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The worker process receives the client's IPs from the main process.

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That eliminates the need to read the IP address from the tun device
(which can be quite tricky to implement in a clean portable way).
This commit is contained in:
Nikos Mavrogiannopoulos
2014-01-31 20:47:20 +01:00
parent f715cf08f0
commit 28e5d62f3f
12 changed files with 172 additions and 275 deletions
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73
src/worker-misc.c
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@@ -33,6 +33,10 @@
#include <unistd.h>
#include <limits.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <vpn.h>
#include <worker.h>
#include <cookies.h>
@@ -132,3 +136,72 @@ udp_fd_fail:
return -1;
}
/* Completes the VPN device information.
*
* Returns 0 on success.
*/
int complete_vpn_info(worker_st * ws, struct vpn_st *vinfo)
{
int ret, fd;
struct ifreq ifr;
if (vinfo->ipv4 == NULL && vinfo->ipv6 == NULL) {
return -1;
}
#define LOCAL "local"
if (ws->config->network.ipv4_dns
&& strcmp(ws->config->network.ipv4_dns, LOCAL) == 0)
vinfo->ipv4_dns = vinfo->ipv4_local;
else
vinfo->ipv4_dns = ws->config->network.ipv4_dns;
if (ws->config->network.ipv6_dns
&& strcmp(ws->config->network.ipv6_dns, LOCAL) == 0)
vinfo->ipv6_dns = vinfo->ipv6_local;
else
vinfo->ipv6_dns = ws->config->network.ipv6_dns;
if (ws->config->network.ipv4_nbns
&& strcmp(ws->config->network.ipv4_nbns, LOCAL) == 0)
vinfo->ipv4_nbns = vinfo->ipv4_local;
else
vinfo->ipv4_nbns = ws->config->network.ipv4_nbns;
if (ws->config->network.ipv6_nbns
&& strcmp(ws->config->network.ipv6_nbns, LOCAL) == 0)
vinfo->ipv6_nbns = vinfo->ipv6_local;
else
vinfo->ipv6_nbns = ws->config->network.ipv6_nbns;
vinfo->routes_size = ws->config->network.routes_size;
if (ws->config->network.routes_size > 0)
vinfo->routes = ws->config->network.routes;
vinfo->ipv4_netmask = ws->config->network.ipv4_netmask;
vinfo->ipv6_netmask = ws->config->network.ipv6_netmask;
if (ws->config->network.mtu != 0) {
vinfo->mtu = ws->config->network.mtu;
} else {
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd == -1)
return -1;
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_addr.sa_family = AF_INET;
snprintf(ifr.ifr_name, IFNAMSIZ, "%s", vinfo->name);
ret = ioctl(fd, SIOCGIFMTU, (caddr_t) & ifr);
if (ret < 0) {
oclog(ws, LOG_ERR,
"cannot obtain MTU for %s. Assuming 1500",
vinfo->name);
vinfo->mtu = 1500;
} else {
vinfo->mtu = ifr.ifr_mtu;
}
close(fd);
}
return 0;
}