/usr/include/proftpd/str.h is in proftpd-dev 1.3.5a-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* ProFTPD - FTP server daemon
* Copyright (c) 2008-2013 The ProFTPD Project team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
*
* As a special exemption, Public Flood Software/MacGyver aka Habeeb J. Dihu
* and other respective copyright holders give permission to link this program
* with OpenSSL, and distribute the resulting executable, without including
* the source code for OpenSSL in the source distribution.
*/
/* String manipulation functions
* $Id: str.h,v 1.11 2013-11-24 00:45:29 castaglia Exp $
*/
#ifndef PR_STR_H
#define PR_STR_H
/* Default maximum number of replacements that will do in a given string. */
#define PR_STR_MAX_REPLACEMENTS 8
char *sstrcat(char *, const char *, size_t);
char *sreplace(pool *, char *, ...);
char *pdircat(pool *, ...);
char *pstrcat(pool *, ...);
char *pstrdup(pool *, const char *);
char *pstrndup(pool *, const char *, size_t);
/* Returns TRUE if the string `s' ends with given `suffix', FALSE if the string
* does not end with the given suffix, and -1 if there was an error (errno
* will be set appropriately).
*
* The `flags' value consisted of OR'ing the following:
*
* PR_STR_FL_IGNORE_CASE
* Request a case-insensitive comparison
*/
int pr_strnrstr(const char *s, size_t slen, const char *suffix,
size_t suffixlen, int flags);
/* Newer version of sreplace(), with more control and better error reporting. */
char *pr_str_replace(pool *, unsigned int, char *, ...);
char *pr_str_strip(pool *, char *);
char *pr_str_strip_end(char *, char *);
int pr_str_get_nbytes(const char *, const char *, off_t *);
char *pr_str_get_word(char **, int);
/* Parses a "time string" into its duration, in seconds. Returns the number
* of seconds obtained via the `duration' pointer, or -1 (with errno) if
* there was a problem parsing the provided string.
*
* A "time string" is formatted as "hh:mm:ss".
*/
int pr_str_get_duration(const char *str, int *duration);
#define PR_STR_FL_PRESERVE_COMMENTS 0x0001
#define PR_STR_FL_PRESERVE_WHITESPACE 0x0002
#define PR_STR_FL_IGNORE_CASE 0x0004
char *pr_str_get_token(char **, char *);
char *pr_str_get_token2(char **, char *, size_t *);
/* Returns TRUE if the given string is "on", "yes", "true", or "1"; returns
* FALSE if the string is "off", "false", "no", or "0". Otherwise, -1
* is returned, with errno set to EINVAL.
*/
int pr_str_is_boolean(const char *);
int pr_str_is_fnmatch(const char *);
#define CHOP(s) pr_str_strip_end((s), "\r\n")
#endif /* PR_STR_H */
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