/[dtapublic]/projs/trunk/shared_source/c_tcl_base_7_5_w_mods/tcliosock.c
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Contents of /projs/trunk/shared_source/c_tcl_base_7_5_w_mods/tcliosock.c

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Revision 29 - (show annotations) (download)
Sat Oct 8 07:08:47 2016 UTC (7 years, 1 month ago) by dashley
Original Path: to_be_filed/sf_code/esrgpcpj/shared/tcl_base/tcliosock.c
File MIME type: text/plain
File size: 3385 byte(s)
Directories relocated.
1 /* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tcliosock.c,v 1.1.1.1 2001/06/13 04:42:17 dtashley Exp $ */
2
3 /*
4 * tclIOSock.c --
5 *
6 * Common routines used by all socket based channel types.
7 *
8 * Copyright (c) 1995-1997 Sun Microsystems, Inc.
9 *
10 * See the file "license.terms" for information on usage and redistribution
11 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
12 *
13 * RCS: @(#) $Id: tcliosock.c,v 1.1.1.1 2001/06/13 04:42:17 dtashley Exp $
14 */
15
16 #include "tclInt.h"
17 #include "tclPort.h"
18
19 /*
20 *---------------------------------------------------------------------------
21 *
22 * TclSockGetPort --
23 *
24 * Maps from a string, which could be a service name, to a port.
25 * Used by socket creation code to get port numbers and resolve
26 * registered service names to port numbers.
27 *
28 * Results:
29 * A standard Tcl result. On success, the port number is returned
30 * in portPtr. On failure, an error message is left in the interp's
31 * result.
32 *
33 * Side effects:
34 * None.
35 *
36 *---------------------------------------------------------------------------
37 */
38
39 int
40 TclSockGetPort(interp, string, proto, portPtr)
41 Tcl_Interp *interp;
42 char *string; /* Integer or service name */
43 char *proto; /* "tcp" or "udp", typically */
44 int *portPtr; /* Return port number */
45 {
46 struct servent *sp; /* Protocol info for named services */
47 Tcl_DString ds;
48 char *native;
49
50 if (Tcl_GetInt(NULL, string, portPtr) != TCL_OK) {
51 /*
52 * Don't bother translating 'proto' to native.
53 */
54
55 native = Tcl_UtfToExternalDString(NULL, string, -1, &ds);
56 sp = getservbyname(native, proto); /* INTL: Native. */
57 Tcl_DStringFree(&ds);
58 if (sp != NULL) {
59 *portPtr = ntohs((unsigned short) sp->s_port);
60 return TCL_OK;
61 }
62 }
63 if (Tcl_GetInt(interp, string, portPtr) != TCL_OK) {
64 return TCL_ERROR;
65 }
66 if (*portPtr > 0xFFFF) {
67 Tcl_AppendResult(interp, "couldn't open socket: port number too high",
68 (char *) NULL);
69 return TCL_ERROR;
70 }
71 return TCL_OK;
72 }
73
74 /*
75 *----------------------------------------------------------------------
76 *
77 * TclSockMinimumBuffers --
78 *
79 * Ensure minimum buffer sizes (non zero).
80 *
81 * Results:
82 * A standard Tcl result.
83 *
84 * Side effects:
85 * Sets SO_SNDBUF and SO_RCVBUF sizes.
86 *
87 *----------------------------------------------------------------------
88 */
89
90 int
91 TclSockMinimumBuffers(sock, size)
92 int sock; /* Socket file descriptor */
93 int size; /* Minimum buffer size */
94 {
95 int current;
96 /*
97 * Should be socklen_t, but HP10.20 (g)cc chokes
98 */
99 size_t len;
100
101 len = sizeof(int);
102 getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char *)&current, &len);
103 if (current < size) {
104 len = sizeof(int);
105 setsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char *)&size, len);
106 }
107 len = sizeof(int);
108 getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&current, &len);
109 if (current < size) {
110 len = sizeof(int);
111 setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&size, len);
112 }
113 return TCL_OK;
114 }
115
116
117 /* $History: tcliosock.c $
118 *
119 * ***************** Version 1 *****************
120 * User: Dtashley Date: 1/02/01 Time: 1:33a
121 * Created in $/IjuScripter, IjuConsole/Source/Tcl Base
122 * Initial check-in.
123 */
124
125 /* End of TCLIOSOCK.C */

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