![seanbright](/assets/img/avatar_default.png)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@136917 f38db490-d61c-443f-a65b-d21fe96a405b
1119 lines
33 KiB
C
1119 lines
33 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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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 Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Implementation of Inter-Asterisk eXchange Protocol, v 2
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*
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* \author Mark Spencer <markster@digium.com>
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "asterisk/frame.h"
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#include "asterisk/utils.h"
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#include "asterisk/unaligned.h"
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#include "asterisk/config.h"
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#include "asterisk/lock.h"
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#include "asterisk/threadstorage.h"
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#include "iax2.h"
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#include "iax2-parser.h"
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#include "iax2-provision.h"
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static int frames = 0;
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static int iframes = 0;
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static int oframes = 0;
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#if !defined(LOW_MEMORY)
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static void frame_cache_cleanup(void *data);
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/*! \brief A per-thread cache of iax_frame structures */
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AST_THREADSTORAGE_CUSTOM(frame_cache, NULL, frame_cache_cleanup);
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/*! \brief This is just so iax_frames, a list head struct for holding a list of
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* iax_frame structures, is defined. */
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AST_LIST_HEAD_NOLOCK(iax_frame_list, iax_frame);
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struct iax_frames {
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struct iax_frame_list list;
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size_t size;
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};
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#define FRAME_CACHE_MAX_SIZE 20
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#endif
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static void internaloutput(const char *str)
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{
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fputs(str, stdout);
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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 == (int)sizeof(sin)) {
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memcpy(&sin, value, len);
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snprintf(output, maxlen, "IPV4 %s:%d", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
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} else {
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ast_copy_string(output, "Invalid Address", maxlen);
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}
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}
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static void dump_string_hex(char *output, int maxlen, void *value, int len)
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{
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int i = 0;
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while (len-- && (i + 1) * 4 < maxlen) {
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sprintf(output + (4 * i), "\\x%2.2x", *((unsigned char *)value + i));
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i++;
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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_prefs(char *output, int maxlen, void *value, int len)
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{
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struct ast_codec_pref pref;
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int total_len = 0;
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maxlen--;
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total_len = 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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ast_codec_pref_convert(&pref, output, total_len, 0);
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memset(output,0,total_len);
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ast_codec_pref_string(&pref, output, total_len);
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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 == (int)sizeof(unsigned int))
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snprintf(output, maxlen, "%lu", (unsigned long)ntohl(get_unaligned_uint32(value)));
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else
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ast_copy_string(output, "Invalid INT", maxlen);
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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 == (int)sizeof(unsigned short))
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snprintf(output, maxlen, "%d", ntohs(get_unaligned_uint16(value)));
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else
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ast_copy_string(output, "Invalid SHORT", maxlen);
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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 == (int)sizeof(unsigned char))
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snprintf(output, maxlen, "%d", *((unsigned char *)value));
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else
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ast_copy_string(output, "Invalid BYTE", maxlen);
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}
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static void dump_datetime(char *output, int maxlen, void *value, int len)
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{
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struct ast_tm tm;
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unsigned long val = (unsigned long) ntohl(get_unaligned_uint32(value));
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if (len == (int)sizeof(unsigned int)) {
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tm.tm_sec = (val & 0x1f) << 1;
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tm.tm_min = (val >> 5) & 0x3f;
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tm.tm_hour = (val >> 11) & 0x1f;
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tm.tm_mday = (val >> 16) & 0x1f;
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tm.tm_mon = ((val >> 21) & 0x0f) - 1;
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tm.tm_year = ((val >> 25) & 0x7f) + 100;
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ast_strftime(output, maxlen, "%Y-%m-%d %T", &tm);
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} else
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ast_copy_string(output, "Invalid DATETIME format!", maxlen);
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}
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static void dump_ipaddr(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 == (int)sizeof(unsigned int)) {
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memcpy(&sin.sin_addr, value, len);
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snprintf(output, maxlen, "%s", ast_inet_ntoa(sin.sin_addr));
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} else
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ast_copy_string(output, "Invalid IPADDR", maxlen);
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}
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static void dump_prov_flags(char *output, int maxlen, void *value, int len)
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{
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char buf[256] = "";
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if (len == (int)sizeof(unsigned int))
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snprintf(output, maxlen, "%lu (%s)", (unsigned long)ntohl(get_unaligned_uint32(value)),
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iax_provflags2str(buf, sizeof(buf), ntohl(get_unaligned_uint32(value))));
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else
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ast_copy_string(output, "Invalid INT", maxlen);
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}
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static void dump_samprate(char *output, int maxlen, void *value, int len)
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{
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char tmp[256]="";
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int sr;
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if (len == (int)sizeof(unsigned short)) {
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sr = ntohs(*((unsigned short *)value));
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if (sr & IAX_RATE_8KHZ)
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strcat(tmp, ",8khz");
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if (sr & IAX_RATE_11KHZ)
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strcat(tmp, ",11.025khz");
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if (sr & IAX_RATE_16KHZ)
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strcat(tmp, ",16khz");
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if (sr & IAX_RATE_22KHZ)
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strcat(tmp, ",22.05khz");
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if (sr & IAX_RATE_44KHZ)
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strcat(tmp, ",44.1khz");
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if (sr & IAX_RATE_48KHZ)
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strcat(tmp, ",48khz");
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if (strlen(tmp))
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ast_copy_string(output, &tmp[1], maxlen);
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else
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ast_copy_string(output, "None Specified!\n", maxlen);
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} else
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ast_copy_string(output, "Invalid SHORT", maxlen);
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}
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static void dump_prov_ies(char *output, int maxlen, unsigned char *iedata, int len);
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static void dump_prov(char *output, int maxlen, void *value, int len)
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{
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dump_prov_ies(output, maxlen, value, len);
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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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} infoelts[] = {
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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_ANI, "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_hex },
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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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{ IAX_IE_TRANSFERID, "TRANSFER ID", dump_int },
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{ IAX_IE_RDNIS, "REFERRING DNIS", dump_string },
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{ IAX_IE_PROVISIONING, "PROVISIONING", dump_prov },
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{ IAX_IE_AESPROVISIONING, "AES PROVISIONG" },
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{ IAX_IE_DATETIME, "DATE TIME", dump_datetime },
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{ IAX_IE_DEVICETYPE, "DEVICE TYPE", dump_string },
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{ IAX_IE_SERVICEIDENT, "SERVICE IDENT", dump_string },
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{ IAX_IE_FIRMWAREVER, "FIRMWARE VER", dump_short },
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{ IAX_IE_FWBLOCKDESC, "FW BLOCK DESC", dump_int },
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{ IAX_IE_FWBLOCKDATA, "FW BLOCK DATA" },
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{ IAX_IE_PROVVER, "PROVISIONG VER", dump_int },
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{ IAX_IE_CALLINGPRES, "CALLING PRESNTN", dump_byte },
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{ IAX_IE_CALLINGTON, "CALLING TYPEOFNUM", dump_byte },
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{ IAX_IE_CALLINGTNS, "CALLING TRANSITNET", dump_short },
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{ IAX_IE_SAMPLINGRATE, "SAMPLINGRATE", dump_samprate },
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{ IAX_IE_CAUSECODE, "CAUSE CODE", dump_byte },
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{ IAX_IE_ENCRYPTION, "ENCRYPTION", dump_short },
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{ IAX_IE_ENCKEY, "ENCRYPTION KEY" },
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{ IAX_IE_CODEC_PREFS, "CODEC_PREFS", dump_prefs },
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{ IAX_IE_RR_JITTER, "RR_JITTER", dump_int },
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{ IAX_IE_RR_LOSS, "RR_LOSS", dump_int },
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{ IAX_IE_RR_PKTS, "RR_PKTS", dump_int },
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{ IAX_IE_RR_DELAY, "RR_DELAY", dump_short },
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{ IAX_IE_RR_DROPPED, "RR_DROPPED", dump_int },
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{ IAX_IE_RR_OOO, "RR_OUTOFORDER", dump_int },
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{ IAX_IE_VARIABLE, "VARIABLE", dump_string },
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{ IAX_IE_OSPTOKEN, "OSPTOKEN" },
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};
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static struct iax2_ie prov_ies[] = {
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{ PROV_IE_USEDHCP, "USEDHCP" },
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{ PROV_IE_IPADDR, "IPADDR", dump_ipaddr },
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{ PROV_IE_SUBNET, "SUBNET", dump_ipaddr },
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{ PROV_IE_GATEWAY, "GATEWAY", dump_ipaddr },
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{ PROV_IE_PORTNO, "BINDPORT", dump_short },
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{ PROV_IE_USER, "USERNAME", dump_string },
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{ PROV_IE_PASS, "PASSWORD", dump_string },
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{ PROV_IE_LANG, "LANGUAGE", dump_string },
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{ PROV_IE_TOS, "TYPEOFSERVICE", dump_byte },
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{ PROV_IE_FLAGS, "FLAGS", dump_prov_flags },
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{ PROV_IE_FORMAT, "FORMAT", dump_int },
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{ PROV_IE_AESKEY, "AESKEY" },
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{ PROV_IE_SERVERIP, "SERVERIP", dump_ipaddr },
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{ PROV_IE_SERVERPORT, "SERVERPORT", dump_short },
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{ PROV_IE_NEWAESKEY, "NEWAESKEY" },
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{ PROV_IE_PROVVER, "PROV VERSION", dump_int },
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{ PROV_IE_ALTSERVER, "ALTSERVERIP", dump_ipaddr },
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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 < ARRAY_LEN(infoelts); x++) {
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if (infoelts[x].ie == ie)
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return infoelts[x].name;
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}
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return "Unknown IE";
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}
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static void dump_prov_ies(char *output, int maxlen, 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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strcpy(output, "\n");
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maxlen -= strlen(output); output += strlen(output);
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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, (int)sizeof(tmp), "Total Prov IE length of %d bytes exceeds remaining prov frame length of %d bytes\n", ielen + 2, len);
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ast_copy_string(output, tmp, maxlen);
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maxlen -= strlen(output);
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output += strlen(output);
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return;
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}
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found = 0;
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for (x=0;x<(int)sizeof(prov_ies) / (int)sizeof(prov_ies[0]); x++) {
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if (prov_ies[x].ie == ie) {
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if (prov_ies[x].dump) {
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prov_ies[x].dump(interp, (int)sizeof(interp), iedata + 2, ielen);
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snprintf(tmp, (int)sizeof(tmp), " %-15.15s : %s\n", prov_ies[x].name, interp);
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ast_copy_string(output, tmp, maxlen);
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maxlen -= strlen(output); output += strlen(output);
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} else {
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if (ielen)
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snprintf(interp, (int)sizeof(interp), "%d bytes", ielen);
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else
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strcpy(interp, "Present");
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snprintf(tmp, (int)sizeof(tmp), " %-15.15s : %s\n", prov_ies[x].name, interp);
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ast_copy_string(output, tmp, maxlen);
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maxlen -= strlen(output); output += strlen(output);
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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, (int)sizeof(tmp), " Unknown Prov IE %03d : Present\n", ie);
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ast_copy_string(output, tmp, maxlen);
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maxlen -= strlen(output); output += strlen(output);
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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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}
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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[1024];
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char tmp[1024];
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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, (int)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 < ARRAY_LEN(infoelts); x++) {
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if (infoelts[x].ie == ie) {
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if (infoelts[x].dump) {
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infoelts[x].dump(interp, (int)sizeof(interp), iedata + 2, ielen);
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snprintf(tmp, (int)sizeof(tmp), " %-15.15s : %s\n", infoelts[x].name, interp);
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outputf(tmp);
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} else {
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if (ielen)
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snprintf(interp, (int)sizeof(interp), "%d bytes", ielen);
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else
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strcpy(interp, "Present");
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snprintf(tmp, (int)sizeof(tmp), " %-15.15s : %s\n", infoelts[x].name, interp);
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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, (int)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 iax_frame *f, struct ast_iax2_full_hdr *fhi, int rx, struct sockaddr_in *sin, int datalen)
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{
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const char *framelist[] = {
|
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"(0?)",
|
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"DTMF_E ",
|
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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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"HTML ",
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"CNG ",
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"MODEM ",
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"DTMF_B ",
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};
|
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const char *iaxs[] = {
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"(0?)",
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"NEW ",
|
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"PING ",
|
|
"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 ",
|
|
"TXREJ ",
|
|
"QUELCH ",
|
|
"UNQULCH",
|
|
"POKE ",
|
|
"PAGE ",
|
|
"MWI ",
|
|
"UNSPRTD",
|
|
"TRANSFR",
|
|
"PROVISN",
|
|
"FWDWNLD",
|
|
"FWDATA ",
|
|
"TXMEDIA"
|
|
};
|
|
const char *cmds[] = {
|
|
"(0?)",
|
|
"HANGUP ",
|
|
"RING ",
|
|
"RINGING",
|
|
"ANSWER ",
|
|
"BUSY ",
|
|
"TKOFFHK",
|
|
"OFFHOOK",
|
|
"CONGSTN",
|
|
"FLASH ",
|
|
"WINK ",
|
|
"OPTION ",
|
|
"RDKEY ",
|
|
"RDUNKEY",
|
|
"PROGRES",
|
|
"PROCDNG",
|
|
"HOLD ",
|
|
"UNHOLD ",
|
|
"VIDUPDT", };
|
|
struct ast_iax2_full_hdr *fh;
|
|
char retries[20];
|
|
char class2[20];
|
|
char subclass2[20];
|
|
const char *class;
|
|
const char *subclass;
|
|
char *dir;
|
|
char tmp[512];
|
|
|
|
switch(rx) {
|
|
case 0:
|
|
dir = "Tx";
|
|
break;
|
|
case 2:
|
|
dir = "TE";
|
|
break;
|
|
case 3:
|
|
dir = "RD";
|
|
break;
|
|
default:
|
|
dir = "Rx";
|
|
break;
|
|
}
|
|
if (f) {
|
|
fh = f->data;
|
|
snprintf(retries, sizeof(retries), "%03d", f->retries);
|
|
} else {
|
|
fh = fhi;
|
|
if (ntohs(fh->dcallno) & IAX_FLAG_RETRANS)
|
|
strcpy(retries, "Yes");
|
|
else
|
|
strcpy(retries, " No");
|
|
}
|
|
if (!(ntohs(fh->scallno) & IAX_FLAG_FULL)) {
|
|
/* Don't mess with mini-frames */
|
|
return;
|
|
}
|
|
if (fh->type >= ARRAY_LEN(framelist)) {
|
|
snprintf(class2, sizeof(class2), "(%d?)", fh->type);
|
|
class = class2;
|
|
} else {
|
|
class = framelist[(int)fh->type];
|
|
}
|
|
if (fh->type == AST_FRAME_DTMF_BEGIN || fh->type == AST_FRAME_DTMF_END) {
|
|
sprintf(subclass2, "%c", fh->csub);
|
|
subclass = subclass2;
|
|
} else if (fh->type == AST_FRAME_IAX) {
|
|
if (fh->csub >= (int)sizeof(iaxs)/(int)sizeof(iaxs[0])) {
|
|
snprintf(subclass2, sizeof(subclass2), "(%d?)", fh->csub);
|
|
subclass = subclass2;
|
|
} else {
|
|
subclass = iaxs[(int)fh->csub];
|
|
}
|
|
} else if (fh->type == AST_FRAME_CONTROL) {
|
|
if (fh->csub >= (int)sizeof(cmds)/(int)sizeof(cmds[0])) {
|
|
snprintf(subclass2, sizeof(subclass2), "(%d?)", fh->csub);
|
|
subclass = subclass2;
|
|
} else {
|
|
subclass = cmds[(int)fh->csub];
|
|
}
|
|
} else {
|
|
snprintf(subclass2, sizeof(subclass2), "%d", fh->csub);
|
|
subclass = subclass2;
|
|
}
|
|
snprintf(tmp, sizeof(tmp),
|
|
"%s-Frame Retry[%s] -- OSeqno: %3.3d ISeqno: %3.3d Type: %s Subclass: %s\n",
|
|
dir,
|
|
retries, fh->oseqno, fh->iseqno, class, subclass);
|
|
outputf(tmp);
|
|
snprintf(tmp, sizeof(tmp),
|
|
" Timestamp: %05lums SCall: %5.5d DCall: %5.5d [%s:%d]\n",
|
|
(unsigned long)ntohl(fh->ts),
|
|
ntohs(fh->scallno) & ~IAX_FLAG_FULL, ntohs(fh->dcallno) & ~IAX_FLAG_RETRANS,
|
|
ast_inet_ntoa(sin->sin_addr), ntohs(sin->sin_port));
|
|
outputf(tmp);
|
|
if (fh->type == AST_FRAME_IAX)
|
|
dump_ies(fh->iedata, datalen);
|
|
}
|
|
|
|
int iax_ie_append_raw(struct iax_ie_data *ied, unsigned char ie, const void *data, int datalen)
|
|
{
|
|
char tmp[256];
|
|
if (datalen > ((int)sizeof(ied->buf) - ied->pos)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Out of space for ie '%s' (%d), need %d have %d\n", iax_ie2str(ie), ie, datalen, (int)sizeof(ied->buf) - ied->pos);
|
|
errorf(tmp);
|
|
return -1;
|
|
}
|
|
ied->buf[ied->pos++] = ie;
|
|
ied->buf[ied->pos++] = datalen;
|
|
memcpy(ied->buf + ied->pos, data, datalen);
|
|
ied->pos += datalen;
|
|
return 0;
|
|
}
|
|
|
|
int iax_ie_append_addr(struct iax_ie_data *ied, unsigned char ie, const struct sockaddr_in *sin)
|
|
{
|
|
return iax_ie_append_raw(ied, ie, sin, (int)sizeof(struct sockaddr_in));
|
|
}
|
|
|
|
int iax_ie_append_int(struct iax_ie_data *ied, unsigned char ie, unsigned int value)
|
|
{
|
|
unsigned int newval;
|
|
newval = htonl(value);
|
|
return iax_ie_append_raw(ied, ie, &newval, (int)sizeof(newval));
|
|
}
|
|
|
|
int iax_ie_append_short(struct iax_ie_data *ied, unsigned char ie, unsigned short value)
|
|
{
|
|
unsigned short newval;
|
|
newval = htons(value);
|
|
return iax_ie_append_raw(ied, ie, &newval, (int)sizeof(newval));
|
|
}
|
|
|
|
int iax_ie_append_str(struct iax_ie_data *ied, unsigned char ie, const char *str)
|
|
{
|
|
return iax_ie_append_raw(ied, ie, str, strlen(str));
|
|
}
|
|
|
|
int iax_ie_append_byte(struct iax_ie_data *ied, unsigned char ie, unsigned char dat)
|
|
{
|
|
return iax_ie_append_raw(ied, ie, &dat, 1);
|
|
}
|
|
|
|
int iax_ie_append(struct iax_ie_data *ied, unsigned char ie)
|
|
{
|
|
return iax_ie_append_raw(ied, ie, NULL, 0);
|
|
}
|
|
|
|
void iax_set_output(void (*func)(const char *))
|
|
{
|
|
outputf = func;
|
|
}
|
|
|
|
void iax_set_error(void (*func)(const char *))
|
|
{
|
|
errorf = func;
|
|
}
|
|
|
|
int iax_parse_ies(struct iax_ies *ies, unsigned char *data, int datalen)
|
|
{
|
|
/* Parse data into information elements */
|
|
int len;
|
|
int ie;
|
|
char tmp[256], *tmp2;
|
|
struct ast_variable *var, *var2, *prev;
|
|
unsigned int count;
|
|
memset(ies, 0, (int)sizeof(struct iax_ies));
|
|
ies->msgcount = -1;
|
|
ies->firmwarever = -1;
|
|
ies->calling_ton = -1;
|
|
ies->calling_tns = -1;
|
|
ies->calling_pres = -1;
|
|
ies->samprate = IAX_RATE_8KHZ;
|
|
while(datalen >= 2) {
|
|
ie = data[0];
|
|
len = data[1];
|
|
if (len > datalen - 2) {
|
|
errorf("Information element length exceeds message size\n");
|
|
return -1;
|
|
}
|
|
switch(ie) {
|
|
case IAX_IE_CALLED_NUMBER:
|
|
ies->called_number = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_CALLING_NUMBER:
|
|
ies->calling_number = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_CALLING_ANI:
|
|
ies->calling_ani = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_CALLING_NAME:
|
|
ies->calling_name = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_CALLED_CONTEXT:
|
|
ies->called_context = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_USERNAME:
|
|
ies->username = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_PASSWORD:
|
|
ies->password = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_CODEC_PREFS:
|
|
ies->codec_prefs = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_CAPABILITY:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting capability to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->capability = ntohl(get_unaligned_uint32(data + 2));
|
|
break;
|
|
case IAX_IE_FORMAT:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting format to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->format = ntohl(get_unaligned_uint32(data + 2));
|
|
break;
|
|
case IAX_IE_LANGUAGE:
|
|
ies->language = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_VERSION:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting version to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->version = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_ADSICPE:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting adsicpe to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->adsicpe = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_SAMPLINGRATE:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting samplingrate to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->samprate = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_DNID:
|
|
ies->dnid = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_RDNIS:
|
|
ies->rdnis = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_AUTHMETHODS:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting authmethods to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->authmethods = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_ENCRYPTION:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting encryption to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->encmethods = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_CHALLENGE:
|
|
ies->challenge = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_MD5_RESULT:
|
|
ies->md5_result = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_RSA_RESULT:
|
|
ies->rsa_result = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_APPARENT_ADDR:
|
|
ies->apparent_addr = ((struct sockaddr_in *)(data + 2));
|
|
break;
|
|
case IAX_IE_REFRESH:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting refresh to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->refresh = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_DPSTATUS:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting dpstatus to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->dpstatus = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_CALLNO:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting callno to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->callno = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_CAUSE:
|
|
ies->cause = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_CAUSECODE:
|
|
if (len != 1) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting causecode to be single byte but was %d\n", len);
|
|
errorf(tmp);
|
|
} else {
|
|
ies->causecode = data[2];
|
|
}
|
|
break;
|
|
case IAX_IE_IAX_UNKNOWN:
|
|
if (len == 1)
|
|
ies->iax_unknown = data[2];
|
|
else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected single byte Unknown command, but was %d long\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case IAX_IE_MSGCOUNT:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting msgcount to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->msgcount = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_AUTOANSWER:
|
|
ies->autoanswer = 1;
|
|
break;
|
|
case IAX_IE_MUSICONHOLD:
|
|
ies->musiconhold = 1;
|
|
break;
|
|
case IAX_IE_TRANSFERID:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting transferid to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->transferid = ntohl(get_unaligned_uint32(data + 2));
|
|
break;
|
|
case IAX_IE_DATETIME:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting date/time to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->datetime = ntohl(get_unaligned_uint32(data + 2));
|
|
break;
|
|
case IAX_IE_FIRMWAREVER:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting firmwarever to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->firmwarever = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_DEVICETYPE:
|
|
ies->devicetype = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_SERVICEIDENT:
|
|
ies->serviceident = (char *)data + 2;
|
|
break;
|
|
case IAX_IE_FWBLOCKDESC:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected block desc to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->fwdesc = ntohl(get_unaligned_uint32(data + 2));
|
|
break;
|
|
case IAX_IE_FWBLOCKDATA:
|
|
ies->fwdata = data + 2;
|
|
ies->fwdatalen = len;
|
|
break;
|
|
case IAX_IE_ENCKEY:
|
|
ies->enckey = data + 2;
|
|
ies->enckeylen = len;
|
|
break;
|
|
case IAX_IE_PROVVER:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected provisioning version to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else {
|
|
ies->provverpres = 1;
|
|
ies->provver = ntohl(get_unaligned_uint32(data + 2));
|
|
}
|
|
break;
|
|
case IAX_IE_CALLINGPRES:
|
|
if (len == 1)
|
|
ies->calling_pres = data[2];
|
|
else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected single byte callingpres, but was %d long\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case IAX_IE_CALLINGTON:
|
|
if (len == 1)
|
|
ies->calling_ton = data[2];
|
|
else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected single byte callington, but was %d long\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case IAX_IE_CALLINGTNS:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting callingtns to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->calling_tns = ntohs(get_unaligned_uint16(data + 2));
|
|
break;
|
|
case IAX_IE_RR_JITTER:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected jitter rr to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else {
|
|
ies->rr_jitter = ntohl(get_unaligned_uint32(data + 2));
|
|
}
|
|
break;
|
|
case IAX_IE_RR_LOSS:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected loss rr to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else {
|
|
ies->rr_loss = ntohl(get_unaligned_uint32(data + 2));
|
|
}
|
|
break;
|
|
case IAX_IE_RR_PKTS:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected packets rr to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else {
|
|
ies->rr_pkts = ntohl(get_unaligned_uint32(data + 2));
|
|
}
|
|
break;
|
|
case IAX_IE_RR_DELAY:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected loss rr to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else {
|
|
ies->rr_delay = ntohs(get_unaligned_uint16(data + 2));
|
|
}
|
|
break;
|
|
case IAX_IE_RR_DROPPED:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected packets rr to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else {
|
|
ies->rr_dropped = ntohl(get_unaligned_uint32(data + 2));
|
|
}
|
|
break;
|
|
case IAX_IE_RR_OOO:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected packets rr to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else {
|
|
ies->rr_ooo = ntohl(get_unaligned_uint32(data + 2));
|
|
}
|
|
break;
|
|
case IAX_IE_VARIABLE:
|
|
ast_copy_string(tmp, (char *)data + 2, len + 1);
|
|
tmp2 = strchr(tmp, '=');
|
|
if (tmp2)
|
|
*tmp2++ = '\0';
|
|
else
|
|
tmp2 = "";
|
|
/* Existing variable or new variable? */
|
|
for (var2 = ies->vars, prev = NULL; var2; prev = var2, var2 = var2->next) {
|
|
if (strcmp(tmp, var2->name) == 0) {
|
|
int length = strlen(var2->value) + strlen(tmp2) + 1;
|
|
char *tmp3 = alloca(length);
|
|
snprintf(tmp3, length, "%s%s", var2->value, tmp2);
|
|
var = ast_variable_new(tmp, tmp3, var2->file);
|
|
var->next = var2->next;
|
|
if (prev)
|
|
prev->next = var;
|
|
else
|
|
ies->vars = var;
|
|
ast_free(var2);
|
|
break;
|
|
}
|
|
}
|
|
if (!var2) {
|
|
var = ast_variable_new(tmp, tmp2, "");
|
|
var->next = ies->vars;
|
|
ies->vars = var;
|
|
}
|
|
break;
|
|
case IAX_IE_OSPTOKEN:
|
|
if ((count = data[2]) < IAX_MAX_OSPBLOCK_NUM) {
|
|
ies->osptokenblock[count] = (char *)data + 2 + 1;
|
|
ies->ospblocklength[count] = len - 1;
|
|
} else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected OSP token block index to be 0~%d but was %d\n", IAX_MAX_OSPBLOCK_NUM - 1, count);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
default:
|
|
snprintf(tmp, (int)sizeof(tmp), "Ignoring unknown information element '%s' (%d) of length %d\n", iax_ie2str(ie), ie, len);
|
|
outputf(tmp);
|
|
}
|
|
/* Overwrite information element with 0, to null terminate previous portion */
|
|
data[0] = 0;
|
|
datalen -= (len + 2);
|
|
data += (len + 2);
|
|
}
|
|
/* Null-terminate last field */
|
|
*data = '\0';
|
|
if (datalen) {
|
|
errorf("Invalid information element contents, strange boundary\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void iax_frame_wrap(struct iax_frame *fr, struct ast_frame *f)
|
|
{
|
|
fr->af.frametype = f->frametype;
|
|
fr->af.subclass = f->subclass;
|
|
fr->af.mallocd = 0; /* Our frame is static relative to the container */
|
|
fr->af.datalen = f->datalen;
|
|
fr->af.samples = f->samples;
|
|
fr->af.offset = AST_FRIENDLY_OFFSET;
|
|
fr->af.src = f->src;
|
|
fr->af.delivery.tv_sec = 0;
|
|
fr->af.delivery.tv_usec = 0;
|
|
fr->af.data.ptr = fr->afdata;
|
|
fr->af.len = f->len;
|
|
if (fr->af.datalen) {
|
|
size_t copy_len = fr->af.datalen;
|
|
if (copy_len > fr->afdatalen) {
|
|
ast_log(LOG_ERROR, "Losing frame data because destination buffer size '%d' bytes not big enough for '%d' bytes in the frame\n",
|
|
(int) fr->afdatalen, (int) fr->af.datalen);
|
|
copy_len = fr->afdatalen;
|
|
}
|
|
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
|
/* We need to byte-swap slinear samples from network byte order */
|
|
if ((fr->af.frametype == AST_FRAME_VOICE) && (fr->af.subclass == AST_FORMAT_SLINEAR)) {
|
|
/* 2 bytes / sample for SLINEAR */
|
|
ast_swapcopy_samples(fr->af.data.ptr, f->data.ptr, copy_len / 2);
|
|
} else
|
|
#endif
|
|
memcpy(fr->af.data.ptr, f->data.ptr, copy_len);
|
|
}
|
|
}
|
|
|
|
struct iax_frame *iax_frame_new(int direction, int datalen, unsigned int cacheable)
|
|
{
|
|
struct iax_frame *fr = NULL;
|
|
|
|
#if !defined(LOW_MEMORY)
|
|
struct iax_frames *iax_frames = NULL;
|
|
struct iax_frame *smallest = NULL;
|
|
|
|
/* Attempt to get a frame from this thread's cache */
|
|
if ((iax_frames = ast_threadstorage_get(&frame_cache, sizeof(*iax_frames)))) {
|
|
smallest = AST_LIST_FIRST(&iax_frames->list);
|
|
AST_LIST_TRAVERSE_SAFE_BEGIN(&iax_frames->list, fr, list) {
|
|
if (fr->afdatalen >= datalen) {
|
|
size_t afdatalen = fr->afdatalen;
|
|
AST_LIST_REMOVE_CURRENT(list);
|
|
iax_frames->size--;
|
|
memset(fr, 0, sizeof(*fr));
|
|
fr->afdatalen = afdatalen;
|
|
break;
|
|
} else if (smallest->afdatalen > fr->afdatalen) {
|
|
smallest = fr;
|
|
}
|
|
}
|
|
AST_LIST_TRAVERSE_SAFE_END;
|
|
}
|
|
if (!fr) {
|
|
if (iax_frames->size >= FRAME_CACHE_MAX_SIZE && smallest) {
|
|
/* Make useless cache into something more useful */
|
|
AST_LIST_REMOVE(&iax_frames->list, smallest, list);
|
|
if (!(fr = ast_realloc(smallest, sizeof(*fr) + datalen))) {
|
|
AST_LIST_INSERT_TAIL(&iax_frames->list, smallest, list);
|
|
return NULL;
|
|
}
|
|
} else if (!(fr = ast_calloc_cache(1, sizeof(*fr) + datalen)))
|
|
return NULL;
|
|
fr->afdatalen = datalen;
|
|
}
|
|
#else
|
|
if (!(fr = ast_calloc(1, sizeof(*fr) + datalen)))
|
|
return NULL;
|
|
fr->afdatalen = datalen;
|
|
#endif
|
|
|
|
|
|
fr->direction = direction;
|
|
fr->retrans = -1;
|
|
fr->cacheable = cacheable;
|
|
|
|
if (fr->direction == DIRECTION_INGRESS)
|
|
ast_atomic_fetchadd_int(&iframes, 1);
|
|
else
|
|
ast_atomic_fetchadd_int(&oframes, 1);
|
|
|
|
ast_atomic_fetchadd_int(&frames, 1);
|
|
|
|
return fr;
|
|
}
|
|
|
|
void iax_frame_free(struct iax_frame *fr)
|
|
{
|
|
#if !defined(LOW_MEMORY)
|
|
struct iax_frames *iax_frames = NULL;
|
|
#endif
|
|
|
|
/* Note: does not remove from scheduler! */
|
|
if (fr->direction == DIRECTION_INGRESS)
|
|
ast_atomic_fetchadd_int(&iframes, -1);
|
|
else if (fr->direction == DIRECTION_OUTGRESS)
|
|
ast_atomic_fetchadd_int(&oframes, -1);
|
|
else {
|
|
errorf("Attempt to double free frame detected\n");
|
|
return;
|
|
}
|
|
ast_atomic_fetchadd_int(&frames, -1);
|
|
|
|
#if !defined(LOW_MEMORY)
|
|
if (!fr->cacheable || !(iax_frames = ast_threadstorage_get(&frame_cache, sizeof(*iax_frames)))) {
|
|
ast_free(fr);
|
|
return;
|
|
}
|
|
|
|
if (iax_frames->size < FRAME_CACHE_MAX_SIZE) {
|
|
fr->direction = 0;
|
|
/* Pseudo-sort: keep smaller frames at the top of the list. This should
|
|
* increase the chance that we pick the smallest applicable frame for use. */
|
|
if (AST_LIST_FIRST(&iax_frames->list) && AST_LIST_FIRST(&iax_frames->list)->afdatalen < fr->afdatalen) {
|
|
AST_LIST_INSERT_TAIL(&iax_frames->list, fr, list);
|
|
} else {
|
|
AST_LIST_INSERT_HEAD(&iax_frames->list, fr, list);
|
|
}
|
|
iax_frames->size++;
|
|
return;
|
|
}
|
|
#endif
|
|
ast_free(fr);
|
|
}
|
|
|
|
#if !defined(LOW_MEMORY)
|
|
static void frame_cache_cleanup(void *data)
|
|
{
|
|
struct iax_frames *framelist = data;
|
|
struct iax_frame *current;
|
|
|
|
while ((current = AST_LIST_REMOVE_HEAD(&framelist->list, list)))
|
|
ast_free(current);
|
|
|
|
ast_free(framelist);
|
|
}
|
|
#endif
|
|
|
|
int iax_get_frames(void) { return frames; }
|
|
int iax_get_iframes(void) { return iframes; }
|
|
int iax_get_oframes(void) { return oframes; }
|