0046802ab6
We can use cacert to validate that the data passes SSL certificates. Normally, this doesn’t happen because we already have the hash, but in the hash = "" case we don’t.
161 lines
4.8 KiB
Nix
161 lines
4.8 KiB
Nix
{ lib, buildPackages ? { inherit stdenvNoCC; }, stdenvNoCC
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, curl # Note that `curl' may be `null', in case of the native stdenvNoCC.
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, cacert ? null }:
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let
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mirrors = import ./mirrors.nix;
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# Write the list of mirrors to a file that we can reuse between
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# fetchurl instantiations, instead of passing the mirrors to
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# fetchurl instantiations via environment variables. This makes the
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# resulting store derivations (.drv files) much smaller, which in
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# turn makes nix-env/nix-instantiate faster.
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mirrorsFile =
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buildPackages.stdenvNoCC.mkDerivation ({
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name = "mirrors-list";
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builder = ./write-mirror-list.sh;
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preferLocalBuild = true;
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} // mirrors);
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# Names of the master sites that are mirrored (i.e., "sourceforge",
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# "gnu", etc.).
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sites = builtins.attrNames mirrors;
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impureEnvVars = lib.fetchers.proxyImpureEnvVars ++ [
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# This variable allows the user to pass additional options to curl
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"NIX_CURL_FLAGS"
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# This variable allows the user to override hashedMirrors from the
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# command-line.
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"NIX_HASHED_MIRRORS"
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# This variable allows overriding the timeout for connecting to
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# the hashed mirrors.
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"NIX_CONNECT_TIMEOUT"
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] ++ (map (site: "NIX_MIRRORS_${site}") sites);
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in
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{ # URL to fetch.
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url ? ""
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, # Alternatively, a list of URLs specifying alternative download
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# locations. They are tried in order.
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urls ? []
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, # Additional curl options needed for the download to succeed.
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curlOpts ? ""
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, # Name of the file. If empty, use the basename of `url' (or of the
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# first element of `urls').
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name ? ""
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, # SRI hash.
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hash ? ""
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, # Legacy ways of specifying the hash.
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outputHash ? ""
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, outputHashAlgo ? ""
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, md5 ? ""
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, sha1 ? ""
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, sha256 ? ""
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, sha512 ? ""
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, recursiveHash ? false
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, # Shell code to build a netrc file for BASIC auth
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netrcPhase ? null
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, # Impure env vars (https://nixos.org/nix/manual/#sec-advanced-attributes)
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# needed for netrcPhase
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netrcImpureEnvVars ? []
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, # Shell code executed after the file has been fetched
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# successfully. This can do things like check or transform the file.
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postFetch ? ""
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, # Whether to download to a temporary path rather than $out. Useful
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# in conjunction with postFetch. The location of the temporary file
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# is communicated to postFetch via $downloadedFile.
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downloadToTemp ? false
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, # If true, set executable bit on downloaded file
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executable ? false
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, # If set, don't download the file, but write a list of all possible
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# URLs (resulting from resolving mirror:// URLs) to $out.
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showURLs ? false
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, # Meta information, if any.
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meta ? {}
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# Passthru information, if any.
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, passthru ? {}
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# Doing the download on a remote machine just duplicates network
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# traffic, so don't do that by default
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, preferLocalBuild ? true
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}:
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assert sha512 != "" -> builtins.compareVersions "1.11" builtins.nixVersion <= 0;
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let
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urls_ =
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if urls != [] && url == "" then
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(if lib.isList urls then urls
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else throw "`urls` is not a list")
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else if urls == [] && url != "" then [url]
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else throw "fetchurl requires either `url` or `urls` to be set";
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hash_ =
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if hash != "" then { outputHashAlgo = null; outputHash = hash; }
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else if md5 != "" then throw "fetchurl does not support md5 anymore, please use sha256 or sha512"
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else if (outputHash != "" && outputHashAlgo != "") then { inherit outputHashAlgo outputHash; }
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else if sha512 != "" then { outputHashAlgo = "sha512"; outputHash = sha512; }
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else if sha256 != "" then { outputHashAlgo = "sha256"; outputHash = sha256; }
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else if sha1 != "" then { outputHashAlgo = "sha1"; outputHash = sha1; }
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else if cacert != null then { outputHashAlgo = "sha256"; outputHash = ""; }
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else throw "fetchurl requires a hash for fixed-output derivation: ${lib.concatStringsSep ", " urls_}";
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in
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stdenvNoCC.mkDerivation {
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name =
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if showURLs then "urls"
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else if name != "" then name
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else baseNameOf (toString (builtins.head urls_));
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builder = ./builder.sh;
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nativeBuildInputs = [ curl ];
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urls = urls_;
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# If set, prefer the content-addressable mirrors
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# (http://tarballs.nixos.org) over the original URLs.
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preferHashedMirrors = true;
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# New-style output content requirements.
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inherit (hash_) outputHashAlgo outputHash;
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SSL_CERT_FILE = if hash_.outputHash == ""
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then "${cacert}/etc/ssl/certs/ca-bundle.crt"
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else "/no-cert-file.crt";
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outputHashMode = if (recursiveHash || executable) then "recursive" else "flat";
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inherit curlOpts showURLs mirrorsFile postFetch downloadToTemp executable;
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impureEnvVars = impureEnvVars ++ netrcImpureEnvVars;
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nixpkgsVersion = lib.trivial.release;
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inherit preferLocalBuild;
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postHook = if netrcPhase == null then null else ''
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${netrcPhase}
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curlOpts="$curlOpts --netrc-file $PWD/netrc"
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'';
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inherit meta;
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inherit passthru;
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}
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