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Give ip and mtu to client
This commit is contained in:
parent
03509b9e78
commit
6864263aac
24
dns.c
24
dns.c
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@ -55,6 +55,15 @@ short delayed_q_id;
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struct sockaddr_in delayed_q_from;
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struct sockaddr_in delayed_q_from;
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int delayed_q_fromlen;
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int delayed_q_fromlen;
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struct packet
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{
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int len;
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int offset;
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char data[64*1024];
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};
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struct packet packetbuf;
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int
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int
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open_dns(const char *host, const char *domain)
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open_dns(const char *host, const char *domain)
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{
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{
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@ -503,13 +512,6 @@ dnsd_forceack(int fd)
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delayed_q_id = 0;
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delayed_q_id = 0;
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}
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}
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struct packet
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{
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int len;
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int offset;
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char data[64*1024];
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};
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static int
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static int
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decodepacket(const char *name, struct packet *packet)
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decodepacket(const char *name, struct packet *packet)
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{
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{
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@ -517,6 +519,7 @@ decodepacket(const char *name, struct packet *packet)
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int len;
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int len;
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int last;
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int last;
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int ping;
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int ping;
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int hello;
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char *dp;
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char *dp;
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char *domain;
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char *domain;
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const char *np;
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const char *np;
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@ -524,10 +527,11 @@ decodepacket(const char *name, struct packet *packet)
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len = 0;
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len = 0;
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last = (name[0] == '1');
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last = (name[0] == '1');
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ping = (name[0] == 'p' || name[0] == 'P');
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ping = (name[0] == 'p' || name[0] == 'P');
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hello = (name[0] == 'h' || name[0] == 'H');
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domain = strstr(name, topdomain);
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domain = strstr(name, topdomain);
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if (!ping && domain) {
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if (!ping && !hello && domain) {
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np = name + 1;
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np = name + 1;
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dp = packet->data + packet->offset;
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dp = packet->data + packet->offset;
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@ -550,6 +554,8 @@ decodepacket(const char *name, struct packet *packet)
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if(last) {
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if(last) {
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len = packet->len;
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len = packet->len;
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packet->len = packet->offset = 0;
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packet->len = packet->offset = 0;
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} else if (hello) {
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len = GOTHELLO;
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} else {
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} else {
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len = 0;
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len = 0;
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}
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}
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@ -563,8 +569,6 @@ close_dnsd(int fd)
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close(fd);
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close(fd);
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}
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}
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struct packet packetbuf;
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int
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int
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dnsd_read(int fd, char *buf, int buflen)
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dnsd_read(int fd, char *buf, int buflen)
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{
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{
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2
dns.h
2
dns.h
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@ -17,6 +17,8 @@
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#ifndef _DNS_H_
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#ifndef _DNS_H_
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#define _DNS_H_
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#define _DNS_H_
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#define GOTHELLO -5
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int open_dns(const char *, const char *);
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int open_dns(const char *, const char *);
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void close_dns(int);
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void close_dns(int);
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@ -90,8 +90,13 @@ tunnel(int tun_fd, int dns_fd)
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}
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}
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if(FD_ISSET(dns_fd, &fds)) {
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if(FD_ISSET(dns_fd, &fds)) {
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read = dnsd_read(dns_fd, in, sizeof(in));
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read = dnsd_read(dns_fd, in, sizeof(in));
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if (read <= 0)
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if (read <= 0) {
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if (read == GOTHELLO) {
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read = snprintf(in, sizeof(in), "%s-%d", "172.30.5.2", 1023);
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dnsd_queuepacket(in, read);
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}
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continue;
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continue;
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}
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outlen = sizeof(out);
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outlen = sizeof(out);
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uncompress(out, &outlen, in, read);
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uncompress(out, &outlen, in, read);
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@ -208,7 +213,6 @@ main(int argc, char **argv)
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if ((dnsd_fd = open_dnsd(argv[1])) == -1)
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if ((dnsd_fd = open_dnsd(argv[1])) == -1)
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goto cleanup2;
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goto cleanup2;
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if (newroot) {
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if (newroot) {
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if (chroot(newroot) != 0 || chdir("/") != 0)
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if (chroot(newroot) != 0 || chdir("/") != 0)
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err(1, "%s", newroot);
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err(1, "%s", newroot);
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