+++ /dev/null
-(* example.c -- usage example of the zlib compression library
- * Copyright (C) 1995-2003 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- *
- * Pascal translation
- * Copyright (C) 1998 by Jacques Nomssi Nzali.
- * For conditions of distribution and use, see copyright notice in readme.txt
- *
- * Adaptation to the zlibpas interface
- * Copyright (C) 2003 by Cosmin Truta.
- * For conditions of distribution and use, see copyright notice in readme.txt
- *)
-
-program example;
-
-{$DEFINE TEST_COMPRESS}
-{DO NOT $DEFINE TEST_GZIO}
-{$DEFINE TEST_DEFLATE}
-{$DEFINE TEST_INFLATE}
-{$DEFINE TEST_FLUSH}
-{$DEFINE TEST_SYNC}
-{$DEFINE TEST_DICT}
-
-uses SysUtils, zlibpas;
-
-const TESTFILE = 'foo.gz';
-
-(* "hello world" would be more standard, but the repeated "hello"
- * stresses the compression code better, sorry...
- *)
-const hello: PChar = 'hello, hello!';
-
-const dictionary: PChar = 'hello';
-
-var dictId: LongInt; (* Adler32 value of the dictionary *)
-
-procedure CHECK_ERR(err: Integer; msg: String);
-begin
- if err <> Z_OK then
- begin
- WriteLn(msg, ' error: ', err);
- Halt(1);
- end;
-end;
-
-procedure EXIT_ERR(const msg: String);
-begin
- WriteLn('Error: ', msg);
- Halt(1);
-end;
-
-(* ===========================================================================
- * Test compress and uncompress
- *)
-{$IFDEF TEST_COMPRESS}
-procedure test_compress(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen: LongInt);
-var err: Integer;
- len: LongInt;
-begin
- len := StrLen(hello)+1;
-
- err := compress(compr, comprLen, hello, len);
- CHECK_ERR(err, 'compress');
-
- StrCopy(PChar(uncompr), 'garbage');
-
- err := uncompress(uncompr, uncomprLen, compr, comprLen);
- CHECK_ERR(err, 'uncompress');
-
- if StrComp(PChar(uncompr), hello) <> 0 then
- EXIT_ERR('bad uncompress')
- else
- WriteLn('uncompress(): ', PChar(uncompr));
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test read/write of .gz files
- *)
-{$IFDEF TEST_GZIO}
-procedure test_gzio(const fname: PChar; (* compressed file name *)
- uncompr: Pointer;
- uncomprLen: LongInt);
-var err: Integer;
- len: Integer;
- zfile: gzFile;
- pos: LongInt;
-begin
- len := StrLen(hello)+1;
-
- zfile := gzopen(fname, 'wb');
- if zfile = NIL then
- begin
- WriteLn('gzopen error');
- Halt(1);
- end;
- gzputc(zfile, 'h');
- if gzputs(zfile, 'ello') <> 4 then
- begin
- WriteLn('gzputs err: ', gzerror(zfile, err));
- Halt(1);
- end;
- {$IFDEF GZ_FORMAT_STRING}
- if gzprintf(zfile, ', %s!', 'hello') <> 8 then
- begin
- WriteLn('gzprintf err: ', gzerror(zfile, err));
- Halt(1);
- end;
- {$ELSE}
- if gzputs(zfile, ', hello!') <> 8 then
- begin
- WriteLn('gzputs err: ', gzerror(zfile, err));
- Halt(1);
- end;
- {$ENDIF}
- gzseek(zfile, 1, SEEK_CUR); (* add one zero byte *)
- gzclose(zfile);
-
- zfile := gzopen(fname, 'rb');
- if zfile = NIL then
- begin
- WriteLn('gzopen error');
- Halt(1);
- end;
-
- StrCopy(PChar(uncompr), 'garbage');
-
- if gzread(zfile, uncompr, uncomprLen) <> len then
- begin
- WriteLn('gzread err: ', gzerror(zfile, err));
- Halt(1);
- end;
- if StrComp(PChar(uncompr), hello) <> 0 then
- begin
- WriteLn('bad gzread: ', PChar(uncompr));
- Halt(1);
- end
- else
- WriteLn('gzread(): ', PChar(uncompr));
-
- pos := gzseek(zfile, -8, SEEK_CUR);
- if (pos <> 6) or (gztell(zfile) <> pos) then
- begin
- WriteLn('gzseek error, pos=', pos, ', gztell=', gztell(zfile));
- Halt(1);
- end;
-
- if gzgetc(zfile) <> ' ' then
- begin
- WriteLn('gzgetc error');
- Halt(1);
- end;
-
- if gzungetc(' ', zfile) <> ' ' then
- begin
- WriteLn('gzungetc error');
- Halt(1);
- end;
-
- gzgets(zfile, PChar(uncompr), uncomprLen);
- uncomprLen := StrLen(PChar(uncompr));
- if uncomprLen <> 7 then (* " hello!" *)
- begin
- WriteLn('gzgets err after gzseek: ', gzerror(zfile, err));
- Halt(1);
- end;
- if StrComp(PChar(uncompr), hello + 6) <> 0 then
- begin
- WriteLn('bad gzgets after gzseek');
- Halt(1);
- end
- else
- WriteLn('gzgets() after gzseek: ', PChar(uncompr));
-
- gzclose(zfile);
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test deflate with small buffers
- *)
-{$IFDEF TEST_DEFLATE}
-procedure test_deflate(compr: Pointer; comprLen: LongInt);
-var c_stream: z_stream; (* compression stream *)
- err: Integer;
- len: LongInt;
-begin
- len := StrLen(hello)+1;
-
- c_stream.zalloc := NIL;
- c_stream.zfree := NIL;
- c_stream.opaque := NIL;
-
- err := deflateInit(c_stream, Z_DEFAULT_COMPRESSION);
- CHECK_ERR(err, 'deflateInit');
-
- c_stream.next_in := hello;
- c_stream.next_out := compr;
-
- while (c_stream.total_in <> len) and
- (c_stream.total_out < comprLen) do
- begin
- c_stream.avail_out := 1; { force small buffers }
- c_stream.avail_in := 1;
- err := deflate(c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'deflate');
- end;
-
- (* Finish the stream, still forcing small buffers: *)
- while TRUE do
- begin
- c_stream.avail_out := 1;
- err := deflate(c_stream, Z_FINISH);
- if err = Z_STREAM_END then
- break;
- CHECK_ERR(err, 'deflate');
- end;
-
- err := deflateEnd(c_stream);
- CHECK_ERR(err, 'deflateEnd');
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test inflate with small buffers
- *)
-{$IFDEF TEST_INFLATE}
-procedure test_inflate(compr: Pointer; comprLen : LongInt;
- uncompr: Pointer; uncomprLen : LongInt);
-var err: Integer;
- d_stream: z_stream; (* decompression stream *)
-begin
- StrCopy(PChar(uncompr), 'garbage');
-
- d_stream.zalloc := NIL;
- d_stream.zfree := NIL;
- d_stream.opaque := NIL;
-
- 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) and
- (d_stream.total_in < comprLen) do
- begin
- d_stream.avail_out := 1; (* force small buffers *)
- d_stream.avail_in := 1;
- err := inflate(d_stream, Z_NO_FLUSH);
- if err = Z_STREAM_END then
- break;
- CHECK_ERR(err, 'inflate');
- end;
-
- err := inflateEnd(d_stream);
- CHECK_ERR(err, 'inflateEnd');
-
- if StrComp(PChar(uncompr), hello) <> 0 then
- EXIT_ERR('bad inflate')
- else
- WriteLn('inflate(): ', PChar(uncompr));
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test deflate with large buffers and dynamic change of compression level
- *)
-{$IFDEF TEST_DEFLATE}
-procedure test_large_deflate(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen: LongInt);
-var c_stream: z_stream; (* compression stream *)
- err: Integer;
-begin
- c_stream.zalloc := NIL;
- c_stream.zfree := NIL;
- c_stream.opaque := NIL;
-
- err := deflateInit(c_stream, Z_BEST_SPEED);
- CHECK_ERR(err, 'deflateInit');
-
- c_stream.next_out := compr;
- c_stream.avail_out := Integer(comprLen);
-
- (* At this point, uncompr is still mostly zeroes, so it should compress
- * very well:
- *)
- c_stream.next_in := uncompr;
- c_stream.avail_in := Integer(uncomprLen);
- err := deflate(c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'deflate');
- if c_stream.avail_in <> 0 then
- EXIT_ERR('deflate not greedy');
-
- (* 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 := Integer(comprLen div 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 := Integer(uncomprLen);
- err := deflate(c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'deflate');
-
- err := deflate(c_stream, Z_FINISH);
- if err <> Z_STREAM_END then
- EXIT_ERR('deflate should report Z_STREAM_END');
-
- err := deflateEnd(c_stream);
- CHECK_ERR(err, 'deflateEnd');
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test inflate with large buffers
- *)
-{$IFDEF TEST_INFLATE}
-procedure test_large_inflate(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen: LongInt);
-var err: Integer;
- d_stream: z_stream; (* decompression stream *)
-begin
- StrCopy(PChar(uncompr), 'garbage');
-
- d_stream.zalloc := NIL;
- d_stream.zfree := NIL;
- d_stream.opaque := NIL;
-
- d_stream.next_in := compr;
- d_stream.avail_in := Integer(comprLen);
-
- err := inflateInit(d_stream);
- CHECK_ERR(err, 'inflateInit');
-
- while TRUE do
- begin
- d_stream.next_out := uncompr; (* discard the output *)
- d_stream.avail_out := Integer(uncomprLen);
- err := inflate(d_stream, Z_NO_FLUSH);
- if err = Z_STREAM_END then
- break;
- CHECK_ERR(err, 'large inflate');
- end;
-
- err := inflateEnd(d_stream);
- CHECK_ERR(err, 'inflateEnd');
-
- if d_stream.total_out <> 2 * uncomprLen + comprLen div 2 then
- begin
- WriteLn('bad large inflate: ', d_stream.total_out);
- Halt(1);
- end
- else
- WriteLn('large_inflate(): OK');
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test deflate with full flush
- *)
-{$IFDEF TEST_FLUSH}
-procedure test_flush(compr: Pointer; var comprLen : LongInt);
-var c_stream: z_stream; (* compression stream *)
- err: Integer;
- len: Integer;
-begin
- len := StrLen(hello)+1;
-
- c_stream.zalloc := NIL;
- c_stream.zfree := NIL;
- c_stream.opaque := NIL;
-
- err := deflateInit(c_stream, Z_DEFAULT_COMPRESSION);
- CHECK_ERR(err, 'deflateInit');
-
- c_stream.next_in := hello;
- c_stream.next_out := compr;
- c_stream.avail_in := 3;
- c_stream.avail_out := Integer(comprLen);
- err := deflate(c_stream, Z_FULL_FLUSH);
- CHECK_ERR(err, 'deflate');
-
- Inc(PByteArray(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 then
- CHECK_ERR(err, 'deflate');
-
- err := deflateEnd(c_stream);
- CHECK_ERR(err, 'deflateEnd');
-
- comprLen := c_stream.total_out;
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test inflateSync()
- *)
-{$IFDEF TEST_SYNC}
-procedure test_sync(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen : LongInt);
-var err: Integer;
- d_stream: z_stream; (* decompression stream *)
-begin
- StrCopy(PChar(uncompr), 'garbage');
-
- d_stream.zalloc := NIL;
- d_stream.zfree := NIL;
- d_stream.opaque := NIL;
-
- 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 := Integer(uncomprLen);
-
- inflate(d_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'inflate');
-
- d_stream.avail_in := Integer(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 then
- EXIT_ERR('inflate should report DATA_ERROR');
- (* Because of incorrect adler32 *)
-
- err := inflateEnd(d_stream);
- CHECK_ERR(err, 'inflateEnd');
-
- WriteLn('after inflateSync(): hel', PChar(uncompr));
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test deflate with preset dictionary
- *)
-{$IFDEF TEST_DICT}
-procedure test_dict_deflate(compr: Pointer; comprLen: LongInt);
-var c_stream: z_stream; (* compression stream *)
- err: Integer;
-begin
- c_stream.zalloc := NIL;
- c_stream.zfree := NIL;
- c_stream.opaque := NIL;
-
- err := deflateInit(c_stream, Z_BEST_COMPRESSION);
- CHECK_ERR(err, 'deflateInit');
-
- err := deflateSetDictionary(c_stream, dictionary, StrLen(dictionary));
- CHECK_ERR(err, 'deflateSetDictionary');
-
- dictId := c_stream.adler;
- c_stream.next_out := compr;
- c_stream.avail_out := Integer(comprLen);
-
- c_stream.next_in := hello;
- c_stream.avail_in := StrLen(hello)+1;
-
- err := deflate(c_stream, Z_FINISH);
- if err <> Z_STREAM_END then
- EXIT_ERR('deflate should report Z_STREAM_END');
-
- err := deflateEnd(c_stream);
- CHECK_ERR(err, 'deflateEnd');
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test inflate with a preset dictionary
- *)
-{$IFDEF TEST_DICT}
-procedure test_dict_inflate(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen: LongInt);
-var err: Integer;
- d_stream: z_stream; (* decompression stream *)
-begin
- StrCopy(PChar(uncompr), 'garbage');
-
- d_stream.zalloc := NIL;
- d_stream.zfree := NIL;
- d_stream.opaque := NIL;
-
- d_stream.next_in := compr;
- d_stream.avail_in := Integer(comprLen);
-
- err := inflateInit(d_stream);
- CHECK_ERR(err, 'inflateInit');
-
- d_stream.next_out := uncompr;
- d_stream.avail_out := Integer(uncomprLen);
-
- while TRUE do
- begin
- err := inflate(d_stream, Z_NO_FLUSH);
- if err = Z_STREAM_END then
- break;
- if err = Z_NEED_DICT then
- begin
- if d_stream.adler <> dictId then
- EXIT_ERR('unexpected dictionary');
- err := inflateSetDictionary(d_stream, dictionary, StrLen(dictionary));
- end;
- CHECK_ERR(err, 'inflate with dict');
- end;
-
- err := inflateEnd(d_stream);
- CHECK_ERR(err, 'inflateEnd');
-
- if StrComp(PChar(uncompr), hello) <> 0 then
- EXIT_ERR('bad inflate with dict')
- else
- WriteLn('inflate with dictionary: ', PChar(uncompr));
-end;
-{$ENDIF}
-
-var compr, uncompr: Pointer;
- comprLen, uncomprLen: LongInt;
-
-begin
- if zlibVersion^ <> ZLIB_VERSION[1] then
- EXIT_ERR('Incompatible zlib version');
-
- WriteLn('zlib version: ', zlibVersion);
- WriteLn('zlib compile flags: ', Format('0x%x', [zlibCompileFlags]));
-
- comprLen := 10000 * SizeOf(Integer); (* don't overflow on MSDOS *)
- uncomprLen := comprLen;
- GetMem(compr, comprLen);
- GetMem(uncompr, uncomprLen);
- if (compr = NIL) or (uncompr = NIL) then
- EXIT_ERR('Out of memory');
- (* compr and uncompr are cleared to avoid reading uninitialized
- * data and to ensure that uncompr compresses well.
- *)
- FillChar(compr^, comprLen, 0);
- FillChar(uncompr^, uncomprLen, 0);
-
- {$IFDEF TEST_COMPRESS}
- WriteLn('** Testing compress');
- test_compress(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
-
- {$IFDEF TEST_GZIO}
- WriteLn('** Testing gzio');
- if ParamCount >= 1 then
- test_gzio(ParamStr(1), uncompr, uncomprLen)
- else
- test_gzio(TESTFILE, uncompr, uncomprLen);
- {$ENDIF}
-
- {$IFDEF TEST_DEFLATE}
- WriteLn('** Testing deflate with small buffers');
- test_deflate(compr, comprLen);
- {$ENDIF}
- {$IFDEF TEST_INFLATE}
- WriteLn('** Testing inflate with small buffers');
- test_inflate(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
-
- {$IFDEF TEST_DEFLATE}
- WriteLn('** Testing deflate with large buffers');
- test_large_deflate(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
- {$IFDEF TEST_INFLATE}
- WriteLn('** Testing inflate with large buffers');
- test_large_inflate(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
-
- {$IFDEF TEST_FLUSH}
- WriteLn('** Testing deflate with full flush');
- test_flush(compr, comprLen);
- {$ENDIF}
- {$IFDEF TEST_SYNC}
- WriteLn('** Testing inflateSync');
- test_sync(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
- comprLen := uncomprLen;
-
- {$IFDEF TEST_DICT}
- WriteLn('** Testing deflate and inflate with preset dictionary');
- test_dict_deflate(compr, comprLen);
- test_dict_inflate(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
-
- FreeMem(compr, comprLen);
- FreeMem(uncompr, uncomprLen);
-end.
projects / ossec-hids.git / blobdiff