Sat Nov 1 06:29:06 2008

Asterisk developer's documentation

channels

iax2-parser.c File Reference

Implementation of Inter-Asterisk eXchange Protocol, v 2. More...

#include "asterisk.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include "asterisk/frame.h"
#include "asterisk/utils.h"
#include "asterisk/unaligned.h"
#include "asterisk/lock.h"
#include "asterisk/threadstorage.h"
#include "iax2.h"
#include "iax2-parser.h"
#include "iax2-provision.h"

Include dependency graph for iax2-parser.c:

Go to the source code of this file.

Data Structures

struct  iax2_ie
struct  iax_frames

Defines

#define FRAME_CACHE_MAX_SIZE   20

Functions

 AST_LIST_HEAD_NOLOCK (iax_frame_list, iax_frame)
 This is just so iax_frames, a list head struct for holding a list of iax_frame structures, is defined.
 AST_THREADSTORAGE_CUSTOM (frame_cache, frame_cache_init, frame_cache_cleanup)
 A per-thread cache of iax_frame structures.
static void dump_addr (char *output, int maxlen, void *value, int len)
static void dump_byte (char *output, int maxlen, void *value, int len)
static void dump_datetime (char *output, int maxlen, void *value, int len)
static void dump_ies (unsigned char *iedata, int len)
static void dump_int (char *output, int maxlen, void *value, int len)
static void dump_ipaddr (char *output, int maxlen, void *value, int len)
static void dump_prefs (char *output, int maxlen, void *value, int len)
static void dump_prov (char *output, int maxlen, void *value, int len)
static void dump_prov_flags (char *output, int maxlen, void *value, int len)
static void dump_prov_ies (char *output, int maxlen, unsigned char *iedata, int len)
static void dump_samprate (char *output, int maxlen, void *value, int len)
static void dump_short (char *output, int maxlen, void *value, int len)
static void dump_string (char *output, int maxlen, void *value, int len)
static void frame_cache_cleanup (void *data)
void iax_frame_free (struct iax_frame *fr)
iax_frame * iax_frame_new (int direction, int datalen, unsigned int cacheable)
void iax_frame_wrap (struct iax_frame *fr, struct ast_frame *f)
int iax_get_frames (void)
int iax_get_iframes (void)
int iax_get_oframes (void)
const char * iax_ie2str (int ie)
int iax_ie_append (struct iax_ie_data *ied, unsigned char ie)
int iax_ie_append_addr (struct iax_ie_data *ied, unsigned char ie, const struct sockaddr_in *sin)
int iax_ie_append_byte (struct iax_ie_data *ied, unsigned char ie, unsigned char dat)
int iax_ie_append_int (struct iax_ie_data *ied, unsigned char ie, unsigned int value)
int iax_ie_append_raw (struct iax_ie_data *ied, unsigned char ie, const void *data, int datalen)
int iax_ie_append_short (struct iax_ie_data *ied, unsigned char ie, unsigned short value)
int iax_ie_append_str (struct iax_ie_data *ied, unsigned char ie, const char *str)
int iax_parse_ies (struct iax_ies *ies, unsigned char *data, int datalen)
void iax_set_error (void(*func)(const char *))
void iax_set_output (void(*func)(const char *))
void iax_showframe (struct iax_frame *f, struct ast_iax2_full_hdr *fhi, int rx, struct sockaddr_in *sin, int datalen)
static void internalerror (const char *str)
static void internaloutput (const char *str)

Variables

static void(*) errorf (const char *str) = internalerror
static int frames = 0
static struct iax2_ie ies []
static int iframes = 0
static int oframes = 0
static void(*) outputf (const char *str) = internaloutput
static struct iax2_ie prov_ies []

Detailed Description

Implementation of Inter-Asterisk eXchange Protocol, v 2.

Author:
Mark Spencer <markster@digium.com>

Definition in file iax2-parser.c.

Define Documentation

#define FRAME_CACHE_MAX_SIZE   20

Definition at line 68 of file iax2-parser.c.

Function Documentation

AST_LIST_HEAD_NOLOCK ( iax_frame_list  ,
iax_frame   
)

This is just so iax_frames, a list head struct for holding a list of iax_frame structures, is defined.

AST_THREADSTORAGE_CUSTOM ( frame_cache  ,
frame_cache_init  ,
frame_cache_cleanup   
)

A per-thread cache of iax_frame structures.

static void dump_addr ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 84 of file iax2-parser.c.

References ast_inet_ntoa().

00085 {
00086    struct sockaddr_in sin;
00087    if (len == (int)sizeof(sin)) {
00088       memcpy(&sin, value, len);
00089       snprintf(output, maxlen, "IPV4 %s:%d", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
00090    } else {
00091       snprintf(output, maxlen, "Invalid Address");
00092    }
00093 }

static void dump_byte ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 139 of file iax2-parser.c.

00140 {
00141    if (len == (int)sizeof(unsigned char))
00142       snprintf(output, maxlen, "%d", *((unsigned char *)value));
00143    else
00144       ast_copy_string(output, "Invalid BYTE", maxlen);
00145 }

static void dump_datetime ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 147 of file iax2-parser.c.

References get_unaligned_uint32().

00148 {
00149    struct tm tm;
00150    unsigned long val = (unsigned long) ntohl(get_unaligned_uint32(value));
00151    if (len == (int)sizeof(unsigned int)) {
00152       tm.tm_sec  = (val & 0x1f) << 1;
00153       tm.tm_min  = (val >> 5) & 0x3f;
00154       tm.tm_hour = (val >> 11) & 0x1f;
00155       tm.tm_mday = (val >> 16) & 0x1f;
00156       tm.tm_mon  = ((val >> 21) & 0x0f) - 1;
00157       tm.tm_year = ((val >> 25) & 0x7f) + 100;
00158       strftime(output, maxlen, "%Y-%m-%d  %T", &tm); 
00159    } else
00160       ast_copy_string(output, "Invalid DATETIME format!", maxlen);
00161 }

static void dump_ies ( unsigned char *  iedata,
int  len 
) [static]

Definition at line 357 of file iax2-parser.c.

References iax2_ie::dump, iax2_ie::ie, ies, name, and outputf.

Referenced by dundi_showframe(), and iax_showframe().

00358 {
00359    int ielen;
00360    int ie;
00361    int x;
00362    int found;
00363    char interp[1024];
00364    char tmp[1024];
00365    if (len < 2)
00366       return;
00367    while(len > 2) {
00368       ie = iedata[0];
00369       ielen = iedata[1];
00370       if (ielen + 2> len) {
00371          snprintf(tmp, (int)sizeof(tmp), "Total IE length of %d bytes exceeds remaining frame length of %d bytes\n", ielen + 2, len);
00372          outputf(tmp);
00373          return;
00374       }
00375       found = 0;
00376       for (x=0;x<(int)sizeof(ies) / (int)sizeof(ies[0]); x++) {
00377          if (ies[x].ie == ie) {
00378             if (ies[x].dump) {
00379                ies[x].dump(interp, (int)sizeof(interp), iedata + 2, ielen);
00380                snprintf(tmp, (int)sizeof(tmp), "   %-15.15s : %s\n", ies[x].name, interp);
00381                outputf(tmp);
00382             } else {
00383                if (ielen)
00384                   snprintf(interp, (int)sizeof(interp), "%d bytes", ielen);
00385                else
00386                   strcpy(interp, "Present");
00387                snprintf(tmp, (int)sizeof(tmp), "   %-15.15s : %s\n", ies[x].name, interp);
00388                outputf(tmp);
00389             }
00390             found++;
00391          }
00392       }
00393       if (!found) {
00394          snprintf(tmp, (int)sizeof(tmp), "   Unknown IE %03d  : Present\n", ie);
00395          outputf(tmp);
00396       }
00397       iedata += (2 + ielen);
00398       len -= (2 + ielen);
00399    }
00400    outputf("\n");
00401 }

static void dump_int ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 123 of file iax2-parser.c.

References get_unaligned_uint32().

00124 {
00125    if (len == (int)sizeof(unsigned int))
00126       snprintf(output, maxlen, "%lu", (unsigned long)ntohl(get_unaligned_uint32(value)));
00127    else
00128       ast_copy_string(output, "Invalid INT", maxlen); 
00129 }

static void dump_ipaddr ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 163 of file iax2-parser.c.

References ast_inet_ntoa().

00164 {
00165    struct sockaddr_in sin;
00166    if (len == (int)sizeof(unsigned int)) {
00167       memcpy(&sin.sin_addr, value, len);
00168       snprintf(output, maxlen, "%s", ast_inet_ntoa(sin.sin_addr));
00169    } else
00170       ast_copy_string(output, "Invalid IPADDR", maxlen);
00171 }

static void dump_prefs ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 104 of file iax2-parser.c.

References ast_codec_pref_convert(), and ast_codec_pref_string().

00105 {
00106    struct ast_codec_pref pref;
00107    int total_len = 0;
00108 
00109    maxlen--;
00110    total_len = maxlen;
00111 
00112    if (maxlen > len)
00113       maxlen = len;
00114 
00115    strncpy(output, value, maxlen);
00116    output[maxlen] = '\0';
00117    
00118    ast_codec_pref_convert(&pref, output, total_len, 0);
00119    memset(output,0,total_len);
00120    ast_codec_pref_string(&pref, output, total_len);
00121 }

static void dump_prov ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 212 of file iax2-parser.c.

References dump_prov_ies().

00213 {
00214    dump_prov_ies(output, maxlen, value, len);
00215 }

static void dump_prov_flags ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 174 of file iax2-parser.c.

References get_unaligned_uint32(), and iax_provflags2str().

00175 {
00176    char buf[256] = "";
00177    if (len == (int)sizeof(unsigned int))
00178       snprintf(output, maxlen, "%lu (%s)", (unsigned long)ntohl(get_unaligned_uint32(value)),
00179          iax_provflags2str(buf, sizeof(buf), ntohl(get_unaligned_uint32(value))));
00180    else
00181       ast_copy_string(output, "Invalid INT", maxlen);
00182 }

static void dump_prov_ies ( char *  output,
int  maxlen,
unsigned char *  iedata,
int  len 
) [static]

Definition at line 305 of file iax2-parser.c.

References iax2_ie::dump, iax2_ie::ie, name, and prov_ies.

Referenced by dump_prov().

00306 {
00307    int ielen;
00308    int ie;
00309    int x;
00310    int found;
00311    char interp[80];
00312    char tmp[256];
00313    if (len < 2)
00314       return;
00315    strcpy(output, "\n"); 
00316    maxlen -= strlen(output); output += strlen(output);
00317    while(len > 2) {
00318       ie = iedata[0];
00319       ielen = iedata[1];
00320       if (ielen + 2> len) {
00321          snprintf(tmp, (int)sizeof(tmp), "Total Prov IE length of %d bytes exceeds remaining prov frame length of %d bytes\n", ielen + 2, len);
00322          ast_copy_string(output, tmp, maxlen);
00323          maxlen -= strlen(output);
00324          output += strlen(output);
00325          return;
00326       }
00327       found = 0;
00328       for (x=0;x<(int)sizeof(prov_ies) / (int)sizeof(prov_ies[0]); x++) {
00329          if (prov_ies[x].ie == ie) {
00330             if (prov_ies[x].dump) {
00331                prov_ies[x].dump(interp, (int)sizeof(interp), iedata + 2, ielen);
00332                snprintf(tmp, (int)sizeof(tmp), "       %-15.15s : %s\n", prov_ies[x].name, interp);
00333                ast_copy_string(output, tmp, maxlen);
00334                maxlen -= strlen(output); output += strlen(output);
00335             } else {
00336                if (ielen)
00337                   snprintf(interp, (int)sizeof(interp), "%d bytes", ielen);
00338                else
00339                   strcpy(interp, "Present");
00340                snprintf(tmp, (int)sizeof(tmp), "       %-15.15s : %s\n", prov_ies[x].name, interp);
00341                ast_copy_string(output, tmp, maxlen);
00342                maxlen -= strlen(output); output += strlen(output);
00343             }
00344             found++;
00345          }
00346       }
00347       if (!found) {
00348          snprintf(tmp, (int)sizeof(tmp), "       Unknown Prov IE %03d  : Present\n", ie);
00349          ast_copy_string(output, tmp, maxlen);
00350          maxlen -= strlen(output); output += strlen(output);
00351       }
00352       iedata += (2 + ielen);
00353       len -= (2 + ielen);
00354    }
00355 }

static void dump_samprate ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 184 of file iax2-parser.c.

References IAX_RATE_11KHZ, IAX_RATE_16KHZ, IAX_RATE_22KHZ, IAX_RATE_44KHZ, IAX_RATE_48KHZ, and IAX_RATE_8KHZ.

00185 {
00186    char tmp[256]="";
00187    int sr;
00188    if (len == (int)sizeof(unsigned short)) {
00189       sr = ntohs(*((unsigned short *)value));
00190       if (sr & IAX_RATE_8KHZ)
00191          strcat(tmp, ",8khz");
00192       if (sr & IAX_RATE_11KHZ)
00193          strcat(tmp, ",11.025khz");
00194       if (sr & IAX_RATE_16KHZ)
00195          strcat(tmp, ",16khz");
00196       if (sr & IAX_RATE_22KHZ)
00197          strcat(tmp, ",22.05khz");
00198       if (sr & IAX_RATE_44KHZ)
00199          strcat(tmp, ",44.1khz");
00200       if (sr & IAX_RATE_48KHZ)
00201          strcat(tmp, ",48khz");
00202       if (strlen(tmp))
00203          ast_copy_string(output, &tmp[1], maxlen);
00204       else
00205          ast_copy_string(output, "None Specified!\n", maxlen);
00206    } else
00207       ast_copy_string(output, "Invalid SHORT", maxlen);
00208 
00209 }

static void dump_short ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 131 of file iax2-parser.c.

References get_unaligned_uint16().

00132 {
00133    if (len == (int)sizeof(unsigned short))
00134       snprintf(output, maxlen, "%d", ntohs(get_unaligned_uint16(value)));
00135    else
00136       ast_copy_string(output, "Invalid SHORT", maxlen);
00137 }

static void dump_string ( char *  output,
int  maxlen,
void *  value,
int  len 
) [static]

Definition at line 95 of file iax2-parser.c.

00096 {
00097    maxlen--;
00098    if (maxlen > len)
00099       maxlen = len;
00100    strncpy(output, value, maxlen);
00101    output[maxlen] = '\0';
00102 }

static void frame_cache_cleanup ( void *  data  )  [static]

Definition at line 1039 of file iax2-parser.c.

References AST_LIST_REMOVE_HEAD, frames, and free.

01040 {
01041    struct iax_frames *frames = data;
01042    struct iax_frame *cur;
01043 
01044    while ((cur = AST_LIST_REMOVE_HEAD(&frames->list, list)))
01045       free(cur);
01046 
01047    free(frames);
01048 }

void iax_frame_free ( struct iax_frame *  fr  ) 

Definition at line 1005 of file iax2-parser.c.

References AST_LIST_INSERT_HEAD, iax_frame::cacheable, iax_frame::direction, DIRECTION_INGRESS, DIRECTION_OUTGRESS, errorf, FRAME_CACHE_MAX_SIZE, free, and iax_frames::list.

Referenced by iax2_frame_free(), and network_thread().

01006 {
01007 #if !defined(LOW_MEMORY)
01008    struct iax_frames *iax_frames;
01009 #endif
01010 
01011    /* Note: does not remove from scheduler! */
01012    if (fr->direction == DIRECTION_INGRESS)
01013       ast_atomic_fetchadd_int(&iframes, -1);
01014    else if (fr->direction == DIRECTION_OUTGRESS)
01015       ast_atomic_fetchadd_int(&oframes, -1);
01016    else {
01017       errorf("Attempt to double free frame detected\n");
01018       return;
01019    }
01020    ast_atomic_fetchadd_int(&frames, -1);
01021 
01022 #if !defined(LOW_MEMORY)
01023    if (!fr->cacheable || !(iax_frames = ast_threadstorage_get(&frame_cache, sizeof(*iax_frames)))) {
01024       free(fr);
01025       return;
01026    }
01027 
01028    if (iax_frames->size < FRAME_CACHE_MAX_SIZE) {
01029       fr->direction = 0;
01030       AST_LIST_INSERT_HEAD(&iax_frames->list, fr, list);
01031       iax_frames->size++;
01032       return;
01033    }
01034 #endif
01035    free(fr);
01036 }

struct iax_frame* iax_frame_new ( int  direction,
int  datalen,
unsigned int  cacheable 
)

Definition at line 958 of file iax2-parser.c.

References iax_frame::afdatalen, ast_calloc, ast_calloc_cache, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, DIRECTION_INGRESS, and iax_frames::list.

Referenced by iax2_send(), and iaxfrdup2().

00959 {
00960    struct iax_frame *fr = NULL;
00961 
00962 #if !defined(LOW_MEMORY)
00963    struct iax_frames *iax_frames;
00964 
00965    /* Attempt to get a frame from this thread's cache */
00966    if ((iax_frames = ast_threadstorage_get(&frame_cache, sizeof(*iax_frames)))) {
00967       AST_LIST_TRAVERSE_SAFE_BEGIN(&iax_frames->list, fr, list) {
00968          if (fr->afdatalen >= datalen) {
00969             size_t afdatalen = fr->afdatalen;
00970             AST_LIST_REMOVE_CURRENT(&iax_frames->list, list);
00971             iax_frames->size--;
00972             memset(fr, 0, sizeof(*fr));
00973             fr->afdatalen = afdatalen;
00974             break;
00975          }
00976       }
00977       AST_LIST_TRAVERSE_SAFE_END
00978    }
00979    if (!fr) {
00980       if (!(fr = ast_calloc_cache(1, sizeof(*fr) + datalen)))
00981          return NULL;
00982       fr->afdatalen = datalen;
00983    }
00984 #else
00985    if (!(fr = ast_calloc(1, sizeof(*fr) + datalen)))
00986       return NULL;
00987    fr->afdatalen = datalen;
00988 #endif
00989 
00990 
00991    fr->direction = direction;
00992    fr->retrans = -1;
00993    fr->cacheable = cacheable;
00994    
00995    if (fr->direction == DIRECTION_INGRESS)
00996       ast_atomic_fetchadd_int(&iframes, 1);
00997    else
00998       ast_atomic_fetchadd_int(&oframes, 1);
00999    
01000    ast_atomic_fetchadd_int(&frames, 1);
01001 
01002    return fr;
01003 }

void iax_frame_wrap ( struct iax_frame *  fr,
struct ast_frame *  f 
)

Definition at line 927 of file iax2-parser.c.

References iax_frame::af, iax_frame::afdata, iax_frame::afdatalen, AST_FORMAT_SLINEAR, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), ast_swapcopy_samples(), ast_frame::data, ast_frame::datalen, ast_frame::delivery, f, ast_frame::frametype, ast_frame::len, LOG_ERROR, ast_frame::mallocd, ast_frame::offset, ast_frame::samples, ast_frame::src, and ast_frame::subclass.

Referenced by iax2_send(), iaxfrdup2(), and socket_process().

00928 {
00929    fr->af.frametype = f->frametype;
00930    fr->af.subclass = f->subclass;
00931    fr->af.mallocd = 0;           /* Our frame is static relative to the container */
00932    fr->af.datalen = f->datalen;
00933    fr->af.samples = f->samples;
00934    fr->af.offset = AST_FRIENDLY_OFFSET;
00935    fr->af.src = f->src;
00936    fr->af.delivery.tv_sec = 0;
00937    fr->af.delivery.tv_usec = 0;
00938    fr->af.data = fr->afdata;
00939    fr->af.len = f->len;
00940    if (fr->af.datalen) {
00941       size_t copy_len = fr->af.datalen;
00942       if (copy_len > fr->afdatalen) {
00943          ast_log(LOG_ERROR, "Losing frame data because destination buffer size '%d' bytes not big enough for '%d' bytes in the frame\n",
00944             (int) fr->afdatalen, (int) fr->af.datalen);
00945          copy_len = fr->afdatalen;
00946       }
00947 #if __BYTE_ORDER == __LITTLE_ENDIAN
00948       /* We need to byte-swap slinear samples from network byte order */
00949       if ((fr->af.frametype == AST_FRAME_VOICE) && (fr->af.subclass == AST_FORMAT_SLINEAR)) {
00950          /* 2 bytes / sample for SLINEAR */
00951          ast_swapcopy_samples(fr->af.data, f->data, copy_len / 2);
00952       } else
00953 #endif
00954          memcpy(fr->af.data, f->data, copy_len);
00955    }
00956 }

int iax_get_frames ( void   ) 

Definition at line 1051 of file iax2-parser.c.

Referenced by iax2_show_stats().

01051 { return frames; }

int iax_get_iframes ( void   ) 

Definition at line 1052 of file iax2-parser.c.

Referenced by iax2_show_stats().

01052 { return iframes; }

int iax_get_oframes ( void   ) 

Definition at line 1053 of file iax2-parser.c.

Referenced by iax2_show_stats().

01053 { return oframes; }

const char* iax_ie2str ( int  ie  ) 

Definition at line 294 of file iax2-parser.c.

References ies, and name.

Referenced by iax_ie_append_raw(), and iax_parse_ies().

00295 {
00296    int x;
00297    for (x=0;x<(int)sizeof(ies) / (int)sizeof(ies[0]); x++) {
00298       if (ies[x].ie == ie)
00299          return ies[x].name;
00300    }
00301    return "Unknown IE";
00302 }

int iax_ie_append ( struct iax_ie_data *  ied,
unsigned char  ie 
)

Definition at line 604 of file iax2-parser.c.

References iax_ie_append_raw().

Referenced by iax2_call(), and iax_firmware_append().

00605 {
00606    return iax_ie_append_raw(ied, ie, NULL, 0);
00607 }

int iax_ie_append_addr ( struct iax_ie_data *  ied,
unsigned char  ie,
const struct sockaddr_in *  sin 
)

Definition at line 575 of file iax2-parser.c.

References iax_ie_append_raw().

Referenced by iax2_start_transfer(), and update_registry().

00576 {
00577    return iax_ie_append_raw(ied, ie, sin, (int)sizeof(struct sockaddr_in));
00578 }

int iax_ie_append_byte ( struct iax_ie_data *  ied,
unsigned char  ie,
unsigned char  dat 
)

Definition at line 599 of file iax2-parser.c.

References iax_ie_append_raw().

Referenced by __auth_reject(), __auto_hangup(), authenticate_request(), iax2_call(), iax2_hangup(), iax_provision_build(), and socket_process().

00600 {
00601    return iax_ie_append_raw(ied, ie, &dat, 1);
00602 }

int iax_ie_append_int ( struct iax_ie_data *  ied,
unsigned char  ie,
unsigned int  value 
)

Definition at line 580 of file iax2-parser.c.

References iax_ie_append_raw().

Referenced by cache_get_callno_locked(), construct_rr(), iax2_call(), iax2_start_transfer(), iax_firmware_append(), iax_provision_build(), socket_process(), try_transfer(), and update_registry().

00581 {
00582    unsigned int newval;
00583    newval = htonl(value);
00584    return iax_ie_append_raw(ied, ie, &newval, (int)sizeof(newval));
00585 }

int iax_ie_append_raw ( struct iax_ie_data *  ied,
unsigned char  ie,
const void *  data,
int  datalen 
)

Definition at line 560 of file iax2-parser.c.

References iax_ie_data::buf, errorf, iax_ie2str(), and iax_ie_data::pos.

Referenced by iax2_provision(), iax_firmware_append(), iax_ie_append(), iax_ie_append_addr(), iax_ie_append_byte(), iax_ie_append_int(), iax_ie_append_short(), and iax_ie_append_str().

00561 {
00562    char tmp[256];
00563    if (datalen > ((int)sizeof(ied->buf) - ied->pos)) {
00564       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);
00565       errorf(tmp);
00566       return -1;
00567    }
00568    ied->buf[ied->pos++] = ie;
00569    ied->buf[ied->pos++] = datalen;
00570    memcpy(ied->buf + ied->pos, data, datalen);
00571    ied->pos += datalen;
00572    return 0;
00573 }

int iax_ie_append_short ( struct iax_ie_data *  ied,
unsigned char  ie,
unsigned short  value 
)

Definition at line 587 of file iax2-parser.c.

References iax_ie_append_raw().

Referenced by authenticate_request(), cache_get_callno_locked(), construct_rr(), dp_lookup(), iax2_call(), iax2_do_register(), iax2_start_transfer(), iax_provision_build(), registry_authrequest(), registry_rerequest(), socket_process(), and update_registry().

00588 {
00589    unsigned short newval;
00590    newval = htons(value);
00591    return iax_ie_append_raw(ied, ie, &newval, (int)sizeof(newval));
00592 }

int iax_ie_append_str ( struct iax_ie_data *  ied,
unsigned char  ie,
const char *  str 
)

Definition at line 594 of file iax2-parser.c.

References iax_ie_append_raw().

Referenced by __auth_reject(), __auto_hangup(), authenticate(), authenticate_request(), cache_get_callno_locked(), dp_lookup(), iax2_call(), iax2_do_register(), iax2_dprequest(), iax2_transfer(), iax_provision_build(), registry_authrequest(), registry_rerequest(), socket_process(), and update_registry().

00595 {
00596    return iax_ie_append_raw(ied, ie, str, strlen(str));
00597 }

int iax_parse_ies ( struct iax_ies *  ies,
unsigned char *  data,
int  datalen 
)

Definition at line 619 of file iax2-parser.c.

References errorf, get_unaligned_uint16(), get_unaligned_uint32(), iax_ie2str(), IAX_IE_ADSICPE, IAX_IE_APPARENT_ADDR, IAX_IE_AUTHMETHODS, IAX_IE_AUTOANSWER, IAX_IE_CALLED_CONTEXT, IAX_IE_CALLED_NUMBER, IAX_IE_CALLING_ANI, IAX_IE_CALLING_NAME, IAX_IE_CALLING_NUMBER, IAX_IE_CALLINGPRES, IAX_IE_CALLINGTNS, IAX_IE_CALLINGTON, IAX_IE_CALLNO, IAX_IE_CAPABILITY, IAX_IE_CAUSE, IAX_IE_CAUSECODE, IAX_IE_CHALLENGE, IAX_IE_CODEC_PREFS, IAX_IE_DATETIME, IAX_IE_DEVICETYPE, IAX_IE_DNID, IAX_IE_DPSTATUS, IAX_IE_ENCKEY, IAX_IE_ENCRYPTION, IAX_IE_FIRMWAREVER, IAX_IE_FORMAT, IAX_IE_FWBLOCKDATA, IAX_IE_FWBLOCKDESC, IAX_IE_IAX_UNKNOWN, IAX_IE_LANGUAGE, IAX_IE_MD5_RESULT, IAX_IE_MSGCOUNT, IAX_IE_MUSICONHOLD, IAX_IE_PASSWORD, IAX_IE_PROVVER, IAX_IE_RDNIS, IAX_IE_REFRESH, IAX_IE_RR_DELAY, IAX_IE_RR_DROPPED, IAX_IE_RR_JITTER, IAX_IE_RR_LOSS, IAX_IE_RR_OOO, IAX_IE_RR_PKTS, IAX_IE_RSA_RESULT, IAX_IE_SAMPLINGRATE, IAX_IE_SERVICEIDENT, IAX_IE_TRANSFERID, IAX_IE_USERNAME, IAX_IE_VERSION, IAX_RATE_8KHZ, ies, len, and outputf.

Referenced by socket_process().

00620 {
00621    /* Parse data into information elements */
00622    int len;
00623    int ie;
00624    char tmp[256];
00625    memset(ies, 0, (int)sizeof(struct iax_ies));
00626    ies->msgcount = -1;
00627    ies->firmwarever = -1;
00628    ies->calling_ton = -1;
00629    ies->calling_tns = -1;
00630    ies->calling_pres = -1;
00631    ies->samprate = IAX_RATE_8KHZ;
00632    while(datalen >= 2) {
00633       ie = data[0];
00634       len = data[1];
00635       if (len > datalen - 2) {
00636          errorf("Information element length exceeds message size\n");
00637          return -1;
00638       }
00639       switch(ie) {
00640       case IAX_IE_CALLED_NUMBER:
00641          ies->called_number = (char *)data + 2;
00642          break;
00643       case IAX_IE_CALLING_NUMBER:
00644          ies->calling_number = (char *)data + 2;
00645          break;
00646       case IAX_IE_CALLING_ANI:
00647          ies->calling_ani = (char *)data + 2;
00648          break;
00649       case IAX_IE_CALLING_NAME:
00650          ies->calling_name = (char *)data + 2;
00651          break;
00652       case IAX_IE_CALLED_CONTEXT:
00653          ies->called_context = (char *)data + 2;
00654          break;
00655       case IAX_IE_USERNAME:
00656          ies->username = (char *)data + 2;
00657          break;
00658       case IAX_IE_PASSWORD:
00659          ies->password = (char *)data + 2;
00660          break;
00661       case IAX_IE_CODEC_PREFS:
00662          ies->codec_prefs = (char *)data + 2;
00663          break;
00664       case IAX_IE_CAPABILITY:
00665          if (len != (int)sizeof(unsigned int)) {
00666             snprintf(tmp, (int)sizeof(tmp), "Expecting capability to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
00667             errorf(tmp);
00668          } else
00669             ies->capability = ntohl(get_unaligned_uint32(data + 2));
00670          break;
00671       case IAX_IE_FORMAT:
00672          if (len != (int)sizeof(unsigned int)) {
00673             snprintf(tmp, (int)sizeof(tmp), "Expecting format to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
00674             errorf(tmp);
00675          } else
00676             ies->format = ntohl(get_unaligned_uint32(data + 2));
00677          break;
00678       case IAX_IE_LANGUAGE:
00679          ies->language = (char *)data + 2;
00680          break;
00681       case IAX_IE_VERSION:
00682          if (len != (int)sizeof(unsigned short)) {
00683             snprintf(tmp, (int)sizeof(tmp),  "Expecting version to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
00684             errorf(tmp);
00685          } else
00686             ies->version = ntohs(get_unaligned_uint16(data + 2));
00687          break;
00688       case IAX_IE_ADSICPE:
00689          if (len != (int)sizeof(unsigned short)) {
00690             snprintf(tmp, (int)sizeof(tmp), "Expecting adsicpe to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
00691             errorf(tmp);
00692          } else
00693             ies->adsicpe = ntohs(get_unaligned_uint16(data + 2));
00694          break;
00695       case IAX_IE_SAMPLINGRATE:
00696          if (len != (int)sizeof(unsigned short)) {
00697             snprintf(tmp, (int)sizeof(tmp), "Expecting samplingrate to be %d bytes long but was %d\n", (int)sizeof(unsigned short), l