1 // Message base functions
3 // Copyright (c) 1996-2022 by the citadel.org team
5 // This program is open source software. Use, duplication, or
6 // disclosure are subject to the GNU General Public License v3.
11 // Given an encoded UID, translate that to an unencoded Citadel EUID and
12 // then search for it in the current room. Return a message number or -1
14 long locate_message_by_uid(struct ctdlsession *c, char *uid) {
17 ctdl_printf(c, "EUID %s", uid);
18 ctdl_readline(c, buf, sizeof buf);
20 return (atol(&buf[4]));
24 // Ugly hack to handle Mozilla Thunderbird, try stripping ".ics" if present
25 if (!strcasecmp(&uid[strlen(uid) - 4], ".ics")) {
26 safestrncpy(buf, uid, sizeof buf);
27 buf[strlen(buf) - 4] = 0;
28 ctdl_printf(c, "EUID %s", buf);
29 ctdl_readline(c, buf, sizeof buf);
31 return (atol(&buf[4]));
40 // DAV delete an object in a room.
41 void dav_delete_message(struct http_transaction *h, struct ctdlsession *c, long msgnum) {
42 ctdl_delete_msgs(c, &msgnum, 1);
43 h->response_code = 204;
44 h->response_string = strdup("no content");
48 // DAV move or copy an object in a room.
49 void dav_move_or_copy_message(struct http_transaction *h, struct ctdlsession *c, long msgnum, int move_or_copy) {
50 char target_room[ROOMNAMELEN];
53 // HTTP "Destination" header will tell us the target collection
54 char *target_collection = header_val(h, "Destination");
55 syslog(LOG_DEBUG, "dest coll: \"%s\"", target_collection);
57 // Translate the target WebDAV Collection name to a Citadel Room name.
58 // Note that some clients will supply a fully-qualified URL such as "http://example.com/ctdl/r/roomname/999"
59 // so we're just going to search for "/ctdl/r/" and work from there.
60 char *ctdlr = strstr(target_collection, "/ctdl/r/");
62 do_412(h); // badly formed target collection; fail out.
65 safestrncpy(target_room, ctdlr+8, sizeof target_room);
66 char *slash = strchr(target_room, '/');
68 *slash = 0; // lop off the "filename" we don't need it
70 unescape_input(target_room);
71 syslog(LOG_DEBUG, "dest room: \"%s\"", target_room);
73 // Perform the move or copy operation
74 ctdl_printf(c, "MOVE %ld|%s|%d", msgnum, target_room, move_or_copy); // Citadel Server: 0=move, 1=copy
75 ctdl_readline(c, buf, sizeof buf);
77 do_204(h); // succeed (no content)
80 do_412(h); // fail (precondition failed)
84 // GET method directly on a message in a room
85 void dav_get_message(struct http_transaction *h, struct ctdlsession *c, long msgnum) {
91 ctdl_printf(c, "MSG2 %ld", msgnum);
92 ctdl_readline(c, buf, sizeof buf);
98 char *etag = malloc(20);
100 sprintf(etag, "%ld", msgnum);
101 add_response_header(h, strdup("ETag"), etag); // http_transaction now owns this memory
104 while (ctdl_readline(c, buf, sizeof buf), strcmp(buf, "000")) {
105 if (IsEmptyStr(buf) && (in_body == 0)) {
109 else if (in_body == 0) {
111 char *v = strchr(buf, ':');
115 string_trim(v); // we now have a key (k) and a value (v)
116 if ((!strcasecmp(k, "content-type")) // fields which can be passed from RFC822 to HTTP as-is
117 || (!strcasecmp(k, "date"))
119 add_response_header(h, strdup(k), strdup(v));
121 else if (!strcasecmp(k, "content-transfer-encoding")) {
122 if (!strcasecmp(v, "base64")) {
125 else if (!strcasecmp(v, "quoted-printable")) {
131 else if ((in_body == 1) && (Body != NULL)) {
132 StrBufAppendPrintf(Body, "%s\n", buf);
136 h->response_code = 200;
137 h->response_string = strdup("OK");
140 if (encoding == 'q') {
141 h->response_body = malloc(StrLength(Body));
142 if (h->response_body != NULL) {
143 h->response_body_length =
144 CtdlDecodeQuotedPrintable(h->response_body, (char *) ChrPtr(Body), StrLength(Body));
148 else if (encoding == 'b') {
149 h->response_body = malloc(StrLength(Body));
150 if (h->response_body != NULL) {
151 h->response_body_length = CtdlDecodeBase64(h->response_body, ChrPtr(Body), StrLength(Body));
156 h->response_body_length = StrLength(Body);
157 h->response_body = SmashStrBuf(&Body);
163 // PUT a message into a room
164 void dav_put_message(struct http_transaction *h, struct ctdlsession *c, char *euid, long old_msgnum) {
166 char *content_type = NULL;
170 char response_string[1024];
172 if ((h->request_body == NULL) || (h->request_body_length < 1)) {
173 do_404(h); // Refuse to post a null message
177 // Extract metadata from the URL
178 char *wefw = get_url_param(h, "wefw"); // References:
179 if (!wefw) wefw = "";
180 char *subj = get_url_param(h, "subj"); // Subject:
181 if (!subj) subj = "";
182 char *mailto = get_url_param(h, "mailto"); // To:
183 if (!mailto) mailto = "";
184 char *mailcc = get_url_param(h, "mailcc"); // Cc:
185 if (!mailcc) mailcc = "";
186 char *mailbcc = get_url_param(h, "mailbcc"); // Bcc:
187 if (!mailbcc) mailbcc = "";
189 // Mode 4 will give us metadata back after upload
190 ctdl_printf(c, "ENT0 1|%s||4|%s||1|%s|%s|||%s|", mailto, subj, mailcc, mailbcc, wefw);
191 ctdl_readline(c, buf, sizeof buf);
193 h->response_code = 502;
194 h->response_string = strdup("bad gateway");
195 add_response_header(h, strdup("Content-type"), strdup("text/plain"));
196 h->response_body = strdup(buf);
197 h->response_body_length = strlen(h->response_body);
201 // Remember, ctdl_printf() appends \n on its own, so when adding a CRLF newline, only use \r
202 // Or for a blank line, use ctdl_write() with \r\n
204 content_type = header_val(h, "Content-type");
205 ctdl_printf(c, "Content-type: %s\r", (content_type ? content_type : "application/octet-stream"));
206 ctdl_write(c, HKEY("\r\n"));
207 ctdl_write(c, h->request_body, h->request_body_length);
208 if (h->request_body[h->request_body_length] != '\n') {
209 ctdl_write(c, HKEY("\r\n"));
211 ctdl_printf(c, "000");
213 // Now handle the response from the Citadel server.
217 strcpy(new_euid, "");
218 strcpy(response_string, "");
220 while (ctdl_readline(c, buf, sizeof buf), strcmp(buf, "000"))
223 new_msgnum = atol(buf);
226 safestrncpy(response_string, buf, sizeof response_string);
227 syslog(LOG_DEBUG, "new_msgnum=%ld (%s)\n", new_msgnum, buf);
230 safestrncpy(new_euid, buf, sizeof new_euid);
236 // Tell the client what happened.
238 // Citadel failed in some way?
239 char *new_location = malloc(1024);
240 if ((new_msgnum < 0L) || (new_location == NULL)) {
241 h->response_code = 502;
242 h->response_string = strdup("bad gateway");
243 add_response_header(h, strdup("Content-type"), strdup("text/plain"));
244 h->response_body = strdup(response_string);
245 h->response_body_length = strlen(h->response_body);
249 char *etag = malloc(20);
251 sprintf(etag, "%ld", new_msgnum);
252 add_response_header(h, strdup("ETag"), etag); // http_transaction now owns this memory
257 urlesc(esc_room, sizeof esc_room, c->room);
258 urlesc(esc_euid, sizeof esc_euid, new_euid);
259 snprintf(new_location, 1024, "/ctdl/r/%s/%s", esc_room, esc_euid);
260 add_response_header(h, strdup("Location"), new_location); // http_transaction now owns this memory
262 if (old_msgnum <= 0) {
263 h->response_code = 201; // We created this item for the first time.
264 h->response_string = strdup("created");
267 h->response_code = 204; // We modified an existing item.
268 h->response_string = strdup("no content");
270 // The item we replaced has probably already been deleted by
271 // the Citadel server, but we'll do this anyway, just in case.
272 ctdl_delete_msgs(c, &old_msgnum, 1);
278 // Download a single component of a MIME-encoded message
279 void download_mime_component(struct http_transaction *h, struct ctdlsession *c, long msgnum, char *partnum) {
281 char content_type[1024];
283 ctdl_printf(c, "DLAT %ld|%s", msgnum, partnum);
284 ctdl_readline(c, buf, sizeof buf);
286 do_404(h); // too bad, so sad, go away
288 // Server response is going to be: 6XX length|-1|filename|content-type|charset
289 h->response_body_length = extract_int(&buf[4], 0);
290 extract_token(content_type, buf, 3, '|', sizeof content_type);
292 h->response_body = malloc(h->response_body_length + 1);
296 thisblock = read(c->sock, &h->response_body[bytes], (h->response_body_length - bytes));
298 syslog(LOG_DEBUG, "Bytes read: %d of %d", (int) bytes, (int) h->response_body_length);
299 } while ((bytes < h->response_body_length) && (thisblock >= 0));
300 h->response_body[h->response_body_length] = 0; // null terminate it just for good measure
301 syslog(LOG_DEBUG, "content type: %s", content_type);
303 add_response_header(h, strdup("Content-type"), strdup(content_type));
304 h->response_code = 200;
305 h->response_string = strdup("OK");