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
|
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: copy.cc,v 1.3 1998/10/26 07:11:52 jgg Exp $
/* ######################################################################
Copy URI - This method takes a uri like a file: uri and copies it
to the destination file.
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <apt-pkg/fileutl.h>
#include <strutl.h>
#include <apt-pkg/error.h>
#include <sys/stat.h>
#include <utime.h>
#include <unistd.h>
#include <stdio.h>
/*}}}*/
// Fail - Generate a failure message /*{{{*/
// ---------------------------------------------------------------------
/* */
void Fail(string URI)
{
string Err = "Undetermined Error";
if (_error->empty() == false)
_error->PopMessage(Err);
printf("400 URI Failure\n"
"URI: %s\n"
"Message: %s\n\n",URI.c_str(),Err.c_str());
_error->Discard();
}
/*}}}*/
int main()
{
setlinebuf(stdout);
SetNonBlock(STDIN_FILENO,true);
printf("100 Capabilities\n"
"Version: 1.0\n"
"Pipeline: true\n\n");
vector<string> Messages;
while (1)
{
if (WaitFd(STDIN_FILENO) == false ||
ReadMessages(STDIN_FILENO,Messages) == false)
return 0;
while (Messages.empty() == false)
{
string Message = Messages.front();
Messages.erase(Messages.begin());
// Fetch the message number
char *End;
int Number = strtol(Message.c_str(),&End,10);
if (End == Message.c_str())
{
cerr << "Malformed message!" << endl;
return 100;
}
// We only understand 600 URI Fetch messages
if (Number != 600)
continue;
// Grab the URI bit
string URI = LookupTag(Message,"URI");
string Target = LookupTag(Message,"Filename");
// Grab the filename
string::size_type Pos = URI.find(':');
if (Pos == string::npos)
{
_error->Error("Invalid message");
Fail(URI);
continue;
}
string File = string(URI,Pos+1);
// Start the reply message
string Result = "201 URI Done";
Result += "\nURI: " + URI;
Result += "\nFileName: " + Target;
// See if the file exists
FileFd From(File,FileFd::ReadOnly);
FileFd To(Target,FileFd::WriteEmpty);
To.EraseOnFailure();
if (_error->PendingError() == true)
{
Fail(URI);
continue;
}
// Copy the file
if (CopyFile(From,To) == false)
{
Fail(URI);
continue;
}
From.Close();
To.Close();
// Transfer the modification times
struct stat Buf;
if (stat(File.c_str(),&Buf) != 0)
{
_error->Errno("stat","Failed to stat");
Fail(URI);
continue;
}
struct utimbuf TimeBuf;
TimeBuf.actime = Buf.st_atime;
TimeBuf.modtime = Buf.st_mtime;
if (utime(Target.c_str(),&TimeBuf) != 0)
{
To.OpFail();
_error->Errno("utime","Failed to set modification time");
Fail(URI);
continue;
}
// Send the message
Result += "\n\n";
if (write(STDOUT_FILENO,Result.begin(),Result.length()) !=
(signed)Result.length())
return 100;
}
}
return 0;
}
|
