+/*
+ * returns 0 if we get a negative match for the hostname or the ip
+ * or if we get no match at all. returns 1 otherwise.
+ */
+int
+match_host_and_ip(const char *host, const char *ipaddr,
+ const char *patterns)
+{
+ int mhost, mip;
+
+ /* negative ipaddr match */
+ if ((mip = match_hostname(ipaddr, patterns, strlen(patterns))) == -1)
+ return 0;
+ /* negative hostname match */
+ if ((mhost = match_hostname(host, patterns, strlen(patterns))) == -1)
+ return 0;
+ /* no match at all */
+ if (mhost == 0 && mip == 0)
+ return 0;
+ return 1;
+}
+
+/*
+ * match user, user@host_or_ip, user@host_or_ip_list against pattern
+ */
+int
+match_user(const char *user, const char *host, const char *ipaddr,
+ const char *pattern)
+{
+ char *p, *pat;
+ int ret;
+
+ if ((p = strchr(pattern,'@')) == NULL)
+ return match_pattern(user, pattern);
+
+ pat = xstrdup(pattern);
+ p = strchr(pat, '@');
+ *p++ = '\0';
+
+ if ((ret = match_pattern(user, pat)) == 1)
+ ret = match_host_and_ip(host, ipaddr, p);
+ xfree(pat);
+
+ return ret;
+}
+
+/*
+ * Returns first item from client-list that is also supported by server-list,
+ * caller must xfree() returned string.
+ */
+#define MAX_PROP 40