Files
claude-code-action/src/entrypoints/collect-inputs.ts
Ashwin Bhat 7e4bf87b1c feat: add ssh_signing_key input for SSH commit signing (#784)
* feat: add ssh_signing_key input for SSH commit signing

Add a new ssh_signing_key input that allows passing an SSH signing key
for commit signing, as an alternative to the existing use_commit_signing
(which uses GitHub API-based commits).

When ssh_signing_key is provided:
- Git is configured to use SSH signing (gpg.format=ssh, commit.gpgsign=true)
- The key is written to ~/.ssh/claude_signing_key with 0600 permissions
- Git CLI commands are used (not MCP file ops)
- The key is cleaned up in a post step for security

Behavior matrix:
| ssh_signing_key | use_commit_signing | Result |
|-----------------|-------------------|--------|
| not set         | false             | Regular git, no signing |
| not set         | true              | GitHub API (MCP), verified commits |
| set             | false             | Git CLI with SSH signing |
| set             | true              | Git CLI with SSH signing (ssh_signing_key takes precedence)

* docs: add SSH signing key documentation

- Update security.md with detailed setup instructions for both signing options
- Explain that ssh_signing_key enables full git CLI operations (rebasing, etc.)
- Add ssh_signing_key to inputs table in usage.md
- Update bot_id/bot_name descriptions to note they're needed for verified commits

* fix: address security review feedback for SSH signing

- Write SSH key atomically with mode 0o600 (fixes TOCTOU race condition)
- Create .ssh directory with mode 0o700 (SSH best practices)
- Add input validation for SSH key format
- Remove unused chmod import
- Add tests for validation logic
2026-01-02 10:37:25 -08:00

59 lines
1.5 KiB
TypeScript

import * as core from "@actions/core";
export function collectActionInputsPresence(): void {
const inputDefaults: Record<string, string> = {
trigger_phrase: "@claude",
assignee_trigger: "",
label_trigger: "claude",
base_branch: "",
branch_prefix: "claude/",
allowed_bots: "",
mode: "tag",
model: "",
anthropic_model: "",
fallback_model: "",
allowed_tools: "",
disallowed_tools: "",
custom_instructions: "",
direct_prompt: "",
override_prompt: "",
additional_permissions: "",
claude_env: "",
settings: "",
anthropic_api_key: "",
claude_code_oauth_token: "",
github_token: "",
max_turns: "",
use_sticky_comment: "false",
use_commit_signing: "false",
ssh_signing_key: "",
};
const allInputsJson = process.env.ALL_INPUTS;
if (!allInputsJson) {
console.log("ALL_INPUTS environment variable not found");
core.setOutput("action_inputs_present", JSON.stringify({}));
return;
}
let allInputs: Record<string, string>;
try {
allInputs = JSON.parse(allInputsJson);
} catch (e) {
console.error("Failed to parse ALL_INPUTS JSON:", e);
core.setOutput("action_inputs_present", JSON.stringify({}));
return;
}
const presentInputs: Record<string, boolean> = {};
for (const [name, defaultValue] of Object.entries(inputDefaults)) {
const actualValue = allInputs[name] || "";
const isSet = actualValue !== defaultValue;
presentInputs[name] = isSet;
}
core.setOutput("action_inputs_present", JSON.stringify(presentInputs));
}