X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/3184b4cf2e8e2009ce62b8f66c666ae7da67e378..2906182db398419a9c59a928b7ae73cf7c7aa307:/methods/mirror.cc diff --git a/methods/mirror.cc b/methods/mirror.cc index e8873d97b..71faaf591 100644 --- a/methods/mirror.cc +++ b/methods/mirror.cc @@ -3,24 +3,31 @@ // $Id: mirror.cc,v 1.59 2004/05/08 19:42:35 mdz Exp $ /* ###################################################################### - Mirror Aquire Method - This is the Mirror aquire method for APT. + Mirror Acquire Method - This is the Mirror acquire method for APT. ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ +#include + +#include #include -#include #include #include #include -#include #include - -#include +#include +#include +#include + +#include +#include +#include +#include #include -#include +#include #include -#include +#include #include using namespace std; @@ -29,7 +36,7 @@ using namespace std; #include "mirror.h" #include "http.h" -#include "apti18n.h" +#include /*}}}*/ /* Done: @@ -41,7 +48,7 @@ using namespace std; * of the failure that is also send to LP * * TODO: - * - deal with runing as non-root because we can't write to the lists + * - deal with running as non-root because we can't write to the lists dir then -> use the cached mirror file * - better method to download than having a pkgAcquire interface here * and better error handling there! @@ -50,9 +57,9 @@ using namespace std; */ MirrorMethod::MirrorMethod() - : HttpMethod(), DownloadedMirrorFile(false) + : HttpMethod("mirror"), DownloadedMirrorFile(false), Debug(false) { -}; +} // HttpMethod::Configuration - Handle a configuration message /*{{{*/ // --------------------------------------------------------------------- @@ -61,7 +68,7 @@ bool MirrorMethod::Configuration(string Message) { if (pkgAcqMethod::Configuration(Message) == false) return false; - Debug = _config->FindB("Debug::Acquire::mirror",false); + Debug = DebugEnabled(); return true; } @@ -82,31 +89,32 @@ bool MirrorMethod::Clean(string Dir) pkgSourceList list; list.ReadMainList(); - DIR *D = opendir(Dir.c_str()); + DIR *D = opendir(Dir.c_str()); if (D == 0) return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str()); - + string StartDir = SafeGetCWD(); if (chdir(Dir.c_str()) != 0) { closedir(D); return _error->Errno("chdir",_("Unable to change to %s"),Dir.c_str()); } - + for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D)) { // Skip some files.. if (strcmp(Dir->d_name,"lock") == 0 || strcmp(Dir->d_name,"partial") == 0 || + strcmp(Dir->d_name,"lost+found") == 0 || strcmp(Dir->d_name,".") == 0 || strcmp(Dir->d_name,"..") == 0) continue; // see if we have that uri - for(I=list.begin(); I != list.end(); I++) + for(I=list.begin(); I != list.end(); ++I) { string uri = (*I)->GetURI(); - if(uri.find("mirror://") != 0) + if(uri.compare(0, strlen("mirror://"), "mirror://") != 0) continue; string BaseUri = uri.substr(0,uri.size()-1); if (URItoFileName(BaseUri) == Dir->d_name) @@ -114,34 +122,102 @@ bool MirrorMethod::Clean(string Dir) } // nothing found, nuke it if (I == list.end()) - unlink(Dir->d_name); - }; - - chdir(StartDir.c_str()); + RemoveFile("mirror", Dir->d_name); + } + closedir(D); - return true; + if (chdir(StartDir.c_str()) != 0) + return _error->Errno("chdir",_("Unable to change to %s"),StartDir.c_str()); + return true; } -bool MirrorMethod::DownloadMirrorFile(string mirror_uri_str) +bool MirrorMethod::DownloadMirrorFile(string /*mirror_uri_str*/) { - if(Debug) - clog << "MirrorMethod::DownloadMirrorFile(): " << endl; - - // not that great to use pkgAcquire here, but we do not have + // not that great to use pkgAcquire here, but we do not have // any other way right now string fetch = BaseUri; fetch.replace(0,strlen("mirror://"),"http://"); +#if 0 // no need for this, the getArchitectures() will also include the main + // arch + // append main architecture + fetch += "?arch=" + _config->Find("Apt::Architecture"); +#endif + + // append all architectures + std::vector vec = APT::Configuration::getArchitectures(); + for (std::vector::const_iterator I = vec.begin(); + I != vec.end(); ++I) + if (I == vec.begin()) + fetch += "?arch=" + (*I); + else + fetch += "&arch=" + (*I); + + // append the dist as a query string + if (Dist != "") + fetch += "&dist=" + Dist; + + if(Debug) + clog << "MirrorMethod::DownloadMirrorFile(): '" << fetch << "'" + << " to " << MirrorFile << endl; + pkgAcquire Fetcher; new pkgAcqFile(&Fetcher, fetch, "", 0, "", "", "", MirrorFile); bool res = (Fetcher.Run() == pkgAcquire::Continue); - if(res) + if(res) { DownloadedMirrorFile = true; + chmod(MirrorFile.c_str(), 0644); + } Fetcher.Shutdown(); + + if(Debug) + clog << "MirrorMethod::DownloadMirrorFile() success: " << res << endl; + return res; } +// Randomizes the lines in the mirror file, this is used so that +// we spread the load on the mirrors evenly +bool MirrorMethod::RandomizeMirrorFile(string mirror_file) +{ + vector content; + string line; + + if (!FileExists(mirror_file)) + return false; + + // read + ifstream in(mirror_file.c_str()); + while ( !in.eof() ) { + getline(in, line); + content.push_back(line); + } + + // we want the file to be random for each different machine, but also + // "stable" on the same machine. this is to avoid running into out-of-sync + // issues (i.e. Release/Release.gpg different on each mirror) + struct utsname buf; + int seed=1; + if(uname(&buf) == 0) { + for(int i=0,seed=1; buf.nodename[i] != 0; ++i) { + seed = seed * 31 + buf.nodename[i]; + } + } + srand( seed ); + random_shuffle(content.begin(), content.end()); + + // write + ofstream out(mirror_file.c_str()); + while ( !content.empty()) { + line = content.back(); + content.pop_back(); + out << line << "\n"; + } + + return true; +} + /* convert a the Queue->Uri back to the mirror base uri and look * at all mirrors we have for this, this is needed as queue->uri * may point to different mirrors (if TryNextMirror() was run) @@ -176,11 +252,15 @@ bool MirrorMethod::TryNextMirror() continue; vector::const_iterator nextmirror = mirror + 1; - if (nextmirror != AllMirrors.end()) + if (nextmirror == AllMirrors.end()) break; Queue->Uri.replace(0, mirror->length(), *nextmirror); if (Debug) clog << "TryNextMirror: " << Queue->Uri << endl; + + // inform parent + UsedMirror = *nextmirror; + Log("Switching mirror"); return true; } @@ -200,10 +280,17 @@ bool MirrorMethod::InitMirrors() return _error->Error(_("No mirror file '%s' found "), MirrorFile.c_str()); } + if (access(MirrorFile.c_str(), R_OK) != 0) + { + // FIXME: fallback to a default mirror here instead + // and provide a config option to define that default + return _error->Error(_("Can not read mirror file '%s'"), MirrorFile.c_str()); + } + // FIXME: make the mirror selection more clever, do not // just use the first one! // BUT: we can not make this random, the mirror has to be - // stable accross session, because otherwise we can + // stable across session, because otherwise we can // get into sync issues (got indexfiles from mirror A, // but packages from mirror B - one might be out of date etc) ifstream in(MirrorFile.c_str()); @@ -211,8 +298,21 @@ bool MirrorMethod::InitMirrors() while (!in.eof()) { getline(in, s); - if (s.size() > 0) - AllMirrors.push_back(s); + + // ignore lines that start with # + if (s.find("#") == 0) + continue; + // ignore empty lines + if (s.size() == 0) + continue; + // ignore non http lines + if (s.compare(0, strlen("http://"), "http://") != 0) + continue; + + AllMirrors.push_back(s); + } + if (AllMirrors.empty()) { + return _error->Error(_("No entry found in mirror file '%s'"), MirrorFile.c_str()); } Mirror = AllMirrors[0]; UsedMirror = Mirror; @@ -253,7 +353,7 @@ string MirrorMethod::GetMirrorFileName(string mirror_uri_str) vector::const_iterator I; pkgSourceList list; list.ReadMainList(); - for(I=list.begin(); I != list.end(); I++) + for(I=list.begin(); I != list.end(); ++I) { string uristr = (*I)->GetURI(); if(Debug) @@ -266,6 +366,7 @@ string MirrorMethod::GetMirrorFileName(string mirror_uri_str) if(Debug) std::cerr << "found BaseURI: " << uristr << std::endl; BaseUri = uristr.substr(0,uristr.size()-1); + Dist = (*I)->GetDist(); } } // get new file @@ -303,7 +404,8 @@ bool MirrorMethod::Fetch(FetchItem *Itm) if(Itm->IndexFile && !DownloadedMirrorFile) { Clean(_config->FindDir("Dir::State::mirrors")); - DownloadMirrorFile(Itm->Uri); + if (DownloadMirrorFile(Itm->Uri)) + RandomizeMirrorFile(MirrorFile); } if(AllMirrors.empty()) { @@ -320,10 +422,10 @@ bool MirrorMethod::Fetch(FetchItem *Itm) if(Debug) clog << "Fetch: " << Itm->Uri << endl << endl; - + // now run the real fetcher return HttpMethod::Fetch(Itm); -}; +} void MirrorMethod::Fail(string Err,bool Transient) { @@ -335,7 +437,7 @@ void MirrorMethod::Fail(string Err,bool Transient) // try the next mirror on fail (if its not a expected failure, // e.g. translations are ok to ignore) - if (!Queue->FailIgnore && TryNextMirror()) + if (!Queue->FailIgnore && TryNextMirror()) return; // all mirrors failed, so bail out @@ -362,11 +464,7 @@ void MirrorMethod::URIDone(FetchResult &Res,FetchResult *Alt) int main() { - setlocale(LC_ALL, ""); - - MirrorMethod Mth; - - return Mth.Loop(); + return MirrorMethod().Loop(); }