WIP local deb install

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

diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index 8e3b84499c15366f1c24f89becd9873b97332c38..00f6ad0f98ae9978679cb27a7e6a70c8cb97db4f 100644 (file)
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -15,15 +15,26 @@
    ##################################################################### */
                                                                        /*}}}*/
 // 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 <apt-pkg/macros.h>
+
+#include <ctype.h>
+#include <regex.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <algorithm>
+#include <string>

 #include <vector>
 #include <fstream>
 #include <vector>
 #include <fstream>

-#include <iostream>
+
+#include <apti18n.h>

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


@@ -39,8 +50,7 @@ Configuration::Configuration() : ToFree(true)
 }
 Configuration::Configuration(const Item *Root) : Root((Item *)Root), ToFree(false)
 {
 }
 Configuration::Configuration(const Item *Root) : Root((Item *)Root), ToFree(false)
 {

-};
-
+}

                                                                        /*}}}*/
 // Configuration::~Configuration - Destructor                          /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // Configuration::~Configuration - Destructor                          /*{{{*/
 // ---------------------------------------------------------------------


@@ -79,7 +89,7 @@ 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;


@@ -112,7 +122,7 @@ 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;


@@ -168,42 +178,60 @@ 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;
+
+        // ../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;
+        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                      /*{{{*/


@@ -213,19 +241,30 @@ 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;
 }
                                                                        /*}}}*/
 // Configuration::FindVector - Find a vector of values                 /*{{{*/
 // ---------------------------------------------------------------------
 /* Returns a vector of config values under the given item */
    return Res;
 }
                                                                        /*}}}*/
 // Configuration::FindVector - Find a vector of values                 /*{{{*/
 // ---------------------------------------------------------------------
 /* Returns a vector of config values under the given item */

-vector<string> Configuration::FindVector(const char *Name) const
+#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR < 13)
+vector<string> Configuration::FindVector(const char *Name) const { return FindVector(Name, ""); }
+#endif
+vector<string> Configuration::FindVector(const char *Name, std::string const &Default) const

 {
    vector<string> Vec;
    const Item *Top = Lookup(Name);
    if (Top == NULL)
 {
    vector<string> Vec;
    const Item *Top = Lookup(Name);
    if (Top == NULL)

-      return Vec;
+      return VectorizeString(Default, ',');
+
+   if (Top->Value.empty() == false)
+      return VectorizeString(Top->Value, ',');

 
    Item *I = Top->Child;
    while(I != NULL)
 
    Item *I = Top->Child;
    while(I != NULL)


@@ -233,13 +272,16 @@ vector<string> Configuration::FindVector(const char *Name) const
       Vec.push_back(I->Value);
       I = I->Next;
    }
       Vec.push_back(I->Value);
       I = I->Next;
    }

+   if (Vec.empty() == true)
+      return VectorizeString(Default, ',');
+

    return Vec;
 }
                                                                        /*}}}*/
 // Configuration::FindI - Find an integer value                                /*{{{*/
 // ---------------------------------------------------------------------
 /* */
    return Vec;
 }
                                                                        /*}}}*/
 // 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)


@@ -256,7 +298,7 @@ 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)


@@ -318,6 +360,19 @@ 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                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -332,7 +387,7 @@ 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)


@@ -345,7 +400,7 @@ 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);


@@ -355,7 +410,7 @@ 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)


@@ -381,12 +436,24 @@ 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) 


@@ -460,24 +527,80 @@ 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);

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


@@ -501,8 +624,8 @@ 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); 


@@ -659,9 +782,9 @@ 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 += ' ';


@@ -716,7 +839,7 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
            // Go down a level
            if (TermChar == '{')
            {
            // Go down a level
            if (TermChar == '{')
            {

-              if (StackPos <= 100)
+              if (StackPos < sizeof(Stack)/sizeof(std::string))

                  Stack[StackPos++] = ParentTag;
               
               /* Make sectional tags incorperate the section into the
                  Stack[StackPos++] = ParentTag;
               
               /* Make sectional tags incorperate the section into the


@@ -773,6 +896,8 @@ 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


@@ -830,14 +955,66 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
 // ---------------------------------------------------------------------
 /* */
 bool ReadConfigDir(Configuration &Conf,const string &Dir,
 // ---------------------------------------------------------------------
 /* */
 bool ReadConfigDir(Configuration &Conf,const string &Dir,

-                  bool AsSectional, unsigned Depth)
+                  bool const &AsSectional, unsigned const &Depth)

 {
    vector<string> const List = GetListOfFilesInDir(Dir, "conf", true, true);
 
    // Read the files
 {
    vector<string> const List = GetListOfFilesInDir(Dir, "conf", true, true);
 
    // 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;
+}
+                                                                       /*}}}*/