116 lines
3.6 KiB
Go
116 lines
3.6 KiB
Go
package sync
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import (
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"bufio"
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"encoding/hex"
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"fmt"
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"path"
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"strings"
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"unicode"
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"srs.epita.fr/fic-server/libfic"
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)
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func buildFilesListInto(i Importer, exercice fic.Exercice, into string) (files []string, digests map[string][]byte, errs []string) {
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// If no files directory, don't display error
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if !i.exists(path.Join(exercice.Path, into)) {
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return
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}
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// Parse DIGESTS.txt
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if digs, err := getFileContent(i, path.Join(exercice.Path, into, "DIGESTS.txt")); err != nil {
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errs = append(errs, fmt.Sprintf("%q: unable to read DIGESTS.txt: %s", path.Base(exercice.Path), err))
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} else {
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digests = map[string][]byte{}
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for nline, d := range strings.Split(digs, "\n") {
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if dsplt := strings.SplitN(d, " ", 2); len(dsplt) < 2 {
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errs = append(errs, fmt.Sprintf("%q: unable to parse DIGESTS.txt line %d: invalid format", path.Base(exercice.Path), nline+1))
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continue
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} else if hash, err := hex.DecodeString(dsplt[0]); err != nil {
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errs = append(errs, fmt.Sprintf("%q: unable to parse DIGESTS.txt line %d: %s", path.Base(exercice.Path), nline+1, err))
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continue
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} else {
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digests[strings.TrimFunc(dsplt[1], unicode.IsSpace)] = hash
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}
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}
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}
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// Read file list
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if flist, err := i.listDir(path.Join(exercice.Path, into)); err != nil {
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errs = append(errs, err.Error())
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} else {
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for _, fname := range flist {
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if fname == "DIGESTS.txt" {
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continue
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}
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if matched, _ := path.Match("*.00", fname); matched {
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fname = fname[:len(fname)-3]
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} else if matched, _ := path.Match("*00", fname); matched {
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fname = fname[:len(fname)-2]
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} else if matched, _ := path.Match("*_MERGED", fname); matched {
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continue
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}
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fileFound := false
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for _, f := range files {
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if fname == f {
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fileFound = true
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break
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}
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}
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if !fileFound {
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files = append(files, fname)
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}
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}
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}
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return
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}
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// CheckExerciceFiles checks that remote files have the right digest.
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func CheckExerciceFiles(i Importer, exercice fic.Exercice) (files []fic.EFile, errs []string) {
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flist, digests, berrs := buildFilesListInto(i, exercice, "files")
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errs = append(errs, berrs...)
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for _, fname := range flist {
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w, hash160, hash512 := fic.CreateHashBuffers()
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if err := i.getFile(path.Join(exercice.Path, "files", fname), bufio.NewWriter(w)); err != nil {
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errs = append(errs, fmt.Sprintf("%q: unable to read file %q: %s", path.Base(exercice.Path), fname, err))
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continue
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} else if _, err := fic.CheckBufferHash(hash160, hash512, digests[fname]); err != nil {
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errs = append(errs, fmt.Sprintf("%q: %s: %s", path.Base(exercice.Path), fname, err))
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}
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files = append(files, fic.EFile{Name: fname})
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}
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return
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}
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// SyncExerciceFiles reads the content of files/ directory and import it as EFile for the given challenge.
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// It takes care of DIGESTS.txt and ensure imported files match.
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func SyncExerciceFiles(i Importer, exercice fic.Exercice) (errs []string) {
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if _, err := exercice.WipeFiles(); err != nil {
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errs = append(errs, err.Error())
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}
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files, digests, berrs := buildFilesListInto(i, exercice, "files")
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errs = append(errs, berrs...)
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// Import standard files
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for _, fname := range files {
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if f, err := i.importFile(path.Join(exercice.Path, "files", fname),
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func(filePath string, origin string) (interface{}, error) {
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return exercice.ImportFile(filePath, origin, digests[fname])
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}); err != nil {
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errs = append(errs, fmt.Sprintf("%q: unable to import file %q: %s", path.Base(exercice.Path), fname, err))
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continue
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} else if f.(fic.EFile).Size == 0 {
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errs = append(errs, fmt.Sprintf("%q: WARNING imported file %q is empty!", path.Base(exercice.Path), fname))
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}
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}
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return
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}
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