X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/ce3c8656732c924baf7e88df75eab50891bdc471..fa7225c82381bac4432a6edf16f53b5370238d85:/OSX/libsecurity_translocate/lib/SecTranslocateClient.cpp?ds=sidebyside

diff --git a/OSX/libsecurity_translocate/lib/SecTranslocateClient.cpp b/OSX/libsecurity_translocate/lib/SecTranslocateClient.cpp
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+++ b/OSX/libsecurity_translocate/lib/SecTranslocateClient.cpp
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+/*
+ * Copyright (c) 2016 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <string>
+
+#include <dispatch/dispatch.h>
+#include <xpc/xpc.h>
+#include <unistd.h>
+
+#include <security_utilities/unix++.h>
+#include <security_utilities/logging.h>
+
+#include "SecTranslocateClient.hpp"
+#include "SecTranslocateShared.hpp"
+#include "SecTranslocateInterface.hpp"
+
+namespace Security {
+
+namespace SecTranslocate {
+
+using namespace std;
+
+TranslocatorClient::TranslocatorClient(dispatch_queue_t q):syncQ(q)
+{
+    if(syncQ == NULL)
+    {
+        Syslog::critical("SecTranslocate::TranslocatorClient initialized without a queue.");
+        UnixError::throwMe(EINVAL);
+    }
+
+    uint64_t flags = 0;
+    uid_t euid = geteuid();
+
+    /* 0 - is root so it gets the root lsd
+       1-300 = are treated by launch services as "role users" They share a copy of the LS Database with root
+               and thus must be sent to the root lsd. */
+    if (euid <= 300)
+    {
+        flags |= XPC_CONNECTION_MACH_SERVICE_PRIVILEGED; //forces call to the root lsd
+    }
+
+    service = xpc_connection_create_mach_service(SECTRANSLOCATE_XPC_SERVICE_NAME,
+                                                 syncQ,
+                                                 flags);
+    if (service == NULL)
+    {
+        Syslog::critical("SecTranslocate: TranslocatorClient, failed to create xpc mach service");
+        UnixError::throwMe(ENOMEM);
+    }
+    xpc_connection_set_event_handler(service, ^(xpc_object_t event) {
+        xpc_type_t type = xpc_get_type(event);
+        if (type == XPC_TYPE_ERROR)
+        {
+            Syslog::error("SecTranslocate, client, xpc error: %s", xpc_dictionary_get_string(event, XPC_ERROR_KEY_DESCRIPTION));
+        }
+        else
+        {
+            char* description = xpc_copy_description(event);
+            Syslog::error("SecTranslocate, client, xpc unexpected type: %s", description);
+            free(description);
+        }
+    });
+
+    dispatch_retain(syncQ);
+    xpc_connection_resume(service);
+}
+
+TranslocatorClient::~TranslocatorClient()
+{
+    xpc_connection_cancel(service);
+    dispatch_release(syncQ);
+}
+
+string TranslocatorClient::translocatePathForUser(const TranslocationPath &originalPath, const string &destPath)
+{
+    string outPath;
+
+    if (!originalPath.shouldTranslocate())
+    {
+        return originalPath.getOriginalRealPath();  //return original path if we shouldn't translocate
+    }
+
+    //We should run translocated, so get a translocation point
+    xpc_object_t msg = xpc_dictionary_create(NULL, NULL, 0);
+
+    if( msg == NULL)
+    {
+        Syslog::error("SecTranslocate: TranslocatorClient, failed to allocate message to send");
+        UnixError::throwMe(ENOMEM);
+    }
+
+    xpc_dictionary_set_string(msg, kSecTranslocateXPCMessageFunction, kSecTranslocateXPCFuncCreate);
+    /* send the original real path rather than the calculated path to let the server do all the work */
+    xpc_dictionary_set_string(msg, kSecTranslocateXPCMessageOriginalPath, originalPath.getOriginalRealPath().c_str());
+    if(!destPath.empty())
+    {
+        xpc_dictionary_set_string(msg, kSecTranslocateXPCMessageDestinationPath, destPath.c_str());
+    }
+
+    xpc_object_t reply = xpc_connection_send_message_with_reply_sync(service, msg);
+    xpc_release(msg);
+
+    if(reply == NULL)
+    {
+        Syslog::error("SecTranslocate, TranslocatorClient, create, no reply returned");
+        UnixError::throwMe(ENOMEM);
+    }
+
+    xpc_type_t type = xpc_get_type(reply);
+    if (type == XPC_TYPE_DICTIONARY)
+    {
+        if(int64_t error = xpc_dictionary_get_int64(reply, kSecTranslocateXPCReplyError))
+        {
+            Syslog::error("SecTranslocate, TranslocatorClient, create, error received %lld", error);
+            xpc_release(reply);
+            UnixError::throwMe((int)error);
+        }
+        const char * result = xpc_dictionary_get_string(reply, kSecTranslocateXPCReplySecurePath);
+        if (result == NULL)
+        {
+            Syslog::error("SecTranslocate, TranslocatorClient, create, no result path received");
+            xpc_release(reply);
+            UnixError::throwMe(EINVAL);
+        }
+        outPath=result;
+        xpc_release(reply);
+    }
+    else
+    {
+        const char* errorMsg = NULL;
+        if (type == XPC_TYPE_ERROR)
+        {
+            errorMsg = "SecTranslocate, TranslocatorClient, create, xpc error returned: %s";
+        }
+        else
+        {
+            errorMsg = "SecTranslocate, TranslocatorClient, create, unexpected type of return object: %s";
+        }
+        const char *s = xpc_copy_description(reply);
+        Syslog::error(errorMsg, s);
+        free((char*)s);
+        xpc_release(reply);
+        UnixError::throwMe(EINVAL);
+    }
+
+    return outPath;
+}
+
+void TranslocatorClient::appLaunchCheckin(pid_t pid)
+{
+    xpc_object_t msg = xpc_dictionary_create(NULL, NULL, 0);
+
+    xpc_dictionary_set_string(msg, kSecTranslocateXPCMessageFunction, kSecTranslocateXPCFuncCheckIn);
+    xpc_dictionary_set_int64(msg, kSecTranslocateXPCMessagePid, pid);
+
+    /* no reply expected so just send the message and move along */
+    xpc_connection_send_message(service, msg);
+
+    xpc_release(msg);
+}
+
+bool TranslocatorClient::destroyTranslocatedPathForUser(const string &translocatedPath)
+{
+    Syslog::error("SecTranslocate, TranslocatorClient, delete operation not allowed");
+    UnixError::throwMe(EPERM);
+    return false;
+}
+
+} //namespace SecTranslocate
+} //namespace Security