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path: root/src/lib/libcrypto/comp/c_zlib.c
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Diffstat (limited to 'src/lib/libcrypto/comp/c_zlib.c')
-rw-r--r--src/lib/libcrypto/comp/c_zlib.c133
1 files changed, 0 insertions, 133 deletions
diff --git a/src/lib/libcrypto/comp/c_zlib.c b/src/lib/libcrypto/comp/c_zlib.c
deleted file mode 100644
index 6684ab4841..0000000000
--- a/src/lib/libcrypto/comp/c_zlib.c
+++ /dev/null
@@ -1,133 +0,0 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <openssl/objects.h>
5#include <openssl/comp.h>
6
7COMP_METHOD *COMP_zlib(void );
8
9#ifndef ZLIB
10
11static COMP_METHOD zlib_method={
12 NID_undef,
13 "(null)",
14 NULL,
15 NULL,
16 NULL,
17 NULL,
18 NULL,
19 };
20
21#else
22
23#include <zlib.h>
24
25static int zlib_compress_block(COMP_CTX *ctx, unsigned char *out,
26 unsigned int olen, unsigned char *in, unsigned int ilen);
27static int zlib_expand_block(COMP_CTX *ctx, unsigned char *out,
28 unsigned int olen, unsigned char *in, unsigned int ilen);
29
30static int zz_uncompress(Bytef *dest, uLongf *destLen, const Bytef *source,
31 uLong sourceLen);
32
33static COMP_METHOD zlib_method={
34 NID_zlib_compression,
35 LN_zlib_compression,
36 NULL,
37 NULL,
38 zlib_compress_block,
39 zlib_expand_block,
40 NULL,
41 };
42
43static int zlib_compress_block(COMP_CTX *ctx, unsigned char *out,
44 unsigned int olen, unsigned char *in, unsigned int ilen)
45 {
46 unsigned long l;
47 int i;
48 int clear=1;
49
50 if (ilen > 128)
51 {
52 out[0]=1;
53 l=olen-1;
54 i=compress(&(out[1]),&l,in,(unsigned long)ilen);
55 if (i != Z_OK)
56 return(-1);
57 if (ilen > l)
58 {
59 clear=0;
60 l++;
61 }
62 }
63 if (clear)
64 {
65 out[0]=0;
66 memcpy(&(out[1]),in,ilen);
67 l=ilen+1;
68 }
69fprintf(stderr,"compress(%4d)->%4d %s\n",ilen,(int)l,(clear)?"clear":"zlib");
70 return((int)l);
71 }
72
73static int zlib_expand_block(COMP_CTX *ctx, unsigned char *out,
74 unsigned int olen, unsigned char *in, unsigned int ilen)
75 {
76 unsigned long l;
77 int i;
78
79 if (in[0])
80 {
81 l=olen;
82 i=zz_uncompress(out,&l,&(in[1]),(unsigned long)ilen-1);
83 if (i != Z_OK)
84 return(-1);
85 }
86 else
87 {
88 memcpy(out,&(in[1]),ilen-1);
89 l=ilen-1;
90 }
91 fprintf(stderr,"expand (%4d)->%4d %s\n",ilen,(int)l,in[0]?"zlib":"clear");
92 return((int)l);
93 }
94
95static int zz_uncompress (Bytef *dest, uLongf *destLen, const Bytef *source,
96 uLong sourceLen)
97{
98 z_stream stream;
99 int err;
100
101 stream.next_in = (Bytef*)source;
102 stream.avail_in = (uInt)sourceLen;
103 /* Check for source > 64K on 16-bit machine: */
104 if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
105
106 stream.next_out = dest;
107 stream.avail_out = (uInt)*destLen;
108 if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
109
110 stream.zalloc = (alloc_func)0;
111 stream.zfree = (free_func)0;
112
113 err = inflateInit(&stream);
114 if (err != Z_OK) return err;
115
116 err = inflate(&stream, Z_FINISH);
117 if (err != Z_STREAM_END) {
118 inflateEnd(&stream);
119 return err;
120 }
121 *destLen = stream.total_out;
122
123 err = inflateEnd(&stream);
124 return err;
125}
126
127#endif
128
129COMP_METHOD *COMP_zlib(void)
130 {
131 return(&zlib_method);
132 }
133