msg_translator.c File Reference

Create and translate SIP messages/ message contents

Via header special parameters.

#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "msg_translator.h"
#include "globals.h"
#include "error.h"
#include "mem/mem.h"
#include "dprint.h"
#include "config.h"
#include "md5utils.h"
#include "data_lump.h"
#include "data_lump_rpl.h"
#include "ip_addr.h"
#include "resolve.h"
#include "ut.h"
#include "pt.h"

Include dependency graph for msg_translator.c:

Go to the source code of this file.

Defines

#define get_ip_port_proto

#define ROUTE_LEN   (sizeof(ROUTE_STR)-1)

#define ROUTE_STR   "Route: "

Save given Path body as Route header in message.

#define str_int_print(string, intval)

#define str_ipaddr_print(string, ipaddr_val)

#define str_lenpair_print(string, string_len, string2, string2_len)

#define str_pair_print(string, string2, string2_len)   str_lenpair_print((string), strlen((string)), (string2), (string2_len))

#define str_print(string, string_len)

#define SUBST_LUMP(subst_l)

#define SUBST_LUMP_LEN(subst_l)

Functions

static int adjust_clen (struct sip_msg *msg, int body_delta, int proto)

Adjust/insert Content-Length if necessary.

int branch_builder (unsigned int hash_index, unsigned int label, char *char_v, int branch, char *branch_str, int *len)

return number of chars printed or 0 if space exceeded; assumes buffer size of at least MAX_BRANCH_PARAM_LEN

char * build_req_buf_from_sip_req (struct sip_msg *msg, unsigned int *returned_len, struct socket_info *send_sock, int proto, unsigned int flags)

char * build_res_buf_from_sip_req (unsigned int code, str *text, str *new_tag, struct sip_msg *msg, unsigned int *returned_len, struct bookmark *bmark)

char * build_res_buf_from_sip_res (struct sip_msg *msg, unsigned int *returned_len)

static int check_via_address (struct ip_addr *ip, str *name, unsigned short port, unsigned short proto, int resolver)

checks if ip is in host(name) and ?host(ip)=name? ip must be in network byte order! resolver = DO_DNS | DO_REV_DNS; if 0 no dns check is made

char * clen_builder (struct sip_msg *msg, int *clen_len, int diff)

char * id_builder (struct sip_msg *msg, unsigned int *id_len)

static int insert_path_as_route (struct sip_msg *msg, str *path)

static int lump_check_opt (struct lump *l, struct sip_msg *msg, struct socket_info *snd_s)

* checks if a lump opt condition returns 1 if cond is true, 0 if false

static int lumps_len (struct sip_msg *msg, struct lump *lumps, struct socket_info *send_sock)

computes the "unpacked" len of a lump list, code moved from build_req_from_req

static void process_lumps (struct sip_msg *msg, struct lump *lumps, char *new_buf, unsigned int *new_buf_offs, unsigned int *orig_offs, struct socket_info *send_sock)

another helper functions, adds/Removes the lump, code moved form build_req_from_req

char * received_builder (struct sip_msg *msg, unsigned int *received_len)

int received_test (struct sip_msg *msg)

check if IP address in Via != source IP address of signaling

char * rport_builder (struct sip_msg *msg, unsigned int *rport_len)

char * via_builder (unsigned int *len, struct socket_info *send_sock, str *branch, str *extra_params, int proto, struct hostport *hp)

static char * warning_builder (struct sip_msg *msg, unsigned int *returned_len)

Variables

char version []

int version_len

Detailed Description

Create and translate SIP messages/ message contents

Via header special parameters.

Definition in file msg_translator.c.

Define Documentation

#define get_ip_port_proto

Referenced by lump_check_opt().

#define ROUTE_LEN (sizeof(ROUTE_STR)-1)

Definition at line 1222 of file msg_translator.c.

Referenced by insert_path_as_route().

#define ROUTE_STR "Route: "

Save given Path body as Route header in message.

If another Route HF is found, it's placed right before that. Otherwise, it's placed after the last Via HF. If also no Via HF is found, it's placed as first HF.

Definition at line 1221 of file msg_translator.c.

Referenced by insert_path_as_route().

#define str_int_print	(	string,
		intval		)

Value:

do{\
         t=int2str((intval), &print_len); \
         str_pair_print(string, t, print_len);\
      } while(0)

Referenced by warning_builder().

#define str_ipaddr_print	(	string,
		ipaddr_val		)

Value:

do{\
         t=ip_addr2a((ipaddr_val)); \
         print_len=strlen(t); \
         str_pair_print(string, t, print_len);\
      } while(0)

Referenced by warning_builder().

#define str_lenpair_print	(	string,
		string_len,
		string2,
		string2_len	)

Value:

do{ \
         str_print(string, string_len); \
         str_print(string2, string2_len);\
      }while(0)

Referenced by warning_builder().

#define str_pair_print	(	string,
		string2,
		string2_len	)	str_lenpair_print((string), strlen((string)), (string2), (string2_len))

Referenced by warning_builder().

#define str_print	(	string,
		string_len		)

Referenced by warning_builder().

#define SUBST_LUMP ( subst_l )

Referenced by process_lumps().

#define SUBST_LUMP_LEN ( subst_l )

Referenced by lumps_len().

Function Documentation

static int adjust_clen	(	struct sip_msg *	msg,
		int	body_delta,
		int	proto
	)			`[inline, static]`

Adjust/insert Content-Length if necessary.

Definition at line 1121 of file msg_translator.c.

References anchor_lump(), sip_msg::buf, clen_builder(), sip_msg::content_length, del_lump(), HDR_CONTENTLENGTH_F, HDR_CONTENTLENGTH_T, insert_new_lump_after(), hdr_field::len, LM_DBG, LM_ERR, hdr_field::name, parse_headers(), pkg_free, PROTO_TCP, PROTO_TLS, PROTO_UDP, _str::s, and sip_msg::unparsed.

Referenced by build_req_buf_from_sip_req(), and build_res_buf_from_sip_res().

int branch_builder	(	unsigned int	hash_index,
		unsigned int	label,
		char *	char_v,
		int	branch,
		char *	branch_str,
		int *	len
	)

return number of chars printed or 0 if space exceeded; assumes buffer size of at least MAX_BRANCH_PARAM_LEN

Definition at line 1855 of file msg_translator.c.

References BRANCH_SEPARATOR, int2reverse_hex(), MAX_BRANCH_PARAM_LEN, MCOOKIE, MCOOKIE_LEN, and MD5_LEN.

Referenced by t_calc_branch().

char* build_req_buf_from_sip_req	(	struct sip_msg *	msg,
		unsigned int *	returned_len,
		struct socket_info *	send_sock,
		int	proto,
		unsigned int	flags
	)

Definition at line 1275 of file msg_translator.c.

References sip_msg::add_rm, sip_msg::add_to_branch_len, sip_msg::add_to_branch_s, adjust_clen(), anchor_lump(), sip_msg::body_lumps, sip_msg::buf, buf, del_lump(), E_OUT_OF_MEM, sip_msg::first_line, FL_FORCE_LOCAL_RPORT, FL_FORCE_RPORT, via_body::hdr, HDR_VIA_T, via_body::host, id_builder(), insert_new_lump_after(), insert_new_lump_before(), insert_path_as_route(), sip_msg::len, _str::len, len, LM_DBG, LM_ERR, lumps_len(), sip_msg::msg_flags, MSG_TRANS_NOVIA_FLAG, MSG_TRANS_SHM_FLAG, sip_msg::new_uri, via_body::params, sip_msg::path_vec, pkg_free, pkg_malloc, via_body::port, via_body::port_str, process_lumps(), receive_info::proto, PROTO_TCP, PROTO_TLS, sip_msg::rcv, via_body::received, received_builder(), received_test(), msg_start::request, via_body::rport, RPORT, rport_builder(), RPORT_LEN, _str::s, ser_error, set_hostport, shm_malloc(), via_param::size, via_param::start, msg_start::u, sip_msg::via1, via_builder(), and via_len.

Referenced by forward_request(), print_uac_request(), and t_uac().

char* build_res_buf_from_sip_req	(	unsigned int	code,
		str *	text,
		str *	new_tag,
		struct sip_msg *	msg,
		unsigned int *	returned_len,
		struct bookmark *	bmark
	)

Definition at line 1579 of file msg_translator.c.

References append_str, hdr_field::body, buf, CONTENT_LENGTH, CONTENT_LENGTH_LEN, CRLF, CRLF_LEN, FL_FORCE_RPORT, lump_rpl::flags, get_to, sip_msg::h_via1, HDR_CALLID_T, HDR_CSEQ_T, HDR_EOH_F, HDR_FROM_T, HDR_RECORDROUTE_T, HDR_TO_T, HDR_VIA_T, sip_msg::headers, int2str(), hdr_field::len, _str::len, len, LM_CRIT, LM_ERR, LM_WARN, LUMP_RPL_BODY, LUMP_RPL_HDR, sip_msg::msg_flags, hdr_field::name, lump_rpl::next, hdr_field::next, NULL, parse_headers(), hdr_field::parsed, pkg_free, pkg_malloc, received_builder(), received_test(), sip_msg::reply_lump, via_body::rport, rport_builder(), _str::s, server_header, server_signature, SIP_VERSION, SIP_VERSION_LEN, sip_warning, via_param::size, via_param::start, to_body::tag_value, lump_rpl::text, bookmark::to_tag_val, TOTAG_TOKEN, TOTAG_TOKEN_LEN, hdr_field::type, sip_msg::via1, and warning_builder().

Referenced by _reply(), relay_reply(), sl_send_reply_helper(), and t_reply_with_body().

char* build_res_buf_from_sip_res	(	struct sip_msg *	msg,
		unsigned int *	returned_len
	)

Definition at line 1510 of file msg_translator.c.

References sip_msg::add_rm, adjust_clen(), hdr_field::body, sip_msg::body_lumps, via_body::bsize, sip_msg::buf, buf, del_lump(), sip_msg::first_line, sip_msg::h_via1, HDR_VIA_T, hdr_field::len, sip_msg::len, len, LM_DBG, LM_ERR, lumps_len(), hdr_field::name, via_body::next, pkg_malloc, process_lumps(), via_body::proto, PROTO_UDP, msg_start::reply, _str::s, msg_start::u, sip_msg::via1, sip_msg::via2, and via_len.

Referenced by forward_reply(), and relay_reply().

static int check_via_address	(	struct ip_addr *	ip,
		str *	name,
		unsigned short	port,
		unsigned short	proto,
		int	resolver
	)			`[static]`

checks if ip is in host(name) and ?host(ip)=name? ip must be in network byte order! resolver = DO_DNS | DO_REV_DNS; if 0 no dns check is made

Returns:: 0 if equal

Definition at line 147 of file msg_translator.c.

References ip_addr::addr, ip_addr::af, DO_DNS, DO_REV_DNS, ip_addr2a(), ip_addr::len, _str::len, len, LM_CRIT, LM_DBG, rev_resolvehost, _str::s, s, SIP_PORT, sip_resolvehost(), and ip_addr::u.

Referenced by received_test().

char* clen_builder	(	struct sip_msg *	msg,
		int *	clen_len,
		int	diff
	)

Definition at line 387 of file msg_translator.c.

References sip_msg::buf, buf, CONTENT_LENGTH, CONTENT_LENGTH_LEN, CRLF, CRLF_LEN, E_BAD_REQ, E_OUT_OF_MEM, get_body(), int2str(), sip_msg::len, len, LM_DBG, LM_ERR, pkg_malloc, and ser_error.

Referenced by adjust_clen().

char* id_builder	(	struct sip_msg *	msg,
		unsigned int *	id_len
	)

Definition at line 358 of file msg_translator.c.

References buf, E_OUT_OF_MEM, ID_PARAM, ID_PARAM_LEN, int2reverse_hex(), len, LM_CRIT, LM_ERR, pkg_malloc, receive_info::proto_reserved1, sip_msg::rcv, and ser_error.

Referenced by build_req_buf_from_sip_req().

static int insert_path_as_route	(	struct sip_msg *	msg,
		str *	path
	)			`[inline, static]`

Definition at line 1223 of file msg_translator.c.

References anchor_lump(), sip_msg::buf, CRLF, CRLF_LEN, HDR_ROUTE_T, HDR_VIA_T, sip_msg::headers, insert_new_lump_before(), _str::len, LM_ERR, hdr_field::name, hdr_field::next, pkg_malloc, ROUTE_LEN, ROUTE_STR, _str::s, hdr_field::type, and sip_msg::unparsed.

Referenced by build_req_buf_from_sip_req().

static int lump_check_opt	(	struct lump *	l,
		struct sip_msg *	msg,
		struct socket_info *	snd_s
	)			`[inline, static]`

* checks if a lump opt condition returns 1 if cond is true, 0 if false

Definition at line 421 of file msg_translator.c.

References socket_info::address, ip_addr::af, lump::cond, COND_FALSE, COND_IF_DIFF_AF, COND_IF_DIFF_IP, COND_IF_DIFF_PORT, COND_IF_DIFF_PROTO, COND_IF_DIFF_REALMS, COND_TRUE, lump::flags, get_ip_port_proto, ip_addr_cmp, LM_CRIT, LUMPFLAG_COND_TRUE, port, socket_info::port_no, socket_info::proto, and lump::u.

Referenced by lumps_len(), and process_lumps().

static int lumps_len	(	struct sip_msg *	msg,
		struct lump *	lumps,
		struct socket_info *	send_sock
	)			`[inline, static]`

computes the "unpacked" len of a lump list, code moved from build_req_from_req

Definition at line 489 of file msg_translator.c.

References socket_info::address_str, lump::after, lump::before, lump::len, _str::len, LM_CRIT, LUMP_ADD, LUMP_ADD_OPT, LUMP_ADD_SUBST, lump_check_opt(), LUMP_DEL, LUMP_NOP, lump::next, lump::offset, lump::op, socket_info::port_no_str, sip_msg::set_global_address, sip_msg::set_global_port, SUBST_LUMP_LEN, and lump::u.

Referenced by build_req_buf_from_sip_req(), and build_res_buf_from_sip_res().

static void process_lumps	(	struct sip_msg *	msg,
		struct lump *	lumps,
		char *	new_buf,
		unsigned int *	new_buf_offs,
		unsigned int *	orig_offs,
		struct socket_info *	send_sock
	)			`[inline, static]`

another helper functions, adds/Removes the lump, code moved form build_req_from_req

Definition at line 738 of file msg_translator.c.

References socket_info::address_str, lump::after, lump::before, sip_msg::buf, lump::len, _str::len, LM_CRIT, LM_WARN, LUMP_ADD, LUMP_ADD_OPT, LUMP_ADD_SUBST, lump_check_opt(), LUMP_DEL, LUMP_NOP, lump::next, lump::offset, lump::op, socket_info::port_no_str, sip_msg::set_global_address, sip_msg::set_global_port, SUBST_LUMP, lump::u, and lump::value.

Referenced by build_req_buf_from_sip_req(), and build_res_buf_from_sip_res().

char* received_builder	(	struct sip_msg *	msg,
		unsigned int *	received_len
	)

Definition at line 305 of file msg_translator.c.

References buf, E_OUT_OF_MEM, ip_addr2a(), len, LM_ERR, MAX_RECEIVED_SIZE, pkg_malloc, sip_msg::rcv, RECEIVED, RECEIVED_LEN, ser_error, and receive_info::src_ip.

Referenced by build_req_buf_from_sip_req(), and build_res_buf_from_sip_req().

int received_test ( struct sip_msg * msg )

check if IP address in Via != source IP address of signaling

Definition at line 209 of file msg_translator.c.

References check_via_address(), via_body::host, via_body::maddr, NULL, via_body::port, via_body::proto, sip_msg::rcv, via_body::received, received_dns, receive_info::src_ip, via_param::value, and sip_msg::via1.

Referenced by build_req_buf_from_sip_req(), build_res_buf_from_sip_req(), nat_uac_test_f(), and test_source_address().

char* rport_builder	(	struct sip_msg *	msg,
		unsigned int *	rport_len
	)

Definition at line 334 of file msg_translator.c.

References buf, E_OUT_OF_MEM, int2str(), len, LM_ERR, pkg_malloc, sip_msg::rcv, RPORT, RPORT_LEN, ser_error, and receive_info::src_port.

Referenced by build_req_buf_from_sip_req(), and build_res_buf_from_sip_req().

char* via_builder	(	unsigned int *	len,
		struct socket_info *	send_sock,
		str *	branch,
		str *	extra_params,
		int	proto,
		struct hostport *	hp
	)

Definition at line 1905 of file msg_translator.c.

References socket_info::address_str, CRLF, CRLF_LEN, E_OUT_OF_MEM, hostport::host, _str::len, LM_CRIT, LM_ERR, MY_BRANCH, MY_BRANCH_LEN, MY_VIA, MY_VIA_LEN, pkg_malloc, hostport::port, socket_info::port_no, socket_info::port_no_str, PROTO_SCTP, PROTO_TCP, PROTO_TLS, PROTO_UDP, _str::s, ser_error, SIP_PORT, and via_len.

Referenced by assemble_via(), build_dlg_ack(), build_local(), build_req_buf_from_sip_req(), and build_uac_cancel().

static char* warning_builder	(	struct sip_msg *	msg,
		unsigned int *	returned_len
	)			`[static]`

Definition at line 228 of file msg_translator.c.

References receive_info::bind_address, buf, sip_msg::first_line, HDR_EOH_F, _str::len, LM_ERR, MAX_WARNING_LEN, my_pid(), socket_info::name, sip_msg::new_uri, sip_msg::parsed_flag, socket_info::port_no_str, sip_msg::rcv, msg_start::request, _str::s, receive_info::src_ip, receive_info::src_port, str_int_print, str_ipaddr_print, str_lenpair_print, str_pair_print, str_print, msg_start::u, via_cnt, WARNING, WARNING_LEN, WARNING_PHRASE, and WARNING_PHRASE_LEN.

Referenced by build_res_buf_from_sip_req().

Variable Documentation

char version[]

int version_len


Defines
#define	get_ip_port_proto
#define	ROUTE_LEN (sizeof(ROUTE_STR)-1)
#define	ROUTE_STR "Route: "
	Save given Path body as Route header in message.
#define	str_int_print(string, intval)
#define	str_ipaddr_print(string, ipaddr_val)
#define	str_lenpair_print(string, string_len, string2, string2_len)
#define	str_pair_print(string, string2, string2_len) str_lenpair_print((string), strlen((string)), (string2), (string2_len))
#define	str_print(string, string_len)
#define	SUBST_LUMP(subst_l)
#define	SUBST_LUMP_LEN(subst_l)
Functions
static int	adjust_clen (struct sip_msg *msg, int body_delta, int proto)
	Adjust/insert Content-Length if necessary.
int	branch_builder (unsigned int hash_index, unsigned int label, char char_v, int branch, char branch_str, int *len)
	return number of chars printed or 0 if space exceeded; assumes buffer size of at least MAX_BRANCH_PARAM_LEN
char *	build_req_buf_from_sip_req (struct sip_msg msg, unsigned int returned_len, struct socket_info *send_sock, int proto, unsigned int flags)
char *	build_res_buf_from_sip_req (unsigned int code, str text, str new_tag, struct sip_msg msg, unsigned int returned_len, struct bookmark *bmark)
char *	build_res_buf_from_sip_res (struct sip_msg msg, unsigned int returned_len)
static int	check_via_address (struct ip_addr ip, str name, unsigned short port, unsigned short proto, int resolver)
	checks if ip is in host(name) and ?host(ip)=name? ip must be in network byte order! resolver = DO_DNS \| DO_REV_DNS; if 0 no dns check is made
char *	clen_builder (struct sip_msg msg, int clen_len, int diff)
char *	id_builder (struct sip_msg msg, unsigned int id_len)
static int	insert_path_as_route (struct sip_msg msg, str path)
static int	lump_check_opt (struct lump l, struct sip_msg msg, struct socket_info *snd_s)
	* checks if a lump opt condition returns 1 if cond is true, 0 if false
static int	lumps_len (struct sip_msg msg, struct lump lumps, struct socket_info *send_sock)
	computes the "unpacked" len of a lump list, code moved from build_req_from_req
static void	process_lumps (struct sip_msg msg, struct lump lumps, char new_buf, unsigned int new_buf_offs, unsigned int orig_offs, struct socket_info send_sock)
	another helper functions, adds/Removes the lump, code moved form build_req_from_req
char *	received_builder (struct sip_msg msg, unsigned int received_len)
int	received_test (struct sip_msg *msg)
	check if IP address in Via != source IP address of signaling
char *	rport_builder (struct sip_msg msg, unsigned int rport_len)
char *	via_builder (unsigned int len, struct socket_info send_sock, str branch, str extra_params, int proto, struct hostport *hp)
static char *	warning_builder (struct sip_msg msg, unsigned int returned_len)
Variables
char	version []
int	version_len