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-/*
- * 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;
-}