conf-parser: warn when we open configuration files with weird access bits

[elogind.git] / src / shared / net-util.c

diff --git a/src/shared/net-util.c b/src/shared/net-util.c
index 8f8cfc9fdb6d7fe6ece6b9ede732c13a85ec4d95..ba21ae437f3da968aae980c584a32c07a0ffca1c 100644 (file)
--- a/src/shared/net-util.c
+++ b/src/shared/net-util.c
@@ -58,6 +58,12 @@ bool net_match_config(const struct ether_addr *match_mac,
         return 1;
 }
 
+unsigned net_netmask_to_prefixlen(const struct in_addr *addr) {
+        assert(addr);
+
+        return 32 - u32ctz(be32toh(addr->s_addr));
+}
+
 int config_parse_ifname(const char *unit,
                         const char *filename,
                         unsigned line,
@@ -192,16 +198,24 @@ int net_parse_inaddr(const char *address, unsigned char *family, void *dst) {
 
         /* IPv4 */
         r = inet_pton(AF_INET, address, dst);
-        if (r > 0)
-                *family = AF_INET; /* successfully parsed IPv4 address */
-        else  if (r < 0)
+        if (r > 0) {
+                /* succsefully parsed IPv4 address */
+                if (*family == AF_UNSPEC)
+                        *family = AF_INET;
+                else if (*family != AF_INET)
+                        return -EINVAL;
+        } else  if (r < 0)
                 return -errno;
         else {
                 /* not an IPv4 address, so let's try IPv6 */
                 r = inet_pton(AF_INET6, address, dst);
-                if (r > 0)
-                        *family = AF_INET6; /* successfully parsed IPv6 address */
-                else if (r < 0)
+                if (r > 0) {
+                        /* successfully parsed IPv6 address */
+                        if (*family == AF_UNSPEC)
+                                *family = AF_INET6;
+                        else if (*family != AF_INET6)
+                                return -EINVAL;
+                } else if (r < 0)
                         return -errno;
                 else
                         return -EINVAL;