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Switch to IPv6-ready storage of user IP address

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This commit is contained in:
Erik Ekman 2015-06-27 11:57:39 +02:00
parent 5233d1e858
commit 778d29825d
2 changed files with 19 additions and 12 deletions
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28
src/iodined.c
View file

@ -178,8 +178,6 @@ syslog(int a, const char *str, ...)
static int static int
check_user_and_ip(int userid, struct query *q) check_user_and_ip(int userid, struct query *q)
{ {
struct sockaddr_in *tempin;
/* Note: duplicate in handle_raw_login() except IP-address check */ /* Note: duplicate in handle_raw_login() except IP-address check */
if (userid < 0 || userid >= created_users ) { if (userid < 0 || userid >= created_users ) {
@ -197,8 +195,19 @@ check_user_and_ip(int userid, struct query *q)
return 0; return 0;
} }
tempin = (struct sockaddr_in *) &(q->from); if (q->from.ss_family != users[userid].host.ss_family) {
return memcmp(&(users[userid].host), &(tempin->sin_addr), sizeof(struct in_addr)); return 1;
}
/* Check IPv4 */
if (q->from.ss_family == AF_INET) {
struct sockaddr_in *expected, *received;
expected = (struct sockaddr_in *) &(users[userid].host);
received = (struct sockaddr_in *) &(q->from);
return memcmp(&(expected->sin_addr), &(received->sin_addr), sizeof(struct in_addr));
}
/* Unknown address family */
return 1;
} }
/* This checks that user has passed normal (non-raw) login challenge */ /* This checks that user has passed normal (non-raw) login challenge */
@ -769,12 +778,11 @@ handle_null_request(int tun_fd, int dns_fd, struct query *q, int domain_len)
userid = find_available_user(); userid = find_available_user();
if (userid >= 0) { if (userid >= 0) {
int i; int i;
struct sockaddr_in *tempin;
users[userid].seed = rand(); users[userid].seed = rand();
/* Store remote IP number */ /* Store remote IP number */
tempin = (struct sockaddr_in *) &(q->from); memcpy(&(users[userid].host), &(q->from), q->fromlen);
memcpy(&(users[userid].host), &(tempin->sin_addr), sizeof(struct in_addr)); users[userid].hostlen = q->fromlen;
memcpy(&(users[userid].q), q, sizeof(struct query)); memcpy(&(users[userid].q), q, sizeof(struct query));
users[userid].encoder = get_base32_encoder(); users[userid].encoder = get_base32_encoder();
@ -1879,15 +1887,13 @@ handle_raw_login(char *packet, int len, struct query *q, int fd, int userid)
/* User sends hash of seed + 1 */ /* User sends hash of seed + 1 */
login_calculate(myhash, 16, password, users[userid].seed + 1); login_calculate(myhash, 16, password, users[userid].seed + 1);
if (memcmp(packet, myhash, 16) == 0) { if (memcmp(packet, myhash, 16) == 0) {
struct sockaddr_in *tempin;
/* Update query and time info for user */ /* Update query and time info for user */
users[userid].last_pkt = time(NULL); users[userid].last_pkt = time(NULL);
memcpy(&(users[userid].q), q, sizeof(struct query)); memcpy(&(users[userid].q), q, sizeof(struct query));
/* Store remote IP number */ /* Store remote IP number */
tempin = (struct sockaddr_in *) &(q->from); memcpy(&(users[userid].host), &(q->from), q->fromlen);
memcpy(&(users[userid].host), &(tempin->sin_addr), sizeof(struct in_addr)); users[userid].hostlen = q->fromlen;
/* Correct hash, reply with hash of seed - 1 */ /* Correct hash, reply with hash of seed - 1 */
user_set_conn_type(userid, CONN_RAW_UDP); user_set_conn_type(userid, CONN_RAW_UDP);

3
src/user.h
View file

@ -43,7 +43,8 @@ struct tun_user {
time_t last_pkt; time_t last_pkt;
int seed; int seed;
in_addr_t tun_ip; in_addr_t tun_ip;
struct in_addr host; struct sockaddr_storage host;
socklen_t hostlen;
struct query q; struct query q;
struct query q_sendrealsoon; struct query q_sendrealsoon;
int q_sendrealsoon_new; int q_sendrealsoon_new;