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annotate src/libident/id_query.c @ 88:39014fc31dbe

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added a document that describes UUCP relevant stuff I'm not familiar with UUCP, so I hope the information is correct
author meillo@marmaro.de
date Sat, 19 Jun 2010 18:53:45 +0200 (2010-06-19)
parents 26e34ae9a3e3
children
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1 /*
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2 ** id_query.c Transmit a query to an IDENT server
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3 **
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4 ** Author: Peter Eriksson <pen@lysator.liu.se>
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5 */
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6
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7 #ifdef NeXT3
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8 # include <libc.h>
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9 #endif
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10
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11 #include <stdio.h>
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12 #include <errno.h>
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13 #include <signal.h>
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14
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15 #ifdef HAVE_ANSIHEADERS
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16 # include <stdlib.h>
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17 # include <string.h>
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18 # include <unistd.h>
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19 #endif
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20
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21 #include <sys/types.h>
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22 #include <sys/wait.h>
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23 #include <sys/time.h>
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24
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25 #ifdef _AIX
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26 # include <sys/select.h>
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27 #endif
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28
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29 #ifdef _AIX
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30 # include <sys/select.h>
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31 #endif
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32 #ifdef VMS
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33 # include <sys/socket.h> /* for fd_set */
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34 #endif
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35 #define IN_LIBIDENT_SRC
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36 #include "ident.h"
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37
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38
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39 /*
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40 int
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41 id_query __P4(ident_t *, id, int, lport, int, fport, struct timeval *, timeout)
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42 */
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43
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44 int
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45 id_query __P((ident_t * id, int lport, int fport, __STRUCT_TIMEVAL_P timeout))
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46 {
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47 #ifdef SIGRETURNTYPE
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48 SIGRETURNTYPE(*old_sig) ();
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49 #else
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50 void (*old_sig) __P((int));
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51 #endif
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52 int res;
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53 char buf[80];
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54 fd_set ws;
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55
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56 sprintf(buf, "%d , %d\r\n", lport, fport);
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57
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58 if (timeout) {
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59 FD_ZERO(&ws);
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60 FD_SET(id->fd, &ws);
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61
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62 #ifdef __hpux
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63 if ((res = select(FD_SETSIZE, (int *) 0, (int *) &ws, (int *) 0, timeout)) < 0)
0
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64 #else
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65 if ((res = select(FD_SETSIZE, (fd_set *) 0, &ws, (fd_set *) 0, timeout)) < 0)
0
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66 #endif
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67 return -1;
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68
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69 if (res == 0) {
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70 errno = ETIMEDOUT;
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71 return -1;
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72 }
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73 }
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74
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75 old_sig = signal(SIGPIPE, SIG_IGN);
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77 res = write(id->fd, buf, strlen(buf));
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78
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79 signal(SIGPIPE, old_sig);
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80
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81 return res;
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82 }