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diff --git a/rubbos/app/httpd-2.0.64/server/util.c b/rubbos/app/httpd-2.0.64/server/util.c
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * util.c: string utility things
+ *
+ * 3/21/93 Rob McCool
+ * 1995-96 Many changes by the Apache Software Foundation
+ *
+ */
+
+/* Debugging aid:
+ * #define DEBUG to trace all cfg_open*()/cfg_closefile() calls
+ * #define DEBUG_CFG_LINES to trace every line read from the config files
+ */
+
+#include "apr.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+
+#define APR_WANT_STDIO
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_NETDB_H
+#include <netdb.h> /* for gethostbyname() */
+#endif
+
+#define CORE_PRIVATE
+
+#include "ap_config.h"
+#include "apr_base64.h"
+#include "httpd.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "http_protocol.h"
+#include "http_config.h"
+#include "util_ebcdic.h"
+
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif
+#ifdef HAVE_GRP_H
+#include <grp.h>
+#endif
+
+/* A bunch of functions in util.c scan strings looking for certain characters.
+ * To make that more efficient we encode a lookup table. The test_char_table
+ * is generated automatically by gen_test_char.c.
+ */
+#include "test_char.h"
+
+/* we assume the folks using this ensure 0 <= c < 256... which means
+ * you need a cast to (unsigned char) first, you can't just plug a
+ * char in here and get it to work, because if char is signed then it
+ * will first be sign extended.
+ */
+#define TEST_CHAR(c, f) (test_char_table[(unsigned)(c)] & (f))
+
+/* Win32/NetWare/OS2 need to check for both forward and back slashes
+ * in ap_getparents() and ap_escape_url.
+ */
+#ifdef CASE_BLIND_FILESYSTEM
+#define IS_SLASH(s) ((s == '/') || (s == '\\'))
+#else
+#define IS_SLASH(s) (s == '/')
+#endif
+
+
+/*
+ * Examine a field value (such as a media-/content-type) string and return
+ * it sans any parameters; e.g., strip off any ';charset=foo' and the like.
+ */
+AP_DECLARE(char *) ap_field_noparam(apr_pool_t *p, const char *intype)
+{
+ const char *semi;
+
+ if (intype == NULL) return NULL;
+
+ semi = ap_strchr_c(intype, ';');
+ if (semi == NULL) {
+ return apr_pstrdup(p, intype);
+ }
+ else {
+ while ((semi > intype) && apr_isspace(semi[-1])) {
+ semi--;
+ }
+ return apr_pstrndup(p, intype, semi - intype);
+ }
+}
+
+AP_DECLARE(char *) ap_ht_time(apr_pool_t *p, apr_time_t t, const char *fmt,
+ int gmt)
+{
+ apr_size_t retcode;
+ char ts[MAX_STRING_LEN];
+ char tf[MAX_STRING_LEN];
+ apr_time_exp_t xt;
+
+ if (gmt) {
+ const char *f;
+ char *strp;
+
+ apr_time_exp_gmt(&xt, t);
+ /* Convert %Z to "GMT" and %z to "+0000";
+ * on hosts that do not have a time zone string in struct tm,
+ * strftime must assume its argument is local time.
+ */
+ for(strp = tf, f = fmt; strp < tf + sizeof(tf) - 6 && (*strp = *f)
+ ; f++, strp++) {
+ if (*f != '%') continue;
+ switch (f[1]) {
+ case '%':
+ *++strp = *++f;
+ break;
+ case 'Z':
+ *strp++ = 'G';
+ *strp++ = 'M';
+ *strp = 'T';
+ f++;
+ break;
+ case 'z': /* common extension */
+ *strp++ = '+';
+ *strp++ = '0';
+ *strp++ = '0';
+ *strp++ = '0';
+ *strp = '0';
+ f++;
+ break;
+ }
+ }
+ *strp = '\0';
+ fmt = tf;
+ }
+ else {
+ apr_time_exp_lt(&xt, t);
+ }
+
+ /* check return code? */
+ apr_strftime(ts, &retcode, MAX_STRING_LEN, fmt, &xt);
+ ts[MAX_STRING_LEN - 1] = '\0';
+ return apr_pstrdup(p, ts);
+}
+
+/* Roy owes Rob beer. */
+/* Rob owes Roy dinner. */
+
+/* These legacy comments would make a lot more sense if Roy hadn't
+ * replaced the old later_than() routine with util_date.c.
+ *
+ * Well, okay, they still wouldn't make any sense.
+ */
+
+/* Match = 0, NoMatch = 1, Abort = -1
+ * Based loosely on sections of wildmat.c by Rich Salz
+ * Hmmm... shouldn't this really go component by component?
+ */
+AP_DECLARE(int) ap_strcmp_match(const char *str, const char *expected)
+{
+ int x, y;
+
+ for (x = 0, y = 0; expected[y]; ++y, ++x) {
+ if ((!str[x]) && (expected[y] != '*'))
+ return -1;
+ if (expected[y] == '*') {
+ while (expected[++y] == '*');
+ if (!expected[y])
+ return 0;
+ while (str[x]) {
+ int ret;
+ if ((ret = ap_strcmp_match(&str[x++], &expected[y])) != 1)
+ return ret;
+ }
+ return -1;
+ }
+ else if ((expected[y] != '?') && (str[x] != expected[y]))
+ return 1;
+ }
+ return (str[x] != '\0');
+}
+
+AP_DECLARE(int) ap_strcasecmp_match(const char *str, const char *expected)
+{
+ int x, y;
+
+ for (x = 0, y = 0; expected[y]; ++y, ++x) {
+ if (!str[x] && expected[y] != '*')
+ return -1;
+ if (expected[y] == '*') {
+ while (expected[++y] == '*');
+ if (!expected[y])
+ return 0;
+ while (str[x]) {
+ int ret;
+ if ((ret = ap_strcasecmp_match(&str[x++], &expected[y])) != 1)
+ return ret;
+ }
+ return -1;
+ }
+ else if (expected[y] != '?'
+ && apr_tolower(str[x]) != apr_tolower(expected[y]))
+ return 1;
+ }
+ return (str[x] != '\0');
+}
+
+/* We actually compare the canonical root to this root, (but we don't
+ * waste time checking the case), since every use of this function in
+ * httpd-2.0 tests if the path is 'proper', meaning we've already passed
+ * it through apr_filepath_merge, or we haven't.
+ */
+AP_DECLARE(int) ap_os_is_path_absolute(apr_pool_t *p, const char *dir)
+{
+ const char *newpath;
+ const char *ourdir = dir;
+ if (apr_filepath_root(&newpath, &dir, 0, p) != APR_SUCCESS
+ || strncmp(newpath, ourdir, strlen(newpath)) != 0) {
+ return 0;
+ }
+ return 1;
+}
+
+AP_DECLARE(int) ap_is_matchexp(const char *str)
+{
+ register int x;
+
+ for (x = 0; str[x]; x++)
+ if ((str[x] == '*') || (str[x] == '?'))
+ return 1;
+ return 0;
+}
+
+/*
+ * Here's a pool-based interface to POSIX regex's regcomp().
+ * Note that we return regex_t instead of being passed one.
+ * The reason is that if you use an already-used regex_t structure,
+ * the memory that you've already allocated gets forgotten, and
+ * regfree() doesn't clear it. So we don't allow it.
+ */
+
+static apr_status_t regex_cleanup(void *preg)
+{
+ regfree((regex_t *) preg);
+ return APR_SUCCESS;
+}
+
+AP_DECLARE(regex_t *) ap_pregcomp(apr_pool_t *p, const char *pattern,
+ int cflags)
+{
+ regex_t *preg = apr_palloc(p, sizeof(regex_t));
+
+ if (regcomp(preg, pattern, cflags)) {
+ return NULL;
+ }
+
+ apr_pool_cleanup_register(p, (void *) preg, regex_cleanup,
+ apr_pool_cleanup_null);
+
+ return preg;
+}
+
+AP_DECLARE(void) ap_pregfree(apr_pool_t *p, regex_t * reg)
+{
+ regfree(reg);
+ apr_pool_cleanup_kill(p, (void *) reg, regex_cleanup);
+}
+
+/*
+ * Similar to standard strstr() but we ignore case in this version.
+ * Based on the strstr() implementation further below.
+ */
+AP_DECLARE(char *) ap_strcasestr(const char *s1, const char *s2)
+{
+ char *p1, *p2;
+ if (*s2 == '\0') {
+ /* an empty s2 */
+ return((char *)s1);
+ }
+ while(1) {
+ for ( ; (*s1 != '\0') && (apr_tolower(*s1) != apr_tolower(*s2)); s1++);
+ if (*s1 == '\0') {
+ return(NULL);
+ }
+ /* found first character of s2, see if the rest matches */
+ p1 = (char *)s1;
+ p2 = (char *)s2;
+ for (++p1, ++p2; apr_tolower(*p1) == apr_tolower(*p2); ++p1, ++p2) {
+ if (*p1 == '\0') {
+ /* both strings ended together */
+ return((char *)s1);
+ }
+ }
+ if (*p2 == '\0') {
+ /* second string ended, a match */
+ break;
+ }
+ /* didn't find a match here, try starting at next character in s1 */
+ s1++;
+ }
+ return((char *)s1);
+}
+
+/*
+ * Returns an offsetted pointer in bigstring immediately after
+ * prefix. Returns bigstring if bigstring doesn't start with
+ * prefix or if prefix is longer than bigstring while still matching.
+ * NOTE: pointer returned is relative to bigstring, so we
+ * can use standard pointer comparisons in the calling function
+ * (eg: test if ap_stripprefix(a,b) == a)
+ */
+AP_DECLARE(const char *) ap_stripprefix(const char *bigstring,
+ const char *prefix)
+{
+ const char *p1;
+
+ if (*prefix == '\0')
+ return bigstring;
+
+ p1 = bigstring;
+ while (*p1 && *prefix) {
+ if (*p1++ != *prefix++)
+ return bigstring;
+ }
+ if (*prefix == '\0')
+ return p1;
+
+ /* hit the end of bigstring! */
+ return bigstring;
+}
+
+/*
+ * Apache stub function for the regex libraries regexec() to make sure the
+ * whole regex(3) API is available through the Apache (exported) namespace.
+ * This is especially important for the DSO situations of modules.
+ * DO NOT MAKE A MACRO OUT OF THIS FUNCTION!
+ */
+AP_DECLARE(int) ap_regexec(regex_t *preg, const char *string,
+ size_t nmatch, regmatch_t pmatch[], int eflags)
+{
+ return regexec(preg, string, nmatch, pmatch, eflags);
+}
+
+AP_DECLARE(size_t) ap_regerror(int errcode, const regex_t *preg, char *errbuf,
+ size_t errbuf_size)
+{
+ return regerror(errcode, preg, errbuf, errbuf_size);
+}
+
+
+/* This function substitutes for $0-$9, filling in regular expression
+ * submatches. Pass it the same nmatch and pmatch arguments that you
+ * passed ap_regexec(). pmatch should not be greater than the maximum number
+ * of subexpressions - i.e. one more than the re_nsub member of regex_t.
+ *
+ * input should be the string with the $-expressions, source should be the
+ * string that was matched against.
+ *
+ * It returns the substituted string, or NULL on error.
+ *
+ * Parts of this code are based on Henry Spencer's regsub(), from his
+ * AT&T V8 regexp package.
+ */
+
+AP_DECLARE(char *) ap_pregsub(apr_pool_t *p, const char *input,
+ const char *source, size_t nmatch,
+ regmatch_t pmatch[])
+{
+ const char *src = input;
+ char *dest, *dst;
+ char c;
+ size_t no;
+ int len;
+
+ if (!source)
+ return NULL;
+ if (!nmatch)
+ return apr_pstrdup(p, src);
+
+ /* First pass, find the size */
+
+ len = 0;
+
+ while ((c = *src++) != '\0') {
+ if (c == '&')
+ no = 0;
+ else if (c == '$' && apr_isdigit(*src))
+ no = *src++ - '0';
+ else
+ no = 10;
+
+ if (no > 9) { /* Ordinary character. */
+ if (c == '\\' && (*src == '$' || *src == '&'))
+ c = *src++;
+ len++;
+ }
+ else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) {
+ len += pmatch[no].rm_eo - pmatch[no].rm_so;
+ }
+
+ }
+
+ dest = dst = apr_pcalloc(p, len + 1);
+
+ /* Now actually fill in the string */
+
+ src = input;
+
+ while ((c = *src++) != '\0') {
+ if (c == '&')
+ no = 0;
+ else if (c == '$' && apr_isdigit(*src))
+ no = *src++ - '0';
+ else
+ no = 10;
+
+ if (no > 9) { /* Ordinary character. */
+ if (c == '\\' && (*src == '$' || *src == '&'))
+ c = *src++;
+ *dst++ = c;
+ }
+ else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) {
+ len = pmatch[no].rm_eo - pmatch[no].rm_so;
+ memcpy(dst, source + pmatch[no].rm_so, len);
+ dst += len;
+ }
+
+ }
+ *dst = '\0';
+
+ return dest;
+}
+
+/*
+ * Parse .. so we don't compromise security
+ */
+AP_DECLARE(void) ap_getparents(char *name)
+{
+ char *next;
+ int l, w, first_dot;
+
+ /* Four paseses, as per RFC 1808 */
+ /* a) remove ./ path segments */
+ for (next = name; *next && (*next != '.'); next++) {
+ }
+
+ l = w = first_dot = next - name;
+ while (name[l] != '\0') {
+ if (name[l] == '.' && IS_SLASH(name[l + 1])
+ && (l == 0 || IS_SLASH(name[l - 1])))
+ l += 2;
+ else
+ name[w++] = name[l++];
+ }
+
+ /* b) remove trailing . path, segment */
+ if (w == 1 && name[0] == '.')
+ w--;
+ else if (w > 1 && name[w - 1] == '.' && IS_SLASH(name[w - 2]))
+ w--;
+ name[w] = '\0';
+
+ /* c) remove all xx/../ segments. (including leading ../ and /../) */
+ l = first_dot;
+
+ while (name[l] != '\0') {
+ if (name[l] == '.' && name[l + 1] == '.' && IS_SLASH(name[l + 2])
+ && (l == 0 || IS_SLASH(name[l - 1]))) {
+ register int m = l + 3, n;
+
+ l = l - 2;
+ if (l >= 0) {
+ while (l >= 0 && !IS_SLASH(name[l]))
+ l--;
+ l++;
+ }
+ else
+ l = 0;
+ n = l;
+ while ((name[n] = name[m]))
+ (++n, ++m);
+ }
+ else
+ ++l;
+ }
+
+ /* d) remove trailing xx/.. segment. */
+ if (l == 2 && name[0] == '.' && name[1] == '.')
+ name[0] = '\0';
+ else if (l > 2 && name[l - 1] == '.' && name[l - 2] == '.'
+ && IS_SLASH(name[l - 3])) {
+ l = l - 4;
+ if (l >= 0) {
+ while (l >= 0 && !IS_SLASH(name[l]))
+ l--;
+ l++;
+ }
+ else
+ l = 0;
+ name[l] = '\0';
+ }
+}
+
+AP_DECLARE(void) ap_no2slash(char *name)
+{
+ char *d, *s;
+
+ s = d = name;
+
+#ifdef HAVE_UNC_PATHS
+ /* Check for UNC names. Leave leading two slashes. */
+ if (s[0] == '/' && s[1] == '/')
+ *d++ = *s++;
+#endif
+
+ while (*s) {
+ if ((*d++ = *s) == '/') {
+ do {
+ ++s;
+ } while (*s == '/');
+ }
+ else {
+ ++s;
+ }
+ }
+ *d = '\0';
+}
+
+
+/*
+ * copy at most n leading directories of s into d
+ * d should be at least as large as s plus 1 extra byte
+ * assumes n > 0
+ * the return value is the ever useful pointer to the trailing \0 of d
+ *
+ * MODIFIED FOR HAVE_DRIVE_LETTERS and NETWARE environments,
+ * so that if n == 0, "/" is returned in d with n == 1
+ * and s == "e:/test.html", "e:/" is returned in d
+ * *** See also directory_walk in modules/http/http_request.c
+
+ * examples:
+ * /a/b, 0 ==> / (true for all platforms)
+ * /a/b, 1 ==> /
+ * /a/b, 2 ==> /a/
+ * /a/b, 3 ==> /a/b/
+ * /a/b, 4 ==> /a/b/
+ *
+ * c:/a/b 0 ==> /
+ * c:/a/b 1 ==> c:/
+ * c:/a/b 2 ==> c:/a/
+ * c:/a/b 3 ==> c:/a/b
+ * c:/a/b 4 ==> c:/a/b
+ */
+AP_DECLARE(char *) ap_make_dirstr_prefix(char *d, const char *s, int n)
+{
+ if (n < 1) {
+ *d = '/';
+ *++d = '\0';
+ return (d);
+ }
+
+ for (;;) {
+ if (*s == '\0' || (*s == '/' && (--n) == 0)) {
+ *d = '/';
+ break;
+ }
+ *d++ = *s++;
+ }
+ *++d = 0;
+ return (d);
+}
+
+
+/*
+ * return the parent directory name including trailing / of the file s
+ */
+AP_DECLARE(char *) ap_make_dirstr_parent(apr_pool_t *p, const char *s)
+{
+ const char *last_slash = ap_strrchr_c(s, '/');
+ char *d;
+ int l;
+
+ if (last_slash == NULL) {
+ return apr_pstrdup(p, "");
+ }
+ l = (last_slash - s) + 1;
+ d = apr_palloc(p, l + 1);
+ memcpy(d, s, l);
+ d[l] = 0;
+ return (d);
+}
+
+
+AP_DECLARE(int) ap_count_dirs(const char *path)
+{
+ register int x, n;
+
+ for (x = 0, n = 0; path[x]; x++)
+ if (path[x] == '/')
+ n++;
+ return n;
+}
+
+AP_DECLARE(char *) ap_getword_nc(apr_pool_t *atrans, char **line, char stop)
+{
+ return ap_getword(atrans, (const char **) line, stop);
+}
+
+AP_DECLARE(char *) ap_getword(apr_pool_t *atrans, const char **line, char stop)
+{
+ const char *pos = *line;
+ int len;
+ char *res;
+
+ while ((*pos != stop) && *pos) {
+ ++pos;
+ }
+
+ len = pos - *line;
+ res = (char *)apr_palloc(atrans, len + 1);
+ memcpy(res, *line, len);
+ res[len] = 0;
+
+ if (stop) {
+ while (*pos == stop) {
+ ++pos;
+ }
+ }
+ *line = pos;
+
+ return res;
+}
+
+AP_DECLARE(char *) ap_getword_white_nc(apr_pool_t *atrans, char **line)
+{
+ return ap_getword_white(atrans, (const char **) line);
+}
+
+AP_DECLARE(char *) ap_getword_white(apr_pool_t *atrans, const char **line)
+{
+ const char *pos = *line;
+ int len;
+ char *res;
+
+ while (!apr_isspace(*pos) && *pos) {
+ ++pos;
+ }
+
+ len = pos - *line;
+ res = (char *)apr_palloc(atrans, len + 1);
+ memcpy(res, *line, len);
+ res[len] = 0;
+
+ while (apr_isspace(*pos)) {
+ ++pos;
+ }
+
+ *line = pos;
+
+ return res;
+}
+
+AP_DECLARE(char *) ap_getword_nulls_nc(apr_pool_t *atrans, char **line,
+ char stop)
+{
+ return ap_getword_nulls(atrans, (const char **) line, stop);
+}
+
+AP_DECLARE(char *) ap_getword_nulls(apr_pool_t *atrans, const char **line,
+ char stop)
+{
+ const char *pos = ap_strchr_c(*line, stop);
+ char *res;
+
+ if (!pos) {
+ res = apr_pstrdup(atrans, *line);
+ *line += strlen(*line);
+ return res;
+ }
+
+ res = apr_pstrndup(atrans, *line, pos - *line);
+
+ ++pos;
+
+ *line = pos;
+
+ return res;
+}
+
+/* Get a word, (new) config-file style --- quoted strings and backslashes
+ * all honored
+ */
+
+static char *substring_conf(apr_pool_t *p, const char *start, int len,
+ char quote)
+{
+ char *result = apr_palloc(p, len + 2);
+ char *resp = result;
+ int i;
+
+ for (i = 0; i < len; ++i) {
+ if (start[i] == '\\' && (start[i + 1] == '\\'
+ || (quote && start[i + 1] == quote)))
+ *resp++ = start[++i];
+ else
+ *resp++ = start[i];
+ }
+
+ *resp++ = '\0';
+#if RESOLVE_ENV_PER_TOKEN
+ return (char *)ap_resolve_env(p,result);
+#else
+ return result;
+#endif
+}
+
+AP_DECLARE(char *) ap_getword_conf_nc(apr_pool_t *p, char **line)
+{
+ return ap_getword_conf(p, (const char **) line);
+}
+
+AP_DECLARE(char *) ap_getword_conf(apr_pool_t *p, const char **line)
+{
+ const char *str = *line, *strend;
+ char *res;
+ char quote;
+
+ while (*str && apr_isspace(*str))
+ ++str;
+
+ if (!*str) {
+ *line = str;
+ return "";
+ }
+
+ if ((quote = *str) == '"' || quote == '\'') {
+ strend = str + 1;
+ while (*strend && *strend != quote) {
+ if (*strend == '\\' && strend[1] && strend[1] == quote)
+ strend += 2;
+ else
+ ++strend;
+ }
+ res = substring_conf(p, str + 1, strend - str - 1, quote);
+
+ if (*strend == quote)
+ ++strend;
+ }
+ else {
+ strend = str;
+ while (*strend && !apr_isspace(*strend))
+ ++strend;
+
+ res = substring_conf(p, str, strend - str, 0);
+ }
+
+ while (*strend && apr_isspace(*strend))
+ ++strend;
+ *line = strend;
+ return res;
+}
+
+/* Check a string for any ${ENV} environment variable
+ * construct and replace each them by the value of
+ * that environment variable, if it exists. If the
+ * environment value does not exist, leave the ${ENV}
+ * construct alone; it means something else.
+ */
+AP_DECLARE(const char *) ap_resolve_env(apr_pool_t *p, const char * word)
+{
+# define SMALL_EXPANSION 5
+ struct sll {
+ struct sll *next;
+ const char *string;
+ apr_size_t len;
+ } *result, *current, sresult[SMALL_EXPANSION];
+ char *res_buf, *cp;
+ const char *s, *e, *ep;
+ unsigned spc;
+ apr_size_t outlen;
+
+ s = ap_strchr_c(word, '$');
+ if (!s) {
+ return word;
+ }
+
+ /* well, actually something to do */
+ ep = word + strlen(word);
+ spc = 0;
+ result = current = &(sresult[spc++]);
+ current->next = NULL;
+ current->string = word;
+ current->len = s - word;
+ outlen = current->len;
+
+ do {
+ /* prepare next entry */
+ if (current->len) {
+ current->next = (spc < SMALL_EXPANSION)
+ ? &(sresult[spc++])
+ : (struct sll *)apr_palloc(p,
+ sizeof(*current->next));
+ current = current->next;
+ current->next = NULL;
+ current->len = 0;
+ }
+
+ if (*s == '$') {
+ if (s[1] == '{' && (e = ap_strchr_c(s, '}'))) {
+ word = getenv(apr_pstrndup(p, s+2, e-s-2));
+ if (word) {
+ current->string = word;
+ current->len = strlen(word);
+ outlen += current->len;
+ }
+ else {
+ current->string = s;
+ current->len = e - s + 1;
+ outlen += current->len;
+ }
+ s = e + 1;
+ }
+ else {
+ current->string = s++;
+ current->len = 1;
+ ++outlen;
+ }
+ }
+ else {
+ word = s;
+ s = ap_strchr_c(s, '$');
+ current->string = word;
+ current->len = s ? s - word : ep - word;
+ outlen += current->len;
+ }
+ } while (s && *s);
+
+ /* assemble result */
+ res_buf = cp = apr_palloc(p, outlen + 1);
+ do {
+ if (result->len) {
+ memcpy(cp, result->string, result->len);
+ cp += result->len;
+ }
+ result = result->next;
+ } while (result);
+ res_buf[outlen] = '\0';
+
+ return res_buf;
+}
+
+AP_DECLARE(int) ap_cfg_closefile(ap_configfile_t *cfp)
+{
+#ifdef DEBUG
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, NULL,
+ "Done with config file %s", cfp->name);
+#endif
+ return (cfp->close == NULL) ? 0 : cfp->close(cfp->param);
+}
+
+static apr_status_t cfg_close(void *param)
+{
+ apr_file_t *cfp = (apr_file_t *) param;
+ return (apr_file_close(cfp));
+}
+
+static int cfg_getch(void *param)
+{
+ char ch;
+ apr_file_t *cfp = (apr_file_t *) param;
+ if (apr_file_getc(&ch, cfp) == APR_SUCCESS)
+ return ch;
+ return (int)EOF;
+}
+
+static void *cfg_getstr(void *buf, size_t bufsiz, void *param)
+{
+ apr_file_t *cfp = (apr_file_t *) param;
+ apr_status_t rv;
+ rv = apr_file_gets(buf, bufsiz, cfp);
+ if (rv == APR_SUCCESS || (APR_STATUS_IS_EOF(rv) && strcmp(buf, "")))
+ return buf;
+ return NULL;
+}
+
+/* Open a ap_configfile_t as FILE, return open ap_configfile_t struct pointer */
+AP_DECLARE(apr_status_t) ap_pcfg_openfile(ap_configfile_t **ret_cfg,
+ apr_pool_t *p, const char *name)
+{
+ ap_configfile_t *new_cfg;
+ apr_file_t *file = NULL;
+ apr_finfo_t finfo;
+ apr_status_t status;
+#ifdef DEBUG
+ char buf[120];
+#endif
+
+ if (name == NULL) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, NULL,
+ "Internal error: pcfg_openfile() called with NULL filename");
+ return APR_EBADF;
+ }
+
+ status = apr_file_open(&file, name, APR_READ | APR_BUFFERED,
+ APR_OS_DEFAULT, p);
+#ifdef DEBUG
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, NULL,
+ "Opening config file %s (%s)",
+ name, (status != APR_SUCCESS) ?
+ apr_strerror(status, buf, sizeof(buf)) : "successful");
+#endif
+ if (status != APR_SUCCESS)
+ return status;
+
+ status = apr_file_info_get(&finfo, APR_FINFO_TYPE, file);
+ if (status != APR_SUCCESS)
+ return status;
+
+ if (finfo.filetype != APR_REG &&
+#if defined(WIN32) || defined(OS2) || defined(NETWARE)
+ strcasecmp(apr_filename_of_pathname(name), "nul") != 0) {
+#else
+ strcmp(name, "/dev/null") != 0) {
+#endif /* WIN32 || OS2 */
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, NULL,
+ "Access to file %s denied by server: not a regular file",
+ name);
+ apr_file_close(file);
+ return APR_EBADF;
+ }
+
+#ifdef WIN32
+ /* Some twisted character [no pun intended] at MS decided that a
+ * zero width joiner as the lead wide character would be ideal for
+ * describing Unicode text files. This was further convoluted to
+ * another MSism that the same character mapped into utf-8, EF BB BF
+ * would signify utf-8 text files.
+ *
+ * Since MS configuration files are all protecting utf-8 encoded
+ * Unicode path, file and resource names, we already have the correct
+ * WinNT encoding. But at least eat the stupid three bytes up front.
+ */
+ {
+ unsigned char buf[4];
+ apr_size_t len = 3;
+ status = apr_file_read(file, buf, &len);
+ if ((status != APR_SUCCESS) || (len < 3)
+ || memcmp(buf, "\xEF\xBB\xBF", 3) != 0) {
+ apr_off_t zero = 0;
+ apr_file_seek(file, APR_SET, &zero);
+ }
+ }
+#endif
+
+ new_cfg = apr_palloc(p, sizeof(*new_cfg));
+ new_cfg->param = file;
+ new_cfg->name = apr_pstrdup(p, name);
+ new_cfg->getch = (int (*)(void *)) cfg_getch;
+ new_cfg->getstr = (void *(*)(void *, size_t, void *)) cfg_getstr;
+ new_cfg->close = (int (*)(void *)) cfg_close;
+ new_cfg->line_number = 0;
+ *ret_cfg = new_cfg;
+ return APR_SUCCESS;
+}
+
+
+/* Allocate a ap_configfile_t handle with user defined functions and params */
+AP_DECLARE(ap_configfile_t *) ap_pcfg_open_custom(apr_pool_t *p,
+ const char *descr,
+ void *param,
+ int(*getch)(void *param),
+ void *(*getstr) (void *buf, size_t bufsiz, void *param),
+ int(*close_func)(void *param))
+{
+ ap_configfile_t *new_cfg = apr_palloc(p, sizeof(*new_cfg));
+#ifdef DEBUG
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, NULL,
+ "Opening config handler %s", descr);
+#endif
+ new_cfg->param = param;
+ new_cfg->name = descr;
+ new_cfg->getch = getch;
+ new_cfg->getstr = getstr;
+ new_cfg->close = close_func;
+ new_cfg->line_number = 0;
+ return new_cfg;
+}
+
+/* Read one character from a configfile_t */
+AP_DECLARE(int) ap_cfg_getc(ap_configfile_t *cfp)
+{
+ register int ch = cfp->getch(cfp->param);
+ if (ch == LF)
+ ++cfp->line_number;
+ return ch;
+}
+
+/* Read one line from open ap_configfile_t, strip LF, increase line number */
+/* If custom handler does not define a getstr() function, read char by char */
+AP_DECLARE(int) ap_cfg_getline(char *buf, size_t bufsize, ap_configfile_t *cfp)
+{
+ /* If a "get string" function is defined, use it */
+ if (cfp->getstr != NULL) {
+ char *src, *dst;
+ char *cp;
+ char *cbuf = buf;
+ size_t cbufsize = bufsize;
+
+ while (1) {
+ ++cfp->line_number;
+ if (cfp->getstr(cbuf, cbufsize, cfp->param) == NULL)
+ return 1;
+
+ /*
+ * check for line continuation,
+ * i.e. match [^\\]\\[\r]\n only
+ */
+ cp = cbuf;
+ while (cp < cbuf+cbufsize && *cp != '\0')
+ cp++;
+ if (cp > cbuf && cp[-1] == LF) {
+ cp--;
+ if (cp > cbuf && cp[-1] == CR)
+ cp--;
+ if (cp > cbuf && cp[-1] == '\\') {
+ cp--;
+ if (!(cp > cbuf && cp[-1] == '\\')) {
+ /*
+ * line continuation requested -
+ * then remove backslash and continue
+ */
+ cbufsize -= (cp-cbuf);
+ cbuf = cp;
+ continue;
+ }
+ else {
+ /*
+ * no real continuation because escaped -
+ * then just remove escape character
+ */
+ for ( ; cp < cbuf+cbufsize && *cp != '\0'; cp++)
+ cp[0] = cp[1];
+ }
+ }
+ }
+ break;
+ }
+
+ /*
+ * Leading and trailing white space is eliminated completely
+ */
+ src = buf;
+ while (apr_isspace(*src))
+ ++src;
+ /* blast trailing whitespace */
+ dst = &src[strlen(src)];
+ while (--dst >= src && apr_isspace(*dst))
+ *dst = '\0';
+ /* Zap leading whitespace by shifting */
+ if (src != buf)
+ for (dst = buf; (*dst++ = *src++) != '\0'; )
+ ;
+
+#ifdef DEBUG_CFG_LINES
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, NULL, "Read config: %s", buf);
+#endif
+ return 0;
+ } else {
+ /* No "get string" function defined; read character by character */
+ register int c;
+ register size_t i = 0;
+
+ buf[0] = '\0';
+ /* skip leading whitespace */
+ do {
+ c = cfp->getch(cfp->param);
+ } while (c == '\t' || c == ' ');
+
+ if (c == EOF)
+ return 1;
+
+ if(bufsize < 2) {
+ /* too small, assume caller is crazy */
+ return 1;
+ }
+
+ while (1) {
+ if ((c == '\t') || (c == ' ')) {
+ buf[i++] = ' ';
+ while ((c == '\t') || (c == ' '))
+ c = cfp->getch(cfp->param);
+ }
+ if (c == CR) {
+ /* silently ignore CR (_assume_ that a LF follows) */
+ c = cfp->getch(cfp->param);
+ }
+ if (c == LF) {
+ /* increase line number and return on LF */
+ ++cfp->line_number;
+ }
+ if (c == EOF || c == 0x4 || c == LF || i >= (bufsize - 2)) {
+ /*
+ * check for line continuation
+ */
+ if (i > 0 && buf[i-1] == '\\') {
+ i--;
+ if (!(i > 0 && buf[i-1] == '\\')) {
+ /* line is continued */
+ c = cfp->getch(cfp->param);
+ continue;
+ }
+ /* else nothing needs be done because
+ * then the backslash is escaped and
+ * we just strip to a single one
+ */
+ }
+ /* blast trailing whitespace */
+ while (i > 0 && apr_isspace(buf[i - 1]))
+ --i;
+ buf[i] = '\0';
+#ifdef DEBUG_CFG_LINES
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, NULL,
+ "Read config: %s", buf);
+#endif
+ return 0;
+ }
+ buf[i] = c;
+ ++i;
+ c = cfp->getch(cfp->param);
+ }
+ }
+}
+
+/* Size an HTTP header field list item, as separated by a comma.
+ * The return value is a pointer to the beginning of the non-empty list item
+ * within the original string (or NULL if there is none) and the address
+ * of field is shifted to the next non-comma, non-whitespace character.
+ * len is the length of the item excluding any beginning whitespace.
+ */
+AP_DECLARE(const char *) ap_size_list_item(const char **field, int *len)
+{
+ const unsigned char *ptr = (const unsigned char *)*field;
+ const unsigned char *token;
+ int in_qpair, in_qstr, in_com;
+
+ /* Find first non-comma, non-whitespace byte */
+
+ while (*ptr == ',' || apr_isspace(*ptr))
+ ++ptr;
+
+ token = ptr;
+
+ /* Find the end of this item, skipping over dead bits */
+
+ for (in_qpair = in_qstr = in_com = 0;
+ *ptr && (in_qpair || in_qstr || in_com || *ptr != ',');
+ ++ptr) {
+
+ if (in_qpair) {
+ in_qpair = 0;
+ }
+ else {
+ switch (*ptr) {
+ case '\\': in_qpair = 1; /* quoted-pair */
+ break;
+ case '"' : if (!in_com) /* quoted string delim */
+ in_qstr = !in_qstr;
+ break;
+ case '(' : if (!in_qstr) /* comment (may nest) */
+ ++in_com;
+ break;
+ case ')' : if (in_com) /* end comment */
+ --in_com;
+ break;
+ default : break;
+ }
+ }
+ }
+
+ if ((*len = (ptr - token)) == 0) {
+ *field = (const char *)ptr;
+ return NULL;
+ }
+
+ /* Advance field pointer to the next non-comma, non-white byte */
+
+ while (*ptr == ',' || apr_isspace(*ptr))
+ ++ptr;
+
+ *field = (const char *)ptr;
+ return (const char *)token;
+}
+
+/* Retrieve an HTTP header field list item, as separated by a comma,
+ * while stripping insignificant whitespace and lowercasing anything not in
+ * a quoted string or comment. The return value is a new string containing
+ * the converted list item (or NULL if none) and the address pointed to by
+ * field is shifted to the next non-comma, non-whitespace.
+ */
+AP_DECLARE(char *) ap_get_list_item(apr_pool_t *p, const char **field)
+{
+ const char *tok_start;
+ const unsigned char *ptr;
+ unsigned char *pos;
+ char *token;
+ int addspace = 0, in_qpair = 0, in_qstr = 0, in_com = 0, tok_len = 0;
+
+ /* Find the beginning and maximum length of the list item so that
+ * we can allocate a buffer for the new string and reset the field.
+ */
+ if ((tok_start = ap_size_list_item(field, &tok_len)) == NULL) {
+ return NULL;
+ }
+ token = apr_palloc(p, tok_len + 1);
+
+ /* Scan the token again, but this time copy only the good bytes.
+ * We skip extra whitespace and any whitespace around a '=', '/',
+ * or ';' and lowercase normal characters not within a comment,
+ * quoted-string or quoted-pair.
+ */
+ for (ptr = (const unsigned char *)tok_start, pos = (unsigned char *)token;
+ *ptr && (in_qpair || in_qstr || in_com || *ptr != ',');
+ ++ptr) {
+
+ if (in_qpair) {
+ in_qpair = 0;
+ *pos++ = *ptr;
+ }
+ else {
+ switch (*ptr) {
+ case '\\': in_qpair = 1;
+ if (addspace == 1)
+ *pos++ = ' ';
+ *pos++ = *ptr;
+ addspace = 0;
+ break;
+ case '"' : if (!in_com)
+ in_qstr = !in_qstr;
+ if (addspace == 1)
+ *pos++ = ' ';
+ *pos++ = *ptr;
+ addspace = 0;
+ break;
+ case '(' : if (!in_qstr)
+ ++in_com;
+ if (addspace == 1)
+ *pos++ = ' ';
+ *pos++ = *ptr;
+ addspace = 0;
+ break;
+ case ')' : if (in_com)
+ --in_com;
+ *pos++ = *ptr;
+ addspace = 0;
+ break;
+ case ' ' :
+ case '\t': if (addspace)
+ break;
+ if (in_com || in_qstr)
+ *pos++ = *ptr;
+ else
+ addspace = 1;
+ break;
+ case '=' :
+ case '/' :
+ case ';' : if (!(in_com || in_qstr))
+ addspace = -1;
+ *pos++ = *ptr;
+ break;
+ default : if (addspace == 1)
+ *pos++ = ' ';
+ *pos++ = (in_com || in_qstr) ? *ptr
+ : apr_tolower(*ptr);
+ addspace = 0;
+ break;
+ }
+ }
+ }
+ *pos = '\0';
+
+ return token;
+}
+
+/* Find an item in canonical form (lowercase, no extra spaces) within
+ * an HTTP field value list. Returns 1 if found, 0 if not found.
+ * This would be much more efficient if we stored header fields as
+ * an array of list items as they are received instead of a plain string.
+ */
+AP_DECLARE(int) ap_find_list_item(apr_pool_t *p, const char *line,
+ const char *tok)
+{
+ const unsigned char *pos;
+ const unsigned char *ptr = (const unsigned char *)line;
+ int good = 0, addspace = 0, in_qpair = 0, in_qstr = 0, in_com = 0;
+
+ if (!line || !tok)
+ return 0;
+
+ do { /* loop for each item in line's list */
+
+ /* Find first non-comma, non-whitespace byte */
+
+ while (*ptr == ',' || apr_isspace(*ptr))
+ ++ptr;
+
+ if (*ptr)
+ good = 1; /* until proven otherwise for this item */
+ else
+ break; /* no items left and nothing good found */
+
+ /* We skip extra whitespace and any whitespace around a '=', '/',
+ * or ';' and lowercase normal characters not within a comment,
+ * quoted-string or quoted-pair.
+ */
+ for (pos = (const unsigned char *)tok;
+ *ptr && (in_qpair || in_qstr || in_com || *ptr != ',');
+ ++ptr) {
+
+ if (in_qpair) {
+ in_qpair = 0;
+ if (good)
+ good = (*pos++ == *ptr);
+ }
+ else {
+ switch (*ptr) {
+ case '\\': in_qpair = 1;
+ if (addspace == 1)
+ good = good && (*pos++ == ' ');
+ good = good && (*pos++ == *ptr);
+ addspace = 0;
+ break;
+ case '"' : if (!in_com)
+ in_qstr = !in_qstr;
+ if (addspace == 1)
+ good = good && (*pos++ == ' ');
+ good = good && (*pos++ == *ptr);
+ addspace = 0;
+ break;
+ case '(' : if (!in_qstr)
+ ++in_com;
+ if (addspace == 1)
+ good = good && (*pos++ == ' ');
+ good = good && (*pos++ == *ptr);
+ addspace = 0;
+ break;
+ case ')' : if (in_com)
+ --in_com;
+ good = good && (*pos++ == *ptr);
+ addspace = 0;
+ break;
+ case ' ' :
+ case '\t': if (addspace || !good)
+ break;
+ if (in_com || in_qstr)
+ good = (*pos++ == *ptr);
+ else
+ addspace = 1;
+ break;
+ case '=' :
+ case '/' :
+ case ';' : if (!(in_com || in_qstr))
+ addspace = -1;
+ good = good && (*pos++ == *ptr);
+ break;
+ default : if (!good)
+ break;
+ if (addspace == 1)
+ good = (*pos++ == ' ');
+ if (in_com || in_qstr)
+ good = good && (*pos++ == *ptr);
+ else
+ good = good && (*pos++ == apr_tolower(*ptr));
+ addspace = 0;
+ break;
+ }
+ }
+ }
+ if (good && *pos)
+ good = 0; /* not good if only a prefix was matched */
+
+ } while (*ptr && !good);
+
+ return good;
+}
+
+
+/* Retrieve a token, spacing over it and returning a pointer to
+ * the first non-white byte afterwards. Note that these tokens
+ * are delimited by semis and commas; and can also be delimited
+ * by whitespace at the caller's option.
+ */
+
+AP_DECLARE(char *) ap_get_token(apr_pool_t *p, const char **accept_line,
+ int accept_white)
+{
+ const char *ptr = *accept_line;
+ const char *tok_start;
+ char *token;
+ int tok_len;
+
+ /* Find first non-white byte */
+
+ while (*ptr && apr_isspace(*ptr))
+ ++ptr;
+
+ tok_start = ptr;
+
+ /* find token end, skipping over quoted strings.
+ * (comments are already gone).
+ */
+
+ while (*ptr && (accept_white || !apr_isspace(*ptr))
+ && *ptr != ';' && *ptr != ',') {
+ if (*ptr++ == '"')
+ while (*ptr)
+ if (*ptr++ == '"')
+ break;
+ }
+
+ tok_len = ptr - tok_start;
+ token = apr_pstrndup(p, tok_start, tok_len);
+
+ /* Advance accept_line pointer to the next non-white byte */
+
+ while (*ptr && apr_isspace(*ptr))
+ ++ptr;
+
+ *accept_line = ptr;
+ return token;
+}
+
+
+/* find http tokens, see the definition of token from RFC2068 */
+AP_DECLARE(int) ap_find_token(apr_pool_t *p, const char *line, const char *tok)
+{
+ const unsigned char *start_token;
+ const unsigned char *s;
+
+ if (!line)
+ return 0;
+
+ s = (const unsigned char *)line;
+ for (;;) {
+ /* find start of token, skip all stop characters, note NUL
+ * isn't a token stop, so we don't need to test for it
+ */
+ while (TEST_CHAR(*s, T_HTTP_TOKEN_STOP)) {
+ ++s;
+ }
+ if (!*s) {
+ return 0;
+ }
+ start_token = s;
+ /* find end of the token */
+ while (*s && !TEST_CHAR(*s, T_HTTP_TOKEN_STOP)) {
+ ++s;
+ }
+ if (!strncasecmp((const char *)start_token, (const char *)tok,
+ s - start_token)) {
+ return 1;
+ }
+ if (!*s) {
+ return 0;
+ }
+ }
+}
+
+
+AP_DECLARE(int) ap_find_last_token(apr_pool_t *p, const char *line,
+ const char *tok)
+{
+ int llen, tlen, lidx;
+
+ if (!line)
+ return 0;
+
+ llen = strlen(line);
+ tlen = strlen(tok);
+ lidx = llen - tlen;
+
+ if (lidx < 0 ||
+ (lidx > 0 && !(apr_isspace(line[lidx - 1]) || line[lidx - 1] == ',')))
+ return 0;
+
+ return (strncasecmp(&line[lidx], tok, tlen) == 0);
+}
+
+AP_DECLARE(char *) ap_escape_shell_cmd(apr_pool_t *p, const char *str)
+{
+ char *cmd;
+ unsigned char *d;
+ const unsigned char *s;
+
+ cmd = apr_palloc(p, 2 * strlen(str) + 1); /* Be safe */
+ d = (unsigned char *)cmd;
+ s = (const unsigned char *)str;
+ for (; *s; ++s) {
+
+#if defined(OS2) || defined(WIN32)
+ /*
+ * Newlines to Win32/OS2 CreateProcess() are ill advised.
+ * Convert them to spaces since they are effectively white
+ * space to most applications
+ */
+ if (*s == '\r' || *s == '\n') {
+ *d++ = ' ';
+ continue;
+ }
+#endif
+
+ if (TEST_CHAR(*s, T_ESCAPE_SHELL_CMD)) {
+ *d++ = '\\';
+ }
+ *d++ = *s;
+ }
+ *d = '\0';
+
+ return cmd;
+}
+
+static char x2c(const char *what)
+{
+ register char digit;
+
+#if !APR_CHARSET_EBCDIC
+ digit = ((what[0] >= 'A') ? ((what[0] & 0xdf) - 'A') + 10
+ : (what[0] - '0'));
+ digit *= 16;
+ digit += (what[1] >= 'A' ? ((what[1] & 0xdf) - 'A') + 10
+ : (what[1] - '0'));
+#else /*APR_CHARSET_EBCDIC*/
+ char xstr[5];
+ xstr[0]='0';
+ xstr[1]='x';
+ xstr[2]=what[0];
+ xstr[3]=what[1];
+ xstr[4]='\0';
+ digit = apr_xlate_conv_byte(ap_hdrs_from_ascii,
+ 0xFF & strtol(xstr, NULL, 16));
+#endif /*APR_CHARSET_EBCDIC*/
+ return (digit);
+}
+
+/*
+ * Unescapes a URL.
+ * Returns 0 on success, non-zero on error
+ * Failure is due to
+ * bad % escape returns HTTP_BAD_REQUEST
+ *
+ * decoding %00 -> \0 (the null character)
+ * decoding %2f -> / (a special character)
+ * returns HTTP_NOT_FOUND
+ */
+AP_DECLARE(int) ap_unescape_url(char *url)
+{
+ register int badesc, badpath;
+ char *x, *y;
+
+ badesc = 0;
+ badpath = 0;
+ /* Initial scan for first '%'. Don't bother writing values before
+ * seeing a '%' */
+ y = strchr(url, '%');
+ if (y == NULL) {
+ return OK;
+ }
+ for (x = y; *y; ++x, ++y) {
+ if (*y != '%')
+ *x = *y;
+ else {
+ if (!apr_isxdigit(*(y + 1)) || !apr_isxdigit(*(y + 2))) {
+ badesc = 1;
+ *x = '%';
+ }
+ else {
+ *x = x2c(y + 1);
+ y += 2;
+ if (IS_SLASH(*x) || *x == '\0')
+ badpath = 1;
+ }
+ }
+ }
+ *x = '\0';
+ if (badesc)
+ return HTTP_BAD_REQUEST;
+ else if (badpath)
+ return HTTP_NOT_FOUND;
+ else
+ return OK;
+}
+
+AP_DECLARE(int) ap_unescape_url_keep2f(char *url)
+{
+ register int badesc, badpath;
+ char *x, *y;
+
+ badesc = 0;
+ badpath = 0;
+ /* Initial scan for first '%'. Don't bother writing values before
+ * seeing a '%' */
+ y = strchr(url, '%');
+ if (y == NULL) {
+ return OK;
+ }
+ for (x = y; *y; ++x, ++y) {
+ if (*y != '%') {
+ *x = *y;
+ }
+ else {
+ if (!apr_isxdigit(*(y + 1)) || !apr_isxdigit(*(y + 2))) {
+ badesc = 1;
+ *x = '%';
+ }
+ else {
+ char decoded;
+ decoded = x2c(y + 1);
+ if (decoded == '\0') {
+ badpath = 1;
+ }
+ else {
+ *x = decoded;
+ y += 2;
+ }
+ }
+ }
+ }
+ *x = '\0';
+ if (badesc) {
+ return HTTP_BAD_REQUEST;
+ }
+ else if (badpath) {
+ return HTTP_NOT_FOUND;
+ }
+ else {
+ return OK;
+ }
+}
+
+AP_DECLARE(char *) ap_construct_server(apr_pool_t *p, const char *hostname,
+ apr_port_t port, const request_rec *r)
+{
+ if (ap_is_default_port(port, r)) {
+ return apr_pstrdup(p, hostname);
+ }
+ else {
+ return apr_psprintf(p, "%s:%u", hostname, port);
+ }
+}
+
+/* c2x takes an unsigned, and expects the caller has guaranteed that
+ * 0 <= what < 256... which usually means that you have to cast to
+ * unsigned char first, because (unsigned)(char)(x) first goes through
+ * signed extension to an int before the unsigned cast.
+ *
+ * The reason for this assumption is to assist gcc code generation --
+ * the unsigned char -> unsigned extension is already done earlier in
+ * both uses of this code, so there's no need to waste time doing it
+ * again.
+ */
+static const char c2x_table[] = "0123456789abcdef";
+
+static APR_INLINE unsigned char *c2x(unsigned what, unsigned char *where)
+{
+#if APR_CHARSET_EBCDIC
+ what = apr_xlate_conv_byte(ap_hdrs_to_ascii, (unsigned char)what);
+#endif /*APR_CHARSET_EBCDIC*/
+ *where++ = '%';
+ *where++ = c2x_table[what >> 4];
+ *where++ = c2x_table[what & 0xf];
+ return where;
+}
+
+/*
+ * escape_path_segment() escapes a path segment, as defined in RFC 1808. This
+ * routine is (should be) OS independent.
+ *
+ * os_escape_path() converts an OS path to a URL, in an OS dependent way. In all
+ * cases if a ':' occurs before the first '/' in the URL, the URL should be
+ * prefixed with "./" (or the ':' escaped). In the case of Unix, this means
+ * leaving '/' alone, but otherwise doing what escape_path_segment() does. For
+ * efficiency reasons, we don't use escape_path_segment(), which is provided for
+ * reference. Again, RFC 1808 is where this stuff is defined.
+ *
+ * If partial is set, os_escape_path() assumes that the path will be appended to
+ * something with a '/' in it (and thus does not prefix "./").
+ */
+
+AP_DECLARE(char *) ap_escape_path_segment(apr_pool_t *p, const char *segment)
+{
+ char *copy = apr_palloc(p, 3 * strlen(segment) + 1);
+ const unsigned char *s = (const unsigned char *)segment;
+ unsigned char *d = (unsigned char *)copy;
+ unsigned c;
+
+ while ((c = *s)) {
+ if (TEST_CHAR(c, T_ESCAPE_PATH_SEGMENT)) {
+ d = c2x(c, d);
+ }
+ else {
+ *d++ = c;
+ }
+ ++s;
+ }
+ *d = '\0';
+ return copy;
+}
+
+AP_DECLARE(char *) ap_os_escape_path(apr_pool_t *p, const char *path, int partial)
+{
+ char *copy = apr_palloc(p, 3 * strlen(path) + 3);
+ const unsigned char *s = (const unsigned char *)path;
+ unsigned char *d = (unsigned char *)copy;
+ unsigned c;
+
+ if (!partial) {
+ const char *colon = ap_strchr_c(path, ':');
+ const char *slash = ap_strchr_c(path, '/');
+
+ if (colon && (!slash || colon < slash)) {
+ *d++ = '.';
+ *d++ = '/';
+ }
+ }
+ while ((c = *s)) {
+ if (TEST_CHAR(c, T_OS_ESCAPE_PATH)) {
+ d = c2x(c, d);
+ }
+ else {
+ *d++ = c;
+ }
+ ++s;
+ }
+ *d = '\0';
+ return copy;
+}
+
+/* ap_escape_uri is now a macro for os_escape_path */
+
+AP_DECLARE(char *) ap_escape_html(apr_pool_t *p, const char *s)
+{
+ int i, j;
+ char *x;
+
+ /* first, count the number of extra characters */
+ for (i = 0, j = 0; s[i] != '\0'; i++)
+ if (s[i] == '<' || s[i] == '>')
+ j += 3;
+ else if (s[i] == '&')
+ j += 4;
+ else if (s[i] == '"')
+ j += 5;
+
+ if (j == 0)
+ return apr_pstrmemdup(p, s, i);
+
+ x = apr_palloc(p, i + j + 1);
+ for (i = 0, j = 0; s[i] != '\0'; i++, j++)
+ if (s[i] == '<') {
+ memcpy(&x[j], "&lt;", 4);
+ j += 3;
+ }
+ else if (s[i] == '>') {
+ memcpy(&x[j], "&gt;", 4);
+ j += 3;
+ }
+ else if (s[i] == '&') {
+ memcpy(&x[j], "&amp;", 5);
+ j += 4;
+ }
+ else if (s[i] == '"') {
+ memcpy(&x[j], "&quot;", 6);
+ j += 5;
+ }
+ else
+ x[j] = s[i];
+
+ x[j] = '\0';
+ return x;
+}
+
+AP_DECLARE(char *) ap_escape_logitem(apr_pool_t *p, const char *str)
+{
+ char *ret;
+ unsigned char *d;
+ const unsigned char *s;
+
+ if (!str) {
+ return NULL;
+ }
+
+ ret = apr_palloc(p, 4 * strlen(str) + 1); /* Be safe */
+ d = (unsigned char *)ret;
+ s = (const unsigned char *)str;
+ for (; *s; ++s) {
+
+ if (TEST_CHAR(*s, T_ESCAPE_LOGITEM)) {
+ *d++ = '\\';
+ switch(*s) {
+ case '\b':
+ *d++ = 'b';
+ break;
+ case '\n':
+ *d++ = 'n';
+ break;
+ case '\r':
+ *d++ = 'r';
+ break;
+ case '\t':
+ *d++ = 't';
+ break;
+ case '\v':
+ *d++ = 'v';
+ break;
+ case '\\':
+ case '"':
+ *d++ = *s;
+ break;
+ default:
+ c2x(*s, d);
+ *d = 'x';
+ d += 3;
+ }
+ }
+ else {
+ *d++ = *s;
+ }
+ }
+ *d = '\0';
+
+ return ret;
+}
+
+AP_DECLARE(apr_size_t) ap_escape_errorlog_item(char *dest, const char *source,
+ apr_size_t buflen)
+{
+ unsigned char *d, *ep;
+ const unsigned char *s;
+
+ if (!source || !buflen) { /* be safe */
+ return 0;
+ }
+
+ d = (unsigned char *)dest;
+ s = (const unsigned char *)source;
+ ep = d + buflen - 1;
+
+ for (; d < ep && *s; ++s) {
+
+ if (TEST_CHAR(*s, T_ESCAPE_LOGITEM)) {
+ *d++ = '\\';
+ if (d >= ep) {
+ --d;
+ break;
+ }
+
+ switch(*s) {
+ case '\b':
+ *d++ = 'b';
+ break;
+ case '\n':
+ *d++ = 'n';
+ break;
+ case '\r':
+ *d++ = 'r';
+ break;
+ case '\t':
+ *d++ = 't';
+ break;
+ case '\v':
+ *d++ = 'v';
+ break;
+ case '\\':
+ *d++ = *s;
+ break;
+ case '"': /* no need for this in error log */
+ d[-1] = *s;
+ break;
+ default:
+ if (d >= ep - 2) {
+ ep = --d; /* break the for loop as well */
+ break;
+ }
+ c2x(*s, d);
+ *d = 'x';
+ d += 3;
+ }
+ }
+ else {
+ *d++ = *s;
+ }
+ }
+ *d = '\0';
+
+ return (d - (unsigned char *)dest);
+}
+
+AP_DECLARE(int) ap_is_directory(apr_pool_t *p, const char *path)
+{
+ apr_finfo_t finfo;
+
+ if (apr_stat(&finfo, path, APR_FINFO_TYPE, p) != APR_SUCCESS)
+ return 0; /* in error condition, just return no */
+
+ return (finfo.filetype == APR_DIR);
+}
+
+AP_DECLARE(int) ap_is_rdirectory(apr_pool_t *p, const char *path)
+{
+ apr_finfo_t finfo;
+
+ if (apr_lstat(&finfo, path, APR_FINFO_TYPE, p) != APR_SUCCESS)
+ return 0; /* in error condition, just return no */
+
+ return (finfo.filetype == APR_DIR);
+}
+
+AP_DECLARE(char *) ap_make_full_path(apr_pool_t *a, const char *src1,
+ const char *src2)
+{
+ apr_size_t len1, len2;
+ char *path;
+
+ len1 = strlen(src1);
+ len2 = strlen(src2);
+ /* allocate +3 for '/' delimiter, trailing NULL and overallocate
+ * one extra byte to allow the caller to add a trailing '/'
+ */
+ path = (char *)apr_palloc(a, len1 + len2 + 3);
+ if (len1 == 0) {
+ *path = '/';
+ memcpy(path + 1, src2, len2 + 1);
+ }
+ else {
+ char *next;
+ memcpy(path, src1, len1);
+ next = path + len1;
+ if (next[-1] != '/') {
+ *next++ = '/';
+ }
+ memcpy(next, src2, len2 + 1);
+ }
+ return path;
+}
+
+/*
+ * Check for an absoluteURI syntax (see section 3.2 in RFC2068).
+ */
+AP_DECLARE(int) ap_is_url(const char *u)
+{
+ register int x;
+
+ for (x = 0; u[x] != ':'; x++) {
+ if ((!u[x]) ||
+ ((!apr_isalpha(u[x])) && (!apr_isdigit(u[x])) &&
+ (u[x] != '+') && (u[x] != '-') && (u[x] != '.'))) {
+ return 0;
+ }
+ }
+
+ return (x ? 1 : 0); /* If the first character is ':', it's broken, too */
+}
+
+AP_DECLARE(int) ap_ind(const char *s, char c)
+{
+ const char *p = ap_strchr_c(s, c);
+
+ if (p == NULL)
+ return -1;
+ return p - s;
+}
+
+AP_DECLARE(int) ap_rind(const char *s, char c)
+{
+ const char *p = ap_strrchr_c(s, c);
+
+ if (p == NULL)
+ return -1;
+ return p - s;
+}
+
+AP_DECLARE(void) ap_str_tolower(char *str)
+{
+ while (*str) {
+ *str = apr_tolower(*str);
+ ++str;
+ }
+}
+
+static char *find_fqdn(apr_pool_t *a, struct hostent *p)
+{
+ int x;
+
+ if (!strchr(p->h_name, '.')) {
+ if (p->h_aliases) {
+ for (x = 0; p->h_aliases[x]; ++x) {
+ if (strchr(p->h_aliases[x], '.') &&
+ (!strncasecmp(p->h_aliases[x], p->h_name,
+ strlen(p->h_name))))
+ return apr_pstrdup(a, p->h_aliases[x]);
+ }
+ }
+ return NULL;
+ }
+ return apr_pstrdup(a, (void *) p->h_name);
+}
+
+char *ap_get_local_host(apr_pool_t *a)
+{
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 256
+#endif
+ char str[MAXHOSTNAMELEN + 1];
+ char *server_hostname = NULL;
+ struct hostent *p;
+
+#ifdef BEOS_R5
+ if (gethostname(str, sizeof(str) - 1) == 0)
+#else
+ if (gethostname(str, sizeof(str) - 1) != 0)
+#endif
+ {
+ ap_log_perror(APLOG_MARK, APLOG_STARTUP | APLOG_WARNING, 0, a,
+ "%s: gethostname() failed to determine ServerName",
+ ap_server_argv0);
+ }
+ else
+ {
+ str[sizeof(str) - 1] = '\0';
+ /* TODO: Screaming for APR-ization */
+ if ((!(p = gethostbyname(str)))
+ || (!(server_hostname = find_fqdn(a, p)))) {
+ /* Recovery - return the default servername by IP: */
+ if (p && p->h_addr_list[0]) {
+ apr_snprintf(str, sizeof(str), "%pA", p->h_addr_list[0]);
+ server_hostname = apr_pstrdup(a, str);
+ /* We will drop through to report the IP-named server */
+ }
+ }
+ else {
+ /* Since we found a fdqn, return it with no logged message. */
+ return server_hostname;
+ }
+ }
+
+ if (!server_hostname)
+ server_hostname = apr_pstrdup(a, "127.0.0.1");
+
+ ap_log_perror(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0, a,
+ "%s: Could not determine the server's fully qualified "
+ "domain name, using %s for ServerName",
+ ap_server_argv0, server_hostname);
+
+ return server_hostname;
+}
+
+/* simple 'pool' alloc()ing glue to apr_base64.c
+ */
+AP_DECLARE(char *) ap_pbase64decode(apr_pool_t *p, const char *bufcoded)
+{
+ char *decoded;
+ int l;
+
+ decoded = (char *) apr_palloc(p, 1 + apr_base64_decode_len(bufcoded));
+ l = apr_base64_decode(decoded, bufcoded);
+ decoded[l] = '\0'; /* make binary sequence into string */
+
+ return decoded;
+}
+
+AP_DECLARE(char *) ap_pbase64encode(apr_pool_t *p, char *string)
+{
+ char *encoded;
+ int l = strlen(string);
+
+ encoded = (char *) apr_palloc(p, 1 + apr_base64_encode_len(l));
+ l = apr_base64_encode(encoded, string, l);
+ encoded[l] = '\0'; /* make binary sequence into string */
+
+ return encoded;
+}
+
+/* we want to downcase the type/subtype for comparison purposes
+ * but nothing else because ;parameter=foo values are case sensitive.
+ * XXX: in truth we want to downcase parameter names... but really,
+ * apache has never handled parameters and such correctly. You
+ * also need to compress spaces and such to be able to compare
+ * properly. -djg
+ */
+AP_DECLARE(void) ap_content_type_tolower(char *str)
+{
+ char *semi;
+
+ semi = strchr(str, ';');
+ if (semi) {
+ *semi = '\0';
+ }
+ while (*str) {
+ *str = apr_tolower(*str);
+ ++str;
+ }
+ if (semi) {
+ *semi = ';';
+ }
+}
+
+/*
+ * Given a string, replace any bare " with \" .
+ */
+AP_DECLARE(char *) ap_escape_quotes(apr_pool_t *p, const char *instring)
+{
+ int newlen = 0;
+ const char *inchr = instring;
+ char *outchr, *outstring;
+
+ /*
+ * Look through the input string, jogging the length of the output
+ * string up by an extra byte each time we find an unescaped ".
+ */
+ while (*inchr != '\0') {
+ newlen++;
+ if (*inchr == '"') {
+ newlen++;
+ }
+ /*
+ * If we find a slosh, and it's not the last byte in the string,
+ * it's escaping something - advance past both bytes.
+ */
+ if ((*inchr == '\\') && (inchr[1] != '\0')) {
+ inchr++;
+ newlen++;
+ }
+ inchr++;
+ }
+ outstring = apr_palloc(p, newlen + 1);
+ inchr = instring;
+ outchr = outstring;
+ /*
+ * Now copy the input string to the output string, inserting a slosh
+ * in front of every " that doesn't already have one.
+ */
+ while (*inchr != '\0') {
+ if ((*inchr == '\\') && (inchr[1] != '\0')) {
+ *outchr++ = *inchr++;
+ *outchr++ = *inchr++;
+ }
+ if (*inchr == '"') {
+ *outchr++ = '\\';
+ }
+ if (*inchr != '\0') {
+ *outchr++ = *inchr++;
+ }
+ }
+ *outchr = '\0';
+ return outstring;
+}