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Commit544ccf6

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Disallow invalid path elements in jsonb_set
Null path elements and, where the object is an array, invalid integerelements now cause an error.Incorrect behaviour noted by Thom Brown, patch from Dmitry Dolgov.Backpatch to 9.5 where jsonb_set was introduced
1 parente45f8f8 commit544ccf6

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4 files changed

+25
-31
lines changed

4 files changed

+25
-31
lines changed

‎src/backend/utils/adt/jsonfuncs.c‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -3724,6 +3724,9 @@ setPath(JsonbIterator **it, Datum *path_elems,
37243724
JsonbValue*res=NULL;
37253725
intr;
37263726

3727+
if (path_nulls[level])
3728+
elog(ERROR,"path element at the position %d is NULL",level+1);
3729+
37273730
r=JsonbIteratorNext(it,&v, false);
37283731

37293732
switch (r)
@@ -3875,7 +3878,7 @@ setPathArray(JsonbIterator **it, Datum *path_elems, bool *path_nulls,
38753878
lindex=strtol(c,&badp,10);
38763879
if (errno!=0||badp==c||*badp!='\0'||lindex>INT_MAX||
38773880
lindex<INT_MIN)
3878-
idx=nelems;
3881+
elog(ERROR,"path element at the position %d is not an integer",level+1);
38793882
else
38803883
idx=lindex;
38813884
}

‎src/test/regress/expected/jsonb.out‎

Lines changed: 9 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -3127,11 +3127,7 @@ select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::j
31273127
(1 row)
31283128

31293129
select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb, '{d,NULL,0}', '[1,2,3]');
3130-
jsonb_set
3131-
---------------------------------------------------------------------
3132-
{"a": 1, "b": [1, 2], "c": {"1": 2}, "d": {"1": [2, 3]}, "n": null}
3133-
(1 row)
3134-
3130+
ERROR: path element at the position 2 is NULL
31353131
select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb, '{n}', '{"1": 2}');
31363132
jsonb_set
31373133
-------------------------------------------------------------------------
@@ -3151,11 +3147,7 @@ select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::j
31513147
(1 row)
31523148

31533149
select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb, '{d,NULL,0}', '{"1": 2}');
3154-
jsonb_set
3155-
---------------------------------------------------------------------
3156-
{"a": 1, "b": [1, 2], "c": {"1": 2}, "d": {"1": [2, 3]}, "n": null}
3157-
(1 row)
3158-
3150+
ERROR: path element at the position 2 is NULL
31593151
select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb, '{b,-1}', '"test"');
31603152
jsonb_set
31613153
--------------------------------------------------------------------------
@@ -3199,11 +3191,7 @@ select '{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb #- '{
31993191
(1 row)
32003192

32013193
select '{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb #- '{b,-1e}'; -- invalid array subscript
3202-
?column?
3203-
---------------------------------------------------------------------
3204-
{"a": 1, "b": [1, 2], "c": {"1": 2}, "d": {"1": [2, 3]}, "n": null}
3205-
(1 row)
3206-
3194+
ERROR: path element at the position 2 is not an integer
32073195
select '{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb #- '{d,1,0}';
32083196
?column?
32093197
------------------------------------------------------------------
@@ -3331,3 +3319,9 @@ select jsonb_set('[]','{-99}','{"foo":123}');
33313319
[{"foo": 123}]
33323320
(1 row)
33333321

3322+
select jsonb_set('{"a": [1, 2, 3]}', '{a, non_integer}', '"new_value"');
3323+
ERROR: path element at the position 2 is not an integer
3324+
select jsonb_set('{"a": {"b": [1, 2, 3]}}', '{a, b, non_integer}', '"new_value"');
3325+
ERROR: path element at the position 3 is not an integer
3326+
select jsonb_set('{"a": {"b": [1, 2, 3]}}', '{a, b, NULL}', '"new_value"');
3327+
ERROR: path element at the position 3 is NULL

‎src/test/regress/expected/jsonb_1.out‎

Lines changed: 9 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -3127,11 +3127,7 @@ select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::j
31273127
(1 row)
31283128

31293129
select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb, '{d,NULL,0}', '[1,2,3]');
3130-
jsonb_set
3131-
---------------------------------------------------------------------
3132-
{"a": 1, "b": [1, 2], "c": {"1": 2}, "d": {"1": [2, 3]}, "n": null}
3133-
(1 row)
3134-
3130+
ERROR: path element at the position 2 is NULL
31353131
select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb, '{n}', '{"1": 2}');
31363132
jsonb_set
31373133
-------------------------------------------------------------------------
@@ -3151,11 +3147,7 @@ select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::j
31513147
(1 row)
31523148

31533149
select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb, '{d,NULL,0}', '{"1": 2}');
3154-
jsonb_set
3155-
---------------------------------------------------------------------
3156-
{"a": 1, "b": [1, 2], "c": {"1": 2}, "d": {"1": [2, 3]}, "n": null}
3157-
(1 row)
3158-
3150+
ERROR: path element at the position 2 is NULL
31593151
select jsonb_set('{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb, '{b,-1}', '"test"');
31603152
jsonb_set
31613153
--------------------------------------------------------------------------
@@ -3199,11 +3191,7 @@ select '{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb #- '{
31993191
(1 row)
32003192

32013193
select '{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb #- '{b,-1e}'; -- invalid array subscript
3202-
?column?
3203-
---------------------------------------------------------------------
3204-
{"a": 1, "b": [1, 2], "c": {"1": 2}, "d": {"1": [2, 3]}, "n": null}
3205-
(1 row)
3206-
3194+
ERROR: path element at the position 2 is not an integer
32073195
select '{"n":null, "a":1, "b":[1,2], "c":{"1":2}, "d":{"1":[2,3]}}'::jsonb #- '{d,1,0}';
32083196
?column?
32093197
------------------------------------------------------------------
@@ -3331,3 +3319,9 @@ select jsonb_set('[]','{-99}','{"foo":123}');
33313319
[{"foo": 123}]
33323320
(1 row)
33333321

3322+
select jsonb_set('{"a": [1, 2, 3]}', '{a, non_integer}', '"new_value"');
3323+
ERROR: path element at the position 2 is not an integer
3324+
select jsonb_set('{"a": {"b": [1, 2, 3]}}', '{a, b, non_integer}', '"new_value"');
3325+
ERROR: path element at the position 3 is not an integer
3326+
select jsonb_set('{"a": {"b": [1, 2, 3]}}', '{a, b, NULL}', '"new_value"');
3327+
ERROR: path element at the position 3 is NULL

‎src/test/regress/sql/jsonb.sql‎

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -816,3 +816,6 @@ select jsonb_set('{}','{x}','{"foo":123}');
816816
select jsonb_set('[]','{0}','{"foo":123}');
817817
select jsonb_set('[]','{99}','{"foo":123}');
818818
select jsonb_set('[]','{-99}','{"foo":123}');
819+
select jsonb_set('{"a": [1, 2, 3]}','{a, non_integer}','"new_value"');
820+
select jsonb_set('{"a": {"b": [1, 2, 3]}}','{a, b, non_integer}','"new_value"');
821+
select jsonb_set('{"a": {"b": [1, 2, 3]}}','{a, b, NULL}','"new_value"');

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