With MySQL use cast(okey as unsigned) instead of cast(okey as integer) #632
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The autologin ("Save information") functionality in 2.3.1 is broken since
commit 52a41b3
CommitDate: Fri Mar 23 18:01:32 2018 +0100
Rework autologin to use a token approach
Although a cookie serendipity[author_autologintoken] with correct
expiration (one month) which random data content is present as value
in the serendipity_options table with name autologin_Username and
correct timestamp as okey and that is found with manually executing
the SQL statement
SELECT name, value, okey FROM serendipity_options WHERE name = 'autologin_Username' AND okey > 1565801743 LIMIT 1
like done in include/functions_config.inc.php
serendipity_checkAutologin(), the login is forgotten after 30 minutes
or so. That was not the case with 2.1.5 where the login was valid for
weeks.
Of
if (stristr($serendipity['dbType'], 'sqlite')) {
$cast = "okey";
} else {
// Adds explicits casting for mysql, postgresql and others.
$cast = "cast(okey as integer)";
}
from which $cast then is used in the SQL statement instead of a plain
okey; when doing that manually with
SELECT name, value, okey FROM serendipity_options WHERE name = 'autologin_Username' AND cast(okey as integer) > 1565801743 LIMIT 1
it produces the MySQL error
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'integer) > 1565801743 LIMIT 1' at line 1
This also with $serendipity['dbType'] = 'mysqli' for the above code.
Indeed, cast(okey as integer) is invalid in MySQL and should be
cast(okey as unsigned) instead which then also works manually, see
https://stackoverflow.com/a/12127022 and
https://dev.mysql.com/doc/refman/5.7/en/cast-functions.html#function_cast
Same in serendipity_issueAutologin().
Changing those two places accordingly resolves the autologin not
persistent problem.
Additionally, inspecting the serendipity_options table revealed loads
of old serendipity[author_authorinformation] cookie information that
was never deleted in serendipity_issueAutologin() with the
OR (okey LIKE 'l_%' AND $cast < " . (time() - 1814400) . ")")
expression producing a MySQL error. This has to be done manually
once as also 2.3.1 will not delete it anymore.
|
This commit should also be cherry-picked to the 2.3 branch. |
|
Hi. First, thanks for looking into this! I'm very happy to know that more people looked into this functionality. How sure are you about this? If the integer is wrong, it would have died before. 52a41b3 did not introduce the code, it only changed the column that is used from name to okey. See 52a41b3#diff-f3383c67d4cb22067df9aa4d87697a23L437. I did not test this with MySQL, iirc - my dev blog uses sqlite. So it's absolutely possible this code is wrong. But it's not a good start for this fix if the diagnosis is wrong. Am I missing something here? |
th-h
added
backport needed
Quite sure, as my blog is now running successfully preserving the autologin since the change ;-)
Only the cast(okey as integer) is wrong and apparently the MySQL error is silent in this case. Either swallowed by PHP, or munged by the logout / forced login following that. However, the old (pre-2.3) code using the same wrong cast for the
No, the commit also introduced the code at line 460 then with the cast at line 464. That's exactly what I'm looking at now.
Looking at a different commit diff? I don't know. |
Okay. My point was that it just copied the cast from line 443 :) |
The autologin ("Save information") functionality in 2.3.1 is broken since
Although a cookie serendipity[author_autologintoken] with correct
expiration (one month) which random data content is present as value
in the serendipity_options table with name autologin_Username and
correct timestamp as okey and that is found with manually executing
the SQL statement
SELECT name, value, okey FROM serendipity_options WHERE name = 'autologin_Username' AND okey > 1565801743 LIMIT 1
like done in include/functions_config.inc.php
serendipity_checkAutologin(), the login is forgotten after 30 minutes
or so. That was not the case with 2.1.5 where the login was valid for
weeks.
Of
from which $cast then is used in the SQL statement instead of a plain
okey; when doing that manually with
SELECT name, value, okey FROM serendipity_options WHERE name = 'autologin_Username' AND cast(okey as integer) > 1565801743 LIMIT 1
it produces the MySQL error
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'integer) > 1565801743 LIMIT 1' at line 1
This also with $serendipity['dbType'] = 'mysqli' for the above code.
Indeed, cast(okey as integer) is invalid in MySQL and should be
cast(okey as unsigned) instead which then also works manually, see
https://stackoverflow.com/a/12127022 and
https://dev.mysql.com/doc/refman/5.7/en/cast-functions.html#function_cast
Same in serendipity_issueAutologin().
Changing those two places accordingly resolves the autologin not
persistent problem.
Additionally, inspecting the serendipity_options table revealed loads
of old serendipity[author_authorinformation] cookie information that
was never deleted in serendipity_issueAutologin() with the
OR (okey LIKE 'l_%' AND $cast < " . (time() - 1814400) . ")")
expression producing a MySQL error. This has to be done manually
once as also 2.3.1 will not delete it anymore.