234 lines
8.8 KiB
C
234 lines
8.8 KiB
C
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Implementation of Inter-Asterisk eXchange
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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*
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* This program is free software, distributed under the terms of
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* the GNU Lesser General Public License (LGPL)
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*/
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#ifndef _ASTERISK_IAX_CLIENT_H
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#define _ASTERISK_IAX_CLIENT_H
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#ifdef WIN32_TIME_GET_TIME
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#include <Mmsystem.h>
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#endif
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#if defined(_MSC_VER)
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/* disable zero-sized array in struct/union warning */
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#pragma warning(disable:4200)
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#endif
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#ifndef LINUX
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#define socklen_t int
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#endif
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#include "frame.h"
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#include "iax2.h"
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#include "iax2-parser.h"
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#define MAXSTRLEN 80
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#define IAX_AUTHMETHOD_PLAINTEXT IAX_AUTH_PLAINTEXT
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#define IAX_AUTHMETHOD_MD5 IAX_AUTH_MD5
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extern char iax_errstr[];
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struct iax_session;
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#define IAX_EVENT_CONNECT 0 /* Connect a new call */
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#define IAX_EVENT_ACCEPT 1 /* Accept a call */
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#define IAX_EVENT_HANGUP 2 /* Hang up a call */
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#define IAX_EVENT_REJECT 3 /* Rejected call */
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#define IAX_EVENT_VOICE 4 /* Voice Data */
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#define IAX_EVENT_DTMF 5 /* A DTMF Tone */
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#define IAX_EVENT_TIMEOUT 6 /* Connection timeout... session will be
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a pointer to free()'d memory! */
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#define IAX_EVENT_LAGRQ 7 /* Lag request -- Internal use only */
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#define IAX_EVENT_LAGRP 8 /* Lag Measurement. See event.lag */
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#define IAX_EVENT_RINGA 9 /* Announce we/they are ringing */
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#define IAX_EVENT_PING 10 /* Ping -- internal use only */
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#define IAX_EVENT_PONG 11 /* Pong -- internal use only */
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#define IAX_EVENT_BUSY 12 /* Report a line busy */
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#define IAX_EVENT_ANSWER 13 /* Answer the line */
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#define IAX_EVENT_IMAGE 14 /* Send/Receive an image */
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#define IAX_EVENT_AUTHRQ 15 /* Authentication request */
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#define IAX_EVENT_AUTHRP 16 /* Authentication reply */
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#define IAX_EVENT_REGREQ 17 /* Registration request */
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#define IAX_EVENT_REGACK 18 /* Registration reply */
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#define IAX_EVENT_URL 19 /* URL received */
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#define IAX_EVENT_LDCOMPLETE 20 /* URL loading complete */
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#define IAX_EVENT_TRANSFER 21 /* Transfer has taken place */
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#define IAX_EVENT_DPREQ 22 /* Dialplan request */
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#define IAX_EVENT_DPREP 23 /* Dialplan reply */
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#define IAX_EVENT_DIAL 24 /* Dial on a TBD call */
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#define IAX_EVENT_QUELCH 25 /* Quelch Audio */
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#define IAX_EVENT_UNQUELCH 26 /* Unquelch Audio */
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#define IAX_EVENT_UNLINK 27 /* Unlink */
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#define IAX_EVENT_LINKREJECT 28 /* Link Rejection */
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#define IAX_EVENT_TEXT 29 /* Text Frame :-) */
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#define IAX_EVENT_REGREJ 30 /* Registration reply */
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#define IAX_EVENT_LINKURL 31 /* Unlink */
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#define IAX_EVENT_CNG 32 /* Comfort-noise (almost silence) */
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/* moved from iax.c to support attended transfer */
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#define IAX_EVENT_REREQUEST 999
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#define IAX_EVENT_TXREPLY 1000
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#define IAX_EVENT_TXREJECT 1001
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#define IAX_EVENT_TXACCEPT 1002
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#define IAX_EVENT_TXREADY 1003
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#define IAX_SCHEDULE_FUZZ 0 /* ms of fuzz to drop */
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#ifdef WIN32
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#if defined(_MSC_VER)
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typedef int (__stdcall *sendto_t)(SOCKET, const char *, int, int, const struct sockaddr *, int);
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typedef int (__stdcall *recvfrom_t)(SOCKET, char *, int, int, struct sockaddr *, int *);
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#else
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typedef int PASCAL (*sendto_t)(SOCKET, const char *, int, int, const struct sockaddr *, int);
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typedef int PASCAL (*recvfrom_t)(SOCKET, char *buf, int len, int flags, struct sockaddr *from, int *fromlen);
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#endif
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#else
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typedef int (*sendto_t)(int, const void *, size_t, int, const struct sockaddr *, socklen_t);
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typedef int (*recvfrom_t)(int s, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen);
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#endif
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struct iax_event {
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int etype; /* Type of event */
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int subclass; /* Subclass data (event specific) */
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unsigned int ts; /* Timestamp */
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struct iax_session *session; /* Applicable session */
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int datalen; /* Length of raw data */
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struct iax_ies ies; /* IE's for IAX2 frames */
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unsigned char data[0]; /* Raw data if applicable */
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};
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#if defined(__cplusplus)
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extern "C"
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{
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#endif
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/* All functions return 0 on success and -1 on failure unless otherwise
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specified */
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/* Called to initialize IAX structures and sockets. Returns actual
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portnumber (which it will try preferred portno first, but if not
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take what it can get */
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extern int iax_init(int preferredportno);
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extern int iax_shutdown(void);
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/* Get filedescriptor for IAX to use with select or gtk_input_add */
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extern int iax_get_fd(void);
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/* Find out how many milliseconds until the next scheduled event */
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extern int iax_time_to_next_event(void);
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/* Generate a new IAX session */
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extern struct iax_session *iax_session_new(void);
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/* Return exactly one iax event (if there is one pending). If blocking is
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non-zero, IAX will block until some event is received */
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extern struct iax_event *iax_get_event(int blocking);
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extern int iax_auth_reply(struct iax_session *session, char *password,
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char *challenge, int methods);
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/* Free an event */
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extern void iax_event_free(struct iax_event *event);
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struct sockaddr_in;
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/* Front ends for sending events */
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extern int iax_send_dtmf(struct iax_session *session, char digit);
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extern int iax_send_voice(struct iax_session *session, int format, unsigned char *data, int datalen, int samples);
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extern int iax_send_cng(struct iax_session *session, int level, unsigned char *data, int datalen);
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extern int iax_send_image(struct iax_session *session, int format, unsigned char *data, int datalen);
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extern int iax_send_url(struct iax_session *session, char *url, int link);
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extern int iax_send_text(struct iax_session *session, char *text);
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extern int iax_send_ping(struct iax_session *session);
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extern int iax_load_complete(struct iax_session *session);
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extern int iax_reject(struct iax_session *session, char *reason);
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extern int iax_busy(struct iax_session *session);
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extern int iax_congestion(struct iax_session *session);
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extern int iax_hangup(struct iax_session *session, char *byemsg);
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extern int iax_call(struct iax_session *session, char *cidnum, char *cidname, char *ich, char *lang, int wait, int format, int capability);
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extern int iax_accept(struct iax_session *session, int format);
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extern int iax_answer(struct iax_session *session);
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extern int iax_sendurl(struct iax_session *session, char *url);
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extern int iax_send_unlink(struct iax_session *session);
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extern int iax_send_link_reject(struct iax_session *session);
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extern int iax_ring_announce(struct iax_session *session);
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extern struct sockaddr_in iax_get_peer_addr(struct iax_session *session);
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extern int iax_register(struct iax_session *session, char *hostname, char *peer, char *secret, int refresh);
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extern int iax_lag_request(struct iax_session *session);
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extern int iax_dial(struct iax_session *session, char *number); /* Dial on a TBD call */
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extern int iax_dialplan_request(struct iax_session *session, char *number); /* Request dialplan status for number */
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extern int iax_quelch(struct iax_session *session);
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extern int iax_unquelch(struct iax_session * session);
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extern int iax_transfer(struct iax_session *session, char *number);
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extern int iax_quelch_moh(struct iax_session *session, int MOH);
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extern void iax_destroy(struct iax_session * session);
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extern void iax_enable_debug(void);
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extern void iax_disable_debug(void);
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/* For attended transfer, application create a new session,
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* make a call on the new session.
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* On answer of the new session, call iax_setup_transfer and wait for
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* IAX_EVENT_TXREADY when both sides are completed succefully or
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* IAX_EVENT_TXREJECT for either side.
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* If there are music on hold the it will be stopped by this library.
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*/
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extern int iax_setup_transfer(struct iax_session *s0, struct iax_session *s1);
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struct iax_netstat {
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int jitter;
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int losspct;
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int losscnt;
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int packets;
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int delay;
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int dropped;
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int ooo;
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};
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/* fills in rtt, and an iax_netstat structure for each of local/remote directions of call */
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extern int iax_get_netstats(struct iax_session *s, int *rtt, struct iax_netstat *local, struct iax_netstat *remote);
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extern void iax_set_private(struct iax_session *s, void *pvt);
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extern void *iax_get_private(struct iax_session *s);
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extern void iax_set_sendto(struct iax_session *s, sendto_t sendto);
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/* to use application networking instead of internal, set call this instead of iax_init,
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* and pass in sendto and recvfrom replacements. blocking reads may not be implemented */
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extern void iax_set_networking(sendto_t st, recvfrom_t rf);
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/* destroy an iax session */
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extern void iax_session_destroy(struct iax_session **session);
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/* Handle externally received frames */
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struct iax_event *iax_net_process(unsigned char *buf, int len, struct sockaddr_in *sin);
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extern unsigned int iax_session_get_capability(struct iax_session *s);
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extern char iax_pref_codec_add(struct iax_session *session, unsigned int format);
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extern void iax_pref_codec_del(struct iax_session *session, unsigned int format);
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extern int iax_pref_codec_get(struct iax_session *session, unsigned int *array, int len);
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#if defined(__cplusplus)
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}
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#endif
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#endif /* _ASTERISK_IAX_CLIENT_H */
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