Uodemo.dat - Revision history

Batlin at 09:34, 24 August 2009

2009-08-24T09:34:01Z

Batlin: Protected "Uodemo.dat" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite))

2009-06-23T18:47:14Z

Protected "Uodemo.dat" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite))

Batlin at 09:29, 8 June 2009

2009-06-08T09:29:38Z

Batlin at 09:28, 8 June 2009

2009-06-08T09:28:26Z

Batlin at 07:56, 26 May 2009

2009-05-26T07:56:24Z

Batlin at 07:54, 26 May 2009

2009-05-26T07:54:49Z

Batlin at 11:59, 22 May 2009

2009-05-22T11:59:30Z

Batlin at 11:58, 22 May 2009

2009-05-22T11:58:52Z

Batlin at 11:58, 22 May 2009

2009-05-22T11:58:02Z

81.83.65.57 at 08:54, 22 May 2009

2009-05-22T08:54:12Z

@@ Line 2: / Line 2: @@
 The archive is divided in 2 area's:
-  header area (dynamic in size, the size is a multiple of 280 bytes)
+ header area (dynamic in size, the size is a multiple of 280 bytes)
-  data area (dynamic in size)
+ data area (dynamic in size)
 The header area consists of minimum 1 header and can contain up to 3000 files.  More files are simply not supported by the code.  If the filename in the header is equal to "@@@.@@@" then the end of the header area is reached.  The end of the header area marks the beginning of the data area.
@@ Line 13: / Line 13: @@
 One header entry is 280 bytes in size.
-struct datheader
+ struct datheader
-−
+ {
-  char filename[260];      // 260 is MAX_PATH in Windows
+   char filename[260];      // 260 is MAX_PATH in Windows
-  int32 filepointer;       // this pointer is relative from the beginning of the data area
+   int32 filepointer;       // this pointer is relative from the beginning of the data area
-  int32 maximumsize;       // if set, the file can grow until this size is reached
+   int32 maximumsize;       // if set, the file can grow until this size is reached
-  int32 isreadonly;        // 0: writeable, <>0: read-only
+   int32 isreadonly;        // 0: writeable, <>0: read-only
-  int32 encryptedsize;     // encrypted file size (not the actual file size)
+   int32 encryptedsize;     // encrypted file size (not the actual file size)
-  int32 fileposition;      // internally used by [[uodemo.exe]], not relevant for reading from the archive
+   int32 fileposition;      // internally used by [[uodemo.exe]], not relevant for reading from the archive
-};
+ };
 The actual file size can be obtained by reading the last int32 in the file data after decryption.
@@ Line 28: / Line 28: @@
 There are programs out there to extract the files from this DAT file.
-  DemoDat v0.34 [http://web.archive.org/web/19990127212423/uox.stratics.com/files.html]
+ DemoDat v0.34 [http://web.archive.org/web/19990127212423/uox.stratics.com/files.html]
-  Ultima Online uodemo.dat extractor 0.1b [http://aluigi.altervista.org/papers.htm#others-file]
+ Ultima Online uodemo.dat extractor 0.1b [http://aluigi.altervista.org/papers.htm#others-file]
 The DemoDat utility can nowhere be found on the internet, if you have this utility let us know.
 While it is technically possible to replace and add files in this archive file, no one has officially done the effort to do so.

← Older revision		Revision as of 09:29, 8 June 2009
Line 1:		Line 1:
−	This is a custom made archive file for the Ultima Online Gold Demo.	+	This is a custom made archive file for the Ultima Online Gold Demo. To learn about the contents of this file please go to the [[.rundir]] section.

	The archive is divided in 2 area's:		The archive is divided in 2 area's:

@@ Line 18: / Line 18: @@
    int32 filepointer;       // this pointer is relative from the beginning of the data area
    int32 maximumsize;       // if set, the file can grow until this size is reached
-   int32 isreadyonly;       // 0 = writeable, <> = read-only
+   int32 isreadonly;        // 0: writeable, <>0: read-only
-   int32 encryptedsize;     // encrypted filesize (not the actual filesize)
+   int32 encryptedsize;     // encrypted file size (not the actual file size)
    int32 fileposition;      // internally used by [[uodemo.exe]], not relevant for reading from the archive
 };
-The actual filesize can be obtained by reading the last int32 in the file data after decryption.
+The actual file size can be obtained by reading the last int32 in the file data after decryption.
 This means that for a 0 length file, the encrypted size will be atleast be 4 bytes (size of one int32).
 There are programs out there to extract the files from this DAT file.

@@ Line 28: / Line 28: @@
 There are programs out there to extract the files from this DAT file.
    DemoDat v0.34 [http://web.archive.org/web/19990127212423/uox.stratics.com/files.html]
-   Ultima Online uodemo.dat extractor 0.1b [[http://aluigi.altervista.org/papers.htm#others-file]]
+   Ultima Online uodemo.dat extractor 0.1b [http://aluigi.altervista.org/papers.htm#others-file]
 The DemoDat utility can nowhere be found on the internet, if you have this utility let us know.

← Older revision		Revision as of 07:54, 26 May 2009
Line 25:		Line 25:
	The actual filesize can be obtained by reading the last int32 in the file data after decryption.		The actual filesize can be obtained by reading the last int32 in the file data after decryption.
	This means that for a 0 length file, the encrypted size will be atleast be 4 bytes (size of one int32).		This means that for a 0 length file, the encrypted size will be atleast be 4 bytes (size of one int32).
		+
		+	There are programs out there to extract the files from this DAT file.
		+	DemoDat v0.34 [http://web.archive.org/web/19990127212423/uox.stratics.com/files.html]
		+	Ultima Online uodemo.dat extractor 0.1b [[http://aluigi.altervista.org/papers.htm#others-file]]
		+
		+	The DemoDat utility can nowhere be found on the internet, if you have this utility let us know.

← Older revision	Revision as of 18:47, 23 June 2009
(No difference)

@@ Line 8: / Line 8: @@
 The file is encrypted using the GOST block cipher.
-Each header is encrypted seperatly, the data of each file is encrypted in blocks of 4KB (4096 bytes).
+Each header is encrypted separately, the data of each file is encrypted in blocks of 4KB (4096 bytes).
 The same encryption/decryption key is used for the entire archive.