1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
#include <config.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#ifdef USE_ZLIB
#include <zlib.h>
#endif
#ifdef USE_BZ2LIB
#include <bzlib.h>
#endif
#include <dpkg.h>
#include "dpkg.h"
#include "dpkg-db.h"
void decompress_cat(enum compression_type type, int fd_in, int fd_out, char *desc, ...) {
va_list al;
struct varbuf v;
varbufinit(&v);
va_start(al,desc);
varbufvprintf(&v, desc, al);
va_end(al);
switch(type) {
case GZ:
#ifdef USE_ZLIB
{
char buffer[4096];
int actualread;
gzFile gzfile = gzdopen(fd_in, "r");
while ((actualread= gzread(gzfile,buffer,sizeof(buffer))) > 0) {
if (actualread < 0 ) {
int err = 0;
const char *errmsg = gzerror(gzfile, &err);
if (err == Z_ERRNO) {
if (errno == EINTR) continue;
errmsg= strerror(errno);
}
ohshite(_("%s: internal gzip error: `%s'"), v.buf, errmsg);
}
write(fd_out,buffer,actualread);
}
}
exit(0);
#else
if (fd_in != 0) {
m_dup2(fd_in, 0);
close(fd_in);
}
if (fd_out != 1) {
m_dup2(fd_out, 1);
close(fd_out);
}
execlp(GZIP,"gzip","-dc",(char*)0); ohshite(_("%s: failed to exec gzip -dc"), v.buf);
#endif
case BZ2:
#ifdef USE_BZ2LIB
{
char buffer[4096];
int actualread;
BZFILE *bzfile = BZ2_bzdopen(fd_in, "r");
while ((actualread= BZ2_bzread(bzfile,buffer,sizeof(buffer))) > 0) {
if (actualread < 0 ) {
int err = 0;
const char *errmsg = BZ2_bzerror(bzfile, &err);
if (err == Z_ERRNO) {
if (errno == EINTR) continue;
errmsg= strerror(errno);
}
ohshite(_("%s: internal bzip2 error: `%s'"), v.buf, errmsg);
}
write(fd_out,buffer,actualread);
}
}
exit(0);
#else
if (fd_in != 0) {
m_dup2(fd_in, 0);
close(fd_in);
}
if (fd_out != 1) {
m_dup2(fd_out, 1);
close(fd_out);
}
execlp(BZIP2,"bzip2","-dc",(char*)0); ohshite(_("%s: failed to exec bzip2 -dc"), v.buf);
#endif
case CAT:
fd_fd_copy(fd_in, fd_out, -1, _("%s: decompression"), v.buf);
exit(0);
default:
exit(1);
}
}
void compress_cat(enum compression_type type, int fd_in, int fd_out, const char *compression, char *desc, ...) {
va_list al;
struct varbuf v;
char combuf[6];
varbufinit(&v);
va_start(al,desc);
varbufvprintf(&v, desc, al);
va_end(al);
if(compression == NULL) compression= "9";
else if(*compression == '0') type = CAT;
switch(type) {
case GZ:
#ifdef USE_ZLIB
{
int actualread, actualwrite;
char buffer[4096];
gzFile gzfile;
strncpy(combuf, "w9", sizeof(combuf));
combuf[1]= *compression;
gzfile = gzdopen(1, combuf);
while((actualread = read(0,buffer,sizeof(buffer))) > 0) {
if (actualread < 0 ) {
if (errno == EINTR) continue;
ohshite(_("%s: internal gzip error: read: `%s'"), v.buf, strerror(errno));
}
actualwrite= gzwrite(gzfile,buffer,actualread);
if (actualwrite < 0 ) {
int err = 0;
const char *errmsg = gzerror(gzfile, &err);
if (err == Z_ERRNO) {
if (errno == EINTR) continue;
errmsg= strerror(errno);
}
ohshite(_("%s: internal gzip error: write: `%s'"), v.buf, errmsg);
}
if (actualwrite != actualread)
ohshite(_("%s: internal gzip error: read(%i) != write(%i)"), v.buf, actualread, actualwrite);
}
gzclose(gzfile);
exit(0);
}
#else
if (fd_in != 0) {
m_dup2(fd_in, 0);
close(fd_in);
}
if (fd_out != 1) {
m_dup2(fd_out, 1);
close(fd_out);
}
strncpy(combuf, "-9c", sizeof(combuf));
combuf[1]= *compression;
execlp(GZIP,"gzip",combuf,(char*)0); ohshit(_("%s: failed to exec gzip %s"), v.buf, combuf);
#endif
case BZ2:
#ifdef USE_BZ2LIB
{
int actualread, actualwrite;
char buffer[4096];
BZFILE *bzfile;
strncpy(combuf, "w9", sizeof(combuf));
combuf[1]= *compression;
bzfile = BZ2_bzdopen(1, combuf);
while((actualread = read(0,buffer,sizeof(buffer))) > 0) {
if (actualread < 0 ) {
if (errno == EINTR) continue;
ohshite(_("%s: internal bzip2 error: read: `%s'"), v.buf, strerror(errno));
}
actualwrite= BZ2_bzwrite(bzfile,buffer,actualread);
if (actualwrite < 0 ) {
int err = 0;
const char *errmsg = BZ2_bzerror(bzfile, &err);
if (err == BZ_IO_ERROR) {
if (errno == EINTR) continue;
errmsg= strerror(errno);
}
ohshite(_("%s: internal bzip2 error: write: `%s'"), v.buf, errmsg);
}
if (actualwrite != actualread)
ohshite(_("%s: internal bzip2 error: read(%i) != write(%i)"), v.buf, actualread, actualwrite);
}
BZ2_bzclose(bzfile);
exit(0);
}
#else
if (fd_in != 0) {
m_dup2(fd_in, 0);
close(fd_in);
}
if (fd_out != 1) {
m_dup2(fd_out, 1);
close(fd_out);
}
strncpy(combuf, "-9c", sizeof(combuf));
combuf[1]= *compression;
execlp(BZIP2,"bzip2",combuf,(char*)0); ohshit(_("%s: failed to exec bzip2 %s"), v.buf, combuf);
#endif
case CAT:
fd_fd_copy(fd_in, fd_out, -1, _("%s: compression"), v.buf);
exit(0);
default:
exit(1);
}
}
|
