782 lines
15 KiB
C
782 lines
15 KiB
C
/*
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* Copyright (c) 1992 Eric P. Allman.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)makemap.c 8.38 (Berkeley) 9/23/97";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/errno.h>
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#ifndef ISC_UNIX
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# include <sys/file.h>
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#endif
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#include "sendmail.h"
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#ifdef NDBM
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#include <ndbm.h>
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#endif
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#ifdef NEWDB
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#include <db.h>
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#endif
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enum type { T_DBM, T_BTREE, T_HASH, T_ERR, T_UNKNOWN };
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union dbent
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{
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#ifdef NDBM
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datum dbm;
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#endif
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#ifdef NEWDB
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DBT db;
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#endif
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struct
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{
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char *data;
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size_t size;
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} xx;
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};
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uid_t RealUid;
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gid_t RealGid;
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char *RealUserName;
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uid_t RunAsUid;
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uid_t RunAsGid;
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char *RunAsUserName;
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int Verbose = 2;
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bool DontInitGroups = TRUE;
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bool UnsafeGroupWrites = FALSE;
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u_char tTdvect[100];
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#define BUFSIZE 1024
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main(argc, argv)
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int argc;
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char **argv;
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{
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char *progname;
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bool inclnull = FALSE;
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bool notrunc = FALSE;
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bool allowreplace = FALSE;
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bool allowdups = FALSE;
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bool verbose = FALSE;
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bool foldcase = TRUE;
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bool ignoresafeties = FALSE;
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int exitstat;
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int opt;
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char *typename;
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char *mapname;
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char *ext;
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int lineno;
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int st;
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int mode;
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int putflags;
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long dbcachesize = 1024 * 1024;
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enum type type;
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int fd;
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union
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{
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#ifdef NDBM
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DBM *dbm;
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#endif
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#ifdef NEWDB
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DB *db;
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#endif
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void *dbx;
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} dbp;
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union dbent key, val;
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#ifdef NEWDB
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BTREEINFO bti;
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HASHINFO hinfo;
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#endif
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char ibuf[BUFSIZE];
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char fbuf[MAXNAME];
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char dbuf[MAXNAME];
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char pbuf[MAXNAME];
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static char rnamebuf[MAXNAME]; /* holds RealUserName */
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struct passwd *pw;
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int sff = SFF_ROOTOK|SFF_REGONLY|SFF_NOLINK|SFF_NOWLINK;
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struct stat std, stp;
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extern char *optarg;
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extern int optind;
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extern bool lockfile();
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progname = argv[0];
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RunAsUid = RealUid = getuid();
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RunAsGid = RealGid = getgid();
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pw = getpwuid(RealUid);
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if (pw != NULL)
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{
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if (strlen(pw->pw_name) > MAXNAME - 1)
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pw->pw_name[MAXNAME] = 0;
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sprintf(rnamebuf, "%s", pw->pw_name);
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}
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else
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sprintf(rnamebuf, "Unknown UID %d", RealUid);
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RunAsUserName = RealUserName = rnamebuf;
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#if _FFR_NEW_MAKEMAP_FLAGS
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#define OPTIONS "Nc:dforsv"
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#else
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#define OPTIONS "Ndforv"
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#endif
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while ((opt = getopt(argc, argv, OPTIONS)) != -1)
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{
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switch (opt)
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{
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case 'N':
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inclnull = TRUE;
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break;
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#if _FFR_NEW_MAKEMAP_FLAGS
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case 'c':
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dbcachesize = atol(optarg);
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break;
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#endif
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case 'd':
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allowdups = TRUE;
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break;
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case 'f':
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foldcase = FALSE;
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break;
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case 'o':
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notrunc = TRUE;
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break;
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case 'r':
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allowreplace = TRUE;
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break;
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#if _FFR_NEW_MAKEMAP_FLAGS
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case 's':
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ignoresafeties = TRUE;
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break;
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#endif
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case 'v':
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verbose = TRUE;
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break;
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default:
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type = T_ERR;
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break;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 2)
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type = T_ERR;
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else
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{
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typename = argv[0];
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mapname = argv[1];
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ext = NULL;
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if (strcmp(typename, "dbm") == 0)
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{
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type = T_DBM;
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}
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else if (strcmp(typename, "btree") == 0)
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{
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type = T_BTREE;
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ext = ".db";
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}
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else if (strcmp(typename, "hash") == 0)
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{
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type = T_HASH;
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ext = ".db";
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}
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else
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type = T_UNKNOWN;
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}
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switch (type)
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{
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case T_ERR:
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#if _FFR_NEW_MAKEMAP_FLAGS
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fprintf(stderr,
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"Usage: %s [-N] [-c cachesize] [-d] [-f] [-o] [-r] [-s] [-v] type mapname\n",
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progname);
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#else
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fprintf(stderr, "Usage: %s [-N] [-d] [-f] [-o] [-r] [-v] type mapname\n", progname);
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#endif
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exit(EX_USAGE);
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case T_UNKNOWN:
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fprintf(stderr, "%s: Unknown database type %s\n",
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progname, typename);
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exit(EX_USAGE);
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#ifndef NDBM
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case T_DBM:
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#endif
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#ifndef NEWDB
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case T_BTREE:
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case T_HASH:
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#endif
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fprintf(stderr, "%s: Type %s not supported in this version\n",
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progname, typename);
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exit(EX_UNAVAILABLE);
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#ifdef NEWDB
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case T_BTREE:
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bzero(&bti, sizeof bti);
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if (allowdups)
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bti.flags |= R_DUP;
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if (allowdups || allowreplace)
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putflags = 0;
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else
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putflags = R_NOOVERWRITE;
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break;
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case T_HASH:
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bzero(&hinfo, sizeof hinfo);
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if (allowreplace)
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putflags = 0;
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else
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putflags = R_NOOVERWRITE;
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break;
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#endif
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#ifdef NDBM
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case T_DBM:
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if (allowdups)
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{
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fprintf(stderr, "%s: Type %s does not support -d (allow dups)\n",
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progname, typename);
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exit(EX_UNAVAILABLE);
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}
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if (allowreplace)
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putflags = DBM_REPLACE;
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else
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putflags = DBM_INSERT;
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break;
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#endif
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}
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/*
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** Adjust file names.
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*/
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if (ext != NULL)
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{
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int el, fl;
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el = strlen(ext);
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fl = strlen(mapname);
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if (el + fl + 1 >= sizeof fbuf)
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{
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fprintf(stderr, "%s: file name too long", mapname);
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exit(EX_USAGE);
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}
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if (fl < el || strcmp(&mapname[fl - el], ext) != 0)
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{
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strcpy(fbuf, mapname);
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strcat(fbuf, ext);
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mapname = fbuf;
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}
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}
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if (!notrunc)
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sff |= SFF_CREAT;
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switch (type)
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{
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#ifdef NEWDB
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case T_BTREE:
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case T_HASH:
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if (strlen(mapname) >= sizeof dbuf)
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{
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fprintf(stderr,
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"%s: map name too long\n", mapname);
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exit(EX_USAGE);
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}
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strcpy(dbuf, mapname);
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if (!ignoresafeties &&
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(st = safefile(dbuf, RealUid, RealGid, RealUserName,
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sff, S_IWUSR, &std)) != 0)
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{
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fprintf(stderr,
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"%s: could not create: %s\n",
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dbuf, errstring(st));
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exit(EX_CANTCREAT);
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}
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break;
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#endif
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#ifdef NDBM
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case T_DBM:
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if (strlen(mapname) + 5 > sizeof dbuf)
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{
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fprintf(stderr,
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"%s: map name too long\n", mapname);
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exit(EX_USAGE);
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}
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sprintf(dbuf, "%s.dir", mapname);
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if ((st = safefile(dbuf, RealUid, RealGid, RealUserName,
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sff, S_IWUSR, &std)) != 0 && !ignoresafeties)
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{
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fprintf(stderr,
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"%s: could not create: %s\n",
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dbuf, errstring(st));
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exit(EX_CANTCREAT);
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}
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sprintf(pbuf, "%s.pag", mapname);
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if ((st = safefile(pbuf, RealUid, RealGid, RealUserName,
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sff, S_IWUSR, &stp)) != 0 && !ignoresafeties)
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{
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fprintf(stderr,
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"%s: could not create: %s\n",
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pbuf, errstring(st));
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exit(EX_CANTCREAT);
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}
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break;
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#endif
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default:
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fprintf(stderr,
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"%s: internal error: type %d\n",
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progname,
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type);
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exit(EX_SOFTWARE);
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}
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/*
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** Create the database.
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*/
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mode = O_RDWR;
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if (!notrunc)
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mode |= O_CREAT|O_TRUNC;
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#if O_EXLOCK
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mode |= O_EXLOCK;
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#else
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/* pre-lock the database */
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if (ignoresafeties)
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fd = dfopen(dbuf, mode & ~O_TRUNC, 0644, sff);
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else
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fd = safeopen(dbuf, mode & ~O_TRUNC, 0644, sff);
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if (fd < 0)
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{
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fprintf(stderr, "%s: cannot create type %s map %s\n",
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progname, typename, mapname);
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exit(EX_CANTCREAT);
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}
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#endif
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switch (type)
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{
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#ifdef NDBM
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case T_DBM:
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dbp.dbm = dbm_open(mapname, mode, 0644);
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if (dbp.dbm != NULL &&
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dbm_dirfno(dbp.dbm) == dbm_pagfno(dbp.dbm))
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{
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fprintf(stderr, "dbm map %s: cannot run with GDBM\n",
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mapname);
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dbm_close(dbp.dbm);
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exit(EX_CONFIG);
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}
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if (!ignoresafeties && dbp.dbm != NULL &&
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(filechanged(dbuf, dbm_dirfno(dbp.dbm), &std, sff) ||
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filechanged(pbuf, dbm_pagfno(dbp.dbm), &stp, sff)))
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{
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fprintf(stderr,
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"dbm map %s: file changed after open\n",
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mapname);
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dbm_close(dbp.dbm);
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exit(EX_CANTCREAT);
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}
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break;
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#endif
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#ifdef NEWDB
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case T_HASH:
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/* tweak some parameters for performance */
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hinfo.nelem = 4096;
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hinfo.cachesize = dbcachesize;
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dbp.db = dbopen(mapname, mode, 0644, DB_HASH, &hinfo);
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if (dbp.db != NULL)
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{
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if (!ignoresafeties &&
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filechanged(dbuf, dbp.db->fd(dbp.db), &std, sff))
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{
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fprintf(stderr,
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"db map %s: file changed after open\n",
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mapname);
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dbp.db->close(dbp.db);
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exit(EX_CANTCREAT);
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}
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# if OLD_NEWDB
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(void) (*dbp.db->sync)(dbp.db);
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# else
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(void) (*dbp.db->sync)(dbp.db, 0);
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# endif
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}
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break;
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case T_BTREE:
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/* tweak some parameters for performance */
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bti.cachesize = dbcachesize;
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dbp.db = dbopen(mapname, mode, 0644, DB_BTREE, &bti);
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if (dbp.db != NULL)
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{
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if (!ignoresafeties &&
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filechanged(dbuf, dbp.db->fd(dbp.db), &std, sff))
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{
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fprintf(stderr,
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"db map %s: file changed after open\n",
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mapname);
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dbp.db->close(dbp.db);
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exit(EX_CANTCREAT);
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}
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# if OLD_NEWDB
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(void) (*dbp.db->sync)(dbp.db);
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# else
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(void) (*dbp.db->sync)(dbp.db, 0);
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# endif
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}
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break;
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#endif
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default:
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fprintf(stderr, "%s: internal error: type %d\n",
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progname, type);
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exit(EX_SOFTWARE);
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}
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if (dbp.dbx == NULL)
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{
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fprintf(stderr, "%s: cannot open type %s map %s\n",
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progname, typename, mapname);
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exit(EX_CANTCREAT);
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}
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/*
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** Copy the data
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*/
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lineno = 0;
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exitstat = EX_OK;
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while (fgets(ibuf, sizeof ibuf, stdin) != NULL)
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{
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register char *p;
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lineno++;
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/*
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** Parse the line.
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*/
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p = strchr(ibuf, '\n');
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if (p != NULL)
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*p = '\0';
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else if (!feof(stdin))
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{
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fprintf(stderr, "%s: %s: line %d: line too long (%d bytes max)\n",
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progname, mapname, lineno, sizeof ibuf);
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continue;
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}
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if (ibuf[0] == '\0' || ibuf[0] == '#')
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continue;
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if (isspace(ibuf[0]))
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{
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fprintf(stderr, "%s: %s: line %d: syntax error (leading space)\n",
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progname, mapname, lineno);
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continue;
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}
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key.xx.data = ibuf;
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for (p = ibuf; *p != '\0' && !isspace(*p); p++)
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{
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if (foldcase && isupper(*p))
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*p = tolower(*p);
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}
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key.xx.size = p - key.xx.data;
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if (inclnull)
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key.xx.size++;
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if (*p != '\0')
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*p++ = '\0';
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while (isspace(*p))
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p++;
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if (*p == '\0')
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{
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fprintf(stderr, "%s: %s: line %d: no RHS for LHS %s\n",
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progname, mapname, lineno, key.xx.data);
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continue;
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}
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val.xx.data = p;
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val.xx.size = strlen(p);
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if (inclnull)
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val.xx.size++;
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/*
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** Do the database insert.
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*/
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if (verbose)
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{
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printf("key=`%s', val=`%s'\n", key.xx.data, val.xx.data);
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}
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switch (type)
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{
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#ifdef NDBM
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case T_DBM:
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st = dbm_store(dbp.dbm, key.dbm, val.dbm, putflags);
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break;
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#endif
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#ifdef NEWDB
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case T_BTREE:
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case T_HASH:
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st = (*dbp.db->put)(dbp.db, &key.db, &val.db, putflags);
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break;
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#endif
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}
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if (st < 0)
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||
{
|
||
fprintf(stderr, "%s: %s: line %d: key %s: put error\n",
|
||
progname, mapname, lineno, key.xx.data);
|
||
perror(mapname);
|
||
exitstat = EX_IOERR;
|
||
}
|
||
else if (st > 0)
|
||
{
|
||
fprintf(stderr,
|
||
"%s: %s: line %d: key %s: duplicate key\n",
|
||
progname, mapname, lineno, key.xx.data);
|
||
}
|
||
}
|
||
|
||
/*
|
||
** Now close the database.
|
||
*/
|
||
|
||
switch (type)
|
||
{
|
||
#ifdef NDBM
|
||
case T_DBM:
|
||
dbm_close(dbp.dbm);
|
||
break;
|
||
#endif
|
||
|
||
#ifdef NEWDB
|
||
case T_HASH:
|
||
case T_BTREE:
|
||
if ((*dbp.db->close)(dbp.db) < 0)
|
||
{
|
||
fprintf(stderr, "%s: %s: error on close\n",
|
||
progname, mapname);
|
||
perror(mapname);
|
||
exitstat = EX_IOERR;
|
||
}
|
||
#endif
|
||
}
|
||
|
||
#if !O_EXLOCK
|
||
/* release locks */
|
||
close(fd);
|
||
#endif
|
||
|
||
exit (exitstat);
|
||
}
|
||
/*
|
||
** LOCKFILE -- lock a file using flock or (shudder) fcntl locking
|
||
**
|
||
** Parameters:
|
||
** fd -- the file descriptor of the file.
|
||
** filename -- the file name (for error messages).
|
||
** ext -- the filename extension.
|
||
** type -- type of the lock. Bits can be:
|
||
** LOCK_EX -- exclusive lock.
|
||
** LOCK_NB -- non-blocking.
|
||
**
|
||
** Returns:
|
||
** TRUE if the lock was acquired.
|
||
** FALSE otherwise.
|
||
*/
|
||
|
||
bool
|
||
lockfile(fd, filename, ext, type)
|
||
int fd;
|
||
char *filename;
|
||
char *ext;
|
||
int type;
|
||
{
|
||
# if !HASFLOCK
|
||
int action;
|
||
struct flock lfd;
|
||
extern int errno;
|
||
|
||
bzero(&lfd, sizeof lfd);
|
||
if (bitset(LOCK_UN, type))
|
||
lfd.l_type = F_UNLCK;
|
||
else if (bitset(LOCK_EX, type))
|
||
lfd.l_type = F_WRLCK;
|
||
else
|
||
lfd.l_type = F_RDLCK;
|
||
if (bitset(LOCK_NB, type))
|
||
action = F_SETLK;
|
||
else
|
||
action = F_SETLKW;
|
||
|
||
if (fcntl(fd, action, &lfd) >= 0)
|
||
return TRUE;
|
||
|
||
/*
|
||
** On SunOS, if you are testing using -oQ/tmp/mqueue or
|
||
** -oA/tmp/aliases or anything like that, and /tmp is mounted
|
||
** as type "tmp" (that is, served from swap space), the
|
||
** previous fcntl will fail with "Invalid argument" errors.
|
||
** Since this is fairly common during testing, we will assume
|
||
** that this indicates that the lock is successfully grabbed.
|
||
*/
|
||
|
||
if (errno == EINVAL)
|
||
return TRUE;
|
||
|
||
# else /* HASFLOCK */
|
||
|
||
if (flock(fd, type) >= 0)
|
||
return TRUE;
|
||
|
||
# endif
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/*VARARGS2*/
|
||
void
|
||
#ifdef __STDC__
|
||
message(const char *msg, ...)
|
||
#else
|
||
message(msg, va_alist)
|
||
const char *msg;
|
||
va_dcl
|
||
#endif
|
||
{
|
||
const char *m;
|
||
VA_LOCAL_DECL
|
||
|
||
m = msg;
|
||
if (isdigit(m[0]) && isdigit(m[1]) && isdigit(m[2]) && m[3] == ' ')
|
||
m += 4;
|
||
VA_START(msg);
|
||
vfprintf(stderr, m, ap);
|
||
VA_END;
|
||
fprintf(stderr, "\n");
|
||
}
|
||
|
||
/*VARARGS2*/
|
||
void
|
||
#ifdef __STDC__
|
||
syserr(const char *msg, ...)
|
||
#else
|
||
syserr(msg, va_alist)
|
||
const char *msg;
|
||
va_dcl
|
||
#endif
|
||
{
|
||
const char *m;
|
||
VA_LOCAL_DECL
|
||
|
||
m = msg;
|
||
if (isdigit(m[0]) && isdigit(m[1]) && isdigit(m[2]) && m[3] == ' ')
|
||
m += 4;
|
||
VA_START(msg);
|
||
vfprintf(stderr, m, ap);
|
||
VA_END;
|
||
fprintf(stderr, "\n");
|
||
}
|
||
|
||
const char *
|
||
errstring(err)
|
||
int err;
|
||
{
|
||
static char errstr[64];
|
||
#if !HASSTRERROR && !defined(ERRLIST_PREDEFINED)
|
||
extern char *sys_errlist[];
|
||
extern int sys_nerr;
|
||
#endif
|
||
|
||
/* handle pseudo-errors internal to sendmail */
|
||
switch (err)
|
||
{
|
||
case E_SM_OPENTIMEOUT:
|
||
return "Timeout on file open";
|
||
|
||
case E_SM_NOSLINK:
|
||
return "Symbolic links not allowed";
|
||
|
||
case E_SM_NOHLINK:
|
||
return "Hard links not allowed";
|
||
|
||
case E_SM_REGONLY:
|
||
return "Regular files only";
|
||
|
||
case E_SM_ISEXEC:
|
||
return "Executable files not allowed";
|
||
|
||
case E_SM_WWDIR:
|
||
return "World writable directory";
|
||
|
||
case E_SM_GWDIR:
|
||
return "Group writable directory";
|
||
|
||
case E_SM_FILECHANGE:
|
||
return "File changed after open";
|
||
|
||
case E_SM_WWFILE:
|
||
return "World writable file";
|
||
|
||
case E_SM_GWFILE:
|
||
return "Group writable file";
|
||
}
|
||
|
||
#if HASSTRERROR
|
||
return strerror(err);
|
||
#else
|
||
if (err < 0 || err > sys_nerr)
|
||
{
|
||
sprintf(errstr, "Error %d", err);
|
||
return errstr;
|
||
}
|
||
return sys_errlist[err];
|
||
#endif
|
||
}
|