Support "[IPv6]" address syntax.

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1893 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 13 insertions, 2 deletions

diff --git a/plugins/netutils.c b/plugins/netutils.c
index 7bf2254..09a73e4 100644
--- a/plugins/netutils.c
+++ b/plugins/netutils.c
@@ -168,7 +168,8 @@ np_net_connect (const char *host_name, int port, int *sd, int proto)
         struct addrinfo hints;
         struct addrinfo *r, *res;
         struct sockaddr_un su;
-        char port_str[6];
+        char port_str[6], host[MAX_HOST_ADDRESS_LENGTH];
+        size_t len;
         int socktype, result;
 
         socktype = (proto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM;
@@ -180,8 +181,18 @@ np_net_connect (const char *host_name, int port, int *sd, int proto)
                 hints.ai_protocol = proto;
                 hints.ai_socktype = socktype;
 
+                len = strlen (host_name);
+                /* check for an [IPv6] address (and strip the brackets) */
+                if (len >= 2 && host_name[0] == '[' && host_name[len - 1] == ']') {
+                        host_name++;
+                        len -= 2;
+                }
+                if (len >= sizeof(host))
+                        return STATE_UNKNOWN;
+                memcpy (host, host_name, len);
+                host[len] = '\0';
                 snprintf (port_str, sizeof (port_str), "%d", port);
-                result = getaddrinfo (host_name, port_str, &hints, &res);
+                result = getaddrinfo (host, port_str, &hints, &res);
 
                 if (result != 0) {
                         printf ("%s\n", gai_strerror (result));