fix(auto-reply): prevent sender spoofing in group prompts

This commit is contained in:
Peter Steinberger
2026-02-10 00:35:56 -06:00
parent 8ff1618bfc
commit 53273b490b
42 changed files with 405 additions and 243 deletions

View File

@@ -39,6 +39,7 @@ import { SILENT_REPLY_TOKEN } from "../tokens.js";
import { runReplyAgent } from "./agent-runner.js";
import { applySessionHints } from "./body.js";
import { buildGroupIntro } from "./groups.js";
import { buildInboundMetaSystemPrompt, buildInboundUserContextPrefix } from "./inbound-meta.js";
import { resolveQueueSettings } from "./queue.js";
import { routeReply } from "./route-reply.js";
import { ensureSkillSnapshot, prependSystemEvents } from "./session-updates.js";
@@ -181,7 +182,12 @@ export async function runPreparedReply(
})
: "";
const groupSystemPrompt = sessionCtx.GroupSystemPrompt?.trim() ?? "";
const extraSystemPrompt = [groupIntro, groupSystemPrompt].filter(Boolean).join("\n\n");
const inboundMetaPrompt = buildInboundMetaSystemPrompt(
isNewSession ? sessionCtx : { ...sessionCtx, ThreadStarterBody: undefined },
);
const extraSystemPrompt = [inboundMetaPrompt, groupIntro, groupSystemPrompt]
.filter(Boolean)
.join("\n\n");
const baseBody = sessionCtx.BodyStripped ?? sessionCtx.Body ?? "";
// Use CommandBody/RawBody for bare reset detection (clean message without structural context).
const rawBodyTrimmed = (ctx.CommandBody ?? ctx.RawBody ?? ctx.Body ?? "").trim();
@@ -200,7 +206,13 @@ export async function runPreparedReply(
isNewSession &&
((baseBodyTrimmedRaw.length === 0 && rawBodyTrimmed.length > 0) || isBareNewOrReset);
const baseBodyFinal = isBareSessionReset ? BARE_SESSION_RESET_PROMPT : baseBody;
const baseBodyTrimmed = baseBodyFinal.trim();
const inboundUserContext = buildInboundUserContextPrefix(
isNewSession ? sessionCtx : { ...sessionCtx, ThreadStarterBody: undefined },
);
const baseBodyForPrompt = isBareSessionReset
? baseBodyFinal
: [inboundUserContext, baseBodyFinal].filter(Boolean).join("\n\n");
const baseBodyTrimmed = baseBodyForPrompt.trim();
if (!baseBodyTrimmed) {
await typing.onReplyStart();
logVerbose("Inbound body empty after normalization; skipping agent run");
@@ -210,14 +222,13 @@ export async function runPreparedReply(
};
}
let prefixedBodyBase = await applySessionHints({
baseBody: baseBodyFinal,
baseBody: baseBodyForPrompt,
abortedLastRun,
sessionEntry,
sessionStore,
sessionKey,
storePath,
abortKey: command.abortKey,
messageId: sessionCtx.MessageSid,
});
const isGroupSession = sessionEntry?.chatType === "group" || sessionEntry?.chatType === "channel";
const isMainSession = !isGroupSession && sessionKey === normalizeMainKey(sessionCfg?.mainKey);
@@ -229,11 +240,6 @@ export async function runPreparedReply(
prefixedBodyBase,
});
prefixedBodyBase = appendUntrustedContext(prefixedBodyBase, sessionCtx.UntrustedContext);
const threadStarterBody = ctx.ThreadStarterBody?.trim();
const threadStarterNote =
isNewSession && threadStarterBody
? `[Thread starter - for context]\n${threadStarterBody}`
: undefined;
const skillResult = await ensureSkillSnapshot({
sessionEntry,
sessionStore,
@@ -248,7 +254,7 @@ export async function runPreparedReply(
sessionEntry = skillResult.sessionEntry ?? sessionEntry;
currentSystemSent = skillResult.systemSent;
const skillsSnapshot = skillResult.skillsSnapshot;
const prefixedBody = [threadStarterNote, prefixedBodyBase].filter(Boolean).join("\n\n");
const prefixedBody = prefixedBodyBase;
const mediaNote = buildInboundMediaNote(ctx);
const mediaReplyHint = mediaNote
? "To send an image back, prefer the message tool (media/path/filePath). If you must inline, use MEDIA:https://example.com/image.jpg (spaces ok, quote if needed) or a safe relative path like MEDIA:./image.jpg. Avoid absolute paths (MEDIA:/...) and ~ paths — they are blocked for security. Keep caption in the text body."
@@ -311,15 +317,10 @@ export async function runPreparedReply(
}
const sessionIdFinal = sessionId ?? crypto.randomUUID();
const sessionFile = resolveSessionFilePath(sessionIdFinal, sessionEntry);
const queueBodyBase = [threadStarterNote, baseBodyFinal].filter(Boolean).join("\n\n");
const queueMessageId = sessionCtx.MessageSid?.trim();
const queueMessageIdHint = queueMessageId ? `[message_id: ${queueMessageId}]` : "";
const queueBodyWithId = queueMessageIdHint
? `${queueBodyBase}\n${queueMessageIdHint}`
: queueBodyBase;
const queueBodyBase = baseBodyForPrompt;
const queuedBody = mediaNote
? [mediaNote, mediaReplyHint, queueBodyWithId].filter(Boolean).join("\n").trim()
: queueBodyWithId;
? [mediaNote, mediaReplyHint, queueBodyBase].filter(Boolean).join("\n").trim()
: queueBodyBase;
const resolvedQueue = resolveQueueSettings({
cfg,
channel: sessionCtx.Provider,