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tcp_wrappers/tcp_wrappers-7.6-bug17795.p...

57 lines
2.2 KiB

diff -up tcp_wrappers_7.6/hosts_access.5.patch5 tcp_wrappers_7.6/hosts_access.5
--- tcp_wrappers_7.6/hosts_access.5.patch5 1995-01-30 19:51:47.000000000 +0100
+++ tcp_wrappers_7.6/hosts_access.5 2008-08-29 09:45:12.000000000 +0200
@@ -89,6 +89,13 @@ An expression of the form `n.n.n.n/m.m.m
bitwise AND of the address and the `mask\'. For example, the net/mask
pattern `131.155.72.0/255.255.254.0\' matches every address in the
range `131.155.72.0\' through `131.155.73.255\'.
+.IP \(bu
+A string that begins with a `/\' character is treated as a file
+name. A host name or address is matched if it matches any host name
+or address pattern listed in the named file. The file format is
+zero or more lines with zero or more host name or address patterns
+separated by whitespace. A file name pattern can be used anywhere
+a host name or address pattern can be used.
.SH WILDCARDS
The access control language supports explicit wildcards:
.IP ALL
diff -up tcp_wrappers_7.6/hosts_access.c.patch5 tcp_wrappers_7.6/hosts_access.c
--- tcp_wrappers_7.6/hosts_access.c.patch5 1997-02-12 02:13:23.000000000 +0100
+++ tcp_wrappers_7.6/hosts_access.c 2008-08-29 09:45:12.000000000 +0200
@@ -240,6 +240,26 @@ struct request_info *request;
}
}
+/* hostfile_match - look up host patterns from file */
+
+static int hostfile_match(path, host)
+char *path;
+struct hosts_info *host;
+{
+ char tok[BUFSIZ];
+ int match = NO;
+ FILE *fp;
+
+ if ((fp = fopen(path, "r")) != 0) {
+ while (fscanf(fp, "%s", tok) == 1 && !(match = host_match(tok, host)))
+ /* void */ ;
+ fclose(fp);
+ } else if (errno != ENOENT) {
+ tcpd_warn("open %s: %m", path);
+ }
+ return (match);
+}
+
/* host_match - match host name and/or address against pattern */
static int host_match(tok, host)
@@ -267,6 +287,8 @@ struct host_info *host;
tcpd_warn("netgroup support is disabled"); /* not tcpd_jump() */
return (NO);
#endif
+ } else if (tok[0] == '/') { /* /file hack */
+ return (hostfile_match(tok, host));
} else if (STR_EQ(tok, "KNOWN")) { /* check address and name */
char *name = eval_hostname(host);
return (STR_NE(eval_hostaddr(host), unknown) && HOSTNAME_KNOWN(name));