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- /* ====================================================================
- * Copyright (c) 1995-1999 The Apache Group. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the Apache Group
- * for use in the Apache HTTP server project (http://www.apache.org/)."
- *
- * 4. The names "Apache Server" and "Apache Group" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Group.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the Apache Group
- * for use in the Apache HTTP server project (http://www.apache.org/)."
- *
- * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Group and was originally based
- * on public domain software written at the National Center for
- * Supercomputing Applications, University of Illinois, Urbana-Champaign.
- * For more information on the Apache Group and the Apache HTTP server
- * project, please see <http://www.apache.org/>.
- *
- */
-
- /*
- * util.c: string utility things
- *
- * 3/21/93 Rob McCool
- * 1995-96 Many changes by the Apache Group
- *
- */
-
- /* 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 "httpd.h"
- #include "http_conf_globals.h" /* for user_id & group_id */
- #include "http_log.h"
- #if defined(SUNOS4)
- /* stdio.h has been read in ap_config.h already. Add missing prototypes here: */
- extern int fgetc(FILE *);
- extern char *fgets(char *s, int, FILE*);
- extern int fclose(FILE *);
- #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))
-
- void ap_util_init(void)
- {
- /* nothing to do... previously there was run-time initialization of
- * test_char_table here
- */
- }
-
-
- API_VAR_EXPORT const char ap_month_snames[12][4] =
- {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- };
- API_VAR_EXPORT const char ap_day_snames[7][4] =
- {
- "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
- };
-
- API_EXPORT(char *) ap_get_time()
- {
- time_t t;
- char *time_string;
-
- t = time(NULL);
- time_string = ctime(&t);
- time_string[strlen(time_string) - 1] = '\0';
- return (time_string);
- }
-
- API_EXPORT(char *) ap_ht_time(pool *p, time_t t, const char *fmt, int gmt)
- {
- char ts[MAX_STRING_LEN];
- char tf[MAX_STRING_LEN];
- struct tm *tms;
-
- tms = (gmt ? gmtime(&t) : localtime(&t));
- if(gmt) {
- /* 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.
- */
- const char *f;
- char *strp;
- 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;
- }
-
- /* check return code? */
- strftime(ts, MAX_STRING_LEN, fmt, tms);
- ts[MAX_STRING_LEN - 1] = '\0';
- return ap_pstrdup(p, ts);
- }
-
- API_EXPORT(char *) ap_gm_timestr_822(pool *p, time_t sec)
- {
- struct tm *tms;
-
- tms = gmtime(&sec);
-
- /* RFC date format; as strftime '%a, %d %b %Y %T GMT' */
- return ap_psprintf(p,
- "%s, %.2d %s %d %.2d:%.2d:%.2d GMT", ap_day_snames[tms->tm_wday],
- tms->tm_mday, ap_month_snames[tms->tm_mon], tms->tm_year + 1900,
- tms->tm_hour, tms->tm_min, tms->tm_sec);
- }
-
- /* What a pain in the ass. */
- #if defined(HAVE_GMTOFF)
- API_EXPORT(struct tm *) ap_get_gmtoff(int *tz)
- {
- time_t tt = time(NULL);
- struct tm *t;
-
- t = localtime(&tt);
- *tz = (int) (t->tm_gmtoff / 60);
- return t;
- }
- #else
- API_EXPORT(struct tm *) ap_get_gmtoff(int *tz)
- {
- time_t tt = time(NULL);
- struct tm gmt;
- struct tm *t;
- int days, hours, minutes;
-
- /* Assume we are never more than 24 hours away. */
- gmt = *gmtime(&tt); /* remember gmtime/localtime return ptr to static */
- t = localtime(&tt); /* buffer... so be careful */
- days = t->tm_yday - gmt.tm_yday;
- hours = ((days < -1 ? 24 : 1 < days ? -24 : days * 24)
- + t->tm_hour - gmt.tm_hour);
- minutes = hours * 60 + t->tm_min - gmt.tm_min;
- *tz = minutes;
- return t;
- }
- #endif
-
- /* 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?
- */
- API_EXPORT(int) ap_strcmp_match(const char *str, const char *exp)
- {
- int x, y;
-
- for (x = 0, y = 0; exp[y]; ++y, ++x) {
- if ((!str[x]) && (exp[y] != '*'))
- return -1;
- if (exp[y] == '*') {
- while (exp[++y] == '*');
- if (!exp[y])
- return 0;
- while (str[x]) {
- int ret;
- if ((ret = ap_strcmp_match(&str[x++], &exp[y])) != 1)
- return ret;
- }
- return -1;
- }
- else if ((exp[y] != '?') && (str[x] != exp[y]))
- return 1;
- }
- return (str[x] != '\0');
- }
-
- API_EXPORT(int) ap_strcasecmp_match(const char *str, const char *exp)
- {
- int x, y;
-
- for (x = 0, y = 0; exp[y]; ++y, ++x) {
- if ((!str[x]) && (exp[y] != '*'))
- return -1;
- if (exp[y] == '*') {
- while (exp[++y] == '*');
- if (!exp[y])
- return 0;
- while (str[x]) {
- int ret;
- if ((ret = ap_strcasecmp_match(&str[x++], &exp[y])) != 1)
- return ret;
- }
- return -1;
- }
- else if ((exp[y] != '?') && (ap_tolower(str[x]) != ap_tolower(exp[y])))
- return 1;
- }
- return (str[x] != '\0');
- }
-
- API_EXPORT(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;
- }
-
- /* This function substitutes for $0-$9, filling in regular expression
- * submatches. Pass it the same nmatch and pmatch arguments that you
- * passed 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 $-expressions, source should be the
- * string that was matched against.
- *
- * It returns the substituted string, or NULL on error.
- *
- * Parts of this code are based on Henry Spencer's regsub(), from his
- * AT&T V8 regexp package.
- */
-
- API_EXPORT(char *) ap_pregsub(pool *p, const char *input, const char *source,
- size_t nmatch, regmatch_t pmatch[])
- {
- const char *src = input;
- char *dest, *dst;
- char c;
- size_t no;
- int len;
-
- if (!source)
- return NULL;
- if (!nmatch)
- return ap_pstrdup(p, src);
-
- /* First pass, find the size */
-
- len = 0;
-
- while ((c = *src++) != '\0') {
- if (c == '&')
- no = 0;
- else if (c == '$' && ap_isdigit(*src))
- no = *src++ - '0';
- else
- no = 10;
-
- if (no > 9) { /* Ordinary character. */
- if (c == '\\' && (*src == '$' || *src == '&'))
- c = *src++;
- len++;
- }
- else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) {
- len += pmatch[no].rm_eo - pmatch[no].rm_so;
- }
-
- }
-
- dest = dst = ap_pcalloc(p, len + 1);
-
- /* Now actually fill in the string */
-
- src = input;
-
- while ((c = *src++) != '\0') {
- if (c == '&')
- no = 0;
- else if (c == '$' && ap_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
- */
- API_EXPORT(void) ap_getparents(char *name)
- {
- int l, w;
-
- /* Four paseses, as per RFC 1808 */
- /* a) remove ./ path segments */
-
- for (l = 0, w = 0; name[l] != '\0';) {
- if (name[l] == '.' && name[l + 1] == '/' && (l == 0 || 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] == '.' && name[w - 2] == '/')
- w--;
- name[w] = '\0';
-
- /* c) remove all xx/../ segments. (including leading ../ and /../) */
- l = 0;
-
- while (name[l] != '\0') {
- if (name[l] == '.' && name[l + 1] == '.' && name[l + 2] == '/' &&
- (l == 0 || name[l - 1] == '/')) {
- register int m = l + 3, n;
-
- l = l - 2;
- if (l >= 0) {
- while (l >= 0 && 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] == '.' && name[l - 3] == '/') {
- l = l - 4;
- if (l >= 0) {
- while (l >= 0 && name[l] != '/')
- l--;
- l++;
- }
- else
- l = 0;
- name[l] = '\0';
- }
- }
-
- API_EXPORT(void) ap_no2slash(char *name)
- {
- char *d, *s;
-
- s = d = name;
-
- #ifdef WIN32
- /* 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
- *
- * examples:
- * /a/b, 1 ==> /
- * /a/b, 2 ==> /a/
- * /a/b, 3 ==> /a/b/
- * /a/b, 4 ==> /a/b/
- */
- API_EXPORT(char *) ap_make_dirstr_prefix(char *d, const char *s, int n)
- {
- for (;;) {
- *d = *s;
- if (*d == '\0') {
- *d = '/';
- break;
- }
- if (*d == '/' && (--n) == 0)
- break;
- ++d;
- ++s;
- }
- *++d = 0;
- return (d);
- }
-
-
- /*
- * return the parent directory name including trailing / of the file s
- */
- API_EXPORT(char *) ap_make_dirstr_parent(pool *p, const char *s)
- {
- char *last_slash = strrchr(s, '/');
- char *d;
- int l;
-
- if (last_slash == NULL) {
- /* XXX: well this is really broken if this happens */
- return (ap_pstrdup(p, "/"));
- }
- l = (last_slash - s) + 1;
- d = ap_palloc(p, l + 1);
- memcpy(d, s, l);
- d[l] = 0;
- return (d);
- }
-
-
- /*
- * This function is deprecated. Use one of the preceeding two functions
- * which are faster.
- */
- API_EXPORT(char *) ap_make_dirstr(pool *p, const char *s, int n)
- {
- register int x, f;
- char *res;
-
- for (x = 0, f = 0; s[x]; x++) {
- if (s[x] == '/')
- if ((++f) == n) {
- res = ap_palloc(p, x + 2);
- memcpy(res, s, x);
- res[x] = '/';
- res[x + 1] = '\0';
- return res;
- }
- }
-
- if (s[strlen(s) - 1] == '/')
- return ap_pstrdup(p, s);
- else
- return ap_pstrcat(p, s, "/", NULL);
- }
-
- API_EXPORT(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;
- }
-
-
- API_EXPORT(void) ap_chdir_file(const char *file)
- {
- const char *x;
- char buf[HUGE_STRING_LEN];
-
- x = strrchr(file, '/');
- if (x == NULL) {
- chdir(file);
- }
- else if (x - file < sizeof(buf) - 1) {
- memcpy(buf, file, x - file);
- buf[x - file] = '\0';
- chdir(buf);
- }
- /* XXX: well, this is a silly function, no method of reporting an
- * error... ah well. */
- }
-
- API_EXPORT(char *) ap_getword_nc(pool *atrans, char **line, char stop)
- {
- return ap_getword(atrans, (const char **) line, stop);
- }
-
- API_EXPORT(char *) ap_getword(pool *atrans, const char **line, char stop)
- {
- char *pos = strchr(*line, stop);
- char *res;
-
- if (!pos) {
- res = ap_pstrdup(atrans, *line);
- *line += strlen(*line);
- return res;
- }
-
- res = ap_pstrndup(atrans, *line, pos - *line);
-
- while (*pos == stop) {
- ++pos;
- }
-
- *line = pos;
-
- return res;
- }
-
- API_EXPORT(char *) ap_getword_white_nc(pool *atrans, char **line)
- {
- return ap_getword_white(atrans, (const char **) line);
- }
-
- API_EXPORT(char *) ap_getword_white(pool *atrans, const char **line)
- {
- int pos = -1, x;
- char *res;
-
- for (x = 0; (*line)[x]; x++) {
- if (ap_isspace((*line)[x])) {
- pos = x;
- break;
- }
- }
-
- if (pos == -1) {
- res = ap_pstrdup(atrans, *line);
- *line += strlen(*line);
- return res;
- }
-
- res = ap_palloc(atrans, pos + 1);
- ap_cpystrn(res, *line, pos + 1);
-
- while (ap_isspace((*line)[pos]))
- ++pos;
-
- *line += pos;
-
- return res;
- }
-
- API_EXPORT(char *) ap_getword_nulls_nc(pool *atrans, char **line, char stop)
- {
- return ap_getword_nulls(atrans, (const char **) line, stop);
- }
-
- API_EXPORT(char *) ap_getword_nulls(pool *atrans, const char **line, char stop)
- {
- char *pos = strchr(*line, stop);
- char *res;
-
- if (!pos) {
- res = ap_pstrdup(atrans, *line);
- *line += strlen(*line);
- return res;
- }
-
- res = ap_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(pool *p, const char *start, int len, char quote)
- {
- char *result = ap_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';
- return result;
- }
-
- API_EXPORT(char *) ap_getword_conf_nc(pool *p, char **line)
- {
- return ap_getword_conf(p, (const char **) line);
- }
-
- API_EXPORT(char *) ap_getword_conf(pool *p, const char **line)
- {
- const char *str = *line, *strend;
- char *res;
- char quote;
-
- while (*str && ap_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 && !ap_isspace(*strend))
- ++strend;
-
- res = substring_conf(p, str, strend - str, 0);
- }
-
- while (*strend && ap_isspace(*strend))
- ++strend;
- *line = strend;
- return res;
- }
-
- API_EXPORT(int) ap_cfg_closefile(configfile_t *cfp)
- {
- #ifdef DEBUG
- ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, NULL,
- "Done with config file %s", cfp->name);
- #endif
- return (cfp->close == NULL) ? 0 : cfp->close(cfp->param);
- }
-
- /* Common structure that holds the file and pool for ap_pcfg_openfile */
- typedef struct {
- struct pool *pool;
- FILE *file;
- } poolfile_t;
-
- static int cfg_close(void *param)
- {
- poolfile_t *cfp = (poolfile_t *) param;
- return (ap_pfclose(cfp->pool, cfp->file));
- }
-
- static int cfg_getch(void *param)
- {
- poolfile_t *cfp = (poolfile_t *) param;
- return (fgetc(cfp->file));
- }
-
- static void *cfg_getstr(void *buf, size_t bufsiz, void *param)
- {
- poolfile_t *cfp = (poolfile_t *) param;
- return (fgets(buf, bufsiz, cfp->file));
- }
-
- /* Open a configfile_t as FILE, return open configfile_t struct pointer */
- API_EXPORT(configfile_t *) ap_pcfg_openfile(pool *p, const char *name)
- {
- configfile_t *new_cfg;
- poolfile_t *new_pfile;
- FILE *file;
- struct stat stbuf;
- int saved_errno;
-
- if (name == NULL) {
- ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, NULL,
- "Internal error: pcfg_openfile() called with NULL filename");
- return NULL;
- }
-
- if (!ap_os_is_filename_valid(name)) {
- ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, NULL,
- "Access to config file %s denied: not a valid filename",
- name);
- errno = EACCES;
- return NULL;
- }
-
- file = ap_pfopen(p, name, "r");
- #ifdef DEBUG
- saved_errno = errno;
- ap_log_error(APLOG_MARK, APLOG_DEBUG | APLOG_NOERRNO, NULL,
- "Opening config file %s (%s)",
- name, (file == NULL) ? strerror(errno) : "successful");
- errno = saved_errno;
- #endif
- if (file == NULL)
- return NULL;
-
- if (fstat(fileno(file), &stbuf) == 0 &&
- !S_ISREG(stbuf.st_mode) &&
- #if defined(WIN32) || defined(OS2)
- !(strcasecmp(name, "nul") == 0 ||
- (strlen(name) >= 4 &&
- strcasecmp(name + strlen(name) - 4, "/nul") == 0))) {
- #else
- strcmp(name, "/dev/null") != 0) {
- #endif /* WIN32 || OS2 */
- saved_errno = errno;
- ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, NULL,
- "Access to file %s denied by server: not a regular file",
- name);
- ap_pfclose(p, file);
- errno = saved_errno;
- return NULL;
- }
-
- new_cfg = ap_palloc(p, sizeof(*new_cfg));
- new_pfile = ap_palloc(p, sizeof(*new_pfile));
- new_pfile->file = file;
- new_pfile->pool = p;
- new_cfg->param = new_pfile;
- new_cfg->name = ap_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;
- return new_cfg;
- }
-
-
- /* Allocate a configfile_t handle with user defined functions and params */
- API_EXPORT(configfile_t *) ap_pcfg_open_custom(pool *p, const char *descr,
- void *param,
- int(*getch)(void *param),
- void *(*getstr) (void *buf, size_t bufsiz, void *param),
- int(*close_func)(void *param))
- {
- configfile_t *new_cfg = ap_palloc(p, sizeof(*new_cfg));
- #ifdef DEBUG
- ap_log_error(APLOG_MARK, APLOG_DEBUG | APLOG_NOERRNO, 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 */
- API_EXPORT(int) ap_cfg_getc(configfile_t *cfp)
- {
- register int ch = cfp->getch(cfp->param);
- if (ch == LF)
- ++cfp->line_number;
- return ch;
- }
-
-
- /* Read one line from open configfile_t, strip LF, increase line number */
- /* If custom handler does not define a getstr() function, read char by char */
- API_EXPORT(int) ap_cfg_getline(char *buf, size_t bufsize, 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 (ap_isspace(*src))
- ++src;
- /* blast trailing whitespace */
- dst = &src[strlen(src)];
- while (--dst >= src && ap_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|APLOG_NOERRNO, 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 && ap_isspace(buf[i - 1]))
- --i;
- buf[i] = '\0';
- #ifdef DEBUG_CFG_LINES
- ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 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.
- */
- API_EXPORT(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 == ',' || ap_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 = ptr;
- return NULL;
- }
-
- /* Advance field pointer to the next non-comma, non-white byte */
-
- while (*ptr == ',' || ap_isspace(*ptr))
- ++ptr;
-
- *field = 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.
- */
- API_EXPORT(char *) ap_get_list_item(pool *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 = ap_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
- : ap_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.
- */
- API_EXPORT(int) ap_find_list_item(pool *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 == ',' || ap_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++ == ap_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.
- */
-
- API_EXPORT(char *) ap_get_token(pool *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 && ap_isspace(*ptr))
- ++ptr;
-
- tok_start = ptr;
-
- /* find token end, skipping over quoted strings.
- * (comments are already gone).
- */
-
- while (*ptr && (accept_white || !ap_isspace(*ptr))
- && *ptr != ';' && *ptr != ',') {
- if (*ptr++ == '"')
- while (*ptr)
- if (*ptr++ == '"')
- break;
- }
-
- tok_len = ptr - tok_start;
- token = ap_pstrndup(p, tok_start, tok_len);
-
- /* Advance accept_line pointer to the next non-white byte */
-
- while (*ptr && ap_isspace(*ptr))
- ++ptr;
-
- *accept_line = ptr;
- return token;
- }
-
-
- /* find http tokens, see the definition of token from RFC2068 */
- API_EXPORT(int) ap_find_token(pool *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;
- }
- }
- }
-
-
- API_EXPORT(int) ap_find_last_token(pool *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) && !(ap_isspace(line[lidx - 1]) || line[lidx - 1] == ',')))
- return 0;
-
- return (strncasecmp(&line[lidx], tok, tlen) == 0);
- }
-
- API_EXPORT(char *) ap_escape_shell_cmd(pool *p, const char *str)
- {
- char *cmd;
- unsigned char *d;
- const unsigned char *s;
-
- cmd = ap_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)
- /* Don't allow '&' in parameters under OS/2. */
- /* This can be used to send commands to the shell. */
- if (*s == '&') {
- *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;
-
- #ifndef 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 /*CHARSET_EBCDIC*/
- char xstr[5];
- xstr[0]='0';
- xstr[1]='x';
- xstr[2]=what[0];
- xstr[3]=what[1];
- xstr[4]='\0';
- digit = os_toebcdic[0xFF & strtol(xstr, NULL, 16)];
- #endif /*CHARSET_EBCDIC*/
- return (digit);
- }
-
- /*
- * Unescapes a URL.
- * Returns 0 on success, non-zero on error
- * Failure is due to
- * bad % escape returns BAD_REQUEST
- *
- * decoding %00 -> \0
- * decoding %2f -> / (a special character)
- * returns NOT_FOUND
- */
- API_EXPORT(int) ap_unescape_url(char *url)
- {
- register int x, y, badesc, badpath;
-
- badesc = 0;
- badpath = 0;
- for (x = 0, y = 0; url[y]; ++x, ++y) {
- if (url[y] != '%')
- url[x] = url[y];
- else {
- if (!ap_isxdigit(url[y + 1]) || !ap_isxdigit(url[y + 2])) {
- badesc = 1;
- url[x] = '%';
- }
- else {
- url[x] = x2c(&url[y + 1]);
- y += 2;
- if (url[x] == '/' || url[x] == '\0')
- badpath = 1;
- }
- }
- }
- url[x] = '\0';
- if (badesc)
- return BAD_REQUEST;
- else if (badpath)
- return NOT_FOUND;
- else
- return OK;
- }
-
- API_EXPORT(char *) ap_construct_server(pool *p, const char *hostname,
- unsigned port, const request_rec *r)
- {
- if (ap_is_default_port(port, r))
- return ap_pstrdup(p, hostname);
- else {
- return ap_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) fist 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 ap_inline unsigned char *c2x(unsigned what, unsigned char *where)
- {
- *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 "./").
- */
-
- API_EXPORT(char *) ap_escape_path_segment(pool *p, const char *segment)
- {
- char *copy = ap_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;
- }
-
- API_EXPORT(char *) ap_os_escape_path(pool *p, const char *path, int partial)
- {
- char *copy = ap_palloc(p, 3 * strlen(path) + 3);
- const unsigned char *s = (const unsigned char *)path;
- unsigned char *d = (unsigned char *)copy;
- unsigned c;
-
- if (!partial) {
- char *colon = strchr(path, ':');
- char *slash = strchr(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 */
-
- API_EXPORT(char *) ap_escape_html(pool *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;
-
- if (j == 0)
- return ap_pstrndup(p, s, i);
-
- x = ap_palloc(p, i + j + 1);
- for (i = 0, j = 0; s[i] != '\0'; i++, j++)
- if (s[i] == '<') {
- memcpy(&x[j], "<", 4);
- j += 3;
- }
- else if (s[i] == '>') {
- memcpy(&x[j], ">", 4);
- j += 3;
- }
- else if (s[i] == '&') {
- memcpy(&x[j], "&", 5);
- j += 4;
- }
- else
- x[j] = s[i];
-
- x[j] = '\0';
- return x;
- }
-
- API_EXPORT(int) ap_is_directory(const char *path)
- {
- struct stat finfo;
-
- if (stat(path, &finfo) == -1)
- return 0; /* in error condition, just return no */
-
- return (S_ISDIR(finfo.st_mode));
- }
-
- API_EXPORT(char *) ap_make_full_path(pool *a, const char *src1,
- const char *src2)
- {
- register int x;
-
- x = strlen(src1);
- if (x == 0)
- return ap_pstrcat(a, "/", src2, NULL);
-
- if (src1[x - 1] != '/')
- return ap_pstrcat(a, src1, "/", src2, NULL);
- else
- return ap_pstrcat(a, src1, src2, NULL);
- }
-
- /*
- * Check for an absoluteURI syntax (see section 3.2 in RFC2068).
- */
- API_EXPORT(int) ap_is_url(const char *u)
- {
- register int x;
-
- for (x = 0; u[x] != ':'; x++) {
- if ((!u[x]) ||
- ((!ap_isalpha(u[x])) && (!ap_isdigit(u[x])) &&
- (u[x] != '+') && (u[x] != '-') && (u[x] != '.'))) {
- return 0;
- }
- }
-
- return (x ? 1 : 0); /* If the first character is ':', it's broken, too */
- }
-
- API_EXPORT(int) ap_can_exec(const struct stat *finfo)
- {
- #ifdef MULTIPLE_GROUPS
- int cnt;
- #endif
- #if defined(OS2) || defined(WIN32)
- /* OS/2 dosen't have Users and Groups */
- return 1;
- #else
- if (ap_user_id == finfo->st_uid)
- if (finfo->st_mode & S_IXUSR)
- return 1;
- if (ap_group_id == finfo->st_gid)
- if (finfo->st_mode & S_IXGRP)
- return 1;
- #ifdef MULTIPLE_GROUPS
- for (cnt = 0; cnt < NGROUPS_MAX; cnt++) {
- if (group_id_list[cnt] == finfo->st_gid)
- if (finfo->st_mode & S_IXGRP)
- return 1;
- }
- #endif
- return (finfo->st_mode & S_IXOTH);
- #endif
- }
-
- #ifdef NEED_STRDUP
- char *strdup(const char *str)
- {
- char *sdup;
-
- if (!(sdup = (char *) malloc(strlen(str) + 1))) {
- fprintf(stderr, "Ouch! Out of memory in our strdup()!\n");
- return NULL;
- }
- sdup = strcpy(sdup, str);
-
- return sdup;
- }
- #endif
-
- /* The following two routines were donated for SVR4 by Andreas Vogel */
- #ifdef NEED_STRCASECMP
- int strcasecmp(const char *a, const char *b)
- {
- const char *p = a;
- const char *q = b;
- for (p = a, q = b; *p && *q; p++, q++) {
- int diff = ap_tolower(*p) - ap_tolower(*q);
- if (diff)
- return diff;
- }
- if (*p)
- return 1; /* p was longer than q */
- if (*q)
- return -1; /* p was shorter than q */
- return 0; /* Exact match */
- }
-
- #endif
-
- #ifdef NEED_STRNCASECMP
- int strncasecmp(const char *a, const char *b, int n)
- {
- const char *p = a;
- const char *q = b;
-
- for (p = a, q = b; /*NOTHING */ ; p++, q++) {
- int diff;
- if (p == a + n)
- return 0; /* Match up to n characters */
- if (!(*p && *q))
- return *p - *q;
- diff = ap_tolower(*p) - ap_tolower(*q);
- if (diff)
- return diff;
- }
- /*NOTREACHED */
- }
- #endif
-
- /* The following routine was donated for UTS21 by dwd@bell-labs.com */
- #ifdef NEED_STRSTR
- char *strstr(char *s1, char *s2)
- {
- char *p1, *p2;
- if (*s2 == '\0') {
- /* an empty s2 */
- return(s1);
- }
- while((s1 = strchr(s1, *s2)) != NULL) {
- /* found first character of s2, see if the rest matches */
- p1 = s1;
- p2 = s2;
- while (*++p1 == *++p2) {
- if (*p1 == '\0') {
- /* both strings ended together */
- return(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(s1);
- }
- #endif
-
- #ifdef NEED_INITGROUPS
- int initgroups(const char *name, gid_t basegid)
- {
- #if defined(QNX) || defined(MPE) || defined(BEOS) || defined(_OSD_POSIX) || defined(TPF)
- /* QNX, MPE and BeOS do not appear to support supplementary groups. */
- return 0;
- #else /* ndef QNX */
- gid_t groups[NGROUPS_MAX];
- struct group *g;
- int index = 0;
-
- setgrent();
-
- groups[index++] = basegid;
-
- while (index < NGROUPS_MAX && ((g = getgrent()) != NULL))
- if (g->gr_gid != basegid) {
- char **names;
-
- for (names = g->gr_mem; *names != NULL; ++names)
- if (!strcmp(*names, name))
- groups[index++] = g->gr_gid;
- }
-
- endgrent();
-
- return setgroups(index, groups);
- #endif /* def QNX */
- }
- #endif /* def NEED_INITGROUPS */
-
- #ifdef NEED_WAITPID
- /* From ikluft@amdahl.com
- * this is not ideal but it works for SVR3 variants
- * Modified by dwd@bell-labs.com to call wait3 instead of wait because
- * apache started to use the WNOHANG option.
- */
- int waitpid(pid_t pid, int *statusp, int options)
- {
- int tmp_pid;
- if (kill(pid, 0) == -1) {
- errno = ECHILD;
- return -1;
- }
- while (((tmp_pid = wait3(statusp, options, 0)) != pid) &&
- (tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
- ;
- return tmp_pid;
- }
- #endif
-
- API_EXPORT(int) ap_ind(const char *s, char c)
- {
- register int x;
-
- for (x = 0; s[x]; x++)
- if (s[x] == c)
- return x;
-
- return -1;
- }
-
- API_EXPORT(int) ap_rind(const char *s, char c)
- {
- register int x;
-
- for (x = strlen(s) - 1; x != -1; x--)
- if (s[x] == c)
- return x;
-
- return -1;
- }
-
- API_EXPORT(void) ap_str_tolower(char *str)
- {
- while (*str) {
- *str = ap_tolower(*str);
- ++str;
- }
- }
-
- API_EXPORT(uid_t) ap_uname2id(const char *name)
- {
- #ifdef WIN32
- return (1);
- #else
- struct passwd *ent;
-
- if (name[0] == '#')
- return (atoi(&name[1]));
-
- if (!(ent = getpwnam(name))) {
- fprintf(stderr, "%s: bad user name %s\n", ap_server_argv0, name);
- exit(1);
- }
- return (ent->pw_uid);
- #endif
- }
-
- API_EXPORT(gid_t) ap_gname2id(const char *name)
- {
- #ifdef WIN32
- return (1);
- #else
- struct group *ent;
-
- if (name[0] == '#')
- return (atoi(&name[1]));
-
- if (!(ent = getgrnam(name))) {
- fprintf(stderr, "%s: bad group name %s\n", ap_server_argv0, name);
- exit(1);
- }
- return (ent->gr_gid);
- #endif
- }
-
-
- /*
- * Parses a host of the form <address>[:port]
- * :port is permitted if 'port' is not NULL
- */
- unsigned long ap_get_virthost_addr(char *w, unsigned short *ports)
- {
- struct hostent *hep;
- unsigned long my_addr;
- char *p;
-
- p = strchr(w, ':');
- if (ports != NULL) {
- *ports = 0;
- if (p != NULL && strcmp(p + 1, "*") != 0)
- *ports = atoi(p + 1);
- }
-
- if (p != NULL)
- *p = '\0';
- if (strcmp(w, "*") == 0) {
- if (p != NULL)
- *p = ':';
- return htonl(INADDR_ANY);
- }
-
- my_addr = ap_inet_addr((char *)w);
- if (my_addr != INADDR_NONE) {
- if (p != NULL)
- *p = ':';
- return my_addr;
- }
-
- hep = gethostbyname(w);
-
- if ((!hep) || (hep->h_addrtype != AF_INET || !hep->h_addr_list[0])) {
- fprintf(stderr, "Cannot resolve host name %s --- exiting!\n", w);
- exit(1);
- }
-
- if (hep->h_addr_list[1]) {
- fprintf(stderr, "Host %s has multiple addresses ---\n", w);
- fprintf(stderr, "you must choose one explicitly for use as\n");
- fprintf(stderr, "a virtual host. Exiting!!!\n");
- exit(1);
- }
-
- if (p != NULL)
- *p = ':';
-
- return ((struct in_addr *) (hep->h_addr))->s_addr;
- }
-
-
- static char *find_fqdn(pool *a, struct hostent *p)
- {
- int x;
-
- if (!strchr(p->h_name, '.')) {
- 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 ap_pstrdup(a, p->h_aliases[x]);
- }
- return NULL;
- }
- return ap_pstrdup(a, (void *) p->h_name);
- }
-
- char *ap_get_local_host(pool *a)
- {
- #ifndef MAXHOSTNAMELEN
- #define MAXHOSTNAMELEN 256
- #endif
- char str[MAXHOSTNAMELEN + 1];
- char *server_hostname;
- struct hostent *p;
-
- if (gethostname(str, sizeof(str) - 1) != 0) {
- perror("Unable to gethostname");
- exit(1);
- }
- str[MAXHOSTNAMELEN] = '\0';
- if ((!(p = gethostbyname(str))) || (!(server_hostname = find_fqdn(a, p)))) {
- fprintf(stderr, "%s: cannot determine local host name.\n",
- ap_server_argv0);
- fprintf(stderr, "Use the ServerName directive to set it manually.\n");
- exit(1);
- }
-
- return server_hostname;
- }
-
- /* aaaack but it's fast and const should make it shared text page. */
- static const unsigned char pr2six[256] =
- {
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63, 52, 53, 54,
- 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 64, 64, 64, 0, 1, 2, 3,
- 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
- 22, 23, 24, 25, 64, 64, 64, 64, 64, 64, 26, 27, 28, 29, 30, 31, 32,
- 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
- 50, 51, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
- };
-
- API_EXPORT(char *) ap_uudecode(pool *p, const char *bufcoded)
- {
- int nbytesdecoded;
- register const unsigned char *bufin;
- register char *bufplain;
- register unsigned char *bufout;
- register int nprbytes;
-
- /* Strip leading whitespace. */
-
- while (*bufcoded == ' ' || *bufcoded == '\t')
- bufcoded++;
-
- /* Figure out how many characters are in the input buffer.
- * Allocate this many from the per-transaction pool for the result.
- */
- #ifndef CHARSET_EBCDIC
- bufin = (const unsigned char *) bufcoded;
- while (pr2six[*(bufin++)] <= 63);
- nprbytes = (bufin - (const unsigned char *) bufcoded) - 1;
- nbytesdecoded = ((nprbytes + 3) / 4) * 3;
-
- bufplain = ap_palloc(p, nbytesdecoded + 1);
- bufout = (unsigned char *) bufplain;
-
- bufin = (const unsigned char *) bufcoded;
-
- while (nprbytes > 0) {
- *(bufout++) =
- (unsigned char) (pr2six[*bufin] << 2 | pr2six[bufin[1]] >> 4);
- *(bufout++) =
- (unsigned char) (pr2six[bufin[1]] << 4 | pr2six[bufin[2]] >> 2);
- *(bufout++) =
- (unsigned char) (pr2six[bufin[2]] << 6 | pr2six[bufin[3]]);
- bufin += 4;
- nprbytes -= 4;
- }
-
- if (nprbytes & 03) {
- if (pr2six[bufin[-2]] > 63)
- nbytesdecoded -= 2;
- else
- nbytesdecoded -= 1;
- }
- bufplain[nbytesdecoded] = '\0';
- #else /*CHARSET_EBCDIC*/
- bufin = (const unsigned char *) bufcoded;
- while (pr2six[os_toascii[(unsigned char)*(bufin++)]] <= 63);
- nprbytes = (bufin - (const unsigned char *) bufcoded) - 1;
- nbytesdecoded = ((nprbytes + 3) / 4) * 3;
-
- bufplain = ap_palloc(p, nbytesdecoded + 1);
- bufout = (unsigned char *) bufplain;
-
- bufin = (const unsigned char *) bufcoded;
-
- while (nprbytes > 0) {
- *(bufout++) = os_toebcdic[
- (unsigned char) (pr2six[os_toascii[*bufin]] << 2 | pr2six[os_toascii[bufin[1]]] >> 4)];
- *(bufout++) = os_toebcdic[
- (unsigned char) (pr2six[os_toascii[bufin[1]]] << 4 | pr2six[os_toascii[bufin[2]]] >> 2)];
- *(bufout++) = os_toebcdic[
- (unsigned char) (pr2six[os_toascii[bufin[2]]] << 6 | pr2six[os_toascii[bufin[3]]])];
- bufin += 4;
- nprbytes -= 4;
- }
-
- if (nprbytes & 03) {
- if (pr2six[os_toascii[bufin[-2]]] > 63)
- nbytesdecoded -= 2;
- else
- nbytesdecoded -= 1;
- }
- bufplain[nbytesdecoded] = '\0';
- #endif /*CHARSET_EBCDIC*/
- return bufplain;
- }
-
- static const char basis_64[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
- API_EXPORT(char *) ap_uuencode(pool *a, char *string)
- {
- int i, len = strlen(string);
- char *p;
- char *encoded = (char *) ap_palloc(a, (len+2) / 3 * 4);
-
- p = encoded;
- #ifndef CHARSET_EBCDIC
- for (i = 0; i < len-2; i += 3) {
- *p++ = basis_64[(string[i] >> 2) & 0x3F];
- *p++ = basis_64[((string[i] & 0x3) << 4) | ((int) (string[i + 1] & 0xF0) >> 4)];
- *p++ = basis_64[((string[i + 1] & 0xF) << 2) | ((int) (string[i + 2] & 0xC0) >> 6)];
- *p++ = basis_64[string[i + 2] & 0x3F];
- }
- if (i < len) {
- *p++ = basis_64[(string[i] >> 2) & 0x3F];
- *p++ = basis_64[((string[i] & 0x3) << 4) | ((int) (string[i + 1] & 0xF0) >> 4)];
- if (i == (len-2))
- *p++ = basis_64[((string[i + 1] & 0xF) << 2)];
- else
- *p++ = '=';
- *p++ = '=';
- }
- #else /*CHARSET_EBCDIC*/
- for (i = 0; i < len-2; i += 3) {
- *p++ = basis_64[(os_toascii[string[i]] >> 2) & 0x3F];
- *p++ = basis_64[((os_toascii[string[i]] & 0x3) << 4) | ((int) (os_toascii[string[i + 1]] & 0xF0) >> 4)];
- *p++ = basis_64[((os_toascii[string[i + 1]] & 0xF) << 2) | ((int) (os_toascii[string[i + 2]] & 0xC0) >> 6)];
- *p++ = basis_64[os_toascii[string[i + 2]] & 0x3F];
- }
- if (i < len) {
- *p++ = basis_64[(os_toascii[string[i]] >> 2) & 0x3F];
- *p++ = basis_64[((os_toascii[string[i]] & 0x3) << 4) | ((int) (os_toascii[string[i + 1]] & 0xF0) >> 4)];
- if (i == (len-2))
- *p++ = basis_64[((os_toascii[string[i + 1]] & 0xF) << 2)];
- else
- *p++ = '=';
- *p++ = '=';
- }
- #endif /*CHARSET_EBCDIC*/
-
- *p = '\0';
- return encoded;
- }
-
- #ifdef OS2
- void os2pathname(char *path)
- {
- char newpath[MAX_STRING_LEN];
- int loop;
- int offset;
-
- offset = 0;
- for (loop = 0; loop < (strlen(path) + 1) && loop < sizeof(newpath) - 1; loop++) {
- if (path[loop] == '/') {
- newpath[offset] = '\\';
- /*
- offset = offset + 1;
- newpath[offset] = '\\';
- */
- }
- else
- newpath[offset] = path[loop];
- offset = offset + 1;
- };
- /* Debugging code */
- /* fprintf(stderr, "%s \n", newpath); */
-
- strcpy(path, newpath);
- };
- #endif
-
-
- #ifdef NEED_STRERROR
- char *
- strerror(int err)
- {
-
- char *p;
- extern char *const sys_errlist[];
-
- p = sys_errlist[err];
- return (p);
- }
- #endif
-
- #if defined(NEED_DIFFTIME)
- double difftime(time_t time1, time_t time0)
- {
- return (time1 - time0);
- }
- #endif
-
- /* 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
- */
- API_EXPORT(void) ap_content_type_tolower(char *str)
- {
- char *semi;
-
- semi = strchr(str, ';');
- if (semi) {
- *semi = '\0';
- }
- while (*str) {
- *str = ap_tolower(*str);
- ++str;
- }
- if (semi) {
- *semi = ';';
- }
- }
-
- /*
- * Given a string, replace any bare " with \" .
- */
- API_EXPORT(char *) ap_escape_quotes (pool *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 = ap_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;
- }
-