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Enforce cube dimension limit in all cube construction functions

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contrib/cube has a limit to 100 dimensions for cube datatype.  However, it's
not enforced everywhere, and one can actually construct cube with more than
100 dimensions having then trouble with dump/restore.  This commit add checks
for dimensions limit in all functions responsible for cube construction.
Backpatch to all supported versions.

Reported-by: Andrew Gierth
Discussion: https://postgr.es/m/87va7uybt4.fsf%40news-spur.riddles.org.uk
Author: Andrey Borodin with small additions by me
Review: Tom Lane
Backpatch-through: 9.3
This commit is contained in:
Alexander Korotkov
2018-08-30 14:18:53 +03:00
parent 26cbd23259
commit b187dae9d0
3 changed files with 93 additions and 1 deletions
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40
contrib/cube/expected/cube.out
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@ -381,6 +381,17 @@ SELECT cube_subset(cube('(1,3,5),(6,7,8)'), ARRAY[4,0]);
ERROR: Index out of bounds
SELECT cube_subset(cube('(6,7,8),(6,7,8)'), ARRAY[4,0]);
ERROR: Index out of bounds
-- test for limits: this should pass
SELECT cube_subset(cube('(6,7,8),(6,7,8)'), array(SELECT 1 as a FROM generate_series(1,100)));
cube_subset
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6)
(1 row)
-- and this should fail
SELECT cube_subset(cube('(6,7,8),(6,7,8)'), array(SELECT 1 as a FROM generate_series(1,101)));
ERROR: array is too long
DETAIL: A cube cannot have more than 100 dimensions.
--
-- Test point processing
--
@ -453,6 +464,7 @@ SELECT cube(cube(1,2), 42, 24); -- cube_c_f8_f8
--
-- Testing limit of CUBE_MAX_DIM dimensions check in cube_in.
--
-- create too big cube from literal
select '(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)'::cube;
ERROR: bad cube representation
LINE 1: select '(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0...
@ -463,6 +475,34 @@ ERROR: bad cube representation
LINE 1: select '(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0...
^
DETAIL: A cube cannot have more than 100 dimensions.
-- from an array
select cube(array(SELECT 0 as a FROM generate_series(1,101)));
ERROR: array is too long
DETAIL: A cube cannot have more than 100 dimensions.
select cube(array(SELECT 0 as a FROM generate_series(1,101)),array(SELECT 0 as a FROM generate_series(1,101)));
ERROR: can't extend cube
DETAIL: A cube cannot have more than 100 dimensions.
-- extend cube beyond limit
-- this should work
select cube(array(SELECT 0 as a FROM generate_series(1,100)));
cube
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
(1 row)
select cube(array(SELECT 0 as a FROM generate_series(1,100)),array(SELECT 0 as a FROM generate_series(1,100)));
cube
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
(1 row)
-- this should fail
select cube(cube(array(SELECT 0 as a FROM generate_series(1,100))), 0);
ERROR: can't extend cube
DETAIL: A cube cannot have more than 100 dimensions.
select cube(cube(array(SELECT 0 as a FROM generate_series(1,100)),array(SELECT 0 as a FROM generate_series(1,100))), 0, 0);
ERROR: can't extend cube
DETAIL: A cube cannot have more than 100 dimensions.
--
-- testing the operators
--