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introduce cannonical representatives of RegExpTerms to decrease the number of InputSymbols in the NFA

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Erik Krogh Kristensen
2020-12-17 17:36:44 +01:00
parent 34dda6d38b
commit 7ce91e9146
2 changed files with 52 additions and 17 deletions
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6
javascript/ql/test/query-tests/Performance/ReDoS/ReDoS.expected
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@@ -15,7 +15,7 @@
| regexplib/email.js:25:106:25:117 | [a-zA-Z0-9]+ | This part of the regular expression may cause exponential backtracking on strings starting with '0@0' and containing many repetitions of '0'. |
| regexplib/email.js:25:212:25:223 | [a-zA-Z0-9]+ | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '0'. |
| regexplib/email.js:25:251:25:262 | [a-zA-Z0-9]+ | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '0'. |
| regexplib/email.js:32:10:32:25 | (?:\\w[\\.\\-\\+]?)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '0'. |
| regexplib/email.js:32:10:32:25 | (?:\\w[\\.\\-\\+]?)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of 'a'. |
| regexplib/email.js:33:16:33:22 | [-.\\w]* | This part of the regular expression may cause exponential backtracking on strings starting with '0' and containing many repetitions of '0'. |
| regexplib/email.js:33:38:33:51 | ([0-9a-zA-Z])+ | This part of the regular expression may cause exponential backtracking on strings starting with '0@' and containing many repetitions of '00.'. |
| regexplib/email.js:33:53:33:58 | [-\\w]* | This part of the regular expression may cause exponential backtracking on strings starting with '0@0' and containing many repetitions of '0'. |
@@ -41,7 +41,7 @@
| regexplib/strings.js:57:17:57:19 | \\d+ | This part of the regular expression may cause exponential backtracking on strings starting with '?se[' and containing many repetitions of '9'. |
| regexplib/strings.js:81:17:81:19 | \\d+ | This part of the regular expression may cause exponential backtracking on strings starting with '?se[' and containing many repetitions of '9'. |
| regexplib/uri.js:3:128:3:129 | .* | This part of the regular expression may cause exponential backtracking on strings starting with 'ftp:// /' and containing many repetitions of '/'. |
| regexplib/uri.js:3:200:3:215 | (?:\\&?\\w+\\=\\w+)* | This part of the regular expression may cause exponential backtracking on strings starting with 'ftp:// a="' and containing many repetitions of '0=0'. |
| regexplib/uri.js:3:200:3:215 | (?:\\&?\\w+\\=\\w+)* | This part of the regular expression may cause exponential backtracking on strings starting with 'ftp:// a="' and containing many repetitions of 'a=0'. |
| regexplib/uri.js:5:42:5:43 | .* | This part of the regular expression may cause exponential backtracking on strings starting with 'A:\\\\a' and containing many repetitions of '\\\\a'. |
| regexplib/uri.js:17:42:17:43 | .* | This part of the regular expression may cause exponential backtracking on strings starting with 'A:\\\\a' and containing many repetitions of '\\\\a'. |
| regexplib/uri.js:38:35:38:40 | [a-z]+ | This part of the regular expression may cause exponential backtracking on strings starting with 'a.' and containing many repetitions of 'a'. |
@@ -109,7 +109,7 @@
| tst.js:227:20:227:20 | b | This part of the regular expression may cause exponential backtracking on strings starting with 'W' and containing many repetitions of 'bW'. |
| tst.js:239:16:239:17 | ab | This part of the regular expression may cause exponential backtracking on strings starting with 'a' and containing many repetitions of 'ab'. |
| tst.js:245:15:245:21 | [\\n\\s]+ | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '\\n'. |
| tst.js:254:87:254:89 | \\w* | This part of the regular expression may cause exponential backtracking on strings starting with 'foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz' and containing many repetitions of '0foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz'. |
| tst.js:254:87:254:89 | \\w* | This part of the regular expression may cause exponential backtracking on strings starting with 'foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz' and containing many repetitions of 'afoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz'. |
| tst.js:257:14:257:116 | (.thisisagoddamnlongstringforstresstestingthequery\|\\sthisisagoddamnlongstringforstresstestingthequery)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of ' thisisagoddamnlongstringforstresstestingthequery'. |
| tst.js:260:14:260:77 | (thisisagoddamnlongstringforstresstestingthequery\|this\\w+query)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of 'thisisagoddamnlongstringforstresstestingthequery'. |
| tst.js:272:21:272:22 | b+ | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of 'b'. |