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Alanscut 2019-12-06 15:14:26 +08:00 committed by GitHub
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13 changed files with 280 additions and 39 deletions
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19
CMakeLists.txt
View File

@ -150,7 +150,13 @@ configure_file("${CMAKE_CURRENT_SOURCE_DIR}/library_config/libcjson.pc.in"
install(FILES cJSON.h DESTINATION "${CMAKE_INSTALL_FULL_INCLUDEDIR}/cjson")
install (FILES "${CMAKE_CURRENT_BINARY_DIR}/libcjson.pc" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/pkgconfig")
install(TARGETS "${CJSON_LIB}" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}" EXPORT "${CJSON_LIB}")
install(TARGETS "${CJSON_LIB}"
EXPORT "${CJSON_LIB}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}"
LIBRARY DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_FULL_BINDIR}"
INCLUDES DESTINATION "${CMAKE_INSTALL_FULL_INCLUDEDIR}"
)
if (BUILD_SHARED_AND_STATIC_LIBS)
install(TARGETS "${CJSON_LIB}-static" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}")
endif()
@ -187,7 +193,13 @@ if(ENABLE_CJSON_UTILS)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/library_config/libcjson_utils.pc.in"
"${CMAKE_CURRENT_BINARY_DIR}/libcjson_utils.pc" @ONLY)
install(TARGETS "${CJSON_UTILS_LIB}" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}" EXPORT "${CJSON_UTILS_LIB}")
install(TARGETS "${CJSON_UTILS_LIB}"
EXPORT "${CJSON_UTILS_LIB}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}"
LIBRARY DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_FULL_BINDIR}"
INCLUDES DESTINATION "${CMAKE_INSTALL_FULL_INCLUDEDIR}"
)
if (BUILD_SHARED_AND_STATIC_LIBS)
install(TARGETS "${CJSON_UTILS_LIB}-static" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}")
endif()
@ -242,6 +254,9 @@ if(ENABLE_CJSON_TEST)
DEPENDS ${TEST_CJSON})
endif()
#Create the uninstall target
add_custom_target(uninstall "${CMAKE_COMMAND}" -P "${PROJECT_SOURCE_DIR}/library_config/uninstall.cmake")
# Enable the use of locales
option(ENABLE_LOCALES "Enable the use of locales" ON)
if(ENABLE_LOCALES)

16
Makefile
View File

@ -24,6 +24,8 @@ INSTALL_LIBRARY_PATH = $(DESTDIR)$(PREFIX)/$(LIBRARY_PATH)
INSTALL ?= cp -a
CC = gcc -std=c89
# validate gcc version for use fstack-protector-strong
MIN_GCC_VERSION = "4.9"
GCC_VERSION := "`$(CC) -dumpversion`"
@ -34,6 +36,7 @@ else
CFLAGS += -fstack-protector
endif
PIC_FLAGS = -fPIC
R_CFLAGS = -fPIC -std=c89 -pedantic -Wall -Werror -Wstrict-prototypes -Wwrite-strings -Wshadow -Winit-self -Wcast-align -Wformat=2 -Wmissing-prototypes -Wstrict-overflow=2 -Wcast-qual -Wc++-compat -Wundef -Wswitch-default -Wconversion -Wfloat-equal $(CFLAGS)
uname := $(shell sh -c 'uname -s 2>/dev/null || echo false')
@ -98,13 +101,13 @@ $(CJSON_SHARED_VERSION): $(CJSON_OBJ)
$(CC) -shared -o $@ $< $(CJSON_SO_LDFLAG) $(LDFLAGS)
#cJSON_Utils
$(UTILS_SHARED_VERSION): $(UTILS_OBJ)
$(CC) -shared -o $@ $< $(UTILS_SO_LDFLAG) $(LDFLAGS)
$(CC) -shared -o $@ $< $(CJSON_OBJ) $(UTILS_SO_LDFLAG) $(LDFLAGS)
#objects
#cJSON
$(CJSON_OBJ): cJSON.c cJSON.h
#cJSON_Utils
$(UTILS_OBJ): cJSON_Utils.c cJSON_Utils.h
$(UTILS_OBJ): cJSON_Utils.c cJSON_Utils.h cJSON.h
#links .so -> .so.1 -> .so.1.0.0
@ -138,9 +141,8 @@ uninstall-cjson: uninstall-utils
$(RM) $(INSTALL_LIBRARY_PATH)/$(CJSON_SHARED)
$(RM) $(INSTALL_LIBRARY_PATH)/$(CJSON_SHARED_VERSION)
$(RM) $(INSTALL_LIBRARY_PATH)/$(CJSON_SHARED_SO)
rmdir $(INSTALL_LIBRARY_PATH)
$(RM) $(INSTALL_INCLUDE_PATH)/cJSON.h
rmdir $(INSTALL_INCLUDE_PATH)
#cJSON_Utils
uninstall-utils:
$(RM) $(INSTALL_LIBRARY_PATH)/$(UTILS_SHARED)
@ -148,7 +150,11 @@ uninstall-utils:
$(RM) $(INSTALL_LIBRARY_PATH)/$(UTILS_SHARED_SO)
$(RM) $(INSTALL_INCLUDE_PATH)/cJSON_Utils.h
uninstall: uninstall-utils uninstall-cjson
remove-dir:
$(if $(wildcard $(INSTALL_LIBRARY_PATH)/*.*),,rmdir $(INSTALL_LIBRARY_PATH))
$(if $(wildcard $(INSTALL_INCLUDE_PATH)/*.*),,rmdir $(INSTALL_INCLUDE_PATH))
uninstall: uninstall-utils uninstall-cjson remove-dir
clean:
$(RM) $(CJSON_OBJ) $(UTILS_OBJ) #delete object files

22
README.md
View File

@ -80,11 +80,13 @@ philosophy as JSON itself. Simple, dumb, out of the way.
There are several ways to incorporate cJSON into your project.
#### copying the source
Because the entire library is only one C file and one header file, you can just copy `cJSON.h` and `cJSON.c` to your projects source and start using it.
cJSON is written in ANSI C (C89) in order to support as many platforms and compilers as possible.
#### CMake
With CMake, cJSON supports a full blown build system. This way you get the most features. CMake with an equal or higher version than 2.8.5 is supported. With CMake it is recommended to do an out of tree build, meaning the compiled files are put in a directory separate from the source files. So in order to build cJSON with CMake on a Unix platform, make a `build` directory and run CMake inside it.
```
@ -102,6 +104,7 @@ make
And install it with `make install` if you want. By default it installs the headers `/usr/local/include/cjson` and the libraries to `/usr/local/lib`. It also installs files for pkg-config to make it easier to detect and use an existing installation of CMake. And it installs CMake config files, that can be used by other CMake based projects to discover the library.
You can change the build process with a list of different options that you can pass to CMake. Turn them on with `On` and off with `Off`:
* `-DENABLE_CJSON_TEST=On`: Enable building the tests. (on by default)
* `-DENABLE_CJSON_UTILS=On`: Enable building cJSON_Utils. (off by default)
* `-DENABLE_TARGET_EXPORT=On`: Enable the export of CMake targets. Turn off if it makes problems. (on by default)
@ -127,6 +130,7 @@ make DESTDIR=$pkgdir install
On Windows CMake is usually used to create a Visual Studio solution file by running it inside the Developer Command Prompt for Visual Studio, for exact steps follow the official documentation from CMake and Microsoft and use the online search engine of your choice. The descriptions of the the options above still generally apply, although not all of them work on Windows.
#### Makefile
**NOTE:** This Method is deprecated. Use CMake if at all possible. Makefile support is limited to fixing bugs.
If you don't have CMake available, but still have GNU make. You can use the makefile to build cJSON:
@ -137,9 +141,10 @@ Run this command in the directory with the source code and it will automatically
make all
```
If you want, you can install the compiled library to your system using `make install`. By default it will install the headers in `/usr/local/include/cjson` and the libraries in `/usr/local/lib`. But you can change this behavior by setting the `PREFIX` and `DESTDIR` variables: `make PREFIX=/usr DESTDIR=temp install`.
If you want, you can install the compiled library to your system using `make install`. By default it will install the headers in `/usr/local/include/cjson` and the libraries in `/usr/local/lib`. But you can change this behavior by setting the `PREFIX` and `DESTDIR` variables: `make PREFIX=/usr DESTDIR=temp install`. And uninstall them with: `make PREFIX=/usr DESTDIR=temp uninstall`.
### Including cJSON
If you installed it via CMake or the Makefile, you can include cJSON like this:
```c
@ -171,6 +176,7 @@ An item of this type represents a JSON value. The type is stored in `type` as a
To check the type of an item, use the corresponding `cJSON_Is...` function. It does a `NULL` check followed by a type check and returns a boolean value if the item is of this type.
The type can be one of the following:
* `cJSON_Invalid` (check with `cJSON_IsInvalid`): Represents an invalid item that doesn't contain any value. You automatically have this type if you set the item to all zero bytes.
* `cJSON_False` (check with `cJSON_IsFalse`): Represents a `false` boolean value. You can also check for boolean values in general with `cJSON_IsBool`.
* `cJSON_True` (check with `cJSON_IsTrue`): Represents a `true` boolean value. You can also check for boolean values in general with `cJSON_IsBool`.
@ -182,6 +188,7 @@ The type can be one of the following:
* `cJSON_Raw` (check with `cJSON_IsRaw`): Represents any kind of JSON that is stored as a zero terminated array of characters in `valuestring`. This can be used, for example, to avoid printing the same static JSON over and over again to save performance. cJSON will never create this type when parsing. Also note that cJSON doesn't check if it is valid JSON.
Additionally there are the following two flags:
* `cJSON_IsReference`: Specifies that the item that `child` points to and/or `valuestring` is not owned by this item, it is only a reference. So `cJSON_Delete` and other functions will only deallocate this item, not it's children/valuestring.
* `cJSON_StringIsConst`: This means that `string` points to a constant string. This means that `cJSON_Delete` and other functions will not try to deallocate `string`.
@ -193,6 +200,7 @@ Note that you have to delete them at some point, otherwise you will get a memory
**Important**: If you have added an item to an array or an object already, you **mustn't** delete it with `cJSON_Delete`. Adding it to an array or object transfers its ownership so that when that array or object is deleted, it gets deleted as well.
#### Basic types
* **null** is created with `cJSON_CreateNull`
* **booleans** are created with `cJSON_CreateTrue`, `cJSON_CreateFalse` or `cJSON_CreateBool`
* **numbers** are created with `cJSON_CreateNumber`. This will set both `valuedouble` and `valueint`. If the number is outside of the range of an integer, `INT_MAX` or `INT_MIN` are used for `valueint`
@ -203,7 +211,7 @@ Note that you have to delete them at some point, otherwise you will get a memory
You can create an empty array with `cJSON_CreateArray`. `cJSON_CreateArrayReference` can be used to create an array that doesn't "own" its content, so its content doesn't get deleted by `cJSON_Delete`.
To add items to an array, use `cJSON_AddItemToArray` to append items to the end.
Using `cJSON_AddItemReferenceToArray` an element can be added as a reference to another item, array or string. This means that `cJSON_Delete` will not delete that items `child` or `valuestring` properties, so no double frees are occuring if they are already used elsewhere.
Using `cJSON_AddItemReferenceToArray` an element can be added as a reference to another item, array or string. This means that `cJSON_Delete` will not delete that items `child` or `valuestring` properties, so no double frees are occurring if they are already used elsewhere.
To insert items in the middle, use `cJSON_InsertItemInArray`. It will insert an item at the given 0 based index and shift all the existing items to the right.
If you want to take an item out of an array at a given index and continue using it, use `cJSON_DetachItemFromArray`, it will return the detached item, so be sure to assign it to a pointer, otherwise you will have a memory leak.
@ -221,7 +229,7 @@ Because an array is stored as a linked list, iterating it via index is inefficie
You can create an empty object with `cJSON_CreateObject`. `cJSON_CreateObjectReference` can be used to create an object that doesn't "own" its content, so its content doesn't get deleted by `cJSON_Delete`.
To add items to an object, use `cJSON_AddItemToObject`. Use `cJSON_AddItemToObjectCS` to add an item to an object with a name that is a constant or reference (key of the item, `string` in the `cJSON` struct), so that it doesn't get freed by `cJSON_Delete`.
Using `cJSON_AddItemReferenceToArray` an element can be added as a reference to another object, array or string. This means that `cJSON_Delete` will not delete that items `child` or `valuestring` properties, so no double frees are occuring if they are already used elsewhere.
Using `cJSON_AddItemReferenceToArray` an element can be added as a reference to another object, array or string. This means that `cJSON_Delete` will not delete that items `child` or `valuestring` properties, so no double frees are occurring if they are already used elsewhere.
If you want to take an item out of an object, use `cJSON_DetachItemFromObjectCaseSensitive`, it will return the detached item, so be sure to assign it to a pointer, otherwise you will have a memory leak.
@ -272,6 +280,7 @@ If you have a rough idea of how big your resulting string will be, you can use `
These dynamic buffer allocations can be completely avoided by using `cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format)`. It takes a buffer to a pointer to print to and it's length. If the length is reached, printing will fail and it returns `0`. In case of success, `1` is returned. Note that you should provide 5 bytes more than is actually needed, because cJSON is not 100% accurate in estimating if the provided memory is enough.
### Example
In this example we want to build and parse the following JSON:
```json
@ -295,7 +304,9 @@ In this example we want to build and parse the following JSON:
```
#### Printing
Let's build the above JSON and print it to a string:
```c
//create a monitor with a list of supported resolutions
//NOTE: Returns a heap allocated string, you are required to free it after use.
@ -326,7 +337,7 @@ char* create_monitor(void)
goto end;
}
/* after creation was successful, immediately add it to the monitor,
* thereby transfering ownership of the pointer to it */
* thereby transferring ownership of the pointer to it */
cJSON_AddItemToObject(monitor, "name", name);
resolutions = cJSON_CreateArray();
@ -373,6 +384,7 @@ end:
```
Alternatively we can use the `cJSON_Add...ToObject` helper functions to make our lifes a little easier:
```c
//NOTE: Returns a heap allocated string, you are required to free it after use.
char *create_monitor_with_helpers(void)
@ -428,6 +440,7 @@ end:
```
#### Parsing
In this example we will parse a JSON in the above format and check if the monitor supports a Full HD resolution while printing some diagnostic output:
```c
@ -514,6 +527,7 @@ cJSON doesn't support arrays and objects that are nested too deeply because this
In general cJSON is **not thread safe**.
However it is thread safe under the following conditions:
* `cJSON_GetErrorPtr` is never used (the `return_parse_end` parameter of `cJSON_ParseWithOpts` can be used instead)
* `cJSON_InitHooks` is only ever called before using cJSON in any threads.
* `setlocale` is never called before all calls to cJSON functions have returned.

24
cJSON.c
View File

@ -79,7 +79,7 @@ CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void)
return (const char*) (global_error.json + global_error.position);
}
CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item) {
CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item) {
if (!cJSON_IsString(item)) {
return NULL;
}
@ -132,7 +132,7 @@ typedef struct internal_hooks
} internal_hooks;
#if defined(_MSC_VER)
/* work around MSVC error C2322: '...' address of dillimport '...' is not static */
/* work around MSVC error C2322: '...' address of dllimport '...' is not static */
static void * CJSON_CDECL internal_malloc(size_t size)
{
return malloc(size);
@ -493,9 +493,9 @@ static cJSON_bool print_number(const cJSON * const item, printbuffer * const out
double d = item->valuedouble;
int length = 0;
size_t i = 0;
unsigned char number_buffer[26]; /* temporary buffer to print the number into */
unsigned char number_buffer[26] = {0}; /* temporary buffer to print the number into */
unsigned char decimal_point = get_decimal_point();
double test;
double test = 0.0;
if (output_buffer == NULL)
{
@ -1205,20 +1205,20 @@ CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON
return (char*)p.buffer;
}
CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buf, const int len, const cJSON_bool fmt)
CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format)
{
printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } };
if ((len < 0) || (buf == NULL))
if ((length < 0) || (buffer == NULL))
{
return false;
}
p.buffer = (unsigned char*)buf;
p.length = (size_t)len;
p.buffer = (unsigned char*)buffer;
p.length = (size_t)length;
p.offset = 0;
p.noalloc = true;
p.format = fmt;
p.format = format;
p.hooks = global_hooks;
return print_value(item, &p);
@ -2296,12 +2296,12 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void)
return item;
}
CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool b)
CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean)
{
cJSON *item = cJSON_New_Item(&global_hooks);
if(item)
{
item->type = b ? cJSON_True : cJSON_False;
item->type = boolean ? cJSON_True : cJSON_False;
}
return item;
@ -2530,7 +2530,7 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count)
return a;
}
CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count)
CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count)
{
size_t i = 0;
cJSON *n = NULL;

21
cJSON.h
View File

@ -165,7 +165,7 @@ CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON
/* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */
CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format);
/* Delete a cJSON entity and all subentities. */
CJSON_PUBLIC(void) cJSON_Delete(cJSON *c);
CJSON_PUBLIC(void) cJSON_Delete(cJSON *item);
/* Returns the number of items in an array (or object). */
CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array);
@ -179,7 +179,7 @@ CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *st
CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
/* Check if the item is a string and return its valuestring */
CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item);
CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item);
/* These functions check the type of an item */
CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item);
@ -208,16 +208,17 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void);
/* Create a string where valuestring references a string so
* it will not be freed by cJSON_Delete */
CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string);
/* Create an object/arrray that only references it's elements so
/* Create an object/array that only references it's elements so
* they will not be freed by cJSON_Delete */
CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child);
CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child);
/* These utilities create an Array of count items. */
/* These utilities create an Array of count items.
* The parameter count cannot be greater than the number of elements in the number array, otherwise array access will be out of bounds.*/
CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count);
/* Append item to the specified array/object. */
CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item);
@ -230,7 +231,7 @@ CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJ
CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);
/* Remove/Detatch items from Arrays/Objects. */
/* Remove/Detach items from Arrays/Objects. */
CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item);
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which);
CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which);
@ -249,13 +250,15 @@ CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const ch
/* Duplicate a cJSON item */
CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse);
/* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will
need to be released. With recurse!=0, it will duplicate any children connected to the item.
The item->next and ->prev pointers are always zero on return from Duplicate. */
* need to be released. With recurse!=0, it will duplicate any children connected to the item.
* The item->next and ->prev pointers are always zero on return from Duplicate. */
/* Recursively compare two cJSON items for equality. If either a or b is NULL or invalid, they will be considered unequal.
* case_sensitive determines if object keys are treated case sensitive (1) or case insensitive (0) */
CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive);
/* Minify a strings, remove blank characters(such as ' ', '\t', '\r', '\n') from strings.
* The input pointer json cannot point to a read-only address area, such as a string constant,
* but should point to a readable and writable adress area. */
CJSON_PUBLIC(void) cJSON_Minify(char *json);
/* Helper functions for creating and adding items to an object at the same time.

1
cJSON_Utils.c
View File

@ -224,6 +224,7 @@ CJSON_PUBLIC(char *) cJSONUtils_FindPointerFromObjectTo(const cJSON * const obje
if (child_index > ULONG_MAX)
{
cJSON_free(target_pointer);
cJSON_free(full_pointer);
return NULL;
}
sprintf((char*)full_pointer, "/%lu%s", (unsigned long)child_index, target_pointer); /* /<array_index><path> */

6
fuzzing/CMakeLists.txt
View File

@ -26,3 +26,9 @@ if (ENABLE_FUZZING)
endif()
if(ENABLE_CJSON_TEST)
ADD_EXECUTABLE(fuzz_main fuzz_main.c cjson_read_fuzzer.c)
TARGET_LINK_LIBRARIES(fuzz_main cjson)
endif()

77
fuzzing/cjson_read_fuzzer.c Normal file
View File

@ -0,0 +1,77 @@
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#ifdef __cplusplus
extern "C" {
#endif
#include "../cJSON.h"
int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size); /* required by C89 */
int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
{
cJSON *json;
size_t offset = 4;
unsigned char *copied;
char *printed_json = NULL;
int minify, require_termination, formatted, buffered;
if(size <= offset) return 0;
if(data[size-1] != '\0') return 0;
if(data[0] != '1' && data[0] != '0') return 0;
if(data[1] != '1' && data[1] != '0') return 0;
if(data[2] != '1' && data[2] != '0') return 0;
if(data[3] != '1' && data[3] != '0') return 0;
minify = data[0] == '1' ? 1 : 0;
require_termination = data[1] == '1' ? 1 : 0;
formatted = data[2] == '1' ? 1 : 0;
buffered = data[3] == '1' ? 1 : 0;
json = cJSON_ParseWithOpts((const char*)data + offset, NULL, require_termination);
if(json == NULL) return 0;
if(buffered)
{
printed_json = cJSON_PrintBuffered(json, 1, formatted);
}
else
{
/* unbuffered printing */
if(formatted)
{
printed_json = cJSON_Print(json);
}
else
{
printed_json = cJSON_PrintUnformatted(json);
}
}
if(printed_json != NULL) free(printed_json);
if(minify)
{
copied = (unsigned char*)malloc(size);
if(copied == NULL) return 0;
memcpy(copied, data, size);
cJSON_Minify((char*)copied + offset);
free(copied);
}
cJSON_Delete(json);
return 0;
}
#ifdef __cplusplus
}
#endif

54
fuzzing/fuzz_main.c Normal file
View File

@ -0,0 +1,54 @@
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size); /* required by C89 */
/* fuzz target entry point, works without libFuzzer */
int main(int argc, char **argv)
{
FILE *f;
char *buf = NULL;
long siz_buf;
if(argc < 2)
{
fprintf(stderr, "no input file\n");
goto err;
}
f = fopen(argv[1], "rb");
if(f == NULL)
{
fprintf(stderr, "error opening input file %s\n", argv[1]);
goto err;
}
fseek(f, 0, SEEK_END);
siz_buf = ftell(f);
rewind(f);
if(siz_buf < 1) goto err;
buf = (char*)malloc((size_t)siz_buf);
if(buf == NULL)
{
fprintf(stderr, "malloc() failed\n");
goto err;
}
if(fread(buf, (size_t)siz_buf, 1, f) != 1)
{
fprintf(stderr, "fread() failed\n");
goto err;
}
(void)LLVMFuzzerTestOneInput((uint8_t*)buf, (size_t)siz_buf);
err:
free(buf);
return 0;
}

18
fuzzing/ossfuzz.sh Executable file
View File

@ -0,0 +1,18 @@
#!/bin/bash -eu
# This script is meant to be run by
# https://github.com/google/oss-fuzz/blob/master/projects/cjson/Dockerfile
mkdir build
cd build
cmake -DBUILD_SHARED_LIBS=OFF -DENABLE_CJSON_TEST=OFF ..
make -j$(nproc)
$CXX $CXXFLAGS $SRC/cjson/fuzzing/cjson_read_fuzzer.c -I. \
-o $OUT/cjson_read_fuzzer \
$LIB_FUZZING_ENGINE $SRC/cjson/build/libcjson.a
find $SRC/cjson/fuzzing/inputs -name "*" | \
xargs zip $OUT/cjson_read_fuzzer_seed_corpus.zip
cp $SRC/cjson/fuzzing/json.dict $OUT/cjson_read_fuzzer.dict

27
library_config/uninstall.cmake Normal file
View File

@ -0,0 +1,27 @@
cmake_minimum_required(VERSION 2.8.5)
set(MANIFEST "${CMAKE_CURRENT_BINARY_DIR}/install_manifest.txt")
if(NOT EXISTS ${MANIFEST})
message(FATAL_ERROR "Cannot find install mainfest: ${MANIFEST}")
endif()
file(STRINGS ${MANIFEST} files)
foreach(file ${files})
if(EXISTS ${file} OR IS_SYMLINK ${file})
message(STATUS "Removing: ${file}")
execute_process(COMMAND rm -f ${file}
RESULT_VARIABLE result
OUTPUT_QUIET
ERROR_VARIABLE stderr
ERROR_STRIP_TRAILING_WHITESPACE
)
if(NOT ${result} EQUAL 0)
message(FATAL_ERROR "${stderr}")
endif()
else()
message(STATUS "Does-not-exist: ${file}")
endif()
endforeach(file)

22
tests/print_number.c
View File

@ -27,6 +27,8 @@
static void assert_print_number(const char *expected, double input)
{
unsigned char printed[1024];
unsigned char new_buffer[26];
unsigned int i = 0;
cJSON item[1];
printbuffer buffer = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } };
buffer.buffer = printed;
@ -34,11 +36,29 @@ static void assert_print_number(const char *expected, double input)
buffer.offset = 0;
buffer.noalloc = true;
buffer.hooks = global_hooks;
buffer.buffer = new_buffer;
memset(item, 0, sizeof(item));
memset(new_buffer, 0, sizeof(new_buffer));
cJSON_SetNumberValue(item, input);
TEST_ASSERT_TRUE_MESSAGE(print_number(item, &buffer), "Failed to print number.");
/* In MinGW or visual studio(before 2015),the exponten is represented using three digits,like:"1e-009","1e+017"
* remove extra "0" to output "1e-09" or "1e+17",which makes testcase PASS */
for(i = 0;i <sizeof(new_buffer);i++)
{
if(i >3 && new_buffer[i] =='0')
{
if((new_buffer[i-3] =='e' && new_buffer[i-2] == '-' && new_buffer[i] =='0') ||(new_buffer[i-2] =='e' && new_buffer[i-1] =='+'))
{
while(new_buffer[i] !='\0')
{
new_buffer[i] = new_buffer[i+1];
i++;
}
}
}
}
TEST_ASSERT_EQUAL_STRING_MESSAGE(expected, buffer.buffer, "Printed number is not as expected.");
}

12
tests/unity/src/unity.c
View File

@ -268,14 +268,14 @@ void UnityPrintFloat(const UNITY_DOUBLE input_number)
UNITY_DOUBLE number = input_number;
/* print minus sign (including for negative zero) */
if (number < 0.0f || (number == 0.0f && 1.0f / number < 0.0f))
if (number < (double)0.0f || (number == (double)0.0f && (double)1.0f / number < (double)0.0f))
{
UNITY_OUTPUT_CHAR('-');
number = -number;
}
/* handle zero, NaN, and +/- infinity */
if (number == 0.0f) UnityPrint("0");
if (number == (double)0.0f) UnityPrint("0");
else if (isnan(number)) UnityPrint("nan");
else if (isinf(number)) UnityPrint("inf");
else
@ -286,10 +286,10 @@ void UnityPrintFloat(const UNITY_DOUBLE input_number)
char buf[16];
/* scale up or down by powers of 10 */
while (number < 100000.0f / 1e6f) { number *= 1e6f; exponent -= 6; }
while (number < 100000.0f) { number *= 10.0f; exponent--; }
while (number > 1000000.0f * 1e6f) { number /= 1e6f; exponent += 6; }
while (number > 1000000.0f) { number /= 10.0f; exponent++; }
while (number < (double)(100000.0f / 1e6f)) { number *= (double)1e6f; exponent -= 6; }
while (number < (double)100000.0f) { number *= (double)10.0f; exponent--; }
while (number > (double)(1000000.0f * 1e6f)) { number /= (double)1e6f; exponent += 6; }
while (number > (double)1000000.0f) { number /= (double)10.0f; exponent++; }
/* round to nearest integer */
n = ((UNITY_INT32)(number + number) + 1) / 2;