X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=webcit%2Fstatic.c;h=34a656ee2b6058ed3203c4fc5d70cf9ad816dd98;hb=HEAD;hp=46770bf1220de5bec6d05e2d02b291bc66262715;hpb=097742f28f8ed713be6e99e6e74ef2f0c248312e;p=citadel.git diff --git a/webcit/static.c b/webcit/static.c index 46770bf12..7a12b4d0e 100644 --- a/webcit/static.c +++ b/webcit/static.c @@ -1,86 +1,103 @@ -/* - * 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 #include #include #include - #include #include #include #include +#include "webcit.h" -#include "webcit.h" -#include "webserver.h" +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 +}; -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"); - wc_printf("You have sent a malformed or invalid request.\r\n"); - end_burst(); - } -*/ +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"); - begin_burst(); - wc_printf("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"); begin_burst(); - wc_printf("Cannot fstat %s: %s\n", what, strerror(errno)); + 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")) { @@ -89,221 +106,67 @@ void output_static(const char *what) } -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_type = 0; - int d_namelen; - int d_without_ext; - int istoplevel; - - filedir = opendir (DirName); - if (filedir == NULL) { - return 0; - } - - d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1); - if (d == NULL) { - return 0; - } - - Dir = NewStrBufPlain(DirName, -1); - WebDir = NewStrBufPlain(RelDir, -1); - istoplevel = IsEmptyStr(RelDir); - 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; - d_type = filedir_entry->d_type; -#else - -#ifndef DT_UNKNOWN -#define DT_UNKNOWN 0 -#define DT_DIR 4 -#define DT_REG 8 -#define DT_LNK 10 - -#define IFTODT(mode) (((mode) & 0170000) >> 12) -#define DTTOIF(dirtype) ((dirtype) << 12) -#endif - d_namelen = strlen(filedir_entry->d_name); - d_type = DT_UNKNOWN; -#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; - - if (d_type == DT_UNKNOWN) { - struct stat s; - char path[PATH_MAX]; - snprintf(path, PATH_MAX, "%s/%s", - DirName, filedir_entry->d_name); - if (stat(path, &s) == 0) { - d_type = IFTODT(s.st_mode); - } - } - - switch (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); - if (istoplevel) - snprintf(reldir, PATH_MAX, "%s/", - filedir_entry->d_name); - else - snprintf(reldir, PATH_MAX, "%s/%s/", - RelDir, filedir_entry->d_name); - StripSlashes(dirname, 1); - StripSlashes(reldir, 1); - 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) - 1] != '/')) - StrBufAppendBufPlain(OneWebName, "/", 1, 0); - StrBufAppendBufPlain(OneWebName, filedir_entry->d_name, d_namelen, 0); - - Put(DirList, SKEY(OneWebName), FileName, HFreeStrBuf); - /* lprintf(9, "[%s | %s]\n", ChrPtr(OneWebName), ChrPtr(FileName)); */ - break; - default: - break; - } - - - } - free(d); - closedir(filedir); - FreeStrBuf(&Dir); - FreeStrBuf(&WebDir); - FreeStrBuf(&OneWebName); - return 1; -} - - -void output_flat_static(void) -{ - wcsession *WCC = WC; - void *vFile; - StrBuf *File; - - if (WCC->Hdr->HR.Handler == NULL) - return; - 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); } -extern void do_404(void); -void output_static_safe(HashList *DirList) -{ - wcsession *WCC = WC; - void *vFile; - StrBuf *File; +// 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"); } - if (GetHash(DirList, SKEY(WCC->Hdr->HR.ReqLine), &vFile) && - (vFile != NULL)) - { - File = (StrBuf*) vFile; - output_static(ChrPtr(vFile)); - } - else { - lprintf(1, "output_static_safe() file %s not found. \n", - ChrPtr(WCC->Hdr->HR.ReqLine)); -///TODO: detect image & output blank image - do_404(); - } -} -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"), "", 0, output_flat_static, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY); - WebcitAddUrlHandler(HKEY("favicon.ico"), "", 0, output_flat_static, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY); - WebcitAddUrlHandler(HKEY("static"), "", 0, output_static_0, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY); - WebcitAddUrlHandler(HKEY("static.local"), "", 0, output_static_1, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY); - WebcitAddUrlHandler(HKEY("tinymce"), "", 0, output_static_2, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY); - WebcitAddUrlHandler(HKEY("tiny_mce"), "", 0, output_static_2, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC|LOGCHATTY); + 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); }