1 /* $NetBSD: remote.c,v 1.8 1998/08/25 20:59:41 ross Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __COPYRIGHT("@(#) Copyright (c) 1992, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"); 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)remote.c 8.1 (Berkeley) 6/6/93"; 46 #endif 47 __RCSID("$NetBSD: remote.c,v 1.8 1998/08/25 20:59:41 ross Exp $"); 48 #endif /* not lint */ 49 50 #include "pathnames.h" 51 #include "tip.h" 52 53 /* 54 * Attributes to be gleened from remote host description 55 * data base. 56 */ 57 static char **caps[] = { 58 &AT, &DV, &CM, &CU, &EL, &IE, &OE, &PN, &PR, &DI, 59 &ES, &EX, &FO, &RC, &RE, &PA 60 }; 61 62 static char *capstrings[] = { 63 "at", "dv", "cm", "cu", "el", "ie", "oe", "pn", "pr", 64 "di", "es", "ex", "fo", "rc", "re", "pa", 0 65 }; 66 67 static char *db_array[3] = { _PATH_REMOTE, 0, 0 }; 68 69 #define cgetflag(f) (cgetcap(bp, f, ':') != NULL) 70 71 static void getremcap __P((char *)); 72 73 static void 74 getremcap(host) 75 char *host; 76 { 77 char **p, ***q; 78 char *bp; 79 char *rempath; 80 int stat; 81 82 rempath = getenv("REMOTE"); 83 if (rempath != NULL) { 84 if (*rempath != '/') 85 /* we have an entry */ 86 cgetset(rempath); 87 else { /* we have a path */ 88 db_array[1] = rempath; 89 db_array[2] = _PATH_REMOTE; 90 } 91 } 92 if ((stat = cgetent(&bp, db_array, host)) < 0) { 93 if (DV || 94 (host[0] == '/' && access(DV = host, R_OK | W_OK) == 0)) { 95 CU = DV; 96 HO = host; 97 HW = 1; 98 DU = 0; 99 if (!BR) 100 BR = DEFBR; 101 FS = DEFFS; 102 return; 103 } 104 switch(stat) { 105 case -1: 106 fprintf(stderr, "tip: unknown host %s\n", host); 107 break; 108 case -2: 109 fprintf(stderr, 110 "tip: can't open host description file\n"); 111 break; 112 case -3: 113 fprintf(stderr, 114 "tip: possible reference loop in host description file\n"); 115 break; 116 } 117 exit(3); 118 } 119 120 for (p = capstrings, q = caps; *p != NULL; p++, q++) 121 if (**q == NULL) 122 cgetstr(bp, *p, *q); 123 if (!BR && (cgetnum(bp, "br", &BR) == -1)) 124 BR = DEFBR; 125 if (cgetnum(bp, "fs", &FS) == -1) 126 FS = DEFFS; 127 if (DU < 0) 128 DU = 0; 129 else 130 DU = cgetflag("du"); 131 if (DV == NULL) { 132 fprintf(stderr, "%s: missing device spec\n", host); 133 exit(3); 134 } 135 if (DU && CU == NULL) 136 CU = DV; 137 if (DU && PN == NULL) { 138 fprintf(stderr, "%s: missing phone number\n", host); 139 exit(3); 140 } 141 142 HD = cgetflag("hd"); 143 144 /* 145 * This effectively eliminates the "hw" attribute 146 * from the description file 147 */ 148 if (!HW) 149 HW = (CU == NULL) || (DU && equal(DV, CU)); 150 HO = host; 151 /* 152 * see if uppercase mode should be turned on initially 153 */ 154 if (cgetflag("ra")) 155 setboolean(value(RAISE), 1); 156 if (cgetflag("ec")) 157 setboolean(value(ECHOCHECK), 1); 158 if (cgetflag("be")) 159 setboolean(value(BEAUTIFY), 1); 160 if (cgetflag("nb")) 161 setboolean(value(BEAUTIFY), 0); 162 if (cgetflag("sc")) 163 setboolean(value(SCRIPT), 1); 164 if (cgetflag("tb")) 165 setboolean(value(TABEXPAND), 1); 166 if (cgetflag("vb")) 167 setboolean(value(VERBOSE), 1); 168 if (cgetflag("nv")) 169 setboolean(value(VERBOSE), 0); 170 if (cgetflag("ta")) 171 setboolean(value(TAND), 1); 172 if (cgetflag("nt")) 173 setboolean(value(TAND), 0); 174 if (cgetflag("rw")) 175 setboolean(value(RAWFTP), 1); 176 if (cgetflag("hd")) 177 setboolean(value(HALFDUPLEX), 1); 178 if (cgetflag("dc")) 179 DC = 1; 180 if (RE == NULL) 181 RE = (char *)"tip.record"; 182 if (EX == NULL) 183 EX = (char *)"\t\n\b\f"; 184 if (ES != NULL) 185 vstring("es", ES); 186 if (FO != NULL) 187 vstring("fo", FO); 188 if (PR != NULL) 189 vstring("pr", PR); 190 if (RC != NULL) 191 vstring("rc", RC); 192 if (cgetnum(bp, "dl", &DL) == -1) 193 DL = 0; 194 if (cgetnum(bp, "cl", &CL) == -1) 195 CL = 0; 196 if (cgetnum(bp, "et", &ET) == -1) 197 ET = 10; 198 } 199 200 char * 201 getremote(host) 202 char *host; 203 { 204 char *cp; 205 static char *next; 206 static int lookedup = 0; 207 208 if (!lookedup) { 209 if (host == NULL && (host = getenv("HOST")) == NULL) { 210 fprintf(stderr, "tip: no host specified\n"); 211 exit(3); 212 } 213 getremcap(host); 214 next = DV; 215 lookedup++; 216 } 217 /* 218 * We return a new device each time we're called (to allow 219 * a rotary action to be simulated) 220 */ 221 if (next == NULL) 222 return (NULL); 223 if ((cp = strchr(next, ',')) == NULL) { 224 DV = next; 225 next = NULL; 226 } else { 227 *cp++ = '\0'; 228 DV = next; 229 next = cp; 230 } 231 return (DV); 232 } 233