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go-cpe

Build Status Coverage Status Go Report Card GoDoc MIT License

A Go library for CPE(A Common Platform Enumeration 2.3)

go-cpe is a implementation of the CPE Naming and Matching algorithms, as described in NIST IRs 7695 and 7696.

For the reference Java implementation, see: https://cpe.mitre.org/specification/CPE_Reference_Implementation_Sep2011.zipx

Installation and Usage

Installation can be done with a normal go get:

$ go get github.com/knqyf263/go-cpe/...

Compare

See example

package main

import (
	"fmt"

	"github.com/knqyf263/go-cpe/matching"
	"github.com/knqyf263/go-cpe/naming"
)

func main() {
	wfn, err := naming.UnbindURI("cpe:/a:microsoft:internet_explorer%01%01%01%01:8%02:beta")
	if err != nil {
		fmt.Println(err)
		return
	}
	wfn2, err := naming.UnbindFS(`cpe:2.3:a:microsoft:internet_explorer:8.0.6001:beta:*:*:*:*:*:*`)
	if err != nil {
		fmt.Println(err)
		return
	}
	fmt.Println(matching.IsDisjoint(wfn, wfn2))
	fmt.Println(matching.IsEqual(wfn, wfn2))
	fmt.Println(matching.IsSubset(wfn, wfn2))
	fmt.Println(matching.IsSuperset(wfn, wfn2))
}

Contribute

  1. fork a repository: github.com/knqyf263/go-cpe to github.com/you/repo
  2. get original code: go get github.com/knqyf263/go-cpe
  3. work on original code
  4. add remote to your repo: git remote add myfork https://github.com/you/repo.git
  5. push your changes: git push myfork
  6. create a new Pull Request

License

MIT

Author

Teppei Fukuda

go-cpe's People

Contributors

knqyf263 avatar sadayuki-matsuno avatar santosh653 avatar

Stargazers

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Watchers

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Forkers

sadayuki-matsuno triplekill santosh653 pombredanne riza noqcks gsoc2 karelorigin

go-cpe's Issues

is this repo still alive?

I noticed that the last issue was not responded.
But still, I found that the matching doesnt seem to work as expected:

` cpe1_param := strings.ReplaceAll( c.QueryParam("cpe1"), ".", "\.")
cpe2_param := strings.ReplaceAll(c.QueryParam("cpe2"), ".", "\.")

           if matching.IsDisjoint(cpe1, cpe2) {
		match = "IsDisjoint"
	}
	if matching.IsEqual(cpe1, cpe2) {
		match = "IsEqual"
	}
	if matching.IsSuperset(cpe1, cpe2) {
		match = "IsSuperset"
	}
	if matching.IsSubset(cpe1, cpe2) {
		match = "IsSubset"
	}

`
match will always be the last one, it doesn't matter the condition. In other words, if I invert the order of matching.IsSubset by matching.IsSuperset, then match = "IsSuperset"

Which means that the matching doesn't seems to be working as expected..

Version matching results are incorrect

Version matching seems to only consider a prefix. For example, when checking whether cpe:2.3:o:linux:linux_kernel:4.4.1:*:*:*:*:*:*:* is a superset of cpe:2.3:o:linux:linux_kernel:4.4.19:*:*:*:*:*:*:*, the answer comes back as true when I would have expected it to be false.

Likewise for 3.10.2 with 3.10.20, and other such cases.

gore version 0.3.0  :help for help
gore> :import github.com/knqyf263/go-cpe/common
gore> :import github.com/knqyf263/go-cpe/matching
gore> :import github.com/knqyf263/go-cpe/naming
gore> a, err := naming.UnbindFS("cpe:2.3:o:linux:linux_kernel:4.4.1:*:*:*:*:*:*:*")
common.WellFormedName{"target_hw":common.LogicalValue{Any:true, Na:false}, "part":"o", "product":"linux_kernel", "version":"4\\.4\\.1", "update":common.LogicalValue{Any:true, Na:false}, "edition":common.LogicalValue{Any:true, Na:false}, "language":common.LogicalValue{Any:true, Na:false}, "sw_edition":common.LogicalValue{Any:true, Na:false}, "target_sw":common.LogicalValue{Any:true, Na:false}, "other":common.LogicalValue{Any:true, Na:false}, "vendor":"linux"}
<nil>
gore> b, err := naming.UnbindFS("cpe:2.3:o:linux:linux_kernel:4.4.19:*:*:*:*:*:*:*")
common.WellFormedName{"target_sw":common.LogicalValue{Any:true, Na:false}, "target_hw":common.LogicalValue{Any:true, Na:false}, "part":"o", "vendor":"linux", "update":common.LogicalValue{Any:true, Na:false}, "edition":common.LogicalValue{Any:true, Na:false}, "language":common.LogicalValue{Any:true, Na:false}, "sw_edition":common.LogicalValue{Any:true, Na:false}, "other":common.LogicalValue{Any:true, Na:false}, "product":"linux_kernel", "version":"4\\.4\\.19"}
<nil>
gore> matching.IsSuperset(a, b)
true

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