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| author | Amit Langote <amitlan@postgresql.org> | 2024-06-19 15:22:06 +0900 |
|---|---|---|
| committer | Amit Langote <amitlan@postgresql.org> | 2024-06-19 15:22:06 +0900 |
| commit | 0f271e8e8d9c8db0ea86c0d12b3221009b81d8bf (patch) | |
| tree | 4890052933a315ad69089aff7c38fbc532367196 /src/include/utils/jsonpath.h | |
| parent | 5e05a0e9924e97c24be13c75e4ba12c60bd0e4ad (diff) | |
SQL/JSON: Correct jsonpath variable name matching
Previously, GetJsonPathVar() allowed a jsonpath expression to
reference any prefix of a PASSING variable's name. For example, the
following query would incorrectly work:
SELECT JSON_QUERY(context_item, jsonpath '$xy' PASSING val AS xyz);
The fix ensures that the length of the variable name mentioned in a
jsonpath expression matches exactly with the name of the PASSING
variable before comparing the strings using strncmp().
Reported-by: Alvaro Herrera (off-list)
Discussion: https://postgr.es/m/CA+HiwqFGkLWMvELBH6E4SQ45qUHthgcRH6gCJL20OsYDRtFx_w@mail.gmail.com
Diffstat (limited to 'src/include/utils/jsonpath.h')
| -rw-r--r-- | src/include/utils/jsonpath.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/utils/jsonpath.h b/src/include/utils/jsonpath.h index 9d2b8533d54..ee35698d083 100644 --- a/src/include/utils/jsonpath.h +++ b/src/include/utils/jsonpath.h @@ -287,6 +287,7 @@ extern bool jspConvertRegexFlags(uint32 xflags, int *result, typedef struct JsonPathVariable { char *name; + int namelen; /* strlen(name) as cache for GetJsonPathVar() */ Oid typid; int32 typmod; Datum value; |