1206156Sume/* $NetBSD: services_mkdb.c,v 1.14 2008/04/28 20:24:17 martin Exp $ */ 2206156Sume 3206156Sume/*- 4206156Sume * Copyright (c) 1999 The NetBSD Foundation, Inc. 5206156Sume * All rights reserved. 6206156Sume * 7206156Sume * This code is derived from software contributed to The NetBSD Foundation 8206156Sume * by Luke Mewburn and Christos Zoulas. 9206156Sume * 10206156Sume * Redistribution and use in source and binary forms, with or without 11206156Sume * modification, are permitted provided that the following conditions 12206156Sume * are met: 13206156Sume * 1. Redistributions of source code must retain the above copyright 14206156Sume * notice, this list of conditions and the following disclaimer. 15206156Sume * 2. Redistributions in binary form must reproduce the above copyright 16206156Sume * notice, this list of conditions and the following disclaimer in the 17206156Sume * documentation and/or other materials provided with the distribution. 18206156Sume * 19206156Sume * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20206156Sume * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21206156Sume * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22206156Sume * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23206156Sume * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24206156Sume * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25206156Sume * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26206156Sume * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27206156Sume * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28206156Sume * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29206156Sume * POSSIBILITY OF SUCH DAMAGE. 30206156Sume */ 31206156Sume 32206156Sume#include <sys/cdefs.h> 33206156Sume__FBSDID("$FreeBSD$"); 34206156Sume 35206156Sume#include <sys/param.h> 36206156Sume#include <sys/stat.h> 37206156Sume 38206156Sume#include <assert.h> 39206156Sume#include <db.h> 40206156Sume#include <err.h> 41206156Sume#include <fcntl.h> 42206156Sume#include <netdb.h> 43206156Sume#include <stdio.h> 44206156Sume#include <stdlib.h> 45206156Sume#include <string.h> 46206156Sume#include <unistd.h> 47293929Sgarga#include <libgen.h> 48206156Sume#include <libutil.h> 49206156Sume#include <ctype.h> 50206156Sume#include <errno.h> 51206156Sume#include <stringlist.h> 52206156Sume 53241777Sed#include "extern.h" 54241777Sed 55206156Sumestatic char tname[MAXPATHLEN]; 56206156Sume 57206156Sume#define PMASK 0xffff 58206156Sume#define PROTOMAX 5 59206156Sume 60206156Sumestatic void add(DB *, StringList *, size_t, const char *, size_t *, int); 61206156Sumestatic StringList ***parseservices(const char *, StringList *); 62206156Sumestatic void cleanup(void); 63206156Sumestatic void store(DB *, DBT *, DBT *, int); 64206156Sumestatic void killproto(DBT *); 65206156Sumestatic char *getstring(const char *, size_t, char **, const char *); 66206156Sumestatic size_t getprotoindex(StringList *, const char *); 67206156Sumestatic const char *getprotostr(StringList *, size_t); 68206156Sumestatic const char *mkaliases(StringList *, char *, size_t); 69206156Sumestatic void usage(void); 70206156Sume 71263028SjhbHASHINFO hinfo = { 72206156Sume .bsize = 256, 73206156Sume .ffactor = 4, 74206156Sume .nelem = 32768, 75206156Sume .cachesize = 1024, 76206156Sume .hash = NULL, 77206156Sume .lorder = 0 78206156Sume}; 79206156Sume 80206156Sume 81206156Sumeint 82206156Sumemain(int argc, char *argv[]) 83206156Sume{ 84206156Sume DB *db; 85206156Sume int ch; 86206156Sume const char *fname = _PATH_SERVICES; 87206156Sume const char *dbname = _PATH_SERVICES_DB; 88206156Sume int warndup = 1; 89206156Sume int unique = 0; 90206156Sume int otherflag = 0; 91263028Sjhb int byteorder = 0; 92206156Sume size_t cnt = 0; 93206156Sume StringList *sl, ***svc; 94206156Sume size_t port, proto; 95293929Sgarga char *dbname_dir; 96293929Sgarga int dbname_dir_fd = -1; 97206156Sume 98206156Sume setprogname(argv[0]); 99206156Sume 100263028Sjhb while ((ch = getopt(argc, argv, "blo:qu")) != -1) 101206156Sume switch (ch) { 102263028Sjhb case 'b': 103263028Sjhb case 'l': 104263028Sjhb if (byteorder != 0) 105263028Sjhb usage(); 106263028Sjhb byteorder = ch == 'b' ? 4321 : 1234; 107263028Sjhb break; 108206156Sume case 'q': 109206156Sume otherflag = 1; 110206156Sume warndup = 0; 111206156Sume break; 112206156Sume case 'o': 113206156Sume otherflag = 1; 114206156Sume dbname = optarg; 115206156Sume break; 116206156Sume case 'u': 117206156Sume unique++; 118206156Sume break; 119206156Sume case '?': 120206156Sume default: 121206156Sume usage(); 122206156Sume } 123206156Sume 124206156Sume argc -= optind; 125206156Sume argv += optind; 126206156Sume 127206156Sume if (argc > 1 || (unique && otherflag)) 128206156Sume usage(); 129206156Sume if (argc == 1) 130206156Sume fname = argv[0]; 131206156Sume 132263028Sjhb /* Set byte order. */ 133263028Sjhb hinfo.lorder = byteorder; 134263028Sjhb 135206156Sume if (unique) 136206156Sume uniq(fname); 137206156Sume 138206156Sume svc = parseservices(fname, sl = sl_init()); 139206156Sume 140206156Sume if (atexit(cleanup)) 141206156Sume err(1, "Cannot install exit handler"); 142206156Sume 143206156Sume (void)snprintf(tname, sizeof(tname), "%s.tmp", dbname); 144296424Sdwmalone db = dbopen(tname, O_RDWR | O_CREAT | O_EXCL, 145206156Sume (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH), DB_HASH, &hinfo); 146206156Sume if (!db) 147206156Sume err(1, "Error opening temporary database `%s'", tname); 148206156Sume 149206156Sume 150206156Sume for (port = 0; port < PMASK + 1; port++) { 151206156Sume if (svc[port] == NULL) 152206156Sume continue; 153206156Sume 154206156Sume for (proto = 0; proto < PROTOMAX; proto++) { 155206156Sume StringList *s; 156206156Sume if ((s = svc[port][proto]) == NULL) 157206156Sume continue; 158206156Sume add(db, s, port, getprotostr(sl, proto), &cnt, warndup); 159206156Sume } 160206156Sume 161206156Sume free(svc[port]); 162206156Sume } 163206156Sume 164206156Sume free(svc); 165206156Sume sl_free(sl, 1); 166206156Sume 167206156Sume if ((db->close)(db)) 168206156Sume err(1, "Error closing temporary database `%s'", tname); 169206156Sume 170293929Sgarga /* 171293929Sgarga * Make sure file is safe on disk. To improve performance we will call 172293929Sgarga * fsync() to the directory where file lies 173293929Sgarga */ 174293929Sgarga if (rename(tname, dbname) == -1 || 175293929Sgarga (dbname_dir = dirname(dbname)) == NULL || 176293929Sgarga (dbname_dir_fd = open(dbname_dir, O_RDONLY|O_DIRECTORY)) == -1 || 177293929Sgarga fsync(dbname_dir_fd) != 0) { 178293929Sgarga if (dbname_dir_fd != -1) 179293929Sgarga close(dbname_dir_fd); 180206156Sume err(1, "Cannot rename `%s' to `%s'", tname, dbname); 181293929Sgarga } 182206156Sume 183293929Sgarga if (dbname_dir_fd != -1) 184293929Sgarga close(dbname_dir_fd); 185293929Sgarga 186206156Sume return 0; 187206156Sume} 188206156Sume 189206156Sumestatic void 190206156Sumeadd(DB *db, StringList *sl, size_t port, const char *proto, size_t *cnt, 191206156Sume int warndup) 192206156Sume{ 193206156Sume size_t i; 194206156Sume char keyb[BUFSIZ], datab[BUFSIZ], abuf[BUFSIZ]; 195206156Sume DBT data, key; 196206156Sume key.data = keyb; 197206156Sume data.data = datab; 198206156Sume 199206156Sume#ifdef DEBUG 200206156Sume (void)printf("add %s %zu %s [ ", sl->sl_str[0], port, proto); 201206156Sume for (i = 1; i < sl->sl_cur; i++) 202206156Sume (void)printf("%s ", sl->sl_str[i]); 203206156Sume (void)printf("]\n"); 204206156Sume#endif 205206156Sume 206206156Sume /* key `indirect key', data `full line' */ 207206156Sume data.size = snprintf(datab, sizeof(datab), "%zu", (*cnt)++) + 1; 208206156Sume key.size = snprintf(keyb, sizeof(keyb), "%s %zu/%s %s", 209206156Sume sl->sl_str[0], port, proto, mkaliases(sl, abuf, sizeof(abuf))) + 1; 210206156Sume store(db, &data, &key, warndup); 211206156Sume 212206156Sume /* key `\377port/proto', data = `indirect key' */ 213206156Sume key.size = snprintf(keyb, sizeof(keyb), "\377%zu/%s", 214206156Sume port, proto) + 1; 215206156Sume store(db, &key, &data, warndup); 216206156Sume 217206156Sume /* key `\377port', data = `indirect key' */ 218206156Sume killproto(&key); 219206156Sume store(db, &key, &data, warndup); 220206156Sume 221206156Sume /* add references for service and all aliases */ 222206156Sume for (i = 0; i < sl->sl_cur; i++) { 223206156Sume /* key `\376service/proto', data = `indirect key' */ 224206156Sume key.size = snprintf(keyb, sizeof(keyb), "\376%s/%s", 225206156Sume sl->sl_str[i], proto) + 1; 226206156Sume store(db, &key, &data, warndup); 227206156Sume 228206156Sume /* key `\376service', data = `indirect key' */ 229206156Sume killproto(&key); 230206156Sume store(db, &key, &data, warndup); 231206156Sume } 232206156Sume sl_free(sl, 1); 233206156Sume} 234206156Sume 235206156Sumestatic StringList *** 236206156Sumeparseservices(const char *fname, StringList *sl) 237206156Sume{ 238206156Sume size_t len, line, pindex; 239206156Sume FILE *fp; 240206156Sume StringList ***svc, *s; 241206156Sume char *p, *ep; 242206156Sume 243206156Sume if ((fp = fopen(fname, "r")) == NULL) 244206156Sume err(1, "Cannot open `%s'", fname); 245206156Sume 246206156Sume line = 0; 247206156Sume if ((svc = calloc(PMASK + 1, sizeof(StringList **))) == NULL) 248206163Sume err(1, "Cannot allocate %zu bytes", (size_t)(PMASK + 1)); 249206156Sume 250206156Sume /* XXX: change NULL to "\0\0#" when fparseln fixed */ 251206156Sume for (; (p = fparseln(fp, &len, &line, NULL, 0)) != NULL; free(p)) { 252206156Sume char *name, *port, *proto, *aliases, *cp, *alias; 253206156Sume unsigned long pnum; 254206156Sume 255206156Sume if (len == 0) 256206156Sume continue; 257206156Sume 258206156Sume for (cp = p; *cp && isspace((unsigned char)*cp); cp++) 259206156Sume continue; 260206156Sume 261206156Sume if (*cp == '\0' || *cp == '#') 262206156Sume continue; 263206156Sume 264206156Sume if ((name = getstring(fname, line, &cp, "name")) == NULL) 265206156Sume continue; 266206156Sume 267206156Sume if ((port = getstring(fname, line, &cp, "port")) == NULL) 268206156Sume continue; 269206156Sume 270206156Sume if (cp) { 271206156Sume for (aliases = cp; *cp && *cp != '#'; cp++) 272206156Sume continue; 273206156Sume 274206156Sume if (*cp) 275206156Sume *cp = '\0'; 276206156Sume } else 277206156Sume aliases = NULL; 278206156Sume 279206156Sume proto = strchr(port, '/'); 280206156Sume if (proto == NULL || proto[1] == '\0') { 281206156Sume warnx("%s, %zu: no protocol found", fname, line); 282206156Sume continue; 283206156Sume } 284206156Sume *proto++ = '\0'; 285206156Sume 286206156Sume errno = 0; 287206156Sume pnum = strtoul(port, &ep, 0); 288206156Sume if (*port == '\0' || *ep != '\0') { 289206156Sume warnx("%s, %zu: invalid port `%s'", fname, line, port); 290206156Sume continue; 291206156Sume } 292206156Sume if ((errno == ERANGE && pnum == ULONG_MAX) || pnum > PMASK) { 293206156Sume warnx("%s, %zu: port too big `%s'", fname, line, port); 294206156Sume continue; 295206156Sume } 296206156Sume 297206156Sume if (svc[pnum] == NULL) { 298206156Sume svc[pnum] = calloc(PROTOMAX, sizeof(StringList *)); 299206156Sume if (svc[pnum] == NULL) 300206163Sume err(1, "Cannot allocate %zu bytes", 301206163Sume (size_t)PROTOMAX); 302206156Sume } 303206156Sume 304206156Sume pindex = getprotoindex(sl, proto); 305206156Sume if (svc[pnum][pindex] == NULL) 306206156Sume s = svc[pnum][pindex] = sl_init(); 307206156Sume else 308206156Sume s = svc[pnum][pindex]; 309206156Sume 310206156Sume /* build list of aliases */ 311206156Sume if (sl_find(s, name) == NULL) { 312206159Sume char *p2; 313206156Sume 314206159Sume if ((p2 = strdup(name)) == NULL) 315206156Sume err(1, "Cannot copy string"); 316206159Sume (void)sl_add(s, p2); 317206156Sume } 318206156Sume 319206156Sume if (aliases) { 320206156Sume while ((alias = strsep(&aliases, " \t")) != NULL) { 321206156Sume if (alias[0] == '\0') 322206156Sume continue; 323206156Sume if (sl_find(s, alias) == NULL) { 324206159Sume char *p2; 325206156Sume 326206159Sume if ((p2 = strdup(alias)) == NULL) 327206156Sume err(1, "Cannot copy string"); 328206159Sume (void)sl_add(s, p2); 329206156Sume } 330206156Sume } 331206156Sume } 332206156Sume } 333206156Sume (void)fclose(fp); 334206156Sume return svc; 335206156Sume} 336206156Sume 337206156Sume/* 338206156Sume * cleanup(): Remove temporary files upon exit 339206156Sume */ 340206156Sumestatic void 341206156Sumecleanup(void) 342206156Sume{ 343206156Sume if (tname[0]) 344206156Sume (void)unlink(tname); 345206156Sume} 346206156Sume 347206156Sumestatic char * 348206156Sumegetstring(const char *fname, size_t line, char **cp, const char *tag) 349206156Sume{ 350206156Sume char *str; 351206156Sume 352206156Sume while ((str = strsep(cp, " \t")) != NULL && *str == '\0') 353206156Sume continue; 354206156Sume 355206156Sume if (str == NULL) 356206156Sume warnx("%s, %zu: no %s found", fname, line, tag); 357206156Sume 358206156Sume return str; 359206156Sume} 360206156Sume 361206156Sumestatic void 362206156Sumekillproto(DBT *key) 363206156Sume{ 364206156Sume char *p, *d = key->data; 365206156Sume 366206156Sume if ((p = strchr(d, '/')) == NULL) 367206156Sume abort(); 368206156Sume *p++ = '\0'; 369206156Sume key->size = p - d; 370206156Sume} 371206156Sume 372206156Sumestatic void 373206156Sumestore(DB *db, DBT *key, DBT *data, int warndup) 374206156Sume{ 375206156Sume#ifdef DEBUG 376206156Sume int k = key->size - 1; 377206156Sume int d = data->size - 1; 378206156Sume (void)printf("store [%*.*s] [%*.*s]\n", 379206156Sume k, k, (char *)key->data + 1, 380206156Sume d, d, (char *)data->data + 1); 381206156Sume#endif 382206156Sume switch ((db->put)(db, key, data, R_NOOVERWRITE)) { 383206156Sume case 0: 384206156Sume break; 385206156Sume case 1: 386206156Sume if (warndup) 387206156Sume warnx("duplicate service `%s'", 388206156Sume &((char *)key->data)[1]); 389206156Sume break; 390206156Sume case -1: 391206156Sume err(1, "put"); 392206156Sume break; 393206156Sume default: 394206156Sume abort(); 395206156Sume break; 396206156Sume } 397206156Sume} 398206156Sume 399206156Sumestatic size_t 400206156Sumegetprotoindex(StringList *sl, const char *str) 401206156Sume{ 402206156Sume size_t i; 403206156Sume char *p; 404206156Sume 405206156Sume for (i= 0; i < sl->sl_cur; i++) 406206156Sume if (strcmp(sl->sl_str[i], str) == 0) 407206156Sume return i; 408206156Sume 409206156Sume if (i == PROTOMAX) 410206156Sume errx(1, "Ran out of protocols adding `%s';" 411206156Sume " recompile with larger PROTOMAX", str); 412206156Sume if ((p = strdup(str)) == NULL) 413206156Sume err(1, "Cannot copy string"); 414206156Sume (void)sl_add(sl, p); 415206156Sume return i; 416206156Sume} 417206156Sume 418206156Sumestatic const char * 419206156Sumegetprotostr(StringList *sl, size_t i) 420206156Sume{ 421206156Sume assert(i < sl->sl_cur); 422206156Sume return sl->sl_str[i]; 423206156Sume} 424206156Sume 425206156Sumestatic const char * 426206156Sumemkaliases(StringList *sl, char *buf, size_t len) 427206156Sume{ 428206156Sume size_t nc, i, pos; 429206156Sume 430206156Sume buf[0] = 0; 431206156Sume for (i = 1, pos = 0; i < sl->sl_cur; i++) { 432206156Sume nc = strlcpy(buf + pos, sl->sl_str[i], len); 433206156Sume if (nc >= len) 434206156Sume goto out; 435206156Sume pos += nc; 436206156Sume len -= nc; 437206156Sume nc = strlcpy(buf + pos, " ", len); 438206156Sume if (nc >= len) 439206156Sume goto out; 440206156Sume pos += nc; 441206156Sume len -= nc; 442206156Sume } 443206156Sume return buf; 444206156Sumeout: 445206156Sume warn("aliases for `%s' truncated", sl->sl_str[0]); 446206156Sume return buf; 447206156Sume} 448206156Sume 449206156Sumestatic void 450206156Sumeusage(void) 451206156Sume{ 452263028Sjhb (void)fprintf(stderr, 453263028Sjhb "Usage:\t%s [-b | -l] [-q] [-o <db>] [<servicefile>]\n" 454206156Sume "\t%s -u [<servicefile>]\n", getprogname(), getprogname()); 455206156Sume exit(1); 456206156Sume} 457