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2017-02-04bplist: Fix OOB write on heap buffer and improve recursion checkGravatar Nikias Bassen1-8/+14
Issue #92 pointed out an problem with (invalid) bplist files which have exactly one structured node whose subnode reference itself. The recursion check used a fixed size array with the size of the total number of objects. In this case the number of objects is 1 but the recursion check code wanted to set the node_index for the level 1 which leads to an OOB write on the heap. This commit fixes/improves two things: 1) Prevent OOB write by using a dynamic data storage for the used node indexes (plist_t of type PLIST_ARRAY) 2) Reduces the memory usage of large binary plists, because not the total number of nodes in the binary plist, but the number of recursion levels is important for the recursion check.
2017-02-03bplist: Prevent OOB read when parsing data/string/array/dict size nodesGravatar Nikias Bassen1-0/+2
As reported in #91, the code that will read the big endian integer value of variable size did not check if the actual number of bytes is still withing the range of the actual plist data. This commit fixes the issue with proper bounds checking.
2017-02-03bplist: Unify size node parsing for data/string/array/dict nodesGravatar Nikias Bassen1-45/+24
2017-02-01bplist: Fix possible out-of-bounds read in parse_array_node() with proper ↵Gravatar Nikias Bassen1-4/+12
bounds checking
2017-02-01bplist: Avoid heap buffer allocation when parsing array/dict/string/data ↵Gravatar Nikias Bassen1-20/+25
node sizes > 14 The sizes where effectively parsed by calling parse_uint_node() which allocates a node_t (along with plist_data_t) that is immediately freed after retrieving the integer value it holds. This commit changes the code to directly operate on the binary stream to 'just' read the size instead, reducing the memory footprint further.
2017-01-28bplist: Don't duplicate output buffer in plist_to_bin()Gravatar Nikias Bassen1-4/+4
2017-01-28bplist: Improve parsing unicode nodesGravatar Nikias Bassen1-23/+10
2017-01-28bplist: Improve writing of offset tableGravatar Nikias Bassen1-12/+3
2017-01-28bplist: Improve writing of array and dictionary nodesGravatar Nikias Bassen1-54/+17
2017-01-28bplist: Improve writing of data, string, and unicode nodesGravatar Nikias Bassen1-18/+7
2017-01-28bplist: Improve writing of UID nodesGravatar Nikias Bassen1-12/+6
2017-01-28bplist: Improve writing of integer nodesGravatar Nikias Bassen1-21/+12
2017-01-28bplist: Improve real/date node de/serializationGravatar Nikias Bassen1-65/+56
2017-01-25bplist: Fix UID node parsing to match Apple's parserGravatar Nikias Bassen1-14/+7
Apple only allows 32 bit unsigned values for UID nodes. Also the encoding of the length is different from the encoding used for other node types. The nibble used to mark the size is 1 less than the actual size of the integer value data, so 0 means 1 byte length 1 means 2 bytes length, etc.
2017-01-25bplist: Improve integer node parsing, remove unnecessary memcpy()Gravatar Nikias Bassen1-4/+2
2017-01-19bplist: Check for invalid ref_size in bplist trailerGravatar Nikias Bassen1-0/+3
2017-01-19bplist: Mass-rename 'dict_size' and 'param_dict_size' to more appropriate ↵Gravatar Nikias Bassen1-30/+30
'ref_size'
2017-01-19bplist: Use proper struct for binary plist trailerGravatar Nikias Bassen1-47/+31
2017-01-19bplist: Check for invalid offset_size in bplist trailerGravatar Wang Junjie1-0/+3
2017-01-18bplist: Improve UINT_TO_HOST macro, remove uint24_from_be functionGravatar Nikias Bassen1-17/+11
The uint24_from_be function used memcpy and a call to byte_convert. Instead the macro now shifts the data appropriately with a new beNtoh macro that eventually uses be64toh. This commit also fixes the problem where binary plist data with other non-power-of-2 sizes (like 5,6, or 7) where not handled correctly, and actually supports sizes larger than 8 bytes though only the last 8 bytes are actually converted (nobody will come up with such a large plist anyway).
2017-01-16bplist: Disallow key nodes with non-string node typesGravatar Nikias Bassen1-0/+7
As reported in #86, the binary plist parser would force the type of the key node to be of type PLIST_KEY while the node might be of a different i.e. non-string type. A following plist_free() might then call free() on an invalid pointer; e.g. if the node is of type integer, its value would be considered a pointer, and free() would cause an error. We prevent this issue by disallowing non-string key nodes during parsing.
2016-11-18bplist: Remove misleading/redundant `else` from BPLIST_DATE case in ↵Gravatar Nikias Bassen1-4/+3
parse_bin_node
2016-11-18Improve plist_dict_set_item performance for large dictionaries with hash tableGravatar Nikias Bassen1-1/+1
2016-11-13bplist: Fix surrogate parsing range to include U+100000 - U+1FFFFFGravatar Nikias Bassen1-2/+2
2016-11-10bplist: Make sure to error out if allocation of `used_indexes` buffer in ↵Gravatar Filippo Bigarella1-0/+6
plist_from_bin() fails If the allocation fails, a lot of bad things can happen so we check the result and return accordingly. We also check that the multiplication used to calculate the buffer size doesn't overflow. Otherwise this could lead to an allocation of a very small buffer compared to what we need, ultimately leading to arbitrary writes later on.
2016-11-10bplist: Prevent out-of-bounds read in plist_from_bin() when parsing offset_tableGravatar Filippo Bigarella1-1/+9
offset_table_index is read from the file, so we have full control over it. This means we can point offset_table essentially anywhere we want, which can lead to an out-of-bounds read when it will be used later on.
2016-11-10bplist: Make sure the index in parse_bin_node_at_index() is actually within ↵Gravatar Filippo Bigarella1-4/+13
the offset table
2016-11-10bplist: Fix possible out-of-bounds reads in parse_bin_node() with proper ↵Gravatar Filippo Bigarella1-0/+21
bounds checking
2016-11-10bplist: Fix possible out-of-bounds read in parse_dict_node() with proper ↵Gravatar Filippo Bigarella1-2/+13
bounds checking
2016-10-22Remove libxml2 dependency in favor of custom XML parsingGravatar Nikias Bassen1-2/+1
2016-09-19Change internal storage of PLIST_DATE values from struct timeval to doubleGravatar Nikias Bassen1-9/+2
This removes the timeval union member from the plist_data_t structure. Since struct timeval is 2x64bit on 64bit platforms this member unnecessarily grew the union size to 16 bytes while a size of 8 bytes is sufficient. Also, on 32bit platforms struct timeval is only 2x32bit of size, limiting the range of possible time values. In addition the binary property list format also stores PLIST_DATE nodes as double.
2016-05-12bplist: Speed up plist_to_bin conversion for large plistsGravatar Nikias Bassen1-4/+7
Using a better hashing algorithm and a larger hash table the conversion is A LOT faster when processing large plists. Thanks to Xiao Deng for reporting this issue and suggesting a fix.
2015-02-05bplist: Refactor binary plist parsing in a recursive wayGravatar Nikias Bassen1-209/+167
2015-01-31bplist: Plug memory leaks caused by unused (and unfreed) bufferGravatar Nikias Bassen1-5/+0
When parsing binary plists with BPLIST_DICT or BPLIST_ARRAY nodes that are referenced multiple times in a particular file, a buffer was allocated that was not used, and also not freed, thus causing memory leaks.
2015-01-31bplist: Fix possible crash in plist_from_bin() caused by access to already ↵Gravatar Nikias Bassen1-3/+5
freed memory Given a specifically ordered binary plist the function plist_from_bin() would free BPLIST_DICT or BPLIST_ARRAY raw node data that is still required for parsing of following nodes. This commit addresses this issues by moving the memory free to the end of the parsing process.
2014-10-09bplist: Fix plist_from_bin() changing value nodes to key nodes in dictionariesGravatar Martin Szulecki1-11/+33
The parsing logic for binary dictionaries wrongly enforced the key type even on nodes that were already parsed as value nodes. This caused the resulting plist_t node tree to have key nodes instead of value nodes within dictionaries for some valid binary plists. This commit should also generally fixes parsing of binary plist files which use an efficient dictionary reference table.
2014-10-03Drop src/common.h and use byte order macros from config.h directlyGravatar Nikias Bassen1-11/+14
2014-10-03Avoid exporting non-public symbolsGravatar Nikias Bassen1-2/+2
2014-09-23bplist: Prevent crash in plist_from_bin() when parsing unusually structured ↵Gravatar Nikias Bassen1-1/+1
binary plist
2014-08-25Fixed memory leaks in new_xml_plist() and parse_real_node().Gravatar Aaron Burghardt1-0/+1
2014-08-06bplist: Silence compiler warning about 'always true' comparison due to type ↵Gravatar Nikias Bassen1-2/+6
mismatch
2014-05-23Handle signed vs. unsigned integer values correctlyGravatar Nikias Bassen1-2/+25
2014-05-18bplist: Fix memory leaking caused by unused nodes in plist_from_bin()Gravatar Nikias Bassen1-0/+9
2014-02-06bplist: prevent segmentation fault in plist_from_bin()Gravatar Nikias Bassen1-0/+3
2013-12-13bplist: make plist_utf8_to_utf16 static since it is only used internallyGravatar Nikias Bassen1-1/+1
2013-10-17UTF-16 surrogate pair fixGravatar shane1-4/+37
Handle UTF-16 surrogate pair conversion to/from UTF-8
2013-05-30bplist: use __FLOAT_WORD_ORDER__ instead of __VFP_FP__ for floating point ↵Gravatar Nikias Bassen1-1/+4
endianness detection
2012-09-16implemented handling of UID keyed encoding typeGravatar Nikias Bassen1-2/+58
2012-02-11bplist: fix invalid memory access in copy_plist_dataGravatar Nikias Bassen1-4/+4
2012-01-12fix compiler warningsGravatar Nikias Bassen1-8/+0
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