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fix(github-actions): ensure that the artifacts provided for preview service are not symlinks #2468

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fix(github-actions): ensure that the artifacts provided for preview service are not symlinks #2468

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7 changes: 6 additions & 1 deletion github-actions/previews/upload-artifacts-to-firebase/extract-artifact-metadata.js
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Original file line number Diff line number Diff line change
Expand Up @@ -19399,7 +19399,12 @@ var artifactMetadata = {
async function main() {
const [artifactDirPath] = process.argv.slice(2);
for (const [key, name] of Object.entries(artifactMetadata)) {
const content = await fs.promises.readFile(path.join(artifactDirPath, name), "utf8");
const expectedPath = path.join(artifactDirPath, name);
const realPath = await fs.promises.realpath(expectedPath);
if (expectedPath !== realPath) {
throw Error(`Value for unsafe-${key} not stored directly in file as expected, instead stored in ${realPath}`);
}
const content = await fs.promises.readFile(expectedPath, "utf8");
const outputName = `unsafe-${key}`;
console.info(`Setting output: ${outputName} = ${content}`);
(0, import_core.setOutput)(outputName, content.trim());
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14 changes: 13 additions & 1 deletion github-actions/previews/upload-artifacts-to-firebase/lib/extract-artifact-metadata.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,19 @@ async function main() {
const [artifactDirPath] = process.argv.slice(2);

for (const [key, name] of Object.entries(artifactMetadata)) {
const content = await fs.promises.readFile(path.join(artifactDirPath, name), 'utf8');
/** The expected path of the artifact */
const expectedPath = path.join(artifactDirPath, name);

// We confirm that the provided artifact path is actually in the expected location instead of pointing somewhere
// else to exfiltrate information.
const realPath = await fs.promises.realpath(expectedPath);
if (expectedPath !== realPath) {
throw Error(
`Value for unsafe-${key} not stored directly in file as expected, instead stored in ${realPath}`,
);
}

const content = await fs.promises.readFile(expectedPath, 'utf8');
const outputName = `unsafe-${key}`;

console.info(`Setting output: ${outputName} = ${content}`);
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