Guy Resheff
92df7a383a
Unmodified upstream source from https://github.com/Raizo62/vwifi Commit: 4a9842e "CMakeLists.txt : VERSION = 7.0" Simulator of WiFi (802.11) interfaces to communicate between several Virtual Machines via mac80211_hwsim + TCP relay. License: Apache-2.0
72 lines
1.1 KiB
C++
72 lines
1.1 KiB
C++
#include <cstddef> // NULL
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#include <arpa/inet.h> // struct sockaddr_in & inet_ntoa & ntohs
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#include "tools.h"
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#include <assert.h> // assert
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bool HashUsesPort=false;
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unsigned long hash_ipaddr(struct sockaddr_in* addr)
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{
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unsigned long res;
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assert( addr != NULL );
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res = (((addr->sin_addr.s_addr >> 24) & 0xff) * 256) +
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(((addr->sin_addr.s_addr >> 16) & 0xff) * 256) +
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(((addr->sin_addr.s_addr >> 8) & 0xff)* 256) +
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(addr->sin_addr.s_addr & 0xff);
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if( HashUsesPort )
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res += addr->sin_port;
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return res;
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}
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bool isInt(const char *str) {
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if( *str == '-' || *str == '+' )
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str++;
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while (*str) {
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if( *str < '0' || *str > '9' )
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return false;
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str++;
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}
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return true;
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}
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bool isPositiveInt(const char *str)
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{
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if( *str == '-' )
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return false;
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return isInt(str);
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}
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bool isIntOrFloat(const char *str) {
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bool seeDot=false;
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bool seeDigit=false;
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if (*str == '-' || *str == '+')
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str++;
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while (*str) {
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if( *str == '.' )
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{
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if( seeDot )
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return false;
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seeDot=true;
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}
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else
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{
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if( *str < '0' || *str > '9' )
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return false;
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seeDigit=true;
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}
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str++;
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}
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return seeDigit;
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}
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