1b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 2b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* pngunknown.c - test the read side unknown chunk handling 3b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * 4b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * Last changed in libpng 1.6.10 [March 6, 2014] 5b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * Copyright (c) 2014 Glenn Randers-Pehrson 6b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * Written by John Cunningham Bowler 7b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * 8b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * This code is released under the libpng license. 9b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * For conditions of distribution and use, see the disclaimer 10b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * and license in png.h 11b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * 12b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * NOTES: 13b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * This is a C program that is intended to be linked against libpng. It 14b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * allows the libpng unknown handling code to be tested by interpreting 15b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * arguments to save or discard combinations of chunks. The program is 16b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * currently just a minimal validation for the built-in libpng facilities. 17b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 18b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 19b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#include <stdlib.h> 20b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#include <string.h> 21b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#include <stdio.h> 22b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#include <setjmp.h> 23b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 24b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* Define the following to use this test against your installed libpng, rather 25b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * than the one being built here: 26b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 27b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#ifdef PNG_FREESTANDING_TESTS 28b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# include <png.h> 29b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#else 30b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# include "../../png.h" 31b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#endif 32b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 33b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari/* Since this program tests the ability to change the unknown chunk handling 34b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * these must be defined: 35b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 36b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#if defined(PNG_SET_UNKNOWN_CHUNKS_SUPPORTED) &&\ 37b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari defined(PNG_READ_SUPPORTED) 38b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 39b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari/* One of these must be defined to allow us to find out what happened. It is 40b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * still useful to set unknown chunk handling without either of these in order 41b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * to cause *known* chunks to be discarded. This can be a significant 42b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * efficiency gain, but it can't really be tested here. 43b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 44b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#if defined(PNG_READ_USER_CHUNKS_SUPPORTED) ||\ 45b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari defined(PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED) 46b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 47b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#if PNG_LIBPNG_VER < 10500 48b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* This deliberately lacks the PNG_CONST. */ 49b50c217251b086440efcdb273c22f86a06c80cbaChris Craiktypedef png_byte *png_const_bytep; 50b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 51b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* This is copied from 1.5.1 png.h: */ 52b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_INTERLACE_ADAM7_PASSES 7 53b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_PASS_START_ROW(pass) (((1U&~(pass))<<(3-((pass)>>1)))&7) 54b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_PASS_START_COL(pass) (((1U& (pass))<<(3-(((pass)+1)>>1)))&7) 55b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_PASS_ROW_SHIFT(pass) ((pass)>2?(8-(pass))>>1:3) 56b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_PASS_COL_SHIFT(pass) ((pass)>1?(7-(pass))>>1:3) 57b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_PASS_ROWS(height, pass) (((height)+(((1<<PNG_PASS_ROW_SHIFT(pass))\ 58b50c217251b086440efcdb273c22f86a06c80cbaChris Craik -1)-PNG_PASS_START_ROW(pass)))>>PNG_PASS_ROW_SHIFT(pass)) 59b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_PASS_COLS(width, pass) (((width)+(((1<<PNG_PASS_COL_SHIFT(pass))\ 60b50c217251b086440efcdb273c22f86a06c80cbaChris Craik -1)-PNG_PASS_START_COL(pass)))>>PNG_PASS_COL_SHIFT(pass)) 61b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_ROW_FROM_PASS_ROW(yIn, pass) \ 62b50c217251b086440efcdb273c22f86a06c80cbaChris Craik (((yIn)<<PNG_PASS_ROW_SHIFT(pass))+PNG_PASS_START_ROW(pass)) 63b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_COL_FROM_PASS_COL(xIn, pass) \ 64b50c217251b086440efcdb273c22f86a06c80cbaChris Craik (((xIn)<<PNG_PASS_COL_SHIFT(pass))+PNG_PASS_START_COL(pass)) 65b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_PASS_MASK(pass,off) ( \ 66b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ((0x110145AFU>>(((7-(off))-(pass))<<2)) & 0xFU) | \ 67b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ((0x01145AF0U>>(((7-(off))-(pass))<<2)) & 0xF0U)) 68b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_ROW_IN_INTERLACE_PASS(y, pass) \ 69b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ((PNG_PASS_MASK(pass,0) >> ((y)&7)) & 1) 70b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_COL_IN_INTERLACE_PASS(x, pass) \ 71b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ((PNG_PASS_MASK(pass,1) >> ((x)&7)) & 1) 72b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 73b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* These are needed too for the default build: */ 74b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_WRITE_16BIT_SUPPORTED 75b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_READ_16BIT_SUPPORTED 76b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 77b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* This comes from pnglibconf.h afer 1.5: */ 78b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_FP_1 100000 79b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_GAMMA_THRESHOLD_FIXED\ 80b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ((png_fixed_point)(PNG_GAMMA_THRESHOLD * PNG_FP_1)) 81b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#endif 82b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 83b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#if PNG_LIBPNG_VER < 10600 84b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* 1.6.0 constifies many APIs. The following exists to allow pngvalid to be 85b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * compiled against earlier versions. 86b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 87b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# define png_const_structp png_structp 88b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#endif 89b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 90b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#if PNG_LIBPNG_VER < 10700 91b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* Copied from libpng 1.7.0 png.h */ 92b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define PNG_u2(b1, b2) (((unsigned int)(b1) << 8) + (b2)) 93b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 94b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define PNG_U16(b1, b2) ((png_uint_16)PNG_u2(b1, b2)) 95b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define PNG_U32(b1, b2, b3, b4)\ 96b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari (((png_uint_32)PNG_u2(b1, b2) << 16) + PNG_u2(b3, b4)) 97b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 98b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari/* Constants for known chunk types. 99b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 100b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_IDAT PNG_U32( 73, 68, 65, 84) 101b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_IEND PNG_U32( 73, 69, 78, 68) 102b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_IHDR PNG_U32( 73, 72, 68, 82) 103b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_PLTE PNG_U32( 80, 76, 84, 69) 104b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_bKGD PNG_U32( 98, 75, 71, 68) 105b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_cHRM PNG_U32( 99, 72, 82, 77) 106b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_fRAc PNG_U32(102, 82, 65, 99) /* registered, not defined */ 107b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_gAMA PNG_U32(103, 65, 77, 65) 108b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_gIFg PNG_U32(103, 73, 70, 103) 109b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_gIFt PNG_U32(103, 73, 70, 116) /* deprecated */ 110b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_gIFx PNG_U32(103, 73, 70, 120) 111b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_hIST PNG_U32(104, 73, 83, 84) 112b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_iCCP PNG_U32(105, 67, 67, 80) 113b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_iTXt PNG_U32(105, 84, 88, 116) 114b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_oFFs PNG_U32(111, 70, 70, 115) 115b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_pCAL PNG_U32(112, 67, 65, 76) 116b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_pHYs PNG_U32(112, 72, 89, 115) 117b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_sBIT PNG_U32(115, 66, 73, 84) 118b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_sCAL PNG_U32(115, 67, 65, 76) 119b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_sPLT PNG_U32(115, 80, 76, 84) 120b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_sRGB PNG_U32(115, 82, 71, 66) 121b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_sTER PNG_U32(115, 84, 69, 82) 122b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_tEXt PNG_U32(116, 69, 88, 116) 123b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_tIME PNG_U32(116, 73, 77, 69) 124b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_tRNS PNG_U32(116, 82, 78, 83) 125b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_zTXt PNG_U32(122, 84, 88, 116) 126b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 127b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* Test on flag values as defined in the spec (section 5.4): */ 128b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define PNG_CHUNK_ANCILLARY(c) (1 & ((c) >> 29)) 129b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_CHUNK_CRITICAL(c) (!PNG_CHUNK_ANCILLARY(c)) 130b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_CHUNK_PRIVATE(c) (1 & ((c) >> 21)) 131b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_CHUNK_RESERVED(c) (1 & ((c) >> 13)) 132b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_CHUNK_SAFE_TO_COPY(c) (1 & ((c) >> 5)) 133b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 134b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#endif /* PNG_LIBPNG_VER < 10700 */ 135b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 136b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#ifdef __cplusplus 137b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# define this not_the_cpp_this 138b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# define new not_the_cpp_new 139b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# define voidcast(type, value) static_cast<type>(value) 140b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#else 141b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# define voidcast(type, value) (value) 142b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#endif /* __cplusplus */ 143b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 144b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari/* Unused formal parameter errors are removed using the following macro which is 145b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * expected to have no bad effects on performance. 146b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 147b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#ifndef UNUSED 148b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# if defined(__GNUC__) || defined(_MSC_VER) 149b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# define UNUSED(param) (void)param; 150b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# else 151b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# define UNUSED(param) 152b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 153b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#endif 154b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 155b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari/* Types of chunks not known to libpng */ 156b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#define png_vpAg PNG_U32(118, 112, 65, 103) 157b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 158b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* Chunk information */ 159b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_INFO_tEXt 0x10000000U 160b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_INFO_iTXt 0x20000000U 161b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_INFO_zTXt 0x40000000U 162b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 163b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_INFO_sTER 0x01000000U 164b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define PNG_INFO_vpAg 0x02000000U 165b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 166b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define ABSENT 0 167b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define START 1 168b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define END 2 169b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 170b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic struct 171b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 172b50c217251b086440efcdb273c22f86a06c80cbaChris Craik char name[5]; 173b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 flag; 174b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 tag; 175b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int unknown; /* Chunk not known to libpng */ 176b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int all; /* Chunk set by the '-1' option */ 177b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int position; /* position in pngtest.png */ 178b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int keep; /* unknown handling setting */ 179b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} chunk_info[] = { 180b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Critical chunks */ 181b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "IDAT", PNG_INFO_IDAT, png_IDAT, 0, 0, START, 0 }, /* must be [0] */ 182b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "PLTE", PNG_INFO_PLTE, png_PLTE, 0, 0, ABSENT, 0 }, 183b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 184b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Non-critical chunks that libpng handles */ 185b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* This is a mess but it seems to be the only way to do it - there is no way 186b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * to check for a definition outside a #if. 187b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 188b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "bKGD", PNG_INFO_bKGD, png_bKGD, 189b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_bKGD_SUPPORTED 190b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 191b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 192b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 193b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 194b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 195b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "cHRM", PNG_INFO_cHRM, png_cHRM, 196b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_cHRM_SUPPORTED 197b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 198b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 199b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 200b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 201b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 202b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "gAMA", PNG_INFO_gAMA, png_gAMA, 203b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_gAMA_SUPPORTED 204b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 205b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 206b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 207b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 208b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 209b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "hIST", PNG_INFO_hIST, png_hIST, 210b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_hIST_SUPPORTED 211b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 212b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 213b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 214b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 215b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, ABSENT, 0 }, 216b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "iCCP", PNG_INFO_iCCP, png_iCCP, 217b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_iCCP_SUPPORTED 218b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 219b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 220b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 221b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 222b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, ABSENT, 0 }, 223b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "iTXt", PNG_INFO_iTXt, png_iTXt, 224b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_iTXt_SUPPORTED 225b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 226b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 227b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 228b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 229b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, ABSENT, 0 }, 230b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "oFFs", PNG_INFO_oFFs, png_oFFs, 231b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_oFFs_SUPPORTED 232b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 233b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 234b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 235b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 236b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 237b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "pCAL", PNG_INFO_pCAL, png_pCAL, 238b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_pCAL_SUPPORTED 239b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 240b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 241b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 242b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 243b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 244b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "pHYs", PNG_INFO_pHYs, png_pHYs, 245b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_pHYs_SUPPORTED 246b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 247b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 248b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 249b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 250b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 251b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "sBIT", PNG_INFO_sBIT, png_sBIT, 252b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_sBIT_SUPPORTED 253b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 254b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 255b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 256b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 257b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 258b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "sCAL", PNG_INFO_sCAL, png_sCAL, 259b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_sCAL_SUPPORTED 260b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 261b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 262b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 263b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 264b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 265b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "sPLT", PNG_INFO_sPLT, png_sPLT, 266b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_sPLT_SUPPORTED 267b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 268b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 269b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 270b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 271b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, ABSENT, 0 }, 272b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "sRGB", PNG_INFO_sRGB, png_sRGB, 273b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_sRGB_SUPPORTED 274b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 275b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 276b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 277b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 278b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 279b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "tEXt", PNG_INFO_tEXt, png_tEXt, 280b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_tEXt_SUPPORTED 281b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 282b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 283b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 284b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 285b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 286b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "tIME", PNG_INFO_tIME, png_tIME, 287b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_tIME_SUPPORTED 288b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 289b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 290b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 291b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 292b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, START, 0 }, 293b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "tRNS", PNG_INFO_tRNS, png_tRNS, 294b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_tRNS_SUPPORTED 295b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 296b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 297b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 298b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 299b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, ABSENT, 0 }, 300b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "zTXt", PNG_INFO_zTXt, png_zTXt, 301b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# ifdef PNG_READ_zTXt_SUPPORTED 302b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0, 303b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# else 304b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, 305b50c217251b086440efcdb273c22f86a06c80cbaChris Craik# endif 306b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1, END, 0 }, 307b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 308b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* No libpng handling */ 309b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "sTER", PNG_INFO_sTER, png_sTER, 1, 1, START, 0 }, 310b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { "vpAg", PNG_INFO_vpAg, png_vpAg, 1, 0, START, 0 }, 311b50c217251b086440efcdb273c22f86a06c80cbaChris Craik}; 312b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 313b50c217251b086440efcdb273c22f86a06c80cbaChris Craik#define NINFO ((int)((sizeof chunk_info)/(sizeof chunk_info[0]))) 314b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 315b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic void 316b50c217251b086440efcdb273c22f86a06c80cbaChris Craikclear_keep(void) 317b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 318b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int i = NINFO; 319b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (--i >= 0) 320b50c217251b086440efcdb273c22f86a06c80cbaChris Craik chunk_info[i].keep = 0; 321b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 322b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 323b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic int 324b50c217251b086440efcdb273c22f86a06c80cbaChris Craikfind(const char *name) 325b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 326b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int i = NINFO; 327b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (--i >= 0) 328b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 329b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (memcmp(chunk_info[i].name, name, 4) == 0) 330b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 331b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 332b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 333b50c217251b086440efcdb273c22f86a06c80cbaChris Craik return i; 334b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 335b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 336b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic int 337b50c217251b086440efcdb273c22f86a06c80cbaChris Craikfindb(const png_byte *name) 338b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 339b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int i = NINFO; 340b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (--i >= 0) 341b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 342b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (memcmp(chunk_info[i].name, name, 4) == 0) 343b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 344b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 345b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 346b50c217251b086440efcdb273c22f86a06c80cbaChris Craik return i; 347b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 348b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 349b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic int 350b50c217251b086440efcdb273c22f86a06c80cbaChris Craikfind_by_flag(png_uint_32 flag) 351b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 352b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int i = NINFO; 353b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 354b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (--i >= 0) if (chunk_info[i].flag == flag) return i; 355b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 356b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "pngunknown: internal error\n"); 357b50c217251b086440efcdb273c22f86a06c80cbaChris Craik exit(4); 358b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 359b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 360b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic int 361b50c217251b086440efcdb273c22f86a06c80cbaChris Craikancillary(const char *name) 362b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 363b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari return PNG_CHUNK_ANCILLARY(PNG_U32(name[0], name[1], name[2], name[3])); 364b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 365b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 366b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED 367b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic int 368b50c217251b086440efcdb273c22f86a06c80cbaChris Craikancillaryb(const png_byte *name) 369b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 370b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari return PNG_CHUNK_ANCILLARY(PNG_U32(name[0], name[1], name[2], name[3])); 371b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 372b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#endif 373b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 374b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* Type of an error_ptr */ 375b50c217251b086440efcdb273c22f86a06c80cbaChris Craiktypedef struct 376b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 377b50c217251b086440efcdb273c22f86a06c80cbaChris Craik jmp_buf error_return; 378b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_structp png_ptr; 379b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_infop info_ptr, end_ptr; 380b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_uint_32 before_IDAT; 381b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_uint_32 after_IDAT; 382b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int error_count; 383b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int warning_count; 384b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari int keep; /* the default value */ 385b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *program; 386b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *file; 387b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *test; 388b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} display; 389b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 390b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic const char init[] = "initialization"; 391b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic const char cmd[] = "command line"; 392b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 393b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic void 394b50c217251b086440efcdb273c22f86a06c80cbaChris Craikinit_display(display *d, const char *program) 395b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 396b50c217251b086440efcdb273c22f86a06c80cbaChris Craik memset(d, 0, sizeof *d); 397b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->png_ptr = NULL; 398b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->info_ptr = d->end_ptr = NULL; 399b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->error_count = d->warning_count = 0; 400b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->program = program; 401b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->file = program; 402b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test = init; 403b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 404b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 405b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic void 406b50c217251b086440efcdb273c22f86a06c80cbaChris Craikclean_display(display *d) 407b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 408b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_destroy_read_struct(&d->png_ptr, &d->info_ptr, &d->end_ptr); 409b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 410b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* This must not happen - it might cause an app crash */ 411b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (d->png_ptr != NULL || d->info_ptr != NULL || d->end_ptr != NULL) 412b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 413b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): png_destroy_read_struct error\n", d->file, 414b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test); 415b50c217251b086440efcdb273c22f86a06c80cbaChris Craik exit(1); 416b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 417b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 418b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 419b50c217251b086440efcdb273c22f86a06c80cbaChris CraikPNG_FUNCTION(void, display_exit, (display *d), static PNG_NORETURN) 420b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 421b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ++(d->error_count); 422b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 423b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (d->png_ptr != NULL) 424b50c217251b086440efcdb273c22f86a06c80cbaChris Craik clean_display(d); 425b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 426b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* During initialization and if this is a single command line argument set 427b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * exit now - there is only one test, otherwise longjmp to do the next test. 428b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 429b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (d->test == init || d->test == cmd) 430b50c217251b086440efcdb273c22f86a06c80cbaChris Craik exit(1); 431b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 432b50c217251b086440efcdb273c22f86a06c80cbaChris Craik longjmp(d->error_return, 1); 433b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 434b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 435b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic int 436b50c217251b086440efcdb273c22f86a06c80cbaChris Craikdisplay_rc(const display *d, int strict) 437b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 438b50c217251b086440efcdb273c22f86a06c80cbaChris Craik return d->error_count + (strict ? d->warning_count : 0); 439b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 440b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 441b50c217251b086440efcdb273c22f86a06c80cbaChris Craik/* libpng error and warning callbacks */ 442b478e66e7c2621eef5f465e4629ce642db00716bSireesh TripurariPNG_FUNCTION(void, (PNGCBAPI error), (png_structp png_ptr, const char *message), 443b50c217251b086440efcdb273c22f86a06c80cbaChris Craik static PNG_NORETURN) 444b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 445b50c217251b086440efcdb273c22f86a06c80cbaChris Craik display *d = (display*)png_get_error_ptr(png_ptr); 446b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 447b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): libpng error: %s\n", d->file, d->test, message); 448b50c217251b086440efcdb273c22f86a06c80cbaChris Craik display_exit(d); 449b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 450b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 451b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripuraristatic void PNGCBAPI 452b50c217251b086440efcdb273c22f86a06c80cbaChris Craikwarning(png_structp png_ptr, const char *message) 453b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 454b50c217251b086440efcdb273c22f86a06c80cbaChris Craik display *d = (display*)png_get_error_ptr(png_ptr); 455b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 456b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): libpng warning: %s\n", d->file, d->test, message); 457b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ++(d->warning_count); 458b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 459b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 460b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic png_uint_32 461b50c217251b086440efcdb273c22f86a06c80cbaChris Craikget_valid(display *d, png_infop info_ptr) 462b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 463b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 flags = png_get_valid(d->png_ptr, info_ptr, (png_uint_32)~0); 464b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 465b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Map the text chunks back into the flags */ 466b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 467b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_textp text; 468b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 ntext = png_get_text(d->png_ptr, info_ptr, &text, NULL); 469b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 470b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (ntext-- > 0) switch (text[ntext].compression) 471b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 472b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case -1: 473b50c217251b086440efcdb273c22f86a06c80cbaChris Craik flags |= PNG_INFO_tEXt; 474b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 475b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case 0: 476b50c217251b086440efcdb273c22f86a06c80cbaChris Craik flags |= PNG_INFO_zTXt; 477b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 478b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case 1: 479b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case 2: 480b50c217251b086440efcdb273c22f86a06c80cbaChris Craik flags |= PNG_INFO_iTXt; 481b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 482b50c217251b086440efcdb273c22f86a06c80cbaChris Craik default: 483b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): unknown text compression %d\n", d->file, 484b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test, text[ntext].compression); 485b50c217251b086440efcdb273c22f86a06c80cbaChris Craik display_exit(d); 486b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 487b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 488b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 489b50c217251b086440efcdb273c22f86a06c80cbaChris Craik return flags; 490b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 491b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 492b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#ifdef PNG_READ_USER_CHUNKS_SUPPORTED 493b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripuraristatic int PNGCBAPI 494b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurariread_callback(png_structp pp, png_unknown_chunkp pc) 495b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari{ 496b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* This function mimics the behavior of png_set_keep_unknown_chunks by 497b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * returning '0' to keep the chunk and '1' to discard it. 498b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 499b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari display *d = voidcast(display*, png_get_user_chunk_ptr(pp)); 500b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari int chunk = findb(pc->name); 501b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari int keep, discard; 502b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 503b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (chunk < 0) /* not one in our list, so not a known chunk */ 504b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari keep = d->keep; 505b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 506b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari else 507b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari { 508b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari keep = chunk_info[chunk].keep; 509b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (keep == PNG_HANDLE_CHUNK_AS_DEFAULT) 510b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari { 511b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* See the comments in png.h - use the default for unknown chunks, 512b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * do not keep known chunks. 513b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 514b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (chunk_info[chunk].unknown) 515b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari keep = d->keep; 516b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 517b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari else 518b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari keep = PNG_HANDLE_CHUNK_NEVER; 519b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari } 520b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari } 521b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 522b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari switch (keep) 523b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari { 524b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari default: 525b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari fprintf(stderr, "%s(%s): %d: unrecognized chunk option\n", d->file, 526b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->test, chunk_info[chunk].keep); 527b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari display_exit(d); 528b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 529b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari case PNG_HANDLE_CHUNK_AS_DEFAULT: 530b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari case PNG_HANDLE_CHUNK_NEVER: 531b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari discard = 1/*handled; discard*/; 532b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari break; 533b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 534b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari case PNG_HANDLE_CHUNK_IF_SAFE: 535b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari case PNG_HANDLE_CHUNK_ALWAYS: 536b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari discard = 0/*not handled; keep*/; 537b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari break; 538b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari } 539b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 540b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* Also store information about this chunk in the display, the relevant flag 541b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * is set if the chunk is to be kept ('not handled'.) 542b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 543b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (chunk >= 0) if (!discard) /* stupidity to stop a GCC warning */ 544b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari { 545b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_uint_32 flag = chunk_info[chunk].flag; 546b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 547b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (pc->location & PNG_AFTER_IDAT) 548b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->after_IDAT |= flag; 549b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 550b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari else 551b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->before_IDAT |= flag; 552b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari } 553b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 554b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* However if there is no support to store unknown chunks don't ask libpng to 555b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * do it; there will be an png_error. 556b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 557b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED 558b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari return discard; 559b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# else 560b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari return 1; /*handled; discard*/ 561b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 562b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari} 563b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#endif /* READ_USER_CHUNKS_SUPPORTED */ 564b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 565b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED 566b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic png_uint_32 567b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurariget_unknown(display *d, png_infop info_ptr, int after_IDAT) 568b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 569b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Create corresponding 'unknown' flags */ 570b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 flags = 0; 571b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 572b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari UNUSED(after_IDAT) 573b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 574b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 575b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_unknown_chunkp unknown; 576b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int num_unknown = png_get_unknown_chunks(d->png_ptr, info_ptr, &unknown); 577b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 578b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (--num_unknown >= 0) 579b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 580b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int chunk = findb(unknown[num_unknown].name); 581b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 582b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Chunks not known to pngunknown must be validated here; since they 583b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * must also be unknown to libpng the 'display->keep' behavior should 584b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * have been used. 585b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 586b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (chunk < 0) switch (d->keep) 587b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 588b50c217251b086440efcdb273c22f86a06c80cbaChris Craik default: /* impossible */ 589b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_AS_DEFAULT: 590b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_NEVER: 591b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): %s: %s: unknown chunk saved\n", 592b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->file, d->test, d->keep ? "discard" : "default", 593b50c217251b086440efcdb273c22f86a06c80cbaChris Craik unknown[num_unknown].name); 594b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ++(d->error_count); 595b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 596b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 597b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_IF_SAFE: 598b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (!ancillaryb(unknown[num_unknown].name)) 599b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 600b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, 601b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "%s(%s): if-safe: %s: unknown critical chunk saved\n", 602b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->file, d->test, unknown[num_unknown].name); 603b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ++(d->error_count); 604b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 605b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 606b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* FALL THROUGH (safe) */ 607b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_ALWAYS: 608b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 609b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 610b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 611b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else 612b50c217251b086440efcdb273c22f86a06c80cbaChris Craik flags |= chunk_info[chunk].flag; 613b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 614b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 615b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 616b50c217251b086440efcdb273c22f86a06c80cbaChris Craik return flags; 617b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 618b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#else 619b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripuraristatic png_uint_32 620b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurariget_unknown(display *d, png_infop info_ptr, int after_IDAT) 621b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* Otherwise this will return the cached values set by any user callback */ 622b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari{ 623b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari UNUSED(info_ptr); 624b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 625b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (after_IDAT) 626b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari return d->after_IDAT; 627b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 628b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari else 629b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari return d->before_IDAT; 630b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari} 631b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 632b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# ifndef PNG_READ_USER_CHUNKS_SUPPORTED 633b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* The #defines above should mean this is never reached, it's just here as 634b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * a check to ensure the logic is correct. 635b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 636b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# error No store support and no user chunk support, this will not work 637b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 638b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#endif 639b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 640b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic int 641b50c217251b086440efcdb273c22f86a06c80cbaChris Craikcheck(FILE *fp, int argc, const char **argv, png_uint_32p flags/*out*/, 642b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari display *d, int set_callback) 643b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 644b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari int i, npasses, ipass; 645b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 height; 646b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 647b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->keep = PNG_HANDLE_CHUNK_AS_DEFAULT; 648b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->before_IDAT = 0; 649b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->after_IDAT = 0; 650b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 651b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Some of these errors are permanently fatal and cause an exit here, others 652b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * are per-test and cause an error return. 653b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 654b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, d, error, 655b50c217251b086440efcdb273c22f86a06c80cbaChris Craik warning); 656b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (d->png_ptr == NULL) 657b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 658b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): could not allocate png struct\n", d->file, 659b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test); 660b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Terminate here, this error is not test specific. */ 661b50c217251b086440efcdb273c22f86a06c80cbaChris Craik exit(1); 662b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 663b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 664b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->info_ptr = png_create_info_struct(d->png_ptr); 665b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->end_ptr = png_create_info_struct(d->png_ptr); 666b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (d->info_ptr == NULL || d->end_ptr == NULL) 667b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 668b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): could not allocate png info\n", d->file, 669b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test); 670b50c217251b086440efcdb273c22f86a06c80cbaChris Craik clean_display(d); 671b50c217251b086440efcdb273c22f86a06c80cbaChris Craik exit(1); 672b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 673b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 674b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_init_io(d->png_ptr, fp); 675b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 676b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# ifdef PNG_READ_USER_CHUNKS_SUPPORTED 677b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* This is only done if requested by the caller; it interferes with the 678b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * standard store/save mechanism. 679b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari */ 680b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (set_callback) 681b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_set_read_user_chunk_fn(d->png_ptr, d, read_callback); 682b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# else 683b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari UNUSED(set_callback) 684b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 685b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 686b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Handle each argument in turn; multiple settings are possible for the same 687b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * chunk and multiple calls will occur (the last one should override all 688b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * preceding ones). 689b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 690b50c217251b086440efcdb273c22f86a06c80cbaChris Craik for (i=0; i<argc; ++i) 691b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 692b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *equals = strchr(argv[i], '='); 693b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 694b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (equals != NULL) 695b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 696b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int chunk, option; 697b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 698b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (strcmp(equals+1, "default") == 0) 699b50c217251b086440efcdb273c22f86a06c80cbaChris Craik option = PNG_HANDLE_CHUNK_AS_DEFAULT; 700b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else if (strcmp(equals+1, "discard") == 0) 701b50c217251b086440efcdb273c22f86a06c80cbaChris Craik option = PNG_HANDLE_CHUNK_NEVER; 702b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else if (strcmp(equals+1, "if-safe") == 0) 703b50c217251b086440efcdb273c22f86a06c80cbaChris Craik option = PNG_HANDLE_CHUNK_IF_SAFE; 704b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else if (strcmp(equals+1, "save") == 0) 705b50c217251b086440efcdb273c22f86a06c80cbaChris Craik option = PNG_HANDLE_CHUNK_ALWAYS; 706b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else 707b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 708b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): %s: unrecognized chunk option\n", d->file, 709b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test, argv[i]); 710b50c217251b086440efcdb273c22f86a06c80cbaChris Craik display_exit(d); 711b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 712b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 713b50c217251b086440efcdb273c22f86a06c80cbaChris Craik switch (equals - argv[i]) 714b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 715b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case 4: /* chunk name */ 716b50c217251b086440efcdb273c22f86a06c80cbaChris Craik chunk = find(argv[i]); 717b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 718b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (chunk >= 0) 719b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 720b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* These #if tests have the effect of skipping the arguments 721b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * if SAVE support is unavailable - we can't do a useful test 722b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * in this case, so we just check the arguments! This could 723b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * be improved in the future by using the read callback. 724b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 725b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_byte name[5]; 726b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 727b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari memcpy(name, chunk_info[chunk].name, 5); 728b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_set_keep_unknown_chunks(d->png_ptr, option, name, 1); 729b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari chunk_info[chunk].keep = option; 730b50c217251b086440efcdb273c22f86a06c80cbaChris Craik continue; 731b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 732b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 733b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 734b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 735b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case 7: /* default */ 736b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (memcmp(argv[i], "default", 7) == 0) 737b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 738b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_set_keep_unknown_chunks(d->png_ptr, option, NULL, 0); 739b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->keep = option; 740b50c217251b086440efcdb273c22f86a06c80cbaChris Craik continue; 741b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 742b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 743b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 744b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 745b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case 3: /* all */ 746b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (memcmp(argv[i], "all", 3) == 0) 747b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 748b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_set_keep_unknown_chunks(d->png_ptr, option, NULL, -1); 749b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari d->keep = option; 750b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 751b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari for (chunk = 0; chunk < NINFO; ++chunk) 752b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (chunk_info[chunk].all) 753b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari chunk_info[chunk].keep = option; 754b50c217251b086440efcdb273c22f86a06c80cbaChris Craik continue; 755b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 756b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 757b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 758b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 759b50c217251b086440efcdb273c22f86a06c80cbaChris Craik default: /* some misplaced = */ 760b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 761b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 762b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 763b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 764b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 765b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): %s: unrecognized chunk argument\n", d->file, 766b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test, argv[i]); 767b50c217251b086440efcdb273c22f86a06c80cbaChris Craik display_exit(d); 768b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 769b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 770b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_read_info(d->png_ptr, d->info_ptr); 771b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 772b50c217251b086440efcdb273c22f86a06c80cbaChris Craik switch (png_get_interlace_type(d->png_ptr, d->info_ptr)) 773b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 774b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_INTERLACE_NONE: 775b50c217251b086440efcdb273c22f86a06c80cbaChris Craik npasses = 1; 776b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 777b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 778b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_INTERLACE_ADAM7: 779b50c217251b086440efcdb273c22f86a06c80cbaChris Craik npasses = PNG_INTERLACE_ADAM7_PASSES; 780b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 781b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 782b50c217251b086440efcdb273c22f86a06c80cbaChris Craik default: 783b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Hard error because it is not test specific */ 784b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): invalid interlace type\n", d->file, d->test); 785b50c217251b086440efcdb273c22f86a06c80cbaChris Craik clean_display(d); 786b50c217251b086440efcdb273c22f86a06c80cbaChris Craik exit(1); 787b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 788b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 789b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Skip the image data, if IDAT is not being handled then don't do this 790b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * because it will cause a CRC error. 791b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 792b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (chunk_info[0/*IDAT*/].keep == PNG_HANDLE_CHUNK_AS_DEFAULT) 793b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 794b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_start_read_image(d->png_ptr); 795b50c217251b086440efcdb273c22f86a06c80cbaChris Craik height = png_get_image_height(d->png_ptr, d->info_ptr); 796b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 797b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (npasses > 1) 798b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 799b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 width = png_get_image_width(d->png_ptr, d->info_ptr); 800b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 801b50c217251b086440efcdb273c22f86a06c80cbaChris Craik for (ipass=0; ipass<npasses; ++ipass) 802b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 803b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 wPass = PNG_PASS_COLS(width, ipass); 804b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 805b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (wPass > 0) 806b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 807b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 y; 808b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 809b50c217251b086440efcdb273c22f86a06c80cbaChris Craik for (y=0; y<height; ++y) if (PNG_ROW_IN_INTERLACE_PASS(y, ipass)) 810b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_read_row(d->png_ptr, NULL, NULL); 811b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 812b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 813b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } /* interlaced */ 814b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 815b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else /* not interlaced */ 816b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 817b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 y; 818b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 819b50c217251b086440efcdb273c22f86a06c80cbaChris Craik for (y=0; y<height; ++y) 820b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_read_row(d->png_ptr, NULL, NULL); 821b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 822b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 823b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 824b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_read_end(d->png_ptr, d->end_ptr); 825b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 826b50c217251b086440efcdb273c22f86a06c80cbaChris Craik flags[0] = get_valid(d, d->info_ptr); 827b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari flags[1] = get_unknown(d, d->info_ptr, 0/*before IDAT*/); 828b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 829b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Only png_read_png sets PNG_INFO_IDAT! */ 830b50c217251b086440efcdb273c22f86a06c80cbaChris Craik flags[chunk_info[0/*IDAT*/].keep != PNG_HANDLE_CHUNK_AS_DEFAULT] |= 831b50c217251b086440efcdb273c22f86a06c80cbaChris Craik PNG_INFO_IDAT; 832b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 833b50c217251b086440efcdb273c22f86a06c80cbaChris Craik flags[2] = get_valid(d, d->end_ptr); 834b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari flags[3] = get_unknown(d, d->end_ptr, 1/*after IDAT*/); 835b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 836b50c217251b086440efcdb273c22f86a06c80cbaChris Craik clean_display(d); 837b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 838b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari return d->keep; 839b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 840b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 841b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic void 842b50c217251b086440efcdb273c22f86a06c80cbaChris Craikcheck_error(display *d, png_uint_32 flags, const char *message) 843b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 844b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (flags) 845b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 846b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 flag = flags & -(png_int_32)flags; 847b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int i = find_by_flag(flag); 848b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 849b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s(%s): chunk %s: %s\n", d->file, d->test, 850b50c217251b086440efcdb273c22f86a06c80cbaChris Craik chunk_info[i].name, message); 851b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ++(d->error_count); 852b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 853b50c217251b086440efcdb273c22f86a06c80cbaChris Craik flags &= ~flag; 854b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 855b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 856b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 857b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic void 858b50c217251b086440efcdb273c22f86a06c80cbaChris Craikcheck_handling(display *d, int def, png_uint_32 chunks, png_uint_32 known, 859b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_uint_32 unknown, const char *position, int set_callback) 860b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 861b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (chunks) 862b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 863b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 flag = chunks & -(png_int_32)chunks; 864b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int i = find_by_flag(flag); 865b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int keep = chunk_info[i].keep; 866b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *type; 867b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *errorx = NULL; 868b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 869b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (chunk_info[i].unknown) 870b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 871b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (keep == PNG_HANDLE_CHUNK_AS_DEFAULT) 872b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 873b50c217251b086440efcdb273c22f86a06c80cbaChris Craik type = "UNKNOWN (default)"; 874b50c217251b086440efcdb273c22f86a06c80cbaChris Craik keep = def; 875b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 876b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 877b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else 878b50c217251b086440efcdb273c22f86a06c80cbaChris Craik type = "UNKNOWN (specified)"; 879b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 880b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (flag & known) 881b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "chunk processed"; 882b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 883b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else switch (keep) 884b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 885b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_AS_DEFAULT: 886b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (flag & unknown) 887b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "DEFAULT: unknown chunk saved"; 888b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 889b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 890b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_NEVER: 891b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (flag & unknown) 892b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "DISCARD: unknown chunk saved"; 893b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 894b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 895b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_IF_SAFE: 896b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (ancillary(chunk_info[i].name)) 897b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 898b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (!(flag & unknown)) 899b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "IF-SAFE: unknown ancillary chunk lost"; 900b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 901b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 902b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else if (flag & unknown) 903b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "IF-SAFE: unknown critical chunk saved"; 904b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 905b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 906b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_ALWAYS: 907b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (!(flag & unknown)) 908b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "SAVE: unknown chunk lost"; 909b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 910b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 911b50c217251b086440efcdb273c22f86a06c80cbaChris Craik default: 912b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "internal error: bad keep"; 913b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 914b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 915b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } /* unknown chunk */ 916b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 917b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else /* known chunk */ 918b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 919b50c217251b086440efcdb273c22f86a06c80cbaChris Craik type = "KNOWN"; 920b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 921b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (flag & known) 922b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 923b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* chunk was processed, it won't have been saved because that is 924b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * caught below when checking for inconsistent processing. 925b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 926b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (keep != PNG_HANDLE_CHUNK_AS_DEFAULT) 927b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "!DEFAULT: known chunk processed"; 928b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 929b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 930b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else /* not processed */ switch (keep) 931b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 932b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_AS_DEFAULT: 933b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "DEFAULT: known chunk not processed"; 934b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 935b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 936b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_NEVER: 937b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (flag & unknown) 938b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "DISCARD: known chunk saved"; 939b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 940b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 941b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_IF_SAFE: 942b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (ancillary(chunk_info[i].name)) 943b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 944b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (!(flag & unknown)) 945b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "IF-SAFE: known ancillary chunk lost"; 946b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 947b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 948b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else if (flag & unknown) 949b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "IF-SAFE: known critical chunk saved"; 950b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 951b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 952b50c217251b086440efcdb273c22f86a06c80cbaChris Craik case PNG_HANDLE_CHUNK_ALWAYS: 953b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (!(flag & unknown)) 954b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "SAVE: known chunk lost"; 955b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 956b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 957b50c217251b086440efcdb273c22f86a06c80cbaChris Craik default: 958b50c217251b086440efcdb273c22f86a06c80cbaChris Craik errorx = "internal error: bad keep (2)"; 959b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 960b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 961b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 962b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 963b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (errorx != NULL) 964b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 965b50c217251b086440efcdb273c22f86a06c80cbaChris Craik ++(d->error_count); 966b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari fprintf(stderr, "%s(%s%s): %s %s %s: %s\n", d->file, d->test, 967b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari set_callback ? ",callback" : "", 968b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari type, chunk_info[i].name, position, errorx); 969b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 970b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 971b50c217251b086440efcdb273c22f86a06c80cbaChris Craik chunks &= ~flag; 972b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 973b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 974b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 975b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic void 976b50c217251b086440efcdb273c22f86a06c80cbaChris Craikperform_one_test(FILE *fp, int argc, const char **argv, 977b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari png_uint_32 *default_flags, display *d, int set_callback) 978b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 979b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int def; 980b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 flags[2][4]; 981b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 982b50c217251b086440efcdb273c22f86a06c80cbaChris Craik rewind(fp); 983b50c217251b086440efcdb273c22f86a06c80cbaChris Craik clear_keep(); 984b50c217251b086440efcdb273c22f86a06c80cbaChris Craik memcpy(flags[0], default_flags, sizeof flags[0]); 985b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 986b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari def = check(fp, argc, argv, flags[1], d, set_callback); 987b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 988b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Chunks should either be known or unknown, never both and this should apply 989b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * whether the chunk is before or after the IDAT (actually, the app can 990b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * probably change this by swapping the handling after the image, but this 991b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * test does not do that.) 992b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 993b50c217251b086440efcdb273c22f86a06c80cbaChris Craik check_error(d, (flags[0][0]|flags[0][2]) & (flags[0][1]|flags[0][3]), 994b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "chunk handled inconsistently in count tests"); 995b50c217251b086440efcdb273c22f86a06c80cbaChris Craik check_error(d, (flags[1][0]|flags[1][2]) & (flags[1][1]|flags[1][3]), 996b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "chunk handled inconsistently in option tests"); 997b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 998b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Now find out what happened to each chunk before and after the IDAT and 999b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * determine if the behavior was correct. First some basic sanity checks, 1000b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * any known chunk should be known in the original count, any unknown chunk 1001b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * should be either known or unknown in the original. 1002b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 1003b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1004b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 test; 1005b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1006b50c217251b086440efcdb273c22f86a06c80cbaChris Craik test = flags[1][0] & ~flags[0][0]; 1007b50c217251b086440efcdb273c22f86a06c80cbaChris Craik check_error(d, test, "new known chunk before IDAT"); 1008b50c217251b086440efcdb273c22f86a06c80cbaChris Craik test = flags[1][1] & ~(flags[0][0] | flags[0][1]); 1009b50c217251b086440efcdb273c22f86a06c80cbaChris Craik check_error(d, test, "new unknown chunk before IDAT"); 1010b50c217251b086440efcdb273c22f86a06c80cbaChris Craik test = flags[1][2] & ~flags[0][2]; 1011b50c217251b086440efcdb273c22f86a06c80cbaChris Craik check_error(d, test, "new known chunk after IDAT"); 1012b50c217251b086440efcdb273c22f86a06c80cbaChris Craik test = flags[1][3] & ~(flags[0][2] | flags[0][3]); 1013b50c217251b086440efcdb273c22f86a06c80cbaChris Craik check_error(d, test, "new unknown chunk after IDAT"); 1014b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1015b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1016b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Now each chunk in the original list should have been handled according to 1017b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * the options set for that chunk, regardless of whether libpng knows about 1018b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * it or not. 1019b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 1020b50c217251b086440efcdb273c22f86a06c80cbaChris Craik check_handling(d, def, flags[0][0] | flags[0][1], flags[1][0], flags[1][1], 1021b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari "before IDAT", set_callback); 1022b50c217251b086440efcdb273c22f86a06c80cbaChris Craik check_handling(d, def, flags[0][2] | flags[0][3], flags[1][2], flags[1][3], 1023b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari "after IDAT", set_callback); 1024b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 1025b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1026b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic void 1027b50c217251b086440efcdb273c22f86a06c80cbaChris Craikperform_one_test_safe(FILE *fp, int argc, const char **argv, 1028b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 *default_flags, display *d, const char *test) 1029b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 1030b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (setjmp(d->error_return) == 0) 1031b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1032b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test = test; /* allow use of d->error_return */ 1033b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED 1034b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari perform_one_test(fp, argc, argv, default_flags, d, 0); 1035b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 1036b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# ifdef PNG_READ_USER_CHUNKS_SUPPORTED 1037b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari perform_one_test(fp, argc, argv, default_flags, d, 1); 1038b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 1039b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d->test = init; /* prevent use of d->error_return */ 1040b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1041b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 1042b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1043b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic const char *standard_tests[] = 1044b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 1045b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "discard", "default=discard", 0, 1046b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "save", "default=save", 0, 1047b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "if-safe", "default=if-safe", 0, 1048b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "vpAg", "vpAg=if-safe", 0, 1049b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "sTER", "sTER=if-safe", 0, 1050b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "IDAT", "default=discard", "IDAT=save", 0, 1051b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "sAPI", "bKGD=save", "cHRM=save", "gAMA=save", "all=discard", "iCCP=save", 1052b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "sBIT=save", "sRGB=save", 0, 1053b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 0/*end*/ 1054b50c217251b086440efcdb273c22f86a06c80cbaChris Craik}; 1055b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1056b50c217251b086440efcdb273c22f86a06c80cbaChris Craikstatic PNG_NORETURN void 1057b50c217251b086440efcdb273c22f86a06c80cbaChris Craikusage(const char *program, const char *reason) 1058b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 1059b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "pngunknown: %s: usage:\n %s [--strict] " 1060b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "--default|{(CHNK|default|all)=(default|discard|if-safe|save)} " 1061b50c217251b086440efcdb273c22f86a06c80cbaChris Craik "testfile.png\n", reason, program); 1062b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari exit(99); 1063b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 1064b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1065b50c217251b086440efcdb273c22f86a06c80cbaChris Craikint 1066b50c217251b086440efcdb273c22f86a06c80cbaChris Craikmain(int argc, const char **argv) 1067b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 1068b50c217251b086440efcdb273c22f86a06c80cbaChris Craik FILE *fp; 1069b50c217251b086440efcdb273c22f86a06c80cbaChris Craik png_uint_32 default_flags[4/*valid,unknown{before,after}*/]; 1070b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int strict = 0, default_tests = 0; 1071b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *count_argv = "default=save"; 1072b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *touch_file = NULL; 1073b50c217251b086440efcdb273c22f86a06c80cbaChris Craik display d; 1074b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1075b50c217251b086440efcdb273c22f86a06c80cbaChris Craik init_display(&d, argv[0]); 1076b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1077b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (++argv, --argc > 0) 1078b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1079b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (strcmp(*argv, "--strict") == 0) 1080b50c217251b086440efcdb273c22f86a06c80cbaChris Craik strict = 1; 1081b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1082b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else if (strcmp(*argv, "--default") == 0) 1083b50c217251b086440efcdb273c22f86a06c80cbaChris Craik default_tests = 1; 1084b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1085b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else if (strcmp(*argv, "--touch") == 0) 1086b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1087b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (argc > 1) 1088b50c217251b086440efcdb273c22f86a06c80cbaChris Craik touch_file = *++argv, --argc; 1089b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1090b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else 1091b50c217251b086440efcdb273c22f86a06c80cbaChris Craik usage(d.program, "--touch: missing file name"); 1092b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1093b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1094b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else 1095b50c217251b086440efcdb273c22f86a06c80cbaChris Craik break; 1096b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1097b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1098b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* A file name is required, but there should be no other arguments if 1099b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * --default was specified. 1100b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 1101b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (argc <= 0) 1102b50c217251b086440efcdb273c22f86a06c80cbaChris Craik usage(d.program, "missing test file"); 1103b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1104b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* GCC BUG: if (default_tests && argc != 1) triggers some weird GCC argc 1105b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * optimization which causes warnings with -Wstrict-overflow! 1106b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 1107b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else if (default_tests) if (argc != 1) 1108b50c217251b086440efcdb273c22f86a06c80cbaChris Craik usage(d.program, "extra arguments"); 1109b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1110b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* The name of the test file is the last argument; remove it. */ 1111b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d.file = argv[--argc]; 1112b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1113b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fp = fopen(d.file, "rb"); 1114b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (fp == NULL) 1115b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1116b50c217251b086440efcdb273c22f86a06c80cbaChris Craik perror(d.file); 1117b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari exit(99); 1118b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1119b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1120b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* First find all the chunks, known and unknown, in the test file, a failure 1121b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * here aborts the whole test. 1122b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * 1123b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * If 'save' is supported then the normal saving method should happen, 1124b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * otherwise if 'read' is supported then the read callback will do the 1125b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * same thing. If both are supported the 'read' callback won't be 1126b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * instantiated by default. If 'save' is *not* supported then a user 1127b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari * callback is required even though we can call png_get_unknown_chunks. 1128b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 1129b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari if (check(fp, 1, &count_argv, default_flags, &d, 1130b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED 1131b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 0 1132b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# else 1133b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 1 1134b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 1135b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari ) != PNG_HANDLE_CHUNK_ALWAYS) 1136b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1137b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s: %s: internal error\n", d.program, d.file); 1138b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari exit(99); 1139b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1140b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1141b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Now find what the various supplied options cause to change: */ 1142b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (!default_tests) 1143b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1144b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d.test = cmd; /* acts as a flag to say exit, do not longjmp */ 1145b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED 1146b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari perform_one_test(fp, argc, argv, default_flags, &d, 0); 1147b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 1148b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# ifdef PNG_READ_USER_CHUNKS_SUPPORTED 1149b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari perform_one_test(fp, argc, argv, default_flags, &d, 1); 1150b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari# endif 1151b50c217251b086440efcdb273c22f86a06c80cbaChris Craik d.test = init; 1152b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1153b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1154b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else 1155b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1156b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char **test = standard_tests; 1157b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1158b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Set the exit_test pointer here so we can continue after a libpng error. 1159b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * NOTE: this leaks memory because the png_struct data from the failing 1160b50c217251b086440efcdb273c22f86a06c80cbaChris Craik * test is never freed. 1161b50c217251b086440efcdb273c22f86a06c80cbaChris Craik */ 1162b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (*test) 1163b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1164b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *this_test = *test++; 1165b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char **next = test; 1166b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int count = display_rc(&d, strict), new_count; 1167b50c217251b086440efcdb273c22f86a06c80cbaChris Craik const char *result; 1168b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int arg_count = 0; 1169b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1170b50c217251b086440efcdb273c22f86a06c80cbaChris Craik while (*next) ++next, ++arg_count; 1171b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1172b50c217251b086440efcdb273c22f86a06c80cbaChris Craik perform_one_test_safe(fp, arg_count, test, default_flags, &d, 1173b50c217251b086440efcdb273c22f86a06c80cbaChris Craik this_test); 1174b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1175b50c217251b086440efcdb273c22f86a06c80cbaChris Craik new_count = display_rc(&d, strict); 1176b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1177b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (new_count == count) 1178b50c217251b086440efcdb273c22f86a06c80cbaChris Craik result = "PASS"; 1179b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1180b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else 1181b50c217251b086440efcdb273c22f86a06c80cbaChris Craik result = "FAIL"; 1182b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1183b50c217251b086440efcdb273c22f86a06c80cbaChris Craik printf("%s: %s %s\n", result, d.program, this_test); 1184b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1185b50c217251b086440efcdb273c22f86a06c80cbaChris Craik test = next+1; 1186b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1187b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1188b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1189b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fclose(fp); 1190b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1191b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (display_rc(&d, strict) == 0) 1192b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1193b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* Success, touch the success file if appropriate */ 1194b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (touch_file != NULL) 1195b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1196b50c217251b086440efcdb273c22f86a06c80cbaChris Craik FILE *fsuccess = fopen(touch_file, "wt"); 1197b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1198b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (fsuccess != NULL) 1199b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1200b50c217251b086440efcdb273c22f86a06c80cbaChris Craik int err = 0; 1201b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(fsuccess, "PNG unknown tests succeeded\n"); 1202b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fflush(fsuccess); 1203b50c217251b086440efcdb273c22f86a06c80cbaChris Craik err = ferror(fsuccess); 1204b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1205b50c217251b086440efcdb273c22f86a06c80cbaChris Craik if (fclose(fsuccess) || err) 1206b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1207b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s: write failed\n", touch_file); 1208b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari exit(99); 1209b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1210b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1211b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1212b50c217251b086440efcdb273c22f86a06c80cbaChris Craik else 1213b50c217251b086440efcdb273c22f86a06c80cbaChris Craik { 1214b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, "%s: open failed\n", touch_file); 1215b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari exit(99); 1216b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1217b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1218b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1219b50c217251b086440efcdb273c22f86a06c80cbaChris Craik return 0; 1220b50c217251b086440efcdb273c22f86a06c80cbaChris Craik } 1221b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1222b50c217251b086440efcdb273c22f86a06c80cbaChris Craik return 1; 1223b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 1224b50c217251b086440efcdb273c22f86a06c80cbaChris Craik 1225b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#else /* !(READ_USER_CHUNKS || SAVE_UNKNOWN_CHUNKS) */ 1226b50c217251b086440efcdb273c22f86a06c80cbaChris Craikint 1227b50c217251b086440efcdb273c22f86a06c80cbaChris Craikmain(void) 1228b50c217251b086440efcdb273c22f86a06c80cbaChris Craik{ 1229b50c217251b086440efcdb273c22f86a06c80cbaChris Craik fprintf(stderr, 1230b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari " test ignored: no support to find out about unknown chunks\n"); 1231b50c217251b086440efcdb273c22f86a06c80cbaChris Craik /* So the test is skipped: */ 1232b50c217251b086440efcdb273c22f86a06c80cbaChris Craik return 77; 1233b50c217251b086440efcdb273c22f86a06c80cbaChris Craik} 1234b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#endif /* READ_USER_CHUNKS || SAVE_UNKNOWN_CHUNKS */ 1235b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari 1236b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#else /* !(SET_UNKNOWN_CHUNKS && READ) */ 1237b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurariint 1238b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurarimain(void) 1239b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari{ 1240b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari fprintf(stderr, 1241b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari " test ignored: no support to modify unknown chunk handling\n"); 1242b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari /* So the test is skipped: */ 1243b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari return 77; 1244b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari} 1245b478e66e7c2621eef5f465e4629ce642db00716bSireesh Tripurari#endif /* SET_UNKNOWN_CHUNKS && READ*/ 1246