int Hash::InitHash() {
/************************************************
ハッシュの初期化
ファイルから読み込めた場合は0以外の値を返す。
************************************************/
int i, j;
if( 0 == ReadHash() ) {
// ファイルからの読み込みに失敗
for( i = 0 ; i <= GRY - SFU ; i++ ) {
for( j = 0x11 ; j <= 0x99 ; j++ )
hash_ban[i][j] = gen_rand64();
}
for( i = 0 ; i <= GHI - SFU ; i++ ) {
for( j = 0 ; j <= 18 ; j++ )
hash_dai[i][j] = gen_rand64();
}
hash_sengo = gen_rand64();
// 生成した乱数を記録
WriteHash();
return 0;
}
return 1;
}
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;
}
}
CTag *CFileDataIO::ReadTag(bool bOptACP) const
{
CTag *retVal = NULL;
wxString name;
byte type = 0;
try {
type = ReadUInt8();
name = ReadString(false);
switch (type)
{
// NOTE: This tag data type is accepted and stored only to give us the possibility to upgrade
// the net in some months.
//
// And still.. it doesnt't work this way without breaking backward compatibility. To properly
// do this without messing up the network the following would have to be done:
// - those tag types have to be ignored by any client, otherwise those tags would also be sent (and
// that's really the problem)
//
// - ignoring means, each client has to read and right throw away those tags, so those tags get
// get never stored in any tag list which might be sent by that client to some other client.
//
// - all calling functions have to be changed to deal with the 'nr. of tags' attribute (which was
// already parsed) correctly.. just ignoring those tags here is not enough, any taglists have to
// be built with the knowledge that the 'nr. of tags' attribute may get decreased during the tag
// reading..
//
// If those new tags would just be stored and sent to remote clients, any malicious or just bugged
// client could let send a lot of nodes "corrupted" packets...
//
case TAGTYPE_HASH16:
{
retVal = new CTagHash(name, ReadHash());
break;
}
case TAGTYPE_STRING:
retVal = new CTagString(name, ReadString(bOptACP));
break;
case TAGTYPE_UINT64:
retVal = new CTagInt64(name, ReadUInt64());
break;
case TAGTYPE_UINT32:
retVal = new CTagInt32(name, ReadUInt32());
break;
case TAGTYPE_UINT16:
retVal = new CTagInt16(name, ReadUInt16());
break;
case TAGTYPE_UINT8:
retVal = new CTagInt8(name, ReadUInt8());
break;
case TAGTYPE_FLOAT32:
retVal = new CTagFloat(name, ReadFloat());
break;
// NOTE: This tag data type is accepted and stored only to give us the possibility to upgrade
// the net in some months.
//
// And still.. it doesnt't work this way without breaking backward compatibility
case TAGTYPE_BSOB:
{
uint8 size = 0;
CScopedArray<unsigned char> value(ReadBsob(&size));
retVal = new CTagBsob(name, value.get(), size);
break;
}
default:
throw wxString(CFormat(wxT("Invalid Kad tag type; type=0x%02x name=%s\n")) % type % name);
}
} catch(const CMuleException& e) {
AddLogLineN(e.what());
delete retVal;
throw;
} catch(const wxString& e) {
AddLogLineN(e);
throw;
}
return retVal;
}
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, const char *filename, unsigned char digest[EVP_MAX_MD_SIZE + 1], HashMethod type,
Attributes attr, const Promise *pp, PromiseResult *result)
{
int size;
unsigned char dbdigest[EVP_MAX_MD_SIZE + 1];
CF_DB *dbp;
char buffer[EVP_MAX_MD_SIZE * 4];
size = HashSizeFromId(type);
if (!OpenDB(&dbp, dbid_checksums))
{
cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, attr, "Unable to open the hash database!");
*result = PromiseResultUpdate(*result, PROMISE_RESULT_FAIL);
return false;
}
if (ReadHash(dbp, type, filename, dbdigest))
{
if (memcmp(digest, dbdigest, size) != 0)
{
Log(LOG_LEVEL_NOTICE, "Hash '%s' for '%s' changed!", HashNameFromId(type), filename);
if (pp->comment)
{
Log(LOG_LEVEL_NOTICE, "Preceding promise '%s'", pp->comment);
}
if (attr.change.update)
{
cfPS(ctx, LOG_LEVEL_NOTICE, PROMISE_RESULT_CHANGE, pp, attr, "Updating hash for '%s' to '%s'", filename,
HashPrintSafe(type, true, digest, buffer));
*result = PromiseResultUpdate(*result, PROMISE_RESULT_CHANGE);
DeleteHash(dbp, type, filename);
WriteHash(dbp, type, filename, digest);
}
else
{
cfPS(ctx, LOG_LEVEL_NOTICE, PROMISE_RESULT_FAIL, pp, attr, "Hash for file '%s' changed", filename);
*result = PromiseResultUpdate(*result, PROMISE_RESULT_FAIL);
}
CloseDB(dbp);
return true;
}
cfPS(ctx, LOG_LEVEL_VERBOSE, PROMISE_RESULT_NOOP, pp, attr, "File hash for %s is correct", filename);
*result = PromiseResultUpdate(*result, PROMISE_RESULT_NOOP);
CloseDB(dbp);
return false;
}
else
{
/* Key was not found, so install it */
cfPS(ctx, LOG_LEVEL_NOTICE, PROMISE_RESULT_CHANGE, pp, attr, "File '%s' was not in '%s' database - new file found", filename,
HashNameFromId(type));
*result = PromiseResultUpdate(*result, PROMISE_RESULT_CHANGE);
Log(LOG_LEVEL_DEBUG, "Storing checksum for '%s' in database '%s'", filename,
HashPrintSafe(type, true, 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;
}
}
