How to detect port - Printable Version
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+--- Thread: How to detect port (/showthread.php?tid=619539)
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+--- Forum: Scripting Help (https://sampforum.blast.hk/forumdisplay.php?fid=12)
+--- Thread: How to detect port (/showthread.php?tid=619539)
How to detect port - NeXoR - 18.10.2016
Hey guys, I am trying to make an Anti Advert, now this is my code:
PHP код:
IsValidIP(ip[])
{
new num1, num2, num3, num4;
sscanf(ip, "p<.>iiii", num1, num2, num3, num4);
if(num1 > 255 || num2 > 255 || num3 > 255 || num4 > 255) return false;
if(num1 < 0 || num2 < 0 || num3 < 0 || num4 < 0) return false;
return true;
}
Re: How to detect port - SickAttack - 19.10.2016
That's obviously going to fail, it isn't that simple as you could simply put characters in between and it won't detect an "IP". Detecting the port isn't necessary, however.
Here's a function I have, it could probably be improved, but it's just fine how it is (note that it's strict). Regex seems to be a lot slower either way.
PHP код:
// ** INCLUDES
#include <a_samp>
#include <sscanf>
// ** DEFINES
// *** FUNCTIONS
#define strcpy(%0,%1,%2) strcat((%0[0] = '\0', %0), %1, %2)
#define isnull(%1) ((!(%1[0])) || (((%1[0]) == '\1') && (!(%1[1]))))
// ** MAIN
main()
{
print("Loaded \"anti_advert.amx\".");
}
// ** CALLBACKS
public OnGameModeInit()
{
return 1;
}
public OnGameModeExit()
{
return 1;
}
public OnPlayerText(playerid, text[])
{
if(IsAdvertisement(text))
{
SendClientMessage(playerid, 0xFFFFFFFF, "{FF0000}[ERROR]: {FFFFFF}Your message contains an IP Address (strict detection).");
return 0;
}
return 1;
}
// ** FUNCTIONS
stock IsAdvertisement(text[])
{
new message[128], extract[2], element[4][4], count_1, count_2, temp, bool:number_next = false, bool:next_number = false;
strcpy(message, text, sizeof(message));
for(new i = 0, j = strlen(message); i < j; i ++)
{
switch(message[i])
{
case '0'..'9':
{
if(next_number)
{
continue;
}
number_next = false;
strmid(extract, message[i], 0, 1);
strcat(element[count_1], extract);
count_2 ++;
if(count_2 == 3 || message[i + 1] == EOS)
{
strmid(extract, message[i + 1], 0, 1);
if(IsNumeric(extract))
{
element[0][0] = EOS;
element[1][0] = EOS;
element[2][0] = EOS;
element[3][0] = EOS;
count_1 = 0;
count_2 = 0;
next_number = true;
continue;
}
temp = strval(element[count_1]);
if(count_1 == 0)
{
if(temp <= 255)
{
count_1 ++;
count_2 = 0;
}
else
{
element[count_1][0] = EOS;
count_2 = 0;
next_number = true;
}
}
else
{
if(temp <= 255)
{
count_1 ++;
count_2 = 0;
}
else
{
element[0][0] = EOS;
element[1][0] = EOS;
element[2][0] = EOS;
element[3][0] = EOS;
count_1 = 0;
count_2 = 0;
next_number = true;
}
}
}
if(count_1 == 4)
{
return 1;
}
}
default:
{
next_number = false;
if(number_next)
{
continue;
}
if(!isnull(element[count_1]))
{
temp = strval(element[count_1]);
if(count_1 == 0)
{
if(temp <= 255)
{
count_1 ++;
count_2 = 0;
number_next = true;
}
else
{
element[count_1][0] = EOS;
count_2 = 0;
}
}
else
{
if(temp <= 255)
{
count_1 ++;
count_2 = 0;
number_next = true;
}
else
{
element[0][0] = EOS;
element[1][0] = EOS;
element[2][0] = EOS;
element[3][0] = EOS;
count_1 = 0;
count_2 = 0;
}
}
if(count_1 == 4)
{
return 1;
}
}
}
}
}
return 0;
}
stock IsNumeric(const string[])
{
return !sscanf(string, "{d}");
}
PHP код:
// ** INCLUDES
#include <a_samp>
#include <regex>
// ** DEFINES
// *** FUNCTIONS
#define strcpy(%0,%1,%2) strcat((%0[0] = '\0', %0), %1, %2)
// ** MAIN
main()
{
print("Loaded \"anti_advert_regex.amx\".");
}
// ** CALLBACKS
public OnGameModeInit()
{
return 1;
}
public OnGameModeExit()
{
return 1;
}
public OnPlayerText(playerid, text[])
{
if(IsAdvertisement(text))
{
SendClientMessage(playerid, 0xFFFFFFFF, "{FF0000}[ERROR]: {FFFFFF}Your message contains an IP Address (strict detection).");
return 0;
}
return 1;
}
// ** FUNCTIONS
stock IsAdvertisement(text[])
{
new message[128], build, expression[] = "(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.+){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)", start, end;
strcpy(message, text, sizeof(message));
for(new i = 0, j = strlen(message); i < j; i ++)
{
switch(message[i])
{
case '0'..'9':
{
continue;
}
case '.':
{
continue;
}
default:
{
strdel(message, i, i + 1);
strins(message, ".", i);
}
}
}
build = regex_exbuild(expression);
regex_exmatch(message, build);
regex_exsearch(message, build, start, end);
if(start >= 0)
{
return 1;
}
return 0;
}