1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include "uucp.h" 34 35 #define MSYNC '\020' 36 /* maximum likely message - make sure you don't get run away input */ 37 #define MAXIMSG 256 38 39 /* 40 * read message routine used before a 41 * protocol is agreed upon. 42 * msg -> address of input buffer 43 * fn -> input file descriptor 44 * returns: 45 * EOF -> no more messages 46 * 0 -> message returned 47 */ 48 int 49 imsg(msg, fn) 50 char *msg; 51 int fn; 52 { 53 char c; 54 int i; 55 short fndsync; 56 char *bmsg; 57 58 fndsync = 0; 59 bmsg = msg; 60 CDEBUG(7, "imsg %s>", ""); 61 while ((i = (*Read)(fn, msg, sizeof(char))) == sizeof(char)) { 62 *msg &= 0177; 63 c = *msg; 64 CDEBUG(7, "%s", c < 040 ? "^" : ""); 65 CDEBUG(7, "%c", c < 040 ? c | 0100 : c); 66 if (c == MSYNC) { /* look for sync character */ 67 msg = bmsg; 68 fndsync = 1; 69 continue; 70 } 71 if (!fndsync) 72 continue; 73 74 if (c == '\0' || c == '\n') { 75 *msg = '\0'; 76 return(0); 77 } 78 else 79 msg++; 80 81 if (msg - bmsg > MAXIMSG) /* unlikely */ 82 return(FAIL); 83 } 84 /* have not found sync or end of message */ 85 if (i < 0) { 86 CDEBUG(7, "\nimsg read error: %s\n", strerror(errno)); 87 } 88 *msg = '\0'; 89 return(EOF); 90 } 91 92 /* 93 * initial write message routine - 94 * used before a protocol is agreed upon. 95 * type -> message type 96 * msg -> message body address 97 * fn -> file descriptor 98 * return: 99 * Must always return 0 - wmesg (WMESG) looks for zero 100 */ 101 int 102 omsg(type, msg, fn) 103 char *msg; 104 char type; 105 int fn; 106 { 107 char buf[BUFSIZ]; 108 109 (void) sprintf(buf, "%c%c%s", MSYNC, type, msg); 110 DEBUG( 7, "omsg \"%s\"\n", &buf[1] ); 111 (*Write)(fn, buf, strlen(buf) + 1); 112 return(0); 113 } 114 115 /* 116 * null turnoff routine to be used for errors 117 * during protocol selection. 118 */ 119 int 120 turnoff(void) 121 { 122 return(0); 123 } 124