1 /* ====================================================================
2 * Copyright (c) 1995-1999 The Apache Group. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the Apache Group
19 * for use in the Apache HTTP server project (http://www.apache.org/)."
21 * 4. The names "Apache Server" and "Apache Group" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
26 * 5. Products derived from this software may not be called "Apache"
27 * nor may "Apache" appear in their names without prior written
28 * permission of the Apache Group.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the Apache Group
33 * for use in the Apache HTTP server project (http://www.apache.org/)."
35 * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Group and was originally based
51 * on public domain software written at the National Center for
52 * Supercomputing Applications, University of Illinois, Urbana-Champaign.
53 * For more information on the Apache Group and the Apache HTTP server
54 * project, please see <http://www.apache.org/>.
59 * util.c: string utility things
62 * 1995-96 Many changes by the Apache Group
67 * #define DEBUG to trace all cfg_open*()/cfg_closefile() calls
68 * #define DEBUG_CFG_LINES to trace every line read from the config files
72 #include "http_main.h"
74 #include "http_protocol.h"
76 /* stdio.h has been read in ap_config.h already. Add missing prototypes here: */
77 extern int fgetc(FILE *);
78 extern char *fgets(char *s, int, FILE*);
79 extern int fclose(FILE *);
82 /* A bunch of functions in util.c scan strings looking for certain characters.
83 * To make that more efficient we encode a lookup table. The test_char_table
84 * is generated automatically by gen_test_char.c.
86 #include "test_char.h"
88 /* we assume the folks using this ensure 0 <= c < 256... which means
89 * you need a cast to (unsigned char) first, you can't just plug a
90 * char in here and get it to work, because if char is signed then it
91 * will first be sign extended.
93 #define TEST_CHAR(c, f) (test_char_table[(unsigned)(c)] & (f))
95 void ap_util_init(void)
97 /* nothing to do... previously there was run-time initialization of
98 * test_char_table here
103 API_VAR_EXPORT const char ap_month_snames[12][4] =
105 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
107 API_VAR_EXPORT const char ap_day_snames[7][4] =
109 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
112 API_EXPORT(char *) ap_get_time()
114 /* ZZZ When we abstract out time, this whole function should change to use
120 time_string = ctime(&t);
121 time_string[strlen(time_string) - 1] = '\0';
122 return (time_string);
126 * Examine a field value (such as a media-/content-type) string and return
127 * it sans any parameters; e.g., strip off any ';charset=foo' and the like.
129 API_EXPORT(char *) ap_field_noparam(ap_context_t *p, const char *intype)
133 semi = strchr(intype, ';');
135 return ap_pstrdup(p, intype);
138 while ((semi > intype) && ap_isspace(semi[-1])) {
141 return ap_pstrndup(p, intype, semi - intype);
145 API_EXPORT(char *) ap_ht_time(ap_context_t *p, time_t t, const char *fmt, int gmt)
147 /* ZZZ this function can be replaced by calls to time formatting routines
149 char ts[MAX_STRING_LEN];
150 char tf[MAX_STRING_LEN];
153 tms = (gmt ? gmtime(&t) : localtime(&t));
155 /* Convert %Z to "GMT" and %z to "+0000";
156 * on hosts that do not have a time zone string in struct tm,
157 * strftime must assume its argument is local time.
161 for(strp = tf, f = fmt; strp < tf + sizeof(tf) - 6 && (*strp = *f)
163 if (*f != '%') continue;
174 case 'z': /* common extension */
188 /* check return code? */
189 strftime(ts, MAX_STRING_LEN, fmt, tms);
190 ts[MAX_STRING_LEN - 1] = '\0';
191 return ap_pstrdup(p, ts);
194 API_EXPORT(char *) ap_gm_timestr_822(ap_context_t *p, time_t sec)
197 char *date_str = ap_palloc(p, 48 * sizeof(char));
198 char *date_str_ptr = date_str;
201 tms = gmtime(&sec); /* ZZZ replace with AP time routine */
203 /* Assumption: this is always 3 */
204 /* i = strlen(ap_day_snames[tms->tm_wday]); */
205 memcpy(date_str_ptr, ap_day_snames[tms->tm_wday], 3);
207 *date_str_ptr++ = ',';
208 *date_str_ptr++ = ' ';
209 *date_str_ptr++ = tms->tm_mday / 10 + '0';
210 *date_str_ptr++ = tms->tm_mday % 10 + '0';
211 *date_str_ptr++ = ' ';
212 /* Assumption: this is also always 3 */
213 /* i = strlen(ap_month_snames[tms->tm_mon]); */
214 memcpy(date_str_ptr, ap_month_snames[tms->tm_mon], 3);
216 *date_str_ptr++ = ' ';
217 real_year = 1900 + tms->tm_year;
218 /* This routine isn't y10k ready. */
219 *date_str_ptr++ = real_year / 1000 + '0';
220 *date_str_ptr++ = real_year % 1000 / 100 + '0';
221 *date_str_ptr++ = real_year % 100 / 10 + '0';
222 *date_str_ptr++ = real_year % 10 + '0';
223 *date_str_ptr++ = ' ';
224 *date_str_ptr++ = tms->tm_hour / 10 + '0';
225 *date_str_ptr++ = tms->tm_hour % 10 + '0';
226 *date_str_ptr++ = ':';
227 *date_str_ptr++ = tms->tm_min / 10 + '0';
228 *date_str_ptr++ = tms->tm_min % 10 + '0';
229 *date_str_ptr++ = ':';
230 *date_str_ptr++ = tms->tm_sec / 10 + '0';
231 *date_str_ptr++ = tms->tm_sec % 10 + '0';
232 *date_str_ptr++ = ' ';
233 *date_str_ptr++ = 'G';
234 *date_str_ptr++ = 'M';
235 *date_str_ptr++ = 'T';
236 *date_str_ptr = '\0';
239 /* RFC date format; as strftime '%a, %d %b %Y %T GMT' */
241 /* The equivalent using sprintf. Use this for more legible but slower code
242 return ap_psprintf(p,
243 "%s, %.2d %s %d %.2d:%.2d:%.2d GMT", ap_day_snames[tms->tm_wday],
244 tms->tm_mday, ap_month_snames[tms->tm_mon], tms->tm_year + 1900,
245 tms->tm_hour, tms->tm_min, tms->tm_sec);
249 /* What a pain in the ass. */
250 #if defined(HAVE_GMTOFF)
251 API_EXPORT(struct tm *) ap_get_gmtoff(int *tz)
253 time_t tt = time(NULL);
257 *tz = (int) (t->tm_gmtoff / 60);
261 API_EXPORT(struct tm *) ap_get_gmtoff(int *tz)
263 time_t tt = time(NULL);
266 int days, hours, minutes;
268 /* Assume we are never more than 24 hours away. */
269 gmt = *gmtime(&tt); /* remember gmtime/localtime return ptr to static */
270 t = localtime(&tt); /* buffer... so be careful */
271 days = t->tm_yday - gmt.tm_yday;
272 hours = ((days < -1 ? 24 : 1 < days ? -24 : days * 24)
273 + t->tm_hour - gmt.tm_hour);
274 minutes = hours * 60 + t->tm_min - gmt.tm_min;
280 /* Roy owes Rob beer. */
281 /* Rob owes Roy dinner. */
283 /* These legacy comments would make a lot more sense if Roy hadn't
284 * replaced the old later_than() routine with util_date.c.
286 * Well, okay, they still wouldn't make any sense.
289 /* Match = 0, NoMatch = 1, Abort = -1
290 * Based loosely on sections of wildmat.c by Rich Salz
291 * Hmmm... shouldn't this really go component by component?
293 API_EXPORT(int) ap_strcmp_match(const char *str, const char *exp)
297 for (x = 0, y = 0; exp[y]; ++y, ++x) {
298 if ((!str[x]) && (exp[y] != '*'))
301 while (exp[++y] == '*');
306 if ((ret = ap_strcmp_match(&str[x++], &exp[y])) != 1)
311 else if ((exp[y] != '?') && (str[x] != exp[y]))
314 return (str[x] != '\0');
317 API_EXPORT(int) ap_strcasecmp_match(const char *str, const char *exp)
321 for (x = 0, y = 0; exp[y]; ++y, ++x) {
322 if ((!str[x]) && (exp[y] != '*'))
325 while (exp[++y] == '*');
330 if ((ret = ap_strcasecmp_match(&str[x++], &exp[y])) != 1)
335 else if ((exp[y] != '?') && (ap_tolower(str[x]) != ap_tolower(exp[y])))
338 return (str[x] != '\0');
341 API_EXPORT(int) ap_is_matchexp(const char *str)
345 for (x = 0; str[x]; x++)
346 if ((str[x] == '*') || (str[x] == '?'))
352 * Here's a pool-based interface to POSIX regex's regcomp().
353 * Note that we return regex_t instead of being passed one.
354 * The reason is that if you use an already-used regex_t structure,
355 * the memory that you've already allocated gets forgotten, and
356 * regfree() doesn't clear it. So we don't allow it.
359 static ap_status_t regex_cleanup(void *preg)
361 regfree((regex_t *) preg);
365 API_EXPORT(regex_t *) ap_pregcomp(ap_context_t *p, const char *pattern,
368 regex_t *preg = ap_palloc(p, sizeof(regex_t));
370 if (regcomp(preg, pattern, cflags)) {
374 ap_register_cleanup(p, (void *) preg, regex_cleanup, regex_cleanup);
379 API_EXPORT(void) ap_pregfree(ap_context_t *p, regex_t * reg)
383 ap_kill_cleanup(p, (void *) reg, regex_cleanup);
388 * Apache stub function for the regex libraries regexec() to make sure the
389 * whole regex(3) API is available through the Apache (exported) namespace.
390 * This is especially important for the DSO situations of modules.
391 * DO NOT MAKE A MACRO OUT OF THIS FUNCTION!
393 API_EXPORT(int) ap_regexec(const regex_t *preg, const char *string,
394 size_t nmatch, regmatch_t pmatch[], int eflags)
396 return regexec(preg, string, nmatch, pmatch, eflags);
399 API_EXPORT(size_t) ap_regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
401 return regerror(errcode, preg, errbuf, errbuf_size);
405 /* This function substitutes for $0-$9, filling in regular expression
406 * submatches. Pass it the same nmatch and pmatch arguments that you
407 * passed ap_regexec(). pmatch should not be greater than the maximum number
408 * of subexpressions - i.e. one more than the re_nsub member of regex_t.
410 * input should be the string with the $-expressions, source should be the
411 * string that was matched against.
413 * It returns the substituted string, or NULL on error.
415 * Parts of this code are based on Henry Spencer's regsub(), from his
416 * AT&T V8 regexp package.
419 API_EXPORT(char *) ap_pregsub(ap_context_t *p, const char *input, const char *source,
420 size_t nmatch, regmatch_t pmatch[])
422 const char *src = input;
431 return ap_pstrdup(p, src);
433 /* First pass, find the size */
437 while ((c = *src++) != '\0') {
440 else if (c == '$' && ap_isdigit(*src))
445 if (no > 9) { /* Ordinary character. */
446 if (c == '\\' && (*src == '$' || *src == '&'))
450 else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) {
451 len += pmatch[no].rm_eo - pmatch[no].rm_so;
456 dest = dst = ap_pcalloc(p, len + 1);
458 /* Now actually fill in the string */
462 while ((c = *src++) != '\0') {
465 else if (c == '$' && ap_isdigit(*src))
470 if (no > 9) { /* Ordinary character. */
471 if (c == '\\' && (*src == '$' || *src == '&'))
475 else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) {
476 len = pmatch[no].rm_eo - pmatch[no].rm_so;
477 memcpy(dst, source + pmatch[no].rm_so, len);
488 * Parse .. so we don't compromise security
490 API_EXPORT(void) ap_getparents(char *name)
494 /* Four paseses, as per RFC 1808 */
495 /* a) remove ./ path segments */
497 for (l = 0, w = 0; name[l] != '\0';) {
498 if (name[l] == '.' && name[l + 1] == '/' && (l == 0 || name[l - 1] == '/'))
501 name[w++] = name[l++];
504 /* b) remove trailing . path, segment */
505 if (w == 1 && name[0] == '.')
507 else if (w > 1 && name[w - 1] == '.' && name[w - 2] == '/')
511 /* c) remove all xx/../ segments. (including leading ../ and /../) */
514 while (name[l] != '\0') {
515 if (name[l] == '.' && name[l + 1] == '.' && name[l + 2] == '/' &&
516 (l == 0 || name[l - 1] == '/')) {
517 register int m = l + 3, n;
521 while (l >= 0 && name[l] != '/')
528 while ((name[n] = name[m]))
535 /* d) remove trailing xx/.. segment. */
536 if (l == 2 && name[0] == '.' && name[1] == '.')
538 else if (l > 2 && name[l - 1] == '.' && name[l - 2] == '.' && name[l - 3] == '/') {
541 while (l >= 0 && name[l] != '/')
551 API_EXPORT(void) ap_no2slash(char *name)
558 /* Check for UNC names. Leave leading two slashes. */
559 if (s[0] == '/' && s[1] == '/')
564 if ((*d++ = *s) == '/') {
578 * copy at most n leading directories of s into d
579 * d should be at least as large as s plus 1 extra byte
581 * the return value is the ever useful pointer to the trailing \0 of d
589 API_EXPORT(char *) ap_make_dirstr_prefix(char *d, const char *s, int n)
592 if (*s == '\0' || (*s == '/' && (--n) == 0)) {
604 * return the parent directory name including trailing / of the file s
606 API_EXPORT(char *) ap_make_dirstr_parent(ap_context_t *p, const char *s)
608 char *last_slash = strrchr(s, '/');
612 if (last_slash == NULL) {
613 /* XXX: well this is really broken if this happens */
614 return (ap_pstrdup(p, "/"));
616 l = (last_slash - s) + 1;
617 d = ap_palloc(p, l + 1);
625 * This function is deprecated. Use one of the preceeding two functions
628 API_EXPORT(char *) ap_make_dirstr(ap_context_t *p, const char *s, int n)
633 for (x = 0, f = 0; s[x]; x++) {
636 res = ap_palloc(p, x + 2);
644 if (s[strlen(s) - 1] == '/')
645 return ap_pstrdup(p, s);
647 return ap_pstrcat(p, s, "/", NULL);
650 API_EXPORT(int) ap_count_dirs(const char *path)
654 for (x = 0, n = 0; path[x]; x++)
661 API_EXPORT(void) ap_chdir_file(const char *file)
664 char buf[HUGE_STRING_LEN];
666 x = strrchr(file, '/');
670 else if (x - file < sizeof(buf) - 1) {
671 memcpy(buf, file, x - file);
672 buf[x - file] = '\0';
675 /* XXX: well, this is a silly function, no method of reporting an
676 * error... ah well. */
679 API_EXPORT(char *) ap_getword_nc(ap_context_t *atrans, char **line, char stop)
681 return ap_getword(atrans, (const char **) line, stop);
684 API_EXPORT(char *) ap_getword(ap_context_t *atrans, const char **line, char stop)
686 char *pos = strchr(*line, stop);
690 res = ap_pstrdup(atrans, *line);
691 *line += strlen(*line);
695 res = ap_pstrndup(atrans, *line, pos - *line);
697 while (*pos == stop) {
706 API_EXPORT(char *) ap_getword_white_nc(ap_context_t *atrans, char **line)
708 return ap_getword_white(atrans, (const char **) line);
711 API_EXPORT(char *) ap_getword_white(ap_context_t *atrans, const char **line)
716 for (x = 0; (*line)[x]; x++) {
717 if (ap_isspace((*line)[x])) {
724 res = ap_pstrdup(atrans, *line);
725 *line += strlen(*line);
729 res = ap_palloc(atrans, pos + 1);
730 ap_cpystrn(res, *line, pos + 1);
732 while (ap_isspace((*line)[pos]))
740 API_EXPORT(char *) ap_getword_nulls_nc(ap_context_t *atrans, char **line, char stop)
742 return ap_getword_nulls(atrans, (const char **) line, stop);
745 API_EXPORT(char *) ap_getword_nulls(ap_context_t *atrans, const char **line, char stop)
747 char *pos = strchr(*line, stop);
751 res = ap_pstrdup(atrans, *line);
752 *line += strlen(*line);
756 res = ap_pstrndup(atrans, *line, pos - *line);
765 /* Get a word, (new) config-file style --- quoted strings and backslashes
769 static char *substring_conf(ap_context_t *p, const char *start, int len, char quote)
771 char *result = ap_palloc(p, len + 2);
775 for (i = 0; i < len; ++i) {
776 if (start[i] == '\\' && (start[i + 1] == '\\'
777 || (quote && start[i + 1] == quote)))
778 *resp++ = start[++i];
787 API_EXPORT(char *) ap_getword_conf_nc(ap_context_t *p, char **line)
789 return ap_getword_conf(p, (const char **) line);
792 API_EXPORT(char *) ap_getword_conf(ap_context_t *p, const char **line)
794 const char *str = *line, *strend;
798 while (*str && ap_isspace(*str))
806 if ((quote = *str) == '"' || quote == '\'') {
808 while (*strend && *strend != quote) {
809 if (*strend == '\\' && strend[1] && strend[1] == quote)
814 res = substring_conf(p, str + 1, strend - str - 1, quote);
816 if (*strend == quote)
821 while (*strend && !ap_isspace(*strend))
824 res = substring_conf(p, str, strend - str, 0);
827 while (*strend && ap_isspace(*strend))
833 API_EXPORT(int) ap_cfg_closefile(configfile_t *cfp)
836 ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, NULL,
837 "Done with config file %s", cfp->name);
839 return (cfp->close == NULL) ? 0 : cfp->close(cfp->param);
842 static ap_status_t cfg_close(void *param)
844 ap_file_t *cfp = (ap_file_t *) param;
845 return (ap_close(cfp));
848 static int cfg_getch(void *param)
851 ap_file_t *cfp = (ap_file_t *) param;
852 if (ap_getc(cfp, &ch) == APR_SUCCESS)
857 static void *cfg_getstr(void *buf, size_t bufsiz, void *param)
859 ap_file_t *cfp = (ap_file_t *) param;
860 if (ap_gets(cfp, buf, bufsiz) == APR_SUCCESS)
865 /* Open a configfile_t as FILE, return open configfile_t struct pointer */
866 API_EXPORT(configfile_t *) ap_pcfg_openfile(ap_context_t *p, const char *name)
868 configfile_t *new_cfg;
875 ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, NULL,
876 "Internal error: pcfg_openfile() called with NULL filename");
880 if (!ap_os_is_filename_valid(name)) {
881 ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, NULL,
882 "Access to config file %s denied: not a valid filename",
888 stat = ap_open(&file, p, name, APR_READ | APR_BUFFERED, APR_OS_DEFAULT);
891 ap_log_error(APLOG_MARK, APLOG_DEBUG | APLOG_NOERRNO, NULL,
892 "Opening config file %s (%s)",
893 name, (stat != APR_SUCCESS) ? strerror(errno) : "successful");
896 if (stat != APR_SUCCESS)
899 if (ap_get_filetype(file, &type) == APR_SUCCESS &&
901 #if defined(WIN32) || defined(OS2)
902 !(strcasecmp(name, "nul") == 0 ||
903 (strlen(name) >= 4 &&
904 strcasecmp(name + strlen(name) - 4, "/nul") == 0))) {
906 strcmp(name, "/dev/null") != 0) {
907 #endif /* WIN32 || OS2 */
909 ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, NULL,
910 "Access to file %s denied by server: not a regular file",
917 new_cfg = ap_palloc(p, sizeof(*new_cfg));
918 new_cfg->param = file;
919 new_cfg->name = ap_pstrdup(p, name);
920 new_cfg->getch = (int (*)(void *)) cfg_getch;
921 new_cfg->getstr = (void *(*)(void *, size_t, void *)) cfg_getstr;
922 new_cfg->close = (int (*)(void *)) cfg_close;
923 new_cfg->line_number = 0;
928 /* Allocate a configfile_t handle with user defined functions and params */
929 API_EXPORT(configfile_t *) ap_pcfg_open_custom(ap_context_t *p, const char *descr,
931 int(*getch)(void *param),
932 void *(*getstr) (void *buf, size_t bufsiz, void *param),
933 int(*close_func)(void *param))
935 configfile_t *new_cfg = ap_palloc(p, sizeof(*new_cfg));
937 ap_log_error(APLOG_MARK, APLOG_DEBUG | APLOG_NOERRNO, NULL, "Opening config handler %s", descr);
939 new_cfg->param = param;
940 new_cfg->name = descr;
941 new_cfg->getch = getch;
942 new_cfg->getstr = getstr;
943 new_cfg->close = close_func;
944 new_cfg->line_number = 0;
949 /* Read one character from a configfile_t */
950 API_EXPORT(int) ap_cfg_getc(configfile_t *cfp)
952 register int ch = cfp->getch(cfp->param);
959 /* Read one line from open configfile_t, strip LF, increase line number */
960 /* If custom handler does not define a getstr() function, read char by char */
961 API_EXPORT(int) ap_cfg_getline(char *buf, size_t bufsize, configfile_t *cfp)
963 /* If a "get string" function is defined, use it */
964 if (cfp->getstr != NULL) {
968 size_t cbufsize = bufsize;
972 if (cfp->getstr(cbuf, cbufsize, cfp->param) == NULL)
976 * check for line continuation,
977 * i.e. match [^\\]\\[\r]\n only
980 while (cp < cbuf+cbufsize && *cp != '\0')
982 if (cp > cbuf && cp[-1] == LF) {
984 if (cp > cbuf && cp[-1] == CR)
986 if (cp > cbuf && cp[-1] == '\\') {
988 if (!(cp > cbuf && cp[-1] == '\\')) {
990 * line continuation requested -
991 * then remove backslash and continue
993 cbufsize -= (cp-cbuf);
999 * no real continuation because escaped -
1000 * then just remove escape character
1002 for ( ; cp < cbuf+cbufsize && *cp != '\0'; cp++)
1011 * Leading and trailing white space is eliminated completely
1014 while (ap_isspace(*src))
1016 /* blast trailing whitespace */
1017 dst = &src[strlen(src)];
1018 while (--dst >= src && ap_isspace(*dst))
1020 /* Zap leading whitespace by shifting */
1022 for (dst = buf; (*dst++ = *src++) != '\0'; )
1025 #ifdef DEBUG_CFG_LINES
1026 ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, NULL, "Read config: %s", buf);
1030 /* No "get string" function defined; read character by character */
1032 register size_t i = 0;
1035 /* skip leading whitespace */
1037 c = cfp->getch(cfp->param);
1038 } while (c == '\t' || c == ' ');
1044 /* too small, assume caller is crazy */
1049 if ((c == '\t') || (c == ' ')) {
1051 while ((c == '\t') || (c == ' '))
1052 c = cfp->getch(cfp->param);
1055 /* silently ignore CR (_assume_ that a LF follows) */
1056 c = cfp->getch(cfp->param);
1059 /* increase line number and return on LF */
1062 if (c == EOF || c == 0x4 || c == LF || i >= (bufsize - 2)) {
1064 * check for line continuation
1066 if (i > 0 && buf[i-1] == '\\') {
1068 if (!(i > 0 && buf[i-1] == '\\')) {
1069 /* line is continued */
1070 c = cfp->getch(cfp->param);
1073 /* else nothing needs be done because
1074 * then the backslash is escaped and
1075 * we just strip to a single one
1078 /* blast trailing whitespace */
1079 while (i > 0 && ap_isspace(buf[i - 1]))
1082 #ifdef DEBUG_CFG_LINES
1083 ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, NULL, "Read config: %s", buf);
1089 c = cfp->getch(cfp->param);
1094 /* Size an HTTP header field list item, as separated by a comma.
1095 * The return value is a pointer to the beginning of the non-empty list item
1096 * within the original string (or NULL if there is none) and the address
1097 * of field is shifted to the next non-comma, non-whitespace character.
1098 * len is the length of the item excluding any beginning whitespace.
1100 API_EXPORT(const char *) ap_size_list_item(const char **field, int *len)
1102 const unsigned char *ptr = (const unsigned char *)*field;
1103 const unsigned char *token;
1104 int in_qpair, in_qstr, in_com;
1106 /* Find first non-comma, non-whitespace byte */
1108 while (*ptr == ',' || ap_isspace(*ptr))
1113 /* Find the end of this item, skipping over dead bits */
1115 for (in_qpair = in_qstr = in_com = 0;
1116 *ptr && (in_qpair || in_qstr || in_com || *ptr != ',');
1124 case '\\': in_qpair = 1; /* quoted-pair */
1126 case '"' : if (!in_com) /* quoted string delim */
1129 case '(' : if (!in_qstr) /* comment (may nest) */
1132 case ')' : if (in_com) /* end comment */
1140 if ((*len = (ptr - token)) == 0) {
1141 *field = (const char *)ptr;
1145 /* Advance field pointer to the next non-comma, non-white byte */
1147 while (*ptr == ',' || ap_isspace(*ptr))
1150 *field = (const char *)ptr;
1151 return (const char *)token;
1154 /* Retrieve an HTTP header field list item, as separated by a comma,
1155 * while stripping insignificant whitespace and lowercasing anything not in
1156 * a quoted string or comment. The return value is a new string containing
1157 * the converted list item (or NULL if none) and the address pointed to by
1158 * field is shifted to the next non-comma, non-whitespace.
1160 API_EXPORT(char *) ap_get_list_item(ap_context_t *p, const char **field)
1162 const char *tok_start;
1163 const unsigned char *ptr;
1166 int addspace = 0, in_qpair = 0, in_qstr = 0, in_com = 0, tok_len = 0;
1168 /* Find the beginning and maximum length of the list item so that
1169 * we can allocate a buffer for the new string and reset the field.
1171 if ((tok_start = ap_size_list_item(field, &tok_len)) == NULL) {
1174 token = ap_palloc(p, tok_len + 1);
1176 /* Scan the token again, but this time copy only the good bytes.
1177 * We skip extra whitespace and any whitespace around a '=', '/',
1178 * or ';' and lowercase normal characters not within a comment,
1179 * quoted-string or quoted-pair.
1181 for (ptr = (const unsigned char *)tok_start, pos = (unsigned char *)token;
1182 *ptr && (in_qpair || in_qstr || in_com || *ptr != ',');
1191 case '\\': in_qpair = 1;
1197 case '"' : if (!in_com)
1204 case '(' : if (!in_qstr)
1211 case ')' : if (in_com)
1217 case '\t': if (addspace)
1219 if (in_com || in_qstr)
1226 case ';' : if (!(in_com || in_qstr))
1230 default : if (addspace == 1)
1232 *pos++ = (in_com || in_qstr) ? *ptr
1244 /* Find an item in canonical form (lowercase, no extra spaces) within
1245 * an HTTP field value list. Returns 1 if found, 0 if not found.
1246 * This would be much more efficient if we stored header fields as
1247 * an array of list items as they are received instead of a plain string.
1249 API_EXPORT(int) ap_find_list_item(ap_context_t *p, const char *line, const char *tok)
1251 const unsigned char *pos;
1252 const unsigned char *ptr = (const unsigned char *)line;
1253 int good = 0, addspace = 0, in_qpair = 0, in_qstr = 0, in_com = 0;
1258 do { /* loop for each item in line's list */
1260 /* Find first non-comma, non-whitespace byte */
1262 while (*ptr == ',' || ap_isspace(*ptr))
1266 good = 1; /* until proven otherwise for this item */
1268 break; /* no items left and nothing good found */
1270 /* We skip extra whitespace and any whitespace around a '=', '/',
1271 * or ';' and lowercase normal characters not within a comment,
1272 * quoted-string or quoted-pair.
1274 for (pos = (const unsigned char *)tok;
1275 *ptr && (in_qpair || in_qstr || in_com || *ptr != ',');
1281 good = (*pos++ == *ptr);
1285 case '\\': in_qpair = 1;
1287 good = good && (*pos++ == ' ');
1288 good = good && (*pos++ == *ptr);
1291 case '"' : if (!in_com)
1294 good = good && (*pos++ == ' ');
1295 good = good && (*pos++ == *ptr);
1298 case '(' : if (!in_qstr)
1301 good = good && (*pos++ == ' ');
1302 good = good && (*pos++ == *ptr);
1305 case ')' : if (in_com)
1307 good = good && (*pos++ == *ptr);
1311 case '\t': if (addspace || !good)
1313 if (in_com || in_qstr)
1314 good = (*pos++ == *ptr);
1320 case ';' : if (!(in_com || in_qstr))
1322 good = good && (*pos++ == *ptr);
1324 default : if (!good)
1327 good = (*pos++ == ' ');
1328 if (in_com || in_qstr)
1329 good = good && (*pos++ == *ptr);
1331 good = good && (*pos++ == ap_tolower(*ptr));
1338 good = 0; /* not good if only a prefix was matched */
1340 } while (*ptr && !good);
1346 /* Retrieve a token, spacing over it and returning a pointer to
1347 * the first non-white byte afterwards. Note that these tokens
1348 * are delimited by semis and commas; and can also be delimited
1349 * by whitespace at the caller's option.
1352 API_EXPORT(char *) ap_get_token(ap_context_t *p, const char **accept_line, int accept_white)
1354 const char *ptr = *accept_line;
1355 const char *tok_start;
1359 /* Find first non-white byte */
1361 while (*ptr && ap_isspace(*ptr))
1366 /* find token end, skipping over quoted strings.
1367 * (comments are already gone).
1370 while (*ptr && (accept_white || !ap_isspace(*ptr))
1371 && *ptr != ';' && *ptr != ',') {
1378 tok_len = ptr - tok_start;
1379 token = ap_pstrndup(p, tok_start, tok_len);
1381 /* Advance accept_line pointer to the next non-white byte */
1383 while (*ptr && ap_isspace(*ptr))
1391 /* find http tokens, see the definition of token from RFC2068 */
1392 API_EXPORT(int) ap_find_token(ap_context_t *p, const char *line, const char *tok)
1394 const unsigned char *start_token;
1395 const unsigned char *s;
1400 s = (const unsigned char *)line;
1402 /* find start of token, skip all stop characters, note NUL
1403 * isn't a token stop, so we don't need to test for it
1405 while (TEST_CHAR(*s, T_HTTP_TOKEN_STOP)) {
1412 /* find end of the token */
1413 while (*s && !TEST_CHAR(*s, T_HTTP_TOKEN_STOP)) {
1416 if (!strncasecmp((const char *)start_token, (const char *)tok, s - start_token)) {
1426 API_EXPORT(int) ap_find_last_token(ap_context_t *p, const char *line, const char *tok)
1428 int llen, tlen, lidx;
1433 llen = strlen(line);
1438 ((lidx > 0) && !(ap_isspace(line[lidx - 1]) || line[lidx - 1] == ',')))
1441 return (strncasecmp(&line[lidx], tok, tlen) == 0);
1444 API_EXPORT(char *) ap_escape_shell_cmd(ap_context_t *p, const char *str)
1448 const unsigned char *s;
1450 cmd = ap_palloc(p, 2 * strlen(str) + 1); /* Be safe */
1451 d = (unsigned char *)cmd;
1452 s = (const unsigned char *)str;
1455 #if defined(OS2) || defined(WIN32)
1456 /* Don't allow '&' in parameters under OS/2. */
1457 /* This can be used to send commands to the shell. */
1464 if (TEST_CHAR(*s, T_ESCAPE_SHELL_CMD)) {
1474 static char x2c(const char *what)
1476 register char digit;
1478 #ifndef CHARSET_EBCDIC
1479 digit = ((what[0] >= 'A') ? ((what[0] & 0xdf) - 'A') + 10 : (what[0] - '0'));
1481 digit += (what[1] >= 'A' ? ((what[1] & 0xdf) - 'A') + 10 : (what[1] - '0'));
1482 #else /*CHARSET_EBCDIC*/
1489 digit = os_toebcdic[0xFF & strtol(xstr, NULL, 16)];
1490 #endif /*CHARSET_EBCDIC*/
1496 * Returns 0 on success, non-zero on error
1498 * bad % escape returns BAD_REQUEST
1500 * decoding %00 -> \0
1501 * decoding %2f -> / (a special character)
1504 API_EXPORT(int) ap_unescape_url(char *url)
1506 register int badesc, badpath;
1511 /* Initial scan for first '%'. Don't bother writing values before
1513 y = strchr(url, '%');
1517 for (x = y; *y; ++x, ++y) {
1521 if (!ap_isxdigit(*(y + 1)) || !ap_isxdigit(*(y + 2))) {
1528 if (*x == '/' || *x == '\0')
1542 API_EXPORT(char *) ap_construct_server(ap_context_t *p, const char *hostname,
1543 unsigned port, const request_rec *r)
1545 if (ap_is_default_port(port, r))
1546 return ap_pstrdup(p, hostname);
1548 return ap_psprintf(p, "%s:%u", hostname, port);
1552 /* c2x takes an unsigned, and expects the caller has guaranteed that
1553 * 0 <= what < 256... which usually means that you have to cast to
1554 * unsigned char first, because (unsigned)(char)(x) fist goes through
1555 * signed extension to an int before the unsigned cast.
1557 * The reason for this assumption is to assist gcc code generation --
1558 * the unsigned char -> unsigned extension is already done earlier in
1559 * both uses of this code, so there's no need to waste time doing it
1562 static const char c2x_table[] = "0123456789abcdef";
1564 static ap_inline unsigned char *c2x(unsigned what, unsigned char *where)
1567 *where++ = c2x_table[what >> 4];
1568 *where++ = c2x_table[what & 0xf];
1573 * escape_path_segment() escapes a path segment, as defined in RFC 1808. This
1574 * routine is (should be) OS independent.
1576 * os_escape_path() converts an OS path to a URL, in an OS dependent way. In all
1577 * cases if a ':' occurs before the first '/' in the URL, the URL should be
1578 * prefixed with "./" (or the ':' escaped). In the case of Unix, this means
1579 * leaving '/' alone, but otherwise doing what escape_path_segment() does. For
1580 * efficiency reasons, we don't use escape_path_segment(), which is provided for
1581 * reference. Again, RFC 1808 is where this stuff is defined.
1583 * If partial is set, os_escape_path() assumes that the path will be appended to
1584 * something with a '/' in it (and thus does not prefix "./").
1587 API_EXPORT(char *) ap_escape_path_segment(ap_context_t *p, const char *segment)
1589 char *copy = ap_palloc(p, 3 * strlen(segment) + 1);
1590 const unsigned char *s = (const unsigned char *)segment;
1591 unsigned char *d = (unsigned char *)copy;
1595 if (TEST_CHAR(c, T_ESCAPE_PATH_SEGMENT)) {
1607 API_EXPORT(char *) ap_os_escape_path(ap_context_t *p, const char *path, int partial)
1609 char *copy = ap_palloc(p, 3 * strlen(path) + 3);
1610 const unsigned char *s = (const unsigned char *)path;
1611 unsigned char *d = (unsigned char *)copy;
1615 char *colon = strchr(path, ':');
1616 char *slash = strchr(path, '/');
1618 if (colon && (!slash || colon < slash)) {
1624 if (TEST_CHAR(c, T_OS_ESCAPE_PATH)) {
1636 /* ap_escape_uri is now a macro for os_escape_path */
1638 API_EXPORT(char *) ap_escape_html(ap_context_t *p, const char *s)
1643 /* first, count the number of extra characters */
1644 for (i = 0, j = 0; s[i] != '\0'; i++)
1645 if (s[i] == '<' || s[i] == '>')
1647 else if (s[i] == '&')
1651 return ap_pstrndup(p, s, i);
1653 x = ap_palloc(p, i + j + 1);
1654 for (i = 0, j = 0; s[i] != '\0'; i++, j++)
1656 memcpy(&x[j], "<", 4);
1659 else if (s[i] == '>') {
1660 memcpy(&x[j], ">", 4);
1663 else if (s[i] == '&') {
1664 memcpy(&x[j], "&", 5);
1674 API_EXPORT(int) ap_is_directory(const char *path)
1678 /* ZZZ replace with AP File Info func. */
1679 if (stat(path, &finfo) == -1)
1680 return 0; /* in error condition, just return no */
1682 return (S_ISDIR(finfo.st_mode));
1685 API_EXPORT(char *) ap_make_full_path(ap_context_t *a, const char *src1,
1692 return ap_pstrcat(a, "/", src2, NULL);
1694 if (src1[x - 1] != '/')
1695 return ap_pstrcat(a, src1, "/", src2, NULL);
1697 return ap_pstrcat(a, src1, src2, NULL);
1701 * Check for an absoluteURI syntax (see section 3.2 in RFC2068).
1703 API_EXPORT(int) ap_is_url(const char *u)
1707 for (x = 0; u[x] != ':'; x++) {
1709 ((!ap_isalpha(u[x])) && (!ap_isdigit(u[x])) &&
1710 (u[x] != '+') && (u[x] != '-') && (u[x] != '.'))) {
1715 return (x ? 1 : 0); /* If the first character is ':', it's broken, too */
1719 char *strdup(const char *str)
1723 if (!(sdup = (char *) malloc(strlen(str) + 1))) {
1724 fprintf(stderr, "Ouch! Out of memory in our strdup()!\n");
1727 sdup = strcpy(sdup, str);
1733 /* The following two routines were donated for SVR4 by Andreas Vogel */
1734 #ifdef NEED_STRCASECMP
1735 int strcasecmp(const char *a, const char *b)
1739 for (p = a, q = b; *p && *q; p++, q++) {
1740 int diff = ap_tolower(*p) - ap_tolower(*q);
1745 return 1; /* p was longer than q */
1747 return -1; /* p was shorter than q */
1748 return 0; /* Exact match */
1753 #ifdef NEED_STRNCASECMP
1754 int strncasecmp(const char *a, const char *b, int n)
1759 for (p = a, q = b; /*NOTHING */ ; p++, q++) {
1762 return 0; /* Match up to n characters */
1765 diff = ap_tolower(*p) - ap_tolower(*q);
1773 /* The following routine was donated for UTS21 by dwd@bell-labs.com */
1775 char *strstr(char *s1, char *s2)
1782 while((s1 = strchr(s1, *s2)) != NULL) {
1783 /* found first character of s2, see if the rest matches */
1786 while (*++p1 == *++p2) {
1788 /* both strings ended together */
1793 /* second string ended, a match */
1796 /* didn't find a match here, try starting at next character in s1 */
1803 #ifdef NEED_INITGROUPS
1804 int initgroups(const char *name, gid_t basegid)
1806 #if defined(QNX) || defined(MPE) || defined(BEOS) || defined(_OSD_POSIX) || defined(TPF) || defined(__TANDEM)
1807 /* QNX, MPE and BeOS do not appear to support supplementary groups. */
1809 #else /* ndef QNX */
1810 gid_t groups[NGROUPS_MAX];
1816 groups[index++] = basegid;
1818 while (index < NGROUPS_MAX && ((g = getgrent()) != NULL))
1819 if (g->gr_gid != basegid) {
1822 for (names = g->gr_mem; *names != NULL; ++names)
1823 if (!strcmp(*names, name))
1824 groups[index++] = g->gr_gid;
1829 return setgroups(index, groups);
1830 #endif /* def QNX */
1832 #endif /* def NEED_INITGROUPS */
1835 /* From ikluft@amdahl.com
1836 * this is not ideal but it works for SVR3 variants
1837 * Modified by dwd@bell-labs.com to call wait3 instead of wait because
1838 * apache started to use the WNOHANG option.
1840 int waitpid(pid_t pid, int *statusp, int options)
1843 if (kill(pid, 0) == -1) {
1847 while (((tmp_pid = wait3(statusp, options, 0)) != pid) &&
1848 (tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
1854 API_EXPORT(int) ap_ind(const char *s, char c)
1858 for (x = 0; s[x]; x++)
1865 API_EXPORT(int) ap_rind(const char *s, char c)
1869 for (x = strlen(s) - 1; x != -1; x--)
1876 API_EXPORT(void) ap_str_tolower(char *str)
1879 *str = ap_tolower(*str);
1884 API_EXPORT(uid_t) ap_uname2id(const char *name)
1892 return (atoi(&name[1]));
1894 if (!(ent = getpwnam(name))) {
1895 fprintf(stderr, "%s: bad user name %s\n", ap_server_argv0, name);
1898 return (ent->pw_uid);
1902 API_EXPORT(gid_t) ap_gname2id(const char *name)
1910 return (atoi(&name[1]));
1912 if (!(ent = getgrnam(name))) {
1913 fprintf(stderr, "%s: bad group name %s\n", ap_server_argv0, name);
1916 return (ent->gr_gid);
1922 * Parses a host of the form <address>[:port]
1923 * :port is permitted if 'port' is not NULL
1925 unsigned long ap_get_virthost_addr(char *w, unsigned short *ports)
1927 /* ZZZ Redesign for AP func changes */
1928 struct hostent *hep;
1929 unsigned long my_addr;
1933 if (ports != NULL) {
1935 if (p != NULL && strcmp(p + 1, "*") != 0)
1936 *ports = atoi(p + 1);
1941 if (strcmp(w, "*") == 0) {
1944 return htonl(INADDR_ANY);
1947 my_addr = ap_inet_addr((char *)w);
1948 if (my_addr != INADDR_NONE) {
1954 hep = gethostbyname(w);
1956 if ((!hep) || (hep->h_addrtype != AF_INET || !hep->h_addr_list[0])) {
1957 fprintf(stderr, "Cannot resolve host name %s --- exiting!\n", w);
1961 if (hep->h_addr_list[1]) {
1962 fprintf(stderr, "Host %s has multiple addresses ---\n", w);
1963 fprintf(stderr, "you must choose one explicitly for use as\n");
1964 fprintf(stderr, "a virtual host. Exiting!!!\n");
1971 return ((struct in_addr *) (hep->h_addr))->s_addr;
1975 static char *find_fqdn(ap_context_t *a, struct hostent *p)
1979 if (!strchr(p->h_name, '.')) {
1980 for (x = 0; p->h_aliases[x]; ++x) {
1981 if (strchr(p->h_aliases[x], '.') &&
1982 (!strncasecmp(p->h_aliases[x], p->h_name, strlen(p->h_name))))
1983 return ap_pstrdup(a, p->h_aliases[x]);
1987 return ap_pstrdup(a, (void *) p->h_name);
1990 char *ap_get_local_host(ap_context_t *a)
1992 #ifndef MAXHOSTNAMELEN
1993 #define MAXHOSTNAMELEN 256
1995 char str[MAXHOSTNAMELEN + 1];
1996 char *server_hostname;
1999 /* ZZZ change to use AP funcs. */
2001 if (gethostname(str, sizeof(str) - 1) == 0)
2003 if (gethostname(str, sizeof(str) - 1) != 0)
2006 perror("Unable to gethostname");
2009 str[MAXHOSTNAMELEN] = '\0';
2010 if ((!(p = gethostbyname(str))) || (!(server_hostname = find_fqdn(a, p)))) {
2011 fprintf(stderr, "%s: cannot determine local host name.\n",
2013 fprintf(stderr, "Use the ServerName directive to set it manually.\n");
2017 return server_hostname;
2020 /* simple 'pool' alloc()ing glue to ap_base64.c
2022 API_EXPORT(char *) ap_pbase64decode(ap_context_t *p, const char *bufcoded)
2027 decoded = (char *) ap_palloc(p, 1 + ap_base64decode_len(bufcoded));
2028 l = ap_base64decode(decoded, bufcoded);
2029 decoded[l] = '\0'; /* make binary sequence into string */
2034 API_EXPORT(char *) ap_pbase64encode(ap_context_t *p, char *string)
2037 int l = strlen(string);
2039 encoded = (char *) ap_palloc(p, 1 + ap_base64encode_len(l));
2040 l = ap_base64encode(encoded, string, l);
2041 encoded[l] = '\0'; /* make binary sequence into string */
2046 /* deprecated names for the above two functions, here for compatibility
2048 API_EXPORT(char *) ap_uudecode(ap_context_t *p, const char *bufcoded)
2050 return ap_pbase64decode(p, bufcoded);
2053 API_EXPORT(char *) ap_uuencode(ap_context_t *p, char *string)
2055 return ap_pbase64encode(p, string);
2059 void os2pathname(char *path)
2061 char newpath[MAX_STRING_LEN];
2066 for (loop = 0; loop < (strlen(path) + 1) && loop < sizeof(newpath) - 1; loop++) {
2067 if (path[loop] == '/') {
2068 newpath[offset] = '\\';
2070 offset = offset + 1;
2071 newpath[offset] = '\\';
2075 newpath[offset] = path[loop];
2076 offset = offset + 1;
2078 /* Debugging code */
2079 /* fprintf(stderr, "%s \n", newpath); */
2081 strcpy(path, newpath);
2084 /* quotes in the string are doubled up.
2085 * Used to escape quotes in args passed to OS/2's cmd.exe
2087 char *ap_double_quotes(ap_context_t *p, char *str)
2091 char *quote_doubled_str, *dest;
2094 num_quotes += str[len++] == '\"';
2097 quote_doubled_str = ap_palloc(p, len + num_quotes + 1);
2098 dest = quote_doubled_str;
2103 *(dest++) = *(str++);
2107 return quote_doubled_str;
2112 #ifdef NEED_STRERROR
2118 extern char *const sys_errlist[];
2120 p = sys_errlist[err];
2125 #if defined(NEED_DIFFTIME)
2126 double difftime(time_t time1, time_t time0)
2128 return (time1 - time0);
2132 /* we want to downcase the type/subtype for comparison purposes
2133 * but nothing else because ;parameter=foo values are case sensitive.
2134 * XXX: in truth we want to downcase parameter names... but really,
2135 * apache has never handled parameters and such correctly. You
2136 * also need to compress spaces and such to be able to compare
2139 API_EXPORT(void) ap_content_type_tolower(char *str)
2143 semi = strchr(str, ';');
2148 *str = ap_tolower(*str);
2157 * Given a string, replace any bare " with \" .
2159 API_EXPORT(char *) ap_escape_quotes (ap_context_t *p, const char *instring)
2162 const char *inchr = instring;
2163 char *outchr, *outstring;
2166 * Look through the input string, jogging the length of the output
2167 * string up by an extra byte each time we find an unescaped ".
2169 while (*inchr != '\0') {
2171 if (*inchr == '"') {
2175 * If we find a slosh, and it's not the last byte in the string,
2176 * it's escaping something - advance past both bytes.
2178 if ((*inchr == '\\') && (inchr[1] != '\0')) {
2184 outstring = ap_palloc(p, newlen + 1);
2188 * Now copy the input string to the output string, inserting a slosh
2189 * in front of every " that doesn't already have one.
2191 while (*inchr != '\0') {
2192 if ((*inchr == '\\') && (inchr[1] != '\0')) {
2193 *outchr++ = *inchr++;
2194 *outchr++ = *inchr++;
2196 if (*inchr == '"') {
2199 if (*inchr != '\0') {
2200 *outchr++ = *inchr++;