Name

lua-resty-libinjection - LuaJIT FFI bindings for libinjection

Status

This library is in active development and is production ready

Description

This library provides FFI bindings for libinjection, a SQL/SQLi and XSS tokenizer and analyzer.

Installation

Install this library as you would any other OpenResty lua module. The libinjection shared object file is required to live in your lua_package_cpath, so you should symlink or copy the .so file to the appropriate location.

Synopsis

  access_by_lua_block {
    local libinjection = require "resty.libinjection"

    -- simple SQLi API
    local issqli, fingerprint = libinjection.sqli(string)

    -- context-specific bindings are also provided
    issqli, fingerprint = libinjection.sqli_noquote(string)
    issqli, fingerprint = libinjection.sqli_singlequote(string)
    issqli, fingerprint = libinjection.sqli_doublequote(string)

    --simple XSS API
    local isxss = libinjection.xss(string)

    -- context-specific bindings
    isxss = libinjection.xss_data_state(string)
    isxss = libinjection.xss_noquote(string)
    isxss = libinjection.xss_singlequote(string)
    isxss = libinjection.xss_doublequote(string)
    isxss = libinjection.xss_backquote(string)
  }

Usage

libinjection.sqli

syntax: issqli, fingerprint = libinjection.sqli(string)

Given a string, returns a boolean issqli representing if SQLi was detected, and a string fingerprint representing the libinjection fingerprint detected. In most cases, this is the preferable option; second-level API bindings noted below may be slightly more efficient in specific contexts.

libinjection.sqli_noquote

syntax: issqli, fingerprint = libinjection.sqli_noquote(string)

Like libinjection.sqli, in the specific context of an "as-is" string.

libinjection.sqli_singlequote

syntax: issqli, fingerprint = libinjection.sqli_singlequote(string)

Like libinjection.sqli, in the specific context of a single-quoted (') string.

libinjection.sqli_doublequote

syntax: issqli, fingerprint = libinjection.sqli_doublelequote(string)

Like libinjection.sqli, in the specific context of a double-quoted (") string.

libinjection.xss

syntax: isxss = libinjection.xss(string)

ALPHA version of XSS detector. Given a string, returns a boolean isxss denoting if XSS was detected. In most cases, this is the preferable option; second-level API bindings noted below may be slight more efficient in specific contexts.

libinjection.xss_data_state

syntax: isxss = libinjection.xss_data_state(string)

Like libinjection.xss, but run with only the DATA_STATE flag.

libinjection.xss_noquote

syntax: isxss = libinjection.xss_noquote(string)

Like libinjection.xss, but run with only the VALUE_NO_QUOTE flag.

libinjection.xss_singlequote

syntax: isxss = libinjection.xss_singlequote(string)

Like libinjection.xss, but run with only the VALUE_SINGLE_QUOTE flag.

libinjection.xss_doublequote

syntax: isxss = libinjection.xss_doublequote(string)

Like libinjection.xss, but run with only the VALUE_DOUBLE_QUOTE flag.

libinjection.xss_backquote

syntax: isxss = libinjection.xss_backquote(string)

Like libinjection.xss, but run with only the VALUE_BACK_QUOTE flag.

License

Copyright 2017 Robert Paprocki

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Bugs

Please report bugs by creating a ticket with the GitHub issue tracker.