| 1 | #include <sys/types.h> |
| 2 | #include <sys/socket.h> |
| 3 | #include <netinet/in.h> |
| 4 | #include <fcntl.h> |
| 5 | #include "byte.h" |
| 6 | #include "substdio.h" |
| 7 | #include "ip.h" |
| 8 | #include "fmt.h" |
| 9 | #include "timeoutconn.h" |
| 10 | #include "timeoutread.h" |
| 11 | #include "timeoutwrite.h" |
| 12 | #include "remoteinfo.h" |
| 13 | |
| 14 | static char line[999]; |
| 15 | static int t; |
| 16 | |
| 17 | static int mywrite(fd,buf,len) int fd; char *buf; int len; |
| 18 | { |
| 19 | return timeoutwrite(t,fd,buf,len); |
| 20 | } |
| 21 | static int myread(fd,buf,len) int fd; char *buf; int len; |
| 22 | { |
| 23 | return timeoutread(t,fd,buf,len); |
| 24 | } |
| 25 | |
| 26 | char *remoteinfo_get(ipr,rp,ipl,lp,timeout) |
| 27 | struct ip_address *ipr; |
| 28 | unsigned long rp; |
| 29 | struct ip_address *ipl; |
| 30 | unsigned long lp; |
| 31 | int timeout; |
| 32 | { |
| 33 | char *x; |
| 34 | int s; |
| 35 | struct sockaddr_in sin; |
| 36 | substdio ss; |
| 37 | char buf[32]; |
| 38 | unsigned int len; |
| 39 | int numcolons; |
| 40 | char ch; |
| 41 | |
| 42 | t = timeout; |
| 43 | |
| 44 | s = socket(AF_INET,SOCK_STREAM,0); |
| 45 | if (s == -1) return 0; |
| 46 | |
| 47 | byte_zero(&sin,sizeof(sin)); |
| 48 | sin.sin_family = AF_INET; |
| 49 | byte_copy(&sin.sin_addr,4,ipl); |
| 50 | sin.sin_port = 0; |
| 51 | if (bind(s,(struct sockaddr *) &sin,sizeof(sin)) == -1) { close(s); return 0; } |
| 52 | if (timeoutconn(s,ipr,113,timeout) == -1) { close(s); return 0; } |
| 53 | fcntl(s,F_SETFL,fcntl(s,F_GETFL,0) & ~O_NDELAY); |
| 54 | |
| 55 | len = 0; |
| 56 | len += fmt_ulong(line + len,rp); |
| 57 | len += fmt_str(line + len," , "); |
| 58 | len += fmt_ulong(line + len,lp); |
| 59 | len += fmt_str(line + len,"\r\n"); |
| 60 | |
| 61 | substdio_fdbuf(&ss,mywrite,s,buf,sizeof buf); |
| 62 | if (substdio_putflush(&ss,line,len) == -1) { close(s); return 0; } |
| 63 | |
| 64 | substdio_fdbuf(&ss,myread,s,buf,sizeof buf); |
| 65 | x = line; |
| 66 | numcolons = 0; |
| 67 | for (;;) { |
| 68 | if (substdio_get(&ss,&ch,1) != 1) { close(s); return 0; } |
| 69 | if ((ch == ' ') || (ch == '\t') || (ch == '\r')) continue; |
| 70 | if (ch == '\n') break; |
| 71 | if (numcolons < 3) { if (ch == ':') ++numcolons; } |
| 72 | else { *x++ = ch; if (x == line + sizeof(line) - 1) break; } |
| 73 | } |
| 74 | *x = 0; |
| 75 | close(s); |
| 76 | return line; |
| 77 | } |