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-rw-r--r--cmdline/indexcopy.cc524
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diff --git a/cmdline/indexcopy.cc b/cmdline/indexcopy.cc
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-// -*- mode: cpp; mode: fold -*-
-// Description /*{{{*/
-// $Id: indexcopy.cc,v 1.10 2002/03/26 07:38:58 jgg Exp $
-/* ######################################################################
-
- Index Copying - Aid for copying and verifying the index files
-
- This class helps apt-cache reconstruct a damaged index files.
-
- ##################################################################### */
- /*}}}*/
-// Include Files /*{{{*/
-#include "indexcopy.h"
-
-#include <apt-pkg/error.h>
-#include <apt-pkg/progress.h>
-#include <apt-pkg/strutl.h>
-#include <apt-pkg/fileutl.h>
-#include <apt-pkg/configuration.h>
-#include <apt-pkg/tagfile.h>
-
-#include <iostream>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <stdio.h>
- /*}}}*/
-
-using namespace std;
-
-// IndexCopy::CopyPackages - Copy the package files from the CD /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool IndexCopy::CopyPackages(string CDROM,string Name,vector<string> &List)
-{
- if (List.size() == 0)
- return true;
-
- OpTextProgress Progress;
-
- bool NoStat = _config->FindB("APT::CDROM::Fast",false);
- bool Debug = _config->FindB("Debug::aptcdrom",false);
-
- // Prepare the progress indicator
- unsigned long TotalSize = 0;
- for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
- {
- struct stat Buf;
- if (stat(string(*I + GetFileName()).c_str(),&Buf) != 0 &&
- stat(string(*I + GetFileName() + ".gz").c_str(),&Buf) != 0)
- return _error->Errno("stat","Stat failed for %s",
- string(*I + GetFileName()).c_str());
- TotalSize += Buf.st_size;
- }
-
- unsigned long CurrentSize = 0;
- unsigned int NotFound = 0;
- unsigned int WrongSize = 0;
- unsigned int Packages = 0;
- for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
- {
- string OrigPath = string(*I,CDROM.length());
- unsigned long FileSize = 0;
-
- // Open the package file
- FileFd Pkg;
- if (FileExists(*I + GetFileName()) == true)
- {
- Pkg.Open(*I + GetFileName(),FileFd::ReadOnly);
- FileSize = Pkg.Size();
- }
- else
- {
- FileFd From(*I + GetFileName() + ".gz",FileFd::ReadOnly);
- if (_error->PendingError() == true)
- return false;
- FileSize = From.Size();
-
- // Get a temp file
- FILE *tmp = tmpfile();
- if (tmp == 0)
- return _error->Errno("tmpfile","Unable to create a tmp file");
- Pkg.Fd(dup(fileno(tmp)));
- fclose(tmp);
-
- // Fork gzip
- pid_t Process = fork();
- if (Process < 0)
- return _error->Errno("fork","Couldn't fork gzip");
-
- // The child
- if (Process == 0)
- {
- dup2(From.Fd(),STDIN_FILENO);
- dup2(Pkg.Fd(),STDOUT_FILENO);
- SetCloseExec(STDIN_FILENO,false);
- SetCloseExec(STDOUT_FILENO,false);
-
- const char *Args[3];
- string Tmp = _config->Find("Dir::bin::gzip","gzip");
- Args[0] = Tmp.c_str();
- Args[1] = "-d";
- Args[2] = 0;
- execvp(Args[0],(char **)Args);
- exit(100);
- }
-
- // Wait for gzip to finish
- if (ExecWait(Process,_config->Find("Dir::bin::gzip","gzip").c_str(),false) == false)
- return _error->Error("gzip failed, perhaps the disk is full.");
-
- Pkg.Seek(0);
- }
- pkgTagFile Parser(&Pkg);
- if (_error->PendingError() == true)
- return false;
-
- // Open the output file
- char S[400];
- snprintf(S,sizeof(S),"cdrom:[%s]/%s%s",Name.c_str(),
- (*I).c_str() + CDROM.length(),GetFileName());
- string TargetF = _config->FindDir("Dir::State::lists") + "partial/";
- TargetF += URItoFileName(S);
- if (_config->FindB("APT::CDROM::NoAct",false) == true)
- TargetF = "/dev/null";
- FileFd Target(TargetF,FileFd::WriteEmpty);
- FILE *TargetFl = fdopen(dup(Target.Fd()),"w");
- if (_error->PendingError() == true)
- return false;
- if (TargetFl == 0)
- return _error->Errno("fdopen","Failed to reopen fd");
-
- // Setup the progress meter
- Progress.OverallProgress(CurrentSize,TotalSize,FileSize,
- string("Reading ") + Type() + " Indexes");
-
- // Parse
- Progress.SubProgress(Pkg.Size());
- pkgTagSection Section;
- this->Section = &Section;
- string Prefix;
- unsigned long Hits = 0;
- unsigned long Chop = 0;
- while (Parser.Step(Section) == true)
- {
- Progress.Progress(Parser.Offset());
- string File;
- unsigned long Size;
- if (GetFile(File,Size) == false)
- {
- fclose(TargetFl);
- return false;
- }
-
- if (Chop != 0)
- File = OrigPath + ChopDirs(File,Chop);
-
- // See if the file exists
- bool Mangled = false;
- if (NoStat == false || Hits < 10)
- {
- // Attempt to fix broken structure
- if (Hits == 0)
- {
- if (ReconstructPrefix(Prefix,OrigPath,CDROM,File) == false &&
- ReconstructChop(Chop,*I,File) == false)
- {
- if (Debug == true)
- clog << "Missed: " << File << endl;
- NotFound++;
- continue;
- }
- if (Chop != 0)
- File = OrigPath + ChopDirs(File,Chop);
- }
-
- // Get the size
- struct stat Buf;
- if (stat(string(CDROM + Prefix + File).c_str(),&Buf) != 0 ||
- Buf.st_size == 0)
- {
- // Attempt to fix busted symlink support for one instance
- string OrigFile = File;
- string::size_type Start = File.find("binary-");
- string::size_type End = File.find("/",Start+3);
- if (Start != string::npos && End != string::npos)
- {
- File.replace(Start,End-Start,"binary-all");
- Mangled = true;
- }
-
- if (Mangled == false ||
- stat(string(CDROM + Prefix + File).c_str(),&Buf) != 0)
- {
- if (Debug == true)
- clog << "Missed(2): " << OrigFile << endl;
- NotFound++;
- continue;
- }
- }
-
- // Size match
- if ((unsigned)Buf.st_size != Size)
- {
- if (Debug == true)
- clog << "Wrong Size: " << File << endl;
- WrongSize++;
- continue;
- }
- }
-
- Packages++;
- Hits++;
-
- if (RewriteEntry(TargetFl,File) == false)
- {
- fclose(TargetFl);
- return false;
- }
- }
- fclose(TargetFl);
-
- if (Debug == true)
- cout << " Processed by using Prefix '" << Prefix << "' and chop " << Chop << endl;
-
- if (_config->FindB("APT::CDROM::NoAct",false) == false)
- {
- // Move out of the partial directory
- Target.Close();
- string FinalF = _config->FindDir("Dir::State::lists");
- FinalF += URItoFileName(S);
- if (rename(TargetF.c_str(),FinalF.c_str()) != 0)
- return _error->Errno("rename","Failed to rename");
-
- // Copy the release file
- snprintf(S,sizeof(S),"cdrom:[%s]/%sRelease",Name.c_str(),
- (*I).c_str() + CDROM.length());
- string TargetF = _config->FindDir("Dir::State::lists") + "partial/";
- TargetF += URItoFileName(S);
- if (FileExists(*I + "Release") == true)
- {
- FileFd Target(TargetF,FileFd::WriteEmpty);
- FileFd Rel(*I + "Release",FileFd::ReadOnly);
- if (_error->PendingError() == true)
- return false;
-
- if (CopyFile(Rel,Target) == false)
- return false;
- }
- else
- {
- // Empty release file
- FileFd Target(TargetF,FileFd::WriteEmpty);
- }
-
- // Rename the release file
- FinalF = _config->FindDir("Dir::State::lists");
- FinalF += URItoFileName(S);
- if (rename(TargetF.c_str(),FinalF.c_str()) != 0)
- return _error->Errno("rename","Failed to rename");
- }
-
- /* Mangle the source to be in the proper notation with
- prefix dist [component] */
- *I = string(*I,Prefix.length());
- ConvertToSourceList(CDROM,*I);
- *I = Prefix + ' ' + *I;
-
- CurrentSize += FileSize;
- }
- Progress.Done();
-
- // Some stats
- cout << "Wrote " << Packages << " records" ;
- if (NotFound != 0)
- cout << " with " << NotFound << " missing files";
- if (NotFound != 0 && WrongSize != 0)
- cout << " and";
- if (WrongSize != 0)
- cout << " with " << WrongSize << " mismatched files";
- cout << '.' << endl;
-
- if (Packages == 0)
- _error->Warning("No valid records were found.");
-
- if (NotFound + WrongSize > 10)
- cout << "Alot of entries were discarded, something may be wrong." << endl;
-
- return true;
-}
- /*}}}*/
-// IndexCopy::ChopDirs - Chop off the leading directory components /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-string IndexCopy::ChopDirs(string Path,unsigned int Depth)
-{
- string::size_type I = 0;
- do
- {
- I = Path.find('/',I+1);
- Depth--;
- }
- while (I != string::npos && Depth != 0);
-
- if (I == string::npos)
- return string();
-
- return string(Path,I+1);
-}
- /*}}}*/
-// IndexCopy::ReconstructPrefix - Fix strange prefixing /*{{{*/
-// ---------------------------------------------------------------------
-/* This prepends dir components from the path to the package files to
- the path to the deb until it is found */
-bool IndexCopy::ReconstructPrefix(string &Prefix,string OrigPath,string CD,
- string File)
-{
- bool Debug = _config->FindB("Debug::aptcdrom",false);
- unsigned int Depth = 1;
- string MyPrefix = Prefix;
- while (1)
- {
- struct stat Buf;
- if (stat(string(CD + MyPrefix + File).c_str(),&Buf) != 0)
- {
- if (Debug == true)
- cout << "Failed, " << CD + MyPrefix + File << endl;
- if (GrabFirst(OrigPath,MyPrefix,Depth++) == true)
- continue;
-
- return false;
- }
- else
- {
- Prefix = MyPrefix;
- return true;
- }
- }
- return false;
-}
- /*}}}*/
-// IndexCopy::ReconstructChop - Fixes bad source paths /*{{{*/
-// ---------------------------------------------------------------------
-/* This removes path components from the filename and prepends the location
- of the package files until a file is found */
-bool IndexCopy::ReconstructChop(unsigned long &Chop,string Dir,string File)
-{
- // Attempt to reconstruct the filename
- unsigned long Depth = 0;
- while (1)
- {
- struct stat Buf;
- if (stat(string(Dir + File).c_str(),&Buf) != 0)
- {
- File = ChopDirs(File,1);
- Depth++;
- if (File.empty() == false)
- continue;
- return false;
- }
- else
- {
- Chop = Depth;
- return true;
- }
- }
- return false;
-}
- /*}}}*/
-// IndexCopy::ConvertToSourceList - Convert a Path to a sourcelist /*{{{*/
-// ---------------------------------------------------------------------
-/* We look for things in dists/ notation and convert them to
- <dist> <component> form otherwise it is left alone. This also strips
- the CD path.
-
- This implements a regex sort of like:
- (.*)/dists/([^/]*)/(.*)/binary-*
- ^ ^ ^- Component
- | |-------- Distribution
- |------------------- Path
-
- It was deciced to use only a single word for dist (rather than say
- unstable/non-us) to increase the chance that each CD gets a single
- line in sources.list.
- */
-void IndexCopy::ConvertToSourceList(string CD,string &Path)
-{
- char S[300];
- snprintf(S,sizeof(S),"binary-%s",_config->Find("Apt::Architecture").c_str());
-
- // Strip the cdrom base path
- Path = string(Path,CD.length());
- if (Path.empty() == true)
- Path = "/";
-
- // Too short to be a dists/ type
- if (Path.length() < strlen("dists/"))
- return;
-
- // Not a dists type.
- if (stringcmp(Path.c_str(),Path.c_str()+strlen("dists/"),"dists/") != 0)
- return;
-
- // Isolate the dist
- string::size_type Slash = strlen("dists/");
- string::size_type Slash2 = Path.find('/',Slash + 1);
- if (Slash2 == string::npos || Slash2 + 2 >= Path.length())
- return;
- string Dist = string(Path,Slash,Slash2 - Slash);
-
- // Isolate the component
- Slash = Slash2;
- for (unsigned I = 0; I != 10; I++)
- {
- Slash = Path.find('/',Slash+1);
- if (Slash == string::npos || Slash + 2 >= Path.length())
- return;
- string Comp = string(Path,Slash2+1,Slash - Slash2-1);
-
- // Verify the trailing binary- bit
- string::size_type BinSlash = Path.find('/',Slash + 1);
- if (Slash == string::npos)
- return;
- string Binary = string(Path,Slash+1,BinSlash - Slash-1);
-
- if (Binary != S && Binary != "source")
- continue;
-
- Path = Dist + ' ' + Comp;
- return;
- }
-}
- /*}}}*/
-// IndexCopy::GrabFirst - Return the first Depth path components /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool IndexCopy::GrabFirst(string Path,string &To,unsigned int Depth)
-{
- string::size_type I = 0;
- do
- {
- I = Path.find('/',I+1);
- Depth--;
- }
- while (I != string::npos && Depth != 0);
-
- if (I == string::npos)
- return false;
-
- To = string(Path,0,I+1);
- return true;
-}
- /*}}}*/
-// PackageCopy::GetFile - Get the file information from the section /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool PackageCopy::GetFile(string &File,unsigned long &Size)
-{
- File = Section->FindS("Filename");
- Size = Section->FindI("Size");
- if (File.empty() || Size == 0)
- return _error->Error("Cannot find filename or size tag");
- return true;
-}
- /*}}}*/
-// PackageCopy::RewriteEntry - Rewrite the entry with a new filename /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool PackageCopy::RewriteEntry(FILE *Target,string File)
-{
- TFRewriteData Changes[] = {{"Filename",File.c_str()},
- {}};
-
- if (TFRewrite(Target,*Section,TFRewritePackageOrder,Changes) == false)
- return false;
- fputc('\n',Target);
- return true;
-}
- /*}}}*/
-// SourceCopy::GetFile - Get the file information from the section /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool SourceCopy::GetFile(string &File,unsigned long &Size)
-{
- string Files = Section->FindS("Files");
- if (Files.empty() == true)
- return false;
-
- // Stash the / terminated directory prefix
- string Base = Section->FindS("Directory");
- if (Base.empty() == false && Base[Base.length()-1] != '/')
- Base += '/';
-
- // Read the first file triplet
- const char *C = Files.c_str();
- string sSize;
- string MD5Hash;
-
- // Parse each of the elements
- if (ParseQuoteWord(C,MD5Hash) == false ||
- ParseQuoteWord(C,sSize) == false ||
- ParseQuoteWord(C,File) == false)
- return _error->Error("Error parsing file record");
-
- // Parse the size and append the directory
- Size = atoi(sSize.c_str());
- File = Base + File;
- return true;
-}
- /*}}}*/
-// SourceCopy::RewriteEntry - Rewrite the entry with a new filename /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool SourceCopy::RewriteEntry(FILE *Target,string File)
-{
- string Dir(File,0,File.rfind('/'));
- TFRewriteData Changes[] = {{"Directory",Dir.c_str()},
- {}};
-
- if (TFRewrite(Target,*Section,TFRewriteSourceOrder,Changes) == false)
- return false;
- fputc('\n',Target);
- return true;
-}
- /*}}}*/
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