merge patch from Daniel Hartwig to Show a error message if {,dist-}upgrade is used...

[apt.git] / apt-pkg / contrib / configuration.cc

diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index b83ece3e47935d0f1213ea872e8a3bc6c092fcde..31cd9f8adc25efa0a4d6cf9a3bfd2f3a5105ee3b 100644 (file)
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -15,21 +15,18 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include files                                                       /*{{{*/

+#include <config.h>
+

 #include <apt-pkg/configuration.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/fileutl.h>

-#include <apti18n.h>

 
 #include <vector>
 
 #include <vector>

-#include <algorithm>

 #include <fstream>
 #include <iostream>
 #include <fstream>
 #include <iostream>

-    
-#include <stdio.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <unistd.h>
+
+#include <apti18n.h>

 
 using namespace std;
                                                                        /*}}}*/
 
 using namespace std;
                                                                        /*}}}*/


@@ -85,7 +82,7 @@ Configuration::~Configuration()
 /* This will lookup a single item by name below another item. It is a 
    helper function for the main lookup function */
 Configuration::Item *Configuration::Lookup(Item *Head,const char *S,
 /* This will lookup a single item by name below another item. It is a 
    helper function for the main lookup function */
 Configuration::Item *Configuration::Lookup(Item *Head,const char *S,

-                                          unsigned long Len,bool Create)
+                                          unsigned long const &Len,bool const &Create)

 {
    int Res = 1;
    Item *I = Head->Child;
 {
    int Res = 1;
    Item *I = Head->Child;


@@ -118,7 +115,7 @@ Configuration::Item *Configuration::Lookup(Item *Head,const char *S,
 // ---------------------------------------------------------------------
 /* This performs a fully scoped lookup of a given name, possibly creating
    new items */
 // ---------------------------------------------------------------------
 /* This performs a fully scoped lookup of a given name, possibly creating
    new items */

-Configuration::Item *Configuration::Lookup(const char *Name,bool Create)
+Configuration::Item *Configuration::Lookup(const char *Name,bool const &Create)

 {
    if (Name == 0)
       return Root->Child;
 {
    if (Name == 0)
       return Root->Child;


@@ -174,42 +171,60 @@ string Configuration::Find(const char *Name,const char *Default) const
 string Configuration::FindFile(const char *Name,const char *Default) const
 {
    const Item *RootItem = Lookup("RootDir");
 string Configuration::FindFile(const char *Name,const char *Default) const
 {
    const Item *RootItem = Lookup("RootDir");

-   std::string rootDir =  (RootItem == 0) ? "" : RootItem->Value;
-   if(rootDir.size() > 0 && rootDir[rootDir.size() - 1] != '/')
-     rootDir.push_back('/');
+   std::string result =  (RootItem == 0) ? "" : RootItem->Value;
+   if(result.empty() == false && result[result.size() - 1] != '/')
+     result.push_back('/');

 
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)
    {
 
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)
    {

-      if (Default == 0)
-        return rootDir;
-      else
-        return rootDir + Default;
+      if (Default != 0)
+        result.append(Default);

    }
    }

-   
-   string val = Itm->Value;
-   while (Itm->Parent != 0 && Itm->Parent->Value.empty() == false)
-   {    
-      // Absolute
-      if (val.length() >= 1 && val[0] == '/')
-         break;
-
-      // ~/foo or ./foo 
-      if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/')
-        break;
-        
-      // ../foo 
-      if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/')
-        break;
-      
-      if (Itm->Parent->Value.end()[-1] != '/')
-        val.insert(0, "/");
+   else
+   {
+      string val = Itm->Value;
+      while (Itm->Parent != 0)
+      {
+        if (Itm->Parent->Value.empty() == true)
+        {
+           Itm = Itm->Parent;
+           continue;
+        }
+
+        // Absolute
+        if (val.length() >= 1 && val[0] == '/')
+        {
+           if (val.compare(0, 9, "/dev/null") == 0)
+              val.erase(9);
+           break;
+        }
+
+        // ~/foo or ./foo
+        if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/')
+           break;

 
 

-      val.insert(0, Itm->Parent->Value);
-      Itm = Itm->Parent;
+        // ../foo
+        if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/')
+           break;
+
+        if (Itm->Parent->Value.end()[-1] != '/')
+           val.insert(0, "/");
+
+        val.insert(0, Itm->Parent->Value);
+        Itm = Itm->Parent;
+      }
+      result.append(val);

    }
 
    }
 

-   return rootDir + val;
+   // do some normalisation by removing // and /./ from the path
+   size_t found = string::npos;
+   while ((found = result.find("/./")) != string::npos)
+      result.replace(found, 3, "/");
+   while ((found = result.find("//")) != string::npos)
+      result.replace(found, 2, "/");
+
+   return result;

 }
                                                                        /*}}}*/
 // Configuration::FindDir - Find a directory name                      /*{{{*/
 }
                                                                        /*}}}*/
 // Configuration::FindDir - Find a directory name                      /*{{{*/


@@ -219,7 +234,12 @@ string Configuration::FindDir(const char *Name,const char *Default) const
 {
    string Res = FindFile(Name,Default);
    if (Res.end()[-1] != '/')
 {
    string Res = FindFile(Name,Default);
    if (Res.end()[-1] != '/')

+   {
+      size_t const found = Res.rfind("/dev/null");
+      if (found != string::npos && found == Res.size() - 9)
+        return Res; // /dev/null returning

       return Res + '/';
       return Res + '/';

+   }

    return Res;
 }
                                                                        /*}}}*/
    return Res;
 }
                                                                        /*}}}*/


@@ -245,7 +265,7 @@ vector<string> Configuration::FindVector(const char *Name) const
 // Configuration::FindI - Find an integer value                                /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Configuration::FindI - Find an integer value                                /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-int Configuration::FindI(const char *Name,int Default) const
+int Configuration::FindI(const char *Name,int const &Default) const

 {
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)
 {
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)


@@ -262,7 +282,7 @@ int Configuration::FindI(const char *Name,int Default) const
 // Configuration::FindB - Find a boolean type                          /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Configuration::FindB - Find a boolean type                          /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-bool Configuration::FindB(const char *Name,bool Default) const
+bool Configuration::FindB(const char *Name,bool const &Default) const

 {
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)
 {
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)


@@ -324,6 +344,19 @@ void Configuration::CndSet(const char *Name,const string &Value)
       Itm->Value = Value;
 }
                                                                        /*}}}*/
       Itm->Value = Value;
 }
                                                                        /*}}}*/

+// Configuration::Set - Set an integer value                           /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void Configuration::CndSet(const char *Name,int const Value)
+{
+   Item *Itm = Lookup(Name,true);
+   if (Itm == 0 || Itm->Value.empty() == false)
+      return;
+   char S[300];
+   snprintf(S,sizeof(S),"%i",Value);
+   Itm->Value = S;
+}
+                                                                       /*}}}*/

 // Configuration::Set - Set a value                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Configuration::Set - Set a value                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -338,7 +371,7 @@ void Configuration::Set(const char *Name,const string &Value)
 // Configuration::Set - Set an integer value                           /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Configuration::Set - Set an integer value                           /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void Configuration::Set(const char *Name,int Value)
+void Configuration::Set(const char *Name,int const &Value)

 {
    Item *Itm = Lookup(Name,true);
    if (Itm == 0)
 {
    Item *Itm = Lookup(Name,true);
    if (Itm == 0)


@@ -351,7 +384,7 @@ void Configuration::Set(const char *Name,int Value)
 // Configuration::Clear - Clear an single value from a list            /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Configuration::Clear - Clear an single value from a list            /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void Configuration::Clear(const string Name, int Value)
+void Configuration::Clear(string const &Name, int const &Value)

 {
    char S[300];
    snprintf(S,sizeof(S),"%i",Value);
 {
    char S[300];
    snprintf(S,sizeof(S),"%i",Value);


@@ -361,7 +394,7 @@ void Configuration::Clear(const string Name, int Value)
 // Configuration::Clear - Clear an single value from a list            /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Configuration::Clear - Clear an single value from a list            /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void Configuration::Clear(const string Name, string Value)
+void Configuration::Clear(string const &Name, string const &Value)

 {
    Item *Top = Lookup(Name.c_str(),false);
    if (Top == 0 || Top->Child == 0)
 {
    Item *Top = Lookup(Name.c_str(),false);
    if (Top == 0 || Top->Child == 0)


@@ -387,12 +420,24 @@ void Configuration::Clear(const string Name, string Value)
       }
    }
      
       }
    }
      

+}
+                                                                       /*}}}*/
+// Configuration::Clear - Clear everything                             /*{{{*/
+// ---------------------------------------------------------------------
+void Configuration::Clear()
+{
+   const Configuration::Item *Top = Tree(0);
+   while( Top != 0 )
+   {
+      Clear(Top->FullTag());
+      Top = Top->Next;
+   }

 }
                                                                        /*}}}*/
 // Configuration::Clear - Clear an entire tree                         /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 }
                                                                        /*}}}*/
 // Configuration::Clear - Clear an entire tree                         /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void Configuration::Clear(string Name)
+void Configuration::Clear(string const &Name)

 {
    Item *Top = Lookup(Name.c_str(),false);
    if (Top == 0) 
 {
    Item *Top = Lookup(Name.c_str(),false);
    if (Top == 0) 


@@ -466,24 +511,80 @@ bool Configuration::ExistsAny(const char *Name) const
 /* Dump the entire configuration space */
 void Configuration::Dump(ostream& str)
 {
 /* Dump the entire configuration space */
 void Configuration::Dump(ostream& str)
 {

-   /* Write out all of the configuration directives by walking the 
+   Dump(str, NULL, "%f \"%v\";\n", true);
+}
+void Configuration::Dump(ostream& str, char const * const root,
+                        char const * const formatstr, bool const emptyValue)
+{
+   const Configuration::Item* Top = Tree(root);
+   if (Top == 0)
+      return;
+   const Configuration::Item* const Root = (root == NULL) ? NULL : Top;
+   std::vector<std::string> const format = VectorizeString(formatstr, '%');
+
+   /* Write out all of the configuration directives by walking the

       configuration tree */
       configuration tree */

-   const Configuration::Item *Top = Tree(0);
-   for (; Top != 0;)
-   {
-      str << Top->FullTag() << " \"" << Top->Value << "\";" << endl;
-      
+   do {
+      if (emptyValue == true || Top->Value.empty() == emptyValue)
+      {
+        std::vector<std::string>::const_iterator f = format.begin();
+        str << *f;
+        for (++f; f != format.end(); ++f)
+        {
+           if (f->empty() == true)
+           {
+              ++f;
+              str << '%' << *f;
+              continue;
+           }
+           char const type = (*f)[0];
+           if (type == 'f')
+              str << Top->FullTag();
+           else if (type == 't')
+              str << Top->Tag;
+           else if (type == 'v')
+              str << Top->Value;
+           else if (type == 'F')
+              str << QuoteString(Top->FullTag(), "=\"\n");
+           else if (type == 'T')
+              str << QuoteString(Top->Tag, "=\"\n");
+           else if (type == 'V')
+              str << QuoteString(Top->Value, "=\"\n");
+           else if (type == 'n')
+              str << "\n";
+           else if (type == 'N')
+              str << "\t";
+           else
+              str << '%' << type;
+           str << f->c_str() + 1;
+        }
+      }
+

       if (Top->Child != 0)
       {
         Top = Top->Child;
         continue;
       }
       if (Top->Child != 0)
       {
         Top = Top->Child;
         continue;
       }

-      
+

       while (Top != 0 && Top->Next == 0)
         Top = Top->Parent;
       if (Top != 0)
         Top = Top->Next;
       while (Top != 0 && Top->Next == 0)
         Top = Top->Parent;
       if (Top != 0)
         Top = Top->Next;

-   }
+
+      if (Root != NULL)
+      {
+        const Configuration::Item* I = Top;
+        while(I != 0)
+        {
+           if (I == Root)
+              break;
+           else
+              I = I->Parent;
+        }
+        if (I == 0)
+           break;
+      }
+   } while (Top != 0);

 }
                                                                        /*}}}*/
 
 }
                                                                        /*}}}*/
 


@@ -507,8 +608,8 @@ string Configuration::Item::FullTag(const Item *Stop) const
    sections like 'zone "foo.org" { .. };' This causes each section to be
    added in with a tag like "zone::foo.org" instead of being split 
    tag/value. AsSectional enables Sectional parsing.*/
    sections like 'zone "foo.org" { .. };' This causes each section to be
    added in with a tag like "zone::foo.org" instead of being split 
    tag/value. AsSectional enables Sectional parsing.*/

-bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
-                   unsigned Depth)
+bool ReadConfigFile(Configuration &Conf,const string &FName,bool const &AsSectional,
+                   unsigned const &Depth)

 {   
    // Open the stream for reading
    ifstream F(FName.c_str(),ios::in); 
 {   
    // Open the stream for reading
    ifstream F(FName.c_str(),ios::in); 


@@ -601,9 +702,11 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
            InQuote = !InQuote;
         if (InQuote == true)
            continue;
            InQuote = !InQuote;
         if (InQuote == true)
            continue;

-        
-        if ((*I == '/' && I + 1 != End && I[1] == '/') || *I == '#')
-         {
+
+        if ((*I == '/' && I + 1 != End && I[1] == '/') ||
+            (*I == '#' && strcmp(string(I,I+6).c_str(),"#clear") != 0 &&
+             strcmp(string(I,I+8).c_str(),"#include") != 0))
+        {

            End = I;
            break;
         }
            End = I;
            break;
         }


@@ -663,9 +766,9 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
            // Put the last fragment into the buffer
            std::string::const_iterator NonWhitespaceStart = Start;
            std::string::const_iterator NonWhitespaceStop = I;
            // Put the last fragment into the buffer
            std::string::const_iterator NonWhitespaceStart = Start;
            std::string::const_iterator NonWhitespaceStop = I;

-           for (; NonWhitespaceStart != I && isspace(*NonWhitespaceStart) != 0; NonWhitespaceStart++)
+           for (; NonWhitespaceStart != I && isspace(*NonWhitespaceStart) != 0; ++NonWhitespaceStart)

              ;
              ;

-           for (; NonWhitespaceStop != NonWhitespaceStart && isspace(NonWhitespaceStop[-1]) != 0; NonWhitespaceStop--)
+           for (; NonWhitespaceStop != NonWhitespaceStart && isspace(NonWhitespaceStop[-1]) != 0; --NonWhitespaceStop)

              ;
            if (LineBuffer.empty() == false && NonWhitespaceStop - NonWhitespaceStart != 0)
               LineBuffer += ' ';
              ;
            if (LineBuffer.empty() == false && NonWhitespaceStop - NonWhitespaceStart != 0)
               LineBuffer += ' ';


@@ -777,6 +880,8 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
               else
                  return _error->Error(_("Syntax error %s:%u: Unsupported directive '%s'"),FName.c_str(),CurLine,Tag.c_str());
            }
               else
                  return _error->Error(_("Syntax error %s:%u: Unsupported directive '%s'"),FName.c_str(),CurLine,Tag.c_str());
            }

+           else if (Tag.empty() == true && NoWord == false && Word == "#clear")
+              return _error->Error(_("Syntax error %s:%u: clear directive requires an option tree as argument"),FName.c_str(),CurLine);

            else
            {
               // Set the item in the configuration class
            else
            {
               // Set the item in the configuration class


@@ -833,44 +938,67 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
 // ReadConfigDir - Read a directory of config files                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // ReadConfigDir - Read a directory of config files                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-bool ReadConfigDir(Configuration &Conf,const string &Dir,bool AsSectional,
-                  unsigned Depth)
-{   
-   DIR *D = opendir(Dir.c_str());
-   if (D == 0)
-      return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str());
-
-   vector<string> List;
-   
-   for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D))
-   {
-      if (Ent->d_name[0] == '.')
-        continue;
-      
-      // Skip bad file names ala run-parts
-      const char *C = Ent->d_name;
-      for (; *C != 0; C++)
-        if (isalpha(*C) == 0 && isdigit(*C) == 0 && *C != '_' && *C != '-')
-           break;
-      if (*C != 0)
-        continue;
-      
-      // Make sure it is a file and not something else
-      string File = flCombine(Dir,Ent->d_name);
-      struct stat St;
-      if (stat(File.c_str(),&St) != 0 || S_ISREG(St.st_mode) == 0)
-        continue;
-      
-      List.push_back(File);      
-   }   
-   closedir(D);
-   
-   sort(List.begin(),List.end());
+bool ReadConfigDir(Configuration &Conf,const string &Dir,
+                  bool const &AsSectional, unsigned const &Depth)
+{
+   vector<string> const List = GetListOfFilesInDir(Dir, "conf", true, true);

 
    // Read the files
 
    // Read the files

-   for (vector<string>::const_iterator I = List.begin(); I != List.end(); I++)
+   for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)

       if (ReadConfigFile(Conf,*I,AsSectional,Depth) == false)
         return false;
    return true;
 }
                                                                        /*}}}*/
       if (ReadConfigFile(Conf,*I,AsSectional,Depth) == false)
         return false;
    return true;
 }
                                                                        /*}}}*/

+// MatchAgainstConfig Constructor                                      /*{{{*/
+Configuration::MatchAgainstConfig::MatchAgainstConfig(char const * Config)
+{
+   std::vector<std::string> const strings = _config->FindVector(Config);
+   for (std::vector<std::string>::const_iterator s = strings.begin();
+       s != strings.end(); ++s)
+   {
+      regex_t *p = new regex_t;
+      if (regcomp(p, s->c_str(), REG_EXTENDED | REG_ICASE | REG_NOSUB) == 0)
+        patterns.push_back(p);
+      else
+      {
+        regfree(p);
+        delete p;
+        _error->Warning("Invalid regular expression '%s' in configuration "
+                         "option '%s' will be ignored.",
+                         s->c_str(), Config);
+        continue;
+      }
+   }
+   if (strings.empty() == true)
+      patterns.push_back(NULL);
+}
+                                                                       /*}}}*/
+// MatchAgainstConfig Destructor                                       /*{{{*/
+Configuration::MatchAgainstConfig::~MatchAgainstConfig()
+{
+   clearPatterns();
+}
+void Configuration::MatchAgainstConfig::clearPatterns()
+{
+   for(std::vector<regex_t *>::const_iterator p = patterns.begin();
+       p != patterns.end(); ++p)
+   {
+      if (*p == NULL) continue;
+      regfree(*p);
+      delete *p;
+   }
+   patterns.clear();
+}
+                                                                       /*}}}*/
+// MatchAgainstConfig::Match - returns true if a pattern matches       /*{{{*/
+bool Configuration::MatchAgainstConfig::Match(char const * str) const
+{
+   for(std::vector<regex_t *>::const_iterator p = patterns.begin();
+       p != patterns.end(); ++p)
+      if (*p != NULL && regexec(*p, str, 0, 0, 0) == 0)
+        return true;
+
+   return false;
+}
+                                                                       /*}}}*/