[Tarantool-patches] [PATCH v1 1/2] sql: disallow explicit cast of BOOLEAN to number
imeevma at tarantool.org
imeevma at tarantool.org
Wed Jul 21 18:10:21 MSK 2021
This patch removes explicit cast of BOOLEAN values to numeric types and
explicit cast of numeric values to BOOLEAN.
Part of #4470
---
src/box/sql/mem.c | 74 +++++------------------
test/sql-tap/cast.test.lua | 102 +++++++++++++++++++++++++++++++-
test/sql-tap/cse.test.lua | 18 +++---
test/sql-tap/e_select1.test.lua | 3 +-
test/sql-tap/in1.test.lua | 17 +++---
test/sql-tap/misc3.test.lua | 2 +-
test/sql/boolean.result | 71 +++++++++++-----------
test/sql/boolean.test.sql | 13 ++--
test/sql/types.result | 14 ++---
9 files changed, 187 insertions(+), 127 deletions(-)
diff --git a/src/box/sql/mem.c b/src/box/sql/mem.c
index 6b95e41d3..5c44bfdfc 100644
--- a/src/box/sql/mem.c
+++ b/src/box/sql/mem.c
@@ -28,6 +28,8 @@
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
+#include <ctype.h>
+
#include "sqlInt.h"
#include "mem.h"
#include "vdbeInt.h"
@@ -634,17 +636,6 @@ int_to_str0(struct Mem *mem)
return mem_copy_str0(mem, str);
}
-static inline int
-int_to_bool(struct Mem *mem)
-{
- assert((mem->type & (MEM_TYPE_INT | MEM_TYPE_UINT)) != 0);
- mem->u.b = mem->u.i != 0;
- mem->type = MEM_TYPE_BOOL;
- assert(mem->flags == 0);
- mem->field_type = FIELD_TYPE_BOOLEAN;
- return 0;
-}
-
static inline int
str_to_str0(struct Mem *mem)
{
@@ -683,24 +674,23 @@ str_to_bool(struct Mem *mem)
{
assert(mem->type == MEM_TYPE_STR);
char *str = mem->z;
+ uint32_t len = mem->n;
bool b;
const char *str_true = "TRUE";
const char *str_false = "FALSE";
uint32_t len_true = strlen(str_true);
uint32_t len_false = strlen(str_false);
- for (; str[0] == ' '; str++);
- if (strncasecmp(str, str_true, len_true) == 0) {
+ for (; isspace(str[0]); str++, len--);
+ for (; isspace(str[len - 1]); len--);
+ if (len != len_true && len != len_false)
+ return -1;
+
+ if (len == len_true && strncasecmp(str, str_true, len) == 0)
b = true;
- str += len_true;
- } else if (strncasecmp(str, str_false, len_false) == 0) {
+ else if (len == len_false && strncasecmp(str, str_false, len) == 0)
b = false;
- str += len_false;
- } else {
- return -1;
- }
- for (; str[0] == ' '; str++);
- if (str[0] != '\0')
+ else
return -1;
mem_set_bool(mem, b);
return 0;
@@ -870,28 +860,6 @@ double_to_str0(struct Mem *mem)
return 0;
}
-static inline int
-double_to_bool(struct Mem *mem)
-{
- assert(mem->type == MEM_TYPE_DOUBLE);
- mem->u.b = mem->u.r != 0.;
- mem->type = MEM_TYPE_BOOL;
- assert(mem->flags == 0);
- mem->field_type = FIELD_TYPE_BOOLEAN;
- return 0;
-}
-
-static inline int
-bool_to_int(struct Mem *mem)
-{
- assert(mem->type == MEM_TYPE_BOOL);
- mem->u.u = (uint64_t)mem->u.b;
- mem->type = MEM_TYPE_UINT;
- assert(mem->flags == 0);
- mem->field_type = FIELD_TYPE_UNSIGNED;
- return 0;
-}
-
static inline int
bool_to_str0(struct Mem *mem)
{
@@ -942,8 +910,6 @@ mem_to_int(struct Mem *mem)
return bytes_to_int(mem);
if (mem->type == MEM_TYPE_DOUBLE)
return double_to_int(mem);
- if (mem->type == MEM_TYPE_BOOL)
- return bool_to_int(mem);
return -1;
}
@@ -979,8 +945,6 @@ mem_to_number(struct Mem *mem)
assert(mem->type < MEM_TYPE_INVALID);
if (mem_is_num(mem))
return 0;
- if (mem->type == MEM_TYPE_BOOL)
- return bool_to_int(mem);
if ((mem->type & (MEM_TYPE_STR | MEM_TYPE_BIN)) != 0) {
if (bytes_to_int(mem) == 0)
return 0;
@@ -1062,8 +1026,6 @@ mem_cast_explicit(struct Mem *mem, enum field_type type)
return bytes_to_uint(mem);
case MEM_TYPE_DOUBLE:
return double_to_uint(mem);
- case MEM_TYPE_BOOL:
- return bool_to_int(mem);
default:
return -1;
}
@@ -1074,19 +1036,11 @@ mem_cast_explicit(struct Mem *mem, enum field_type type)
case FIELD_TYPE_INTEGER:
return mem_to_int(mem);
case FIELD_TYPE_BOOLEAN:
- switch (mem->type) {
- case MEM_TYPE_BOOL:
+ if (mem->type == MEM_TYPE_BOOL)
return 0;
- case MEM_TYPE_INT:
- case MEM_TYPE_UINT:
- return int_to_bool(mem);
- case MEM_TYPE_STR:
+ if (mem->type == MEM_TYPE_STR)
return str_to_bool(mem);
- case MEM_TYPE_DOUBLE:
- return double_to_bool(mem);
- default:
- return -1;
- }
+ return -1;
case FIELD_TYPE_VARBINARY:
if (mem->type == MEM_TYPE_STR)
return str_to_bin(mem);
diff --git a/test/sql-tap/cast.test.lua b/test/sql-tap/cast.test.lua
index 8e7b6640e..3dc49c38e 100755
--- a/test/sql-tap/cast.test.lua
+++ b/test/sql-tap/cast.test.lua
@@ -1,6 +1,6 @@
#!/usr/bin/env tarantool
local test = require("sqltester")
-test:plan(79)
+test:plan(91)
--!./tcltestrunner.lua
-- 2005 June 25
@@ -877,4 +877,104 @@ test:do_execsql_test(
-- </cast-5.1>
})
+-- gh-4470: Make explicit casts work according to our rules.
+
+-- Make sure that explicit cast from BOOLEAN to numeric types throws an error.
+test:do_catchsql_test(
+ "cast-6.1.1",
+ [[
+ SELECT CAST(TRUE AS UNSIGNED);
+ ]], {
+ 1, "Type mismatch: can not convert boolean(TRUE) to unsigned"
+ })
+
+test:do_catchsql_test(
+ "cast-6.1.2",
+ [[
+ SELECT CAST(FALSE AS UNSIGNED);
+ ]], {
+ 1, "Type mismatch: can not convert boolean(FALSE) to unsigned"
+ })
+
+test:do_catchsql_test(
+ "cast-6.1.3",
+ [[
+ SELECT CAST(TRUE AS INTEGER);
+ ]], {
+ 1, "Type mismatch: can not convert boolean(TRUE) to integer"
+ })
+
+test:do_catchsql_test(
+ "cast-6.1.4",
+ [[
+ SELECT CAST(FALSE AS INTEGER);
+ ]], {
+ 1, "Type mismatch: can not convert boolean(FALSE) to integer"
+ })
+
+test:do_catchsql_test(
+ "cast-6.1.5",
+ [[
+ SELECT CAST(TRUE AS DOUBLE);
+ ]], {
+ 1, "Type mismatch: can not convert boolean(TRUE) to double"
+ })
+
+test:do_catchsql_test(
+ "cast-6.1.6",
+ [[
+ SELECT CAST(FALSE AS DOUBLE);
+ ]], {
+ 1, "Type mismatch: can not convert boolean(FALSE) to double"
+ })
+
+test:do_catchsql_test(
+ "cast-6.1.7",
+ [[
+ SELECT CAST(TRUE AS NUMBER);
+ ]], {
+ 1, "Type mismatch: can not convert boolean(TRUE) to number"
+ })
+
+test:do_catchsql_test(
+ "cast-6.1.8",
+ [[
+ SELECT CAST(FALSE AS NUMBER);
+ ]], {
+ 1, "Type mismatch: can not convert boolean(FALSE) to number"
+ })
+
+-- Make sure that explicit cast numeric value to BOOLEAN throws an error.
+test:do_catchsql_test(
+ "cast-6.2.1",
+ [[
+ SELECT CAST(0 AS BOOLEAN);
+ ]], {
+ 1, "Type mismatch: can not convert integer(0) to boolean"
+ })
+
+test:do_catchsql_test(
+ "cast-6.2.2",
+ [[
+ SELECT CAST(-1 AS BOOLEAN);
+ ]], {
+ 1, "Type mismatch: can not convert integer(-1) to boolean"
+ })
+
+test:do_catchsql_test(
+ "cast-6.2.3",
+ [[
+ SELECT CAST(1.5 AS BOOLEAN);
+ ]], {
+ 1, "Type mismatch: can not convert double(1.5) to boolean"
+ })
+
+test:do_catchsql_test(
+ "cast-6.2.4",
+ [[
+ SELECT CAST(CAST(1 AS NUMBER) AS BOOLEAN);
+ ]], {
+ 1, "Type mismatch: can not convert integer(1) to boolean"
+ })
+
test:finish_test()
diff --git a/test/sql-tap/cse.test.lua b/test/sql-tap/cse.test.lua
index e09f955a0..665633aed 100755
--- a/test/sql-tap/cse.test.lua
+++ b/test/sql-tap/cse.test.lua
@@ -31,11 +31,11 @@ test:do_test(
INSERT INTO t1 VALUES(2,21,22,23,24,25);
]]
return test:execsql [[
- SELECT b, -b, ~b, NOT CAST(b AS BOOLEAN), NOT NOT CAST(b AS BOOLEAN), b-b, b+b, b*b, b/b, b FROM t1
+ SELECT b, -b, ~b, b - b, b + b, b * b, b / b, b FROM t1;
]]
end, {
-- <cse-1.1>
- 11, -11, -12, false, true, 0, 22, 121, 1, 11, 21, -21, -22, false, true, 0, 42, 441, 1, 21
+ 11, -11, -12, 0, 22, 121, 1, 11, 21, -21, -22, 0, 42, 441, 1, 21
-- </cse-1.1>
})
@@ -102,7 +102,7 @@ test:do_execsql_test(
test:do_execsql_test(
"cse-1.6.3",
[[
- SELECT CASE WHEN CAST(b AS BOOLEAN) THEN d WHEN CAST(e AS BOOLEAN) THEN f ELSE 999 END, b, c, d FROM t1
+ SELECT CASE WHEN b != 0 THEN d WHEN e != 0 THEN f ELSE 999 END, b, c, d FROM t1;
]], {
-- <cse-1.6.3>
13, 11, 12, 13, 23, 21, 22, 23
@@ -112,7 +112,7 @@ test:do_execsql_test(
test:do_execsql_test(
"cse-1.6.4",
[[
- SELECT b, c, d, CASE WHEN CAST(b AS BOOLEAN) THEN d WHEN CAST(e AS BOOLEAN) THEN f ELSE 999 END FROM t1
+ SELECT b, c, d, CASE WHEN b != 0 THEN d WHEN e != 0 THEN f ELSE 999 END FROM t1;
]], {
-- <cse-1.6.4>
11, 12, 13, 13, 21, 22, 23, 23
@@ -122,7 +122,7 @@ test:do_execsql_test(
test:do_execsql_test(
"cse-1.6.5",
[[
- SELECT b, c, d, CASE WHEN false THEN d WHEN CAST(e AS BOOLEAN) THEN f ELSE 999 END FROM t1
+ SELECT b, c, d, CASE WHEN false THEN d WHEN e != 0 THEN f ELSE 999 END FROM t1;
]], {
-- <cse-1.6.5>
11, 12, 13, 15, 21, 22, 23, 25
@@ -132,10 +132,10 @@ test:do_execsql_test(
test:do_execsql_test(
"cse-1.7",
[[
- SELECT a, -a, ~a, NOT CAST(a AS BOOLEAN), NOT NOT CAST(a AS BOOLEAN), a-a, a+a, a*a, a/a, a FROM t1
+ SELECT a, -a, ~a, a - a, a + a, a * a, a / a, a FROM t1
]], {
-- <cse-1.7>
- 1, -1 ,-2, false, true, 0, 2, 1, 1, 1, 2, -2, -3, false, true, 0, 4, 4, 1, 2
+ 1, -1 ,-2, 0, 2, 1, 1, 1, 2, -2, -3, 0, 4, 4, 1, 2
-- </cse-1.7>
})
@@ -152,10 +152,10 @@ test:do_execsql_test(
test:do_execsql_test(
"cse-1.9",
[[
- SELECT NOT CAST(b AS BOOLEAN), ~b, NOT NOT CAST(b AS BOOLEAN), b FROM t1
+ SELECT ~b, b FROM t1
]], {
-- <cse-1.9>
- false, -12, true, 11, false, -22, true, 21
+ -12, 11, -22, 21
-- </cse-1.9>
})
diff --git a/test/sql-tap/e_select1.test.lua b/test/sql-tap/e_select1.test.lua
index ab0faa376..8293965b8 100755
--- a/test/sql-tap/e_select1.test.lua
+++ b/test/sql-tap/e_select1.test.lua
@@ -910,7 +910,8 @@ test:do_select_tests(
{"3", "SELECT sum(b+1) FROM z1 NATURAL LEFT JOIN z3", {-43.06}},
{"4", "SELECT sum(b+2) FROM z1 NATURAL LEFT JOIN z3", {-38.06}},
- {"5", "SELECT sum(CAST(b IS NOT NULL AS INTEGER)) FROM z1 NATURAL LEFT JOIN z3", {5}},
+ {"5", "SELECT sum(CASE WHEN b IS NOT NULL THEN 1 ELSE 0 END) "..
+ "FROM z1 NATURAL LEFT JOIN z3", {5}},
})
-- EVIDENCE-OF: R-26684-40576 Each non-aggregate expression in the
diff --git a/test/sql-tap/in1.test.lua b/test/sql-tap/in1.test.lua
index 4b51da6e8..bdf1f207a 100755
--- a/test/sql-tap/in1.test.lua
+++ b/test/sql-tap/in1.test.lua
@@ -100,10 +100,11 @@ test:do_execsql_test(
test:do_execsql_test(
"in-1.7",
[[
- SELECT a+ 100*CAST((a BETWEEN 1 and 3) AS INTEGER) FROM t1 ORDER BY b
+ SELECT a, a BETWEEN 1 AND 3 FROM t1 ORDER BY b;
]], {
-- <in-1.7>
- 101, 102, 103, 4, 5, 6, 7, 8, 9, 10
+ 1, true, 2, true, 3, true, 4, false, 5, false,
+ 6, false, 7, false, 8, false, 9, false, 10, false
-- </in-1.7>
})
@@ -157,10 +158,11 @@ test:do_execsql_test(
test:do_execsql_test(
"in-2.5",
[[
- SELECT a+100*(CAST(b IN (8,16,24) AS INTEGER)) FROM t1 ORDER BY b
+ SELECT b, b IN (8,16,24) FROM t1 ORDER BY b;
]], {
-- <in-2.5>
- 1, 2, 103, 104, 5, 6, 7, 8, 9, 10
+ 2, false, 4, false, 8, true, 16, true, 32, false, 64, false,
+ 128, false, 256, false, 512, false, 1024, false
-- </in-2.5>
})
@@ -207,7 +209,7 @@ test:do_execsql_test(
test:do_execsql_test(
"in-2.10",
[[
- SELECT a FROM t1 WHERE LEAST(0, CAST(b IN (a,30) AS INT)) <> 0
+ SELECT a, b FROM t1 WHERE LEAST(TRUE, b IN (a, 30));
]], {
-- <in-2.10>
@@ -253,10 +255,11 @@ test:do_execsql_test(
test:do_execsql_test(
"in-3.3",
[[
- SELECT a + 100*(CAST(b IN (SELECT b FROM t1 WHERE a<5) AS INTEGER)) FROM t1 ORDER BY b
+ SELECT a, b, b IN (SELECT b FROM t1 WHERE a < 5) FROM t1 ORDER BY b;
]], {
-- <in-3.3>
- 101, 102, 103, 104, 5, 6, 7, 8, 9, 10
+ 1, 2, true, 2, 4, true, 3, 8, true, 4, 16, true, 5, 32, false, 6, 64,
+ false, 7, 128, false, 8, 256, false, 9, 512, false, 10, 1024, false
-- </in-3.3>
})
diff --git a/test/sql-tap/misc3.test.lua b/test/sql-tap/misc3.test.lua
index 313484b5d..9add3dd9e 100755
--- a/test/sql-tap/misc3.test.lua
+++ b/test/sql-tap/misc3.test.lua
@@ -510,7 +510,7 @@ test:do_execsql_test(
test:do_execsql_test(
"misc-8.2",
[[
- SELECT count(*) FROM t3 WHERE 1+CAST((b IN ('abc','xyz')) AS INTEGER)==2
+ SELECT count(*) FROM t3 WHERE b IN ('abc','xyz');
]], {
-- <misc-8.2>
2
diff --git a/test/sql/boolean.result b/test/sql/boolean.result
index 5594d92cb..d54de8fe7 100644
--- a/test/sql/boolean.result
+++ b/test/sql/boolean.result
@@ -500,25 +500,25 @@ INSERT INTO t3 VALUES (4, false)
| ...
-- Check CAST from BOOLEAN to the other types.
-SELECT cast(true AS INTEGER), cast(false AS INTEGER);
+SELECT cast(true AS INTEGER);
| ---
- | - metadata:
- | - name: COLUMN_1
- | type: integer
- | - name: COLUMN_2
- | type: integer
- | rows:
- | - [1, 0]
+ | - null
+ | - 'Type mismatch: can not convert boolean(TRUE) to integer'
| ...
-SELECT cast(true AS NUMBER), cast(false AS NUMBER);
+SELECT cast(false AS INTEGER);
| ---
- | - metadata:
- | - name: COLUMN_1
- | type: number
- | - name: COLUMN_2
- | type: number
- | rows:
- | - [1, 0]
+ | - null
+ | - 'Type mismatch: can not convert boolean(FALSE) to integer'
+ | ...
+SELECT cast(true AS NUMBER);
+ | ---
+ | - null
+ | - 'Type mismatch: can not convert boolean(TRUE) to number'
+ | ...
+SELECT cast(false AS NUMBER);
+ | ---
+ | - null
+ | - 'Type mismatch: can not convert boolean(FALSE) to number'
| ...
-- gh-4462: ensure that text representation is uppercase.
SELECT cast(true AS TEXT), cast(false AS TEXT);
@@ -543,27 +543,30 @@ SELECT cast(true AS BOOLEAN), cast(false AS BOOLEAN);
| ...
-- Check CAST to BOOLEAN from the other types.
-SELECT cast(100 AS BOOLEAN), cast(1 AS BOOLEAN), cast(0 AS BOOLEAN);
+SELECT cast(100 AS BOOLEAN);
| ---
- | - metadata:
- | - name: COLUMN_1
- | type: boolean
- | - name: COLUMN_2
- | type: boolean
- | - name: COLUMN_3
- | type: boolean
- | rows:
- | - [true, true, false]
+ | - null
+ | - 'Type mismatch: can not convert integer(100) to boolean'
| ...
-SELECT cast(0.123 AS BOOLEAN), cast(0.0 AS BOOLEAN);
+SELECT cast(1 AS BOOLEAN);
| ---
- | - metadata:
- | - name: COLUMN_1
- | type: boolean
- | - name: COLUMN_2
- | type: boolean
- | rows:
- | - [true, false]
+ | - null
+ | - 'Type mismatch: can not convert integer(1) to boolean'
+ | ...
+SELECT cast(0 AS BOOLEAN);
+ | ---
+ | - null
+ | - 'Type mismatch: can not convert integer(0) to boolean'
+ | ...
+SELECT cast(0.123 AS BOOLEAN);
+ | ---
+ | - null
+ | - 'Type mismatch: can not convert double(0.123) to boolean'
+ | ...
+SELECT cast(0.0 AS BOOLEAN);
+ | ---
+ | - null
+ | - 'Type mismatch: can not convert double(0.0) to boolean'
| ...
SELECT cast('true' AS BOOLEAN), cast('false' AS BOOLEAN);
| ---
diff --git a/test/sql/boolean.test.sql b/test/sql/boolean.test.sql
index 65a830349..13991ca0c 100644
--- a/test/sql/boolean.test.sql
+++ b/test/sql/boolean.test.sql
@@ -127,15 +127,20 @@ INSERT INTO t3 VALUES (3, true)
INSERT INTO t3 VALUES (4, false)
-- Check CAST from BOOLEAN to the other types.
-SELECT cast(true AS INTEGER), cast(false AS INTEGER);
-SELECT cast(true AS NUMBER), cast(false AS NUMBER);
+SELECT cast(true AS INTEGER);
+SELECT cast(false AS INTEGER);
+SELECT cast(true AS NUMBER);
+SELECT cast(false AS NUMBER);
-- gh-4462: ensure that text representation is uppercase.
SELECT cast(true AS TEXT), cast(false AS TEXT);
SELECT cast(true AS BOOLEAN), cast(false AS BOOLEAN);
-- Check CAST to BOOLEAN from the other types.
-SELECT cast(100 AS BOOLEAN), cast(1 AS BOOLEAN), cast(0 AS BOOLEAN);
-SELECT cast(0.123 AS BOOLEAN), cast(0.0 AS BOOLEAN);
+SELECT cast(100 AS BOOLEAN);
+SELECT cast(1 AS BOOLEAN);
+SELECT cast(0 AS BOOLEAN);
+SELECT cast(0.123 AS BOOLEAN);
+SELECT cast(0.0 AS BOOLEAN);
SELECT cast('true' AS BOOLEAN), cast('false' AS BOOLEAN);
SELECT cast('TRUE' AS BOOLEAN), cast('FALSE' AS BOOLEAN);
diff --git a/test/sql/types.result b/test/sql/types.result
index c1e1a8ef1..8da94d126 100644
--- a/test/sql/types.result
+++ b/test/sql/types.result
@@ -1035,11 +1035,8 @@ box.execute("SELECT CAST(18446744073709551615 AS SCALAR);")
...
box.execute("SELECT CAST(18446744073709551615 AS BOOLEAN);")
---
-- metadata:
- - name: COLUMN_1
- type: boolean
- rows:
- - [true]
+- null
+- 'Type mismatch: can not convert integer(18446744073709551615) to boolean'
...
box.execute("SELECT CAST('18446744073709551615' AS INTEGER);")
---
@@ -1102,11 +1099,8 @@ box.execute("SELECT CAST(-1.5 AS UNSIGNED);")
...
box.execute("SELECT CAST(true AS UNSIGNED);")
---
-- metadata:
- - name: COLUMN_1
- type: unsigned
- rows:
- - [1]
+- null
+- 'Type mismatch: can not convert boolean(TRUE) to unsigned'
...
box.execute("SELECT CAST('123' AS UNSIGNED);")
---
--
2.25.1
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