网口TELNET编程学习范例

#include <stdio.h> #include <stdlib.h> #include <errno.h> #include <string.h> #include <sys/types.h> #include <netinet/in.h> #include <sys/socket.h> #include <sys/wait.h> #include <sys/types.h> #include <sys/ipc.h> #include <sys/msg.h> #include <netdb.h> #include <ctype.h> #include <fcntl.h> #include "fTelnet.h" int main(argc,argv) int argc; char **argv; { char strBuff[256]; char szRecBuff[256]; int socClient; char szCmdText[16]; char ErrorMessage[100]; struct sockaddr_in SerAddress; int i; int j; int nRtn; memset(strBuff,0X00,sizeof(strBuff)); InitTelnetClientState(); /*dms 130.76.23.250*/ /*axe 10.156.66.187*/ /*s1240 130.76.4.122*/ /*cc08 172.16.23.54*/ /*zxj 10.20.41.253*/ /*t 10.20.0.239*/ if((socClient=OpenSocketStream("192.168.82.25",23,ErrorMessage))<0) { printf("Open Socket Error!!\n"); printf("ErrorMessage is %s \n",ErrorMessage); return 0; } if(fcntl(socClient,F_SETFL,O_NONBLOCK) == -1) { printf("System error. O_NONBLOCK\n"); return -10; } strcpy(strBuff,"TERM=vt100\nexport TERM\nstty erase '^?'\n"); send(socClient, strBuff, strlen(strBuff), 0); //send(socClient, "post\0", 4, 0); for(;;) { j = 0; for(;;) { nRtn=recv(socClient, szRecBuff,255, 0); if(nRtn >0) { for(i=0;i<nRtn;i++) { if(szRecBuff[i]>32) { printf("%c ",szRecBuff[i]); } else { printf("%02x ",(unsigned char)szRecBuff[i]); /*if(szRecBuff[i]==0) szRecBuff[i]=0x20;*/ } } szRecBuff[nRtn] = '\0'; strcpy(szRecBuff,(char *)Negotiate(szRecBuff,socClient)); printf("\nrecv%d:%s\n",nRtn,szRecBuff); j=0; if(strstr(szRecBuff,"login:")||strstr(szRecBuff,"Password:")||strstr(szRecBuff,"#")||strstr(szRecBuff,"请输入口令")) break; if(strstr(szRecBuff,"login:")||strstr(szRecBuff,"Password:")) { if(!strstr(szRecBuff,"Last login:")) break; } if(strstr(szRecBuff,"<")) break; } else { j++; if(j>10*10) { break; } usleep(1000*100); } printf("********* ceshi ********\n"); } printf(":"); scanf("%s",strBuff); printf("%s\n",strBuff); for(i=0;i<strlen(strBuff);i++) { if(strBuff[i] == '~') strBuff[i] = ' '; } if(strcmp(strBuff,"0") == 0) { sprintf(strBuff,"%s\0","post"); i = strlen(strBuff); } if(strcmp(strBuff,"1") == 0) { sprintf(strBuff,"%s\n","root"); i = strlen(strBuff); } if(strcmp(strBuff,"2") == 0) { sprintf(strBuff,"%s\n","root"); i = strlen(strBuff); } if(strcmp(strBuff,"3") == 0) { sprintf(strBuff,"%s\n","date"); i = strlen(strBuff); } nRtn=send(socClient, strBuff, i, 0); if(nRtn == i) { printf("send cmd success %d\n",i); } else { printf("send cmd error\n"); } } close(socClient); return 0; }