mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-22 23:13:19 +00:00
38771badd3
If a package's meta has `knownVulnerabilities`, like so:
stdenv.mkDerivation {
name = "foobar-1.2.3";
...
meta.knownVulnerabilities = [
"CVE-0000-00000: remote code execution"
"CVE-0000-00001: local privilege escalation"
];
}
and a user attempts to install the package, they will be greeted with
a warning indicating that maybe they don't want to install it:
error: Package ‘foobar-1.2.3’ in ‘...default.nix:20’ is marked as insecure, refusing to evaluate.
Known issues:
- CVE-0000-00000: remote code execution
- CVE-0000-00001: local privilege escalation
You can install it anyway by whitelisting this package, using the
following methods:
a) for `nixos-rebuild` you can add ‘foobar-1.2.3’ to
`nixpkgs.config.permittedInsecurePackages` in the configuration.nix,
like so:
{
nixpkgs.config.permittedInsecurePackages = [
"foobar-1.2.3"
];
}
b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
‘foobar-1.2.3’ to `permittedInsecurePackages` in
~/.config/nixpkgs/config.nix, like so:
{
permittedInsecurePackages = [
"foobar-1.2.3"
];
}
Adding either of these configurations will permit this specific
version to be installed. A third option also exists:
NIXPKGS_ALLOW_INSECURE=1 nix-build ...
though I specifically avoided having a global file-based toggle to
disable this check. This way, users don't disable it once in order to
get a single package, and then don't realize future packages are
insecure.
427 lines
17 KiB
Nix
427 lines
17 KiB
Nix
let lib = import ../../../lib; in lib.makeOverridable (
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{ system, name ? "stdenv", preHook ? "", initialPath, cc, shell
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, allowedRequisites ? null, extraAttrs ? {}, overrides ? (self: super: {}), config
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, # The `fetchurl' to use for downloading curl and its dependencies
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# (see all-packages.nix).
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fetchurlBoot
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, setupScript ? ./setup.sh
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, extraBuildInputs ? []
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, __stdenvImpureHostDeps ? []
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, __extraImpureHostDeps ? []
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, stdenvSandboxProfile ? ""
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, extraSandboxProfile ? ""
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}:
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let
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allowUnfree = config.allowUnfree or false || builtins.getEnv "NIXPKGS_ALLOW_UNFREE" == "1";
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whitelist = config.whitelistedLicenses or [];
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blacklist = config.blacklistedLicenses or [];
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ifDarwin = attrs: if system == "x86_64-darwin" then attrs else {};
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onlyLicenses = list:
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lib.lists.all (license:
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let l = lib.licenses.${license.shortName or "BROKEN"} or false; in
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if license == l then true else
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throw ''‘${showLicense license}’ is not an attribute of lib.licenses''
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) list;
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mutuallyExclusive = a: b:
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(builtins.length a) == 0 ||
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(!(builtins.elem (builtins.head a) b) &&
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mutuallyExclusive (builtins.tail a) b);
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areLicenseListsValid =
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if mutuallyExclusive whitelist blacklist then
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assert onlyLicenses whitelist; assert onlyLicenses blacklist; true
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else
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throw "whitelistedLicenses and blacklistedLicenses are not mutually exclusive.";
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hasLicense = attrs:
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attrs ? meta.license;
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hasWhitelistedLicense = assert areLicenseListsValid; attrs:
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hasLicense attrs && builtins.elem attrs.meta.license whitelist;
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hasBlacklistedLicense = assert areLicenseListsValid; attrs:
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hasLicense attrs && builtins.elem attrs.meta.license blacklist;
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allowBroken = config.allowBroken or false || builtins.getEnv "NIXPKGS_ALLOW_BROKEN" == "1";
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isUnfree = licenses: lib.lists.any (l:
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!l.free or true || l == "unfree" || l == "unfree-redistributable") licenses;
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# Alow granular checks to allow only some unfree packages
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# Example:
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# {pkgs, ...}:
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# {
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# allowUnfree = false;
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# allowUnfreePredicate = (x: pkgs.lib.hasPrefix "flashplayer-" x.name);
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# }
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allowUnfreePredicate = config.allowUnfreePredicate or (x: false);
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# Check whether unfree packages are allowed and if not, whether the
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# package has an unfree license and is not explicitely allowed by the
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# `allowUNfreePredicate` function.
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hasDeniedUnfreeLicense = attrs:
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!allowUnfree &&
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hasLicense attrs &&
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isUnfree (lib.lists.toList attrs.meta.license) &&
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!allowUnfreePredicate attrs;
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allowInsecureDefaultPredicate = x: builtins.elem x.name (config.permittedInsecurePackages or []);
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allowInsecurePredicate = x: (config.allowUnfreePredicate or allowInsecureDefaultPredicate) x;
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hasAllowedInsecure = attrs:
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(attrs.meta.knownVulnerabilities or []) == [] ||
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allowInsecurePredicate attrs ||
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builtins.getEnv "NIXPKGS_ALLOW_INSECURE" == "1";
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showLicense = license: license.shortName or "unknown";
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defaultNativeBuildInputs = extraBuildInputs ++
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[ ../../build-support/setup-hooks/move-docs.sh
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../../build-support/setup-hooks/compress-man-pages.sh
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../../build-support/setup-hooks/strip.sh
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../../build-support/setup-hooks/patch-shebangs.sh
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../../build-support/setup-hooks/multiple-outputs.sh
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../../build-support/setup-hooks/move-sbin.sh
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../../build-support/setup-hooks/move-lib64.sh
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../../build-support/setup-hooks/set-source-date-epoch-to-latest.sh
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cc
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];
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# `mkDerivation` wraps the builtin `derivation` function to
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# produce derivations that use this stdenv and its shell.
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#
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# See also:
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#
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# * https://nixos.org/nixpkgs/manual/#sec-using-stdenv
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# Details on how to use this mkDerivation function
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#
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# * https://nixos.org/nix/manual/#ssec-derivation
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# Explanation about derivations in general
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mkDerivation =
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{ buildInputs ? []
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, nativeBuildInputs ? []
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, propagatedBuildInputs ? []
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, propagatedNativeBuildInputs ? []
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, crossConfig ? null
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, meta ? {}
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, passthru ? {}
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, pos ? null # position used in error messages and for meta.position
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, separateDebugInfo ? false
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, outputs ? [ "out" ]
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, __impureHostDeps ? []
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, __propagatedImpureHostDeps ? []
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, sandboxProfile ? ""
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, propagatedSandboxProfile ? ""
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, ... } @ attrs:
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let # Rename argumemnts to avoid cycles
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buildInputs__ = buildInputs;
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nativeBuildInputs__ = nativeBuildInputs;
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propagatedBuildInputs__ = propagatedBuildInputs;
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propagatedNativeBuildInputs__ = propagatedNativeBuildInputs;
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in let
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getNativeDrv = drv: drv.nativeDrv or drv;
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getCrossDrv = drv: drv.crossDrv or drv;
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nativeBuildInputs = map getNativeDrv nativeBuildInputs__;
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buildInputs = map getCrossDrv buildInputs__;
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propagatedBuildInputs = map getCrossDrv propagatedBuildInputs__;
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propagatedNativeBuildInputs = map getNativeDrv propagatedNativeBuildInputs__;
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in let
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pos' =
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if pos != null then
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pos
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else if attrs.meta.description or null != null then
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builtins.unsafeGetAttrPos "description" attrs.meta
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else
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builtins.unsafeGetAttrPos "name" attrs;
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pos'' = if pos' != null then "‘" + pos'.file + ":" + toString pos'.line + "’" else "«unknown-file»";
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remediation = {
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unfree = remediate_whitelist "Unfree";
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broken = remediate_whitelist "Broken";
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blacklisted = x: "";
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insecure = remediate_insecure;
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};
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remediate_whitelist = allow_attr: attrs:
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''
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a) For `nixos-rebuild` you can set
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{ nixpkgs.config.allow${allow_attr} = true; }
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in configuration.nix to override this.
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b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
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{ allow${allow_attr} = true; }
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to ~/.config/nixpkgs/config.nix.
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'';
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remediate_insecure = attrs:
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''
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Known issues:
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'' + (lib.fold (issue: default: "${default} - ${issue}\n") "" attrs.meta.knownVulnerabilities) + ''
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You can install it anyway by whitelisting this package, using the
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following methods:
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a) for `nixos-rebuild` you can add ‘${attrs.name or "«name-missing»"}’ to
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`nixpkgs.config.permittedInsecurePackages` in the configuration.nix,
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like so:
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{
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nixpkgs.config.permittedInsecurePackages = [
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"${attrs.name or "«name-missing»"}"
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];
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}
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b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
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‘${attrs.name or "«name-missing»"}’ to `permittedInsecurePackages` in
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~/.config/nixpkgs/config.nix, like so:
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{
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permittedInsecurePackages = [
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"${attrs.name or "«name-missing»"}"
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];
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}
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'';
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throwEvalHelp = { reason , errormsg ? "" }:
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throw (''
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Package ‘${attrs.name or "«name-missing»"}’ in ${pos''} ${errormsg}, refusing to evaluate.
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'' + ((builtins.getAttr reason remediation) attrs));
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# Check if a derivation is valid, that is whether it passes checks for
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# e.g brokenness or license.
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#
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# Return { valid: Bool } and additionally
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# { reason: String; errormsg: String } if it is not valid, where
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# reason is one of "unfree", "blacklisted" or "broken".
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checkValidity = attrs:
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if hasDeniedUnfreeLicense attrs && !(hasWhitelistedLicense attrs) then
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{ valid = false; reason = "unfree"; errormsg = "has an unfree license (‘${showLicense attrs.meta.license}’)"; }
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else if hasBlacklistedLicense attrs then
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{ valid = false; reason = "blacklisted"; errormsg = "has a blacklisted license (‘${showLicense attrs.meta.license}’)"; }
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else if !allowBroken && attrs.meta.broken or false then
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{ valid = false; reason = "broken"; errormsg = "is marked as broken"; }
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else if !allowBroken && attrs.meta.platforms or null != null && !lib.lists.elem result.system attrs.meta.platforms then
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{ valid = false; reason = "broken"; errormsg = "is not supported on ‘${result.system}’"; }
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else if !(hasAllowedInsecure attrs) then
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{ valid = false; reason = "insecure"; errormsg = "is marked as insecure"; }
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else { valid = true; };
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outputs' =
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outputs ++
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(if separateDebugInfo then assert result.isLinux; [ "debug" ] else []);
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buildInputs' = lib.chooseDevOutputs buildInputs ++
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(if separateDebugInfo then [ ../../build-support/setup-hooks/separate-debug-info.sh ] else []);
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nativeBuildInputs' = lib.chooseDevOutputs nativeBuildInputs;
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propagatedBuildInputs' = lib.chooseDevOutputs propagatedBuildInputs;
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propagatedNativeBuildInputs' = lib.chooseDevOutputs propagatedNativeBuildInputs;
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in
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# Throw an error if trying to evaluate an non-valid derivation
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assert let v = checkValidity attrs;
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in if !v.valid
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then throwEvalHelp (removeAttrs v ["valid"])
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else true;
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lib.addPassthru (derivation (
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(removeAttrs attrs
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["meta" "passthru" "crossAttrs" "pos"
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"__impureHostDeps" "__propagatedImpureHostDeps"
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"sandboxProfile" "propagatedSandboxProfile"])
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// (let
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computedSandboxProfile =
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lib.concatMap (input: input.__propagatedSandboxProfile or []) (extraBuildInputs ++ buildInputs' ++ nativeBuildInputs');
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computedPropagatedSandboxProfile =
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lib.concatMap (input: input.__propagatedSandboxProfile or []) (propagatedBuildInputs' ++ propagatedNativeBuildInputs');
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computedImpureHostDeps =
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lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or []) (extraBuildInputs ++ buildInputs' ++ nativeBuildInputs'));
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computedPropagatedImpureHostDeps =
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lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or []) (propagatedBuildInputs' ++ propagatedNativeBuildInputs'));
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in
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{
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builder = attrs.realBuilder or shell;
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args = attrs.args or ["-e" (attrs.builder or ./default-builder.sh)];
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stdenv = result;
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system = result.system;
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userHook = config.stdenv.userHook or null;
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__ignoreNulls = true;
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# Inputs built by the cross compiler.
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buildInputs = if crossConfig != null then buildInputs' else [];
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propagatedBuildInputs = if crossConfig != null then propagatedBuildInputs' else [];
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# Inputs built by the usual native compiler.
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nativeBuildInputs = nativeBuildInputs'
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++ lib.optionals (crossConfig == null) buildInputs'
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++ lib.optional
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(result.isCygwin
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|| (crossConfig != null && lib.hasSuffix "mingw32" crossConfig))
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../../build-support/setup-hooks/win-dll-link.sh
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;
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propagatedNativeBuildInputs = propagatedNativeBuildInputs' ++
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(if crossConfig == null then propagatedBuildInputs' else []);
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} // ifDarwin {
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# TODO: remove lib.unique once nix has a list canonicalization primitive
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__sandboxProfile =
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let profiles = [ extraSandboxProfile ] ++ computedSandboxProfile ++ computedPropagatedSandboxProfile ++ [ propagatedSandboxProfile sandboxProfile ];
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final = lib.concatStringsSep "\n" (lib.filter (x: x != "") (lib.unique profiles));
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in final;
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__propagatedSandboxProfile = lib.unique (computedPropagatedSandboxProfile ++ [ propagatedSandboxProfile ]);
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__impureHostDeps = computedImpureHostDeps ++ computedPropagatedImpureHostDeps ++ __propagatedImpureHostDeps ++ __impureHostDeps ++ __extraImpureHostDeps ++ [
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"/dev/zero"
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"/dev/random"
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"/dev/urandom"
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"/bin/sh"
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];
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__propagatedImpureHostDeps = computedPropagatedImpureHostDeps ++ __propagatedImpureHostDeps;
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} // (if outputs' != [ "out" ] then {
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outputs = outputs';
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} else { })))) (
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{
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overrideAttrs = f: mkDerivation (attrs // (f attrs));
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# The meta attribute is passed in the resulting attribute set,
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# but it's not part of the actual derivation, i.e., it's not
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# passed to the builder and is not a dependency. But since we
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# include it in the result, it *is* available to nix-env for queries.
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meta = { }
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# If the packager hasn't specified `outputsToInstall`, choose a default,
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# which is the name of `p.bin or p.out or p`;
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# if he has specified it, it will be overridden below in `// meta`.
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# Note: This default probably shouldn't be globally configurable.
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# Services and users should specify outputs explicitly,
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# unless they are comfortable with this default.
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// { outputsToInstall =
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let
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outs = outputs'; # the value passed to derivation primitive
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hasOutput = out: builtins.elem out outs;
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in [( lib.findFirst hasOutput null (["bin" "out"] ++ outs) )];
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}
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// meta
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# Fill `meta.position` to identify the source location of the package.
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// lib.optionalAttrs (pos' != null)
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{ position = pos'.file + ":" + toString pos'.line; }
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;
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inherit passthru;
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} //
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# Pass through extra attributes that are not inputs, but
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# should be made available to Nix expressions using the
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# derivation (e.g., in assertions).
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passthru);
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# The stdenv that we are producing.
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result =
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derivation (
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(if isNull allowedRequisites then {} else { allowedRequisites = allowedRequisites ++ defaultNativeBuildInputs; }) //
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{
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inherit system name;
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builder = shell;
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args = ["-e" ./builder.sh];
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setup = setupScript;
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inherit preHook initialPath shell defaultNativeBuildInputs;
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}
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// ifDarwin {
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__sandboxProfile = stdenvSandboxProfile;
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__impureHostDeps = __stdenvImpureHostDeps;
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})
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// rec {
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meta = {
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description = "The default build environment for Unix packages in Nixpkgs";
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platforms = lib.platforms.all;
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};
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# Utility flags to test the type of platform.
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isDarwin = system == "x86_64-darwin";
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isLinux = system == "i686-linux"
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|| system == "x86_64-linux"
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|| system == "powerpc-linux"
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|| system == "armv5tel-linux"
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|| system == "armv6l-linux"
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|| system == "armv7l-linux"
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|| system == "aarch64-linux"
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|| system == "mips64el-linux";
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isGNU = system == "i686-gnu"; # GNU/Hurd
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isGlibc = isGNU # useful for `stdenvNative'
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|| isLinux
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|| system == "x86_64-kfreebsd-gnu";
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isSunOS = system == "i686-solaris"
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|| system == "x86_64-solaris";
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isCygwin = system == "i686-cygwin"
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|| system == "x86_64-cygwin";
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isFreeBSD = system == "i686-freebsd"
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|| system == "x86_64-freebsd";
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isOpenBSD = system == "i686-openbsd"
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|| system == "x86_64-openbsd";
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isi686 = system == "i686-linux"
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|| system == "i686-gnu"
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|| system == "i686-freebsd"
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|| system == "i686-openbsd"
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|| system == "i686-cygwin"
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|| system == "i386-sunos";
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isx86_64 = system == "x86_64-linux"
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|| system == "x86_64-darwin"
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|| system == "x86_64-freebsd"
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|| system == "x86_64-openbsd"
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|| system == "x86_64-cygwin"
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|| system == "x86_64-solaris";
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is64bit = system == "x86_64-linux"
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|| system == "x86_64-darwin"
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|| system == "x86_64-freebsd"
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|| system == "x86_64-openbsd"
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|| system == "x86_64-cygwin"
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|| system == "x86_64-solaris"
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|| system == "aarch64-linux"
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|| system == "mips64el-linux";
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isMips = system == "mips-linux"
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|| system == "mips64el-linux";
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isArm = system == "armv5tel-linux"
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|| system == "armv6l-linux"
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|| system == "armv7l-linux";
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isAarch64 = system == "aarch64-linux";
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isBigEndian = system == "powerpc-linux";
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|
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# Whether we should run paxctl to pax-mark binaries.
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needsPax = isLinux;
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inherit mkDerivation;
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|
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# For convenience, bring in the library functions in lib/ so
|
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# packages don't have to do that themselves.
|
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inherit lib;
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||
|
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inherit fetchurlBoot;
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||
|
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inherit overrides;
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||
|
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inherit cc;
|
||
}
|
||
|
||
# Propagate any extra attributes. For instance, we use this to
|
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# "lift" packages like curl from the final stdenv for Linux to
|
||
# all-packages.nix for that platform (meaning that it has a line
|
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# like curl = if stdenv ? curl then stdenv.curl else ...).
|
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// extraAttrs;
|
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|
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in result)
|