345 lines
8.4 KiB
C
Executable File
345 lines
8.4 KiB
C
Executable File
/*
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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) 2003, Digium
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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 General Public License
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*/
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#include <sys/socket.h>
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#include <string.h>
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#include <netinet/in.h>
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#include <asterisk/frame.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "iax2.h"
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#include "iax2-parser.h"
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static void internaloutput(const char *str)
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{
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printf(str);
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}
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static void internalerror(const char *str)
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{
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fprintf(stderr, "WARNING: %s", str);
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}
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static void (*outputf)(const char *str) = internaloutput;
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static void (*errorf)(const char *str) = internalerror;
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static void dump_addr(char *output, int maxlen, void *value, int len)
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{
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struct sockaddr_in sin;
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if (len == sizeof(sin)) {
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memcpy(&sin, value, len);
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snprintf(output, maxlen, "IPV4 %s:%d", inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
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} else {
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snprintf(output, maxlen, "Invalid Address");
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}
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}
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static void dump_string(char *output, int maxlen, void *value, int len)
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{
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maxlen--;
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if (maxlen > len)
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maxlen = len;
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strncpy(output,value, maxlen);
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output[maxlen] = '\0';
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}
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static void dump_int(char *output, int maxlen, void *value, int len)
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{
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if (len == sizeof(unsigned int))
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snprintf(output, maxlen, "%d", ntohl(*((unsigned int *)value)));
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else
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snprintf(output, maxlen, "Invalid INT");
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}
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static void dump_short(char *output, int maxlen, void *value, int len)
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{
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if (len == sizeof(unsigned short))
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snprintf(output, maxlen, "%d", ntohs(*((unsigned short *)value)));
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else
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snprintf(output, maxlen, "Invalid SHORT");
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}
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static void dump_byte(char *output, int maxlen, void *value, int len)
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{
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if (len == sizeof(unsigned char))
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snprintf(output, maxlen, "%d", ntohs(*((unsigned char *)value)));
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else
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snprintf(output, maxlen, "Invalid BYTE");
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}
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static struct iax2_ie {
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int ie;
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char *name;
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void (*dump)(char *output, int maxlen, void *value, int len);
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} ies[] = {
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{ IAX_IE_CALLED_NUMBER, "CALLED NUMBER", dump_string },
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{ IAX_IE_CALLING_NUMBER, "CALLING NUMBER", dump_string },
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{ IAX_IE_CALLING_NUMBER, "ANI", dump_string },
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{ IAX_IE_CALLING_NAME, "CALLING NAME", dump_string },
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{ IAX_IE_CALLED_CONTEXT, "CALLED CONTEXT", dump_string },
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{ IAX_IE_USERNAME, "USERNAME", dump_string },
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{ IAX_IE_PASSWORD, "PASSWORD", dump_string },
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{ IAX_IE_CAPABILITY, "CAPABILITY", dump_int },
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{ IAX_IE_FORMAT, "FORMAT", dump_int },
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{ IAX_IE_LANGUAGE, "LANGUAGE", dump_string },
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{ IAX_IE_VERSION, "VERSION", dump_short },
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{ IAX_IE_ADSICPE, "ADSICPE", dump_short },
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{ IAX_IE_DNID, "DNID", dump_string },
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{ IAX_IE_AUTHMETHODS, "AUTHMETHODS", dump_short },
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{ IAX_IE_CHALLENGE, "CHALLENGE", dump_string },
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{ IAX_IE_MD5_RESULT, "MD5 RESULT", dump_string },
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{ IAX_IE_RSA_RESULT, "RSA RESULT", dump_string },
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{ IAX_IE_APPARENT_ADDR, "APPARENT ADDRESS", dump_addr },
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{ IAX_IE_REFRESH, "REFRESH", dump_short },
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{ IAX_IE_DPSTATUS, "DIALPLAN STATUS", dump_short },
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{ IAX_IE_CALLNO, "CALL NUMBER", dump_short },
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{ IAX_IE_CAUSE, "CAUSE", dump_string },
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{ IAX_IE_IAX_UNKNOWN, "UNKNOWN IAX CMD", dump_byte },
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{ IAX_IE_MSGCOUNT, "MESSAGE COUNT", dump_short },
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{ IAX_IE_AUTOANSWER, "AUTO ANSWER REQ" },
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};
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const char *iax_ie2str(int ie)
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{
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int x;
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for (x=0;x<sizeof(ies) / sizeof(ies[0]); x++) {
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if (ies[x].ie == ie)
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return ies[x].name;
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}
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return "Unknown IE";
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}
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static void dump_ies(unsigned char *iedata, int len)
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{
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int ielen;
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int ie;
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int x;
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int found;
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char interp[80];
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char tmp[256];
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if (len < 2)
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return;
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while(len > 2) {
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ie = iedata[0];
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ielen = iedata[1];
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if (ielen + 2> len) {
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snprintf(tmp, sizeof(tmp), "Total IE length of %d bytes exceeds remaining frame length of %d bytes\n", ielen + 2, len);
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outputf(tmp);
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return;
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}
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found = 0;
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for (x=0;x<sizeof(ies) / sizeof(ies[0]); x++) {
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if (ies[x].ie == ie) {
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if (ies[x].dump) {
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ies[x].dump(interp, sizeof(interp), iedata + 2, ielen);
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snprintf(tmp, sizeof(tmp), " %-15.15s : %s\n", ies[x].name, interp);
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outputf(tmp);
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} else {
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snprintf(tmp, sizeof(tmp), " %-15.15s : Present\n", ies[x].name);
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outputf(tmp);
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}
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found++;
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}
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}
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if (!found) {
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snprintf(tmp, sizeof(tmp), " Unknown IE %03d : Present\n", ie);
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outputf(tmp);
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}
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iedata += (2 + ielen);
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len -= (2 + ielen);
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}
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outputf("\n");
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}
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void iax_showframe(struct ast_iax2_frame *f, struct ast_iax2_full_hdr *fhi, int rx, struct sockaddr_in *sin, int datalen)
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{
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char *frames[] = {
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"(0?)",
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"DTMF ",
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"VOICE ",
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"VIDEO ",
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"CONTROL",
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"NULL ",
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"IAX ",
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"TEXT ",
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"IMAGE " };
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char *iaxs[] = {
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"(0?)",
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"NEW ",
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"PING ",
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"PONG ",
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"ACK ",
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"HANGUP ",
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"REJECT ",
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"ACCEPT ",
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"AUTHREQ",
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"AUTHREP",
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"INVAL ",
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"LAGRQ ",
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"LAGRP ",
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"REGREQ ",
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"REGAUTH",
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"REGACK ",
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"REGREJ ",
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"REGREL ",
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"VNAK ",
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"DPREQ ",
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"DPREP ",
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"DIAL ",
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"TXREQ ",
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"TXCNT ",
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"TXACC ",
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"TXREADY",
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"TXREL ",
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"TXREJ ",
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"QUELCH ",
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"UNQULCH",
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"POKE",
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"PAGE",
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"MWI",
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"UNSUPPORTED",
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};
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char *cmds[] = {
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"(0?)",
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"HANGUP ",
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"RING ",
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"RINGING",
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"ANSWER ",
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"BUSY ",
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"TKOFFHK ",
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"OFFHOOK" };
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struct ast_iax2_full_hdr *fh;
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char retries[20];
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char class2[20];
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char subclass2[20];
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char *class;
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char *subclass;
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char tmp[256];
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if (f) {
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fh = f->data;
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snprintf(retries, sizeof(retries), "%03d", f->retries);
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} else {
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fh = fhi;
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if (ntohs(fh->dcallno) & IAX_FLAG_RETRANS)
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strcpy(retries, "Yes");
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else
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strcpy(retries, "No");
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}
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if (!(ntohs(fh->scallno) & IAX_FLAG_FULL)) {
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/* Don't mess with mini-frames */
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return;
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}
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if (fh->type > sizeof(frames)/sizeof(char *)) {
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snprintf(class2, sizeof(class2), "(%d?)", fh->type);
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class = class2;
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} else {
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class = frames[(int)fh->type];
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}
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if (fh->type == AST_FRAME_DTMF) {
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sprintf(subclass2, "%c", fh->csub);
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subclass = subclass2;
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} else if (fh->type == AST_FRAME_IAX) {
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if (fh->csub >= sizeof(iaxs)/sizeof(iaxs[0])) {
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snprintf(subclass2, sizeof(subclass2), "(%d?)", fh->csub);
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subclass = subclass2;
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} else {
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subclass = iaxs[(int)fh->csub];
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}
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} else if (fh->type == AST_FRAME_CONTROL) {
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if (fh->csub > sizeof(cmds)/sizeof(char *)) {
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snprintf(subclass2, sizeof(subclass2), "(%d?)", fh->csub);
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subclass = subclass2;
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} else {
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subclass = cmds[(int)fh->csub];
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}
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} else {
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snprintf(subclass2, sizeof(subclass2), "%d", fh->csub);
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subclass = subclass2;
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}
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snprintf(tmp, sizeof(tmp),
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"%s-Frame Retry[%s] -- OSeqno: %3.3d ISeqno: %3.3d Type: %s Subclass: %s\n",
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(rx ? "Rx" : "Tx"),
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retries, fh->oseqno, fh->iseqno, class, subclass);
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outputf(tmp);
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snprintf(tmp, sizeof(tmp),
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" Timestamp: %05dms SCall: %5.5d DCall: %5.5d [%s:%d]\n",
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ntohl(fh->ts),
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ntohs(fh->scallno) & ~IAX_FLAG_FULL, ntohs(fh->dcallno) & ~IAX_FLAG_RETRANS,
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inet_ntoa(sin->sin_addr), ntohs(sin->sin_port));
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outputf(tmp);
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if (fh->type == AST_FRAME_IAX)
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dump_ies(fh->iedata, datalen);
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}
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int iax_ie_append_raw(struct iax_ie_data *ied, unsigned char ie, void *data, int datalen)
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{
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char tmp[256];
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if (datalen > (sizeof(ied->buf) - ied->pos)) {
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snprintf(tmp, sizeof(tmp), "Out of space for ie '%s' (%d), need %d have %d\n", iax_ie2str(ie), ie, datalen, sizeof(ied->buf) - ied->pos);
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errorf(tmp);
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return -1;
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}
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ied->buf[ied->pos++] = ie;
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ied->buf[ied->pos++] = datalen;
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memcpy(ied->buf + ied->pos, data, datalen);
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ied->pos += datalen;
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return 0;
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}
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int iax_ie_append_addr(struct iax_ie_data *ied, unsigned char ie, struct sockaddr_in *sin)
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{
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return iax_ie_append_raw(ied, ie, sin, sizeof(struct sockaddr_in));
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}
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int iax_ie_append_int(struct iax_ie_data *ied, unsigned char ie, unsigned int value)
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{
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unsigned int newval;
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newval = htonl(value);
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return iax_ie_append_raw(ied, ie, &newval, sizeof(newval));
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}
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int iax_ie_append_short(struct iax_ie_data *ied, unsigned char ie, unsigned short value)
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{
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unsigned short newval;
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newval = htons(value);
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return iax_ie_append_raw(ied, ie, &newval, sizeof(newval));
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}
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int iax_ie_append_str(struct iax_ie_data *ied, unsigned char ie, unsigned char *str)
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{
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return iax_ie_append_raw(ied, ie, str, strlen(str));
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}
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int iax_ie_append_byte(struct iax_ie_data *ied, unsigned char ie, unsigned char dat)
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{
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return iax_ie_append_raw(ied, ie, &dat, 1);
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}
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int iax_ie_append(struct iax_ie_data *ied, unsigned char ie)
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{
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return iax_ie_append_raw(ied, ie, NULL, 0);
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}
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void iax_set_output(void (*func)(const char *))
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{
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outputf = func;
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}
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void iax_set_error(void (*func)(const char *))
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{
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errorf = func;
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}
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