/* File Access HTFile.c ** =========== ** ** This is unix-specific code in general, with some VMS bits. ** These are routines for file access used by browsers. ** Development of this module for Unix DIRED_SUPPORT in Lynx ** regrettably has has been conducted in a manner with now ** creates a major impediment for hopes of adapting Lynx to ** a newer version of the library. ** ** History: ** Feb 91 Written Tim Berners-Lee CERN/CN ** Apr 91 vms-vms access included using DECnet syntax ** 26 Jun 92 (JFG) When running over DECnet, suppressed FTP. ** Fixed access bug for relative names on VMS. ** Sep 93 (MD) Access to VMS files allows sharing. ** 15 Nov 93 (MD) Moved HTVMSname to HTVMSUTILS.C ** 27 Dec 93 (FM) FTP now works with VMS hosts. ** FTP path must be Unix-style and cannot include ** the device or top directory. */ #include #ifndef VMS /* #define LONG_LIST */ /* Define this for long style unix listings (ls -l) */ /* #define NO_PARENT_DIR_REFERENCE */ /* Define this for no parent links */ #endif /* !VMS */ #ifdef DOSPATH #define HAVE_READDIR 1 #define USE_DIRENT #include #endif /* DOSPATH */ #include /* Implemented here */ #ifdef VMS #include #endif /* VMS */ #ifdef USE_ZLIB #include #endif #define INFINITY 512 /* file name length @@ FIXME */ #define MULTI_SUFFIX ".multi" /* Extension for scanning formats */ #include #include #ifndef DECNET #include #endif /* !DECNET */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include typedef struct _HTSuffix { char * suffix; HTAtom * rep; HTAtom * encoding; char * desc; float quality; } HTSuffix; #ifndef NGROUPS #ifdef NGROUPS_MAX #define NGROUPS NGROUPS_MAX #else #define NGROUPS 32 #endif /* NGROUPS_MAX */ #endif /* NGROUPS */ #ifndef GETGROUPS_T #define GETGROUPS_T int #endif #include /* For directory object building */ #define PUTC(c) (*target->isa->put_character)(target, c) #define PUTS(s) (*target->isa->put_string)(target, s) #define START(e) (*target->isa->start_element)(target, e, 0, 0, -1, 0) #define END(e) (*target->isa->end_element)(target, e, 0) #define MAYBE_END(e) if (HTML_dtd.tags[e].contents != SGML_EMPTY) \ (*target->isa->end_element)(target, e, 0) #define FREE_TARGET (*target->isa->_free)(target) #define ABORT_TARGET (*targetClass._abort)(target, NULL); struct _HTStructured { CONST HTStructuredClass * isa; /* ... */ }; /* ** Controlling globals. */ PUBLIC int HTDirAccess = HT_DIR_OK; #ifdef DIRED_SUPPORT PUBLIC int HTDirReadme = HT_DIR_README_NONE; #else PUBLIC int HTDirReadme = HT_DIR_README_TOP; #endif /* DIRED_SUPPORT */ extern BOOL HTPassEightBitRaw; extern HTCJKlang HTCJK; PRIVATE char *HTMountRoot = "/Net/"; /* Where to find mounts */ #ifdef VMS PRIVATE char *HTCacheRoot = "/WWW$SCRATCH"; /* Where to cache things */ #else PRIVATE char *HTCacheRoot = "/tmp/W3_Cache_"; /* Where to cache things */ #endif /* VMS */ /*PRIVATE char *HTSaveRoot = "$(HOME)/WWW/";*/ /* Where to save things */ /* ** Suffix registration. */ PRIVATE HTList * HTSuffixes = 0; PRIVATE HTSuffix no_suffix = { "*", NULL, NULL, NULL, 1.0 }; PRIVATE HTSuffix unknown_suffix = { "*.*", NULL, NULL, NULL, 1.0}; #ifdef _WINDOWS int exists(char *filename) { return (access(filename,0)==0); } #endif /* To free up the suffixes at program exit. ** ---------------------------------------- */ PRIVATE void free_suffixes NOPARAMS; #ifdef LONG_LIST PRIVATE void LYListFmtParse ARGS5( char *, fmtstr, char *, file, HTStructured *, target, char *, entry, char *, tail) { char c; char *s; char *end; char *start; char *str = NULL; struct stat st; char buf[512]; char fmt[512]; char type; char *name; time_t now; char *datestr; int len; #define SEC_PER_YEAR (60 * 60 * 24 * 365) static char *pbits[] = { "---", "--x", "-w-", "-wx", "r--", "r-x", "rw-", "rwx", 0 }; static char *psbits[] = { "--S", "--s", "-wS", "-ws", "r-S", "r-s", "rwS", "rws", 0 }; #define PBIT(a, n, s) (s) ? psbits[((a) >> (n)) & 0x7] : \ pbits[((a) >> (n)) & 0x7] #ifdef S_ISVTX static char *ptbits[] = { "--T", "--t", "-wT", "-wt", "r-T", "r-t", "rwT", "rwt", 0 }; #define PTBIT(a, s) (s) ? ptbits[(a) & 0x7] : pbits[(a) & 0x7] #else #define PTBIT(a, s) (a, 0, 0) #endif if (lstat(file, &st) < 0) fmtstr = "%a"; /* can't stat so just do anchor */ StrAllocCopy(str, fmtstr); s = str; end = str + strlen(str); START(HTML_PRE); while (*s) { start = s; while (*s) { if (*s == '%') { if (*(s+1) == '%') /* literal % */ s++; else break; } s++; } /* s is positioned either at a % or at \0 */ *s = '\0'; if (s > start) { /* some literal chars. */ PUTS(start); } if (s == end) break; start = ++s; while (isdigit(*s) || *s == '.' || *s == '-') s++; c = *s; /* the format char. or \0 */ *s = '\0'; buf[0] = '\0'; switch (c) { case '\0': break; case 'A': case 'a': /* anchor */ HTDirEntry(target, tail, entry); sprintf(fmt, "%%%ss", start); sprintf(buf, fmt, entry); PUTS(buf); END(HTML_A); #ifdef S_IFLNK if (c != 'A' && S_ISLNK(st.st_mode) && (len = readlink(file, buf, sizeof(buf))) >= 0) { PUTS(" -> "); buf[len] = '\0'; PUTS(buf); } #endif *buf = '\0'; break; case 'd': /* date */ now = time(0); datestr = ctime(&st.st_mtime); if ((now - st.st_mtime) < SEC_PER_YEAR/2) /* ** MMM DD HH:MM */ sprintf(buf, "%.12s", datestr + 4); else /* ** MMM DD YYYY */ sprintf(buf, "%.7s %.4s ", datestr + 4, datestr + 20); sprintf(fmt, "%%%ss", start); sprintf(buf, fmt, buf); break; case 's': /* size in bytes */ sprintf(fmt, "%%%sd", start); sprintf(buf, fmt, st.st_size); break; case 'K': /* size in Kilobytes but not for directories */ if (S_ISDIR(st.st_mode)) { sprintf(fmt, "%%%ss ", start); sprintf(buf, fmt, ""); break; } /* FALL THROUGH */ case 'k': /* size in Kilobytes */ sprintf(fmt, "%%%sdK", start); sprintf(buf, fmt, (st.st_size+1023)/1024); break; case 'p': /* unix-style permission bits */ switch(st.st_mode & S_IFMT) { case S_IFIFO: type = 'p'; break; case S_IFCHR: type = 'c'; break; case S_IFDIR: type = 'd'; break; case S_IFREG: type = '-'; break; #ifdef S_IFBLK case S_IFBLK: type = 'b'; break; #endif #ifdef S_IFLNK case S_IFLNK: type = 'l'; break; #endif #ifdef S_IFSOCK # ifdef S_IFIFO /* some older machines (e.g., apollo) have a conflict */ # if S_IFIFO != S_IFSOCK case S_IFSOCK: type = 's'; break; # endif # else case S_IFSOCK: type = 's'; break; # endif #endif /* S_IFSOCK */ default: type = '?'; break; } sprintf(buf, "%c%s%s%s", type, PBIT(st.st_mode, 6, st.st_mode & S_ISUID), PBIT(st.st_mode, 3, st.st_mode & S_ISGID), PTBIT(st.st_mode, st.st_mode & S_ISVTX)); sprintf(fmt, "%%%ss", start); sprintf(buf, fmt, buf); break; case 'o': /* owner */ sprintf(fmt, "%%%ss", start); name = HTAA_UidToName (st.st_uid); if (*name) { sprintf(fmt, "%%%ss", start); sprintf(buf, fmt, name); } else { sprintf(fmt, "%%%sd", start); sprintf(buf, fmt, st.st_uid); } break; case 'g': /* group */ name = HTAA_GidToName(st.st_gid); if (*name) { sprintf(fmt, "%%%ss", start); sprintf(buf, fmt, name); } else { sprintf(fmt, "%%%sd", start); sprintf(buf, fmt, st.st_gid); } break; case 'l': /* link count */ sprintf(fmt, "%%%sd", start); sprintf(buf, fmt, st.st_nlink); break; default: fprintf(stderr, "Unknown format character `%c' in list format\n", c); break; } PUTS(buf); s++; } END(HTML_PRE); PUTS("\n"); FREE(str); } #endif /* LONG_LIST */ /* Define the representation associated with a file suffix. ** -------------------------------------------------------- ** ** Calling this with suffix set to "*" will set the default ** representation. ** Calling this with suffix set to "*.*" will set the default ** representation for unknown suffix files which contain a ".". ** ** The encoding parameter can give a trivial (8bit, 7bit, binary) ** or real (gzip, compress) encoding. ** ** If filename suffix is already defined with the same encoding ** its previous definition is overridden. */ PUBLIC void HTSetSuffix5 ARGS5( CONST char *, suffix, CONST char *, representation, CONST char *, encoding, CONST char *, desc, float, value) { HTSuffix * suff; BOOL trivial_enc = IsUnityEncStr(encoding); if (strcmp(suffix, "*") == 0) suff = &no_suffix; else if (strcmp(suffix, "*.*") == 0) suff = &unknown_suffix; else { HTList *cur = HTSuffixes; while (NULL != (suff = (HTSuffix*)HTList_nextObject(cur))) { if (suff->suffix && 0 == strcmp(suff->suffix, suffix) && ((trivial_enc && IsUnityEnc(suff->encoding)) || (!trivial_enc && !IsUnityEnc(suff->encoding) && strcmp(encoding, HTAtom_name(suff->encoding)) == 0))) break; } if (!suff) { /* Not found -- create a new node */ suff = (HTSuffix *) calloc(1, sizeof(HTSuffix)); if (suff == NULL) outofmem(__FILE__, "HTSetSuffix"); /* ** Memory leak fixed. ** 05-28-94 Lynx 2-3-1 Garrett Arch Blythe */ if (!HTSuffixes) { HTSuffixes = HTList_new(); atexit(free_suffixes); } HTList_addObject(HTSuffixes, suff); StrAllocCopy(suff->suffix, suffix); } } if (representation) suff->rep = HTAtom_for(representation); /* ** Memory leak fixed. ** 05-28-94 Lynx 2-3-1 Garrett Arch Blythe ** Invariant code removed. */ suff->encoding = HTAtom_for(encoding); StrAllocCopy(suff->desc, desc); suff->quality = value; } /* ** Purpose: Free all added suffixes. ** Arguments: void ** Return Value: void ** Remarks/Portability/Dependencies/Restrictions: ** To be used at program exit. ** Revision History: ** 05-28-94 created Lynx 2-3-1 Garrett Arch Blythe */ PRIVATE void free_suffixes NOARGS { HTSuffix * suff = NULL; /* ** Loop through all suffixes. */ while (!HTList_isEmpty(HTSuffixes)) { /* ** Free off each item and its members if need be. */ suff = (HTSuffix *)HTList_removeLastObject(HTSuffixes); FREE(suff->suffix); FREE(suff->desc); FREE(suff); } /* ** Free off the list itself. */ HTList_delete(HTSuffixes); HTSuffixes = NULL; } /* Send README file. ** ----------------- ** ** If a README file exists, then it is inserted into the document here. */ #ifdef HAVE_READDIR PRIVATE void do_readme ARGS2(HTStructured *, target, CONST char *, localname) { FILE * fp; char * readme_file_name = malloc(strlen(localname)+ 1 + strlen(HT_DIR_README_FILE) + 1); if (readme_file_name == NULL) outofmem(__FILE__, "do_readme"); strcpy(readme_file_name, localname); strcat(readme_file_name, "/"); strcat(readme_file_name, HT_DIR_README_FILE); fp = fopen(readme_file_name, "r"); if (fp) { HTStructuredClass targetClass; targetClass = *target->isa; /* (Can't init agregate in K&R) */ START(HTML_PRE); for (;;){ char c = fgetc(fp); if (c == (char)EOF) break; #ifdef NOTDEFINED switch (c) { case '&': case '<': case '>': PUTC('&'); PUTC('#'); PUTC((char)(c / 10)); PUTC((char) (c % 10)); PUTC(';'); break; /* case '\n': PUTC('\r'); Bug removed thanks to joe@athena.mit.edu */ default: PUTC(c); } #else PUTC(c); #endif /* NOTDEFINED */ } END(HTML_PRE); fclose(fp); } } #endif /* HAVE_READDIR */ /* Make the cache file name for a W3 document. ** ------------------------------------------- ** Make up a suitable name for saving the node in ** ** E.g. /tmp/WWW_Cache_news/1234@cernvax.cern.ch ** /tmp/WWW_Cache_http/crnvmc/FIND/xx.xxx.xx ** ** On exit: ** Returns a malloc'ed string which must be freed by the caller. */ PUBLIC char * HTCacheFileName ARGS1( CONST char *, name) { char * acc_method = HTParse(name, "", PARSE_ACCESS); char * host = HTParse(name, "", PARSE_HOST); char * path = HTParse(name, "", PARSE_PATH+PARSE_PUNCTUATION); char * result; result = (char *)malloc( strlen(HTCacheRoot)+strlen(acc_method) +strlen(host)+strlen(path)+6+1); if (result == NULL) outofmem(__FILE__, "HTCacheFileName"); sprintf(result, "%s/WWW/%s/%s%s", HTCacheRoot, acc_method, host, path); FREE(path); FREE(acc_method); FREE(host); return result; } /* Open a file for write, creating the path. ** ----------------------------------------- */ #ifdef NOT_IMPLEMENTED PRIVATE int HTCreatePath ARGS1(CONST char *,path) { return -1; } #endif /* NOT_IMPLEMENTED */ /* Convert filenames between local and WWW formats. ** ------------------------------------------------ ** Make up a suitable name for saving the node in ** ** E.g. $(HOME)/WWW/news/1234@cernvax.cern.ch ** $(HOME)/WWW/http/crnvmc/FIND/xx.xxx.xx ** ** On exit: ** Returns a malloc'ed string which must be freed by the caller. */ PUBLIC char * HTnameOfFile_WWW ARGS3( CONST char *, name, BOOL, WWW_prefix, BOOL, expand_all) { char * acc_method = HTParse(name, "", PARSE_ACCESS); char * host = HTParse(name, "", PARSE_HOST); char * path = HTParse(name, "", PARSE_PATH+PARSE_PUNCTUATION); char * home; char * result = NULL; if (expand_all) HTUnEscape(path); /* Interpret all % signs */ else HTUnEscapeSome(path, "/"); /* Interpret % signs for path delims */ if (0 == strcmp(acc_method, "file") /* local file */ || !*acc_method) { /* implicitly local? */ if ((0 == strcasecomp(host, HTHostName())) || (0 == strcasecomp(host, "localhost")) || !*host) { CTRACE(tfp, "Node `%s' means path `%s'\n", name, path); #ifdef DOSPATH StrAllocCopy(result, HTDOS_name(path)); #else #ifdef __EMX__ if (path[0] == '/' && isalpha(path[1]) && path[2] == ':') /* pesky leading slash */ StrAllocCopy(result, path+1); else StrAllocCopy(result, path); CTRACE(tfp, "EMX hack changed `%s' to `%s'\n", path, result); #else StrAllocCopy(result, path); #endif /* __EMX__ */ #endif /* DOSPATH */ } else if (WWW_prefix) { result = (char *)malloc( strlen("/Net/")+strlen(host)+strlen(path)+1); if (result == NULL) outofmem(__FILE__, "HTLocalName"); sprintf(result, "%s%s%s", "/Net/", host, path); CTRACE(tfp, "Node `%s' means file `%s'\n", name, result); } else { StrAllocCopy(result, path); } } else if (WWW_prefix) { /* other access */ #ifdef VMS if ((home = getenv("HOME")) == 0) home = HTCacheRoot; else home = HTVMS_wwwName(home); #else if ((home = getenv("HOME")) == 0) home = "/tmp"; #endif /* VMS */ result = (char *)malloc( strlen(home)+strlen(acc_method)+strlen(host)+strlen(path)+6+1); if (result == NULL) outofmem(__FILE__, "HTLocalName"); sprintf(result, "%s/WWW/%s/%s%s", home, acc_method, host, path); } else { StrAllocCopy(result, path); } FREE(host); FREE(path); FREE(acc_method); return result; } /* Make a WWW name from a full local path name. ** -------------------------------------------- ** ** Bugs: ** At present, only the names of two network root nodes are hand-coded ** in and valid for the NeXT only. This should be configurable in ** the general case. */ PUBLIC char * WWW_nameOfFile ARGS1( CONST char *, name) { char * result; #ifdef NeXT if (0 == strncmp("/private/Net/", name, 13)) { result = (char *)malloc(7+strlen(name+13)+1); if (result == NULL) outofmem(__FILE__, "WWW_nameOfFile"); sprintf(result, "file://%s", name+13); } else #endif /* NeXT */ if (0 == strncmp(HTMountRoot, name, 5)) { result = (char *)malloc(7+strlen(name+5)+1); if (result == NULL) outofmem(__FILE__, "WWW_nameOfFile"); sprintf(result, "file://%s", name+5); } else { result = (char *)malloc(7+strlen(HTHostName())+strlen(name)+1); if (result == NULL) outofmem(__FILE__, "WWW_nameOfFile"); sprintf(result, "file://%s%s", HTHostName(), name); } CTRACE(tfp, "File `%s'\n\tmeans node `%s'\n", name, result); return result; } /* Determine a suitable suffix, given the representation. ** ------------------------------------------------------ ** ** On entry, ** rep is the atomized MIME style representation ** enc is an encoding, trivial (8bit, binary, etc.) or gzip etc. ** ** On exit: ** Returns a pointer to a suitable suffix string if one has been ** found, else "". */ PUBLIC CONST char * HTFileSuffix ARGS2( HTAtom*, rep, CONST char *, enc) { HTSuffix * suff; #ifdef FNAMES_8_3 HTSuffix * first_found = NULL; #endif BOOL trivial_enc; int n; int i; #define NO_INIT /* don't init anymore since I do it in Lynx at startup */ #ifndef NO_INIT if (!HTSuffixes) HTFileInit(); #endif /* !NO_INIT */ trivial_enc = IsUnityEncStr(enc); n = HTList_count(HTSuffixes); for (i = 0; i < n; i++) { suff = (HTSuffix *)HTList_objectAt(HTSuffixes, i); if (suff->rep == rep && #if defined(VMS) || defined(FNAMES_8_3) /* Don't return a suffix whose first char is a dot, and which has more dots or asterisks after that, for these systems - kw */ (!suff->suffix || !suff->suffix[0] || suff->suffix[0] != '.' || (strchr(suff->suffix + 1, '.') == NULL && strchr(suff->suffix + 1, '*') == NULL)) && #endif ((trivial_enc && IsUnityEnc(suff->encoding)) || (!trivial_enc && !IsUnityEnc(suff->encoding) && strcmp(enc, HTAtom_name(suff->encoding)) == 0))) { #ifdef FNAMES_8_3 if (suff->suffix && (strlen(suff->suffix) <= 4)) { /* * If length of suffix (including dot) is 4 or smaller, * return this one even if we found a longer one * earlier - kw */ return suff->suffix; } else if (!first_found) { first_found = suff; /* remember this one */ } #else return suff->suffix; /* OK -- found */ #endif } } #ifdef FNAMES_8_3 if (first_found) return first_found->suffix; #endif return ""; /* Dunno */ } /* Determine file format from file name. ** ------------------------------------- ** ** This version will return the representation and also set ** a variable for the encoding. ** ** Encoding may be a unity encoding (binary, 8bit, etc.) or ** a content-coding like gzip, compress. ** ** It will handle for example x.txt, x.txt,Z, x.Z */ PUBLIC HTFormat HTFileFormat ARGS3( CONST char *, filename, HTAtom **, pencoding, CONST char**, pdesc) { HTSuffix * suff; int n; int i; int lf; #ifdef VMS char *semicolon = NULL; #endif /* VMS */ if (pencoding) *pencoding = NULL; if (pdesc) *pdesc = NULL; if (LYforce_HTML_mode) { if (pencoding) *pencoding = WWW_ENC_8BIT; return WWW_HTML; } #ifdef VMS /* ** Trim at semicolon if a version number was ** included, so it doesn't interfere with the ** code for getting the MIME type. - FM */ if ((semicolon = strchr(filename, ';')) != NULL) *semicolon = '\0'; #endif /* VMS */ #ifndef NO_INIT if (!HTSuffixes) HTFileInit(); #endif /* !NO_INIT */ lf = strlen(filename); n = HTList_count(HTSuffixes); for (i = 0; i < n; i++) { int ls; suff = (HTSuffix *)HTList_objectAt(HTSuffixes, i); ls = strlen(suff->suffix); if ((ls <= lf) && 0 == strcasecomp(suff->suffix, filename + lf - ls)) { int j; if (pencoding) *pencoding = suff->encoding; if (pdesc) *pdesc = suff->desc; if (suff->rep) { #ifdef VMS if (semicolon != NULL) *semicolon = ';'; #endif /* VMS */ return suff->rep; /* OK -- found */ } for (j = 0; j < n; j++) { /* Got encoding, need representation */ int ls2; suff = (HTSuffix *)HTList_objectAt(HTSuffixes, j); ls2 = strlen(suff->suffix); if ((ls + ls2 <= lf) && 0 == strncasecomp( suff->suffix, filename + lf - ls -ls2, ls2)) { if (suff->rep) { if (pdesc && !(*pdesc)) *pdesc = suff->desc; #ifdef VMS if (semicolon != NULL) *semicolon = ';'; #endif /* VMS */ return suff->rep; } } } } } /* defaults tree */ suff = strchr(filename, '.') ? /* Unknown suffix */ ( unknown_suffix.rep ? &unknown_suffix : &no_suffix) : &no_suffix; /* ** Set default encoding unless found with suffix already. */ if (pencoding && !*pencoding) *pencoding = suff->encoding ? suff->encoding : HTAtom_for("binary"); #ifdef VMS if (semicolon != NULL) *semicolon = ';'; #endif /* VMS */ return suff->rep ? suff->rep : WWW_BINARY; } /* Revise the file format in relation to the Lynx charset. - FM ** ------------------------------------------------------- ** ** This checks the format associated with an anchor for ** an extended MIME Content-Type, and if a charset is ** indicated, sets Lynx up for proper handling in relation ** to the currently selected character set. - FM */ PUBLIC HTFormat HTCharsetFormat ARGS3( HTFormat, format, HTParentAnchor *, anchor, int, default_LYhndl) { char *cp = NULL, *cp1, *cp2, *cp3 = NULL, *cp4; BOOL chartrans_ok = FALSE; int chndl = -1; FREE(anchor->charset); StrAllocCopy(cp, format->name); LYLowerCase(cp); if (((cp1 = strchr(cp, ';')) != NULL) && (cp2 = strstr(cp1, "charset")) != NULL) { CTRACE(tfp, "HTCharsetFormat: Extended MIME Content-Type is %s\n", format->name); cp2 += 7; while (*cp2 == ' ' || *cp2 == '=') cp2++; StrAllocCopy(cp3, cp2); /* copy to mutilate more */ for (cp4 = cp3; (*cp4 != '\0' && *cp4 != '"' && *cp4 != ';' && *cp4 != ':' && !WHITE(*cp4)); cp4++) { ; /* do nothing */ } *cp4 = '\0'; cp4 = cp3; chndl = UCGetLYhndl_byMIME(cp3); if (UCCanTranslateFromTo(chndl, current_char_set)) { chartrans_ok = YES; *cp1 = '\0'; format = HTAtom_for(cp); StrAllocCopy(anchor->charset, cp4); HTAnchor_setUCInfoStage(anchor, chndl, UCT_STAGE_MIME, UCT_SETBY_MIME); } else if (chndl < 0) { /* ** Got something but we don't recognize it. */ chndl = UCLYhndl_for_unrec; if (chndl < 0) /* ** UCLYhndl_for_unrec not defined :-( ** fallback to UCLYhndl_for_unspec which always valid. */ chndl = UCLYhndl_for_unspec; /* always >= 0 */ if (UCCanTranslateFromTo(chndl, current_char_set)) { chartrans_ok = YES; HTAnchor_setUCInfoStage(anchor, chndl, UCT_STAGE_MIME, UCT_SETBY_DEFAULT); } } if (chartrans_ok) { LYUCcharset *p_in = HTAnchor_getUCInfoStage(anchor, UCT_STAGE_MIME); LYUCcharset *p_out = HTAnchor_setUCInfoStage(anchor, current_char_set, UCT_STAGE_HTEXT, UCT_SETBY_DEFAULT); if (!p_out) { /* ** Try again. */ p_out = HTAnchor_getUCInfoStage(anchor, UCT_STAGE_HTEXT); } if (!strcmp(p_in->MIMEname, "x-transparent")) { HTPassEightBitRaw = TRUE; HTAnchor_setUCInfoStage(anchor, HTAnchor_getUCLYhndl(anchor, UCT_STAGE_HTEXT), UCT_STAGE_MIME, UCT_SETBY_DEFAULT); } if (!strcmp(p_out->MIMEname, "x-transparent")) { HTPassEightBitRaw = TRUE; HTAnchor_setUCInfoStage(anchor, HTAnchor_getUCLYhndl(anchor, UCT_STAGE_MIME), UCT_STAGE_HTEXT, UCT_SETBY_DEFAULT); } if (p_in->enc != UCT_ENC_CJK) { HTCJK = NOCJK; if (!(p_in->codepoints & UCT_CP_SUBSETOF_LAT1) && chndl == current_char_set) { HTPassEightBitRaw = TRUE; } } else if (p_out->enc == UCT_ENC_CJK) { Set_HTCJK(p_in->MIMEname, p_out->MIMEname); } } else { /* ** Hope it's a match, for now. - FM */ *cp1 = '\0'; format = HTAtom_for(cp); cp1 = &cp4[10]; while (*cp1 && isdigit((unsigned char)(*cp1))) cp1++; *cp1 = '\0'; StrAllocCopy(anchor->charset, cp4); HTPassEightBitRaw = TRUE; HTAlert(anchor->charset); } FREE(cp3); } else if (cp1 != NULL) { /* ** No charset parameter is present. ** Ignore all other parameters, as ** we do when charset is present. - FM */ *cp1 = '\0'; format = HTAtom_for(cp); } FREE(cp); /* ** Set up defaults, if needed. - FM */ if (!chartrans_ok && !anchor->charset && default_LYhndl >= 0) { HTAnchor_setUCInfoStage(anchor, default_LYhndl, UCT_STAGE_MIME, UCT_SETBY_DEFAULT); } HTAnchor_copyUCInfoStage(anchor, UCT_STAGE_PARSER, UCT_STAGE_MIME, -1); return format; } /* Determine value from file name. ** ------------------------------- ** */ PUBLIC float HTFileValue ARGS1( CONST char *, filename) { HTSuffix * suff; int n; int i; int lf = strlen(filename); #ifndef NO_INIT if (!HTSuffixes) HTFileInit(); #endif /* !NO_INIT */ n = HTList_count(HTSuffixes); for (i = 0; i < n; i++) { int ls; suff = (HTSuffix *)HTList_objectAt(HTSuffixes, i); ls = strlen(suff->suffix); if ((ls <= lf) && 0==strcmp(suff->suffix, filename + lf - ls)) { CTRACE(tfp, "File: Value of %s is %.3f\n", filename, suff->quality); return suff->quality; /* OK -- found */ } } return 0.3; /* Dunno! */ } /* Determine write access to a file. ** --------------------------------- ** ** On exit: ** Returns YES if file can be accessed and can be written to. ** ** Bugs: ** 1. No code for non-unix systems. ** 2. Isn't there a quicker way? */ #if defined(HAVE_CONFIG_H) #ifndef HAVE_GETGROUPS #define NO_GROUPS #endif #else #ifdef VMS #define NO_GROUPS #endif /* VMS */ #ifdef NO_UNIX_IO #define NO_GROUPS #endif /* NO_UNIX_IO */ #ifdef PCNFS #define NO_GROUPS #endif /* PCNFS */ #ifdef NOUSERS #define NO_GROUPS #endif /* PCNFS */ #endif /* HAVE_CONFIG_H */ PUBLIC BOOL HTEditable ARGS1( CONST char *, filename) { #ifdef NO_GROUPS return NO; /* Safe answer till we find the correct algorithm */ #else GETGROUPS_T groups[NGROUPS]; uid_t myUid; int ngroups; /* The number of groups */ struct stat fileStatus; int i; if (stat(filename, &fileStatus)) /* Get details of filename */ return NO; /* Can't even access file! */ ngroups = getgroups(NGROUPS, groups); /* Groups to which I belong */ myUid = geteuid(); /* Get my user identifier */ if (TRACE) { int i2; fprintf(tfp, "File mode is 0%o, uid=%d, gid=%d. My uid=%d, %d groups (", (unsigned int) fileStatus.st_mode, (int) fileStatus.st_uid, (int) fileStatus.st_gid, (int) myUid, (int) ngroups); for (i2 = 0; i2 < ngroups; i2++) fprintf(tfp, " %d", (int) groups[i2]); fprintf(tfp, ")\n"); } if (fileStatus.st_mode & 0002) /* I can write anyway? */ return YES; if ((fileStatus.st_mode & 0200) /* I can write my own file? */ && (fileStatus.st_uid == myUid)) return YES; if (fileStatus.st_mode & 0020) /* Group I am in can write? */ { for (i = 0; i < ngroups; i++) { if (groups[i] == fileStatus.st_gid) return YES; } } CTRACE(tfp, "\tFile is not editable.\n"); return NO; /* If no excuse, can't do */ #endif /* NO_GROUPS */ } /* Make a save stream. ** ------------------- ** ** The stream must be used for writing back the file. ** @@@ no backup done */ PUBLIC HTStream * HTFileSaveStream ARGS1( HTParentAnchor *, anchor) { CONST char * addr = HTAnchor_address((HTAnchor*)anchor); char * localname = HTLocalName(addr); FILE* fp = fopen(localname, "w"); if (!fp) return NULL; return HTFWriter_new(fp); } /* Output one directory entry. ** --------------------------- */ PUBLIC void HTDirEntry ARGS3( HTStructured *, target, CONST char *, tail, CONST char *, entry) { char * relative = NULL; char * escaped = NULL; int len; if (0 == strcmp(entry,"../")) { /* ** Undo slash appending for anchor creation. */ StrAllocCopy(escaped,".."); } else { escaped = HTEscape(entry, URL_XPALPHAS); if (((len = strlen(escaped)) > 2) && escaped[(len - 3)] == '%' && escaped[(len - 2)] == '2' && TOUPPER(escaped[(len - 1)]) == 'F') { escaped[(len - 3)] = '\0'; } } if (tail == NULL || *tail == '\0') { /* ** Handle extra slash at end of path. */ HTStartAnchor(target, NULL, (escaped[0] != '\0' ? escaped : "/")); } else { /* ** If empty tail, gives absolute ref below. */ relative = (char*)malloc(strlen(tail) + strlen(escaped)+2); if (relative == NULL) outofmem(__FILE__, "HTDirEntry"); sprintf(relative, "%s%s%s", tail, (*escaped != '\0' ? "/" : ""), escaped); HTStartAnchor(target, NULL, relative); FREE(relative); } FREE(escaped); } /* Output parent directory entry. ** ------------------------------ ** ** This gives the TITLE and H1 header, and also a link ** to the parent directory if appropriate. ** ** On exit: ** Returns TRUE if an "Up to " link was not created ** for a readable local directory because LONG_LIST is defined ** and NO_PARENT_DIR_REFERENCE is not defined, such that the ** calling function use LYListFmtParse() to create a link to ** the parent directory. Otherwise, it returns FALSE. - FM */ PUBLIC BOOL HTDirTitles ARGS3( HTStructured *, target, HTAnchor *, anchor, BOOL, tildeIsTop) { char * logical = HTAnchor_address(anchor); char * path = HTParse(logical, "", PARSE_PATH + PARSE_PUNCTUATION); char * current; char * cp = NULL; BOOL need_parent_link = FALSE; int i; #ifdef DOSPATH BOOL local_link = FALSE; if (logical[18] == ':') local_link = TRUE; #endif /* ** Check tildeIsTop for treating home directory as Welcome ** (assume the tilde is not followed by a username). - FM */ if (tildeIsTop && !strncmp(path, "/~", 2)) { if (path[2] == '\0') { path[1] = '\0'; } else { for (i = 0; path[(i + 2)]; i++) { path[i] = path[(i + 2)]; } path[i] = '\0'; } } /* ** Trim out the ;type= parameter, if present. - FM */ if ((cp = strrchr(path, ';')) != NULL) { if (!strncasecomp((cp+1), "type=", 5)) { if (TOUPPER(*(cp+6)) == 'D' || TOUPPER(*(cp+6)) == 'A' || TOUPPER(*(cp+6)) == 'I') *cp = '\0'; } cp = NULL; } current = strrchr(path, '/'); /* last part or "" */ { char * printable = NULL; #ifdef DIRED_SUPPORT printable = HTfullURL_toFile( (0 == strncasecomp(path, "/%2F", 4)) /* "//" ? */ ? (path+1) : path); if (0 == strncasecomp(printable, "/vmsysu:", 8) || 0 == strncasecomp(printable, "/anonymou.", 10)) { StrAllocCopy(cp, (printable+1)); StrAllocCopy(printable, cp); FREE(cp); } #else StrAllocCopy(printable, (current ? current + 1 : "")); HTUnEscape(printable); #endif /* DIRED_SUPPORT */ START(HTML_HEAD); PUTS("\n"); START(HTML_TITLE); PUTS(*printable ? printable : gettext("Welcome")); PUTS(gettext(" directory")); END(HTML_TITLE); PUTS("\n"); END(HTML_HEAD); PUTS("\n"); #ifdef DIRED_SUPPORT START(HTML_H2); PUTS(*printable ? gettext("Current directory is ") : ""); PUTS(*printable ? printable : gettext("Welcome")); END(HTML_H2); PUTS("\n"); #else START(HTML_H1); PUTS(*printable ? printable : gettext("Welcome")); END(HTML_H1); PUTS("\n"); #endif /* DIRED_SUPPORT */ if (((0 == strncasecomp(printable, "vmsysu:", 7)) && (cp = strchr(printable, '.')) != NULL && strchr(cp, '/') == NULL) || (0 == strncasecomp(printable, "anonymou.", 9) && strchr(printable, '/') == NULL)) { FREE(printable); FREE(logical); FREE(path); return(need_parent_link); } FREE(printable); } #ifndef NO_PARENT_DIR_REFERENCE /* ** Make link back to parent directory. */ if (current && current[1]) { /* was a slash AND something else too */ char * parent = NULL; char * relative = NULL; *current++ = '\0'; parent = strrchr(path, '/'); /* penultimate slash */ if ((parent && (!strcmp(parent, "/..") || !strncasecomp(parent, "/%2F", 4))) || !strncasecomp(current, "%2F", 3)) { FREE(logical); FREE(path); return(need_parent_link); } relative = (char*) malloc(strlen(current) + 4); if (relative == NULL) outofmem(__FILE__, "HTDirTitles"); sprintf(relative, "%s/..", current); #ifdef DOSPATH if (local_link) if (strlen(parent) == 3 ) StrAllocCat(relative, "/."); #endif #if !defined (VMS) #ifdef DOSPATH if(!local_link) #endif { /* ** On Unix, if it's not ftp and the directory cannot ** be read, don't put out a link. ** ** On VMS, this problem is dealt with internally by ** HTVMSBrowseDir(). */ DIR * dp = NULL; if (LYisLocalFile(logical)) { /* ** We need an absolute file path for the opendir. ** We also need to unescape for this test. ** Don't worry about %2F now, they presumably have been ** dealt with above, and shouldn't appear for local ** files anyway... Assume OS / filesystem will just ** ignore superfluous slashes. - KW */ char * fullparentpath = NULL; /* ** Path has been shortened above. */ StrAllocCopy(fullparentpath, *path ? path : "/"); /* ** Guard against weirdness. */ if (0 == strcmp(current,"..")) { StrAllocCat(fullparentpath,"/../.."); } else if (0 == strcmp(current,".")) { StrAllocCat(fullparentpath,"/.."); } HTUnEscape(fullparentpath); if ((dp = opendir(fullparentpath)) == NULL) { FREE(fullparentpath); FREE(logical); FREE(relative); FREE(path); return(need_parent_link); } closedir(dp); FREE(fullparentpath); #ifdef LONG_LIST need_parent_link = TRUE; FREE(logical); FREE(path); FREE(relative); return(need_parent_link); #endif /* LONG_LIST */ } } #endif /* !VMS */ HTStartAnchor(target, "", relative); FREE(relative); PUTS(gettext("Up to ")); if (parent) { if ((0 == strcmp(current,".")) || (0 == strcmp(current,".."))) { /* ** Should not happen, but if it does, ** at least avoid giving misleading info. - KW */ PUTS(".."); } else { char * printable = NULL; StrAllocCopy(printable, parent + 1); HTUnEscape(printable); PUTS(printable); FREE(printable); } } else { PUTS("/"); } END(HTML_A); } #endif /* !NO_PARENT_DIR_REFERENCE */ FREE(logical); FREE(path); return(need_parent_link); } /* Load a document. ** ---------------- ** ** On entry: ** addr must point to the fully qualified hypertext reference. ** This is the physical address of the file ** ** On exit: ** returns <0 Error has occurred. ** HTLOADED OK ** */ PUBLIC int HTLoadFile ARGS4( CONST char *, addr, HTParentAnchor *, anchor, HTFormat, format_out, HTStream *, sink) { char * filename = NULL; char * acc_method = NULL; HTFormat format; char * nodename = NULL; char * newname = NULL; /* Simplified name of file */ HTAtom * encoding; /* @@ not used yet */ HTAtom * myEncoding = NULL; /* enc of this file, may be gzip etc. */ int status; #ifdef VMS struct stat stat_info; #endif /* VMS */ #ifdef USE_ZLIB gzFile gzfp = 0; BOOL use_gzread = NO; #endif /* USE_ZLIB */ /* ** Reduce the filename to a basic form (hopefully unique!). */ StrAllocCopy(newname, addr); filename=HTParse(newname, "", PARSE_PATH|PARSE_PUNCTUATION); nodename=HTParse(newname, "", PARSE_HOST); /* ** If access is ftp, or file is on another host, invoke ftp now. */ acc_method = HTParse(newname, "", PARSE_ACCESS); if (strcmp("ftp", acc_method) == 0 || (strcmp("localhost", nodename) != 0 && #ifdef VMS strcasecomp(nodename, HTHostName()) != 0 #else strcmp(nodename, HTHostName()) != 0 #endif /* VMS */ )) { FREE(newname); FREE(filename); FREE(nodename); FREE(acc_method); return HTFTPLoad(addr, anchor, format_out, sink); } else { FREE(newname); FREE(acc_method); } #ifdef VMS HTUnEscape(filename); #endif /* VMS */ /* ** Determine the format and encoding mapped to any suffix. */ if (anchor->content_type && anchor->content_encoding) { /* * If content_type and content_encoding are BOTH already set * in the anchor object, we believe it and don't try to * derive format and encoding from the filename. - kw */ format = HTAtom_for(anchor->content_type); myEncoding = HTAtom_for(anchor->content_encoding); } else { format = HTFileFormat(filename, &myEncoding, NULL); /* ** Check the format for an extended MIME charset value, and ** act on it if present. Otherwise, assume what is indicated ** by the last parameter (fallback will effectively be ** UCLYhndl_for_unspec, by default ISO-8859-1). - kw */ format = HTCharsetFormat(format, anchor, UCLYhndl_HTFile_for_unspec); } #ifdef VMS /* ** Check to see if the 'filename' is in fact a directory. If it is ** create a new hypertext object containing a list of files and ** subdirectories contained in the directory. All of these are links ** to the directories or files listed. */ if (HTStat(filename, &stat_info) == -1) { CTRACE(tfp, "HTLoadFile: Can't stat %s\n", filename); } else { if (S_ISDIR(stat_info.st_mode)) { if (HTDirAccess == HT_DIR_FORBID) { FREE(filename); FREE(nodename); return HTLoadError(sink, 403, gettext("Directory browsing is not allowed.")); } if (HTDirAccess == HT_DIR_SELECTIVE) { char * enable_file_name = malloc(strlen(filename)+ 1 + strlen(HT_DIR_ENABLE_FILE) + 1); if (enable_file_name == NULL) outofmem(__FILE__, "HTLoadFile"); strcpy(enable_file_name, filename); strcat(enable_file_name, "/"); strcat(enable_file_name, HT_DIR_ENABLE_FILE); if (HTStat(enable_file_name, &stat_info) == -1) { FREE(filename); FREE(nodename); return HTLoadError(sink, 403, gettext("Selective access is not enabled for this directory")); } } FREE(filename); FREE(nodename); return HTVMSBrowseDir(addr, anchor, format_out, sink); } } /* ** Assume that the file is in Unix-style syntax if it contains a '/' ** after the leading one. @@ */ { FILE * fp; char * vmsname = strchr(filename + 1, '/') ? HTVMS_name(nodename, filename) : filename + 1; fp = fopen(vmsname, "r", "shr=put", "shr=upd"); /* ** If the file wasn't VMS syntax, then perhaps it is Ultrix. */ if (!fp) { char * ultrixname = 0; CTRACE(tfp, "HTLoadFile: Can't open as %s\n", vmsname); HTSprintf0(&ultrixname, "%s::\"%s\"", nodename, filename); fp = fopen(ultrixname, "r", "shr=put", "shr=upd"); if (!fp) { CTRACE(tfp, "HTLoadFile: Can't open as %s\n", ultrixname); } FREE(ultrixname); } if (fp) { int len; char *cp = NULL; char *semicolon = NULL; if (HTEditable(vmsname)) { HTAtom * put = HTAtom_for("PUT"); HTList * methods = HTAnchor_methods(anchor); if (HTList_indexOf(methods, put) == (-1)) { HTList_addObject(methods, put); } } /* ** Trim vmsname at semicolon if a version number was ** included, so it doesn't interfere with the check ** for a compressed file. - FM */ if ((semicolon = strchr(vmsname, ';')) != NULL) *semicolon = '\0'; /* ** Fake a Content-Encoding for compressed files. - FM */ if (!IsUnityEnc(myEncoding)) { /* * We already know from the call to HTFileFormat above * that this is a compressed file, no need to look at * the filename again. - kw */ #ifdef USE_ZLIB if (strcmp(format_out->name, "www/download") != 0 && (!strcmp(HTAtom_name(myEncoding), "gzip") || !strcmp(HTAtom_name(myEncoding), "x-gzip"))) { fclose(fp); if (semicolon != NULL) *semicolon = ';'; gzfp = gzopen(vmsname, "rb"); CTRACE(tfp, "HTLoadFile: gzopen of `%s' gives %p\n", vmsname, (void*)gzfp); use_gzread = YES; } else #endif /* USE_ZLIB */ { StrAllocCopy(anchor->content_type, format->name); StrAllocCopy(anchor->content_encoding, HTAtom_name(myEncoding)); format = HTAtom_for("www/compressed"); } } else if ((len = strlen(vmsname)) > 2) { if ((vmsname[len - 1] == 'Z') && (vmsname[len - 2] == '.' || vmsname[len - 2] == '-' || vmsname[len - 2] == '_') && vmsname[len - 3] != ']' && vmsname[len - 3] != ':') { StrAllocCopy(cp, vmsname); cp[len - 2] = '\0'; format = HTFileFormat(cp, &encoding, NULL); FREE(cp); format = HTCharsetFormat(format, anchor, UCLYhndl_HTFile_for_unspec); StrAllocCopy(anchor->content_type, format->name); StrAllocCopy(anchor->content_encoding, "x-compress"); format = HTAtom_for("www/compressed"); } else if ((len > 3) && !strcasecomp((char *)&vmsname[len - 2], "gz")) { if (vmsname[len - 3] == '.' || vmsname[len - 3] == '-' || vmsname[len - 3] == '_') { StrAllocCopy(cp, vmsname); cp[len - 3] = '\0'; format = HTFileFormat(cp, &encoding, NULL); FREE(cp); format = HTCharsetFormat(format, anchor, UCLYhndl_HTFile_for_unspec); StrAllocCopy(anchor->content_type, format->name); StrAllocCopy(anchor->content_encoding, "x-gzip"); #ifdef USE_ZLIB if (strcmp(format_out->name, "www/download") != 0) { fclose(fp); if (semicolon != NULL) *semicolon = ';'; gzfp = gzopen(vmsname, "rb"); CTRACE(tfp, "HTLoadFile: gzopen of `%s' gives %p\n", vmsname, (void*)gzfp); use_gzread = YES; } #else /* USE_ZLIB */ format = HTAtom_for("www/compressed"); #endif /* USE_ZLIB */ } } } if (semicolon != NULL) *semicolon = ';'; FREE(filename); FREE(nodename); #ifdef USE_ZLIB if (use_gzread) { if (gzfp) { char * sugfname = NULL; if (anchor->SugFname) { StrAllocCopy(sugfname, anchor->SugFname); } else { char * anchor_path = HTParse(anchor->address, "", PARSE_PATH + PARSE_PUNCTUATION); char * lastslash; HTUnEscape(anchor_path); lastslash = strrchr(anchor_path, '/'); if (lastslash) StrAllocCopy(sugfname, lastslash + 1); FREE(anchor_path); } FREE(anchor->content_encoding); if (sugfname && *sugfname) HTCheckFnameForCompression(&sugfname, anchor, TRUE); if (sugfname && *sugfname) StrAllocCopy(anchor->SugFname, sugfname); FREE(sugfname); status = HTParseGzFile(format, format_out, anchor, gzfp, sink); } else { status = HTLoadError(NULL, -(HT_ERROR), gettext("Could not open file for decompression!")); } } else #endif /* USE_ZLIB */ { status = HTParseFile(format, format_out, anchor, fp, sink); fclose(fp); } return status; } /* If successful open */ FREE(filename); } #else /* Unix: */ FREE(filename); /* ** For unix, we try to translate the name into the name of a ** transparently mounted file. ** ** Not allowed in secure (HTClienntHost) situations. TBL 921019 */ #ifndef NO_UNIX_IO /* Need protection here for telnet server but not httpd server. */ if (!HTSecure) { /* try local file system */ char * localname = HTLocalName(addr); struct stat dir_info; #ifdef HAVE_READDIR /* ** Multiformat handling. ** ** If needed, scan directory to find a good file. ** Bug: We don't stat the file to find the length. */ if ((strlen(localname) > strlen(MULTI_SUFFIX)) && (0 == strcmp(localname + strlen(localname) - strlen(MULTI_SUFFIX), MULTI_SUFFIX))) { DIR *dp = 0; BOOL forget_multi = NO; STRUCT_DIRENT * dirbuf; float best = NO_VALUE_FOUND; /* So far best is bad */ HTFormat best_rep = NULL; /* Set when rep found */ HTAtom * best_enc = NULL; char * best_name = NULL; /* Best dir entry so far */ char *base = strrchr(localname, '/'); int baselen = 0; if (!base || base == localname) { forget_multi = YES; } else { *base++ = '\0'; /* Just got directory name */ baselen = strlen(base)- strlen(MULTI_SUFFIX); base[baselen] = '\0'; /* Chop off suffix */ dp = opendir(localname); } if (forget_multi || !dp) { FREE(localname); FREE(nodename); return HTLoadError(sink, 500, gettext("Multiformat: directory scan failed.")); } while ((dirbuf = readdir(dp)) != NULL) { /* ** While there are directory entries to be read... */ #ifndef DOSPATH if (dirbuf->d_ino == 0) continue; /* if the entry is not being used, skip it */ #endif if ((int)strlen(dirbuf->d_name) > baselen && /* Match? */ !strncmp(dirbuf->d_name, base, baselen)) { HTAtom * enc; HTFormat rep = HTFileFormat(dirbuf->d_name, &enc, NULL); float filevalue = HTFileValue(dirbuf->d_name); float value = HTStackValue(rep, format_out, filevalue, 0L /* @@@@@@ */); if (value <= 0.0) { char * cp = NULL; int len = strlen(dirbuf->d_name); enc = NULL; if (len > 2 && dirbuf->d_name[len - 1] == 'Z' && dirbuf->d_name[len - 2] == '.') { StrAllocCopy(cp, dirbuf->d_name); cp[len - 2] = '\0'; format = HTFileFormat(cp, NULL, NULL); FREE(cp); value = HTStackValue(format, format_out, filevalue, 0); if (value <= 0.0) { format = HTAtom_for("application/x-compressed"); value = HTStackValue(format, format_out, filevalue, 0); } if (value <= 0.0) { format = HTAtom_for("www/compressed"); value = HTStackValue(format, format_out, filevalue, 0); } } else if ((len > 3) && !strcasecomp((char *)&dirbuf->d_name[len - 2], "gz") && dirbuf->d_name[len - 3] == '.') { StrAllocCopy(cp, dirbuf->d_name); cp[len - 3] = '\0'; format = HTFileFormat(cp, NULL, NULL); FREE(cp); value = HTStackValue(format, format_out, filevalue, 0); if (value <= 0.0) { format = HTAtom_for("application/x-gzip"); value = HTStackValue(format, format_out, filevalue, 0); } if (value <= 0.0) { format = HTAtom_for("www/compressed"); value = HTStackValue(format, format_out, filevalue, 0); } } } if (value != NO_VALUE_FOUND) { CTRACE(tfp, "HTLoadFile: value of presenting %s is %f\n", HTAtom_name(rep), value); if (value > best) { best_rep = rep; best_enc = enc; best = value; StrAllocCopy(best_name, dirbuf->d_name); } } /* if best so far */ } /* if match */ } /* end while directory entries left to read */ closedir(dp); if (best_rep) { format = best_rep; myEncoding = best_enc; base[-1] = '/'; /* Restore directory name */ base[0] = '\0'; StrAllocCat(localname, best_name); FREE(best_name); } else { /* If not found suitable file */ FREE(localname); FREE(nodename); return HTLoadError(sink, 403, /* List formats? */ gettext("Could not find suitable representation for transmission.")); } /*NOTREACHED*/ } /* if multi suffix */ /* ** Check to see if the 'localname' is in fact a directory. If it ** is create a new hypertext object containing a list of files and ** subdirectories contained in the directory. All of these are ** links to the directories or files listed. ** NB This assumes the existence of a type 'STRUCT_DIRENT', which ** will hold the directory entry, and a type 'DIR' which is used ** to point to the current directory being read. */ #ifdef _WINDOWS if (!exists(localname)) #else if (stat(localname,&dir_info) == -1) /* get file information */ #endif { /* if can't read file information */ CTRACE(tfp, "HTLoadFile: can't stat %s\n", localname); } else { /* Stat was OK */ #ifdef _WINDOWS if (stat(localname,&dir_info) == -1) dir_info.st_mode = S_IFDIR; #endif if (S_ISDIR(dir_info.st_mode)) { /* ** If localname is a directory. */ HTStructured *target; /* HTML object */ HTStructuredClass targetClass; DIR *dp; STRUCT_DIRENT * dirbuf; char *logical = NULL; char *pathname = NULL; char *tail = NULL; BOOL present[HTML_A_ATTRIBUTES]; char * tmpfilename = NULL; BOOL need_parent_link = FALSE; struct stat file_info; CTRACE(tfp, "%s is a directory\n", localname); /* ** Check directory access. ** Selective access means only those directories containing ** a marker file can be browsed. */ if (HTDirAccess == HT_DIR_FORBID) { FREE(localname); FREE(nodename); return HTLoadError(sink, 403, gettext("Directory browsing is not allowed.")); } if (HTDirAccess == HT_DIR_SELECTIVE) { char * enable_file_name = malloc(strlen(localname)+ 1 + strlen(HT_DIR_ENABLE_FILE) + 1); if (enable_file_name == NULL) outofmem(__FILE__, "HTLoadFile"); strcpy(enable_file_name, localname); strcat(enable_file_name, "/"); strcat(enable_file_name, HT_DIR_ENABLE_FILE); if (stat(enable_file_name, &file_info) != 0) { FREE(localname); FREE(nodename); return HTLoadError(sink, 403, gettext("Selective access is not enabled for this directory")); } } dp = opendir(localname); if (!dp) { FREE(localname); FREE(nodename); return HTLoadError(sink, 403, gettext("This directory is not readable.")); } /* ** Directory access is allowed and possible. */ logical = HTAnchor_address((HTAnchor*)anchor); pathname = HTParse(logical, "", PARSE_PATH + PARSE_PUNCTUATION); if (!strcmp(pathname,"/")) { /* ** Root path. */ StrAllocCopy (tail, "/foo/.."); } else { char *p = strrchr(pathname, '/'); /* find last slash */ if (!p) { /* ** This probably should not happen, ** but be prepared if it does. - KW */ StrAllocCopy (tail, "/foo/.."); } else { /* ** Take slash off the beginning. */ StrAllocCopy(tail, (p + 1)); } } FREE(pathname); if (UCLYhndl_HTFile_for_unspec >= 0) { HTAnchor_setUCInfoStage(anchor, UCLYhndl_HTFile_for_unspec, UCT_STAGE_PARSER, UCT_SETBY_DEFAULT); } target = HTML_new(anchor, format_out, sink); targetClass = *target->isa; /* Copy routine entry points */ { int i; for (i = 0; i < HTML_A_ATTRIBUTES; i++) present[i] = (i == HTML_A_HREF); } /* ** The need_parent_link flag will be set if an ** "Up to " link was not created for a ** readable parent in HTDirTitles() because ** LONG_LIST is defined and NO_PARENT_DIR_REFERENCE ** is not defined so that need we to create the ** link via an LYListFmtParse() call. - FM */ need_parent_link = HTDirTitles(target, (HTAnchor *)anchor, FALSE); #ifdef DIRED_SUPPORT if (strncmp(anchor->address, "lynxcgi:", 8)) { HTAnchor_setFormat((HTParentAnchor *) anchor, WWW_DIRED); lynx_edit_mode = TRUE; } #endif /* DIRED_SUPPORT */ if (HTDirReadme == HT_DIR_README_TOP) do_readme(target, localname); { HTBTree * bt = HTBTree_new((HTComparer)strcmp); status = HT_LOADED; /* assume we don't get interrupted */ while ((dirbuf = readdir(dp)) != NULL) { /* ** While there are directory entries to be read... */ char * dirname = NULL; #ifndef DOSPATH if (dirbuf->d_ino == 0) /* ** If the entry is not being used, skip it. */ continue; #endif /* ** Skip self, parent if handled in HTDirTitles() ** or if NO_PARENT_DIR_REFERENCE is not defined, ** and any dot files if no_dotfiles is set or ** show_dotfiles is not set. - FM */ if (!strcmp(dirbuf->d_name, ".") /* self */ || (!strcmp(dirbuf->d_name, "..") /* parent */ && need_parent_link == FALSE) || ((strcmp(dirbuf->d_name, "..")) && (dirbuf->d_name[0] == '.' && (no_dotfiles || !show_dotfiles)))) continue; dirname = (char *)malloc(strlen(dirbuf->d_name) + 4); if (dirname == NULL) outofmem(__FILE__, "HTLoadFile"); StrAllocCopy(tmpfilename, localname); if (strcmp(localname, "/")) /* ** If filename is not root directory. */ StrAllocCat(tmpfilename, "/"); StrAllocCat(tmpfilename, dirbuf->d_name); stat(tmpfilename, &file_info); if (S_ISDIR(file_info.st_mode)) #ifndef DIRED_SUPPORT sprintf((char *)dirname, "D%s",dirbuf->d_name); else sprintf((char *)dirname, "F%s",dirbuf->d_name); /* D & F to have first directories, then files */ #else { if (dir_list_style == MIXED_STYLE) sprintf((char *)dirname, " %s/", dirbuf->d_name); else if (!strcmp(dirbuf->d_name, "..")) sprintf((char *)dirname, "A%s", dirbuf->d_name); else sprintf((char *)dirname, "D%s", dirbuf->d_name); } else if (dir_list_style == MIXED_STYLE) sprintf((char *)dirname, " %s", dirbuf->d_name); else if (dir_list_style == FILES_FIRST) sprintf((char *)dirname, "C%s", dirbuf->d_name); /* C & D to have first files, then directories */ else sprintf((char *)dirname, "F%s", dirbuf->d_name); #endif /* !DIRED_SUPPORT */ /* ** Sort dirname in the tree bt. */ HTBTree_add(bt, dirname); } /* ** Run through tree printing out in order. */ { HTBTElement * next_element = HTBTree_next(bt,NULL); /* pick up the first element of the list */ char state; /* I for initial (.. file), D for directory file, F for file */ #ifdef DIRED_SUPPORT char test; #endif /* DIRED_SUPPORT */ state = 'I'; while (next_element != NULL) { char *entry, *file_extra; if (HTCheckForInterrupt()) { _HTProgress ("Data transfer interrupted."); status = HT_PARTIAL_CONTENT; break; } StrAllocCopy(tmpfilename,localname); if (strcmp(localname, "/")) /* ** If filename is not root directory. */ StrAllocCat(tmpfilename, "/"); StrAllocCat(tmpfilename, (char *)HTBTree_object(next_element)+1); /* ** Append the current entry's filename ** to the path. */ HTSimplify(tmpfilename); /* ** Output the directory entry. */ if (strcmp((char *) (HTBTree_object(next_element)), "D..") && strcmp((char *) (HTBTree_object(next_element)), "A..")) { #ifdef DIRED_SUPPORT test = (*(char *)(HTBTree_object(next_element)) == 'D' ? 'D' : 'F'); if (state != test) { #ifndef LONG_LIST if (dir_list_style == FILES_FIRST) { if (state == 'F') END(HTML_DIR); } else if (dir_list_style != MIXED_STYLE) if (state == 'D') END(HTML_DIR); #endif /* !LONG_LIST */ state = (*(char *)(HTBTree_object(next_element)) == 'D' ? 'D' : 'F'); START(HTML_H2); if (dir_list_style != MIXED_STYLE) { START(HTML_EM); PUTS(state == 'D' ? gettext("Subdirectories:") : gettext("Files:")); END(HTML_EM); } END(HTML_H2); #ifndef LONG_LIST START(HTML_DIR); #endif /* !LONG_LIST */ } #else if (state != *(char *)(HTBTree_object( next_element))) { #ifndef LONG_LIST if (state == 'D') END(HTML_DIR); #endif /* !LONG_LIST */ state = (*(char *)(HTBTree_object(next_element)) == 'D' ? 'D' : 'F'); START(HTML_H2); START(HTML_EM); PUTS(state == 'D' ? gettext("Subdirectories:") : gettext("Files:")); END(HTML_EM); END(HTML_H2); #ifndef LONG_LIST START(HTML_DIR); #endif /* !LONG_LIST */ } #endif /* DIRED_SUPPORT */ #ifndef LONG_LIST START(HTML_LI); #endif /* !LONG_LIST */ } entry = (char*)HTBTree_object(next_element)+1; file_extra = NULL; #ifdef LONG_LIST LYListFmtParse(list_format, tmpfilename, target, entry, tail); #else HTDirEntry(target, tail, entry); PUTS(entry); END(HTML_A); if (file_extra) { PUTS(file_extra); FREE(file_extra); } MAYBE_END(HTML_LI); #endif /* LONG_LIST */ next_element = HTBTree_next(bt, next_element); /* pick up the next element of the list; if none, return NULL*/ } if (status == HT_LOADED) { if (state == 'I') { START(HTML_P); PUTS("Empty Directory"); } #ifndef LONG_LIST else END(HTML_DIR); #endif /* !LONG_LIST */ } } /* end while directory entries left to read */ closedir(dp); FREE(logical); FREE(tmpfilename); FREE(tail); HTBTreeAndObject_free(bt); if (status == HT_LOADED) { if (HTDirReadme == HT_DIR_README_BOTTOM) do_readme(target, localname); FREE_TARGET; } else { ABORT_TARGET; } FREE(localname); FREE(nodename); return status; /* document loaded, maybe partial */ } } /* end if localname is directory */ } /* end if file stat worked */ /* End of directory reading section */ #endif /* HAVE_READDIR */ { # ifdef __EMX__ int len = strlen(localname); int bin = ((len > 3) && !strcasecomp(localname + len - 3, ".gz")); FILE * fp = fopen(localname, (bin ? "rb" : "r")); # else /* !( defined __EMX__ ) */ FILE * fp = fopen(localname, "r"); # endif CTRACE (tfp, "HTLoadFile: Opening `%s' gives %p\n", localname, (void*)fp); if (fp) { /* Good! */ int len; char *cp = NULL; if (HTEditable(localname)) { HTAtom * put = HTAtom_for("PUT"); HTList * methods = HTAnchor_methods(anchor); if (HTList_indexOf(methods, put) == (-1)) { HTList_addObject(methods, put); } } /* ** Fake a Content-Encoding for compressed files. - FM */ if (!IsUnityEnc(myEncoding)) { /* * We already know from the call to HTFileFormat above * that this is a compressed file, no need to look at * the filename again. - kw */ #ifdef USE_ZLIB if (strcmp(format_out->name, "www/download") != 0 && (!strcmp(HTAtom_name(myEncoding), "gzip") || !strcmp(HTAtom_name(myEncoding), "x-gzip"))) { fclose(fp); gzfp = gzopen(localname, "rb"); CTRACE(tfp, "HTLoadFile: gzopen of `%s' gives %p\n", localname, (void*)gzfp); use_gzread = YES; } else #endif /* USE_ZLIB */ { StrAllocCopy(anchor->content_type, format->name); StrAllocCopy(anchor->content_encoding, HTAtom_name(myEncoding)); format = HTAtom_for("www/compressed"); } } else if ((len = strlen(localname)) > 2) { if (localname[len - 1] == 'Z' && localname[len - 2] == '.') { StrAllocCopy(cp, localname); cp[len - 2] = '\0'; format = HTFileFormat(cp, &encoding, NULL); FREE(cp); format = HTCharsetFormat(format, anchor, UCLYhndl_HTFile_for_unspec); StrAllocCopy(anchor->content_type, format->name); StrAllocCopy(anchor->content_encoding, "x-compress"); format = HTAtom_for("www/compressed"); } else if ((len > 3) && !strcasecomp((char *)&localname[len - 2], "gz") && localname[len - 3] == '.') { StrAllocCopy(cp, localname); cp[len - 3] = '\0'; format = HTFileFormat(cp, &encoding, NULL); FREE(cp); format = HTCharsetFormat(format, anchor, UCLYhndl_HTFile_for_unspec); StrAllocCopy(anchor->content_type, format->name); StrAllocCopy(anchor->content_encoding, "x-gzip"); #ifdef USE_ZLIB if (strcmp(format_out->name, "www/download") != 0) { fclose(fp); gzfp = gzopen(localname, "rb"); CTRACE(tfp, "HTLoadFile: gzopen of `%s' gives %p\n", localname, (void*)gzfp); use_gzread = YES; } #else /* USE_ZLIB */ format = HTAtom_for("www/compressed"); #endif /* USE_ZLIB */ } } FREE(localname); FREE(nodename); #ifdef USE_ZLIB if (use_gzread) { if (gzfp) { char * sugfname = NULL; if (anchor->SugFname) { StrAllocCopy(sugfname, anchor->SugFname); } else { char * anchor_path = HTParse(anchor->address, "", PARSE_PATH + PARSE_PUNCTUATION); char * lastslash; HTUnEscape(anchor_path); lastslash = strrchr(anchor_path, '/'); if (lastslash) StrAllocCopy(sugfname, lastslash + 1); FREE(anchor_path); } FREE(anchor->content_encoding); if (sugfname && *sugfname) HTCheckFnameForCompression(&sugfname, anchor, TRUE); if (sugfname && *sugfname) StrAllocCopy(anchor->SugFname, sugfname); FREE(sugfname); status = HTParseGzFile(format, format_out, anchor, gzfp, sink); } else { status = HTLoadError(NULL, -(HT_ERROR), gettext("Could not open file for decompression!")); } } else #endif /* USE_ZLIB */ { status = HTParseFile(format, format_out, anchor, fp, sink); fclose(fp); } return status; } /* If successful open */ FREE(localname); } /* scope of fp */ } /* local unix file system */ #endif /* !NO_UNIX_IO */ #endif /* VMS */ #ifndef DECNET /* ** Now, as transparently mounted access has failed, we try FTP. */ { /* ** Deal with case-sensitivity differences on VMS versus Unix. */ #ifdef VMS if (strcasecomp(nodename, HTHostName()) != 0) #else if (strcmp(nodename, HTHostName()) != 0) #endif /* VMS */ { FREE(nodename); if (!strncmp(addr, "file://localhost", 16)) { return -1; /* never go to ftp site when URL * is file://localhost */ } else { return HTFTPLoad(addr, anchor, format_out, sink); } } FREE(nodename); } #endif /* !DECNET */ /* ** All attempts have failed. */ { CTRACE(tfp, "Can't open `%s', errno=%d\n", addr, SOCKET_ERRNO); return HTLoadError(sink, 403, gettext("Can't access requested file.")); } } /* ** Protocol descriptors */ #ifdef GLOBALDEF_IS_MACRO #define _HTFILE_C_1_INIT { "ftp", HTLoadFile, 0 } GLOBALDEF (HTProtocol,HTFTP,_HTFILE_C_1_INIT); #define _HTFILE_C_2_INIT { "file", HTLoadFile, HTFileSaveStream } GLOBALDEF (HTProtocol,HTFile,_HTFILE_C_2_INIT); #else GLOBALDEF PUBLIC HTProtocol HTFTP = { "ftp", HTLoadFile, 0 }; GLOBALDEF PUBLIC HTProtocol HTFile = { "file", HTLoadFile, HTFileSaveStream }; #endif /* GLOBALDEF_IS_MACRO */