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1 // -*- mode: cpp; mode: fold -*-
2 // Description /*{{{*/
3 // $Id: file.cc,v 1.9.2.1 2004/01/16 18:58:50 mdz Exp $
4 /* ######################################################################
5
6 File URI method for APT
7
8 This simply checks that the file specified exists, if so the relevent
9 information is returned. If a .gz filename is specified then the file
10 name with .gz removed will also be checked and information about it
11 will be returned in Alt-*
12
13 ##################################################################### */
14 /*}}}*/
15 // Include Files /*{{{*/
16 #include <apt-pkg/acquire-method.h>
17 #include <apt-pkg/error.h>
18 #include <apt-pkg/hashes.h>
19 #include <apt-pkg/fileutl.h>
20
21 #include <sys/stat.h>
22 #include <unistd.h>
23 #include <apti18n.h>
24 /*}}}*/
25
26 class FileMethod : public pkgAcqMethod
27 {
28 virtual bool Fetch(FetchItem *Itm);
29
30 public:
31
32 FileMethod() : pkgAcqMethod("1.0",SingleInstance | LocalOnly) {};
33 };
34
35 // FileMethod::Fetch - Fetch a file /*{{{*/
36 // ---------------------------------------------------------------------
37 /* */
38 bool FileMethod::Fetch(FetchItem *Itm)
39 {
40 URI Get = Itm->Uri;
41 string File = Get.Path;
42 FetchResult Res;
43 if (Get.Host.empty() == false)
44 return _error->Error(_("Invalid URI, local URIS must not start with //"));
45
46 // See if the file exists
47 struct stat Buf;
48 if (stat(File.c_str(),&Buf) == 0)
49 {
50 Res.Size = Buf.st_size;
51 Res.Filename = File;
52 Res.LastModified = Buf.st_mtime;
53 Res.IMSHit = false;
54 if (Itm->LastModified == Buf.st_mtime && Itm->LastModified != 0)
55 Res.IMSHit = true;
56 }
57
58 // See if we can compute a file without a .gz exentsion
59 string::size_type Pos = File.rfind(".gz");
60 if (Pos + 3 == File.length())
61 {
62 File = string(File,0,Pos);
63 if (stat(File.c_str(),&Buf) == 0)
64 {
65 FetchResult AltRes;
66 AltRes.Size = Buf.st_size;
67 AltRes.Filename = File;
68 AltRes.LastModified = Buf.st_mtime;
69 AltRes.IMSHit = false;
70 if (Itm->LastModified == Buf.st_mtime && Itm->LastModified != 0)
71 AltRes.IMSHit = true;
72
73 URIDone(Res,&AltRes);
74 return true;
75 }
76 }
77
78 if (Res.Filename.empty() == true)
79 return _error->Error(_("File not found"));
80
81 Hashes Hash;
82 FileFd Fd(Res.Filename, FileFd::ReadOnly);
83 Hash.AddFD(Fd.Fd(), Fd.Size());
84 Res.TakeHashes(Hash);
85 URIDone(Res);
86 return true;
87 }
88 /*}}}*/
89
90 int main()
91 {
92 setlocale(LC_ALL, "");
93
94 FileMethod Mth;
95 return Mth.Run();
96 }