// fileContains checks whether a file matches a given regex
func fileContains(parameters []string) (exitCode int, exitMessage string) {
path := parameters[0]
regex := wrkutils.ParseUserRegex(parameters[1])
if regex.Match(wrkutils.FileToBytes(path)) {
return 0, ""
}
msg := "File does not match regexp:\n\tFile: "
return 1, msg + path + "\n\tRegexp" + regex.String()
}
// checksum checks the hash of a given file using the given algorithm
func checksum(parameters []string) (exitCode int, exitMessage string) {
// getChecksum returns the checksum of some data, using a specified
// algorithm
getChecksum := func(algorithm string, data []byte) (checksum string) {
algorithm = strings.ToUpper(algorithm)
// default
hasher := md5.New()
switch algorithm {
case "SHA1":
hasher = sha1.New()
case "SHA224":
hasher = sha256.New224()
case "SHA256":
hasher = sha256.New()
case "SHA384":
hasher = sha512.New384()
case "SHA512":
hasher = sha512.New()
}
hasher.Write(data)
str := hex.EncodeToString(hasher.Sum(nil))
return str
}
// getFileChecksum is self-explanatory
getFileChecksum := func(algorithm string, path string) (checksum string) {
return getChecksum(algorithm, wrkutils.FileToBytes(path))
}
algorithm := parameters[0]
checkAgainst := parameters[1]
path := parameters[2]
chksum := getFileChecksum(algorithm, path)
// TODO warn on unequal lengths
if chksum == checkAgainst {
return 0, ""
}
msg := "Checksums do not match for file: " + path
return wrkutils.GenericError(msg, checkAgainst, []string{chksum})
}
// checklistFromFile reads the file at the path and parses its utf8 encoded json
// data, turning it into a checklist struct.
func checklistFromFile(path string) (chklst Checklist) {
return checklistFromBytes(wrkutils.FileToBytes(path))
}