refactor(gateway): share safe avatar file open checks

This commit is contained in:
Peter Steinberger
2026-02-22 23:12:31 +01:00
parent 7b229decdd
commit 13db0b88f5
3 changed files with 99 additions and 82 deletions

View File

@@ -21,6 +21,7 @@ import {
type SessionEntry,
type SessionScope,
} from "../config/sessions.js";
import { openVerifiedFileSync } from "../infra/safe-open-sync.js";
import {
normalizeAgentId,
normalizeMainKey,
@@ -75,10 +76,6 @@ function tryResolveExistingPath(value: string): string | null {
}
}
function areSameFileIdentity(preOpen: fs.Stats, opened: fs.Stats): boolean {
return preOpen.dev === opened.dev && preOpen.ino === opened.ino;
}
function resolveIdentityAvatarUrl(
cfg: OpenClawConfig,
agentId: string,
@@ -103,37 +100,28 @@ function resolveIdentityAvatarUrl(
if (!isPathWithinRoot(workspaceRoot, resolvedCandidate)) {
return undefined;
}
let fd: number | null = null;
try {
const resolvedReal = fs.realpathSync(resolvedCandidate);
if (!isPathWithinRoot(workspaceRoot, resolvedReal)) {
return undefined;
}
const preOpenStat = fs.lstatSync(resolvedReal);
if (!preOpenStat.isFile() || preOpenStat.size > AVATAR_MAX_BYTES) {
const opened = openVerifiedFileSync({
filePath: resolvedReal,
resolvedPath: resolvedReal,
maxBytes: AVATAR_MAX_BYTES,
});
if (!opened.ok) {
return undefined;
}
const openFlags =
fs.constants.O_RDONLY |
(typeof fs.constants.O_NOFOLLOW === "number" ? fs.constants.O_NOFOLLOW : 0);
fd = fs.openSync(resolvedReal, openFlags);
const openedStat = fs.fstatSync(fd);
if (
!openedStat.isFile() ||
openedStat.size > AVATAR_MAX_BYTES ||
!areSameFileIdentity(preOpenStat, openedStat)
) {
return undefined;
try {
const buffer = fs.readFileSync(opened.fd);
const mime = resolveAvatarMime(resolvedCandidate);
return `data:${mime};base64,${buffer.toString("base64")}`;
} finally {
fs.closeSync(opened.fd);
}
const buffer = fs.readFileSync(fd);
const mime = resolveAvatarMime(resolvedCandidate);
return `data:${mime};base64,${buffer.toString("base64")}`;
} catch {
return undefined;
} finally {
if (fd !== null) {
fs.closeSync(fd);
}
}
}