4 * This is the main transaction loop of the web service. It maintains a
5 * persistent session to the Citadel server, handling HTTP WebCit requests as
6 * they arrive and presenting a user interface.
9 #define SHOW_ME_VAPPEND_PRINTF
12 #include "webserver.h"
18 * String to unset the cookie.
19 * Any date "in the past" will work, so I chose my birthday, right down to
20 * the exact minute. :)
22 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
24 HashList *HandlerHash = NULL;
26 void WebcitAddUrlHandler(const char * UrlString,
31 WebcitHandler *NewHandler;
33 if (HandlerHash == NULL)
34 HandlerHash = NewHash(1, NULL);
36 NewHandler = (WebcitHandler*) malloc(sizeof(WebcitHandler));
38 NewHandler->Flags = Flags;
39 Put(HandlerHash, UrlString, UrlSLen, NewHandler, NULL);
43 * remove escaped strings from i.e. the url string (like %20 for blanks)
45 long unescape_input(char *buf)
54 while ((buflen > 0) && (isspace(buf[buflen - 1]))){
64 /* don't let % chars through, rather truncate the input. */
74 sscanf(hex, "%02x", &b);
78 memmove(&buf[a + 1], &buf[a + 3], len);
88 void free_url(void *U)
90 urlcontent *u = (urlcontent*) U;
91 FreeStrBuf(&u->url_data);
96 * Extract variables from the URL.
98 void addurls(StrBuf *url)
100 const char *aptr, *bptr, *eptr, *up;
104 struct wcsession *WCC = WC;
106 if (WCC->urlstrings == NULL)
107 WCC->urlstrings = NewHash(1, NULL);
108 // buf = (char*) malloc (ulen + 1);
109 // memcpy(buf, url, ulen);
110 /// buf[ulen] = '\0';
111 eptr = ChrPtr(url) + StrLength(url);
113 while ((up < eptr) && (!IsEmptyStr(up))) {
115 while ((aptr < eptr) && (*aptr != '\0') && (*aptr != '='))
124 while ((bptr < eptr) && (*bptr != '\0')
125 && (*bptr != '&') && (*bptr != '?') && (*bptr != ' ')) {
129 keylen = aptr - up - 1; /* -1 -> '=' */
130 if(keylen > sizeof(u->url_key)) {
131 lprintf(1, "URLkey to long! [%s]", up);
135 u = (urlcontent *) malloc(sizeof(urlcontent));
136 memcpy(u->url_key, up, keylen);
137 u->url_key[keylen] = '\0';
139 lprintf(1, "URLkey to long! [%s]", up);
144 Put(WCC->urlstrings, u->url_key, keylen, u, free_url);
146 u->url_data = NewStrBufPlain(aptr, len);
147 StrBufUnescape(u->url_data, 1);
151 #ifdef DEBUG_URLSTRINGS
152 lprintf(9, "%s = [%ld] %s\n",
154 StrLength(u->url_data),
155 ChrPtr(u->url_data));
162 * free urlstring memory
166 DeleteHash(&WC->urlstrings);
170 * Diagnostic function to display the contents of all variables
175 struct wcsession *WCC = WC;
182 Cursor = GetNewHashPos ();
183 while (GetNextHashPos(WCC->urlstrings, Cursor, &HKLen, &HKey, &U)) {
185 wprintf("%38s = %s\n", u->url_key, ChrPtr(u->url_data));
190 * Return the value of a variable supplied to the current web page (from the url or a form)
193 const char *XBstr(const char *key, size_t keylen, size_t *len)
197 if ((WC->urlstrings != NULL) &&
198 GetHash(WC->urlstrings, key, keylen, &U)) {
199 *len = StrLength(((urlcontent *)U)->url_data);
200 return ChrPtr(((urlcontent *)U)->url_data);
208 const char *XBSTR(const char *key, size_t *len)
212 if ((WC->urlstrings != NULL) &&
213 GetHash(WC->urlstrings, key, strlen (key), &U)){
214 *len = StrLength(((urlcontent *)U)->url_data);
215 return ChrPtr(((urlcontent *)U)->url_data);
224 const char *BSTR(const char *key)
228 if ((WC->urlstrings != NULL) &&
229 GetHash(WC->urlstrings, key, strlen (key), &U))
230 return ChrPtr(((urlcontent *)U)->url_data);
235 const char *Bstr(const char *key, size_t keylen)
239 if ((WC->urlstrings != NULL) &&
240 GetHash(WC->urlstrings, key, keylen, &U))
241 return ChrPtr(((urlcontent *)U)->url_data);
246 const StrBuf *SBSTR(const char *key)
250 if ((WC->urlstrings != NULL) &&
251 GetHash(WC->urlstrings, key, strlen (key), &U))
252 return ((urlcontent *)U)->url_data;
257 const StrBuf *SBstr(const char *key, size_t keylen)
261 if ((WC->urlstrings != NULL) &&
262 GetHash(WC->urlstrings, key, keylen, &U))
263 return ((urlcontent *)U)->url_data;
268 long LBstr(const char *key, size_t keylen)
272 if ((WC->urlstrings != NULL) &&
273 GetHash(WC->urlstrings, key, keylen, &U))
274 return StrTol(((urlcontent *)U)->url_data);
279 long LBSTR(const char *key)
283 if ((WC->urlstrings != NULL) &&
284 GetHash(WC->urlstrings, key, strlen(key), &U))
285 return StrTol(((urlcontent *)U)->url_data);
290 int IBstr(const char *key, size_t keylen)
294 if ((WC->urlstrings != NULL) &&
295 GetHash(WC->urlstrings, key, keylen, &U))
296 return StrTol(((urlcontent *)U)->url_data);
301 int IBSTR(const char *key)
305 if ((WC->urlstrings != NULL) &&
306 GetHash(WC->urlstrings, key, strlen(key), &U))
307 return StrToi(((urlcontent *)U)->url_data);
312 int HaveBstr(const char *key, size_t keylen)
316 if ((WC->urlstrings != NULL) &&
317 GetHash(WC->urlstrings, key, keylen, &U))
318 return (StrLength(((urlcontent *)U)->url_data) != 0);
323 int HAVEBSTR(const char *key)
327 if ((WC->urlstrings != NULL) &&
328 GetHash(WC->urlstrings, key, strlen(key), &U))
329 return (StrLength(((urlcontent *)U)->url_data) != 0);
335 int YesBstr(const char *key, size_t keylen)
339 if ((WC->urlstrings != NULL) &&
340 GetHash(WC->urlstrings, key, keylen, &U))
341 return strcmp( ChrPtr(((urlcontent *)U)->url_data), "yes") == 0;
346 int YESBSTR(const char *key)
350 if ((WC->urlstrings != NULL) &&
351 GetHash(WC->urlstrings, key, strlen(key), &U))
352 return strcmp( ChrPtr(((urlcontent *)U)->url_data), "yes") == 0;
358 * web-printing funcion. uses our vsnprintf wrapper
360 void wprintf(const char *format,...)
362 struct wcsession *WCC = WC;
365 if (WCC->WBuf == NULL)
366 WCC->WBuf = NewStrBuf();
368 va_start(arg_ptr, format);
369 StrBufVAppendPrintf(WCC->WBuf, format, arg_ptr);
372 /// if (StrLength(WCC-WBuf) > 2048)
373 ///client_write(wbuf, strlen(wbuf));
377 * http-header-printing funcion. uses our vsnprintf wrapper
379 void hprintf(const char *format,...)
381 struct wcsession *WCC = WC;
384 va_start(arg_ptr, format);
385 StrBufVAppendPrintf(WCC->HBuf, format, arg_ptr);
388 /// if (StrLength(WCC-WBuf) > 2048)
389 ///client_write(wbuf, strlen(wbuf));
394 * wrap up an HTTP session, closes tags, etc.
396 * print_standard_html_footer should be set to:
397 * 0 to transmit only,
398 * 1 to append the main menu and closing tags,
399 * 2 to append the closing tags only.
401 void wDumpContent(int print_standard_html_footer)
403 if (print_standard_html_footer) {
404 wprintf("</div>\n"); /* end of "text" div */
405 do_template("trailing", NULL);
408 /* If we've been saving it all up for one big output burst,
409 * go ahead and do that now.
417 * Copy a string, escaping characters which have meaning in HTML.
419 * target target buffer
420 * strbuf source buffer
421 * nbsp If nonzero, spaces are converted to non-breaking spaces.
422 * nolinebreaks if set, linebreaks are removed from the string.
424 long stresc(char *target, long tSize, char *strbuf, int nbsp, int nolinebreaks)
426 char *aptr, *bptr, *eptr;
431 eptr = target + tSize - 6; // our biggest unit to put in...
434 while ((bptr < eptr) && !IsEmptyStr(aptr) ){
436 memcpy(bptr, "<", 4);
439 else if (*aptr == '>') {
440 memcpy(bptr, ">", 4);
443 else if (*aptr == '&') {
444 memcpy(bptr, "&", 5);
447 else if (*aptr == '\"') {
448 memcpy(bptr, """, 6);
451 else if (*aptr == '\'') {
452 memcpy(bptr, "'", 5);
455 else if (*aptr == LB) {
459 else if (*aptr == RB) {
463 else if (*aptr == QU) {
467 else if ((*aptr == 32) && (nbsp == 1)) {
468 memcpy(bptr, " ", 6);
471 else if ((*aptr == '\n') && (nolinebreaks)) {
472 *bptr='\0'; /* nothing */
474 else if ((*aptr == '\r') && (nolinebreaks)) {
475 *bptr='\0'; /* nothing */
484 if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
486 return (bptr - target);
490 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
492 StrEscAppend(WC->WBuf, NULL, strbuf, nbsp, nolinebreaks);
495 void StrEscputs1(const StrBuf *strbuf, int nbsp, int nolinebreaks)
497 StrEscAppend(WC->WBuf, strbuf, NULL, nbsp, nolinebreaks);
501 * static wrapper for ecsputs1
503 void escputs(char *strbuf)
505 escputs1(strbuf, 0, 0);
510 * static wrapper for ecsputs1
512 void StrEscPuts(const StrBuf *strbuf)
514 StrEscputs1(strbuf, 0, 0);
519 * urlescape buffer and print it to the client
521 void urlescputs(const char *strbuf)
523 StrBufUrlescAppend(WC->WBuf, NULL, strbuf);
527 * urlescape buffer and print it to the client
529 void UrlescPutStrBuf(const StrBuf *strbuf)
531 StrBufUrlescAppend(WC->WBuf, strbuf, NULL);
535 * urlescape buffer and print it as header
537 void hurlescputs(const char *strbuf)
539 StrBufUrlescAppend(WC->HBuf, NULL, strbuf);
544 * Copy a string, escaping characters for JavaScript strings.
546 void jsesc(char *target, size_t tlen, char *strbuf)
555 len = strlen (strbuf);
557 tend = target + tlen;
561 while (!IsEmptyStr(sptr) &&
567 else if (*sptr == '>')
569 else if (*sptr == '\'') {
575 else if (*sptr == '"') {
585 else if (*sptr == '&') {
602 * escape and print javascript
604 void jsescputs(char *strbuf)
608 jsesc(outbuf, SIZ, strbuf);
609 wprintf("%s", outbuf);
613 * print a string to the client after cleaning it with msgesc() and stresc()
615 void msgescputs1( char *strbuf)
619 if ((strbuf == NULL) || IsEmptyStr(strbuf))
621 OutBuf = NewStrBuf();
622 StrMsgEscAppend(OutBuf, NULL, strbuf);
623 StrEscAppend(WC->WBuf, OutBuf, NULL, 0, 0);
628 * print a string to the client after cleaning it with msgesc()
630 void msgescputs(char *strbuf) {
631 if ((strbuf != NULL) && !IsEmptyStr(strbuf))
632 StrMsgEscAppend(WC->WBuf, NULL, strbuf);
639 * Output HTTP headers and leading HTML for a page
641 void output_headers( int do_httpheaders, /* 1 = output HTTP headers */
642 int do_htmlhead, /* 1 = output HTML <head> section and <body> opener */
644 int do_room_banner, /* 0=no, 1=yes,
645 * 2 = I'm going to embed my own, so don't open the
646 * <div id="content"> either.
649 int unset_cookies, /* 1 = session is terminating, so unset the cookies */
650 int suppress_check, /* 1 = suppress check for instant messages */
651 int cache /* 1 = allow browser to cache this page */
656 hprintf("HTTP/1.1 200 OK\n");
657 http_datestring(httpnow, sizeof httpnow, time(NULL));
659 if (do_httpheaders) {
660 hprintf("Content-type: text/html; charset=utf-8\r\n"
662 "Connection: close\r\n",
663 PACKAGE_STRING, serv_info.serv_software
668 char httpTomorow[128];
670 http_datestring(httpTomorow, sizeof httpTomorow,
671 time(NULL) + 60 * 60 * 24 * 2);
673 hprintf("Pragma: public\r\n"
674 "Cache-Control: max-age=3600, must-revalidate\r\n"
675 "Last-modified: %s\r\n"
682 hprintf("Pragma: no-cache\r\n"
683 "Cache-Control: no-store\r\n"
688 stuff_to_cookie(cookie, 1024, WC->wc_session, WC->wc_username,
689 WC->wc_password, WC->wc_roomname);
692 hprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
694 hprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
695 if (server_cookie != NULL) {
696 hprintf("%s\n", server_cookie);
702 if (!access("static.local/webcit.css", R_OK)) {
703 svprintf(HKEY("CSSLOCAL"), WCS_STRING,
704 "<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"
707 do_template("head", NULL);
714 /* check for ImportantMessages (these display in a div overlaying the main screen) */
715 if (!IsEmptyStr(WC->ImportantMessage)) {
716 wprintf("<div id=\"important_message\">\n"
717 "<span class=\"imsg\">");
718 escputs(WC->ImportantMessage);
719 wprintf("</span><br />\n"
721 "<script type=\"text/javascript\">\n"
722 " setTimeout('hide_imsg_popup()', 5000); \n"
724 WC->ImportantMessage[0] = 0;
727 if ( (WC->logged_in) && (!unset_cookies) ) {
728 wprintf("<div id=\"iconbar\">");
729 do_selected_iconbar();
730 /** check for instant messages (these display in a new window) */
735 if (do_room_banner == 1) {
736 wprintf("<div id=\"banner\">\n");
737 embed_room_banner(NULL, navbar_default);
742 if (do_room_banner == 1) {
743 wprintf("<div id=\"content\">\n");
749 * Generic function to do an HTTP redirect. Easy and fun.
751 void http_redirect(const char *whichpage) {
752 hprintf("HTTP/1.1 302 Moved Temporarily\n");
753 hprintf("Location: %s\r\n", whichpage);
754 hprintf("URI: %s\r\n", whichpage);
755 hprintf("Content-type: text/html; charset=utf-8\r\n");
756 wprintf("<html><body>");
757 wprintf("Go <a href=\"%s\">here</A>.", whichpage);
758 wprintf("</body></html>\n");
765 * Output a piece of content to the web browser using conformant HTTP and MIME semantics
767 void http_transmit_thing(const char *content_type,
770 lprintf(9, "http_transmit_thing(%s)%s\n",
772 (is_static ? " (static)" : "")
774 output_headers(0, 0, 0, 0, 0, is_static);
776 hprintf("Content-type: %s\r\n"
778 "Connection: close\r\n",
786 * print menu box like used in the floor view or admin interface.
787 * This function takes pair of strings as va_args,
788 * Title Title string of the box
789 * Class CSS Class for the box
790 * nLines How many string pairs should we print? (URL, UrlText)
791 * ... Pairs of URL Strings and their Names
793 void print_menu_box(char* Title, char *Class, int nLines, ...)
798 svput("BOXTITLE", WCS_STRING, Title);
799 do_template("beginbox", NULL);
801 wprintf("<ul class=\"%s\">", Class);
803 va_start(arg_list, nLines);
804 for (i = 0; i < nLines; ++i)
806 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
807 wprintf((char *) va_arg(arg_list, char *));
808 wprintf("</a></li>\n");
812 wprintf("</a></li>\n");
816 do_template("endbox", NULL);
821 * dump out static pages from disk
823 void output_static(char *what)
829 const char *content_type;
833 fd = open(what, O_RDONLY);
835 lprintf(9, "output_static('%s') -- NOT FOUND --\n", what);
836 hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
837 hprintf("Content-Type: text/plain\r\n");
838 wprintf("Cannot open %s: %s\r\n", what, strerror(errno));
842 content_type = GuessMimeByFilename(what, len);
844 if (fstat(fd, &statbuf) == -1) {
845 lprintf(9, "output_static('%s') -- FSTAT FAILED --\n", what);
846 hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
847 hprintf("Content-Type: text/plain\r\n");
848 wprintf("Cannot fstat %s: %s\n", what, strerror(errno));
854 bytes = statbuf.st_size;
856 if (StrBufReadBLOB(WC->WBuf, &fd, 1, bytes, &Err) < 0)
858 if (fd > 0) close(fd);
859 lprintf(9, "output_static('%s') -- FREAD FAILED (%s) --\n", what, strerror(errno));
860 hprintf("HTTP/1.1 500 internal server error \r\n");
861 hprintf("Content-Type: text/plain\r\n");
868 lprintf(9, "output_static('%s') %s\n", what, content_type);
869 http_transmit_thing(content_type, 1);
871 if (yesbstr("force_close_session")) {
872 end_webcit_session();
877 * When the browser requests an image file from the Citadel server,
878 * this function is called to transmit it.
882 struct wcsession *WCC = WC;
885 const char *MimeType;
887 serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
888 serv_getln(buf, sizeof buf);
890 bytes = extract_long(&buf[4], 0);
892 /** Read it from the server */
894 if (read_server_binary(WCC->WBuf, bytes) > 0) {
896 serv_getln(buf, sizeof buf);
898 MimeType = GuessMimeType (ChrPtr(WCC->WBuf), StrLength(WCC->WBuf));
899 /** Write it to the browser */
900 if (!IsEmptyStr(MimeType))
902 http_transmit_thing(MimeType, 0);
906 /* hm... unknown mimetype? fallback to blank gif */
911 * Instead of an ugly 404, send a 1x1 transparent GIF
912 * when there's no such image on the server.
915 snprintf (blank_gif, SIZ, "%s%s", static_dirs[0], "/blank.gif");
916 output_static(blank_gif);
920 * Extract an embedded photo from a vCard for display on the client
922 void display_vcard_photo_img(void)
928 const char *contentType;
929 struct wcsession *WCC = WC;
931 msgnum = StrTol(WCC->UrlFragment1);
933 vcard = load_mimepart(msgnum,"1");
934 v = vcard_load(vcard);
936 photosrc = vcard_get_prop(v, "PHOTO", 1,0,0);
937 FlushStrBuf(WCC->WBuf);
938 StrBufAppendBufPlain(WCC->WBuf, photosrc, -1, 0);
939 if (StrBufDecodeBase64(WCC->WBuf) <= 0) {
940 FlushStrBuf(WCC->WBuf);
942 hprintf("HTTP/1.1 500 %s\n","Unable to get photo");
943 output_headers(0, 0, 0, 0, 0, 0);
944 hprintf("Content-Type: text/plain\r\n");
945 wprintf(_("Could Not decode vcard photo\n"));
949 contentType = GuessMimeType(ChrPtr(WCC->WBuf), StrLength(WCC->WBuf));
950 http_transmit_thing(contentType, 0);
956 * Generic function to output an arbitrary MIME part from an arbitrary
957 * message number on the server.
959 * msgnum Number of the item on the citadel server
960 * partnum The MIME part to be output
961 * force_download Nonzero to force set the Content-Type: header to "application/octet-stream"
963 void mimepart(const char *msgnum, const char *partnum, int force_download)
967 char content_type[256];
969 serv_printf("OPNA %s|%s", msgnum, partnum);
970 serv_getln(buf, sizeof buf);
972 bytes = extract_long(&buf[4], 0);
973 if (force_download) {
974 strcpy(content_type, "application/octet-stream");
977 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
979 output_headers(0, 0, 0, 0, 0, 0);
981 read_server_binary(WC->WBuf, bytes);
983 serv_getln(buf, sizeof buf);
984 http_transmit_thing(content_type, 0);
986 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
987 output_headers(0, 0, 0, 0, 0, 0);
988 hprintf("Content-Type: text/plain\r\n");
989 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
996 * Read any MIME part of a message, from the server, into memory.
998 char *load_mimepart(long msgnum, char *partnum)
1002 char content_type[SIZ];
1005 serv_printf("DLAT %ld|%s", msgnum, partnum);
1006 serv_getln(buf, sizeof buf);
1007 if (buf[0] == '6') {
1008 bytes = extract_long(&buf[4], 0);
1009 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
1011 content = malloc(bytes + 2);
1012 serv_read(content, bytes);
1014 content[bytes] = 0; /* null terminate for good measure */
1024 * Convenience functions to display a page containing only a string
1026 * titlebarcolor color of the titlebar of the frame
1027 * titlebarmsg text to display in the title bar
1028 * messagetext body of the box
1030 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
1032 hprintf("HTTP/1.1 200 OK\n");
1033 output_headers(1, 1, 2, 0, 0, 0);
1034 wprintf("<div id=\"banner\">\n");
1035 wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
1036 wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
1037 wprintf("</td></tr></table>\n");
1038 wprintf("</div>\n<div id=\"content\">\n");
1039 escputs(messagetext);
1041 wprintf("<hr />\n");
1047 * Display a blank page.
1049 void blank_page(void) {
1050 output_headers(1, 1, 0, 0, 0, 0);
1056 * A template has been requested
1058 void url_do_template(void) {
1059 const StrBuf *Tmpl = sbstr("template");
1061 output_headers(1, 0, 0, 0, 1, 0);
1062 DoTemplate(ChrPtr(Tmpl), StrLength(Tmpl), NULL, NULL, 0);
1069 * Offer to make any page the user's "start page."
1071 void offer_start_page(StrBuf *Target, int nArgs, WCTemplateToken *Token, void *Context, int ContextType) {
1072 wprintf("<a href=\"change_start_page?startpage=");
1073 urlescputs(WC->this_page);
1075 wprintf(_("Make this my start page"));
1078 wprintf("<br/><a href=\"rss?room=");
1079 urlescputs(WC->wc_roomname);
1080 wprintf("\" title=\"RSS 2.0 feed for ");
1081 escputs(WC->wc_roomname);
1082 wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
1088 * Change the user's start page
1090 void change_start_page(void) {
1092 if (bstr("startpage") == NULL) {
1093 safestrncpy(WC->ImportantMessage,
1094 _("You no longer have a start page selected."),
1095 sizeof WC->ImportantMessage);
1096 display_main_menu();
1100 set_preference("startpage", NewStrBufPlain(bstr("startpage"), -1), 1);
1102 output_headers(1, 1, 0, 0, 0, 0);
1103 do_template("newstartpage", NULL);
1110 * convenience function to indicate success
1112 void display_success(char *successmessage)
1114 convenience_page("007700", "OK", successmessage);
1119 * Authorization required page
1120 * This is probably temporary and should be revisited
1122 void authorization_required(const char *message)
1124 hprintf("HTTP/1.1 401 Authorization Required\r\n");
1125 hprintf("WWW-Authenticate: Basic realm=\"%s\"\r\n", serv_info.serv_humannode);
1126 hprintf("Content-Type: text/html\r\n");
1128 wprintf(_("Authorization Required"));
1129 wprintf("</h1>\r\n");
1130 wprintf(_("The resource you requested requires a valid username and password. "
1131 "You could not be logged in: %s\n"), message);
1137 * This function is called by the MIME parser to handle data uploaded by
1138 * the browser. Form data, uploaded files, and the data from HTTP PUT
1139 * operations (such as those found in GroupDAV) all arrive this way.
1141 * name Name of the item being uploaded
1142 * filename Filename of the item being uploaded
1143 * partnum MIME part identifier (not needed)
1144 * disp MIME content disposition (not needed)
1145 * content The actual data
1146 * cbtype MIME content-type
1147 * cbcharset Character set
1148 * length Content length
1149 * encoding MIME encoding type (not needed)
1150 * userdata Not used here
1152 void upload_handler(char *name, char *filename, char *partnum, char *disp,
1153 void *content, char *cbtype, char *cbcharset,
1154 size_t length, char *encoding, void *userdata)
1157 #ifdef DEBUG_URLSTRINGS
1158 lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n", name, cbtype, length);
1160 if (WC->urlstrings == NULL)
1161 WC->urlstrings = NewHash(1, NULL);
1164 if ( (length > 0) && (IsEmptyStr(cbtype)) ) {
1165 u = (urlcontent *) malloc(sizeof(urlcontent));
1167 safestrncpy(u->url_key, name, sizeof(u->url_key));
1168 u->url_data = NewStrBufPlain(content, length);
1170 Put(WC->urlstrings, u->url_key, strlen(u->url_key), u, free_url);
1171 #ifdef DEBUG_URLSTRINGS
1172 lprintf(9, "Key: <%s> len: [%ld] Data: <%s>\n",
1174 StrLength(u->url_data),
1175 ChrPtr(u->url_data));
1179 /** Uploaded files */
1180 if ( (length > 0) && (!IsEmptyStr(cbtype)) ) {
1181 WC->upload = malloc(length);
1182 if (WC->upload != NULL) {
1183 WC->upload_length = length;
1184 safestrncpy(WC->upload_filename, filename,
1185 sizeof(WC->upload_filename));
1186 safestrncpy(WC->upload_content_type, cbtype,
1187 sizeof(WC->upload_content_type));
1188 memcpy(WC->upload, content, length);
1191 lprintf(3, "malloc() failed: %s\n", strerror(errno));
1198 * Convenience functions to wrap around asynchronous ajax responses
1200 void begin_ajax_response(void) {
1201 struct wcsession *WCC = WC;
1203 FlushStrBuf(WCC->HBuf);
1204 output_headers(0, 0, 0, 0, 0, 0);
1206 hprintf("Content-type: text/html; charset=UTF-8\r\n"
1208 "Connection: close\r\n"
1215 * print ajax response footer
1217 void end_ajax_response(void) {
1222 * Wraps a Citadel server command in an AJAX transaction.
1224 void ajax_servcmd(void)
1227 char gcontent[1024];
1231 begin_ajax_response();
1233 serv_printf("%s", bstr("g_cmd"));
1234 serv_getln(buf, sizeof buf);
1235 wprintf("%s\n", buf);
1237 if (buf[0] == '8') {
1238 serv_printf("\n\n000");
1240 if ((buf[0] == '1') || (buf[0] == '8')) {
1241 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
1242 wprintf("%s\n", gcontent);
1246 if (buf[0] == '4') {
1247 text_to_server(bstr("g_input"));
1250 if (buf[0] == '6') {
1251 len = atol(&buf[4]);
1253 serv_read(junk, len);
1256 if (buf[0] == '7') {
1257 len = atol(&buf[4]);
1259 memset(junk, 0, len);
1260 serv_write(junk, len);
1264 end_ajax_response();
1267 * This is kind of an ugly hack, but this is the only place it can go.
1268 * If the command was GEXP, then the instant messenger window must be
1269 * running, so reset the "last_pager_check" watchdog timer so
1270 * that page_popup() doesn't try to open it a second time.
1272 if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
1273 WC->last_pager_check = time(NULL);
1279 * Helper function for the asynchronous check to see if we need
1280 * to open the instant messenger window.
1282 void seconds_since_last_gexp(void)
1286 if ( (time(NULL) - WC->last_pager_check) < 30) {
1292 serv_getln(buf, sizeof buf);
1293 if (buf[3] == '*') {
1303 * \brief Detects a 'mobile' user agent
1305 int is_mobile_ua(char *user_agent) {
1306 if (strstr(user_agent,"iPhone OS") != NULL) {
1308 } else if (strstr(user_agent,"Windows CE") != NULL) {
1310 } else if (strstr(user_agent,"SymbianOS") != NULL) {
1312 } else if (strstr(user_agent, "Opera Mobi") != NULL) {
1314 } else if (strstr(user_agent, "Firefox/2.0.0 Opera 9.51 Beta") != NULL) {
1315 // For some reason a new install of Opera 9.51beta decided to spoof.
1323 * Entry point for WebCit transaction
1325 void session_loop(HashList *HTTPHeaders, StrBuf *ReqLine, StrBuf *request_method, StrBuf *ReadBuf)
1327 const char *pch, *pchs, *pche;
1334 int a, nBackDots, nEmpty;
1335 int ContentLength = 0;
1336 StrBuf *ContentType = NULL;
1337 StrBuf *UrlLine = NULL;
1338 StrBuf *content = NULL;
1339 const char *content_end = NULL;
1340 char browser_host[256];
1341 char user_agent[256];
1347 * We stuff these with the values coming from the client cookies,
1348 * so we can use them to reconnect a timed out session if we have to.
1350 char c_username[SIZ];
1351 char c_password[SIZ];
1352 char c_roomname[SIZ];
1353 char c_httpauth_string[SIZ];
1354 char c_httpauth_user[SIZ];
1355 char c_httpauth_pass[SIZ];
1356 struct wcsession *WCC;
1358 safestrncpy(c_username, "", sizeof c_username);
1359 safestrncpy(c_password, "", sizeof c_password);
1360 safestrncpy(c_roomname, "", sizeof c_roomname);
1361 safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
1362 safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
1363 safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
1364 strcpy(browser_host, "");
1367 if (WCC->WBuf == NULL)
1368 WC->WBuf = NewStrBufPlain(NULL, 32768);
1369 FlushStrBuf(WCC->WBuf);
1371 if (WCC->HBuf == NULL)
1372 WCC->HBuf = NewStrBuf();
1373 FlushStrBuf(WCC->HBuf);
1375 WCC->upload_length = 0;
1379 /** Figure out the action */
1381 sizes[0] = sizeof action;
1384 index[a] = arg[a-1];
1385 sizes[a] = sizeof arg[a-1];
1387 //// index[9] = &foo; todo
1390 for ( a = 0; a < 9; ++a)
1392 extract_token(index[a], ChrPtr(ReqLine), a + 1, '/', sizes[a]);
1393 if (strstr(index[a], "?")) *strstr(index[a], "?") = 0;
1394 if (strstr(index[a], "&")) *strstr(index[a], "&") = 0;
1395 if (strstr(index[a], " ")) *strstr(index[a], " ") = 0;
1396 if ((index[a][0] == '.') && (index[a][1] == '.'))
1398 if (index[a][0] == '\0')
1403 if (GetHash(HTTPHeaders, HKEY("COOKIE"), &vLine) &&
1405 cookie_to_stuff((StrBuf *)vLine, NULL,
1406 c_username, sizeof c_username,
1407 c_password, sizeof c_password,
1408 c_roomname, sizeof c_roomname);
1410 if (GetHash(HTTPHeaders, HKEY("AUTHORIZATION"), &vLine) &&
1412 CtdlDecodeBase64(c_httpauth_string, ChrPtr((StrBuf*)vLine), StrLength((StrBuf*)vLine));
1413 extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1414 extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1416 if (GetHash(HTTPHeaders, HKEY("CONTENT-LENGTH"), &vLine) &&
1418 ContentLength = StrToi((StrBuf*)vLine);
1420 if (GetHash(HTTPHeaders, HKEY("CONTENT-TYPE"), &vLine) &&
1422 ContentType = (StrBuf*)vLine;
1424 if (GetHash(HTTPHeaders, HKEY("USER-AGENT"), &vLine) &&
1426 safestrncpy(user_agent, ChrPtr((StrBuf*)vLine), sizeof user_agent);
1428 if ((WCC->is_mobile < 0) && is_mobile_ua(&buf[12])) {
1437 GetHash(HTTPHeaders, HKEY("X-FORWARDED-HOST"), &vLine) &&
1439 safestrncpy(WCC->http_host, &buf[18], sizeof WCC->http_host);
1441 if (IsEmptyStr(WCC->http_host) &&
1442 GetHash(HTTPHeaders, HKEY("HOST"), &vLine) &&
1444 safestrncpy(WCC->http_host,
1445 ChrPtr((StrBuf*)vLine),
1446 sizeof WCC->http_host);
1449 if (GetHash(HTTPHeaders, HKEY("X-FORWARDED-FOR"), &vLine) &&
1451 safestrncpy(browser_host,
1452 ChrPtr((StrBuf*) vLine),
1453 sizeof browser_host);
1454 while (num_tokens(browser_host, ',') > 1) {
1455 remove_token(browser_host, 0, ',');
1457 striplt(browser_host);
1460 if (ContentLength > 0) {
1461 content = NewStrBuf();
1462 StrBufPrintf(content, "Content-type: %s\n"
1463 "Content-length: %d\n\n",
1464 ChrPtr(ContentType), ContentLength);
1466 hprintf("Content-type: %s\n"
1467 "Content-length: %d\n\n",
1468 ContentType, ContentLength);
1470 body_start = StrLength(content);
1472 /** Read the entire input data at once. */
1473 client_read(&WCC->http_sock, content, ReadBuf, ContentLength);
1475 if (!strncasecmp(ChrPtr(ContentType), "application/x-www-form-urlencoded", 33)) {
1476 StrBufCutLeft(content, body_start);
1478 } else if (!strncasecmp(ChrPtr(ContentType), "multipart", 9)) {
1479 content_end = ChrPtr(content) + ContentLength + body_start;
1480 mime_parser(ChrPtr(content), content_end, *upload_handler, NULL, NULL, NULL, 0);
1486 /* make a note of where we are in case the user wants to save it */
1487 safestrncpy(WCC->this_page, ChrPtr(ReqLine), sizeof(WCC->this_page));
1488 remove_token(WCC->this_page, 2, ' ');
1489 remove_token(WCC->this_page, 0, ' ');
1491 /* If there are variables in the URL, we must grab them now */
1492 UrlLine = NewStrBufDup(ReqLine);
1493 len = StrLength(UrlLine);
1494 pch = pchs = ChrPtr(UrlLine);
1496 while (pch < pche) {
1497 if ((*pch == '?') || (*pch == '&')) {
1498 StrBufCutLeft(UrlLine, pch - pchs + 1);
1504 FreeStrBuf(&UrlLine);
1506 /* If it's a "force 404" situation then display the error and bail. */
1507 if (!strcmp(action, "404")) {
1508 hprintf("HTTP/1.1 404 Not found\r\n");
1509 hprintf("Content-Type: text/plain\r\n");
1510 wprintf("Not found\r\n");
1512 goto SKIP_ALL_THIS_CRAP;
1515 /* Static content can be sent without connecting to Citadel. */
1517 for (a=0; a<ndirs && ! is_static; ++a) {
1518 if (!strcasecmp(action, (char*)static_content_dirs[a])) { /* map web to disk location */
1526 snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1527 static_dirs[n_static],
1528 index[1], index[2], index[3], index[4], index[5], index[6], index[7]);
1529 for (a=0; a<8; ++a) {
1530 if (buf[strlen(buf)-1] == '/') {
1531 buf[strlen(buf)-1] = 0;
1534 for (a = 0; a < strlen(buf); ++a) {
1535 if (isspace(buf[a])) {
1543 lprintf(9, "Suspicious request. Ignoring.");
1544 hprintf("HTTP/1.1 404 Security check failed\r\n");
1545 hprintf("Content-Type: text/plain\r\n");
1546 wprintf("You have sent a malformed or invalid request.\r\n");
1549 goto SKIP_ALL_THIS_CRAP; /* Don't try to connect */
1552 /* If the client sent a nonce that is incorrect, kill the request. */
1553 if (strlen(bstr("nonce")) > 0) {
1554 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
1555 bstr("nonce"), WCC->nonce);
1556 if (ibstr("nonce") != WCC->nonce) {
1557 lprintf(9, "Ignoring request with mismatched nonce.\n");
1558 hprintf("HTTP/1.1 404 Security check failed\r\n");
1559 hprintf("Content-Type: text/plain\r\n");
1560 wprintf("Security check failed.\r\n");
1562 goto SKIP_ALL_THIS_CRAP;
1567 * If we're not connected to a Citadel server, try to hook up the
1570 if (!WCC->connected) {
1571 if (!strcasecmp(ctdlhost, "uds")) {
1572 /* unix domain socket */
1573 snprintf(buf, SIZ, "%s/citadel.socket", ctdlport);
1574 WCC->serv_sock = uds_connectsock(buf);
1578 WCC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1581 if (WCC->serv_sock < 0) {
1583 goto SKIP_ALL_THIS_CRAP;
1587 serv_getln(buf, sizeof buf); /** get the server welcome message */
1590 * From what host is our user connecting? Go with
1591 * the host at the other end of the HTTP socket,
1592 * unless we are following X-Forwarded-For: headers
1593 * and such a header has already turned up something.
1595 if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1596 locate_host(browser_host, WCC->http_sock);
1599 get_serv_info(browser_host, user_agent);
1600 if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1601 wprintf(_("You are connected to a Citadel "
1602 "server running Citadel %d.%02d. \n"
1603 "In order to run this version of WebCit "
1604 "you must also have Citadel %d.%02d or"
1606 serv_info.serv_rev_level / 100,
1607 serv_info.serv_rev_level % 100,
1608 MINIMUM_CIT_VERSION / 100,
1609 MINIMUM_CIT_VERSION % 100
1611 end_webcit_session();
1612 goto SKIP_ALL_THIS_CRAP;
1616 ////////todo: restore language in this case
1618 * Functions which can be performed without logging in
1620 if (!strcasecmp(action, "listsub")) {
1622 goto SKIP_ALL_THIS_CRAP;
1624 if (!strcasecmp(action, "freebusy")) {
1625 do_freebusy(ChrPtr(ReqLine));
1626 goto SKIP_ALL_THIS_CRAP;
1630 * If we're not logged in, but we have HTTP Authentication data,
1631 * try logging in to Citadel using that.
1633 if ((!WCC->logged_in)
1634 && (strlen(c_httpauth_user) > 0)
1635 && (strlen(c_httpauth_pass) > 0)) {
1636 serv_printf("USER %s", c_httpauth_user);
1637 serv_getln(buf, sizeof buf);
1638 if (buf[0] == '3') {
1639 serv_printf("PASS %s", c_httpauth_pass);
1640 serv_getln(buf, sizeof buf);
1641 if (buf[0] == '2') {
1642 become_logged_in(c_httpauth_user,
1643 c_httpauth_pass, buf);
1644 safestrncpy(WCC->httpauth_user, c_httpauth_user, sizeof WCC->httpauth_user);
1645 safestrncpy(WCC->httpauth_pass, c_httpauth_pass, sizeof WCC->httpauth_pass);
1647 /* Should only display when password is wrong */
1648 authorization_required(&buf[4]);
1649 goto SKIP_ALL_THIS_CRAP;
1654 /* This needs to run early */
1656 if (!strcasecmp(action, "rss")) {
1657 display_rss(bstr("room"), request_method);
1658 goto SKIP_ALL_THIS_CRAP;
1663 * The GroupDAV stuff relies on HTTP authentication instead of
1664 * our session's authentication.
1666 if (!strncasecmp(action, "groupdav", 8)) {
1667 groupdav_main(HTTPHeaders,
1668 ReqLine, request_method,
1669 ContentType, /* do GroupDAV methods */
1670 ContentLength, content, body_start);
1671 if (!WCC->logged_in) {
1672 WCC->killthis = 1; /* If not logged in, don't */
1673 } /* keep the session active */
1674 goto SKIP_ALL_THIS_CRAP;
1679 * Automatically send requests with any method other than GET or
1680 * POST to the GroupDAV code as well.
1682 if ((strcasecmp(ChrPtr(request_method), "GET")) && (strcasecmp(ChrPtr(request_method), "POST"))) {
1683 groupdav_main(HTTPHeaders, ReqLine,
1684 request_method, ContentType, /** do GroupDAV methods */
1685 ContentLength, content, body_start);
1686 if (!WCC->logged_in) {
1687 WCC->killthis = 1; /** If not logged in, don't */
1688 } /** keep the session active */
1689 goto SKIP_ALL_THIS_CRAP;
1693 * If we're not logged in, but we have username and password cookies
1694 * supplied by the browser, try using them to log in.
1696 if ((!WCC->logged_in)
1697 && (!IsEmptyStr(c_username))
1698 && (!IsEmptyStr(c_password))) {
1699 serv_printf("USER %s", c_username);
1700 serv_getln(buf, sizeof buf);
1701 if (buf[0] == '3') {
1702 serv_printf("PASS %s", c_password);
1703 serv_getln(buf, sizeof buf);
1704 if (buf[0] == '2') {
1706 become_logged_in(c_username, c_password, buf);
1707 if (get_preference("language", &Lang)) {
1708 set_selected_language(ChrPtr(Lang));
1709 go_selected_language(); /* set locale */
1715 * If we don't have a current room, but a cookie specifying the
1716 * current room is supplied, make an effort to go there.
1718 if ((IsEmptyStr(WCC->wc_roomname)) && (!IsEmptyStr(c_roomname))) {
1719 serv_printf("GOTO %s", c_roomname);
1720 serv_getln(buf, sizeof buf);
1721 if (buf[0] == '2') {
1722 safestrncpy(WCC->wc_roomname, c_roomname, sizeof WCC->wc_roomname);
1726 if (!strcasecmp(action, "image")) {
1728 } else if (!strcasecmp(action, "display_mime_icon")) {
1729 display_mime_icon();
1733 WebcitHandler *Handler;
1735 GetHash(HandlerHash, action, strlen(action) /* TODO*/, &vHandler),
1736 Handler = (WebcitHandler*) vHandler;
1737 if (Handler != NULL) {
1738 if (!WCC->logged_in && ((Handler->Flags & ANONYMOUS) == 0)) {
1739 display_login(NULL);
1742 if((Handler->Flags & NEED_URL)) {
1743 if (WCC->UrlFragment1 == NULL)
1744 WCC->UrlFragment1 = NewStrBuf();
1745 if (WCC->UrlFragment2 == NULL)
1746 WCC->UrlFragment2 = NewStrBuf();
1747 StrBufPrintf(WCC->UrlFragment1, "%s", index[1]);
1748 StrBufPrintf(WCC->UrlFragment2, "%s", index[2]);
1750 if ((Handler->Flags & AJAX) != 0)
1751 begin_ajax_response();
1753 if ((Handler->Flags & AJAX) != 0)
1754 end_ajax_response();
1757 /* When all else fais, display the main menu. */
1759 if (!WCC->logged_in)
1760 display_login(NULL);
1762 display_main_menu();
1767 if (content != NULL) {
1768 FreeStrBuf(&content);
1772 if (WCC->upload_length > 0) {
1774 WCC->upload_length = 0;
1780 * Replacement for sleep() that uses select() in order to avoid SIGALRM
1782 void sleeeeeeeeeep(int seconds)
1786 tv.tv_sec = seconds;
1788 select(0, NULL, NULL, NULL, &tv);
1791 void diagnostics(void)
1793 output_headers(1, 1, 1, 0, 0, 0);
1794 wprintf("Session: %d<hr />\n", WC->wc_session);
1795 wprintf("Command: <br /><PRE>\n");
1796 StrEscPuts(WC->UrlFragment1);
1797 wprintf("<br />\n");
1798 StrEscPuts(WC->UrlFragment2);
1799 wprintf("</PRE><hr />\n");
1800 wprintf("Variables: <br /><PRE>\n");
1802 wprintf("</PRE><hr />\n");
1806 void view_mimepart(void) {
1807 mimepart(ChrPtr(WC->UrlFragment1),
1808 ChrPtr(WC->UrlFragment2),
1812 void download_mimepart(void) {
1813 mimepart(ChrPtr(WC->UrlFragment1),
1814 ChrPtr(WC->UrlFragment2),
1819 int ConditionalImportantMesage(WCTemplateToken *Tokens, void *Context, int ContextType)
1821 struct wcsession *WCC = WC;
1823 return (!IsEmptyStr(WCC->ImportantMessage));
1828 void tmplput_importantmessage(StrBuf *Target, int nArgs, WCTemplateToken *Tokens, void *Context, int ContextType)
1830 struct wcsession *WCC = WC;
1833 StrEscAppend(Target, NULL, WCC->ImportantMessage, 0, 0);
1834 WCC->ImportantMessage[0] = '\0';
1838 int ConditionalBstr(WCTemplateToken *Tokens, void *Context, int ContextType)
1840 if(Tokens->nParameters == 1)
1841 return HaveBstr(Tokens->Params[0]->Start,
1842 Tokens->Params[0]->len);
1844 return strcmp(Bstr(Tokens->Params[0]->Start,
1845 Tokens->Params[0]->len),
1846 Tokens->Params[1]->Start) == 0;
1849 void tmplput_bstr(StrBuf *Target, int nArgs, WCTemplateToken *Tokens, void *Context, int ContextType)
1851 StrBufAppendBuf(Target,
1852 SBstr(Tokens->Params[0]->Start,
1853 Tokens->Params[0]->len), 0);
1860 WebcitAddUrlHandler(HKEY("blank"), blank_page, ANONYMOUS);
1861 WebcitAddUrlHandler(HKEY("do_template"), url_do_template, ANONYMOUS);
1862 WebcitAddUrlHandler(HKEY("sslg"), seconds_since_last_gexp, AJAX);
1863 WebcitAddUrlHandler(HKEY("ajax_servcmd"), ajax_servcmd, 0);
1864 WebcitAddUrlHandler(HKEY("change_start_page"), change_start_page, 0);
1865 WebcitAddUrlHandler(HKEY("toggle_self_service"), toggle_self_service, 0);
1866 WebcitAddUrlHandler(HKEY("vcardphoto"), display_vcard_photo_img, NEED_URL);
1867 WebcitAddUrlHandler(HKEY("mimepart"), view_mimepart, NEED_URL);
1868 WebcitAddUrlHandler(HKEY("mimepart_download"), download_mimepart, NEED_URL);
1869 WebcitAddUrlHandler(HKEY("diagnostics"), diagnostics, NEED_URL);
1871 RegisterConditional(HKEY("COND:IMPMSG"), 0, ConditionalImportantMesage, CTX_NONE);
1872 RegisterConditional(HKEY("COND:BSTR"), 1, ConditionalBstr, CTX_NONE);
1873 RegisterNamespace("BSTR", 1, 2, tmplput_bstr, CTX_NONE);
1874 RegisterNamespace("IMPORTANTMESSAGE", 0, 0, tmplput_importantmessage, CTX_NONE);
1875 RegisterNamespace("OFFERSTARTPAGE", 0, 0, offer_start_page, CTX_NONE);