X-Git-Url: https://code.wpia.club/?a=blobdiff_plain;f=src%2Futil.cpp;h=55d586405d738cf94343de66361b0f4490e6319b;hb=23987db96db7962a6ee58d1aeda2bd87780ca579;hp=13443af321f7f183cb5c907e744e98740c775bfc;hpb=956e14c8c610af488cdb94ae57ae1b4aa819aa83;p=cassiopeia.git

diff --git a/src/util.cpp b/src/util.cpp
index 13443af..55d5864 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1,19 +1,208 @@
 #include "util.h"
 
+#include <sys/stat.h>
+
 #include <fstream>
+#include <iostream>
+#include <sstream>
+#include <time.h>
+#include <stdexcept>
 
 void writeFile( const std::string& name, const std::string& content ) {
-    std::ofstream file;
-
-    file.open( name );
+    std::ofstream file( name );
     file << content;
-    file.close();
+
+    //! \FIXME: Error checking
 }
 
 std::string readFile( const std::string& name ) {
     std::ifstream t( name );
     std::string res = std::string( std::istreambuf_iterator<char>( t ), std::istreambuf_iterator<char>() );
-    t.close();
 
     return res;
 }
+
+std::string writeBackFile( const std::string& serial, const std::string& cert, const std::string& keydir ) {
+    errno = 0;
+
+    std::string filename = keydir;
+
+    if( 0 != mkdir( filename.c_str(), 0755 ) ) {
+        if( EEXIST != errno ) {
+            throw std::runtime_error( "Storage location could not be determined" );
+        }
+
+        //! \FIXME: Check this is a directory
+    }
+
+    filename += "/crt";
+
+    if( 0 != mkdir( filename.c_str(), 0755 ) ) {
+        if( EEXIST != errno ) {
+            return "";
+        }
+
+        //! \FIXME: Check this is a directory
+    }
+
+    std::string first;
+
+    if( serial.length() < 3 ) {
+        first = "0";
+    } else {
+        first = serial.substr( 0, serial.length() - 3 );
+    }
+
+    filename += "/" + first;
+
+    if( 0 != mkdir( filename.c_str(), 0755 ) ) {
+        if( EEXIST != errno ) {
+            return "";
+        }
+
+        //! \FIXME: Check this is a directory
+    }
+
+    filename += "/" + serial + ".crt";
+    writeFile( filename, cert );
+
+    return filename;
+}
+
+bool isDigit( char c ) {
+    return ( c >= '0' ) && ( c <= '9' );
+}
+
+std::pair<bool, time_t> parseDate( const std::string& date ) {
+    if( date.size() != 10 || date[4] != '-' || date[7] != '-' ) {
+        return std::pair<bool, time_t>( false, 0 );
+    }
+
+    if( !isDigit( date[0] )
+            || !isDigit( date[1] )
+            || !isDigit( date[2] )
+            || !isDigit( date[3] )
+            || !isDigit( date[5] )
+            || !isDigit( date[6] )
+            || !isDigit( date[8] )
+            || !isDigit( date[9] ) ) {
+        return std::pair<bool, time_t>( false, 0 );
+    }
+
+    std::tm t = {};
+    t.tm_sec = 0;
+    t.tm_min = 0;
+    t.tm_hour = 0;
+    t.tm_mday = std::stoi( date.substr( 8, 2 ) );
+    t.tm_mon = std::stoi( date.substr( 5, 2 ) ) - 1;
+    t.tm_year = std::stoi( date.substr( 0, 4 ) ) - 1900;
+
+    setenv( "TZ", "UTC", 1 );
+    tzset();
+    std::time_t res = mktime( &t );
+    char check[11];
+    std::size_t siz = strftime( check, 11, "%Y-%m-%d", &t );
+
+    if( siz != 10 ) {
+        return std::pair<bool, time_t>( false, 0 ); // NO-COVERAGE (by contract of strftime)
+    }
+
+    std::string checkS( check, siz );
+
+    if( checkS != date ) {
+        return { false, 0 };
+    }
+
+    return std::pair<bool, time_t>( true, res );
+}
+
+std::pair<bool, time_t> addMonths( std::time_t t, int32_t count ) {
+    std::tm* parsed = gmtime( &t );
+
+    if( !parsed || count <= 0 || count > 24 ) { // FIXED MAX-Validity-Length
+        return std::pair<bool, time_t>( false, 0 );
+    }
+
+    parsed->tm_mon += count;
+    int oldday = parsed->tm_mday;
+    setenv( "TZ", "UTC", 1 );
+    tzset();
+    std::time_t res = mktime( parsed );
+
+    if( parsed->tm_mday != oldday ) {
+        parsed->tm_mday = 0;
+        res = mktime( parsed );
+    }
+
+    return std::pair<bool, time_t>( true, res );
+}
+
+std::pair<bool, time_t> parseMonthInterval( std::time_t t, const std::string& date ) {
+    if( date[date.size() - 1] != 'm' ) {
+        return  std::pair<bool, time_t>( false, 0 );
+    }
+
+    try {
+        size_t end = 0;
+        int num = std::stoi( date.substr( 0, date.size() - 1 ), &end );
+
+        if( end != date.size() - 1 ) {
+            return  std::pair<bool, time_t>( false, 0 );
+        }
+
+        return addMonths( t, num );
+    } catch( const std::invalid_argument& a ) {
+        return std::pair<bool, time_t>( false, 0 );
+    } catch( const std::out_of_range& a ) {
+        return std::pair<bool, time_t>( false, 0 );
+    }
+}
+
+std::pair<bool, time_t> parseYearInterval( std::time_t t, const std::string& date ) {
+    if( date[date.size() - 1] != 'y' ) {
+        return  std::pair<bool, time_t>( false, 0 );
+    }
+
+    try {
+        size_t end = 0;
+        int num = std::stoi( date.substr( 0, date.size() - 1 ), &end );
+
+        if( end != date.size() - 1 ) {
+            return  std::pair<bool, time_t>( false, 0 );
+        }
+
+        return addMonths( t, num * 12 );
+    } catch( std::invalid_argument& a ) {
+        return std::pair<bool, time_t>( false, 0 );
+    } catch( std::out_of_range& a ) {
+        return std::pair<bool, time_t>( false, 0 );
+    }
+}
+
+std::unique_ptr<std::ofstream> openLogfile( const std::string &name ) {
+    struct stat buffer;
+    std::string tname = name;
+    int ctr = 2;
+
+    while( stat( tname.c_str(), &buffer ) == 0 ) {
+        tname = name + "_" + std::to_string( ctr++ );
+    }
+
+    auto res = std::make_unique<std::ofstream>( tname );
+
+    if( ! res->good() ) {
+        throw std::runtime_error( std::string( "Failed to open file for logging: " ) + name );
+    }
+
+    return res;
+}
+
+std::string timestamp() {
+    time_t c_time;
+
+    if( time( &c_time ) == -1 ) {
+        throw std::runtime_error( "Error while fetching time?" );
+    }
+
+    return std::to_string( c_time );
+}