int HashesMatch(unsigned char digest1[EVP_MAX_MD_SIZE + 1], unsigned char digest2[EVP_MAX_MD_SIZE + 1], enum cfhashes type) { int i, size = EVP_MAX_MD_SIZE; size = FileHashSize(type); CfDebug("1. CHECKING DIGEST type %d - size %d (%s)\n", type, size, HashPrint(type, digest1)); CfDebug("2. CHECKING DIGEST type %d - size %d (%s)\n", type, size, HashPrint(type, digest2)); for (i = 0; i < size; i++) { if (digest1[i] != digest2[i]) { return false; } } return true; }
int HashesMatch(unsigned char digest1[EVP_MAX_MD_SIZE + 1], unsigned char digest2[EVP_MAX_MD_SIZE + 1], HashMethod type) { int i, size = EVP_MAX_MD_SIZE; char buffer[EVP_MAX_MD_SIZE * 4]; size = FileHashSize(type); CfDebug("1. CHECKING DIGEST type %d - size %d (%s)\n", type, size, HashPrintSafe(type, digest1, buffer)); CfDebug("2. CHECKING DIGEST type %d - size %d (%s)\n", type, size, HashPrintSafe(type, digest2, buffer)); for (i = 0; i < size; i++) { if (digest1[i] != digest2[i]) { return false; } } return true; }
int FileHashChanged(char *filename, unsigned char digest[EVP_MAX_MD_SIZE + 1], int warnlevel, enum cfhashes type, Attributes attr, Promise *pp) /* Returns false if filename never seen before, and adds a checksum to the database. Returns true if hashes do not match and also potentially updates database to the new value */ { int i, size = 21; unsigned char dbdigest[EVP_MAX_MD_SIZE + 1]; CF_DB *dbp; CfDebug("HashChanged: key %s (type=%d) with data %s\n", filename, type, HashPrint(type, digest)); size = FileHashSize(type); if (!OpenDB(&dbp, dbid_checksums)) { cfPS(OUTPUT_LEVEL_ERROR, CF_FAIL, "", pp, attr, "Unable to open the hash database!"); return false; } if (ReadHash(dbp, type, filename, dbdigest)) { for (i = 0; i < size; i++) { if (digest[i] != dbdigest[i]) { CfDebug("Found cryptohash for %s in database but it didn't match\n", filename); CfOut(warnlevel, "", "ALERT: Hash (%s) for %s changed!", FileHashName(type), filename); if (pp->ref) { CfOut(warnlevel, "", "Preceding promise: %s", pp->ref); } if (attr.change.update) { cfPS(warnlevel, CF_CHG, "", pp, attr, " -> Updating hash for %s to %s", filename, HashPrint(type, digest)); DeleteHash(dbp, type, filename); WriteHash(dbp, type, filename, digest); } else { cfPS(warnlevel, CF_FAIL, "", pp, attr, "!! Hash for file \"%s\" changed", filename); } CloseDB(dbp); return true; } } cfPS(OUTPUT_LEVEL_VERBOSE, CF_NOP, "", pp, attr, " -> File hash for %s is correct", filename); CloseDB(dbp); return false; } else { /* Key was not found, so install it */ cfPS(warnlevel, CF_CHG, "", pp, attr, " !! File %s was not in %s database - new file found", filename, FileHashName(type)); CfDebug("Storing checksum for %s in database %s\n", filename, HashPrint(type, digest)); WriteHash(dbp, type, filename, digest); LogHashChange(filename, cf_file_new, "New file found", pp); CloseDB(dbp); return false; } }
int FileHashChanged(EvalContext *ctx, char *filename, unsigned char digest[EVP_MAX_MD_SIZE + 1], HashMethod type, Attributes attr, Promise *pp) { int i, size = 21; unsigned char dbdigest[EVP_MAX_MD_SIZE + 1]; CF_DB *dbp; char buffer[EVP_MAX_MD_SIZE * 4]; CfDebug("HashChanged: key %s (type=%d) with data %s\n", filename, type, HashPrintSafe(type, digest, buffer)); size = FileHashSize(type); if (!OpenDB(&dbp, dbid_checksums)) { cfPS(ctx, OUTPUT_LEVEL_ERROR, PROMISE_RESULT_FAIL, "", pp, attr, "Unable to open the hash database!"); return false; } if (ReadHash(dbp, type, filename, dbdigest)) { for (i = 0; i < size; i++) { if (digest[i] != dbdigest[i]) { CfDebug("Found cryptohash for %s in database but it didn't match\n", filename); CfOut(OUTPUT_LEVEL_ERROR, "", "ALERT: Hash (%s) for %s changed!", FileHashName(type), filename); if (pp->comment) { CfOut(OUTPUT_LEVEL_ERROR, "", "Preceding promise: %s", pp->comment); } if (attr.change.update) { cfPS(ctx, OUTPUT_LEVEL_ERROR, PROMISE_RESULT_CHANGE, "", pp, attr, " -> Updating hash for %s to %s", filename, HashPrintSafe(type, digest, buffer)); DeleteHash(dbp, type, filename); WriteHash(dbp, type, filename, digest); } else { cfPS(ctx, OUTPUT_LEVEL_ERROR, PROMISE_RESULT_FAIL, "", pp, attr, "!! Hash for file \"%s\" changed", filename); } CloseDB(dbp); return true; } } cfPS(ctx, OUTPUT_LEVEL_VERBOSE, PROMISE_RESULT_NOOP, "", pp, attr, " -> File hash for %s is correct", filename); CloseDB(dbp); return false; } else { /* Key was not found, so install it */ cfPS(ctx, OUTPUT_LEVEL_ERROR, PROMISE_RESULT_CHANGE, "", pp, attr, " !! File %s was not in %s database - new file found", filename, FileHashName(type)); CfDebug("Storing checksum for %s in database %s\n", filename, HashPrintSafe(type, digest, buffer)); WriteHash(dbp, type, filename, digest); LogHashChange(filename, FILE_STATE_NEW, "New file found", pp); CloseDB(dbp); return false; } }
int FileHashChanged(EvalContext *ctx, char *filename, unsigned char digest[EVP_MAX_MD_SIZE + 1], HashMethod type, Attributes attr, Promise *pp) { int i, size = 21; unsigned char dbdigest[EVP_MAX_MD_SIZE + 1]; CF_DB *dbp; char buffer[EVP_MAX_MD_SIZE * 4]; size = FileHashSize(type); if (!OpenDB(&dbp, dbid_checksums)) { cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, attr, "Unable to open the hash database!"); return false; } if (ReadHash(dbp, type, filename, dbdigest)) { for (i = 0; i < size; i++) { if (digest[i] != dbdigest[i]) { Log(LOG_LEVEL_ERR, "Hash '%s' for '%s' changed!", FileHashName(type), filename); if (pp->comment) { Log(LOG_LEVEL_ERR, "Preceding promise: %s", pp->comment); } if (attr.change.update) { cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_CHANGE, pp, attr, "Updating hash for %s to %s", filename, HashPrintSafe(type, digest, buffer)); DeleteHash(dbp, type, filename); WriteHash(dbp, type, filename, digest); } else { cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, attr, "!! Hash for file \"%s\" changed", filename); } CloseDB(dbp); return true; } } cfPS(ctx, LOG_LEVEL_VERBOSE, PROMISE_RESULT_NOOP, pp, attr, "File hash for %s is correct", filename); CloseDB(dbp); return false; } else { /* Key was not found, so install it */ cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_CHANGE, pp, attr, "File '%s' was not in '%s' database - new file found", filename, FileHashName(type)); Log(LOG_LEVEL_DEBUG, "Storing checksum for '%s' in database '%s'", filename, HashPrintSafe(type, digest, buffer)); WriteHash(dbp, type, filename, digest); LogHashChange(filename, FILE_STATE_NEW, "New file found", pp); CloseDB(dbp); return false; } }