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// Copyright 2018 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package paths
import "runtime"
type PathConfig struct {
// Whether to create the symlink in the new PATH for this tool.
Symlink bool
// Whether to log about usages of this tool to the soong.log
Log bool
// Whether to exit with an error instead of invoking the underlying tool.
Error bool
// Whether we use a linux-specific prebuilt for this tool. On Darwin,
// we'll allow the host executable instead.
LinuxOnlyPrebuilt bool
}
// These binaries can be run from $PATH, nonhermetically. There should be as
// few as possible of these, since this means that the build depends on tools
// that are not shipped in the source tree and whose behavior is therefore
// unpredictable.
var Allowed = PathConfig{
Symlink: true,
Log: false,
Error: false,
}
// This tool is specifically disallowed and calling it will result in an
// "executable no found" error.
var Forbidden = PathConfig{
Symlink: false,
Log: true,
Error: true,
}
// This tool is allowed, but access to it will be logged.
var Log = PathConfig{
Symlink: true,
Log: true,
Error: false,
}
// The configuration used if the tool is not listed in the config below.
// Currently this will create the symlink, but log and error when it's used. In
// the future, I expect the symlink to be removed, and this will be equivalent
// to Forbidden. This applies to every tool not specifically mentioned in the
// configuration.
var Missing = PathConfig{
Symlink: true,
Log: true,
Error: true,
}
// This is used for binaries for which we have prebuilt versions, but only for
// Linux. Thus, their execution from $PATH is only allowed on Mac OS.
var LinuxOnlyPrebuilt = PathConfig{
Symlink: false,
Log: true,
Error: true,
LinuxOnlyPrebuilt: true,
}
func GetConfig(name string) PathConfig {
if config, ok := Configuration[name]; ok {
return config
}
return Missing
}
// This list specifies whether a particular binary from $PATH is allowed to be
// run during the build. For more documentation, see path_interposer.go .
var Configuration = map[string]PathConfig{
"bash": Allowed,
"diff": Allowed,
"dlv": Allowed,
"expr": Allowed,
"fuser": Allowed,
"gcert": Allowed,
"gcertstatus": Allowed,
"gcloud": Allowed,
"getopt": Allowed,
"git": Allowed,
"hexdump": Allowed,
"jar": Allowed,
"java": Allowed,
"javap": Allowed,
"lsof": Allowed,
"openssl": Allowed,
"pstree": Allowed,
"rsync": Allowed,
"sh": Allowed,
"stubby": Allowed,
"tr": Allowed,
"unzip": Allowed,
"zip": Allowed,
// AICP specific tools
"shuf": Allowed,
"mogrify": Allowed,
"xmllint": Allowed,
"repo": Allowed,
// Host toolchain is removed. In-tree toolchain should be used instead.
// GCC also can't find cc1 with this implementation.
"ar": Forbidden,
"as": Forbidden,
"cc": Forbidden,
"clang": Forbidden,
"clang++": Forbidden,
"gcc": Forbidden,
"g++": Forbidden,
"ld": Forbidden,
"ld.bfd": Forbidden,
"ld.gold": Forbidden,
"pkg-config": Forbidden,
// These are toybox tools that only work on Linux.
"pgrep": LinuxOnlyPrebuilt,
"pkill": LinuxOnlyPrebuilt,
"ps": LinuxOnlyPrebuilt,
}
func init() {
if runtime.GOOS == "darwin" {
Configuration["sw_vers"] = Allowed
Configuration["xcrun"] = Allowed
// We don't have darwin prebuilts for some tools,
// so allow the host versions.
for name, config := range Configuration {
if config.LinuxOnlyPrebuilt {
Configuration[name] = Allowed
}
}
}
}
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