From 5ca28f792883afb409ae145666fc3662c3a3aed5 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 13 Mar 2015 10:40:33 -0700 Subject: Import zlib from GCC --- zlib/test/example.c | 601 +++++++++++++++++++++++++++++++++++++++++++++ zlib/test/infcover.c | 671 +++++++++++++++++++++++++++++++++++++++++++++++++++ zlib/test/minigzip.c | 631 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 1903 insertions(+) create mode 100644 zlib/test/example.c create mode 100644 zlib/test/infcover.c create mode 100644 zlib/test/minigzip.c (limited to 'zlib/test') diff --git a/zlib/test/example.c b/zlib/test/example.c new file mode 100644 index 0000000..f515a48 --- /dev/null +++ b/zlib/test/example.c @@ -0,0 +1,601 @@ +/* example.c -- usage example of the zlib compression library + * Copyright (C) 1995-2006, 2011 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#include "zlib.h" +#include + +#ifdef STDC +# include +# include +#endif + +#if defined(VMS) || defined(RISCOS) +# define TESTFILE "foo-gz" +#else +# define TESTFILE "foo.gz" +#endif + +#define CHECK_ERR(err, msg) { \ + if (err != Z_OK) { \ + fprintf(stderr, "%s error: %d\n", msg, err); \ + exit(1); \ + } \ +} + +const char hello[] = "hello, hello!"; +/* "hello world" would be more standard, but the repeated "hello" + * stresses the compression code better, sorry... + */ + +const char dictionary[] = "hello"; +uLong dictId; /* Adler32 value of the dictionary */ + +void test_deflate OF((Byte *compr, uLong comprLen)); +void test_inflate OF((Byte *compr, uLong comprLen, + Byte *uncompr, uLong uncomprLen)); +void test_large_deflate OF((Byte *compr, uLong comprLen, + Byte *uncompr, uLong uncomprLen)); +void test_large_inflate OF((Byte *compr, uLong comprLen, + Byte *uncompr, uLong uncomprLen)); +void test_flush OF((Byte *compr, uLong *comprLen)); +void test_sync OF((Byte *compr, uLong comprLen, + Byte *uncompr, uLong uncomprLen)); +void test_dict_deflate OF((Byte *compr, uLong comprLen)); +void test_dict_inflate OF((Byte *compr, uLong comprLen, + Byte *uncompr, uLong uncomprLen)); +int main OF((int argc, char *argv[])); + + +#ifdef Z_SOLO + +void *myalloc OF((void *, unsigned, unsigned)); +void myfree OF((void *, void *)); + +void *myalloc(q, n, m) + void *q; + unsigned n, m; +{ + q = Z_NULL; + return calloc(n, m); +} + +void myfree(void *q, void *p) +{ + q = Z_NULL; + free(p); +} + +static alloc_func zalloc = myalloc; +static free_func zfree = myfree; + +#else /* !Z_SOLO */ + +static alloc_func zalloc = (alloc_func)0; +static free_func zfree = (free_func)0; + +void test_compress OF((Byte *compr, uLong comprLen, + Byte *uncompr, uLong uncomprLen)); +void test_gzio OF((const char *fname, + Byte *uncompr, uLong uncomprLen)); + +/* =========================================================================== + * Test compress() and uncompress() + */ +void test_compress(compr, comprLen, uncompr, uncomprLen) + Byte *compr, *uncompr; + uLong comprLen, uncomprLen; +{ + int err; + uLong len = (uLong)strlen(hello)+1; + + err = compress(compr, &comprLen, (const Bytef*)hello, len); + CHECK_ERR(err, "compress"); + + strcpy((char*)uncompr, "garbage"); + + err = uncompress(uncompr, &uncomprLen, compr, comprLen); + CHECK_ERR(err, "uncompress"); + + if (strcmp((char*)uncompr, hello)) { + fprintf(stderr, "bad uncompress\n"); + exit(1); + } else { + printf("uncompress(): %s\n", (char *)uncompr); + } +} + +/* =========================================================================== + * Test read/write of .gz files + */ +void test_gzio(fname, uncompr, uncomprLen) + const char *fname; /* compressed file name */ + Byte *uncompr; + uLong uncomprLen; +{ +#ifdef NO_GZCOMPRESS + fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n"); +#else + int err; + int len = (int)strlen(hello)+1; + gzFile file; + z_off_t pos; + + file = gzopen(fname, "wb"); + if (file == NULL) { + fprintf(stderr, "gzopen error\n"); + exit(1); + } + gzputc(file, 'h'); + if (gzputs(file, "ello") != 4) { + fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err)); + exit(1); + } + if (gzprintf(file, ", %s!", "hello") != 8) { + fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err)); + exit(1); + } + gzseek(file, 1L, SEEK_CUR); /* add one zero byte */ + gzclose(file); + + file = gzopen(fname, "rb"); + if (file == NULL) { + fprintf(stderr, "gzopen error\n"); + exit(1); + } + strcpy((char*)uncompr, "garbage"); + + if (gzread(file, uncompr, (unsigned)uncomprLen) != len) { + fprintf(stderr, "gzread err: %s\n", gzerror(file, &err)); + exit(1); + } + if (strcmp((char*)uncompr, hello)) { + fprintf(stderr, "bad gzread: %s\n", (char*)uncompr); + exit(1); + } else { + printf("gzread(): %s\n", (char*)uncompr); + } + + pos = gzseek(file, -8L, SEEK_CUR); + if (pos != 6 || gztell(file) != pos) { + fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n", + (long)pos, (long)gztell(file)); + exit(1); + } + + if (gzgetc(file) != ' ') { + fprintf(stderr, "gzgetc error\n"); + exit(1); + } + + if (gzungetc(' ', file) != ' ') { + fprintf(stderr, "gzungetc error\n"); + exit(1); + } + + gzgets(file, (char*)uncompr, (int)uncomprLen); + if (strlen((char*)uncompr) != 7) { /* " hello!" */ + fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err)); + exit(1); + } + if (strcmp((char*)uncompr, hello + 6)) { + fprintf(stderr, "bad gzgets after gzseek\n"); + exit(1); + } else { + printf("gzgets() after gzseek: %s\n", (char*)uncompr); + } + + gzclose(file); +#endif +} + +#endif /* Z_SOLO */ + +/* =========================================================================== + * Test deflate() with small buffers + */ +void test_deflate(compr, comprLen) + Byte *compr; + uLong comprLen; +{ + z_stream c_stream; /* compression stream */ + int err; + uLong len = (uLong)strlen(hello)+1; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_in = (Bytef*)hello; + c_stream.next_out = compr; + + while (c_stream.total_in != len && c_stream.total_out < comprLen) { + c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ + err = deflate(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + } + /* Finish the stream, still forcing small buffers: */ + for (;;) { + c_stream.avail_out = 1; + err = deflate(&c_stream, Z_FINISH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "deflate"); + } + + err = deflateEnd(&c_stream); + CHECK_ERR(err, "deflateEnd"); +} + +/* =========================================================================== + * Test inflate() with small buffers + */ +void test_inflate(compr, comprLen, uncompr, uncomprLen) + Byte *compr, *uncompr; + uLong comprLen, uncomprLen; +{ + int err; + z_stream d_stream; /* decompression stream */ + + strcpy((char*)uncompr, "garbage"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (voidpf)0; + + d_stream.next_in = compr; + d_stream.avail_in = 0; + d_stream.next_out = uncompr; + + err = inflateInit(&d_stream); + CHECK_ERR(err, "inflateInit"); + + while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) { + d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */ + err = inflate(&d_stream, Z_NO_FLUSH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "inflate"); + } + + err = inflateEnd(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + if (strcmp((char*)uncompr, hello)) { + fprintf(stderr, "bad inflate\n"); + exit(1); + } else { + printf("inflate(): %s\n", (char *)uncompr); + } +} + +/* =========================================================================== + * Test deflate() with large buffers and dynamic change of compression level + */ +void test_large_deflate(compr, comprLen, uncompr, uncomprLen) + Byte *compr, *uncompr; + uLong comprLen, uncomprLen; +{ + z_stream c_stream; /* compression stream */ + int err; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + err = deflateInit(&c_stream, Z_BEST_SPEED); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_out = compr; + c_stream.avail_out = (uInt)comprLen; + + /* At this point, uncompr is still mostly zeroes, so it should compress + * very well: + */ + c_stream.next_in = uncompr; + c_stream.avail_in = (uInt)uncomprLen; + err = deflate(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + if (c_stream.avail_in != 0) { + fprintf(stderr, "deflate not greedy\n"); + exit(1); + } + + /* Feed in already compressed data and switch to no compression: */ + deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY); + c_stream.next_in = compr; + c_stream.avail_in = (uInt)comprLen/2; + err = deflate(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + + /* Switch back to compressing mode: */ + deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED); + c_stream.next_in = uncompr; + c_stream.avail_in = (uInt)uncomprLen; + err = deflate(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + + err = deflate(&c_stream, Z_FINISH); + if (err != Z_STREAM_END) { + fprintf(stderr, "deflate should report Z_STREAM_END\n"); + exit(1); + } + err = deflateEnd(&c_stream); + CHECK_ERR(err, "deflateEnd"); +} + +/* =========================================================================== + * Test inflate() with large buffers + */ +void test_large_inflate(compr, comprLen, uncompr, uncomprLen) + Byte *compr, *uncompr; + uLong comprLen, uncomprLen; +{ + int err; + z_stream d_stream; /* decompression stream */ + + strcpy((char*)uncompr, "garbage"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (voidpf)0; + + d_stream.next_in = compr; + d_stream.avail_in = (uInt)comprLen; + + err = inflateInit(&d_stream); + CHECK_ERR(err, "inflateInit"); + + for (;;) { + d_stream.next_out = uncompr; /* discard the output */ + d_stream.avail_out = (uInt)uncomprLen; + err = inflate(&d_stream, Z_NO_FLUSH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "large inflate"); + } + + err = inflateEnd(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + if (d_stream.total_out != 2*uncomprLen + comprLen/2) { + fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out); + exit(1); + } else { + printf("large_inflate(): OK\n"); + } +} + +/* =========================================================================== + * Test deflate() with full flush + */ +void test_flush(compr, comprLen) + Byte *compr; + uLong *comprLen; +{ + z_stream c_stream; /* compression stream */ + int err; + uInt len = (uInt)strlen(hello)+1; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_in = (Bytef*)hello; + c_stream.next_out = compr; + c_stream.avail_in = 3; + c_stream.avail_out = (uInt)*comprLen; + err = deflate(&c_stream, Z_FULL_FLUSH); + CHECK_ERR(err, "deflate"); + + compr[3]++; /* force an error in first compressed block */ + c_stream.avail_in = len - 3; + + err = deflate(&c_stream, Z_FINISH); + if (err != Z_STREAM_END) { + CHECK_ERR(err, "deflate"); + } + err = deflateEnd(&c_stream); + CHECK_ERR(err, "deflateEnd"); + + *comprLen = c_stream.total_out; +} + +/* =========================================================================== + * Test inflateSync() + */ +void test_sync(compr, comprLen, uncompr, uncomprLen) + Byte *compr, *uncompr; + uLong comprLen, uncomprLen; +{ + int err; + z_stream d_stream; /* decompression stream */ + + strcpy((char*)uncompr, "garbage"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (voidpf)0; + + d_stream.next_in = compr; + d_stream.avail_in = 2; /* just read the zlib header */ + + err = inflateInit(&d_stream); + CHECK_ERR(err, "inflateInit"); + + d_stream.next_out = uncompr; + d_stream.avail_out = (uInt)uncomprLen; + + inflate(&d_stream, Z_NO_FLUSH); + CHECK_ERR(err, "inflate"); + + d_stream.avail_in = (uInt)comprLen-2; /* read all compressed data */ + err = inflateSync(&d_stream); /* but skip the damaged part */ + CHECK_ERR(err, "inflateSync"); + + err = inflate(&d_stream, Z_FINISH); + if (err != Z_DATA_ERROR) { + fprintf(stderr, "inflate should report DATA_ERROR\n"); + /* Because of incorrect adler32 */ + exit(1); + } + err = inflateEnd(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + printf("after inflateSync(): hel%s\n", (char *)uncompr); +} + +/* =========================================================================== + * Test deflate() with preset dictionary + */ +void test_dict_deflate(compr, comprLen) + Byte *compr; + uLong comprLen; +{ + z_stream c_stream; /* compression stream */ + int err; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + err = deflateInit(&c_stream, Z_BEST_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + err = deflateSetDictionary(&c_stream, + (const Bytef*)dictionary, (int)sizeof(dictionary)); + CHECK_ERR(err, "deflateSetDictionary"); + + dictId = c_stream.adler; + c_stream.next_out = compr; + c_stream.avail_out = (uInt)comprLen; + + c_stream.next_in = (Bytef*)hello; + c_stream.avail_in = (uInt)strlen(hello)+1; + + err = deflate(&c_stream, Z_FINISH); + if (err != Z_STREAM_END) { + fprintf(stderr, "deflate should report Z_STREAM_END\n"); + exit(1); + } + err = deflateEnd(&c_stream); + CHECK_ERR(err, "deflateEnd"); +} + +/* =========================================================================== + * Test inflate() with a preset dictionary + */ +void test_dict_inflate(compr, comprLen, uncompr, uncomprLen) + Byte *compr, *uncompr; + uLong comprLen, uncomprLen; +{ + int err; + z_stream d_stream; /* decompression stream */ + + strcpy((char*)uncompr, "garbage"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (voidpf)0; + + d_stream.next_in = compr; + d_stream.avail_in = (uInt)comprLen; + + err = inflateInit(&d_stream); + CHECK_ERR(err, "inflateInit"); + + d_stream.next_out = uncompr; + d_stream.avail_out = (uInt)uncomprLen; + + for (;;) { + err = inflate(&d_stream, Z_NO_FLUSH); + if (err == Z_STREAM_END) break; + if (err == Z_NEED_DICT) { + if (d_stream.adler != dictId) { + fprintf(stderr, "unexpected dictionary"); + exit(1); + } + err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary, + (int)sizeof(dictionary)); + } + CHECK_ERR(err, "inflate with dict"); + } + + err = inflateEnd(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + if (strcmp((char*)uncompr, hello)) { + fprintf(stderr, "bad inflate with dict\n"); + exit(1); + } else { + printf("inflate with dictionary: %s\n", (char *)uncompr); + } +} + +/* =========================================================================== + * Usage: example [output.gz [input.gz]] + */ + +int main(argc, argv) + int argc; + char *argv[]; +{ + Byte *compr, *uncompr; + uLong comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */ + uLong uncomprLen = comprLen; + static const char* myVersion = ZLIB_VERSION; + + if (zlibVersion()[0] != myVersion[0]) { + fprintf(stderr, "incompatible zlib version\n"); + exit(1); + + } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) { + fprintf(stderr, "warning: different zlib version\n"); + } + + printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n", + ZLIB_VERSION, ZLIB_VERNUM, zlibCompileFlags()); + + compr = (Byte*)calloc((uInt)comprLen, 1); + uncompr = (Byte*)calloc((uInt)uncomprLen, 1); + /* compr and uncompr are cleared to avoid reading uninitialized + * data and to ensure that uncompr compresses well. + */ + if (compr == Z_NULL || uncompr == Z_NULL) { + printf("out of memory\n"); + exit(1); + } + +#ifdef Z_SOLO + argc = strlen(argv[0]); +#else + test_compress(compr, comprLen, uncompr, uncomprLen); + + test_gzio((argc > 1 ? argv[1] : TESTFILE), + uncompr, uncomprLen); +#endif + + test_deflate(compr, comprLen); + test_inflate(compr, comprLen, uncompr, uncomprLen); + + test_large_deflate(compr, comprLen, uncompr, uncomprLen); + test_large_inflate(compr, comprLen, uncompr, uncomprLen); + + test_flush(compr, &comprLen); + test_sync(compr, comprLen, uncompr, uncomprLen); + comprLen = uncomprLen; + + test_dict_deflate(compr, comprLen); + test_dict_inflate(compr, comprLen, uncompr, uncomprLen); + + free(compr); + free(uncompr); + + return 0; +} diff --git a/zlib/test/infcover.c b/zlib/test/infcover.c new file mode 100644 index 0000000..fe3d920 --- /dev/null +++ b/zlib/test/infcover.c @@ -0,0 +1,671 @@ +/* infcover.c -- test zlib's inflate routines with full code coverage + * Copyright (C) 2011 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* to use, do: ./configure --cover && make cover */ + +#include +#include +#include +#include +#include "zlib.h" + +/* get definition of internal structure so we can mess with it (see pull()), + and so we can call inflate_trees() (see cover5()) */ +#define ZLIB_INTERNAL +#include "inftrees.h" +#include "inflate.h" + +#define local static + +/* -- memory tracking routines -- */ + +/* + These memory tracking routines are provided to zlib and track all of zlib's + allocations and deallocations, check for LIFO operations, keep a current + and high water mark of total bytes requested, optionally set a limit on the + total memory that can be allocated, and when done check for memory leaks. + + They are used as follows: + + z_stream strm; + mem_setup(&strm) initializes the memory tracking and sets the + zalloc, zfree, and opaque members of strm to use + memory tracking for all zlib operations on strm + mem_limit(&strm, limit) sets a limit on the total bytes requested -- a + request that exceeds this limit will result in an + allocation failure (returns NULL) -- setting the + limit to zero means no limit, which is the default + after mem_setup() + mem_used(&strm, "msg") prints to stderr "msg" and the total bytes used + mem_high(&strm, "msg") prints to stderr "msg" and the high water mark + mem_done(&strm, "msg") ends memory tracking, releases all allocations + for the tracking as well as leaked zlib blocks, if + any. If there was anything unusual, such as leaked + blocks, non-FIFO frees, or frees of addresses not + allocated, then "msg" and information about the + problem is printed to stderr. If everything is + normal, nothing is printed. mem_done resets the + strm members to Z_NULL to use the default memory + allocation routines on the next zlib initialization + using strm. + */ + +/* these items are strung together in a linked list, one for each allocation */ +struct mem_item { + void *ptr; /* pointer to allocated memory */ + size_t size; /* requested size of allocation */ + struct mem_item *next; /* pointer to next item in list, or NULL */ +}; + +/* this structure is at the root of the linked list, and tracks statistics */ +struct mem_zone { + struct mem_item *first; /* pointer to first item in list, or NULL */ + size_t total, highwater; /* total allocations, and largest total */ + size_t limit; /* memory allocation limit, or 0 if no limit */ + int notlifo, rogue; /* counts of non-LIFO frees and rogue frees */ +}; + +/* memory allocation routine to pass to zlib */ +local void *mem_alloc(void *mem, unsigned count, unsigned size) +{ + void *ptr; + struct mem_item *item; + struct mem_zone *zone = mem; + size_t len = count * (size_t)size; + + /* induced allocation failure */ + if (zone == NULL || (zone->limit && zone->total + len > zone->limit)) + return NULL; + + /* perform allocation using the standard library, fill memory with a + non-zero value to make sure that the code isn't depending on zeros */ + ptr = malloc(len); + if (ptr == NULL) + return NULL; + memset(ptr, 0xa5, len); + + /* create a new item for the list */ + item = malloc(sizeof(struct mem_item)); + if (item == NULL) { + free(ptr); + return NULL; + } + item->ptr = ptr; + item->size = len; + + /* insert item at the beginning of the list */ + item->next = zone->first; + zone->first = item; + + /* update the statistics */ + zone->total += item->size; + if (zone->total > zone->highwater) + zone->highwater = zone->total; + + /* return the allocated memory */ + return ptr; +} + +/* memory free routine to pass to zlib */ +local void mem_free(void *mem, void *ptr) +{ + struct mem_item *item, *next; + struct mem_zone *zone = mem; + + /* if no zone, just do a free */ + if (zone == NULL) { + free(ptr); + return; + } + + /* point next to the item that matches ptr, or NULL if not found -- remove + the item from the linked list if found */ + next = zone->first; + if (next) { + if (next->ptr == ptr) + zone->first = next->next; /* first one is it, remove from list */ + else { + do { /* search the linked list */ + item = next; + next = item->next; + } while (next != NULL && next->ptr != ptr); + if (next) { /* if found, remove from linked list */ + item->next = next->next; + zone->notlifo++; /* not a LIFO free */ + } + + } + } + + /* if found, update the statistics and free the item */ + if (next) { + zone->total -= next->size; + free(next); + } + + /* if not found, update the rogue count */ + else + zone->rogue++; + + /* in any case, do the requested free with the standard library function */ + free(ptr); +} + +/* set up a controlled memory allocation space for monitoring, set the stream + parameters to the controlled routines, with opaque pointing to the space */ +local void mem_setup(z_stream *strm) +{ + struct mem_zone *zone; + + zone = malloc(sizeof(struct mem_zone)); + assert(zone != NULL); + zone->first = NULL; + zone->total = 0; + zone->highwater = 0; + zone->limit = 0; + zone->notlifo = 0; + zone->rogue = 0; + strm->opaque = zone; + strm->zalloc = mem_alloc; + strm->zfree = mem_free; +} + +/* set a limit on the total memory allocation, or 0 to remove the limit */ +local void mem_limit(z_stream *strm, size_t limit) +{ + struct mem_zone *zone = strm->opaque; + + zone->limit = limit; +} + +/* show the current total requested allocations in bytes */ +local void mem_used(z_stream *strm, char *prefix) +{ + struct mem_zone *zone = strm->opaque; + + fprintf(stderr, "%s: %lu allocated\n", prefix, zone->total); +} + +/* show the high water allocation in bytes */ +local void mem_high(z_stream *strm, char *prefix) +{ + struct mem_zone *zone = strm->opaque; + + fprintf(stderr, "%s: %lu high water mark\n", prefix, zone->highwater); +} + +/* release the memory allocation zone -- if there are any surprises, notify */ +local void mem_done(z_stream *strm, char *prefix) +{ + int count = 0; + struct mem_item *item, *next; + struct mem_zone *zone = strm->opaque; + + /* show high water mark */ + mem_high(strm, prefix); + + /* free leftover allocations and item structures, if any */ + item = zone->first; + while (item != NULL) { + free(item->ptr); + next = item->next; + free(item); + item = next; + count++; + } + + /* issue alerts about anything unexpected */ + if (count || zone->total) + fprintf(stderr, "** %s: %lu bytes in %d blocks not freed\n", + prefix, zone->total, count); + if (zone->notlifo) + fprintf(stderr, "** %s: %d frees not LIFO\n", prefix, zone->notlifo); + if (zone->rogue) + fprintf(stderr, "** %s: %d frees not recognized\n", + prefix, zone->rogue); + + /* free the zone and delete from the stream */ + free(zone); + strm->opaque = Z_NULL; + strm->zalloc = Z_NULL; + strm->zfree = Z_NULL; +} + +/* -- inflate test routines -- */ + +/* Decode a hexadecimal string, set *len to length, in[] to the bytes. This + decodes liberally, in that hex digits can be adjacent, in which case two in + a row writes a byte. Or they can delimited by any non-hex character, where + the delimiters are ignored except when a single hex digit is followed by a + delimiter in which case that single digit writes a byte. The returned + data is allocated and must eventually be freed. NULL is returned if out of + memory. If the length is not needed, then len can be NULL. */ +local unsigned char *h2b(const char *hex, unsigned *len) +{ + unsigned char *in; + unsigned next, val; + + in = malloc((strlen(hex) + 1) >> 1); + if (in == NULL) + return NULL; + next = 0; + val = 1; + do { + if (*hex >= '0' && *hex <= '9') + val = (val << 4) + *hex - '0'; + else if (*hex >= 'A' && *hex <= 'F') + val = (val << 4) + *hex - 'A' + 10; + else if (*hex >= 'a' && *hex <= 'f') + val = (val << 4) + *hex - 'a' + 10; + else if (val != 1 && val < 32) /* one digit followed by delimiter */ + val += 240; /* make it look like two digits */ + if (val > 255) { /* have two digits */ + in[next++] = val & 0xff; /* save the decoded byte */ + val = 1; /* start over */ + } + } while (*hex++); /* go through the loop with the terminating null */ + if (len != NULL) + *len = next; + in = reallocf(in, next); + return in; +} + +/* generic inflate() run, where hex is the hexadecimal input data, what is the + text to include in an error message, step is how much input data to feed + inflate() on each call, or zero to feed it all, win is the window bits + parameter to inflateInit2(), len is the size of the output buffer, and err + is the error code expected from the first inflate() call (the second + inflate() call is expected to return Z_STREAM_END). If win is 47, then + header information is collected with inflateGetHeader(). If a zlib stream + is looking for a dictionary, then an empty dictionary is provided. + inflate() is run until all of the input data is consumed. */ +local void inf(char *hex, char *what, unsigned step, int win, unsigned len, + int err) +{ + int ret; + unsigned have; + unsigned char *in, *out; + z_stream strm, copy; + gz_header head; + + mem_setup(&strm); + strm.avail_in = 0; + strm.next_in = Z_NULL; + ret = inflateInit2(&strm, win); + if (ret != Z_OK) { + mem_done(&strm, what); + return; + } + out = malloc(len); assert(out != NULL); + if (win == 47) { + head.extra = out; + head.extra_max = len; + head.name = out; + head.name_max = len; + head.comment = out; + head.comm_max = len; + ret = inflateGetHeader(&strm, &head); assert(ret == Z_OK); + } + in = h2b(hex, &have); assert(in != NULL); + if (step == 0 || step > have) + step = have; + strm.avail_in = step; + have -= step; + strm.next_in = in; + do { + strm.avail_out = len; + strm.next_out = out; + ret = inflate(&strm, Z_NO_FLUSH); assert(err == 9 || ret == err); + if (ret != Z_OK && ret != Z_BUF_ERROR && ret != Z_NEED_DICT) + break; + if (ret == Z_NEED_DICT) { + ret = inflateSetDictionary(&strm, in, 1); + assert(ret == Z_DATA_ERROR); + mem_limit(&strm, 1); + ret = inflateSetDictionary(&strm, out, 0); + assert(ret == Z_MEM_ERROR); + mem_limit(&strm, 0); + ((struct inflate_state *)strm.state)->mode = DICT; + ret = inflateSetDictionary(&strm, out, 0); + assert(ret == Z_OK); + ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_BUF_ERROR); + } + ret = inflateCopy(©, &strm); assert(ret == Z_OK); + ret = inflateEnd(©); assert(ret == Z_OK); + err = 9; /* don't care next time around */ + have += strm.avail_in; + strm.avail_in = step > have ? have : step; + have -= strm.avail_in; + } while (strm.avail_in); + free(in); + free(out); + ret = inflateReset2(&strm, -8); assert(ret == Z_OK); + ret = inflateEnd(&strm); assert(ret == Z_OK); + mem_done(&strm, what); +} + +/* cover all of the lines in inflate.c up to inflate() */ +local void cover_support(void) +{ + int ret; + z_stream strm; + + mem_setup(&strm); + strm.avail_in = 0; + strm.next_in = Z_NULL; + ret = inflateInit(&strm); assert(ret == Z_OK); + mem_used(&strm, "inflate init"); + ret = inflatePrime(&strm, 5, 31); assert(ret == Z_OK); + ret = inflatePrime(&strm, -1, 0); assert(ret == Z_OK); + ret = inflateSetDictionary(&strm, Z_NULL, 0); + assert(ret == Z_STREAM_ERROR); + ret = inflateEnd(&strm); assert(ret == Z_OK); + mem_done(&strm, "prime"); + + inf("63 0", "force window allocation", 0, -15, 1, Z_OK); + inf("63 18 5", "force window replacement", 0, -8, 259, Z_OK); + inf("63 18 68 30 d0 0 0", "force split window update", 4, -8, 259, Z_OK); + inf("3 0", "use fixed blocks", 0, -15, 1, Z_STREAM_END); + inf("", "bad window size", 0, 1, 0, Z_STREAM_ERROR); + + mem_setup(&strm); + strm.avail_in = 0; + strm.next_in = Z_NULL; + ret = inflateInit_(&strm, ZLIB_VERSION - 1, (int)sizeof(z_stream)); + assert(ret == Z_VERSION_ERROR); + mem_done(&strm, "wrong version"); + + strm.avail_in = 0; + strm.next_in = Z_NULL; + ret = inflateInit(&strm); assert(ret == Z_OK); + ret = inflateEnd(&strm); assert(ret == Z_OK); + fputs("inflate built-in memory routines\n", stderr); +} + +/* cover all inflate() header and trailer cases and code after inflate() */ +local void cover_wrap(void) +{ + int ret; + z_stream strm, copy; + unsigned char dict[257]; + + ret = inflate(Z_NULL, 0); assert(ret == Z_STREAM_ERROR); + ret = inflateEnd(Z_NULL); assert(ret == Z_STREAM_ERROR); + ret = inflateCopy(Z_NULL, Z_NULL); assert(ret == Z_STREAM_ERROR); + fputs("inflate bad parameters\n", stderr); + + inf("1f 8b 0 0", "bad gzip method", 0, 31, 0, Z_DATA_ERROR); + inf("1f 8b 8 80", "bad gzip flags", 0, 31, 0, Z_DATA_ERROR); + inf("77 85", "bad zlib method", 0, 15, 0, Z_DATA_ERROR); + inf("8 99", "set window size from header", 0, 0, 0, Z_OK); + inf("78 9c", "bad zlib window size", 0, 8, 0, Z_DATA_ERROR); + inf("78 9c 63 0 0 0 1 0 1", "check adler32", 0, 15, 1, Z_STREAM_END); + inf("1f 8b 8 1e 0 0 0 0 0 0 1 0 0 0 0 0 0", "bad header crc", 0, 47, 1, + Z_DATA_ERROR); + inf("1f 8b 8 2 0 0 0 0 0 0 1d 26 3 0 0 0 0 0 0 0 0 0", "check gzip length", + 0, 47, 0, Z_STREAM_END); + inf("78 90", "bad zlib header check", 0, 47, 0, Z_DATA_ERROR); + inf("8 b8 0 0 0 1", "need dictionary", 0, 8, 0, Z_NEED_DICT); + inf("78 9c 63 0", "compute adler32", 0, 15, 1, Z_OK); + + mem_setup(&strm); + strm.avail_in = 0; + strm.next_in = Z_NULL; + ret = inflateInit2(&strm, -8); + strm.avail_in = 2; + strm.next_in = (void *)"\x63"; + strm.avail_out = 1; + strm.next_out = (void *)&ret; + mem_limit(&strm, 1); + ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR); + ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR); + mem_limit(&strm, 0); + memset(dict, 0, 257); + ret = inflateSetDictionary(&strm, dict, 257); + assert(ret == Z_OK); + mem_limit(&strm, (sizeof(struct inflate_state) << 1) + 256); + ret = inflatePrime(&strm, 16, 0); assert(ret == Z_OK); + strm.avail_in = 2; + strm.next_in = (void *)"\x80"; + ret = inflateSync(&strm); assert(ret == Z_DATA_ERROR); + ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_STREAM_ERROR); + strm.avail_in = 4; + strm.next_in = (void *)"\0\0\xff\xff"; + ret = inflateSync(&strm); assert(ret == Z_OK); + (void)inflateSyncPoint(&strm); + ret = inflateCopy(©, &strm); assert(ret == Z_MEM_ERROR); + mem_limit(&strm, 0); + ret = inflateUndermine(&strm, 1); assert(ret == Z_DATA_ERROR); + (void)inflateMark(&strm); + ret = inflateEnd(&strm); assert(ret == Z_OK); + mem_done(&strm, "miscellaneous, force memory errors"); +} + +/* input and output functions for inflateBack() */ +local unsigned pull(void *desc, unsigned char **buf) +{ + static unsigned int next = 0; + static unsigned char dat[] = {0x63, 0, 2, 0}; + struct inflate_state *state; + + if (desc == Z_NULL) { + next = 0; + return 0; /* no input (already provided at next_in) */ + } + state = (void *)((z_stream *)desc)->state; + if (state != Z_NULL) + state->mode = SYNC; /* force an otherwise impossible situation */ + return next < sizeof(dat) ? (*buf = dat + next++, 1) : 0; +} + +local int push(void *desc, unsigned char *buf, unsigned len) +{ + buf += len; + return desc != Z_NULL; /* force error if desc not null */ +} + +/* cover inflateBack() up to common deflate data cases and after those */ +local void cover_back(void) +{ + int ret; + z_stream strm; + unsigned char win[32768]; + + ret = inflateBackInit_(Z_NULL, 0, win, 0, 0); + assert(ret == Z_VERSION_ERROR); + ret = inflateBackInit(Z_NULL, 0, win); assert(ret == Z_STREAM_ERROR); + ret = inflateBack(Z_NULL, Z_NULL, Z_NULL, Z_NULL, Z_NULL); + assert(ret == Z_STREAM_ERROR); + ret = inflateBackEnd(Z_NULL); assert(ret == Z_STREAM_ERROR); + fputs("inflateBack bad parameters\n", stderr); + + mem_setup(&strm); + ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK); + strm.avail_in = 2; + strm.next_in = (void *)"\x03"; + ret = inflateBack(&strm, pull, Z_NULL, push, Z_NULL); + assert(ret == Z_STREAM_END); + /* force output error */ + strm.avail_in = 3; + strm.next_in = (void *)"\x63\x00"; + ret = inflateBack(&strm, pull, Z_NULL, push, &strm); + assert(ret == Z_BUF_ERROR); + /* force mode error by mucking with state */ + ret = inflateBack(&strm, pull, &strm, push, Z_NULL); + assert(ret == Z_STREAM_ERROR); + ret = inflateBackEnd(&strm); assert(ret == Z_OK); + mem_done(&strm, "inflateBack bad state"); + + ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK); + ret = inflateBackEnd(&strm); assert(ret == Z_OK); + fputs("inflateBack built-in memory routines\n", stderr); +} + +/* do a raw inflate of data in hexadecimal with both inflate and inflateBack */ +local int try(char *hex, char *id, int err) +{ + int ret; + unsigned len, size; + unsigned char *in, *out, *win; + char *prefix; + z_stream strm; + + /* convert to hex */ + in = h2b(hex, &len); + assert(in != NULL); + + /* allocate work areas */ + size = len << 3; + out = malloc(size); + assert(out != NULL); + win = malloc(32768); + assert(win != NULL); + prefix = malloc(strlen(id) + 6); + assert(prefix != NULL); + + /* first with inflate */ + strcpy(prefix, id); + strcat(prefix, "-late"); + mem_setup(&strm); + strm.avail_in = 0; + strm.next_in = Z_NULL; + ret = inflateInit2(&strm, err < 0 ? 47 : -15); + assert(ret == Z_OK); + strm.avail_in = len; + strm.next_in = in; + do { + strm.avail_out = size; + strm.next_out = out; + ret = inflate(&strm, Z_TREES); + assert(ret != Z_STREAM_ERROR && ret != Z_MEM_ERROR); + if (ret == Z_DATA_ERROR || ret == Z_NEED_DICT) + break; + } while (strm.avail_in || strm.avail_out == 0); + if (err) { + assert(ret == Z_DATA_ERROR); + assert(strcmp(id, strm.msg) == 0); + } + inflateEnd(&strm); + mem_done(&strm, prefix); + + /* then with inflateBack */ + if (err >= 0) { + strcpy(prefix, id); + strcat(prefix, "-back"); + mem_setup(&strm); + ret = inflateBackInit(&strm, 15, win); + assert(ret == Z_OK); + strm.avail_in = len; + strm.next_in = in; + ret = inflateBack(&strm, pull, Z_NULL, push, Z_NULL); + assert(ret != Z_STREAM_ERROR); + if (err) { + assert(ret == Z_DATA_ERROR); + assert(strcmp(id, strm.msg) == 0); + } + inflateBackEnd(&strm); + mem_done(&strm, prefix); + } + + /* clean up */ + free(prefix); + free(win); + free(out); + free(in); + return ret; +} + +/* cover deflate data cases in both inflate() and inflateBack() */ +local void cover_inflate(void) +{ + try("0 0 0 0 0", "invalid stored block lengths", 1); + try("3 0", "fixed", 0); + try("6", "invalid block type", 1); + try("1 1 0 fe ff 0", "stored", 0); + try("fc 0 0", "too many length or distance symbols", 1); + try("4 0 fe ff", "invalid code lengths set", 1); + try("4 0 24 49 0", "invalid bit length repeat", 1); + try("4 0 24 e9 ff ff", "invalid bit length repeat", 1); + try("4 0 24 e9 ff 6d", "invalid code -- missing end-of-block", 1); + try("4 80 49 92 24 49 92 24 71 ff ff 93 11 0", + "invalid literal/lengths set", 1); + try("4 80 49 92 24 49 92 24 f b4 ff ff c3 84", "invalid distances set", 1); + try("4 c0 81 8 0 0 0 0 20 7f eb b 0 0", "invalid literal/length code", 1); + try("2 7e ff ff", "invalid distance code", 1); + try("c c0 81 0 0 0 0 0 90 ff 6b 4 0", "invalid distance too far back", 1); + + /* also trailer mismatch just in inflate() */ + try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 1", "incorrect data check", -1); + try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 1", + "incorrect length check", -1); + try("5 c0 21 d 0 0 0 80 b0 fe 6d 2f 91 6c", "pull 17", 0); + try("5 e0 81 91 24 cb b2 2c 49 e2 f 2e 8b 9a 47 56 9f fb fe ec d2 ff 1f", + "long code", 0); + try("ed c0 1 1 0 0 0 40 20 ff 57 1b 42 2c 4f", "length extra", 0); + try("ed cf c1 b1 2c 47 10 c4 30 fa 6f 35 1d 1 82 59 3d fb be 2e 2a fc f c", + "long distance and extra", 0); + try("ed c0 81 0 0 0 0 80 a0 fd a9 17 a9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 " + "0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6", "window end", 0); + inf("2 8 20 80 0 3 0", "inflate_fast TYPE return", 0, -15, 258, + Z_STREAM_END); + inf("63 18 5 40 c 0", "window wrap", 3, -8, 300, Z_OK); +} + +/* cover remaining lines in inftrees.c */ +local void cover_trees(void) +{ + int ret; + unsigned bits; + unsigned short lens[16], work[16]; + code *next, table[ENOUGH_DISTS]; + + /* we need to call inflate_table() directly in order to manifest not- + enough errors, since zlib insures that enough is always enough */ + for (bits = 0; bits < 15; bits++) + lens[bits] = (unsigned short)(bits + 1); + lens[15] = 15; + next = table; + bits = 15; + ret = inflate_table(DISTS, lens, 16, &next, &bits, work); + assert(ret == 1); + next = table; + bits = 1; + ret = inflate_table(DISTS, lens, 16, &next, &bits, work); + assert(ret == 1); + fputs("inflate_table not enough errors\n", stderr); +} + +/* cover remaining inffast.c decoding and window copying */ +local void cover_fast(void) +{ + inf("e5 e0 81 ad 6d cb b2 2c c9 01 1e 59 63 ae 7d ee fb 4d fd b5 35 41 68" + " ff 7f 0f 0 0 0", "fast length extra bits", 0, -8, 258, Z_DATA_ERROR); + inf("25 fd 81 b5 6d 59 b6 6a 49 ea af 35 6 34 eb 8c b9 f6 b9 1e ef 67 49" + " 50 fe ff ff 3f 0 0", "fast distance extra bits", 0, -8, 258, + Z_DATA_ERROR); + inf("3 7e 0 0 0 0 0", "fast invalid distance code", 0, -8, 258, + Z_DATA_ERROR); + inf("1b 7 0 0 0 0 0", "fast invalid literal/length code", 0, -8, 258, + Z_DATA_ERROR); + inf("d c7 1 ae eb 38 c 4 41 a0 87 72 de df fb 1f b8 36 b1 38 5d ff ff 0", + "fast 2nd level codes and too far back", 0, -8, 258, Z_DATA_ERROR); + inf("63 18 5 8c 10 8 0 0 0 0", "very common case", 0, -8, 259, Z_OK); + inf("63 60 60 18 c9 0 8 18 18 18 26 c0 28 0 29 0 0 0", + "contiguous and wrap around window", 6, -8, 259, Z_OK); + inf("63 0 3 0 0 0 0 0", "copy direct from output", 0, -8, 259, + Z_STREAM_END); +} + +int main(void) +{ + fprintf(stderr, "%s\n", zlibVersion()); + cover_support(); + cover_wrap(); + cover_back(); + cover_inflate(); + cover_trees(); + cover_fast(); + return 0; +} diff --git a/zlib/test/minigzip.c b/zlib/test/minigzip.c new file mode 100644 index 0000000..aa7ac7a --- /dev/null +++ b/zlib/test/minigzip.c @@ -0,0 +1,631 @@ +/* minigzip.c -- simulate gzip using the zlib compression library + * Copyright (C) 1995-2006, 2010, 2011 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* + * minigzip is a minimal implementation of the gzip utility. This is + * only an example of using zlib and isn't meant to replace the + * full-featured gzip. No attempt is made to deal with file systems + * limiting names to 14 or 8+3 characters, etc... Error checking is + * very limited. So use minigzip only for testing; use gzip for the + * real thing. On MSDOS, use only on file names without extension + * or in pipe mode. + */ + +/* @(#) $Id$ */ + +#include "zlib.h" +#include + +#ifdef STDC +# include +# include +#endif + +#ifdef USE_MMAP +# include +# include +# include +#endif + +#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__) +# include +# include +# ifdef UNDER_CE +# include +# endif +# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) +#else +# define SET_BINARY_MODE(file) +#endif + +#ifdef VMS +# define unlink delete +# define GZ_SUFFIX "-gz" +#endif +#ifdef RISCOS +# define unlink remove +# define GZ_SUFFIX "-gz" +# define fileno(file) file->__file +#endif +#if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os +# include /* for fileno */ +#endif + +#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE) +#ifndef WIN32 /* unlink already in stdio.h for WIN32 */ + extern int unlink OF((const char *)); +#endif +#endif + +#if defined(UNDER_CE) +# include +# define perror(s) pwinerror(s) + +/* Map the Windows error number in ERROR to a locale-dependent error + message string and return a pointer to it. Typically, the values + for ERROR come from GetLastError. + + The string pointed to shall not be modified by the application, + but may be overwritten by a subsequent call to strwinerror + + The strwinerror function does not change the current setting + of GetLastError. */ + +static char *strwinerror (error) + DWORD error; +{ + static char buf[1024]; + + wchar_t *msgbuf; + DWORD lasterr = GetLastError(); + DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM + | FORMAT_MESSAGE_ALLOCATE_BUFFER, + NULL, + error, + 0, /* Default language */ + (LPVOID)&msgbuf, + 0, + NULL); + if (chars != 0) { + /* If there is an \r\n appended, zap it. */ + if (chars >= 2 + && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') { + chars -= 2; + msgbuf[chars] = 0; + } + + if (chars > sizeof (buf) - 1) { + chars = sizeof (buf) - 1; + msgbuf[chars] = 0; + } + + wcstombs(buf, msgbuf, chars + 1); + LocalFree(msgbuf); + } + else { + sprintf(buf, "unknown win32 error (%ld)", error); + } + + SetLastError(lasterr); + return buf; +} + +static void pwinerror (s) + const char *s; +{ + if (s && *s) + fprintf(stderr, "%s: %s\n", s, strwinerror(GetLastError ())); + else + fprintf(stderr, "%s\n", strwinerror(GetLastError ())); +} + +#endif /* UNDER_CE */ + +#ifndef GZ_SUFFIX +# define GZ_SUFFIX ".gz" +#endif +#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1) + +#define BUFLEN 16384 +#define MAX_NAME_LEN 1024 + +#ifdef MAXSEG_64K +# define local static + /* Needed for systems with limitation on stack size. */ +#else +# define local +#endif + +#ifdef Z_SOLO +/* for Z_SOLO, create simplified gz* functions using deflate and inflate */ + +#if defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE) +# include /* for unlink() */ +#endif + +void *myalloc OF((void *, unsigned, unsigned)); +void myfree OF((void *, void *)); + +void *myalloc(q, n, m) + void *q; + unsigned n, m; +{ + q = Z_NULL; + return calloc(n, m); +} + +void myfree(q, p) + void *q, *p; +{ + q = Z_NULL; + free(p); +} + +typedef struct gzFile_s { + FILE *file; + int write; + int err; + char *msg; + z_stream strm; +} *gzFile; + +gzFile gzopen OF((const char *, const char *)); +gzFile gzdopen OF((int, const char *)); +gzFile gz_open OF((const char *, int, const char *)); + +gzFile gzopen(path, mode) +const char *path; +const char *mode; +{ + return gz_open(path, -1, mode); +} + +gzFile gzdopen(fd, mode) +int fd; +const char *mode; +{ + return gz_open(NULL, fd, mode); +} + +gzFile gz_open(path, fd, mode) + const char *path; + int fd; + const char *mode; +{ + gzFile gz; + int ret; + + gz = malloc(sizeof(struct gzFile_s)); + if (gz == NULL) + return NULL; + gz->write = strchr(mode, 'w') != NULL; + gz->strm.zalloc = myalloc; + gz->strm.zfree = myfree; + gz->strm.opaque = Z_NULL; + if (gz->write) + ret = deflateInit2(&(gz->strm), -1, 8, 15 + 16, 8, 0); + else { + gz->strm.next_in = 0; + gz->strm.avail_in = Z_NULL; + ret = inflateInit2(&(gz->strm), 15 + 16); + } + if (ret != Z_OK) { + free(gz); + return NULL; + } + gz->file = path == NULL ? fdopen(fd, gz->write ? "wb" : "rb") : + fopen(path, gz->write ? "wb" : "rb"); + if (gz->file == NULL) { + gz->write ? deflateEnd(&(gz->strm)) : inflateEnd(&(gz->strm)); + free(gz); + return NULL; + } + gz->err = 0; + gz->msg = ""; + return gz; +} + +int gzwrite OF((gzFile, const void *, unsigned)); + +int gzwrite(gz, buf, len) + gzFile gz; + const void *buf; + unsigned len; +{ + z_stream *strm; + unsigned char out[BUFLEN]; + + if (gz == NULL || !gz->write) + return 0; + strm = &(gz->strm); + strm->next_in = (void *)buf; + strm->avail_in = len; + do { + strm->next_out = out; + strm->avail_out = BUFLEN; + (void)deflate(strm, Z_NO_FLUSH); + fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); + } while (strm->avail_out == 0); + return len; +} + +int gzread OF((gzFile, void *, unsigned)); + +int gzread(gz, buf, len) + gzFile gz; + void *buf; + unsigned len; +{ + int ret; + unsigned got; + unsigned char in[1]; + z_stream *strm; + + if (gz == NULL || gz->write) + return 0; + if (gz->err) + return 0; + strm = &(gz->strm); + strm->next_out = (void *)buf; + strm->avail_out = len; + do { + got = fread(in, 1, 1, gz->file); + if (got == 0) + break; + strm->next_in = in; + strm->avail_in = 1; + ret = inflate(strm, Z_NO_FLUSH); + if (ret == Z_DATA_ERROR) { + gz->err = Z_DATA_ERROR; + gz->msg = strm->msg; + return 0; + } + if (ret == Z_STREAM_END) + inflateReset(strm); + } while (strm->avail_out); + return len - strm->avail_out; +} + +int gzclose OF((gzFile)); + +int gzclose(gz) + gzFile gz; +{ + z_stream *strm; + unsigned char out[BUFLEN]; + + if (gz == NULL) + return Z_STREAM_ERROR; + strm = &(gz->strm); + if (gz->write) { + strm->next_in = Z_NULL; + strm->avail_in = 0; + do { + strm->next_out = out; + strm->avail_out = BUFLEN; + (void)deflate(strm, Z_FINISH); + fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); + } while (strm->avail_out == 0); + deflateEnd(strm); + } + else + inflateEnd(strm); + fclose(gz->file); + free(gz); + return Z_OK; +} + +const char *gzerror OF((gzFile, int *)); + +const char *gzerror(gz, err) + gzFile gz; + int *err; +{ + *err = gz->err; + return gz->msg; +} + +#endif + +char *prog; + +void error OF((const char *msg)); +void gz_compress OF((FILE *in, gzFile out)); +#ifdef USE_MMAP +int gz_compress_mmap OF((FILE *in, gzFile out)); +#endif +void gz_uncompress OF((gzFile in, FILE *out)); +void file_compress OF((char *file, char *mode)); +void file_uncompress OF((char *file)); +int main OF((int argc, char *argv[])); + +/* =========================================================================== + * Display error message and exit + */ +void error(msg) + const char *msg; +{ + fprintf(stderr, "%s: %s\n", prog, msg); + exit(1); +} + +/* =========================================================================== + * Compress input to output then close both files. + */ + +void gz_compress(in, out) + FILE *in; + gzFile out; +{ + local char buf[BUFLEN]; + int len; + int err; + +#ifdef USE_MMAP + /* Try first compressing with mmap. If mmap fails (minigzip used in a + * pipe), use the normal fread loop. + */ + if (gz_compress_mmap(in, out) == Z_OK) return; +#endif + for (;;) { + len = (int)fread(buf, 1, sizeof(buf), in); + if (ferror(in)) { + perror("fread"); + exit(1); + } + if (len == 0) break; + + if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err)); + } + fclose(in); + if (gzclose(out) != Z_OK) error("failed gzclose"); +} + +#ifdef USE_MMAP /* MMAP version, Miguel Albrecht */ + +/* Try compressing the input file at once using mmap. Return Z_OK if + * if success, Z_ERRNO otherwise. + */ +int gz_compress_mmap(in, out) + FILE *in; + gzFile out; +{ + int len; + int err; + int ifd = fileno(in); + caddr_t buf; /* mmap'ed buffer for the entire input file */ + off_t buf_len; /* length of the input file */ + struct stat sb; + + /* Determine the size of the file, needed for mmap: */ + if (fstat(ifd, &sb) < 0) return Z_ERRNO; + buf_len = sb.st_size; + if (buf_len <= 0) return Z_ERRNO; + + /* Now do the actual mmap: */ + buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0); + if (buf == (caddr_t)(-1)) return Z_ERRNO; + + /* Compress the whole file at once: */ + len = gzwrite(out, (char *)buf, (unsigned)buf_len); + + if (len != (int)buf_len) error(gzerror(out, &err)); + + munmap(buf, buf_len); + fclose(in); + if (gzclose(out) != Z_OK) error("failed gzclose"); + return Z_OK; +} +#endif /* USE_MMAP */ + +/* =========================================================================== + * Uncompress input to output then close both files. + */ +void gz_uncompress(in, out) + gzFile in; + FILE *out; +{ + local char buf[BUFLEN]; + int len; + int err; + + for (;;) { + len = gzread(in, buf, sizeof(buf)); + if (len < 0) error (gzerror(in, &err)); + if (len == 0) break; + + if ((int)fwrite(buf, 1, (unsigned)len, out) != len) { + error("failed fwrite"); + } + } + if (fclose(out)) error("failed fclose"); + + if (gzclose(in) != Z_OK) error("failed gzclose"); +} + + +/* =========================================================================== + * Compress the given file: create a corresponding .gz file and remove the + * original. + */ +void file_compress(file, mode) + char *file; + char *mode; +{ + local char outfile[MAX_NAME_LEN]; + FILE *in; + gzFile out; + + if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) { + fprintf(stderr, "%s: filename too long\n", prog); + exit(1); + } + + strcpy(outfile, file); + strcat(outfile, GZ_SUFFIX); + + in = fopen(file, "rb"); + if (in == NULL) { + perror(file); + exit(1); + } + out = gzopen(outfile, mode); + if (out == NULL) { + fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile); + exit(1); + } + gz_compress(in, out); + + unlink(file); +} + + +/* =========================================================================== + * Uncompress the given file and remove the original. + */ +void file_uncompress(file) + char *file; +{ + local char buf[MAX_NAME_LEN]; + char *infile, *outfile; + FILE *out; + gzFile in; + size_t len = strlen(file); + + if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) { + fprintf(stderr, "%s: filename too long\n", prog); + exit(1); + } + + strcpy(buf, file); + + if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) { + infile = file; + outfile = buf; + outfile[len-3] = '\0'; + } else { + outfile = file; + infile = buf; + strcat(infile, GZ_SUFFIX); + } + in = gzopen(infile, "rb"); + if (in == NULL) { + fprintf(stderr, "%s: can't gzopen %s\n", prog, infile); + exit(1); + } + out = fopen(outfile, "wb"); + if (out == NULL) { + perror(file); + exit(1); + } + + gz_uncompress(in, out); + + unlink(infile); +} + + +/* =========================================================================== + * Usage: minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...] + * -c : write to standard output + * -d : decompress + * -f : compress with Z_FILTERED + * -h : compress with Z_HUFFMAN_ONLY + * -r : compress with Z_RLE + * -1 to -9 : compression level + */ + +int main(argc, argv) + int argc; + char *argv[]; +{ + int copyout = 0; + int uncompr = 0; + gzFile file; + char *bname, outmode[20]; + + strcpy(outmode, "wb6 "); + + prog = argv[0]; + bname = strrchr(argv[0], '/'); + if (bname) + bname++; + else + bname = argv[0]; + argc--, argv++; + + if (!strcmp(bname, "gunzip")) + uncompr = 1; + else if (!strcmp(bname, "zcat")) + copyout = uncompr = 1; + + while (argc > 0) { + if (strcmp(*argv, "-c") == 0) + copyout = 1; + else if (strcmp(*argv, "-d") == 0) + uncompr = 1; + else if (strcmp(*argv, "-f") == 0) + outmode[3] = 'f'; + else if (strcmp(*argv, "-h") == 0) + outmode[3] = 'h'; + else if (strcmp(*argv, "-r") == 0) + outmode[3] = 'R'; + else if ((*argv)[0] == '-' && (*argv)[1] >= '1' && (*argv)[1] <= '9' && + (*argv)[2] == 0) + outmode[2] = (*argv)[1]; + else + break; + argc--, argv++; + } + if (outmode[3] == ' ') + outmode[3] = 0; + if (argc == 0) { + SET_BINARY_MODE(stdin); + SET_BINARY_MODE(stdout); + if (uncompr) { + file = gzdopen(fileno(stdin), "rb"); + if (file == NULL) error("can't gzdopen stdin"); + gz_uncompress(file, stdout); + } else { + file = gzdopen(fileno(stdout), outmode); + if (file == NULL) error("can't gzdopen stdout"); + gz_compress(stdin, file); + } + } else { + if (copyout) { + SET_BINARY_MODE(stdout); + } + do { + if (uncompr) { + if (copyout) { + file = gzopen(*argv, "rb"); + if (file == NULL) + fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv); + else + gz_uncompress(file, stdout); + } else { + file_uncompress(*argv); + } + } else { + if (copyout) { + FILE * in = fopen(*argv, "rb"); + + if (in == NULL) { + perror(*argv); + } else { + file = gzdopen(fileno(stdout), outmode); + if (file == NULL) error("can't gzdopen stdout"); + + gz_compress(in, file); + } + + } else { + file_compress(*argv, outmode); + } + } + } while (argv++, --argc); + } + return 0; +} -- cgit v1.1