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Added unpackaging of plugin to load.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,236 @@ | ||
| /* | ||
| http://www.apache.org/licenses/LICENSE-2.0.txt | ||
| Copyright 2015 Intel Corporation | ||
| 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 unpackage | ||
|
|
||
| import ( | ||
| "archive/tar" | ||
| "bufio" | ||
| "compress/gzip" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| log "github.com/Sirupsen/logrus" | ||
| ) | ||
|
|
||
| var ( | ||
| ErrOpen = errors.New("Error opening file") | ||
| ErrRead = errors.New("Error reading file") | ||
| ErrSeek = errors.New("Error seeking file") | ||
| ErrCreatingFile = errors.New("Error creating file") | ||
| ErrCopyingFile = errors.New("Error copying file") | ||
| ErrUnzip = errors.New("Error unzipping file") | ||
| ErrReadManifest = errors.New("Error reading manifest") | ||
| ErrMkdirAll = errors.New("Error making directory") | ||
| ErrChmod = errors.New("Error changing file permissions") | ||
| ErrFileRead = errors.New("Error reading file") | ||
| ErrNoExecFiles = errors.New("Error no executable files found") | ||
| ErrNext = errors.New("Error iterating through tar file") | ||
| ErrGetContentType = errors.New("Error getting content type") | ||
| ErrUnmarshalJSON = errors.New("Error unmarshaling JSON") | ||
| ErrUntar = errors.New("Error untarring file") | ||
| ) | ||
|
|
||
| var upkgLogger *log.Entry = log.WithFields(log.Fields{ | ||
| "_module": "unpackage", | ||
| }) | ||
|
|
||
| //If package is an ACI, Untar package and Unmarshal ACI manifest | ||
| func Unpackager(path string) (string, *Manifest, error) { | ||
| upkgLogger = upkgLogger.WithField("_block", "Unpackager") | ||
|
|
||
| //Check if file has the extension .aci | ||
| if !strings.Contains(path, ".aci") { | ||
| return path, nil, nil | ||
| } | ||
|
|
||
| f, err := os.Open(path) | ||
| if err != nil { | ||
| return "", nil, fmt.Errorf("%v: %v\n%v", ErrOpen, path, err) | ||
| } | ||
| defer f.Close() | ||
|
|
||
| //Untar loaded package | ||
| data, err := Uncompress(path, f) | ||
| if err != nil { | ||
| return "", nil, err | ||
| } | ||
| //Read JSON manifest | ||
| manifest, err := UnmarshalJSON(data) | ||
| if err != nil { | ||
| return "", nil, err | ||
| } | ||
|
|
||
| dir := strings.Replace(path, ".aci", "", -1) + "/rootfs" | ||
|
|
||
| //Get executable file name and update path | ||
| if len(manifest.App.Exec) < 1 { | ||
| return "", nil, ErrNoExecFiles | ||
| } | ||
| exec := manifest.App.Exec[0] | ||
| path = dir + exec | ||
|
|
||
| return path, manifest, nil | ||
| } | ||
|
|
||
| func Uncompress(path string, f *os.File) ([]byte, error) { | ||
| upkgLogger = upkgLogger.WithField("_block", "Uncompress") | ||
| upkgLogger.Info("Uncompressing Files") | ||
|
|
||
| fileType, err := GetContentType(path, f) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if fileType == "application/x-gzip" { | ||
| reader, err := Unzip(path, f) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return Untar(path, reader) | ||
| } | ||
| return Untar(path, bufio.NewReader(f)) | ||
| } | ||
|
|
||
| //Untar files and get manifest | ||
| func Untar(path string, reader *bufio.Reader) ([]byte, error) { | ||
| upkgLogger = upkgLogger.WithField("_block", "Untar") | ||
| upkgLogger.Info("Untarring Files") | ||
|
|
||
| fileMode := os.FileMode(0755) | ||
| mdata := []byte{} //manifest data | ||
| tr := tar.NewReader(reader) | ||
| dir := filepath.Join(strings.Replace(path, ".aci", "", -1), "/") | ||
| err := os.MkdirAll(dir, fileMode) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v: %v\n%v", ErrMkdirAll, dir, err) | ||
| } | ||
| upkgLogger.Info("Creating directory and writing files to: ", dir) | ||
|
|
||
| for { | ||
| hdr, err := tr.Next() | ||
| if err == io.EOF { | ||
| break | ||
| } | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v\n%v", ErrNext, err) | ||
| } | ||
| file := filepath.Join(dir, hdr.Name) | ||
|
|
||
| //Check if header type is a file or directory | ||
| switch hdr.Typeflag { | ||
| case tar.TypeReg: | ||
| //Create files | ||
| fmt.Println("x", hdr.Name) | ||
| w, err := os.Create(file) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v: %v\n%v", ErrCreatingFile, file, err) | ||
| } | ||
| _, err = io.Copy(w, tr) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v: %v\n%v", ErrCopyingFile, file, err) | ||
| } | ||
| err = os.Chmod(file, fileMode) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v: %v\n%v", ErrChmod, file, err) | ||
| } | ||
| //Get manifest data for unmarshaling | ||
| if hdr.Name == "manifest" { | ||
| mdata, err = ioutil.ReadFile(file) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v: %v\n%v", ErrReadManifest, file, err) | ||
| } | ||
| } | ||
| w.Close() | ||
| case tar.TypeDir: | ||
| //Create directory | ||
| fmt.Println("x", hdr.Name) | ||
| err = os.MkdirAll(file, fileMode) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v: %v\n%v", ErrMkdirAll, file, err) | ||
| } | ||
| default: | ||
| return nil, fmt.Errorf("%v: %v", ErrUntar, hdr.Name) | ||
| } | ||
| } | ||
| return mdata, nil | ||
| } | ||
|
|
||
| //Get the content type of the file | ||
| func GetContentType(path string, file *os.File) (string, error) { | ||
| upkgLogger = upkgLogger.WithField("_block", "GetContentType") | ||
|
|
||
| b := make([]byte, 512) | ||
| _, err := file.Read(b) | ||
| if err != nil { | ||
| return "", fmt.Errorf("%v: %v\n%v", ErrRead, path, err) | ||
| } | ||
| fileType := http.DetectContentType(b) | ||
| _, err = file.Seek(0, 0) | ||
| if err != nil { | ||
| return "", fmt.Errorf("%v: %v\n%v", ErrSeek, path, err) | ||
| } | ||
| return fileType, nil | ||
| } | ||
|
|
||
| func Unzip(path string, f *os.File) (*bufio.Reader, error) { | ||
| upkgLogger = upkgLogger.WithField("_block", "Unzip") | ||
| reader, err := gzip.NewReader(bufio.NewReader(f)) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v: %v\n%v", ErrUnzip, path, err) | ||
| } | ||
| return bufio.NewReader(reader), nil | ||
| } | ||
|
|
||
| type Labels struct { | ||
| Name string `json:"name"` | ||
| Value string `json:"value"` | ||
| } | ||
|
|
||
| type App struct { | ||
| Exec []string `json:"exec"` | ||
| Group int64 `json:"group,string"` | ||
| User int64 `json:"user,string"` | ||
| } | ||
|
|
||
| type Manifest struct { | ||
| AcKind string `json:"acKind"` | ||
| AcVersion string `json:"acVersion"` | ||
| Name string `json:"name"` | ||
| Labels []Labels `json:"labels"` | ||
| App App `json:"app"` | ||
| } | ||
|
|
||
| //Unmarshal ACI manifest | ||
| func UnmarshalJSON(data []byte) (*Manifest, error) { | ||
| upkgLogger = upkgLogger.WithField("_block", "UnmarshalJSON") | ||
| upkgLogger.Info("Unmarshaling JSON") | ||
|
|
||
| manifest := &Manifest{} | ||
| err := json.Unmarshal(data, manifest) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%v\n%v", ErrUnmarshalJSON, err) | ||
| } | ||
| return manifest, nil | ||
| } |
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