QQ 协议2005beta2 版协议分析

/*如果解密失败，试试用我们的init_key 能缶解密*/ len2 = len; e = qq_decrypt(&p[7],len,qc->init_key,data_decrypted,&len2);

if(e == 0){ switch(data_decrypted[0]){

case 0x01: printf("redirect to other server.\n"); // 000-000: reply code //printf("server reply code x\n",data[0]); // 001-004: login uid tmp32 = ntohl(*((uint32_t*)&data_decrypted[1])); printf("request id %d\n",tmp32); // 005-008: redirected new server IP tmp32 = *((uint32_t*)&data_decrypted[5]); in.s_addr = tmp32; printf("new server ip %s \n",inet_ntoa(in)); // 009-010: redirected new server port tmp16 = *((uint16_t*)&data_decrypted[9]); printf("new server port %d\n",ntohs(tmp16));

close(qc->server); //bzero(qc,sizeof(struct qq_client)); qc->server = -1;

qc->login_retry++;

if(qc->login_retry>16){ fprintf(stderr,"too many times retried.\n"); return -EFAULT;

}

return qq_login(qc,id,pass,login_mode,local_ip,local_port,inet_ntoa(in),ntohs(tmp16));

break;

case 0x05: printf("id = %s pass = %s password error.\n",id,pass); close(qc->server); qc->server = -1; return -EINVAL; break;

default: printf("unknow server error.\n"); close(qc->server); qc->server = -1; qc->login_retry++; if(qc->login_retry>16){

fprintf(stderr,"too many times retried.\n");

return -EFAULT; } return

qq_login(qc,id,pass,login_mode,local_ip,local_port,inet_ntoa(in),ntohs(tmp16)); break;

}/*switch*/ } else {

printf("decrypt data error\n"); close(qc->server); qc->server = -1; qc->login_retry++; if(qc->login_retry>16){

fprintf(stderr,"too many times retried.\n");

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