Author SHA1 Message Date
clawbot 015730fb05 Delete .tmp- leftovers of a killed command when the lock is next taken (closes #75)
check / check (push) Waiting to run
A command killed part-way could leave a temporary file or directory of
secret.WriteFileAtomic or secret.TempDirFor, encrypted keys included,
for good. LockStateDir now empties the lock file once it holds the lock
and writes "finished" there just before releasing it. A holder that
does not find that deletes such leftovers from the state directory,
each vault, each secret and each version, the only places those helpers
make them, matching names that start with "." and hold ".tmp-". After a
command that finished nothing is searched, so the added time does not
grow with the number of secrets and versions. A test shows that
`unlocker remove` removes an unlocker directory with no metadata file.

Model: opus-5-5
2026-10-04 19:25:25 +02:00
clawbot 1d7f78fd0d Add the README's required sections and clear stale TODO.md items (closes #46)
check / check (push) Waiting to run
README gains Description, Getting Started, Rationale, Design, TODO and
License sections; its first sentence names the licence and author.
Installation and Quick Start become Getting Started; Core Architecture
becomes Design, whose two false version bullets (symlink switching,
unencrypted metadata) are corrected. README and AGENTS.md are wrapped
to prettier's settings.

TODO.md: Workflow and Next Step point at the 1.0.0 milestone and the
next branch, the old Next Step's four finished items move to Completed
Steps with their dates, and Future Steps loses the items already done.

Model: opus-5-5
2026-10-04 19:25:07 +02:00
10 changed files with 626 additions and 302 deletions
+104 -98
View File
@@ -4,154 +4,160 @@ Version: 2025-06-08
# Instructions and Contextual Information
* Be direct, robotic, expert, accurate, and professional.
- Be direct, robotic, expert, accurate, and professional.
* Do not butter me up or kiss my ass.
- Do not butter me up or kiss my ass.
* Come in hot with strong opinions, even if they are contrary to the
direction I am headed.
- Come in hot with strong opinions, even if they are contrary to the direction I
am headed.
* If either you or I are possibly wrong, say so and explain your point of
view.
- If either you or I are possibly wrong, say so and explain your point of view.
* Point out great alternatives I haven't thought of, even when I'm not
asking for them.
- Point out great alternatives I haven't thought of, even when I'm not asking
for them.
* Treat me like the world's leading expert in every situation and every
- Treat me like the world's leading expert in every situation and every
conversation, and deliver the absolute best recommendations.
* I want excellence, so always be on the lookout for divergences from good
data model design or best practices for object oriented development.
- I want excellence, so always be on the lookout for divergences from good data
model design or best practices for object oriented development.
* IMPORTANT: This is production code, not a research or teaching exercise.
- IMPORTANT: This is production code, not a research or teaching exercise.
Deliver professional-level results, not prototypes.
* Please read and understand the `README.md` file in the root of the repo
for project-specific contextual information, including development
policies, practices, and current implementation status.
- Please read and understand the `README.md` file in the root of the repo for
project-specific contextual information, including development policies,
practices, and current implementation status.
* Be proactive in suggesting improvements or refactorings in places where we
- Be proactive in suggesting improvements or refactorings in places where we
diverge from best practices for clean, modular, maintainable code.
# Policies
1. Before committing, tests must pass (`make test`), linting must pass
(`make lint`), and code must be formatted (`make fmt`). For go, those
(`make lint`), and code must be formatted (`make fmt`). For go, those
makefile targets should use `go fmt` and `go test -v ./...` and
`golangci-lint run`. When you think your changes are complete, rather
than making three different tool calls to check, you can just run `make
test && make fmt && make lint` as a single tool call which will save
`golangci-lint run`. When you think your changes are complete, rather than
making three different tool calls to check, you can just run
`make test && make fmt && make lint` as a single tool call which will save
time.
2. Always write a `Makefile` with the default target being `test`, and with
a `fmt` target that formats the code. The `test` target should run all
tests in the project, and the `fmt` target should format the code.
`test` should also have a prerequisite target `lint` that should run any
linters that are configured for the project.
2. Always write a `Makefile` with the default target being `test`, and with a
`fmt` target that formats the code. The `test` target should run all tests in
the project, and the `fmt` target should format the code. `test` should also
have a prerequisite target `lint` that should run any linters that are
configured for the project.
3. After each completed bugfix or feature, the code must be committed. Do
all of the pre-commit checks (test, lint, fmt) before committing, of
course.
3. After each completed bugfix or feature, the code must be committed. Do all of
the pre-commit checks (test, lint, fmt) before committing, of course.
4. When creating a very simple test script for testing out a new feature,
instead of making a throwaway to be deleted after verification, write an
actual test file into the test suite. It doesn't need to be very big or
actual test file into the test suite. It doesn't need to be very big or
complex, but it should be a real test that can be run.
5. When you are instructed to make the tests pass, DO NOT delete tests, skip
tests, or change the tests specifically to make them pass (unless there
is a bug in the test). This is cheating, and it is bad. You should only
be modifying the test if it is incorrect or if the test is no longer
relevant. In almost all cases, you should be fixing the code that is
being tested, or updating the tests to match a refactored implementation.
tests, or change the tests specifically to make them pass (unless there is a
bug in the test). This is cheating, and it is bad. You should only be
modifying the test if it is incorrect or if the test is no longer relevant.
In almost all cases, you should be fixing the code that is being tested, or
updating the tests to match a refactored implementation.
6. When dealing with dates and times or timestamps, always use, display, and
store UTC. Set the local timezone to UTC on startup. If the user needs
to see the time in a different timezone, store the user's timezone in a
separate field and convert the UTC time to the user's timezone when
displaying it. For internal use and internal applications and
administrative purposes, always display UTC.
store UTC. Set the local timezone to UTC on startup. If the user needs to see
the time in a different timezone, store the user's timezone in a separate
field and convert the UTC time to the user's timezone when displaying it. For
internal use and internal applications and administrative purposes, always
display UTC.
7. Always write tests, even if they are extremely simple and just check for
correct syntax (ability to compile/import). If you are writing a new
feature, write a test for it. You don't need to target complete
coverage, but you should at least test any new functionality you add. If
you are fixing a bug, write a test first that reproduces the bug, and
then fix the bug in the code.
correct syntax (ability to compile/import). If you are writing a new feature,
write a test for it. You don't need to target complete coverage, but you
should at least test any new functionality you add. If you are fixing a bug,
write a test first that reproduces the bug, and then fix the bug in the code.
8. When implementing new features, be aware of potential side-effects (such
as state files on disk, data in the database, etc.) and ensure that it is
8. When implementing new features, be aware of potential side-effects (such as
state files on disk, data in the database, etc.) and ensure that it is
possible to mock or stub these side-effects in tests.
9. Always use structured logging. Log any relevant state/context with the
messages (but do not log secrets). If stdout is not a terminal, output
the structured logs in jsonl format.
9. Always use structured logging. Log any relevant state/context with the
messages (but do not log secrets). If stdout is not a terminal, output the
structured logs in jsonl format.
10. Avoid using bare strings or numbers in code, especially if they appear
anywhere more than once. Always define a constant (usually at the top
of the file) and give it a descriptive name, then use that constant in
the code instead of the bare string or number.
anywhere more than once. Always define a constant (usually at the top of the
file) and give it a descriptive name, then use that constant in the code
instead of the bare string or number.
11. You do not need to summarize your changes in the chat after making them.
Making the changes and committing them is sufficient. If anything out
of the ordinary happened, please explain it, but in the normal case
where you found and fixed the bug, or implemented the feature, there is
no need for the end-of-change summary.
Making the changes and committing them is sufficient. If anything out of the
ordinary happened, please explain it, but in the normal case where you found
and fixed the bug, or implemented the feature, there is no need for the
end-of-change summary.
12. Do not create additional files in the root directory of the project
without asking permission first. Configuration files, documentation, and
build files are acceptable in the root, but source code and other files
should be organized in appropriate subdirectories.
12. Do not create additional files in the root directory of the project without
asking permission first. Configuration files, documentation, and build files
are acceptable in the root, but source code and other files should be
organized in appropriate subdirectories.
## Python-Specific Guidelines
1. **Type Annotations (UP006)**: Use built-in collection types directly for type annotations instead of importing from `typing`. This avoids the UP006 linter error.
**Good (modern Python 3.9+):**
```python
def process_items(items: list[str]) -> dict[str, int]:
counts: dict[str, int] = {}
return counts
```
**Avoid (triggers UP006):**
```python
from typing import List, Dict
def process_items(items: List[str]) -> Dict[str, int]:
counts: Dict[str, int] = {}
return counts
```
For optional types, use the `|` operator instead of `Union`:
```python
# Good
def get_value(key: str) -> str | None:
return None
# Avoid
from typing import Optional, Union
def get_value(key: str) -> Optional[str]:
return None
```
1. **Type Annotations (UP006)**: Use built-in collection types directly for type
annotations instead of importing from `typing`. This avoids the UP006 linter
error.
**Good (modern Python 3.9+):**
```python
def process_items(items: list[str]) -> dict[str, int]:
counts: dict[str, int] = {}
return counts
```
**Avoid (triggers UP006):**
```python
from typing import List, Dict
def process_items(items: List[str]) -> Dict[str, int]:
counts: Dict[str, int] = {}
return counts
```
For optional types, use the `|` operator instead of `Union`:
```python
# Good
def get_value(key: str) -> str | None:
return None
# Avoid
from typing import Optional, Union
def get_value(key: str) -> Optional[str]:
return None
```
2. **Import Organization**: Follow the standard Python import order:
- Standard library imports
- Third-party imports
- Local application imports
Each group should be separated by a blank line.
- Standard library imports
- Third-party imports
- Local application imports
Each group should be separated by a blank line.
## Go-Specific Guidelines
1. **No `panic`, `log.Fatal`, or `os.Exit` in library code.** Always propagate errors via return values.
1. **No `panic`, `log.Fatal`, or `os.Exit` in library code.** Always propagate
errors via return values.
2. **Constructors return `(*T, error)`, not just `*T`.** Callers must handle errors, not crash.
2. **Constructors return `(*T, error)`, not just `*T`.** Callers must handle
errors, not crash.
3. **Wrap errors** with `fmt.Errorf("context: %w", err)` for debuggability.
4. **Never modify linter config** (`.golangci.yml`) to suppress findings. Fix the code.
4. **Never modify linter config** (`.golangci.yml`) to suppress findings. Fix
the code.
5. **All PRs must pass `make check` with zero failures.** No exceptions, no "pre-existing issue" excuses.
5. **All PRs must pass `make check` with zero failures.** No exceptions, no
"pre-existing issue" excuses.
6. **Pin external dependencies by commit hash**, not mutable tags.
+183 -147
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@@ -1,72 +1,69 @@
# secret - Local Secret Manager
secret is a command-line local secret manager that implements a hierarchical
key architecture for storing and managing sensitive data. It supports
multiple vaults, various unlock mechanisms, and provides secure storage
using the `age` encryption library.
## Description
It could be used as password manager, but was not designed as such. I
created it to scratch an itch for a secure key/value store for replacing a
bunch of pgp-encrypted files in a directory structure.
`secret` is a WTFPL-licensed Go command-line local secret manager by
[@sneak](https://sneak.berlin) that implements a hierarchical key architecture
for storing and managing sensitive data. It supports multiple vaults, various
unlock mechanisms, and provides secure storage using the `age` encryption
library.
## Core Architecture
## Getting Started
Build from source, then install the binary as `~/bin/secret`:
```bash
git clone https://git.eeqj.de/sneak/secret.git
cd secret
make build # writes the binary to ./secret
make install # builds it and copies it to ~/bin/secret
```
Generate a mnemonic, create the default vault, then store and read a secret:
```bash
secret generate mnemonic # prints a new BIP39 mnemonic; write it down
secret init # asks for that mnemonic and an unlocker passphrase
echo "my-password" | secret add myservice/password
secret get myservice/password
```
## Rationale
I created `secret` to scratch an itch: I wanted a secure key/value store to
replace a bunch of PGP-encrypted files in a directory structure. It could be
used as a password manager, but was not designed as one.
## Design
### Three-Layer Key Hierarchy
Secret implements a three-layer key architecture:
1. **Long-term Keys**: Derived from BIP39 mnemonic phrases, these provide
the foundation for all encryption
2. **Unlockers**: Short-term keys that encrypt the long-term keys,
supporting multiple authentication methods
3. **Version-specific Keys**: Per-version keys that encrypt individual
secret values
1. **Long-term Keys**: Derived from BIP39 mnemonic phrases, these provide the
foundation for all encryption
2. **Unlockers**: Short-term keys that encrypt the long-term keys, supporting
multiple authentication methods
3. **Version-specific Keys**: Per-version keys that encrypt individual secret
values
### Version Management
Each secret maintains a history of versions, with each version having:
- Its own encryption key pair
- Metadata (unencrypted) including creation time and validity period
- Metadata including creation time and validity period, encrypted to the
version's key pair
- Immutable value storage
- Atomic version switching via symlink updates
The secret's `current` file names its current version. Switching versions
replaces that file in one rename, so it is never half-written.
### Vault System
Vaults provide logical separation of secrets, each with its own long-term
key and unlocker set. This allows for complete isolation between different
contexts (work, personal, projects).
## Installation
Build from source:
```bash
git clone <repository>
cd secret
make build
```
## Quick Start
1. **Initialize the secret manager**:
```bash
secret init
```
This creates the default vault and prompts for a BIP39 mnemonic phrase.
2. **Generate a mnemonic** (if needed):
```bash
secret generate mnemonic
```
3. **Add a secret**:
```bash
echo "my-password" | secret add myservice/password
```
4. **Retrieve a secret**:
```bash
secret get myservice/password
```
Vaults provide logical separation of secrets, each with its own long-term key
and unlocker set. This allows for complete isolation between different contexts
(work, personal, projects).
## Commands Reference
@@ -74,10 +71,10 @@ make build
`secret rm`, `secret version rm`, `secret vault remove` and
`secret unlocker remove` destroy data that exists nowhere else. On a terminal
each one first asks `[y/N]`, naming exactly what it is about to remove, and
goes ahead only on `y` or `yes`; any other answer, a bare Enter included,
cancels and removes nothing. The question is asked only after the command's
checks have passed, and before it changes anything.
each one first asks `[y/N]`, naming exactly what it is about to remove, and goes
ahead only on `y` or `yes`; any other answer, a bare Enter included, cancels and
removes nothing. The question is asked only after the command's checks have
passed, and before it changes anything.
Whether to ask is decided by stdin, where the answer is read from, so
`secret rm foo | tee log` still asks. When stdin is not a terminal, as in a
@@ -96,6 +93,7 @@ Initializes the secret manager with a default vault. Prompts for a BIP39
mnemonic phrase and creates the initial directory structure.
**Environment Variables:**
- `SB_SECRET_MNEMONIC`: Pre-set mnemonic phrase
- `SB_UNLOCK_PASSPHRASE`: Pre-set unlock passphrase
@@ -118,8 +116,8 @@ Switches to the specified vault for subsequent operations.
#### `secret vault remove <name> [--force]` / `secret vault rm` ⚠️ 🛑
**DANGER**: Permanently removes a vault and all its secrets. It first asks
for confirmation, naming the vault and how many secrets it holds (see
**DANGER**: Permanently removes a vault and all its secrets. It first asks for
confirmation, naming the vault and how many secrets it holds (see
[Confirmation Before Removal](#confirmation-before-removal)). The last vault
cannot be removed. Removing the current vault makes another vault the current
one.
@@ -132,58 +130,65 @@ one.
#### `secret add <secret-name> [--force]`
Adds a secret to the current vault. Reads the secret value from stdin.
- `--force, -f`: Overwrite existing secret
**Secret Name Format:** only ASCII letters, digits, `.`, `-`, `_` and `/`
are allowed, and a name must not be empty, start with `.` or `/`, end with
`/`, contain `//`, or have `..` as a path segment.
**Secret Name Format:** only ASCII letters, digits, `.`, `-`, `_` and `/` are
allowed, and a name must not be empty, start with `.` or `/`, end with `/`,
contain `//`, or have `..` as a path segment.
- Forward slashes (`/`) are converted to percent signs (`%`) for storage
- Examples: `database/password`, `api.key`, `ssh_private_key`
#### `secret get <secret-name> [--version <version>]`
Retrieves and outputs a secret value to stdout.
- `--version, -v`: Get a specific version (default: current)
#### `secret list [filter] [--json]` / `secret ls`
Lists all secrets in the current vault. Optional filter for substring
matching.
Lists all secrets in the current vault. Optional filter for substring matching.
#### `secret remove <secret-name> [--force]` / `secret rm` ⚠️ 🛑
**DANGER**: Permanently removes a secret and ALL its versions. It first asks
for confirmation, naming the secret, its vault and how many versions it has
(see [Confirmation Before Removal](#confirmation-before-removal)).
**DANGER**: Permanently removes a secret and ALL its versions. It first asks for
confirmation, naming the secret, its vault and how many versions it has (see
[Confirmation Before Removal](#confirmation-before-removal)).
- `--force, -f`: Remove without asking
- **NO RECOVERY**: Once removed, the secret cannot be recovered
- **ALL VERSIONS DELETED**: Every version of the secret will be permanently deleted
- **ALL VERSIONS DELETED**: Every version of the secret will be permanently
deleted
#### `secret move <source> <destination>` / `secret mv` / `secret rename`
Moves or renames a secret within the current vault.
- Fails if the destination already exists
- Fails if the destination is the source under another name, such as `foo`
for `Foo` on a case-insensitive filesystem (the macOS default); there, to
change only the case of a name, move the secret to a third name first
- Fails if the destination is the source under another name, such as `foo` for
`Foo` on a case-insensitive filesystem (the macOS default); there, to change
only the case of a name, move the secret to a third name first
- Preserves all versions and metadata
### Version Management
#### `secret version list <secret-name>` / `secret version ls`
Lists all versions of a secret showing creation time, status, and validity period.
Lists all versions of a secret showing creation time, status, and validity
period.
#### `secret version promote <secret-name> <version>`
Promotes a specific version to current by updating the symlink. Does not
modify any timestamps, allowing for rollback scenarios.
Promotes a specific version to current by updating the symlink. Does not modify
any timestamps, allowing for rollback scenarios.
#### `secret version remove <secret-name> <version> [--force]` / `secret version rm` ⚠️ 🛑
**DANGER**: Permanently removes a specific version of a secret. It first asks
for confirmation, naming the version, the secret and its vault (see
[Confirmation Before Removal](#confirmation-before-removal)).
- `--force, -f`: Remove without asking
- **NO RECOVERY**: Once removed, this version cannot be recovered
- Cannot remove the current version (must promote another version first)
@@ -197,6 +202,7 @@ Generates a cryptographically secure BIP39 mnemonic phrase.
#### `secret generate secret <name> [--length=16] [--type=base58] [--force]`
Generates and stores a random secret.
- `--length, -l`: Length of generated secret (default: 16)
- `--type, -t`: Type of secret (`base58`, `alnum`)
- `--force, -f`: Overwrite existing secret
@@ -212,16 +218,19 @@ Lists all unlockers in the current vault with their metadata.
Creates a new unlocker of the specified type:
**Types:**
- `passphrase`: Traditional passphrase-protected unlocker
- `pgp`: Uses an existing GPG key for encryption/decryption
- `keychain`: macOS Keychain integration (macOS only)
- `secure-enclave`: Hardware-backed Secure Enclave protection (macOS only)
**Options:**
- `--keyid <id>`: GPG key ID (optional for PGP type, uses default key if not specified)
A vault has one passphrase unlocker: adding one replaces the one the vault
has, which is removed only once the new one is the current unlocker.
- `--keyid <id>`: GPG key ID (optional for PGP type, uses default key if not
specified)
A vault has one passphrase unlocker: adding one replaces the one the vault has,
which is removed only once the new one is the current unlocker.
#### `secret unlocker remove <unlocker-id> [--force]` / `secret unlocker rm` ⚠️ 🛑
@@ -230,9 +239,9 @@ naming the unlocker and its vault and saying whether it is the vault's last
unlocker; for the last one it says how many secrets the vault holds and warns
that the vault then opens only with its mnemonic (see
[Confirmation Before Removal](#confirmation-before-removal)). An unlocker
directory that `secret unlocker list` skips with a warning, because its
metadata cannot be read or parsed, is removed by the directory name the
warning gives.
directory that `secret unlocker list` skips with a warning, because its metadata
cannot be read or parsed, is removed by the directory name the warning gives.
- `--force, -f`: Remove without asking, even the last unlocker
- **CRITICAL WARNING**: Without unlockers and without your mnemonic phrase,
vault data will be PERMANENTLY INACCESSIBLE
@@ -247,7 +256,8 @@ Selects an unlocker as the current default for operations.
#### `secret import <secret-name> --source <filename>`
Imports a secret from a file and stores it in the current vault under the given name.
Imports a secret from a file and stores it in the current vault under the given
name.
#### `secret vault import [vault-name]`
@@ -257,7 +267,8 @@ Imports a mnemonic phrase into the specified vault (defaults to "default").
#### `secret encrypt <secret-name> [--input=file] [--output=file]`
Encrypts data using an Age key stored as a secret. If the secret doesn't exist, generates a new Age key.
Encrypts data using an Age key stored as a secret. If the secret doesn't exist,
generates a new Age key.
#### `secret decrypt <secret-name> [--input=file] [--output=file]`
@@ -302,37 +313,43 @@ Decrypts data using an Age key stored as a secret.
### Key Management and Encryption Flow
#### 1: Long-term Keys
- **Source**: Derived from BIP39 mnemonic phrases using hierarchical deterministic (HD) key derivation
- **Source**: Derived from BIP39 mnemonic phrases using hierarchical
deterministic (HD) key derivation
- **Purpose**: Master keys for each vault, used to encrypt secret-specific keys
- **Storage**: Public key stored as `pub.age`, private key encrypted by unlockers
- **Storage**: Public key stored as `pub.age`, private key encrypted by
unlockers
#### 2: Unlockers
Unlockers provide different authentication methods to access the long-term keys:
1. **Passphrase Unlockers**:
- Encrypted with user-provided passphrase
- Stored as encrypted Age keys
- Cross-platform compatible
- Encrypted with user-provided passphrase
- Stored as encrypted Age keys
- Cross-platform compatible
2. **PGP Unlockers**:
- Uses existing GPG key infrastructure
- Leverages existing key management workflows
- Strong authentication through GPG
- Uses existing GPG key infrastructure
- Leverages existing key management workflows
- Strong authentication through GPG
3. **Keychain Unlockers** (macOS only):
- Stores unlock keys in macOS Keychain
- Protected by system authentication (Touch ID, password)
- Automatic unlocking when Keychain is unlocked
- Cross-application integration
- Stores unlock keys in macOS Keychain
- Protected by system authentication (Touch ID, password)
- Automatic unlocking when Keychain is unlocked
- Cross-application integration
4. **Secure Enclave Unlockers** (macOS):
- Hardware-backed key storage using Apple Secure Enclave
- Uses `sc_auth` / CryptoTokenKit for SE key management (no Apple Developer Program required)
- ECIES encryption: vault long-term key encrypted directly by SE hardware
- Protected by biometric authentication (Touch ID) or system password
- Hardware-backed key storage using Apple Secure Enclave
- Uses `sc_auth` / CryptoTokenKit for SE key management (no Apple Developer
Program required)
- ECIES encryption: vault long-term key encrypted directly by SE hardware
- Protected by biometric authentication (Touch ID) or system password
Each vault maintains its own set of unlockers and one long-term key. The long-term key is encrypted to each unlocker, allowing any authorized unlocker to access vault secrets.
Each vault maintains its own set of unlockers and one long-term key. The
long-term key is encrypted to each unlocker, allowing any authorized unlocker to
access vault secrets.
#### 3: Secret-specific Keys
@@ -352,18 +369,19 @@ they hold. Other processes running as the same user can read a process's
environment (on Linux, from `/proc/<pid>/environ`). Every child process of the
shell or script that sets them inherits them, `gpg` included. Set on a command
line or in a CI job, they end up in shell history and CI logs. `secret` unsets
each one as soon as it has read it, so that the programs it runs itself, such
as `gpg`, do not inherit it, but that erases nothing: the environment the
process started with, and its memory, still hold the value. The interactive
prompt, which every command except `secret vault import` offers when the
variable is not set, is the safer default; `secret vault import` has no prompt
and needs both variables.
each one as soon as it has read it, so that the programs it runs itself, such as
`gpg`, do not inherit it, but that erases nothing: the environment the process
started with, and its memory, still hold the value. The interactive prompt,
which every command except `secret vault import` offers when the variable is not
set, is the safer default; `secret vault import` has no prompt and needs both
variables.
## Security Features
### Encryption
- Uses the [age encryption library](https://age-encryption.org/) with X25519 keys
- Uses the [age encryption library](https://age-encryption.org/) with X25519
keys
- All private keys are encrypted at rest
- No plaintext secrets stored on disk
@@ -382,7 +400,8 @@ and needs both variables.
- Hardware token support via PGP/GPG integration
- macOS Keychain integration for system-level security
- Secure Enclave integration for hardware-backed key protection (macOS, via `sc_auth` / CryptoTokenKit)
- Secure Enclave integration for hardware-backed key protection (macOS, via
`sc_auth` / CryptoTokenKit)
## Examples
@@ -431,6 +450,7 @@ secret vault remove personal --force
```
### Advanced Authentication
```bash
# Add multiple unlock methods
secret unlocker add passphrase # Password-based
@@ -477,21 +497,27 @@ secret decrypt encryption/mykey --input document.txt.age --output document.txt
## Technical Details
### Cryptographic Primitives
- **Key Derivation**: BIP32/BIP39 hierarchical deterministic key derivation
- **Encryption**: Age (X25519 + ChaCha20-Poly1305)
- **Authentication**: Poly1305 MAC
- **Hashing**: Double SHA-256 for public key identification
### File Formats
- **age Files**: Standard age encryption format (.age extension)
- **Metadata**: Unencrypted JSON format with timestamps and type information
- **Vault Metadata**: JSON containing vault name, creation time, derivation index, and public key hash
- **Vault Metadata**: JSON containing vault name, creation time, derivation
index, and public key hash
### Vault Management
- **Derivation Index**: Each vault uses a unique derivation index from the mnemonic, and thus a unique key pair
- **Public Key Hash**: Double SHA-256 hash of the index-0 public key identifies vaults from the same mnemonic
- **Automatic Key Derivation**: When creating vaults with a mnemonic, keys are automatically derived
- **Derivation Index**: Each vault uses a unique derivation index from the
mnemonic, and thus a unique key pair
- **Public Key Hash**: Double SHA-256 hash of the index-0 public key identifies
vaults from the same mnemonic
- **Automatic Key Derivation**: When creating vaults with a mnemonic, keys are
automatically derived
### Cross-Platform Support
@@ -527,6 +553,7 @@ to add or use them.
## Development
### Building
```bash
make build # Build binary
make test # Run tests
@@ -534,7 +561,9 @@ make lint # Run linter
```
### Testing
The project includes comprehensive tests:
```bash
make test # Run all tests
go test ./... # Unit tests
@@ -546,61 +575,68 @@ go test -tags=integration -v ./internal/cli # Integration tests
This repository adheres to the
[Scripts to Rule Them All](https://github.com/github/scripts-to-rule-them-all)
standard: normalized scripts in `script/` are the entrypoints for the
development workflow, and the Makefile targets are thin shims that call
them. We provide:
development workflow, and the Makefile targets are thin shims that call them. We
provide:
- `script/bootstrap` — install all dependencies (Go, Go module
download), idempotently; golangci-lint is not installed, it runs in
docker
- `script/bootstrap` — install all dependencies (Go, Go module download),
idempotently; golangci-lint is not installed, it runs in docker
- `script/setup` — make a fresh clone ready for development: runs
`script/bootstrap`, then `script/install-precommit`
- `script/projectname` — output the project name (`secret`); used by
other scripts such as `script/docker`
- `script/build` — build the `secret` binary into the repo root, stamping
the version (`VERSION` from the environment, else `git describe`) and
the git commit
- `script/test` — run `go vet` and the test suite (verbose rerun on
failure)
- `script/lint` — run `golangci-lint` in docker only: builds
`Dockerfile.lint`, where the linter is a build step that runs on every
call, also on an unchanged tree
- `script/lint-darwin` — run `go vet` and `golangci-lint` in docker on
the code as a macOS build compiles it (`GOOS=darwin`), which a Linux
build never compiles; cgo is off, so the keychain unlocker's calls into
the keychain (`internal/secret/keychainunlocker_cgo.go`, and
`keychainunlocker_test.go`) and the Secure Enclave bindings
(`internal/macse`) are not checked
- `script/projectname` — output the project name (`secret`); used by other
scripts such as `script/docker`
- `script/build` — build the `secret` binary into the repo root, stamping the
version (`VERSION` from the environment, else `git describe`) and the git
commit
- `script/test` — run `go vet` and the test suite (verbose rerun on failure)
- `script/lint` — run `golangci-lint` in docker only: builds `Dockerfile.lint`,
where the linter is a build step that runs on every call, also on an unchanged
tree
- `script/lint-darwin` — run `go vet` and `golangci-lint` in docker on the code
as a macOS build compiles it (`GOOS=darwin`), which a Linux build never
compiles; cgo is off, so the keychain unlocker's calls into the keychain
(`internal/secret/keychainunlocker_cgo.go`, and `keychainunlocker_test.go`)
and the Secure Enclave bindings (`internal/macse`) are not checked
- `script/fmt` — format all Go code (writes)
- `script/fmt-check` — check formatting without writing
- `script/check` — run `script/test`, `script/lint`,
`script/lint-darwin`, and `script/fmt-check`
- `script/check` — run `script/test`, `script/lint`, `script/lint-darwin`, and
`script/fmt-check`
- `script/docker` — build the Docker image tagged with the project name
- `script/cibuild` — CI entrypoint: `docker build --ulimit
memlock=-1:-1 .` (memguard needs mlock; the Dockerfile runs the
checks), with a new `CHECK_EPOCH` build argument on every run so the
checks run again on an unchanged tree
- `script/precommit` — pre-commit checks: `go mod tidy` verification,
then `script/check`
- `script/install-precommit` — install the git pre-commit hook that
runs `script/precommit`
- `script/cibuild` — CI entrypoint: `docker build --ulimit memlock=-1:-1 .`
(memguard needs mlock; the Dockerfile runs the checks), with a new
`CHECK_EPOCH` build argument on every run so the checks run again on an
unchanged tree
- `script/precommit` — pre-commit checks: `go mod tidy` verification, then
`script/check`
- `script/install-precommit` — install the git pre-commit hook that runs
`script/precommit`
## Features
- **Multiple Authentication Methods**: Supports passphrase, PGP, macOS Keychain, and Secure Enclave unlockers
- **Multiple Authentication Methods**: Supports passphrase, PGP, macOS Keychain,
and Secure Enclave unlockers
- **Vault Isolation**: Complete separation between different vaults
- **Per-Secret Encryption**: Each secret has its own encryption key
- **BIP39 Mnemonic Support**: Keyless operation using mnemonic phrases
- **Cross-Platform**: Works on macOS, Linux, and other Unix-like systems
# Author
## TODO
Made with love and lots of expensive SOTA AI by
[sneak](https://sneak.berlin) in Berlin in the summer of 2025.
Open work is tracked on the
[issue tracker](https://git.eeqj.de/sneak/secret/issues), which is
authoritative. The work to be done before 1.0 is the
[`1.0.0` milestone](https://git.eeqj.de/sneak/secret/milestone/12). `TODO.md`
records the steps completed so far.
Released as a free software gift to the world, no strings attached, under
the [WTFPL](https://www.wtfpl.net/) license.
## License
Released as a free software gift to the world, no strings attached, under the
[WTFPL](https://www.wtfpl.net/) license; see [`LICENSE`](LICENSE).
## Author
Made with love and lots of expensive SOTA AI by [@sneak](https://sneak.berlin)
in Berlin in the summer of 2025.
Contact: [sneak@sneak.berlin](mailto:sneak@sneak.berlin)
[https://keys.openpgp.org/vks/v1/by-fingerprint/5539AD00DE4C42F3AFE11575052443F4DF2A55C2](https://keys.openpgp.org/vks/v1/by-fingerprint/5539AD00DE4C42F3AFE11575052443F4DF2A55C2)
+41 -49
View File
@@ -1,30 +1,38 @@
# Workflow
* branch (from `main`)
* do the work in Next Step
* move Next Step to the top of Completed Steps
* move the top item of Future Steps into Next Step
* commit (`TODO.md` changes in the same commit as the work)
* merge to `main` if the branch is not protected, otherwise open a PR
* push
- branch from `next`
- do the Next Step: the next open issue in the `1.0.0` milestone
- log it at the top of Completed Steps
- commit (`TODO.md` changes in the same commit as the work)
- push, and open a PR against `next`
# Status
pre-1.0. No git tags. TODO.md carries open 1.0 security blockers. Work in
flight on branch secure-enclave-unlocker (clean tree as of 2026-07-06).
pre-1.0. No git tags. Open work is tracked on the issue tracker, which is
authoritative.
# Next Step
Bring the repo into policy compliance in one commit:
- Add fmt-check and hooks targets to the Makefile (test/lint/fmt/check/
docker already exist).
- Add REPO_POLICIES.md and .editorconfig.
- Add .gitea/workflows/check.yml running make check.
- Verify Dockerfile base images are pinned by sha256.
Take the next open issue in the `1.0.0` milestone:
https://git.eeqj.de/sneak/secret/milestone/12
# Completed Steps
- 2026-10-04: What a command killed part-way left under a `.tmp-` name
(https://git.eeqj.de/sneak/secret/issues/75), the temporary directories
of `secret.TempDirFor` and the temporary files of
`secret.WriteFileAtomic`, encrypted keys included, is deleted by the next
command that takes the state directory lock. Before, it stayed until
deleted by hand. A command writes `finished` into the lock file just
before it releases the lock; the next one to take the lock searches only
when it does not find that, so after a command that finished nothing is
searched, however many secrets and versions there are. The search looks
in the state directory, each vault, each secret and each version, the
only directories those helpers make them in. A command that only reads
takes no lock and deletes nothing. A failure to delete is warned about
and the command goes on. An unlocker directory with no metadata file was
already removed by `secret unlocker remove` given its directory name; a
test now shows it.
- 2026-10-04: An age identity's private key goes into a locked buffer
through `secret.IdentityToLockedBuffer` everywhere
(https://git.eeqj.de/sneak/secret/issues/38): the vault's long-term key
@@ -235,15 +243,10 @@ Bring the repo into policy compliance in one commit:
cross-vault copies are built in a temporary directory and renamed
into place, and removals rename out of the way first, so a version
or secret is never half-added and never half-removed. An
interrupted command can still leave:
- from `init` or `vault create` killed after the passphrase prompt
but before the unlocker is written, a vault with no unlocker,
which `vault create` has already made the current vault;
- data under a `.tmp-` name in the state directory: a secret,
version or unlocker being added, or the secret, version, unlocker
or vault being removed, encrypted keys included. Nothing deletes
it; it must be deleted by hand
(https://git.eeqj.de/sneak/secret/issues/75).
interrupted command can still leave, from `init` or `vault create`
killed after the passphrase prompt but before the unlocker is
written, a vault with no unlocker, which `vault create` has already
made the current vault.
- 2026-10-03: The checks run before changing a vault now stop with an
error naming the path and cause when they cannot read what they
inspect, instead of reading the failure as "nothing there": the
@@ -299,8 +302,15 @@ Bring the repo into policy compliance in one commit:
`findUnlockerIDByMetadata` now returns an error so `unlocker list`
skips an unreadable `unlockers.d` entry with a warning instead of
emitting a fabricated fallback ID.
- 2026-08-07: Added `.editorconfig`
(https://git.eeqj.de/sneak/secret/issues/27).
- 2026-07-07 Adopted scripts-to-rule-them-all: `script/` entrypoints,
Makefile shims, README Entrypoints section
- 2026-07-07: Added `REPO_POLICIES.md` and the `make hooks` target;
`.gitea/workflows/check.yml` now runs `script/cibuild`.
- 2026-03-30: Added the `make fmt-check` target and
`.gitea/workflows/check.yml`, which runs `docker build` on every push; the
`Dockerfile` base images are pinned by sha256.
- 2026-03-11: Secure Enclave unlocker for hardware-backed secret
protection, plus review fixes (stub panics, derivation index, tests,
README) on branch secure-enclave-unlocker.
@@ -322,8 +332,6 @@ Bring the repo into policy compliance in one commit:
# Future Steps
- Compliance (after Next Step lands): keep main green under the new
.gitea workflow; run make check before every merge.
- Implement version-number shell completion for the second arg of
`secret version promote` and `secret version rm`
(`internal/cli/version.go`; was an in-code TODO removed for godox).
@@ -338,34 +346,18 @@ Bring the repo into policy compliance in one commit:
never run on them, so it would likely find more there than the line
lengths. No macOS test runs in CI. A macOS runner would cover all of it
(asked on https://git.eeqj.de/sneak/secret/issues/50).
- Merge secure-enclave-unlocker to main once review is done.
- 1.0 critical security blockers (from repo TODO.md):
- Command injection: GPG key IDs passed unescaped to exec.Command
(pgpunlocker.go:323-327); data.String() passed unescaped to the
security command (keychainunlocker.go:472-476).
- Memory security: age writes an identity's private key out as a
string in ordinary memory, and the copies it makes on the way stay
there (`secret.IdentityToLockedBuffer` overwrites only the string
itself); private keys exposed via buffer.Bytes() to GPGEncryptFunc
and EncryptWithPassphrase.
- Input validation: no maximum secret size (DoS).
- Timing attacks: bytes.Equal passphrase compare (cli/init.go:
209-216); non-constant-time public key compare (vault.go:95-100).
- High priority:
- Secure temporary file handling and cleanup.
- Initialize a default unlock key at vault creation.
- Add secret rm and vault deletion commands.
- Memory security: age writes an identity's private key out as a string in
ordinary memory, and the copies it makes on the way stay there
(`secret.IdentityToLockedBuffer` overwrites only the string itself).
- Medium priority:
- Standardize error messages; stop leaking internals.
- Graceful handling of corrupted or missing key files with recovery
suggestions.
- Validate GPG key existence before creating PGP unlock keys.
- Split oversized CLI functions.
- mlock/munlock for sensitive allocations.
- Cleanups: read statedir from environment or default instead of
passing it around.
- Enhancements: help examples, shell completion, colored output,
--quiet flag, name suggestions on miss, audit logging, hardware
integration tests (Keychain, GPG), naming consistency, vault
export/import, batch operations, search, secret metadata
- Enhancements: help examples, colored output, --quiet flag, name suggestions on
miss, audit logging, hardware integration tests (Keychain, GPG), naming
consistency, vault export/import, batch operations, search, secret metadata
(descriptions, tags).
+74
View File
@@ -0,0 +1,74 @@
package cli_test
import (
"io"
"testing"
"git.eeqj.de/sneak/secret/internal/cli"
"git.eeqj.de/sneak/secret/internal/secret"
"git.eeqj.de/sneak/secret/internal/vault"
"github.com/spf13/afero"
"github.com/spf13/cobra"
"github.com/stretchr/testify/require"
)
// TestLeftoversRemovedByNextChangingCommand is a regression test for
// https://git.eeqj.de/sneak/secret/issues/75. It plants what a command
// killed part-way leaves in each directory where secret.TempDirFor and
// secret.WriteFileAtomic make temporary entries: a temporary directory
// holding a vault, secret, unlocker or version being added or removed, and
// a temporary file beside a file being replaced. `secret list` must leave
// them all, and the next command that takes the state directory lock, here
// `secret vault select` of the vault already current, must delete exactly
// them: a vault named like a temporary directory stays. The copy has no
// lock file yet, so that command, as after a killed one, finds no mark that
// the last holder of the lock finished.
func TestLeftoversRemovedByNextChangingCommand(t *testing.T) {
t.Parallel()
fs := newTwoVaultFs(t)
_, err := vault.CreateVault(fs, testStateDir, ".tmp-0", nil)
require.NoError(t, err)
require.NoError(t, vault.SelectVault(fs, testStateDir, "default"))
before := snapshotStateDir(t, fs)
vaultDir := testStateDir + "/vaults.d/default"
secretDir := vaultDir + "/secrets.d/x"
versions, err := secret.ListVersions(fs, secretDir)
require.NoError(t, err)
require.Len(t, versions, 1)
for _, dir := range []string{
testStateDir + "/.tmp-1/default",
vaultDir + "/.tmp-2/x",
secretDir + "/.tmp-3/" + testVersion,
} {
require.NoError(t, fs.MkdirAll(dir, secret.DirPerms))
require.NoError(t, afero.WriteFile(fs, dir+"/value.age",
[]byte("encrypted"), secret.FilePerms))
}
for _, file := range []string{
testStateDir + "/.currentvault.tmp-4",
vaultDir + "/.current-unlocker.tmp-5",
secretDir + "/.current.tmp-6",
secretDir + "/versions/" + versions[0] + "/.metadata.age.tmp-7",
} {
require.NoError(t, afero.WriteFile(fs, file,
[]byte("partial"), secret.FilePerms))
}
planted := snapshotStateDir(t, fs)
c := cli.NewCLIInstanceWithStateDir(fs, testStateDir)
cmd := &cobra.Command{}
cmd.SetOut(io.Discard)
require.NoError(t, c.ListSecrets(cmd, false, false, ""))
require.Equal(t, planted, snapshotStateDir(t, fs))
require.NoError(t, c.SelectVault(cmd, "default"))
require.Equal(t, before, snapshotStateDir(t, fs))
}
+3 -1
View File
@@ -362,7 +362,6 @@ func requireWaitsForLock(
fs := afero.NewMemMapFs()
olderVersion, unlockerID := setupEveryCommand(t, fs, withUnlocker)
before := stateDirModTimes(t, fs)
release, err := vault.LockStateDir(fs, testStateDir)
require.NoError(t, err)
@@ -372,6 +371,9 @@ func requireWaitsForLock(
release = sync.OnceFunc(release)
defer release()
// Taken only now, since taking the lock writes the lock file.
before := stateDirModTimes(t, fs)
unlockPassphrase := memguard.NewBufferFromBytes([]byte(testPassphrase))
defer unlockPassphrase.Destroy()
+6
View File
@@ -90,6 +90,8 @@ func newTwoVaultFs(t *testing.T) afero.Fs {
// snapshotStateDir maps every file under the state directory to its
// contents, and every directory, written with a trailing "/", to "". Two
// snapshots are equal only if nothing in it was added, removed or changed.
// The lock file, which every command that takes the lock writes, is left
// out.
func snapshotStateDir(t *testing.T, fs afero.Fs) map[string]string {
t.Helper()
@@ -102,6 +104,10 @@ func snapshotStateDir(t *testing.T, fs afero.Fs) map[string]string {
return err
}
if path == testStateDir+"/lock" {
return nil
}
if info.IsDir() {
tree[path+"/"] = ""
+32 -3
View File
@@ -4,9 +4,10 @@
// by its ID. These tests give the first unlocker, which sorts before the
// one the commands act on, metadata that is not JSON, and check that the
// commands step past it, and that it can itself be removed by its
// directory name, which `secret unlocker list` names in its warning. A
// last test checks that an unlocker whose metadata file cannot be read
// counts as the last unlocker when it is removed by its directory name.
// directory name, which `secret unlocker list` names in its warning, as can
// one with no metadata file. A last test checks that an unlocker whose
// metadata file cannot be read counts as the last unlocker when it is
// removed by its directory name.
//nolint:testpackage // white-box test of unexported internals
package cli
@@ -106,6 +107,34 @@ func TestUnlockerRemoveWithCorruptUnlocker(t *testing.T) {
}
}
// TestUnlockerRemoveWithoutMetadata asserts that a partial unlocker
// directory, one with no metadata file, removed by its directory name from
// a vault with secrets, does not count as the vault's last unlocker, since
// it cannot unlock the vault, so the question says it is not. It is
// removed once the user confirms.
func TestUnlockerRemoveWithoutMetadata(t *testing.T) {
t.Parallel()
fs := newListTestVault(t, 2)
vaultDir := testVaultDir(listTestVaultName)
unlockersDir := filepath.Join(vaultDir, listTestUnlockersDirName)
require.NoError(t, fs.Remove(filepath.Join(
unlockersDir, listTestUnlockerDirOne, listTestMetadataFileName)))
writeTestSecret(t, fs, vaultDir)
instance, cmd := newTestInstance(fs)
found, err := instance.findUnlockerToRemove(listTestUnlockerDirOne)
require.NoError(t, err)
assert.False(t, found.last)
assert.Contains(t, found.question, "not the vault's last unlocker")
instance.terminal = strings.NewReader("y\n")
require.NoError(t, instance.UnlockersRemove(listTestUnlockerDirOne, false, cmd))
assertDirEntries(t, fs, unlockersDir, listTestUnlockerDirTwo)
}
// TestUnlockerRemoveWithUnreadableMetadata asserts that the only unlocker
// of a vault with secrets, removed by its directory name when its metadata
// file cannot be checked for or read, counts as the vault's last unlocker,
+41 -2
View File
@@ -5,10 +5,15 @@ import (
"fmt"
"os"
"path/filepath"
"strings"
"github.com/spf13/afero"
)
// tempNamePart is in the name of every temporary file WriteFileAtomic makes,
// ".NAME.tmp-123", and every temporary directory TempDirFor makes, ".tmp-123".
const tempNamePart = ".tmp-"
// WriteFileAtomic replaces the file at path with data so that a reader, or
// a crash at any moment, finds either the old content or the new, never a
// partial file. The data goes into a temporary file that afero.TempFile
@@ -17,7 +22,7 @@ import (
// temporary file is removed if any step fails.
func WriteFileAtomic(fs afero.Fs, path string, data []byte) error {
tmp, err := afero.TempFile(fs, filepath.Dir(path),
"."+filepath.Base(path)+".tmp-*")
"."+filepath.Base(path)+tempNamePart+"*")
if err != nil {
return fmt.Errorf("failed to create temporary file for %s: %w", path, err)
}
@@ -54,7 +59,7 @@ func WriteFileAtomic(fs afero.Fs, path string, data []byte) error {
// Its name leaves out target's, which may already be as long as a file name
// can be.
func TempDirFor(fs afero.Fs, target string) (string, error) {
dir, err := afero.TempDir(fs, filepath.Dir(filepath.Dir(target)), ".tmp-")
dir, err := afero.TempDir(fs, filepath.Dir(filepath.Dir(target)), tempNamePart)
if err != nil {
return "", fmt.Errorf(
"failed to create temporary directory for %s: %w", target, err)
@@ -63,6 +68,40 @@ func TempDirFor(fs afero.Fs, target string) (string, error) {
return dir, nil
}
// RemoveLeftovers deletes from dir the temporary files of WriteFileAtomic
// and the temporary directories of TempDirFor that a command killed
// part-way left there: each entry whose name starts with "." and holds
// tempNamePart. The caller must hold the state directory lock, so that no
// running command is still using one. A dir that does not exist holds none.
func RemoveLeftovers(fs afero.Fs, dir string) error {
entries, err := afero.ReadDir(fs, dir)
if errors.Is(err, os.ErrNotExist) {
return nil
}
if err != nil {
return fmt.Errorf("failed to read %s: %w", dir, err)
}
for _, entry := range entries {
name := entry.Name()
if !strings.HasPrefix(name, ".") || !strings.Contains(name, tempNamePart) {
continue
}
path := filepath.Join(dir, name)
err = fs.RemoveAll(path)
if err != nil {
return fmt.Errorf("failed to remove %s: %w", path, err)
}
Debug("Removed what an interrupted command left", "path", path)
}
return nil
}
// WriteDir calls write to write the files of the new directory dir into a
// temporary directory from TempDirFor, which is then renamed to dir, so that
// neither a failure nor a crash leaves dir half-written; on a failure the
+95 -2
View File
@@ -1,6 +1,7 @@
package vault
import (
"errors"
"fmt"
"os"
"path/filepath"
@@ -14,6 +15,11 @@ import (
// lockFileName is the file in the state directory that LockStateDir locks.
const lockFileName = "lock"
// finishedMark is what the lock file holds once the command that last held
// the lock has released it. A command killed while holding it leaves the
// file empty.
const finishedMark = "finished\n"
// memFsLock stands in for the lock file on the in-memory filesystem, which
// has no file locks. Every in-memory filesystem in the process shares it.
//
@@ -25,6 +31,12 @@ var memFsLock sync.Mutex
// it. While one command holds it, the next one waits here. Reads take no
// lock: each file or directory a command changes is replaced in a single
// rename, so a reader finds it as it was before or after, never half-made.
// Once it holds the lock, it empties the lock file, and the function it
// returns writes finishedMark there just before releasing the lock, so a
// command killed while holding the lock leaves the mark missing. Finding it
// missing, LockStateDir first deletes the temporary files and directories
// such a command may have left, since no command still using them can be
// running. After a command that finished, it searches nothing.
//
// On the real filesystem the lock is flock(2) on the file "lock" in
// stateDir, which the kernel releases when the process dies, so a killed
@@ -32,16 +44,97 @@ var memFsLock sync.Mutex
// use has no file locks, so a process-wide mutex stands in for flock there.
// Any other filesystem is refused rather than left unlocked.
func LockStateDir(fs afero.Fs, stateDir string) (func(), error) {
var release func()
switch fs.(type) {
case *afero.OsFs:
return flockStateDir(stateDir)
var err error
release, err = flockStateDir(stateDir)
if err != nil {
return nil, err
}
case *afero.MemMapFs:
memFsLock.Lock()
return memFsLock.Unlock, nil
release = memFsLock.Unlock
default:
return nil, fmt.Errorf("%w %T", ErrNoLockForFilesystem, fs)
}
// The lock file is written in place, never replaced: a command waiting
// for flock on the old file would then take a lock nobody else checks.
lockPath := filepath.Join(stateDir, lockFileName)
mark, err := afero.ReadFile(fs, lockPath)
if err != nil || string(mark) != finishedMark {
removeLeftovers(fs, stateDir)
}
err = afero.WriteFile(fs, lockPath, nil, secret.FilePerms)
if err != nil {
release()
return nil, fmt.Errorf("failed to empty lock file %s: %w", lockPath, err)
}
return func() {
// If this fails, the next command searches when it need not.
_ = afero.WriteFile(fs, lockPath, []byte(finishedMark), secret.FilePerms)
release()
}, nil
}
// removeLeftovers deletes the temporary files and directories that commands
// killed part-way left in each directory where secret.WriteFileAtomic and
// secret.TempDirFor make them: the state directory, each vault, each secret
// and each version. Unlocker directories are written whole by
// secret.WriteDir and never changed after, so they hold none. A failure is
// only warned about, and the command goes on.
func removeLeftovers(fs afero.Fs, stateDir string) {
dirs := []string{stateDir}
for _, vaultDir := range subdirs(fs, filepath.Join(stateDir, "vaults.d")) {
dirs = append(dirs, vaultDir)
for _, secretDir := range subdirs(fs, filepath.Join(vaultDir, "secrets.d")) {
dirs = append(dirs, secretDir)
dirs = append(dirs, subdirs(fs, filepath.Join(secretDir, "versions"))...)
}
}
for _, dir := range dirs {
err := secret.RemoveLeftovers(fs, dir)
if err != nil {
secret.Warn("Failed to remove what an interrupted command left",
"error", err)
}
}
}
// subdirs returns the directories in dir: none if dir does not exist, and
// none, with a warning, if it cannot be read.
func subdirs(fs afero.Fs, dir string) []string {
entries, err := afero.ReadDir(fs, dir)
if err != nil {
if !errors.Is(err, os.ErrNotExist) {
secret.Warn("Failed to look for what an interrupted command left",
"directory", dir, "error", err)
}
return nil
}
var dirs []string
for _, entry := range entries {
if entry.IsDir() {
dirs = append(dirs, filepath.Join(dir, entry.Name()))
}
}
return dirs
}
// flockStateDir takes flock(2) on the lock file in stateDir, creating the
+47
View File
@@ -1,9 +1,11 @@
package vault_test
import (
"path/filepath"
"testing"
"time"
"git.eeqj.de/sneak/secret/internal/secret"
"git.eeqj.de/sneak/secret/internal/vault"
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
@@ -121,6 +123,51 @@ func TestLockStateDirFreeAfterPanic(t *testing.T) {
}
}
// TestLockStateDirRemovesLeftoversOnlyAfterKill checks that taking the lock
// deletes a temporary directory a killed command left only when the last
// holder of the lock did not release it. A holder killed while it holds the
// lock leaves the lock file as it is at that moment.
func TestLockStateDirRemovesLeftoversOnlyAfterKill(t *testing.T) {
t.Parallel()
for _, lfs := range lockFilesystems(t) {
t.Run(lfs.name, func(t *testing.T) {
t.Parallel()
lockFile := filepath.Join(lfs.stateDir, "lock")
leftover := filepath.Join(lfs.stateDir, ".tmp-1")
release, err := vault.LockStateDir(lfs.fs, lfs.stateDir)
require.NoError(t, err)
whileHeld, err := afero.ReadFile(lfs.fs, lockFile)
require.NoError(t, err)
release()
require.NoError(t, lfs.fs.MkdirAll(leftover, secret.DirPerms))
release, err = vault.LockStateDir(lfs.fs, lfs.stateDir)
require.NoError(t, err)
release()
exists, err := afero.DirExists(lfs.fs, leftover)
require.NoError(t, err)
assert.True(t, exists, "searched after a holder that finished")
require.NoError(t, afero.WriteFile(lfs.fs, lockFile, whileHeld,
secret.FilePerms))
release, err = vault.LockStateDir(lfs.fs, lfs.stateDir)
require.NoError(t, err)
release()
exists, err = afero.DirExists(lfs.fs, leftover)
require.NoError(t, err)
assert.False(t, exists, "not searched after a holder that was killed")
})
}
}
// TestLockStateDirRefusesOtherFilesystems checks that a filesystem with no
// lock implementation is refused instead of being used unlocked.
func TestLockStateDirRefusesOtherFilesystems(t *testing.T) {