xnu-4903.241.1.tar.gz

[apple/xnu.git] / security / mac_socket.c

diff --git a/security/mac_socket.c b/security/mac_socket.c
index 45c7daef68b4fa7d0495a3b89590ec7fbaa9ddad..e935f6f78b374d2b10bc2d7497b601a15e04ee9a 100644 (file)
--- a/security/mac_socket.c
+++ b/security/mac_socket.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2007-2012 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -82,12 +82,6 @@
 #include <sys/sysctl.h>
 #include <sys/kpi_socket.h>
 
-#include <net/if.h>
-#include <net/if_var.h>
-
-#include <netinet/in.h>
-#include <netinet/ip_var.h>
-
 #include <security/mac_internal.h>
 
 #if CONFIG_MACF_SOCKET
@@ -219,8 +213,11 @@ mac_socket_label_internalize(struct label *label, char *string)
 void
 mac_socket_label_associate(struct ucred *cred, struct socket *so)
 {
-       if (!mac_socket_enforce)
-               return;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return;
+#endif
 
        MAC_PERFORM(socket_label_associate, cred, 
                    (socket_t)so, so->so_label);
@@ -230,8 +227,11 @@ void
 mac_socket_label_associate_accept(struct socket *oldsocket,
     struct socket *newsocket)
 {
-       if (!mac_socket_enforce)
-               return;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return;
+#endif
 
        MAC_PERFORM(socket_label_associate_accept, 
                    (socket_t)oldsocket, oldsocket->so_label,
@@ -244,8 +244,11 @@ mac_socketpeer_label_associate_mbuf(struct mbuf *mbuf, struct socket *so)
 {
        struct label *label;
 
-       if (!mac_socket_enforce && !mac_net_enforce)
-               return;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce && !mac_net_enforce)
+        return;
+#endif
 
        label = mac_mbuf_to_label(mbuf);
 
@@ -266,8 +269,11 @@ void
 mac_socketpeer_label_associate_socket(struct socket *oldsocket,
     struct socket *newsocket)
 {
-       if (!mac_socket_enforce)
-               return;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return;
+#endif
 
        MAC_PERFORM(socketpeer_label_associate_socket,
                    (socket_t)oldsocket, oldsocket->so_label,
@@ -280,8 +286,11 @@ mac_socket_check_kqfilter(kauth_cred_t cred, struct knote *kn,
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_kqfilter, cred, kn, 
                  (socket_t)so, so->so_label);
@@ -289,54 +298,49 @@ mac_socket_check_kqfilter(kauth_cred_t cred, struct knote *kn,
 }
 
 static int
-mac_socket_check_label_update(kauth_cred_t cred, struct socket *so,
-    struct label *newlabel)
-{
-       int error;
-
-       if (!mac_socket_enforce)
-               return 0;
-
-       MAC_CHECK(socket_check_label_update, cred,
-                 (socket_t)so, so->so_label,
-                 newlabel);
-       return (error);
-}
-
 int
 mac_socket_check_select(kauth_cred_t cred, struct socket *so, int which)
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_select, cred,
                  (socket_t)so, so->so_label, which);
        return (error);
 }
 
-int
-mac_socket_check_stat(kauth_cred_t cred, struct socket *so)
+mac_socket_check_label_update(kauth_cred_t cred, struct socket *so,
+    struct label *newlabel)
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
-       MAC_CHECK(socket_check_stat, cred,
-                 (socket_t)so, so->so_label);
+       MAC_CHECK(socket_check_label_update, cred,
+                 (socket_t)so, so->so_label,
+                 newlabel);
        return (error);
 }
 
-
 int
 mac_socket_label_update(kauth_cred_t cred, struct socket *so, struct label *label)
 {
        int error;
 #if 0
-       if (!mac_socket_enforce)
-               return;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 #endif
        error = mac_socket_check_label_update(cred, so, label);
        if (error)
@@ -463,6 +467,7 @@ mac_socketpeer_label_get(__unused kauth_cred_t cred, struct socket *so,
 
        return (error);
 }
+
 #endif /* MAC_SOCKET */
 
 int
@@ -470,22 +475,29 @@ mac_socket_check_accept(kauth_cred_t cred, struct socket *so)
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_accept, cred,
                  (socket_t)so, so->so_label);
        return (error);
 }
 
+#if CONFIG_MACF_SOCKET_SUBSET
 int
 mac_socket_check_accepted(kauth_cred_t cred, struct socket *so)
 {
        struct sockaddr *sockaddr;
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        if (sock_getaddr((socket_t)so, &sockaddr, 1) != 0) {
                error = ECONNABORTED;
@@ -496,6 +508,7 @@ mac_socket_check_accepted(kauth_cred_t cred, struct socket *so)
        }
        return (error);
 }
+#endif
 
 int
 mac_socket_check_bind(kauth_cred_t ucred, struct socket *so,
@@ -503,8 +516,11 @@ mac_socket_check_bind(kauth_cred_t ucred, struct socket *so,
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_bind, ucred,
                  (socket_t)so, so->so_label, sockaddr);
@@ -517,8 +533,11 @@ mac_socket_check_connect(kauth_cred_t cred, struct socket *so,
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_connect, cred,
                  (socket_t)so, so->so_label,
@@ -531,8 +550,11 @@ mac_socket_check_create(kauth_cred_t cred, int domain, int type, int protocol)
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_create, cred, domain, type, protocol);
        return (error);
@@ -545,8 +567,11 @@ mac_socket_check_deliver(struct socket *so, struct mbuf *mbuf)
        struct label *label;
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        label = mac_mbuf_to_label(mbuf);
 
@@ -564,12 +589,48 @@ mac_socket_check_deliver(__unused struct socket *so, __unused struct mbuf *mbuf)
 #endif
 
 int
-mac_socket_check_listen(kauth_cred_t cred, struct socket *so)
+mac_socket_check_ioctl(kauth_cred_t cred, struct socket *so,
+                      unsigned int cmd)
 {
        int error;
 
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
        if (!mac_socket_enforce)
                return 0;
+#endif
+
+       MAC_CHECK(socket_check_ioctl, cred,
+                 (socket_t)so, cmd, so->so_label);
+       return (error);
+}
+
+int
+mac_socket_check_stat(kauth_cred_t cred, struct socket *so)
+{
+       int error;
+
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
+
+       MAC_CHECK(socket_check_stat, cred,
+                 (socket_t)so, so->so_label);
+       return (error);
+}
+
+int
+mac_socket_check_listen(kauth_cred_t cred, struct socket *so)
+{
+       int error;
+
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_listen, cred,
                  (socket_t)so, so->so_label);
@@ -581,8 +642,11 @@ mac_socket_check_receive(kauth_cred_t cred, struct socket *so)
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_receive, cred,
                  (socket_t)so, so->so_label);
@@ -594,8 +658,11 @@ mac_socket_check_received(kauth_cred_t cred, struct socket *so, struct sockaddr
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
        
        MAC_CHECK(socket_check_received, cred,
                  so, so->so_label, saddr);
@@ -608,8 +675,11 @@ mac_socket_check_send(kauth_cred_t cred, struct socket *so,
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return 0;
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_send, cred,
                  (socket_t)so, so->so_label, sockaddr);
@@ -622,8 +692,11 @@ mac_socket_check_setsockopt(kauth_cred_t cred, struct socket *so,
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_setsockopt, cred,
                  (socket_t)so, so->so_label, sopt);
@@ -635,8 +708,11 @@ int mac_socket_check_getsockopt(kauth_cred_t cred, struct socket *so,
 {
        int error;
 
-       if (!mac_socket_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+    /* 21167099 - only check if we allow write */
+    if (!mac_socket_enforce)
+        return 0;
+#endif
 
        MAC_CHECK(socket_check_getsockopt, cred,
                  (socket_t)so, so->so_label, sopt);