cppcheck complains about some possible speed improvements which could be

[apt.git] / apt-pkg / indexcopy.cc

diff --git a/apt-pkg/indexcopy.cc b/apt-pkg/indexcopy.cc
index f88d51fc54d31efcdb380763fc9386bfe9e1b83a..b262e21c4615d3497010f7254e99a721951fe6c5 100644 (file)
--- a/apt-pkg/indexcopy.cc
+++ b/apt-pkg/indexcopy.cc
@@ -43,7 +43,7 @@ bool IndexCopy::CopyPackages(string CDROM,string Name,vector<string> &List,
                             pkgCdromStatus *log)
 {
    OpProgress *Progress = NULL;
-   if (List.size() == 0)
+   if (List.empty() == true)
       return true;
    
    if(log) 
@@ -54,7 +54,7 @@ bool IndexCopy::CopyPackages(string CDROM,string Name,vector<string> &List,
    
    // Prepare the progress indicator
    unsigned long TotalSize = 0;
-   for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
+   for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
    {
       struct stat Buf;
       if (stat(string(*I + GetFileName()).c_str(),&Buf) != 0 &&
@@ -68,14 +68,14 @@ bool IndexCopy::CopyPackages(string CDROM,string Name,vector<string> &List,
    unsigned int NotFound = 0;
    unsigned int WrongSize = 0;
    unsigned int Packages = 0;
-   for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
+   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)
+      if (RealFileExists(*I + GetFileName()) == true)
       {
         Pkg.Open(*I + GetFileName(),FileFd::ReadOnly);
         FileSize = Pkg.Size();
@@ -532,7 +532,7 @@ bool SigVerify::Verify(string prefix, string file, indexRecords *MetaIndex)
    // we skip non-existing files in the verifcation to support a cdrom
    // with no Packages file (just a Package.gz), see LP: #255545
    // (non-existing files are not considered a error)
-   if(!FileExists(prefix+file))
+   if(!RealFileExists(prefix+file))
    {
       _error->Warning(_("Skipping nonexistent file %s"), string(prefix+file).c_str());
       return true;
@@ -583,13 +583,13 @@ bool SigVerify::CopyMetaIndex(string CDROM, string CDName,                /*{{{*/
 bool SigVerify::CopyAndVerify(string CDROM,string Name,vector<string> &SigList,        /*{{{*/
                              vector<string> PkgList,vector<string> SrcList)
 {
-   if (SigList.size() == 0)
+   if (SigList.empty() == true)
       return true;
 
    bool Debug = _config->FindB("Debug::aptcdrom",false);
 
    // Read all Release files
-   for (vector<string>::iterator I = SigList.begin(); I != SigList.end(); I++)
+   for (vector<string>::iterator I = SigList.begin(); I != SigList.end(); ++I)
    { 
       if(Debug)
         cout << "Signature verify for: " << *I << endl;
@@ -601,7 +601,7 @@ bool SigVerify::CopyAndVerify(string CDROM,string Name,vector<string> &SigList,
       string const release = *I+"Release";
 
       // a Release.gpg without a Release should never happen
-      if(FileExists(release) == false)
+      if(RealFileExists(release) == false)
       {
         delete MetaIndex;
         continue;
@@ -633,7 +633,7 @@ bool SigVerify::CopyAndVerify(string CDROM,string Name,vector<string> &SigList,
       // go over the Indexfiles and see if they verify
       // if so, remove them from our copy of the lists
       vector<string> keys = MetaIndex->MetaKeys();
-      for (vector<string>::iterator I = keys.begin(); I != keys.end(); I++)
+      for (vector<string>::iterator I = keys.begin(); I != keys.end(); ++I)
       { 
         if(!Verify(prefix,*I, MetaIndex)) {
            // something went wrong, don't copy the Release.gpg
@@ -664,6 +664,21 @@ bool SigVerify::CopyAndVerify(string CDROM,string Name,vector<string> &SigList,
 bool SigVerify::RunGPGV(std::string const &File, std::string const &FileGPG,
                        int const &statusfd, int fd[2])
 {
+   if (File == FileGPG)
+   {
+      #define SIGMSG "-----BEGIN PGP SIGNED MESSAGE-----\n"
+      char buffer[sizeof(SIGMSG)];
+      FILE* gpg = fopen(File.c_str(), "r");
+      if (gpg == NULL)
+        return _error->Errno("RunGPGV", _("Could not open file %s"), File.c_str());
+      char const * const test = fgets(buffer, sizeof(buffer), gpg);
+      fclose(gpg);
+      if (test == NULL || strcmp(buffer, SIGMSG) != 0)
+        return _error->Error(_("File %s doesn't start with a clearsigned message"), File.c_str());
+      #undef SIGMSG
+   }
+
+
    string const gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv");
    // FIXME: remove support for deprecated APT::GPGV setting
    string const trustedFile = _config->Find("APT::GPGV::TrustedKeyring", _config->FindFile("Dir::Etc::Trusted"));
@@ -681,14 +696,18 @@ bool SigVerify::RunGPGV(std::string const &File, std::string const &FileGPG,
    std::vector<string> keyrings;
    if (DirectoryExists(trustedPath))
      keyrings = GetListOfFilesInDir(trustedPath, "gpg", false, true);
-   if (FileExists(trustedFile) == true)
+   if (RealFileExists(trustedFile) == true)
      keyrings.push_back(trustedFile);
 
    std::vector<const char *> Args;
    Args.reserve(30);
 
    if (keyrings.empty() == true)
-      return false;
+   {
+      // TRANSLATOR: %s is the trusted keyring parts directory
+      return _error->Error(_("No keyring installed in %s."),
+                          _config->FindDir("Dir::Etc::TrustedParts").c_str());
+   }
 
    Args.push_back(gpgvpath.c_str());
    Args.push_back("--ignore-time-conflict");
@@ -722,7 +741,8 @@ bool SigVerify::RunGPGV(std::string const &File, std::string const &FileGPG,
    }
 
    Args.push_back(FileGPG.c_str());
-   Args.push_back(File.c_str());
+   if (FileGPG != File)
+      Args.push_back(File.c_str());
    Args.push_back(NULL);
 
    if (Debug == true)
@@ -756,7 +776,7 @@ bool TranslationsCopy::CopyTranslations(string CDROM,string Name,   /*{{{*/
                                vector<string> &List, pkgCdromStatus *log)
 {
    OpProgress *Progress = NULL;
-   if (List.size() == 0)
+   if (List.empty() == true)
       return true;
    
    if(log) 
@@ -766,7 +786,7 @@ bool TranslationsCopy::CopyTranslations(string CDROM,string Name,   /*{{{*/
    
    // Prepare the progress indicator
    unsigned long TotalSize = 0;
-   for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
+   for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
    {
       struct stat Buf;
       if (stat(string(*I).c_str(),&Buf) != 0 &&
@@ -780,14 +800,14 @@ bool TranslationsCopy::CopyTranslations(string CDROM,string Name, /*{{{*/
    unsigned int NotFound = 0;
    unsigned int WrongSize = 0;
    unsigned int Packages = 0;
-   for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
+   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) == true)
+      if (RealFileExists(*I) == true)
       {
         Pkg.Open(*I,FileFd::ReadOnly);
         FileSize = Pkg.Size();