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Diffstat (limited to 'depends/lzma/easylzma_test.c')
| -rw-r--r-- | depends/lzma/easylzma_test.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/depends/lzma/easylzma_test.c b/depends/lzma/easylzma_test.c new file mode 100644 index 00000000..69858728 --- /dev/null +++ b/depends/lzma/easylzma_test.c @@ -0,0 +1,282 @@ +/* + * Written in 2009 by Lloyd Hilaiel + * + * License + * + * All the cruft you find here is public domain. You don't have to credit + * anyone to use this code, but my personal request is that you mention + * Igor Pavlov for his hard, high quality work. + * + * Various compiled-in tests for the easylzma library which excercise + * API correctness and handling of corrupt data. + */ + +#include "simple.h" + +#include <stdio.h> +#include <string.h> + +static const char *sampleData = + "Overview\n" + "\n" + "Easylzma is a C library and command line tools for LZMA compression and \n" + "decompression. It uses a Igor Pavlov's reference implementation and SDK\n" + "written in C.\n" + "\n" + "License\n" + "\n" + "All the cruft you find here is public domain. You don't have to credit\n" + "anyone to use this code, but my personal request is that you mention\n" + "Igor Pavlov for his hard, high quality work.\n" + "\n" + "Project Goals\n" + "\n" + "1. A tiny C wrapper and portable build system around a subset of\n" + " Igor Pavlov's public domain LZMA compression and decompression\n" + " implementation.\n" + "2. A tiny and straighforward API\n" + "3. Support for multiple different prominent LZMA file formats (see section on\n" + " file formats below)\n" + "4. easy to build and use everywhere (doze and nix alike)\n" + "5. public domain licensing through and through. (hats off to Igor)\n" + "\n" + "Current State:\n" + "\n" + "THIS IS A WORK IN PROGRESS. The code here should be considered pre-alpha,\n" + "and this should only be used by tinkerers or hackers at this point. Once\n" + "feature completion is attained this message will be updated. See the\n" + "TODO file distributed with the source for remaining work to be done.\n" + "\n" + "Platforms Supported\n" + "\n" + "0.0.2 has been successfully compiled and run basic round trip testing\n" + "on the following platforms & compilers:\n" + "\n" + " * win32 - visual studio 2005\n" + " * osx - 10.4 & 10.5 (intel)\n" + " * netbsd ppc - 4.0.1 with gcc 4.1.2\n" + " (NOTE: memory allocation errors when dict size is default)\n" + " * freebsd 6.1 - amd64 gcc 3.4.4\n" + "\n" + "Features\n" + "\n" + "XXX: write me (and the code)\n" + "\n" + "Usage\n" + "\n" + "XXX: write me (and the code)\n" + "\n" + "The Saga of LZMA File Formats, and a couple cents.\n" + "\n" + "As far as I can tell, there are at least four different ways to put LZMA\n" + "compressed data in a stream:\n" + "\n" + "1. The LZMA-Alone format, which consists of a 13 byte header including\n" + " compression properties, dictionary size, and the uncompressed size of\n" + " the file, followed by compressed data. This format has some support\n" + " in Igor Pavlov's reference implementation and is in widespread use, as\n" + " it's supported by lzmautils: http://tukaani.org/lzma/\n" + "\n" + " The canonical (afaict) implementation of this format (lzmautis) is\n" + " BSD licensed.\n" + "\n" + "2. The lzip format (http://www.nongnu.org/lzip/lzip.html) - which\n" + " includes a CRC footer and leading \"magic number\". The former\n" + " affords data integrity gaurantees, while the latter simplifies\n" + " heuristic determination of file format. This format looks to have\n" + " reasonably widespread usage, though not quite as significant as\n" + " LZMA-Alone.\n" + "\n" + " The only implementation of this format I can find (lzip) is GPL licensed.\n" + "\n" + "3. the xz format ( http://tukaani.org/xz/xz-file-format.txt ) which is\n" + " a more complex representation that includes CRC support and a magic\n" + " number. This format is to be supported by the next iteration of\n" + " XZ Utils which is currently in beta. The source may be obtained\n" + " here: git://ctrl.tukaani.org/xz.git\n" + "\n" + " This format will address some criticisms to the LZMA-Alone format and\n" + " was developed collaboratively by Lasse Collin (the current maintainer\n" + " of XZ utils) and Igor Pavlov (the author of 7zip and the refrence\n" + " implementation of LZMA).\n" + "\n" + " The xz format will employ LZMA2 which consists of extensions on top\n" + " of LZMA, in the xz utils maintainer's words:\n" + "\n" + " \"The primary compression algorithm in .xz is currently LZMA2, which\n" + " is an extension on top of the orignal LZMA to fix a few practical\n" + " issues, like adding support for flushing the encoder (equivalent\n" + " to zlib's Z_SYNC_FLUSH), which isn't possible with the original\n" + " LZMA.\"\n" + "\n" + " Again, maintainers words, regarding licensing:\n" + "\n" + " \"XZ Utils currently contains a zlib-like compression library and a \n" + " gzip-like command line tool. It's currently under LGPLv2.1+ but I will \n" + " put it into the public domain before the first stable release.\"\n" + "\n" + "4. The 7zip disk format which can contain multiple files possibly stored in\n" + " LZMA compressed format.\n" + "\n" + "Given the state of things, the goal of this project is to develop something\n" + "based on the existing formats, and quickly leverage code generated by the XZ\n" + "Utils project, or simply kill this thing if that project produces something\n" + "that's easy to embed and has a clean API at a similar level of abstraction\n" + "as easylzma.\n" + "\n" + "lloyd - sometime in oh nine.\n"; + +/* a test that we can round trip compress/decompress data using LZMA or LZIP + * formats */ +static int roundTripTest(elzma_file_format format) +{ + int rc; + unsigned char *compressed; + unsigned char *decompressed; + size_t sz; + + rc = simpleCompress(format, (unsigned char *)sampleData, strlen(sampleData), &compressed, + &sz); + + if (rc != ELZMA_E_OK) + return rc; + + /* gross assurance that compression is actually compressing */ + if (sz > strlen(sampleData)) + { + free(compressed); + return 1; + } + + rc = simpleDecompress(format, compressed, sz, &decompressed, &sz); + + free(compressed); + + if (rc != ELZMA_E_OK) + return rc; + + if (sz != strlen(sampleData) || 0 != memcmp(decompressed, sampleData, sz)) + { + free(decompressed); + return 1; + } + + return ELZMA_E_OK; +} + +/* "correct" lzip generated from the lzip program */ +/*|LZIP...3.?..????|*/ +/*|....?e2~........|*/ +static unsigned char correctLzip[] = { + 0x4c, 0x5a, 0x49, 0x50, 0x01, 0x0c, 0x00, 0x33, 0x1b, 0xec, 0x15, 0x07, 0xff, 0xff, + 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0xa8, 0x65, 0x32, 0x7e, 0x04, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + +/* "correct" lzip generated from lzma utils */ +static unsigned char correctLzma[] = {0x5d, 0x00, 0x00, 0x80, 0x00, 0x04, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x33, 0x1b, 0xec, 0x14, 0x00, 0x00, 0x00}; + +/* lzip with a bad CRC */ +static unsigned char corruptCRC[] = { + 0x4c, 0x5a, 0x49, 0x50, 0x01, 0x0c, 0x00, 0x33, 0x1b, 0xec, 0x15, 0x07, 0xff, 0xff, + 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0xa8, 0x65, 0x31, 0x7e, 0x04, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + +/* lzip with a bad uncompressed size */ +static unsigned char corruptSize[] = { + 0x4c, 0x5a, 0x49, 0x50, 0x01, 0x0c, 0x00, 0x33, 0x1b, 0xec, 0x15, 0x07, 0xff, 0xff, + 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0xa8, 0x65, 0x32, 0x7e, 0x04, 0x01, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + +/* lzma with a bad uncompressed size */ +static unsigned char corruptSizeLzma[] = {0x5d, 0x00, 0x00, 0x80, 0x00, 0x04, 0x01, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x33, 0x1b, 0xec, 0x14, 0x00, 0x00, 0x00}; + +/* lzma with a bad uncompressed size */ +static unsigned char corruptSizeLzma2[] = {0x5d, 0x00, 0x00, 0x80, 0x00, 0x03, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x33, 0x1b, 0xec, 0x14, 0x00, 0x00, 0x00}; + +/* tests */ +static struct +{ + const char *testName; /* the name of the test */ + int expectedCode; /* the expected output of the test */ + elzma_file_format format; + unsigned char *data; /* input data */ + unsigned int dataSize; +} tests[] = { + {"correct lzip", ELZMA_E_OK, ELZMA_lzip, correctLzip, sizeof(correctLzip)}, + {"lzip as lzma", ELZMA_E_DECOMPRESS_ERROR, ELZMA_lzma, correctLzip, sizeof(correctLzip)}, + {"correct lzma", ELZMA_E_OK, ELZMA_lzma, correctLzma, sizeof(correctLzma)}, + {"lzma as lzip", ELZMA_E_CORRUPT_HEADER, ELZMA_lzip, correctLzma, sizeof(correctLzma)}, + {"corrupt crc", ELZMA_E_CRC32_MISMATCH, ELZMA_lzip, corruptCRC, sizeof(corruptCRC)}, + {"bad lzip size", ELZMA_E_SIZE_MISMATCH, ELZMA_lzip, corruptSize, sizeof(corruptSize)}, + {"bad lzma size", ELZMA_E_INSUFFICIENT_INPUT, ELZMA_lzma, + corruptSizeLzma, sizeof(corruptSizeLzma)}, + {"bad lzma size 2", ELZMA_E_SIZE_MISMATCH, ELZMA_lzma, + corruptSizeLzma2, sizeof(corruptSizeLzma2)}}; + +int main(void) +{ + unsigned int i; + unsigned int testsPassed = 0; + unsigned int testsRun = 0; + + int rc = 0; + + printf("round trip lzma test: "); + fflush(stdout); + testsRun++; + if (ELZMA_E_OK != (rc = roundTripTest(ELZMA_lzma))) + { + printf("fail! (%d)\n", rc); + } + else + { + testsPassed++; + printf("ok\n"); + } + + printf("round trip lzip test: "); + fflush(stdout); + testsRun++; + if (ELZMA_E_OK != (rc = roundTripTest(ELZMA_lzip))) + { + printf("fail (%d)!\n", rc); + } + else + { + testsPassed++; + printf("ok\n"); + } + + /* now run through the tests table */ + for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) + { + unsigned char *decompressed = NULL; + size_t sz = 0; + + printf("%s test: ", tests[i].testName); + rc = simpleDecompress(tests[i].format, tests[i].data, tests[i].dataSize, &decompressed, + &sz); + + testsRun++; + if (rc != tests[i].expectedCode) + { + printf("fail - got %d - expected %d\n", rc, tests[i].expectedCode); + } + else + { + testsPassed++; + printf("ok\n"); + free(decompressed); + } + } + + printf("\n%d/%d tests passed\n", testsPassed, testsRun); + + return (testsPassed == testsRun) ? 0 : 1; +} |