#include <apt-pkg/acquire.h>
#include <apt-pkg/error.h>
#include <apt-pkg/hashes.h>
+#include <apt-pkg/sourcelist.h>
#include <fstream>
#include <iostream>
#include <stdarg.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
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?)
+ * and better error handling there!
+ * - support more than http
* - testing :)
*/
MirrorMethod::MirrorMethod()
- : HttpMethod(), HasMirrorFile(false)
+ : HttpMethod(), DownloadedMirrorFile(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 /*{{{*/
}
/*}}}*/
-
-bool MirrorMethod::GetMirrorFile(string uri)
+// clean the mirrors dir based on ttl information
+bool MirrorMethod::Clean(string Dir)
{
- string Marker = _config->Find("Acquire::Mirror::MagicMarker","///");
- BaseUri = uri.substr(0,uri.find(Marker));
+ vector<metaIndex *>::const_iterator I;
- string fetch = BaseUri;
- fetch.replace(0,strlen("mirror://"),"http://");
+ if(Debug)
+ clog << "MirrorMethod::Clean(): " << Dir << endl;
- MirrorFile = _config->FindDir("Dir::State::lists") + URItoFileName(BaseUri);
+ if(Dir == "/")
+ return _error->Error("will not clean: '/'");
- if(Debug)
+ // 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)
{
- cerr << "base-uri: " << BaseUri << endl;
- cerr << "mirror-file: " << MirrorFile << endl;
+ 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::DownloadMirrorFile(string mirror_uri_str)
+{
+
+ // 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;
+ DownloadedMirrorFile = true;
+ return true;
+ }
+ if(Debug)
+ clog << "Mirror file " << MirrorFile << " older than " << refresh << "min, re-download it" << endl;
}
- // FIXME: fetch it with curl
+ // 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://");
+
pkgAcquire Fetcher;
new pkgAcqFile(&Fetcher, fetch, "", 0, "", "", "", MirrorFile);
bool res = (Fetcher.Run() == pkgAcquire::Continue);
-
- if(res)
- HasMirrorFile = true;
+ if(res)
+ DownloadedMirrorFile = true;
Fetcher.Shutdown();
- return true;
+ return res;
}
bool MirrorMethod::SelectMirror()
{
+ // if we do not have a MirrorFile, fallback
+ if(!FileExists(MirrorFile))
+ {
+ // FIXME: fallback to a default mirror here instead
+ // and provide a config option to define that default
+ return _error->Error(_("No mirror file '%s' found "), 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
+ // 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());
getline(in, Mirror);
if(Debug)
cerr << "Using mirror: " << Mirror << endl;
+
+ UsedMirror = Mirror;
return true;
}
+string MirrorMethod::GetMirrorFileName(string mirror_uri_str)
+{
+ /*
+ - 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
+ */
+ string name;
+ if(Debug)
+ std::cerr << "GetMirrorFileName: " << mirror_uri_str << std::endl;
+
+ // read sources.list and find match
+ vector<metaIndex *>::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);
+ }
+ }
+ // get new file
+ name = _config->FindDir("Dir::State::mirrors") + URItoFileName(BaseUri);
+
+ if(Debug)
+ {
+ cerr << "base-uri: " << BaseUri << endl;
+ cerr << "mirror-file: " << name << endl;
+ }
+ return name;
+}
+
// MirrorMethod::Fetch - Fetch an item /*{{{*/
// ---------------------------------------------------------------------
/* This adds an item to the pipeline. We keep the pipeline at a fixed
depth. */
bool MirrorMethod::Fetch(FetchItem *Itm)
{
- // get mirror information
- if(!HasMirrorFile)
+ // the http method uses Fetch(0) as a way to update the pipeline,
+ // just let it do its work in this case - Fetch() with a valid
+ // Itm will always run before the first Fetch(0)
+ if(Itm == NULL)
+ return HttpMethod::Fetch(Itm);
+
+ // if we don't have the name of the mirror file on disk yet,
+ // calculate it now (can be derived from the uri)
+ if(MirrorFile.empty())
+ MirrorFile = GetMirrorFileName(Itm->Uri);
+
+ // download mirror file once (if we are after index files)
+ if(Itm->IndexFile && !DownloadedMirrorFile)
{
- GetMirrorFile(Itm->Uri);
- SelectMirror();
+ Clean(_config->FindDir("Dir::State::mirrors"));
+ DownloadMirrorFile(Itm->Uri);
}
- if(Queue->Uri.find("mirror://") != string::npos)
- Queue->Uri.replace(0,BaseUri.size(),Mirror);
+ if(Mirror.empty())
+ SelectMirror();
+ for (FetchItem *I = Queue; I != 0; I = I->Next)
+ {
+ if(I->Uri.find("mirror://") != string::npos)
+ I->Uri.replace(0,BaseUri.size(), Mirror);
+ }
+
// now run the real fetcher
return HttpMethod::Fetch(Itm);
};
projects / apt.git / blobdiff