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|
/*
This file is part of GNUnet
Copyright (C) 2012 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
*/
/**
* @file regex/test_regex_eval_api.c
* @brief test for regex.c
* @author Maximilian Szengel
*/
#include <regex.h>
#include <time.h>
#include "platform.h"
#include "regex_internal_lib.h"
#include "regex_test_lib.h"
#include "regex_internal.h"
enum Match_Result
{
match = 0,
nomatch = 1
};
struct Regex_String_Pair
{
char *regex;
int string_count;
char *strings[20];
enum Match_Result expected_results[20];
};
/**
* Random regex test. Generate a random regex as well as 'str_count' strings to
* match it against. Will match using GNUNET_REGEX implementation and compare
* the result to glibc regex result. 'rx_length' has to be smaller then
* 'max_str_len'.
*
* @param rx_length length of the regular expression.
* @param max_str_len maximum length of the random strings.
* @param str_count number of generated random strings.
*
* @return 0 on success, non 0 otherwise.
*/
int
test_random (unsigned int rx_length, unsigned int max_str_len,
unsigned int str_count)
{
unsigned int i;
char *rand_rx;
char *matching_str;
int eval;
int eval_check;
int eval_canonical;
int eval_canonical_check;
struct REGEX_INTERNAL_Automaton *dfa;
regex_t rx;
regmatch_t matchptr[1];
char error[200];
int result;
char *canonical_regex = NULL;
/* At least one string is needed for matching */
GNUNET_assert (str_count > 0);
/* The string should be at least as long as the regex itself */
GNUNET_assert (max_str_len >= rx_length);
/* Generate random regex and a string that matches the regex */
matching_str = GNUNET_malloc (rx_length + 1);
rand_rx = REGEX_TEST_generate_random_regex (rx_length, matching_str);
/* Now match */
result = 0;
for (i = 0; i < str_count; i++)
{
if (0 < i)
{
matching_str = REGEX_TEST_generate_random_string (max_str_len);
}
/* Match string using DFA */
dfa = REGEX_INTERNAL_construct_dfa (rand_rx, strlen (rand_rx), 0);
if (NULL == dfa)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Constructing DFA failed\n");
goto error;
}
eval = REGEX_INTERNAL_eval (dfa, matching_str);
/* save the canonical regex for later comparison */
canonical_regex = GNUNET_strdup (REGEX_INTERNAL_get_canonical_regex (dfa));
REGEX_INTERNAL_automaton_destroy (dfa);
/* Match string using glibc regex */
if (0 != regcomp (&rx, rand_rx, REG_EXTENDED))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not compile regex using regcomp: %s\n", rand_rx);
goto error;
}
eval_check = regexec (&rx, matching_str, 1, matchptr, 0);
regfree (&rx);
/* We only want to match the whole string, because that's what our DFA does,
* too. */
if (eval_check == 0 &&
(matchptr[0].rm_so != 0 || matchptr[0].rm_eo != strlen (matching_str)))
eval_check = 1;
/* Match canonical regex */
dfa =
REGEX_INTERNAL_construct_dfa (canonical_regex, strlen (canonical_regex),
0);
if (NULL == dfa)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Constructing DFA failed\n");
goto error;
}
eval_canonical = REGEX_INTERNAL_eval (dfa, matching_str);
REGEX_INTERNAL_automaton_destroy (dfa);
if (0 != regcomp (&rx, canonical_regex, REG_EXTENDED))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not compile regex using regcomp: %s\n",
canonical_regex);
goto error;
}
eval_canonical_check = regexec (&rx, matching_str, 1, matchptr, 0);
regfree (&rx);
/* We only want to match the whole string, because that's what our DFA does,
* too. */
if (eval_canonical_check == 0 &&
(matchptr[0].rm_so != 0 || matchptr[0].rm_eo != strlen (matching_str)))
eval_canonical_check = 1;
/* compare results */
if (eval_check != eval || eval_canonical != eval_canonical_check)
{
regerror (eval_check, &rx, error, sizeof error);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Unexpected result:\nregex: %s\ncanonical_regex: %s\n\
string: %s\ngnunet regex: %i\nglibc regex: %i\n\
canonical regex: %i\ncanonical regex glibc: %i\n\
glibc error: %s\n\n", rand_rx, canonical_regex, matching_str,
eval, eval_check, eval_canonical, eval_canonical_check, error);
result += 1;
}
GNUNET_free (canonical_regex);
GNUNET_free (matching_str);
canonical_regex = NULL;
matching_str = NULL;
}
GNUNET_free (rand_rx);
return result;
error:
GNUNET_free_non_null (matching_str);
GNUNET_free_non_null (rand_rx);
GNUNET_free_non_null (canonical_regex);
return -1;
}
/**
* Automaton test that compares the result of matching regular expression 'rx'
* with the strings and expected results in 'rxstr' with the result of matching
* the same strings with glibc regex.
*
* @param a automaton.
* @param rx compiled glibc regex.
* @param rxstr regular expression and strings with expected results to
* match against.
*
* @return 0 on successfull, non 0 otherwise
*/
int
test_automaton (struct REGEX_INTERNAL_Automaton *a, regex_t * rx,
struct Regex_String_Pair *rxstr)
{
int result;
int eval;
int eval_check;
char error[200];
regmatch_t matchptr[1];
int i;
if (NULL == a)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Automaton was NULL\n");
return 1;
}
result = 0;
for (i = 0; i < rxstr->string_count; i++)
{
eval = REGEX_INTERNAL_eval (a, rxstr->strings[i]);
eval_check = regexec (rx, rxstr->strings[i], 1, matchptr, 0);
/* We only want to match the whole string, because that's what our DFA does,
* too. */
if (eval_check == 0 &&
(matchptr[0].rm_so != 0 ||
matchptr[0].rm_eo != strlen (rxstr->strings[i])))
eval_check = 1;
if ((rxstr->expected_results[i] == match && (0 != eval || 0 != eval_check))
|| (rxstr->expected_results[i] == nomatch &&
(0 == eval || 0 == eval_check)))
{
result = 1;
regerror (eval_check, rx, error, sizeof error);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected result:\nregex: %s\ncanonical_regex: %s\n"
"string: %s\nexpected result: %i\n"
"gnunet regex: %i\nglibc regex: %i\nglibc error: %s\n"
"rm_so: %i\nrm_eo: %i\n\n", rxstr->regex,
REGEX_INTERNAL_get_canonical_regex (a), rxstr->strings[i],
rxstr->expected_results[i], eval, eval_check, error,
matchptr[0].rm_so, matchptr[0].rm_eo);
}
}
return result;
}
int
main (int argc, char *argv[])
{
GNUNET_log_setup ("test-regex", "WARNING", NULL);
struct REGEX_INTERNAL_Automaton *a;
regex_t rx;
int i;
int check_nfa;
int check_dfa;
int check_rand;
char *check_proof;
struct Regex_String_Pair rxstr[19] = {
{"ab?(abcd)?", 5,
{"ababcd", "abab", "aabcd", "a", "abb"},
{match, nomatch, match, match, nomatch}},
{"ab(c|d)+c*(a(b|c)d)+", 5,
{"abcdcdcdcdddddabd", "abcd",
"abcddddddccccccccccccccccccccccccabdacdabd",
"abccccca", "abcdcdcdccdabdabd"},
{match, nomatch, match, nomatch, match}},
{"ab+c*(a(bx|c)d)+", 5,
{"abcdcdcdcdddddabd", "abcd",
"abcddddddccccccccccccccccccccccccabdacdabd",
"abccccca", "abcdcdcdccdabdabd"},
{nomatch, nomatch, nomatch, nomatch, nomatch}},
{"a+X*y+c|p|R|Z*K*y*R+w|Y*6+n+h*k*w+V*F|W*B*e*", 1,
{"kaXycQepRZKyRwY6nhkwVFWBegNVtLPj39XhJJ6bEifRSZRYZg"},
{nomatch}},
{"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,
{"kaXycQepRZKyRwY6nhkwVFWBegNVtLPj39XhJJ6bEifRSZRYZg"},
{nomatch}},
{"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,
{"osfjsodfonONONOnosndfsdnfsd"},
{nomatch}},
{"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,
{"VMoxpdhbEmhYEOWWPoZHMIqCa559bzGykRpu8hBlHeLO1Fv05C"},
{nomatch}},
{"(bla)*", 8,
{"", "bla", "blabla", "bl", "la", "b", "l", "a"},
{match, match, match, nomatch, nomatch, nomatch, nomatch, nomatch}},
{"ab(c|d)+c*(a(b|c)+d)+(bla)(bla)*", 8,
{"ab", "abcabdbla", "abdcccccccccccabcbccdblablabla", "bl", "la", "b",
"l",
"a"},
{nomatch, match, match, nomatch, nomatch, nomatch, nomatch, nomatch}},
{"a|aa*a", 6,
{"", "a", "aa", "aaa", "aaaa", "aaaaa"},
{nomatch, match, match, match, match, match}},
{"ab(c|d)+c*(a(b|c)+d)+(bla)+", 1,
{"abcabdblaacdbla"},
{nomatch}},
{"(ac|b)+", 8,
{"b", "bb", "ac", "", "acb", "bacbacac", "acacac", "abc"},
{match, match, match, nomatch, match, match, match, nomatch}},
{"(ab|c)+", 7,
{"", "ab", "c", "abc", "ababcc", "acc", "abac"},
{nomatch, match, match, match, match, nomatch, nomatch}},
{"((j|2j)K|(j|2j)AK|(j|2j)(D|e|(j|2j)A(D|e))D*K)", 1,
{"", "2j2jADK", "j2jADK"},
{nomatch, match, match}},
{"((j|2j)K|(j|2j)(D|e|((j|2j)j|(j|2j)2j)A(D|e))D*K|(j|2j)AK)", 2,
{"", "2j2jjADK", "j2jADK"},
{nomatch, match, match}},
{"ab(c|d)+c*(a(b|c)d)+", 1,
{"abacd"},
{nomatch}},
{"d|5kl", 1,
{"d5kl"},
{nomatch}},
{"a()b", 1,
{"ab"},
{match}},
{"GNVPN-0001-PAD(001110101001001010(0|1)*|001110101001001010000(0|1)*|001110101001001010001(0|1)*|001110101001001010010(0|1)*|001110101001001010011(0|1)*|001110101001001010100(0|1)*|001110101001001010101(0|1)*|001110101001001010110(0|1)*|001110101001001010111(0|1)*|0011101010110110(0|1)*|001110101011011000000(0|1)*|001110101011011000001(0|1)*|001110101011011000010(0|1)*|001110101011011000011(0|1)*|001110101011011000100(0|1)*|001110101011011000101(0|1)*|001110101011011000110(0|1)*|001110101011011000111(0|1)*|001110101011011001000(0|1)*|001110101011011001001(0|1)*|001110101011011001010(0|1)*|001110101011011001011(0|1)*|001110101011011001100(0|1)*|001110101011011001101(0|1)*|001110101011011001110(0|1)*|001110101011011001111(0|1)*|001110101011011010000(0|1)*|001110101011011010001(0|1)*|001110101011011010010(0|1)*|001110101011011010011(0|1)*|001110101011011010100(0|1)*|001110101011011010101(0|1)*|001110101011011010110(0|1)*|001110101011011010111(0|1)*|001110101011011011000(0|1)*|001110101011011011001(0|1)*|001110101011011011010(0|1)*|001110101011011011011(0|1)*|001110101011011011100(0|1)*|001110101011011011101(0|1)*|001110101011011011110(0|1)*|001110101011011011111(0|1)*|0011101110111101(0|1)*|001110111011110100000(0|1)*|001110111011110100001(0|1)*|001110111011110100010(0|1)*|001110111011110100011(0|1)*|001110111011110100100(0|1)*|001110111011110100101(0|1)*|001110111011110100110(0|1)*|001110111011110100111(0|1)*|001110111011110101000(0|1)*|001110111011110101001(0|1)*|001110111011110101010(0|1)*|001110111011110101011(0|1)*|001110111011110101100(0|1)*|001110111011110101101(0|1)*|001110111011110101110(0|1)*|001110111011110101111(0|1)*|001110111011110110000(0|1)*|001110111011110110001(0|1)*|001110111011110110010(0|1)*|001110111011110110011(0|1)*|001110111011110110100(0|1)*|001110111011110110101(0|1)*|001110111011110110110(0|1)*|001110111011110110111(0|1)*|001110111011110111000(0|1)*|001110111011110111001(0|1)*|001110111011110111010(0|1)*|001110111011110111011(0|1)*|001110111011110111100(0|1)*|001110111011110111101(0|1)*|001110111011110111110(0|1)*|0111010001010110(0|1)*|011101000101011000000(0|1)*|011101000101011000001(0|1)*|011101000101011000010(0|1)*|011101000101011000011(0|1)*|011101000101011000100(0|1)*|011101000101011000101(0|1)*|011101000101011000110(0|1)*|011101000101011000111(0|1)*|011101000101011001000(0|1)*|011101000101011001001(0|1)*|011101000101011001010(0|1)*|011101000101011001011(0|1)*|011101000101011001100(0|1)*|011101000101011001101(0|1)*|011101000101011001110(0|1)*|011101000101011001111(0|1)*|011101000101011010000(0|1)*|011101000101011010001(0|1)*|011101000101011010010(0|1)*|011101000101011010011(0|1)*|011101000101011010100(0|1)*|011101000101011010101(0|1)*|011101000101011010110(0|1)*|011101000101011010111(0|1)*|011101000101011011000(0|1)*|011101000101011011001(0|1)*|011101000101011011010(0|1)*|011101000101011011011(0|1)*|011101000101011011100(0|1)*|011101000101011011101(0|1)*|011101000101011011110(0|1)*|011101000101011011111(0|1)*|0111010001010111(0|1)*|011101000101011100000(0|1)*|011101000101011100001(0|1)*|011101000101011100010(0|1)*|011101000101011100011(0|1)*|011101000101011100100(0|1)*|011101000101011100101(0|1)*|011101000101011100110(0|1)*|011101000101011100111(0|1)*|011101000101011101000(0|1)*|011101000101011101001(0|1)*|011101000101011101010(0|1)*|011101000101011101011(0|1)*|011101000101011101100(0|1)*|011101000101011101101(0|1)*|011101000101011101110(0|1)*|011101000101011101111(0|1)*|011101000101011110000(0|1)*|011101000101011110001(0|1)*|011101000101011110010(0|1)*|011101000101011110011(0|1)*|011101000101011110100(0|1)*|011101000101011110101(0|1)*|011101000101011110110(0|1)*|011101000101011110111(0|1)*|011101000101011111000(0|1)*|011101000101011111001(0|1)*|011101000101011111010(0|1)*|011101000101011111011(0|1)*|011101000101011111100(0|1)*|011101000101011111101(0|1)*|011101000101011111110(0|1)*|011101000101011111111(0|1)*|0111010001011000(0|1)*|011101000101100000000(0|1)*|011101000101100000001(0|1)*|011101000101100000010(0|1)*|011101000101100000011(0|1)*|011101000101100000100(0|1)*|011101000101100000101(0|1)*|011101000101100000110(0|1)*|011101000101100000111(0|1)*|011101000101100001000(0|1)*|011101000101100001001(0|1)*|011101000101100001010(0|1)*|011101000101100001011(0|1)*|011101000101100001100(0|1)*|011101000101100001101(0|1)*|011101000101100001110(0|1)*|011101000101100001111(0|1)*|011101000101100010000(0|1)*|011101000101100010001(0|1)*|011101000101100010010(0|1)*|011101000101100010011(0|1)*|011101000101100010100(0|1)*|011101000101100010101(0|1)*|011101000101100010110(0|1)*|011101000101100010111(0|1)*|011101000101100011000(0|1)*|011101000101100011001(0|1)*|011101000101100011010(0|1)*|011101000101100011011(0|1)*|011101000101100011100(0|1)*|011101000101100011101(0|1)*|011101000101100011110(0|1)*|011101000101100011111(0|1)*|01110100010110010(0|1)*|011101000101100100000(0|1)*|011101000101100100001(0|1)*|011101000101100100010(0|1)*|011101000101100100011(0|1)*|011101000101100100100(0|1)*|011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2,
{"GNVPN-0001-PAD1101111010100101011101010101010101",
"GNVPN-0001-PAD11001010100111000101101010101"},
{match, match}}
};
check_nfa = 0;
check_dfa = 0;
check_rand = 0;
for (i = 0; i < 19; i++)
{
if (0 != regcomp (&rx, rxstr[i].regex, REG_EXTENDED))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not compile regex using regcomp()\n");
return 1;
}
/* NFA test */
a = REGEX_INTERNAL_construct_nfa (rxstr[i].regex, strlen (rxstr[i].regex));
check_nfa += test_automaton (a, &rx, &rxstr[i]);
REGEX_INTERNAL_automaton_destroy (a);
/* DFA test */
a = REGEX_INTERNAL_construct_dfa (rxstr[i].regex, strlen (rxstr[i].regex), 0);
check_dfa += test_automaton (a, &rx, &rxstr[i]);
check_proof = GNUNET_strdup (REGEX_INTERNAL_get_canonical_regex (a));
REGEX_INTERNAL_automaton_destroy (a);
a = REGEX_INTERNAL_construct_dfa (check_proof, strlen (check_proof), 0);
check_dfa += test_automaton (a, &rx, &rxstr[i]);
REGEX_INTERNAL_automaton_destroy (a);
if (0 != check_dfa)
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "check_proof: %s\n", check_proof);
GNUNET_free_non_null (check_proof);
regfree (&rx);
}
/* Random tests */
srand (time (NULL));
for (i = 0; i < 20; i++)
check_rand += test_random (50, 60, 10);
return check_nfa + check_dfa + check_rand;
}
|
