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apache / httpd / 4cdb8a376e350b9430c83fd8321d31080e3e50bd / . / server / util.c
blob: 19cdecf93dc58ab671badab31235f776a6c45ae7 [file] [log] [blame]
/* ====================================================================
* 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
*/
#define CORE_PRIVATE
#include "ap_config.h"
#include "httpd.h"
#include "http_main.h"
#include "http_log.h"
#include "http_protocol.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))
/*
* 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.
*/
API_EXPORT(char *) ap_field_noparam(ap_context_t *p, const char *intype)
{
const char *semi;
semi = strchr(intype, ';');
if (semi == NULL) {
return ap_pstrdup(p, intype);
}
else {
while ((semi > intype) && ap_isspace(semi[-1])) {
semi--;
}
return ap_pstrndup(p, intype, semi - intype);
}
}
API_EXPORT(char *) ap_ht_time(ap_context_t *p, ap_time_t t, const char *fmt, int gmt)
{
ap_size_t retcode;
char ts[MAX_STRING_LEN];
char tf[MAX_STRING_LEN];
ap_exploded_time_t xt;
if (gmt) {
const char *f;
char *strp;
ap_explode_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 {
ap_explode_localtime(&xt, t);
}
/* check return code? */
ap_strftime(ts, &retcode, MAX_STRING_LEN, fmt, &xt);
ts[MAX_STRING_LEN - 1] = '\0';
return ap_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?
*/
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;
}
/*
* Here's a pool-based interface to POSIX regex's regcomp().
* Note that we return regex_t instead of being passed one.
* The reason is that if you use an already-used regex_t structure,
* the memory that you've already allocated gets forgotten, and
* regfree() doesn't clear it. So we don't allow it.
*/
static ap_status_t regex_cleanup(void *preg)
{
regfree((regex_t *) preg);
return APR_SUCCESS;
}
API_EXPORT(regex_t *) ap_pregcomp(ap_context_t *p, const char *pattern,
int cflags)
{
regex_t *preg = ap_palloc(p, sizeof(regex_t));
if (regcomp(preg, pattern, cflags)) {
return NULL;
}
ap_register_cleanup(p, (void *) preg, regex_cleanup, regex_cleanup);
return preg;
}
API_EXPORT(void) ap_pregfree(ap_context_t *p, regex_t * reg)
{
ap_block_alarms();
regfree(reg);
ap_kill_cleanup(p, (void *) reg, regex_cleanup);
ap_unblock_alarms();
}
/*
* Apache stub function for the regex libraries regexec() to make sure the
* whole regex(3) API is available through the Apache (exported) namespace.
* This is especially important for the DSO situations of modules.
* DO NOT MAKE A MACRO OUT OF THIS FUNCTION!
*/
API_EXPORT(int) ap_regexec(const regex_t *preg, const char *string,
size_t nmatch, regmatch_t pmatch[], int eflags)
{
return regexec(preg, string, nmatch, pmatch, eflags);
}
API_EXPORT(size_t) ap_regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
{
return regerror(errcode, preg, errbuf, errbuf_size);
}
/* This function substitutes for $0-$9, filling in regular expression
* submatches. Pass it the same nmatch and pmatch arguments that you
* passed ap_regexec(). pmatch should not be greater than the maximum number
* of subexpressions - i.e. one more than the re_nsub member of regex_t.
*
* input should be the string with the $-expressions, source should be the
* string that was matched against.
*
* It returns the substituted string, or NULL on error.
*
* Parts of this code are based on Henry Spencer's regsub(), from his
* AT&T V8 regexp package.
*/
API_EXPORT(char *) ap_pregsub(ap_context_t *p, const char *input, const char *source,
size_t nmatch, regmatch_t pmatch[])
{
const char *src = input;
char *dest, *dst;
char c;
size_t no;
int len;
if (!source)
return NULL;
if (!nmatch)
return ap_pstrdup(p, src);
/* First pass, find the size */
len = 0;
while ((c = *src++) != '\0') {
if (c == '&')
no = 0;
else if (c == '$' && 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 (;;) {
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
*/
API_EXPORT(char *) ap_make_dirstr_parent(ap_context_t *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(ap_context_t *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(ap_context_t *atrans, char **line, char stop)
{
return ap_getword(atrans, (const char **) line, stop);
}
API_EXPORT(char *) ap_getword(ap_context_t *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(ap_context_t *atrans, char **line)
{
return ap_getword_white(atrans, (const char **) line);
}
API_EXPORT(char *) ap_getword_white(ap_context_t *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(ap_context_t *atrans, char **line, char stop)
{
return ap_getword_nulls(atrans, (const char **) line, stop);
}
API_EXPORT(char *) ap_getword_nulls(ap_context_t *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(ap_context_t *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(ap_context_t *p, char **line)
{
return ap_getword_conf(p, (const char **) line);
}
API_EXPORT(char *) ap_getword_conf(ap_context_t *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);
}
static ap_status_t cfg_close(void *param)
{
ap_file_t *cfp = (ap_file_t *) param;
return (ap_close(cfp));
}
static int cfg_getch(void *param)
{
char ch;
ap_file_t *cfp = (ap_file_t *) param;
if (ap_getc(&ch, cfp) == APR_SUCCESS)
return ch;
return (int)EOF;
}
static void *cfg_getstr(void *buf, size_t bufsiz, void *param)
{
ap_file_t *cfp = (ap_file_t *) param;
if (ap_fgets(buf, bufsiz, cfp) == APR_SUCCESS)
return buf;
return NULL;
}
/* Open a configfile_t as FILE, return open configfile_t struct pointer */
API_EXPORT(ap_status_t) ap_pcfg_openfile(configfile_t **ret_cfg, ap_context_t *p, const char *name)
{
configfile_t *new_cfg;
ap_file_t *file = NULL;
ap_finfo_t finfo;
ap_status_t stat;
if (name == NULL) {
ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, 0, NULL,
"Internal error: pcfg_openfile() called with NULL filename");
return APR_EBADF;
}
if (!ap_os_is_filename_valid(name)) {
ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, 0, NULL,
"Access to config file %s denied: not a valid filename",
name);
return APR_EACCES;
}
stat = ap_open(&file, name, APR_READ | APR_BUFFERED, APR_OS_DEFAULT, p);
#ifdef DEBUG
ap_log_error(APLOG_MARK, APLOG_DEBUG | APLOG_NOERRNO, NULL,
"Opening config file %s (%s)",
name, (stat != APR_SUCCESS) ? strerror(errno) : "successful");
#endif
if (stat != APR_SUCCESS)
return stat;
stat = ap_getfileinfo(&finfo, file);
if (stat != APR_SUCCESS)
return stat;
if (finfo.filetype != APR_REG &&
#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 */
ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, 0, NULL,
"Access to file %s denied by server: not a regular file",
name);
ap_close(file);
return APR_EBADF;
}
new_cfg = ap_palloc(p, sizeof(*new_cfg));
new_cfg->param = file;
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;
*ret_cfg = new_cfg;
return APR_SUCCESS;
}
/* Allocate a configfile_t handle with user defined functions and params */
API_EXPORT(configfile_t *) ap_pcfg_open_custom(ap_context_t *p, const char *descr,
void *param,
int(*getch)(void *param),
void *(*getstr) (void *buf, size_t bufsiz, void *param),
int(*close_func)(void *param))
{
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 = (const char *)ptr;
return NULL;
}
/* Advance field pointer to the next non-comma, non-white byte */
while (*ptr == ',' || ap_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.
*/
API_EXPORT(char *) ap_get_list_item(ap_context_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 = 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(ap_context_t *p, const char *line, const char *tok)
{
const unsigned char *pos;
const unsigned char *ptr = (const unsigned char *)line;
int good = 0, addspace = 0, in_qpair = 0, in_qstr = 0, in_com = 0;
if (!line || !tok)
return 0;
do { /* loop for each item in line's list */
/* Find first non-comma, non-whitespace byte */
while (*ptr == ',' || 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(ap_context_t *p, const char **accept_line, int accept_white)
{
const char *ptr = *accept_line;
const char *tok_start;
char *token;
int tok_len;
/* Find first non-white byte */
while (*ptr && 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(ap_context_t *p, const char *line, const char *tok)
{
const unsigned char *start_token;
const unsigned char *s;
if (!line)
return 0;
s = (const unsigned char *)line;
for (;;) {
/* find start of token, skip all stop characters, note NUL
* isn't a token stop, so we don't need to test for it
*/
while (TEST_CHAR(*s, T_HTTP_TOKEN_STOP)) {
++s;
}
if (!*s) {
return 0;
}
start_token = s;
/* find end of the token */
while (*s && !TEST_CHAR(*s, T_HTTP_TOKEN_STOP)) {
++s;
}
if (!strncasecmp((const char *)start_token, (const char *)tok, s - start_token)) {
return 1;
}
if (!*s) {
return 0;
}
}
}
API_EXPORT(int) ap_find_last_token(ap_context_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) && !(ap_isspace(line[lidx - 1]) || line[lidx - 1] == ',')))
return 0;
return (strncasecmp(&line[lidx], tok, tlen) == 0);
}
API_EXPORT(char *) ap_escape_shell_cmd(ap_context_t *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 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 (!ap_isxdigit(*(y + 1)) || !ap_isxdigit(*(y + 2))) {
badesc = 1;
*x = '%';
}
else {
*x = x2c(y + 1);
y += 2;
if (*x == '/' || *x == '\0')
badpath = 1;
}
}
}
*x = '\0';
if (badesc)
return BAD_REQUEST;
else if (badpath)
return NOT_FOUND;
else
return OK;
}
API_EXPORT(char *) ap_construct_server(ap_context_t *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(ap_context_t *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(ap_context_t *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(ap_context_t *p, const char *s)
{
int i, j;
char *x;
/* first, count the number of extra characters */
for (i = 0, j = 0; s[i] != '\0'; i++)
if (s[i] == '<' || s[i] == '>')
j += 3;
else if (s[i] == '&')
j += 4;
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], "&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
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(ap_context_t *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 */
}
#ifndef HAVE_STRDUP
char *strdup(const char *str)
{
char *sdup;
if (!(sdup = (char *) malloc(strlen(str) + 1))) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, "Ouch! Out of memory in our strdup()!");
return NULL;
}
sdup = strcpy(sdup, str);
return sdup;
}
#endif
/* The following two routines were donated for SVR4 by Andreas Vogel */
#ifndef HAVE_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
#ifndef HAVE_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 */
#ifndef HAVE_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
#ifndef HAVE_INITGROUPS
int initgroups(const char *name, gid_t basegid)
{
#if defined(QNX) || defined(MPE) || defined(BEOS) || defined(_OSD_POSIX) || defined(TPF) || defined(__TANDEM) || defined(OS2)
/* 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 */
#ifndef HAVE_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))) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, "%s: bad user name %s", 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))) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, "%s: bad group name %s", 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])) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, "Cannot resolve host name %s --- exiting!", w);
exit(1);
}
if (hep->h_addr_list[1]) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, "Host %s has multiple addresses ---", w);
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, "you must choose one explicitly for use as");
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, "a virtual host. Exiting!!!");
exit(1);
}
if (p != NULL)
*p = ':';
return ((struct in_addr *) (hep->h_addr))->s_addr;
}
static char *find_fqdn(ap_context_t *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(ap_context_t *a)
{
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 256
#endif
char str[MAXHOSTNAMELEN + 1];
char *server_hostname;
struct hostent *p;
#ifdef BEOS
if (gethostname(str, sizeof(str) - 1) == 0)
#else
if (gethostname(str, sizeof(str) - 1) != 0)
#endif
{
perror("Unable to gethostname");
exit(1);
}
str[MAXHOSTNAMELEN] = '\0';
if ((!(p = gethostbyname(str))) || (!(server_hostname = find_fqdn(a, p)))) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
"%s: cannot determine local host name.",
ap_server_argv0);
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
"Use the ServerName directive to set it manually.");
exit(1);
}
return server_hostname;
}
/* simple 'pool' alloc()ing glue to ap_base64.c
*/
API_EXPORT(char *) ap_pbase64decode(ap_context_t *p, const char *bufcoded)
{
char *decoded;
int l;
decoded = (char *) ap_palloc(p, 1 + ap_base64decode_len(bufcoded));
l = ap_base64decode(decoded, bufcoded);
decoded[l] = '\0'; /* make binary sequence into string */
return decoded;
}
API_EXPORT(char *) ap_pbase64encode(ap_context_t *p, char *string)
{
char *encoded;
int l = strlen(string);
encoded = (char *) ap_palloc(p, 1 + ap_base64encode_len(l));
l = ap_base64encode(encoded, string, l);
encoded[l] = '\0'; /* make binary sequence into string */
return encoded;
}
/* deprecated names for the above two functions, here for compatibility
*/
API_EXPORT(char *) ap_uudecode(ap_context_t *p, const char *bufcoded)
{
return ap_pbase64decode(p, bufcoded);
}
API_EXPORT(char *) ap_uuencode(ap_context_t *p, char *string)
{
return ap_pbase64encode(p, string);
}
#ifndef HAVE_STRERROR
char *
strerror(int err)
{
char *p;
extern char *const sys_errlist[];
p = sys_errlist[err];
return (p);
}
#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 (ap_context_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 = 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;
}