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<hr><p align="left"><small>发信人: cpu (奔腾的心), 信区: Solaris <br>
标 题: SOCKS原码: IP FILTER模块ipauth.c <br>
发信站: 华南网木棉站 (Tue Jul 7 11:36:52 1998), 转信 <br>
<br>
/************************************************************************/ <br>
/* ipauth.c, by digger */ <br>
/* ip.auth is the file that include all IPs that authorized to access */ <br>
/* some services of localhost, the format is just like: */ <br>
/************************************************************************/ <br>
/* # this is one comments line begin with "#" */ <br>
/* 172.18.86.146 */ <br>
/* 172.18.86.145 */ <br>
/* ... */ <br>
/************************************************************************/ <br>
/* function InitAuthIP read the authorized IP into memory array, and */ <br>
/* function IPIsAuthed check if the given IP is authorized */ <br>
/************************************************************************/ <br>
<br>
# include <stdio.h> <br>
# include <sys/types.h> <br>
# include <string.h> <br>
# include <sys/socket.h> <br>
# include <netinet/in.h> <br>
# include <arpa/inet.h> <br>
<br>
# define MAXHOSTS 32 <br>
# define TRUE 0 <br>
# define FALSE -1 <br>
<br>
u_long AuthedIP[MAXHOSTS]; /* authorized IPs */ <br>
int AuthedIPNum; /* number of authorized IPs */ <br>
<br>
int InitAuthIP( ) /* read IP from file ip.auth into memory array */ <br>
{ <br>
FILE *fp; <br>
char sBuf[64]; <br>
char *tmp; <br>
char *s; <br>
u_long IP; <br>
<br>
if ((fp = fopen("ip.auth","r")) == NULL) { <br>
return FALSE; <br>
} <br>
AuthedIPNum = 0; <br>
while (AuthedIPNum < MAXHOSTS && !feof(fp) && fgets(sBuf, 64, fp)) { <br>
tmp = sBuf; <br>
s = strtok(tmp, " \t\r\n"); <br>
if (s == NULL) continue; /* ignore empty line */ <br>
if (s[0] == '#') continue; /* ignore commits line */ <br>
if ((IP = inet_addr(s)) != -1) { <br>
AuthedIP[AuthedIPNum ++] = IP; <br>
} <br>
} <br>
if (AuthedIPNum == 0) { /* default Authorized IP */ <br>
AuthedIP[0] = inet_addr("127.0.0.1"); <br>
AuthedIPNum ++ ; <br>
} <br>
fclose(fp); <br>
return TRUE; <br>
} <br>
<br>
int IPIsAuthed(u_long IP) <br>
{ <br>
int i; <br>
for (i = 0;i < AuthedIPNum && AuthedIP[i] != IP;i ++); <br>
if (i == AuthedIPNum) return FALSE; <br>
<br>
else return TRUE; <br>
} <br>
<br>
-- <br>
<br>
****************************************************** <br>
<br>
青岛啤酒，可能是世界上最好的啤酒 。。。 。。。 <br>
<br>
****************************************************** <br>
<br>
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