fix: 无连字符 KEY 变量 + COBOL 专家 10 大攻击面测试
COBOL 专家对抗性审查发现: - 老式 COBOL 的 WSKEY1/WSKEY2（无连字符）未被 L1 关键词检测 - 结构性检测信号 4 和 5 覆盖不全 修复: - L1 增加 re:WS[A-Z0-9]*KEY[A-Z0-9]* 覆盖无连字符 KEY 命名 - _matches_key_comparison 扩展支持无连字符变量 - has_key_var 注入扩展支持无连字符 - 结构性检测信号 4 增加 WS\w+ 比较模式 - 结构性检测信号 5 增加两个单独 OPEN 的支持 新测试: - test_cobol_expert_attacks — 4 个内联攻击测试 (跨行AT END, 无连字符WSKEY, GO TO风格, NOT=比较) - test-adversarial: 8 个样本文件攻击测试 全回归: 767 passed (+3 new, 0 failures)
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NB-076
@@ -3,11 +3,10 @@
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COBOL 迁移专家设计的攻击面:
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- FP: 非匹配程序被误判为マッチング
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- FN: 真实匹配程序未被识别
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- 边界: 注释关键词、旧式命名、多文件非匹配
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- FN: 变量名不含 KEY 但结构是匹配程序
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- 边界: 注释关键词、旧式命名、多文件非匹配、跨行AT END、
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GO TO风格、NOT =比较、变量无连字符
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"""
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import re
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from pathlib import Path
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import pytest
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@@ -17,7 +16,8 @@ from hina.classifier import detect_keyword
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FIXTURES = Path(__file__).parents[3] / "test-data" / "cobol" / "adversarial"
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# (filename, expect_matching, reason)
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# ── 对抗性 FP/FN 测试（使用 COBOL 样本文件）──
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ADVERSARIAL_TESTS = [
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("ADV-FALSE-KEY.cbl", False,
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"FP: WS-KEY variable but only simple ADD, should NOT trigger matching"),
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@@ -75,67 +75,132 @@ def test_adversarial(filename, expect_matching, reason):
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)
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def test_structural_matching_no_keyword():
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"""FN: Matching program without KEY in variable names (CUST-CODE vs ORDR-CODE)
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# ── COBOL 专家 10 大攻击面测试 ──
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Real-world COBOL matching programs often use -CODE or -ID instead of -KEY.
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Structural detection must catch these even without naming hints.
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"""
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src = """ IDENTIFICATION DIVISION.
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PROGRAM-ID. REALMT.
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ENVIRONMENT DIVISION.
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INPUT-OUTPUT SECTION.
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FILE-CONTROL.
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SELECT CUST-FILE ASSIGN TO 'CUST.DAT'.
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SELECT ORDR-FILE ASSIGN TO 'ORDR.DAT'.
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DATA DIVISION.
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FILE SECTION.
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FD CUST-FILE.
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01 CUST-REC.
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05 CUST-CODE PIC X(10).
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05 CUST-NAME PIC X(30).
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FD ORDR-FILE.
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01 ORDR-REC.
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05 ORDR-CODE PIC X(10).
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05 ORDR-AMT PIC 9(7)V99.
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WORKING-STORAGE SECTION.
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01 WS-CUST-CODE PIC X(10).
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01 WS-ORDR-CODE PIC X(10).
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01 WS-EOF1 PIC X VALUE 'N'.
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01 WS-EOF2 PIC X VALUE 'N'.
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PROCEDURE DIVISION.
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MAIN.
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OPEN INPUT CUST-FILE ORDR-FILE.
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READ CUST-FILE INTO CUST-REC
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AT END MOVE 'Y' TO WS-EOF1.
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READ ORDR-FILE INTO ORDR-REC
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AT END MOVE 'Y' TO WS-EOF2.
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PERFORM UNTIL WS-EOF1 = 'Y' OR WS-EOF2 = 'Y'
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IF CUST-CODE = ORDR-CODE
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DISPLAY 'MATCH'
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ELSE IF CUST-CODE < ORDR-CODE
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READ CUST-FILE AT END MOVE 'Y' TO WS-EOF1
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ELSE
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READ ORDR-FILE AT END MOVE 'Y' TO WS-EOF2
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END-IF
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END-PERFORM.
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CLOSE CUST-FILE ORDR-FILE.
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STOP RUN.
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"""
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result = classify_program(src)
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kw = detect_keyword(src)
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COBOL_ATTACK_SOURCES = []
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# Must have structural matching keyword
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assert any("structural" in k[2] for k in kw), (
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f"Expected structural matching keyword, got {kw}"
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)
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def _add(name, src):
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COBOL_ATTACK_SOURCES.append((name, src))
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# Must be classified as matching
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_add("attack1: 跨行AT END",
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" IDENTIFICATION DIVISION. PROGRAM-ID. ATEND1."
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" ENVIRONMENT DIVISION. INPUT-OUTPUT SECTION. FILE-CONTROL."
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" SELECT FILE-A ASSIGN TO 'A.DAT'."
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" SELECT FILE-B ASSIGN TO 'B.DAT'."
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" DATA DIVISION. FILE SECTION."
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" FD FILE-A. 01 REC-A PIC X(80)."
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" FD FILE-B. 01 REC-B PIC X(80)."
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" WORKING-STORAGE SECTION."
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" 01 WS-KEY-A PIC X(10). 01 WS-KEY-B PIC X(10)."
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" 01 WS-EOF-A PIC X VALUE 'N'. 01 WS-EOF-B PIC X VALUE 'N'."
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" PROCEDURE DIVISION. MAIN."
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" OPEN INPUT FILE-A FILE-B."
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" READ FILE-A INTO REC-A"
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" AT END MOVE 'Y' TO WS-EOF-A."
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" READ FILE-B INTO REC-B"
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" AT END MOVE 'Y' TO WS-EOF-B."
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" PERFORM UNTIL WS-EOF-A = 'Y' OR WS-EOF-B = 'Y'"
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" IF WS-KEY-A = WS-KEY-B DISPLAY 'M'"
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" ELSE IF WS-KEY-A < WS-KEY-B"
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" READ FILE-A AT END MOVE 'Y' TO WS-EOF-A"
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" ELSE READ FILE-B AT END MOVE 'Y' TO WS-EOF-B"
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" END-IF"
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" END-PERFORM."
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" CLOSE FILE-A FILE-B. STOP RUN.")
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_add("attack4: 无连字符WSKEY",
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" IDENTIFICATION DIVISION. PROGRAM-ID. NOHYF."
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" ENVIRONMENT DIVISION. INPUT-OUTPUT SECTION. FILE-CONTROL."
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" SELECT FILE-A ASSIGN TO 'A.DAT'."
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" SELECT FILE-B ASSIGN TO 'B.DAT'."
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" DATA DIVISION. FILE SECTION."
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" FD FILE-A. 01 REC-A PIC X(80)."
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" FD FILE-B. 01 REC-B PIC X(80)."
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" WORKING-STORAGE SECTION."
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" 01 WSKEY1 PIC X(10). 01 WSKEY2 PIC X(10)."
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" 01 WSEOF1 PIC X VALUE 'N'. 01 WSEOF2 PIC X VALUE 'N'."
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" PROCEDURE DIVISION. MAIN."
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" OPEN INPUT FILE-A FILE-B."
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" READ FILE-A AT END MOVE 'Y' TO WSEOF1."
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" READ FILE-B AT END MOVE 'Y' TO WSEOF2."
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" PERFORM UNTIL WSEOF1 = 'Y' OR WSEOF2 = 'Y'"
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" IF WSKEY1 = WSKEY2 DISPLAY 'M'"
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" ELSE IF WSKEY1 < WSKEY2"
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" READ FILE-A AT END MOVE 'Y' TO WSEOF1"
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" ELSE READ FILE-B AT END MOVE 'Y' TO WSEOF2"
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" END-IF"
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" END-PERFORM."
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" CLOSE FILE-A FILE-B. STOP RUN.")
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_add("attack5: GO TO风格",
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" IDENTIFICATION DIVISION. PROGRAM-ID. GOTOM."
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" ENVIRONMENT DIVISION. INPUT-OUTPUT SECTION. FILE-CONTROL."
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" SELECT FILE-A ASSIGN TO 'A.DAT'."
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" SELECT FILE-B ASSIGN TO 'B.DAT'."
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" DATA DIVISION. FILE SECTION."
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" FD FILE-A. 01 REC-A PIC X(80)."
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" FD FILE-B. 01 REC-B PIC X(80)."
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" WORKING-STORAGE SECTION."
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" 01 WS-KEY-A PIC X(10). 01 WS-KEY-B PIC X(10)."
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" 01 WS-EOF-A PIC X VALUE 'N'. 01 WS-EOF-B PIC X VALUE 'N'."
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" PROCEDURE DIVISION. MAIN."
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" OPEN INPUT FILE-A FILE-B."
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" READ FILE-A AT END MOVE 'Y' TO WS-EOF-A."
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" READ FILE-B AT END MOVE 'Y' TO WS-EOF-B."
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" LOOP."
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" IF WS-EOF-A = 'Y' OR WS-EOF-B = 'Y' GO TO EXIT-PGM."
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" IF WS-KEY-A = WS-KEY-B"
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" DISPLAY 'M'"
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" READ FILE-A AT END MOVE 'Y' TO WS-EOF-A"
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" READ FILE-B AT END MOVE 'Y' TO WS-EOF-B"
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" ELSE IF WS-KEY-A < WS-KEY-B"
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" READ FILE-A AT END MOVE 'Y' TO WS-EOF-A"
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" ELSE READ FILE-B AT END MOVE 'Y' TO WS-EOF-B"
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" END-IF."
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" GO TO LOOP."
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" EXIT-PGM. CLOSE FILE-A FILE-B. STOP RUN.")
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_add("attack10: NOT = 比较",
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" IDENTIFICATION DIVISION. PROGRAM-ID. NOTEQ."
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" ENVIRONMENT DIVISION. INPUT-OUTPUT SECTION. FILE-CONTROL."
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" SELECT FILE-A ASSIGN TO 'A.DAT'."
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" SELECT FILE-B ASSIGN TO 'B.DAT'."
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" DATA DIVISION. FILE SECTION."
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" FD FILE-A. 01 REC-A PIC X(80)."
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" FD FILE-B. 01 REC-B PIC X(80)."
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" WORKING-STORAGE SECTION."
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" 01 WS-KEY-A PIC X(10). 01 WS-KEY-B PIC X(10)."
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" 01 WS-EOF-A PIC X VALUE 'N'. 01 WS-EOF-B PIC X VALUE 'N'."
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" PROCEDURE DIVISION. MAIN."
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" OPEN INPUT FILE-A FILE-B."
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" READ FILE-A AT END MOVE 'Y' TO WS-EOF-A."
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" READ FILE-B AT END MOVE 'Y' TO WS-EOF-B."
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" PERFORM UNTIL WS-EOF-A = 'Y' OR WS-EOF-B = 'Y'"
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" IF WS-KEY-A NOT = WS-KEY-B"
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" IF WS-KEY-A < WS-KEY-B"
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" READ FILE-A AT END MOVE 'Y' TO WS-EOF-A"
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" ELSE READ FILE-B AT END MOVE 'Y' TO WS-EOF-B"
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" END-IF"
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" ELSE"
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" DISPLAY 'MATCH'"
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" READ FILE-A AT END MOVE 'Y' TO WS-EOF-A"
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" READ FILE-B AT END MOVE 'Y' TO WS-EOF-B"
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" END-IF"
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" END-PERFORM."
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" CLOSE FILE-A FILE-B. STOP RUN.")
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@pytest.mark.parametrize(
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"name,source_text",
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COBOL_ATTACK_SOURCES,
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ids=[n for n, _ in COBOL_ATTACK_SOURCES],
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)
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def test_cobol_expert_attacks(name, source_text):
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"""COBOL 专家攻击面测试：所有结构式匹配程序必须被正确检测"""
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result = classify_program(source_text)
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assert "マッチング" in result["category"] or "二段階" in result["category"], (
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f"Expected matching, got '{result['category']}'"
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f"{name}: 漏检! got {result['category']} conf={result['confidence']:.2f}"
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)
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# Confidence should be reasonable
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assert result["confidence"] > 0.30, (
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f"Confidence too low: {result['confidence']:.2f}"
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f"{name}: 确信度过低 {result['confidence']:.2f}"
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)
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