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/******************************************************************************
*
* Project: proj.4
* Purpose: Fuzzer
* Author: Even Rouault, even.rouault at spatialys.com
*
******************************************************************************
* Copyright (c) 2017, Even Rouault <even.rouault at spatialys.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#define ACCEPT_USE_OF_DEPRECATED_PROJ_API_H
#include "proj.h"
#include "proj_api.h"
/* Standalone build:
g++ -g -std=c++11 standard_fuzzer.cpp -o standard_fuzzer -fvisibility=hidden -DSTANDALONE ../../src/.libs/libproj.a -lpthread -lsqlite3 -I../../src -I../../include
*/
extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv);
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len);
int LLVMFuzzerInitialize(int* /*argc*/, char*** argv)
{
const char* argv0 = (*argv)[0];
char* path = pj_strdup(argv0);
char* lastslash = strrchr(path, '/');
if( lastslash )
{
*lastslash = '\0';
setenv("PROJ_LIB", path, 1);
}
else
{
setenv("PROJ_LIB", ".", 1);
}
free(path);
return 0;
}
int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len)
{
if( len > 1000 )
{
#ifdef STANDALONE
fprintf(stderr, "Input too large\n");
#endif
return 0;
}
/* We expect the blob to be 3 lines: */
/* source proj string\ndestination proj string\nx y */
char* buf_dup = (char*)malloc(len+1);
memcpy(buf_dup, buf, len);
buf_dup[len] = 0;
char* first_line = buf_dup;
char* first_newline = strchr(first_line, '\n');
if( !first_newline )
{
free(buf_dup);
return 0;
}
first_newline[0] = 0;
char* second_line = first_newline + 1;
char* second_newline = strchr(second_line, '\n');
if( !second_newline )
{
free(buf_dup);
return 0;
}
second_newline[0] = 0;
char* third_line = second_newline + 1;
projPJ pj_src = pj_init_plus(first_line);
if( !pj_src )
{
free(buf_dup);
return 0;
}
projPJ pj_dst = pj_init_plus(second_line);
if( !pj_dst )
{
free(buf_dup);
pj_free(pj_src);
proj_cleanup();
return 0;
}
double x = 0, y = 0, z = 9;
bool from_binary = false;
bool has_z = false;
if( strncmp(third_line, "BINARY_2D:", strlen("BINARY_2D:")) == 0 &&
third_line - first_line + strlen("BINARY_2D:") + 2 * sizeof(double) <= len )
{
from_binary = true;
memcpy(&x, third_line + strlen("BINARY_2D:"), sizeof(double));
memcpy(&y, third_line + strlen("BINARY_2D:") + sizeof(double), sizeof(double));
}
else if( strncmp(third_line, "BINARY_3D:", strlen("BINARY_3D:")) == 0 &&
third_line - first_line + strlen("BINARY_3D:") + 3 * sizeof(double) <= len )
{
from_binary = true;
has_z = true;
memcpy(&x, third_line + strlen("BINARY_3D:"), sizeof(double));
memcpy(&y, third_line + strlen("BINARY_3D:") + sizeof(double), sizeof(double));
memcpy(&z, third_line + strlen("BINARY_3D:") + 2 * sizeof(double), sizeof(double));
}
else if( sscanf(third_line, "%lf %lf", &x, &y) != 2 )
{
free(buf_dup);
pj_free(pj_src);
pj_free(pj_dst);
proj_cleanup();
return 0;
}
#ifdef STANDALONE
fprintf(stderr, "src=%s\n", first_line);
fprintf(stderr, "dst=%s\n", second_line);
if( from_binary )
{
if( has_z )
fprintf(stderr, "coord (from binary)=%.18g %.18g %.18g\n", x, y, z);
else
fprintf(stderr, "coord (from binary)=%.18g %.18g\n", x, y);
}
else
fprintf(stderr, "coord=%s\n", third_line);
#endif
if( has_z )
pj_transform( pj_src, pj_dst, 1, 0, &x, &y, &z );
else
pj_transform( pj_src, pj_dst, 1, 0, &x, &y, NULL );
free(buf_dup);
pj_free(pj_src);
pj_free(pj_dst);
proj_cleanup();
return 0;
}
#ifdef STANDALONE
int main(int argc, char* argv[])
{
if( argc < 2 )
{
const char str[] =
"+proj=longlat +datum=WGS84 +nodefs\n+proj=longlat +datum=WGS84 +nodefs\n2 49";
int ret = LLVMFuzzerTestOneInput((const uint8_t*)(str), sizeof(str) - 1);
if( ret )
return ret;
const char str2[] =
"+proj=longlat +datum=WGS84 +nodefs\n+proj=longlat +datum=WGS84 +nodefs\nBINARY_2D:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF";
ret = LLVMFuzzerTestOneInput((const uint8_t*)(str2), sizeof(str2) - 1);
if( ret )
return ret;
const char str3[] =
"+proj=longlat +datum=WGS84 +nodefs\n+proj=longlat +datum=WGS84 +nodefs\nBINARY_3D:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF\x00\x00\x00\x00\x00\x00\x00\x00";
ret = LLVMFuzzerTestOneInput((const uint8_t*)(str3), sizeof(str3) - 1);
if( ret )
return ret;
return 0;
}
else
{
int nRet = 0;
void* buf = NULL;
int nLen = 0;
FILE* f = fopen(argv[1], "rb");
if( !f )
{
fprintf(stderr, "%s does not exist.\n", argv[1]);
exit(1);
}
fseek(f, 0, SEEK_END);
nLen = (int)ftell(f);
fseek(f, 0, SEEK_SET);
buf = malloc(nLen);
if( !buf )
{
fprintf(stderr, "malloc failed.\n");
fclose(f);
exit(1);
}
fread(buf, nLen, 1, f);
fclose(f);
nRet = LLVMFuzzerTestOneInput((const uint8_t*)(buf), nLen);
free(buf);
return nRet;
}
}
#endif // STANDALONE
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