--- /dev/null
+// This is the main transaction loop of the web service. It maintains a
+// persistent session to the Citadel server, handling HTTP WebCit requests as
+// they arrive and presenting a user interface.
+//
+// Copyright (c) 1996-2021 by the citadel.org team
+//
+// This program is open source software. You can redistribute it and/or
+// modify it under the terms of the GNU General Public License, version 3.
+
+
+#define SHOW_ME_VAPPEND_PRINTF
+#include <stdio.h>
+#include <stdarg.h>
+#include "webcit.h"
+#include "dav.h"
+#include "webserver.h"
+
+StrBuf *csslocal = NULL;
+HashList *HandlerHash = NULL;
+
+void stuff_to_cookie(int unset_cookie);
+extern int GetConnected(void);
+extern int verbose;
+
+void PutRequestLocalMem(void *Data, DeleteHashDataFunc DeleteIt)
+{
+ int n;
+
+ n = GetCount(WC->Hdr->HTTPHeaders);
+ Put(WC->Hdr->HTTPHeaders, IKEY(n), Data, DeleteIt);
+}
+
+void DeleteWebcitHandler(void *vHandler)
+{
+ WebcitHandler *Handler = (WebcitHandler*) vHandler;
+ FreeStrBuf(&Handler->Name);
+ FreeStrBuf(&Handler->DisplayName);
+ free (Handler);
+}
+
+void WebcitAddUrlHandler(const char * UrlString, long UrlSLen,
+ const char *DisplayName, long dslen,
+ WebcitHandlerFunc F,
+ long Flags)
+{
+ WebcitHandler *NewHandler;
+ NewHandler = (WebcitHandler*) malloc(sizeof(WebcitHandler));
+ NewHandler->F = F;
+ NewHandler->Flags = Flags;
+ NewHandler->Name = NewStrBufPlain(UrlString, UrlSLen);
+ StrBufShrinkToFit(NewHandler->Name, 1);
+ NewHandler->DisplayName = NewStrBufPlain(DisplayName, dslen);
+ StrBufShrinkToFit(NewHandler->DisplayName, 1);
+ Put(HandlerHash, UrlString, UrlSLen, NewHandler, DeleteWebcitHandler);
+}
+
+void tmplput_HANDLER_DISPLAYNAME(StrBuf *Target, WCTemplputParams *TP)
+{
+ if (WC->Hdr->HR.Handler != NULL)
+ StrBufAppendTemplate(Target, TP, WC->Hdr->HR.Handler->DisplayName, 0);
+}
+
+
+/*
+ * web-printing funcion. uses our vsnprintf wrapper
+ */
+#ifdef UBER_VERBOSE_DEBUGGING
+void wcc_printf(const char *FILE, const char *FUNCTION, long LINE, const char *format,...)
+#else
+void wc_printf(const char *format,...)
+#endif
+{
+ va_list arg_ptr;
+
+ if (WC->WBuf == NULL)
+ WC->WBuf = NewStrBuf();
+#ifdef UBER_VERBOSE_DEBUGGING
+ StrBufAppendPrintf(WC->WBuf, "\n%s:%s:%d[", FILE, FUNCTION, LINE);
+#endif
+
+ va_start(arg_ptr, format);
+ StrBufVAppendPrintf(WC->WBuf, format, arg_ptr);
+ va_end(arg_ptr);
+#ifdef UBER_VERBOSE_DEBUGGING
+ StrBufAppendPrintf(WC->WBuf, "]\n");
+#endif
+}
+
+/*
+ * http-header-printing funcion. uses our vsnprintf wrapper
+ */
+void hprintf(const char *format,...)
+{
+ va_list arg_ptr;
+
+ va_start(arg_ptr, format);
+ StrBufVAppendPrintf(WC->HBuf, format, arg_ptr);
+ va_end(arg_ptr);
+}
+
+
+
+/*
+ * wrap up an HTTP session, closes tags, etc.
+ *
+ * print_standard_html_footer should be set to:
+ * 0 - to transmit only,
+ * nonzero - to append the closing tags
+ */
+void wDumpContent(int print_standard_html_footer)
+{
+ if (print_standard_html_footer) {
+ wc_printf("</div> <!-- end of 'content' div -->\n");
+ do_template("trailing");
+ }
+
+ /* If we've been saving it all up for one big output burst,
+ * go ahead and do that now.
+ */
+ end_burst();
+}
+
+
+
+
+/*
+ * Output HTTP headers and leading HTML for a page
+ */
+void output_headers( int do_httpheaders, /* 1 = output HTTP headers */
+ int do_htmlhead, /* 1 = output HTML <head> section and <body> opener */
+ int do_room_banner, /* 1 = include the room banner and <div id="content"></div> */
+ int unset_cookies, /* 1 = session is terminating, so unset the cookies */
+ int suppress_check, /* 1 = suppress check for instant messages */
+ int cache /* 1 = allow browser to cache this page */
+) {
+ char httpnow[128];
+
+ if (WC->isFailure)
+ hprintf("HTTP/2.2 500 Internal Server Error");
+ else if (WC->Hdr->HaveRange > 1)
+ hprintf("HTTP/1.1 206 Partial Content\r\n");
+ else
+ hprintf("HTTP/1.1 200 OK\r\n");
+
+ http_datestring(httpnow, sizeof httpnow, time(NULL));
+
+ if (do_httpheaders) {
+ if (WC->serv_info != NULL)
+ hprintf("Content-type: text/html; charset=utf-8\r\n"
+ "Server: %s / %s\n"
+ "Connection: close\r\n",
+ PACKAGE_STRING,
+ ChrPtr(WC->serv_info->serv_software));
+ else
+ hprintf("Content-type: text/html; charset=utf-8\r\n"
+ "Server: %s / [n/a]\n"
+ "Connection: close\r\n",
+ PACKAGE_STRING);
+ }
+
+ if (cache > 0) {
+ char httpTomorow[128];
+
+ http_datestring(httpTomorow, sizeof httpTomorow,
+ time(NULL) + 60 * 60 * 24 * 2);
+
+ hprintf("Pragma: public\r\n"
+ "Cache-Control: max-age=3600, must-revalidate\r\n"
+ "Last-modified: %s\r\n"
+ "Expires: %s\r\n",
+ httpnow,
+ httpTomorow
+ );
+ }
+ else {
+ hprintf("Pragma: no-cache\r\n"
+ "Cache-Control: no-store\r\n"
+ "Expires: -1\r\n"
+ );
+ }
+
+ if (cache < 2) stuff_to_cookie(unset_cookies);
+
+ if (do_htmlhead) {
+ begin_burst();
+ do_template("head");
+ if ( (WC->logged_in) && (!unset_cookies) ) {
+ DoTemplate(HKEY("paging"), NULL, &NoCtx);
+ }
+ if (do_room_banner) {
+ tmplput_roombanner(NULL, NULL);
+ }
+ }
+
+ if (do_room_banner) {
+ wc_printf("<div id=\"content\">\n");
+ }
+}
+
+void output_custom_content_header(const char *ctype) {
+ hprintf("HTTP/1.1 200 OK\r\n");
+ hprintf("Content-type: %s; charset=utf-8\r\n",ctype);
+ hprintf("Server: %s / %s\r\n", PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software));
+ hprintf("Connection: close\r\n");
+}
+
+
+/*
+ * Generic function to do an HTTP redirect. Easy and fun.
+ */
+void http_redirect(const char *whichpage) {
+ hprintf("HTTP/1.1 302 Moved Temporarily\n");
+ hprintf("Location: %s\r\n", whichpage);
+ hprintf("URI: %s\r\n", whichpage);
+ hprintf("Content-type: text/html; charset=utf-8\r\n");
+ stuff_to_cookie(0);
+ begin_burst();
+ wc_printf("<html><body>");
+ wc_printf("Go <a href=\"%s\">here</A>.", whichpage);
+ wc_printf("</body></html>\n");
+ end_burst();
+}
+
+
+
+/*
+ * Output a piece of content to the web browser using conformant HTTP and MIME semantics.
+ *
+ * If this function is called, it is expected that begin_burst() has already been called
+ * and some sort of content has been fed into the buffer. This function will transmit a
+ * bunch of headers to the client. end_burst() will add some headers of its own, and then
+ * transmit the buffered content to the client.
+ */
+void http_transmit_thing(const char *content_type, int is_static)
+{
+ if (verbose)
+ syslog(LOG_DEBUG, "http_transmit_thing(%s)%s", content_type, ((is_static > 0) ? " (static)" : ""));
+ output_headers(0, 0, 0, 0, 0, is_static);
+
+ hprintf("Content-type: %s\r\n"
+ "Server: %s\r\n"
+ "Connection: close\r\n",
+ content_type,
+ PACKAGE_STRING);
+
+ end_burst();
+}
+
+void http_transmit_headers(const char *content_type, int is_static, long is_chunked, int is_gzip)
+{
+ if (verbose)
+ syslog(LOG_DEBUG, "http_transmit_thing(%s)%s", content_type, ((is_static > 0) ? " (static)" : ""));
+ output_headers(0, 0, 0, 0, 0, is_static);
+
+ if (is_gzip)
+ hprintf("Content-encoding: gzip\r\n");
+
+ if (WC->Hdr->HaveRange)
+ hprintf("Accept-Ranges: bytes\r\n"
+ "Content-Range: bytes %ld-%ld/%ld\r\n",
+ WC->Hdr->RangeStart,
+ WC->Hdr->RangeTil,
+ WC->Hdr->TotalBytes);
+
+ hprintf("Content-type: %s\r\n"
+ "Server: "PACKAGE_STRING"\r\n"
+ "%s"
+ "Connection: close\r\n\r\n",
+ content_type,
+ (is_chunked)?"Transfer-Encoding: chunked\r\n":"");
+}
+
+
+/*
+ * Convenience functions to display a page containing only a string
+ *
+ * titlebarcolor color of the titlebar of the frame
+ * titlebarmsg text to display in the title bar
+ * messagetext body of the box
+ */
+void convenience_page(const char *titlebarcolor, const char *titlebarmsg, const char *messagetext)
+{
+ hprintf("HTTP/1.1 200 OK\n");
+ output_headers(1, 1, 1, 0, 0, 0);
+ wc_printf("<div id=\"room_banner_override\">\n");
+ wc_printf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
+ wc_printf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
+ wc_printf("</td></tr></table>\n");
+ wc_printf("</div>\n<div id=\"content\">\n");
+ escputs(messagetext);
+ wc_printf("<hr />\n");
+ wDumpContent(1);
+}
+
+
+/*
+ * Display a blank page.
+ */
+void blank_page(void) {
+ output_headers(1, 1, 0, 0, 0, 0);
+ wDumpContent(2);
+}
+
+
+/*
+ * A template has been requested
+ */
+void url_do_template(void) {
+ const StrBuf *MimeType;
+ const StrBuf *Tmpl = sbstr("template");
+ begin_burst();
+ MimeType = DoTemplate(SKEY(Tmpl), NULL, &NoCtx);
+ http_transmit_thing(ChrPtr(MimeType), 0);
+}
+
+
+
+/*
+ * convenience function to indicate success
+ */
+void display_success(const char *successmessage)
+{
+ convenience_page("007700", "OK", successmessage);
+}
+
+
+/*
+ * Authorization required page (sends a 401, causing the browser to request login credentials)
+ */
+void authorization_required(void)
+{
+ const char *message = "";
+
+ hprintf("HTTP/1.1 401 Authorization Required\r\n");
+ hprintf(
+ "Server: %s / %s\r\n"
+ "Connection: close\r\n",
+ PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software)
+ );
+ hprintf("WWW-Authenticate: Basic realm=\"%s\"\r\n", ChrPtr(WC->serv_info->serv_humannode));
+
+ /* if this is a false cookie authentication, remove it to avoid endless loops. */
+ if (StrLength(WC->Hdr->HR.RawCookie) > 0)
+ stuff_to_cookie(1);
+
+ hprintf("Content-Type: text/html\r\n");
+ begin_burst();
+ wc_printf("<h1>");
+ wc_printf(_("Authorization Required"));
+ wc_printf("</h1>\r\n");
+
+ if (WC->ImportantMsg != NULL) {
+ message = ChrPtr(WC->ImportantMsg);
+ }
+
+ wc_printf(
+ _("The resource you requested requires a valid username and password. "
+ "You could not be logged in: %s\n"),
+ message
+ );
+ wDumpContent(0);
+}
+
+
+/*
+ * Convenience functions to wrap around asynchronous ajax responses
+ */
+void begin_ajax_response(void) {
+
+ FlushStrBuf(WC->HBuf);
+ output_headers(0, 0, 0, 0, 0, 0);
+
+ hprintf("Content-type: text/html; charset=UTF-8\r\n"
+ "Server: %s\r\n"
+ "Connection: close\r\n"
+ ,
+ PACKAGE_STRING);
+ begin_burst();
+}
+
+
+/*
+ * print ajax response footer
+ */
+void end_ajax_response(void) {
+ wDumpContent(0);
+}
+
+
+/*
+ * Wraps a Citadel server command in an AJAX transaction.
+ */
+void ajax_servcmd(void) {
+ int Done = 0;
+ StrBuf *Buf;
+ char *junk;
+ size_t len;
+
+ if (verbose) {
+ syslog(LOG_DEBUG, "ajax_servcmd() g_cmd=\"%s\"", bstr("g_cmd") );
+ }
+ begin_ajax_response();
+ Buf = NewStrBuf();
+ serv_puts(bstr("g_cmd"));
+ StrBuf_ServGetln(Buf);
+ StrBufAppendBuf(WC->WBuf, Buf, 0);
+ StrBufAppendBufPlain(WC->WBuf, HKEY("\n"), 0);
+
+ switch (GetServerStatus(Buf, NULL)) {
+ case 8:
+ serv_puts("\n\n000");
+ if ( (StrLength(Buf)==3) &&
+ !strcmp(ChrPtr(Buf), "000")) {
+ StrBufAppendBufPlain(WC->WBuf, HKEY("\000"), 0);
+ break;
+ }
+ case 1:
+ while (!Done) {
+ if (StrBuf_ServGetln(Buf) < 0)
+ break;
+ if ( (StrLength(Buf)==3) &&
+ !strcmp(ChrPtr(Buf), "000")) {
+ Done = 1;
+ }
+ StrBufAppendBuf(WC->WBuf, Buf, 0);
+ StrBufAppendBufPlain(WC->WBuf, HKEY("\n"), 0);
+ }
+ break;
+ case 4:
+ text_to_server(bstr("g_input"));
+ serv_puts("000");
+ break;
+ case 6:
+ len = atol(&ChrPtr(Buf)[4]);
+ StrBuf_ServGetBLOBBuffered(Buf, len);
+ break;
+ case 7:
+ len = atol(&ChrPtr(Buf)[4]);
+ junk = malloc(len);
+ memset(junk, 0, len);
+ serv_write(junk, len);
+ free(junk);
+ }
+
+ end_ajax_response();
+
+ /*
+ * This is kind of an ugly hack, but this is the only place it can go.
+ * If the command was GEXP, then the instant messenger window must be
+ * running, so reset the "last_pager_check" watchdog timer so
+ * that page_popup() doesn't try to open it a second time. TODO: page_popup isn't with us anymore.
+ */
+ if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
+ WC->last_pager_check = time(NULL);
+ }
+ FreeStrBuf(&Buf);
+}
+
+
+/*
+ * Helper function for the asynchronous check to see if we need
+ * to open the instant messenger window.
+ */
+void seconds_since_last_gexp(void)
+{
+ char buf[256];
+
+ if ( (time(NULL) - WC->last_pager_check) < 30) {
+ wc_printf("NO\n");
+ }
+ else {
+ memset(buf, 0, 5);
+ serv_puts("NOOP");
+ serv_getln(buf, sizeof buf);
+ if (buf[3] == '*') {
+ wc_printf("YES");
+ }
+ else {
+ wc_printf("NO");
+ }
+ }
+}
+
+
+/*
+ * Save a URL destination so we can go to it later
+ */
+void push_destination(void) {
+
+ if (!WC) {
+ wc_printf("no session");
+ return;
+ }
+
+ FreeStrBuf(&WC->PushedDestination);
+ WC->PushedDestination = NewStrBufDup(sbstr("url"));
+ if (verbose)
+ syslog(LOG_DEBUG, "Push: %s", ChrPtr(WC->PushedDestination));
+ wc_printf("OK");
+}
+
+
+/*
+ * Go to the URL saved by push_destination()
+ */
+void pop_destination(void) {
+ /*
+ * If we are in the middle of a new user signup, the server may request that
+ * we first pass through a registration screen.
+ */
+ if ((WC) && (WC->need_regi)) {
+ if ((WC->PushedDestination != NULL) && (StrLength(WC->PushedDestination) > 0)) {
+ /* Registering will take us to the My Citadel Config room, so save our place */
+ StrBufAppendBufPlain(WC->PushedDestination, HKEY("?go="), 0);
+ StrBufUrlescAppend(WC->PushedDestination, WC->CurRoom.name, NULL);
+ }
+ WC->need_regi = 0;
+ display_reg(1);
+ return;
+ }
+
+ /*
+ * Do something reasonable if we somehow ended up requesting a pop without
+ * having first done a push.
+ */
+ if ( (!WC) || (WC->PushedDestination == NULL) || (StrLength(WC->PushedDestination) == 0) ) {
+ do_welcome();
+ return;
+ }
+
+ /*
+ * All righty then! We have a destination saved, so go there now.
+ */
+ if (verbose) {
+ syslog(LOG_DEBUG, "Pop: %s", ChrPtr(WC->PushedDestination));
+ }
+ http_redirect(ChrPtr(WC->PushedDestination));
+}
+
+
+int ReadPostData(void) {
+ int rc;
+ int urlencoded_post = 0;
+ StrBuf *content = NULL;
+
+ urlencoded_post = (strncasecmp(ChrPtr(WC->Hdr->HR.ContentType), "application/x-www-form-urlencoded", 33) == 0) ;
+
+ content = NewStrBufPlain(NULL, WC->Hdr->HR.ContentLength + 256);
+
+ if (!urlencoded_post) {
+ StrBufPrintf(content,
+ "Content-type: %s\n"
+ "Content-length: %ld\n\n",
+ ChrPtr(WC->Hdr->HR.ContentType),
+ WC->Hdr->HR.ContentLength
+ );
+ }
+
+ /* Read the entire input data at once. */
+ rc = client_read_to(WC->Hdr, content, WC->Hdr->HR.ContentLength, SLEEPING);
+ if (rc < 0) {
+ return rc;
+ }
+
+ if (urlencoded_post) {
+ ParseURLParams(content);
+ }
+ else if (!strncasecmp(ChrPtr(WC->Hdr->HR.ContentType), "multipart", 9)) {
+ char *Buf;
+ char *BufEnd;
+ long len;
+
+ len = StrLength(content);
+ Buf = SmashStrBuf(&content);
+ BufEnd = Buf + len;
+ mime_parser(Buf, BufEnd, *upload_handler, NULL, NULL, NULL, 0);
+ free(Buf);
+ }
+ else if (WC->Hdr->HR.ContentLength > 0) {
+ WC->upload = content;
+ WC->upload_length = StrLength(WC->upload);
+ content = NULL;
+ }
+ FreeStrBuf(&content);
+ return 1;
+}
+
+
+int Conditional_REST_DEPTH(StrBuf *Target, WCTemplputParams *TP)
+{
+ long Depth, IsDepth;
+ long offset = 0;
+
+ if (WC->Hdr->HR.Handler != NULL)
+ offset ++;
+ Depth = GetTemplateTokenNumber(Target, TP, 2, 0);
+ IsDepth = GetCount(WC->Directory) + offset;
+
+// LogTemplateError(Target, "bla", 1, TP, "REST_DEPTH: %ld : %ld\n", Depth, IsDepth);
+ if (Depth < 0) {
+ Depth = -Depth;
+ return IsDepth > Depth;
+ }
+ else
+ return Depth == IsDepth;
+}
+
+
+
+/*
+ * Entry point for WebCit transaction
+ */
+void session_loop(void)
+{
+ int xhttp;
+ StrBuf *Buf;
+
+ /*
+ * We stuff these with the values coming from the client cookies,
+ * so we can use them to reconnect a timed out session if we have to.
+ */
+ WC->upload_length = 0;
+ WC->upload = NULL;
+ WC->Hdr->nWildfireHeaders = 0;
+
+ if (WC->Hdr->HR.ContentLength > 0) {
+ if (ReadPostData() < 0) {
+ return;
+ }
+ }
+
+ Buf = NewStrBuf();
+ WC->trailing_javascript = NewStrBuf();
+
+ /* Convert base64-encoded URL's back to plain text */
+ if (!strncmp(ChrPtr(WC->Hdr->this_page), "/B64", 4)) {
+ StrBufCutLeft(WC->Hdr->this_page, 4);
+ StrBufDecodeBase64(WC->Hdr->this_page);
+ http_redirect(ChrPtr(WC->Hdr->this_page));
+ goto SKIP_ALL_THIS_CRAP;
+ }
+
+ /* If there are variables in the URL, we must grab them now */
+ if (WC->Hdr->PlainArgs != NULL) {
+ ParseURLParams(WC->Hdr->PlainArgs);
+ }
+
+ /* If the client sent a nonce that is incorrect, kill the request. */
+ if (havebstr("nonce")) {
+ if (verbose) {
+ syslog(LOG_DEBUG, "Comparing supplied nonce %s to session nonce %d", bstr("nonce"), WC->nonce);
+ }
+ if (ibstr("nonce") != WC->nonce) {
+ syslog(LOG_INFO, "Ignoring request with mismatched nonce.");
+ hprintf("HTTP/1.1 404 Security check failed\r\n");
+ hprintf("Content-Type: text/plain\r\n");
+ begin_burst();
+ wc_printf("Security check failed.\r\n");
+ end_burst();
+ goto SKIP_ALL_THIS_CRAP;
+ }
+ }
+
+ /*
+ * If we're not connected to a Citadel server, try to hook up the connection now.
+ */
+ if (!WC->connected) {
+ if (GetConnected()) {
+ hprintf("HTTP/1.1 503 Service Unavailable\r\n");
+ hprintf("Content-Type: text/html\r\n");
+ begin_burst();
+ wc_printf("<html><head><title>503 Service Unavailable</title></head><body>\n");
+ wc_printf(_("This program was unable to connect or stay "
+ "connected to the Citadel server. Please report "
+ "this problem to your system administrator.")
+ );
+ wc_printf("<br>");
+ wc_printf("<a href=\"http://www.citadel.org/doku.php/"
+ "faq:generalquestions:webcit_unable_to_connect\">%s</a>",
+ _("Read More...")
+ );
+ wc_printf("</body></html>\n");
+ end_burst();
+ goto SKIP_ALL_THIS_CRAP;
+ }
+ }
+
+ /*
+ * If we're not logged in, but we have authentication data (either from
+ * a cookie or from http-auth), try logging in to Citadel using that.
+ */
+ if ( (!WC->logged_in)
+ && (StrLength(WC->Hdr->c_username) > 0)
+ && (StrLength(WC->Hdr->c_password) > 0)
+ ) {
+ long Status;
+
+ FlushStrBuf(Buf);
+ serv_printf("USER %s", ChrPtr(WC->Hdr->c_username));
+ StrBuf_ServGetln(Buf);
+ if (GetServerStatus(Buf, &Status) == 3) {
+ serv_printf("PASS %s", ChrPtr(WC->Hdr->c_password));
+ StrBuf_ServGetln(Buf);
+ if (GetServerStatus(Buf, NULL) == 2) {
+ become_logged_in(WC->Hdr->c_username, WC->Hdr->c_password, Buf);
+ }
+ else {
+ /* Should only display when password is wrong */
+ WC->ImportantMsg = NewStrBufPlain(ChrPtr(Buf) + 4, StrLength(Buf) - 4);
+ authorization_required();
+ FreeStrBuf(&Buf);
+ goto SKIP_ALL_THIS_CRAP;
+ }
+ }
+ else if (Status == 541) {
+ WC->logged_in = 1;
+ }
+ }
+
+ xhttp = (WC->Hdr->HR.eReqType != eGET) &&
+ (WC->Hdr->HR.eReqType != ePOST) &&
+ (WC->Hdr->HR.eReqType != eHEAD);
+
+ /*
+ * If a 'go' (or 'gotofirst') parameter has been specified, attempt to goto that room
+ * prior to doing anything else.
+ */
+ if (havebstr("go")) {
+ int ret;
+ if (verbose)
+ syslog(LOG_DEBUG, "Explicit room selection: %s", bstr("go"));
+ ret = gotoroom(sbstr("go")); /* do quietly to avoid session output! */
+ if ((ret/100) != 2) {
+ if (verbose)
+ syslog(LOG_DEBUG, "Unable to change to [%s]; Reason: %d", bstr("go"), ret);
+ }
+ }
+ else if (havebstr("gotofirst")) {
+ int ret;
+ if (verbose)
+ syslog(LOG_DEBUG, "Explicit room selection: %s", bstr("gotofirst"));
+ ret = gotoroom(sbstr("gotofirst")); /* do quietly to avoid session output! */
+ if ((ret/100) != 2) {
+ syslog(LOG_INFO, "Unable to change to [%s]; Reason: %d", bstr("gotofirst"), ret);
+ }
+ }
+
+ /*
+ * If we aren't in any room yet, but we have cookie data telling us where we're
+ * supposed to be, and 'go' was not specified, then go there.
+ */
+ else if ( (StrLength(WC->CurRoom.name) == 0) && ( (StrLength(WC->Hdr->c_roomname) > 0) )) {
+ int ret;
+
+ if (verbose)
+ syslog(LOG_DEBUG, "We are in '%s' but cookie indicates '%s', going there...",
+ ChrPtr(WC->CurRoom.name),
+ ChrPtr(WC->Hdr->c_roomname)
+ );
+ ret = gotoroom(WC->Hdr->c_roomname); /* do quietly to avoid session output! */
+ if ((ret/100) != 2) {
+ if (verbose)
+ syslog(LOG_DEBUG, "COOKIEGOTO: Unable to change to [%s]; Reason: %d",
+ ChrPtr(WC->Hdr->c_roomname), ret);
+ }
+ }
+
+ if (WC->Hdr->HR.Handler != NULL) {
+ if ( (!WC->logged_in)
+ && ((WC->Hdr->HR.Handler->Flags & ANONYMOUS) == 0)
+ && (WC->serv_info != NULL)
+ && (WC->serv_info->serv_supports_guest == 0)
+ ) {
+ display_login();
+ }
+ else {
+ if ((WC->Hdr->HR.Handler->Flags & AJAX) != 0) {
+ begin_ajax_response();
+ }
+ WC->Hdr->HR.Handler->F();
+ if ((WC->Hdr->HR.Handler->Flags & AJAX) != 0) {
+ end_ajax_response();
+ }
+ }
+ }
+ /* When all else fails, display the default landing page or a main menu. */
+ else {
+ /*
+ * ordinary browser users get a nice login screen, DAV etc. requsets
+ * are given a 401 so they can handle it appropriate.
+ */
+ if (!WC->logged_in) {
+ if (xhttp) {
+ authorization_required();
+ }
+ else {
+ display_default_landing_page();
+ }
+ }
+ /*
+ * Toplevel dav requests? or just a flat browser request?
+ */
+ else {
+ if (xhttp) {
+ dav_main();
+ }
+ else {
+ display_main_menu();
+ }
+ }
+ }
+
+SKIP_ALL_THIS_CRAP:
+ FreeStrBuf(&Buf);
+ fflush(stdout);
+}
+
+
+
+/*
+ * Display the appropriate landing page for this site.
+ */
+void display_default_landing_page(void) {
+ if (WC && WC->serv_info && WC->serv_info->serv_supports_guest) {
+ /* default action */
+
+ if (havebstr("go")) {
+ if (verbose)
+ syslog(LOG_DEBUG, "Explicit room selection: %s", bstr("go"));
+ smart_goto(sbstr("go"));
+ }
+ else if (default_landing_page) {
+ http_redirect(default_landing_page);
+ }
+ else {
+ StrBuf *teh_lobby = NewStrBufPlain(HKEY("_BASEROOM_"));
+ smart_goto(teh_lobby);
+ FreeStrBuf(&teh_lobby);
+ }
+ }
+ else {
+ display_login();
+ }
+}
+
+
+/*
+ * Replacement for sleep() that uses select() in order to avoid SIGALRM
+ */
+void sleeeeeeeeeep(int seconds)
+{
+ struct timeval tv;
+
+ tv.tv_sec = seconds;
+ tv.tv_usec = 0;
+ select(0, NULL, NULL, NULL, &tv);
+}
+
+int Conditional_IS_HTTPS(StrBuf *Target, WCTemplputParams *TP)
+{
+ return is_https != 0;
+}
+
+void AppendImportantMessage(const char *pch, long len)
+{
+
+ if (StrLength(WC->ImportantMsg) > 0) {
+ StrBufAppendBufPlain(WC->ImportantMsg, HKEY("\n"), 0);
+ }
+
+ StrBufAppendBufPlain(WC->ImportantMsg, pch, len, 0);
+}
+
+int ConditionalImportantMesage(StrBuf *Target, WCTemplputParams *TP)
+{
+ if (WC != NULL) {
+ return (StrLength(WC->ImportantMsg) > 0);
+ }
+ else {
+ return 0;
+ }
+}
+
+void tmplput_importantmessage(StrBuf *Target, WCTemplputParams *TP)
+{
+
+ if (WC != NULL) {
+ if (StrLength(WC->ImportantMsg) > 0) {
+ StrBufAppendTemplate(Target, TP, WC->ImportantMsg, 0);
+ }
+ }
+}
+
+void tmplput_trailing_javascript(StrBuf *Target, WCTemplputParams *TP)
+{
+
+ if (WC != NULL) {
+ StrBufAppendTemplate(Target, TP, WC->trailing_javascript, 0);
+ }
+}
+
+void tmplput_csslocal(StrBuf *Target, WCTemplputParams *TP)
+{
+ StrBufAppendBuf(Target,
+ csslocal, 0);
+}
+
+void tmplput_packagestring(StrBuf *Target, WCTemplputParams *TP) {
+ StrBufAppendBufPlain(Target, HKEY(PACKAGE_STRING), 0);
+}
+
+extern char static_local_dir[PATH_MAX];
+
+
+void
+InitModule_WEBCIT
+(void)
+{
+ char dir[SIZ];
+ WebcitAddUrlHandler(HKEY("blank"), "", 0, blank_page, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
+ WebcitAddUrlHandler(HKEY("landing"), "", 0, display_default_landing_page, ANONYMOUS|COOKIEUNNEEDED);
+ WebcitAddUrlHandler(HKEY("do_template"), "", 0, url_do_template, ANONYMOUS);
+ WebcitAddUrlHandler(HKEY("sslg"), "", 0, seconds_since_last_gexp, AJAX|LOGCHATTY);
+ WebcitAddUrlHandler(HKEY("ajax_servcmd"), "", 0, ajax_servcmd, 0);
+ WebcitAddUrlHandler(HKEY("webcit"), "", 0, blank_page, URLNAMESPACE);
+ WebcitAddUrlHandler(HKEY("push"), "", 0, push_destination, AJAX);
+ WebcitAddUrlHandler(HKEY("pop"), "", 0, pop_destination, 0);
+
+ WebcitAddUrlHandler(HKEY("401"), "", 0, authorization_required, ANONYMOUS|COOKIEUNNEEDED);
+ RegisterConditional("COND:IMPMSG", 0, ConditionalImportantMesage, CTX_NONE);
+ RegisterConditional("COND:REST:DEPTH", 0, Conditional_REST_DEPTH, CTX_NONE);
+ RegisterConditional("COND:IS_HTTPS", 0, Conditional_IS_HTTPS, CTX_NONE);
+
+ RegisterNamespace("CSSLOCAL", 0, 0, tmplput_csslocal, NULL, CTX_NONE);
+ RegisterNamespace("IMPORTANTMESSAGE", 0, 1, tmplput_importantmessage, NULL, CTX_NONE);
+ RegisterNamespace("TRAILING_JAVASCRIPT", 0, 0, tmplput_trailing_javascript, NULL, CTX_NONE);
+ RegisterNamespace("URL:DISPLAYNAME", 0, 1, tmplput_HANDLER_DISPLAYNAME, NULL, CTX_NONE);
+ RegisterNamespace("PACKAGESTRING", 0, 1, tmplput_packagestring, NULL, CTX_NONE);
+
+
+ snprintf(dir, SIZ, "%s/webcit.css", static_local_dir);
+ if (!access(dir, R_OK)) {
+ syslog(LOG_INFO, "Using local Stylesheet [%s]", dir);
+ csslocal = NewStrBufPlain(HKEY("<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\" />"));
+ }
+ else
+ syslog(LOG_INFO, "No Site-local Stylesheet [%s] installed.", dir);
+
+}
+
+void
+ServerStartModule_WEBCIT
+(void)
+{
+ HandlerHash = NewHash(1, NULL);
+}
+
+
+void
+ServerShutdownModule_WEBCIT
+(void)
+{
+ FreeStrBuf(&csslocal);
+ DeleteHash(&HandlerHash);
+}
+
+
+
+void
+SessionNewModule_WEBCIT
+(wcsession *sess)
+{
+ sess->ImportantMsg = NewStrBuf();
+ sess->WBuf = NewStrBufPlain(NULL, SIZ * 4);
+ sess->HBuf = NewStrBufPlain(NULL, SIZ / 4);
+}
+
+void
+SessionDetachModule_WEBCIT
+(wcsession *sess)
+{
+ DeleteHash(&sess->Directory);
+
+ FreeStrBuf(&sess->upload);
+ sess->upload_length = 0;
+
+ FreeStrBuf(&sess->trailing_javascript);
+
+ if (StrLength(sess->WBuf) > SIZ * 30) /* Bigger than 120K? release. */
+ {
+ FreeStrBuf(&sess->WBuf);
+ sess->WBuf = NewStrBuf();
+ }
+ else
+ FlushStrBuf(sess->WBuf);
+ FlushStrBuf(sess->HBuf);
+ if (StrLength(sess->ImportantMsg) > 0) {
+ FlushStrBuf(sess->ImportantMsg);
+ }
+
+}
+
+void
+SessionDestroyModule_WEBCIT
+(wcsession *sess)
+{
+ FreeStrBuf(&sess->WBuf);
+ FreeStrBuf(&sess->HBuf);
+ FreeStrBuf(&sess->ImportantMsg);
+ FreeStrBuf(&sess->PushedDestination);
+}
+
projects / citadel.git / blobdiff