2 // Message base functions
4 // Copyright (c) 1996-2022 by the citadel.org team
6 // This program is open source software. Use, duplication, or
7 // disclosure are subject to the GNU General Public License v3.
12 // Given an encoded UID, translate that to an unencoded Citadel EUID and
13 // then search for it in the current room. Return a message number or -1
15 long locate_message_by_uid(struct ctdlsession *c, char *uid) {
18 ctdl_printf(c, "EUID %s", uid);
19 ctdl_readline(c, buf, sizeof buf);
21 return (atol(&buf[4]));
25 // Ugly hack to handle Mozilla Thunderbird, try stripping ".ics" if present
26 if (!strcasecmp(&uid[strlen(uid) - 4], ".ics")) {
27 safestrncpy(buf, uid, sizeof buf);
28 buf[strlen(buf) - 4] = 0;
29 ctdl_printf(c, "EUID %s", buf);
30 ctdl_readline(c, buf, sizeof buf);
32 return (atol(&buf[4]));
41 // DAV delete an object in a room.
42 void dav_delete_message(struct http_transaction *h, struct ctdlsession *c, long msgnum) {
43 ctdl_delete_msgs(c, &msgnum, 1);
44 h->response_code = 204;
45 h->response_string = strdup("no content");
49 // DAV move or copy an object in a room.
50 void dav_move_or_copy_message(struct http_transaction *h, struct ctdlsession *c, long msgnum, int move_or_copy) {
51 char target_room[ROOMNAMELEN];
54 // HTTP "Destination" header will tell us the target collection
55 char *target_collection = header_val(h, "Destination");
56 syslog(LOG_DEBUG, "dest coll: \"%s\"", target_collection);
58 // Translate the target WebDAV Collection name to a Citadel Room name.
59 // Note that some clients will supply a fully-qualified URL such as "http://example.com/ctdl/r/roomname/999"
60 // so we're just going to search for "/ctdl/r/" and work from there.
61 char *ctdlr = strstr(target_collection, "/ctdl/r/");
63 do_412(h); // badly formed target collection; fail out.
66 safestrncpy(target_room, ctdlr+8, sizeof target_room);
67 char *slash = strchr(target_room, '/');
69 *slash = 0; // lop off the "filename" we don't need it
71 unescape_input(target_room);
72 syslog(LOG_DEBUG, "dest room: \"%s\"", target_room);
74 // Perform the move or copy operation
75 ctdl_printf(c, "MOVE %ld|%s|%d", msgnum, target_room, move_or_copy); // Citadel Server: 0=move, 1=copy
76 ctdl_readline(c, buf, sizeof buf);
78 do_204(h); // succeed (no content)
81 do_412(h); // fail (precondition failed)
85 // GET method directly on a message in a room
86 void dav_get_message(struct http_transaction *h, struct ctdlsession *c, long msgnum) {
92 ctdl_printf(c, "MSG2 %ld", msgnum);
93 ctdl_readline(c, buf, sizeof buf);
99 char *etag = malloc(20);
101 sprintf(etag, "%ld", msgnum);
102 add_response_header(h, strdup("ETag"), etag); // http_transaction now owns this memory
105 while (ctdl_readline(c, buf, sizeof buf), strcmp(buf, "000")) {
106 if (IsEmptyStr(buf) && (in_body == 0)) {
110 else if (in_body == 0) {
112 char *v = strchr(buf, ':');
116 string_trim(v); // we now have a key (k) and a value (v)
117 if ((!strcasecmp(k, "content-type")) // fields which can be passed from RFC822 to HTTP as-is
118 || (!strcasecmp(k, "date"))
120 add_response_header(h, strdup(k), strdup(v));
122 else if (!strcasecmp(k, "content-transfer-encoding")) {
123 if (!strcasecmp(v, "base64")) {
126 else if (!strcasecmp(v, "quoted-printable")) {
132 else if ((in_body == 1) && (Body != NULL)) {
133 StrBufAppendPrintf(Body, "%s\n", buf);
137 h->response_code = 200;
138 h->response_string = strdup("OK");
141 if (encoding == 'q') {
142 h->response_body = malloc(StrLength(Body));
143 if (h->response_body != NULL) {
144 h->response_body_length =
145 CtdlDecodeQuotedPrintable(h->response_body, (char *) ChrPtr(Body), StrLength(Body));
149 else if (encoding == 'b') {
150 h->response_body = malloc(StrLength(Body));
151 if (h->response_body != NULL) {
152 h->response_body_length = CtdlDecodeBase64(h->response_body, ChrPtr(Body), StrLength(Body));
157 h->response_body_length = StrLength(Body);
158 h->response_body = SmashStrBuf(&Body);
164 // PUT a message into a room
165 void dav_put_message(struct http_transaction *h, struct ctdlsession *c, char *euid, long old_msgnum) {
167 char *content_type = NULL;
171 char response_string[1024];
173 if ((h->request_body == NULL) || (h->request_body_length < 1)) {
174 do_404(h); // Refuse to post a null message
178 // Extract metadata from the URL
179 char *wefw = get_url_param(h, "wefw"); // References:
180 if (!wefw) wefw = "";
181 char *subj = get_url_param(h, "subj"); // Subject:
182 if (!subj) subj = "";
183 char *mailto = get_url_param(h, "mailto"); // To:
184 if (!mailto) mailto = "";
185 char *mailcc = get_url_param(h, "mailcc"); // Cc:
186 if (!mailcc) mailcc = "";
187 char *mailbcc = get_url_param(h, "mailbcc"); // Bcc:
188 if (!mailbcc) mailbcc = "";
190 // Mode 4 will give us metadata back after upload
191 ctdl_printf(c, "ENT0 1|%s||4|%s||1|%s|%s|||%s|", mailto, subj, mailcc, mailbcc, wefw);
192 ctdl_readline(c, buf, sizeof buf);
194 h->response_code = 502;
195 h->response_string = strdup("bad gateway");
196 add_response_header(h, strdup("Content-type"), strdup("text/plain"));
197 h->response_body = strdup(buf);
198 h->response_body_length = strlen(h->response_body);
202 // Remember, ctdl_printf() appends \n on its own, so when adding a CRLF newline, only use \r
203 // Or for a blank line, use ctdl_write() with \r\n
205 content_type = header_val(h, "Content-type");
206 ctdl_printf(c, "Content-type: %s\r", (content_type ? content_type : "application/octet-stream"));
207 ctdl_write(c, HKEY("\r\n"));
208 ctdl_write(c, h->request_body, h->request_body_length);
209 if (h->request_body[h->request_body_length] != '\n') {
210 ctdl_write(c, HKEY("\r\n"));
212 ctdl_printf(c, "000");
214 // Now handle the response from the Citadel server.
218 strcpy(new_euid, "");
219 strcpy(response_string, "");
221 while (ctdl_readline(c, buf, sizeof buf), strcmp(buf, "000"))
224 new_msgnum = atol(buf);
227 safestrncpy(response_string, buf, sizeof response_string);
228 syslog(LOG_DEBUG, "new_msgnum=%ld (%s)\n", new_msgnum, buf);
231 safestrncpy(new_euid, buf, sizeof new_euid);
237 // Tell the client what happened.
239 // Citadel failed in some way?
240 char *new_location = malloc(1024);
241 if ((new_msgnum < 0L) || (new_location == NULL)) {
242 h->response_code = 502;
243 h->response_string = strdup("bad gateway");
244 add_response_header(h, strdup("Content-type"), strdup("text/plain"));
245 h->response_body = strdup(response_string);
246 h->response_body_length = strlen(h->response_body);
250 char *etag = malloc(20);
252 sprintf(etag, "%ld", new_msgnum);
253 add_response_header(h, strdup("ETag"), etag); // http_transaction now owns this memory
258 urlesc(esc_room, sizeof esc_room, c->room);
259 urlesc(esc_euid, sizeof esc_euid, new_euid);
260 snprintf(new_location, 1024, "/ctdl/r/%s/%s", esc_room, esc_euid);
261 add_response_header(h, strdup("Location"), new_location); // http_transaction now owns this memory
263 if (old_msgnum <= 0) {
264 h->response_code = 201; // We created this item for the first time.
265 h->response_string = strdup("created");
268 h->response_code = 204; // We modified an existing item.
269 h->response_string = strdup("no content");
271 // The item we replaced has probably already been deleted by
272 // the Citadel server, but we'll do this anyway, just in case.
273 ctdl_delete_msgs(c, &old_msgnum, 1);
279 // Download a single component of a MIME-encoded message
280 void download_mime_component(struct http_transaction *h, struct ctdlsession *c, long msgnum, char *partnum) {
282 char content_type[1024];
284 ctdl_printf(c, "DLAT %ld|%s", msgnum, partnum);
285 ctdl_readline(c, buf, sizeof buf);
287 do_404(h); // too bad, so sad, go away
289 // Server response is going to be: 6XX length|-1|filename|content-type|charset
290 h->response_body_length = extract_int(&buf[4], 0);
291 extract_token(content_type, buf, 3, '|', sizeof content_type);
293 h->response_body = malloc(h->response_body_length + 1);
297 thisblock = read(c->sock, &h->response_body[bytes], (h->response_body_length - bytes));
299 syslog(LOG_DEBUG, "Bytes read: %d of %d", (int) bytes, (int) h->response_body_length);
300 } while ((bytes < h->response_body_length) && (thisblock >= 0));
301 h->response_body[h->response_body_length] = 0; // null terminate it just for good measure
302 syslog(LOG_DEBUG, "content type: %s", content_type);
304 add_response_header(h, strdup("Content-type"), strdup(content_type));
305 h->response_code = 200;
306 h->response_string = strdup("OK");