tracer-config.js

"use strict";
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    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
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Object.defineProperty(exports, "__esModule", { value: true });
exports.getCombinedTracerConfig = exports.concatTracerConfigs = exports.getTracerConfigForLanguage = void 0;
const fs = __importStar(require("fs"));
const path = __importStar(require("path"));
const languages_1 = require("./languages");
const util = __importStar(require("./util"));
const CRITICAL_TRACER_VARS = new Set([
    "SEMMLE_PRELOAD_libtrace",
    "SEMMLE_RUNNER",
    "SEMMLE_COPY_EXECUTABLES_ROOT",
    "SEMMLE_DEPTRACE_SOCKET",
    "SEMMLE_JAVA_TOOL_OPTIONS",
]);
async function getTracerConfigForLanguage(codeql, config, language) {
    const env = await codeql.getTracerEnv(util.getCodeQLDatabasePath(config, language));
    const spec = env["ODASA_TRACER_CONFIGURATION"];
    const info = { spec, env: {} };
    // Extract critical tracer variables from the environment
    for (const entry of Object.entries(env)) {
        const key = entry[0];
        const value = entry[1];
        // skip ODASA_TRACER_CONFIGURATION as it is handled separately
        if (key === "ODASA_TRACER_CONFIGURATION") {
            continue;
        }
        // skip undefined values
        if (typeof value === "undefined") {
            continue;
        }
        // Keep variables that do not exist in current environment. In addition always keep
        // critical and CODEQL_ variables
        if (typeof process.env[key] === "undefined" ||
            CRITICAL_TRACER_VARS.has(key) ||
            key.startsWith("CODEQL_")) {
            info.env[key] = value;
        }
    }
    return info;
}
exports.getTracerConfigForLanguage = getTracerConfigForLanguage;
function concatTracerConfigs(tracerConfigs, config, writeBothEnvironments = false) {
    // A tracer config is a map containing additional environment variables and a tracer 'spec' file.
    // A tracer 'spec' file has the following format [log_file, number_of_blocks, blocks_text]
    // Merge the environments
    const env = {};
    let copyExecutables = false;
    let envSize = 0;
    for (const v of Object.values(tracerConfigs)) {
        for (const e of Object.entries(v.env)) {
            const name = e[0];
            const value = e[1];
            // skip SEMMLE_COPY_EXECUTABLES_ROOT as it is handled separately
            if (name === "SEMMLE_COPY_EXECUTABLES_ROOT") {
                copyExecutables = true;
            }
            else if (name in env) {
                if (env[name] !== value) {
                    throw Error(`Incompatible values in environment parameter ${name}: ${env[name]} and ${value}`);
                }
            }
            else {
                env[name] = value;
                envSize += 1;
            }
        }
    }
    // Concatenate spec files into a new spec file
    const languages = Object.keys(tracerConfigs);
    const cppIndex = languages.indexOf("cpp");
    // Make sure cpp is the last language, if it's present since it must be concatenated last
    if (cppIndex !== -1) {
        const lastLang = languages[languages.length - 1];
        languages[languages.length - 1] = languages[cppIndex];
        languages[cppIndex] = lastLang;
    }
    const totalLines = [];
    let totalCount = 0;
    for (const lang of languages) {
        const lines = fs
            .readFileSync(tracerConfigs[lang].spec, "utf8")
            .split(/\r?\n/);
        const count = parseInt(lines[1], 10);
        totalCount += count;
        totalLines.push(...lines.slice(2));
    }
    const newLogFilePath = path.resolve(config.tempDir, "compound-build-tracer.log");
    const spec = path.resolve(config.tempDir, "compound-spec");
    const compoundTempFolder = path.resolve(config.tempDir, "compound-temp");
    const newSpecContent = [
        newLogFilePath,
        totalCount.toString(10),
        ...totalLines,
    ];
    if (copyExecutables) {
        env["SEMMLE_COPY_EXECUTABLES_ROOT"] = compoundTempFolder;
        envSize += 1;
    }
    fs.writeFileSync(spec, newSpecContent.join("\n"));
    if (writeBothEnvironments || process.platform !== "win32") {
        // Prepare the content of the compound environment file on Unix
        let buffer = Buffer.alloc(4);
        buffer.writeInt32LE(envSize, 0);
        for (const e of Object.entries(env)) {
            const key = e[0];
            const value = e[1];
            const lineBuffer = Buffer.from(`${key}=${value}\0`, "utf8");
            const sizeBuffer = Buffer.alloc(4);
            sizeBuffer.writeInt32LE(lineBuffer.length, 0);
            buffer = Buffer.concat([buffer, sizeBuffer, lineBuffer]);
        }
        // Write the compound environment for Unix
        const envPath = `${spec}.environment`;
        fs.writeFileSync(envPath, buffer);
    }
    if (writeBothEnvironments || process.platform === "win32") {
        // Prepare the content of the compound environment file on Windows
        let bufferWindows = Buffer.alloc(0);
        let length = 0;
        for (const e of Object.entries(env)) {
            const key = e[0];
            const value = e[1];
            const string = `${key}=${value}\0`;
            length += string.length;
            const lineBuffer = Buffer.from(string, "utf16le");
            bufferWindows = Buffer.concat([bufferWindows, lineBuffer]);
        }
        const sizeBuffer = Buffer.alloc(4);
        sizeBuffer.writeInt32LE(length + 1, 0); // Add one for trailing null character marking end
        const trailingNull = Buffer.from(`\0`, "utf16le");
        bufferWindows = Buffer.concat([sizeBuffer, bufferWindows, trailingNull]);
        // Write the compound environment for Windows
        const envPathWindows = `${spec}.win32env`;
        fs.writeFileSync(envPathWindows, bufferWindows);
    }
    return { env, spec };
}
exports.concatTracerConfigs = concatTracerConfigs;
async function getCombinedTracerConfig(config, codeql) {
    // Abort if there are no traced languages as there's nothing to do
    const tracedLanguages = config.languages.filter(languages_1.isTracedLanguage);
    if (tracedLanguages.length === 0) {
        return undefined;
    }
    // Get all the tracer configs and combine them together
    const tracedLanguageConfigs = {};
    for (const language of tracedLanguages) {
        tracedLanguageConfigs[language] = await getTracerConfigForLanguage(codeql, config, language);
    }
    const mainTracerConfig = concatTracerConfigs(tracedLanguageConfigs, config);
    // Add a couple more variables
    mainTracerConfig.env["ODASA_TRACER_CONFIGURATION"] = mainTracerConfig.spec;
    const codeQLDir = path.dirname(codeql.getPath());
    if (process.platform === "darwin") {
        mainTracerConfig.env["DYLD_INSERT_LIBRARIES"] = path.join(codeQLDir, "tools", "osx64", "libtrace.dylib");
    }
    else if (process.platform !== "win32") {
        mainTracerConfig.env["LD_PRELOAD"] = path.join(codeQLDir, "tools", "linux64", "${LIB}trace.so");
    }
    // On macos it's necessary to prefix the build command with the runner executable
    // on order to trace when System Integrity Protection is enabled.
    // The executable also exists and works for other platforms so we output this env
    // var with a path to the runner regardless so it's always available.
    const runnerExeName = process.platform === "win32" ? "runner.exe" : "runner";
    mainTracerConfig.env["CODEQL_RUNNER"] = path.join(mainTracerConfig.env["CODEQL_DIST"], "tools", mainTracerConfig.env["CODEQL_PLATFORM"], runnerExeName);
    return mainTracerConfig;
}
exports.getCombinedTracerConfig = getCombinedTracerConfig;
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