Software /
code /
prosody
File
doc/stanza_routing.txt @ 11748:88ba05494d17 0.11
makefile: fix prosody.version target
POSIX is quite explicit regarding the precedence of AND-OR lists [0]:
> The operators "&&" and "||" shall have equal precedence and shall be
> evaluated with left associativity. For example, both of the following
> commands write solely `bar` to standard output:
> false && echo foo || echo bar
> true || echo foo && echo bar
Given that, `prosody.version` target behaves as
((((((test -f prosody.release && cp ...) ||
test -f ...) &&
sed ...) ||
test -f ...) &&
hexdump ...) ||
echo unknown > $@)
In the case of release tarballs, `prosody.release` does exist, so the
first AND pair is executed. Given that it's successful, then the first
`test -f` in the OR pair is ignored, and instead the `sed` in the AND
pair is executed. `sed` success, as `.hg_archival.txt` exists, making
the second `test -f` in the OR pair ignored, and `hexdump` in the AND
pair is executed. Now, given that `.hg` doesn't exist, it fails, so the
last `echo` is run, overwriting `prosody.version` with `unknown`.
This can be worked around placing `()` around the AND pairs. Decided to use
conditionals instead, as I think they better communicate the intention
of the block.
[0]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_03
author | Lucas <lucas@sexy.is> |
---|---|
date | Sun, 15 Aug 2021 04:10:36 +0000 |
parent | 22:2856dfc1f5cc |
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No 'to' attribute: IQ: Pass to appropriate handler Presence: Broadcast to contacts - if initial presence, also send out presence probes - if probe would be to local user, generate presence stanza for them Message: Route as if it is addressed to the bare JID of the sender To a local host: IQ: Pass to appropriate handler Presence: - Message: Deliver to admin? To local contact: Bare JID: IQ: Pass to appropriate handler Presence: Broadcast to all resources Message: Route to 'best' resource Full JID: IQ: Send to resource Presence: Send to resource Message: Send to resource Full JID but resource not connected: IQ: Return service-unavailable Message: Handle same as if to bare JID Presence: Drop (unless type=subscribe[ed]) To remote contact: Initiate s2s connection if necessary Send stanza across