77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <fcntl.h>
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#include "byte.h"
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#include "substdio.h"
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#include "ip.h"
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#include "fmt.h"
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#include "timeoutconn.h"
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#include "timeoutread.h"
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#include "timeoutwrite.h"
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#include "remoteinfo.h"
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static char line[999];
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static int t;
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static int mywrite(fd,buf,len) int fd; char *buf; int len;
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{
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return timeoutwrite(t,fd,buf,len);
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}
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static int myread(fd,buf,len) int fd; char *buf; int len;
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{
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return timeoutread(t,fd,buf,len);
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}
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char *remoteinfo_get(ipr,rp,ipl,lp,timeout)
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struct ip_address *ipr;
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unsigned long rp;
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struct ip_address *ipl;
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unsigned long lp;
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int timeout;
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{
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char *x;
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int s;
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struct sockaddr_in sin;
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substdio ss;
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char buf[32];
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unsigned int len;
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int numcolons;
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char ch;
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t = timeout;
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s = socket(AF_INET,SOCK_STREAM,0);
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if (s == -1) return 0;
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byte_zero(&sin,sizeof(sin));
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sin.sin_family = AF_INET;
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byte_copy(&sin.sin_addr,4,ipl);
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sin.sin_port = 0;
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if (bind(s,(struct sockaddr *) &sin,sizeof(sin)) == -1) { close(s); return 0; }
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if (timeoutconn(s,ipr,113,timeout) == -1) { close(s); return 0; }
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fcntl(s,F_SETFL,fcntl(s,F_GETFL,0) & ~O_NDELAY);
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len = 0;
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len += fmt_ulong(line + len,rp);
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len += fmt_str(line + len," , ");
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len += fmt_ulong(line + len,lp);
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len += fmt_str(line + len,"\r\n");
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substdio_fdbuf(&ss,mywrite,s,buf,sizeof buf);
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if (substdio_putflush(&ss,line,len) == -1) { close(s); return 0; }
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substdio_fdbuf(&ss,myread,s,buf,sizeof buf);
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x = line;
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numcolons = 0;
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for (;;) {
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if (substdio_get(&ss,&ch,1) != 1) { close(s); return 0; }
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if ((ch == ' ') || (ch == '\t') || (ch == '\r')) continue;
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if (ch == '\n') break;
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if (numcolons < 3) { if (ch == ':') ++numcolons; }
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else { *x++ = ch; if (x == line + sizeof(line) - 1) break; }
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}
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*x = 0;
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close(s);
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return line;
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}
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