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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "socket.h"
#include "log.h"
#include "request.h"
char *tokget(char *buf, int t)
{
int i;
char *p;
p=strtok(buf, " \t");
for(i=0; i<t; i++) {
if(!p) return(NULL);
p=strtok(NULL, " \t");
}
return(p);
}
static int isnumber(char *string)
{
int i,l=strlen(string);
char c;
int x=0;
for(i=0;i<l;i++) {
c=string[i];
if(!(isblank(c)||isdigit(c))) return(0);
if(isblank(c)) if(x==1) x++;
if(isdigit(c)) {
if(!x) x++;
else if(x==2) return(0);
}
}
return(1);
}
int Parse_Request(char *line, int *lport, int *rport)
{
char *tok0=line, *tok1;
int l,r;
tok1=index(line, ',');
if(!tok1) return(-1);
*tok1++=0;
if(!(isnumber(tok0) && isnumber(tok1))) return(-1);
l=atoi(tok0);
r=atoi(tok1);
if(l<=0 || l>65535 || r<=0 || r>65535) return(-1);
*lport=l;
*rport=r;
return(0);
}
int tcp4(void)
{
FILE *fd;
char line[1024];
char buf[34];
char *p;
if(!(fd=fopen("/proc/net/tcp","r"))) {
Log("Unable to open /proc/net/tcp: %s", strerror(errno));
return(-1);
}
snprintf(buf, 34, ": %08X:%04X %08X:%04X 01 ", conn.lh.s6_addr32[3], req.lp, conn.rh.s6_addr32[3], req.rp);
while(fgets(line, 1024, fd)) {
if(strstr(line, buf)) {
if(!(p=tokget(line, 7))) {
Log("something's wrong with /proc/net/tcp");
fclose(fd);
return(-1);
}
fclose(fd);
return(atoi(p));
}
}
fclose(fd);
return(-2);
}
int tcp6(void)
{
FILE *fd;
char line[1024];
char buf[82];
char *p;
if(!(fd=fopen("/proc/net/tcp6", "r"))) {
Log("Unable to open /proc/net/tcp6: %s", strerror(errno));
return(-1);
}
snprintf(buf, 82, ": %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X 01 ",
conn.lh.s6_addr32[0], conn.lh.s6_addr32[1], conn.lh.s6_addr32[2],
conn.lh.s6_addr32[3], req.lp, conn.rh.s6_addr32[0],
conn.rh.s6_addr32[1], conn.rh.s6_addr32[2], conn.rh.s6_addr32[3],
req.rp);
while(fgets(line, 1024, fd)) {
if(strstr(line, buf)) {
if(!(p=tokget(line, 7))) {
Log("something's wrong with /proc/net/tcp6");
fclose(fd);
return(-1);
}
fclose(fd);
return(atoi(p));
}
}
fclose(fd);
return(-2);
}
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