diff options
Diffstat (limited to 'usr.sbin/sendmail/src/map.c')
| -rw-r--r-- | usr.sbin/sendmail/src/map.c | 1339 |
1 files changed, 0 insertions, 1339 deletions
diff --git a/usr.sbin/sendmail/src/map.c b/usr.sbin/sendmail/src/map.c deleted file mode 100644 index 01ba411..0000000 --- a/usr.sbin/sendmail/src/map.c +++ /dev/null @@ -1,1339 +0,0 @@ -/* - * Copyright (c) 1992 Eric P. Allman. - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. - */ - -#ifndef lint -static char sccsid[] = "@(#)map.c 8.25 (Berkeley) 4/17/94"; -#endif /* not lint */ - -#include "sendmail.h" - -#ifdef NDBM -#include <ndbm.h> -#endif -#ifdef NEWDB -#include <db.h> -#endif -#ifdef NIS -#include <rpcsvc/ypclnt.h> -#endif - -/* -** MAP.C -- implementations for various map classes. -** -** Each map class implements a series of functions: -** -** bool map_parse(MAP *map, char *args) -** Parse the arguments from the config file. Return TRUE -** if they were ok, FALSE otherwise. Fill in map with the -** values. -** -** char *map_lookup(MAP *map, char *key, char **args, int *pstat) -** Look up the key in the given map. If found, do any -** rewriting the map wants (including "args" if desired) -** and return the value. Set *pstat to the appropriate status -** on error and return NULL. Args will be NULL if called -** from the alias routines, although this should probably -** not be relied upon. It is suggested you call map_rewrite -** to return the results -- it takes care of null termination -** and uses a dynamically expanded buffer as needed. -** -** void map_store(MAP *map, char *key, char *value) -** Store the key:value pair in the map. -** -** bool map_open(MAP *map, int mode) -** Open the map for the indicated mode. Mode should -** be either O_RDONLY or O_RDWR. Return TRUE if it -** was opened successfully, FALSE otherwise. If the open -** failed an the MF_OPTIONAL flag is not set, it should -** also print an error. If the MF_ALIAS bit is set -** and this map class understands the @:@ convention, it -** should call aliaswait() before returning. -** -** void map_close(MAP *map) -** Close the map. -*/ - -#define DBMMODE 0644 - -extern bool aliaswait __P((MAP *, char *, int)); - /* -** MAP_PARSEARGS -- parse config line arguments for database lookup -** -** This is a generic version of the map_parse method. -** -** Parameters: -** map -- the map being initialized. -** ap -- a pointer to the args on the config line. -** -** Returns: -** TRUE -- if everything parsed OK. -** FALSE -- otherwise. -** -** Side Effects: -** null terminates the filename; stores it in map -*/ - -bool -map_parseargs(map, ap) - MAP *map; - char *ap; -{ - register char *p = ap; - - map->map_mflags |= MF_TRY0NULL | MF_TRY1NULL; - for (;;) - { - while (isascii(*p) && isspace(*p)) - p++; - if (*p != '-') - break; - switch (*++p) - { - case 'N': - map->map_mflags |= MF_INCLNULL; - map->map_mflags &= ~MF_TRY0NULL; - break; - - case 'O': - map->map_mflags &= ~MF_TRY1NULL; - break; - - case 'o': - map->map_mflags |= MF_OPTIONAL; - break; - - case 'f': - map->map_mflags |= MF_NOFOLDCASE; - break; - - case 'm': - map->map_mflags |= MF_MATCHONLY; - break; - - case 'a': - map->map_app = ++p; - break; - } - while (*p != '\0' && !(isascii(*p) && isspace(*p))) - p++; - if (*p != '\0') - *p++ = '\0'; - } - if (map->map_app != NULL) - map->map_app = newstr(map->map_app); - - if (*p != '\0') - { - map->map_file = p; - while (*p != '\0' && !(isascii(*p) && isspace(*p))) - p++; - if (*p != '\0') - *p++ = '\0'; - map->map_file = newstr(map->map_file); - } - - while (*p != '\0' && isascii(*p) && isspace(*p)) - p++; - if (*p != '\0') - map->map_rebuild = newstr(p); - - if (map->map_file == NULL) - { - syserr("No file name for %s map %s", - map->map_class->map_cname, map->map_mname); - return FALSE; - } - return TRUE; -} - /* -** MAP_REWRITE -- rewrite a database key, interpolating %n indications. -** -** It also adds the map_app string. It can be used as a utility -** in the map_lookup method. -** -** Parameters: -** map -- the map that causes this. -** s -- the string to rewrite, NOT necessarily null terminated. -** slen -- the length of s. -** av -- arguments to interpolate into buf. -** -** Returns: -** Pointer to rewritten result. -** -** Side Effects: -** none. -*/ - -struct rwbuf -{ - int rwb_len; /* size of buffer */ - char *rwb_buf; /* ptr to buffer */ -}; - -struct rwbuf RwBufs[2]; /* buffers for rewriting output */ - -char * -map_rewrite(map, s, slen, av) - register MAP *map; - register char *s; - int slen; - char **av; -{ - register char *bp; - register char c; - char **avp; - register char *ap; - register struct rwbuf *rwb; - int i; - int len; - - if (tTd(39, 1)) - { - printf("map_rewrite(%.*s), av =", slen, s); - if (av == NULL) - printf(" (nullv)"); - else - { - for (avp = av; *avp != NULL; avp++) - printf("\n\t%s", *avp); - } - printf("\n"); - } - - rwb = RwBufs; - if (av == NULL) - rwb++; - - /* count expected size of output (can safely overestimate) */ - i = len = slen; - if (av != NULL) - { - bp = s; - for (i = slen; --i >= 0 && (c = *bp++) != 0; ) - { - if (c != '%') - continue; - if (--i < 0) - break; - c = *bp++; - if (!(isascii(c) && isdigit(c))) - continue; - for (avp = av; --c >= '0' && *avp != NULL; avp++) - continue; - if (*avp == NULL) - continue; - len += strlen(*avp); - } - } - if (map->map_app != NULL) - len += strlen(map->map_app); - if (rwb->rwb_len < ++len) - { - /* need to malloc additional space */ - rwb->rwb_len = len; - if (rwb->rwb_buf != NULL) - free(rwb->rwb_buf); - rwb->rwb_buf = xalloc(rwb->rwb_len); - } - - bp = rwb->rwb_buf; - if (av == NULL) - { - bcopy(s, bp, slen); - bp += slen; - } - else - { - while (--slen >= 0 && (c = *s++) != '\0') - { - if (c != '%') - { - pushc: - *bp++ = c; - continue; - } - if (--slen < 0 || (c = *s++) == '\0') - c = '%'; - if (c == '%') - goto pushc; - if (!(isascii(c) && isdigit(c))) - { - *bp++ = '%'; - goto pushc; - } - for (avp = av; --c >= '0' && *avp != NULL; avp++) - continue; - if (*avp == NULL) - continue; - - /* transliterate argument into output string */ - for (ap = *avp; (c = *ap++) != '\0'; ) - *bp++ = c; - } - } - if (map->map_app != NULL) - strcpy(bp, map->map_app); - else - *bp = '\0'; - if (tTd(39, 1)) - printf("map_rewrite => %s\n", rwb->rwb_buf); - return rwb->rwb_buf; -} - /* -** INITMAPS -- initialize for aliasing -** -** Parameters: -** rebuild -- if TRUE, this rebuilds the cached versions. -** e -- current envelope. -** -** Returns: -** none. -** -** Side Effects: -** initializes aliases: -** if NDBM: opens the database. -** if ~NDBM: reads the aliases into the symbol table. -*/ - -initmaps(rebuild, e) - bool rebuild; - register ENVELOPE *e; -{ - extern void map_init(); - -#ifdef XDEBUG - checkfd012("entering initmaps"); -#endif - CurEnv = e; - if (rebuild) - { - stabapply(map_init, 1); - stabapply(map_init, 2); - } - else - { - stabapply(map_init, 0); - } -#ifdef XDEBUG - checkfd012("exiting initmaps"); -#endif -} - -void -map_init(s, rebuild) - register STAB *s; - int rebuild; -{ - register MAP *map; - - /* has to be a map */ - if (s->s_type != ST_MAP) - return; - - map = &s->s_map; - if (!bitset(MF_VALID, map->map_mflags)) - return; - - if (tTd(38, 2)) - printf("map_init(%s:%s, %d)\n", - map->map_class->map_cname == NULL ? "NULL" : - map->map_class->map_cname, - map->map_file == NULL ? "NULL" : map->map_file, - rebuild); - - if (rebuild == (bitset(MF_ALIAS, map->map_mflags) && - bitset(MCF_REBUILDABLE, map->map_class->map_cflags) ? 1 : 2)) - { - if (tTd(38, 3)) - printf("\twrong pass\n"); - return; - } - - /* if already open, close it (for nested open) */ - if (bitset(MF_OPEN, map->map_mflags)) - { - map->map_class->map_close(map); - map->map_mflags &= ~(MF_OPEN|MF_WRITABLE); - } - - if (rebuild == 2) - { - rebuildaliases(map, FALSE); - } - else - { - if (map->map_class->map_open(map, O_RDONLY)) - { - if (tTd(38, 4)) - printf("\t%s:%s: valid\n", - map->map_class->map_cname == NULL ? "NULL" : - map->map_class->map_cname, - map->map_file == NULL ? "NULL" : - map->map_file); - map->map_mflags |= MF_OPEN; - } - else if (tTd(38, 4)) - printf("\t%s:%s: invalid: %s\n", - map->map_class->map_cname == NULL ? "NULL" : - map->map_class->map_cname, - map->map_file == NULL ? "NULL" : - map->map_file, - errstring(errno)); - } -} - /* -** NDBM modules -*/ - -#ifdef NDBM - -/* -** DBM_MAP_OPEN -- DBM-style map open -*/ - -bool -ndbm_map_open(map, mode) - MAP *map; - int mode; -{ - register DBM *dbm; - struct stat st; - - if (tTd(38, 2)) - printf("ndbm_map_open(%s, %d)\n", map->map_file, mode); - - if (mode == O_RDWR) - mode |= O_CREAT|O_TRUNC; - - /* open the database */ - dbm = dbm_open(map->map_file, mode, DBMMODE); - if (dbm == NULL) - { -#ifdef MAYBENEXTRELEASE - if (aliaswait(map, ".pag", FALSE)) - return TRUE; -#endif - if (!bitset(MF_OPTIONAL, map->map_mflags)) - syserr("Cannot open DBM database %s", map->map_file); - return FALSE; - } - map->map_db1 = (void *) dbm; - if (mode == O_RDONLY) - { - if (bitset(MF_ALIAS, map->map_mflags) && - !aliaswait(map, ".pag", TRUE)) - return FALSE; - } - else - { - int fd; - - /* exclusive lock for duration of rebuild */ - fd = dbm_dirfno((DBM *) map->map_db1); - if (fd >= 0 && !bitset(MF_LOCKED, map->map_mflags) && - lockfile(fd, map->map_file, ".dir", LOCK_EX)) - map->map_mflags |= MF_LOCKED; - } - if (fstat(dbm_dirfno((DBM *) map->map_db1), &st) >= 0) - map->map_mtime = st.st_mtime; - return TRUE; -} - - -/* -** DBM_MAP_LOOKUP -- look up a datum in a DBM-type map -*/ - -char * -ndbm_map_lookup(map, name, av, statp) - MAP *map; - char *name; - char **av; - int *statp; -{ - datum key, val; - int fd; - char keybuf[MAXNAME + 1]; - - if (tTd(38, 20)) - printf("ndbm_map_lookup(%s)\n", name); - - key.dptr = name; - key.dsize = strlen(name); - if (!bitset(MF_NOFOLDCASE, map->map_mflags)) - { - if (key.dsize > sizeof keybuf - 1) - key.dsize = sizeof keybuf - 1; - bcopy(key.dptr, keybuf, key.dsize + 1); - makelower(keybuf); - key.dptr = keybuf; - } - fd = dbm_dirfno((DBM *) map->map_db1); - if (fd >= 0 && !bitset(MF_LOCKED, map->map_mflags)) - (void) lockfile(fd, map->map_file, ".dir", LOCK_SH); - val.dptr = NULL; - if (bitset(MF_TRY0NULL, map->map_mflags)) - { - val = dbm_fetch((DBM *) map->map_db1, key); - if (val.dptr != NULL) - map->map_mflags &= ~MF_TRY1NULL; - } - if (val.dptr == NULL && bitset(MF_TRY1NULL, map->map_mflags)) - { - key.dsize++; - val = dbm_fetch((DBM *) map->map_db1, key); - if (val.dptr != NULL) - map->map_mflags &= ~MF_TRY0NULL; - } - if (fd >= 0 && !bitset(MF_LOCKED, map->map_mflags)) - (void) lockfile(fd, map->map_file, ".dir", LOCK_UN); - if (val.dptr == NULL) - return NULL; - if (bitset(MF_MATCHONLY, map->map_mflags)) - return map_rewrite(map, name, strlen(name), NULL); - else - return map_rewrite(map, val.dptr, val.dsize, av); -} - - -/* -** DBM_MAP_STORE -- store a datum in the database -*/ - -void -ndbm_map_store(map, lhs, rhs) - register MAP *map; - char *lhs; - char *rhs; -{ - datum key; - datum data; - int stat; - - if (tTd(38, 12)) - printf("ndbm_map_store(%s, %s)\n", lhs, rhs); - - key.dsize = strlen(lhs); - key.dptr = lhs; - - data.dsize = strlen(rhs); - data.dptr = rhs; - - if (bitset(MF_INCLNULL, map->map_mflags)) - { - key.dsize++; - data.dsize++; - } - - stat = dbm_store((DBM *) map->map_db1, key, data, DBM_INSERT); - if (stat > 0) - { - usrerr("050 Warning: duplicate alias name %s", lhs); - stat = dbm_store((DBM *) map->map_db1, key, data, DBM_REPLACE); - } - if (stat != 0) - syserr("readaliases: dbm put (%s)", lhs); -} - - -/* -** NDBM_MAP_CLOSE -- close the database -*/ - -void -ndbm_map_close(map) - register MAP *map; -{ - if (tTd(38, 9)) - printf("ndbm_map_close(%s, %x)\n", map->map_file, map->map_mflags); - - if (bitset(MF_WRITABLE, map->map_mflags)) - { -#ifdef NIS - bool inclnull; - char buf[200]; - - inclnull = bitset(MF_INCLNULL, map->map_mflags); - map->map_mflags &= ~MF_INCLNULL; - - (void) sprintf(buf, "%010ld", curtime()); - ndbm_map_store(map, "YP_LAST_MODIFIED", buf); - - (void) gethostname(buf, sizeof buf); - ndbm_map_store(map, "YP_MASTER_NAME", buf); - - if (inclnull) - map->map_mflags |= MF_INCLNULL; -#endif - - /* write out the distinguished alias */ - ndbm_map_store(map, "@", "@"); - } - dbm_close((DBM *) map->map_db1); -} - -#endif - /* -** NEWDB (Hash and BTree) Modules -*/ - -#ifdef NEWDB - -/* -** BT_MAP_OPEN, HASH_MAP_OPEN -- database open primitives. -** -** These do rather bizarre locking. If you can lock on open, -** do that to avoid the condition of opening a database that -** is being rebuilt. If you don't, we'll try to fake it, but -** there will be a race condition. If opening for read-only, -** we immediately release the lock to avoid freezing things up. -** We really ought to hold the lock, but guarantee that we won't -** be pokey about it. That's hard to do. -*/ - -bool -bt_map_open(map, mode) - MAP *map; - int mode; -{ - DB *db; - int i; - int omode; - int fd; - struct stat st; - char buf[MAXNAME]; - - if (tTd(38, 2)) - printf("bt_map_open(%s, %d)\n", map->map_file, mode); - - omode = mode; - if (omode == O_RDWR) - { - omode |= O_CREAT|O_TRUNC; -#if defined(O_EXLOCK) && HASFLOCK - omode |= O_EXLOCK; -# if !OLD_NEWDB - } - else - { - omode |= O_SHLOCK; -# endif -#endif - } - - (void) strcpy(buf, map->map_file); - i = strlen(buf); - if (i < 3 || strcmp(&buf[i - 3], ".db") != 0) - (void) strcat(buf, ".db"); - db = dbopen(buf, omode, DBMMODE, DB_BTREE, NULL); - if (db == NULL) - { -#ifdef MAYBENEXTRELEASE - if (aliaswait(map, ".db", FALSE)) - return TRUE; -#endif - if (!bitset(MF_OPTIONAL, map->map_mflags)) - syserr("Cannot open BTREE database %s", map->map_file); - return FALSE; - } -#if !OLD_NEWDB && HASFLOCK - fd = db->fd(db); -# if !defined(O_EXLOCK) - if (mode == O_RDWR && fd >= 0) - { - if (lockfile(fd, map->map_file, ".db", LOCK_EX)) - map->map_mflags |= MF_LOCKED; - } -# else - if (mode == O_RDONLY && fd >= 0) - (void) lockfile(fd, map->map_file, ".db", LOCK_UN); - else - map->map_mflags |= MF_LOCKED; -# endif -#endif - - /* try to make sure that at least the database header is on disk */ - if (mode == O_RDWR) -#if OLD_NEWDB - (void) db->sync(db); -#else - (void) db->sync(db, 0); - - if (fd >= 0 && fstat(fd, &st) >= 0) - map->map_mtime = st.st_mtime; -#endif - - map->map_db2 = (void *) db; - if (mode == O_RDONLY && bitset(MF_ALIAS, map->map_mflags)) - if (!aliaswait(map, ".db", TRUE)) - return FALSE; - return TRUE; -} - - -/* -** HASH_MAP_INIT -- HASH-style map initialization -*/ - -bool -hash_map_open(map, mode) - MAP *map; - int mode; -{ - DB *db; - int i; - int omode; - int fd; - struct stat st; - char buf[MAXNAME]; - - if (tTd(38, 2)) - printf("hash_map_open(%s, %d)\n", map->map_file, mode); - - omode = mode; - if (omode == O_RDWR) - { - omode |= O_CREAT|O_TRUNC; -#if defined(O_EXLOCK) && HASFLOCK - omode |= O_EXLOCK; -# if !OLD_NEWDB - } - else - { - omode |= O_SHLOCK; -# endif -#endif - } - - (void) strcpy(buf, map->map_file); - i = strlen(buf); - if (i < 3 || strcmp(&buf[i - 3], ".db") != 0) - (void) strcat(buf, ".db"); - db = dbopen(buf, omode, DBMMODE, DB_HASH, NULL); - if (db == NULL) - { -#ifdef MAYBENEXTRELEASE - if (aliaswait(map, ".db", FALSE)) - return TRUE; -#endif - if (!bitset(MF_OPTIONAL, map->map_mflags)) - syserr("Cannot open HASH database %s", map->map_file); - return FALSE; - } -#if !OLD_NEWDB && HASFLOCK - fd = db->fd(db); -# if !defined(O_EXLOCK) - if (mode == O_RDWR && fd >= 0) - { - if (lockfile(fd, map->map_file, ".db", LOCK_EX)) - map->map_mflags |= MF_LOCKED; - } -# else - if (mode == O_RDONLY && fd >= 0) - (void) lockfile(fd, map->map_file, ".db", LOCK_UN); - else - map->map_mflags |= MF_LOCKED; -# endif -#endif - - /* try to make sure that at least the database header is on disk */ - if (mode == O_RDWR) -#if OLD_NEWDB - (void) db->sync(db); -#else - (void) db->sync(db, 0); - - if (fd >= 0 && fstat(fd, &st) >= 0) - map->map_mtime = st.st_mtime; -#endif - - map->map_db2 = (void *) db; - if (mode == O_RDONLY && bitset(MF_ALIAS, map->map_mflags)) - if (!aliaswait(map, ".db", TRUE)) - return FALSE; - return TRUE; -} - - -/* -** DB_MAP_LOOKUP -- look up a datum in a BTREE- or HASH-type map -*/ - -char * -db_map_lookup(map, name, av, statp) - MAP *map; - char *name; - char **av; - int *statp; -{ - DBT key, val; - register DB *db = (DB *) map->map_db2; - int st; - int saveerrno; - int fd; - char keybuf[MAXNAME + 1]; - - if (tTd(38, 20)) - printf("db_map_lookup(%s)\n", name); - - key.size = strlen(name); - if (key.size > sizeof keybuf - 1) - key.size = sizeof keybuf - 1; - key.data = keybuf; - bcopy(name, keybuf, key.size + 1); - if (!bitset(MF_NOFOLDCASE, map->map_mflags)) - makelower(keybuf); -#if !OLD_NEWDB - fd = db->fd(db); - if (fd >= 0 && !bitset(MF_LOCKED, map->map_mflags)) - (void) lockfile(db->fd(db), map->map_file, ".db", LOCK_SH); -#endif - st = 1; - if (bitset(MF_TRY0NULL, map->map_mflags)) - { - st = db->get(db, &key, &val, 0); - if (st == 0) - map->map_mflags &= ~MF_TRY1NULL; - } - if (st != 0 && bitset(MF_TRY1NULL, map->map_mflags)) - { - key.size++; - st = db->get(db, &key, &val, 0); - if (st == 0) - map->map_mflags &= ~MF_TRY0NULL; - } - saveerrno = errno; -#if !OLD_NEWDB - if (fd >= 0 && !bitset(MF_LOCKED, map->map_mflags)) - (void) lockfile(fd, map->map_file, ".db", LOCK_UN); -#endif - if (st != 0) - { - errno = saveerrno; - if (st < 0) - syserr("db_map_lookup: get (%s)", name); - return NULL; - } - if (bitset(MF_MATCHONLY, map->map_mflags)) - return map_rewrite(map, name, strlen(name), NULL); - else - return map_rewrite(map, val.data, val.size, av); -} - - -/* -** DB_MAP_STORE -- store a datum in the NEWDB database -*/ - -void -db_map_store(map, lhs, rhs) - register MAP *map; - char *lhs; - char *rhs; -{ - int stat; - DBT key; - DBT data; - register DB *db = map->map_db2; - - if (tTd(38, 20)) - printf("db_map_store(%s, %s)\n", lhs, rhs); - - key.size = strlen(lhs); - key.data = lhs; - - data.size = strlen(rhs); - data.data = rhs; - - if (bitset(MF_INCLNULL, map->map_mflags)) - { - key.size++; - data.size++; - } - - stat = db->put(db, &key, &data, R_NOOVERWRITE); - if (stat > 0) - { - usrerr("050 Warning: duplicate alias name %s", lhs); - stat = db->put(db, &key, &data, 0); - } - if (stat != 0) - syserr("readaliases: db put (%s)", lhs); -} - - -/* -** DB_MAP_CLOSE -- add distinguished entries and close the database -*/ - -void -db_map_close(map) - MAP *map; -{ - register DB *db = map->map_db2; - - if (tTd(38, 9)) - printf("db_map_close(%s, %x)\n", map->map_file, map->map_mflags); - - if (bitset(MF_WRITABLE, map->map_mflags)) - { - /* write out the distinguished alias */ - db_map_store(map, "@", "@"); - } - - if (db->close(db) != 0) - syserr("readaliases: db close failure"); -} - -#endif - /* -** NIS Modules -*/ - -# ifdef NIS - -# ifndef YPERR_BUSY -# define YPERR_BUSY 16 -# endif - -/* -** NIS_MAP_OPEN -- open DBM map -*/ - -bool -nis_map_open(map, mode) - MAP *map; - int mode; -{ - int yperr; - register char *p; - auto char *vp; - auto int vsize; - char *master; - - if (tTd(38, 2)) - printf("nis_map_open(%s)\n", map->map_file); - - if (mode != O_RDONLY) - { - /* issue a pseudo-error message */ -#ifdef ENOSYS - errno = ENOSYS; -#else -# ifdef EFTYPE - errno = EFTYPE; -# else - errno = ENXIO; -# endif -#endif - return FALSE; - } - - p = strchr(map->map_file, '@'); - if (p != NULL) - { - *p++ = '\0'; - if (*p != '\0') - map->map_domain = p; - } - - if (*map->map_file == '\0') - map->map_file = "mail.aliases"; - - if (map->map_domain == NULL) - { - yperr = yp_get_default_domain(&map->map_domain); - if (yperr != 0) - { - if (!bitset(MF_OPTIONAL, map->map_mflags)) - syserr("NIS map %s specified, but NIS not running\n", - map->map_file); - return FALSE; - } - } - - /* check to see if this map actually exists */ - yperr = yp_match(map->map_domain, map->map_file, "@", 1, - &vp, &vsize); - if (tTd(38, 10)) - printf("nis_map_open: yp_match(%s, %s) => %s\n", - map->map_domain, map->map_file, yperr_string(yperr)); - if (yperr == 0 || yperr == YPERR_KEY || yperr == YPERR_BUSY) - return TRUE; - - if (!bitset(MF_OPTIONAL, map->map_mflags)) - syserr("Cannot bind to domain %s: %s", map->map_domain, - yperr_string(yperr)); - - return FALSE; -} - - -/* -** NIS_MAP_LOOKUP -- look up a datum in a NIS map -*/ - -char * -nis_map_lookup(map, name, av, statp) - MAP *map; - char *name; - char **av; - int *statp; -{ - char *vp; - auto int vsize; - int buflen; - int yperr; - char keybuf[MAXNAME + 1]; - - if (tTd(38, 20)) - printf("nis_map_lookup(%s)\n", name); - - buflen = strlen(name); - if (buflen > sizeof keybuf - 1) - buflen = sizeof keybuf - 1; - bcopy(name, keybuf, buflen + 1); - if (!bitset(MF_NOFOLDCASE, map->map_mflags)) - makelower(keybuf); - yperr = YPERR_KEY; - if (bitset(MF_TRY0NULL, map->map_mflags)) - { - yperr = yp_match(map->map_domain, map->map_file, keybuf, buflen, - &vp, &vsize); - if (yperr == 0) - map->map_mflags &= ~MF_TRY1NULL; - } - if (yperr == YPERR_KEY && bitset(MF_TRY1NULL, map->map_mflags)) - { - buflen++; - yperr = yp_match(map->map_domain, map->map_file, keybuf, buflen, - &vp, &vsize); - if (yperr == 0) - map->map_mflags &= ~MF_TRY0NULL; - } - if (yperr != 0) - { - if (yperr != YPERR_KEY && yperr != YPERR_BUSY) - map->map_mflags &= ~(MF_VALID|MF_OPEN); - return NULL; - } - if (bitset(MF_MATCHONLY, map->map_mflags)) - return map_rewrite(map, name, strlen(name), NULL); - else - return map_rewrite(map, vp, vsize, av); -} - - -/* -** NIS_MAP_STORE -*/ - -void -nis_map_store(map, lhs, rhs) - MAP *map; - char *lhs; - char *rhs; -{ - /* nothing */ -} - - -/* -** NIS_MAP_CLOSE -*/ - -void -nis_map_close(map) - MAP *map; -{ - /* nothing */ -} - -#endif /* NIS */ - /* -** STAB (Symbol Table) Modules -*/ - - -/* -** STAB_MAP_LOOKUP -- look up alias in symbol table -*/ - -char * -stab_map_lookup(map, name, av, pstat) - register MAP *map; - char *name; - char **av; - int *pstat; -{ - register STAB *s; - - if (tTd(38, 20)) - printf("stab_lookup(%s)\n", name); - - s = stab(name, ST_ALIAS, ST_FIND); - if (s != NULL) - return (s->s_alias); - return (NULL); -} - - -/* -** STAB_MAP_STORE -- store in symtab (actually using during init, not rebuild) -*/ - -void -stab_map_store(map, lhs, rhs) - register MAP *map; - char *lhs; - char *rhs; -{ - register STAB *s; - - s = stab(lhs, ST_ALIAS, ST_ENTER); - s->s_alias = newstr(rhs); -} - - -/* -** STAB_MAP_OPEN -- initialize (reads data file) -** -** This is a wierd case -- it is only intended as a fallback for -** aliases. For this reason, opens for write (only during a -** "newaliases") always fails, and opens for read open the -** actual underlying text file instead of the database. -*/ - -bool -stab_map_open(map, mode) - register MAP *map; - int mode; -{ - FILE *af; - struct stat st; - - if (tTd(38, 2)) - printf("stab_map_open(%s)\n", map->map_file); - - if (mode != O_RDONLY) - { - errno = ENODEV; - return FALSE; - } - - af = fopen(map->map_file, "r"); - if (af == NULL) - return FALSE; - readaliases(map, af, TRUE); - - if (fstat(fileno(af), &st) >= 0) - map->map_mtime = st.st_mtime; - fclose(af); - - return TRUE; -} - - -/* -** STAB_MAP_CLOSE -- close symbol table. -** -** Since this is in memory, there is nothing to do. -*/ - -void -stab_map_close(map) - MAP *map; -{ - /* ignore it */ -} - /* -** Implicit Modules -** -** Tries several types. For back compatibility of aliases. -*/ - - -/* -** IMPL_MAP_LOOKUP -- lookup in best open database -*/ - -char * -impl_map_lookup(map, name, av, pstat) - MAP *map; - char *name; - char **av; - int *pstat; -{ - if (tTd(38, 20)) - printf("impl_map_lookup(%s)\n", name); - -#ifdef NEWDB - if (bitset(MF_IMPL_HASH, map->map_mflags)) - return db_map_lookup(map, name, av, pstat); -#endif -#ifdef NDBM - if (bitset(MF_IMPL_NDBM, map->map_mflags)) - return ndbm_map_lookup(map, name, av, pstat); -#endif - return stab_map_lookup(map, name, av, pstat); -} - -/* -** IMPL_MAP_STORE -- store in open databases -*/ - -void -impl_map_store(map, lhs, rhs) - MAP *map; - char *lhs; - char *rhs; -{ -#ifdef NEWDB - if (bitset(MF_IMPL_HASH, map->map_mflags)) - db_map_store(map, lhs, rhs); -#endif -#ifdef NDBM - if (bitset(MF_IMPL_NDBM, map->map_mflags)) - ndbm_map_store(map, lhs, rhs); -#endif - stab_map_store(map, lhs, rhs); -} - -/* -** IMPL_MAP_OPEN -- implicit database open -*/ - -bool -impl_map_open(map, mode) - MAP *map; - int mode; -{ - struct stat stb; - - if (tTd(38, 2)) - printf("impl_map_open(%s, %d)\n", map->map_file, mode); - - if (stat(map->map_file, &stb) < 0) - { - /* no alias file at all */ - if (tTd(38, 3)) - printf("no map file\n"); - return FALSE; - } - -#ifdef NEWDB - map->map_mflags |= MF_IMPL_HASH; - if (hash_map_open(map, mode)) - { -#if defined(NDBM) && defined(NIS) - if (mode == O_RDONLY || access("/var/yp/Makefile", R_OK) != 0) -#endif - return TRUE; - } - else - map->map_mflags &= ~MF_IMPL_HASH; -#endif -#ifdef NDBM - map->map_mflags |= MF_IMPL_NDBM; - if (ndbm_map_open(map, mode)) - { - return TRUE; - } - else - map->map_mflags &= ~MF_IMPL_NDBM; -#endif - -#if defined(NEWDB) || defined(NDBM) - if (Verbose) - message("WARNING: cannot open alias database %s", map->map_file); -#else - if (mode != O_RDONLY) - usrerr("Cannot rebuild aliases: no database format defined"); -#endif - - return stab_map_open(map, mode); -} - - -/* -** IMPL_MAP_CLOSE -- close any open database(s) -*/ - -void -impl_map_close(map) - MAP *map; -{ -#ifdef NEWDB - if (bitset(MF_IMPL_HASH, map->map_mflags)) - { - db_map_close(map); - map->map_mflags &= ~MF_IMPL_HASH; - } -#endif - -#ifdef NDBM - if (bitset(MF_IMPL_NDBM, map->map_mflags)) - { - ndbm_map_close(map); - map->map_mflags &= ~MF_IMPL_NDBM; - } -#endif -} - /* -** NULL stubs -*/ - -bool -null_map_open(map, mode) - MAP *map; - int mode; -{ - return TRUE; -} - -void -null_map_close(map) - MAP *map; -{ - return; -} - -void -null_map_store(map, key, val) - MAP *map; - char *key; - char *val; -{ - return; -} |
