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https://github.com/yarrick/iodine.git
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IPv6: Create single way to format IP addresses
This commit is contained in:
parent
a737d6ea7f
commit
f02339b3b2
2
Makefile
2
Makefile
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@ -38,7 +38,7 @@ cross-android-dist:
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@zip -r iodine-latest-android.zip iodine-latest-android
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cross-mingw:
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@(cd src; $(MAKE) TARGETOS=windows32 CC=i686-mingw32-gcc all)
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@(cd src; $(MAKE) TARGETOS=windows32 CC=i686-w64-mingw32-gcc all)
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cross-mingw-dist: cross-mingw
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@rm -rf iodine-latest-win32*
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25
src/common.c
25
src/common.c
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@ -113,6 +113,31 @@ check_superuser(void (*usage_fn)(void))
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#endif
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}
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char *
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format_addr(struct sockaddr_storage *sockaddr, int sockaddr_len)
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{
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static char dst[INET6_ADDRSTRLEN + 1];
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memset(dst, 0, sizeof(dst));
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if (sockaddr->ss_family == AF_INET && sockaddr_len >= sizeof(struct sockaddr_in)) {
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struct sockaddr_in *addr = (struct sockaddr_in *) sockaddr;
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inet_ntop(addr->sin_family, &addr->sin_addr, dst, sizeof(dst) - 1);
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} else if (sockaddr->ss_family == AF_INET6 && sockaddr_len >= sizeof(struct sockaddr_in6)) {
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struct sockaddr_in6 *addr = (struct sockaddr_in6 *) sockaddr;
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if (IN6_IS_ADDR_V4MAPPED(&addr->sin6_addr)) {
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struct in_addr ia;
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/* Get mapped v4 addr from last 32bit field */
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memcpy(&ia.s_addr, &addr->sin6_addr.s6_addr[12], sizeof(ia));
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inet_ntop(AF_INET, &ia, dst, sizeof(dst) - 1);
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} else {
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inet_ntop(addr->sin6_family, &addr->sin6_addr, dst, sizeof(dst) - 1);
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}
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} else {
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dst[0] = '?';
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}
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return dst;
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}
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int
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get_addr(char *host, int port, int addr_family, int flags, struct sockaddr_storage *out)
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{
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@ -107,6 +107,7 @@ enum connection {
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};
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void check_superuser(void (*usage_fn)(void));
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char *format_addr(struct sockaddr_storage *sockaddr, int sockaddr_len);
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int get_addr(char *, int, int, int, struct sockaddr_storage *);
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int open_dns(struct sockaddr_storage *, size_t);
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int open_dns_from_host(char *host, int port, int addr_family, int flags);
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@ -28,7 +28,7 @@
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#define FW_QUERY_CACHE_SIZE 16
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struct fw_query {
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struct sockaddr addr;
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struct sockaddr_storage addr;
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int addrlen;
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unsigned short id;
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};
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@ -346,7 +346,7 @@ main(int argc, char **argv)
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signal(SIGTERM, sighandler);
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fprintf(stderr, "Sending DNS queries for %s to %s\n",
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topdomain, nameserv_host);
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topdomain, format_addr(&nameservaddr, nameservaddr_len));
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if (client_handshake(dns_fd, raw_mode, autodetect_frag_size, max_downstream_frag_size)) {
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retval = 1;
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@ -215,10 +215,8 @@ send_raw(int fd, char *buf, int buflen, int user, int cmd, struct query *q)
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packet[RAW_HDR_CMD] = cmd | (user & 0x0F);
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if (debug >= 2) {
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struct sockaddr_in *tempin;
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tempin = (struct sockaddr_in *) &(q->from);
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fprintf(stderr, "TX-raw: client %s, cmd %d, %d bytes\n",
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inet_ntoa(tempin->sin_addr), cmd, len);
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format_addr(&q->from, q->fromlen), cmd, len);
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}
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sendto(fd, packet, len, 0, (struct sockaddr *) &q->from, q->fromlen);
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@ -766,7 +764,7 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
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users[userid].downenc = 'T';
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send_version_response(dns_fd, VERSION_ACK, users[userid].seed, userid, q);
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syslog(LOG_INFO, "accepted version for user #%d from %s",
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userid, inet_ntoa(tempin->sin_addr));
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userid, format_addr(&q->from, q->fromlen));
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users[userid].q.id = 0;
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users[userid].q.id2 = 0;
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users[userid].q_sendrealsoon.id = 0;
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@ -808,12 +806,12 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
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/* No space for another user */
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send_version_response(dns_fd, VERSION_FULL, created_users, 0, q);
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syslog(LOG_INFO, "dropped user from %s, server full",
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inet_ntoa(((struct sockaddr_in *) &q->from)->sin_addr));
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format_addr(&q->from, q->fromlen));
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}
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} else {
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send_version_response(dns_fd, VERSION_NACK, VERSION, 0, q);
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syslog(LOG_INFO, "dropped user from %s, sent bad version %08X",
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inet_ntoa(((struct sockaddr_in *) &q->from)->sin_addr), version);
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format_addr(&q->from, q->fromlen), version);
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}
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return;
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} else if(in[0] == 'L' || in[0] == 'l') {
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@ -829,7 +827,7 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
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if (check_user_and_ip(userid, q) != 0) {
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write_dns(dns_fd, q, "BADIP", 5, 'T');
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syslog(LOG_WARNING, "dropped login request from user #%d from unexpected source %s",
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userid, inet_ntoa(((struct sockaddr_in *) &q->from)->sin_addr));
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userid, format_addr(&q->from, q->fromlen));
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return;
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} else {
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users[userid].last_pkt = time(NULL);
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@ -855,7 +853,7 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
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} else {
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write_dns(dns_fd, q, "LNAK", 4, 'T');
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syslog(LOG_WARNING, "rejected login request from user #%d from %s, bad password",
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userid, inet_ntoa(((struct sockaddr_in *) &q->from)->sin_addr));
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userid, format_addr(&q->from, q->fromlen));
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}
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}
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return;
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@ -1493,10 +1491,8 @@ handle_ns_request(int dns_fd, struct query *q)
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}
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if (debug >= 2) {
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struct sockaddr_in *tempin;
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tempin = (struct sockaddr_in *) &(q->from);
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fprintf(stderr, "TX: client %s, type %d, name %s, %d bytes NS reply\n",
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inet_ntoa(tempin->sin_addr), q->type, q->name, len);
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format_addr(&q->from, q->fromlen), q->type, q->name, len);
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}
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if (sendto(dns_fd, buf, len, 0, (struct sockaddr*)&q->from, q->fromlen) <= 0) {
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warn("ns reply send error");
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@ -1527,10 +1523,8 @@ handle_a_request(int dns_fd, struct query *q, int fakeip)
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}
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if (debug >= 2) {
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struct sockaddr_in *tempin;
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tempin = (struct sockaddr_in *) &(q->from);
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fprintf(stderr, "TX: client %s, type %d, name %s, %d bytes A reply\n",
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inet_ntoa(tempin->sin_addr), q->type, q->name, len);
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format_addr(&q->from, q->fromlen), q->type, q->name, len);
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}
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if (sendto(dns_fd, buf, len, 0, (struct sockaddr*)&q->from, q->fromlen) <= 0) {
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warn("a reply send error");
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@ -1576,7 +1570,7 @@ static int
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tunnel_bind(int bind_fd, int dns_fd)
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{
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char packet[64*1024];
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struct sockaddr_in from;
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struct sockaddr_storage from;
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socklen_t fromlen;
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struct fw_query *query;
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unsigned short id;
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@ -1603,10 +1597,8 @@ tunnel_bind(int bind_fd, int dns_fd)
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}
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if (debug >= 2) {
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struct sockaddr_in *in;
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in = (struct sockaddr_in *) &(query->addr);
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fprintf(stderr, "TX: client %s id %u, %d bytes\n",
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inet_ntoa(in->sin_addr), (id & 0xffff), r);
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format_addr(&query->addr, query->addrlen), (id & 0xffff), r);
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}
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if (sendto(dns_fd, packet, r, 0, (const struct sockaddr *) &(query->addr),
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@ -1629,10 +1621,8 @@ tunnel_dns(int tun_fd, int dns_fd, int bind_fd)
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return 0;
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if (debug >= 2) {
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struct sockaddr_in *tempin;
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tempin = (struct sockaddr_in *) &(q.from);
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fprintf(stderr, "RX: client %s, type %d, name %s\n",
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inet_ntoa(tempin->sin_addr), q.type, q.name);
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format_addr(&q.from, q.fromlen), q.type, q.name);
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}
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domain_len = strlen(q.name) - strlen(topdomain);
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@ -2173,10 +2163,8 @@ write_dns(int fd, struct query *q, char *data, int datalen, char downenc)
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}
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if (debug >= 2) {
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struct sockaddr_in *tempin;
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tempin = (struct sockaddr_in *) &(q->from);
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fprintf(stderr, "TX: client %s, type %d, name %s, %d bytes data\n",
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inet_ntoa(tempin->sin_addr), q->type, q->name, datalen);
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format_addr(&q->from, q->fromlen), q->type, q->name, datalen);
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}
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sendto(fd, buf, len, 0, (struct sockaddr*)&q->from, q->fromlen);
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