static void single_init(void)
{
struct db_salt *salt;
log_event("Proceeding with \"single crack\" mode");
progress = 0;
length = single_db->format->params.plaintext_length;
key_count = single_db->format->params.min_keys_per_crypt;
if (key_count < SINGLE_HASH_MIN) key_count = SINGLE_HASH_MIN;
if (rpp_init(rule_ctx, SUBSECTION_SINGLE)) {
log_event("! No \"single crack\" mode rules found");
fprintf(stderr, "No \"single crack\" mode rules found in %s\n",
cfg_name);
error();
}
rules_init(length);
rec_rule = rule_number = 0;
rule_count = rules_count(rule_ctx, 0);
log_event("- %d preprocessed word mangling rules", rule_count);
status_init(get_progress, 0);
rec_restore_mode(restore_state);
rec_init(single_db, save_state);
salt = single_db->salts;
do {
single_alloc_keys(&salt->keys);
} while ((salt = salt->next));
if (key_count > 1)
log_event("- Allocated %d buffer%s of %d candidate passwords%s",
single_db->salt_count,
single_db->salt_count != 1 ? "s" : "",
key_count,
single_db->salt_count != 1 ? " each" : "");
guessed_keys = NULL;
single_alloc_keys(&guessed_keys);
crk_init(single_db, NULL, guessed_keys);
}
void do_wordlist_crack(struct db_main *db, char *name, int rules)
{
union {
char buffer[2][LINE_BUFFER_SIZE + CACHE_BANK_SHIFT];
ARCH_WORD dummy;
} aligned;
char *line = aligned.buffer[0], *last = aligned.buffer[1];
struct rpp_context ctx;
char *prerule, *rule, *word;
char *(*apply)(char *word, char *rule, int split, char *last);
int dist_rules, dist_switch;
unsigned long my_words, their_words, my_words_left;
log_event("Proceeding with wordlist mode");
if (name) {
if (!(word_file = fopen(path_expand(name), "r")))
pexit("fopen: %s", path_expand(name));
log_event("- Wordlist file: %.100s", path_expand(name));
} else {
word_file = stdin;
log_event("- Reading candidate passwords from stdin");
}
length = db->format->params.plaintext_length;
if (rules) {
if (rpp_init(rule_ctx = &ctx, SUBSECTION_WORDLIST)) {
log_event("! No wordlist mode rules found");
if (john_main_process)
fprintf(stderr,
"No wordlist mode rules found in %s\n",
cfg_name);
error();
}
rules_init(length);
rule_count = rules_count(&ctx, -1);
log_event("- %d preprocessed word mangling rules", rule_count);
apply = rules_apply;
} else {
rule_ctx = NULL;
rule_count = 1;
log_event("- No word mangling rules");
apply = dummy_rules_apply;
}
rule_number = 0;
line_number = 0;
status_init(get_progress, 0);
rec_restore_mode(restore_state);
rec_init(db, save_state);
crk_init(db, fix_state, NULL);
prerule = rule = "";
if (rules)
prerule = rpp_next(&ctx);
/* A string that can't be produced by fgetl(). */
last[0] = '\n';
last[1] = 0;
dist_rules = 0;
dist_switch = rule_count; /* never */
my_words = ~0UL; /* all */
their_words = 0;
if (options.node_count) {
int rule_rem = rule_count % options.node_count;
const char *now, *later = "";
dist_switch = rule_count - rule_rem;
if (!rule_rem || rule_number < dist_switch) {
dist_rules = 1;
now = "rules";
if (rule_rem)
later = ", then switch to distributing words";
} else {
dist_switch = rule_count; /* never */
my_words = options.node_max - options.node_min + 1;
their_words = options.node_count - my_words;
now = "words";
}
log_event("- Will distribute %s across nodes%s", now, later);
}
my_words_left = my_words;
if (their_words) {
if (line_number) {
/* Restored session. line_number is right after a word we've actually used. */
int for_node = line_number % options.node_count + 1;
if (for_node < options.node_min ||
for_node > options.node_max) {
/* We assume that line_number is at the beginning of other nodes' block */
if (skip_lines(their_words, line) &&
/* Check for error since a mere EOF means next rule (the loop below should see
* the EOF again, and it will skip to next rule if applicable) */
ferror(word_file))
prerule = NULL;
} else {
my_words_left =
options.node_max - for_node + 1;
}
} else {
/* New session. Skip lower-numbered nodes' lines. */
if (skip_lines(options.node_min - 1, line))
prerule = NULL;
}
}
if (prerule)
do {
if (rules) {
if (dist_rules) {
int for_node =
rule_number % options.node_count + 1;
if (for_node < options.node_min ||
for_node > options.node_max)
goto next_rule;
}
if ((rule = rules_reject(prerule, -1, last, db))) {
if (strcmp(prerule, rule))
log_event("- Rule #%d: '%.100s'"
" accepted as '%.100s'",
rule_number + 1, prerule, rule);
else
log_event("- Rule #%d: '%.100s'"
" accepted",
rule_number + 1, prerule);
} else {
log_event("- Rule #%d: '%.100s' rejected",
rule_number + 1, prerule);
goto next_rule;
}
}
while (fgetl(line, LINE_BUFFER_SIZE, word_file)) {
line_number++;
if (line[0] != '#') {
process_word:
if ((word = apply(line, rule, -1, last))) {
last = word;
if (ext_filter(word))
if (crk_process_key(word)) {
rules = 0;
break;
}
}
next_word:
if (--my_words_left)
continue;
if (skip_lines(their_words, line))
break;
my_words_left = my_words;
continue;
}
if (strncmp(line, "#!comment", 9))
goto process_word;
goto next_word;
}
if (ferror(word_file))
break;
if (rules) {
next_rule:
if (!(rule = rpp_next(&ctx))) break;
rule_number++;
if (rule_number >= dist_switch) {
log_event("- Switching to distributing words");
dist_rules = 0;
dist_switch = rule_count; /* not anymore */
my_words =
options.node_max - options.node_min + 1;
their_words = options.node_count - my_words;
}
line_number = 0;
if (fseek(word_file, 0, SEEK_SET))
pexit("fseek");
if (their_words &&
skip_lines(options.node_min - 1, line))
break;
}
my_words_left = my_words;
} while (rules);
crk_done();
rec_done(event_abort || (status.pass && db->salts));
if (ferror(word_file)) pexit("fgets");
if (name) {
if (event_abort)
progress = get_progress();
else
progress = 100;
if (fclose(word_file)) pexit("fclose");
word_file = NULL;
}
}
static void single_init(void)
{
struct db_salt *salt;
log_event("Proceeding with \"single crack\" mode");
if ((words_pair_max = cfg_get_int(SECTION_OPTIONS, NULL,
"SingleWordsPairMax")) < 0)
words_pair_max = SINGLE_WORDS_PAIR_MAX;
progress = 0;
length = single_db->format->params.plaintext_length;
if (options.force_maxlength && options.force_maxlength < length)
length = options.force_maxlength;
key_count = single_db->format->params.min_keys_per_crypt;
if (key_count < SINGLE_HASH_MIN)
key_count = SINGLE_HASH_MIN;
/*
* We use "short" for buffered key indices and "unsigned short" for buffered
* key offsets - make sure these don't overflow.
*/
if (key_count > 0x8000)
key_count = 0x8000;
while (key_count > 0xffff / length + 1)
key_count >>= 1;
if (rpp_init(rule_ctx, pers_opts.activesinglerules)) {
log_event("! No \"%s\" mode rules found",
pers_opts.activesinglerules);
if (john_main_process)
fprintf(stderr, "No \"%s\" mode rules found in %s\n",
pers_opts.activesinglerules, cfg_name);
error();
}
rules_init(length);
rec_rule = rule_number = 0;
rule_count = rules_count(rule_ctx, 0);
log_event("- %d preprocessed word mangling rules", rule_count);
status_init(get_progress, 0);
rec_restore_mode(restore_state);
rec_init(single_db, save_state);
salt = single_db->salts;
do {
single_alloc_keys(&salt->keys);
} while ((salt = salt->next));
if (key_count > 1)
log_event("- Allocated %d buffer%s of %d candidate passwords%s",
single_db->salt_count,
single_db->salt_count != 1 ? "s" : "",
key_count,
single_db->salt_count != 1 ? " each" : "");
guessed_keys = NULL;
single_alloc_keys(&guessed_keys);
crk_init(single_db, NULL, guessed_keys);
}
