// Prepare creates temporary directory, copies file there and verifies checksums
func (c *Changes) Prepare() error {
var err error
for _, file := range c.Files {
if filepath.Dir(file.Filename) != "." {
return fmt.Errorf("file is not in the same folder as .changes file: %s", file.Filename)
}
file.Filename = filepath.Base(file.Filename)
err = utils.CopyFile(filepath.Join(c.BasePath, file.Filename), filepath.Join(c.TempDir, file.Filename))
if err != nil {
return err
}
}
for _, file := range c.Files {
var info utils.ChecksumInfo
info, err = utils.ChecksumsForFile(filepath.Join(c.TempDir, file.Filename))
if err != nil {
return err
}
if info.Size != file.Checksums.Size {
return fmt.Errorf("size mismatch: expected %v != obtained %v", file.Checksums.Size, info.Size)
}
if info.MD5 != file.Checksums.MD5 {
return fmt.Errorf("checksum mismatch MD5: expected %v != obtained %v", file.Checksums.MD5, info.MD5)
}
if info.SHA1 != file.Checksums.SHA1 {
return fmt.Errorf("checksum mismatch SHA1: expected %v != obtained %v", file.Checksums.SHA1, info.SHA1)
}
if info.SHA256 != file.Checksums.SHA256 {
return fmt.Errorf("checksum mismatch SHA256 expected %v != obtained %v", file.Checksums.SHA256, info.SHA256)
}
}
return nil
}
// NewChanges moves .changes file into temporary directory and creates Changes structure
func NewChanges(path string) (*Changes, error) {
var err error
c := &Changes{
BasePath: filepath.Dir(path),
ChangesName: filepath.Base(path),
}
c.TempDir, err = ioutil.TempDir(os.TempDir(), "aptly")
if err != nil {
return nil, err
}
// copy .changes file into temporary directory
err = utils.CopyFile(filepath.Join(c.BasePath, c.ChangesName), filepath.Join(c.TempDir, c.ChangesName))
if err != nil {
return nil, err
}
return c, nil
}
func aptlyGraph(cmd *commander.Command, args []string) error {
var err error
if len(args) != 0 {
cmd.Usage()
return commander.ErrCommandError
}
fmt.Printf("Generating graph...\n")
graph, err := deb.BuildGraph(context.CollectionFactory())
if err != nil {
return err
}
buf := bytes.NewBufferString(graph.String())
tempfile, err := ioutil.TempFile("", "aptly-graph")
if err != nil {
return err
}
tempfile.Close()
os.Remove(tempfile.Name())
format := context.Flags().Lookup("format").Value.String()
output := context.Flags().Lookup("output").Value.String()
if filepath.Ext(output) != "" {
format = filepath.Ext(output)[1:]
}
tempfilename := tempfile.Name() + "." + format
command := exec.Command("dot", "-T"+format, "-o"+tempfilename)
command.Stderr = os.Stderr
stdin, err := command.StdinPipe()
if err != nil {
return err
}
err = command.Start()
if err != nil {
return fmt.Errorf("unable to execute dot: %s (is graphviz package installed?)", err)
}
_, err = io.Copy(stdin, buf)
if err != nil {
return err
}
err = stdin.Close()
if err != nil {
return err
}
err = command.Wait()
if err != nil {
return err
}
if output != "" {
err = utils.CopyFile(tempfilename, output)
if err != nil {
return fmt.Errorf("unable to copy %s -> %s: %s", tempfilename, output, err)
}
_ = os.Remove(tempfilename)
fmt.Printf("Output saved to %s\n", output)
} else {
fmt.Printf("Rendered to %s file: %s, trying to open it...\n", format, tempfilename)
_ = exec.Command("open", tempfilename).Run()
}
return err
}