百度质量部面试笔试体验之—三面

1、百度质量部面试笔试体验之一三面1.有过什么实习经历啊？1.1安天实验室在哈尔滨安天实验室，我在 CERT组实习，跟过两个大神，一 个是胡哥，部门技术经理，在异常分析方面很犀利。一个是swordlea， 对李哥的印象就是 C+大神，同时他也是 CERT老大。当时的项目 是做一个whois的查询插件，VC+编写。当然的组件功能是输入一 个IP地址，能够查询出它的whois信息，因为有点久了，当时也是 借鉴网上代码写出来的，自己的代码找不到了（当然怎么就没备份呢），就拿网上的代码凑合一下：/* brief* Whois clie nt program* details* This program s

2、hall fetch whois data for a IPv4 address.* author Silver Moon ( mOO n. silv3r )* */#in clude /sca nf , printf#i nclude /strtok#i nclude /realloc#in clude /socket#i nclude sockaddr_i n#in clude /getsock name#in clude /hoste nt#i nclude /closeint main (i nt argc , char *argv)char ip100 , *data = NULL;

3、printf( En ter ip address to whois :sca nf( %s , ip);get_whois(ip , data);printf(puts(data);free(data);return 0;Get the whois content of an ip by Selecti ng the correct server */void get_whois(char *ip , char *data)char *wch = NULL, *pch , *resp onse = NULL; if(whois_query( whois.ia , ip , re

4、sp on se) printf( Whois query failedpch = strtok(resp onse ,while(pch != NULL)/Check if whois linewch = strstr(pch , whois.if(wch != NULL)break;/Next line please pch = strtok(NULL ,if(wch != NULL)printf( Whois server is : %s , wch);whois_query(wch , ip , data);else*data = malloc(100);strcpy(*data ,

5、No whois datareturn;/*thechar* Perform a whois query to a server an d record resp onse* */int whois_query(char *server , char *query ,*resp on se)char ip32 , message100 , buffer1500;int sock , read_size , total_size = 0;struct sockaddr_i n dest;sock = socket(AF_INET , SOCK_STREAM , IPPROTO_TCP);/Pre

6、pare conn ecti on structures :)memset( dest , 0 , sizeof(dest);dest.sin_family = AF_INET;printf( Resol ving %s. , server);if(host name_t 0p(server , ip)printf( Failedreturn 1;printf( %s , ip);dest.s in _addr.s_addr = in et_addr( ip );dest.s in _port = htons( 43 );/Now connect to remote serverif(conn

7、 ect( sock , (const struct sockaddr*) dest sizeof(dest) ) 0)perror( connect failed/Now send some data or messageprintf( Query ing for . %s . , query);spri ntf(message , %s , query);if( sen d(sock , message , strle n( message) , 0) 0)perror( send failed/Now receive the resp onsewhile( (read_size = re

8、cv(sock , buffer , sizeof(buffer) , 0) *resp onse = realloc(*resp onse , read_size + total_size);if(*resp onse = NULL)printf( realloc failedmemcpy(*resp onse + total_size , buffer , read_size);total_size += read_size;printf( Donefflush(stdout);*resp onse = realloc(*resp onse , total_size + 1);*(*res

9、p onse + total_size)=”；close(sock);return 0;/* brief* Get the ip address of a give n host name* */int host name_t 0p(char * host name , char* ip)struct hoste nt *he;struct in _addr *addr_list;int i;if ( (he = gethostb yn ame( host name ) ) = NULL)/ get the host infoherror( gethostb yn amereturn 1;addr_list = (struct in _