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/* * ProFTPD - FTP server daemon * Copyright (c) 2008-2017 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 */ #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 /* Per RFC959, directory responses for MKD and PWD should be "dir_name" (with * quotes). For directories that CONTAIN quotes, the additional quotes must * be duplicated. */ const char *quote_dir(pool *p, char *dir); char *sstrcat(char *, const char *, size_t); const char *sreplace(pool *, const 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); /* Returns a quoted version of the given string. */ const char *pr_str_quote(pool *p, const char *str); /* Newer version of sreplace(), with more control and better error reporting. */ const char *pr_str_replace(pool *, unsigned int, const char *, ...); const char *pr_str_strip(pool *, const char *); char *pr_str_strip_end(char *, const 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); /* Encode the given buffer of binary data as a hex string. The flags indicate * whether to use uppercase or lowercase hex values; the default is to use * lowercase values. * * Returns NULL on error, or the successfully encoded string, allocated out of * the given pool, on success. */ char *pr_str_bin2hex(pool *p, const unsigned char *buf, size_t len, int flags); #define PR_STR_FL_HEX_USE_UC 0x0001 #define PR_STR_FL_HEX_USE_LC 0x0002 /* Decodes the given buffer of hex-encoded data into binary data. */ unsigned char *pr_str_hex2bin(pool *p, const unsigned char *hex, size_t hex_len, size_t *len); /* Obtain the Levenshtein distance between the two strings. The various * operations (swap, substitution, insertion, deletion) can be weighted. */ int pr_str_levenshtein(pool *p, const char *a, const char *b, int swap_cost, int subst_cost, int insert_cost, int del_cost, int flags); /* Given a string and a list of possibly similar candidates, return an * array of the candidates, sorted in order of Levenshtein distance (ascending). * A maximum edit distance can be used to return the most relevant subset of * the candidates; if a max distance of zero is used, the default max distance * value will be used. */ array_header *pr_str_get_similars(pool *p, const char *s, array_header *candidates, int max_distance, int flags); #define PR_STR_DEFAULT_MAX_EDIT_DISTANCE 7 /* Given a string delimited by a character (such as comma or pipe), return * an array of each item. */ array_header *pr_str_text_to_array(pool *p, const char *text, char delimiter); /* Converts a string to a uid_t/gid_t, respectively. */ int pr_str2uid(const char *, uid_t *); int pr_str2gid(const char *, gid_t *); /* Converts a uid_t/gid_t to a string, respectively */ const char *pr_uid2str(pool *, uid_t); const char *pr_gid2str(pool *, gid_t); #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 */