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5f6b130d MV |
1 | // -*- mode: cpp; mode: fold -*- |
2 | // Description /*{{{*/ | |
3 | // $Id: mirror.cc,v 1.59 2004/05/08 19:42:35 mdz Exp $ | |
4 | /* ###################################################################### | |
5 | ||
6 | Mirror Aquire Method - This is the Mirror aquire method for APT. | |
7 | ||
8 | ##################################################################### */ | |
9 | /*}}}*/ | |
10 | // Include Files /*{{{*/ | |
11 | #include <apt-pkg/fileutl.h> | |
12 | #include <apt-pkg/acquire-method.h> | |
13 | #include <apt-pkg/acquire-item.h> | |
14 | #include <apt-pkg/acquire.h> | |
15 | #include <apt-pkg/error.h> | |
16 | #include <apt-pkg/hashes.h> | |
0c312e0e | 17 | #include <apt-pkg/sourcelist.h> |
5f6b130d MV |
18 | |
19 | #include <fstream> | |
20 | #include <iostream> | |
14e097c1 | 21 | #include <stdarg.h> |
d731f9c5 | 22 | #include <sys/stat.h> |
70288656 MV |
23 | #include <sys/types.h> |
24 | #include <dirent.h> | |
14e097c1 | 25 | |
5f6b130d MV |
26 | using namespace std; |
27 | ||
28 | #include "mirror.h" | |
29 | #include "http.h" | |
70288656 | 30 | #include "apti18n.h" |
5f6b130d MV |
31 | /*}}}*/ |
32 | ||
362d2934 | 33 | /* Done: |
59271f62 | 34 | * - works with http (only!) |
362d2934 MV |
35 | * - always picks the first mirror from the list |
36 | * - call out to problem reporting script | |
37 | * - supports "deb mirror://host/path/to/mirror-list/// dist component" | |
59271f62 MV |
38 | * - use pkgAcqMethod::FailReason() to have a string representation |
39 | * of the failure that is also send to LP | |
362d2934 | 40 | * |
86c17f0a | 41 | * TODO: |
d731f9c5 MV |
42 | * - deal with runing as non-root because we can't write to the lists |
43 | dir then -> use the cached mirror file | |
86c17f0a | 44 | * - better method to download than having a pkgAcquire interface here |
36280399 | 45 | * - magicmarker is evil, maybe just use a similar approach as in |
933833c5 MV |
46 | clean and read the sources.list and use the GetURI() method to find |
47 | the prefix? | |
362d2934 | 48 | * support more than http |
86c17f0a | 49 | * - testing :) |
86c17f0a MV |
50 | */ |
51 | ||
5f6b130d | 52 | MirrorMethod::MirrorMethod() |
14e097c1 | 53 | : HttpMethod(), HasMirrorFile(false) |
5f6b130d MV |
54 | { |
55 | #if 0 | |
56 | HasMirrorFile=true; | |
14e097c1 MV |
57 | BaseUri="mirror://people.ubuntu.com/~mvo/mirror/mirrors"; |
58 | MirrorFile="/var/lib/apt/lists/people.ubuntu.com_%7emvo_apt_mirror_mirrors"; | |
5f6b130d MV |
59 | Mirror="http://de.archive.ubuntu.com/ubuntu/"; |
60 | #endif | |
61 | }; | |
62 | ||
14e097c1 MV |
63 | // HttpMethod::Configuration - Handle a configuration message /*{{{*/ |
64 | // --------------------------------------------------------------------- | |
65 | /* We stash the desired pipeline depth */ | |
66 | bool MirrorMethod::Configuration(string Message) | |
67 | { | |
68 | if (pkgAcqMethod::Configuration(Message) == false) | |
69 | return false; | |
70 | Debug = _config->FindB("Debug::Acquire::mirror",false); | |
71 | ||
72 | return true; | |
73 | } | |
74 | /*}}}*/ | |
75 | ||
d731f9c5 | 76 | // clean the mirrors dir based on ttl information |
70288656 | 77 | bool MirrorMethod::Clean(string Dir) |
d731f9c5 | 78 | { |
0c312e0e MV |
79 | vector<metaIndex *>::const_iterator I; |
80 | ||
81 | if(Debug) | |
82 | clog << "MirrorMethod::Clean(): " << Dir << endl; | |
83 | ||
84 | // read sources.list | |
85 | pkgSourceList list; | |
86 | list.ReadMainList(); | |
70288656 MV |
87 | |
88 | DIR *D = opendir(Dir.c_str()); | |
89 | if (D == 0) | |
90 | return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str()); | |
91 | ||
92 | string StartDir = SafeGetCWD(); | |
93 | if (chdir(Dir.c_str()) != 0) | |
94 | { | |
95 | closedir(D); | |
96 | return _error->Errno("chdir",_("Unable to change to %s"),Dir.c_str()); | |
97 | } | |
98 | ||
99 | for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D)) | |
100 | { | |
101 | // Skip some files.. | |
102 | if (strcmp(Dir->d_name,"lock") == 0 || | |
103 | strcmp(Dir->d_name,"partial") == 0 || | |
104 | strcmp(Dir->d_name,".") == 0 || | |
105 | strcmp(Dir->d_name,"..") == 0) | |
106 | continue; | |
0c312e0e MV |
107 | |
108 | // see if we have that uri | |
109 | for(I=list.begin(); I != list.end(); I++) | |
70288656 | 110 | { |
0c312e0e MV |
111 | string uri = (*I)->GetURI(); |
112 | if(uri.substr(0,strlen("mirror://")) != string("mirror://")) | |
113 | continue; | |
114 | string Marker = _config->Find("Acquire::Mirror::MagicMarker","///"); | |
115 | string BaseUri = uri.substr(0,uri.find(Marker)); | |
116 | if (URItoFileName(BaseUri) == Dir->d_name) | |
117 | break; | |
70288656 | 118 | } |
0c312e0e MV |
119 | // nothing found, nuke it |
120 | if (I == list.end()) | |
70288656 | 121 | unlink(Dir->d_name); |
70288656 | 122 | }; |
d731f9c5 | 123 | |
70288656 MV |
124 | chdir(StartDir.c_str()); |
125 | closedir(D); | |
126 | return true; | |
d731f9c5 MV |
127 | } |
128 | ||
14e097c1 | 129 | |
5f6b130d MV |
130 | bool MirrorMethod::GetMirrorFile(string uri) |
131 | { | |
132 | string Marker = _config->Find("Acquire::Mirror::MagicMarker","///"); | |
133 | BaseUri = uri.substr(0,uri.find(Marker)); | |
14e097c1 MV |
134 | |
135 | string fetch = BaseUri; | |
136 | fetch.replace(0,strlen("mirror://"),"http://"); | |
5f6b130d | 137 | |
70288656 | 138 | // get new file |
d731f9c5 | 139 | MirrorFile = _config->FindDir("Dir::State::mirrors") + URItoFileName(BaseUri); |
5f6b130d | 140 | |
14e097c1 MV |
141 | if(Debug) |
142 | { | |
143 | cerr << "base-uri: " << BaseUri << endl; | |
144 | cerr << "mirror-file: " << MirrorFile << endl; | |
145 | } | |
5f6b130d | 146 | |
d731f9c5 MV |
147 | // check the file, if it is not older than RefreshInterval just use it |
148 | // otherwise try to get a new one | |
149 | if(FileExists(MirrorFile)) | |
150 | { | |
151 | struct stat buf; | |
152 | time_t t,now,refresh; | |
153 | if(stat(MirrorFile.c_str(), &buf) != 0) | |
154 | return false; | |
155 | t = std::max(buf.st_mtime, buf.st_ctime); | |
156 | now = time(NULL); | |
157 | refresh = 60*_config->FindI("Acquire::Mirror::RefreshInterval",360); | |
158 | if(t + refresh > now) | |
159 | { | |
160 | if(Debug) | |
161 | clog << "Mirror file is in RefreshInterval" << endl; | |
162 | HasMirrorFile = true; | |
163 | return true; | |
164 | } | |
165 | if(Debug) | |
70288656 | 166 | clog << "Mirror file " << MirrorFile << " older than " << refresh << "min, re-download it" << endl; |
d731f9c5 MV |
167 | } |
168 | ||
169 | // not that great to use pkgAcquire here, but we do not have | |
170 | // any other way right now | |
5f6b130d | 171 | pkgAcquire Fetcher; |
14e097c1 | 172 | new pkgAcqFile(&Fetcher, fetch, "", 0, "", "", "", MirrorFile); |
5f6b130d | 173 | bool res = (Fetcher.Run() == pkgAcquire::Continue); |
d731f9c5 | 174 | if(res) |
5f6b130d MV |
175 | HasMirrorFile = true; |
176 | Fetcher.Shutdown(); | |
d731f9c5 | 177 | return res; |
5f6b130d MV |
178 | } |
179 | ||
180 | bool MirrorMethod::SelectMirror() | |
181 | { | |
d731f9c5 MV |
182 | // FIXME: make the mirror selection more clever, do not |
183 | // just use the first one! | |
5f6b130d MV |
184 | ifstream in(MirrorFile.c_str()); |
185 | getline(in, Mirror); | |
14e097c1 MV |
186 | if(Debug) |
187 | cerr << "Using mirror: " << Mirror << endl; | |
36280399 MV |
188 | |
189 | UsedMirror = Mirror; | |
14e097c1 | 190 | return true; |
5f6b130d MV |
191 | } |
192 | ||
193 | // MirrorMethod::Fetch - Fetch an item /*{{{*/ | |
194 | // --------------------------------------------------------------------- | |
195 | /* This adds an item to the pipeline. We keep the pipeline at a fixed | |
196 | depth. */ | |
197 | bool MirrorMethod::Fetch(FetchItem *Itm) | |
198 | { | |
d731f9c5 | 199 | // select mirror only once per session |
5f6b130d MV |
200 | if(!HasMirrorFile) |
201 | { | |
70288656 | 202 | Clean(_config->FindDir("Dir::State::mirrors")); |
5f6b130d MV |
203 | GetMirrorFile(Itm->Uri); |
204 | SelectMirror(); | |
205 | } | |
206 | ||
ef1e6d88 MV |
207 | for (FetchItem *I = Queue; I != 0; I = I->Next) |
208 | { | |
209 | if(I->Uri.find("mirror://") != string::npos) | |
210 | I->Uri.replace(0,BaseUri.size(),Mirror); | |
211 | } | |
5f6b130d | 212 | |
14e097c1 MV |
213 | // now run the real fetcher |
214 | return HttpMethod::Fetch(Itm); | |
5f6b130d MV |
215 | }; |
216 | ||
14e097c1 MV |
217 | void MirrorMethod::Fail(string Err,bool Transient) |
218 | { | |
219 | if(Queue->Uri.find("http://") != string::npos) | |
220 | Queue->Uri.replace(0,Mirror.size(), BaseUri); | |
221 | pkgAcqMethod::Fail(Err, Transient); | |
222 | } | |
223 | ||
224 | void MirrorMethod::URIStart(FetchResult &Res) | |
225 | { | |
226 | if(Queue->Uri.find("http://") != string::npos) | |
227 | Queue->Uri.replace(0,Mirror.size(), BaseUri); | |
228 | pkgAcqMethod::URIStart(Res); | |
229 | } | |
230 | ||
231 | void MirrorMethod::URIDone(FetchResult &Res,FetchResult *Alt) | |
232 | { | |
233 | if(Queue->Uri.find("http://") != string::npos) | |
234 | Queue->Uri.replace(0,Mirror.size(), BaseUri); | |
235 | pkgAcqMethod::URIDone(Res, Alt); | |
236 | } | |
237 | ||
238 | ||
5f6b130d MV |
239 | int main() |
240 | { | |
241 | setlocale(LC_ALL, ""); | |
242 | ||
243 | MirrorMethod Mth; | |
244 | ||
14e097c1 | 245 | return Mth.Loop(); |
5f6b130d MV |
246 | } |
247 | ||
248 |