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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/boost/tools/boost_install/test/iostreams/bzip2-1.0.8/unzcrash.c | |
parent | Initial commit. (diff) | |
download | ceph-upstream/18.2.2.tar.xz ceph-upstream/18.2.2.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/tools/boost_install/test/iostreams/bzip2-1.0.8/unzcrash.c')
-rw-r--r-- | src/boost/tools/boost_install/test/iostreams/bzip2-1.0.8/unzcrash.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/boost/tools/boost_install/test/iostreams/bzip2-1.0.8/unzcrash.c b/src/boost/tools/boost_install/test/iostreams/bzip2-1.0.8/unzcrash.c new file mode 100644 index 000000000..c68f93c56 --- /dev/null +++ b/src/boost/tools/boost_install/test/iostreams/bzip2-1.0.8/unzcrash.c @@ -0,0 +1,141 @@ + +/* A test program written to test robustness to decompression of + corrupted data. Usage is + unzcrash filename + and the program will read the specified file, compress it (in memory), + and then repeatedly decompress it, each time with a different bit of + the compressed data inverted, so as to test all possible one-bit errors. + This should not cause any invalid memory accesses. If it does, + I want to know about it! + + PS. As you can see from the above description, the process is + incredibly slow. A file of size eg 5KB will cause it to run for + many hours. +*/ + +/* ------------------------------------------------------------------ + This file is part of bzip2/libbzip2, a program and library for + lossless, block-sorting data compression. + + bzip2/libbzip2 version 1.0.8 of 13 July 2019 + Copyright (C) 1996-2019 Julian Seward <jseward@acm.org> + + Please read the WARNING, DISCLAIMER and PATENTS sections in the + README file. + + This program is released under the terms of the license contained + in the file LICENSE. + ------------------------------------------------------------------ */ + + +#include <stdio.h> +#include <assert.h> +#include "bzlib.h" + +#define M_BLOCK 1000000 + +typedef unsigned char uchar; + +#define M_BLOCK_OUT (M_BLOCK + 1000000) +uchar inbuf[M_BLOCK]; +uchar outbuf[M_BLOCK_OUT]; +uchar zbuf[M_BLOCK + 600 + (M_BLOCK / 100)]; + +int nIn, nOut, nZ; + +static char *bzerrorstrings[] = { + "OK" + ,"SEQUENCE_ERROR" + ,"PARAM_ERROR" + ,"MEM_ERROR" + ,"DATA_ERROR" + ,"DATA_ERROR_MAGIC" + ,"IO_ERROR" + ,"UNEXPECTED_EOF" + ,"OUTBUFF_FULL" + ,"???" /* for future */ + ,"???" /* for future */ + ,"???" /* for future */ + ,"???" /* for future */ + ,"???" /* for future */ + ,"???" /* for future */ +}; + +void flip_bit ( int bit ) +{ + int byteno = bit / 8; + int bitno = bit % 8; + uchar mask = 1 << bitno; + //fprintf ( stderr, "(byte %d bit %d mask %d)", + // byteno, bitno, (int)mask ); + zbuf[byteno] ^= mask; +} + +int main ( int argc, char** argv ) +{ + FILE* f; + int r; + int bit; + int i; + + if (argc != 2) { + fprintf ( stderr, "usage: unzcrash filename\n" ); + return 1; + } + + f = fopen ( argv[1], "r" ); + if (!f) { + fprintf ( stderr, "unzcrash: can't open %s\n", argv[1] ); + return 1; + } + + nIn = fread ( inbuf, 1, M_BLOCK, f ); + fprintf ( stderr, "%d bytes read\n", nIn ); + + nZ = M_BLOCK; + r = BZ2_bzBuffToBuffCompress ( + zbuf, &nZ, inbuf, nIn, 9, 0, 30 ); + + assert (r == BZ_OK); + fprintf ( stderr, "%d after compression\n", nZ ); + + for (bit = 0; bit < nZ*8; bit++) { + fprintf ( stderr, "bit %d ", bit ); + flip_bit ( bit ); + nOut = M_BLOCK_OUT; + r = BZ2_bzBuffToBuffDecompress ( + outbuf, &nOut, zbuf, nZ, 0, 0 ); + fprintf ( stderr, " %d %s ", r, bzerrorstrings[-r] ); + + if (r != BZ_OK) { + fprintf ( stderr, "\n" ); + } else { + if (nOut != nIn) { + fprintf(stderr, "nIn/nOut mismatch %d %d\n", nIn, nOut ); + return 1; + } else { + for (i = 0; i < nOut; i++) + if (inbuf[i] != outbuf[i]) { + fprintf(stderr, "mismatch at %d\n", i ); + return 1; + } + if (i == nOut) fprintf(stderr, "really ok!\n" ); + } + } + + flip_bit ( bit ); + } + +#if 0 + assert (nOut == nIn); + for (i = 0; i < nOut; i++) { + if (inbuf[i] != outbuf[i]) { + fprintf ( stderr, "difference at %d !\n", i ); + return 1; + } + } +#endif + + fprintf ( stderr, "all ok\n" ); + return 0; +} |