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 file: Input the credential from the specified file.
-n, --no-output: Discard all output, both metadata and payload.
-m, --metadata file: Output metadata to the specified file.
-o, --output file: 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.
-S, --socket path: Specify the local domain 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.

AUTHOR

Chris Dunlap <cdunlap@llnl.gov>

COPYRIGHT

MUNGE is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Additionally for the MUNGE library (libmunge), you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.