[exim] Exim 4.94 $readsocket bug

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Szerző: Yehor Lite
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Címzett: exim-users@exim.org
Tárgy: [exim] Exim 4.94 $readsocket bug
Hello.


Faced an error in the work of the readsocket .

${readsocket{<name>}{<request>}{<options>}{<eol string>}{<fail
string>}}


The problem arises when using the fourth argument ({<eol string>}) .

It forcibly removes all "\n" from the string it receives when
requested.

In theory, everyone who uses memcached should have encountered this
error.


Example:

${readsocket{inet:MEMCACHED_HOST:MEMCACHED_PORT}{get
$acl_c_memcache_key\r\n}{5s}{\n}}


In version 4.93 and lowest, this request will return:

"VALUE 123.123.123.123 0 21\r\ntest@???\r\nEND\r\n"


In version 4.94:
"VALUE 123.123.123.123 0 21\rtest@???\rEND\r"

Without "{\n}" argument, this request will return:

"VALUE 123.123.123.123 0 21\r\ntest@???\r\nEND\r\n"


The current version of exim is:

# exim --version

Exim version 4.94 #1 (FreeBSD 11.2) built 27-Jul-2020 15:46:45


Has anyone encountered this error?

Are there already existing solutions to it?

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