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-rw-r--r--src/regex/test_regex_eval_api.c364
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diff --git a/src/regex/test_regex_eval_api.c b/src/regex/test_regex_eval_api.c
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1/*
2 This file is part of GNUnet
3 Copyright (C) 2012 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17*/
18/**
19 * @file regex/test_regex_eval_api.c
20 * @brief test for regex.c
21 * @author Maximilian Szengel
22 */
23#include <regex.h>
24#include <time.h>
25#include "platform.h"
26#include "regex_internal_lib.h"
27#include "regex_test_lib.h"
28#include "regex_internal.h"
29
30enum Match_Result
31{
32 match = 0,
33 nomatch = 1
34};
35
36struct Regex_String_Pair
37{
38 char *regex;
39 int string_count;
40 char *strings[20];
41 enum Match_Result expected_results[20];
42};
43
44
45/**
46 * Random regex test. Generate a random regex as well as 'str_count' strings to
47 * match it against. Will match using GNUNET_REGEX implementation and compare
48 * the result to glibc regex result. 'rx_length' has to be smaller then
49 * 'max_str_len'.
50 *
51 * @param rx_length length of the regular expression.
52 * @param max_str_len maximum length of the random strings.
53 * @param str_count number of generated random strings.
54 *
55 * @return 0 on success, non 0 otherwise.
56 */
57int
58test_random (unsigned int rx_length, unsigned int max_str_len,
59 unsigned int str_count)
60{
61 unsigned int i;
62 char *rand_rx;
63 char *matching_str;
64 int eval;
65 int eval_check;
66 int eval_canonical;
67 int eval_canonical_check;
68 struct REGEX_INTERNAL_Automaton *dfa;
69 regex_t rx;
70 regmatch_t matchptr[1];
71 char error[200];
72 int result;
73 char *canonical_regex = NULL;
74
75 /* At least one string is needed for matching */
76 GNUNET_assert (str_count > 0);
77 /* The string should be at least as long as the regex itself */
78 GNUNET_assert (max_str_len >= rx_length);
79
80 /* Generate random regex and a string that matches the regex */
81 matching_str = GNUNET_malloc (rx_length + 1);
82 rand_rx = REGEX_TEST_generate_random_regex (rx_length, matching_str);
83
84 /* Now match */
85 result = 0;
86 for (i = 0; i < str_count; i++)
87 {
88 if (0 < i)
89 {
90 matching_str = REGEX_TEST_generate_random_string (max_str_len);
91 }
92
93 /* Match string using DFA */
94 dfa = REGEX_INTERNAL_construct_dfa (rand_rx, strlen (rand_rx), 0);
95 if (NULL == dfa)
96 {
97 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Constructing DFA failed\n");
98 goto error;
99 }
100
101 eval = REGEX_INTERNAL_eval (dfa, matching_str);
102 /* save the canonical regex for later comparison */
103 canonical_regex = GNUNET_strdup (REGEX_INTERNAL_get_canonical_regex (dfa));
104 REGEX_INTERNAL_automaton_destroy (dfa);
105
106 /* Match string using glibc regex */
107 if (0 != regcomp (&rx, rand_rx, REG_EXTENDED))
108 {
109 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
110 "Could not compile regex using regcomp: %s\n", rand_rx);
111 goto error;
112 }
113
114 eval_check = regexec (&rx, matching_str, 1, matchptr, 0);
115 regfree (&rx);
116
117 /* We only want to match the whole string, because that's what our DFA does,
118 * too. */
119 if (eval_check == 0 &&
120 (matchptr[0].rm_so != 0 || matchptr[0].rm_eo != strlen (matching_str)))
121 eval_check = 1;
122
123 /* Match canonical regex */
124 dfa =
125 REGEX_INTERNAL_construct_dfa (canonical_regex, strlen (canonical_regex),
126 0);
127 if (NULL == dfa)
128 {
129 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Constructing DFA failed\n");
130 goto error;
131 }
132
133 eval_canonical = REGEX_INTERNAL_eval (dfa, matching_str);
134 REGEX_INTERNAL_automaton_destroy (dfa);
135
136 if (0 != regcomp (&rx, canonical_regex, REG_EXTENDED))
137 {
138 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
139 "Could not compile regex using regcomp: %s\n",
140 canonical_regex);
141 goto error;
142 }
143
144 eval_canonical_check = regexec (&rx, matching_str, 1, matchptr, 0);
145 regfree (&rx);
146
147 /* We only want to match the whole string, because that's what our DFA does,
148 * too. */
149 if (eval_canonical_check == 0 &&
150 (matchptr[0].rm_so != 0 || matchptr[0].rm_eo != strlen (matching_str)))
151 eval_canonical_check = 1;
152
153 /* compare results */
154 if (eval_check != eval || eval_canonical != eval_canonical_check)
155 {
156 regerror (eval_check, &rx, error, sizeof error);
157 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Unexpected result:\nregex: %s\ncanonical_regex: %s\n\
158 string: %s\ngnunet regex: %i\nglibc regex: %i\n\
159 canonical regex: %i\ncanonical regex glibc: %i\n\
160 glibc error: %s\n\n", rand_rx, canonical_regex, matching_str,
161 eval, eval_check, eval_canonical, eval_canonical_check, error);
162 result += 1;
163 }
164 GNUNET_free (canonical_regex);
165 GNUNET_free (matching_str);
166 canonical_regex = NULL;
167 matching_str = NULL;
168 }
169
170 GNUNET_free (rand_rx);
171
172 return result;
173
174error:
175 GNUNET_free_non_null (matching_str);
176 GNUNET_free_non_null (rand_rx);
177 GNUNET_free_non_null (canonical_regex);
178 return -1;
179}
180
181/**
182 * Automaton test that compares the result of matching regular expression 'rx'
183 * with the strings and expected results in 'rxstr' with the result of matching
184 * the same strings with glibc regex.
185 *
186 * @param a automaton.
187 * @param rx compiled glibc regex.
188 * @param rxstr regular expression and strings with expected results to
189 * match against.
190 *
191 * @return 0 on successfull, non 0 otherwise
192 */
193int
194test_automaton (struct REGEX_INTERNAL_Automaton *a, regex_t * rx,
195 struct Regex_String_Pair *rxstr)
196{
197 int result;
198 int eval;
199 int eval_check;
200 char error[200];
201 regmatch_t matchptr[1];
202 int i;
203
204 if (NULL == a)
205 {
206 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Automaton was NULL\n");
207 return 1;
208 }
209
210 result = 0;
211
212 for (i = 0; i < rxstr->string_count; i++)
213 {
214 eval = REGEX_INTERNAL_eval (a, rxstr->strings[i]);
215 eval_check = regexec (rx, rxstr->strings[i], 1, matchptr, 0);
216
217 /* We only want to match the whole string, because that's what our DFA does,
218 * too. */
219 if (eval_check == 0 &&
220 (matchptr[0].rm_so != 0 ||
221 matchptr[0].rm_eo != strlen (rxstr->strings[i])))
222 eval_check = 1;
223
224 if ((rxstr->expected_results[i] == match && (0 != eval || 0 != eval_check))
225 || (rxstr->expected_results[i] == nomatch &&
226 (0 == eval || 0 == eval_check)))
227 {
228 result = 1;
229 regerror (eval_check, rx, error, sizeof error);
230 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
231 "Unexpected result:\nregex: %s\ncanonical_regex: %s\n"
232 "string: %s\nexpected result: %i\n"
233 "gnunet regex: %i\nglibc regex: %i\nglibc error: %s\n"
234 "rm_so: %i\nrm_eo: %i\n\n", rxstr->regex,
235 REGEX_INTERNAL_get_canonical_regex (a), rxstr->strings[i],
236 rxstr->expected_results[i], eval, eval_check, error,
237 matchptr[0].rm_so, matchptr[0].rm_eo);
238 }
239 }
240 return result;
241}
242
243int
244main (int argc, char *argv[])
245{
246 GNUNET_log_setup ("test-regex", "WARNING", NULL);
247
248 struct REGEX_INTERNAL_Automaton *a;
249 regex_t rx;
250 int i;
251 int check_nfa;
252 int check_dfa;
253 int check_rand;
254 char *check_proof;
255
256 struct Regex_String_Pair rxstr[19] = {
257 {"ab?(abcd)?", 5,
258 {"ababcd", "abab", "aabcd", "a", "abb"},
259 {match, nomatch, match, match, nomatch}},
260 {"ab(c|d)+c*(a(b|c)d)+", 5,
261 {"abcdcdcdcdddddabd", "abcd",
262 "abcddddddccccccccccccccccccccccccabdacdabd",
263 "abccccca", "abcdcdcdccdabdabd"},
264 {match, nomatch, match, nomatch, match}},
265 {"ab+c*(a(bx|c)d)+", 5,
266 {"abcdcdcdcdddddabd", "abcd",
267 "abcddddddccccccccccccccccccccccccabdacdabd",
268 "abccccca", "abcdcdcdccdabdabd"},
269 {nomatch, nomatch, nomatch, nomatch, nomatch}},
270 {"a+X*y+c|p|R|Z*K*y*R+w|Y*6+n+h*k*w+V*F|W*B*e*", 1,
271 {"kaXycQepRZKyRwY6nhkwVFWBegNVtLPj39XhJJ6bEifRSZRYZg"},
272 {nomatch}},
273 {"k|a+X*y+c|Q*e|p|R|Z*K*y*R+w|Y*6+n+h*k*w+V*F|W*B*e*g|N+V|t+L|P*j*3*9+X*h*J|J*6|b|E*i*f*R+S|Z|R|Y*Z|g*", 1,
274 {"kaXycQepRZKyRwY6nhkwVFWBegNVtLPj39XhJJ6bEifRSZRYZg"},
275 {nomatch}},
276 {"F?W+m+2*6*c*s|P?U?a|B|y*i+t+A|V|6*C*7*e?Z*n*i|J?5+g?W*V?7*j?p?1|r?B?C+E+3+6*i+W*P?K?0|D+7?y*m+3?g?K?", 1,
277 {"osfjsodfonONONOnosndfsdnfsd"},
278 {nomatch}},
279 {"V|M*o?x*p*d+h+b|E*m?h?Y*E*O?W*W*P+o?Z+H*M|I*q+C*a+5?5*9|b?z|G*y*k?R|p+u|8*h?B+l*H|e|L*O|1|F?v*0?5|C+", 1,
280 {"VMoxpdhbEmhYEOWWPoZHMIqCa559bzGykRpu8hBlHeLO1Fv05C"},
281 {nomatch}},
282 {"(bla)*", 8,
283 {"", "bla", "blabla", "bl", "la", "b", "l", "a"},
284 {match, match, match, nomatch, nomatch, nomatch, nomatch, nomatch}},
285 {"ab(c|d)+c*(a(b|c)+d)+(bla)(bla)*", 8,
286 {"ab", "abcabdbla", "abdcccccccccccabcbccdblablabla", "bl", "la", "b",
287 "l",
288 "a"},
289 {nomatch, match, match, nomatch, nomatch, nomatch, nomatch, nomatch}},
290 {"a|aa*a", 6,
291 {"", "a", "aa", "aaa", "aaaa", "aaaaa"},
292 {nomatch, match, match, match, match, match}},
293 {"ab(c|d)+c*(a(b|c)+d)+(bla)+", 1,
294 {"abcabdblaacdbla"},
295 {nomatch}},
296 {"(ac|b)+", 8,
297 {"b", "bb", "ac", "", "acb", "bacbacac", "acacac", "abc"},
298 {match, match, match, nomatch, match, match, match, nomatch}},
299 {"(ab|c)+", 7,
300 {"", "ab", "c", "abc", "ababcc", "acc", "abac"},
301 {nomatch, match, match, match, match, nomatch, nomatch}},
302 {"((j|2j)K|(j|2j)AK|(j|2j)(D|e|(j|2j)A(D|e))D*K)", 1,
303 {"", "2j2jADK", "j2jADK"},
304 {nomatch, match, match}},
305 {"((j|2j)K|(j|2j)(D|e|((j|2j)j|(j|2j)2j)A(D|e))D*K|(j|2j)AK)", 2,
306 {"", "2j2jjADK", "j2jADK"},
307 {nomatch, match, match}},
308 {"ab(c|d)+c*(a(b|c)d)+", 1,
309 {"abacd"},
310 {nomatch}},
311 {"d|5kl", 1,
312 {"d5kl"},
313 {nomatch}},
314 {"a()b", 1,
315 {"ab"},
316 {match}},
317 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11101010010101100(0|1)*|110111101010010101101(0|1)*|110111101010010101110(0|1)*|110111101010010101111(0|1)*)",
318 2,
319 {"GNVPN-0001-PAD1101111010100101011101010101010101",
320 "GNVPN-0001-PAD11001010100111000101101010101"},
321 {match, match}}
322 };
323
324 check_nfa = 0;
325 check_dfa = 0;
326 check_rand = 0;
327
328 for (i = 0; i < 19; i++)
329 {
330 if (0 != regcomp (&rx, rxstr[i].regex, REG_EXTENDED))
331 {
332 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
333 "Could not compile regex using regcomp()\n");
334 return 1;
335 }
336
337 /* NFA test */
338 a = REGEX_INTERNAL_construct_nfa (rxstr[i].regex, strlen (rxstr[i].regex));
339 check_nfa += test_automaton (a, &rx, &rxstr[i]);
340 REGEX_INTERNAL_automaton_destroy (a);
341
342 /* DFA test */
343 a = REGEX_INTERNAL_construct_dfa (rxstr[i].regex, strlen (rxstr[i].regex), 0);
344 check_dfa += test_automaton (a, &rx, &rxstr[i]);
345 check_proof = GNUNET_strdup (REGEX_INTERNAL_get_canonical_regex (a));
346 REGEX_INTERNAL_automaton_destroy (a);
347
348 a = REGEX_INTERNAL_construct_dfa (check_proof, strlen (check_proof), 0);
349 check_dfa += test_automaton (a, &rx, &rxstr[i]);
350 REGEX_INTERNAL_automaton_destroy (a);
351 if (0 != check_dfa)
352 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "check_proof: %s\n", check_proof);
353 GNUNET_free_non_null (check_proof);
354
355 regfree (&rx);
356 }
357
358 /* Random tests */
359 srand (time (NULL));
360 for (i = 0; i < 20; i++)
361 check_rand += test_random (50, 60, 10);
362
363 return check_nfa + check_dfa + check_rand;
364}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-30 23:00:34 +0000