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> 47206156Sume#include <libutil.h> 48206156Sume#include <ctype.h> 49206156Sume#include <errno.h> 50206156Sume#include <stringlist.h> 51206156Sume 52206156Sumestatic char tname[MAXPATHLEN]; 53206156Sume 54206156Sume#define PMASK 0xffff 55206156Sume#define PROTOMAX 5 56206156Sume 57206156Sumeextern void uniq(const char *); 58206156Sume 59206156Sumestatic void add(DB *, StringList *, size_t, const char *, size_t *, int); 60206156Sumestatic StringList ***parseservices(const char *, StringList *); 61206156Sumestatic void cleanup(void); 62206156Sumestatic void store(DB *, DBT *, DBT *, int); 63206156Sumestatic void killproto(DBT *); 64206156Sumestatic char *getstring(const char *, size_t, char **, const char *); 65206156Sumestatic size_t getprotoindex(StringList *, const char *); 66206156Sumestatic const char *getprotostr(StringList *, size_t); 67206156Sumestatic const char *mkaliases(StringList *, char *, size_t); 68206156Sumestatic void usage(void); 69206156Sume 70263028SjhbHASHINFO hinfo = { 71206156Sume .bsize = 256, 72206156Sume .ffactor = 4, 73206156Sume .nelem = 32768, 74206156Sume .cachesize = 1024, 75206156Sume .hash = NULL, 76206156Sume .lorder = 0 77206156Sume}; 78206156Sume 79206156Sume 80206156Sumeint 81206156Sumemain(int argc, char *argv[]) 82206156Sume{ 83206156Sume DB *db; 84206156Sume int ch; 85206156Sume const char *fname = _PATH_SERVICES; 86206156Sume const char *dbname = _PATH_SERVICES_DB; 87206156Sume int warndup = 1; 88206156Sume int unique = 0; 89206156Sume int otherflag = 0; 90263028Sjhb int byteorder = 0; 91206156Sume size_t cnt = 0; 92206156Sume StringList *sl, ***svc; 93206156Sume size_t port, proto; 94206156Sume 95206156Sume setprogname(argv[0]); 96206156Sume 97263028Sjhb while ((ch = getopt(argc, argv, "blo:qu")) != -1) 98206156Sume switch (ch) { 99263028Sjhb case 'b': 100263028Sjhb case 'l': 101263028Sjhb if (byteorder != 0) 102263028Sjhb usage(); 103263028Sjhb byteorder = ch == 'b' ? 4321 : 1234; 104263028Sjhb break; 105206156Sume case 'q': 106206156Sume otherflag = 1; 107206156Sume warndup = 0; 108206156Sume break; 109206156Sume case 'o': 110206156Sume otherflag = 1; 111206156Sume dbname = optarg; 112206156Sume break; 113206156Sume case 'u': 114206156Sume unique++; 115206156Sume break; 116206156Sume case '?': 117206156Sume default: 118206156Sume usage(); 119206156Sume } 120206156Sume 121206156Sume argc -= optind; 122206156Sume argv += optind; 123206156Sume 124206156Sume if (argc > 1 || (unique && otherflag)) 125206156Sume usage(); 126206156Sume if (argc == 1) 127206156Sume fname = argv[0]; 128206156Sume 129263028Sjhb /* Set byte order. */ 130263028Sjhb hinfo.lorder = byteorder; 131263028Sjhb 132206156Sume if (unique) 133206156Sume uniq(fname); 134206156Sume 135206156Sume svc = parseservices(fname, sl = sl_init()); 136206156Sume 137206156Sume if (atexit(cleanup)) 138206156Sume err(1, "Cannot install exit handler"); 139206156Sume 140206156Sume (void)snprintf(tname, sizeof(tname), "%s.tmp", dbname); 141206156Sume db = dbopen(tname, O_RDWR | O_CREAT | O_EXCL, 142206156Sume (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH), DB_HASH, &hinfo); 143206156Sume if (!db) 144206156Sume err(1, "Error opening temporary database `%s'", tname); 145206156Sume 146206156Sume 147206156Sume for (port = 0; port < PMASK + 1; port++) { 148206156Sume if (svc[port] == NULL) 149206156Sume continue; 150206156Sume 151206156Sume for (proto = 0; proto < PROTOMAX; proto++) { 152206156Sume StringList *s; 153206156Sume if ((s = svc[port][proto]) == NULL) 154206156Sume continue; 155206156Sume add(db, s, port, getprotostr(sl, proto), &cnt, warndup); 156206156Sume } 157206156Sume 158206156Sume free(svc[port]); 159206156Sume } 160206156Sume 161206156Sume free(svc); 162206156Sume sl_free(sl, 1); 163206156Sume 164206156Sume if ((db->close)(db)) 165206156Sume err(1, "Error closing temporary database `%s'", tname); 166206156Sume 167206156Sume if (rename(tname, dbname) == -1) 168206156Sume err(1, "Cannot rename `%s' to `%s'", tname, dbname); 169206156Sume 170206156Sume return 0; 171206156Sume} 172206156Sume 173206156Sumestatic void 174206156Sumeadd(DB *db, StringList *sl, size_t port, const char *proto, size_t *cnt, 175206156Sume int warndup) 176206156Sume{ 177206156Sume size_t i; 178206156Sume char keyb[BUFSIZ], datab[BUFSIZ], abuf[BUFSIZ]; 179206156Sume DBT data, key; 180206156Sume key.data = keyb; 181206156Sume data.data = datab; 182206156Sume 183206156Sume#ifdef DEBUG 184206156Sume (void)printf("add %s %zu %s [ ", sl->sl_str[0], port, proto); 185206156Sume for (i = 1; i < sl->sl_cur; i++) 186206156Sume (void)printf("%s ", sl->sl_str[i]); 187206156Sume (void)printf("]\n"); 188206156Sume#endif 189206156Sume 190206156Sume /* key `indirect key', data `full line' */ 191206156Sume data.size = snprintf(datab, sizeof(datab), "%zu", (*cnt)++) + 1; 192206156Sume key.size = snprintf(keyb, sizeof(keyb), "%s %zu/%s %s", 193206156Sume sl->sl_str[0], port, proto, mkaliases(sl, abuf, sizeof(abuf))) + 1; 194206156Sume store(db, &data, &key, warndup); 195206156Sume 196206156Sume /* key `\377port/proto', data = `indirect key' */ 197206156Sume key.size = snprintf(keyb, sizeof(keyb), "\377%zu/%s", 198206156Sume port, proto) + 1; 199206156Sume store(db, &key, &data, warndup); 200206156Sume 201206156Sume /* key `\377port', data = `indirect key' */ 202206156Sume killproto(&key); 203206156Sume store(db, &key, &data, warndup); 204206156Sume 205206156Sume /* add references for service and all aliases */ 206206156Sume for (i = 0; i < sl->sl_cur; i++) { 207206156Sume /* key `\376service/proto', data = `indirect key' */ 208206156Sume key.size = snprintf(keyb, sizeof(keyb), "\376%s/%s", 209206156Sume sl->sl_str[i], proto) + 1; 210206156Sume store(db, &key, &data, warndup); 211206156Sume 212206156Sume /* key `\376service', data = `indirect key' */ 213206156Sume killproto(&key); 214206156Sume store(db, &key, &data, warndup); 215206156Sume } 216206156Sume sl_free(sl, 1); 217206156Sume} 218206156Sume 219206156Sumestatic StringList *** 220206156Sumeparseservices(const char *fname, StringList *sl) 221206156Sume{ 222206156Sume size_t len, line, pindex; 223206156Sume FILE *fp; 224206156Sume StringList ***svc, *s; 225206156Sume char *p, *ep; 226206156Sume 227206156Sume if ((fp = fopen(fname, "r")) == NULL) 228206156Sume err(1, "Cannot open `%s'", fname); 229206156Sume 230206156Sume line = 0; 231206156Sume if ((svc = calloc(PMASK + 1, sizeof(StringList **))) == NULL) 232206163Sume err(1, "Cannot allocate %zu bytes", (size_t)(PMASK + 1)); 233206156Sume 234206156Sume /* XXX: change NULL to "\0\0#" when fparseln fixed */ 235206156Sume for (; (p = fparseln(fp, &len, &line, NULL, 0)) != NULL; free(p)) { 236206156Sume char *name, *port, *proto, *aliases, *cp, *alias; 237206156Sume unsigned long pnum; 238206156Sume 239206156Sume if (len == 0) 240206156Sume continue; 241206156Sume 242206156Sume for (cp = p; *cp && isspace((unsigned char)*cp); cp++) 243206156Sume continue; 244206156Sume 245206156Sume if (*cp == '\0' || *cp == '#') 246206156Sume continue; 247206156Sume 248206156Sume if ((name = getstring(fname, line, &cp, "name")) == NULL) 249206156Sume continue; 250206156Sume 251206156Sume if ((port = getstring(fname, line, &cp, "port")) == NULL) 252206156Sume continue; 253206156Sume 254206156Sume if (cp) { 255206156Sume for (aliases = cp; *cp && *cp != '#'; cp++) 256206156Sume continue; 257206156Sume 258206156Sume if (*cp) 259206156Sume *cp = '\0'; 260206156Sume } else 261206156Sume aliases = NULL; 262206156Sume 263206156Sume proto = strchr(port, '/'); 264206156Sume if (proto == NULL || proto[1] == '\0') { 265206156Sume warnx("%s, %zu: no protocol found", fname, line); 266206156Sume continue; 267206156Sume } 268206156Sume *proto++ = '\0'; 269206156Sume 270206156Sume errno = 0; 271206156Sume pnum = strtoul(port, &ep, 0); 272206156Sume if (*port == '\0' || *ep != '\0') { 273206156Sume warnx("%s, %zu: invalid port `%s'", fname, line, port); 274206156Sume continue; 275206156Sume } 276206156Sume if ((errno == ERANGE && pnum == ULONG_MAX) || pnum > PMASK) { 277206156Sume warnx("%s, %zu: port too big `%s'", fname, line, port); 278206156Sume continue; 279206156Sume } 280206156Sume 281206156Sume if (svc[pnum] == NULL) { 282206156Sume svc[pnum] = calloc(PROTOMAX, sizeof(StringList *)); 283206156Sume if (svc[pnum] == NULL) 284206163Sume err(1, "Cannot allocate %zu bytes", 285206163Sume (size_t)PROTOMAX); 286206156Sume } 287206156Sume 288206156Sume pindex = getprotoindex(sl, proto); 289206156Sume if (svc[pnum][pindex] == NULL) 290206156Sume s = svc[pnum][pindex] = sl_init(); 291206156Sume else 292206156Sume s = svc[pnum][pindex]; 293206156Sume 294206156Sume /* build list of aliases */ 295206156Sume if (sl_find(s, name) == NULL) { 296206159Sume char *p2; 297206156Sume 298206159Sume if ((p2 = strdup(name)) == NULL) 299206156Sume err(1, "Cannot copy string"); 300206159Sume (void)sl_add(s, p2); 301206156Sume } 302206156Sume 303206156Sume if (aliases) { 304206156Sume while ((alias = strsep(&aliases, " \t")) != NULL) { 305206156Sume if (alias[0] == '\0') 306206156Sume continue; 307206156Sume if (sl_find(s, alias) == NULL) { 308206159Sume char *p2; 309206156Sume 310206159Sume if ((p2 = strdup(alias)) == NULL) 311206156Sume err(1, "Cannot copy string"); 312206159Sume (void)sl_add(s, p2); 313206156Sume } 314206156Sume } 315206156Sume } 316206156Sume } 317206156Sume (void)fclose(fp); 318206156Sume return svc; 319206156Sume} 320206156Sume 321206156Sume/* 322206156Sume * cleanup(): Remove temporary files upon exit 323206156Sume */ 324206156Sumestatic void 325206156Sumecleanup(void) 326206156Sume{ 327206156Sume if (tname[0]) 328206156Sume (void)unlink(tname); 329206156Sume} 330206156Sume 331206156Sumestatic char * 332206156Sumegetstring(const char *fname, size_t line, char **cp, const char *tag) 333206156Sume{ 334206156Sume char *str; 335206156Sume 336206156Sume while ((str = strsep(cp, " \t")) != NULL && *str == '\0') 337206156Sume continue; 338206156Sume 339206156Sume if (str == NULL) 340206156Sume warnx("%s, %zu: no %s found", fname, line, tag); 341206156Sume 342206156Sume return str; 343206156Sume} 344206156Sume 345206156Sumestatic void 346206156Sumekillproto(DBT *key) 347206156Sume{ 348206156Sume char *p, *d = key->data; 349206156Sume 350206156Sume if ((p = strchr(d, '/')) == NULL) 351206156Sume abort(); 352206156Sume *p++ = '\0'; 353206156Sume key->size = p - d; 354206156Sume} 355206156Sume 356206156Sumestatic void 357206156Sumestore(DB *db, DBT *key, DBT *data, int warndup) 358206156Sume{ 359206156Sume#ifdef DEBUG 360206156Sume int k = key->size - 1; 361206156Sume int d = data->size - 1; 362206156Sume (void)printf("store [%*.*s] [%*.*s]\n", 363206156Sume k, k, (char *)key->data + 1, 364206156Sume d, d, (char *)data->data + 1); 365206156Sume#endif 366206156Sume switch ((db->put)(db, key, data, R_NOOVERWRITE)) { 367206156Sume case 0: 368206156Sume break; 369206156Sume case 1: 370206156Sume if (warndup) 371206156Sume warnx("duplicate service `%s'", 372206156Sume &((char *)key->data)[1]); 373206156Sume break; 374206156Sume case -1: 375206156Sume err(1, "put"); 376206156Sume break; 377206156Sume default: 378206156Sume abort(); 379206156Sume break; 380206156Sume } 381206156Sume} 382206156Sume 383206156Sumestatic size_t 384206156Sumegetprotoindex(StringList *sl, const char *str) 385206156Sume{ 386206156Sume size_t i; 387206156Sume char *p; 388206156Sume 389206156Sume for (i= 0; i < sl->sl_cur; i++) 390206156Sume if (strcmp(sl->sl_str[i], str) == 0) 391206156Sume return i; 392206156Sume 393206156Sume if (i == PROTOMAX) 394206156Sume errx(1, "Ran out of protocols adding `%s';" 395206156Sume " recompile with larger PROTOMAX", str); 396206156Sume if ((p = strdup(str)) == NULL) 397206156Sume err(1, "Cannot copy string"); 398206156Sume (void)sl_add(sl, p); 399206156Sume return i; 400206156Sume} 401206156Sume 402206156Sumestatic const char * 403206156Sumegetprotostr(StringList *sl, size_t i) 404206156Sume{ 405206156Sume assert(i < sl->sl_cur); 406206156Sume return sl->sl_str[i]; 407206156Sume} 408206156Sume 409206156Sumestatic const char * 410206156Sumemkaliases(StringList *sl, char *buf, size_t len) 411206156Sume{ 412206156Sume size_t nc, i, pos; 413206156Sume 414206156Sume buf[0] = 0; 415206156Sume for (i = 1, pos = 0; i < sl->sl_cur; i++) { 416206156Sume nc = strlcpy(buf + pos, sl->sl_str[i], len); 417206156Sume if (nc >= len) 418206156Sume goto out; 419206156Sume pos += nc; 420206156Sume len -= nc; 421206156Sume nc = strlcpy(buf + pos, " ", len); 422206156Sume if (nc >= len) 423206156Sume goto out; 424206156Sume pos += nc; 425206156Sume len -= nc; 426206156Sume } 427206156Sume return buf; 428206156Sumeout: 429206156Sume warn("aliases for `%s' truncated", sl->sl_str[0]); 430206156Sume return buf; 431206156Sume} 432206156Sume 433206156Sumestatic void 434206156Sumeusage(void) 435206156Sume{ 436263028Sjhb (void)fprintf(stderr, 437263028Sjhb "Usage:\t%s [-b | -l] [-q] [-o <db>] [<servicefile>]\n" 438206156Sume "\t%s -u [<servicefile>]\n", getprogname(), getprogname()); 439206156Sume exit(1); 440206156Sume} 441