Man 1 unmunge

Name

unmunge -- MUNGE credential decoder

Synopsis

unmunge [OPTION] ...

Description

The unmunge program validates a MUNGE credential (e.g., one created by the munge program).

By default, the credential is read from stdin and the metadata and payload are written to stdout. When the metadata and payload are written to the same stream, they are separated by a blank line.

Options

• -h, --help
  Display a summary of the command-line options.

• -L, --license
  Display license information.

• -V, --version
  Display version information.

• -i, --input path
  Input the credential from the specified file.

• -n, --no-output
  Discard all output, both metadata and payload.

• -m, --metadata path
  Output metadata to the specified file.

• -o, --output path
  Output the payload to the specified file.

• -k, --keys string
  Specify a subset of metadata keys to output. The keys are case-insensitive and delimited by whitespace, commas, semicolons, or periods -- as long as the string is treated as a single argument by the shell (e.g., enclosed by quotes). Invalid keys are ignored. If a subset is not specified, all available keys are selected by default.

• -K, --list-keys
  Display a list of metadata keys.

• -N, --numeric
  Display metadata values numerically. This omits conversions from IP addresses to hostnames, seconds to date and time strings, UIDs to user names, GIDs to group names, and cipher/mac/zip type lookups. [Added in 0.5.14]

• -S, --socket path
  Specify the local socket for connecting with munged.

Metadata Keys

The following metadata keys are supported.

• STATUS
  The status of the credential decode operation.

• ENCODE_HOST
  The address of the host on which the credential was encoded.

• ENCODE_TIME
  The time at which the credential was encoded (according to the local clock of the host that encoded it).

• DECODE_TIME
  The time at which the credential was decoded (according to the local clock of the host that decoded it).

• TTL
  The time-to-live value (in seconds) placed within the credential.

• CIPHER
  The cipher type used to encode the credential.

• MAC
  The MAC type used to encode the credential.

• ZIP
  The compression type used to encode the credential.

• UID
  The user ID of the process that encoded the credential.

• GID
  The group ID of the process that encoded the credential.

• UID_RESTRICTION
  The user ID restriction placed within the credential.

• GID_RESTRICTION
  The group ID restriction placed within the credential.

• LENGTH
  The length (in bytes) of the payload.

Exit Status

The unmunge program returns an exit code corresponding to the return code of munge_decode(). On success, it returns a zero exit code which signifies the credential is valid. On error, it prints an error message to stderr and returns a non-zero exit code.