Fix the isLikeOrGlob() routine in the WHERE clause processing logic so that
it avoids signed/unsigned character comparisons, as that can lead to an incorrect answer if the ESCAPE clause is an invalid UTF8 string. Problem found by OSSFuzz. FossilOrigin-Name: 4195a3f8b5d2c2ec63771890c5aa7b5e2de60b9fa2273652730239b8577ae418
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@ -1,5 +1,5 @@
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C When\sa\scolumn\smust\sbe\sa\sconstant\sdue\sto\sWHERE\sclause\sand\sthe\svalue\sof\sthat\ncolumn\sis\sbeing\scoded\sas\sa\sconstant,\smake\ssure\sthe\saffinity\sis\scorrect.
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D 2018-08-09T18:36:54.837
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C Fix\sthe\sisLikeOrGlob()\sroutine\sin\sthe\sWHERE\sclause\sprocessing\slogic\sso\sthat\nit\savoids\ssigned/unsigned\scharacter\scomparisons,\sas\sthat\scan\slead\sto\san\nincorrect\sanswer\sif\sthe\sESCAPE\sclause\sis\san\sinvalid\sUTF8\sstring.\s\sProblem\nfound\sby\sOSSFuzz.
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D 2018-08-09T21:45:45.368
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F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
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F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
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F Makefile.in 0a3a6c81e6fcb969ff9106e882f0a08547014ba463cb6beca4c4efaecc924ee6
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@ -586,7 +586,7 @@ F src/walker.c ba7225773931760cf60bf22f34d0cce2588df7ce5ce0f215a52eb88234b55ac4
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F src/where.c 155809967fbab889374dedf970ea6561b8fb519fcb165d6ba00776552ecc5cde
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F src/whereInt.h b90ef9b9707ef750eab2a7a080c48fb4900315033274689def32d0cf5a81ebe4
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F src/wherecode.c 2b6cd1b27736cc803060289e04ecf9849976106f4077aa67d1a2c0e3ec420159
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F src/whereexpr.c dc34f0df69418dedb4619f7ad61b7d31f447971223540b957a1b836a62c0ce7b
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F src/whereexpr.c 5a57a974aeadef4443b39bd44594fdf0c884b62a4c72286de880999018df8317
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F src/window.c 4b503da928dace3e845b891381a4d98eeb8c5744313ae3643df8d8d21fdcca65
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F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
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F test/affinity2.test a6d901b436328bd67a79b41bb0ac2663918fe3bd
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@ -955,7 +955,7 @@ F test/fuzzdata1.db 7ee3227bad0e7ccdeb08a9e6822916777073c664
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F test/fuzzdata2.db 128b3feeb78918d075c9b14b48610145a0dd4c8d6f1ca7c2870c7e425f5bf31f
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F test/fuzzdata3.db c6586d3e3cef0fbc18108f9bb649aa77bfc38aba
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F test/fuzzdata4.db b502c7d5498261715812dd8b3c2005bad08b3a26e6489414bd13926cd3e42ed2
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F test/fuzzdata5.db 5e8394be0245224340c26fc592746dd560479b0dcb12d4b43edf2c612848e748
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F test/fuzzdata5.db 3e7a403c9daea38f104410842b3b0761ad3706056df066e71c96399c17adf0a6
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F test/fuzzdata6.db 92a80e4afc172c24f662a10a612d188fb272de4a9bd19e017927c95f737de6d7
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F test/fuzzer1.test 3d4c4b7e547aba5e5511a2991e3e3d07166cfbb8
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F test/fuzzer2.test a85ef814ce071293bce1ad8dffa217cbbaad4c14
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@ -1754,7 +1754,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
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F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
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F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
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F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
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P 60bbca2b9a591800cd8e7b374e62d75b1df0e8fd2d2f71f9b4d5fd044da78be0
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R ef663a1df8c5f6cbefbb7dcd86b83b66
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P 7404ea83168e6c739ebe8fc5d65bbf0265432ccb35b3418bb0381d74362f7527
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R ead5801a282cafcaccf5c2894c10f6f8
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U drh
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Z 68dbd529c4e95246b96ffd22fa0b508e
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Z 01aec118d9103a512fac51295e82f6a7
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@ -1 +1 @@
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7404ea83168e6c739ebe8fc5d65bbf0265432ccb35b3418bb0381d74362f7527
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4195a3f8b5d2c2ec63771890c5aa7b5e2de60b9fa2273652730239b8577ae418
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@ -194,18 +194,18 @@ static int isLikeOrGlob(
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int *pisComplete, /* True if the only wildcard is % in the last character */
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int *pnoCase /* True if uppercase is equivalent to lowercase */
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){
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const u8 *z = 0; /* String on RHS of LIKE operator */
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const u8 *z = 0; /* String on RHS of LIKE operator */
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Expr *pRight, *pLeft; /* Right and left size of LIKE operator */
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ExprList *pList; /* List of operands to the LIKE operator */
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int c; /* One character in z[] */
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u8 c; /* One character in z[] */
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int cnt; /* Number of non-wildcard prefix characters */
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char wc[4]; /* Wildcard characters */
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u8 wc[4]; /* Wildcard characters */
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sqlite3 *db = pParse->db; /* Database connection */
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sqlite3_value *pVal = 0;
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int op; /* Opcode of pRight */
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int rc; /* Result code to return */
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if( !sqlite3IsLikeFunction(db, pExpr, pnoCase, wc) ){
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if( !sqlite3IsLikeFunction(db, pExpr, pnoCase, (char*)wc) ){
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return 0;
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}
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#ifdef SQLITE_EBCDIC
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