tree fdcb0b9f78483830a934cec04348459ba39e6ba8
parent c177ea7187bc1918a1900c1b0e3fc67c559987a2
author Willy Tarreau <w@1wt.eu> 1403708201 +0200
committer Willy Tarreau <w@1wt.eu> 1403710190 +0200
encoding latin1

BUG/MAJOR: sample: correctly reinitialize sample fetch context before calling sample_process()

We used to only clear flags when reusing the static sample before calling
sample_process(), but that's not enough because there's a context in samples
that can be used by some fetch functions such as auth, headers and cookies,
and not reinitializing it risks that a pointer of a different type is used
in the wrong context.

An example configuration which triggers the case consists in mixing hdr()
and http_auth_group() which both make use of contexts :

     http-request add-header foo2 %[hdr(host)],%[http_auth_group(foo)]

The solution is simple, initialize all the sample and not just the flags.
This fix must be backported into 1.5 since it was introduced in 1.5-dev19.
(cherry picked from commit 6c616e0b96106dd33d183afbda31e72799e967c3)