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-rw-r--r--src/shared/socket-util.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/src/shared/socket-util.c b/src/shared/socket-util.c
index 1175795d7c..0097f011bb 100644
--- a/src/shared/socket-util.c
+++ b/src/shared/socket-util.c
@@ -568,6 +568,89 @@ bool socket_address_matches_fd(const SocketAddress *a, int fd) {
return false;
}
+int getpeername_pretty(int fd, char **ret) {
+
+ union {
+ struct sockaddr sa;
+ struct sockaddr_un un;
+ struct sockaddr_in in;
+ struct sockaddr_in6 in6;
+ struct sockaddr_storage storage;
+ } sa;
+
+ socklen_t salen;
+ char *p;
+
+ assert(fd >= 0);
+ assert(ret);
+
+ salen = sizeof(sa);
+ if (getpeername(fd, &sa.sa, &salen) < 0)
+ return -errno;
+
+ switch (sa.sa.sa_family) {
+
+ case AF_INET: {
+ uint32_t a;
+
+ a = ntohl(sa.in.sin_addr.s_addr);
+
+ if (asprintf(&p,
+ "%u.%u.%u.%u:%u",
+ a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
+ ntohs(sa.in.sin_port)) < 0)
+ return -ENOMEM;
+
+ break;
+ }
+
+ case AF_INET6: {
+ static const unsigned char ipv4_prefix[] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF
+ };
+
+ if (memcmp(&sa.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) {
+ const uint8_t *a = sa.in6.sin6_addr.s6_addr+12;
+
+ if (asprintf(&p,
+ "%u.%u.%u.%u:%u",
+ a[0], a[1], a[2], a[3],
+ ntohs(sa.in6.sin6_port)) < 0)
+ return -ENOMEM;
+ } else {
+ char a[INET6_ADDRSTRLEN];
+
+ if (asprintf(&p,
+ "%s:%u",
+ inet_ntop(AF_INET6, &sa.in6.sin6_addr, a, sizeof(a)),
+ ntohs(sa.in6.sin6_port)) < 0)
+ return -ENOMEM;
+ }
+
+ break;
+ }
+
+ case AF_UNIX: {
+ struct ucred ucred;
+
+ salen = sizeof(ucred);
+ if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &salen) < 0)
+ return -errno;
+
+ if (asprintf(&p, "PID %lu/UID %lu", (unsigned long) ucred.pid, (unsigned long) ucred.pid) < 0)
+ return -ENOMEM;
+
+ break;
+ }
+
+ default:
+ return -ENOTSUP;
+ }
+
+ *ret = p;
+ return 0;
+}
+
static const char* const netlink_family_table[] = {
[NETLINK_ROUTE] = "route",
[NETLINK_FIREWALL] = "firewall",