Merge pull request #91 from sean-jc/docker/merge

Add support for running the AESM and SGX applications in Docker

linux/installer/common/psw/install.sh

@@ -54,6 +54,15 @@ chmod  0644 /etc/aesmd.conf
 chown -R aesmd /var/opt/aesmd
 chmod 0750 /var/opt/aesmd
 
+# By default the AESM's communication socket will be created in
+# /var/run/aesmd.  Putting the socket in the aesmd sub-directory
+# as opposed to directly in /var/run allows the user to create a
+# mount a volume at /var/run/aesmd and thus expose the socket to
+# a different filesystem or namespace, e.g. a Docker container.
+mkdir -p /var/run/aesmd
+chown -R aesmd /var/run/aesmd
+chmod 0755 /var/run/aesmd
+
 if [ -d /run/systemd/system ]; then
     AESMD_NAME=aesmd.service
     AESMD_TEMP=$AESM_PATH/$AESMD_NAME
@@ -112,8 +121,9 @@ $DISABLE_AESMD
 rm -f $AESMD_DEST
 rm -f /etc/aesmd.conf
 
-# Removing AESM internal folder
+# Removing AESM internal folders
 rm -fr /var/opt/aesmd
+rm -fr /var/run/aesmd
 
 # Removing runtime libraries
 rm -f /usr/lib/libsgx_uae_service.so

psw/ae/aesm_service/source/aesm/application/main.cpp

@@ -73,8 +73,16 @@ void signal_handler(int sig)
     }
 }
 
-int main() {
-    if(daemon(0, 0) < 0)
+int main(int argc, char *argv[]) {
+    // The only command line option that is supported is --no-daemon.
+    bool noDaemon = argc == 2 && (strcmp(argv[1], "--no-daemon") == 0);
+    if ((argc > 2) || (argc == 2 && !noDaemon)) {
+        AESM_LOG_INIT();
+        AESM_LOG_FATAL("Invalid command line.");
+        AESM_LOG_FINI();
+        exit(1);
+    }
+    if(!noDaemon && daemon(0, 0) < 0)
     {
         AESM_LOG_INIT();
         AESM_LOG_FATAL("Fail to set daemon.");

psw/ae/aesm_service/source/aesm_wrapper/src/UnixServerSocket.cpp

@@ -30,6 +30,7 @@
  */
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
 #include <sys/un.h>
 #include <unistd.h>
 #include <errno.h>
@@ -45,8 +46,10 @@ UnixServerSocket::UnixServerSocket(const char* socketbase, const unsigned int cl
 }
 
 UnixServerSocket::~UnixServerSocket() {
-    if (mSocket > 0)
+    if (mSocket > 0) {
+        unlink(mSocketBase);
         close(mSocket);
+    }
 }
 
 void UnixServerSocket::init()
@@ -64,8 +67,7 @@ void UnixServerSocket::init()
 
     server_address.sun_family = AF_UNIX;
     memset(server_address.sun_path, 0, sizeof(server_address.sun_path));
-    // leave the first byte to 0 in order to have an abstract socket address
-    strncpy(server_address.sun_path + 1, mSocketBase, sizeof(server_address.sun_path) - 1);
+    strncpy(server_address.sun_path, mSocketBase, sizeof(server_address.sun_path));
     unlink(server_address.sun_path);
 
     socklen_t server_len = sizeof(server_address);
@@ -75,6 +77,8 @@ void UnixServerSocket::init()
         throw("Failed to create socket");
     }
 
+    chmod(mSocketBase, 0777);
+
     rc = listen(mSocket, 32);
     if (rc < 0) {
         close(mSocket);

psw/ae/common/inc/SocketConfig.h

@@ -33,7 +33,7 @@
 
 
 #ifndef CONFIG_SOCKET_PATH
-    #define CONFIG_SOCKET_PATH "sgx_aesm_socket_base"
+    #define CONFIG_SOCKET_PATH "/var/run/aesmd/aesm.socket"
 #endif /* CONFIG_SOCKET_PATH */
 
 #endif

psw/ae/common/src/UnixCommunicationSocket.cpp

@@ -208,8 +208,7 @@ bool UnixCommunicationSocket::init()
         memset(&serv_addr, 0, sizeof(struct sockaddr_un));
         serv_addr.sun_family = AF_UNIX;
         memset(serv_addr.sun_path, 0, sizeof(serv_addr.sun_path));
-        // leave the first byte to 0 in order to have an abstract socket address
-        strncpy(serv_addr.sun_path + 1, mSocketBase, sizeof(serv_addr.sun_path) - 1);
+        strncpy(serv_addr.sun_path, mSocketBase, sizeof(serv_addr.sun_path));
 
         if( connect(mSocket, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) != 0)
         {