| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "sandbox/mac/os_compatibility.h" |
| |
| #include <servers/bootstrap.h> |
| #include <unistd.h> |
| |
| #include "base/mac/mac_util.h" |
| |
| namespace sandbox { |
| |
| namespace { |
| |
| #pragma pack(push, 4) |
| // Verified from launchd-329.3.3 (10.6.8). |
| struct look_up2_request_10_6 { |
| mach_msg_header_t Head; |
| NDR_record_t NDR; |
| name_t servicename; |
| pid_t targetpid; |
| uint64_t flags; |
| }; |
| |
| struct look_up2_reply_10_6 { |
| mach_msg_header_t Head; |
| mach_msg_body_t msgh_body; |
| mach_msg_port_descriptor_t service_port; |
| }; |
| |
| // Verified from: |
| // launchd-392.39 (10.7.5) |
| // launchd-442.26.2 (10.8.5) |
| // launchd-842.1.4 (10.9.0) |
| struct look_up2_request_10_7 { |
| mach_msg_header_t Head; |
| NDR_record_t NDR; |
| name_t servicename; |
| pid_t targetpid; |
| uuid_t instanceid; |
| uint64_t flags; |
| }; |
| |
| // look_up2_reply_10_7 is the same as the 10_6 version. |
| |
| // Verified from: |
| // launchd-329.3.3 (10.6.8) |
| // launchd-392.39 (10.7.5) |
| // launchd-442.26.2 (10.8.5) |
| // launchd-842.1.4 (10.9.0) |
| typedef int vproc_gsk_t; // Defined as an enum in liblaunch/vproc_priv.h. |
| struct swap_integer_request_10_6 { |
| mach_msg_header_t Head; |
| NDR_record_t NDR; |
| vproc_gsk_t inkey; |
| vproc_gsk_t outkey; |
| int64_t inval; |
| }; |
| #pragma pack(pop) |
| |
| // TODO(rsesek): Libc provides strnlen() starting in 10.7. |
| size_t strnlen(const char* str, size_t maxlen) { |
| size_t len = 0; |
| for (; len < maxlen; ++len, ++str) { |
| if (*str == '\0') |
| break; |
| } |
| return len; |
| } |
| |
| uint64_t MachGetMessageID(const IPCMessage message) { |
| return message.mach->msgh_id; |
| } |
| |
| template <typename R> |
| std::string LaunchdLookUp2GetRequestName(const IPCMessage message) { |
| mach_msg_header_t* header = message.mach; |
| DCHECK_EQ(sizeof(R), header->msgh_size); |
| const R* request = reinterpret_cast<const R*>(header); |
| // Make sure the name is properly NUL-terminated. |
| const size_t name_length = |
| strnlen(request->servicename, BOOTSTRAP_MAX_NAME_LEN); |
| std::string name = std::string(request->servicename, name_length); |
| return name; |
| } |
| |
| template <typename R> |
| void LaunchdLookUp2FillReply(IPCMessage message, mach_port_t port) { |
| R* reply = reinterpret_cast<R*>(message.mach); |
| reply->Head.msgh_size = sizeof(R); |
| reply->Head.msgh_bits = |
| MACH_MSGH_BITS_REMOTE(MACH_MSG_TYPE_MOVE_SEND_ONCE) | |
| MACH_MSGH_BITS_COMPLEX; |
| reply->msgh_body.msgh_descriptor_count = 1; |
| reply->service_port.name = port; |
| reply->service_port.disposition = MACH_MSG_TYPE_COPY_SEND; |
| reply->service_port.type = MACH_MSG_PORT_DESCRIPTOR; |
| } |
| |
| template <typename R> |
| bool LaunchdSwapIntegerIsGetOnly(const IPCMessage message) { |
| const R* request = reinterpret_cast<const R*>(message.mach); |
| return request->inkey == 0 && request->inval == 0 && request->outkey != 0; |
| } |
| |
| } // namespace |
| |
| const LaunchdCompatibilityShim GetLaunchdCompatibilityShim() { |
| LaunchdCompatibilityShim shim = { |
| .ipc_message_get_id = &MachGetMessageID, |
| .msg_id_look_up2 = 404, |
| .msg_id_swap_integer = 416, |
| .look_up2_fill_reply = &LaunchdLookUp2FillReply<look_up2_reply_10_6>, |
| .swap_integer_is_get_only = |
| &LaunchdSwapIntegerIsGetOnly<swap_integer_request_10_6>, |
| }; |
| |
| if (base::mac::IsOSSnowLeopard()) { |
| shim.look_up2_get_request_name = |
| &LaunchdLookUp2GetRequestName<look_up2_request_10_6>; |
| } else if (base::mac::IsOSLionOrLater() && |
| !base::mac::IsOSYosemiteOrLater()) { |
| shim.look_up2_get_request_name = |
| &LaunchdLookUp2GetRequestName<look_up2_request_10_7>; |
| } else { |
| DLOG(ERROR) << "Unknown OS, using launchd compatibility shim from 10.7."; |
| shim.look_up2_get_request_name = |
| &LaunchdLookUp2GetRequestName<look_up2_request_10_7>; |
| } |
| |
| return shim; |
| } |
| |
| } // namespace sandbox |