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Merge tilghman's updates for getourip

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@958 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2003-05-04 05:52:52 +00:00
parent b7e5181f8e
commit 01a79e3adc
4 changed files with 123 additions and 191 deletions
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106
channels/chan_sip.c
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@@ -35,6 +35,7 @@
#include <asterisk/musiconhold.h>
#include <asterisk/dsp.h>
#include <asterisk/parking.h>
#include <asterisk/acl.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
@@ -844,94 +845,6 @@ static void sip_destroy(struct sip_pvt *p)
ast_pthread_mutex_unlock(&iflock);
}
/* Interface lookup code courtesy Tilghman of DrunkCoder.com. Thanks! */
struct my_ifreq {
char ifrn_name[IFNAMSIZ]; /* Interface name, e.g. "en0". */
struct sockaddr_in ifru_addr;
};
static struct in_addr *lookup_iface(char *iface) {
int mysock;
int res;
static struct my_ifreq ifreq;
memset(&ifreq, 0, sizeof(ifreq));
strncpy(ifreq.ifrn_name,iface,sizeof(ifreq.ifrn_name) - 1);
mysock = socket(PF_INET,SOCK_DGRAM,IPPROTO_IP);
res = ioctl(mysock,SIOCGIFADDR,&ifreq);
close(mysock);
if (res < 0) {
ast_log(LOG_WARNING, "Unable to get IP of %s: %s\n", iface, strerror(errno));
return &__ourip;
}
return( (struct in_addr *) &ifreq.ifru_addr.sin_addr );
}
static struct in_addr *myaddrfor(struct in_addr *them)
{
FILE *PROC;
struct in_addr *temp = NULL;
unsigned int remote_ip;
char line[256];
remote_ip = them->s_addr;
PROC = fopen("/proc/net/route","r");
if (!PROC) {
/* If /proc/net/route doesn't exist, fall back to the old method */
return &__ourip;
}
/* First line contains headers */
fgets(line,sizeof(line),PROC);
while (!feof(PROC)) {
char iface[8];
unsigned int dest, gateway, mask;
int i,aoffset;
char *fields[40];
fgets(line,sizeof(line),PROC);
aoffset = 0;
for (i=0;i<sizeof(line);i++) {
char *boffset;
fields[aoffset++] = line + i;
boffset = strchr(line + i,'\t');
if (boffset == NULL) {
/* Exit loop */
break;
} else {
*boffset = '\0';
i = boffset - line;
}
}
sscanf(fields[0],"%s",iface);
sscanf(fields[1],"%x",&dest);
sscanf(fields[2],"%x",&gateway);
sscanf(fields[7],"%x",&mask);
#if 0
printf("Addr: %s %08x Dest: %08x Mask: %08x\n", inet_ntoa(*them), remote_ip, dest, mask);
#endif
if (((remote_ip & mask) ^ dest) == 0) {
if (sipdebug)
ast_verbose("Interface is %s\n",iface);
temp = lookup_iface(iface);
if (sipdebug)
ast_verbose("IP Address is %s\n",inet_ntoa(*temp));
break;
}
}
fclose(PROC);
if (!temp) {
ast_log(LOG_WARNING, "Couldn't figure out how to get to %s. Using default\n", inet_ntoa(*them));
temp = &__ourip;
}
return temp;
}
static int transmit_response_reliable(struct sip_pvt *p, char *msg, struct sip_request *req);
@@ -1363,10 +1276,12 @@ static struct sip_pvt *sip_alloc(char *callid, struct sockaddr_in *sin, int useg
#endif
if (sin) {
memcpy(&p->sa, sin, sizeof(p->sa));
memcpy(&p->ourip, myaddrfor(&p->sa.sin_addr), sizeof(p->ourip));
if (ast_ouraddrfor(&p->sa.sin_addr,&p->ourip))
memcpy(&p->ourip, &__ourip, sizeof(p->ourip));
} else {
memcpy(&p->ourip, &__ourip, sizeof(p->ourip));
}
/* z9hG4bK is a magic cookie. See RFC 3261 section 8.1.1.7 */
snprintf(p->via, sizeof(p->via), "SIP/2.0/UDP %s:%d;branch=z9hG4bK%08x", inet_ntoa(p->ourip), ourport, p->branch);
if (!callid)
build_callid(p->callid, sizeof(p->callid), p->ourip);
@@ -2668,6 +2583,7 @@ static int transmit_register(struct sip_registry *r, char *cmd, char *auth)
snprintf(tmp, sizeof(tmp), "%u %s", ++r->ocseq, cmd);
p->ocseq = r->ocseq;
/* z9hG4bK is a magic cookie. See RFC 3261 section 8.1.1.7 */
snprintf(via, sizeof(via), "SIP/2.0/UDP %s:%d;branch=z9hG4bK%08x", inet_ntoa(p->ourip), ourport, p->branch);
add_header(&req, "Via", via);
add_header(&req, "From", from);
@@ -4595,7 +4511,9 @@ static int sip_send_mwi_to_peer(struct sip_peer *peer)
return 0;
}
/* Recalculate our side, and recalculate Call ID */
memcpy(&p->ourip, myaddrfor(&p->sa.sin_addr), sizeof(p->ourip));
if (ast_ouraddrfor(&p->sa.sin_addr,&p->ourip))
memcpy(&p->ourip, &__ourip, sizeof(p->ourip));
/* z9hG4bK is a magic cookie. See RFC 3261 section 8.1.1.7 */
snprintf(p->via, sizeof(p->via), "SIP/2.0/UDP %s:%d;branch=z9hG4bK%08x", inet_ntoa(p->ourip), ourport, p->branch);
build_callid(p->callid, sizeof(p->callid), p->ourip);
/* Send MWI */
@@ -4746,7 +4664,9 @@ static int sip_poke_peer(struct sip_peer *peer)
snprintf(p->tohost, sizeof(p->tohost), "%s", inet_ntoa(peer->addr.sin_addr));
/* Recalculate our side, and recalculate Call ID */
memcpy(&p->ourip, myaddrfor(&p->sa.sin_addr), sizeof(p->ourip));
if (ast_ouraddrfor(&p->sa.sin_addr,&p->ourip))
memcpy(&p->ourip, &__ourip, sizeof(p->ourip));
/* z9hG4bK is a magic cookie. See RFC 3261 section 8.1.1.7 */
snprintf(p->via, sizeof(p->via), "SIP/2.0/UDP %s:%d;branch=z9hG4bK%08x", inet_ntoa(p->ourip), ourport, p->branch);
build_callid(p->callid, sizeof(p->callid), p->ourip);
@@ -4855,7 +4775,9 @@ static struct ast_channel *sip_request(char *type, int format, void *data)
if (!strlen(p->peername) && ext)
strncpy(p->peername, ext, sizeof(p->peername) - 1);
/* Recalculate our side, and recalculate Call ID */
memcpy(&p->ourip, myaddrfor(&p->sa.sin_addr), sizeof(p->ourip));
if (ast_ouraddrfor(&p->sa.sin_addr,&p->ourip))
memcpy(&p->ourip, &__ourip, sizeof(p->ourip));
/* z9hG4bK is a magic cookie. See RFC 3261 section 8.1.1.7 */
snprintf(p->via, sizeof(p->via), "SIP/2.0/UDP %s:%d;branch=z9hG4bK%08x", inet_ntoa(p->ourip), ourport, p->branch);
build_callid(p->callid, sizeof(p->callid), p->ourip);
if (ext)