git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6596 65c4cc65-6c06-0410-ace0-fbb531ad65f3
833 lines
23 KiB
C
Executable file
833 lines
23 KiB
C
Executable file
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 1999 - 2005, Digium, Inc.
|
|
*
|
|
* Mark Spencer <markster@digium.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*
|
|
*
|
|
* Distributed Universal Number Discovery (DUNDi)
|
|
*
|
|
*/
|
|
|
|
#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.h"
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
#include "asterisk/frame.h"
|
|
#include "asterisk/utils.h"
|
|
#include "asterisk/dundi.h"
|
|
#include "dundi-parser.h"
|
|
#include "asterisk/dundi.h"
|
|
|
|
static void internaloutput(const char *str)
|
|
{
|
|
fputs(str, stdout);
|
|
}
|
|
|
|
static void internalerror(const char *str)
|
|
{
|
|
fprintf(stderr, "WARNING: %s", str);
|
|
}
|
|
|
|
static void (*outputf)(const char *str) = internaloutput;
|
|
static void (*errorf)(const char *str) = internalerror;
|
|
|
|
char *dundi_eid_to_str(char *s, int maxlen, dundi_eid *eid)
|
|
{
|
|
int x;
|
|
char *os = s;
|
|
if (maxlen < 18) {
|
|
if (s && (maxlen > 0))
|
|
*s = '\0';
|
|
} else {
|
|
for (x=0;x<5;x++) {
|
|
sprintf(s, "%02x:", eid->eid[x]);
|
|
s += 3;
|
|
}
|
|
sprintf(s, "%02x", eid->eid[5]);
|
|
}
|
|
return os;
|
|
}
|
|
|
|
char *dundi_eid_to_str_short(char *s, int maxlen, dundi_eid *eid)
|
|
{
|
|
int x;
|
|
char *os = s;
|
|
if (maxlen < 13) {
|
|
if (s && (maxlen > 0))
|
|
*s = '\0';
|
|
} else {
|
|
for (x=0;x<6;x++) {
|
|
sprintf(s, "%02X", eid->eid[x]);
|
|
s += 2;
|
|
}
|
|
}
|
|
return os;
|
|
}
|
|
|
|
int dundi_str_to_eid(dundi_eid *eid, char *s)
|
|
{
|
|
unsigned int eid_int[6];
|
|
int x;
|
|
if (sscanf(s, "%x:%x:%x:%x:%x:%x", &eid_int[0], &eid_int[1], &eid_int[2],
|
|
&eid_int[3], &eid_int[4], &eid_int[5]) != 6)
|
|
return -1;
|
|
for (x=0;x<6;x++)
|
|
eid->eid[x] = eid_int[x];
|
|
return 0;
|
|
}
|
|
|
|
int dundi_str_short_to_eid(dundi_eid *eid, char *s)
|
|
{
|
|
unsigned int eid_int[6];
|
|
int x;
|
|
if (sscanf(s, "%2x%2x%2x%2x%2x%2x", &eid_int[0], &eid_int[1], &eid_int[2],
|
|
&eid_int[3], &eid_int[4], &eid_int[5]) != 6)
|
|
return -1;
|
|
for (x=0;x<6;x++)
|
|
eid->eid[x] = eid_int[x];
|
|
return 0;
|
|
}
|
|
|
|
int dundi_eid_zero(dundi_eid *eid)
|
|
{
|
|
int x;
|
|
for (x=0;x<sizeof(eid->eid) / sizeof(eid->eid[0]);x++)
|
|
if (eid->eid[x]) return 0;
|
|
return 1;
|
|
}
|
|
|
|
int dundi_eid_cmp(dundi_eid *eid1, dundi_eid *eid2)
|
|
{
|
|
return memcmp(eid1, eid2, sizeof(dundi_eid));
|
|
}
|
|
|
|
static void dump_string(char *output, int maxlen, void *value, int len)
|
|
{
|
|
maxlen--;
|
|
if (maxlen > len)
|
|
maxlen = len;
|
|
strncpy(output,value, maxlen);
|
|
output[maxlen] = '\0';
|
|
}
|
|
|
|
static void dump_cbypass(char *output, int maxlen, void *value, int len)
|
|
{
|
|
maxlen--;
|
|
strncpy(output, "Bypass Caches", maxlen);
|
|
output[maxlen] = '\0';
|
|
}
|
|
|
|
static void dump_eid(char *output, int maxlen, void *value, int len)
|
|
{
|
|
if (len == 6)
|
|
dundi_eid_to_str(output, maxlen, (dundi_eid *)value);
|
|
else
|
|
snprintf(output, maxlen, "Invalid EID len %d", len);
|
|
}
|
|
|
|
char *dundi_hint2str(char *buf, int bufsiz, int flags)
|
|
{
|
|
strcpy(buf, "");
|
|
buf[bufsiz-1] = '\0';
|
|
if (flags & DUNDI_HINT_TTL_EXPIRED) {
|
|
strncat(buf, "TTLEXPIRED|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_HINT_DONT_ASK) {
|
|
strncat(buf, "DONTASK|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_HINT_UNAFFECTED) {
|
|
strncat(buf, "UNAFFECTED|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
/* Get rid of trailing | */
|
|
if (ast_strlen_zero(buf))
|
|
strcpy(buf, "NONE|");
|
|
buf[strlen(buf)-1] = '\0';
|
|
return buf;
|
|
}
|
|
|
|
static void dump_hint(char *output, int maxlen, void *value, int len)
|
|
{
|
|
unsigned short flags;
|
|
char tmp[512];
|
|
char tmp2[256];
|
|
if (len < 2) {
|
|
strncpy(output, "<invalid contents>", maxlen);
|
|
return;
|
|
}
|
|
memcpy(&flags, value, sizeof(flags));
|
|
flags = ntohs(flags);
|
|
memset(tmp, 0, sizeof(tmp));
|
|
dundi_hint2str(tmp2, sizeof(tmp2), flags);
|
|
snprintf(tmp, sizeof(tmp), "[%s] ", tmp2);
|
|
memcpy(tmp + strlen(tmp), value + 2, len - 2);
|
|
strncpy(output, tmp, maxlen - 1);
|
|
}
|
|
|
|
static void dump_cause(char *output, int maxlen, void *value, int len)
|
|
{
|
|
static char *causes[] = {
|
|
"SUCCESS",
|
|
"GENERAL",
|
|
"DYNAMIC",
|
|
"NOAUTH" ,
|
|
};
|
|
char tmp[256];
|
|
char tmp2[256];
|
|
int mlen;
|
|
unsigned char cause;
|
|
if (len < 1) {
|
|
strncpy(output, "<invalid contents>", maxlen);
|
|
return;
|
|
}
|
|
cause = *((unsigned char *)value);
|
|
memset(tmp2, 0, sizeof(tmp2));
|
|
mlen = len - 1;
|
|
if (mlen > 255)
|
|
mlen = 255;
|
|
memcpy(tmp2, value + 1, mlen);
|
|
if (cause < sizeof(causes) / sizeof(causes[0])) {
|
|
if (len > 1)
|
|
snprintf(tmp, sizeof(tmp), "%s: %s", causes[cause], tmp2);
|
|
else
|
|
snprintf(tmp, sizeof(tmp), "%s", causes[cause]);
|
|
} else {
|
|
if (len > 1)
|
|
snprintf(tmp, sizeof(tmp), "%d: %s", cause, tmp2);
|
|
else
|
|
snprintf(tmp, sizeof(tmp), "%d", cause);
|
|
}
|
|
|
|
strncpy(output,tmp, maxlen);
|
|
output[maxlen] = '\0';
|
|
}
|
|
|
|
static void dump_int(char *output, int maxlen, void *value, int len)
|
|
{
|
|
if (len == (int)sizeof(unsigned int))
|
|
snprintf(output, maxlen, "%lu", (unsigned long)ntohl(*((unsigned int *)value)));
|
|
else
|
|
snprintf(output, maxlen, "Invalid INT");
|
|
}
|
|
|
|
static void dump_short(char *output, int maxlen, void *value, int len)
|
|
{
|
|
if (len == (int)sizeof(unsigned short))
|
|
snprintf(output, maxlen, "%d", ntohs(*((unsigned short *)value)));
|
|
else
|
|
snprintf(output, maxlen, "Invalid SHORT");
|
|
}
|
|
|
|
static void dump_byte(char *output, int maxlen, void *value, int len)
|
|
{
|
|
if (len == (int)sizeof(unsigned char))
|
|
snprintf(output, maxlen, "%d", *((unsigned char *)value));
|
|
else
|
|
snprintf(output, maxlen, "Invalid BYTE");
|
|
}
|
|
|
|
static char *proto2str(int proto, char *buf, int bufsiz)
|
|
{
|
|
switch(proto) {
|
|
case DUNDI_PROTO_NONE:
|
|
strncpy(buf, "None", bufsiz - 1);
|
|
break;
|
|
case DUNDI_PROTO_IAX:
|
|
strncpy(buf, "IAX", bufsiz - 1);
|
|
break;
|
|
case DUNDI_PROTO_SIP:
|
|
strncpy(buf, "SIP", bufsiz - 1);
|
|
break;
|
|
case DUNDI_PROTO_H323:
|
|
strncpy(buf, "H.323", bufsiz - 1);
|
|
break;
|
|
default:
|
|
snprintf(buf, bufsiz, "Unknown Proto(%d)", proto);
|
|
}
|
|
buf[bufsiz-1] = '\0';
|
|
return buf;
|
|
}
|
|
|
|
char *dundi_flags2str(char *buf, int bufsiz, int flags)
|
|
{
|
|
strcpy(buf, "");
|
|
buf[bufsiz-1] = '\0';
|
|
if (flags & DUNDI_FLAG_EXISTS) {
|
|
strncat(buf, "EXISTS|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_FLAG_MATCHMORE) {
|
|
strncat(buf, "MATCHMORE|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_FLAG_CANMATCH) {
|
|
strncat(buf, "CANMATCH|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_FLAG_IGNOREPAT) {
|
|
strncat(buf, "IGNOREPAT|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_FLAG_RESIDENTIAL) {
|
|
strncat(buf, "RESIDENCE|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_FLAG_COMMERCIAL) {
|
|
strncat(buf, "COMMERCIAL|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_FLAG_MOBILE) {
|
|
strncat(buf, "MOBILE", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_FLAG_NOUNSOLICITED) {
|
|
strncat(buf, "NOUNSLCTD|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
if (flags & DUNDI_FLAG_NOCOMUNSOLICIT) {
|
|
strncat(buf, "NOCOMUNSLTD|", bufsiz - strlen(buf) - 1);
|
|
}
|
|
/* Get rid of trailing | */
|
|
if (ast_strlen_zero(buf))
|
|
strcpy(buf, "NONE|");
|
|
buf[strlen(buf)-1] = '\0';
|
|
return buf;
|
|
}
|
|
|
|
static void dump_answer(char *output, int maxlen, void *value, int len)
|
|
{
|
|
struct dundi_answer *answer;
|
|
char proto[40];
|
|
char flags[40];
|
|
char eid_str[40];
|
|
char tmp[512]="";
|
|
if (len >= 10) {
|
|
answer = (struct dundi_answer *)(value);
|
|
memcpy(tmp, answer->data, (len >= 500) ? 500 : len - 10);
|
|
dundi_eid_to_str(eid_str, sizeof(eid_str), &answer->eid);
|
|
snprintf(output, maxlen, "[%s] %d <%s/%s> from [%s]",
|
|
dundi_flags2str(flags, sizeof(flags), ntohs(answer->flags)),
|
|
ntohs(answer->weight),
|
|
proto2str(answer->protocol, proto, sizeof(proto)),
|
|
tmp, eid_str);
|
|
} else
|
|
strncpy(output, "Invalid Answer", maxlen - 1);
|
|
}
|
|
|
|
static void dump_encrypted(char *output, int maxlen, void *value, int len)
|
|
{
|
|
char iv[33];
|
|
int x;
|
|
if ((len > 16) && !(len % 16)) {
|
|
/* Build up IV */
|
|
for (x=0;x<16;x++) {
|
|
snprintf(iv + (x << 1), 3, "%02x", ((unsigned char *)value)[x]);
|
|
}
|
|
snprintf(output, maxlen, "[IV %s] %d encrypted blocks\n", iv, len / 16);
|
|
} else
|
|
snprintf(output, maxlen, "Invalid Encrypted Datalen %d", len);
|
|
}
|
|
|
|
static void dump_raw(char *output, int maxlen, void *value, int len)
|
|
{
|
|
int x;
|
|
unsigned char *u = value;
|
|
output[maxlen - 1] = '\0';
|
|
strcpy(output, "[ ");
|
|
for (x=0;x<len;x++) {
|
|
snprintf(output + strlen(output), maxlen - strlen(output) - 1, "%02x ", u[x]);
|
|
}
|
|
strncat(output + strlen(output), "]", maxlen - strlen(output) - 1);
|
|
}
|
|
|
|
static struct dundi_ie {
|
|
int ie;
|
|
char *name;
|
|
void (*dump)(char *output, int maxlen, void *value, int len);
|
|
} ies[] = {
|
|
{ DUNDI_IE_EID, "ENTITY IDENT", dump_eid },
|
|
{ DUNDI_IE_CALLED_CONTEXT, "CALLED CONTEXT", dump_string },
|
|
{ DUNDI_IE_CALLED_NUMBER, "CALLED NUMBER", dump_string },
|
|
{ DUNDI_IE_EID_DIRECT, "DIRECT EID", dump_eid },
|
|
{ DUNDI_IE_ANSWER, "ANSWER", dump_answer },
|
|
{ DUNDI_IE_TTL, "TTL", dump_short },
|
|
{ DUNDI_IE_VERSION, "VERSION", dump_short },
|
|
{ DUNDI_IE_EXPIRATION, "EXPIRATION", dump_short },
|
|
{ DUNDI_IE_UNKNOWN, "UKWN DUNDI CMD", dump_byte },
|
|
{ DUNDI_IE_CAUSE, "CAUSE", dump_cause },
|
|
{ DUNDI_IE_REQEID, "REQUEST EID", dump_eid },
|
|
{ DUNDI_IE_ENCDATA, "ENCDATA", dump_encrypted },
|
|
{ DUNDI_IE_SHAREDKEY, "SHAREDKEY", dump_raw },
|
|
{ DUNDI_IE_SIGNATURE, "SIGNATURE", dump_raw },
|
|
{ DUNDI_IE_KEYCRC32, "KEYCRC32", dump_int },
|
|
{ DUNDI_IE_HINT, "HINT", dump_hint },
|
|
{ DUNDI_IE_DEPARTMENT, "DEPARTMENT", dump_string },
|
|
{ DUNDI_IE_ORGANIZATION, "ORGANIZTN", dump_string },
|
|
{ DUNDI_IE_LOCALITY, "LOCALITY", dump_string },
|
|
{ DUNDI_IE_STATE_PROV, "STATEPROV", dump_string },
|
|
{ DUNDI_IE_COUNTRY, "COUNTRY", dump_string },
|
|
{ DUNDI_IE_EMAIL, "EMAIL", dump_string },
|
|
{ DUNDI_IE_PHONE, "PHONE", dump_string },
|
|
{ DUNDI_IE_IPADDR, "ADDRESS", dump_string },
|
|
{ DUNDI_IE_CACHEBYPASS, "CBYPASS", dump_cbypass },
|
|
};
|
|
|
|
const char *dundi_ie2str(int ie)
|
|
{
|
|
int x;
|
|
for (x=0;x<(int)sizeof(ies) / (int)sizeof(ies[0]); x++) {
|
|
if (ies[x].ie == ie)
|
|
return ies[x].name;
|
|
}
|
|
return "Unknown IE";
|
|
}
|
|
|
|
static void dump_ies(unsigned char *iedata, int spaces, int len)
|
|
{
|
|
int ielen;
|
|
int ie;
|
|
int x;
|
|
int found;
|
|
char interp[1024];
|
|
char tmp[1024];
|
|
if (len < 2)
|
|
return;
|
|
while(len >= 2) {
|
|
ie = iedata[0];
|
|
ielen = iedata[1];
|
|
/* Encrypted data is the remainder */
|
|
if (ie == DUNDI_IE_ENCDATA)
|
|
ielen = len - 2;
|
|
if (ielen + 2> len) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Total IE length of %d bytes exceeds remaining frame length of %d bytes\n", ielen + 2, len);
|
|
outputf(tmp);
|
|
return;
|
|
}
|
|
found = 0;
|
|
for (x=0;x<(int)sizeof(ies) / (int)sizeof(ies[0]); x++) {
|
|
if (ies[x].ie == ie) {
|
|
if (ies[x].dump) {
|
|
ies[x].dump(interp, (int)sizeof(interp), iedata + 2, ielen);
|
|
snprintf(tmp, (int)sizeof(tmp), " %s%-15.15s : %s\n", (spaces ? " " : "" ), ies[x].name, interp);
|
|
outputf(tmp);
|
|
} else {
|
|
if (ielen)
|
|
snprintf(interp, (int)sizeof(interp), "%d bytes", ielen);
|
|
else
|
|
strcpy(interp, "Present");
|
|
snprintf(tmp, (int)sizeof(tmp), " %s%-15.15s : %s\n", (spaces ? " " : "" ), ies[x].name, interp);
|
|
outputf(tmp);
|
|
}
|
|
found++;
|
|
}
|
|
}
|
|
if (!found) {
|
|
snprintf(tmp, (int)sizeof(tmp), " %sUnknown IE %03d : Present\n", (spaces ? " " : "" ), ie);
|
|
outputf(tmp);
|
|
}
|
|
iedata += (2 + ielen);
|
|
len -= (2 + ielen);
|
|
}
|
|
outputf("\n");
|
|
}
|
|
|
|
void dundi_showframe(struct dundi_hdr *fhi, int rx, struct sockaddr_in *sin, int datalen)
|
|
{
|
|
char *pref[] = {
|
|
"Tx",
|
|
"Rx",
|
|
" ETx",
|
|
" Erx" };
|
|
char *commands[] = {
|
|
"ACK ",
|
|
"DPDISCOVER ",
|
|
"DPRESPONSE ",
|
|
"EIDQUERY ",
|
|
"EIDRESPONSE ",
|
|
"PRECACHERQ ",
|
|
"PRECACHERP ",
|
|
"INVALID ",
|
|
"UNKNOWN CMD ",
|
|
"NULL ",
|
|
"REQREQ ",
|
|
"REGRESPONSE ",
|
|
"CANCEL ",
|
|
"ENCRYPT ",
|
|
"ENCREJ " };
|
|
char class2[20];
|
|
char *class;
|
|
char subclass2[20];
|
|
char *subclass;
|
|
char tmp[256];
|
|
char retries[20];
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
if (ntohs(fhi->dtrans) & DUNDI_FLAG_RETRANS)
|
|
strcpy(retries, "Yes");
|
|
else
|
|
strcpy(retries, "No");
|
|
if ((ntohs(fhi->strans) & DUNDI_FLAG_RESERVED)) {
|
|
/* Ignore frames with high bit set to 1 */
|
|
return;
|
|
}
|
|
if ((fhi->cmdresp & 0x3f) > (int)sizeof(commands)/(int)sizeof(char *)) {
|
|
snprintf(class2, (int)sizeof(class2), "(%d?)", fhi->cmdresp);
|
|
class = class2;
|
|
} else {
|
|
class = commands[(int)(fhi->cmdresp & 0x3f)];
|
|
}
|
|
snprintf(subclass2, (int)sizeof(subclass2), "%02x", fhi->cmdflags);
|
|
subclass = subclass2;
|
|
snprintf(tmp, (int)sizeof(tmp),
|
|
"%s-Frame Retry[%s] -- OSeqno: %3.3d ISeqno: %3.3d Type: %s (%s)\n",
|
|
pref[rx],
|
|
retries, fhi->oseqno, fhi->iseqno, class, fhi->cmdresp & 0x40 ? "Response" : "Command");
|
|
outputf(tmp);
|
|
snprintf(tmp, (int)sizeof(tmp),
|
|
"%s Flags: %s STrans: %5.5d DTrans: %5.5d [%s:%d]%s\n", (rx > 1) ? " " : "",
|
|
subclass, ntohs(fhi->strans) & ~DUNDI_FLAG_RESERVED, ntohs(fhi->dtrans) & ~DUNDI_FLAG_RETRANS,
|
|
ast_inet_ntoa(iabuf, sizeof(iabuf), sin->sin_addr), ntohs(sin->sin_port),
|
|
fhi->cmdresp & 0x80 ? " (Final)" : "");
|
|
outputf(tmp);
|
|
dump_ies(fhi->ies, rx > 1, datalen);
|
|
}
|
|
|
|
int dundi_ie_append_raw(struct dundi_ie_data *ied, unsigned char ie, 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", dundi_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 dundi_ie_append_cause(struct dundi_ie_data *ied, unsigned char ie, unsigned char cause, char *data)
|
|
{
|
|
char tmp[256];
|
|
int datalen = data ? strlen(data) + 1 : 1;
|
|
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", dundi_ie2str(ie), ie, datalen, (int)sizeof(ied->buf) - ied->pos);
|
|
errorf(tmp);
|
|
return -1;
|
|
}
|
|
ied->buf[ied->pos++] = ie;
|
|
ied->buf[ied->pos++] = datalen;
|
|
ied->buf[ied->pos++] = cause;
|
|
memcpy(ied->buf + ied->pos, data, datalen-1);
|
|
ied->pos += datalen-1;
|
|
return 0;
|
|
}
|
|
|
|
int dundi_ie_append_hint(struct dundi_ie_data *ied, unsigned char ie, unsigned short flags, char *data)
|
|
{
|
|
char tmp[256];
|
|
int datalen = data ? strlen(data) + 2 : 2;
|
|
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", dundi_ie2str(ie), ie, datalen, (int)sizeof(ied->buf) - ied->pos);
|
|
errorf(tmp);
|
|
return -1;
|
|
}
|
|
ied->buf[ied->pos++] = ie;
|
|
ied->buf[ied->pos++] = datalen;
|
|
flags = htons(flags);
|
|
memcpy(ied->buf + ied->pos, &flags, sizeof(flags));
|
|
ied->pos += 2;
|
|
memcpy(ied->buf + ied->pos, data, datalen-1);
|
|
ied->pos += datalen-2;
|
|
return 0;
|
|
}
|
|
|
|
int dundi_ie_append_encdata(struct dundi_ie_data *ied, unsigned char ie, unsigned char *iv, void *data, int datalen)
|
|
{
|
|
char tmp[256];
|
|
datalen += 16;
|
|
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", dundi_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, iv, 16);
|
|
ied->pos += 16;
|
|
if (data) {
|
|
memcpy(ied->buf + ied->pos, data, datalen-16);
|
|
ied->pos += datalen-16;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int dundi_ie_append_answer(struct dundi_ie_data *ied, unsigned char ie, dundi_eid *eid, unsigned char protocol, unsigned short flags, unsigned short weight, char *data)
|
|
{
|
|
char tmp[256];
|
|
int datalen = data ? strlen(data) + 11 : 11;
|
|
int x;
|
|
unsigned short myw;
|
|
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", dundi_ie2str(ie), ie, datalen, (int)sizeof(ied->buf) - ied->pos);
|
|
errorf(tmp);
|
|
return -1;
|
|
}
|
|
ied->buf[ied->pos++] = ie;
|
|
ied->buf[ied->pos++] = datalen;
|
|
for (x=0;x<6;x++)
|
|
ied->buf[ied->pos++] = eid->eid[x];
|
|
ied->buf[ied->pos++] = protocol;
|
|
myw = htons(flags);
|
|
memcpy(ied->buf + ied->pos, &myw, 2);
|
|
ied->pos += 2;
|
|
myw = htons(weight);
|
|
memcpy(ied->buf + ied->pos, &myw, 2);
|
|
ied->pos += 2;
|
|
memcpy(ied->buf + ied->pos, data, datalen-11);
|
|
ied->pos += datalen-11;
|
|
return 0;
|
|
}
|
|
|
|
int dundi_ie_append_addr(struct dundi_ie_data *ied, unsigned char ie, struct sockaddr_in *sin)
|
|
{
|
|
return dundi_ie_append_raw(ied, ie, sin, (int)sizeof(struct sockaddr_in));
|
|
}
|
|
|
|
int dundi_ie_append_int(struct dundi_ie_data *ied, unsigned char ie, unsigned int value)
|
|
{
|
|
unsigned int newval;
|
|
newval = htonl(value);
|
|
return dundi_ie_append_raw(ied, ie, &newval, (int)sizeof(newval));
|
|
}
|
|
|
|
int dundi_ie_append_short(struct dundi_ie_data *ied, unsigned char ie, unsigned short value)
|
|
{
|
|
unsigned short newval;
|
|
newval = htons(value);
|
|
return dundi_ie_append_raw(ied, ie, &newval, (int)sizeof(newval));
|
|
}
|
|
|
|
int dundi_ie_append_str(struct dundi_ie_data *ied, unsigned char ie, char *str)
|
|
{
|
|
return dundi_ie_append_raw(ied, ie, str, strlen(str));
|
|
}
|
|
|
|
int dundi_ie_append_eid(struct dundi_ie_data *ied, unsigned char ie, dundi_eid *eid)
|
|
{
|
|
return dundi_ie_append_raw(ied, ie, (unsigned char *)eid, sizeof(dundi_eid));
|
|
}
|
|
|
|
int dundi_ie_append_byte(struct dundi_ie_data *ied, unsigned char ie, unsigned char dat)
|
|
{
|
|
return dundi_ie_append_raw(ied, ie, &dat, 1);
|
|
}
|
|
|
|
int dundi_ie_append(struct dundi_ie_data *ied, unsigned char ie)
|
|
{
|
|
return dundi_ie_append_raw(ied, ie, NULL, 0);
|
|
}
|
|
|
|
void dundi_set_output(void (*func)(const char *))
|
|
{
|
|
outputf = func;
|
|
}
|
|
|
|
void dundi_set_error(void (*func)(const char *))
|
|
{
|
|
errorf = func;
|
|
}
|
|
|
|
int dundi_parse_ies(struct dundi_ies *ies, unsigned char *data, int datalen)
|
|
{
|
|
/* Parse data into information elements */
|
|
int len;
|
|
int ie;
|
|
char tmp[256];
|
|
memset(ies, 0, (int)sizeof(struct dundi_ies));
|
|
ies->ttl = -1;
|
|
ies->expiration = -1;
|
|
ies->unknowncmd = -1;
|
|
ies->cause = -1;
|
|
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 DUNDI_IE_EID:
|
|
case DUNDI_IE_EID_DIRECT:
|
|
if (len != (int)sizeof(dundi_eid)) {
|
|
errorf("Improper entity identifer, expecting 6 bytes!\n");
|
|
} else if (ies->eidcount < DUNDI_MAX_STACK) {
|
|
ies->eids[ies->eidcount] = (dundi_eid *)(data + 2);
|
|
ies->eid_direct[ies->eidcount] = (ie == DUNDI_IE_EID_DIRECT);
|
|
ies->eidcount++;
|
|
} else
|
|
errorf("Too many entities in stack!\n");
|
|
break;
|
|
case DUNDI_IE_REQEID:
|
|
if (len != (int)sizeof(dundi_eid)) {
|
|
errorf("Improper requested entity identifer, expecting 6 bytes!\n");
|
|
} else
|
|
ies->reqeid = (dundi_eid *)(data + 2);
|
|
break;
|
|
case DUNDI_IE_CALLED_CONTEXT:
|
|
ies->called_context = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_CALLED_NUMBER:
|
|
ies->called_number = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_ANSWER:
|
|
if (len < sizeof(struct dundi_answer)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Answer expected to be >=%d bytes long but was %d\n", (int)sizeof(struct dundi_answer), len);
|
|
errorf(tmp);
|
|
} else {
|
|
if (ies->anscount < DUNDI_MAX_ANSWERS)
|
|
ies->answers[ies->anscount++]= (struct dundi_answer *)(data + 2);
|
|
else
|
|
errorf("Ignoring extra answers!\n");
|
|
}
|
|
break;
|
|
case DUNDI_IE_TTL:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting ttl to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->ttl = ntohs(*((unsigned short *)(data + 2)));
|
|
break;
|
|
case DUNDI_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(*((unsigned short *)(data + 2)));
|
|
break;
|
|
case DUNDI_IE_EXPIRATION:
|
|
if (len != (int)sizeof(unsigned short)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting expiration to be %d bytes long but was %d\n", (int)sizeof(unsigned short), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->expiration = ntohs(*((unsigned short *)(data + 2)));
|
|
break;
|
|
case DUNDI_IE_KEYCRC32:
|
|
if (len != (int)sizeof(unsigned int)) {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expecting expiration to be %d bytes long but was %d\n", (int)sizeof(unsigned int), len);
|
|
errorf(tmp);
|
|
} else
|
|
ies->keycrc32 = ntohl(*((unsigned int *)(data + 2)));
|
|
break;
|
|
case DUNDI_IE_UNKNOWN:
|
|
if (len == 1)
|
|
ies->unknowncmd = data[2];
|
|
else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected single byte Unknown command, but was %d long\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case DUNDI_IE_CAUSE:
|
|
if (len >= 1) {
|
|
ies->cause = data[2];
|
|
ies->causestr = (char *)data + 3;
|
|
} else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected at least one byte cause, but was %d long\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case DUNDI_IE_HINT:
|
|
if (len >= 2) {
|
|
ies->hint = (struct dundi_hint *)(data + 2);
|
|
} else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Expected at least two byte hint, but was %d long\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case DUNDI_IE_DEPARTMENT:
|
|
ies->q_dept = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_ORGANIZATION:
|
|
ies->q_org = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_LOCALITY:
|
|
ies->q_locality = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_STATE_PROV:
|
|
ies->q_stateprov = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_COUNTRY:
|
|
ies->q_country = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_EMAIL:
|
|
ies->q_email = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_PHONE:
|
|
ies->q_phone = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_IPADDR:
|
|
ies->q_ipaddr = (char *)data + 2;
|
|
break;
|
|
case DUNDI_IE_ENCDATA:
|
|
/* Recalculate len as the remainder of the message, regardless of
|
|
theoretical length */
|
|
len = datalen - 2;
|
|
if ((len > 16) && !(len % 16)) {
|
|
ies->encblock = (struct dundi_encblock *)(data + 2);
|
|
ies->enclen = len - 16;
|
|
} else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Invalid encrypted data length %d\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case DUNDI_IE_SHAREDKEY:
|
|
if (len == 128) {
|
|
ies->encsharedkey = (unsigned char *)(data + 2);
|
|
} else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Invalid encrypted shared key length %d\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case DUNDI_IE_SIGNATURE:
|
|
if (len == 128) {
|
|
ies->encsig = (unsigned char *)(data + 2);
|
|
} else {
|
|
snprintf(tmp, (int)sizeof(tmp), "Invalid encrypted signature length %d\n", len);
|
|
errorf(tmp);
|
|
}
|
|
break;
|
|
case DUNDI_IE_CACHEBYPASS:
|
|
ies->cbypass = 1;
|
|
break;
|
|
default:
|
|
snprintf(tmp, (int)sizeof(tmp), "Ignoring unknown information element '%s' (%d) of length %d\n", dundi_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;
|
|
}
|