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53 Commits

Author SHA1 Message Date
Felix Lange 2499b1b139
rlp: fix string size check in readKind (#15625) 
Issue found by @guidovranken
 2017-12-11 22:47:10 +01:00
Péter Szilágyi 63246e2542
rlp: fix decoding long strings into RawValue types 2017-08-24 13:10:50 +03:00
S. Matthew English 061889d4ea rlp, trie, contracts, compression, consensus: improve comments (#14580) 2017-06-12 14:45:17 +02:00
Felix Lange eee96a5bb7 rlp: add support for "-" struct tag 2017-03-07 12:45:12 +01:00
Felix Lange 6fdd0893c3 all: fix go vet warnings 2016-04-15 11:17:27 +02:00
Felix Lange d04a2e7557 all: update license information 2016-04-15 09:48:05 +02:00
Felix Lange bb07ce3eed rlp: add "tail" struct tag 2016-02-19 11:14:29 +01:00
Felix Lange fc8b246109 rlp: move ListSize to raw.go 2015-09-10 19:41:51 +02:00
Felix Lange 24bb68e7cf rlp: add RawValue 2015-09-10 19:41:51 +02:00
Felix Lange bc17dba8fb rlp: add Split functions 
These functions allow destructuring of raw rlp-encoded bytes
without the overhead of reflection or copying.
 2015-09-10 19:41:51 +02:00
Felix Lange ac32f52ca6 rlp: fix encReader returning nil buffers to the pool 
The bug can cause crashes if Read is called after EOF has been returned.
No code performs such calls right now, but hitting the bug gets more
likely as rlp.EncodeToReader gets used in more places.
 2015-09-10 19:12:32 +02:00
Péter Szilágyi 1d2420323c rlp: add support for boolean encoding/decoding 2015-08-13 12:05:39 +03:00
Felix Lange bfbcfbe4a9 all: fix license headers one more time 
I forgot to update one instance of "go-ethereum" in commit 3f047be5a.
 2015-07-23 18:35:11 +02:00
Felix Lange 3f047be5aa all: update license headers to distiguish GPL/LGPL 
All code outside of cmd/ is licensed as LGPL. The headers
now reflect this by calling the whole work "the go-ethereum library".
 2015-07-22 18:51:45 +02:00
Felix Lange 345590f27f rlp: fix check for canonical byte array size 
Decoding did not reject byte arrays of length one with a single element
b where 55 < b < 128. Such byte arrays must be rejected because
they must be encoded as the single byte b instead.
 2015-07-18 16:23:35 +02:00
Felix Lange cefd948267 rlp: reject trailing data when using DecodeBytes 2015-07-18 01:47:17 +02:00
Felix Lange ea54283b30 all: update license information 2015-07-07 14:12:44 +02:00
Felix Lange 8743cc1c1c rlp: add ListSize 2015-06-29 18:51:48 +02:00
Felix Lange a0566c1058 rlp: remove Flat 2015-06-29 18:51:47 +02:00
Felix Lange 3d0c6a8345 rlp: pool encoder allocations 2015-06-29 18:51:47 +02:00
Felix Lange dd49c8e43d rlp: fix list bounds check overflow (found by go-fuzz) 
The list size checking overflowed if the size information
for a value was bigger than the list. This is resolved by
always performing the check before reading.
 2015-04-28 10:28:15 +02:00
Felix Lange 7180699d40 rlp: require declared number of input elements for array types 2015-04-17 14:45:10 +02:00
Felix Lange 4d5a518a0b rlp: stop accepting lists for byte slices and byte arrays 2015-04-17 14:45:10 +02:00
Felix Lange cad64fb911 rlp: stricter rules for structs and pointers 
The rules have changed as follows:

* When decoding into pointers, empty values no longer produce
  a nil pointer. This can be overriden for struct fields using the
  struct tag "nil".
* When decoding into structs, the input list must contain an element
  for each field.
 2015-04-17 14:45:09 +02:00
Felix Lange 1e2c93aa2d rlp: reject non-minimal input strings 
Input strings of length 1 containing a byte < 56 are non-minimal and
should be encoded as a single byte instead. Reject such strings.
 2015-04-17 14:45:09 +02:00
Felix Lange 6e9f8035a1 rlp: stricter validation of canonical integer format 
All integers (including size information in type tags) need to be
encoded using the smallest possible encoding. This commit expands the
stricter validation introduced for *big.Int in commit 59597d23a5
to all integer types and size tags.
 2015-04-17 14:45:09 +02:00
Felix Lange 6788f955c2 rlp: fix handling of single byte zero when decoding into a pointer 
A single zero byte carries information and should not set the pointer
to nil. This is arguably a corner case. While here, fix the comment
to explain pointer reuse.
 2015-04-17 14:45:09 +02:00
Felix Lange 2750ec47b7 rlp: fix integer overflow in list element size validation 
It is not safe to add anything to s.size.
 2015-04-17 14:45:09 +02:00
Felix Lange c35f4fd0bd rlp: check top-level value sizes against input limit 
This is a preliminary fix for #420 (SEC-18 RLP decoder unsafe
allocation). If a sane input limit is set on the rlp.Stream,
it should no longer be possible to cause huge []byte allocations.
 2015-04-17 14:42:41 +02:00
obscuren 59597d23a5 Reject integers w/ appended zero's 2015-04-04 21:29:23 +02:00
Felix Lange 181a21c67c rlp: encode nil array pointers as empty list or string 2015-03-25 16:46:29 +01:00
Felix Lange a829a56587 rlp: add Stream.Raw 2015-03-21 00:49:31 +01:00
Felix Lange b41185a68f rlp: fix nil pointer decoding 
The generic pointer decoder did not advance the input position
for empty values. This can lead to strange issues and even
infinite loops.
 2015-03-20 22:33:40 +01:00
Felix Lange 965c9babe3 rlp: fix encoding of one element strings and byte slices 
The encoder was missing a special case for one element strings whose
element is below 0x7f. Such strings must be encoded as a single byte
without a string header.
 2015-03-19 12:15:43 +01:00
Felix Lange b94a6a0193 rlp: add DecodeBytes 
Über-convenience.
 2015-03-18 13:17:39 +01:00
Felix Lange cb009a5c4d rlp: don't panic for nil *big.Int 
All other pointer types can handle nil just fine.
 2015-03-17 23:49:49 +01:00
obscuren 76fa75b394 wip 2015-02-13 15:35:54 +01:00
Felix Lange b94f85de22 rlp: add Flat 2015-02-11 19:28:56 +01:00
Felix Lange 8c3095faf0 rlp: fix encoding of arrays with byte element type 2015-02-06 00:00:36 +01:00
Felix Lange fc92abec2c rlp: allow encoding non-empty interface values 
This needs to be supported because []someInterface does occur sometimes.

Funny enough, the fix involves changes to the decoder. makeDecoder
cannot return an error for non-empty interfaces anymore because the type
cache builds both decoder and writer. Do the check at 'runtime' instead.
 2015-01-15 23:35:26 +01:00
Felix Lange 29c46cdf34 rlp: fix Decode benchmarks 2015-01-15 11:12:39 +01:00
Felix Lange 552f5b2693 rlp: add functions for encoding 
I'm reasonably confident that the encoding matches the output of
ethutil.Encode for values that it supports. Some of the tests have been
adpated from the Ethereum testing repository.

There are still TODOs in the code.
 2015-01-15 11:00:19 +01:00
obscuren 6abf8ef78f Merge 2015-01-05 17:10:42 +01:00
Felix Lange 6cf4e0329c rlp: display decoder target type in more error messages 
Decode error messages now say "expected input list for foo.MyStruct"
instead of just "expected List".
 2014-12-09 22:28:49 +01:00
Felix Lange 829730dec4 rlp: remove dead code 2014-12-09 12:49:20 +01:00
Felix Lange c084a7daa5 rlp: fix panic in decodeList on go 1.4+ 
The documentation for reflect.Value.Index states that it will
panic for out-of-bounds indices. Since go 1.4, it actually panics.
 2014-12-09 10:58:46 +01:00
Felix Lange 93e858f88e rlp: remove support for signed integer types 
There is no agreement on how to encode negative integers
across implementations. cpp-ethereum doesn't support them either.
 2014-12-09 10:58:46 +01:00
Felix Lange 4f12f0697e rlp: move decoder type switch to decode.go 2014-12-09 10:52:05 +01:00
Felix Lange f816fdcb69 rlp: include target type in decoder error messages 2014-11-25 16:00:48 +01:00
Felix Lange 205af02a1f rlp: add NewListStream (for p2p) 2014-11-24 19:03:17 +01:00