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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /toolkit/crashreporter/google-breakpad/src/common/mac/MachIPC.mm | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/mac/MachIPC.mm')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/mac/MachIPC.mm | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/mac/MachIPC.mm b/toolkit/crashreporter/google-breakpad/src/common/mac/MachIPC.mm new file mode 100644 index 0000000000..dc9773f77a --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/common/mac/MachIPC.mm @@ -0,0 +1,306 @@ +// Copyright (c) 2007, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +// MachIPC.mm +// Wrapper for mach IPC calls + +#import <stdio.h> +#import "MachIPC.h" +#include "common/mac/bootstrap_compat.h" + +namespace google_breakpad { +//============================================================================== +MachSendMessage::MachSendMessage(int32_t message_id) : MachMessage() { + head.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0); + + // head.msgh_remote_port = ...; // filled out in MachPortSender::SendMessage() + head.msgh_local_port = MACH_PORT_NULL; + head.msgh_reserved = 0; + head.msgh_id = 0; + + SetDescriptorCount(0); // start out with no descriptors + + SetMessageID(message_id); + SetData(NULL, 0); // client may add data later +} + +//============================================================================== +// returns true if successful +bool MachMessage::SetData(void *data, + int32_t data_length) { + // first check to make sure we have enough space + size_t size = CalculateSize(); + size_t new_size = size + data_length; + + if (new_size > sizeof(MachMessage)) { + return false; // not enough space + } + + GetDataPacket()->data_length = EndianU32_NtoL(data_length); + if (data) memcpy(GetDataPacket()->data, data, data_length); + + CalculateSize(); + + return true; +} + +//============================================================================== +// calculates and returns the total size of the message +// Currently, the entire message MUST fit inside of the MachMessage +// messsage size <= sizeof(MachMessage) +mach_msg_size_t MachMessage::CalculateSize() { + size_t size = sizeof(mach_msg_header_t) + sizeof(mach_msg_body_t); + + // add space for MessageDataPacket + int32_t alignedDataLength = (GetDataLength() + 3) & ~0x3; + size += 2*sizeof(int32_t) + alignedDataLength; + + // add space for descriptors + size += GetDescriptorCount() * sizeof(MachMsgPortDescriptor); + + head.msgh_size = static_cast<mach_msg_size_t>(size); + + return head.msgh_size; +} + +//============================================================================== +MachMessage::MessageDataPacket *MachMessage::GetDataPacket() { + size_t desc_size = sizeof(MachMsgPortDescriptor)*GetDescriptorCount(); + MessageDataPacket *packet = + reinterpret_cast<MessageDataPacket*>(padding + desc_size); + + return packet; +} + +//============================================================================== +void MachMessage::SetDescriptor(int n, + const MachMsgPortDescriptor &desc) { + MachMsgPortDescriptor *desc_array = + reinterpret_cast<MachMsgPortDescriptor*>(padding); + desc_array[n] = desc; +} + +//============================================================================== +// returns true if successful otherwise there was not enough space +bool MachMessage::AddDescriptor(const MachMsgPortDescriptor &desc) { + // first check to make sure we have enough space + int size = CalculateSize(); + size_t new_size = size + sizeof(MachMsgPortDescriptor); + + if (new_size > sizeof(MachMessage)) { + return false; // not enough space + } + + // unfortunately, we need to move the data to allow space for the + // new descriptor + u_int8_t *p = reinterpret_cast<u_int8_t*>(GetDataPacket()); + bcopy(p, p+sizeof(MachMsgPortDescriptor), GetDataLength()+2*sizeof(int32_t)); + + SetDescriptor(GetDescriptorCount(), desc); + SetDescriptorCount(GetDescriptorCount() + 1); + + CalculateSize(); + + return true; +} + +//============================================================================== +void MachMessage::SetDescriptorCount(int n) { + body.msgh_descriptor_count = n; + + if (n > 0) { + head.msgh_bits |= MACH_MSGH_BITS_COMPLEX; + } else { + head.msgh_bits &= ~MACH_MSGH_BITS_COMPLEX; + } +} + +//============================================================================== +MachMsgPortDescriptor *MachMessage::GetDescriptor(int n) { + if (n < GetDescriptorCount()) { + MachMsgPortDescriptor *desc = + reinterpret_cast<MachMsgPortDescriptor*>(padding); + return desc + n; + } + + return nil; +} + +//============================================================================== +mach_port_t MachMessage::GetTranslatedPort(int n) { + if (n < GetDescriptorCount()) { + return GetDescriptor(n)->GetMachPort(); + } + return MACH_PORT_NULL; +} + +#pragma mark - + +//============================================================================== +// create a new mach port for receiving messages and register a name for it +ReceivePort::ReceivePort(const char *receive_port_name) { + mach_port_t current_task = mach_task_self(); + + init_result_ = mach_port_allocate(current_task, + MACH_PORT_RIGHT_RECEIVE, + &port_); + + if (init_result_ != KERN_SUCCESS) + return; + + init_result_ = mach_port_insert_right(current_task, + port_, + port_, + MACH_MSG_TYPE_MAKE_SEND); + + if (init_result_ != KERN_SUCCESS) + return; + + mach_port_t task_bootstrap_port = 0; + init_result_ = task_get_bootstrap_port(current_task, &task_bootstrap_port); + + if (init_result_ != KERN_SUCCESS) + return; + + init_result_ = breakpad::BootstrapRegister( + bootstrap_port, + const_cast<char*>(receive_port_name), + port_); +} + +//============================================================================== +// create a new mach port for receiving messages +ReceivePort::ReceivePort() { + mach_port_t current_task = mach_task_self(); + + init_result_ = mach_port_allocate(current_task, + MACH_PORT_RIGHT_RECEIVE, + &port_); + + if (init_result_ != KERN_SUCCESS) + return; + + init_result_ = mach_port_insert_right(current_task, + port_, + port_, + MACH_MSG_TYPE_MAKE_SEND); +} + +//============================================================================== +// Given an already existing mach port, use it. We take ownership of the +// port and deallocate it in our destructor. +ReceivePort::ReceivePort(mach_port_t receive_port) + : port_(receive_port), + init_result_(KERN_SUCCESS) { +} + +//============================================================================== +ReceivePort::~ReceivePort() { + if (init_result_ == KERN_SUCCESS) + mach_port_deallocate(mach_task_self(), port_); +} + +//============================================================================== +kern_return_t ReceivePort::WaitForMessage(MachReceiveMessage *out_message, + mach_msg_timeout_t timeout) { + if (!out_message) { + return KERN_INVALID_ARGUMENT; + } + + // return any error condition encountered in constructor + if (init_result_ != KERN_SUCCESS) + return init_result_; + + out_message->head.msgh_bits = 0; + out_message->head.msgh_local_port = port_; + out_message->head.msgh_remote_port = MACH_PORT_NULL; + out_message->head.msgh_reserved = 0; + out_message->head.msgh_id = 0; + + mach_msg_option_t options = MACH_RCV_MSG; + if (timeout != MACH_MSG_TIMEOUT_NONE) + options |= MACH_RCV_TIMEOUT; + kern_return_t result = mach_msg(&out_message->head, + options, + 0, + sizeof(MachMessage), + port_, + timeout, // timeout in ms + MACH_PORT_NULL); + + return result; +} + +#pragma mark - + +//============================================================================== +// get a port with send rights corresponding to a named registered service +MachPortSender::MachPortSender(const char *receive_port_name) { + mach_port_t task_bootstrap_port = 0; + init_result_ = task_get_bootstrap_port(mach_task_self(), + &task_bootstrap_port); + + if (init_result_ != KERN_SUCCESS) + return; + + init_result_ = bootstrap_look_up(task_bootstrap_port, + const_cast<char*>(receive_port_name), + &send_port_); +} + +//============================================================================== +MachPortSender::MachPortSender(mach_port_t send_port) + : send_port_(send_port), + init_result_(KERN_SUCCESS) { +} + +//============================================================================== +kern_return_t MachPortSender::SendMessage(MachSendMessage &message, + mach_msg_timeout_t timeout) { + if (message.head.msgh_size == 0) { + return KERN_INVALID_VALUE; // just for safety -- never should occur + }; + + if (init_result_ != KERN_SUCCESS) + return init_result_; + + message.head.msgh_remote_port = send_port_; + + kern_return_t result = mach_msg(&message.head, + MACH_SEND_MSG | MACH_SEND_TIMEOUT, + message.head.msgh_size, + 0, + MACH_PORT_NULL, + timeout, // timeout in ms + MACH_PORT_NULL); + + return result; +} + +} // namespace google_breakpad |