| |
1 /* This file is part of the Project Athena Zephyr Notification System. |
| |
2 * It contains source for the ZSendPacket function. |
| |
3 * |
| |
4 * Created by: Robert French |
| |
5 * |
| |
6 * Copyright (c) 1987,1991 by the Massachusetts Institute of Technology. |
| |
7 * For copying and distribution information, see the file |
| |
8 * "mit-copyright.h". |
| |
9 */ |
| |
10 |
| |
11 #include "internal.h" |
| |
12 #ifdef WIN32 |
| |
13 #include <winsock.h> |
| |
14 #else |
| |
15 #include <sys/socket.h> |
| |
16 #endif |
| |
17 |
| |
18 static int wait_for_hmack(ZNotice_t *notice, void *uid); |
| |
19 |
| |
20 Code_t ZSendPacket(packet, len, waitforack) |
| |
21 char *packet; |
| |
22 int len; |
| |
23 int waitforack; |
| |
24 { |
| |
25 Code_t retval; |
| |
26 struct sockaddr_in dest; |
| |
27 ZNotice_t notice, acknotice; |
| |
28 |
| |
29 if (!packet || len < 0) |
| |
30 return (ZERR_ILLVAL); |
| |
31 |
| |
32 if (len > Z_MAXPKTLEN) |
| |
33 return (ZERR_PKTLEN); |
| |
34 |
| |
35 if (ZGetFD() < 0) |
| |
36 if ((retval = ZOpenPort((unsigned short *)0)) != ZERR_NONE) |
| |
37 return (retval); |
| |
38 |
| |
39 dest = ZGetDestAddr(); |
| |
40 |
| |
41 if (sendto(ZGetFD(), packet, len, 0, (struct sockaddr *)&dest, |
| |
42 sizeof(dest)) < 0) |
| |
43 return (errno); |
| |
44 |
| |
45 if (!waitforack) |
| |
46 return (ZERR_NONE); |
| |
47 |
| |
48 if ((retval = ZParseNotice(packet, len, ¬ice)) != ZERR_NONE) |
| |
49 return (retval); |
| |
50 |
| |
51 retval = Z_WaitForNotice (&acknotice, wait_for_hmack, ¬ice.z_uid, |
| |
52 HM_TIMEOUT); |
| |
53 if (retval == ETIMEDOUT) |
| |
54 return ZERR_HMDEAD; |
| |
55 if (retval == ZERR_NONE) |
| |
56 ZFreeNotice (&acknotice); |
| |
57 return retval; |
| |
58 } |
| |
59 |
| |
60 static int wait_for_hmack(ZNotice_t *notice, void *uid) |
| |
61 { |
| |
62 return (notice->z_kind == HMACK && ZCompareUID(¬ice->z_uid, (ZUnique_Id_t *)uid)); |
| |
63 } |