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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_PROCESS_H
+#include <process.h> /* for getpid() on Win32 */
+#endif
+#if APR_HAVE_NETDB_H
+#include <netdb.h> /* for gethostbyname() */
+#endif
+
+#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 "http_core.h"
+#include "util_ebcdic.h"
+#include "util_varbuf.h"
+
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif
+#ifdef HAVE_GRP_H
+#include <grp.h>
+#endif
+#ifdef HAVE_SYS_LOADAVG_H
+#include <sys/loadavg.h>
+#endif
+
+#include "ap_mpm.h"
+
+/* 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 char)(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 == '\\'))
+#define SLASHES "/\\"
+#else
+#define IS_SLASH(s) (s == '/')
+#define SLASHES "/"
+#endif
+
+/* we know core's module_index is 0 */
+#undef APLOG_MODULE_INDEX
+#define APLOG_MODULE_INDEX AP_CORE_MODULE_INDEX
+
+/*
+ * 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_pstrmemdup(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-2.1 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)
+{
+ int x;
+
+ for (x = 0; str[x]; x++)
+ if ((str[x] == '*') || (str[x] == '?'))
+ return 1;
+ return 0;
+}
+
+/*
+ * Here's a pool-based interface to the POSIX-esque ap_regcomp().
+ * Note that we return ap_regex_t instead of being passed one.
+ * The reason is that if you use an already-used ap_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)
+{
+ ap_regfree((ap_regex_t *) preg);
+ return APR_SUCCESS;
+}
+
+AP_DECLARE(ap_regex_t *) ap_pregcomp(apr_pool_t *p, const char *pattern,
+ int cflags)
+{
+ ap_regex_t *preg = apr_palloc(p, sizeof *preg);
+ int err = ap_regcomp(preg, pattern, cflags);
+ if (err) {
+ if (err == AP_REG_ESPACE)
+ ap_abort_on_oom();
+ 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, ap_regex_t *reg)
+{
+ ap_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;
+}
+
+/* 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 ap_regex_t.
+ *
+ * nmatch must be <=AP_MAX_REG_MATCH (10).
+ *
+ * input should be the string with the $-expressions, source should be the
+ * string that was matched against.
+ *
+ * It returns the substituted string, or NULL if a vbuf is used.
+ * On errors, returns the orig string.
+ *
+ * Parts of this code are based on Henry Spencer's regsub(), from his
+ * AT&T V8 regexp package.
+ */
+
+static apr_status_t regsub_core(apr_pool_t *p, char **result,
+ struct ap_varbuf *vb, const char *input,
+ const char *source, apr_size_t nmatch,
+ ap_regmatch_t pmatch[], apr_size_t maxlen)
+{
+ const char *src = input;
+ char *dst;
+ char c;
+ apr_size_t no;
+ apr_size_t len = 0;
+
+ AP_DEBUG_ASSERT((result && p && !vb) || (vb && !p && !result));
+ if (!source || nmatch>AP_MAX_REG_MATCH)
+ return APR_EINVAL;
+ if (!nmatch) {
+ len = strlen(src);
+ if (maxlen > 0 && len >= maxlen)
+ return APR_ENOMEM;
+ if (!vb) {
+ *result = apr_pstrmemdup(p, src, len);
+ return APR_SUCCESS;
+ }
+ else {
+ ap_varbuf_strmemcat(vb, src, len);
+ return APR_SUCCESS;
+ }
+ }
+
+ /* First pass, find the size */
+ while ((c = *src++) != '\0') {
+ if (c == '$' && apr_isdigit(*src))
+ no = *src++ - '0';
+ else
+ no = AP_MAX_REG_MATCH;
+
+ if (no >= AP_MAX_REG_MATCH) { /* Ordinary character. */
+ if (c == '\\' && *src)
+ src++;
+ len++;
+ }
+ else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) {
+ if (APR_SIZE_MAX - len <= pmatch[no].rm_eo - pmatch[no].rm_so)
+ return APR_ENOMEM;
+ len += pmatch[no].rm_eo - pmatch[no].rm_so;
+ }
+
+ }
+
+ if (len >= maxlen && maxlen > 0)
+ return APR_ENOMEM;
+
+ if (!vb) {
+ *result = dst = apr_palloc(p, len + 1);
+ }
+ else {
+ if (vb->strlen == AP_VARBUF_UNKNOWN)
+ vb->strlen = strlen(vb->buf);
+ ap_varbuf_grow(vb, vb->strlen + len);
+ dst = vb->buf + vb->strlen;
+ vb->strlen += len;
+ }
+
+ /* Now actually fill in the string */
+
+ src = input;
+
+ while ((c = *src++) != '\0') {
+ if (c == '$' && apr_isdigit(*src))
+ no = *src++ - '0';
+ else
+ no = AP_MAX_REG_MATCH;
+
+ if (no >= AP_MAX_REG_MATCH) { /* Ordinary character. */
+ if (c == '\\' && *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 APR_SUCCESS;
+}
+
+#ifndef AP_PREGSUB_MAXLEN
+#define AP_PREGSUB_MAXLEN (HUGE_STRING_LEN * 8)
+#endif
+AP_DECLARE(char *) ap_pregsub(apr_pool_t *p, const char *input,
+ const char *source, apr_size_t nmatch,
+ ap_regmatch_t pmatch[])
+{
+ char *result;
+ apr_status_t rc = regsub_core(p, &result, NULL, input, source, nmatch,
+ pmatch, AP_PREGSUB_MAXLEN);
+ if (rc != APR_SUCCESS)
+ result = NULL;
+ return result;
+}
+
+AP_DECLARE(apr_status_t) ap_pregsub_ex(apr_pool_t *p, char **result,
+ const char *input, const char *source,
+ apr_size_t nmatch, ap_regmatch_t pmatch[],
+ apr_size_t maxlen)
+{
+ apr_status_t rc = regsub_core(p, result, NULL, input, source, nmatch,
+ pmatch, maxlen);
+ if (rc != APR_SUCCESS)
+ *result = NULL;
+ return rc;
+}
+
+/*
+ * 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]))) {
+ 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 ap_directory_walk in server/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_pstrmemdup(p, s, l);
+
+ return (d);
+}
+
+
+AP_DECLARE(int) ap_count_dirs(const char *path)
+{
+ 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 = apr_pstrmemdup(atrans, *line, len);
+
+ 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 = apr_pstrmemdup(atrans, *line, len);
+
+ 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) {
+ apr_size_t len = strlen(*line);
+ res = apr_pstrmemdup(atrans, *line, len);
+ *line += len;
+ return res;
+ }
+
+ res = apr_pstrmemdup(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 + 1);
+ 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 (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[1] == '\\')) {
+ 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 (apr_isspace(*strend))
+ ++strend;
+ *line = strend;
+ return res;
+}
+
+AP_DECLARE(char *) ap_getword_conf2_nc(apr_pool_t *p, char **line)
+{
+ return ap_getword_conf2(p, (const char **) line);
+}
+
+AP_DECLARE(char *) ap_getword_conf2(apr_pool_t *p, const char **line)
+{
+ const char *str = *line, *strend;
+ char *res;
+ char quote;
+ int count = 1;
+
+ while (apr_isspace(*str))
+ ++str;
+
+ if (!*str) {
+ *line = str;
+ return "";
+ }
+
+ if ((quote = *str) == '"' || quote == '\'')
+ return ap_getword_conf(p, line);
+
+ if (quote == '{') {
+ strend = str + 1;
+ while (*strend) {
+ if (*strend == '}' && !--count)
+ break;
+ if (*strend == '{')
+ ++count;
+ if (*strend == '\\' && strend[1] && strend[1] == '\\') {
+ ++strend;
+ }
+ ++strend;
+ }
+ res = substring_conf(p, str + 1, strend - str - 1, 0);
+
+ if (*strend == '}')
+ ++strend;
+ }
+ else {
+ strend = str;
+ while (*strend && !apr_isspace(*strend))
+ ++strend;
+
+ res = substring_conf(p, str, strend - str, 0);
+ }
+
+ while (apr_isspace(*strend))
+ ++strend;
+ *line = strend;
+ return res;
+}
+
+AP_DECLARE(int) ap_cfg_closefile(ap_configfile_t *cfp)
+{
+#ifdef DEBUG
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, NULL, APLOGNO(00551)
+ "Done with config file %s", cfp->name);
+#endif
+ return (cfp->close == NULL) ? 0 : cfp->close(cfp->param);
+}
+
+/* we can't use apr_file_* directly because of linking issues on Windows */
+static apr_status_t cfg_close(void *param)
+{
+ return apr_file_close(param);
+}
+
+static apr_status_t cfg_getch(char *ch, void *param)
+{
+ return apr_file_getc(ch, param);
+}
+
+static apr_status_t cfg_getstr(void *buf, apr_size_t bufsiz, void *param)
+{
+ return apr_file_gets(buf, bufsiz, param);
+}
+
+/* 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, APLOGNO(00552)
+ "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, APLOGNO(00553)
+ "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_filepath_name_get(name), "nul") != 0) {
+#else
+ strcmp(name, "/dev/null") != 0) {
+#endif /* WIN32 || OS2 */
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, NULL, APLOGNO(00554)
+ "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 = cfg_getch;
+ new_cfg->getstr = cfg_getstr;
+ new_cfg->close = 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,
+ apr_status_t (*getc_func) (char *ch, void *param),
+ apr_status_t (*gets_func) (void *buf, apr_size_t bufsize, void *param),
+ apr_status_t (*close_func) (void *param))
+{
+ ap_configfile_t *new_cfg = apr_palloc(p, sizeof(*new_cfg));
+ new_cfg->param = param;
+ new_cfg->name = descr;
+ new_cfg->getch = getc_func;
+ new_cfg->getstr = gets_func;
+ new_cfg->close = close_func;
+ new_cfg->line_number = 0;
+ return new_cfg;
+}
+
+/* Read one character from a configfile_t */
+AP_DECLARE(apr_status_t) ap_cfg_getc(char *ch, ap_configfile_t *cfp)
+{
+ apr_status_t rc = cfp->getch(ch, cfp->param);
+ if (rc == APR_SUCCESS && *ch == LF)
+ ++cfp->line_number;
+ return rc;
+}
+
+AP_DECLARE(const char *) ap_pcfg_strerror(apr_pool_t *p, ap_configfile_t *cfp,
+ apr_status_t rc)
+{
+ if (rc == APR_SUCCESS)
+ return NULL;
+
+ if (rc == APR_ENOSPC)
+ return apr_psprintf(p, "Error reading %s at line %d: Line too long",
+ cfp->name, cfp->line_number);
+
+ return apr_psprintf(p, "Error reading %s at line %d: %pm",
+ cfp->name, cfp->line_number, &rc);
+}
+
+/* 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 */
+static apr_status_t ap_cfg_getline_core(char *buf, apr_size_t bufsize,
+ apr_size_t offset, ap_configfile_t *cfp)
+{
+ apr_status_t rc;
+ /* If a "get string" function is defined, use it */
+ if (cfp->getstr != NULL) {
+ char *cp;
+ char *cbuf = buf + offset;
+ apr_size_t cbufsize = bufsize - offset;
+
+ while (1) {
+ ++cfp->line_number;
+ rc = cfp->getstr(cbuf, cbufsize, cfp->param);
+ if (rc == APR_EOF) {
+ if (cbuf != buf + offset) {
+ *cbuf = '\0';
+ break;
+ }
+ else {
+ return APR_EOF;
+ }
+ }
+ if (rc != APR_SUCCESS) {
+ return rc;
+ }
+
+ /*
+ * check for line continuation,
+ * i.e. match [^\\]\\[\r]\n only
+ */
+ cp = cbuf;
+ cp += strlen(cp);
+ if (cp > buf && cp[-1] == LF) {
+ cp--;
+ if (cp > buf && cp[-1] == CR)
+ cp--;
+ if (cp > buf && cp[-1] == '\\') {
+ cp--;
+ /*
+ * line continuation requested -
+ * then remove backslash and continue
+ */
+ cbufsize -= (cp-cbuf);
+ cbuf = cp;
+ continue;
+ }
+ }
+ else if (cp - buf >= bufsize - 1) {
+ return APR_ENOSPC;
+ }
+ break;
+ }
+ } else {
+ /* No "get string" function defined; read character by character */
+ apr_size_t i = offset;
+
+ if (bufsize < 2) {
+ /* too small, assume caller is crazy */
+ return APR_EINVAL;
+ }
+ buf[offset] = '\0';
+
+ while (1) {
+ char c;
+ rc = cfp->getch(&c, cfp->param);
+ if (rc == APR_EOF) {
+ if (i > offset)
+ break;
+ else
+ return APR_EOF;
+ }
+ if (rc != APR_SUCCESS)
+ return rc;
+ if (c == LF) {
+ ++cfp->line_number;
+ /* check for line continuation */
+ if (i > 0 && buf[i-1] == '\\') {
+ i--;
+ continue;
+ }
+ else {
+ break;
+ }
+ }
+ buf[i] = c;
+ ++i;
+ if (i >= bufsize - 1) {
+ return APR_ENOSPC;
+ }
+ }
+ buf[i] = '\0';
+ }
+ return APR_SUCCESS;
+}
+
+static int cfg_trim_line(char *buf)
+{
+ char *start, *end;
+ /*
+ * Leading and trailing white space is eliminated completely
+ */
+ start = buf;
+ while (apr_isspace(*start))
+ ++start;
+ /* blast trailing whitespace */
+ end = &start[strlen(start)];
+ while (--end >= start && apr_isspace(*end))
+ *end = '\0';
+ /* Zap leading whitespace by shifting */
+ if (start != buf)
+ memmove(buf, start, end - start + 2);
+#ifdef DEBUG_CFG_LINES
+ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, NULL, APLOGNO(00555) "Read config: '%s'", buf);
+#endif
+ return end - start + 1;
+}
+
+/* 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(apr_status_t) ap_cfg_getline(char *buf, apr_size_t bufsize,
+ ap_configfile_t *cfp)
+{
+ apr_status_t rc = ap_cfg_getline_core(buf, bufsize, 0, cfp);
+ if (rc == APR_SUCCESS)
+ cfg_trim_line(buf);
+ return rc;
+}
+
+AP_DECLARE(apr_status_t) ap_varbuf_cfg_getline(struct ap_varbuf *vb,
+ ap_configfile_t *cfp,
+ apr_size_t max_len)
+{
+ apr_status_t rc;
+ apr_size_t new_len;
+ vb->strlen = 0;
+ *vb->buf = '\0';
+
+ if (vb->strlen == AP_VARBUF_UNKNOWN)
+ vb->strlen = strlen(vb->buf);
+ if (vb->avail - vb->strlen < 3) {
+ new_len = vb->avail * 2;
+ if (new_len > max_len)
+ new_len = max_len;
+ else if (new_len < 3)
+ new_len = 3;
+ ap_varbuf_grow(vb, new_len);
+ }
+
+ for (;;) {
+ rc = ap_cfg_getline_core(vb->buf, vb->avail, vb->strlen, cfp);
+ if (rc == APR_ENOSPC || rc == APR_SUCCESS)
+ vb->strlen += strlen(vb->buf + vb->strlen);
+ if (rc != APR_ENOSPC)
+ break;
+ if (vb->avail >= max_len)
+ return APR_ENOSPC;
+ new_len = vb->avail * 2;
+ if (new_len > max_len)
+ new_len = max_len;
+ ap_varbuf_grow(vb, new_len);
+ --cfp->line_number;
+ }
+ if (vb->strlen > max_len)
+ return APR_ENOSPC;
+ if (rc == APR_SUCCESS)
+ vb->strlen = cfg_trim_line(vb->buf);
+ return rc;
+}
+
+/* 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;
+}
+
+typedef enum ap_etag_e {
+ AP_ETAG_NONE,
+ AP_ETAG_WEAK,
+ AP_ETAG_STRONG
+} ap_etag_e;
+
+/* 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.
+ */
+static int find_list_item(apr_pool_t *p, const char *line,
+ const char *tok, ap_etag_e type)
+{
+ 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;
+ }
+ if (type == AP_ETAG_STRONG && *tok != '\"') {
+ return 0;
+ }
+ if (type == AP_ETAG_WEAK) {
+ if (*tok == 'W' && (*(tok+1)) == '/' && (*(tok+2)) == '\"') {
+ tok += 2;
+ }
+ else if (*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;
+ }
+
+ /* Account for strong or weak Etags, depending on our search */
+ if (type == AP_ETAG_STRONG && *ptr != '\"') {
+ break;
+ }
+ if (type == AP_ETAG_WEAK) {
+ if (*ptr == 'W' && (*(ptr+1)) == '/' && (*(ptr+2)) == '\"') {
+ ptr += 2;
+ }
+ else if (*ptr != '\"') {
+ break;
+ }
+ }
+
+ 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
+ && (apr_tolower(*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;
+}
+
+/* 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)
+{
+ return find_list_item(p, line, tok, AP_ETAG_NONE);
+}
+
+/* Find a strong Etag in canonical form (lowercase, no extra spaces) within
+ * an HTTP field value list. Returns 1 if found, 0 if not found.
+ */
+AP_DECLARE(int) ap_find_etag_strong(apr_pool_t *p, const char *line,
+ const char *tok)
+{
+ return find_list_item(p, line, tok, AP_ETAG_STRONG);
+}
+
+/* Find a weak ETag in canonical form (lowercase, no extra spaces) within
+ * an HTTP field value list. Returns 1 if found, 0 if not found.
+ */
+AP_DECLARE(int) ap_find_etag_weak(apr_pool_t *p, const char *line,
+ const char *tok)
+{
+ return find_list_item(p, line, tok, AP_ETAG_WEAK);
+}
+
+/* Grab a list of tokens of the format 1#token (from RFC7230) */
+AP_DECLARE(const char *) ap_parse_token_list_strict(apr_pool_t *p,
+ const char *str_in,
+ apr_array_header_t **tokens,
+ int skip_invalid)
+{
+ int in_leading_space = 1;
+ int in_trailing_space = 0;
+ int string_end = 0;
+ const char *tok_begin;
+ const char *cur;
+
+ if (!str_in) {
+ return NULL;
+ }
+
+ tok_begin = cur = str_in;
+
+ while (!string_end) {
+ const unsigned char c = (unsigned char)*cur;
+
+ if (!TEST_CHAR(c, T_HTTP_TOKEN_STOP)) {
+ /* Non-separator character; we are finished with leading
+ * whitespace. We must never have encountered any trailing
+ * whitespace before the delimiter (comma) */
+ in_leading_space = 0;
+ if (in_trailing_space) {
+ return "Encountered illegal whitespace in token";
+ }
+ }
+ else if (c == ' ' || c == '\t') {
+ /* "Linear whitespace" only includes ASCII CRLF, space, and tab;
+ * we can't get a CRLF since headers are split on them already,
+ * so only look for a space or a tab */
+ if (in_leading_space) {
+ /* We're still in leading whitespace */
+ ++tok_begin;
+ }
+ else {
+ /* We must be in trailing whitespace */
+ ++in_trailing_space;
+ }
+ }
+ else if (c == ',' || c == '\0') {
+ if (!in_leading_space) {
+ /* If we're out of the leading space, we know we've read some
+ * characters of a token */
+ if (*tokens == NULL) {
+ *tokens = apr_array_make(p, 4, sizeof(char *));
+ }
+ APR_ARRAY_PUSH(*tokens, char *) =
+ apr_pstrmemdup((*tokens)->pool, tok_begin,
+ (cur - tok_begin) - in_trailing_space);
+ }
+ /* We're allowed to have null elements, just don't add them to the
+ * array */
+
+ tok_begin = cur + 1;
+ in_leading_space = 1;
+ in_trailing_space = 0;
+ string_end = (c == '\0');
+ }
+ else {
+ /* Encountered illegal separator char */
+ if (skip_invalid) {
+ /* Skip to the next separator */
+ const char *temp;
+ temp = ap_strchr_c(cur, ',');
+ if(!temp) {
+ temp = ap_strchr_c(cur, '\0');
+ }
+
+ /* Act like we haven't seen a token so we reset */
+ cur = temp - 1;
+ in_leading_space = 1;
+ in_trailing_space = 0;
+ }
+ else {
+ return apr_psprintf(p, "Encountered illegal separator "
+ "'\\x%.2x'", (unsigned int)c);
+ }
+ }
+
+ ++cur;
+ }
+
+ return NULL;
+}
+
+/* Scan a string for HTTP VCHAR/obs-text characters including HT and SP
+ * (as used in header values, for example, in RFC 7230 section 3.2)
+ * returning the pointer to the first non-HT ASCII ctrl character.
+ */
+AP_DECLARE(const char *) ap_scan_http_field_content(const char *ptr)
+{
+ for ( ; !TEST_CHAR(*ptr, T_HTTP_CTRLS); ++ptr) ;
+
+ return ptr;
+}
+
+/* Scan a string for HTTP token characters, returning the pointer to
+ * the first non-token character.
+ */
+AP_DECLARE(const char *) ap_scan_http_token(const char *ptr)
+{
+ for ( ; !TEST_CHAR(*ptr, T_HTTP_TOKEN_STOP); ++ptr) ;
+
+ return ptr;
+}
+
+/* Scan a string for visible ASCII (0x21-0x7E) or obstext (0x80+)
+ * and return a pointer to the first ctrl/space character encountered.
+ */
+AP_DECLARE(const char *) ap_scan_vchar_obstext(const char *ptr)
+{
+ for ( ; TEST_CHAR(*ptr, T_VCHAR_OBSTEXT); ++ptr) ;
+
+ return ptr;
+}
+
+/* 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;
+
+ /* Find first non-white byte */
+
+ while (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;
+ }
+
+ token = apr_pstrmemdup(p, tok_start, ptr - tok_start);
+
+ /* Advance accept_line pointer to the next non-white byte */
+
+ while (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 */
+ while (*s && 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)
+{
+ 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, leaving reserved characters intact.
+ * Returns 0 on success, non-zero on error
+ * Failure is due to
+ * bad % escape returns HTTP_BAD_REQUEST
+ *
+ * decoding %00 or a forbidden character returns HTTP_NOT_FOUND
+ */
+
+static int unescape_url(char *url, const char *forbid, const char *reserved)
+{
+ 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')
+ || (forbid && ap_strchr_c(forbid, decoded))) {
+ badpath = 1;
+ *x = decoded;
+ y += 2;
+ }
+ else if (reserved && ap_strchr_c(reserved, decoded)) {
+ *x++ = *y++;
+ *x++ = *y++;
+ *x = *y;
+ }
+ 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(int) ap_unescape_url(char *url)
+{
+ /* Traditional */
+ return unescape_url(url, SLASHES, NULL);
+}
+AP_DECLARE(int) ap_unescape_url_keep2f(char *url, int decode_slashes)
+{
+ /* AllowEncodedSlashes (corrected) */
+ if (decode_slashes) {
+ /* no chars reserved */
+ return unescape_url(url, NULL, NULL);
+ } else {
+ /* reserve (do not decode) encoded slashes */
+ return unescape_url(url, NULL, SLASHES);
+ }
+}
+#ifdef NEW_APIS
+/* IFDEF these out until they've been thought through.
+ * Just a germ of an API extension for now
+ */
+AP_DECLARE(int) ap_unescape_url_proxy(char *url)
+{
+ /* leave RFC1738 reserved characters intact, * so proxied URLs
+ * don't get mangled. Where does that leave encoded '&' ?
+ */
+ return unescape_url(url, NULL, "/;?");
+}
+AP_DECLARE(int) ap_unescape_url_reserved(char *url, const char *reserved)
+{
+ return unescape_url(url, NULL, reserved);
+}
+#endif
+
+AP_DECLARE(int) ap_unescape_urlencoded(char *query)
+{
+ char *slider;
+
+ /* replace plus with a space */
+ if (query) {
+ for (slider = query; *slider; slider++) {
+ if (*slider == '+') {
+ *slider = ' ';
+ }
+ }
+ }
+
+ /* unescape everything else */
+ return unescape_url(query, NULL, NULL);
+}
+
+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);
+ }
+}
+
+AP_DECLARE(int) ap_unescape_all(char *url)
+{
+ return unescape_url(url, NULL, NULL);
+}
+
+/* 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 prefix,
+ unsigned char *where)
+{
+#if APR_CHARSET_EBCDIC
+ what = apr_xlate_conv_byte(ap_hdrs_to_ascii, (unsigned char)what);
+#endif /*APR_CHARSET_EBCDIC*/
+ *where++ = prefix;
+ *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_buffer(char *copy, const char *segment)
+{
+ 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_escape_path_segment(apr_pool_t *p, const char *segment)
+{
+ return ap_escape_path_segment_buffer(apr_palloc(p, 3 * strlen(segment) + 1), segment);
+}
+
+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_DECLARE(char *) ap_escape_urlencoded_buffer(char *copy, const char *buffer)
+{
+ const unsigned char *s = (const unsigned char *)buffer;
+ unsigned char *d = (unsigned char *)copy;
+ unsigned c;
+
+ while ((c = *s)) {
+ if (TEST_CHAR(c, T_ESCAPE_URLENCODED)) {
+ d = c2x(c, '%', d);
+ }
+ else if (c == ' ') {
+ *d++ = '+';
+ }
+ else {
+ *d++ = c;
+ }
+ ++s;
+ }
+ *d = '\0';
+ return copy;
+}
+
+AP_DECLARE(char *) ap_escape_urlencoded(apr_pool_t *p, const char *buffer)
+{
+ return ap_escape_urlencoded_buffer(apr_palloc(p, 3 * strlen(buffer) + 1), buffer);
+}
+
+/* ap_escape_uri is now a macro for os_escape_path */
+
+AP_DECLARE(char *) ap_escape_html2(apr_pool_t *p, const char *s, int toasc)
+{
+ 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;
+ else if (toasc && !apr_isascii(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 if (toasc && !apr_isascii(s[i])) {
+ char *esc = apr_psprintf(p, "&#%3.3d;", (unsigned char)s[i]);
+ memcpy(&x[j], esc, 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;
+ apr_size_t length, escapes = 0;
+
+ if (!str) {
+ return NULL;
+ }
+
+ /* Compute how many characters need to be escaped */
+ s = (const unsigned char *)str;
+ for (; *s; ++s) {
+ if (TEST_CHAR(*s, T_ESCAPE_LOGITEM)) {
+ escapes++;
+ }
+ }
+
+ /* Compute the length of the input string, including NULL */
+ length = s - (const unsigned char *)str + 1;
+
+ /* Fast path: nothing to escape */
+ if (escapes == 0) {
+ return apr_pmemdup(p, str, length);
+ }
+
+ /* Each escaped character needs up to 3 extra bytes (0 --> \x00) */
+ ret = apr_palloc(p, length + 3 * escapes);
+ 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, 'x', d);
+ 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, 'x', d);
+ d += 3;
+ }
+ }
+ else {
+ *d++ = *s;
+ }
+ }
+ *d = '\0';
+
+ return (d - (unsigned char *)dest);
+}
+
+AP_DECLARE(void) ap_bin2hex(const void *src, apr_size_t srclen, char *dest)
+{
+ const unsigned char *in = src;
+ apr_size_t i;
+
+ for (i = 0; i < srclen; i++) {
+ *dest++ = c2x_table[in[i] >> 4];
+ *dest++ = c2x_table[in[i] & 0xf];
+ }
+ *dest = '\0';
+}
+
+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_stat(&finfo, path, APR_FINFO_LINK | 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)
+{
+ int x;
+
+ for (x = 0; u[x] != ':'; x++) {
+ if ((!u[x]) ||
+ ((!apr_isalnum(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;
+ }
+}
+
+AP_DECLARE(void) ap_str_toupper(char *str)
+{
+ while (*str) {
+ *str = apr_toupper(*str);
+ ++str;
+ }
+}
+
+/*
+ * We must return a FQDN
+ */
+char *ap_get_local_host(apr_pool_t *a)
+{
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 256
+#endif
+ char str[MAXHOSTNAMELEN + 1];
+ char *server_hostname = NULL;
+ apr_sockaddr_t *sockaddr;
+ char *hostname;
+
+ if (apr_gethostname(str, sizeof(str) - 1, a) != APR_SUCCESS) {
+ ap_log_perror(APLOG_MARK, APLOG_STARTUP | APLOG_WARNING, 0, a, APLOGNO(00556)
+ "%s: apr_gethostname() failed to determine ServerName",
+ ap_server_argv0);
+ } else {
+ str[sizeof(str) - 1] = '\0';
+ if (apr_sockaddr_info_get(&sockaddr, str, APR_UNSPEC, 0, 0, a) == APR_SUCCESS) {
+ if ( (apr_getnameinfo(&hostname, sockaddr, 0) == APR_SUCCESS) &&
+ (ap_strchr_c(hostname, '.')) ) {
+ server_hostname = apr_pstrdup(a, hostname);
+ return server_hostname;
+ } else if (ap_strchr_c(str, '.')) {
+ server_hostname = apr_pstrdup(a, str);
+ } else {
+ apr_sockaddr_ip_get(&hostname, sockaddr);
+ server_hostname = apr_pstrdup(a, hostname);
+ }
+ } else {
+ ap_log_perror(APLOG_MARK, APLOG_STARTUP | APLOG_WARNING, 0, a, APLOGNO(00557)
+ "%s: apr_sockaddr_info_get() failed for %s",
+ ap_server_argv0, str);
+ }
+ }
+
+ if (!server_hostname)
+ server_hostname = apr_pstrdup(a, "127.0.0.1");
+
+ ap_log_perror(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0, a, APLOGNO(00558)
+ "%s: Could not reliably determine the server's fully qualified "
+ "domain name, using %s. Set the 'ServerName' directive globally "
+ "to suppress this message",
+ 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';
+ }
+
+ ap_str_tolower(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;
+}
+
+/*
+ * Given a string, append the PID deliminated by delim.
+ * Usually used to create a pid-appended filepath name
+ * (eg: /a/b/foo -> /a/b/foo.6726). A function, and not
+ * a macro, to avoid unistd.h dependency
+ */
+AP_DECLARE(char *) ap_append_pid(apr_pool_t *p, const char *string,
+ const char *delim)
+{
+ return apr_psprintf(p, "%s%s%" APR_PID_T_FMT, string,
+ delim, getpid());
+
+}
+
+/**
+ * Parse a given timeout parameter string into an apr_interval_time_t value.
+ * The unit of the time interval is given as postfix string to the numeric
+ * string. Currently the following units are understood:
+ *
+ * ms : milliseconds
+ * s : seconds
+ * mi[n] : minutes
+ * h : hours
+ *
+ * If no unit is contained in the given timeout parameter the default_time_unit
+ * will be used instead.
+ * @param timeout_parameter The string containing the timeout parameter.
+ * @param timeout The timeout value to be returned.
+ * @param default_time_unit The default time unit to use if none is specified
+ * in timeout_parameter.
+ * @return Status value indicating whether the parsing was successful or not.
+ */
+AP_DECLARE(apr_status_t) ap_timeout_parameter_parse(
+ const char *timeout_parameter,
+ apr_interval_time_t *timeout,
+ const char *default_time_unit)
+{
+ char *endp;
+ const char *time_str;
+ apr_int64_t tout;
+
+ tout = apr_strtoi64(timeout_parameter, &endp, 10);
+ if (errno) {
+ return errno;
+ }
+ if (!endp || !*endp) {
+ time_str = default_time_unit;
+ }
+ else {
+ time_str = endp;
+ }
+
+ switch (*time_str) {
+ /* Time is in seconds */
+ case 's':
+ *timeout = (apr_interval_time_t) apr_time_from_sec(tout);
+ break;
+ case 'h':
+ /* Time is in hours */
+ *timeout = (apr_interval_time_t) apr_time_from_sec(tout * 3600);
+ break;
+ case 'm':
+ switch (*(++time_str)) {
+ /* Time is in milliseconds */
+ case 's':
+ *timeout = (apr_interval_time_t) tout * 1000;
+ break;
+ /* Time is in minutes */
+ case 'i':
+ *timeout = (apr_interval_time_t) apr_time_from_sec(tout * 60);
+ break;
+ default:
+ return APR_EGENERAL;
+ }
+ break;
+ default:
+ return APR_EGENERAL;
+ }
+ return APR_SUCCESS;
+}
+
+/**
+ * Determine if a request has a request body or not.
+ *
+ * @param r the request_rec of the request
+ * @return truth value
+ */
+AP_DECLARE(int) ap_request_has_body(request_rec *r)
+{
+ apr_off_t cl;
+ char *estr;
+ const char *cls;
+ int has_body;
+
+ has_body = (!r->header_only
+ && (r->kept_body
+ || apr_table_get(r->headers_in, "Transfer-Encoding")
+ || ( (cls = apr_table_get(r->headers_in, "Content-Length"))
+ && (apr_strtoff(&cl, cls, &estr, 10) == APR_SUCCESS)
+ && (!*estr)
+ && (cl > 0) )
+ )
+ );
+ return has_body;
+}
+
+AP_DECLARE_NONSTD(apr_status_t) ap_pool_cleanup_set_null(void *data_)
+{
+ void **ptr = (void **)data_;
+ *ptr = NULL;
+ return APR_SUCCESS;
+}
+
+AP_DECLARE(apr_status_t) ap_str2_alnum(const char *src, char *dest) {
+
+ for ( ; *src; src++, dest++)
+ {
+ if (!apr_isprint(*src))
+ *dest = 'x';
+ else if (!apr_isalnum(*src))
+ *dest = '_';
+ else
+ *dest = (char)*src;
+ }
+ *dest = '\0';
+ return APR_SUCCESS;
+
+}
+
+AP_DECLARE(apr_status_t) ap_pstr2_alnum(apr_pool_t *p, const char *src,
+ const char **dest)
+{
+ char *new = apr_palloc(p, strlen(src)+1);
+ if (!new)
+ return APR_ENOMEM;
+ *dest = new;
+ return ap_str2_alnum(src, new);
+}
+
+/**
+ * Read the body and parse any form found, which must be of the
+ * type application/x-www-form-urlencoded.
+ *
+ * Name/value pairs are returned in an array, with the names as
+ * strings with a maximum length of HUGE_STRING_LEN, and the
+ * values as bucket brigades. This allows values to be arbitrarily
+ * large.
+ *
+ * All url-encoding is removed from both the names and the values
+ * on the fly. The names are interpreted as strings, while the
+ * values are interpreted as blocks of binary data, that may
+ * contain the 0 character.
+ *
+ * In order to ensure that resource limits are not exceeded, a
+ * maximum size must be provided. If the sum of the lengths of
+ * the names and the values exceed this size, this function
+ * will return HTTP_REQUEST_ENTITY_TOO_LARGE.
+ *
+ * An optional number of parameters can be provided, if the number
+ * of parameters provided exceeds this amount, this function will
+ * return HTTP_REQUEST_ENTITY_TOO_LARGE. If this value is negative,
+ * no limit is imposed, and the number of parameters is in turn
+ * constrained by the size parameter above.
+ *
+ * This function honours any kept_body configuration, and the
+ * original raw request body will be saved to the kept_body brigade
+ * if so configured, just as ap_discard_request_body does.
+ *
+ * NOTE: File upload is not yet supported, but can be without change
+ * to the function call.
+ */
+
+/* form parsing stuff */
+typedef enum {
+ FORM_NORMAL,
+ FORM_AMP,
+ FORM_NAME,
+ FORM_VALUE,
+ FORM_PERCENTA,
+ FORM_PERCENTB,
+ FORM_ABORT
+} ap_form_type_t;
+
+AP_DECLARE(int) ap_parse_form_data(request_rec *r, ap_filter_t *f,
+ apr_array_header_t **ptr,
+ apr_size_t num, apr_size_t usize)
+{
+ apr_bucket_brigade *bb = NULL;
+ int seen_eos = 0;
+ char buffer[HUGE_STRING_LEN + 1];
+ const char *ct;
+ apr_size_t offset = 0;
+ apr_ssize_t size;
+ ap_form_type_t state = FORM_NAME, percent = FORM_NORMAL;
+ ap_form_pair_t *pair = NULL;
+ apr_array_header_t *pairs = apr_array_make(r->pool, 4, sizeof(ap_form_pair_t));
+ char escaped_char[2] = { 0 };
+
+ *ptr = pairs;
+
+ /* sanity check - we only support forms for now */
+ ct = apr_table_get(r->headers_in, "Content-Type");
+ if (!ct || strncasecmp("application/x-www-form-urlencoded", ct, 33)) {
+ return ap_discard_request_body(r);
+ }
+
+ if (usize > APR_SIZE_MAX >> 1)
+ size = APR_SIZE_MAX >> 1;
+ else
+ size = usize;
+
+ if (!f) {
+ f = r->input_filters;
+ }
+
+ bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
+ do {
+ apr_bucket *bucket = NULL, *last = NULL;
+
+ int rv = ap_get_brigade(f, bb, AP_MODE_READBYTES,
+ APR_BLOCK_READ, HUGE_STRING_LEN);
+ if (rv != APR_SUCCESS) {
+ apr_brigade_destroy(bb);
+ return ap_map_http_request_error(rv, HTTP_BAD_REQUEST);
+ }
+
+ for (bucket = APR_BRIGADE_FIRST(bb);
+ bucket != APR_BRIGADE_SENTINEL(bb);
+ last = bucket, bucket = APR_BUCKET_NEXT(bucket)) {
+ const char *data;
+ apr_size_t len, slide;
+
+ if (last) {
+ apr_bucket_delete(last);
+ }
+ if (APR_BUCKET_IS_EOS(bucket)) {
+ seen_eos = 1;
+ break;
+ }
+ if (bucket->length == 0) {
+ continue;
+ }
+
+ rv = apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ);
+ if (rv != APR_SUCCESS) {
+ apr_brigade_destroy(bb);
+ return HTTP_BAD_REQUEST;
+ }
+
+ slide = len;
+ while (state != FORM_ABORT && slide-- > 0 && size >= 0 && num != 0) {
+ char c = *data++;
+ if ('+' == c) {
+ c = ' ';
+ }
+ else if ('&' == c) {
+ state = FORM_AMP;
+ }
+ if ('%' == c) {
+ percent = FORM_PERCENTA;
+ continue;
+ }
+ if (FORM_PERCENTA == percent) {
+ escaped_char[0] = c;
+ percent = FORM_PERCENTB;
+ continue;
+ }
+ if (FORM_PERCENTB == percent) {
+ escaped_char[1] = c;
+ c = x2c(escaped_char);
+ percent = FORM_NORMAL;
+ }
+ switch (state) {
+ case FORM_AMP:
+ if (pair) {
+ const char *tmp = apr_pmemdup(r->pool, buffer, offset);
+ apr_bucket *b = apr_bucket_pool_create(tmp, offset, r->pool, r->connection->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(pair->value, b);
+ }
+ state = FORM_NAME;
+ pair = NULL;
+ offset = 0;
+ num--;
+ break;
+ case FORM_NAME:
+ if (offset < HUGE_STRING_LEN) {
+ if ('=' == c) {
+ buffer[offset] = 0;
+ offset = 0;
+ pair = (ap_form_pair_t *) apr_array_push(pairs);
+ pair->name = apr_pstrdup(r->pool, buffer);
+ pair->value = apr_brigade_create(r->pool, r->connection->bucket_alloc);
+ state = FORM_VALUE;
+ }
+ else {
+ buffer[offset++] = c;
+ size--;
+ }
+ }
+ else {
+ state = FORM_ABORT;
+ }
+ break;
+ case FORM_VALUE:
+ if (offset >= HUGE_STRING_LEN) {
+ const char *tmp = apr_pmemdup(r->pool, buffer, offset);
+ apr_bucket *b = apr_bucket_pool_create(tmp, offset, r->pool, r->connection->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(pair->value, b);
+ offset = 0;
+ }
+ buffer[offset++] = c;
+ size--;
+ break;
+ default:
+ break;
+ }
+ }
+
+ }
+
+ apr_brigade_cleanup(bb);
+ } while (!seen_eos);
+
+ if (FORM_ABORT == state || size < 0 || num == 0) {
+ return HTTP_REQUEST_ENTITY_TOO_LARGE;
+ }
+ else if (FORM_VALUE == state && pair && offset > 0) {
+ const char *tmp = apr_pmemdup(r->pool, buffer, offset);
+ apr_bucket *b = apr_bucket_pool_create(tmp, offset, r->pool, r->connection->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(pair->value, b);
+ }
+
+ return OK;
+
+}
+
+#define VARBUF_SMALL_SIZE 2048
+#define VARBUF_MAX_SIZE (APR_SIZE_MAX - 1 - \
+ APR_ALIGN_DEFAULT(sizeof(struct ap_varbuf_info)))
+
+struct ap_varbuf_info {
+ struct apr_memnode_t *node;
+ apr_allocator_t *allocator;
+};
+
+static apr_status_t varbuf_cleanup(void *info_)
+{
+ struct ap_varbuf_info *info = info_;
+ info->node->next = NULL;
+ apr_allocator_free(info->allocator, info->node);
+ return APR_SUCCESS;
+}
+
+const char nul = '\0';
+static char * const varbuf_empty = (char *)&nul;
+
+AP_DECLARE(void) ap_varbuf_init(apr_pool_t *p, struct ap_varbuf *vb,
+ apr_size_t init_size)
+{
+ vb->buf = varbuf_empty;
+ vb->avail = 0;
+ vb->strlen = AP_VARBUF_UNKNOWN;
+ vb->pool = p;
+ vb->info = NULL;
+
+ ap_varbuf_grow(vb, init_size);
+}
+
+AP_DECLARE(void) ap_varbuf_grow(struct ap_varbuf *vb, apr_size_t new_len)
+{
+ apr_memnode_t *new_node = NULL;
+ apr_allocator_t *allocator;
+ struct ap_varbuf_info *new_info;
+ char *new;
+
+ AP_DEBUG_ASSERT(vb->strlen == AP_VARBUF_UNKNOWN || vb->avail >= vb->strlen);
+
+ if (new_len <= vb->avail)
+ return;
+
+ if (new_len < 2 * vb->avail && vb->avail < VARBUF_MAX_SIZE/2) {
+ /* at least double the size, to avoid repeated reallocations */
+ new_len = 2 * vb->avail;
+ }
+ else if (new_len > VARBUF_MAX_SIZE) {
+ apr_abortfunc_t abort_fn = apr_pool_abort_get(vb->pool);
+ ap_assert(abort_fn != NULL);
+ abort_fn(APR_ENOMEM);
+ return;
+ }
+
+ new_len++; /* add space for trailing \0 */
+ if (new_len <= VARBUF_SMALL_SIZE) {
+ new_len = APR_ALIGN_DEFAULT(new_len);
+ new = apr_palloc(vb->pool, new_len);
+ if (vb->avail && vb->strlen != 0) {
+ AP_DEBUG_ASSERT(vb->buf != NULL);
+ AP_DEBUG_ASSERT(vb->buf != varbuf_empty);
+ if (new == vb->buf + vb->avail + 1) {
+ /* We are lucky: the new memory lies directly after our old
+ * buffer, we can now use both.
+ */
+ vb->avail += new_len;
+ return;
+ }
+ else {
+ /* copy up to vb->strlen + 1 bytes */
+ memcpy(new, vb->buf, vb->strlen == AP_VARBUF_UNKNOWN ?
+ vb->avail + 1 : vb->strlen + 1);
+ }
+ }
+ else {
+ *new = '\0';
+ }
+ vb->avail = new_len - 1;
+ vb->buf = new;
+ return;
+ }
+
+ /* The required block is rather larger. Use allocator directly so that
+ * the memory can be freed independently from the pool. */
+ allocator = apr_pool_allocator_get(vb->pool);
+ if (new_len <= VARBUF_MAX_SIZE)
+ new_node = apr_allocator_alloc(allocator,
+ new_len + APR_ALIGN_DEFAULT(sizeof(*new_info)));
+ if (!new_node) {
+ apr_abortfunc_t abort_fn = apr_pool_abort_get(vb->pool);
+ ap_assert(abort_fn != NULL);
+ abort_fn(APR_ENOMEM);
+ return;
+ }
+ new_info = (struct ap_varbuf_info *)new_node->first_avail;
+ new_node->first_avail += APR_ALIGN_DEFAULT(sizeof(*new_info));
+ new_info->node = new_node;
+ new_info->allocator = allocator;
+ new = new_node->first_avail;
+ AP_DEBUG_ASSERT(new_node->endp - new_node->first_avail >= new_len);
+ new_len = new_node->endp - new_node->first_avail;
+
+ if (vb->avail && vb->strlen != 0)
+ memcpy(new, vb->buf, vb->strlen == AP_VARBUF_UNKNOWN ?
+ vb->avail + 1 : vb->strlen + 1);
+ else
+ *new = '\0';
+ if (vb->info)
+ apr_pool_cleanup_run(vb->pool, vb->info, varbuf_cleanup);
+ apr_pool_cleanup_register(vb->pool, new_info, varbuf_cleanup,
+ apr_pool_cleanup_null);
+ vb->info = new_info;
+ vb->buf = new;
+ vb->avail = new_len - 1;
+}
+
+AP_DECLARE(void) ap_varbuf_strmemcat(struct ap_varbuf *vb, const char *str,
+ int len)
+{
+ if (len == 0)
+ return;
+ if (!vb->avail) {
+ ap_varbuf_grow(vb, len);
+ memcpy(vb->buf, str, len);
+ vb->buf[len] = '\0';
+ vb->strlen = len;
+ return;
+ }
+ if (vb->strlen == AP_VARBUF_UNKNOWN)
+ vb->strlen = strlen(vb->buf);
+ ap_varbuf_grow(vb, vb->strlen + len);
+ memcpy(vb->buf + vb->strlen, str, len);
+ vb->strlen += len;
+ vb->buf[vb->strlen] = '\0';
+}
+
+AP_DECLARE(void) ap_varbuf_free(struct ap_varbuf *vb)
+{
+ if (vb->info) {
+ apr_pool_cleanup_run(vb->pool, vb->info, varbuf_cleanup);
+ vb->info = NULL;
+ }
+ vb->buf = NULL;
+}
+
+AP_DECLARE(char *) ap_varbuf_pdup(apr_pool_t *p, struct ap_varbuf *buf,
+ const char *prepend, apr_size_t prepend_len,
+ const char *append, apr_size_t append_len,
+ apr_size_t *new_len)
+{
+ apr_size_t i = 0;
+ struct iovec vec[3];
+
+ if (prepend) {
+ vec[i].iov_base = (void *)prepend;
+ vec[i].iov_len = prepend_len;
+ i++;
+ }
+ if (buf->avail && buf->strlen) {
+ if (buf->strlen == AP_VARBUF_UNKNOWN)
+ buf->strlen = strlen(buf->buf);
+ vec[i].iov_base = (void *)buf->buf;
+ vec[i].iov_len = buf->strlen;
+ i++;
+ }
+ if (append) {
+ vec[i].iov_base = (void *)append;
+ vec[i].iov_len = append_len;
+ i++;
+ }
+ if (i)
+ return apr_pstrcatv(p, vec, i, new_len);
+
+ if (new_len)
+ *new_len = 0;
+ return "";
+}
+
+AP_DECLARE(apr_status_t) ap_varbuf_regsub(struct ap_varbuf *vb,
+ const char *input,
+ const char *source,
+ apr_size_t nmatch,
+ ap_regmatch_t pmatch[],
+ apr_size_t maxlen)
+{
+ return regsub_core(NULL, NULL, vb, input, source, nmatch, pmatch, maxlen);
+}
+
+static const char * const oom_message = "[crit] Memory allocation failed, "
+ "aborting process." APR_EOL_STR;
+
+AP_DECLARE(void) ap_abort_on_oom()
+{
+ int written, count = strlen(oom_message);
+ const char *buf = oom_message;
+ do {
+ written = write(STDERR_FILENO, buf, count);
+ if (written == count)
+ break;
+ if (written > 0) {
+ buf += written;
+ count -= written;
+ }
+ } while (written >= 0 || errno == EINTR);
+ abort();
+}
+
+AP_DECLARE(void *) ap_malloc(size_t size)
+{
+ void *p = malloc(size);
+ if (p == NULL && size != 0)
+ ap_abort_on_oom();
+ return p;
+}
+
+AP_DECLARE(void *) ap_calloc(size_t nelem, size_t size)
+{
+ void *p = calloc(nelem, size);
+ if (p == NULL && nelem != 0 && size != 0)
+ ap_abort_on_oom();
+ return p;
+}
+
+AP_DECLARE(void *) ap_realloc(void *ptr, size_t size)
+{
+ void *p = realloc(ptr, size);
+ if (p == NULL && size != 0)
+ ap_abort_on_oom();
+ return p;
+}
+
+AP_DECLARE(void) ap_get_sload(ap_sload_t *ld)
+{
+ int i, j, server_limit, thread_limit;
+ int ready = 0;
+ int busy = 0;
+ int total;
+ ap_generation_t mpm_generation;
+
+ /* preload errored fields, we overwrite */
+ ld->idle = -1;
+ ld->busy = -1;
+ ld->bytes_served = 0;
+ ld->access_count = 0;
+
+ ap_mpm_query(AP_MPMQ_GENERATION, &mpm_generation);
+ ap_mpm_query(AP_MPMQ_HARD_LIMIT_THREADS, &thread_limit);
+ ap_mpm_query(AP_MPMQ_HARD_LIMIT_DAEMONS, &server_limit);
+
+ for (i = 0; i < server_limit; i++) {
+ process_score *ps;
+ ps = ap_get_scoreboard_process(i);
+
+ for (j = 0; j < thread_limit; j++) {
+ int res;
+ worker_score *ws = NULL;
+ ws = &ap_scoreboard_image->servers[i][j];
+ res = ws->status;
+
+ if (!ps->quiescing && ps->pid) {
+ if (res == SERVER_READY && ps->generation == mpm_generation) {
+ ready++;
+ }
+ else if (res != SERVER_DEAD &&
+ res != SERVER_STARTING && res != SERVER_IDLE_KILL &&
+ ps->generation == mpm_generation) {
+ busy++;
+ }
+ }
+
+ if (ap_extended_status && !ps->quiescing && ps->pid) {
+ if (ws->access_count != 0
+ || (res != SERVER_READY && res != SERVER_DEAD)) {
+ ld->access_count += ws->access_count;
+ ld->bytes_served += ws->bytes_served;
+ }
+ }
+ }
+ }
+ total = busy + ready;
+ if (total) {
+ ld->idle = ready * 100 / total;
+ ld->busy = busy * 100 / total;
+ }
+}
+
+AP_DECLARE(void) ap_get_loadavg(ap_loadavg_t *ld)
+{
+ /* preload errored fields, we overwrite */
+ ld->loadavg = -1.0;
+ ld->loadavg5 = -1.0;
+ ld->loadavg15 = -1.0;
+
+#if HAVE_GETLOADAVG
+ {
+ double la[3];
+ int num;
+
+ num = getloadavg(la, 3);
+ if (num > 0) {
+ ld->loadavg = (float)la[0];
+ }
+ if (num > 1) {
+ ld->loadavg5 = (float)la[1];
+ }
+ if (num > 2) {
+ ld->loadavg15 = (float)la[2];
+ }
+ }
+#endif
+}
+
+AP_DECLARE(char *) ap_get_exec_line(apr_pool_t *p,
+ const char *cmd,
+ const char * const * argv)
+{
+ char buf[MAX_STRING_LEN];
+ apr_procattr_t *procattr;
+ apr_proc_t *proc;
+ apr_file_t *fp;
+ apr_size_t nbytes = 1;
+ char c;
+ int k;
+
+ if (apr_procattr_create(&procattr, p) != APR_SUCCESS)
+ return NULL;
+ if (apr_procattr_io_set(procattr, APR_FULL_BLOCK, APR_FULL_BLOCK,
+ APR_FULL_BLOCK) != APR_SUCCESS)
+ return NULL;
+ if (apr_procattr_dir_set(procattr,
+ ap_make_dirstr_parent(p, cmd)) != APR_SUCCESS)
+ return NULL;
+ if (apr_procattr_cmdtype_set(procattr, APR_PROGRAM) != APR_SUCCESS)
+ return NULL;
+ proc = apr_pcalloc(p, sizeof(apr_proc_t));
+ if (apr_proc_create(proc, cmd, argv, NULL, procattr, p) != APR_SUCCESS)
+ return NULL;
+ fp = proc->out;
+
+ if (fp == NULL)
+ return NULL;
+ /* XXX: we are reading 1 byte at a time here */
+ for (k = 0; apr_file_read(fp, &c, &nbytes) == APR_SUCCESS
+ && nbytes == 1 && (k < MAX_STRING_LEN-1) ; ) {
+ if (c == '\n' || c == '\r')
+ break;
+ buf[k++] = c;
+ }
+ buf[k] = '\0';
+ apr_file_close(fp);
+
+ return apr_pstrndup(p, buf, k);
+}
+
+AP_DECLARE(int) ap_array_str_index(const apr_array_header_t *array,
+ const char *s,
+ int start)
+{
+ if (start >= 0) {
+ int i;
+
+ for (i = start; i < array->nelts; i++) {
+ const char *p = APR_ARRAY_IDX(array, i, const char *);
+ if (!strcmp(p, s)) {
+ return i;
+ }
+ }
+ }
+
+ return -1;
+}
+
+AP_DECLARE(int) ap_array_str_contains(const apr_array_header_t *array,
+ const char *s)
+{
+ return (ap_array_str_index(array, s, 0) >= 0);
+}
+
+#if !APR_CHARSET_EBCDIC
+/*
+ * Our own known-fast translation table for casecmp by character.
+ * Only ASCII alpha characters 41-5A are folded to 61-7A, other
+ * octets (such as extended latin alphabetics) are never case-folded.
+ * NOTE: Other than Alpha A-Z/a-z, each code point is unique!
+ */
+static const short ucharmap[] = {
+ 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
+ 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+ 0x40, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
+ 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
+ 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
+ 'x', 'y', 'z', 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
+ 0x60, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
+ 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
+ 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
+ 'x', 'y', 'z', 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
+ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
+ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
+ 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
+ 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
+ 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
+ 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
+ 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
+ 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+ 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+ 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+ 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+ 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
+};
+#else /* APR_CHARSET_EBCDIC */
+/*
+ * Derived from apr-iconv/ccs/cp037.c for EBCDIC case comparison,
+ * provides unique identity of every char value (strict ISO-646
+ * conformance, arbitrary election of an ISO-8859-1 ordering, and
+ * very arbitrary control code assignments into C1 to achieve
+ * identity and a reversible mapping of code points),
+ * then folding the equivalences of ASCII 41-5A into 61-7A,
+ * presenting comparison results in a somewhat ISO/IEC 10646
+ * (ASCII-like) order, depending on the EBCDIC code page in use.
+ *
+ * NOTE: Other than Alpha A-Z/a-z, each code point is unique!
+ */
+static const short ucharmap[] = {
+ 0x00, 0x01, 0x02, 0x03, 0x9C, 0x09, 0x86, 0x7F,
+ 0x97, 0x8D, 0x8E, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+ 0x10, 0x11, 0x12, 0x13, 0x9D, 0x85, 0x08, 0x87,
+ 0x18, 0x19, 0x92, 0x8F, 0x1C, 0x1D, 0x1E, 0x1F,
+ 0x80, 0x81, 0x82, 0x83, 0x84, 0x0A, 0x17, 0x1B,
+ 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x05, 0x06, 0x07,
+ 0x90, 0x91, 0x16, 0x93, 0x94, 0x95, 0x96, 0x04,
+ 0x98, 0x99, 0x9A, 0x9B, 0x14, 0x15, 0x9E, 0x1A,
+ 0x20, 0xA0, 0xE2, 0xE4, 0xE0, 0xE1, 0xE3, 0xE5,
+ 0xE7, 0xF1, 0xA2, 0x2E, 0x3C, 0x28, 0x2B, 0x7C,
+ 0x26, 0xE9, 0xEA, 0xEB, 0xE8, 0xED, 0xEE, 0xEF,
+ 0xEC, 0xDF, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAC,
+ 0x2D, 0x2F, 0xC2, 0xC4, 0xC0, 0xC1, 0xC3, 0xC5,
+ 0xC7, 0xD1, 0xA6, 0x2C, 0x25, 0x5F, 0x3E, 0x3F,
+ 0xF8, 0xC9, 0xCA, 0xCB, 0xC8, 0xCD, 0xCE, 0xCF,
+ 0xCC, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22,
+ 0xD8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0xAB, 0xBB, 0xF0, 0xFD, 0xFE, 0xB1,
+ 0xB0, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70,
+ 0x71, 0x72, 0xAA, 0xBA, 0xE6, 0xB8, 0xC6, 0xA4,
+ 0xB5, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
+ 0x79, 0x7A, 0xA1, 0xBF, 0xD0, 0xDD, 0xDE, 0xAE,
+ 0x5E, 0xA3, 0xA5, 0xB7, 0xA9, 0xA7, 0xB6, 0xBC,
+ 0xBD, 0xBE, 0x5B, 0x5D, 0xAF, 0xA8, 0xB4, 0xD7,
+ 0x7B, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0xAD, 0xF4, 0xF6, 0xF2, 0xF3, 0xF5,
+ 0x7D, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70,
+ 0x71, 0x72, 0xB9, 0xFB, 0xFC, 0xF9, 0xFA, 0xFF,
+ 0x5C, 0xF7, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
+ 0x79, 0x7A, 0xB2, 0xD4, 0xD6, 0xD2, 0xD3, 0xD5,
+ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+ 0x38, 0x39, 0xB3, 0xDB, 0xDC, 0xD9, 0xDA, 0x9F
+};
+#endif
+
+AP_DECLARE(int) ap_cstr_casecmp(const char *s1, const char *s2)
+{
+ const unsigned char *str1 = (const unsigned char *)s1;
+ const unsigned char *str2 = (const unsigned char *)s2;
+ for (;;)
+ {
+ const int c1 = (int)(*str1);
+ const int c2 = (int)(*str2);
+ const int cmp = ucharmap[c1] - ucharmap[c2];
+ /* Not necessary to test for !c2, this is caught by cmp */
+ if (cmp || !c1)
+ return cmp;
+ str1++;
+ str2++;
+ }
+}
+
+AP_DECLARE(int) ap_cstr_casecmpn(const char *s1, const char *s2, apr_size_t n)
+{
+ const unsigned char *str1 = (const unsigned char *)s1;
+ const unsigned char *str2 = (const unsigned char *)s2;
+ while (n--)
+ {
+ const int c1 = (int)(*str1);
+ const int c2 = (int)(*str2);
+ const int cmp = ucharmap[c1] - ucharmap[c2];
+ /* Not necessary to test for !c2, this is caught by cmp */
+ if (cmp || !c1)
+ return cmp;
+ str1++;
+ str2++;
+ }
+ return 0;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 18:22:04 +0000