X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/224da0778ff385ccbbc7f4abfbd2a6ddcbd9dbfc..f40fdaa43271edf98b80c08e20f401b5da591501:/apt-pkg/versionmatch.cc

diff --git a/apt-pkg/versionmatch.cc b/apt-pkg/versionmatch.cc
index e5f0fafd2..2376ca8fd 100644
--- a/apt-pkg/versionmatch.cc
+++ b/apt-pkg/versionmatch.cc
@@ -11,15 +11,26 @@
    ##################################################################### */
 									/*}}}*/
 // Include Files							/*{{{*/
-#include <apt-pkg/versionmatch.h>
+#include<config.h>
 
+#include <apt-pkg/versionmatch.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>
 
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <string>
 #include <stdio.h>
 #include <ctype.h>
+#include <fnmatch.h>
+#include <regex.h>
 									/*}}}*/
 
+using std::string;
+
 // VersionMatch::pkgVersionMatch - Constructor				/*{{{*/
 // ---------------------------------------------------------------------
 /* Break up the data string according to the selected type */
@@ -56,7 +67,7 @@ pkgVersionMatch::pkgVersionMatch(string Data,MatchType Type) : Type(Type)
       
       // Are we a simple specification?
       string::const_iterator I = Data.begin();
-      for (; I != Data.end() && *I != '='; I++);
+      for (; I != Data.end() && *I != '='; ++I);
       if (I == Data.end())
       {
 	 // Temporary
@@ -114,7 +125,10 @@ pkgVersionMatch::pkgVersionMatch(string Data,MatchType Type) : Type(Type)
    
    if (Type == Origin)
    {
-      OrSite = Data;
+      if (Data[0] == '"' && Data.length() >= 2 && Data.end()[-1] == '"')
+	 OrSite = Data.substr(1, Data.length() - 2);
+      else
+	 OrSite = Data;
       return;
    }   
 }
@@ -123,7 +137,10 @@ pkgVersionMatch::pkgVersionMatch(string Data,MatchType Type) : Type(Type)
 // ---------------------------------------------------------------------
 /* */
 bool pkgVersionMatch::MatchVer(const char *A,string B,bool Prefix)
-{   
+{
+   if (A == NULL)
+      return false;
+
    const char *Ab = A;
    const char *Ae = Ab + strlen(A);
    
@@ -145,24 +162,71 @@ bool pkgVersionMatch::MatchVer(const char *A,string B,bool Prefix)
 pkgCache::VerIterator pkgVersionMatch::Find(pkgCache::PkgIterator Pkg)
 {
    pkgCache::VerIterator Ver = Pkg.VersionList();
-   for (; Ver.end() == false; Ver++)
+   for (; Ver.end() == false; ++Ver)
    {
-      if (Type == Version)
-      {
-	 if (MatchVer(Ver.VerStr(),VerStr,VerPrefixMatch) == true)
-	    return Ver;
-	 continue;
-      }
-      
-      for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; VF++)
-	 if (FileMatch(VF.File()) == true)
-	    return Ver;
+      if (VersionMatches(Ver))
+	 return Ver;
    }
-      
+
    // This will be Ended by now.
    return Ver;
 }
 									/*}}}*/
+
+// VersionMatch::Find - Locate the best match for the select type	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgVersionMatch::VersionMatches(pkgCache::VerIterator Ver)
+{
+   if (Type == Version)
+   {
+      if (MatchVer(Ver.VerStr(),VerStr,VerPrefixMatch) == true)
+	 return true;
+      if (ExpressionMatches(VerStr, Ver.VerStr()) == true)
+	 return true;
+      return false;
+   }
+
+   for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; ++VF)
+      if (FileMatch(VF.File()) == true)
+	 return true;
+
+   return false;
+}
+									/*}}}*/
+
+#ifndef FNM_CASEFOLD
+#define FNM_CASEFOLD 0
+#endif
+
+bool pkgVersionMatch::ExpressionMatches(const char *pattern, const char *string)/*{{{*/
+{
+   if (pattern == NULL || string == NULL)
+      return false;
+   if (pattern[0] == '/') {
+      size_t length = strlen(pattern);
+      if (pattern[length - 1] == '/') {
+	 bool res = false;
+	 regex_t preg;
+	 char *regex = strdup(pattern + 1);
+	 regex[length - 2] = '\0';
+	 if (regcomp(&preg, regex, REG_EXTENDED | REG_ICASE) != 0) {
+	    _error->Warning("Invalid regular expression: %s", regex);
+	 } else if (regexec(&preg, string, 0, NULL, 0) == 0) {
+	    res = true;
+	 }
+	 free(regex);
+	 regfree(&preg);
+	 return res;
+      }
+   }
+   return fnmatch(pattern, string, FNM_CASEFOLD) == 0;
+}
+bool pkgVersionMatch::ExpressionMatches(const std::string& pattern, const char *string)
+{
+    return ExpressionMatches(pattern.c_str(), string);
+}
+									/*}}}*/
 // VersionMatch::FileMatch - Match against an index file		/*{{{*/
 // ---------------------------------------------------------------------
 /* This matcher checks against the release file and the origin location 
@@ -184,38 +248,30 @@ bool pkgVersionMatch::FileMatch(pkgCache::PkgFileIterator File)
 	 return false;
 
       if (RelVerStr.empty() == false)
-	 if (File->Version == 0 ||
-	     MatchVer(File.Version(),RelVerStr,RelVerPrefixMatch) == false)
+	 if (MatchVer(File.Version(),RelVerStr,RelVerPrefixMatch) == false &&
+	       ExpressionMatches(RelVerStr, File.Version()) == false)
 	    return false;
       if (RelOrigin.empty() == false)
-	 if (File->Origin == 0 ||
-	     stringcasecmp(RelOrigin,File.Origin()) != 0)
+	 if (!ExpressionMatches(RelOrigin,File.Origin()))
 	    return false;
       if (RelArchive.empty() == false)
-	 if (File->Archive == 0 ||
-	     stringcasecmp(RelArchive,File.Archive()) != 0)
+	 if (!ExpressionMatches(RelArchive,File.Archive()))
             return false;
       if (RelCodename.empty() == false)
-	 if (File->Codename == 0 ||
-	     stringcasecmp(RelCodename,File.Codename()) != 0)
+	 if (!ExpressionMatches(RelCodename,File.Codename()))
             return false;
       if (RelRelease.empty() == false)
-	 if ((File->Archive == 0 ||
-	     stringcasecmp(RelRelease,File.Archive()) != 0) &&
-             (File->Codename == 0 ||
-	      stringcasecmp(RelRelease,File.Codename()) != 0))
+	 if (!ExpressionMatches(RelRelease,File.Archive()) &&
+             !ExpressionMatches(RelRelease,File.Codename()))
 	       return false;
       if (RelLabel.empty() == false)
-	 if (File->Label == 0 ||
-	     stringcasecmp(RelLabel,File.Label()) != 0)
+	 if (!ExpressionMatches(RelLabel,File.Label()))
 	    return false;
       if (RelComponent.empty() == false)
-	 if (File->Component == 0 ||
-	     stringcasecmp(RelComponent,File.Component()) != 0)
+	 if (!ExpressionMatches(RelComponent,File.Component()))
 	    return false;
       if (RelArchitecture.empty() == false)
-	 if (File->Architecture == 0 ||
-	     stringcasecmp(RelArchitecture,File.Architecture()) != 0)
+	 if (!ExpressionMatches(RelArchitecture,File.Architecture()))
 	    return false;
       return true;
    }
@@ -223,12 +279,12 @@ bool pkgVersionMatch::FileMatch(pkgCache::PkgFileIterator File)
    if (Type == Origin)
    {
       if (OrSite.empty() == false) {
-	 if (File->Site == 0 || OrSite != File.Site())
-	    return false;
-      } else // so we are talking about file:// or status file
-	 if (strcmp(File.Site(),"") == 0 && File->Archive != 0) // skip the status file
+	 if (File.Site() == NULL)
 	    return false;
-      return (OrSite == File.Site());		/* both strings match */
+      }
+      else if (File->Release == 0)// only 'bad' files like dpkg.status file has no release file
+	 return false;
+      return (ExpressionMatches(OrSite, File.Site())); /* both strings match */
    }
 
    return false;