SDB

    SDB is a simple string key/value database based on djb’s cdb disk storage and supports JSON and arrays introspection.

    There’s also the sdbtypes: a vala library that implements several data structures on top of an sdb or a memcache instance.

    SDB supports:

    • namespaces (multiple sdb paths)
    • atomic database sync (never corrupted)
    • bindings for vala, luvit, newlisp and nodejs
    • commandline frontend for sdb databases
    • memcache client and server with sdb backend
    • arrays support (syntax sugar)
    • json parser/getter

    Let’s create a database!

    Using arrays:

    2. 1
    3. foo
    4. 2
    5. foo
    6. bar
    7. 2

    Let’s play with json:

    1. $ sdb d g='{"foo":1,"bar":{"cow":3}}'
    2. $ sdb d g?bar.cow
    3. $ sdb - user='{"id":123}' user?id=99 user?id
    4. 99
    1. $ sdb - foo=bar foo a=3 +a -a
    2. bar
    3. 4
    4. 3
    6. $ sdb -
    7. foo=bar
    8. foo
    9. bar
    10. a=3
    11. +a
    12. 4
    13. -a
    14. 3

    Remove the database

    1. $ rm -f d

    So, you can now do this inside your radare2 sessions!

    Let’s take a simple binary, and check what is already sdbized.

    1. $ r2 -A ./test
    2. [0x08048320]> k **
    3. anal
    4. syscall
    1. [0x08048320]> k bin/**
    2. fd.6
    3. [0x08048320]> k bin/fd.6/*
    4. archs=0:0:x86:32

    The file corresponding to the sixth file descriptor is a x86_32 binary.

    1. [0x08048320]> k anal/meta/*
    2. meta.s.0x80484d0=12,SGVsbG8gd29ybGQ=
    3. [...]
    4. [0x08048320]> ?b64- SGVsbG8gd29ybGQ=
    5. Hello world

    Strings are stored encoded in base64.

    List namespaces

    1. k **

    List keys

    1. k *
    2. k anal/*

    Set a key

    1. k foo=bar

    Get the value of a key

    1. k foo

    List all syscalls

    1. k syscall/*~^0x

    List all comments

    Show a comment at given offset: