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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/* Cherokee
*
* Authors:
* Alvaro Lopez Ortega <alvaro@alobbs.com>
*
* Copyright (C) 2001-2011 Alvaro Lopez Ortega
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/

#if !defined (CHEROKEE_INSIDE_CHEROKEE_H) && !defined (CHEROKEE_COMPILATION)
# error "Only <cherokee/cherokee.h> can be included directly, this file may disappear or change contents."
#endif

#ifndef CHEROKEE_UTIL_H
#define CHEROKEE_UTIL_H

#include <cherokee/common.h>
#include <cherokee/avl.h>
#include <cherokee/trace.h>
#include <cherokee/plugin_loader.h>

#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif

#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif

#ifdef HAVE_PWD_H
# include <pwd.h>
#endif

#ifdef HAVE_GRP_H
# include <grp.h>
#endif

#ifdef HAVE_SYS_UIO_H
# include <sys/uio.h>
#endif

#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>

#include <time.h>
#include <dirent.h>
#include <errno.h>

#include <cherokee/buffer.h>
#include <cherokee/iocache.h>


CHEROKEE_BEGIN_DECLS

/* Error buffer size for cherokee_strerror_r().
*/
#define ERROR_MIN_BUFSIZE 64 /* min. buffer size */
#define ERROR_MAX_BUFSIZE 512 /* max. buffer size */

#ifdef _WIN32
# define cherokee_stat(path,buf) cherokee_win32_stat(path,buf)
# define cherokee_lstat(path,buf) cherokee_win32_stat(path,buf)
# define cherokee_error GetLastError()
#else
# define cherokee_error errno
#endif

/* Missing functions
*/
#ifndef HAVE_STRNSTR
char *strnstr (const char *s, const char *find, size_t slen);
#endif
#ifndef HAVE_STRCASESTR
char *strcasestr (register char *s, register char *find);
#endif
#ifndef HAVE_STRLCAT
size_t strlcat (char *dst, const char *src, size_t siz);
#endif
#ifndef HAVE_MALLOC
void *rpl_malloc (size_t n);
#endif

char *strncasestr (const char *s, const char *find, size_t slen);
char *strncasestrn (const char *s, size_t slen, const char *find, size_t findlen);

#define strncasestrn_s(s,s_len,lit) strncasestrn(s, s_len, lit, sizeof(lit)-1)

/* Constants
*/
extern const char hex2dec_tab[256];
extern const char *month[13];

/* String management functions
*/
char *cherokee_strerror_r (int err, char *buf, size_t bufsize);
int cherokee_isbigendian (void);
char *cherokee_min_str (char *s1, char *s2);
char *cherokee_max_str (char *s1, char *s2);
int cherokee_estimate_va_length (const char *format, va_list ap);
long cherokee_eval_formated_time (cherokee_buffer_t *buf);
ret_t cherokee_fix_dirpath (cherokee_buffer_t *buf);

ret_t cherokee_find_header_end (cherokee_buffer_t *buf,
char **end,
cuint_t *sep_len);

ret_t cherokee_find_header_end_cstr (char *c_str,
cint_t c_len,
char **end,
cuint_t *sep_len);

ret_t cherokee_parse_host (cherokee_buffer_t *buf,
cherokee_buffer_t *host,
cuint_t *port);

int cherokee_string_is_ipv6 (cherokee_buffer_t *ip);
ret_t cherokee_copy_local_address (void *socket, cherokee_buffer_t *buf);

ret_t cherokee_buf_add_bogonow (cherokee_buffer_t *buf,
cherokee_boolean_t update);

ret_t cherokee_buf_add_backtrace (cherokee_buffer_t *buf, int n_skip, const char *new_line, const char *line_pre);

ret_t cherokee_find_exec_in_path (const char *bin_name,
cherokee_buffer_t *fullpath);

ret_t cherokee_atoi (const char *str, int *ret_value);
ret_t cherokee_atob (const char *str, cherokee_boolean_t *ret_value);

/* Time management functions
*/
struct tm *cherokee_gmtime (const time_t *timep, struct tm *result);
struct tm *cherokee_localtime (const time_t *timep, struct tm *result);
long *cherokee_get_timezone_ref (void);

/* Thread safe functions
*/
DIR * cherokee_opendir (const char *dirname);
int cherokee_readdir (DIR *dirstream, struct dirent *entry, struct dirent **result);
int cherokee_closedir (DIR *dirstream);

int cherokee_stat (const char *restrict path, struct stat *buf);
int cherokee_lstat (const char *restrict path, struct stat *buf);
int cherokee_fstat (int filedes, struct stat *buf);
int cherokee_access (const char *pathname, int mode);
int cherokee_open (const char *path, int oflag, int mode);
int cherokee_unlink (const char *path);
int cherokee_pipe (int fildes[2]);

ret_t cherokee_gethostbyname (cherokee_buffer_t *hostname, struct addrinfo **addr);

ret_t cherokee_gethostname (cherokee_buffer_t *buf);
ret_t cherokee_syslog (int priority, cherokee_buffer_t *buf);

ret_t cherokee_getpwnam (const char *name, struct passwd *pwbuf, char *buf, size_t buflen);
ret_t cherokee_getpwuid (uid_t uid, struct passwd *pwbuf, char *buf, size_t buflen);
ret_t cherokee_getpwnam_uid (const char *name, struct passwd *pwbuf, char *buf, size_t buflen);
ret_t cherokee_getgrnam (const char *name, struct group *pwbuf, char *buf, size_t buflen);
ret_t cherokee_getgrgid (gid_t gid, struct group *pwbuf, char *buf, size_t buflen);
ret_t cherokee_getgrnam_gid (const char *name, struct group *pwbuf, char *buf, size_t buflen);

ret_t cherokee_mkstemp (cherokee_buffer_t *buffer, int *fd);
ret_t cherokee_mkdtemp (char *template);

ret_t cherokee_mkdir (const char *path, int mode);
ret_t cherokee_mkdir_p (cherokee_buffer_t *path, int mode);
ret_t cherokee_mkdir_p_perm (cherokee_buffer_t *dir_path, int create_mode, int ensure_perm);
ret_t cherokee_rm_rf (cherokee_buffer_t *path, uid_t uid);

void cherokee_random_seed (void);
long cherokee_random (void);

ret_t cherokee_ntop (int family, struct sockaddr *addr, char *dst, size_t cnt);
ret_t cherokee_wait_pid (int pid, int *retcode);
ret_t cherokee_reset_signals (void);

ret_t cherokee_io_stat (cherokee_iocache_t *iocache,
cherokee_buffer_t *path,
cherokee_boolean_t useit,
struct stat *info_space,
cherokee_iocache_entry_t **io_entry,
struct stat **info);

/* File descriptors
*/
ret_t cherokee_fd_set_nonblocking (int fd, cherokee_boolean_t enable);
ret_t cherokee_fd_set_nodelay (int fd, cherokee_boolean_t enable);
ret_t cherokee_fd_set_closexec (int fd);
ret_t cherokee_fd_set_reuseaddr (int fd);
ret_t cherokee_fd_close (int fd);

/* Misc
*/
ret_t cherokee_sys_fdlimit_get (cuint_t *limit);
ret_t cherokee_sys_fdlimit_set (cuint_t limit);
ret_t cherokee_get_shell (const char **shell, const char **binary);
ret_t cherokee_tmp_dir_copy (cherokee_buffer_t *buffer);

/* IO vectors
*/
ret_t cherokee_iovec_skip_sent (struct iovec orig[], uint16_t orig_len,
struct iovec dest[], uint16_t *dest_len,
size_t sent);
ret_t cherokee_iovec_was_sent (struct iovec orig[], uint16_t orig_len, size_t sent);

/* Debug
*/
void cherokee_trace (const char *entry, const char *file, int line, const char *func, const char *fmt, ...);

/* Path management
*/
ret_t cherokee_path_short (cherokee_buffer_t *path);
ret_t cherokee_path_arg_eval (cherokee_buffer_t *path);

/* Path walking
*/
ret_t cherokee_split_pathinfo (cherokee_buffer_t *path,
cuint_t init_pos,
int allow_dirs,
char **pathinfo,
int *pathinfo_len);

ret_t cherokee_split_arguments (cherokee_buffer_t *request,
int init_pos,
char **arguments,
int *arguments_len);

ret_t cherokee_parse_query_string (cherokee_buffer_t *qstring,
cherokee_avl_t *arguments);

char *cherokee_header_get_next_line (char *line);
ret_t cherokee_header_del_entry (cherokee_buffer_t *header,
const char *header_name,
int header_name_len);


CHEROKEE_END_DECLS

#endif /* CHEROKEE_UTIL_H */
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