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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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103
channels/chan_mgcp.c
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@@ -278,103 +278,6 @@ static int mgcp_call(struct ast_channel *ast, char *dest, int timeout)
return res;
}
/* Interface lookup code courtesy Tilghman of DrunkCoder.com. Thanks! */
struct my_ifreq {
union
{
char ifrn_name[IFNAMSIZ]; /* Interface name, e.g. "en0". */
} ifr_ifrn;
union
{
struct sockaddr_in ifru_addr;
char ifru_data[512];
} ifr_ifru;
};
static struct in_addr *lookup_iface(char *iface) {
int mysock;
int res;
static struct my_ifreq ifreq;
strncpy(ifreq.ifr_ifrn.ifrn_name,iface,sizeof(ifreq.ifr_ifrn.ifrn_name));
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.ifr_ifru.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 (mgcpdebug)
ast_verbose("Interface is %s\n",iface);
temp = lookup_iface(iface);
if (mgcpdebug)
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 mgcp_hangup(struct ast_channel *ast)
{
struct mgcp_endpoint *p = ast->pvt->pvt;
@@ -808,7 +711,8 @@ static struct mgcp_endpoint *find_endpoint(char *name, int msgid, struct sockadd
if ((g->addr.sin_addr.s_addr != sin->sin_addr.s_addr) ||
(g->addr.sin_port != sin->sin_port)) {
memcpy(&g->addr, sin, sizeof(g->addr));
memcpy(&g->ourip, myaddrfor(&g->addr.sin_addr), sizeof(g->ourip));
if (ast_ouraddrfor(&g->addr.sin_addr, &g->ourip))
memcpy(&g->ourip, &__ourip, sizeof(g->ourip));
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Registered MGCP gateway '%s' at %s port %d\n", g->name, inet_ntoa(g->addr.sin_addr), ntohs(g->addr.sin_port));
}
@@ -1793,7 +1697,8 @@ static struct mgcp_gateway *build_gateway(char *cat, struct ast_variable *v)
if (gw->addr.sin_addr.s_addr && !ntohs(gw->addr.sin_port))
gw->addr.sin_port = htons(DEFAULT_MGCP_PORT);
if (gw->addr.sin_addr.s_addr)
memcpy(&gw->ourip, myaddrfor(&gw->addr.sin_addr), sizeof(gw->ourip));
if (ast_ouraddrfor(&gw->addr.sin_addr, &gw->ourip))
memcpy(&gw->ourip, &__ourip, sizeof(gw->ourip));
return gw;
}