mailbox.conf(5)

19.82. mailbox.conf(5)#

19.82.1. Name#

mailbox.conf - taler-mailbox configuration file

19.82.2. Description#

The configuration file is line-oriented. Blank lines and whitespace at the beginning and end of a line are ignored. Comments start with # or % in the first column (after any beginning-of-line whitespace) and go to the end of the line.

The file is split into sections. Every section begins with [SECTIONNAME] and contains a number of options of the form OPTION=VALUE. There may be whitespace around the = (equal sign). Section names and options are case-insensitive.

The values, however, are case-sensitive. In particular, boolean values are one of YES or NO. Values can include whitespace by surrounding the entire value with " (double quote). Note, however, that there are no escape characters in such strings; all characters between the double quotes (including other double quotes) are taken verbatim.

Values that represent a time duration are represented as a series of one or more NUMBER UNIT pairs, e.g. 60 s, 4 weeks 1 day, 5 years 2 minutes.

Values that represent an amount are in the usual amount syntax: CURRENCY:VALUE.FRACTION, e.g. EUR:1.50. The FRACTION portion may extend up to 8 places.

Values that represent filenames can begin with a /bin/sh-like variable reference. This can be simple, such as $TMPDIR/foo, or complex, such as ${TMPDIR:-${TMP:-/tmp}}/foo. The variables are expanded either using key-values from the [PATHS] section (see below) or from the environment (getenv()). The values from [PATHS] take precedence over those from the environment. If the variable name is found in neither [PATHS] nor the environment, a warning is printed and the value is left unchanged. Variables (including those from the environment) are expanded recursively, so if FOO=$BAR and BAR=buzz then the result is FOO=buzz. Recursion is bounded to at most 128 levels to avoid undefined behavior for mutually recursive expansions like if BAR=$FOO in the example above.

The [PATHS] section is special in that it contains paths that can be referenced using $ in other configuration values that specify filenames. Note that configuration options that are not specifically retrieved by the application as filenames will not see “$”-expressions expanded. To expand $-expressions when using taler-config, you must pass the -f command-line option.

The system automatically pre-populates the [PATHS] section with a few values at run-time (in addition to the values that are in the actual configuration file and automatically overwriting those values if they are present). These automatically generated values refer to installation properties from GNU autoconf. The values are usually dependent on an INSTALL_PREFIX which is determined by the --prefix option given to configure. The canonical values are:

  • LIBEXECDIR = $INSTALL_PREFIX/taler/libexec/

  • DOCDIR = $INSTALL_PREFIX/share/doc/taler/

  • ICONDIR = $INSTALL_PREFIX/share/icons/

  • LOCALEDIR = $INSTALL_PREFIX/share/locale/

  • PREFIX = $INSTALL_PREFIX/

  • BINDIR = $INSTALL_PREFIX/bin/

  • LIBDIR = $INSTALL_PREFIX/lib/taler/

  • DATADIR = $INSTALL_PREFIX/share/taler/

Note that on some platforms, the given paths may differ depending on how the system was compiled or installed, the above are just the canonical locations of the various resources. These automatically generated values are never written to disk.

Files containing default values for many of the options described below are installed under $PREFIX/share/taler-mailbox/config.d/. The configuration file given with -c to taler-mailbox binaries overrides these defaults.

A configuration file may include another, by using the @INLINE@ directive, for example, in main.conf, you could write @INLINE@ sub.conf to include the entirety of sub.conf at that point in main.conf.

Be extra careful when using taler-mailbox-config -V VALUE to change configuration values: it will destroy all uses of @INLINE@ and furthermore remove all comments from the configuration file!

19.82.2.1. GLOBAL OPTIONS#

The following options are from the “[mailbox]” section.

BASE_URL

The base URL of the service. If your service is proxied, the external base URL this service is availiable at. Default: https://example.com

MAX_BODY_BYTES

Number of bytes of the challenge. Default: 256

MESSAGE_RESPONSE_LIMIT

Maximum number of messages returned in a single response. Default: 50

MONTHLY_FEE

Monthly fee of this service. Default: KUDOS:0

REGISTRATION_UPDATE_FEE

Registration modification fee. Default: KUDOS:0

MESSAGE_FEE

Cost for sending a message to a mailbox. Default: KUDOS:0

FREE_MESSAGE_QUOTA

Number of messages that can be sent for free Default: 0

PENDING_REGISTRATION_EXPIRATION

Lifetime of a pending (unpaid) registration until it is purged from the database. Default: 24h

19.82.3. SEE ALSO#

taler-mailbox-dbinit(1), taler-mailbox-httpd(1), taler-mailbox-config(1).

19.82.4. BUGS#

Report bugs by using https://bugs.taler.net/ or by sending electronic mail to <taler@gnu.org>.