diff options
Diffstat (limited to 'usr.sbin/services_mkdb/services_mkdb.c')
| -rw-r--r-- | usr.sbin/services_mkdb/services_mkdb.c | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/usr.sbin/services_mkdb/services_mkdb.c b/usr.sbin/services_mkdb/services_mkdb.c new file mode 100644 index 0000000..f4cf62a --- /dev/null +++ b/usr.sbin/services_mkdb/services_mkdb.c @@ -0,0 +1,429 @@ +/* $NetBSD: services_mkdb.c,v 1.14 2008/04/28 20:24:17 martin Exp $ */ + +/*- + * Copyright (c) 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Luke Mewburn and Christos Zoulas. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/stat.h> + +#include <assert.h> +#include <db.h> +#include <err.h> +#include <fcntl.h> +#include <netdb.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <libutil.h> +#include <ctype.h> +#include <errno.h> +#include <stringlist.h> + +static char tname[MAXPATHLEN]; + +#define PMASK 0xffff +#define PROTOMAX 5 + +extern void uniq(const char *); + +static void add(DB *, StringList *, size_t, const char *, size_t *, int); +static StringList ***parseservices(const char *, StringList *); +static void cleanup(void); +static void store(DB *, DBT *, DBT *, int); +static void killproto(DBT *); +static char *getstring(const char *, size_t, char **, const char *); +static size_t getprotoindex(StringList *, const char *); +static const char *getprotostr(StringList *, size_t); +static const char *mkaliases(StringList *, char *, size_t); +static void usage(void); + +const HASHINFO hinfo = { + .bsize = 256, + .ffactor = 4, + .nelem = 32768, + .cachesize = 1024, + .hash = NULL, + .lorder = 0 +}; + + +int +main(int argc, char *argv[]) +{ + DB *db; + int ch; + const char *fname = _PATH_SERVICES; + const char *dbname = _PATH_SERVICES_DB; + int warndup = 1; + int unique = 0; + int otherflag = 0; + size_t cnt = 0; + StringList *sl, ***svc; + size_t port, proto; + + setprogname(argv[0]); + + while ((ch = getopt(argc, argv, "qo:u")) != -1) + switch (ch) { + case 'q': + otherflag = 1; + warndup = 0; + break; + case 'o': + otherflag = 1; + dbname = optarg; + break; + case 'u': + unique++; + break; + case '?': + default: + usage(); + } + + argc -= optind; + argv += optind; + + if (argc > 1 || (unique && otherflag)) + usage(); + if (argc == 1) + fname = argv[0]; + + if (unique) + uniq(fname); + + svc = parseservices(fname, sl = sl_init()); + + if (atexit(cleanup)) + err(1, "Cannot install exit handler"); + + (void)snprintf(tname, sizeof(tname), "%s.tmp", dbname); + db = dbopen(tname, O_RDWR | O_CREAT | O_EXCL, + (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH), DB_HASH, &hinfo); + if (!db) + err(1, "Error opening temporary database `%s'", tname); + + + for (port = 0; port < PMASK + 1; port++) { + if (svc[port] == NULL) + continue; + + for (proto = 0; proto < PROTOMAX; proto++) { + StringList *s; + if ((s = svc[port][proto]) == NULL) + continue; + add(db, s, port, getprotostr(sl, proto), &cnt, warndup); + } + + free(svc[port]); + } + + free(svc); + sl_free(sl, 1); + + if ((db->close)(db)) + err(1, "Error closing temporary database `%s'", tname); + + if (rename(tname, dbname) == -1) + err(1, "Cannot rename `%s' to `%s'", tname, dbname); + + return 0; +} + +static void +add(DB *db, StringList *sl, size_t port, const char *proto, size_t *cnt, + int warndup) +{ + size_t i; + char keyb[BUFSIZ], datab[BUFSIZ], abuf[BUFSIZ]; + DBT data, key; + key.data = keyb; + data.data = datab; + +#ifdef DEBUG + (void)printf("add %s %zu %s [ ", sl->sl_str[0], port, proto); + for (i = 1; i < sl->sl_cur; i++) + (void)printf("%s ", sl->sl_str[i]); + (void)printf("]\n"); +#endif + + /* key `indirect key', data `full line' */ + data.size = snprintf(datab, sizeof(datab), "%zu", (*cnt)++) + 1; + key.size = snprintf(keyb, sizeof(keyb), "%s %zu/%s %s", + sl->sl_str[0], port, proto, mkaliases(sl, abuf, sizeof(abuf))) + 1; + store(db, &data, &key, warndup); + + /* key `\377port/proto', data = `indirect key' */ + key.size = snprintf(keyb, sizeof(keyb), "\377%zu/%s", + port, proto) + 1; + store(db, &key, &data, warndup); + + /* key `\377port', data = `indirect key' */ + killproto(&key); + store(db, &key, &data, warndup); + + /* add references for service and all aliases */ + for (i = 0; i < sl->sl_cur; i++) { + /* key `\376service/proto', data = `indirect key' */ + key.size = snprintf(keyb, sizeof(keyb), "\376%s/%s", + sl->sl_str[i], proto) + 1; + store(db, &key, &data, warndup); + + /* key `\376service', data = `indirect key' */ + killproto(&key); + store(db, &key, &data, warndup); + } + sl_free(sl, 1); +} + +static StringList *** +parseservices(const char *fname, StringList *sl) +{ + size_t len, line, pindex; + FILE *fp; + StringList ***svc, *s; + char *p, *ep; + + if ((fp = fopen(fname, "r")) == NULL) + err(1, "Cannot open `%s'", fname); + + line = 0; + if ((svc = calloc(PMASK + 1, sizeof(StringList **))) == NULL) + err(1, "Cannot allocate %zu bytes", (size_t)(PMASK + 1)); + + /* XXX: change NULL to "\0\0#" when fparseln fixed */ + for (; (p = fparseln(fp, &len, &line, NULL, 0)) != NULL; free(p)) { + char *name, *port, *proto, *aliases, *cp, *alias; + unsigned long pnum; + + if (len == 0) + continue; + + for (cp = p; *cp && isspace((unsigned char)*cp); cp++) + continue; + + if (*cp == '\0' || *cp == '#') + continue; + + if ((name = getstring(fname, line, &cp, "name")) == NULL) + continue; + + if ((port = getstring(fname, line, &cp, "port")) == NULL) + continue; + + if (cp) { + for (aliases = cp; *cp && *cp != '#'; cp++) + continue; + + if (*cp) + *cp = '\0'; + } else + aliases = NULL; + + proto = strchr(port, '/'); + if (proto == NULL || proto[1] == '\0') { + warnx("%s, %zu: no protocol found", fname, line); + continue; + } + *proto++ = '\0'; + + errno = 0; + pnum = strtoul(port, &ep, 0); + if (*port == '\0' || *ep != '\0') { + warnx("%s, %zu: invalid port `%s'", fname, line, port); + continue; + } + if ((errno == ERANGE && pnum == ULONG_MAX) || pnum > PMASK) { + warnx("%s, %zu: port too big `%s'", fname, line, port); + continue; + } + + if (svc[pnum] == NULL) { + svc[pnum] = calloc(PROTOMAX, sizeof(StringList *)); + if (svc[pnum] == NULL) + err(1, "Cannot allocate %zu bytes", + (size_t)PROTOMAX); + } + + pindex = getprotoindex(sl, proto); + if (svc[pnum][pindex] == NULL) + s = svc[pnum][pindex] = sl_init(); + else + s = svc[pnum][pindex]; + + /* build list of aliases */ + if (sl_find(s, name) == NULL) { + char *p2; + + if ((p2 = strdup(name)) == NULL) + err(1, "Cannot copy string"); + (void)sl_add(s, p2); + } + + if (aliases) { + while ((alias = strsep(&aliases, " \t")) != NULL) { + if (alias[0] == '\0') + continue; + if (sl_find(s, alias) == NULL) { + char *p2; + + if ((p2 = strdup(alias)) == NULL) + err(1, "Cannot copy string"); + (void)sl_add(s, p2); + } + } + } + } + (void)fclose(fp); + return svc; +} + +/* + * cleanup(): Remove temporary files upon exit + */ +static void +cleanup(void) +{ + if (tname[0]) + (void)unlink(tname); +} + +static char * +getstring(const char *fname, size_t line, char **cp, const char *tag) +{ + char *str; + + while ((str = strsep(cp, " \t")) != NULL && *str == '\0') + continue; + + if (str == NULL) + warnx("%s, %zu: no %s found", fname, line, tag); + + return str; +} + +static void +killproto(DBT *key) +{ + char *p, *d = key->data; + + if ((p = strchr(d, '/')) == NULL) + abort(); + *p++ = '\0'; + key->size = p - d; +} + +static void +store(DB *db, DBT *key, DBT *data, int warndup) +{ +#ifdef DEBUG + int k = key->size - 1; + int d = data->size - 1; + (void)printf("store [%*.*s] [%*.*s]\n", + k, k, (char *)key->data + 1, + d, d, (char *)data->data + 1); +#endif + switch ((db->put)(db, key, data, R_NOOVERWRITE)) { + case 0: + break; + case 1: + if (warndup) + warnx("duplicate service `%s'", + &((char *)key->data)[1]); + break; + case -1: + err(1, "put"); + break; + default: + abort(); + break; + } +} + +static size_t +getprotoindex(StringList *sl, const char *str) +{ + size_t i; + char *p; + + for (i= 0; i < sl->sl_cur; i++) + if (strcmp(sl->sl_str[i], str) == 0) + return i; + + if (i == PROTOMAX) + errx(1, "Ran out of protocols adding `%s';" + " recompile with larger PROTOMAX", str); + if ((p = strdup(str)) == NULL) + err(1, "Cannot copy string"); + (void)sl_add(sl, p); + return i; +} + +static const char * +getprotostr(StringList *sl, size_t i) +{ + assert(i < sl->sl_cur); + return sl->sl_str[i]; +} + +static const char * +mkaliases(StringList *sl, char *buf, size_t len) +{ + size_t nc, i, pos; + + buf[0] = 0; + for (i = 1, pos = 0; i < sl->sl_cur; i++) { + nc = strlcpy(buf + pos, sl->sl_str[i], len); + if (nc >= len) + goto out; + pos += nc; + len -= nc; + nc = strlcpy(buf + pos, " ", len); + if (nc >= len) + goto out; + pos += nc; + len -= nc; + } + return buf; +out: + warn("aliases for `%s' truncated", sl->sl_str[0]); + return buf; +} + +static void +usage(void) +{ + (void)fprintf(stderr, "Usage:\t%s [-q] [-o <db>] [<servicefile>]\n" + "\t%s -u [<servicefile>]\n", getprogname(), getprogname()); + exit(1); +} |
