diff mbox series

[net-next,v3,03/13] selftests: Move address validation in nettest

Message ID 20210113040040.50813-4-dsahern@kernel.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series selftests: Updates to allow single instance of nettest for client and server | expand

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netdev/tree_selection success Clearly marked for net-next
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netdev/source_inline success Was 0 now: 0
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netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 142 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
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netdev/stable success Stable not CCed

Commit Message

David Ahern Jan. 13, 2021, 4 a.m. UTC 
From: David Ahern <dsahern@gmail.com>

IPv6 addresses can have a device name to declare a scope (e.g.,
fe80::5054:ff:fe12:3456%eth0). The next patch adds support to
switch network namespace before running client or server code
(or both), so move the address validation to the server and
client functions.

IPv4 multicast groups do not have the device scope in the address
specification, so they can be validated inline with option parsing.

Signed-off-by: David Ahern <dsahern@gmail.com>
---
 tools/testing/selftests/net/nettest.c | 60 +++++++++++++++++++--------
 1 file changed, 43 insertions(+), 17 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/net/nettest.c b/tools/testing/selftests/net/nettest.c
index 337ae54e252d..3b083fad3577 100644
--- a/tools/testing/selftests/net/nettest.c
+++ b/tools/testing/selftests/net/nettest.c
@@ -43,12 +43,14 @@ 
 
 struct sock_args {
 	/* local address */
+	const char *local_addr_str;
 	union {
 		struct in_addr  in;
 		struct in6_addr in6;
 	} local_addr;
 
 	/* remote address */
+	const char *remote_addr_str;
 	union {
 		struct in_addr  in;
 		struct in6_addr in6;
@@ -77,6 +79,7 @@  struct sock_args {
 
 	const char *password;
 	/* prefix for MD5 password */
+	const char *md5_prefix_str;
 	union {
 		struct sockaddr_in v4;
 		struct sockaddr_in6 v6;
@@ -88,12 +91,14 @@  struct sock_args {
 	int expected_ifindex;
 
 	/* local address */
+	const char *expected_laddr_str;
 	union {
 		struct in_addr  in;
 		struct in6_addr in6;
 	} expected_laddr;
 
 	/* remote address */
+	const char *expected_raddr_str;
 	union {
 		struct in_addr  in;
 		struct in6_addr in6;
@@ -753,6 +758,34 @@  static int convert_addr(struct sock_args *args, const char *_str,
 	return rc;
 }
 
+static int validate_addresses(struct sock_args *args)
+{
+	if (args->local_addr_str &&
+	    convert_addr(args, args->local_addr_str, ADDR_TYPE_LOCAL) < 0)
+		return 1;
+
+	if (args->remote_addr_str &&
+	    convert_addr(args, args->remote_addr_str, ADDR_TYPE_REMOTE) < 0)
+		return 1;
+
+	if (args->md5_prefix_str &&
+	    convert_addr(args, args->md5_prefix_str,
+			 ADDR_TYPE_MD5_PREFIX) < 0)
+		return 1;
+
+	if (args->expected_laddr_str &&
+	    convert_addr(args, args->expected_laddr_str,
+			 ADDR_TYPE_EXPECTED_LOCAL))
+		return 1;
+
+	if (args->expected_raddr_str &&
+	    convert_addr(args, args->expected_raddr_str,
+			 ADDR_TYPE_EXPECTED_REMOTE))
+		return 1;
+
+	return 0;
+}
+
 static int get_index_from_cmsg(struct msghdr *m)
 {
 	struct cmsghdr *cm;
@@ -1344,7 +1377,7 @@  static int do_server(struct sock_args *args)
 	fd_set rfds;
 	int rc;
 
-	if (resolve_devices(args))
+	if (resolve_devices(args) || validate_addresses(args))
 		return 1;
 
 	if (prog_timeout)
@@ -1532,7 +1565,7 @@  static int do_client(struct sock_args *args)
 		return 1;
 	}
 
-	if (resolve_devices(args))
+	if (resolve_devices(args) || validate_addresses(args))
 		return 1;
 
 	if ((args->use_setsockopt || args->use_cmsg) && !args->ifindex) {
@@ -1680,13 +1713,11 @@  int main(int argc, char *argv[])
 			break;
 		case 'l':
 			args.has_local_ip = 1;
-			if (convert_addr(&args, optarg, ADDR_TYPE_LOCAL) < 0)
-				return 1;
+			args.local_addr_str = optarg;
 			break;
 		case 'r':
 			args.has_remote_ip = 1;
-			if (convert_addr(&args, optarg, ADDR_TYPE_REMOTE) < 0)
-				return 1;
+			args.remote_addr_str = optarg;
 			break;
 		case 'p':
 			if (str_to_uint(optarg, 1, 65535, &tmp) != 0) {
@@ -1733,8 +1764,7 @@  int main(int argc, char *argv[])
 			args.password = optarg;
 			break;
 		case 'm':
-			if (convert_addr(&args, optarg, ADDR_TYPE_MD5_PREFIX) < 0)
-				return 1;
+			args.md5_prefix_str = optarg;
 			break;
 		case 'S':
 			args.use_setsockopt = 1;
@@ -1762,16 +1792,11 @@  int main(int argc, char *argv[])
 			break;
 		case '0':
 			args.has_expected_laddr = 1;
-			if (convert_addr(&args, optarg,
-					 ADDR_TYPE_EXPECTED_LOCAL))
-				return 1;
+			args.expected_laddr_str = optarg;
 			break;
 		case '1':
 			args.has_expected_raddr = 1;
-			if (convert_addr(&args, optarg,
-					 ADDR_TYPE_EXPECTED_REMOTE))
-				return 1;
-
+			args.expected_raddr_str = optarg;
 			break;
 		case '2':
 			args.expected_dev = optarg;
@@ -1786,12 +1811,13 @@  int main(int argc, char *argv[])
 	}
 
 	if (args.password &&
-	    ((!args.has_remote_ip && !args.prefix_len) || args.type != SOCK_STREAM)) {
+	    ((!args.has_remote_ip && !args.md5_prefix_str) ||
+	      args.type != SOCK_STREAM)) {
 		log_error("MD5 passwords apply to TCP only and require a remote ip for the password\n");
 		return 1;
 	}
 
-	if (args.prefix_len && !args.password) {
+	if (args.md5_prefix_str && !args.password) {
 		log_error("Prefix range for MD5 protection specified without a password\n");
 		return 1;
 	}