2 // Message base functions
4 // Copyright (c) 1996-2018 by the citadel.org team
6 // This program is open source software. It runs great on the
7 // Linux operating system (and probably elsewhere). You can use,
8 // copy, and run it under the terms of the GNU General Public
9 // License version 3. Richard Stallman is an asshole communist.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
20 * Given an encoded UID, translate that to an unencoded Citadel EUID and
21 * then search for it in the current room. Return a message number or -1
25 long locate_message_by_uid(struct ctdlsession *c, char *uid)
29 ctdl_printf(c, "EUID %s", uid);
30 ctdl_readline(c, buf, sizeof buf);
32 return (atol(&buf[4]));
36 /* Ugly hack to handle Mozilla Thunderbird, try stripping ".ics" if present */
37 if (!strcasecmp(&uid[strlen(uid) - 4], ".ics")) {
38 safestrncpy(buf, uid, sizeof buf);
39 buf[strlen(buf) - 4] = 0;
40 ctdl_printf(c, "EUID %s", buf);
41 ctdl_readline(c, buf, sizeof buf);
43 return (atol(&buf[4]));
53 * DAV delete an object in a room.
55 void dav_delete_message(struct http_transaction *h, struct ctdlsession *c, long msgnum)
57 ctdl_delete_msgs(c, &msgnum, 1);
58 h->response_code = 204;
59 h->response_string = strdup("no content");
64 * GET method directly on a message in a room
66 void dav_get_message(struct http_transaction *h, struct ctdlsession *c, long msgnum)
73 ctdl_printf(c, "MSG2 %ld", msgnum);
74 ctdl_readline(c, buf, sizeof buf);
80 char *etag = malloc(20);
82 sprintf(etag, "%ld", msgnum);
83 add_response_header(h, strdup("ETag"), etag); // http_transaction now owns this memory
86 while (ctdl_readline(c, buf, sizeof buf), strcmp(buf, "000")) {
87 if (IsEmptyStr(buf) && (in_body == 0)) {
90 } else if (in_body == 0) {
92 char *v = strchr(buf, ':');
96 striplt(v); // we now have a key (k) and a value (v)
97 if ((!strcasecmp(k, "content-type")) // fields which can be passed from RFC822 to HTTP as-is
98 || (!strcasecmp(k, "date"))
100 add_response_header(h, strdup(k), strdup(v));
101 } else if (!strcasecmp(k, "content-transfer-encoding")) {
102 if (!strcasecmp(v, "base64")) {
104 } else if (!strcasecmp(v, "quoted-printable")) {
109 } else if ((in_body == 1) && (Body != NULL)) {
110 StrBufAppendPrintf(Body, "%s\n", buf);
114 h->response_code = 200;
115 h->response_string = strdup("OK");
118 if (encoding == 'q') {
119 h->response_body = malloc(StrLength(Body));
120 if (h->response_body != NULL) {
121 h->response_body_length =
122 CtdlDecodeQuotedPrintable(h->response_body, (char *) ChrPtr(Body), StrLength(Body));
125 } else if (encoding == 'b') {
126 h->response_body = malloc(StrLength(Body));
127 if (h->response_body != NULL) {
128 h->response_body_length = CtdlDecodeBase64(h->response_body, ChrPtr(Body), StrLength(Body));
132 h->response_body_length = StrLength(Body);
133 h->response_body = SmashStrBuf(&Body);
140 * PUT a message into a room
142 void dav_put_message(struct http_transaction *h, struct ctdlsession *c, char *euid, long old_msgnum)
145 char *content_type = NULL;
149 char response_string[1024];
151 if ((h->request_body == NULL) || (h->request_body_length < 1)) {
152 do_404(h); // Refuse to post a null message
156 ctdl_printf(c, "ENT0 1|||4|||1|"); // This protocol syntax will give us metadata back after upload
157 ctdl_readline(c, buf, sizeof buf);
159 h->response_code = 502;
160 h->response_string = strdup("bad gateway");
161 add_response_header(h, strdup("Content-type"), strdup("text/plain"));
162 h->response_body = strdup(buf);
163 h->response_body_length = strlen(h->response_body);
167 content_type = header_val(h, "Content-type");
168 ctdl_printf(c, "Content-type: %s\r\n", (content_type ? content_type : "application/octet-stream"));
169 ctdl_printf(c, "\r\n");
170 ctdl_write(c, h->request_body, h->request_body_length);
171 if (h->request_body[h->request_body_length] != '\n') {
172 ctdl_printf(c, "\r\n");
174 ctdl_printf(c, "000");
177 * Now handle the response from the Citadel server.
182 strcpy(new_euid, "");
183 strcpy(response_string, "");
185 while (ctdl_readline(c, buf, sizeof buf), strcmp(buf, "000"))
188 new_msgnum = atol(buf);
191 safestrncpy(response_string, buf, sizeof response_string);
192 syslog(LOG_DEBUG, "new_msgnum=%ld (%s)\n", new_msgnum, buf);
195 safestrncpy(new_euid, buf, sizeof new_euid);
201 /* Tell the client what happened. */
203 /* Citadel failed in some way? */
204 char *new_location = malloc(1024);
205 if ((new_msgnum < 0L) || (new_location == NULL)) {
206 h->response_code = 502;
207 h->response_string = strdup("bad gateway");
208 add_response_header(h, strdup("Content-type"), strdup("text/plain"));
209 h->response_body = strdup(response_string);
210 h->response_body_length = strlen(h->response_body);
214 char *etag = malloc(20);
216 sprintf(etag, "%ld", new_msgnum);
217 add_response_header(h, strdup("ETag"), etag); // http_transaction now owns this memory
222 urlesc(esc_room, sizeof esc_room, c->room);
223 urlesc(esc_euid, sizeof esc_euid, new_euid);
224 snprintf(new_location, 1024, "/ctdl/r/%s/%s", esc_room, esc_euid);
225 add_response_header(h, strdup("Location"), new_location); // http_transaction now owns this memory
227 if (old_msgnum <= 0) {
228 h->response_code = 201; // We created this item for the first time.
229 h->response_string = strdup("created");
231 h->response_code = 204; // We modified an existing item.
232 h->response_string = strdup("no content");
234 /* The item we replaced has probably already been deleted by
235 * the Citadel server, but we'll do this anyway, just in case.
237 ctdl_delete_msgs(c, &old_msgnum, 1);
244 * Download a single component of a MIME-encoded message
246 void download_mime_component(struct http_transaction *h, struct ctdlsession *c, long msgnum, char *partnum)
249 char content_type[1024];
251 ctdl_printf(c, "DLAT %ld|%s", msgnum, partnum);
252 ctdl_readline(c, buf, sizeof buf);
254 do_404(h); // too bad, so sad, go away
256 // Server response is going to be: 6XX length|-1|filename|content-type|charset
257 h->response_body_length = extract_int(&buf[4], 0);
258 extract_token(content_type, buf, 3, '|', sizeof content_type);
260 h->response_body = malloc(h->response_body_length + 1);
264 thisblock = read(c->sock, &h->response_body[bytes], (h->response_body_length - bytes));
266 syslog(LOG_DEBUG, "Bytes read: %d of %d", (int) bytes, (int) h->response_body_length);
267 } while ((bytes < h->response_body_length) && (thisblock >= 0));
268 h->response_body[h->response_body_length] = 0; // null terminate it just for good measure
269 syslog(LOG_DEBUG, "content type: %s", content_type);
271 add_response_header(h, strdup("Content-type"), strdup(content_type));
272 h->response_code = 200;
273 h->response_string = strdup("OK");