mirror of
https://github.com/mumble-voip/mumble.git
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27dbee8e62
This commit introduces a new plugin framework into the codebase of the Mumble client. Note that "plugin" here really refers to a (more or less) general purpose plugin and is therefore not to be confused with the previously available positional data plugins (only responsible for fetching positional data from a running game and passing that to Mumble). The plugin interface is written in C, removing the compiler-dependence the old "plugins" had. Instead plugins can now be written in an arbitrary language as long as that language is capable of being compiled into a shared library and also being capable of being C-compatible. As already indicated a plugin is essentially a shared library that provides certain functions that allow Mumble to interface with it. Inside Mumble the so-called PluginManager is responsible for managing the plugins and relaying events to the respective callbacks. Plugins themselves can also interact with Mumble on their own initiative by using the provided API functions. Fixes #2455 Fixes #2148 Fixes #1594 Fixes #2051 Fixes #3742 Fixes #4575 Fixes #4751
89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
// Copyright 2020-2021 The Mumble Developers. All rights reserved.
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// Use of this source code is governed by a BSD-style license
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// that can be found in the LICENSE file at the root of the
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// Mumble source tree or at <https://www.mumble.info/LICENSE>.
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#include "ProcessWindows.h"
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#include "mumble_positional_audio_win32_internals.h"
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ProcessWindows::ProcessWindows(const procid_t id, const std::string &name) : Process(id, name) {
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const auto mods = modules();
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const auto iter = mods.find(name);
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if (iter == mods.cend()) {
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return;
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}
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const auto address = iter->second.baseAddress();
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if (!address) {
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return;
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}
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const auto dos = peek< ImageDosHeader >(address);
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if (!(dos.magic[0] == 'M' && dos.magic[1] == 'Z')) {
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return;
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}
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const auto nt = peek< ImageNtHeadersNoOptional >(address + dos.addressOfNtHeader);
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if (!(nt.signature[0] == 'P' && nt.signature[1] == 'E' && nt.signature[2] == '\0' && nt.signature[3] == '\0')) {
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return;
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}
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switch (nt.fileHeader.machine) {
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case 0x14c: // IMAGE_FILE_MACHINE_I386
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m_pointerSize = 4;
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break;
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default:
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m_pointerSize = 8;
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}
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m_ok = true;
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}
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ProcessWindows::~ProcessWindows() {
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}
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template< typename ImageNtHeaders >
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static procptr_t exportedSymbol(const Process &proc, const std::string &symbol, const procptr_t module) {
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const auto dos = proc.peek< ImageDosHeader >(module);
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if (!(dos.magic[0] == 'M' && dos.magic[1] == 'Z')) {
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return 0;
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}
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const auto nt = proc.peek< ImageNtHeaders >(module + dos.addressOfNtHeader);
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if (!(nt.signature[0] == 'P' && nt.signature[1] == 'E' && nt.signature[2] == '\0' && nt.signature[3] == '\0')) {
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return 0;
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}
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const auto dataAddress = nt.optionalHeader.dataDirectory[0].virtualAddress;
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if (!dataAddress) {
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return 0;
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}
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const auto exportDir = proc.peek< ImageExportDirectory >(module + dataAddress);
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const auto funcs = proc.peekVector< uint32_t >(module + exportDir.addressOfFunctions, exportDir.numberOfFunctions);
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const auto names = proc.peekVector< uint32_t >(module + exportDir.addressOfNames, exportDir.numberOfNames);
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const auto ords = proc.peekVector< uint16_t >(module + exportDir.addressOfNameOrdinals, exportDir.numberOfNames);
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for (uint32_t i = 0; i < exportDir.numberOfNames; ++i) {
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if (names[i]) {
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const auto name = proc.peekString(module + names[i], symbol.size());
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if (name == symbol) {
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return module + funcs[ords[i]];
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}
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}
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}
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return 0;
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}
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procptr_t ProcessWindows::exportedSymbol(const std::string &symbol, const procptr_t module) const {
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if (m_pointerSize > 4) {
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return ::exportedSymbol< ImageNtHeaders64 >(*this, symbol, module);
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} else {
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return ::exportedSymbol< ImageNtHeaders32 >(*this, symbol, module);
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}
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}
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