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62dc12aacb
> Multiplication result converted to larger type > A multiplication result that is converted to a larger type can be a > sign that the result can overflow the type converted from. Example: https://github.com/ddnet/ddnet/security/code-scanning/17?query=ref%3Arefs%2Fheads%2Fmaster
68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
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/* If you are missing that file, acquire a complete release at teeworlds.com. */
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#include <base/math.h>
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#include <base/system.h>
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#include <engine/shared/dilate.h>
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#include <pnglite.h>
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int DilateFile(const char *pFileName)
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{
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png_t Png;
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png_init(0, 0);
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int Error = png_open_file(&Png, pFileName);
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if(Error != PNG_NO_ERROR)
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{
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dbg_msg("dilate", "failed to open image file. filename='%s', pnglite: %s", pFileName, png_error_string(Error));
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if(Error != PNG_FILE_ERROR)
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png_close_file(&Png);
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return 0;
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}
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if(Png.color_type != PNG_TRUECOLOR_ALPHA)
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{
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dbg_msg("dilate", "%s: not an RGBA image", pFileName);
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return 1;
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}
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unsigned char *pBuffer = (unsigned char *)malloc((size_t)Png.width * Png.height * sizeof(unsigned char) * 4);
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Error = png_get_data(&Png, pBuffer);
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if(Error != PNG_NO_ERROR)
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{
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dbg_msg("map_convert_07", "failed to read image. filename='%s', pnglite: %s", pFileName, png_error_string(Error));
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free(pBuffer);
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png_close_file(&Png);
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return 0;
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}
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png_close_file(&Png);
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int w = Png.width;
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int h = Png.height;
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DilateImage(pBuffer, w, h, 4);
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// save here
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png_open_file_write(&Png, pFileName);
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png_set_data(&Png, w, h, 8, PNG_TRUECOLOR_ALPHA, (unsigned char *)pBuffer);
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png_close_file(&Png);
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free(pBuffer);
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return 0;
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}
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int main(int argc, const char **argv)
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{
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dbg_logger_stdout();
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if(argc == 1)
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{
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dbg_msg("usage", "%s FILE1 [ FILE2... ]", argv[0]);
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return -1;
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}
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for(int i = 1; i < argc; i++)
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DilateFile(argv[i]);
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return 0;
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}
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