login: add regression test for IP address checking code

The hnmatch() in checktty.c is checking IP addresses if the login util
is compiled without PAM support.

Signed-off-by: Karel Zak <kzak@redhat.com>

login-utils/Makefile.am

@@ -116,3 +116,8 @@ install-exec-hook::
 	cd $(DESTDIR)$(mandir)/man8 && ln -sf initctl.8 provide.8
 
 endif
+
+noinst_PROGRAMS = checktty_test
+checktty_test_SOURCES = checktty.c login.h
+checktty_test_CFLAGS = -DMAIN_TEST_CHECKTTY
+

login-utils/checktty.c

@@ -186,6 +186,65 @@ hnmatch(const char *hn, const char *pat)
     }
 }
 
+#ifdef MAIN_TEST_CHECKTTY
+
+char	hostaddress[4];
+char	*hostname;
+void	sleepexit(int eval) {}		/* dummy for this test */
+void	badlogin(const char *s) {}	/* dummy for this test */
+
+int
+main(int argc, char **argv)
+{
+	struct addrinfo hints, *info = NULL;
+	struct addrexp {
+		const char *range;
+		const char *ip;
+	} alist[] = {
+		{ "130.225.16.0/255.255.254.0", "130.225.16.1" },
+		{ "130.225.16.0/255.255.254.0", "10.20.30.1" },
+		{ "130.225.0.0/255.254.0.0", "130.225.16.1" },
+		{ "130.225.0.0/255.254.0.0", "130.225.17.1" },
+		{ "130.225.0.0/255.254.0.0", "150.160.170.180" },
+		{ NULL, NULL }
+	}, *item;
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_INET;
+	hints.ai_flags = AI_NUMERICHOST |  AI_PASSIVE | AI_ADDRCONFIG;
+	hints.ai_socktype = SOCK_STREAM;
+
+	for (item = alist; item->range; item++) {
+
+		printf("hnmatch() on %-30s <-- %-15s: ", item->range, item->ip);
+
+		if (getaddrinfo(item->ip, NULL, &hints, &info)==0 && info) {
+			if (info->ai_family == AF_INET)	{
+			    struct sockaddr_in *sa =
+				    	(struct sockaddr_in *) info->ai_addr;
+			    memcpy(hostaddress, &(sa->sin_addr),
+					sizeof(sa->sin_addr));
+			}
+/***
+			if (info->ai_family == AF_INET6) {
+			    struct sockaddr_in6 *sa =
+				    	(struct sockaddr_in6 *) info->ai_addr;
+			    memcpy(hostaddress, &(sa->sin6_addr),
+					sizeof(sa->sin6_addr));
+			}
+***/
+			freeaddrinfo(info);
+			printf("%s\n", hnmatch("dummy", item->range) ?
+						"match" : "mismatch");
+		}
+		else
+			printf("getaddrinfo() failed\n");
+
+	}
+	return 0;
+}
+#endif /* MAIN_TEST_CHECKTTY */
+
 static char *wdays[] = { "sun", "mon", "tue", "wed", "thu", "fri", "sat" };
 
 /* example timespecs:

tests/Makefile.am

@@ -16,7 +16,8 @@ EXTRA_DIST = 	expected/* \
 		ts-mount-paths \
 		ts-namei-logic \
 		ts-cramfs-mkfs \
-		ts-look-separator
+		ts-look-separator \
+		ts-login-checktty
 
 distclean-local:
 	rm -rf output diff

tests/commands.sh.in

@@ -21,3 +21,5 @@ TS_CMD_COL=${TS_CMD_COL:-"$TOPDIR/text-utils/col"}
 TS_CMD_NAMEI=${TS_CMD_NAMEI-"$TOPDIR/misc-utils/namei"}
 TS_CMD_LOOK=${TS_CMD_LOOK-"$TOPDIR/misc-utils/look"}
 
+TS_CMD_CHECKTTY=${TS_CMD_CHECKTTY-"$TOPDIR/login-utils/checktty_test"}
+

tests/expected/ts-login-checktty

@@ -0,0 +1,5 @@
+hnmatch() on 130.225.16.0/255.255.254.0     <-- 130.225.16.1   : match
+hnmatch() on 130.225.16.0/255.255.254.0     <-- 10.20.30.1     : mismatch
+hnmatch() on 130.225.0.0/255.254.0.0        <-- 130.225.16.1   : match
+hnmatch() on 130.225.0.0/255.254.0.0        <-- 130.225.17.1   : match
+hnmatch() on 130.225.0.0/255.254.0.0        <-- 150.160.170.180: mismatch

tests/ts-login-checktty

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+. commands.sh
+. functions.sh
+
+TS_COMPONENT="login"
+TS_DESC="checktty"
+
+ts_init
+
+touch $TS_OUTPUT
+
+$TS_CMD_CHECKTTY  >> $TS_OUTPUT
+
+ts_finalize
+