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1 /* This file is part of the Project Athena Zephyr Notification System. |
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2 * It contains the ZhmStat() function. |
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3 * |
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4 * Created by: Marc Horowitz |
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5 * |
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6 * Copyright (c) 1996 by the Massachusetts Institute of Technology. |
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7 * For copying and distribution information, see the file |
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8 * "mit-copyright.h". |
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9 */ |
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10 |
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11 #include "internal.h" |
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12 |
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13 #ifdef WIN32 |
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14 #include <winsock2.h> |
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15 #else |
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16 #include <sys/socket.h> |
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17 #endif |
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18 |
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19 #ifndef INADDR_LOOPBACK |
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20 #define INADDR_LOOPBACK 0x7f000001 |
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21 #endif |
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22 |
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23 Code_t ZhmStat(hostaddr, notice) |
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24 struct in_addr *hostaddr; |
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25 ZNotice_t *notice; |
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26 { |
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27 struct servent *sp; |
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28 struct sockaddr_in sin; |
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29 ZNotice_t req; |
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30 Code_t code; |
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31 struct timeval tv; |
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32 fd_set readers; |
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33 |
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34 (void) memset((char *)&sin, 0, sizeof(struct sockaddr_in)); |
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35 |
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36 sp = getservbyname(HM_SVCNAME, "udp"); |
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37 |
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38 sin.sin_port = (sp) ? sp->s_port : HM_SVC_FALLBACK; |
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39 sin.sin_family = AF_INET; |
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40 |
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41 if (hostaddr) |
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42 sin.sin_addr = *hostaddr; |
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43 else |
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44 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
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45 |
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46 (void) memset((char *)&req, 0, sizeof(req)); |
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47 req.z_kind = STAT; |
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48 req.z_port = 0; |
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49 req.z_class = HM_STAT_CLASS; |
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50 req.z_class_inst = HM_STAT_CLIENT; |
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51 req.z_opcode = HM_GIMMESTATS; |
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52 req.z_sender = ""; |
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53 req.z_recipient = ""; |
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54 req.z_default_format = ""; |
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55 req.z_message_len = 0; |
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56 |
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57 if ((code = ZSetDestAddr(&sin)) != ZERR_NONE) |
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58 return(code); |
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59 |
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60 if ((code = ZSendNotice(&req, ZNOAUTH)) != ZERR_NONE) |
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61 return(code); |
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62 |
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63 /* Wait up to ten seconds for a response. */ |
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64 FD_ZERO(&readers); |
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65 FD_SET(ZGetFD(), &readers); |
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66 tv.tv_sec = 10; |
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67 tv.tv_usec = 0; |
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68 code = select(ZGetFD() + 1, &readers, NULL, NULL, &tv); |
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69 if (code < 0 && errno != EINTR) |
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70 return(errno); |
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71 if (code == 0 || (code < 0 && errno == EINTR) || ZPending() == 0) |
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72 return(ZERR_HMDEAD); |
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73 |
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74 return(ZReceiveNotice(notice, (struct sockaddr_in *) 0)); |
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75 } |