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a0d0e21e LW |
1 | /* sockadapt.c |
2 | * | |
3 | * Author: Charles Bailey bailey@genetics.upenn.edu | |
9607fc9c | 4 | * Last Revised: 4-Mar-1997 |
a0d0e21e LW |
5 | * |
6 | * This file should contain stubs for any of the TCP/IP functions perl5 | |
7 | * requires which are not supported by your TCP/IP stack. These stubs | |
8 | * can attempt to emulate the routine in question, or can just return | |
9 | * an error status or cause perl to die. | |
10 | * | |
9607fc9c | 11 | * This version is set up for perl5 with UCX (or emulation) via |
12 | * the DECCRTL or SOCKETSHR 0.9D. | |
a0d0e21e LW |
13 | */ |
14 | ||
4633a7c4 LW |
15 | #include "EXTERN.h" |
16 | #include "perl.h" | |
9607fc9c | 17 | |
c07a80fd | 18 | #if defined(__DECC) && defined(__DECC_VER) && (__DECC_VER >= 50200000) |
9607fc9c | 19 | # define __sockadapt_my_hostent_t __struct_hostent_ptr32 |
c07a80fd | 20 | # define __sockadapt_my_netent_t __struct_netent_ptr32 |
9607fc9c | 21 | # define __sockadapt_my_servent_t __struct_servent_ptr32 |
c07a80fd | 22 | # define __sockadapt_my_addr_t __in_addr_t |
23 | # define __sockadapt_my_name_t const char * | |
24 | #else | |
9607fc9c | 25 | # define __sockadapt_my_hostent_t struct hostent * |
c07a80fd | 26 | # define __sockadapt_my_netent_t struct netent * |
9607fc9c | 27 | # define __sockadapt_my_servent_t struct servent * |
c07a80fd | 28 | # define __sockadapt_my_addr_t long |
29 | # define __sockadapt_my_name_t char * | |
30 | #endif | |
a0d0e21e | 31 | |
9607fc9c | 32 | void setnetent(int stayopen) { |
33 | croak("Function \"setnetent\" not implemented in this version of perl"); | |
34 | } | |
35 | void endnetent() { | |
36 | croak("Function \"endnetent\" not implemented in this version of perl"); | |
37 | } | |
38 | ||
39 | #if defined(DECCRTL_SOCKETS) | |
40 | /* Use builtin socket interface in DECCRTL and | |
41 | * UCX emulation in whatever TCP/IP stack is present. | |
42 | */ | |
43 | ||
44 | void sethostent(int stayopen) { | |
45 | croak("Function \"sethostent\" not implemented in this version of perl"); | |
46 | } | |
47 | void endhostent() { | |
48 | croak("Function \"endhostent\" not implemented in this version of perl"); | |
49 | } | |
50 | void setprotoent(int stayopen) { | |
51 | croak("Function \"setprotoent\" not implemented in this version of perl"); | |
52 | } | |
53 | void endprotoent() { | |
54 | croak("Function \"endprotoent\" not implemented in this version of perl"); | |
55 | } | |
56 | void setservent(int stayopen) { | |
57 | croak("Function \"setservent\" not implemented in this version of perl"); | |
58 | } | |
59 | void endservent() { | |
60 | croak("Function \"endservent\" not implemented in this version of perl"); | |
61 | } | |
62 | __sockadapt_my_hostent_t gethostent() { | |
63 | croak("Function \"gethostent\" not implemented in this version of perl"); | |
64 | return (__sockadapt_my_hostent_t )NULL; /* Avoid MISSINGRETURN warning, not reached */ | |
65 | } | |
66 | __sockadapt_my_servent_t getservent() { | |
67 | croak("Function \"getservent\" not implemented in this version of perl"); | |
68 | return (__sockadapt_my_servent_t )NULL; /* Avoid MISSINGRETURN warning, not reached */ | |
69 | } | |
70 | ||
71 | #else | |
72 | /* Work around things missing/broken in SOCKETSHR. */ | |
73 | ||
c07a80fd | 74 | __sockadapt_my_netent_t getnetbyaddr( __sockadapt_my_addr_t net, int type) { |
4633a7c4 LW |
75 | croak("Function \"getnetbyaddr\" not implemented in this version of perl"); |
76 | return (struct netent *)NULL; /* Avoid MISSINGRETURN warning, not reached */ | |
77 | } | |
c07a80fd | 78 | __sockadapt_my_netent_t getnetbyname( __sockadapt_my_name_t name) { |
4633a7c4 LW |
79 | croak("Function \"getnetbyname\" not implemented in this version of perl"); |
80 | return (struct netent *)NULL; /* Avoid MISSINGRETURN warning, not reached */ | |
81 | } | |
c07a80fd | 82 | __sockadapt_my_netent_t getnetent() { |
4633a7c4 | 83 | croak("Function \"getnetent\" not implemented in this version of perl"); |
9607fc9c | 84 | return (__sockadapt_my_netent_t )NULL; /* Avoid MISSINGRETURN warning, not reached */ |
c07a80fd | 85 | } |
42084d09 | 86 | |
87 | /* Some TCP/IP implementations seem to return success, when getpeername() | |
88 | * is called on a UDP socket, but the port and in_addr are all zeroes. | |
89 | */ | |
90 | ||
91 | int my_getpeername(int sock, struct sockaddr *addr, int *addrlen) { | |
92 | static char nowhere[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"; | |
93 | int rslt; | |
94 | ||
95 | rslt = si_getpeername(sock, addr, addrlen); | |
96 | ||
97 | /* Just pass an error back up the line */ | |
98 | if (rslt) return rslt; | |
99 | ||
100 | /* If the call succeeded, make sure we don't have a zeroed port/addr */ | |
101 | if (addr->sa_family == AF_INET && | |
102 | !memcmp((char *)addr + sizeof(u_short), nowhere, | |
103 | sizeof(u_short) + sizeof(struct in_addr))) { | |
104 | rslt = -1; | |
105 | SETERRNO(ENOTCONN,SS$_CLEARED); | |
106 | } | |
107 | return rslt; | |
108 | } | |
9607fc9c | 109 | #endif /* SOCKETSHR stuff */ |