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feat(vuln): Handle scanning conan v2.x lockfiles #6357

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merged 3 commits into from
Apr 29, 2024

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dus7eh
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@dus7eh dus7eh commented Mar 20, 2024

Description

Add capability of parsing conan v2.x lockfile
Note 1: newer conan.lock contains fewer information in respect to its predecessor.
This is described in https://github.com/conan-io/tribe/blob/main/design/034-new_lockfiles.md.
Thus indirect dependencies are not flagged. Only requirements node is parsed.

Makes vuln and sbom reports produce output containing dependencies from conan.lock.

Note 2: to get detailed info about indirect dependencies and test only dependencies parsing output of conan graph info might be necessary but this is not considered here.

Related issues

Checklist

  • I've read the guidelines for contributing to this repository.
  • I've followed the conventions in the PR title.
  • I've added tests that prove my fix is effective or that my feature works.
  • I've updated the documentation with the relevant information (if needed).
  • I've added usage information (if the PR introduces new options)
  • I've included a "before" and "after" example to the description (if the PR is a user interface change).

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@DmitriyLewen DmitriyLewen left a comment

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Hello @dus7eh
Thanks for your work!

Left comments. Take a look, please.

Also you need to update docs (use mage docs:generate command to see changes in browser) - V2 doesn't support dependency tree.

Regards, Dmitriy

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@dus7eh dus7eh force-pushed the parse-conan-v2-lockfile branch from 650bf9c to 954ec89 Compare April 3, 2024 22:38
@dus7eh
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dus7eh commented Apr 9, 2024

Hello @dus7eh Thanks for your work!

Left comments. Take a look, please.

Also you need to update docs (use mage docs:generate command to see changes in browser) - V2 doesn't support dependency tree.

Regards, Dmitriy

Updated all mentioned issues

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Hello @dus7eh
Thanks for your changes!

I left 1 small comment.
Also resolve conflict please.

Regards, Dmitriy

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@dus7eh dus7eh force-pushed the parse-conan-v2-lockfile branch from 954ec89 to 89c1d14 Compare April 16, 2024 22:03
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@dus7eh Thanks for your work!

LGTM.

@knqyf263 take a look, when you have time, please.

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Note 1: newer conan.lock contains fewer information in respect to its predecessor.
This is described in https://github.com/conan-io/tribe/blob/main/design/034-new_lockfiles.md.
Thus indirect dependencies are not flagged. Only requirements node is parsed.

It sounds like we need to parse conanfile.txt to identify direct dependencies. Please correct me if I'm wrong.

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lockfiles v2 doesn't contain info about child dependencies:
e.g. for pulseaudio:

root@5acf6dd571c3:/app# cat conan.lock 
{
    "version": "0.5",
    "requires": [
        "zlib/1.3.1#f52e03ae3d251dec704634230cd806a2%1708593606.497",
        "xorg/system#f626cbdd0ba57d9c53bce2d8b9362fad%1709213216.576",
        "vorbis/1.3.7#37e58f52e59a6232199b34ef402714a6%1699046045.52",
        "pulseaudio/17.0#8d7ad74a97a376caca6ef0a032d25ad3%1710538592.785",
        "opus/1.4#54631f551fc450783fb2df8cd63f80a2%1692264047.36",
        "openssl/3.2.1#c7b554068caae5eda12b735ea6f23d70%1712227628.919",
        "ogg/1.3.5#062626875f5c8c59f069f76f148098ef%1676030023.878",
        "mpg123/1.31.2#ce831c936b2284e2066ab3dc58a2628e%1697088458.795",
        "libsndfile/1.2.2#b3662f832e29507e8d9840a43737cc14%1701864257.026",
        "libmp3lame/3.100#44b12d19316eb2b223d98d3e75dae438%1674992501.853",
        "libiconv/1.17#73fefc1b696e069df90fd1d18aa63edd%1707122814.387",
        "libgettext/0.22#2c87563d7a69544dd9379f038aca3b0b%1692434363.136",
        "flac/1.4.2#6a17595ab773d2de32e18b5d3b24afff%1703803162.098"
    ],
    "build_requires": [
        "pkgconf/2.1.0#27f44583701117b571307cf5b5fe5605%1701537936.436",
        "pkgconf/2.0.3#f996677e96e61e6552d85e83756c328b%1696606182.229",
        "ninja/1.11.1#77587f8c8318662ac8e5a7867eb4be21%1684431244.21",
        "meson/1.3.2#d1125ba555ec1a94f165a3412fdf7f88%1708699393.753",
        "meson/1.2.2#04bdfb85d665c82b08a3510aee3ffd19%1702568761.764",
        "m4/1.4.19#b38ced39a01e31fef5435bc634461fd2%1700758725.451",
        "gnu-config/cci.20210814#dc430d754f465e8c74463019672fb97b%1701248168.479"
    ],
    "python_requires": [],
    "config_requires": []
}

so it won't help users much.
But conan supports graph - https://docs.conan.io/2/reference/commands/graph.html

example
{
    "graph": {
        "nodes": {
            "0": {
                "ref": "conanfile",
                "id": "0",
                "recipe": "Consumer",
                "package_id": null,
                "prev": null,
                "rrev": null,
                "rrev_timestamp": null,
                "prev_timestamp": null,
                "remote": null,
                "binary_remote": null,
                "build_id": null,
                "binary": null,
                "invalid_build": false,
                "info_invalid": null,
                "name": null,
                "user": null,
                "channel": null,
                "url": null,
                "license": null,
                "author": null,
                "description": null,
                "homepage": null,
                "build_policy": null,
                "upload_policy": null,
                "revision_mode": "hash",
                "provides": null,
                "deprecated": null,
                "win_bash": null,
                "win_bash_run": null,
                "default_options": null,
                "options_description": null,
                "version": null,
                "topics": null,
                "package_type": "unknown",
                "settings": {
                    "os": "Linux",
                    "arch": "armv8",
                    "compiler": "gcc",
                    "compiler.cppstd": "gnu17",
                    "compiler.libcxx": "libstdc++11",
                    "compiler.version": "12",
                    "build_type": "Release"
                },
                "options": {},
                "options_definitions": {},
                "generators": [
                    "CMakeDeps",
                    "CMakeToolchain"
                ],
                "python_requires": null,
                "system_requires": {},
                "recipe_folder": null,
                "source_folder": null,
                "build_folder": null,
                "generators_folder": null,
                "package_folder": null,
                "cpp_info": {
                    "root": {
                        "includedirs": [
                            "include"
                        ],
                        "srcdirs": null,
                        "libdirs": [
                            "lib"
                        ],
                        "resdirs": null,
                        "bindirs": [
                            "bin"
                        ],
                        "builddirs": null,
                        "frameworkdirs": null,
                        "system_libs": null,
                        "frameworks": null,
                        "libs": null,
                        "defines": null,
                        "cflags": null,
                        "cxxflags": null,
                        "sharedlinkflags": null,
                        "exelinkflags": null,
                        "objects": null,
                        "sysroot": null,
                        "requires": null,
                        "properties": null
                    }
                },
                "conf_info": {},
                "label": "conanfile.txt",
                "dependencies": {
                    "1": {
                        "ref": "pulseaudio/17.0",
                        "run": true,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": true,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": true,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "2": {
                        "ref": "libgettext/0.22",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "3": {
                        "ref": "libiconv/1.17",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "4": {
                        "ref": "libsndfile/1.2.2",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "6": {
                        "ref": "vorbis/1.3.7",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "7": {
                        "ref": "flac/1.4.2",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "5": {
                        "ref": "ogg/1.3.5",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "8": {
                        "ref": "opus/1.4",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "9": {
                        "ref": "mpg123/1.31.2",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "13": {
                        "ref": "libmp3lame/3.100",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "15": {
                        "ref": "xorg/system",
                        "run": true,
                        "libs": false,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "16": {
                        "ref": "openssl/3.2.1",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    },
                    "17": {
                        "ref": "zlib/1.3.1",
                        "run": false,
                        "libs": false,
                        "skip": true,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": null,
                        "visible": true
                    }
                },
                "context": "host",
                "test": false
            },
            "1": {
                "ref": "pulseaudio/17.0#8d7ad74a97a376caca6ef0a032d25ad3",
                "id": "1",
                "recipe": "Cache",
                "package_id": "f6c7066ca0f97b28acb83b1cc0f18092072d6578",
                "prev": null,
                "rrev": "8d7ad74a97a376caca6ef0a032d25ad3",
                "rrev_timestamp": 1710538592.785,
                "prev_timestamp": null,
                "remote": null,
                "binary_remote": null,
                "build_id": null,
                "binary": "Missing",
                "invalid_build": false,
                "info_invalid": null,
                "name": "pulseaudio",
                "user": null,
                "channel": null,
                "url": "https://github.com/conan-io/conan-center-index",
                "license": "LGPL-2.1",
                "author": null,
                "description": "PulseAudio is a sound system for POSIX OSes, meaning that it is a proxy for sound applications.",
                "homepage": "http://pulseaudio.org/",
                "build_policy": null,
                "upload_policy": null,
                "revision_mode": "hash",
                "provides": null,
                "deprecated": null,
                "win_bash": null,
                "win_bash_run": null,
                "default_options": {
                    "with_glib": false,
                    "with_fftw": false,
                    "with_x11": true,
                    "with_openssl": true,
                    "with_dbus": false
                },
                "options_description": null,
                "version": "17.0",
                "topics": [
                    "sound",
                    "audio",
                    "sound-server"
                ],
                "package_type": "shared-library",
                "settings": {
                    "os": "Linux",
                    "arch": "armv8",
                    "compiler": "gcc",
                    "compiler.version": "12",
                    "build_type": "Release"
                },
                "options": {
                    "with_dbus": "False",
                    "with_glib": "False",
                    "with_openssl": "True",
                    "with_x11": "True"
                },
                "options_definitions": {
                    "with_glib": [
                        "True",
                        "False"
                    ],
                    "with_x11": [
                        "True",
                        "False"
                    ],
                    "with_openssl": [
                        "True",
                        "False"
                    ],
                    "with_dbus": [
                        "True",
                        "False"
                    ]
                },
                "generators": [],
                "python_requires": null,
                "system_requires": {},
                "recipe_folder": "/root/.conan2/p/pulsee2b7eff0be0d2/e",
                "source_folder": null,
                "build_folder": null,
                "generators_folder": null,
                "package_folder": null,
                "cpp_info": {
                    "root": {
                        "includedirs": [
                            "include"
                        ],
                        "srcdirs": null,
                        "libdirs": [
                            "lib"
                        ],
                        "resdirs": null,
                        "bindirs": [
                            "bin"
                        ],
                        "builddirs": null,
                        "frameworkdirs": null,
                        "system_libs": null,
                        "frameworks": null,
                        "libs": null,
                        "defines": null,
                        "cflags": null,
                        "cxxflags": null,
                        "sharedlinkflags": null,
                        "exelinkflags": null,
                        "objects": null,
                        "sysroot": null,
                        "requires": null,
                        "properties": null
                    }
                },
                "conf_info": {},
                "label": "pulseaudio/17.0",
                "info": {
                    "settings": {
                        "os": "Linux",
                        "arch": "armv8",
                        "compiler": "gcc",
                        "compiler.version": "12",
                        "build_type": "Release"
                    },
                    "options": {
                        "with_dbus": "False",
                        "with_glib": "False",
                        "with_openssl": "True",
                        "with_x11": "True"
                    },
                    "requires": [
                        "libgettext/0.22#2c87563d7a69544dd9379f038aca3b0b:41e721d904c9ddcfa663c4fb15ecba9da7057704",
                        "libiconv/1.17#73fefc1b696e069df90fd1d18aa63edd:7e0918accf1698c5e54c34e18764ad9156b62d25",
                        "libsndfile/1.2.2#b3662f832e29507e8d9840a43737cc14:bd5b48e622e983e94e2cf5da5618d44bf5983f49",
                        "vorbis/1.3.7#37e58f52e59a6232199b34ef402714a6:b30f0b06917112843bb7972037aa6e8ca1463ef3",
                        "flac/1.4.2#6a17595ab773d2de32e18b5d3b24afff:06cc7ca96b14b2063dfeeeb23a530cca2e65b644",
                        "ogg/1.3.5#062626875f5c8c59f069f76f148098ef:7e0918accf1698c5e54c34e18764ad9156b62d25",
                        "opus/1.4#54631f551fc450783fb2df8cd63f80a2:5b7cfe3a19ddb78609cc708138bb9ebd4d24c1a7",
                        "mpg123/1.31.2#ce831c936b2284e2066ab3dc58a2628e:0bc5cf269869489db05381698a16d7fd566053c1",
                        "libmp3lame/3.100#44b12d19316eb2b223d98d3e75dae438:7e0918accf1698c5e54c34e18764ad9156b62d25",
                        "xorg/system",
                        "openssl/3.2.1#c7b554068caae5eda12b735ea6f23d70:469765602cb39c441c3f8afb43977bb72b8b9a93",
                        "zlib/1.3.1#f52e03ae3d251dec704634230cd806a2:7e0918accf1698c5e54c34e18764ad9156b62d25"
                    ]
                },
                "dependencies": {
                    "2": {
                        "ref": "libgettext/0.22",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": true,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": true,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "3": {
                        "ref": "libiconv/1.17",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": true,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": true,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "4": {
                        "ref": "libsndfile/1.2.2",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": true,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": true,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "6": {
                        "ref": "vorbis/1.3.7",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "7": {
                        "ref": "flac/1.4.2",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "5": {
                        "ref": "ogg/1.3.5",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "8": {
                        "ref": "opus/1.4",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "9": {
                        "ref": "mpg123/1.31.2",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "13": {
                        "ref": "libmp3lame/3.100",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": false,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "15": {
                        "ref": "xorg/system",
                        "run": true,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": true,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": true,
                        "package_id_mode": "minor_mode",
                        "visible": true
                    },
                    "16": {
                        "ref": "openssl/3.2.1",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": true,
                        "build": false,
                        "transitive_headers": null,
                        "transitive_libs": null,
                        "headers": true,
                        "package_id_mode": "full_mode",
                        "visible": true
                    },
                    "17": {
                        "ref": "zlib/1.3.1",
                        "run": false,
                        "libs": true,
                        "skip": false,
                        "test": false,
                        "force": false,
                        "direct": false,
                        "build": false,
                        "transitive_headers": null,
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Looks like we can parse cache dir - i do this for licenses in #6329.
We will then need to parse conanfile.txt to detect direct dirs.

But User can use conanfile.py instead of conanfile.txt (https://docs.conan.io/2/reference/conanfile_txt.html).
But if i understand correctly - conanfile.txt is toml file. So parse will not be a problem and we can add parse of it.
@dus7eh Can you share your experience - how often do users use conanfile.txt?

@dus7eh
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dus7eh commented Apr 23, 2024

It's hard for me to tell which is the preferred way of working with conan. This depends a lot on a specific usecase. For simple library consumers conanfile.txt would be the way to go. However, if you're trying to perform some builds to diferent targets, apply configuration validation logic, or create a package yourself then you should be picking conanfile.py.
Here's a sample article about the flexability that the py script brings.

Best would be probably to leave handling of the dependency graph to conan itself (via conan graph info -f json . command) not to rewrite the same logic in trivy (graph info). Although, this would put a necessity of having conan as a dependency or put a requirement for the user to have it preinstalled in the env where trivy is used.

@knqyf263
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Best would be probably to leave handling of the dependency graph to conan itself (via conan graph info -f json . command) not to rewrite the same logic in trivy (graph info). Although, this would put a necessity of having conan as a dependency or put a requirement for the user to have it preinstalled in the env where trivy is used.

We wouldn't go down this way.
https://aquasecurity.github.io/trivy/v0.50/community/principles/#external-dependency-free-single-binary

@DmitriyLewen
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@knqyf263 @dus7eh I did some research, and found some difficulties with parsing cache directory to detect child deps:
It looks like only conanfile.py fileы contain info about child deps:

root@3472c8d16413:/app# grep -r "libiconv" /root/.conan2/p/pulsee2b7eff0be0d2
/root/.conan2/p/pulsee2b7eff0be0d2/e/conanfile.py:        self.requires("libiconv/1.17")
/root/.conan2/p/pulsee2b7eff0be0d2/e/conanfile.py:        self.cpp_info.components["pulse"].requires = ["libiconv::libiconv", "libsndfile::libsndfile", "libgettext::libgettext"]

conanfile.py contains child deps in requires field.
But conanfile.py is Python file. So we can see:

@knqyf263
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@DmitriyLewen So, do you think it's hard to support the dependency graph for Conan v2 lock files? If so, we can merge this PR and work on the dependency graph later.

@DmitriyLewen
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If so, we can merge this PR and work on the dependency graph later.

let's do this because it looks like it can't be done using Go 😞

@dus7eh dus7eh force-pushed the parse-conan-v2-lockfile branch from 851cb9b to 3fb527e Compare April 25, 2024 09:38
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dus7eh commented Apr 29, 2024

@DmitriyLewen So, do you think it's hard to support the dependency graph for Conan v2 lock files? If so, we can merge this PR and work on the dependency graph later.

I'm all for that if I have anything to say :) Graph can be dealt with independently giving some basic support to conan v2 sooner than later.

@knqyf263 knqyf263 added this pull request to the merge queue Apr 29, 2024
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Thank you guys!

Merged via the queue into aquasecurity:main with commit 29b8faf Apr 29, 2024
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fl0pp5 pushed a commit to altlinux/trivy that referenced this pull request May 6, 2024
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feat(c): conan 2.x lockfile support
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