1 /* $NetBSD: remote.c,v 1.21 2024/09/20 19:27:03 andvar 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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #ifndef lint 35 __COPYRIGHT("@(#) Copyright (c) 1992, 1993\ 36 The Regents of the University of California. All rights reserved."); 37 #endif /* not lint */ 38 39 #ifndef lint 40 #if 0 41 static char sccsid[] = "@(#)remote.c 8.1 (Berkeley) 6/6/93"; 42 #endif 43 __RCSID("$NetBSD: remote.c,v 1.21 2024/09/20 19:27:03 andvar Exp $"); 44 #endif /* not lint */ 45 46 #include "pathnames.h" 47 #include "tip.h" 48 49 /* 50 * Attributes to be gleaned from remote host description 51 * data base. 52 */ 53 static char **caps[] = { 54 &AT, &DV, &CM, &CU, &EL, &IE, &OE, &PN, &PR, &DI, 55 &ES, &EX, &FO, &RC, &RE, &PA 56 }; 57 58 static const char *capstrings[] = { 59 "at", "dv", "cm", "cu", "el", "ie", "oe", "pn", "pr", 60 "di", "es", "ex", "fo", "rc", "re", "pa", 0 61 }; 62 63 static const char *db_array[3] = { _PATH_REMOTE, 0, 0 }; 64 65 #define cgetflag(f) (cgetcap(bp, f, ':') != NULL) 66 67 static void getremcap(char *); 68 69 static char tiprecord[] = "tip.record"; 70 static char wspace[] = "\t\n\b\f"; 71 72 static void 73 getremcap(char *host) 74 { 75 const char **p; 76 char ***q; 77 char *bp; 78 char *rempath; 79 int status; 80 81 rempath = getenv("REMOTE"); 82 if (rempath != NULL) { 83 if (*rempath != '/') 84 /* we have an entry */ 85 (void)cgetset(rempath); 86 else { /* we have a path */ 87 db_array[1] = rempath; 88 db_array[2] = _PATH_REMOTE; 89 } 90 } 91 if ((status = cgetent(&bp, db_array, host)) < 0) { 92 if (DV || 93 (host[0] == '/' && access(DV = host, R_OK | W_OK) == 0)) { 94 CU = DV; 95 HO = host; 96 HW = 1; 97 DU = 0; 98 if (!BR) 99 BR = DEFBR; 100 FS = DEFFS; 101 return; 102 } 103 switch(status) { 104 case -1: 105 warnx("unknown host %s", host); 106 break; 107 case -2: 108 warnx("can't open host description file"); 109 break; 110 case -3: 111 warnx("possible reference loop in host " 112 "description file"); 113 114 break; 115 } 116 exit(3); 117 } 118 119 for (p = capstrings, q = caps; *p != NULL; p++, q++) 120 if (**q == NULL) 121 (void)cgetstr(bp, *p, *q); 122 if (!BR && (cgetnum(bp, "br", &BR) == -1)) 123 BR = DEFBR; 124 if (cgetnum(bp, "fs", &FS) == -1) 125 FS = DEFFS; 126 if (DU < 0) 127 DU = 0; 128 else 129 DU = cgetflag("du"); 130 if (DV == NULL) { 131 errx(3, "%s: missing device spec", host); 132 } 133 if (DU && CU == NULL) 134 CU = DV; 135 if (DU && PN == NULL) { 136 errx(3, "%s: missing phone number", host); 137 } 138 139 HD = cgetflag("hd"); 140 141 /* 142 * This effectively eliminates the "hw" attribute 143 * from the description file 144 */ 145 if (!HW) 146 HW = (CU == NULL) || (DU && strcmp(DV, CU) == 0); 147 HO = host; 148 /* 149 * see if uppercase mode should be turned on initially 150 */ 151 if (cgetflag("ra")) 152 setboolean(value(RAISE), 1); 153 if (cgetflag("ec")) 154 setboolean(value(ECHOCHECK), 1); 155 if (cgetflag("be")) 156 setboolean(value(BEAUTIFY), 1); 157 if (cgetflag("nb")) 158 setboolean(value(BEAUTIFY), 0); 159 if (cgetflag("sc")) 160 setboolean(value(SCRIPT), 1); 161 if (cgetflag("tb")) 162 setboolean(value(TABEXPAND), 1); 163 if (cgetflag("vb")) 164 setboolean(value(VERBOSE), 1); 165 if (cgetflag("nv")) 166 setboolean(value(VERBOSE), 0); 167 if (cgetflag("ta")) 168 setboolean(value(TAND), 1); 169 if (cgetflag("nt")) 170 setboolean(value(TAND), 0); 171 if (cgetflag("rw")) 172 setboolean(value(RAWFTP), 1); 173 if (cgetflag("hd")) 174 setboolean(value(HALFDUPLEX), 1); 175 if (cgetflag("dc")) 176 DC = 1; 177 if (cgetflag("hf")) 178 setboolean(value(HARDWAREFLOW), 1); 179 if (RE == NULL) 180 RE = tiprecord; 181 if (EX == NULL) 182 EX = wspace; 183 if (ES != NULL) 184 (void)vstring("es", ES); 185 if (FO != NULL) 186 (void)vstring("fo", FO); 187 if (PR != NULL) 188 (void)vstring("pr", PR); 189 if (RC != NULL) 190 (void)vstring("rc", RC); 191 if (cgetnum(bp, "dl", &DL) == -1) 192 DL = 0; 193 if (cgetnum(bp, "cl", &CL) == -1) 194 CL = 0; 195 if (cgetnum(bp, "et", &ET) == -1) 196 ET = 10; 197 } 198 199 char * 200 getremote(char *host) 201 { 202 char *cp; 203 static char *next; 204 static int lookedup = 0; 205 206 if (!lookedup) { 207 if (host == NULL && (host = getenv("HOST")) == NULL) { 208 errx(3, "no host specified"); 209 } 210 getremcap(host); 211 next = DV; 212 lookedup++; 213 } 214 /* 215 * We return a new device each time we're called (to allow 216 * a rotary action to be simulated) 217 */ 218 if (next == NULL) 219 return (NULL); 220 if ((cp = strchr(next, ',')) == NULL) { 221 DV = next; 222 next = NULL; 223 } else { 224 *cp++ = '\0'; 225 DV = next; 226 next = cp; 227 } 228 return (DV); 229 } 230
Indexes created Thu Sep 25 16:09:42 GMT 2025