+++ /dev/null
-// The code in here feeds messages out as JSON to the client browser. It is currently being used
-// for the forum view, but as we implement other views we'll probably reuse a lot of what's here.
-//
-// Copyright (c) 1996-2022 by the citadel.org team
-//
-// This program is open source software. Use, duplication, or
-// disclosure are subject to the GNU General Public License v3.
-
-#include "webcit.h"
-
-// Commands we need to send to Citadel Server before we begin rendering forum view.
-// These are common to flat and threaded views.
-void setup_for_forum_view(struct ctdlsession *c) {
- char buf[1024];
- ctdl_printf(c, "MSGP text/html|text/plain"); // Declare the MIME types we know how to render
- ctdl_readline(c, buf, sizeof(buf)); // Ignore the response
- ctdl_printf(c, "MSGP dont_decode"); // Tell the server we will decode base64/etc client-side
- ctdl_readline(c, buf, sizeof(buf)); // Ignore the response
-}
-
-
-// Fetch a single message and return it in JSON format for client-side rendering
-void json_render_one_message(struct http_transaction *h, struct ctdlsession *c, long msgnum) {
- StrBuf *raw_msg = NULL;
- StrBuf *sanitized_msg = NULL;
- char buf[1024];
- char content_transfer_encoding[1024] = { 0 };
- char content_type[1024] = { 0 };
- char datetime[128] = { 0 };
- char author[1024] = { 0 };
- char emailaddr[1024] = { 0 };
- int message_originated_locally = 0;
-
- setup_for_forum_view(c);
-
- ctdl_printf(c, "MSG4 %ld", msgnum);
- ctdl_readline(c, buf, sizeof(buf));
- if (buf[0] != '1') {
- do_404(h);
- return;
- }
-
- JsonValue *j = NewJsonObject(HKEY("message"));
- JsonObjectAppend(j, NewJsonNumber(HKEY("msgnum"), msgnum));
-
- while ((ctdl_readline(c, buf, sizeof(buf)) >= 0) && (strcmp(buf, "text")) && (strcmp(buf, "000"))) {
-
- // citadel header parsing here
- if (!strncasecmp(buf, "from=", 5)) {
- safestrncpy(author, &buf[5], sizeof author);
- }
- else if (!strncasecmp(buf, "rfca=", 5)) {
- safestrncpy(emailaddr, &buf[5], sizeof emailaddr);
- }
- else if (!strncasecmp(buf, "time=", 5)) {
- JsonObjectAppend(j, NewJsonNumber(HKEY("time"), atol(&buf[5])));
- }
- else if (!strncasecmp(buf, "locl=", 5)) {
- message_originated_locally = 1;
- }
- else if (!strncasecmp(buf, "subj=", 5)) {
- JsonObjectAppend(j, NewJsonPlainString(HKEY("subj"), &buf[5], -1));
- }
- else if (!strncasecmp(buf, "msgn=", 5)) {
- JsonObjectAppend(j, NewJsonPlainString(HKEY("msgn"), &buf[5], -1));
- }
- else if (!strncasecmp(buf, "wefw=", 5)) {
- JsonObjectAppend(j, NewJsonPlainString(HKEY("wefw"), &buf[5], -1));
- }
- }
-
- if (message_originated_locally) {
- JsonObjectAppend(j, NewJsonPlainString(HKEY("from"), author, -1));
- }
- else {
- JsonObjectAppend(j, NewJsonPlainString(HKEY("from"), emailaddr, -1)); // FIXME do compound address string
- }
-
- if (!strcmp(buf, "text")) {
- while ((ctdl_readline(c, buf, sizeof(buf)) >= 0) && (strcmp(buf, "")) && (strcmp(buf, "000"))) {
- // rfc822 header parsing here
- if (!strncasecmp(buf, "Content-transfer-encoding:", 26)) {
- strcpy(content_transfer_encoding, &buf[26]);
- striplt(content_transfer_encoding);
- }
- if (!strncasecmp(buf, "Content-type:", 13)) {
- strcpy(content_type, &buf[13]);
- striplt(content_type);
- }
- }
- if (!strcmp(buf, "000")) { // if we have an empty message, don't try to read further
- raw_msg = NULL;
- }
- else {
- raw_msg = ctdl_readtextmsg(c);
- }
- }
- else {
- raw_msg = NULL;
- }
-
- if (raw_msg) {
- // These are the encodings we know how to handle. Decode in-place.
-
- if (!strcasecmp(content_transfer_encoding, "base64")) {
- StrBufDecodeBase64(raw_msg);
- }
- if (!strcasecmp(content_transfer_encoding, "quoted-printable")) {
- StrBufDecodeQP(raw_msg);
- }
-
- // At this point, raw_msg contains the decoded message.
- // Now run through the renderers we have available.
-
- if (!strncasecmp(content_type, "text/html", 9)) {
- sanitized_msg = html2html("UTF-8", 0, c->room, msgnum, raw_msg);
- }
- else if (!strncasecmp(content_type, "text/plain", 10)) {
- sanitized_msg = text2html("UTF-8", 0, c->room, msgnum, raw_msg);
- }
- else if (!strncasecmp(content_type, "text/x-citadel-variformat", 25)) {
- sanitized_msg = variformat2html(raw_msg);
- }
- else {
- sanitized_msg = NewStrBufPlain(HKEY("<i>No renderer for this content type</i><br>"));
- syslog(LOG_WARNING, "forum_view: no renderer for content type %s", content_type);
- }
- FreeStrBuf(&raw_msg);
-
- // If sanitized_msg is not NULL, we have rendered the message and can output it.
- if (sanitized_msg) {
- JsonObjectAppend(j, NewJsonString(HKEY("text"), sanitized_msg, NEWJSONSTRING_SMASHBUF));
- }
- else {
- syslog(LOG_WARNING, "forum_view: message %ld of content type %s converted to NULL", msgnum, content_type);
- }
- }
-
- StrBuf *sj = NewStrBuf();
- SerializeJson(sj, j, 1); // '1' == free the source object
-
- add_response_header(h, strdup("Content-type"), strdup("application/json"));
- h->response_code = 200;
- h->response_string = strdup("OK");
- h->response_body_length = StrLength(sj);
- h->response_body = SmashStrBuf(&sj);
-}
projects / citadel.git / blobdiff