mirror of
https://github.com/hashcat/hashcat.git
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431 lines
11 KiB
C
431 lines
11 KiB
C
/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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#include "common.h"
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#include "types.h"
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#include "memory.h"
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#include "event.h"
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#include "filehandling.h"
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#include "folder.h"
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#include "hashes.h"
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#include "shared.h"
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#include "thread.h"
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#include "outfile_check.h"
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static int sort_by_salt_buf (const void *v1, const void *v2, MAYBE_UNUSED void * v3)
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{
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return sort_by_salt (v1, v2);
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}
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static int outfile_remove (hashcat_ctx_t *hashcat_ctx)
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{
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// some hash-dependent constants
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hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
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hashes_t *hashes = hashcat_ctx->hashes;
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module_ctx_t *module_ctx = hashcat_ctx->module_ctx;
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outcheck_ctx_t *outcheck_ctx = hashcat_ctx->outcheck_ctx;
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status_ctx_t *status_ctx = hashcat_ctx->status_ctx;
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user_options_t *user_options = hashcat_ctx->user_options;
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const size_t dgst_size = hashconfig->dgst_size;
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const bool is_salted = hashconfig->is_salted;
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const char separator = hashconfig->separator;
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salt_t *salts_buf = hashes->salts_buf;
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const u32 salts_cnt = hashes->salts_cnt;
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char *digests_buf = (char *) hashes->digests_buf;
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char *root_directory = outcheck_ctx->root_directory;
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u32 outfile_check_timer = user_options->outfile_check_timer;
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// buffers
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hash_t hash_buf;
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hash_buf.digest = hcmalloc (dgst_size);
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hash_buf.salt = NULL;
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hash_buf.esalt = NULL;
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hash_buf.hook_salt = NULL;
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hash_buf.cracked = 0;
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hash_buf.hash_info = NULL;
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hash_buf.pw_buf = NULL;
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hash_buf.pw_len = 0;
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if (hashconfig->is_salted == true)
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{
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hash_buf.salt = (salt_t *) hcmalloc (sizeof (salt_t));
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}
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if (hashconfig->esalt_size > 0)
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{
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hash_buf.esalt = hcmalloc (hashconfig->esalt_size);
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}
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if (hashconfig->hook_salt_size > 0)
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{
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hash_buf.hook_salt = hcmalloc (hashconfig->hook_salt_size);
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}
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outfile_data_t *out_info = NULL;
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char **out_files = NULL;
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time_t folder_mtime = 0;
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int out_cnt = 0;
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u32 check_left = outfile_check_timer; // or 1 if we want to check it at startup
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while (status_ctx->shutdown_inner == false)
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{
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sleep (1);
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if (status_ctx->devices_status != STATUS_RUNNING) continue;
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check_left--;
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if (check_left != 0) continue;
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check_left = outfile_check_timer;
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if (hc_path_exist (root_directory) == false) continue;
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const bool is_dir = hc_path_is_directory (root_directory);
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if (is_dir == false) continue;
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struct stat outfile_check_stat;
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if (stat (root_directory, &outfile_check_stat) == -1)
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{
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event_log_error (hashcat_ctx, "%s: %s", root_directory, strerror (errno));
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hcfree (out_files);
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hcfree (out_info);
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return -1;
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}
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if (outfile_check_stat.st_mtime > folder_mtime)
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{
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char **out_files_new = scan_directory (root_directory);
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int out_cnt_new = count_dictionaries (out_files_new);
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outfile_data_t *out_info_new = NULL;
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if (out_cnt_new > 0)
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{
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out_info_new = (outfile_data_t *) hccalloc (out_cnt_new, sizeof (outfile_data_t));
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for (int i = 0; i < out_cnt_new; i++)
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{
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out_info_new[i].file_name = out_files_new[i];
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// check if there are files that we have seen/checked before (and not changed)
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for (int j = 0; j < out_cnt; j++)
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{
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if (strcmp (out_info[j].file_name, out_info_new[i].file_name) != 0) continue;
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struct stat outfile_stat;
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if (stat (out_info_new[i].file_name, &outfile_stat) != 0) continue;
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if (outfile_stat.st_ctime != out_info[j].ctime) continue;
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out_info_new[i].ctime = out_info[j].ctime;
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out_info_new[i].seek = out_info[j].seek;
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}
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}
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}
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hcfree (out_info);
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hcfree (out_files);
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out_files = out_files_new;
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out_cnt = out_cnt_new;
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out_info = out_info_new;
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folder_mtime = outfile_check_stat.st_mtime;
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}
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for (int j = 0; j < out_cnt; j++)
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{
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HCFILE fp;
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if (hc_fopen (&fp, out_info[j].file_name, "rb") == false) continue;
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//hc_thread_mutex_lock (status_ctx->mux_display);
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struct stat outfile_stat;
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if (fstat (hc_fileno (&fp), &outfile_stat))
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{
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hc_fclose (&fp);
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continue;
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}
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if (outfile_stat.st_ctime > out_info[j].ctime)
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{
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out_info[j].ctime = outfile_stat.st_ctime;
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out_info[j].seek = 0;
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}
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hc_fseek (&fp, out_info[j].seek, SEEK_SET);
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char *line_buf = (char *) hcmalloc (HCBUFSIZ_LARGE);
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// large portion of the following code is the same as in potfile_remove_parse
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// maybe subject of a future optimization
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while (!hc_feof (&fp))
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{
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size_t line_len = fgetl (&fp, line_buf, HCBUFSIZ_LARGE);
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if (line_len == 0) continue;
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// this fake separator is used to enable loading outfiles without password
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line_buf[line_len] = separator;
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line_len++;
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for (int tries = 0; tries < PW_MAX; tries++)
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{
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char *last_separator = strrchr (line_buf, separator);
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if (last_separator == NULL) break;
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char *line_hash_buf = line_buf;
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int line_hash_len = last_separator - line_buf;
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line_hash_buf[line_hash_len] = 0;
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if (line_hash_len == 0) continue;
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if (hash_buf.salt)
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{
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memset (hash_buf.salt, 0, sizeof (salt_t));
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}
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if (hash_buf.esalt)
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{
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memset (hash_buf.esalt, 0, hashconfig->esalt_size);
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}
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if (hash_buf.hook_salt)
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{
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memset (hash_buf.hook_salt, 0, hashconfig->hook_salt_size);
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}
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int parser_status = PARSER_HASH_LENGTH;
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if (module_ctx->module_hash_decode_potfile != MODULE_DEFAULT)
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{
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void *tmps = hcmalloc (hashconfig->tmp_size);
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parser_status = module_ctx->module_hash_decode_potfile (hashconfig, hash_buf.digest, hash_buf.salt, hash_buf.esalt, hash_buf.hook_salt, hash_buf.hash_info, line_buf, line_hash_len, tmps);
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hcfree (tmps);
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}
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else
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{
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// "normal" case: hash in the outfile is the same as the hash in the original hash file
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parser_status = module_ctx->module_hash_decode (hashconfig, hash_buf.digest, hash_buf.salt, hash_buf.esalt, hash_buf.hook_salt, hash_buf.hash_info, line_buf, line_hash_len);
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}
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if (parser_status != PARSER_OK) continue;
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salt_t *salt_buf = salts_buf;
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if (is_salted == true)
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{
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salt_buf = (salt_t *) hc_bsearch_r (hash_buf.salt, salts_buf, salts_cnt, sizeof (salt_t), sort_by_salt_buf, (void *) hashconfig);
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}
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if (salt_buf == NULL) continue;
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const u32 salt_pos = salt_buf - salts_buf; // the offset from the start of the array (unit: sizeof (salt_t))
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if (hashes->salts_shown[salt_pos] == 1) break; // already marked as cracked (no action needed)
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u32 idx = salt_buf->digests_offset;
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bool cracked = false;
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if (hashconfig->outfile_check_nocomp == true)
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{
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cracked = true;
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}
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else
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{
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char *digests_buf_ptr = digests_buf + (salt_buf->digests_offset * dgst_size);
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u32 digests_buf_cnt = salt_buf->digests_cnt;
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char *digest_buf = (char *) hc_bsearch_r (hash_buf.digest, digests_buf_ptr, digests_buf_cnt, dgst_size, sort_by_digest_p0p1, (void *) hashconfig);
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if (digest_buf != NULL)
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{
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idx += (digest_buf - digests_buf_ptr) / dgst_size;
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if (hashes->digests_shown[idx] == 1) break;
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cracked = true;
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}
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}
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if (cracked == true)
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{
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hashes->digests_shown[idx] = 1;
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hashes->digests_done++;
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salt_buf->digests_done++;
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if (salt_buf->digests_done == salt_buf->digests_cnt)
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{
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hashes->salts_shown[salt_pos] = 1;
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hashes->salts_done++;
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if (hashes->salts_done == salts_cnt) mycracked (hashcat_ctx);
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}
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break;
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}
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if (status_ctx->shutdown_inner == true) break;
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}
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}
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hcfree (line_buf);
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out_info[j].seek = hc_ftell (&fp);
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//hc_thread_mutex_unlock (status_ctx->mux_display);
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hc_fclose (&fp);
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if (status_ctx->shutdown_inner == true) break;
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}
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}
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hcfree (hash_buf.esalt);
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hcfree (hash_buf.hook_salt);
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hcfree (hash_buf.salt);
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hcfree (hash_buf.digest);
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hcfree (out_info);
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hcfree (out_files);
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return 0;
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}
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HC_API_CALL void *thread_outfile_remove (void *p)
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{
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hashcat_ctx_t *hashcat_ctx = (hashcat_ctx_t *) p;
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const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
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const outcheck_ctx_t *outcheck_ctx = hashcat_ctx->outcheck_ctx;
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if (hashconfig->outfile_check_disable == true) return NULL;
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if (outcheck_ctx->enabled == false) return NULL;
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const int rc = outfile_remove (hashcat_ctx);
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if (rc == -1) return NULL;
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return NULL;
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}
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int outcheck_ctx_init (hashcat_ctx_t *hashcat_ctx)
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{
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const folder_config_t *folder_config = hashcat_ctx->folder_config;
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const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
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outcheck_ctx_t *outcheck_ctx = hashcat_ctx->outcheck_ctx;
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const user_options_t *user_options = hashcat_ctx->user_options;
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outcheck_ctx->enabled = false;
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if (user_options->keyspace == true) return 0;
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if (user_options->benchmark == true) return 0;
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if (user_options->example_hashes == true) return 0;
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if (user_options->speed_only == true) return 0;
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if (user_options->progress_only == true) return 0;
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if (user_options->backend_info == true) return 0;
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if (hashconfig->outfile_check_disable == true) return 0;
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if (user_options->outfile_check_timer == 0) return 0;
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if (user_options->outfile_check_dir == NULL)
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{
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hc_asprintf (&outcheck_ctx->root_directory, "%s/%s.%s", folder_config->session_dir, user_options->session, OUTFILES_DIR);
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}
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else
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{
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outcheck_ctx->root_directory = user_options->outfile_check_dir;
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}
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outcheck_ctx->enabled = true;
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if (hc_path_exist (outcheck_ctx->root_directory) == false)
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{
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if (hc_mkdir (outcheck_ctx->root_directory, 0700) == -1)
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{
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event_log_error (hashcat_ctx, "%s: %s", outcheck_ctx->root_directory, strerror (errno));
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return -1;
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}
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}
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return 0;
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}
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void outcheck_ctx_destroy (hashcat_ctx_t *hashcat_ctx)
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{
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hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
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outcheck_ctx_t *outcheck_ctx = hashcat_ctx->outcheck_ctx;
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user_options_t *user_options = hashcat_ctx->user_options;
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if (outcheck_ctx->enabled == false) return;
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if (hashconfig->outfile_check_disable == true) return;
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if (rmdir (outcheck_ctx->root_directory) == -1)
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{
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if (errno == ENOENT)
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{
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// good, we can ignore
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}
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else if (errno == ENOTEMPTY)
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{
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// good, we can ignore
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}
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else
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{
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event_log_error (hashcat_ctx, "%s: %s", outcheck_ctx->root_directory, strerror (errno));
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//return -1;
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}
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}
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if (user_options->outfile_check_dir == NULL)
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{
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hcfree (outcheck_ctx->root_directory);
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}
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memset (outcheck_ctx, 0, sizeof (outcheck_ctx_t));
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}
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