0.13.1 (up to commit 0f814e5, 2018/03/04) ========================================= * Bump the major version of the .so library generated up to 4.0 to avoid conflicts because some downstream packagers of json-c had already done their own bump to ".so.3" for a much older 0.12 release. * Add const size_t json_c_object_sizeof() * Avoid invalid free (and thus a segfault) when ref_count gets < 0 * PR#394: fix handling of custom double formats that include a ".0" * Avoid uninitialized variable warnings in json_object_object_foreach * Issue #396: fix build for certain uClibc based systems. * Add a top level fuzz directory for fuzzers run by OSS-Fuzz 0.13 (up to commit 5dae561, 2017/11/29) ================================= This release, being three and a half years after the 0.12 branch (f84d9c), has quite a number of changes included. The following is a sampling of the most significant ones. Since the 0.12 release, 250 issues and pull requests have been closed. See issues_closed_for_0.13.md for a complete list. Deprecated and removed features: -------------------------------- * All internal use of bits.h has been eliminated. The file will be removed. Do not use: hexdigit(), error_ptr(), error_descrition() and it_error() * lh_abort() is deprecated. It will be removed. Behavior changes: ----------------- * Tighten the number parsing algorithm to raise errors instead of truncating the results. For example 12.3.4 or 2015-01-15, which now return null. See commit 99d8fc * Use size_t for array length and size. Platforms where sizeof(size_t) != sizeof(int) may not be backwards compatible See commits 45c56b, 92e9a5 and others. * Check for failue when allocating memory, returning NULL and errno=ENOMEM. See commit 2149a04. * Change json_object_object_add() return type from void to int, and will return -1 on failures, instead of exiting. (Note: this is not an ABI change) New features: ------------- * We're aiming to follow RFC 7159 now. * Add a couple of additional option to json_object_to_json_string_ext: JSON_C_TO_STRING_PRETTY_TAB JSON_C_TO_STRING_NOSLASHESCAPE * Add a json_object_object_add_ex() function to allow for performance improvements when certain constraints are known to be true. * Make serialization format of doubles configurable, in two different ways: Call json_object_set_serializer with json_object_double_to_json_string and a custom format on each double object, or Call json_c_set_serialization_double_format() to set a global or thread-wide format. * Add utility function for comparing json_objects - json_object_equal() * Add a way to copy entire object trees: json_object_deep_copy() * Add json_object_set_ function to modify the value of existing json_object's without the need to recreate them. Also add a json_object_int_inc function to adjust an int's value. * Add support for JSON pointer, RFC 6901. See json_pointer.h * Add a json_util_get_last_err() function to retrieve the string describing the cause of errors, instead of printing to stderr. * Add perllike hash function for strings, and json_global_set_string_hash() 8f8d03d * Add a json_c_visit() function to provide a way to iterate over a tree of json-c objects. Notable bug fixes and other improvements: ----------------------------------------- * Make reference increment and decrement atomic to allow passing json objects between threads. * Fix json_object_object_foreach to avoid uninitialized variable warnings. * Improve performance by removing unneeded data items from hashtable code and reducing duplicate hash computation. * Improve performance by storing small strings inside json_object * Improve performance of json_object_to_json_string by removing variadic printf. commit 9ff0f49 * Issue #371: fix parsing of "-Infinity", and avoid needlessly copying the input when doing so. * Fix stack buffer overflow in json_object_double_to_json_string_format() - commit 2c2deb87 * Fix various potential null ptr deref and int32 overflows * Issue #332: fix a long-standing bug in array_list_put_idx() where it would attempt to free previously free'd entries due to not checking the current array length. * Issue #195: use uselocale() instead of setlocale() in json_tokener to behave better in threaded environments. * Issue #275: fix out of bounds read when handling unicode surrogate pairs. * Ensure doubles that happen to be a whole number are emitted with ".0" - commit ca7a19 * PR#331: for Visual Studio, use a snprintf/vsnprintf wrapper that ensures the string is terminated. * Fix double to int cast overflow in json_object_get_int64. * Clamp double to int32 when narrowing in json_object_get_int. * Use strtoll() to parse ints - instead of sscanf * Miscellaneous smaller changes, including removing unused variables, fixing warning about uninitialized variables adding const qualifiers, reformatting code, etc... Build changes: -------------- * Add Appveyor and Travis build support * Switch to using CMake when building on Windows with Visual Studio. A dynamic .dll is generated instead of a .lib config.h is now generated, config.h.win32 should no longer be manually copied * Add support for MacOS through CMake too. * Enable silent build by default * Link against libm when needed * Add support for building with AddressSanitizer * Add support for building with Clang * Add a --enable-threading configure option, and only use the (slower) __sync_add_and_fetch()/__sync_sub_and_fetch() function when it is specified. List of new functions added: ---------------------------- ### json_object.h * array_list_bsearch() * array_list_del_idx() * json_object_to_json_string_length() * json_object_get_userdata() * json_object_set_userdata() * json_object_object_add_ex() * json_object_array_bsearch() * json_object_array_del_idx() * json_object_set_boolean() * json_object_set_int() * json_object_int_inc() * json_object_set_int64() * json_c_set_serialization_double_format() * json_object_double_to_json_string() * json_object_set_double() * json_object_set_string() * json_object_set_string_len() * json_object_equal() * json_object_deep_copy() ### json_pointer.h * json_pointer_get() * json_pointer_getf() * json_pointer_set() * json_pointer_setf() ### json_util.h * json_object_from_fd() * json_object_to_fd() * json_util_get_last_err() ### json_visit.h * json_c_visit() ### linkhash.h * json_global_set_string_hash() * lh_table_resize() ### printbuf.h * printbuf_strappend() 0.12.1 ====== * Minimal changes to address compile issues. 0.12 ==== * Address security issues: * CVE-2013-6371: hash collision denial of service * CVE-2013-6370: buffer overflow if size_t is larger than int * Avoid potential overflow in json_object_get_double * Eliminate the mc_abort() function and MC_ABORT macro. * Make the json_tokener_errors array local. It has been deprecated for a while, and json_tokener_error_desc() should be used instead. * change the floating point output format to %.17g so values with more than 6 digits show up in the output. * Remove the old libjson.so name compatibility support. The library is only created as libjson-c.so now and headers are only installed into the ${prefix}/json-c directory. * When supported by the linker, add the -Bsymbolic-functions flag. * Various changes to fix the build on MSVC. * Make strict mode more strict: * number must not start with 0 * no single-quote strings * no comments * trailing char not allowed * only allow lowercase literals * Added a json_object_new_double_s() convenience function to allow an exact string representation of a double to be specified when creating the object and use it in json_tokener_parse_ex() so a re-serialized object more exactly matches the input. * Add support NaN and Infinity 0.11 ==== * IMPORTANT: the name of the library has changed to libjson-c.so and the header files are now in include/json-c. The pkgconfig name has also changed from json to json-c. You should change your build to use appropriate -I and -l options. A compatibility shim is in place so builds using the old name will continue to work, but that will be removed in the next release. * Maximum recursion depth is now a runtime option. json_tokener_new() is provided for compatibility. json_tokener_new_ex(depth) * Include json_object_iterator.h in the installed headers. * Add support for building on Android. * Rewrite json_object_object_add to replace just the value if the key already exists so keys remain valid. * Make it safe to delete keys while iterating with the json_object_object_foreach macro. * Add a json_set_serializer() function to allow the string output of a json_object to be customized. * Make float parsing locale independent. * Add a json_tokener_set_flags() function and a JSON_TOKENER_STRICT flag. * Enable -Werror when building. * speed improvements to parsing 64-bit integers on systems with working sscanf * Add a json_object_object_length function. * Fix a bug (buffer overrun) when expanding arrays to more than 64 entries. 0.10 ==== * Add a json_object_to_json_string_ext() function to allow output to be formatted in a more human readable form. * Add json_object_object_get_ex(), a NULL-safe get object method, to be able to distinguish between a key not present and the value being NULL. * Add an alternative iterator implementation, see json_object_iterator.h * Make json_object_iter public to enable external use of the json_object_object_foreachC macro. * Add a printbuf_memset() function to provide an effecient way to set and append things like whitespace indentation. * Adjust json_object_is_type and json_object_get_type so they return json_type_null for NULL objects and handle NULL passed to json_objct_object_get(). * Rename boolean type to json_bool. * Fix various compile issues for Visual Studio and MinGW. * Allow json_tokener_parse_ex() to be re-used to parse multiple object. Also, fix some parsing issues with capitalized hexadecimal numbers and number in E notation. * Add json_tokener_get_error() and json_tokener_error_desc() to better encapsulate the process of retrieving errors while parsing. * Various improvements to the documentation of many functions. * Add new json_object_array_sort() function. * Fix a bug in json_object_get_int(), which would incorrectly return 0 when called on a string type object. Eric Haszlakiewicz * Add a json_type_to_name() function. Eric Haszlakiewicz * Add a json_tokener_parse_verbose() function. Jehiah Czebotar * Improve support for null bytes within JSON strings. Jehiah Czebotar * Fix file descriptor leak if memory allocation fails in json_util Zachary Blair, zack_blair at hotmail dot com * Add int64 support. Two new functions json_object_net_int64 and json_object_get_int64. Binary compatibility preserved. Eric Haszlakiewicz, EHASZLA at transunion com Rui Miguel Silva Seabra, rms at 1407 dot org * Fix subtle bug in linkhash where lookup could hang after all slots were filled then successively freed. Spotted by Jean-Marc Naud, j dash m at newtraxtech dot com * Make json_object_from_file take const char *filename Spotted by Vikram Raj V, vsagar at attinteractive dot com * Add handling of surrogate pairs (json_tokener.c, test4.c, Makefile.am) Brent Miller, bdmiller at yahoo dash inc dot com * Correction to comment describing printbuf_memappend in printbuf.h Brent Miller, bdmiller at yahoo dash inc dot com 0.9 === * Add README.html README-WIN32.html config.h.win32 to Makefile.am Michael Clark, * Add const qualifier to the json_tokener_parse functions Eric Haszlakiewicz, EHASZLA at transunion dot com * Rename min and max so we can never clash with C or C++ std library Ian Atha, thatha at yahoo dash inc dot com * Fix any noticeable spelling or grammar errors. * Make sure every va_start has a va_end. * Check all pointers for validity. Erik Hovland, erik at hovland dot org * Fix json_object_get_boolean to return false for empty string Spotted by Vitaly Kruglikov, Vitaly dot Kruglikov at palm dot com * optimizations to json_tokener_parse_ex(), printbuf_memappend() Brent Miller, bdmiller at yahoo dash inc dot com * Disable REFCOUNT_DEBUG by default in json_object.c * Don't use this as a variable, so we can compile with a C++ compiler * Add casts from void* to type of assignment when using malloc * Add #ifdef __cplusplus guards to all of the headers * Add typedefs for json_object, json_tokener, array_list, printbuf, lh_table Michael Clark, * Null pointer dereference fix. Fix json_object_get_boolean strlen test to not return TRUE for zero length string. Remove redundant includes. Erik Hovland, erik at hovland dot org * Fixed warning reported by adding -Wstrict-prototypes -Wold-style-definition to the compilatin flags. Dotan Barak, dotanba at gmail dot com * Add const correctness to public interfaces Gerard Krol, g dot c dot krol at student dot tudelft dot nl 0.8 === * Add va_end for every va_start Dotan Barak, dotanba at gmail dot com * Add macros to enable compiling out debug code Geoffrey Young, geoff at modperlcookbook dot org * Fix bug with use of capital E in numbers with exponents Mateusz Loskot, mateusz at loskot dot net * Add stddef.h include * Patch allows for json-c compile with -Werror and not fail due to -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations Geoffrey Young, geoff at modperlcookbook dot org 0.7 === * Add escaping of backslash to json output * Add escaping of foward slash on tokenizing and output * Changes to internal tokenizer from using recursion to using a depth state structure to allow incremental parsing 0.6 === * Fix bug in escaping of control characters Johan Björklund, johbjo09 at kth dot se * Remove include "config.h" from headers (should only be included from .c files) Michael Clark 0.5 === * Make headers C++ compatible by change *this to *obj * Add ifdef C++ extern "C" to headers * Use simpler definition of min and max in bits.h Larry Lansing, llansing at fuzzynerd dot com * Remove automake 1.6 requirement * Move autogen commands into autogen.sh. Update README * Remove error pointer special case for Windows * Change license from LGPL to MIT Michael Clark 0.4 === * Fix additional error case in object parsing * Add back sign reversal in nested object parse as error pointer value is negative, while error value is positive. Michael Clark 0.3 === * fix pointer arithmetic bug for error pointer check in is_error() macro * fix type passed to printbuf_memappend in json_tokener * update autotools bootstrap instructions in README Michael Clark 0.2 === * printbuf.c - C. Watford (christopher.watford@gmail.com) Added a Win32/Win64 compliant implementation of vasprintf * debug.c - C. Watford (christopher.watford@gmail.com) Removed usage of vsyslog on Win32/Win64 systems, needs to be handled by a configure script * json_object.c - C. Watford (christopher.watford@gmail.com) Added scope operator to wrap usage of json_object_object_foreach, this needs to be rethought to be more ANSI C friendly * json_object.h - C. Watford (christopher.watford@gmail.com) Added Microsoft C friendly version of json_object_object_foreach * json_tokener.c - C. Watford (christopher.watford@gmail.com) Added a Win32/Win64 compliant implementation of strndup * json_util.c - C. Watford (christopher.watford@gmail.com) Added cast and mask to suffice size_t v. unsigned int conversion correctness * json_tokener.c - sign reversal issue on error info for nested object parse spotted by Johan Björklund (johbjo09 at kth.se) * json_object.c - escape " in json_escape_str * Change to automake and libtool to build shared and static library Michael Clark 0.1 === * initial release