLLOWS:
328         case SEND_BINARY:
329         case START_CHAT_MODE:
330         case ASYNC_MSG:
331         case MORE_DATA:
332         case SEND_LISTING:
333                 httpstatus = 502; /* aeh... whut? */
334                 break;
335         }
336
337
338 }
339
340 /*
341  * Unadorned HTML output of an individual message, suitable
342  * for placing in a hidden iframe, for printing, or whatever
343  */
344 void handle_one_message(void) 
345 {
346         long CitStatus;
347         int CopyMessage = 0;
348         const StrBuf *Destination;
349         void *vLine;
350         const StrBuf *Mime;
351         long msgnum = 0L;
352         wcsession *WCC = WC;
353         const StrBuf *Tmpl;
354         StrBuf *CmdBuf = NULL;
355         const char *pMsg;
356
357
358         pMsg = strchr(ChrPtr(WCC->Hdr->HR.ReqLine), '/');
359         if (pMsg == NULL) {
360                 HttpStatus(CitStatus);
361                 return;
362         }
363
364         msgnum = atol(pMsg + 1);
365         StrBufCutAt(WCC->Hdr->HR.ReqLine, 0, pMsg);
366         gotoroom(WCC->Hdr->HR.ReqLine);
367         switch (WCC->Hdr->HR.eReqType)
368         {
369         case eGET:
370         case ePOST:
371                 Tmpl = sbstr("template");
372                 if (StrLength(Tmpl) > 0) 
373                         read_message(WCC->WBuf, SKEY(Tmpl), msgnum, NULL, &Mime);
374                 else 
375                         read_message(WCC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime);
376                 http_transmit_thing(ChrPtr(Mime), 0);
377                 break;
378         case eDELETE:
379                 CmdBuf = NewStrBuf ();
380                 if ((WCC->CurRoom.RAFlags & UA_ISTRASH) != 0) { /* Delete from Trash is a real delete */
381                         serv_printf("DELE %ld", msgnum);        
382                 }
383                 else {                  /* Otherwise move it to Trash */
384                         serv_printf("MOVE %ld|_TRASH_|0", msgnum);
385                 }
386                 StrBuf_ServGetln(CmdBuf);
387                 FlushStrBuf(WCC->ImportantMsg);
388                 StrBufAppendBuf(WCC->ImportantMsg, CmdBuf, 4);
389                 GetServerStatus(CmdBuf, &CitStatus);
390                 HttpStatus(CitStatus);
391                 break;
392         case eCOPY:
393                 CopyMessage = 1;
394         case eMOVE:
395                 if (GetHash(WCC->Hdr->HTTPHeaders, HKEY("DESTINATION"), &vLine) &&
396                     (vLine!=NULL)) {
397                         Destination = (StrBuf*) vLine;
398                         serv_printf("MOVE %ld|%s|%d", msgnum, ChrPtr(Destination), CopyMessage);
399                         StrBuf_ServGetln(CmdBuf);
400                         FlushStrBuf(WCC->ImportantMsg);
401                         StrBufAppendBuf(WCC->ImportantMsg, CmdBuf, 4);
402                         GetServerStatus(CmdBuf, &CitStatus);
403                         HttpStatus(CitStatus);
404                 }
405                 else
406                         HttpStatus(500);
407                 break;
408         default:
409                 break;
410
411         }
412 }
413
414
415 /*
416  * Unadorned HTML output of an individual message, suitable
417  * for placing in a hidden iframe, for printing, or whatever
418  */
419 void embed_message(void) {
420         const StrBuf *Mime;
421         long msgnum = 0L;
422         wcsession *WCC = WC;
423         const StrBuf *Tmpl;
424         StrBuf *CmdBuf = NULL;
425
426         msgnum = StrBufExtract_long(WCC->Hdr->HR.ReqLine, 0, '/');
427         switch (WCC->Hdr->HR.eReqType)
428         {
429         case eGET:
430         case ePOST:
431                 Tmpl = sbstr("template");
432                 if (StrLength(Tmpl) > 0) 
433                         read_message(WCC->WBuf, SKEY(Tmpl), msgnum, NULL, &Mime);
434                 else 
435                         read_message(WCC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime);
436                 http_transmit_thing(ChrPtr(Mime), 0);
437                 break;
438         case eDELETE:
439                 CmdBuf = NewStrBuf ();
440                 if ((WCC->CurRoom.RAFlags & UA_ISTRASH) != 0) { /* Delete from Trash is a real delete */
441                         serv_printf("DELE %ld", msgnum);        
442                 }
443                 else {                  /* Otherwise move it to Trash */
444                         serv_printf("MOVE %ld|_TRASH_|0", msgnum);
445                 }
446                 StrBuf_ServGetln(CmdBuf);
447                 FlushStrBuf(WCC->ImportantMsg);
448                 StrBufAppendBuf(WCC->ImportantMsg, CmdBuf, 4);
449                 break;
450         default:
451                 break;
452
453         }
454 }
455
456
457 /*
458  * Printable view of a message
459  */
460 void print_message(void) {
461         long msgnum = 0L;
462         const StrBuf *Mime;
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/html\r\n"
468                 "Server: " PACKAGE_STRING "\r\n"
469                 "Connection: close\r\n");
470
471         begin_burst();
472
473         read_message(WC->WBuf, HKEY("view_message_print"), msgnum, NULL, &Mime);
474
475         wDumpContent(0);
476 }
477
478 /* 
479  * Mobile browser view of message
480  */
481 void mobile_message_view(void) 
482 {
483         long msgnum = 0L;
484         const StrBuf *Mime;
485   
486         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
487         output_headers(1, 0, 0, 0, 0, 1);
488         begin_burst();
489         do_template("msgcontrols", NULL);
490         read_message(WC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime);
491         wDumpContent(0);
492 }
493
494 /*
495  * Display a message's headers
496  */
497 void display_headers(void) {
498         long msgnum = 0L;
499         char buf[1024];
500
501         msgnum = StrBufExtract_long(WC->Hdr->HR.ReqLine, 0, '/');
502         output_headers(0, 0, 0, 0, 0, 0);
503
504         hprintf("Content-type: text/plain\r\n"
505                 "Server: %s\r\n"
506                 "Connection: close\r\n",
507                 PACKAGE_STRING);
508         begin_burst();
509
510         serv_printf("MSG2 %ld|3", msgnum);
511         serv_getln(buf, sizeof buf);
512         if (buf[0] == '1') {
513                 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
514                         wc_printf("%s\n", buf);
515                 }
516         }
517
518         wDumpContent(0);
519 }
520
521
522 message_summary *ReadOneMessageSummary(StrBuf *RawMessage, const char *DefaultSubject, long MsgNum) 
523 {
524         void                 *vEval;
525         MsgPartEvaluatorStruct  *Eval;
526         message_summary      *Msg;
527         StrBuf *Buf;
528         const char *buf;
529         const char *ebuf;
530         int nBuf;
531         long len;
532         
533         Buf = NewStrBuf();
534
535         serv_printf("MSG0 %ld|1", MsgNum);      /* ask for headers only */
536         
537         StrBuf_ServGetln(Buf);
538         if (GetServerStatus(Buf, NULL) == 1) {
539                 FreeStrBuf(&Buf);
540                 return NULL;
541         }
542
543         Msg = (message_summary*)malloc(sizeof(message_summary));
544         memset(Msg, 0, sizeof(message_summary));
545         while (len = StrBuf_ServGetln(Buf),
546                ((len != 3)  ||
547                 strcmp(ChrPtr(Buf), "000")== 0)){
548                 buf = ChrPtr(Buf);
549                 ebuf = strchr(ChrPtr(Buf), '=');
550                 nBuf = ebuf - buf;
551                 if (GetHash(MsgEvaluators, buf, nBuf, &vEval) && vEval != NULL) {
552                         Eval = (MsgPartEvaluatorStruct*) vEval;
553                         StrBufCutLeft(Buf, nBuf + 1);
554                         Eval->f(Msg, Buf);
555                 }
556                 else lprintf(1, "Don't know how to handle Message Headerline [%s]", ChrPtr(Buf));
557         }
558         return Msg;
559 }
560
561
562
563
564
565 /*
566  * load message pointers from the server for a "read messages" operation
567  *
568  * servcmd:             the citadel command to send to the citserver
569  */
570 int load_msg_ptrs(const char *servcmd, 
571                   SharedMessageStatus *Stat, 
572                   load_msg_ptrs_detailheaders LH)
573 {
574         wcsession *WCC = WC;
575         message_summary *Msg;
576         StrBuf *Buf, *Buf2;
577         long len;
578         int n;
579         int skipit;
580         const char *Ptr = NULL;
581
582         Stat->lowest_found = LONG_MAX;
583         Stat->highest_found = LONG_MIN;
584
585         if (WCC->summ != NULL) {
586                 DeleteHash(&WCC->summ);
587         }
588         WCC->summ = NewHash(1, Flathash);
589         
590         Buf = NewStrBuf();
591         serv_puts(servcmd);
592         StrBuf_ServGetln(Buf);
593         if (GetServerStatus(Buf, NULL) != 1) {
594                 FreeStrBuf(&Buf);
595                 return (Stat->nummsgs);
596         }
597         Buf2 = NewStrBuf();
598         while (len = StrBuf_ServGetln(Buf), ((len != 3) || strcmp(ChrPtr(Buf), "000")!= 0))
599         {
600                 if (Stat->nummsgs < Stat->maxload) {
601                         skipit = 0;
602                         Ptr = NULL;
603                         Msg = (message_summary*)malloc(sizeof(message_summary));
604                         memset(Msg, 0, sizeof(message_summary));
605
606                         Msg->msgnum = StrBufExtractNext_long(Buf, &Ptr, '|');
607                         Msg->date = StrBufExtractNext_long(Buf, &Ptr, '|');
608
609                         if (Stat->nummsgs == 0) {
610                                 if (Msg->msgnum < Stat->lowest_found) {
611                                         Stat->lowest_found = Msg->msgnum;
612                                 }
613                                 if (Msg->msgnum > Stat->highest_found) {
614                                         Stat->highest_found = Msg->msgnum;
615                                 }
616                         }
617
618                         if ((Msg->msgnum == 0) && (StrLength(Buf) < 32)) {
619                                 free(Msg);
620                                 continue;
621                         }
622
623                         /* 
624                          * as citserver probably gives us messages in forward date sorting
625                          * nummsgs should be the same order as the message date.
626                          */
627                         if (Msg->date == 0) {
628                                 Msg->date = Stat->nummsgs;
629                                 if (StrLength(Buf) < 32) 
630                                         skipit = 1;
631                         }
632                         if ((!skipit) && (LH != NULL)) {
633                                 if (!LH(Buf, &Ptr, Msg, Buf2)){
634                                         free(Msg);
635                                         continue;
636                                 }                                       
637                         }
638                         n = Msg->msgnum;
639                         Put(WCC->summ, (const char *)&n, sizeof(n), Msg, DestroyMessageSummary);
640                 }
641                 Stat->nummsgs++;
642         }
643         FreeStrBuf(&Buf2);
644         FreeStrBuf(&Buf);
645         return (Stat->nummsgs);
646 }
647
648
649
650
651
652 void load_seen_flags(void)
653 {
654         message_summary *Msg;
655         const char *HashKey;
656         long HKLen;
657         HashPos *at;
658         void *vMsg;
659         StrBuf *OldMsg;
660         wcsession *WCC = WC;
661
662         OldMsg = NewStrBuf();
663         serv_puts("GTSN");
664         StrBuf_ServGetln(OldMsg);
665         if (GetServerStatus(OldMsg, NULL) == 2) {
666                 StrBufCutLeft(OldMsg, 4);
667         }
668         else {
669                 FreeStrBuf(&OldMsg);
670                 return;
671         }
672         at = GetNewHashPos(WCC->summ, 0);
673         while (GetNextHashPos(WCC->summ, at, &HKLen, &HashKey, &vMsg)) {
674                 /* Are you a new message, or an old message? */
675                 Msg = (message_summary*) vMsg;
676                 if (is_msg_in_mset(ChrPtr(OldMsg), Msg->msgnum)) {
677                         Msg->is_new = 0;
678                 }
679                 else {
680                         Msg->is_new = 1;
681                 }
682         }
683         FreeStrBuf(&OldMsg);
684         DeleteHashPos(&at);
685 }
686
687 extern readloop_struct rlid[];
688
689 typedef struct _RoomRenderer{
690         int RoomType;
691
692         GetParamsGetServerCall_func GetParamsGetServerCall;
693         PrintViewHeader_func PrintViewHeader;
694         LoadMsgFromServer_func LoadMsgFromServer;
695         RenderView_or_Tail_func RenderView_or_Tail;
696         View_Cleanup_func ViewCleanup;
697         load_msg_ptrs_detailheaders LHParse;
698 } RoomRenderer;
699
700
701 /*
702  * command loop for reading messages
703  *
704  * Set oper to "readnew" or "readold" or "readfwd" or "headers" or "readgt" or "readlt" or "do_search"
705  */
706 void readloop(long oper, eCustomRoomRenderer ForceRenderer)
707 {
708         RoomRenderer *ViewMsg;
709         void *vViewMsg;
710         void *vMsg;
711         message_summary *Msg;
712         char cmd[256] = "";
713         int i, r;
714         wcsession *WCC = WC;
715         HashPos *at;
716         const char *HashKey;
717         long HKLen;
718         WCTemplputParams SubTP;
719         SharedMessageStatus Stat;
720         void *ViewSpecific;
721
722         if (havebstr("is_summary") && (1 == (ibstr("is_summary")))) {
723                 WCC->CurRoom.view = VIEW_MAILBOX;
724         }
725
726         if (havebstr("is_ajax") && (1 == (ibstr("is_ajax")))) {
727                 WCC->is_ajax = 1;
728         }
729
730         if ((oper == do_search) && (WCC->CurRoom.view == VIEW_WIKI)) {
731                 display_wiki_pagelist();
732                 return;
733         }
734
735         memset(&Stat, 0, sizeof(SharedMessageStatus));
736         Stat.maxload = 10000;
737         Stat.lowest_found = (-1);
738         Stat.highest_found = (-1);
739         if (ForceRenderer == eUseDefault)
740                 GetHash(ReadLoopHandler, IKEY(WCC->CurRoom.view), &vViewMsg);
741         else 
742                 GetHash(ReadLoopHandler, IKEY(ForceRenderer), &vViewMsg);
743         if (vViewMsg == NULL) {
744                 WCC->CurRoom.view = VIEW_BBS;
745                 GetHash(ReadLoopHandler, IKEY(WCC->CurRoom.view), &vViewMsg);
746         }
747         if (vViewMsg == NULL) {
748                 return;                 // TODO: print message
749         }
750
751         ViewMsg = (RoomRenderer*) vViewMsg;
752         if (!WCC->is_ajax) {
753                 output_headers(1, 1, 1, 0, 0, 0);
754         } else if (WCC->CurRoom.view == VIEW_MAILBOX) {
755                 jsonMessageListHdr();
756         }
757
758         if (ViewMsg->GetParamsGetServerCall != NULL) {
759                 r = ViewMsg->GetParamsGetServerCall(
760                        &Stat,
761                        &ViewSpecific,
762                        oper,
763                        cmd, sizeof(cmd)
764                 );
765         } else {
766                 r = 0;
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                 Stat.nummsgs = load_msg_ptrs(cmd, &Stat, ViewMsg->LHParse);
782
783         if (Stat.sortit) {
784                 CompareFunc SortIt;
785                 memset(&SubTP, 0, sizeof(WCTemplputParams));
786                 SubTP.Filter.ContextType = CTX_MAILSUM;
787                 SubTP.Context = NULL;
788                 SortIt =  RetrieveSort(&SubTP, NULL, 0,
789                                        HKEY("date"), Stat.defaultsortorder);
790                 if (SortIt != NULL)
791                         SortByPayload(WCC->summ, SortIt);
792         }
793         if (Stat.startmsg < 0) {
794                 Stat.startmsg =  0;
795         }
796
797         if (Stat.load_seen) load_seen_flags();
798         
799         /*
800          * Print any inforation above the message list...
801          */
802         if (ViewMsg->PrintViewHeader != NULL)
803                 ViewMsg->PrintViewHeader(&Stat, &ViewSpecific);
804
805         WCC->startmsg =  Stat.startmsg;
806         WCC->maxmsgs = Stat.maxmsgs;
807         WCC->num_displayed = 0;
808
809         /* Put some helpful data in vars for mailsummary_json */
810         {
811                 StrBuf *Foo;
812                 
813                 Foo = NewStrBuf ();
814                 StrBufPrintf(Foo, "%ld", Stat.nummsgs);
815                 PutBstr(HKEY("__READLOOP:TOTALMSGS"), NewStrBufDup(Foo));
816                 StrBufPrintf(Foo, "%ld", Stat.startmsg);
817                 PutBstr(HKEY("__READLOOP:STARTMSG"), Foo);
818         }
819
820         /*
821          * iterate over each message. if we need to load an attachment, do it here. 
822          */
823
824         if ((ViewMsg->LoadMsgFromServer != NULL) && 
825             (!IsEmptyStr(cmd)))
826         {
827                 at = GetNewHashPos(WCC->summ, 0);
828                 Stat.num_displayed = i = 0;
829                 while ( GetNextHashPos(WCC->summ, at, &HKLen, &HashKey, &vMsg)) {
830                         Msg = (message_summary*) vMsg;          
831                         if ((Msg->msgnum >= Stat.startmsg) && (Stat.num_displayed <= Stat.maxmsgs)) {
832                                 ViewMsg->LoadMsgFromServer(&Stat, &ViewSpecific, Msg, Msg->is_new, i);
833                         } 
834                         i++;
835                 }
836                 DeleteHashPos(&at);
837         }
838
839         /*
840          * Done iterating the message list. now tasks we want to do after.
841          */
842         if (ViewMsg->RenderView_or_Tail != NULL)
843                 ViewMsg->RenderView_or_Tail(&Stat, &ViewSpecific, oper);
844
845         if (ViewMsg->ViewCleanup != NULL)
846                 ViewMsg->ViewCleanup(&ViewSpecific);
847
848         WCC->startmsg = 0;
849         WCC->maxmsgs = 0;
850         if (WCC->summ != NULL) {
851                 DeleteHash(&WCC->summ);
852         }
853 }
854
855
856 /*
857  * Back end for post_message()
858  * ... this is where the actual message gets transmitted to the server.
859  */
860 void post_mime_to_server(void) {
861         wcsession *WCC = WC;
862         char top_boundary[SIZ];
863         char alt_boundary[SIZ];
864         int is_multipart = 0;
865         static int seq = 0;
866         wc_mime_attachment *att;
867         char *encoded;
868         size_t encoded_length;
869         size_t encoded_strlen;
870         char *txtmail = NULL;
871         int include_text_alt = 0;       /* Set to nonzero to include multipart/alternative text/plain */
872
873         sprintf(top_boundary, "Citadel--Multipart--%s--%04x--%04x",
874                 ChrPtr(WCC->serv_info->serv_fqdn),
875                 getpid(),
876                 ++seq
877         );
878         sprintf(alt_boundary, "Citadel--Multipart--%s--%04x--%04x",
879                 ChrPtr(WCC->serv_info->serv_fqdn),
880                 getpid(),
881                 ++seq
882         );
883
884         /* RFC2045 requires this, and some clients look for it... */
885         serv_puts("MIME-Version: 1.0");
886         serv_puts("X-Mailer: " PACKAGE_STRING);
887
888         /* If there are attachments, we have to do multipart/mixed */
889         if (GetCount(WCC->attachments) > 0) {
890                 is_multipart = 1;
891         }
892
893         /* Only do multipart/alternative for mailboxes.  BBS and Wiki rooms don't need it. */
894         if (WC->CurRoom.view == VIEW_MAILBOX) {
895                 include_text_alt = 1;
896         }
897
898         if (is_multipart) {
899                 /* Remember, serv_printf() appends an extra newline */
900                 serv_printf("Content-type: multipart/mixed; boundary=\"%s\"\n", top_boundary);
901                 serv_printf("This is a multipart message in MIME format.\n");
902                 serv_printf("--%s", top_boundary);
903         }
904
905         /* Remember, serv_printf() appends an extra newline */
906         if (include_text_alt) {
907                 serv_printf("Content-type: multipart/alternative; "
908                         "boundary=\"%s\"\n", alt_boundary);
909                 serv_printf("This is a multipart message in MIME format.\n");
910                 serv_printf("--%s", alt_boundary);
911
912                 serv_puts("Content-type: text/plain; charset=utf-8");
913                 serv_puts("Content-Transfer-Encoding: quoted-printable");
914                 serv_puts("");
915                 txtmail = html_to_ascii(bstr("msgtext"), 0, 80, 0);
916                 text_to_server_qp(txtmail);     /* Transmit message in quoted-printable encoding */
917                 free(txtmail);
918
919                 serv_printf("--%s", alt_boundary);
920         }
921
922         serv_puts("Content-type: text/html; charset=utf-8");
923         serv_puts("Content-Transfer-Encoding: quoted-printable");
924         serv_puts("");
925         serv_puts("<html><body>\r\n");
926         text_to_server_qp(bstr("msgtext"));     /* Transmit message in quoted-printable encoding */
927         serv_puts("</body></html>\r\n");
928
929         if (include_text_alt) {
930                 serv_printf("--%s--", alt_boundary);
931         }
932         
933         if (is_multipart) {
934                 long len;
935                 const char *Key; 
936                 void *vAtt;
937                 HashPos  *it;
938
939                 /* Add in the attachments */
940                 it = GetNewHashPos(WCC->attachments, 0);
941                 while (GetNextHashPos(WCC->attachments, it, &len, &Key, &vAtt)) {
942                         att = (wc_mime_attachment *)vAtt;
943                         if (att->length == 0)
944                                 continue;
945                         encoded_length = ((att->length * 150) / 100);
946                         encoded = malloc(encoded_length);
947                         if (encoded == NULL) break;
948                         encoded_strlen = CtdlEncodeBase64(encoded, ChrPtr(att->Data), StrLength(att->Data), 1);
949
950                         serv_printf("--%s", top_boundary);
951                         serv_printf("Content-type: %s", ChrPtr(att->ContentType));
952                         serv_printf("Content-disposition: attachment; filename=\"%s\"", ChrPtr(att->FileName));
953                         serv_puts("Content-transfer-encoding: base64");
954                         serv_puts("");
955                         serv_write(encoded, encoded_strlen);
956                         serv_puts("");
957                         serv_puts("");
958                         free(encoded);
959                 }
960                 serv_printf("--%s--", top_boundary);
961                 DeleteHashPos(&it);
962         }
963
964         serv_puts("000");
965 }
966
967
968 /*
969  * Post message (or don't post message)
970  *
971  * Note regarding the "dont_post" variable:
972  * A random value (actually, it's just a timestamp) is inserted as a hidden
973  * field called "postseq" when the display_enter page is generated.  This
974  * value is checked when posting, using the static variable dont_post.  If a
975  * user attempts to post twice using the same dont_post value, the message is
976  * discarded.  This prevents the accidental double-saving of the same message
977  * if the user happens to click the browser "back" button.
978  */
979 void post_message(void)
980 {
981         StrBuf *UserName;
982         StrBuf *EmailAddress;
983         StrBuf *EncBuf;
984         char buf[1024];
985         StrBuf *encoded_subject = NULL;
986         static long dont_post = (-1L);
987         wc_mime_attachment  *att;
988         int is_anonymous = 0;
989         const StrBuf *display_name = NULL;
990         wcsession *WCC = WC;
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 (WCC->upload_length > 0) {
1006                 const char *pch;
1007                 int n;
1008                 const char *newn;
1009                 long newnlen;
1010                 void *v;
1011
1012                 /* There's an attachment.  Save it to this struct... */
1013                 lprintf(9, "Client is uploading %d bytes\n", WCC->upload_length);
1014                 att = malloc(sizeof(wc_mime_attachment));
1015                 memset(att, 0, sizeof(wc_mime_attachment ));
1016                 att->length = WCC->upload_length;
1017                 att->ContentType = NewStrBufPlain(WCC->upload_content_type, -1);
1018                 att->FileName = NewStrBufDup(WCC->upload_filename);
1019                 
1020                 if (WCC->attachments == NULL) {
1021                         WCC->attachments = NewHash(1, Flathash);
1022                 }
1023
1024                 /* And add it to the list. */
1025                 n = 0;
1026                 if ((GetCount(WCC->attachments) > 0) && 
1027                     GetHashAt(WCC->attachments, 
1028                               GetCount(WCC->attachments) -1, 
1029                               &newnlen, &newn, &v))
1030                     n = *((int*) newn) + 1;
1031                 Put(WCC->attachments, IKEY(n), att, DestroyMime);
1032
1033                 /*
1034                  * Mozilla sends a simple filename, which is what we want,
1035                  * but Satan's Browser sends an entire pathname.  Reduce
1036                  * the path to just a filename if we need to.
1037                  */
1038                 pch = strrchr(ChrPtr(att->FileName), '/');
1039                 if (pch != NULL) {
1040                         StrBufCutLeft(att->FileName, pch - ChrPtr(att->FileName) + 1);
1041                 }
1042                 pch = strrchr(ChrPtr(att->FileName), '\\');
1043                 if (pch != NULL) {
1044                         StrBufCutLeft(att->FileName, pch - ChrPtr(att->FileName) + 1);
1045                 }
1046
1047                 /*
1048                  * Transfer control of this memory from the upload struct
1049                  * to the attachment struct.
1050                  */
1051                 att->Data = WCC->upload;
1052                 WCC->upload = NULL;
1053                 WCC->upload_length = 0;
1054                 display_enter();
1055                 return;
1056         }
1057
1058         if (havebstr("cancel_button")) {
1059                 sprintf(WCC->ImportantMessage, 
1060                         _("Cancelled.  Message was not posted."));
1061         } else if (havebstr("attach_button")) {
1062                 display_enter();
1063                 return;
1064         } else if (lbstr("postseq") == dont_post) {
1065                 sprintf(WCC->ImportantMessage, 
1066                         _("Automatically cancelled because you have already "
1067                           "saved this message."));
1068         } else if (havebstr("remove_attach_button")) {
1069                 /* now thats st00pit. need to find it by name. */
1070                 void *vAtt;
1071                 StrBuf *WhichAttachment;
1072                 HashPos *at;
1073                 long len;
1074                 const char *key;
1075
1076                 WhichAttachment = NewStrBufDup(sbstr("which_attachment"));
1077                 StrBufUnescape(WhichAttachment, 0);
1078                 at = GetNewHashPos(WCC->attachments, 0);
1079                 do {
1080                         GetHashPos(WCC->attachments, at, &len, &key, &vAtt);
1081                 
1082                         att = (wc_mime_attachment*) vAtt;
1083                         if ((att != NULL) && 
1084                             (strcmp(ChrPtr(WhichAttachment), 
1085                                     ChrPtr(att->FileName)   ) == 0))
1086                         {
1087                                 DeleteEntryFromHash(WCC->attachments, at);
1088                                 break;
1089                         }
1090                 }
1091                 while (NextHashPos(WCC->attachments, at));
1092                 FreeStrBuf(&WhichAttachment);
1093                 display_enter();
1094                 return;
1095         } else {
1096                 const char CMD[] = "ENT0 1|%s|%d|4|%s|%s||%s|%s|%s|%s|%s";
1097                 StrBuf *Recp = NULL; 
1098                 StrBuf *Cc = NULL;
1099                 StrBuf *Bcc = NULL;
1100                 const StrBuf *Wikipage = NULL;
1101                 const StrBuf *my_email_addr = NULL;
1102                 StrBuf *CmdBuf = NULL;
1103                 StrBuf *references = NULL;
1104                 int save_to_drafts;
1105                 long HeaderLen;
1106
1107                 save_to_drafts = havebstr("save_button");
1108                 Buf = NewStrBuf();
1109
1110                 if (save_to_drafts) {
1111                         /* temporarily change to the drafts room */
1112                         serv_puts("GOTO _DRAFTS_");
1113                         StrBuf_ServGetln(Buf);
1114                         if (GetServerStatus(Buf, NULL) != 2) {
1115                                 /* You probably don't even have a dumb Drafts folder */
1116                                 StrBufCutLeft(Buf, 4);
1117                                 lprintf(9, "%s:%d: server save to drafts error: %s\n", __FILE__, __LINE__, ChrPtr(Buf));
1118                                 StrBufAppendBufPlain(WCC->ImportantMsg, _("Saved to Drafts failed: "), -1, 0);
1119                                 StrBufAppendBuf(WCC->ImportantMsg, Buf, 0);
1120                                 display_enter();
1121                                 FreeStrBuf(&Buf);
1122                                 return;
1123                         }
1124                 }
1125
1126                 if (havebstr("references"))
1127                 {
1128                         const StrBuf *ref = sbstr("references");
1129                         references = NewStrBufDup(ref);
1130                         if (*ChrPtr(references) == '|') {       /* remove leading '|' if present */
1131                                 StrBufCutLeft(references, 1);
1132                         }
1133                         StrBufReplaceChars(references, '|', '!');
1134                 }
1135                 if (havebstr("subject")) {
1136                         const StrBuf *Subj;
1137                         /*
1138                          * make enough room for the encoded string; 
1139                          * plus the QP header 
1140                          */
1141                         Subj = sbstr("subject");
1142                         
1143                         StrBufRFC2047encode(&encoded_subject, Subj);
1144                 }
1145                 UserName = NewStrBuf();
1146                 EmailAddress = NewStrBuf();
1147                 EncBuf = NewStrBuf();
1148
1149                 Recp = StrBufSanitizeEmailRecipientVector(sbstr("recp"), UserName, EmailAddress, EncBuf);
1150                 Cc = StrBufSanitizeEmailRecipientVector(sbstr("cc"), UserName, EmailAddress, EncBuf);
1151                 Bcc = StrBufSanitizeEmailRecipientVector(sbstr("bcc"), UserName, EmailAddress, EncBuf);
1152
1153                 FreeStrBuf(&UserName);
1154                 FreeStrBuf(&EmailAddress);
1155                 FreeStrBuf(&EncBuf);
1156
1157                 Wikipage = sbstr("page");
1158                 my_email_addr = sbstr("my_email_addr");
1159                 
1160                 HeaderLen = StrLength(Recp) + 
1161                         StrLength(encoded_subject) +
1162                         StrLength(Cc) +
1163                         StrLength(Bcc) + 
1164                         StrLength(Wikipage) +
1165                         StrLength(my_email_addr) + 
1166                         StrLength(references);
1167                 CmdBuf = NewStrBufPlain(NULL, sizeof (CMD) + HeaderLen);
1168                 StrBufPrintf(CmdBuf, 
1169                              CMD,
1170                              save_to_drafts?"":ChrPtr(Recp),
1171                              is_anonymous,
1172                              ChrPtr(encoded_subject),
1173                              ChrPtr(display_name),
1174                              save_to_drafts?"":ChrPtr(Cc),
1175                              save_to_drafts?"":ChrPtr(Bcc),
1176                              ChrPtr(Wikipage),
1177                              ChrPtr(my_email_addr),
1178                              ChrPtr(references));
1179                 FreeStrBuf(&references);
1180                 FreeStrBuf(&encoded_subject);
1181
1182                 if ((HeaderLen + StrLength(sbstr("msgtext")) < 10) && 
1183                     (GetCount(WCC->attachments) == 0)){
1184                         StrBufAppendBufPlain(WCC->ImportantMsg, _("Refusing to post empty message.\n"), -1, 0);
1185                         FreeStrBuf(&CmdBuf);
1186                                 
1187                 }
1188                 else 
1189                 {
1190                         lprintf(9, "%s\n", ChrPtr(CmdBuf));
1191                         serv_puts(ChrPtr(CmdBuf));
1192                         FreeStrBuf(&CmdBuf);
1193
1194                         StrBuf_ServGetln(Buf);
1195                         if (GetServerStatus(Buf, NULL) == 4) {
1196                                 if (save_to_drafts) {
1197                                         if (  (havebstr("recp"))
1198                                               || (havebstr("cc"  ))
1199                                               || (havebstr("bcc" )) ) {
1200                                                 /* save recipient headers or room to post to */
1201                                                 serv_printf("To: %s", ChrPtr(Recp));
1202                                                 serv_printf("Cc: %s", ChrPtr(Cc));
1203                                                 serv_printf("Bcc: %s", ChrPtr(Bcc));
1204                                         } else {
1205                                                 serv_printf("X-Citadel-Room: %s", ChrPtr(WC->CurRoom.name));
1206                                         }
1207                                 }
1208                                 post_mime_to_server();
1209                                 if (save_to_drafts) {
1210                                         StrBufAppendBufPlain(WCC->ImportantMsg, _("Message has been saved to Drafts.\n"), -1, 0);
1211                                         gotoroom(WCC->CurRoom.name);
1212                                         display_enter();
1213                                         FreeStrBuf(&Buf);
1214                                         return;
1215                                 } else if (  (havebstr("recp"))
1216                                              || (havebstr("cc"  ))
1217                                              || (havebstr("bcc" ))
1218                                         ) {
1219                                         StrBufAppendBufPlain(WCC->ImportantMsg, _("Message has been sent.\n"), -1, 0);
1220                                 }
1221                                 else {
1222                                         StrBufAppendBufPlain(WCC->ImportantMsg, _("Message has been posted.\n"), -1, 0);
1223                                 }
1224                                 dont_post = lbstr("postseq");
1225                         } else {
1226                                 StrBufCutLeft(Buf, 4);
1227
1228                                 lprintf(9, "%s:%d: server post error: %s\n", __FILE__, __LINE__, ChrPtr(Buf));
1229                                 StrBufAppendBuf(WCC->ImportantMsg, Buf, 0);
1230                                 if (save_to_drafts) gotoroom(WCC->CurRoom.name);
1231                                 display_enter();
1232                                 FreeStrBuf(&Buf);
1233                                 FreeStrBuf(&Cc);
1234                                 FreeStrBuf(&Bcc);
1235                                 return;
1236                         }
1237                 }
1238                 FreeStrBuf(&Buf);
1239                 FreeStrBuf(&Cc);
1240                 FreeStrBuf(&Bcc);
1241         }
1242
1243         DeleteHash(&WCC->attachments);
1244
1245         /*
1246          *  We may have been supplied with instructions regarding the location
1247          *  to which we must return after posting.  If found, go there.
1248          */
1249         if (havebstr("return_to")) {
1250                 http_redirect(bstr("return_to"));
1251         }
1252         /*
1253          *  If we were editing a page in a wiki room, go to that page now.
1254          */
1255         else if (havebstr("page")) {
1256                 snprintf(buf, sizeof buf, "wiki?page=%s", bstr("page"));
1257                 http_redirect(buf);
1258         }
1259         /*
1260          *  Otherwise, just go to the "read messages" loop.
1261          */
1262         else {
1263                 readloop(readnew, eUseDefault);
1264         }
1265 }
1266
1267
1268
1269
1270 /*
1271  * display the message entry screen
1272  */
1273 void display_enter(void)
1274 {
1275         char buf[SIZ];
1276         long now;
1277         const StrBuf *display_name = NULL;
1278         int recipient_required = 0;
1279         int subject_required = 0;
1280         int recipient_bad = 0;
1281         int is_anonymous = 0;
1282         wcsession *WCC = WC;
1283
1284         now = time(NULL);
1285
1286         if (havebstr("force_room")) {
1287                 gotoroom(sbstr("force_room"));
1288         }
1289
1290         display_name = sbstr("display_name");
1291         if (!strcmp(ChrPtr(display_name), "__ANONYMOUS__")) {
1292                 display_name = NULL;
1293                 is_anonymous = 1;
1294         }
1295
1296         /* First test to see whether this is a room that requires recipients to be entered */
1297         serv_puts("ENT0 0");
1298         serv_getln(buf, sizeof buf);
1299
1300         if (!strncmp(buf, "570", 3)) {          /* 570 means that we need a recipient here */
1301                 recipient_required = 1;
1302         }
1303         else if (buf[0] != '2') {               /* Any other error means that we cannot continue */
1304                 sprintf(WCC->ImportantMessage, "%s", &buf[4]);
1305                 readloop(readnew, eUseDefault);
1306                 return;
1307         }
1308
1309         /* Is the server strongly recommending that the user enter a message subject? */
1310         if ((buf[3] != '\0') && (buf[4] != '\0')) {
1311                 subject_required = extract_int(&buf[4], 1);
1312         }
1313
1314         /*
1315          * Are we perhaps in an address book view?  If so, then an "enter
1316          * message" command really means "add new entry."
1317          */
1318         if (WCC->CurRoom.defview == VIEW_ADDRESSBOOK) {
1319                 do_edit_vcard(-1, "", NULL, NULL, "",  ChrPtr(WCC->CurRoom.name));
1320                 return;
1321         }
1322
1323         /*
1324          * Are we perhaps in a calendar room?  If so, then an "enter
1325          * message" command really means "add new calendar item."
1326          */
1327         if (WCC->CurRoom.defview == VIEW_CALENDAR) {
1328                 display_edit_event();
1329                 return;
1330         }
1331
1332         /*
1333          * Are we perhaps in a tasks view?  If so, then an "enter
1334          * message" command really means "add new task."
1335          */
1336         if (WCC->CurRoom.defview == VIEW_TASKS) {
1337                 display_edit_task();
1338                 return;
1339         }
1340
1341         /*
1342          * Otherwise proceed normally.
1343          * Do a custom room banner with no navbar...
1344          */
1345
1346         if (recipient_required) {
1347                 const StrBuf *Recp = NULL; 
1348                 const StrBuf *Cc = NULL;
1349                 const StrBuf *Bcc = NULL;
1350                 const StrBuf *Wikipage = NULL;
1351                 StrBuf *CmdBuf = NULL;
1352                 const char CMD[] = "ENT0 0|%s|%d|0||%s||%s|%s|%s";
1353                 
1354                 Recp = sbstr("recp");
1355                 Cc = sbstr("cc");
1356                 Bcc = sbstr("bcc");
1357                 Wikipage = sbstr("page");
1358                 
1359                 CmdBuf = NewStrBufPlain(NULL, 
1360                                         sizeof (CMD) + 
1361                                         StrLength(Recp) + 
1362                                         StrLength(display_name) +
1363                                         StrLength(Cc) +
1364                                         StrLength(Bcc) + 
1365                                         StrLength(Wikipage));
1366
1367                 StrBufPrintf(CmdBuf, 
1368                              CMD,
1369                              ChrPtr(Recp), 
1370                              is_anonymous,
1371                              ChrPtr(display_name),
1372                              ChrPtr(Cc), 
1373                              ChrPtr(Bcc), 
1374                              ChrPtr(Wikipage));
1375                 serv_puts(ChrPtr(CmdBuf));
1376                 serv_getln(buf, sizeof buf);
1377                 FreeStrBuf(&CmdBuf);
1378
1379                 if (!strncmp(buf, "570", 3)) {  /* 570 means we have an invalid recipient listed */
1380                         if (havebstr("recp") && 
1381                             havebstr("cc"  ) && 
1382                             havebstr("bcc" )) {
1383                                 recipient_bad = 1;
1384                         }
1385                 }
1386                 else if (buf[0] != '2') {       /* Any other error means that we cannot continue */
1387                         wc_printf("<em>%s</em><br />\n", &buf[4]);      /* TODO -> important message */
1388                         return;
1389                 }
1390         }
1391         if (recipient_required)
1392                 PutBstr(HKEY("__RCPTREQUIRED"), NewStrBufPlain(HKEY("1")));
1393         if (recipient_required || subject_required)
1394                 PutBstr(HKEY("__SUBJREQUIRED"), NewStrBufPlain(HKEY("1")));
1395
1396         begin_burst();
1397         output_headers(1, 0, 0, 0, 1, 0);
1398         DoTemplate(HKEY("edit_message"), NULL, &NoCtx);
1399         end_burst();
1400
1401         return;
1402 }
1403
1404 /*
1405  * delete a message
1406  */
1407 void delete_msg(void)
1408 {
1409         long msgid;
1410         char buf[SIZ];
1411
1412         msgid = lbstr("msgid");
1413
1414         if ((WC->CurRoom.RAFlags & UA_ISTRASH) != 0) {  /* Delete from Trash is a real delete */
1415                 serv_printf("DELE %ld", msgid); 
1416         }
1417         else {                  /* Otherwise move it to Trash */
1418                 serv_printf("MOVE %ld|_TRASH_|0", msgid);
1419         }
1420
1421         serv_getln(buf, sizeof buf);
1422         sprintf(WC->ImportantMessage, "%s", &buf[4]);
1423         readloop(readnew, eUseDefault);
1424 }
1425
1426
1427 /*
1428  * move a message to another room
1429  */
1430 void move_msg(void)
1431 {
1432         long msgid;
1433         char buf[SIZ];
1434
1435         msgid = lbstr("msgid");
1436
1437         if (havebstr("move_button")) {
1438                 sprintf(buf, "MOVE %ld|%s", msgid, bstr("target_room"));
1439                 serv_puts(buf);
1440                 serv_getln(buf, sizeof buf);
1441                 sprintf(WC->ImportantMessage, "%s", &buf[4]);
1442         } else {
1443                 sprintf(WC->ImportantMessage, (_("The message was not moved.")));
1444         }
1445
1446         readloop(readnew, eUseDefault);
1447 }
1448
1449
1450 /*
1451  * Confirm move of a message
1452  */
1453 void confirm_move_msg(void)
1454 {
1455         long msgid;
1456         char buf[SIZ];
1457         char targ[SIZ];
1458
1459         msgid = lbstr("msgid");
1460
1461
1462         output_headers(1, 1, 2, 0, 0, 0);
1463         wc_printf("<div id=\"banner\">\n");
1464         wc_printf("<h1>");
1465         wc_printf(_("Confirm move of message"));
1466         wc_printf("</h1>");
1467         wc_printf("</div>\n");
1468
1469         wc_printf("<div id=\"content\" class=\"service\">\n");
1470
1471         wc_printf("<CENTER>");
1472
1473         wc_printf(_("Move this message to:"));
1474         wc_printf("<br />\n");
1475
1476         wc_printf("<form METHOD=\"POST\" action=\"move_msg\">\n");
1477         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
1478         wc_printf("<INPUT TYPE=\"hidden\" NAME=\"msgid\" VALUE=\"%s\">\n", bstr("msgid"));
1479
1480         wc_printf("<SELECT NAME=\"target_room\" SIZE=5>\n");
1481         serv_puts("LKRA");
1482         serv_getln(buf, sizeof buf);
1483         if (buf[0] == '1') {
1484                 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
1485                         extract_token(targ, buf, 0, '|', sizeof targ);
1486                         wc_printf("<OPTION>");
1487                         escputs(targ);
1488                         wc_printf("\n");
1489                 }
1490         }
1491         wc_printf("</SELECT>\n");
1492         wc_printf("<br />\n");
1493
1494         wc_printf("<INPUT TYPE=\"submit\" NAME=\"move_button\" VALUE=\"%s\">", _("Move"));
1495         wc_printf("&nbsp;");
1496         wc_printf("<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">", _("Cancel"));
1497         wc_printf("</form></CENTER>\n");
1498
1499         wc_printf("</CENTER>\n");
1500         wDumpContent(1);
1501 }
1502
1503
1504 /*
1505  * Generic function to output an arbitrary MIME attachment from
1506  * message being composed
1507  *
1508  * partnum              The MIME part to be output
1509  * filename             Fake filename to give
1510  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
1511  */
1512 void postpart(StrBuf *partnum, StrBuf *filename, int force_download)
1513 {
1514         void *vPart;
1515         StrBuf *content_type;
1516         wc_mime_attachment *part;
1517         int i;
1518
1519         i = StrToi(partnum);
1520         if (GetHash(WC->attachments, IKEY(i), &vPart) &&
1521             (vPart != NULL)) {
1522                 part = (wc_mime_attachment*) vPart;
1523                 if (force_download) {
1524                         content_type = NewStrBufPlain(HKEY("application/octet-stream"));
1525                 }
1526                 else {
1527                         content_type = NewStrBufDup(part->ContentType);
1528                 }
1529                 StrBufAppendBuf(WC->WBuf, part->Data, 0);
1530                 http_transmit_thing(ChrPtr(content_type), 0);
1531         } else {
1532                 hprintf("HTTP/1.1 404 %s\n", ChrPtr(partnum));
1533                 output_headers(0, 0, 0, 0, 0, 0);
1534                 hprintf("Content-Type: text/plain\r\n");
1535                 begin_burst();
1536                 wc_printf(_("An error occurred while retrieving this part: %s/%s\n"), 
1537                         ChrPtr(partnum), ChrPtr(filename));
1538                 end_burst();
1539         }
1540         FreeStrBuf(&content_type);
1541 }
1542
1543
1544 /*
1545  * Generic function to output an arbitrary MIME part from an arbitrary
1546  * message number on the server.
1547  *
1548  * msgnum               Number of the item on the citadel server
1549  * partnum              The MIME part to be output
1550  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
1551  */
1552 void mimepart(int force_download)
1553 {
1554         long msgnum;
1555         StrBuf *att;
1556         wcsession *WCC = WC;
1557         StrBuf *Buf;
1558         off_t bytes;
1559         StrBuf *ContentType = NewStrBufPlain(HKEY("application/octet-stream"));
1560         const char *CT;
1561
1562         att = Buf = NewStrBuf();
1563         msgnum = StrBufExtract_long(WCC->Hdr->HR.ReqLine, 0, '/');
1564         StrBufExtract_token(att, WCC->Hdr->HR.ReqLine, 1, '/');
1565
1566         serv_printf("OPNA %ld|%s", msgnum, ChrPtr(att));
1567         StrBuf_ServGetln(Buf);
1568         if (GetServerStatus(Buf, NULL) == 2) {
1569                 StrBufCutLeft(Buf, 4);
1570                 bytes = StrBufExtract_long(Buf, 0, '|');
1571                 if (!force_download) {
1572                         StrBufExtract_token(ContentType, Buf, 3, '|');
1573                 }
1574
1575                 serv_read_binary(WCC->WBuf, bytes, Buf);
1576                 serv_puts("CLOS");
1577                 StrBuf_ServGetln(Buf);
1578                 CT = ChrPtr(ContentType);
1579
1580                 if (!force_download) {
1581                         if (!strcasecmp(ChrPtr(ContentType), "application/octet-stream")) {
1582                                 StrBufExtract_token(Buf, WCC->Hdr->HR.ReqLine, 2, '/');
1583                                 CT = GuessMimeByFilename(SKEY(Buf));
1584                         }
1585                         if (!strcasecmp(ChrPtr(ContentType), "application/octet-stream")) {
1586                                 CT = GuessMimeType(SKEY(WCC->WBuf));
1587                         }
1588                 }
1589                 http_transmit_thing(CT, 0);
1590         } else {
1591                 StrBufCutLeft(Buf, 4);
1592                 hprintf("HTTP/1.1 404 %s\n", ChrPtr(Buf));
1593                 output_headers(0, 0, 0, 0, 0, 0);
1594                 hprintf("Content-Type: text/plain\r\n");
1595                 begin_burst();
1596                 wc_printf(_("An error occurred while retrieving this part: %s\n"), 
1597                         ChrPtr(Buf));
1598                 end_burst();
1599         }
1600         FreeStrBuf(&ContentType);
1601         FreeStrBuf(&Buf);
1602 }
1603
1604
1605 /*
1606  * Read any MIME part of a message, from the server, into memory.
1607  */
1608 StrBuf *load_mimepart(long msgnum, char *partnum)
1609 {
1610         off_t bytes;
1611         StrBuf *Buf;
1612         
1613         Buf = NewStrBuf();
1614         serv_printf("DLAT %ld|%s", msgnum, partnum);
1615         StrBuf_ServGetln(Buf);
1616         if (GetServerStatus(Buf, NULL) == 6) {
1617                 StrBufCutLeft(Buf, 4);
1618                 bytes = StrBufExtract_long(Buf, 0, '|');
1619                 FreeStrBuf(&Buf);
1620                 Buf = NewStrBuf();
1621                 StrBuf_ServGetBLOBBuffered(Buf, bytes);
1622                 return(Buf);
1623         }
1624         else {
1625                 FreeStrBuf(&Buf);
1626                 return(NULL);
1627         }
1628 }
1629
1630 /*
1631  * Read any MIME part of a message, from the server, into memory.
1632  */
1633 void MimeLoadData(wc_mime_attachment *Mime)
1634 {
1635         StrBuf *Buf;
1636         const char *Ptr;
1637         off_t bytes;
1638         /* TODO: is there a chance the content type is different from the one we know? */
1639
1640         serv_printf("DLAT %ld|%s", Mime->msgnum, ChrPtr(Mime->PartNum));
1641         Buf = NewStrBuf();
1642         StrBuf_ServGetln(Buf);
1643         if (GetServerStatus(Buf, NULL) == 6) {
1644                 Ptr = &(ChrPtr(Buf)[4]);
1645                 bytes = StrBufExtractNext_long(Buf, &Ptr, '|');
1646                 StrBufSkip_NTokenS(Buf, &Ptr, '|', 3);  /* filename, cbtype, mimetype */
1647                 if (Mime->Charset == NULL) Mime->Charset = NewStrBuf();
1648                 StrBufExtract_NextToken(Mime->Charset, Buf, &Ptr, '|');
1649                 
1650                 if (Mime->Data == NULL)
1651                         Mime->Data = NewStrBufPlain(NULL, bytes);
1652                 StrBuf_ServGetBLOBBuffered(Mime->Data, bytes);
1653         }
1654         else {
1655                 FlushStrBuf(Mime->Data);
1656                 /* TODO XImportant message */
1657         }
1658         FreeStrBuf(&Buf);
1659 }
1660
1661
1662
1663
1664 void view_mimepart(void) {
1665         mimepart(0);
1666 }
1667
1668 void download_mimepart(void) {
1669         mimepart(1);
1670 }
1671
1672 void view_postpart(void) {
1673         StrBuf *filename = NewStrBuf();
1674         StrBuf *partnum = NewStrBuf();
1675
1676         StrBufExtract_token(partnum, WC->Hdr->HR.ReqLine, 0, '/');
1677         StrBufExtract_token(filename, WC->Hdr->HR.ReqLine, 1, '/');
1678
1679         postpart(partnum, filename, 0);
1680
1681         FreeStrBuf(&filename);
1682         FreeStrBuf(&partnum);
1683 }
1684
1685 void download_postpart(void) {
1686         StrBuf *filename = NewStrBuf();
1687         StrBuf *partnum = NewStrBuf();
1688
1689         StrBufExtract_token(partnum, WC->Hdr->HR.ReqLine, 0, '/');
1690         StrBufExtract_token(filename, WC->Hdr->HR.ReqLine, 1, '/');
1691
1692         postpart(partnum, filename, 1);
1693
1694         FreeStrBuf(&filename);
1695         FreeStrBuf(&partnum);
1696 }
1697
1698 void h_readnew(void) { readloop(readnew, eUseDefault);}
1699 void h_readold(void) { readloop(readold, eUseDefault);}
1700 void h_readfwd(void) { readloop(readfwd, eUseDefault);}
1701 void h_headers(void) { readloop(headers, eUseDefault);}
1702 void h_do_search(void) { readloop(do_search, eUseDefault);}
1703 void h_readgt(void) { readloop(readgt, eUseDefault);}
1704 void h_readlt(void) { readloop(readlt, eUseDefault);}
1705
1706 void jsonMessageListHdr(void) 
1707 {
1708         /* TODO: make a generic function */
1709         hprintf("HTTP/1.1 200 OK\r\n");
1710         hprintf("Content-type: application/json; charset=utf-8\r\n");
1711         hprintf("Server: %s / %s\r\n", PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software));
1712         hprintf("Connection: close\r\n");
1713         hprintf("Pragma: no-cache\r\nCache-Control: no-store\r\nExpires:-1\r\n");
1714         begin_burst();
1715 }
1716
1717
1718 /* Output message list in JSON format */
1719 void jsonMessageList(void) {
1720         const StrBuf *room = sbstr("room");
1721         long oper = (havebstr("query")) ? do_search : readnew;
1722         WC->is_ajax = 1; 
1723         gotoroom(room);
1724         readloop(oper, eUseDefault);
1725         WC->is_ajax = 0;
1726 }
1727
1728 void RegisterReadLoopHandlerset(
1729         int RoomType,
1730         GetParamsGetServerCall_func GetParamsGetServerCall,
1731         PrintViewHeader_func PrintViewHeader,
1732         load_msg_ptrs_detailheaders LH,
1733         LoadMsgFromServer_func LoadMsgFromServer,
1734         RenderView_or_Tail_func RenderView_or_Tail,
1735         View_Cleanup_func ViewCleanup
1736         )
1737 {
1738         RoomRenderer *Handler;
1739
1740         Handler = (RoomRenderer*) malloc(sizeof(RoomRenderer));
1741
1742         Handler->RoomType = RoomType;
1743         Handler->GetParamsGetServerCall = GetParamsGetServerCall;
1744         Handler->PrintViewHeader = PrintViewHeader;
1745         Handler->LoadMsgFromServer = LoadMsgFromServer;
1746         Handler->RenderView_or_Tail = RenderView_or_Tail;
1747         Handler->ViewCleanup = ViewCleanup;
1748         Handler->LHParse = LH;
1749
1750         Put(ReadLoopHandler, IKEY(RoomType), Handler, NULL);
1751 }
1752
1753 void 
1754 InitModule_MSG
1755 (void)
1756 {
1757         RegisterPreference("use_sig",
1758                            _("Attach signature to email messages?"), 
1759                            PRF_YESNO, 
1760                            NULL);
1761         RegisterPreference("signature", _("Use this signature:"), PRF_QP_STRING, NULL);
1762         RegisterPreference("default_header_charset", 
1763                            _("Default character set for email headers:"), 
1764                            PRF_STRING, 
1765                            NULL);
1766         RegisterPreference("defaultfrom", _("Preferred email address"), PRF_STRING, NULL);
1767         RegisterPreference("defaultname", 
1768                            _("Preferred display name for email messages"), 
1769                            PRF_STRING, 
1770                            NULL);
1771         RegisterPreference("defaulthandle", 
1772                            _("Preferred display name for bulletin board posts"), 
1773                            PRF_STRING, 
1774                            NULL);
1775         RegisterPreference("mailbox",_("Mailbox view mode"), PRF_STRING, NULL);
1776
1777         WebcitAddUrlHandler(HKEY("readnew"), "", 0, h_readnew, ANONYMOUS|NEED_URL);
1778         WebcitAddUrlHandler(HKEY("readold"), "", 0, h_readold, ANONYMOUS|NEED_URL);
1779         WebcitAddUrlHandler(HKEY("readfwd"), "", 0, h_readfwd, ANONYMOUS|NEED_URL);
1780         WebcitAddUrlHandler(HKEY("headers"), "", 0, h_headers, NEED_URL);
1781         WebcitAddUrlHandler(HKEY("readgt"), "", 0, h_readgt, ANONYMOUS|NEED_URL);
1782         WebcitAddUrlHandler(HKEY("readlt"), "", 0, h_readlt, ANONYMOUS|NEED_URL);
1783         WebcitAddUrlHandler(HKEY("do_search"), "", 0, h_do_search, 0);
1784         WebcitAddUrlHandler(HKEY("display_enter"), "", 0, display_enter, 0);
1785         WebcitAddUrlHandler(HKEY("post"), "", 0, post_message, PROHIBIT_STARTPAGE);
1786         WebcitAddUrlHandler(HKEY("move_msg"), "", 0, move_msg, PROHIBIT_STARTPAGE);
1787         WebcitAddUrlHandler(HKEY("delete_msg"), "", 0, delete_msg, PROHIBIT_STARTPAGE);
1788         WebcitAddUrlHandler(HKEY("confirm_move_msg"), "", 0, confirm_move_msg, PROHIBIT_STARTPAGE);
1789         WebcitAddUrlHandler(HKEY("msg"), "", 0, embed_message, NEED_URL);
1790         WebcitAddUrlHandler(HKEY("message"), "", 0, handle_one_message, NEED_URL|XHTTP_COMMANDS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1791         WebcitAddUrlHandler(HKEY("printmsg"), "", 0, print_message, NEED_URL);
1792         WebcitAddUrlHandler(HKEY("mobilemsg"), "", 0, mobile_message_view, NEED_URL);
1793         WebcitAddUrlHandler(HKEY("msgheaders"), "", 0, display_headers, NEED_URL);
1794
1795         WebcitAddUrlHandler(HKEY("mimepart"), "", 0, view_mimepart, NEED_URL);
1796         WebcitAddUrlHandler(HKEY("mimepart_download"), "", 0, download_mimepart, NEED_URL);
1797         WebcitAddUrlHandler(HKEY("postpart"), "", 0, view_postpart, NEED_URL|PROHIBIT_STARTPAGE);
1798         WebcitAddUrlHandler(HKEY("postpart_download"), "", 0, download_postpart, NEED_URL|PROHIBIT_STARTPAGE);
1799
1800         /* json */
1801         WebcitAddUrlHandler(HKEY("roommsgs"), "", 0, jsonMessageList,0);
1802         return ;
1803 }
1804
1805 void
1806 SessionDetachModule_MSG
1807 (wcsession *sess)
1808 {
1809         DeleteHash(&sess->summ);
1810 }