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
|
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: cdrom.cc,v 1.6 1998/12/22 07:52:05 jgg Exp $
/* ######################################################################
CDROM URI method for APT
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <apt-pkg/acquire-method.h>
#include <apt-pkg/cdromutl.h>
#include <apt-pkg/error.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/fileutl.h>
#include <sys/stat.h>
#include <unistd.h>
/*}}}*/
class CDROMMethod : public pkgAcqMethod
{
Configuration Database;
bool DatabaseLoaded;
string CurrentID;
virtual bool Fetch(FetchItem *Itm);
string GetID(string Name);
public:
CDROMMethod();
};
// CDROMMethod::CDROMethod - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
CDROMMethod::CDROMMethod() : pkgAcqMethod("1.0",SingleInstance | LocalOnly |
SendConfig), DatabaseLoaded(false)
{
};
/*}}}*/
// CDROMMethod::GetID - Get the ID hash for /*{{{*/
// ---------------------------------------------------------------------
/* We search the configuration space for the name and then return the ID
tag associated with it. */
string CDROMMethod::GetID(string Name)
{
if (DatabaseLoaded == false)
{
// Read the database
string DFile = _config->FindFile("Dir::State::cdroms");
if (FileExists(DFile) == true)
{
if (ReadConfigFile(Database,DFile) == false)
{
_error->Error("Unable to read the cdrom database %s",
DFile.c_str());
return string();
}
}
DatabaseLoaded = true;
}
const Configuration::Item *Top = Database.Tree("CD");
for (; Top != 0;)
{
if (Top->Value == Name)
return Top->Tag;
Top = Top->Next;
}
return string();
}
/*}}}*/
// CDROMMethod::Fetch - Fetch a file /*{{{*/
// ---------------------------------------------------------------------
/* */
bool CDROMMethod::Fetch(FetchItem *Itm)
{
URI Get = Itm->Uri;
string File = Get.Path;
FetchResult Res;
/* All IMS queries are returned as a hit, CDROMs are readonly so
time stamps never change */
if (Itm->LastModified != 0)
{
Res.LastModified = Itm->LastModified;
Res.IMSHit = true;
URIDone(Res);
return true;
}
string ID = GetID(Get.Host);
if (_error->PendingError() == true)
return false;
// All non IMS queries for package files fail.
if (Itm->IndexFile == true || ID.empty() == true)
{
Fail("Please use apt-cdrom to make this CD recognized by APT."
" apt-get update cannot be used to add new CDs");
return true;
}
// We already have a CD inserted, but it is the wrong one
if (CurrentID.empty() == false && ID != CurrentID)
{
Fail("Wrong CD",true);
return true;
}
string CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/");
if (CDROM[0] == '.')
CDROM= SafeGetCWD() + '/' + CDROM;
string NewID;
while (1)
{
if (IdentCdrom(CDROM,NewID) == false)
return false;
// A hit
if (NewID == ID)
break;
UnmountCdrom(CDROM);
if (MediaFail(Get.Host,CDROM) == false)
{
CurrentID = "FAIL";
Fail("Wrong CD",true);
return true;
}
MountCdrom(CDROM);
}
// ID matches
if (NewID == ID)
{
Res.Filename = CDROM + File;
if (FileExists(Res.Filename) == false)
return _error->Error("File not found");
CurrentID = ID;
Res.LastModified = Itm->LastModified;
Res.IMSHit = true;
URIDone(Res);
return true;
}
return _error->Error("CDROM not found");
}
/*}}}*/
int main()
{
CDROMMethod Mth;
return Mth.Run();
}
|
