-/*
- * $Id: webcit.c 7459 2009-05-17 08:34:33Z dothebart $
- *
- * 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.
- */
+// The functions in this file handle static pages and objects -- a basic web server.
+//
+// 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.
+
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <errno.h>
-
#include <unistd.h>
#include <stdio.h>
#include <stdarg.h>
-
+#include <stddef.h>
#include "webcit.h"
-#include "webserver.h"
-HashList *StaticFilemappings[4] = {NULL, NULL, NULL, NULL};
-/*
- {
- lprintf(9, "Suspicious request. Ignoring.");
- hprintf("HTTP/1.1 404 Security check failed\r\n");
- hprintf("Content-Type: text/plain\r\n\r\n");
- wprintf("You have sent a malformed or invalid request.\r\n");
- end_burst();
- }
-*/
+unsigned char OnePixelGif[37] = {
+ 0x47, 0x49, 0x46, 0x38, 0x37, 0x61, 0x01, 0x00,
+ 0x01, 0x00, 0x80, 0x00, 0x00, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0x2c, 0x00, 0x00, 0x00, 0x00,
+ 0x01, 0x00, 0x01, 0x00, 0x00, 0x02, 0x02, 0x44,
+ 0x01, 0x00, 0x3b
+};
+
+
+void output_error_pic(const char *ErrMsg1, const char *ErrMsg2) {
+ hprintf("HTTP/1.1 200 %s\r\n", ErrMsg1);
+ hprintf("Content-Type: image/gif\r\n");
+ hprintf("x-webcit-errormessage: %s\r\n", ErrMsg2);
+ begin_burst();
+ StrBufPlain(WC->WBuf, (const char *)OnePixelGif, sizeof(OnePixelGif));
+ end_burst();
+}
+
/*
* dump out static pages from disk
*/
-void output_static(const char *what)
-{
+void output_static(char *prefix) {
int fd;
struct stat statbuf;
off_t bytes;
- off_t count = 0;
const char *content_type;
int len;
const char *Err;
+ char what[SIZ];
+ if (prefix==NULL) {
+ // Force blank.gif Overrides the request line.
+ strcpy(what,"./static/webcit_icons/blank.gif");
+ } else {
+ snprintf(what, sizeof what, "./%s/%s", prefix, (char *)ChrPtr(WC->Hdr->HR.ReqLine));
+ }
+ syslog(LOG_DEBUG, "output_static(%s)", what);
+ len = strlen (what);
+ content_type = GuessMimeByFilename(what, len);
fd = open(what, O_RDONLY);
if (fd <= 0) {
- lprintf(9, "output_static('%s') [%s] -- NOT FOUND --\n", what, ChrPtr(WC->Hdr->this_page));
- hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
- hprintf("Content-Type: text/plain\r\n");
- wprintf("Cannot open %s: %s\r\n", what, strerror(errno));
- end_burst();
- } else {
- len = strlen (what);
- content_type = GuessMimeByFilename(what, len);
-
- if (fstat(fd, &statbuf) == -1) {
- lprintf(9, "output_static('%s') -- FSTAT FAILED --\n", what);
+ syslog(LOG_INFO, "output_static('%s') [%s] : %s", what, ChrPtr(WC->Hdr->this_page), strerror(errno));
+ if (strstr(content_type, "image/") != NULL) {
+ output_error_pic("the file you requsted is gone.", strerror(errno));
+ }
+ else {
hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
hprintf("Content-Type: text/plain\r\n");
- wprintf("Cannot fstat %s: %s\n", what, strerror(errno));
+ begin_burst();
+ wc_printf("Cannot open %s: %s\r\n", what, strerror(errno));
end_burst();
+ }
+ }
+ else {
+ if (fstat(fd, &statbuf) == -1) {
+ syslog(LOG_INFO, "output_static('%s') : %s", what, strerror(errno));
+ if (strstr(content_type, "image/") != NULL) {
+ output_error_pic("Stat failed!", strerror(errno));
+ }
+ else {
+ hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
+ hprintf("Content-Type: text/plain\r\n");
+ begin_burst();
+ wc_printf("Cannot fstat %s: %s\n", what, strerror(errno));
+ end_burst();
+ }
+ if (fd > 0) close(fd);
return;
}
- count = 0;
bytes = statbuf.st_size;
- if (StrBufReadBLOB(WC->WBuf, &fd, 1, bytes, &Err) < 0)
- {
+ if (StrBufReadBLOB(WC->WBuf, &fd, 1, bytes, &Err) < 0) {
if (fd > 0) close(fd);
- lprintf(9, "output_static('%s') -- FREAD FAILED (%s) --\n", what, strerror(errno));
+ syslog(LOG_INFO, "output_static('%s') -- FREAD FAILED (%s) --\n", what, strerror(errno));
hprintf("HTTP/1.1 500 internal server error \r\n");
hprintf("Content-Type: text/plain\r\n");
end_burst();
return;
}
-
close(fd);
-#ifndef TECH_PREVIEW
- lprintf(9, "output_static('%s') %s\n", what, content_type);
-#endif
http_transmit_thing(content_type, 2);
}
if (yesbstr("force_close_session")) {
}
-int LoadStaticDir(const char *DirName, HashList *DirList, const char *RelDir)
-{
- char dirname[PATH_MAX];
- char reldir[PATH_MAX];
- StrBuf *FileName = NULL;
- StrBuf *Dir = NULL;
- StrBuf *WebDir = NULL;
- StrBuf *OneWebName = NULL;
- DIR *filedir = NULL;
- struct dirent d;
- struct dirent *filedir_entry;
- int d_namelen;
- int d_without_ext;
-
- filedir = opendir (DirName);
- if (filedir == NULL) {
- return 0;
- }
-
- Dir = NewStrBufPlain(DirName, -1);
- WebDir = NewStrBufPlain(RelDir, -1);
- OneWebName = NewStrBuf();
-
- while ((readdir_r(filedir, &d, &filedir_entry) == 0) &&
- (filedir_entry != NULL))
- {
- char *PStart;
-#ifdef _DIRENT_HAVE_D_NAMELEN
- d_namelen = filedir_entry->d_namelen;
-#else
- d_namelen = strlen(filedir_entry->d_name);
-#endif
- d_without_ext = d_namelen;
-
- if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
- continue; /* Ignore backup files... */
-
- if ((d_namelen == 1) &&
- (filedir_entry->d_name[0] == '.'))
- continue;
-
- if ((d_namelen == 2) &&
- (filedir_entry->d_name[0] == '.') &&
- (filedir_entry->d_name[1] == '.'))
- continue;
-
- switch (filedir_entry->d_type)
- {
- case DT_DIR:
- /* Skip directories we are not interested in... */
- if ((strcmp(filedir_entry->d_name, ".svn") == 0) ||
- (strcmp(filedir_entry->d_name, "t") == 0))
- break;
- snprintf(dirname, PATH_MAX, "%s/%s",
- DirName, filedir_entry->d_name);
- snprintf(reldir, PATH_MAX, "%s/%s",
- RelDir, filedir_entry->d_name);
- LoadStaticDir(dirname, DirList, reldir);
- break;
- case DT_LNK: /* TODO: check whether its a file or a directory */
- case DT_REG:
- PStart = filedir_entry->d_name;
- FileName = NewStrBufDup(Dir);
- if (ChrPtr(FileName) [ StrLength(FileName) - 1] != '/')
- StrBufAppendBufPlain(FileName, "/", 1, 0);
- StrBufAppendBufPlain(FileName, filedir_entry->d_name, d_namelen, 0);
-
- FlushStrBuf(OneWebName);
- StrBufAppendBuf(OneWebName, WebDir, 0);
- if ((StrLength(OneWebName) != 0) &&
- (ChrPtr(OneWebName) [ StrLength(OneWebName)] != '/'))
- StrBufAppendBufPlain(OneWebName, "/", 1, 0);
- StrBufAppendBufPlain(OneWebName, filedir_entry->d_name, d_namelen, 0);
-
- Put(DirList, SKEY(OneWebName), FileName, HFreeStrBuf);
-/* printf("[%s | %s] \n", ChrPtr(OneWebName), ChrPtr(FileName));*/
- break;
- default:
- break;
- }
-
-
- }
- closedir(filedir);
- FreeStrBuf(&Dir);
- FreeStrBuf(&WebDir);
- FreeStrBuf(&OneWebName);
- return 1;
-}
-
-
-void output_flat_static(void)
-{
- wcsession *WCC = WC;
- void *vFile;
- StrBuf *File;
-
- if (GetHash(StaticFilemappings[0], SKEY(WCC->Hdr->HR.Handler->Name), &vFile) &&
- (vFile != NULL))
- {
- File = (StrBuf*) vFile;
- output_static(ChrPtr(vFile));
- }
+/*
+ * robots.txt
+ */
+void robots_txt(void) {
+ output_headers(0, 0, 0, 0, 0, 0);
+
+ hprintf("Content-type: text/plain\r\n"
+ "Server: %s\r\n"
+ "Connection: close\r\n",
+ PACKAGE_STRING);
+ begin_burst();
+
+ wc_printf("User-agent: *\r\n"
+ "Disallow: /printmsg\r\n"
+ "Disallow: /msgheaders\r\n"
+ "Disallow: /groupdav\r\n"
+ "Disallow: /do_template\r\n"
+ "Disallow: /static\r\n"
+ "Disallow: /display_page\r\n"
+ "Disallow: /readnew\r\n"
+ "Disallow: /display_enter\r\n"
+ "Disallow: /skip\r\n"
+ "Disallow: /ungoto\r\n"
+ "Sitemap: %s/sitemap.xml\r\n"
+ "\r\n"
+ ,
+ ChrPtr(site_prefix)
+ );
+
+ wDumpContent(0);
}
+// These are the various prefixes we can use to fetch static pages.
+void output_static_root(void) { output_static("."); }
+void output_static_static(void) { output_static("static"); }
+void output_static_tinymce(void) { output_static("tiny_mce"); }
+void output_static_acme(void) { output_static(".well-known"); }
-void output_static_safe(HashList *DirList)
-{
- wcsession *WCC = WC;
- void *vFile;
- StrBuf *File;
-
- if (GetHash(DirList, SKEY(WCC->Hdr->HR.ReqLine), &vFile) &&
- (vFile != NULL))
- {
- File = (StrBuf*) vFile;
- output_static(ChrPtr(vFile));
- }
- else {
-///TODO: detect image & output blank image
- }
-}
-void output_static_0(void)
-{
- output_static_safe(StaticFilemappings[0]);
-}
-void output_static_1(void)
-{
- output_static_safe(StaticFilemappings[1]);
-}
-void output_static_2(void)
-{
- output_static_safe(StaticFilemappings[2]);
-}
-void output_static_3(void)
-{
- output_static_safe(StaticFilemappings[3]);
-}
void
ServerStartModule_STATIC
(void)
{
- StaticFilemappings[0] = NewHash(1, NULL);
- StaticFilemappings[1] = NewHash(1, NULL);
- StaticFilemappings[2] = NewHash(1, NULL);
- StaticFilemappings[3] = NewHash(1, NULL);
}
+
+
void
ServerShutdownModule_STATIC
(void)
{
- DeleteHash(&StaticFilemappings[0]);
- DeleteHash(&StaticFilemappings[1]);
- DeleteHash(&StaticFilemappings[2]);
- DeleteHash(&StaticFilemappings[3]);
}
-
void
InitModule_STATIC
(void)
{
- LoadStaticDir(static_dirs[0], StaticFilemappings[0], "");
- LoadStaticDir(static_dirs[1], StaticFilemappings[1], "");
- LoadStaticDir(static_dirs[2], StaticFilemappings[2], "");
- LoadStaticDir(static_dirs[3], StaticFilemappings[3], "");
-
- WebcitAddUrlHandler(HKEY("robots.txt"), output_flat_static, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
- WebcitAddUrlHandler(HKEY("favicon.ico"), output_flat_static, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
- WebcitAddUrlHandler(HKEY("static"), output_static_0, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
- WebcitAddUrlHandler(HKEY("static.local"), output_static_1, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
- WebcitAddUrlHandler(HKEY("tinymce"), output_static_2, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
+ WebcitAddUrlHandler(HKEY("robots.txt"), "", 0, robots_txt, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY);
+ WebcitAddUrlHandler(HKEY("favicon.ico"), "", 0, output_static_root, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY);
+ WebcitAddUrlHandler(HKEY("static"), "", 0, output_static_static, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY);
+ WebcitAddUrlHandler(HKEY("tinymce"), "", 0, output_static_tinymce, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY);
+ WebcitAddUrlHandler(HKEY("tiny_mce"), "", 0, output_static_tinymce, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY);
+ WebcitAddUrlHandler(HKEY(".well-known"), "", 0, output_static_acme, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY);
}
projects / citadel.git / blobdiff