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Greptile Summary
Confidence Score: 2/5
Important Files Changed
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8 files reviewed, 5 comments
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fangpenlin
suggested changes
Nov 19, 2025
Comment on lines
+38
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+46
| if r.config.ReadOnlyMode { | ||
| isReadOnly, err := r.handleReadOnlyCheck(query) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if !isReadOnly { | ||
| return nil, mysql.NewError(mysql.ER_OPTION_PREVENTS_STATEMENT, "Operation not allowed by policy in read-only mode.") | ||
| } | ||
| } |
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Seems like repeating, extracted into some thing like
err = checkReadOnly(...)
if err != nil {
return ...
}instead?
Comment on lines
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+174
| dialect := sqi.DialectMySQL | ||
| strict := false | ||
| options := sqi.IdentifyOptions{ | ||
| Dialect: &dialect, | ||
| Strict: &strict, | ||
| } | ||
|
|
||
| identifiedQueries, err := sqi.Identify(query, options) | ||
| if err != nil { | ||
| log.Error(). | ||
| Str("sessionID", r.config.SessionID). | ||
| Str("query", query). | ||
| Err(err). | ||
| Msg("Failed to identify query; blocking in read-only mode.") | ||
| return false, err | ||
| } | ||
|
|
||
| // verify that every statement in the query is read-only | ||
| for _, identifiedQuery := range identifiedQueries { | ||
| if identifiedQuery.ExecutionType != sqi.ExecutionListing && identifiedQuery.ExecutionType != sqi.ExecutionInformation { | ||
| log.Warn(). | ||
| Str("sessionID", r.config.SessionID). | ||
| Str("query", query). | ||
| Str("executionType", string(identifiedQuery.ExecutionType)). |
Contributor
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There should be automatic unit test tests covering different SQL statements trying to see if it can parse them correctly and detect write syntax. One test case for mysql and another for postgresql.
Comment on lines
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| for _, identifiedQuery := range identifiedQueries { | ||
| if identifiedQuery.ExecutionType != sqi.ExecutionListing && identifiedQuery.ExecutionType != sqi.ExecutionInformation { | ||
| log.Warn(). | ||
| Str("sessionID", p.config.SessionID). | ||
| Str("query", queryContent). | ||
| Str("executionType", string(identifiedQuery.ExecutionType)). | ||
| Msg("Write query blocked in read-only mode.") | ||
|
|
||
| errorResponse := &pgproto3.ErrorResponse{ | ||
| Severity: "ERROR", | ||
| Code: "42803", // insufficient_privilege | ||
| Message: "Operation not allowed by policy in read-only mode.", | ||
| } | ||
| clientBackend.Send(errorResponse) | ||
| _ = clientBackend.Flush() | ||
| errChan <- fmt.Errorf("write query blocked: %s (type: %s)", queryContent, identifiedQuery.ExecutionType) | ||
| return false | ||
| } | ||
| } |
Comment on lines
+73
to
+81
| if r.config.ReadOnlyMode { | ||
| isReadOnly, err := r.handleReadOnlyCheck(query) | ||
| if err != nil { | ||
| return 0, 0, nil, err | ||
| } | ||
| if !isReadOnly { | ||
| return 0, 0, nil, mysql.NewError(mysql.ER_OPTION_PREVENTS_STATEMENT, "Operation not allowed by policy in read-only mode.") | ||
| } | ||
| } |
Comment on lines
+91
to
+99
| if r.config.ReadOnlyMode { | ||
| isReadOnly, err := r.handleReadOnlyCheck(query) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if !isReadOnly { | ||
| return nil, mysql.NewError(mysql.ER_OPTION_PREVENTS_STATEMENT, "Operation not allowed by policy in read-only mode.") | ||
| } | ||
| } |
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Read-only toggle for PAM DB