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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 General Public License as published
by the Free Software Foundation; either version 3, 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @file regex/test_regex_iterate_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_block_lib.h"
#include "regex_internal.h"
/**
* Regex initial padding.
*/
#define INITIAL_PADDING "PADPADPADPADPADP"
/**
* Set to GNUNET_YES to save a debug graph.
*/
#define REGEX_INTERNAL_ITERATE_SAVE_DEBUG_GRAPH GNUNET_NO
static unsigned int transition_counter;
struct IteratorContext
{
int error;
int should_save_graph;
FILE *graph_filep;
unsigned int string_count;
char *const *strings;
unsigned int match_count;
};
struct RegexStringPair
{
char *regex;
unsigned int string_count;
char *strings[20];
};
static void
key_iterator (void *cls, const struct GNUNET_HashCode *key,
const char *proof,
int accepting, unsigned int num_edges,
const struct REGEX_BLOCK_Edge *edges)
{
unsigned int i;
struct IteratorContext *ctx = cls;
char *out_str;
char *state_id = GNUNET_strdup (GNUNET_h2s (key));
GNUNET_assert (NULL != proof);
if (GNUNET_YES == ctx->should_save_graph)
{
if (GNUNET_YES == accepting)
GNUNET_asprintf (&out_str, "\"%s\" [shape=doublecircle]\n", state_id);
else
GNUNET_asprintf (&out_str, "\"%s\" [shape=circle]\n", state_id);
fwrite (out_str, strlen (out_str), 1, ctx->graph_filep);
GNUNET_free (out_str);
for (i = 0; i < num_edges; i++)
{
transition_counter++;
GNUNET_asprintf (&out_str, "\"%s\" -> \"%s\" [label = \"%s (%s)\"]\n",
state_id, GNUNET_h2s (&edges[i].destination),
edges[i].label, proof);
fwrite (out_str, strlen (out_str), 1, ctx->graph_filep);
GNUNET_free (out_str);
}
}
else
{
for (i = 0; i < num_edges; i++)
transition_counter++;
}
for (i = 0; i < ctx->string_count; i++)
{
if (0 == strcmp (proof, ctx->strings[i]))
ctx->match_count++;
}
if (GNUNET_OK != REGEX_BLOCK_check_proof (proof, strlen (proof), key))
{
ctx->error++;
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Proof check failed: proof: %s key: %s\n", proof, state_id);
}
GNUNET_free (state_id);
}
int
main (int argc, char *argv[])
{
GNUNET_log_setup ("test-regex", "WARNING", NULL);
int error;
struct REGEX_INTERNAL_Automaton *dfa;
unsigned int i;
unsigned int num_transitions;
char *filename = NULL;
struct IteratorContext ctx = { 0, 0, NULL, 0, NULL, 0 };
error = 0;
const struct RegexStringPair rxstr[13] = {
{INITIAL_PADDING "ab(c|d)+c*(a(b|c)+d)+(bla)+", 2,
{INITIAL_PADDING "abcdcdca", INITIAL_PADDING "abcabdbl"}},
{INITIAL_PADDING
"abcdefghixxxxxxxxxxxxxjklmnop*qstoisdjfguisdfguihsdfgbdsuivggsd", 1,
{INITIAL_PADDING "abcdefgh"}},
{INITIAL_PADDING "VPN-4-1(0|1)*", 2,
{INITIAL_PADDING "VPN-4-10", INITIAL_PADDING "VPN-4-11"}},
{INITIAL_PADDING "(a+X*y+c|p|R|Z*K*y*R+w|Y*6+n+h*k*w+V*F|W*B*e*)", 2,
{INITIAL_PADDING "aaaaaaaa", INITIAL_PADDING "aaXXyyyc"}},
{INITIAL_PADDING "a*", 1, {INITIAL_PADDING "aaaaaaaa"}},
{INITIAL_PADDING "xzxzxzxzxz", 1, {INITIAL_PADDING "xzxzxzxz"}},
{INITIAL_PADDING "xyz*", 1, {INITIAL_PADDING "xyzzzzzz"}},
{INITIAL_PADDING
"abcd:(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1):(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)(0|1)",
2, {INITIAL_PADDING "abcd:000", INITIAL_PADDING "abcd:101"}},
{INITIAL_PADDING "(x*|(0|1|2)(a|b|c|d)+)", 2,
{INITIAL_PADDING "xxxxxxxx", INITIAL_PADDING "0abcdbad"}},
{INITIAL_PADDING "(0|1)(0|1)23456789ABC", 1, {INITIAL_PADDING "11234567"}},
{INITIAL_PADDING "0*123456789ABC*", 3,
{INITIAL_PADDING "00123456", INITIAL_PADDING "00000000",
INITIAL_PADDING "12345678"}},
{INITIAL_PADDING "0123456789A*BC", 1, {INITIAL_PADDING "01234567"}},
{"GNUNETVPN000100000IPEX6-fc5a:4e1:c2ba::1", 1, {"GNUNETVPN000100000IPEX6-"}}
};
const char *graph_start_str = "digraph G {\nrankdir=LR\n";
const char *graph_end_str = "\n}\n";
for (i = 0; i < 13; i++)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Iterating DFA for regex %s\n",
rxstr[i].regex);
/* Create graph */
if (GNUNET_YES == REGEX_INTERNAL_ITERATE_SAVE_DEBUG_GRAPH)
{
GNUNET_asprintf (&filename, "iteration_graph_%u.dot", i);
ctx.graph_filep = fopen (filename, "w");
if (NULL == ctx.graph_filep)
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
"Could not open file %s for saving iteration graph.\n",
filename);
ctx.should_save_graph = GNUNET_NO;
}
else
{
ctx.should_save_graph = GNUNET_YES;
fwrite (graph_start_str, strlen (graph_start_str), 1, ctx.graph_filep);
}
GNUNET_free (filename);
}
else
{
ctx.should_save_graph = GNUNET_NO;
ctx.graph_filep = NULL;
}
/* Iterate over DFA edges */
transition_counter = 0;
ctx.string_count = rxstr[i].string_count;
ctx.strings = rxstr[i].strings;
ctx.match_count = 0;
dfa =
REGEX_INTERNAL_construct_dfa (rxstr[i].regex, strlen (rxstr[i].regex), 0);
REGEX_INTERNAL_iterate_all_edges (dfa, key_iterator, &ctx);
num_transitions =
REGEX_INTERNAL_get_transition_count (dfa) - dfa->start->transition_count;
if (transition_counter < num_transitions)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Automaton has %d transitions, iterated over %d transitions\n",
num_transitions, transition_counter);
error += 1;
}
if (ctx.match_count < ctx.string_count)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Missing initial states for regex %s\n", rxstr[i].regex);
error += (ctx.string_count - ctx.match_count);
}
else if (ctx.match_count > ctx.string_count)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Duplicate initial transitions for regex %s\n",
rxstr[i].regex);
error += (ctx.string_count - ctx.match_count);
}
REGEX_INTERNAL_automaton_destroy (dfa);
/* Finish graph */
if (GNUNET_YES == ctx.should_save_graph)
{
fwrite (graph_end_str, strlen (graph_end_str), 1, ctx.graph_filep);
fclose (ctx.graph_filep);
ctx.graph_filep = NULL;
ctx.should_save_graph = GNUNET_NO;
}
}
for (i = 0; i < 13; i++)
{
ctx.string_count = rxstr[i].string_count;
ctx.strings = rxstr[i].strings;
ctx.match_count = 0;
dfa =
REGEX_INTERNAL_construct_dfa (rxstr[i].regex, strlen (rxstr[i].regex), 0);
REGEX_INTERNAL_dfa_add_multi_strides (NULL, dfa, 2);
REGEX_INTERNAL_iterate_all_edges (dfa, key_iterator, &ctx);
if (ctx.match_count < ctx.string_count)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Missing initial states for regex %s\n", rxstr[i].regex);
error += (ctx.string_count - ctx.match_count);
}
REGEX_INTERNAL_automaton_destroy (dfa);
}
error += ctx.error;
return error;
}
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