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发信人: yaomaohua.bbs@bbs.qxntc.edu.cn (〆ゞ毛毛), 信区: InstallBBS
标 题: linux下下载文章的程序
发信站: 笔山书院_BBS (Wed Nov 3 21:59:06 2004)
转信站: SZU!news.szu.edu.cn!news.uestc.edu.cn!QXNTC
寄信人: sdymhua.bbs@bbs.uestc.edu.cn
标 题: Linux下下载文章的程序 activity (转寄)
发信站: 笔山书院 BBS (Wed Nov 3 21:54:11 2004)
发信人: activity (狂魔☆我爱竹林), 信区: BBSDev
标 题: Linux下下载文章的程序
发信站: 一网深情 (Tue Jul 18 17:32:56 2000), 转信
/* Redhat 6.1下通过---仍然不是很完善,可以凑合着用:)
用法:到要下载的文章标题前按Ctrl+T,写上要存的文件名就OK了
能下载信件,精华区文章,讨论区文章
有自动回信功能
gcc -o bbs bbs.c
./bbs <ip or host> [port]
*/
#include <sys/signal.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <netdb.h>
#include <fcntl.h>
#include <string.h>
#include <termios.h>
#include <sys/wait.h>
#include <stdio.h>
#include <stdarg.h>
#include <unistd.h>
#include <errno.h>
#define BUFSIZE 2048
extern int errno;
int servfd;
int nCanDel;
int Auto=0;/*自动回信息*/
int port=23;
struct termios oldtty,newtty;
int dowith(char*,short);
void writeFile(int,char*,size_t);
void GetFile();
void PostFile();
void autoReply();
void source(char *,int);
int handleopt();
int errexit(const char *format,...);
int main(int argc,char **argv)
{
if((argc!=2)&& (argc!=3))
errexit("Usage:%s <host> [port]\n",argv[0]);
if (argc==3) port=atoi(argv[2]);
tcgetattr(0,&oldtty);
signal(SIGINT,SIG_IGN);
signal(SIGQUIT,SIG_IGN);
newtty = oldtty;
newtty.c_cc[VINTR] = _POSIX_VDISABLE;
newtty.c_cc[VQUIT] = _POSIX_VDISABLE;
newtty.c_cc[VSUSP] = _POSIX_VDISABLE;
newtty.c_lflag &= 0;//!(ECHO|ECHOE|ECHOK|ECHONL);
dowith(argv[1],port);
tcsetattr(0,TCSANOW,&oldtty);
return 1;
}
int dowith(char* host,short port)
{
int i,datalen,nfds,ch,fd=0;
char buf[4096],key[64];
fd_set aset,rset; /* active file discriptor */
struct hostent* phe;
struct sockaddr_in saddr;
if((servfd=socket(AF_INET,SOCK_STREAM,0))<0)
errexit("socket:%s\n",strerror(errno));
memset(&saddr,0,sizeof(saddr));
saddr.sin_family = AF_INET;
if(phe = gethostbyname(host))
memcpy(&saddr.sin_addr,phe->h_addr,phe->h_length);
else if(inet_pton(AF_INET,host,&saddr.sin_addr)==0)
errexit("inet_pton:%s\n",strerror(errno));
saddr.sin_port = htons(port);
inet_ntop(AF_INET,&saddr.sin_addr,key,64);
printf("Connecting to %s(%s)\n",host,key);
if((i=connect(servfd,(struct sockaddr*)&saddr,sizeof(saddr)))<0)
errexit("connect:%s\n",strerror(errno));
FD_ZERO(&aset);
FD_SET(servfd,&aset);
FD_SET(fd,&aset);
nfds=fd>servfd?(fd+1):(servfd+1);
if(handleopt()==-1) return -1;
tcsetattr(0,TCSANOW,&newtty);//修改标准输入0的属性
while(1)
{
memcpy(&rset,&aset,sizeof(rset));
if(select(nfds,&rset,(fd_set *)0,(fd_set *)0,(struct timeval*)
0)<0)
if(errno==EINTR)
continue;
else
errexit("select: %s\n",strerror(errno));
if(FD_ISSET(0,&rset))
{
ch=read(0,key,64);
switch(key[0])
{
case '\x14': //自定义的热键Ctrl+T
GetFile();break;
case '\xf': //Ctrl+O
PostFile();break;
case '\x1d': //Ctrl+],quit
tcsetattr(0,TCSANOW,&oldtty);
close(servfd);
exit(0);
case 2: /* Ctr+b */
source(buf,datalen);
break;
case 3: /* Ctr+c */
Auto = !(Auto);
printf("\x1b[s\x1b[25;1H\x1b[1;32m");
if(Auto)
printf("自动回信功能开启了");
else
printf("自动回信功能关闭了");
printf("\x1b[m\x1b[s");
fflush(stdout);
break;
default:
if(write(servfd,key,ch)==-1)
errexit("write:%s\n",strerror(errno));
}
}
if(FD_ISSET(servfd,&rset))
if((datalen=read(servfd,buf,4095))>=0)
{
if(datalen==0)
break;
if(Auto==1&&*buf==7)
autoReply();
else
{
buf[datalen] = NULL;
if(write(1,buf,datalen)==-1)
errexit("write:%s\n",strerror(errno));
fflush(stdout);
}
}
}
return 0;
}
void autoReply()
{
char buf[100];
char *msg="\x1a(ZH自动回信):抱歉,我不在这里!\r\n";
write(servfd,msg,strlen(msg));
read(servfd,buf,100);
}
void source(char *buf,int len)
{
char *p;
printf("\x1b[1;1H\x1b[J");
p = buf;
while(p-buf<len)
{
if(*p==27)
printf("^[");
else
printf("%c",*p);
p++;
}
fflush(stdout);
getchar();
write(servfd,"\xc",1);
}
void GetFile()
{
int nFile,size;
char filename[256],*pstr,buf[BUFSIZE],*p;
printf("\x1b[25;1H\x1b[K\x1b[1;31mSave as:\x1b[m");
tcsetattr(0,TCSANOW,&oldtty);
scanf("%s",filename);
tcsetattr(0,TCSANOW,&newtty);
if(!strcmp(filename,"cancel"))
{
write(servfd,"\xc",1);//Ctrl+L 重绘屏幕
return;
}
if((nFile=open(filename,O_CREAT|O_WRONLY,S_IRUSR|S_IWUSR))<0)
{
printf("\x1b[s\x1b[1;32mopen:%s\x1b[m\x1b[u",strerror(errno));
return;
}
write(servfd,"\x1b[C",3);
nCanDel = 0;
while(1)
{
if((size=read(servfd,buf,BUFSIZE-1))<=0)
{
close(servfd);
printf("read error\n");
close(nFile);
exit(0);
}
write(1,buf,size);
buf[size] = '\0';
if((pstr=strstr(buf,"\x1b[1;44;32m下面还有喔"))==NULL)
{
if((pstr=strstr(buf,"\x1b[1;44;31m[阅读文章]"))!=NULL)
{
while(*pstr--!='[');
while(*pstr--!='\x1b');//找到文章的结束
writeFile(nFile,buf,pstr-buf+1);
break;
}
if((pstr=strstr(buf,"(G)继续?"))!=NULL)
{
while(*pstr--!='R');
pstr--;
writeFile(nFile,buf,pstr-buf+1);
break;
}
if((pstr=strstr(buf,"按任何键继续"))!=NULL)
{
pstr--;
writeFile(nFile,buf,pstr-buf+1);
break;
}
pstr = &buf[size-1];
writeFile(nFile,buf,pstr-buf+1);
}else
{
write(servfd,"\x1b[C",3);
while(*pstr--!='\x1b');//去掉屏幕最低端的信息
if((p=strstr(buf,"\x1b[H\x1b[J")))
while(*p++!='\xd');//cut one line
else
p = buf;
writeFile(nFile,p,pstr-p+1);
}
}
close(nFile);
write(servfd,"\x1b[D",3);
printf("\x1b[s\x1b[25;1H\x1b[K\x1b[1;31mGetting complete\x1b[m\x1b[u");
}
void writeFile(int fd,char* buf,size_t size)
{
char *pstr,*p,ret=0;
if((p=strstr(buf,"\x1b[5;1H"))!=NULL||(p=strstr(buf,"\x1b[6;1H"))!=NULL)
{
p[0] = 0;
p[1] = 0;
p[2] = 0;
p[3] = 0;
p[4] = '\n';
p[5] = '\n';
}
p=buf;
pstr = buf+size-1;
while(p<=pstr)
{
if(*p=='\x1b')
{//删除所有控制字符串,规则是以ESC开始,以一个字母结束的串
while(!((*p>='A'&&*p<='Z')||(*p>='a'&&*p<='z')))
*p++='\0';
if(*p=='H')
*p='\n';
if(*p!='J')
*p='\0';
else if(nCanDel)
{
while(*p!='\n'&&*p!='\x1b')
*p++='\0';
if(*p=='\x1b')
p--;
}else
*p = '\0';
}
if(*p=='\xd')
*p = '\0';
p++;
}
p = buf;
while(p<=pstr)
{
if(*p!='\0')
if(!(*p=='\n'&&ret==1))/* 删除多余的回车符 */
write(fd,p,1);
if(*p=='\n')
ret = 1;
else
ret = 0;
p++;
}
nCanDel = 1;
}
void PostFile()
{
int nFile,size;
char name[256],buf[BUFSIZE];
printf("\x1b[25;1H\x1b[1;31mOpen filename:\x1b[m");
tcsetattr(0,TCSANOW,&oldtty);
scanf("%s",name);
tcsetattr(0,TCSANOW,&newtty);
if(!strcmp(name,"cancel"))
{
write(servfd,"\xc",1);//Ctrl+L 重绘屏幕
return;
}
if((nFile=open(name,O_RDONLY))<0)
{
printf("\x1b[s\x1b[25;1HCannot open this file\x1b[u\xc");
return;
}
if((size=read(nFile,&buf,BUFSIZE))<0)
{
printf("read:%s\n",strerror(errno));
close(nFile);
return;
}
write(servfd,buf,size);
while(size>0)
{
if((size=read(nFile,&buf,BUFSIZE))<0)
{
printf("read:%s\n",strerror(errno));
close(nFile);
return;
}
write(servfd,buf,size);
}
close(nFile);
write(servfd,"\xc",1);//Ctrl+L
}
/* errexit - print a error message and exit */
int errexit(const char *format,...)
{
va_list args;
if(errno==EINTR)
return;
va_start(args,format);
vfprintf(stderr,format,args);
va_end(args);
exit(1);
}
int handleopt()
{
int n;
char term[]="linux";//"VT100";"dumb";
unsigned char c,cmd,opt,ch;
for(;;)
{
n=read(servfd,&c,1);
if( n<=0 ) {printf("socket read error.\n",n); return -1;exit(-1)
; }
if (c == 255)
{
read(servfd,&cmd,1);
read(servfd,&opt,1);
switch(opt)
{
case 1:
case 3:
break;
case 24:
if (cmd == 253)
{
write(servfd,"\xff\xfb\x18\xff\xfa\x18\x0",7);
write(servfd,term,strlen(term));
write(servfd,"\xff\xf0",2);
}
else if (cmd == 250)
{
read(servfd,&ch,1);
while(ch!= 240)
read(servfd,&ch,1);
}
break;
default:
if (cmd == 253)
{
write(servfd,"\xff\xfc",2);
write(servfd,&opt,1);
}
}//end switch
}//end if c==255
else return 1;
}//end for
}
--
※ 修改:．activity 于 Aug 7 23:01:09 修改本文．[FROM: 202.115.52.56]
※ 来源:．一网深情 bbs.uestc.edu.cn．[FROM: 202.115.52.56]
--
※ 转寄:·一网深情 bbs.uestc.edu.cn·[FROM: bbs.qxntc.edu.cn]
--
※———————※
| 〆ゞ毛毛 ^0^ |
|xztu.3322.org |
※———————※
※ 来源:．笔山书院 BBS bbs.qxntc.edu.cn．[FROM: 219.141.120.*]
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