/usr/include/kannel/gwlib/utils.h is in kannel-dev 1.4.3-2+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* The Kannel Software License, Version 1.0
*
* Copyright (c) 2001-2009 Kannel Group
* Copyright (c) 1998-2001 WapIT Ltd.
* 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Kannel Group (http://www.kannel.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Kannel" and "Kannel Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please
* contact org@kannel.org.
*
* 5. Products derived from this software may not be called "Kannel",
* nor may "Kannel" appear in their name, without prior written
* permission of the Kannel Group.
*
* THIS SOFTWARE IS PROVIDED ``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 KANNEL 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 Kannel Group. For more information on
* the Kannel Group, please see <http://www.kannel.org/>.
*
* Portions of this software are based upon software originally written at
* WapIT Ltd., Helsinki, Finland for the Kannel project.
*/
/*
* utils.c - generally useful, non-application specific functions for Gateway
*
* Kalle Marjola <rpr@wapit.com>
*/
#ifndef GW_UTILS_H
#define GW_UTILS_H
#include <stddef.h>
#include <stdio.h>
#include "octstr.h"
#include <termios.h>
/*
* Octet and MultibyteInteger (variable length) functions
*/
typedef unsigned char Octet; /* 8-bit basic data */
typedef unsigned long MultibyteInt; /* limited to 32 bits, not 35 */
/* get value of a multibyte ineteger. Note that it MUST be a valid
* numbers, otherwise an overflow may occur as the function keeps
* on reading the number until continue-bit (high bit) is not set.
* Does not fail, always returns some number, but may overflow. */
MultibyteInt get_variable_value(Octet *source, int *len);
/* write given multibyte integer into given destination string, which
* must be large enough to handle the number (5 bytes is always sufficient)
* returns the total length of the written number, in bytes. Does not fail */
int write_variable_value(MultibyteInt value, Octet *dest);
/* reverse the value of an octet */
Octet reverse_octet(Octet source);
/* parse command line arguments and set options for the following
* global arguments:
*
* -v or --verbosity
* -D or --debug
* -F or --logfile
* -V or --fileverbosity
* -X or --panic-script
* -P or --parachute
* -d or --daemonize
* -p or --pid-file
* -u or --user
* -g or --generate
*
* Any other argument starting with '-' calls 'find_own' function,
* which is provided by the user. If set to NULL, these are ignored
* (but error message is put into stderr)
*
* Returns index of next argument after any parsing
*
* Function 'find_own' has following parameters:
* index is the current index in argv
* argc and argv are command line parameters, directly transfered
*
* the function returns any extra number of parameters needed to be
* skipped. It must personally deal with any malformed arguments.
* It return -1 if it cannot find match for the argument
*
* sample simple function is like:
* int find_is_there_X(int i, int argc, char **argv)
* { if (strcmp(argv[i], "-X")==0) return 0; else return -1; }
*/
int get_and_set_debugs(int argc, char **argv,
int (*find_own) (int index, int argc, char **argv));
/*
* return 0 if 'ip' is denied by deny_ip and not allowed by allow_ip
* return 1 otherwise (deny_ip is NULL or 'ip' is in allow_ip or is not
* in deny_ip)
* return -1 on error ('ip' is NULL)
*/
int is_allowed_ip(Octstr *allow_ip, Octstr *deny_ip, Octstr *ip);
/*
* Return 1 if 'ip' is not allowed to connect, when 'allow_ip' defines
* allowed hosts, and 0 if connect ok. If 'allow_ip' is NULL, check against
* "127.0.0.1" (localhost)
*/
int connect_denied(Octstr *allow_ip, Octstr *ip);
/*
* Checks if a given prefix list seperated with semicolon does match
* a given number.
*
* This is mainly used for the allowed-prefix, denied-prefix configuration
* directives.
*/
int does_prefix_match(Octstr *prefix, Octstr *number);
/*
* Normalize 'number', like change number "040500" to "0035840500" if
* the dial-prefix is like "0035840,040;0035850,050"
*
* return -1 on error, 0 if no match in dial_prefixes and 1 if match found
* If the 'number' needs normalization, it is done.
*/
int normalize_number(char *dial_prefixes, Octstr **number);
/*
* Convert a standard "network long" (32 bits in 4 octets, most significant
* octet first) to the host representation.
*/
long decode_network_long(unsigned char *data);
/*
* Convert a long to the standard network representation (32 bits in 4
* octets, most significant octet first).
*/
void encode_network_long(unsigned char *data, unsigned long value);
/* kannel implementation of cfmakeraw, which is an extension in GNU libc */
void kannel_cfmakeraw (struct termios *tio);
/*
* Wrappers around the isdigit and isxdigit functions that are guaranteed
* to be functions, not macros. (The standard library functions are also
* guaranteed by the C standard to be functions, in addition to possibly
* also being macros, but not all implementations follow the standard.)
*/
int gw_isdigit(int);
int gw_isxdigit(int);
/*
* Rounds up the result of a division
*/
int roundup_div(int a, int b);
/*
* generate a unique id
* (not guarenteed to be unique, but it's extremly unlikely for it not to be)
*/
unsigned long long gw_generate_id(void);
#endif
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