4 * Copyright (c) 1996-2018 by the citadel.org team
6 * This program is open source software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 3.
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.
19 * Return a "zero-terminated" array of message numbers in the current room.
20 * Caller owns the memory and must free it. Returns NULL if any problems.
22 long *get_msglist(struct ctdlsession *c, char *which_msgs)
29 ctdl_printf(c, "MSGS %s", which_msgs);
30 ctdl_readline(c, buf, sizeof(buf));
33 if (num_msgs >= num_alloc) {
36 msglist = malloc(num_alloc * sizeof(long));
40 msglist = realloc(msglist, num_alloc * sizeof(long));
43 ctdl_readline(c, buf, sizeof(buf));
44 msglist[num_msgs++] = atol(buf);
45 } while (strcmp(buf, "000")); // this makes the last element a "0" terminator
51 * Supplied with a list of potential matches from an If-Match: or If-None-Match: header, and
52 * a message number (which we always use as the entity tag in Citadel), return nonzero if the
53 * message number matches any of the supplied tags in the string.
55 int match_etags(char *taglist, long msgnum)
57 int num_tags = num_tokens(taglist, ',');
61 if (msgnum <= 0) { // no msgnum? no match.
65 for (i=0; i<num_tags; ++i) {
66 extract_token(tag, taglist, i, ',', sizeof tag);
68 char *lq = (strchr(tag, '"'));
69 char *rq = (strrchr(tag, '"'));
70 if (lq < rq) { // has two double quotes
75 if (!strcmp(tag, "*")) {
76 return(1); // wildcard match
78 long tagmsgnum = atol(tag);
79 if ( (tagmsgnum > 0) && (tagmsgnum == msgnum) ) { // match
84 return(0); // no match
89 * Client is requesting a message list
91 void json_msglist(struct http_transaction *h, struct ctdlsession *c, char *which)
94 long *msglist = get_msglist(c, which);
95 JsonValue *j = NewJsonArray(HKEY("msgs"));
97 if (msglist != NULL) {
98 for (i=0; msglist[i]>0 ; ++i) {
99 JsonArrayAppend(j, NewJsonNumber( HKEY("m"), msglist[i]));
104 StrBuf *sj = NewStrBuf();
105 SerializeJson(sj, j, 1); // '1' == free the source array
107 add_response_header(h, strdup("Content-type"), strdup("application/json"));
108 h->response_code = 200;
109 h->response_string = strdup("OK");
110 h->response_body_length = StrLength(sj);
111 h->response_body = SmashStrBuf(&sj);
119 * Client requested an object in a room.
121 void object_in_room(struct http_transaction *h, struct ctdlsession *c)
125 char unescaped_euid[1024];
127 extract_token(buf, h->uri, 4, '/', sizeof buf);
129 if (!strncasecmp(buf, "msgs.", 5)) { // Client is requesting a list of message numbers
130 json_msglist(h, c, &buf[5]);
134 if (!strncasecmp(buf, "threads", 5)) { // Client is requesting a threaded view (still kind of fuzzy here)
135 threaded_view(h, c, &buf[5]);
139 if (!strncasecmp(buf, "flat", 5)) { // Client is requesting a flat view (still kind of fuzzy here)
140 flat_view(h, c, &buf[5]);
144 if ( (c->room_default_view == VIEW_CALENDAR) // room types where objects are referenced by EUID
145 || (c->room_default_view == VIEW_TASKS)
146 || (c->room_default_view == VIEW_ADDRESSBOOK)
148 safestrncpy(unescaped_euid, buf, sizeof unescaped_euid);
149 unescape_input(unescaped_euid);
150 msgnum = locate_message_by_uid(c, unescaped_euid);
157 * All methods except PUT require the message to already exist
159 if ( (msgnum <= 0) && (strcasecmp(h->method, "PUT")) ) {
164 * If we get to this point we have a valid message number in an accessible room.
166 syslog(LOG_DEBUG, "msgnum is %ld, method is %s", msgnum, h->method);
170 * Was the client actually requesting a specific component within the message?
172 if (num_tokens(h->uri, '/') == 6) {
173 extract_token(buf, h->uri, 5, '/', sizeof buf);
174 if (!IsEmptyStr(buf)) {
175 download_mime_component(h, c, msgnum, buf);
181 * Ok, we want a full message, but first let's check for the if[-none]-match headers.
183 char *if_match = header_val(h, "If-Match");
184 if ( (if_match != NULL) && (!match_etags(if_match, msgnum)) ) {
189 char *if_none_match = header_val(h, "If-None-Match");
190 if ( (if_none_match != NULL) && (match_etags(if_none_match, msgnum)) ) {
199 if (!strcasecmp(h->method, "DELETE")) {
200 dav_delete_message(h, c, msgnum);
202 else if (!strcasecmp(h->method, "GET")) {
203 dav_get_message(h, c, msgnum);
205 else if (!strcasecmp(h->method, "PUT")) {
206 dav_put_message(h, c, unescaped_euid, msgnum);
209 do_404(h); // Got this far but the method made no sense? Bummer.
216 * Called by the_room_itself() when the HTTP method is REPORT
218 void report_the_room_itself(struct http_transaction *h, struct ctdlsession *c)
220 if (c->room_default_view == VIEW_CALENDAR) {
221 caldav_report(h, c); // CalDAV REPORTs ... fmgwac
225 do_404(h); // future implementations like CardDAV will require code paths here
230 * Called by the_room_itself() when the HTTP method is OPTIONS
232 void options_the_room_itself(struct http_transaction *h, struct ctdlsession *c)
234 h->response_code = 200;
235 h->response_string = strdup("OK");
236 if (c->room_default_view == VIEW_CALENDAR) {
237 add_response_header(h, strdup("DAV"), strdup("1, calendar-access")); // offer CalDAV
239 else if (c->room_default_view == VIEW_ADDRESSBOOK) {
240 add_response_header(h, strdup("DAV"), strdup("1, addressbook")); // offer CardDAV
243 add_response_header(h, strdup("DAV"), strdup("1")); // ordinary WebDAV for all other room types
245 add_response_header(h, strdup("Allow"), strdup("OPTIONS, PROPFIND, GET, PUT, REPORT, DELETE"));
250 * Called by the_room_itself() when the HTTP method is PROPFIND
252 void propfind_the_room_itself(struct http_transaction *h, struct ctdlsession *c)
256 int dav_depth = (header_val(h, "Depth") ? atoi(header_val(h, "Depth")) : INT_MAX);
257 syslog(LOG_DEBUG, "Client PROPFIND requested depth: %d", dav_depth);
258 StrBuf *Buf = NewStrBuf();
260 StrBufAppendPrintf(Buf, "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
263 "xmlns:C=\"urn:ietf:params:xml:ns:caldav\""
267 /* Transmit the collection resource */
268 StrBufAppendPrintf(Buf, "<D:response>");
269 StrBufAppendPrintf(Buf, "<D:href>");
270 StrBufXMLEscAppend(Buf, NULL, h->site_prefix, strlen(h->site_prefix), 0);
271 StrBufAppendPrintf(Buf, "/ctdl/r/");
272 StrBufXMLEscAppend(Buf, NULL, c->room, strlen(c->room), 0);
273 StrBufAppendPrintf(Buf, "</D:href>");
275 StrBufAppendPrintf(Buf, "<D:propstat>");
276 StrBufAppendPrintf(Buf, "<D:status>HTTP/1.1 200 OK</D:status>");
277 StrBufAppendPrintf(Buf, "<D:prop>");
278 StrBufAppendPrintf(Buf, "<D:displayname>");
279 StrBufXMLEscAppend(Buf, NULL, c->room, strlen(c->room), 0);
280 StrBufAppendPrintf(Buf, "</D:displayname>");
282 StrBufAppendPrintf(Buf, "<D:owner />"); // empty owner ought to be legal; see rfc3744 section 5.1
284 StrBufAppendPrintf(Buf, "<D:resourcetype><D:collection />");
285 switch(c->room_default_view) {
287 StrBufAppendPrintf(Buf, "<C:calendar />"); // RFC4791 section 4.2
290 StrBufAppendPrintf(Buf, "</D:resourcetype>");
292 int enumerate_by_euid = 0; // nonzero if messages will be retrieved by euid instead of msgnum
293 switch(c->room_default_view) {
294 case VIEW_CALENDAR: // RFC4791 section 5.2
295 StrBufAppendPrintf(Buf, "<C:supported-calendar-component-set><C:comp name=\"VEVENT\"/></C:supported-calendar-component-set>");
296 StrBufAppendPrintf(Buf, "<C:supported-calendar-data>");
297 StrBufAppendPrintf(Buf, "<C:calendar-data content-type=\"text/calendar\" version=\"2.0\"/>");
298 StrBufAppendPrintf(Buf, "</C:supported-calendar-data>");
299 enumerate_by_euid = 1;
301 case VIEW_TASKS: // RFC4791 section 5.2
302 StrBufAppendPrintf(Buf, "<C:supported-calendar-component-set><C:comp name=\"VTODO\"/></C:supported-calendar-component-set>");
303 StrBufAppendPrintf(Buf, "<C:supported-calendar-data>");
304 StrBufAppendPrintf(Buf, "<C:calendar-data content-type=\"text/calendar\" version=\"2.0\"/>");
305 StrBufAppendPrintf(Buf, "</C:supported-calendar-data>");
306 enumerate_by_euid = 1;
308 case VIEW_ADDRESSBOOK: // FIXME put some sort of CardDAV crapola here when we implement it
309 enumerate_by_euid = 1;
311 case VIEW_WIKI: // FIXME invent "WikiDAV" ?
312 enumerate_by_euid = 1;
317 /* FIXME get the mtime
318 StrBufAppendPrintf(Buf, "<D:getlastmodified>");
320 StrBufAppendPrintf(Buf, "</D:getlastmodified>");
323 StrBufAppendPrintf(Buf, "</D:prop>");
324 StrBufAppendPrintf(Buf, "</D:propstat>");
325 StrBufAppendPrintf(Buf, "</D:response>\n");
327 // If a depth greater than zero was specified, transmit the collection listing
330 long *msglist = get_msglist(c, "ALL");
333 for (i=0; (msglist[i] > 0); ++i) {
334 if ((i%10) == 0) syslog(LOG_DEBUG, "PROPFIND enumerated %d messages", i);
335 e = NULL; // EUID gets stored here
339 ctdl_printf(c, "MSG0 %ld|3", msglist[i]);
340 ctdl_readline(c, cbuf, sizeof(cbuf));
341 if (cbuf[0] == '1') while (ctdl_readline(c, cbuf, sizeof(cbuf)), strcmp(cbuf, "000")) {
342 if ( (enumerate_by_euid) && (!strncasecmp(cbuf, "exti=", 5)) ) {
343 // e = strdup(&cbuf[5]);
344 int elen = (2 * strlen(&cbuf[5]));
346 urlesc(e, elen, &cbuf[5]);
348 if (!strncasecmp(cbuf, "time=", 5)) {
349 timestamp = atol(&cbuf[5]);
354 sprintf(e, "%ld", msglist[i]);
356 StrBufAppendPrintf(Buf, "<D:response>");
358 // Generate the 'href' tag for this message
359 StrBufAppendPrintf(Buf, "<D:href>");
360 StrBufXMLEscAppend(Buf, NULL, h->site_prefix, strlen(h->site_prefix), 0);
361 StrBufAppendPrintf(Buf, "/ctdl/r/");
362 StrBufXMLEscAppend(Buf, NULL, c->room, strlen(c->room), 0);
363 StrBufAppendPrintf(Buf, "/");
364 StrBufXMLEscAppend(Buf, NULL, e, strlen(e), 0);
365 StrBufAppendPrintf(Buf, "</D:href>");
366 StrBufAppendPrintf(Buf, "<D:propstat>");
367 StrBufAppendPrintf(Buf, "<D:status>HTTP/1.1 200 OK</D:status>");
368 StrBufAppendPrintf(Buf, "<D:prop>");
370 switch(c->room_default_view) {
372 StrBufAppendPrintf(Buf, "<D:getcontenttype>text/calendar; component=vevent</D:getcontenttype>");
375 StrBufAppendPrintf(Buf, "<D:getcontenttype>text/calendar; component=vtodo</D:getcontenttype>");
377 case VIEW_ADDRESSBOOK:
378 StrBufAppendPrintf(Buf, "<D:getcontenttype>text/x-vcard</D:getcontenttype>");
383 char *datestring = http_datestring(timestamp);
385 StrBufAppendPrintf(Buf, "<D:getlastmodified>");
386 StrBufXMLEscAppend(Buf, NULL, datestring, strlen(datestring), 0);
387 StrBufAppendPrintf(Buf, "</D:getlastmodified>");
390 if (enumerate_by_euid) { // FIXME ajc 2017oct30 should this be inside the timestamp conditional?
391 StrBufAppendPrintf(Buf, "<D:getetag>\"%ld\"</D:getetag>", msglist[i]);
394 StrBufAppendPrintf(Buf, "</D:prop></D:propstat></D:response>\n");
402 StrBufAppendPrintf(Buf, "</D:multistatus>\n");
404 add_response_header(h, strdup("Content-type"), strdup("text/xml"));
405 h->response_code = 207;
406 h->response_string = strdup("Multi-Status");
407 h->response_body_length = StrLength(Buf);
408 h->response_body = SmashStrBuf(&Buf);
411 // some good examples here
412 // http://blogs.nologin.es/rickyepoderi/index.php?/archives/14-Introducing-CalDAV-Part-I.html
416 * Called by the_room_itself() when the HTTP method is PROPFIND
418 void get_the_room_itself(struct http_transaction *h, struct ctdlsession *c)
420 JsonValue *j = NewJsonObject(HKEY("gotoroom"));
422 JsonObjectAppend(j, NewJsonPlainString( HKEY("name"), c->room, -1));
423 JsonObjectAppend(j, NewJsonNumber( HKEY("current_view"), c->room_current_view ));
424 JsonObjectAppend(j, NewJsonNumber( HKEY("default_view"), c->room_default_view ));
425 JsonObjectAppend(j, NewJsonNumber( HKEY("new_messages"), c->new_messages ));
426 JsonObjectAppend(j, NewJsonNumber( HKEY("total_messages"), c->total_messages ));
428 StrBuf *sj = NewStrBuf();
429 SerializeJson(sj, j, 1); // '1' == free the source array
431 add_response_header(h, strdup("Content-type"), strdup("application/json"));
432 h->response_code = 200;
433 h->response_string = strdup("OK");
434 h->response_body_length = StrLength(sj);
435 h->response_body = SmashStrBuf(&sj);
441 * Handle REST/DAV requests for the room itself (such as /ctdl/r/roomname
442 * or /ctdl/r/roomname/ but *not* specific objects within the room)
444 void the_room_itself(struct http_transaction *h, struct ctdlsession *c)
446 // OPTIONS method on the room itself usually is a DAV client assessing what's here.
448 if (!strcasecmp(h->method, "OPTIONS")) {
449 options_the_room_itself(h, c);
453 // PROPFIND method on the room itself could be looking for a directory
455 if (!strcasecmp(h->method, "PROPFIND")) {
456 propfind_the_room_itself(h, c);
460 // REPORT method on the room itself is probably the dreaded CalDAV tower-of-crapola
462 if (!strcasecmp(h->method, "REPORT")) {
463 report_the_room_itself(h, c);
467 // GET method on the room itself is an API call, possibly from our JavaScript front end
469 if (!strcasecmp(h->method, "get")) {
470 get_the_room_itself(h, c);
474 // we probably want a "go to this room" for interactive access
480 * Dispatcher for "/ctdl/r" and "/ctdl/r/" for the room list
482 void room_list(struct http_transaction *h, struct ctdlsession *c)
487 ctdl_printf(c, "LKRA");
488 ctdl_readline(c, buf, sizeof(buf));
494 JsonValue *j = NewJsonArray(HKEY("lkra"));
495 while (ctdl_readline(c, buf, sizeof(buf)) , strcmp(buf, "000")) {
497 // name|QRflags|QRfloor|QRorder|QRflags2|ra|current_view|default_view|mtime
498 JsonValue *jr = NewJsonObject(HKEY("room"));
500 extract_token(roomname, buf, 0, '|', sizeof roomname);
501 JsonObjectAppend(jr, NewJsonPlainString( HKEY("name"), roomname, -1));
503 int ra = extract_int(buf, 5);
504 JsonObjectAppend(jr, NewJsonBool( HKEY("known"), (ra && UA_KNOWN)));
505 JsonObjectAppend(jr, NewJsonBool( HKEY("hasnewmsgs"), (ra && UA_HASNEWMSGS)));
507 int floor = extract_int(buf, 2);
508 JsonObjectAppend(jr, NewJsonNumber( HKEY("floor"), floor));
510 int rorder = extract_int(buf, 3);
511 JsonObjectAppend(jr, NewJsonNumber( HKEY("rorder"), rorder));
513 JsonArrayAppend(j, jr); // add the room to the array
516 StrBuf *sj = NewStrBuf();
517 SerializeJson(sj, j, 1); // '1' == free the source array
519 add_response_header(h, strdup("Content-type"), strdup("application/json"));
520 h->response_code = 200;
521 h->response_string = strdup("OK");
522 h->response_body_length = StrLength(sj);
523 h->response_body = SmashStrBuf(&sj);
528 * Dispatcher for paths starting with /ctdl/r/
530 void ctdl_r(struct http_transaction *h, struct ctdlsession *c)
532 char requested_roomname[128];
535 // All room-related functions require being "in" the room specified. Are we in that room already?
536 extract_token(requested_roomname, h->uri, 3, '/', sizeof requested_roomname);
537 unescape_input(requested_roomname);
539 if (IsEmptyStr(requested_roomname)) { // /ctdl/r/
544 // If not, try to go there.
545 if (strcasecmp(requested_roomname, c->room)) {
546 ctdl_printf(c, "GOTO %s", requested_roomname);
547 ctdl_readline(c, buf, sizeof(buf));
549 // buf[3] will indicate whether any instant messages are waiting
550 extract_token(c->room, &buf[4], 0, '|', sizeof c->room);
551 c->new_messages = extract_int(&buf[4], 1);
552 c->total_messages = extract_int(&buf[4], 2);
553 // 3 (int)info Info flag: set to nonzero if the user needs to read this room's info file
554 // 4 (int)CCC->room.QRflags Various flags associated with this room.
555 // 5 (long)CCC->room.QRhighest The highest message number present in this room
556 // 6 (long)vbuf.v_lastseen The highest message number the user has read in this room
557 // 7 (int)rmailflag Boolean flag: 1 if this is a Mail> room, 0 otherwise.
558 // 8 (int)raideflag Nonzero if user is either Aide or a Room Aide in this room
559 // 9 (int)newmailcount The number of new Mail messages the user has
560 // 10 (int)CCC->room.QRfloor The floor number this room resides on
561 c->room_current_view = extract_int(&buf[4], 11);
562 c->room_default_view = extract_int(&buf[4], 12);
563 // 13 (int)is_trash Boolean flag: 1 if this is the user's Trash folder, 0 otherwise.
564 // 14 (int)CCC->room.QRflags2 More flags associated with this room
565 // 15 (long)CCC->room.QRmtime Timestamp of the last write activity in this room
573 // At this point our Citadel client session is "in" the specified room.
575 if (num_tokens(h->uri, '/') == 4) { // /ctdl/r/roomname
576 the_room_itself(h, c);
580 extract_token(buf, h->uri, 4, '/', sizeof buf);
581 if (num_tokens(h->uri, '/') == 5) {
582 if (IsEmptyStr(buf)) {
583 the_room_itself(h, c); // /ctdl/r/roomname/ ( same as /ctdl/r/roomname )
586 object_in_room(h, c); // /ctdl/r/roomname/object
590 if (num_tokens(h->uri, '/') == 6) {
591 object_in_room(h, c); // /ctdl/r/roomname/object/ or possibly /ctdl/r/roomname/object/component
595 // If we get to this point, the client specified a valid room but requested an action we don't know how to perform.