work on requests with the correct upgrade/dist-upgrade/else resolver

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

diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index 7eb986ac0f4bc5a0a33e321a71c8f46e33ce9fe3..2e2bb5ebcdfdfb985c427d2f16d403730b9f67aa 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++)
    {
    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];
       {
         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 || 
    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);
       {
         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)
 // ---------------------------------------------------------------------
 /* 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;
 {
    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];
       {
         char Tmp[3];
         Tmp[0] = I[1];


@@ -332,13 +340,13 @@ string SizeToStr(double Size)
    {
       if (ASize < 100 && I != 0)
       {
    {
       if (ASize < 100 && I != 0)
       {

-         sprintf(S,"%'.1f%c",ASize,Ext[I]);
+         sprintf(S,"%'.1f %c",ASize,Ext[I]);

         break;
       }
       
       if (ASize < 10000)
       {
         break;
       }
       
       if (ASize < 10000)
       {

-         sprintf(S,"%'.0f%c",ASize,Ext[I]);
+         sprintf(S,"%'.0f %c",ASize,Ext[I]);

         break;
       }
       ASize /= 1000.0;
         break;
       }
       ASize /= 1000.0;


@@ -819,34 +827,70 @@ static int MonthConv(char *Month)
    }   
 }
                                                                        /*}}}*/
    }   
 }
                                                                        /*}}}*/

-// timegm - Internal timegm function if gnu is not available           /*{{{*/
+// timegm - Internal timegm if the gnu version is not available                /*{{{*/

 // ---------------------------------------------------------------------
 // ---------------------------------------------------------------------

-/* Ripped this evil little function from wget - I prefer the use of 
-   GNU timegm if possible as this technique will have interesting problems
-   with leap seconds, timezones and other.
-   
-   Converts struct tm to time_t, assuming the data in tm is UTC rather
+/* Converts struct tm to time_t, assuming the data in tm is UTC rather

    than local timezone (mktime assumes the latter).
    than local timezone (mktime assumes the latter).

-   
-   Contributed by Roger Beeman <beeman@cisco.com>, with the help of
-   Mark Baushke <mdb@cisco.com> and the rest of the Gurus at CISCO. */

 
 

-/* Turned it into an autoconf check, because GNU is not the only thing which
-   can provide timegm. -- 2002-09-22, Joel Baker */
-
-#ifndef HAVE_TIMEGM // Now with autoconf!
+   This function is a nonstandard GNU extension that is also present on
+   the BSDs and maybe other systems. For others we follow the advice of
+   the manpage of timegm and use his portable replacement. */
+#ifndef HAVE_TIMEGM

 static time_t timegm(struct tm *t)
 {
 static time_t timegm(struct tm *t)
 {

-   time_t tl, tb;
-   
-   tl = mktime (t);
-   if (tl == -1)
-      return -1;
-   tb = mktime (gmtime (&tl));
-   return (tl <= tb ? (tl + (tl - tb)) : (tl - (tb - tl)));
+   char *tz = getenv("TZ");
+   setenv("TZ", "", 1);
+   tzset();
+   time_t ret = mktime(t);
+   if (tz)
+      setenv("TZ", tz, 1);
+   else
+      unsetenv("TZ");
+   tzset();
+   return ret;

 }
 #endif
                                                                        /*}}}*/
 }
 #endif
                                                                        /*}}}*/

+// FullDateToTime - Converts a HTTP1.1 full date strings into a time_t /*{{{*/
+// ---------------------------------------------------------------------
+/* tries to parses a full date as specified in RFC2616 Section 3.3.1
+   with one exception: All timezones (%Z) are accepted but the protocol
+   says that it MUST be GMT, but this one is equal to UTC which we will
+   encounter from time to time (e.g. in Release files) so we accept all
+   here and just assume it is GMT (or UTC) later on */
+bool RFC1123StrToTime(const char* const str,time_t &time)
+{
+   struct tm Tm;
+   setlocale (LC_ALL,"C");
+   bool const invalid =
+   // Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123
+      (strptime(str, "%a, %d %b %Y %H:%M:%S %Z", &Tm) == NULL &&
+   // Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
+       strptime(str, "%A, %d-%b-%y %H:%M:%S %Z", &Tm) == NULL &&
+   // Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format
+       strptime(str, "%a %b %d %H:%M:%S %Y", &Tm) == NULL);
+   setlocale (LC_ALL,"");
+   if (invalid == true)
+      return false;
+
+   time = timegm(&Tm);
+   return true;
+}
+                                                                       /*}}}*/
+// FTPMDTMStrToTime - Converts a ftp modification date into a time_t   /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool FTPMDTMStrToTime(const char* const str,time_t &time)
+{
+   struct tm Tm;
+   // MDTM includes no whitespaces but recommend and ignored by strptime
+   if (strptime(str, "%Y %m %d %H %M %S", &Tm) == NULL)
+      return false;
+
+   time = timegm(&Tm);
+   return true;
+}
+                                                                       /*}}}*/

 // StrToTime - Converts a string into a time_t                         /*{{{*/
 // ---------------------------------------------------------------------
 /* This handles all 3 populare time formats including RFC 1123, RFC 1036
 // StrToTime - Converts a string into a time_t                         /*{{{*/
 // ---------------------------------------------------------------------
 /* This handles all 3 populare time formats including RFC 1123, RFC 1036


@@ -924,6 +968,23 @@ bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base)
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

+// Base256ToNum - Convert a fixed length binary to a number             /*{{{*/
+// ---------------------------------------------------------------------
+/* This is used in decoding the 256bit encoded fixed length fields in
+   tar files */
+bool Base256ToNum(const char *Str,unsigned long &Res,unsigned int Len)
+{
+   if ((Str[0] & 0x80) == 0)
+      return false;
+   else
+   {
+      Res = Str[0] & 0x7F;
+      for(unsigned int i = 1; i < Len; ++i)
+         Res = (Res<<8) + Str[i];
+      return true;
+   }
+}
+                                                                       /*}}}*/

 // HexDigit - Convert a hex character into an integer                  /*{{{*/
 // ---------------------------------------------------------------------
 /* Helper for Hex2Num */
 // HexDigit - Convert a hex character into an integer                  /*{{{*/
 // ---------------------------------------------------------------------
 /* Helper for Hex2Num */


@@ -1117,7 +1178,7 @@ void strprintf(string &out,const char *format,...)
 char *safe_snprintf(char *Buffer,char *End,const char *Format,...)
 {
    va_list args;
 char *safe_snprintf(char *Buffer,char *End,const char *Format,...)
 {
    va_list args;

-   unsigned long Did;
+   int Did;

 
    va_start(args,Format);
 
 
    va_start(args,Format);
 


@@ -1130,6 +1191,15 @@ char *safe_snprintf(char *Buffer,char *End,const char *Format,...)
    return Buffer + Did;
 }
                                                                        /*}}}*/
    return Buffer + Did;
 }
                                                                        /*}}}*/

+// StripEpoch - Remove the version "epoch" from a version string       /*{{{*/
+// ---------------------------------------------------------------------
+string StripEpoch(const string &VerStr)
+{
+   size_t i = VerStr.find(":");
+   if (i == string::npos)
+      return VerStr;
+   return VerStr.substr(i+1);
+}

 
 // tolower_ascii - tolower() function that ignores the locale          /*{{{*/
 // ---------------------------------------------------------------------
 
 // tolower_ascii - tolower() function that ignores the locale          /*{{{*/
 // ---------------------------------------------------------------------


@@ -1238,9 +1308,10 @@ void URI::CopyFrom(const string &U)
    else
    {
       Host.assign(At+1,SingleSlash);
    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)
       if (SecondColon < At)

-        Password.assign(SecondColon+1,At);
+        Password.assign(DeQuoteString(SecondColon+1,At));

    }   
    
    // Now we parse the RFC 2732 [] hostnames.
    }   
    
    // Now we parse the RFC 2732 [] hostnames.