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
|
/*
vrfytool.c
23.09.99 tn
tool that does read a data-stream from stdin and does compare
it with a file on the harddrive.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <glib.h>
#include "xcdroast.h"
#define WAVHEADER 44
void usage() {
g_print("Usage: vrfytool [-d|-a] <file1> <file2> (Version: %s)\n", XCDROAST_VERSION);
g_print("\twhen file2 is a dash (-) then compare from stdin\n");
g_print("\t -d: compare data-files (blocksize: 2048)\n");
g_print("\t -a: compare audio-files (blocksize: 2352)\n");
}
gint main(gint argc, gchar **argv) {
gchar file1[MAXLINE];
gchar file2[MAXLINE];
guchar *buf1;
guchar *buf2;
struct stat buf;
gint size;
gint fd1, fd2;
gint nread1, nread2;
gint bytesread;
gint percent, oldpercent;
gint bs;
if (argc != 4) {
usage();
exit(1);
}
bs = 0;
if (strcmp(argv[1],"-a") == 0) {
bs = CDDAFRAME;
}
if (strcmp(argv[1],"-d") == 0) {
bs = DATASECTORSIZE;
}
if (bs == 0) {
usage();
exit(1);
}
strncpy(file1,argv[2],MAXLINE);
strncpy(file2,argv[3],MAXLINE);
/* get filesize */
if (stat(file1,&buf) != 0) {
g_print("Error stating %s: %s\n",file1,strerror(errno));
exit(1);
}
/* calculate how many bytes to handle */
size = buf.st_size;
buf1 = (guchar *)g_new(guchar, bs);
buf2 = (guchar *)g_new(guchar, bs);
/* open first file */
fd1 = open(file1, O_RDONLY, 0);
if (fd1 < 0) {
g_print("Error opening %s: %s\n",file1,strerror(errno));
exit(1);
}
/* open second file..or do read from stdin */
if (strcmp(file2, "-") == 0) {
fd2 = STDIN_FILENO;
} else {
fd2 = open(file2, O_RDONLY, 0);
if (fd2 < 0) {
g_print("Error opening %s: %s\n",file2,strerror(errno));
exit(1);
}
}
bytesread = 0;
oldpercent = 0;
g_print("Verifying %s (%d bytes)\n",file1,size);
fflush(stdout);
/* start comparing */
while (1) {
/* first sector for audio-files is only the wavheader */
/* so read first 44 bytes and then always 2352 bytes */
if (bs == WAVHEADER) {
bs = CDDAFRAME;
}
if (bs == CDDAFRAME && bytesread == 0) {
bs = WAVHEADER;
}
nread1 = read(fd1, buf1, bs);
if (nread1 < 0) {
g_print("Error reading %s: %s\n",file1,strerror(errno));
exit(1);
}
/* EOF */
if (nread1 == 0)
break;
/* read exactly as many bytes from stdin as from file */
nread2 = read(fd2, buf2, nread1);
if (nread2 < 0) {
g_print("Error reading %s: %s\n",file2,strerror(errno));
exit(1);
}
if (nread1 != nread2 || nread1 < bs || nread2 < bs) {
g_print("Warning: Short read on position %d\n", bytesread);
exit(1);
}
if (memcmp(buf1,buf2,bs) != 0) {
g_print("Warning: Files differ on position %d\n", bytesread);
exit(1);
}
bytesread+=nread1;
/* output percent meter */
percent = ((bytesread/1024) * 100) / (size/1024);
if (percent != oldpercent) {
g_print(" %d%%\n", percent);
fflush(stdout);
oldpercent = percent;
}
}
if (bytesread != size) {
g_print("Warning: different file sizes.\n");
exit(1);
}
/* continue comparing the rest of stdin with optional padding zeros */
while (1) {
nread2 = read(fd2, buf2, bs);
if (nread2 < 0) {
g_print("Error reading %s: %s\n",file2,strerror(errno));
exit(1);
}
/* EOF */
if (nread2 == 0)
break;
if (nread2 < bs) {
g_print("Warning: Short read on position %d\n", bytesread);
exit(1);
}
memset (buf1, 0, bs);
if (memcmp(buf1,buf2,bs) != 0) {
g_print("Warning: Files differ on position %d\n", bytesread);
exit(1);
}
}
g_free(buf1);
g_free(buf2);
close(fd1);
close(fd2);
/* padding is usually 15 sectors by cdrecord */
if (bytesread < size || bytesread > size+15*bs) {
g_print("Warning: different file sizes.\n");
exit(1);
}
/* all ok - compare perfect */
g_print("Compare of %s successful.\n",file1);
fflush(stdout);
return 0;
}
|
