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 // GET method directly on a message in a room
50 void dav_get_message(struct http_transaction *h, struct ctdlsession *c, long msgnum) {
56 ctdl_printf(c, "MSG2 %ld", msgnum);
57 ctdl_readline(c, buf, sizeof buf);
63 char *etag = malloc(20);
65 sprintf(etag, "%ld", msgnum);
66 add_response_header(h, strdup("ETag"), etag); // http_transaction now owns this memory
69 while (ctdl_readline(c, buf, sizeof buf), strcmp(buf, "000")) {
70 if (IsEmptyStr(buf) && (in_body == 0)) {
74 else if (in_body == 0) {
76 char *v = strchr(buf, ':');
80 striplt(v); // we now have a key (k) and a value (v)
81 if ((!strcasecmp(k, "content-type")) // fields which can be passed from RFC822 to HTTP as-is
82 || (!strcasecmp(k, "date"))
84 add_response_header(h, strdup(k), strdup(v));
86 else if (!strcasecmp(k, "content-transfer-encoding")) {
87 if (!strcasecmp(v, "base64")) {
90 else if (!strcasecmp(v, "quoted-printable")) {
96 else if ((in_body == 1) && (Body != NULL)) {
97 StrBufAppendPrintf(Body, "%s\n", buf);
101 h->response_code = 200;
102 h->response_string = strdup("OK");
105 if (encoding == 'q') {
106 h->response_body = malloc(StrLength(Body));
107 if (h->response_body != NULL) {
108 h->response_body_length =
109 CtdlDecodeQuotedPrintable(h->response_body, (char *) ChrPtr(Body), StrLength(Body));
113 else if (encoding == 'b') {
114 h->response_body = malloc(StrLength(Body));
115 if (h->response_body != NULL) {
116 h->response_body_length = CtdlDecodeBase64(h->response_body, ChrPtr(Body), StrLength(Body));
121 h->response_body_length = StrLength(Body);
122 h->response_body = SmashStrBuf(&Body);
128 // PUT a message into a room
129 void dav_put_message(struct http_transaction *h, struct ctdlsession *c, char *euid, long old_msgnum) {
131 char *content_type = NULL;
135 char response_string[1024];
137 if ((h->request_body == NULL) || (h->request_body_length < 1)) {
138 do_404(h); // Refuse to post a null message
142 // Extract metadata from the URL
143 char *wefw = get_url_param(h, "wefw"); // References:
144 if (!wefw) wefw = "";
145 char *subj = get_url_param(h, "subj"); // Subject:
146 if (!subj) subj = "";
147 char *mailto = get_url_param(h, "mailto"); // To:
148 if (!mailto) mailto = "";
149 char *mailcc = get_url_param(h, "mailcc"); // Cc:
150 if (!mailcc) mailcc = "";
151 char *mailbcc = get_url_param(h, "mailbcc"); // Bcc:
152 if (!mailbcc) mailbcc = "";
154 // Mode 4 will give us metadata back after upload
155 ctdl_printf(c, "ENT0 1|%s||4|%s||1|%s|%s|||%s|", mailto, subj, mailcc, mailbcc, wefw);
156 ctdl_readline(c, buf, sizeof buf);
158 h->response_code = 502;
159 h->response_string = strdup("bad gateway");
160 add_response_header(h, strdup("Content-type"), strdup("text/plain"));
161 h->response_body = strdup(buf);
162 h->response_body_length = strlen(h->response_body);
166 // Remember, ctdl_printf() appends \n on its own, so when adding a CRLF newline, only use \r
167 // Or for a blank line, use ctdl_write() with \r\n
169 content_type = header_val(h, "Content-type");
170 ctdl_printf(c, "Content-type: %s\r", (content_type ? content_type : "application/octet-stream"));
171 ctdl_write(c, HKEY("\r\n"));
172 ctdl_write(c, h->request_body, h->request_body_length);
173 if (h->request_body[h->request_body_length] != '\n') {
174 ctdl_write(c, HKEY("\r\n"));
176 ctdl_printf(c, "000");
178 // 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");
232 h->response_code = 204; // We modified an existing item.
233 h->response_string = strdup("no content");
235 // The item we replaced has probably already been deleted by
236 // the Citadel server, but we'll do this anyway, just in case.
237 ctdl_delete_msgs(c, &old_msgnum, 1);
243 // Download a single component of a MIME-encoded message
244 void download_mime_component(struct http_transaction *h, struct ctdlsession *c, long msgnum, char *partnum) {
246 char content_type[1024];
248 ctdl_printf(c, "DLAT %ld|%s", msgnum, partnum);
249 ctdl_readline(c, buf, sizeof buf);
251 do_404(h); // too bad, so sad, go away
253 // Server response is going to be: 6XX length|-1|filename|content-type|charset
254 h->response_body_length = extract_int(&buf[4], 0);
255 extract_token(content_type, buf, 3, '|', sizeof content_type);
257 h->response_body = malloc(h->response_body_length + 1);
261 thisblock = read(c->sock, &h->response_body[bytes], (h->response_body_length - bytes));
263 syslog(LOG_DEBUG, "Bytes read: %d of %d", (int) bytes, (int) h->response_body_length);
264 } while ((bytes < h->response_body_length) && (thisblock >= 0));
265 h->response_body[h->response_body_length] = 0; // null terminate it just for good measure
266 syslog(LOG_DEBUG, "content type: %s", content_type);
268 add_response_header(h, strdup("Content-type"), strdup(content_type));
269 h->response_code = 200;
270 h->response_string = strdup("OK");