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-rw-r--r--tests/files/README34
1 files changed, 28 insertions, 6 deletions
diff --git a/tests/files/README b/tests/files/README
index ebf8d863..b1d0b686 100644
--- a/tests/files/README
+++ b/tests/files/README
@@ -101,6 +101,10 @@
Block. Footer Metadata Block contains only Size of Header Metadata
Block and Total Size.
+ good-multi-none-block_1.lzma has Index in Header Metadata Block. The
+ Compressed Size and Uncompressed Size fields are present in the Data
+ Blocks. There is some Footer Padding between the Blocks.
+
2.2. Bad Files
@@ -191,12 +195,15 @@
bad-multi-none-header_2.lzma has Index in the Header Metadata Block,
which describes only one Data Block, while the Stream actually has
- two Data Blocks. A decoder should give an error when it detects the
- second Data Block.
+ two Data Blocks. A sophisticated decoder should give an error when
+ it detects the second Data Block; all Multi-Block decoders must
+ detect the file as corrupt at some point.
bad-multi-none-header_3.lzma contains too small Total Size in Header
- Metadata Block. A decoder should abort decoding before the second
- Data Block, preferably before the first Data Block has been finished.
+ Metadata Block. A sophisticated decoder should abort decoding before
+ the second Data Block, preferably before the first Data Block has
+ been finished; all Multi-Block decoders must detect the file as
+ corrupt at some point.
bad-multi-none-header_4.lzma is like bad-multi-none-header_3.lzma but
with too small Uncompressed Size.
@@ -205,8 +212,23 @@
but the Total Size field is missing from the Footer Metadata Block.
bad-multi-none-header_6.lzma has both Index and Total Size in Header
- Metadata Block, but Total Size doesn't match the Index. A decoder
- should abort before decoding any Data Blocks.
+ Metadata Block, but Total Size doesn't match the Index. A sophisticated
+ decoder should abort before decoding any Data Blocks; all Multi-Block
+ decoders must detect the file as corrupt at some point.
+
+ bad-multi-none-block_1.lzma has wrong Uncompressed Size in the first
+ Data Block. A sophisticated decoder should detect this error before
+ producing any output, because it can see that the Uncompressed Size
+ doesn't match with the Index in Header Metadata Block; all Multi-Block
+ decoders must detect the file as corrupt at some point.
+
+ bad-multi-none-block_2.lzma has too big Compressed Size in the first
+ Data Block. A sophisticated decoder may be able to detect the file as
+ corrupt before producing any output, because Comrpessed Size + size
+ of Block Header exceed the Total Size stored in Index in Header
+ Metadata Block. A sophisticated decoder should be able to detect the
+ error before the end of the first Data Block; all Multi-Block decoders
+ must detect the file as corrupt at some point.
2.3. Malicious Files