cherry pick -r 1984..1985 lp:~donkult/apt/sid

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

diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index 8e88209491c7c9714183e23d7a8e344541e90332..b54758632ebec8bc807ea4c9a47f88797a77bb5d 100644 (file)
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -198,7 +198,8 @@ bool ParseQuoteWord(const char *&String,string &Res)
    char *I;
    for (I = Buffer; I < Buffer + sizeof(Buffer) && Start != C; I++)
    {
-      if (*Start == '%' && Start + 2 < C)
+      if (*Start == '%' && Start + 2 < C &&
+         isxdigit(Start[1]) && isxdigit(Start[2]))
       {
         Tmp[0] = Start[1];
         Tmp[1] = Start[2];
@@ -273,7 +274,8 @@ string QuoteString(const string &Str, const char *Bad)
    for (string::const_iterator I = Str.begin(); I != Str.end(); I++)
    {
       if (strchr(Bad,*I) != 0 || isprint(*I) == 0 || 
-         *I <= 0x20 || *I >= 0x7F)
+         *I == 0x25 || // percent '%' char
+         *I <= 0x20 || *I >= 0x7F) // control chars
       {
         char Buf[10];
         sprintf(Buf,"%%%02x",(int)*I);
@@ -289,11 +291,17 @@ string QuoteString(const string &Str, const char *Bad)
 // ---------------------------------------------------------------------
 /* This undoes QuoteString */
 string DeQuoteString(const string &Str)
+{
+   return DeQuoteString(Str.begin(),Str.end());
+}
+string DeQuoteString(string::const_iterator const &begin,
+                       string::const_iterator const &end)
 {
    string Res;
-   for (string::const_iterator I = Str.begin(); I != Str.end(); I++)
+   for (string::const_iterator I = begin; I != end; I++)
    {
-      if (*I == '%' && I + 2 < Str.end())
+      if (*I == '%' && I + 2 < end &&
+         isxdigit(I[1]) && isxdigit(I[2]))
       {
         char Tmp[3];
         Tmp[0] = I[1];
@@ -1217,9 +1225,10 @@ void URI::CopyFrom(const string &U)
    else
    {
       Host.assign(At+1,SingleSlash);
-      User.assign(FirstColon,SecondColon);
+      // username and password must be encoded (RFC 3986)
+      User.assign(DeQuoteString(FirstColon,SecondColon));
       if (SecondColon < At)
-        Password.assign(SecondColon+1,At);
+        Password.assign(DeQuoteString(SecondColon+1,At));
    }   
    
    // Now we parse the RFC 2732 [] hostnames.