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本帖最后由 lszjyj 于 2012-11-6 14:06 编辑
- #include <stdio.h>
- #include <stdlib.h>
- #include <time.h>
- #include <string.h>
- #include <pppd/pppd.h>
- #include <pppd/md5.h>
- typedef unsigned char byte;
- char pppd_version[] = VERSION;
- static char saveuser[MAXNAMELEN] = {0};
- static char savepwd[MAXSECRETLEN] = {0};
- static void getPIN(byte *userName, byte *PIN)
- {
- int i,j;//循环变量
- long timedivbyfive;//时间除以五
- time_t timenow;//当前时间,从time()获得
- byte RADIUS[16];//凑位字符
- byte timeByte[4];//时间 div 5
- byte beforeMD5[32];//时间 div 5+用户名+凑位
- MD5_CTX md5;//MD5结构体
- byte afterMD5[16];//MD5输出
- byte MD501H[2]; //MD5前两位
- byte MD501[3];
- byte timeHash[4]; //时间div5经过第一次转后后的值
- byte temp[32]; //第一次转换时所用的临时数组
- byte PIN27[6]; //PIN的2到7位,由系统时间转换
- //code
- info("sxplugin : using zjxinlisx01");
- strcpy(RADIUS, "zjxinlisx01");
- timenow = time(NULL);
- timedivbyfive = timenow / 5;
- for(i = 0; i < 4; i++) {
- timeByte[i] = (byte)(timedivbyfive >> (8 * (3 - i)) & 0xFF);
- }
- for(i = 0; i < 4; i++) {
- beforeMD5[i]= timeByte[i];
- }
- for(i = 4; i < 16 && userName[i-4]!='@' ; i++) {
- beforeMD5[i] = userName[i-4];
- }
- j=0;
- while(RADIUS[j]!='\0')
- beforeMD5[i++] = RADIUS[j++];
- MD5_Init(&md5);
- MD5_Update (&md5, beforeMD5, i);
- printf("%d %s\n",i,beforeMD5);
- MD5_Final (afterMD5, &md5);
- MD501H[0] = afterMD5[0] >> 4 & 0xF;
- MD501H[1] = afterMD5[0] & 0xF;
- sprintf(MD501,"%x%x",MD501H[0],MD501H[1]);
- for(i = 0; i < 32; i++) {
- temp[i] = timeByte[(31 - i) / 8] & 1;
- timeByte[(31 - i) / 8] = timeByte[(31 - i) / 8] >> 1;
- }
- for (i = 0; i < 4; i++) {
- timeHash[i] = temp[i] * 128 + temp[4 + i] * 64 + temp[8 + i]
- * 32 + temp[12 + i] * 16 + temp[16 + i] * 8 + temp[20 + i]
- * 4 + temp[24 + i] * 2 + temp[28 + i];
- }
- temp[1] = (timeHash[0] & 3) << 4;
- temp[0] = (timeHash[0] >> 2) & 0x3F;
- temp[2] = (timeHash[1] & 0xF) << 2;
- temp[1] = (timeHash[1] >> 4 & 0xF) + temp[1];
- temp[3] = timeHash[2] & 0x3F;
- temp[2] = ((timeHash[2] >> 6) & 0x3) + temp[2];
- temp[5] = (timeHash[3] & 3) << 4;
- temp[4] = (timeHash[3] >> 2) & 0x3F;
- for (i = 0; i < 6; i++) {
- PIN27[i] = temp[i] + 0x020;
- if(PIN27[i]>=0x40) {
- PIN27[i]++;
- }
- }
- PIN[0] = '\r';
- PIN[1] = '\n';
- memcpy(PIN+2, PIN27, 6);
- PIN[8] = MD501[0];
- PIN[9] = MD501[1];
- strcpy(PIN+10, userName);
- }
- static int pap_modifyusername(char *user, char* passwd)
- {
- byte PIN[MAXSECRETLEN] = {0};
- getPIN(saveuser, PIN);
- strcpy(user, PIN);
- info("sxplugin : user is %s ",user);
- }
- static int check(){
- return 1;
- }
- void plugin_init(void)
- {
- info("sxplugin : init");
- strcpy(saveuser,user);
- strcpy(savepwd,passwd);
- pap_modifyusername(user, saveuser);
- info("sxplugin : passwd loaded");
- pap_check_hook=check;
- chap_check_hook=check;
- }
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