mirrored from https://chromium.googlesource.com/infra/luci/luci-go
/
install_client.go
51 lines (44 loc) · 1.64 KB
/
install_client.go
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// Copyright 2015 The LUCI Authors.
//
// 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.
//go:build !windows
// +build !windows
package cipd
import (
"context"
"hash"
"os"
"go.chromium.org/luci/common/errors"
"go.chromium.org/luci/cipd/client/cipd/fs"
"go.chromium.org/luci/cipd/common"
"go.chromium.org/luci/cipd/common/cipderr"
)
func (c *clientImpl) installClient(ctx context.Context, fs fs.FileSystem, h hash.Hash, fetchURL, destination, hexDigest string) error {
curStat, err := os.Stat(destination)
if err != nil {
return errors.Annotate(err, "checking old client binary file").Tag(cipderr.IO).Err()
}
return fs.EnsureFile(ctx, destination, func(of *os.File) error {
if err := of.Chmod(curStat.Mode()); err != nil {
return errors.Annotate(err, "changing new client binary mode").Tag(cipderr.IO).Err()
}
// TODO(iannucci): worry about owner/group?
if err := c.storage.download(ctx, fetchURL, of, h); err != nil {
return err
}
if got := common.HexDigest(h); got != hexDigest {
return errors.Reason("client binary file hash mismatch: expecting %q, got %q", hexDigest, got).Tag(cipderr.HashMismatch).Err()
}
return nil
})
}