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;
96 * Extract variables from the URL.
98 void addurls(char *url, long ulen)
100 char *aptr, *bptr, *eptr;
105 struct wcsession *WCC = WC;
107 if (WCC->urlstrings == NULL)
108 WCC->urlstrings = NewHash(1, NULL);
109 buf = (char*) malloc (ulen + 1);
110 memcpy(buf, url, ulen);
114 while ((up < eptr) && (!IsEmptyStr(up))) {
116 while ((aptr < eptr) && (*aptr != '\0') && (*aptr != '='))
123 while ((bptr < eptr) && (*bptr != '\0')
124 && (*bptr != '&') && (*bptr != '?') && (*bptr != ' ')) {
128 u = (urlcontent *) malloc(sizeof(urlcontent));
130 keylen = safestrncpy(u->url_key, up, sizeof u->url_key);
132 lprintf(1, "URLkey to long! [%s]", up);
136 Put(WCC->urlstrings, u->url_key, keylen, u, free_url);
138 u->url_data = malloc(len + 2);
139 safestrncpy(u->url_data, aptr, len + 2);
140 u->url_data_size = unescape_input(u->url_data);
141 u->url_data[u->url_data_size] = '\0';
144 #ifdef DEBUG_URLSTRINGS
145 lprintf(9, "%s = [%ld] %s\n", u->url_key, u->url_data_size, u->url_data);
152 * free urlstring memory
156 DeleteHash(&WC->urlstrings);
160 * Diagnostic function to display the contents of all variables
165 struct wcsession *WCC = WC;
172 Cursor = GetNewHashPos ();
173 while (GetNextHashPos(WCC->urlstrings, Cursor, &HKLen, &HKey, &U)) {
175 wprintf("%38s = %s\n", u->url_key, u->url_data);
180 * Return the value of a variable supplied to the current web page (from the url or a form)
183 const char *XBstr(char *key, size_t keylen, size_t *len)
187 if ((WC->urlstrings != NULL) &&
188 GetHash(WC->urlstrings, key, keylen, &U)) {
189 *len = ((urlcontent *)U)->url_data_size;
190 return ((urlcontent *)U)->url_data;
198 const char *XBSTR(char *key, size_t *len)
202 if ((WC->urlstrings != NULL) &&
203 GetHash(WC->urlstrings, key, strlen (key), &U)){
204 *len = ((urlcontent *)U)->url_data_size;
205 return ((urlcontent *)U)->url_data;
214 const char *BSTR(char *key)
218 if ((WC->urlstrings != NULL) &&
219 GetHash(WC->urlstrings, key, strlen (key), &U))
220 return ((urlcontent *)U)->url_data;
225 const char *Bstr(char *key, size_t keylen)
229 if ((WC->urlstrings != NULL) &&
230 GetHash(WC->urlstrings, key, keylen, &U))
231 return ((urlcontent *)U)->url_data;
236 long LBstr(char *key, size_t keylen)
240 if ((WC->urlstrings != NULL) &&
241 GetHash(WC->urlstrings, key, keylen, &U))
242 return atol(((urlcontent *)U)->url_data);
247 long LBSTR(char *key)
251 if ((WC->urlstrings != NULL) &&
252 GetHash(WC->urlstrings, key, strlen(key), &U))
253 return atol(((urlcontent *)U)->url_data);
258 int IBstr(char *key, size_t keylen)
262 if ((WC->urlstrings != NULL) &&
263 GetHash(WC->urlstrings, key, keylen, &U))
264 return atoi(((urlcontent *)U)->url_data);
273 if ((WC->urlstrings != NULL) &&
274 GetHash(WC->urlstrings, key, strlen(key), &U))
275 return atoi(((urlcontent *)U)->url_data);
280 int HaveBstr(char *key, size_t keylen)
284 if ((WC->urlstrings != NULL) &&
285 GetHash(WC->urlstrings, key, keylen, &U))
286 return ((urlcontent *)U)->url_data_size != 0;
291 int HAVEBSTR(char *key)
295 if ((WC->urlstrings != NULL) &&
296 GetHash(WC->urlstrings, key, strlen(key), &U))
297 return ((urlcontent *)U)->url_data_size != 0;
303 int YesBstr(char *key, size_t keylen)
307 if ((WC->urlstrings != NULL) &&
308 GetHash(WC->urlstrings, key, keylen, &U))
309 return strcmp( ((urlcontent *)U)->url_data, "yes") == 0;
314 int YESBSTR(char *key)
318 if ((WC->urlstrings != NULL) &&
319 GetHash(WC->urlstrings, key, strlen(key), &U))
320 return strcmp( ((urlcontent *)U)->url_data, "yes") == 0;
326 * web-printing funcion. uses our vsnprintf wrapper
328 void wprintf(const char *format,...)
330 struct wcsession *WCC = WC;
333 if (WCC->WBuf == NULL)
334 WCC->WBuf = NewStrBuf();
336 va_start(arg_ptr, format);
337 StrBufVAppendPrintf(WCC->WBuf, format, arg_ptr);
340 /// if (StrLength(WCC-WBuf) > 2048)
341 ///client_write(wbuf, strlen(wbuf));
345 * http-header-printing funcion. uses our vsnprintf wrapper
347 void hprintf(const char *format,...)
349 struct wcsession *WCC = WC;
352 va_start(arg_ptr, format);
353 StrBufVAppendPrintf(WCC->HBuf, format, arg_ptr);
356 /// if (StrLength(WCC-WBuf) > 2048)
357 ///client_write(wbuf, strlen(wbuf));
362 * wrap up an HTTP session, closes tags, etc.
364 * print_standard_html_footer should be set to:
365 * 0 to transmit only,
366 * 1 to append the main menu and closing tags,
367 * 2 to append the closing tags only.
369 void wDumpContent(int print_standard_html_footer)
371 if (print_standard_html_footer) {
372 wprintf("</div>\n"); /* end of "text" div */
373 do_template("trailing");
376 /* If we've been saving it all up for one big output burst,
377 * go ahead and do that now.
384 * Copy a string, escaping characters which have meaning in HTML.
386 * target target buffer
387 * strbuf source buffer
388 * nbsp If nonzero, spaces are converted to non-breaking spaces.
389 * nolinebreaks if set, linebreaks are removed from the string.
391 long stresc(char *target, long tSize, char *strbuf, int nbsp, int nolinebreaks)
393 char *aptr, *bptr, *eptr;
398 eptr = target + tSize - 6; // our biggest unit to put in...
400 while ((bptr < eptr) && !IsEmptyStr(aptr) ){
402 memcpy(bptr, "<", 4);
405 else if (*aptr == '>') {
406 memcpy(bptr, ">", 4);
409 else if (*aptr == '&') {
410 memcpy(bptr, "&", 5);
413 else if (*aptr == '\"') {
414 memcpy(bptr, """, 6);
417 else if (*aptr == '\'') {
418 memcpy(bptr, "'", 5);
421 else if (*aptr == LB) {
425 else if (*aptr == RB) {
429 else if (*aptr == QU) {
433 else if ((*aptr == 32) && (nbsp == 1)) {
434 memcpy(bptr, " ", 6);
437 else if ((*aptr == '\n') && (nolinebreaks)) {
438 *bptr='\0'; /* nothing */
440 else if ((*aptr == '\r') && (nolinebreaks)) {
441 *bptr='\0'; /* nothing */
450 if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
452 return (bptr - target);
455 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
460 if (strbuf == NULL) return;
461 Siz = (3 * strlen(strbuf)) + SIZ ;
463 stresc(buf, Siz, strbuf, nbsp, nolinebreaks);
469 * static wrapper for ecsputs1
471 void escputs(char *strbuf)
473 escputs1(strbuf, 0, 0);
478 * urlescape buffer and print it to the client
480 void urlescputs(char *strbuf)
484 urlesc(outbuf, SIZ, strbuf);
485 wprintf("%s", outbuf);
490 * Copy a string, escaping characters for JavaScript strings.
492 void jsesc(char *target, size_t tlen, char *strbuf)
501 len = strlen (strbuf);
503 tend = target + tlen;
507 while (!IsEmptyStr(sptr) &&
513 else if (*sptr == '>')
515 else if (*sptr == '\'') {
521 else if (*sptr == '"') {
531 else if (*sptr == '&') {
548 * escape and print javascript
550 void jsescputs(char *strbuf)
554 jsesc(outbuf, SIZ, strbuf);
555 wprintf("%s", outbuf);
559 * Copy a string, escaping characters for message text hold
561 void msgesc(char *target, size_t tlen, char *strbuf)
570 len = strlen (strbuf);
572 tend = target + tlen;
576 while (!IsEmptyStr(sptr) &&
582 else if (*sptr == '\r')
584 else if (*sptr == '\'') {
601 * print a string to the client after cleaning it with msgesc() and stresc()
603 void msgescputs1( char *strbuf)
609 if (strbuf == NULL) return;
610 buflen = 3 * strlen(strbuf) + SIZ;
611 outbuf = malloc( buflen);
612 outbuf2 = malloc( buflen);
613 msgesc(outbuf, buflen, strbuf);
614 stresc(outbuf2, buflen, outbuf, 0, 0);
615 wprintf("%s", outbuf2);
621 * print a string to the client after cleaning it with msgesc()
623 void msgescputs(char *strbuf) {
627 if (strbuf == NULL) return;
628 len = (3 * strlen(strbuf)) + SIZ;
629 outbuf = malloc(len);
630 msgesc(outbuf, len, strbuf);
631 wprintf("%s", outbuf);
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\">"
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 output_headers(0, 0, 0, 0, 0, is_static);
772 hprintf("Content-type: %s\r\n"
774 "Connection: close\r\n",
782 * print menu box like used in the floor view or admin interface.
783 * This function takes pair of strings as va_args,
784 * Title Title string of the box
785 * Class CSS Class for the box
786 * nLines How many string pairs should we print? (URL, UrlText)
787 * ... Pairs of URL Strings and their Names
789 void print_menu_box(char* Title, char *Class, int nLines, ...)
794 svput("BOXTITLE", WCS_STRING, Title);
795 do_template("beginbox");
797 wprintf("<ul class=\"%s\">", Class);
799 va_start(arg_list, nLines);
800 for (i = 0; i < nLines; ++i)
802 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
803 wprintf((char *) va_arg(arg_list, char *));
804 wprintf("</a></li>\n");
808 wprintf("</a></li>\n");
812 do_template("endbox");
817 * dump out static pages from disk
819 void output_static(char *what)
825 const char *content_type;
829 fd = open(what, O_RDONLY);
831 lprintf(9, "output_static('%s') -- NOT FOUND --\n", what);
832 hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
833 hprintf("Content-Type: text/plain\r\n");
834 wprintf("Cannot open %s: %s\r\n", what, strerror(errno));
838 content_type = GuessMimeByFilename(what, len);
840 if (fstat(fd, &statbuf) == -1) {
841 lprintf(9, "output_static('%s') -- FSTAT FAILED --\n", what);
842 hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
843 hprintf("Content-Type: text/plain\r\n");
844 wprintf("Cannot fstat %s: %s\n", what, strerror(errno));
850 bytes = statbuf.st_size;
852 if (StrBufReadBLOB(WC->WBuf, &fd, 1, bytes, &Err) < 0)
854 if (fd > 0) close(fd);
855 lprintf(9, "output_static('%s') -- FREAD FAILED (%s) --\n", what, strerror(errno));
856 hprintf("HTTP/1.1 500 internal server error \r\n");
857 hprintf("Content-Type: text/plain\r\n");
864 lprintf(9, "output_static('%s') %s\n", what, content_type);
865 http_transmit_thing(content_type, 1);
867 if (yesbstr("force_close_session")) {
868 end_webcit_session();
873 * When the browser requests an image file from the Citadel server,
874 * this function is called to transmit it.
878 struct wcsession *WCC = WC;
880 char *xferbuf = NULL;
882 const char *MimeType;
884 serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
885 serv_getln(buf, sizeof buf);
887 bytes = extract_long(&buf[4], 0);
888 xferbuf = malloc(bytes + 2);
890 /** Read it from the server */
892 if (read_server_binary(WCC->WBuf, bytes) > 0) {
894 serv_getln(buf, sizeof buf);
896 MimeType = GuessMimeType (ChrPtr(WCC->WBuf), StrLength(WCC->WBuf));
897 /** Write it to the browser */
898 if (!IsEmptyStr(MimeType))
900 http_transmit_thing(MimeType, 0);
904 /* hm... unknown mimetype? fallback to blank gif */
909 * Instead of an ugly 404, send a 1x1 transparent GIF
910 * when there's no such image on the server.
913 snprintf (blank_gif, SIZ, "%s%s", static_dirs[0], "/blank.gif");
914 output_static(blank_gif);
918 * Extract an embedded photo from a vCard for display on the client
920 void display_vcard_photo_img(void)
926 const char *contentType;
927 struct wcsession *WCC = WC;
929 msgnum = StrTol(WCC->UrlFragment1);
931 vcard = load_mimepart(msgnum,"1");
932 v = vcard_load(vcard);
934 photosrc = vcard_get_prop(v, "PHOTO", 1,0,0);
935 FlushStrBuf(WCC->WBuf);
936 StrBufAppendBufPlain(WCC->WBuf, photosrc, -1, 0);
937 if (StrBufDecodeBase64(WCC->WBuf) <= 0) {
938 FlushStrBuf(WCC->WBuf);
940 hprintf("HTTP/1.1 500 %s\n","Unable to get photo");
941 output_headers(0, 0, 0, 0, 0, 0);
942 hprintf("Content-Type: text/plain\r\n");
943 wprintf(_("Could Not decode vcard photo\n"));
947 contentType = GuessMimeType(ChrPtr(WCC->WBuf), StrLength(WCC->WBuf));
948 http_transmit_thing(contentType, 0);
954 * Generic function to output an arbitrary MIME part from an arbitrary
955 * message number on the server.
957 * msgnum Number of the item on the citadel server
958 * partnum The MIME part to be output
959 * force_download Nonzero to force set the Content-Type: header to "application/octet-stream"
961 void mimepart(const char *msgnum, const char *partnum, int force_download)
965 char content_type[256];
966 char *content = NULL;
968 serv_printf("OPNA %s|%s", msgnum, partnum);
969 serv_getln(buf, sizeof buf);
971 bytes = extract_long(&buf[4], 0);
972 content = malloc(bytes + 2);
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]);
997 * Read any MIME part of a message, from the server, into memory.
999 char *load_mimepart(long msgnum, char *partnum)
1003 char content_type[SIZ];
1006 serv_printf("DLAT %ld|%s", msgnum, partnum);
1007 serv_getln(buf, sizeof buf);
1008 if (buf[0] == '6') {
1009 bytes = extract_long(&buf[4], 0);
1010 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
1012 content = malloc(bytes + 2);
1013 serv_read(content, bytes);
1015 content[bytes] = 0; /* null terminate for good measure */
1026 * Convenience functions to display a page containing only a string
1028 * titlebarcolor color of the titlebar of the frame
1029 * titlebarmsg text to display in the title bar
1030 * messagetext body of the box
1032 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
1034 hprintf("HTTP/1.1 200 OK\n");
1035 output_headers(1, 1, 2, 0, 0, 0);
1036 wprintf("<div id=\"banner\">\n");
1037 wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
1038 wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
1039 wprintf("</td></tr></table>\n");
1040 wprintf("</div>\n<div id=\"content\">\n");
1041 escputs(messagetext);
1043 wprintf("<hr />\n");
1049 * Display a blank page.
1051 void blank_page(void) {
1052 output_headers(1, 1, 0, 0, 0, 0);
1058 * A template has been requested
1060 void url_do_template(void) {
1061 do_template(bstr("template"));
1067 * Offer to make any page the user's "start page."
1069 void offer_start_page(void) {
1070 wprintf("<a href=\"change_start_page?startpage=");
1071 urlescputs(WC->this_page);
1073 wprintf(_("Make this my start page"));
1076 wprintf("<br/><a href=\"rss?room=");
1077 urlescputs(WC->wc_roomname);
1078 wprintf("\" title=\"RSS 2.0 feed for ");
1079 escputs(WC->wc_roomname);
1080 wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
1086 * Change the user's start page
1088 void change_start_page(void) {
1090 if (bstr("startpage") == NULL) {
1091 safestrncpy(WC->ImportantMessage,
1092 _("You no longer have a start page selected."),
1093 sizeof WC->ImportantMessage);
1094 display_main_menu();
1098 set_preference("startpage", NewStrBufPlain(bstr("startpage"), -1), 1);
1100 output_headers(1, 1, 0, 0, 0, 0);
1101 do_template("newstartpage");
1108 * convenience function to indicate success
1110 void display_success(char *successmessage)
1112 convenience_page("007700", "OK", successmessage);
1117 * Authorization required page
1118 * This is probably temporary and should be revisited
1120 void authorization_required(const char *message)
1122 hprintf("HTTP/1.1 401 Authorization Required\r\n");
1123 hprintf("WWW-Authenticate: Basic realm=\"%s\"\r\n", serv_info.serv_humannode);
1124 hprintf("Content-Type: text/html\r\n");
1126 wprintf(_("Authorization Required"));
1127 wprintf("</h1>\r\n");
1128 wprintf(_("The resource you requested requires a valid username and password. "
1129 "You could not be logged in: %s\n"), message);
1135 * This function is called by the MIME parser to handle data uploaded by
1136 * the browser. Form data, uploaded files, and the data from HTTP PUT
1137 * operations (such as those found in GroupDAV) all arrive this way.
1139 * name Name of the item being uploaded
1140 * filename Filename of the item being uploaded
1141 * partnum MIME part identifier (not needed)
1142 * disp MIME content disposition (not needed)
1143 * content The actual data
1144 * cbtype MIME content-type
1145 * cbcharset Character set
1146 * length Content length
1147 * encoding MIME encoding type (not needed)
1148 * userdata Not used here
1150 void upload_handler(char *name, char *filename, char *partnum, char *disp,
1151 void *content, char *cbtype, char *cbcharset,
1152 size_t length, char *encoding, void *userdata)
1155 #ifdef DEBUG_URLSTRINGS
1156 lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n", name, cbtype, length);
1158 if (WC->urlstrings == NULL)
1159 WC->urlstrings = NewHash(1, NULL);
1162 if ( (length > 0) && (IsEmptyStr(cbtype)) ) {
1163 u = (urlcontent *) malloc(sizeof(urlcontent));
1165 safestrncpy(u->url_key, name, sizeof(u->url_key));
1166 u->url_data = malloc(length + 1);
1167 u->url_data_size = length;
1168 memcpy(u->url_data, content, length);
1169 u->url_data[length] = 0;
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", u->url_key, u->url_data_size, u->url_data);
1176 /** Uploaded files */
1177 if ( (length > 0) && (!IsEmptyStr(cbtype)) ) {
1178 WC->upload = malloc(length);
1179 if (WC->upload != NULL) {
1180 WC->upload_length = length;
1181 safestrncpy(WC->upload_filename, filename,
1182 sizeof(WC->upload_filename));
1183 safestrncpy(WC->upload_content_type, cbtype,
1184 sizeof(WC->upload_content_type));
1185 memcpy(WC->upload, content, length);
1188 lprintf(3, "malloc() failed: %s\n", strerror(errno));
1195 * Convenience functions to wrap around asynchronous ajax responses
1197 void begin_ajax_response(void) {
1198 output_headers(0, 0, 0, 0, 0, 0);
1200 hprintf("Content-type: text/html; charset=UTF-8\r\n"
1202 "Connection: close\r\n"
1203 "Pragma: no-cache\r\n"
1204 "Cache-Control: no-cache\r\n"
1212 * print ajax response footer
1214 void end_ajax_response(void) {
1215 ///hprintf("\r\n");///// todo: is this right?
1220 * Wraps a Citadel server command in an AJAX transaction.
1222 void ajax_servcmd(void)
1225 char gcontent[1024];
1229 begin_ajax_response();
1231 serv_printf("%s", bstr("g_cmd"));
1232 serv_getln(buf, sizeof buf);
1233 wprintf("%s\n", buf);
1235 if (buf[0] == '8') {
1236 serv_printf("\n\n000");
1238 if ((buf[0] == '1') || (buf[0] == '8')) {
1239 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
1240 wprintf("%s\n", gcontent);
1244 if (buf[0] == '4') {
1245 text_to_server(bstr("g_input"));
1248 if (buf[0] == '6') {
1249 len = atol(&buf[4]);
1251 serv_read(junk, len);
1254 if (buf[0] == '7') {
1255 len = atol(&buf[4]);
1257 memset(junk, 0, len);
1258 serv_write(junk, len);
1262 end_ajax_response();
1265 * This is kind of an ugly hack, but this is the only place it can go.
1266 * If the command was GEXP, then the instant messenger window must be
1267 * running, so reset the "last_pager_check" watchdog timer so
1268 * that page_popup() doesn't try to open it a second time.
1270 if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
1271 WC->last_pager_check = time(NULL);
1277 * Helper function for the asynchronous check to see if we need
1278 * to open the instant messenger window.
1280 void seconds_since_last_gexp(void)
1284 begin_ajax_response();
1285 if ( (time(NULL) - WC->last_pager_check) < 30) {
1290 serv_getln(buf, sizeof buf);
1291 if (buf[3] == '*') {
1298 end_ajax_response();
1302 * \brief Detects a 'mobile' user agent
1304 int is_mobile_ua(char *user_agent) {
1305 if (strstr(user_agent,"iPhone OS") != NULL) {
1307 } else if (strstr(user_agent,"Windows CE") != NULL) {
1309 } else if (strstr(user_agent,"SymbianOS") != NULL) {
1317 * Entry point for WebCit transaction
1319 void session_loop(struct httprequest *req)
1327 char request_method[128];
1328 char pathname[1024];
1329 int a, b, nBackDots, nEmpty;
1330 int ContentLength = 0;
1331 char ContentType[512];
1332 char *content = NULL;
1333 char *content_end = NULL;
1334 struct httprequest *hptr;
1335 char browser_host[256];
1336 char user_agent[256];
1342 * We stuff these with the values coming from the client cookies,
1343 * so we can use them to reconnect a timed out session if we have to.
1345 char c_username[SIZ];
1346 char c_password[SIZ];
1347 char c_roomname[SIZ];
1348 char c_httpauth_string[SIZ];
1349 char c_httpauth_user[SIZ];
1350 char c_httpauth_pass[SIZ];
1352 struct wcsession *WCC;
1354 safestrncpy(c_username, "", sizeof c_username);
1355 safestrncpy(c_password, "", sizeof c_password);
1356 safestrncpy(c_roomname, "", sizeof c_roomname);
1357 safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
1358 safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
1359 safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
1360 strcpy(browser_host, "");
1363 if (WCC->WBuf == NULL)
1364 WCC->WBuf = NewStrBuf();
1365 FlushStrBuf(WCC->WBuf);
1367 if (WCC->HBuf == NULL)
1368 WCC->HBuf = NewStrBuf();
1369 FlushStrBuf(WCC->HBuf);
1371 WCC->upload_length = 0;
1376 if (hptr == NULL) return;
1378 safestrncpy(cmd, hptr->line, sizeof cmd);
1380 extract_token(request_method, cmd, 0, ' ', sizeof request_method);
1381 extract_token(pathname, cmd, 1, ' ', sizeof pathname);
1383 /** Figure out the action */
1385 sizes[0] = sizeof action;
1388 index[a] = arg[a-1];
1389 sizes[a] = sizeof arg[a-1];
1391 //// index[9] = &foo; todo
1394 for ( a = 0; a < 9; ++a)
1396 extract_token(index[a], pathname, a + 1, '/', sizes[a]);
1397 if (strstr(index[a], "?")) *strstr(index[a], "?") = 0;
1398 if (strstr(index[a], "&")) *strstr(index[a], "&") = 0;
1399 if (strstr(index[a], " ")) *strstr(index[a], " ") = 0;
1400 if ((index[a][0] == '.') && (index[a][1] == '.'))
1402 if (index[a][0] == '\0')
1406 while (hptr != NULL) {
1407 safestrncpy(buf, hptr->line, sizeof buf);
1408 /* lprintf(9, "HTTP HEADER: %s\n", buf); */
1411 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
1412 safestrncpy(cookie, &buf[15], sizeof cookie);
1413 cookie_to_stuff(cookie, NULL,
1414 c_username, sizeof c_username,
1415 c_password, sizeof c_password,
1416 c_roomname, sizeof c_roomname);
1418 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
1419 CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
1420 extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1421 extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1423 else if (!strncasecmp(buf, "Content-length: ", 16)) {
1424 ContentLength = atoi(&buf[16]);
1426 else if (!strncasecmp(buf, "Content-type: ", 14)) {
1427 safestrncpy(ContentType, &buf[14], sizeof ContentType);
1429 else if (!strncasecmp(buf, "User-agent: ", 12)) {
1430 safestrncpy(user_agent, &buf[12], sizeof user_agent);
1431 if (is_mobile_ua(&buf[12])) {
1435 else if (!strncasecmp(buf, "X-Forwarded-Host: ", 18)) {
1437 safestrncpy(WCC->http_host, &buf[18], sizeof WCC->http_host);
1440 else if (!strncasecmp(buf, "Host: ", 6)) {
1441 if (IsEmptyStr(WCC->http_host)) {
1442 safestrncpy(WCC->http_host, &buf[6], sizeof WCC->http_host);
1445 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
1446 safestrncpy(browser_host, &buf[17], sizeof browser_host);
1447 while (num_tokens(browser_host, ',') > 1) {
1448 remove_token(browser_host, 0, ',');
1450 striplt(browser_host);
1454 if (ContentLength > 0) {
1457 BuffSize = ContentLength + SIZ;
1458 content = malloc(BuffSize);
1459 memset(content, 0, BuffSize);
1460 snprintf(content, BuffSize, "Content-type: %s\n"
1461 "Content-length: %d\n\n",
1462 ContentType, ContentLength);
1463 body_start = strlen(content);
1465 /** Read the entire input data at once. */
1466 client_read(WCC->http_sock, &content[body_start], ContentLength);
1468 if (!strncasecmp(ContentType, "application/x-www-form-urlencoded", 33)) {
1469 addurls(&content[body_start], ContentLength);
1470 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1471 content_end = content + ContentLength + body_start;
1472 mime_parser(content, content_end, *upload_handler, NULL, NULL, NULL, 0);
1478 /* make a note of where we are in case the user wants to save it */
1479 safestrncpy(WCC->this_page, cmd, sizeof(WCC->this_page));
1480 remove_token(WCC->this_page, 2, ' ');
1481 remove_token(WCC->this_page, 0, ' ');
1483 /* If there are variables in the URL, we must grab them now */
1485 for (a = 0; a < len; ++a) {
1486 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1487 for (b = a; b < len; ++b) {
1488 if (isspace(cmd[b])){
1493 addurls(&cmd[a + 1], len - a);
1499 /* If it's a "force 404" situation then display the error and bail. */
1500 if (!strcmp(action, "404")) {
1501 hprintf("HTTP/1.1 404 Not found\r\n");
1502 hprintf("Content-Type: text/plain\r\n");
1503 wprintf("Not found\r\n");
1505 goto SKIP_ALL_THIS_CRAP;
1508 /* Static content can be sent without connecting to Citadel. */
1510 for (a=0; a<ndirs; ++a) {
1511 if (!strcasecmp(action, (char*)static_content_dirs[a])) { /* map web to disk location */
1519 snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1520 static_dirs[n_static],
1521 index[1], index[2], index[3], index[4], index[5], index[6], index[7]);
1522 for (a=0; a<8; ++a) {
1523 if (buf[strlen(buf)-1] == '/') {
1524 buf[strlen(buf)-1] = 0;
1527 for (a = 0; a < strlen(buf); ++a) {
1528 if (isspace(buf[a])) {
1536 lprintf(9, "Suspicious request. Ignoring.");
1537 hprintf("HTTP/1.1 404 Security check failed\r\n");
1538 hprintf("Content-Type: text/plain\r\n");
1539 wprintf("You have sent a malformed or invalid request.\r\n");
1542 goto SKIP_ALL_THIS_CRAP; /* Don't try to connect */
1545 /* If the client sent a nonce that is incorrect, kill the request. */
1546 if (strlen(bstr("nonce")) > 0) {
1547 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
1548 bstr("nonce"), WCC->nonce);
1549 if (ibstr("nonce") != WCC->nonce) {
1550 lprintf(9, "Ignoring request with mismatched nonce.\n");
1551 hprintf("HTTP/1.1 404 Security check failed\r\n");
1552 hprintf("Content-Type: text/plain\r\n");
1553 wprintf("Security check failed.\r\n");
1555 goto SKIP_ALL_THIS_CRAP;
1560 * If we're not connected to a Citadel server, try to hook up the
1563 if (!WCC->connected) {
1564 if (!strcasecmp(ctdlhost, "uds")) {
1565 /* unix domain socket */
1566 snprintf(buf, SIZ, "%s/citadel.socket", ctdlport);
1567 WCC->serv_sock = uds_connectsock(buf);
1571 WCC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1574 if (WCC->serv_sock < 0) {
1576 goto SKIP_ALL_THIS_CRAP;
1580 serv_getln(buf, sizeof buf); /** get the server welcome message */
1583 * From what host is our user connecting? Go with
1584 * the host at the other end of the HTTP socket,
1585 * unless we are following X-Forwarded-For: headers
1586 * and such a header has already turned up something.
1588 if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1589 locate_host(browser_host, WCC->http_sock);
1592 get_serv_info(browser_host, user_agent);
1593 if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1594 wprintf(_("You are connected to a Citadel "
1595 "server running Citadel %d.%02d. \n"
1596 "In order to run this version of WebCit "
1597 "you must also have Citadel %d.%02d or"
1599 serv_info.serv_rev_level / 100,
1600 serv_info.serv_rev_level % 100,
1601 MINIMUM_CIT_VERSION / 100,
1602 MINIMUM_CIT_VERSION % 100
1604 end_webcit_session();
1605 goto SKIP_ALL_THIS_CRAP;
1611 * Functions which can be performed without logging in
1613 if (!strcasecmp(action, "listsub")) {
1615 goto SKIP_ALL_THIS_CRAP;
1617 if (!strcasecmp(action, "freebusy")) {
1619 goto SKIP_ALL_THIS_CRAP;
1623 * If we're not logged in, but we have HTTP Authentication data,
1624 * try logging in to Citadel using that.
1626 if ((!WCC->logged_in)
1627 && (strlen(c_httpauth_user) > 0)
1628 && (strlen(c_httpauth_pass) > 0)) {
1629 serv_printf("USER %s", c_httpauth_user);
1630 serv_getln(buf, sizeof buf);
1631 if (buf[0] == '3') {
1632 serv_printf("PASS %s", c_httpauth_pass);
1633 serv_getln(buf, sizeof buf);
1634 if (buf[0] == '2') {
1635 become_logged_in(c_httpauth_user,
1636 c_httpauth_pass, buf);
1637 safestrncpy(WCC->httpauth_user, c_httpauth_user, sizeof WCC->httpauth_user);
1638 safestrncpy(WCC->httpauth_pass, c_httpauth_pass, sizeof WCC->httpauth_pass);
1640 /* Should only display when password is wrong */
1641 authorization_required(&buf[4]);
1642 goto SKIP_ALL_THIS_CRAP;
1647 /* This needs to run early */
1649 if (!strcasecmp(action, "rss")) {
1650 display_rss(bstr("room"), request_method);
1651 goto SKIP_ALL_THIS_CRAP;
1656 * The GroupDAV stuff relies on HTTP authentication instead of
1657 * our session's authentication.
1659 if (!strncasecmp(action, "groupdav", 8)) {
1660 groupdav_main(req, ContentType, /* do GroupDAV methods */
1661 ContentLength, content+body_start);
1662 if (!WCC->logged_in) {
1663 WCC->killthis = 1; /* If not logged in, don't */
1664 } /* keep the session active */
1665 goto SKIP_ALL_THIS_CRAP;
1670 * Automatically send requests with any method other than GET or
1671 * POST to the GroupDAV code as well.
1673 if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1674 groupdav_main(req, ContentType, /** do GroupDAV methods */
1675 ContentLength, content+body_start);
1676 if (!WCC->logged_in) {
1677 WCC->killthis = 1; /** If not logged in, don't */
1678 } /** keep the session active */
1679 goto SKIP_ALL_THIS_CRAP;
1683 * If we're not logged in, but we have username and password cookies
1684 * supplied by the browser, try using them to log in.
1686 if ((!WCC->logged_in)
1687 && (!IsEmptyStr(c_username))
1688 && (!IsEmptyStr(c_password))) {
1689 serv_printf("USER %s", c_username);
1690 serv_getln(buf, sizeof buf);
1691 if (buf[0] == '3') {
1692 serv_printf("PASS %s", c_password);
1693 serv_getln(buf, sizeof buf);
1694 if (buf[0] == '2') {
1695 become_logged_in(c_username, c_password, buf);
1700 * If we don't have a current room, but a cookie specifying the
1701 * current room is supplied, make an effort to go there.
1703 if ((IsEmptyStr(WCC->wc_roomname)) && (!IsEmptyStr(c_roomname))) {
1704 serv_printf("GOTO %s", c_roomname);
1705 serv_getln(buf, sizeof buf);
1706 if (buf[0] == '2') {
1707 safestrncpy(WCC->wc_roomname, c_roomname, sizeof WCC->wc_roomname);
1711 if (!strcasecmp(action, "image")) {
1713 } else if (!strcasecmp(action, "display_mime_icon")) {
1714 display_mime_icon();
1718 WebcitHandler *Handler;
1720 GetHash(HandlerHash, action, strlen(action) /* TODO*/, &vHandler),
1721 Handler = (WebcitHandler*) vHandler;
1722 if (Handler != NULL) {
1723 if (!WCC->logged_in && ((Handler->Flags & ANONYMOUS) == 0)) {
1724 display_login(NULL);
1727 if((Handler->Flags & NEED_URL)) {
1728 if (WCC->UrlFragment1 == NULL)
1729 WCC->UrlFragment1 = NewStrBuf();
1730 if (WCC->UrlFragment2 == NULL)
1731 WCC->UrlFragment2 = NewStrBuf();
1732 StrBufPrintf(WCC->UrlFragment1, "%s", index[1]);
1733 StrBufPrintf(WCC->UrlFragment2, "%s", index[2]);
1735 if ((Handler->Flags & AJAX) != 0)
1736 begin_ajax_response();
1738 if ((Handler->Flags & AJAX) != 0)
1739 end_ajax_response();
1742 /* When all else fais, display the main menu. */
1744 if (!WCC->logged_in)
1745 display_login(NULL);
1747 display_main_menu();
1752 if (content != NULL) {
1757 if (WCC->upload_length > 0) {
1759 WCC->upload_length = 0;
1765 * Replacement for sleep() that uses select() in order to avoid SIGALRM
1767 void sleeeeeeeeeep(int seconds)
1771 tv.tv_sec = seconds;
1773 select(0, NULL, NULL, NULL, &tv);
1776 void diagnostics(void)
1778 output_headers(1, 1, 1, 0, 0, 0);
1779 wprintf("Session: %d<hr />\n", WC->wc_session);
1780 wprintf("Command: <br /><PRE>\n");
1781 escputs(WC->UrlFragment1);
1782 wprintf("<br />\n");
1783 escputs(WC->UrlFragment2);
1784 wprintf("</PRE><hr />\n");
1785 wprintf("Variables: <br /><PRE>\n");
1787 wprintf("</PRE><hr />\n");
1791 void view_mimepart(void) {
1792 mimepart(ChrPtr(WC->UrlFragment1),
1793 ChrPtr(WC->UrlFragment2),
1797 void download_mimepart(void) {
1798 mimepart(ChrPtr(WC->UrlFragment1),
1799 ChrPtr(WC->UrlFragment2),
1807 WebcitAddUrlHandler(HKEY("blank"), blank_page, ANONYMOUS);
1808 WebcitAddUrlHandler(HKEY("do_template"), url_do_template, ANONYMOUS);
1809 WebcitAddUrlHandler(HKEY("sslg"), seconds_since_last_gexp, AJAX);
1810 WebcitAddUrlHandler(HKEY("ajax_servcmd"), ajax_servcmd, 0);
1811 WebcitAddUrlHandler(HKEY("change_start_page"), change_start_page, 0);
1812 WebcitAddUrlHandler(HKEY("toggle_self_service"), toggle_self_service, 0);
1813 WebcitAddUrlHandler(HKEY("vcardphoto"), display_vcard_photo_img, NEED_URL);
1814 WebcitAddUrlHandler(HKEY("mimepart"), view_mimepart, NEED_URL);
1815 WebcitAddUrlHandler(HKEY("mimepart_download"), download_mimepart, NEED_URL);
1816 WebcitAddUrlHandler(HKEY("diagnostics"), diagnostics, NEED_URL);