1/* $NetBSD$ */ 2 3/* 4 * Copyright (c) 1997-2014 Erez Zadok 5 * Copyright (c) 1990 Jan-Simon Pendry 6 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine 7 * Copyright (c) 1990 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Jan-Simon Pendry at Imperial College, London. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * 38 * File: am-utils/mk-amd-map/mk-amd-map.c 39 */ 40 41/* 42 * Convert a file map into an ndbm map 43 */ 44 45#ifdef HAVE_CONFIG_H 46# include <config.h> 47#endif /* HAVE_CONFIG_H */ 48#include <am_defs.h> 49 50/* (libdb version 2) uses .db extensions but an old dbm API */ 51/* check for libgdbm to distinguish it from linux systems */ 52#if defined(DBM_SUFFIX) && !defined(HAVE_LIBGDBM) 53# define HAVE_DB_SUFFIX 54#endif /* not defined(DBM_SUFFIX) && !defined(HAVE_LIBGDBM) */ 55 56#ifdef HAVE_MAP_NDBM 57 58static int 59store_data(voidp db, char *k, char *v) 60{ 61 datum key, val; 62 63 key.dptr = k; 64 val.dptr = v; 65 key.dsize = strlen(k) + 1; 66 val.dsize = strlen(v) + 1; 67 return dbm_store((DBM *) db, key, val, DBM_INSERT); 68} 69 70 71/* 72 * Read one line from file. 73 */ 74static int 75read_line(char *buf, int size, FILE *fp) 76{ 77 int done = 0; 78 79 do { 80 while (fgets(buf, size, fp)) { 81 int len = strlen(buf); 82 83 done += len; 84 if (len > 1 && buf[len - 2] == '\\' && buf[len - 1] == '\n') { 85 int ch; 86 buf += len - 2; 87 size -= len - 2; 88 *buf = '\n'; 89 buf[1] = '\0'; 90 91 /* 92 * Skip leading white space on next line 93 */ 94 while ((ch = getc(fp)) != EOF && isascii((unsigned char)ch) && isspace((unsigned char)ch)) ; 95 (void) ungetc(ch, fp); 96 } else { 97 return done; 98 } 99 } 100 } while (size > 0 && !feof(fp)); 101 102 return done; 103} 104 105 106/* 107 * Read through a map. 108 */ 109static int 110read_file(FILE *fp, char *map, voidp db) 111{ 112 char key_val[2048]; 113 int chuck = 0; 114 int line_no = 0; 115 int errs = 0; 116 117 while (read_line(key_val, 2048, fp)) { 118 char *kp; 119 char *cp; 120 char *hash; 121 int len = strlen(key_val); 122 123 line_no++; 124 125 /* 126 * Make sure we got the whole line 127 */ 128 if (key_val[len - 1] != '\n') { 129 fprintf(stderr, "line %d in \"%s\" is too long", line_no, map); 130 chuck = 1; 131 } else { 132 key_val[len - 1] = '\0'; 133 } 134 135 /* 136 * Strip comments 137 */ 138 hash = strchr(key_val, '#'); 139 if (hash) 140 *hash = '\0'; 141 142 /* 143 * Find start of key 144 */ 145 for (kp = key_val; *kp && isascii((unsigned char)*kp) && isspace((unsigned char)*kp); kp++) ; 146 147 /* 148 * Ignore blank lines 149 */ 150 if (!*kp) 151 goto again; 152 153 /* 154 * Find end of key 155 */ 156 for (cp = kp; *cp && (!isascii((unsigned char)*cp) || !isspace((unsigned char)*cp)); cp++) ; 157 158 /* 159 * Check whether key matches, or whether 160 * the entry is a wildcard entry. 161 */ 162 if (*cp) 163 *cp++ = '\0'; 164 while (*cp && isascii((unsigned char)*cp) && isspace((unsigned char)*cp)) 165 cp++; 166 if (*kp == '+') { 167 fprintf(stderr, "Can't interpolate %s\n", kp); 168 errs++; 169 } else if (*cp) { 170 if (db) { 171 if (store_data(db, kp, cp) < 0) { 172 fprintf(stderr, "Could store %s -> %s\n", kp, cp); 173 errs++; 174 } 175 } else { 176 printf("%s\t%s\n", kp, cp); 177 } 178 } else { 179 fprintf(stderr, "%s: line %d has no value field", map, line_no); 180 errs++; 181 } 182 183 again: 184 /* 185 * If the last read didn't get a whole line then 186 * throw away the remainder before continuing... 187 */ 188 if (chuck) { 189 while (fgets(key_val, sizeof(key_val), fp) && 190 !strchr(key_val, '\n')) ; 191 chuck = 0; 192 } 193 } 194 return errs; 195} 196 197 198static int 199remove_file(char *f) 200{ 201 if (unlink(f) < 0 && errno != ENOENT) 202 return -1; 203 204 return 0; 205} 206 207 208int 209main(int argc, char *argv[]) 210{ 211 FILE *mapf; /* the input file to read from */ 212 int error; 213 char *mapsrc; 214 DBM *db = NULL; 215 static char maptmp[] = "dbmXXXXXX"; 216#ifdef HAVE_DB_SUFFIX 217 char maptdb[16]; 218 char *map_name_db = (char *) NULL; 219#else /* not HAVE_DB_SUFFIX */ 220 char maptpag[16], maptdir[16]; 221 char *map_name_pag = (char *) NULL, *map_name_dir = (char *) NULL; 222#endif /* not HAVE_DB_SUFFIX */ 223 size_t l = 0; 224 char *sl; 225 int printit = 0; 226 int usage = 0; 227 int ch; 228 extern int optind; 229 230 /* test options */ 231 while ((ch = getopt(argc, argv, "p")) != -1) 232 switch (ch) { 233 case 'p': 234 printit = 1; 235 break; 236 default: 237 usage++; 238 break; 239 } 240 241 if (usage || optind != (argc - 1)) { 242 fputs("Usage: mk-amd-map [-p] file-map\n", stderr); 243 exit(1); 244 } 245 mapsrc = argv[optind]; 246 247 /* test if can get to the map directory */ 248 sl = strrchr(mapsrc, '/'); 249 if (sl) { 250 *sl = '\0'; 251 if (chdir(mapsrc) < 0) { 252 fputs("Can't chdir to ", stderr); 253 perror(mapsrc); 254 exit(1); 255 } 256 mapsrc = sl + 1; 257 } 258 259 /* open source file */ 260 mapf = fopen(mapsrc, "r"); 261 if (!mapf) { 262 fprintf(stderr, "cannot open source file "); 263 perror(mapsrc); 264 exit(1); 265 } 266 267#ifndef DEBUG 268 signal(SIGINT, SIG_IGN); 269#endif /* DEBUG */ 270 271 if (!printit) { 272 /* enough space for ".db" or ".pag" or ".dir" appended */ 273 l = strlen(mapsrc) + 5; 274#ifdef HAVE_DB_SUFFIX 275 map_name_db = (char *) malloc(l); 276 error = (map_name_db == NULL); 277#else /* not HAVE_DB_SUFFIX */ 278 map_name_pag = (char *) malloc(l); 279 map_name_dir = (char *) malloc(l); 280 error = (map_name_pag == NULL || map_name_dir == NULL); 281#endif /* not HAVE_DB_SUFFIX */ 282 if (error) { 283 perror("mk-amd-map: malloc"); 284 exit(1); 285 } 286 287#ifdef HAVE_MKSTEMP 288 { 289 /* 290 * XXX: hack to avoid compiler complaints about mktemp not being 291 * secure, since we have to do a dbm_open on this anyway. So use 292 * mkstemp if you can, and then close the fd, but we get a safe 293 * and unique file name. 294 */ 295 int dummyfd; 296 dummyfd = mkstemp(maptmp); 297 if (dummyfd >= 0) 298 close(dummyfd); 299 } 300#else /* not HAVE_MKSTEMP */ 301 mktemp(maptmp); 302#endif /* not HAVE_MKSTEMP */ 303 304 /* remove existing temps (if any) */ 305#ifdef HAVE_DB_SUFFIX 306 xsnprintf(maptdb, sizeof(maptdb), "%s.db", maptmp); 307 if (remove_file(maptdb) < 0) { 308 fprintf(stderr, "Can't remove existing temporary file; "); 309 perror(maptdb); 310 exit(1); 311 } 312#else /* not HAVE_DB_SUFFIX */ 313 xsnprintf(maptpag, sizeof(maptpag), "%s.pag", maptmp); 314 xsnprintf(maptdir, sizeof(maptdir), "%s.dir", maptmp); 315 if (remove_file(maptpag) < 0 || remove_file(maptdir) < 0) { 316 fprintf(stderr, "Can't remove existing temporary files; %s and ", maptpag); 317 perror(maptdir); 318 exit(1); 319 } 320#endif /* not HAVE_DB_SUFFIX */ 321 322 db = dbm_open(maptmp, O_RDWR|O_CREAT|O_EXCL, 0444); 323 if (!db) { 324 fprintf(stderr, "cannot initialize temporary database: %s", maptmp); 325 exit(1); 326 } 327 } 328 329 /* print db to stdout or to temp database */ 330 error = read_file(mapf, mapsrc, db); 331 fclose(mapf); 332 if (error) { 333 if (printit) 334 fprintf(stderr, "Error reading source file %s\n", mapsrc); 335 else 336 fprintf(stderr, "Error creating database map for %s\n", mapsrc); 337 exit(1); 338 } 339 340 if (printit) 341 exit(0); /* nothing more to do */ 342 343 /* if gets here, we wrote to a database */ 344 345 dbm_close(db); 346 /* all went well */ 347 348#ifdef HAVE_DB_SUFFIX 349 /* sizeof(map_name_db) is malloc'ed above */ 350 xsnprintf(map_name_db, l, "%s.db", mapsrc); 351 if (rename(maptdb, map_name_db) < 0) { 352 fprintf(stderr, "Couldn't rename %s to ", maptdb); 353 perror(map_name_db); 354 /* Throw away the temporary map */ 355 unlink(maptdb); 356 exit(1); 357 } 358#else /* not HAVE_DB_SUFFIX */ 359 /* sizeof(map_name_{pag,dir}) are malloc'ed above */ 360 xsnprintf(map_name_pag, l, "%s.pag", mapsrc); 361 xsnprintf(map_name_dir, l, "%s.dir", mapsrc); 362 if (rename(maptpag, map_name_pag) < 0) { 363 fprintf(stderr, "Couldn't rename %s to ", maptpag); 364 perror(map_name_pag); 365 /* Throw away the temporary map */ 366 unlink(maptpag); 367 unlink(maptdir); 368 exit(1); 369 } 370 if (rename(maptdir, map_name_dir) < 0) { 371 fprintf(stderr, "Couldn't rename %s to ", maptdir); 372 perror(map_name_dir); 373 /* remove the (presumably bad) .pag file */ 374 unlink(map_name_pag); 375 /* throw away remaining part of original map */ 376 unlink(map_name_dir); 377 /* throw away the temporary map */ 378 unlink(maptdir); 379 fprintf(stderr, "WARNING: existing map \"%s.{dir,pag}\" destroyed\n", 380 mapsrc); 381 exit(1); 382 } 383#endif /* not HAVE_DB_SUFFIX */ 384 385 exit(0); 386} 387 388#else /* not HAVE_MAP_NDBM */ 389 390int 391main() 392{ 393 fputs("mk-amd-map: This system does not support hashed database files\n", stderr); 394 exit(1); 395} 396 397#endif /* not HAVE_MAP_NDBM */ 398