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IPv6: Create single way to format IP addresses

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This commit is contained in:
Erik Ekman 2014-02-06 19:39:16 +01:00
parent a737d6ea7f
commit f02339b3b2
6 changed files with 41 additions and 27 deletions
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2
Makefile
View file

@ -38,7 +38,7 @@ cross-android-dist:
@zip -r iodine-latest-android.zip iodine-latest-android
cross-mingw:
@(cd src; $(MAKE) TARGETOS=windows32 CC=i686-mingw32-gcc all)
@(cd src; $(MAKE) TARGETOS=windows32 CC=i686-w64-mingw32-gcc all)
cross-mingw-dist: cross-mingw
@rm -rf iodine-latest-win32*

25
src/common.c
View file

@ -113,6 +113,31 @@ check_superuser(void (*usage_fn)(void))
#endif
}
char *
format_addr(struct sockaddr_storage *sockaddr, int sockaddr_len)
{
static char dst[INET6_ADDRSTRLEN + 1];
memset(dst, 0, sizeof(dst));
if (sockaddr->ss_family == AF_INET && sockaddr_len >= sizeof(struct sockaddr_in)) {
struct sockaddr_in *addr = (struct sockaddr_in *) sockaddr;
inet_ntop(addr->sin_family, &addr->sin_addr, dst, sizeof(dst) - 1);
} else if (sockaddr->ss_family == AF_INET6 && sockaddr_len >= sizeof(struct sockaddr_in6)) {
struct sockaddr_in6 *addr = (struct sockaddr_in6 *) sockaddr;
if (IN6_IS_ADDR_V4MAPPED(&addr->sin6_addr)) {
struct in_addr ia;
/* Get mapped v4 addr from last 32bit field */
memcpy(&ia.s_addr, &addr->sin6_addr.s6_addr[12], sizeof(ia));
inet_ntop(AF_INET, &ia, dst, sizeof(dst) - 1);
} else {
inet_ntop(addr->sin6_family, &addr->sin6_addr, dst, sizeof(dst) - 1);
}
} else {
dst[0] = '?';
}
return dst;
}
int
get_addr(char *host, int port, int addr_family, int flags, struct sockaddr_storage *out)
{

1
src/common.h
View file

@ -107,6 +107,7 @@ enum connection {
};
void check_superuser(void (*usage_fn)(void));
char *format_addr(struct sockaddr_storage *sockaddr, int sockaddr_len);
int get_addr(char *, int, int, int, struct sockaddr_storage *);
int open_dns(struct sockaddr_storage *, size_t);
int open_dns_from_host(char *host, int port, int addr_family, int flags);

2
src/fw_query.h
View file

@ -28,7 +28,7 @@
#define FW_QUERY_CACHE_SIZE 16
struct fw_query {
struct sockaddr addr;
struct sockaddr_storage addr;
int addrlen;
unsigned short id;
};

2
src/iodine.c
View file

@ -346,7 +346,7 @@ main(int argc, char **argv)
signal(SIGTERM, sighandler);
fprintf(stderr, "Sending DNS queries for %s to %s\n",
topdomain, nameserv_host);
topdomain, format_addr(&nameservaddr, nameservaddr_len));
if (client_handshake(dns_fd, raw_mode, autodetect_frag_size, max_downstream_frag_size)) {
retval = 1;

36
src/iodined.c
View file

@ -215,10 +215,8 @@ send_raw(int fd, char *buf, int buflen, int user, int cmd, struct query *q)
packet[RAW_HDR_CMD] = cmd | (user & 0x0F);
if (debug >= 2) {
struct sockaddr_in *tempin;
tempin = (struct sockaddr_in *) &(q->from);
fprintf(stderr, "TX-raw: client %s, cmd %d, %d bytes\n",
inet_ntoa(tempin->sin_addr), cmd, len);
format_addr(&q->from, q->fromlen), cmd, len);
}
sendto(fd, packet, len, 0, (struct sockaddr *) &q->from, q->fromlen);
@ -766,7 +764,7 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
users[userid].downenc = 'T';
send_version_response(dns_fd, VERSION_ACK, users[userid].seed, userid, q);
syslog(LOG_INFO, "accepted version for user #%d from %s",
userid, inet_ntoa(tempin->sin_addr));
userid, format_addr(&q->from, q->fromlen));
users[userid].q.id = 0;
users[userid].q.id2 = 0;
users[userid].q_sendrealsoon.id = 0;
@ -808,12 +806,12 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
/* No space for another user */
send_version_response(dns_fd, VERSION_FULL, created_users, 0, q);
syslog(LOG_INFO, "dropped user from %s, server full",
inet_ntoa(((struct sockaddr_in *) &q->from)->sin_addr));
format_addr(&q->from, q->fromlen));
}
} else {
send_version_response(dns_fd, VERSION_NACK, VERSION, 0, q);
syslog(LOG_INFO, "dropped user from %s, sent bad version %08X",
inet_ntoa(((struct sockaddr_in *) &q->from)->sin_addr), version);
format_addr(&q->from, q->fromlen), version);
}
return;
} else if(in[0] == 'L' || in[0] == 'l') {
@ -829,7 +827,7 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
if (check_user_and_ip(userid, q) != 0) {
write_dns(dns_fd, q, "BADIP", 5, 'T');
syslog(LOG_WARNING, "dropped login request from user #%d from unexpected source %s",
userid, inet_ntoa(((struct sockaddr_in *) &q->from)->sin_addr));
userid, format_addr(&q->from, q->fromlen));
return;
} else {
users[userid].last_pkt = time(NULL);
@ -855,7 +853,7 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
} else {
write_dns(dns_fd, q, "LNAK", 4, 'T');
syslog(LOG_WARNING, "rejected login request from user #%d from %s, bad password",
userid, inet_ntoa(((struct sockaddr_in *) &q->from)->sin_addr));
userid, format_addr(&q->from, q->fromlen));
}
}
return;
@ -1493,10 +1491,8 @@ handle_ns_request(int dns_fd, struct query *q)
}
if (debug >= 2) {
struct sockaddr_in *tempin;
tempin = (struct sockaddr_in *) &(q->from);
fprintf(stderr, "TX: client %s, type %d, name %s, %d bytes NS reply\n",
inet_ntoa(tempin->sin_addr), q->type, q->name, len);
format_addr(&q->from, q->fromlen), q->type, q->name, len);
}
if (sendto(dns_fd, buf, len, 0, (struct sockaddr*)&q->from, q->fromlen) <= 0) {
warn("ns reply send error");
@ -1527,10 +1523,8 @@ handle_a_request(int dns_fd, struct query *q, int fakeip)
}
if (debug >= 2) {
struct sockaddr_in *tempin;
tempin = (struct sockaddr_in *) &(q->from);
fprintf(stderr, "TX: client %s, type %d, name %s, %d bytes A reply\n",
inet_ntoa(tempin->sin_addr), q->type, q->name, len);
format_addr(&q->from, q->fromlen), q->type, q->name, len);
}
if (sendto(dns_fd, buf, len, 0, (struct sockaddr*)&q->from, q->fromlen) <= 0) {
warn("a reply send error");
@ -1576,7 +1570,7 @@ static int
tunnel_bind(int bind_fd, int dns_fd)
{
char packet[64*1024];
struct sockaddr_in from;
struct sockaddr_storage from;
socklen_t fromlen;
struct fw_query *query;
unsigned short id;
@ -1603,10 +1597,8 @@ tunnel_bind(int bind_fd, int dns_fd)
}
if (debug >= 2) {
struct sockaddr_in *in;
in = (struct sockaddr_in *) &(query->addr);
fprintf(stderr, "TX: client %s id %u, %d bytes\n",
inet_ntoa(in->sin_addr), (id & 0xffff), r);
format_addr(&query->addr, query->addrlen), (id & 0xffff), r);
}
if (sendto(dns_fd, packet, r, 0, (const struct sockaddr *) &(query->addr),
@ -1629,10 +1621,8 @@ tunnel_dns(int tun_fd, int dns_fd, int bind_fd)
return 0;
if (debug >= 2) {
struct sockaddr_in *tempin;
tempin = (struct sockaddr_in *) &(q.from);
fprintf(stderr, "RX: client %s, type %d, name %s\n",
inet_ntoa(tempin->sin_addr), q.type, q.name);
format_addr(&q.from, q.fromlen), q.type, q.name);
}
domain_len = strlen(q.name) - strlen(topdomain);
@ -2173,10 +2163,8 @@ write_dns(int fd, struct query *q, char *data, int datalen, char downenc)
}
if (debug >= 2) {
struct sockaddr_in *tempin;
tempin = (struct sockaddr_in *) &(q->from);
fprintf(stderr, "TX: client %s, type %d, name %s, %d bytes data\n",
inet_ntoa(tempin->sin_addr), q->type, q->name, datalen);
format_addr(&q->from, q->fromlen), q->type, q->name, datalen);
}
sendto(fd, buf, len, 0, (struct sockaddr*)&q->from, q->fromlen);