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Introduce macro for common plugin structure elements

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Heimdal's HDB plugin interface, and hence Samba's KDC that depends upon
it, doesn't work on 32-bit builds due to structure fields being arranged
in the wrong order. This problem presents itself in the form of
segmentation faults on 32-bit systems, but goes unnoticed on 64-bit
builds thanks to extra structure padding absorbing the errant fields.

This commit reorders the HDB plugin structure fields to prevent crashes
and introduces a common macro to ensure every plugin presents a
consistent interface.

Samba BUG: https://bugzilla.samba.org/show_bug.cgi?id=15110

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
This commit is contained in:
Joseph Sutton
2022-10-22 10:11:53 +13:00
committed by Nico Williams
parent 16179383fb
commit cfb32a638e
17 changed files with 57 additions and 63 deletions
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2
lib/base/plugin.c
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@@ -653,7 +653,7 @@ reduce_by_version(heim_object_t value, void *ctx, int *stop)
struct iter_ctx *s = ctx;
struct heim_plugin *pl = value;
if (pl->ftable && pl->ftable->version >= s->caller->min_version)
if (pl->ftable && pl->ftable->minor_version >= s->caller->min_version)
heim_array_append_value(s->result, pl);
}