1 /* $NetBSD: manconf.c,v 1.3 2003/08/07 11:15:11 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993, 1995 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #if HAVE_CONFIG_H 33 #include "config.h" 34 #endif 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)config.c 8.8 (Berkeley) 1/31/95"; 40 #else 41 #if defined(__RCSID) 42 __RCSID("$NetBSD: manconf.c,v 1.3 2003/08/07 11:15:11 agc Exp $"); 43 #endif 44 #endif 45 #endif /* not lint */ 46 47 #include <sys/types.h> 48 #include <sys/queue.h> 49 50 #include <ctype.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 57 #include "manconf.h" 58 #include "pathnames.h" 59 60 struct _head head; 61 62 /* 63 * config -- 64 * 65 * Read the configuration file and build a doubly linked 66 * list that looks like: 67 * 68 * tag1 <-> record <-> record <-> record 69 * | 70 * tag2 <-> record <-> record <-> record 71 */ 72 void 73 config(fname) 74 const char *fname; 75 { 76 TAG *tp; 77 FILE *cfp; 78 size_t len; 79 int lcnt; 80 char *p, *t, type; 81 82 if (fname == NULL) 83 fname = _PATH_MANCONF; 84 if ((cfp = fopen(fname, "r")) == NULL) 85 err(1, "%s", fname); 86 TAILQ_INIT(&head); 87 for (lcnt = 1; (p = fgetln(cfp, &len)) != NULL; ++lcnt) { 88 if (len == 1) /* Skip empty lines. */ 89 continue; 90 if (p[len - 1] != '\n') { /* Skip corrupted lines. */ 91 warnx("%s: line %d corrupted", fname, lcnt); 92 continue; 93 } 94 p[len - 1] = '\0'; /* Terminate the line. */ 95 96 /* Skip leading space. */ 97 for (; *p != '\0' && isspace((unsigned char)*p); ++p); 98 /* Skip empty/comment lines. */ 99 if (*p == '\0' || *p == '#') 100 continue; 101 /* Find first token. */ 102 for (t = p; *t && !isspace((unsigned char)*t); ++t); 103 if (*t == '\0') /* Need more than one token.*/ 104 continue; 105 *t = '\0'; 106 107 tp = getlist(p, 1); 108 109 /* 110 * Attach new records. Check to see if it is a 111 * section record or not. 112 */ 113 114 if (*p == '_') { /* not a section record */ 115 /* 116 * Special cases: _build and _crunch take the 117 * rest of the line as a single entry. 118 */ 119 if (!strcmp(p, "_build") || !strcmp(p, "_crunch")) { 120 /* 121 * The reason we're not just using 122 * strtok(3) for all of the parsing is 123 * so we don't get caught if a line 124 * has only a single token on it. 125 */ 126 while (*++t && isspace((unsigned char)*t)); 127 addentry(tp, t, 0); 128 } else { 129 for(++t; (p = strtok(t, " \t\n")) != NULL; 130 t = NULL) 131 addentry(tp, p, 0); 132 } 133 134 } else { /* section record */ 135 136 /* 137 * section entries can either be all absolute 138 * paths or all relative paths, but not both. 139 */ 140 type = (TAILQ_FIRST(&tp->list) != NULL) ? 141 *(TAILQ_FIRST(&tp->list)->s) : 0; 142 143 for (++t; (p = strtok(t, " \t\n")) != NULL; t = NULL) { 144 145 /* ensure an assigned type */ 146 if (type == 0) 147 type = *p; 148 149 /* check for illegal mix */ 150 if (*p != type) { 151 warnx("section %s: %s: invalid entry, does not match previous types", 152 tp->s, p); 153 warnx("man.conf cannot mix absolute and relative paths in an entry"); 154 continue; 155 } 156 addentry(tp, p, 0); 157 } 158 } 159 } 160 161 fclose(cfp); 162 } 163 164 /* 165 * getlist -- 166 * Return the linked list of entries for a tag if it exists. 167 * If it doesn't exist and create is non zero, create new tag 168 * and return that, otherwise return NULL. 169 */ 170 TAG * 171 getlist(name, create) 172 const char *name; 173 int create; 174 { 175 TAG *tp; 176 177 TAILQ_FOREACH(tp, &head, q) 178 if (!strcmp(name, tp->s)) 179 return (tp); 180 if (create) { 181 if ((tp = malloc(sizeof(TAG))) == NULL || 182 (tp->s = strdup(name)) == NULL) 183 err(1, "malloc"); 184 TAILQ_INIT(&tp->list); 185 TAILQ_INSERT_TAIL(&head, tp, q); 186 return (tp); 187 } else 188 return (NULL); 189 } 190 191 /* 192 * addentry -- 193 * add an entry to a list. 194 */ 195 void 196 addentry(tp, newent, head) 197 TAG *tp; 198 const char *newent; 199 int head; 200 { 201 ENTRY *ep; 202 203 if ((ep = malloc(sizeof(*ep))) == NULL || 204 (ep->s = strdup(newent)) == NULL) 205 err(1, "malloc"); 206 if (head) 207 TAILQ_INSERT_HEAD(&tp->list, ep, q); 208 else 209 TAILQ_INSERT_TAIL(&tp->list, ep, q); 210 } 211 212 #ifdef MANDEBUG 213 void 214 debug(l) 215 const char *l; 216 { 217 TAG *tp; 218 ENTRY *ep; 219 220 (void)printf("%s ===============\n", l); 221 TAILQ_FOREACH(tp, &head, q) { 222 printf("%s\n", tp->s); 223 TAILQ_FOREACH(ep, &tp->list, q) 224 printf("\t%s\n", ep->s); 225 } 226 } 227 #endif 228