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/* SPDX-License-Identifier: Apache-2.0 */
/**
* Copyright 2026 Thorsten Töpper
*
* Keep track of files across different paths or filesystems with a sqlite db
* and identify duplicates. This utility should be used for housekeeping when
* spreading data across multiple FS / integrate old disks into newer setups.
*
* The DB stores SHA512 and SHA256 hashes calculated with the OpenSSL library,
* path and filenames and their corresponding stat() FS data.
*
* @file duplicate_finder.c
*
* vim:ts=4:sw=4:expandtab
*/
#include <stdlib.h>
#include <string.h>
#include "trace_macros.h"
#include "options.h"
#include "kv_manager.h"
#include "directory_scanner.h"
#include "database_interaction.h"
/*=========== DEFINES, CONSTANTS AND TYPES ===========*/
/*=========== GLOBAL VARIABLES ===========*/
/*=========== FUNCTIONS ===========*/
int analyze_db_content();
int scan (const char *path);
int dump(int argc, char **argv, int pos);
/**
* The wrapper around automated DB content analysis.
*
* @return EXIT_SUCCESS on success
* EXIT_FAILURE on failure
*/
int analyze_db_content() {
if ( ! dbi_open(option_sqlite_db_name) ) {
return EXIT_FAILURE;
}
if (option_show_non_duplicates) {
dbi_print_fileinfo_resolved(stdout);
printf("\n\n");
}
printf("---- IDENTICAL HASHES ----\n\n");
if (dbi_print_identical_hashes(stdout) < 0) {
LOGERR("ERROR: Identification of duplicates via hashes failed.\n");
dbi_close();
return EXIT_FAILURE;
}
printf("\n\n---- IDENTICAL FILENAMES ----\n\n");
if (dbi_print_identical_filenames(stdout) < 0) {
LOGERR("ERROR: Identification of duplicates via filenames failed.\n");
dbi_close();
return EXIT_FAILURE;
}
dbi_close();
return EXIT_SUCCESS;
}
/**
* dump requested database content
* @param argv argv array from main()
* @param pos The position where to begin in the array
* @param argc The array size from main()
*
* @return EXIT_SUCCESS on success
* EXIT_FAILURE on failure
*/
int dump(int argc, char **argv, int pos) {
int i = pos;
if (pos >= argc) {
LOGERR("ERROR: Missing parameter\n");
return EXIT_FAILURE;
}
if ( ! dbi_open(option_sqlite_db_name) ) {
return EXIT_FAILURE;
}
for (i=pos; i<argc; i++) {
if (strcmp("fullpath", argv[i]) == 0) {
dbi_print_fullpaths(stdout);
}
if (option_show_non_duplicates ||
strcmp("fileinfos", argv[i]) == 0) {
dbi_print_fileinfo_resolved(stdout);
}
if (strcmp("filenames", argv[i]) == 0) {
dbi_print_filenames(stdout);
}
}
dbi_close();
return EXIT_SUCCESS;
}
/**
* Scan the given path...
*
* @path path to scan
* @return EXIT_SUCCESS on success
* EXIT_FAILURE on failure
*/
int scan(const char *path) {
if ( ! kv_open_storage(option_gdbm_db_name) ) {
return EXIT_FAILURE;
}
if ( ! dbi_open(option_sqlite_db_name) ) {
return EXIT_FAILURE;
}
traverse_directory_tree(path);
#ifdef DEBUGBUILD
kv_dump(stdout);
#endif
process_gdbm_content();
#ifdef DEBUGBUILD
kv_dump(stdout);
#endif
/* TODO: Implement signal handlers and add the close for sqlite and gdbm dbs there */
kv_close_storage();
dbi_close();
return EXIT_SUCCESS;
}
int main(int argc, char **argv) {
int path_index = 1, i = 1, rc = EXIT_SUCCESS;
if (argc > 1) {
path_index = parse_arguments(argc, argv);
} else {
LOGERR("ERROR: Too few arguments given, see --help or man.\n");
return EXIT_FAILURE;
}
DBGTRC("Database: %s\n", option_sqlite_db_name);
DBGTRC("KVStorage: %s\n", option_gdbm_db_name);
if (option_mode == MODE_SCAN) {
if (path_index == argc) {
return scan(".");
}
for (i=path_index; i<argc; i++) {
rc = scan(argv[i]);
if (rc == EXIT_FAILURE) {
LOGERR("Failed during scan of path %d/%d: '%s'\n", i, (argc-path_index), argv[i]);
break;
}
}
return rc;
}
if (option_mode == MODE_DUMP) {
return dump(argc, argv, path_index);
}
if (option_mode == MODE_ANALYZE_DB) {
return analyze_db_content();
}
LOGERR("ERROR: No proper modus operandi, the dev missed something.\n");
return EXIT_FAILURE;
}
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