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platform_build_soong
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Propagate errors out of validatePath 

The next patch will need to more complicated custom error handling,
so make validatePath return an error and let the caller handle it.

Test: paths_test.go
Change-Id: I4fe11c3f319303d779596709f4819e828b5bdb9b
This commit is contained in:
Colin Cross 2018-02-22 13:54:26 -08:00
parent dc75ae70f3
commit 1ccfcc36bd
2 changed files with 100 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

137
android/paths.go
View File

@ -70,7 +70,14 @@ var _ moduleErrorf = blueprint.ModuleContext(nil)
// reportPathError will register an error with the attached context. It
// attempts ctx.ModuleErrorf for a better error message first, then falls
// back to ctx.Errorf.
func reportPathError(ctx PathContext, format string, args ...interface{}) {
func reportPathError(ctx PathContext, err error) {
reportPathErrorf(ctx, "%s", err.Error())
}
// reportPathErrorf will register an error with the attached context. It
// attempts ctx.ModuleErrorf for a better error message first, then falls
// back to ctx.Errorf.
func reportPathErrorf(ctx PathContext, format string, args ...interface{}) {
if mctx, ok := ctx.(moduleErrorf); ok {
mctx.ModuleErrorf(format, args...)
} else if ectx, ok := ctx.(errorfContext); ok {
@ -121,7 +128,7 @@ func GenPathWithExt(ctx ModuleContext, subdir string, p Path, ext string) Module
if path, ok := p.(genPathProvider); ok {
return path.genPathWithExt(ctx, subdir, ext)
}
reportPathError(ctx, "Tried to create generated file from unsupported path: %s(%s)", reflect.TypeOf(p).Name(), p)
reportPathErrorf(ctx, "Tried to create generated file from unsupported path: %s(%s)", reflect.TypeOf(p).Name(), p)
return PathForModuleGen(ctx)
}
@ -131,7 +138,7 @@ func ObjPathWithExt(ctx ModuleContext, subdir string, p Path, ext string) Module
if path, ok := p.(objPathProvider); ok {
return path.objPathWithExt(ctx, subdir, ext)
}
reportPathError(ctx, "Tried to create object file from unsupported path: %s (%s)", reflect.TypeOf(p).Name(), p)
reportPathErrorf(ctx, "Tried to create object file from unsupported path: %s (%s)", reflect.TypeOf(p).Name(), p)
return PathForModuleObj(ctx)
}
@ -142,7 +149,7 @@ func ResPathWithName(ctx ModuleContext, p Path, name string) ModuleResPath {
if path, ok := p.(resPathProvider); ok {
return path.resPathWithName(ctx, name)
}
reportPathError(ctx, "Tried to create res file from unsupported path: %s (%s)", reflect.TypeOf(p).Name(), p)
reportPathErrorf(ctx, "Tried to create res file from unsupported path: %s (%s)", reflect.TypeOf(p).Name(), p)
return PathForModuleRes(ctx)
}
@ -245,7 +252,7 @@ func pathsForModuleSrcFromFullPath(ctx ModuleContext, paths []string) Paths {
for _, p := range paths {
path := filepath.Clean(p)
if !strings.HasPrefix(path, prefix) {
reportPathError(ctx, "Path '%s' is not in module source directory '%s'", p, prefix)
reportPathErrorf(ctx, "Path '%s' is not in module source directory '%s'", p, prefix)
continue
}
ret = append(ret, PathForModuleSrc(ctx, path[len(prefix):]))
@ -476,21 +483,24 @@ func (p SourcePath) withRel(rel string) SourcePath {
// safePathForSource is for paths that we expect are safe -- only for use by go
// code that is embedding ninja variables in paths
func safePathForSource(ctx PathContext, path string) SourcePath {
p := validateSafePath(ctx, path)
p, err := validateSafePath(path)
if err != nil {
reportPathError(ctx, err)
}
ret := SourcePath{basePath{p, ctx.Config(), ""}}
abs, err := filepath.Abs(ret.String())
if err != nil {
reportPathError(ctx, "%s", err.Error())
reportPathError(ctx, err)
return ret
}
buildroot, err := filepath.Abs(ctx.Config().buildDir)
if err != nil {
reportPathError(ctx, "%s", err.Error())
reportPathError(ctx, err)
return ret
}
if strings.HasPrefix(abs, buildroot) {
reportPathError(ctx, "source path %s is in output", abs)
reportPathErrorf(ctx, "source path %s is in output", abs)
return ret
}
@ -501,28 +511,32 @@ func safePathForSource(ctx PathContext, path string) SourcePath {
// neither escapes the source dir nor is in the out dir.
// On error, it will return a usable, but invalid SourcePath, and report a ModuleError.
func PathForSource(ctx PathContext, pathComponents ...string) SourcePath {
p := validatePath(ctx, pathComponents...)
p, err := validatePath(pathComponents...)
ret := SourcePath{basePath{p, ctx.Config(), ""}}
if err != nil {
reportPathError(ctx, err)
return ret
}
abs, err := filepath.Abs(ret.String())
if err != nil {
reportPathError(ctx, "%s", err.Error())
reportPathError(ctx, err)
return ret
}
buildroot, err := filepath.Abs(ctx.Config().buildDir)
if err != nil {
reportPathError(ctx, "%s", err.Error())
reportPathError(ctx, err)
return ret
}
if strings.HasPrefix(abs, buildroot) {
reportPathError(ctx, "source path %s is in output", abs)
reportPathErrorf(ctx, "source path %s is in output", abs)
return ret
}
if exists, _, err := ctx.Fs().Exists(ret.String()); err != nil {
reportPathError(ctx, "%s: %s", ret, err.Error())
reportPathErrorf(ctx, "%s: %s", ret, err.Error())
} else if !exists {
reportPathError(ctx, "source path %s does not exist", ret)
reportPathErrorf(ctx, "source path %s does not exist", ret)
}
return ret
}
@ -531,26 +545,30 @@ func PathForSource(ctx PathContext, pathComponents ...string) SourcePath {
// path exists, or an empty OptionalPath if it doesn't exist. Dependencies are added
// so that the ninja file will be regenerated if the state of the path changes.
func ExistentPathForSource(ctx PathContext, pathComponents ...string) OptionalPath {
p := validatePath(ctx, pathComponents...)
p, err := validatePath(pathComponents...)
if err != nil {
reportPathError(ctx, err)
return OptionalPath{}
}
path := SourcePath{basePath{p, ctx.Config(), ""}}
abs, err := filepath.Abs(path.String())
if err != nil {
reportPathError(ctx, "%s", err.Error())
reportPathError(ctx, err)
return OptionalPath{}
}
buildroot, err := filepath.Abs(ctx.Config().buildDir)
if err != nil {
reportPathError(ctx, "%s", err.Error())
reportPathError(ctx, err)
return OptionalPath{}
}
if strings.HasPrefix(abs, buildroot) {
reportPathError(ctx, "source path %s is in output", abs)
reportPathErrorf(ctx, "source path %s is in output", abs)
return OptionalPath{}
}
if pathtools.IsGlob(path.String()) {
reportPathError(ctx, "path may not contain a glob: %s", path.String())
reportPathErrorf(ctx, "path may not contain a glob: %s", path.String())
return OptionalPath{}
}
@ -559,7 +577,7 @@ func ExistentPathForSource(ctx PathContext, pathComponents ...string) OptionalPa
// a single file.
files, err := gctx.GlobWithDeps(path.String(), nil)
if err != nil {
reportPathError(ctx, "glob: %s", err.Error())
reportPathErrorf(ctx, "glob: %s", err.Error())
return OptionalPath{}
}
@ -571,7 +589,7 @@ func ExistentPathForSource(ctx PathContext, pathComponents ...string) OptionalPa
// AddNinjaFileDeps
files, dirs, err := pathtools.Glob(path.String(), nil)
if err != nil {
reportPathError(ctx, "glob: %s", err.Error())
reportPathErrorf(ctx, "glob: %s", err.Error())
return OptionalPath{}
}
@ -593,7 +611,10 @@ func (p SourcePath) String() string {
// Join creates a new SourcePath with paths... joined with the current path. The
// provided paths... may not use '..' to escape from the current path.
func (p SourcePath) Join(ctx PathContext, paths ...string) SourcePath {
path := validatePath(ctx, paths...)
path, err := validatePath(paths...)
if err != nil {
reportPathError(ctx, err)
}
return p.withRel(path)
}
@ -606,17 +627,17 @@ func (p SourcePath) OverlayPath(ctx ModuleContext, path Path) OptionalPath {
} else if srcPath, ok := path.(SourcePath); ok {
relDir = srcPath.path
} else {
reportPathError(ctx, "Cannot find relative path for %s(%s)", reflect.TypeOf(path).Name(), path)
reportPathErrorf(ctx, "Cannot find relative path for %s(%s)", reflect.TypeOf(path).Name(), path)
return OptionalPath{}
}
dir := filepath.Join(p.config.srcDir, p.path, relDir)
// Use Glob so that we are run again if the directory is added.
if pathtools.IsGlob(dir) {
reportPathError(ctx, "Path may not contain a glob: %s", dir)
reportPathErrorf(ctx, "Path may not contain a glob: %s", dir)
}
paths, err := ctx.GlobWithDeps(dir, []string{})
if err != nil {
reportPathError(ctx, "glob: %s", err.Error())
reportPathErrorf(ctx, "glob: %s", err.Error())
return OptionalPath{}
}
if len(paths) == 0 {
@ -624,7 +645,7 @@ func (p SourcePath) OverlayPath(ctx ModuleContext, path Path) OptionalPath {
}
relPath, err := filepath.Rel(p.config.srcDir, paths[0])
if err != nil {
reportPathError(ctx, "%s", err.Error())
reportPathError(ctx, err)
return OptionalPath{}
}
return OptionalPathForPath(PathForSource(ctx, relPath))
@ -646,7 +667,10 @@ var _ Path = OutputPath{}
// validated to not escape the build dir.
// On error, it will return a usable, but invalid OutputPath, and report a ModuleError.
func PathForOutput(ctx PathContext, pathComponents ...string) OutputPath {
path := validatePath(ctx, pathComponents...)
path, err := validatePath(pathComponents...)
if err != nil {
reportPathError(ctx, err)
}
return OutputPath{basePath{path, ctx.Config(), ""}}
}
@ -663,14 +687,20 @@ func (p OutputPath) RelPathString() string {
// Join creates a new OutputPath with paths... joined with the current path. The
// provided paths... may not use '..' to escape from the current path.
func (p OutputPath) Join(ctx PathContext, paths ...string) OutputPath {
path := validatePath(ctx, paths...)
path, err := validatePath(paths...)
if err != nil {
reportPathError(ctx, err)
}
return p.withRel(path)
}
// PathForIntermediates returns an OutputPath representing the top-level
// intermediates directory.
func PathForIntermediates(ctx PathContext, paths ...string) OutputPath {
path := validatePath(ctx, paths...)
path, err := validatePath(paths...)
if err != nil {
reportPathError(ctx, err)
}
return PathForOutput(ctx, ".intermediates", path)
}
@ -687,7 +717,10 @@ var _ resPathProvider = ModuleSrcPath{}
// PathForModuleSrc returns a ModuleSrcPath representing the paths... under the
// module's local source directory.
func PathForModuleSrc(ctx ModuleContext, paths ...string) ModuleSrcPath {
p := validatePath(ctx, paths...)
p, err := validatePath(paths...)
if err != nil {
reportPathError(ctx, err)
}
path := ModuleSrcPath{PathForSource(ctx, ctx.ModuleDir(), p)}
path.basePath.rel = p
return path
@ -765,7 +798,10 @@ func PathForVndkRefAbiDump(ctx ModuleContext, version, fileName string, vndkOrNd
// PathForModuleOut returns a Path representing the paths... under the module's
// output directory.
func PathForModuleOut(ctx ModuleContext, paths ...string) ModuleOutPath {
p := validatePath(ctx, paths...)
p, err := validatePath(paths...)
if err != nil {
reportPathError(ctx, err)
}
return ModuleOutPath{
OutputPath: pathForModule(ctx).withRel(p),
}
@ -784,7 +820,10 @@ var _ objPathProvider = ModuleGenPath{}
// PathForModuleGen returns a Path representing the paths... under the module's
// `gen' directory.
func PathForModuleGen(ctx ModuleContext, paths ...string) ModuleGenPath {
p := validatePath(ctx, paths...)
p, err := validatePath(paths...)
if err != nil {
reportPathError(ctx, err)
}
return ModuleGenPath{
ModuleOutPath: ModuleOutPath{
OutputPath: pathForModule(ctx).withRel("gen").withRel(p),
@ -812,7 +851,10 @@ var _ Path = ModuleObjPath{}
// PathForModuleObj returns a Path representing the paths... under the module's
// 'obj' directory.
func PathForModuleObj(ctx ModuleContext, pathComponents ...string) ModuleObjPath {
p := validatePath(ctx, pathComponents...)
p, err := validatePath(pathComponents...)
if err != nil {
reportPathError(ctx, err)
}
return ModuleObjPath{PathForModuleOut(ctx, "obj", p)}
}
@ -827,7 +869,11 @@ var _ Path = ModuleResPath{}
// PathForModuleRes returns a Path representing the paths... under the module's
// 'res' directory.
func PathForModuleRes(ctx ModuleContext, pathComponents ...string) ModuleResPath {
p := validatePath(ctx, pathComponents...)
p, err := validatePath(pathComponents...)
if err != nil {
reportPathError(ctx, err)
}
return ModuleResPath{PathForModuleOut(ctx, "res", p)}
}
@ -873,36 +919,34 @@ func PathForModuleInstall(ctx ModuleInstallPathContext, pathComponents ...string
// validateSafePath validates a path that we trust (may contain ninja variables).
// Ensures that each path component does not attempt to leave its component.
func validateSafePath(ctx PathContext, pathComponents ...string) string {
func validateSafePath(pathComponents ...string) (string, error) {
for _, path := range pathComponents {
path := filepath.Clean(path)
if path == ".." || strings.HasPrefix(path, "../") || strings.HasPrefix(path, "/") {
reportPathError(ctx, "Path is outside directory: %s", path)
return ""
return "", fmt.Errorf("Path is outside directory: %s", path)
}
}
// TODO: filepath.Join isn't necessarily correct with embedded ninja
// variables. '..' may remove the entire ninja variable, even if it
// will be expanded to multiple nested directories.
return filepath.Join(pathComponents...)
return filepath.Join(pathComponents...), nil
}
// validatePath validates that a path does not include ninja variables, and that
// each path component does not attempt to leave its component. Returns a joined
// version of each path component.
func validatePath(ctx PathContext, pathComponents ...string) string {
func validatePath(pathComponents ...string) (string, error) {
for _, path := range pathComponents {
if strings.Contains(path, "$") {
reportPathError(ctx, "Path contains invalid character($): %s", path)
return ""
return "", fmt.Errorf("Path contains invalid character($): %s", path)
}
}
return validateSafePath(ctx, pathComponents...)
return validateSafePath(pathComponents...)
}
func PathForPhony(ctx PathContext, phony string) WritablePath {
if strings.ContainsAny(phony, "$/") {
reportPathError(ctx, "Phony target contains invalid character ($ or /): %s", phony)
reportPathErrorf(ctx, "Phony target contains invalid character ($ or /): %s", phony)
}
return PhonyPath{basePath{phony, ctx.Config(), ""}}
}
@ -925,7 +969,10 @@ func (p testPath) String() string {
}
func PathForTesting(paths ...string) Path {
p := validateSafePath(nil, paths...)
p, err := validateSafePath(paths...)
if err != nil {
panic(err)
}
return testPath{basePath{path: p, rel: p}}
}

10
android/paths_test.go
View File

@ -112,7 +112,10 @@ func TestValidateSafePath(t *testing.T) {
for _, testCase := range validateSafePathTestCases {
t.Run(strings.Join(testCase.in, ","), func(t *testing.T) {
ctx := &configErrorWrapper{}
out := validateSafePath(ctx, testCase.in...)
out, err := validateSafePath(testCase.in...)
if err != nil {
reportPathError(ctx, err)
}
check(t, "validateSafePath", p(testCase.in), out, ctx.errors, testCase.out, testCase.err)
})
}
@ -122,7 +125,10 @@ func TestValidatePath(t *testing.T) {
for _, testCase := range validatePathTestCases {
t.Run(strings.Join(testCase.in, ","), func(t *testing.T) {
ctx := &configErrorWrapper{}
out := validatePath(ctx, testCase.in...)
out, err := validatePath(testCase.in...)
if err != nil {
reportPathError(ctx, err)
}
check(t, "validatePath", p(testCase.in), out, ctx.errors, testCase.out, testCase.err)
})
}