# BlobsFile

[![builds.sr.ht status](https://builds.sr.ht/~tsileo/blobsfile.svg)](https://builds.sr.ht/~tsileo/blobsfile?)
&nbsp; &nbsp;[![Godoc Reference](https://godoc.org/a4.io/blobsfile?status.svg)](https://godoc.org/a4.io/blobsfile)

*BlobsFile* is an append-only (i.e. no update and no delete) content-addressed *blob store* (using [BLAKE2b](https://blake2.net/) as hash function).

It draws inspiration from Facebook's [Haystack](http://202.118.11.61/papers/case%20studies/facebook.pdf), blobs are stored in flat files (called _BlobFile_) and indexed by a small [kv](https://github.com/cznic/kv) database for fast lookup.

*BlobsFile* is [BlobStash](https://github.com/tsileo/blobstash)'s storage engine.

## Features

 - Durable (data is fsynced before returning)
 - Immutable (append-only, can't mutate or delete blobs)
 - Optional compression (Snappy or Zstandard)
 - Extra parity data is added to each _BlobFile_ (using Reed-Solomon error correcting code), allowing the database to repair itself in case of corruption.
   - The test suite is literraly punching holes at random places


Socket Acquires Coana to Bring Reachability Analysis to Every Appsec Team

a4.io/blobsfile

blobsfile

(Experimental) An ambiguous license classifier was found.

What is an ambiguous license classifier?

Ambiguous License Classifier

Source files are encoded using a non-standard text encoding.

What is bad text encoding?

Bad text encoding

Package version is not a valid semantic version (semver).

What is bad semver?

Bad semver

Package has dependencies with an invalid semantic version. This could be a sign of beta, low quality, or unmaintained dependencies.

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Bad dependency semver

Source files contain bidirectional unicode control characters. This could indicate a Trojan source supply chain attack. See: trojansource.codes for more information.

What are bidirectional unicode control characters?

Bidirectional unicode control characters

This package has multiple bin scripts with the same name. This can cause non-deterministic behavior when installing or could be a sign of a supply chain attack.

What is bin script confusion?

Bin script confusion

Semantic versions published out of chronological order.

What is a chronological version anomaly?

Chronological version anomaly

Project maintainer's SSH key has been compromised.

What is a compromised SSH key?

Compromised SSH key

(Experimental) Copyleft license information was found.

What do I need to know about license files?

Copyleft License

Contains a Critical Common Vulnerability and Exposure (CVE).

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Title

Critical CVE

Contains a high severity Common Vulnerability and Exposure (CVE).

What is a CVE?

High CVE

Uses debug, reflection and dynamic code execution features.

What is debug access?

Debug access

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Deprecated

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Deprecated SPDX exception

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Deprecated license

Package name is similar to other popular packages and may not be the package you want.

What is a typosquat?

Possible typosquat attack

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Dynamic require

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What is an empty package?

Empty package

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Environment variable access

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What are extraneous dependencies?

Name

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What are file dependencies?

File dependency

Accesses the file system, and could potentially read sensitive data.

What is filesystem access?

Filesystem access

Package has a dependency with a floating version range. This can cause issues if the dependency publishes a new major version.

What are wildcard dependencies?

Wildcard dependency

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What are git dependencies?

Git dependency

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GitHub dependency

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What is an AI-detected potential code anomaly?

AI-detected potential code anomaly

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AI-detected potential malware

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AI-detected potential security risk

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Native code

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High entropy strings

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Unicode homoglyphs

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HTTP dependency

Install scripts are run when the package is installed. The majority of malware in npm is hidden in install scripts.

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Install scripts

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Invalid manifest file

Source files contain invisible characters. This could indicate source obfuscation or a supply chain attack.

What are invisible characters?

Invisible chars

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License change

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License exception

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License Policy Violation

Contains long string literals, which may be a sign of obfuscated or packed code.

What's wrong with long strings?

Long strings

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

What is a major refactor?

Major refactor

This package is malware. We have asked the package registry to remove it.

What is known malware?

Known malware

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Manifest confusion

Contains a medium severity Common Vulnerability and Exposure (CVE).

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Medium CVE

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Low CVE

This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

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Minified code

(Experimental) A package's licensing information has fine-grained problems.

Misc. License Issues

The package was published by an npm account that no longer exists.

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Non-existent author

A required dependency is not declared in package.json and may prevent the package from working.

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Missing dependency

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Missing license

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(Experimental) Package contains multiple licenses.

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Mixed license

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Modified license exception

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Modified license

What is network access?

Network access

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What is new author?

New author

Package does not specify a list of contributors or an author in package.json.

Why is contributor and author data important?

No contributors or author data

Package does not have a linked bug tracker in package.json.

Why are bug trackers important?

No bug tracker

(Experimental) License information could not be found.

No License Found

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Why are READMEs important?

No README

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No repository

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What does no tests mean?

No tests

Package is not semver >=1. This means it is not stable and does not support ^ ranges.

a4.io/blobsfile

BlobsFile

Features

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