X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/ef1e6d8822bb34527bba5d2318b5768013efd010..c040d0b5e811399359c62fde1d5916b240053bda:/methods/mirror.cc diff --git a/methods/mirror.cc b/methods/mirror.cc index 4de981522..9fe64fd70 100644 --- a/methods/mirror.cc +++ b/methods/mirror.cc @@ -14,37 +14,42 @@ #include #include #include +#include #include #include #include +#include +#include +#include using namespace std; #include "mirror.h" #include "http.h" - +#include "apti18n.h" /*}}}*/ -/* +/* Done: + * - works with http (only!) + * - always picks the first mirror from the list + * - call out to problem reporting script + * - supports "deb mirror://host/path/to/mirror-list/// dist component" + * - uses pkgAcqMethod::FailReason() to have a string representation + * of the failure that is also send to LP + * * TODO: + * - deal with runing 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 - * - support keeping the mirror file around (evil listclearer strikes again) - * -> /var/lib/apt/mirrors dir? how to cleanup? by time? - * - provide some TTL time until the mirror file is get again (1h? 6h?) - * - deal with runing as non-root (we can't write to the lists dir then) + * and better error handling there! + * - support more than http * - testing :) */ MirrorMethod::MirrorMethod() : HttpMethod(), HasMirrorFile(false) { -#if 0 - HasMirrorFile=true; - BaseUri="mirror://people.ubuntu.com/~mvo/mirror/mirrors"; - MirrorFile="/var/lib/apt/lists/people.ubuntu.com_%7emvo_apt_mirror_mirrors"; - Mirror="http://de.archive.ubuntu.com/ubuntu/"; -#endif }; // HttpMethod::Configuration - Handle a configuration message /*{{{*/ @@ -60,16 +65,112 @@ bool MirrorMethod::Configuration(string Message) } /*}}}*/ +// clean the mirrors dir based on ttl information +bool MirrorMethod::Clean(string Dir) +{ + vector::const_iterator I; + + if(Debug) + clog << "MirrorMethod::Clean(): " << Dir << endl; + + // read sources.list + pkgSourceList list; + list.ReadMainList(); + + 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,".") == 0 || + strcmp(Dir->d_name,"..") == 0) + continue; + + // see if we have that uri + for(I=list.begin(); I != list.end(); I++) + { + string uri = (*I)->GetURI(); + if(uri.substr(0,strlen("mirror://")) != string("mirror://")) + continue; + string BaseUri = uri.substr(0,uri.size()-1); + if (URItoFileName(BaseUri) == Dir->d_name) + break; + } + // nothing found, nuke it + if (I == list.end()) + unlink(Dir->d_name); + }; + + chdir(StartDir.c_str()); + closedir(D); + return true; +} + -bool MirrorMethod::GetMirrorFile(string uri) +bool MirrorMethod::GetMirrorFile(string mirror_uri_str) { - string Marker = _config->Find("Acquire::Mirror::MagicMarker","///"); - BaseUri = uri.substr(0,uri.find(Marker)); + /* + - a mirror_uri_str looks like this: + mirror://people.ubuntu.com/~mvo/apt/mirror/mirrors/dists/feisty/Release.gpg + + - the matching source.list entry + deb mirror://people.ubuntu.com/~mvo/apt/mirror/mirrors feisty main + + - we actually want to go after: + http://people.ubuntu.com/~mvo/apt/mirror/mirrors + + And we need to save the BaseUri for later: + - mirror://people.ubuntu.com/~mvo/apt/mirror/mirrors + FIXME: what if we have two similar prefixes? + mirror://people.ubuntu.com/~mvo/mirror + mirror://people.ubuntu.com/~mvo/mirror2 + then mirror_uri_str looks like: + mirror://people.ubuntu.com/~mvo/apt/mirror/dists/feisty/Release.gpg + mirror://people.ubuntu.com/~mvo/apt/mirror2/dists/feisty/Release.gpg + we search sources.list and find: + mirror://people.ubuntu.com/~mvo/apt/mirror + in both cases! So we need to apply some domain knowledge here :( and + check for /dists/ or /Release.gpg as suffixes + */ + if(Debug) + std::cerr << "GetMirrorFile: " << mirror_uri_str << std::endl; + + // read sources.list and find match + vector::const_iterator I; + pkgSourceList list; + list.ReadMainList(); + for(I=list.begin(); I != list.end(); I++) + { + string uristr = (*I)->GetURI(); + if(Debug) + std::cerr << "Checking: " << uristr << std::endl; + if(uristr.substr(0,strlen("mirror://")) != string("mirror://")) + continue; + // find matching uri in sources.list + if(mirror_uri_str.substr(0,uristr.size()) == uristr) + { + if(Debug) + std::cerr << "found BaseURI: " << uristr << std::endl; + BaseUri = uristr.substr(0,uristr.size()-1); + } + } string fetch = BaseUri; fetch.replace(0,strlen("mirror://"),"http://"); - MirrorFile = _config->FindDir("Dir::State::lists") + URItoFileName(BaseUri); + // get new file + MirrorFile = _config->FindDir("Dir::State::mirrors") + URItoFileName(BaseUri); if(Debug) { @@ -77,23 +178,49 @@ bool MirrorMethod::GetMirrorFile(string uri) cerr << "mirror-file: " << MirrorFile << endl; } - // FIXME: fetch it with curl + // check the file, if it is not older than RefreshInterval just use it + // otherwise try to get a new one + if(FileExists(MirrorFile)) + { + struct stat buf; + time_t t,now,refresh; + if(stat(MirrorFile.c_str(), &buf) != 0) + return false; + t = std::max(buf.st_mtime, buf.st_ctime); + now = time(NULL); + refresh = 60*_config->FindI("Acquire::Mirror::RefreshInterval",360); + if(t + refresh > now) + { + if(Debug) + clog << "Mirror file is in RefreshInterval" << endl; + HasMirrorFile = true; + return true; + } + if(Debug) + clog << "Mirror file " << MirrorFile << " older than " << refresh << "min, re-download it" << endl; + } + + // not that great to use pkgAcquire here, but we do not have + // any other way right now pkgAcquire Fetcher; new pkgAcqFile(&Fetcher, fetch, "", 0, "", "", "", MirrorFile); bool res = (Fetcher.Run() == pkgAcquire::Continue); - - if(res) + if(res) HasMirrorFile = true; Fetcher.Shutdown(); - return true; + return res; } bool MirrorMethod::SelectMirror() { + // FIXME: make the mirror selection more clever, do not + // just use the first one! ifstream in(MirrorFile.c_str()); getline(in, Mirror); if(Debug) cerr << "Using mirror: " << Mirror << endl; + + UsedMirror = Mirror; return true; } @@ -103,9 +230,10 @@ bool MirrorMethod::SelectMirror() depth. */ bool MirrorMethod::Fetch(FetchItem *Itm) { - // get mirror information + // select mirror only once per session if(!HasMirrorFile) { + Clean(_config->FindDir("Dir::State::mirrors")); GetMirrorFile(Itm->Uri); SelectMirror(); }