530 lines
11 KiB
C
530 lines
11 KiB
C
/*
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* Copyright (c) 1998-2002, 2004, 2008 Sendmail, Inc. and its suppliers.
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* All rights reserved.
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* Copyright (c) 1992 Eric P. Allman. All rights reserved.
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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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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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*/
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#include <sm/gen.h>
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SM_IDSTR(copyright,
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"@(#) Copyright (c) 1998-2002, 2004 Sendmail, Inc. and its suppliers.\n\
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All rights reserved.\n\
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Copyright (c) 1992 Eric P. Allman. All rights reserved.\n\
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Copyright (c) 1992, 1993\n\
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The Regents of the University of California. All rights reserved.\n")
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SM_IDSTR(id, "@(#)$Id: makemap.c,v 8.180 2010/11/23 02:35:08 gshapiro Exp $")
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#include <sys/types.h>
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#ifndef ISC_UNIX
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# include <sys/file.h>
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#endif /* ! ISC_UNIX */
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifdef EX_OK
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# undef EX_OK /* unistd.h may have another use for this */
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#endif /* EX_OK */
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#include <sysexits.h>
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#include <sendmail/sendmail.h>
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#include <sendmail/pathnames.h>
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#include <libsmdb/smdb.h>
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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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gid_t RunAsGid;
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char *RunAsUserName;
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int Verbose = 2;
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bool DontInitGroups = false;
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uid_t TrustedUid = 0;
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BITMAP256 DontBlameSendmail;
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#define BUFSIZE 1024
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#define ISSEP(c) (sep == '\0' ? isascii(c) && isspace(c) : (c) == sep)
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static void usage __P((char *));
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static void
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usage(progname)
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char *progname;
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{
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sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"Usage: %s [-C cffile] [-N] [-c cachesize] [-D commentchar]\n",
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progname);
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sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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" %*s [-d] [-e] [-f] [-l] [-o] [-r] [-s] [-t delimiter]\n",
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(int) strlen(progname), "");
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sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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" %*s [-u] [-v] type mapname\n",
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(int) strlen(progname), "");
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exit(EX_USAGE);
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}
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int
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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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char *cfile;
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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 allowempty = false;
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bool verbose = false;
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bool foldcase = true;
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bool unmake = false;
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char sep = '\0';
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char comment = '#';
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int exitstat;
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int opt;
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char *typename = NULL;
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char *mapname = NULL;
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unsigned int lineno;
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int st;
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int mode;
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int smode;
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int putflags = 0;
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long sff = SFF_ROOTOK|SFF_REGONLY;
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struct passwd *pw;
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SMDB_DATABASE *database;
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SMDB_CURSOR *cursor;
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SMDB_DBENT db_key, db_val;
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SMDB_DBPARAMS params;
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SMDB_USER_INFO user_info;
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char ibuf[BUFSIZE];
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#if HASFCHOWN
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SM_FILE_T *cfp;
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char buf[MAXLINE];
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#endif /* HASFCHOWN */
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static char rnamebuf[MAXNAME]; /* holds RealUserName */
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extern char *optarg;
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extern int optind;
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memset(¶ms, '\0', sizeof params);
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params.smdbp_cache_size = 1024 * 1024;
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progname = strrchr(argv[0], '/');
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if (progname != NULL)
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progname++;
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else
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progname = argv[0];
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cfile = getcfname(0, 0, SM_GET_SENDMAIL_CF, NULL);
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clrbitmap(DontBlameSendmail);
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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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(void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof rnamebuf);
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else
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(void) sm_snprintf(rnamebuf, sizeof rnamebuf,
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"Unknown UID %d", (int) RealUid);
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RunAsUserName = RealUserName = rnamebuf;
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user_info.smdbu_id = RunAsUid;
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user_info.smdbu_group_id = RunAsGid;
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(void) sm_strlcpy(user_info.smdbu_name, RunAsUserName,
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SMDB_MAX_USER_NAME_LEN);
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#define OPTIONS "C:D:Nc:deflorst:uv"
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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 'C':
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cfile = optarg;
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break;
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case 'N':
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inclnull = true;
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break;
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case 'c':
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params.smdbp_cache_size = atol(optarg);
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break;
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case 'd':
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params.smdbp_allow_dup = true;
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break;
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case 'e':
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allowempty = 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 'D':
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comment = *optarg;
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break;
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case 'l':
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smdb_print_available_types();
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exit(EX_OK);
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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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case 's':
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setbitn(DBS_MAPINUNSAFEDIRPATH, DontBlameSendmail);
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setbitn(DBS_WRITEMAPTOHARDLINK, DontBlameSendmail);
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setbitn(DBS_WRITEMAPTOSYMLINK, DontBlameSendmail);
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setbitn(DBS_LINKEDMAPINWRITABLEDIR, DontBlameSendmail);
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break;
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case 't':
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if (optarg == NULL || *optarg == '\0')
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{
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sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"Invalid separator\n");
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break;
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}
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sep = *optarg;
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break;
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case 'u':
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unmake = true;
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break;
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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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usage(progname);
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/* NOTREACHED */
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}
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}
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if (!bitnset(DBS_WRITEMAPTOSYMLINK, DontBlameSendmail))
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sff |= SFF_NOSLINK;
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if (!bitnset(DBS_WRITEMAPTOHARDLINK, DontBlameSendmail))
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sff |= SFF_NOHLINK;
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if (!bitnset(DBS_LINKEDMAPINWRITABLEDIR, DontBlameSendmail))
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sff |= SFF_NOWLINK;
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argc -= optind;
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argv += optind;
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if (argc != 2)
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{
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usage(progname);
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/* NOTREACHED */
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}
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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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}
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#if HASFCHOWN
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/* Find TrustedUser value in sendmail.cf */
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if ((cfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, cfile, SM_IO_RDONLY,
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NULL)) == NULL)
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{
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sm_io_fprintf(smioerr, SM_TIME_DEFAULT, "makemap: %s: %s\n",
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cfile, sm_errstring(errno));
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exit(EX_NOINPUT);
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}
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while (sm_io_fgets(cfp, SM_TIME_DEFAULT, buf, sizeof(buf)) != NULL)
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{
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register char *b;
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if ((b = strchr(buf, '\n')) != NULL)
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*b = '\0';
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b = buf;
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switch (*b++)
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{
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case 'O': /* option */
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if (strncasecmp(b, " TrustedUser", 12) == 0 &&
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!(isascii(b[12]) && isalnum(b[12])))
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{
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b = strchr(b, '=');
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if (b == NULL)
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continue;
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while (isascii(*++b) && isspace(*b))
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continue;
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if (isascii(*b) && isdigit(*b))
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TrustedUid = atoi(b);
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else
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{
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TrustedUid = 0;
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pw = getpwnam(b);
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if (pw == NULL)
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(void) sm_io_fprintf(smioerr,
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SM_TIME_DEFAULT,
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"TrustedUser: unknown user %s\n", b);
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else
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TrustedUid = pw->pw_uid;
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}
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# ifdef UID_MAX
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if (TrustedUid > UID_MAX)
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{
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(void) sm_io_fprintf(smioerr,
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SM_TIME_DEFAULT,
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"TrustedUser: uid value (%ld) > UID_MAX (%ld)",
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(long) TrustedUid,
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(long) UID_MAX);
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TrustedUid = 0;
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}
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# endif /* UID_MAX */
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break;
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}
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default:
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continue;
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}
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}
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(void) sm_io_close(cfp, SM_TIME_DEFAULT);
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#endif /* HASFCHOWN */
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if (!params.smdbp_allow_dup && !allowreplace)
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putflags = SMDBF_NO_OVERWRITE;
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if (unmake)
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{
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mode = O_RDONLY;
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smode = S_IRUSR;
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}
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else
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{
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mode = O_RDWR;
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if (!notrunc)
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{
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mode |= O_CREAT|O_TRUNC;
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sff |= SFF_CREAT;
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}
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smode = S_IWUSR;
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}
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params.smdbp_num_elements = 4096;
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errno = smdb_open_database(&database, mapname, mode, smode, sff,
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typename, &user_info, ¶ms);
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if (errno != SMDBE_OK)
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{
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char *hint;
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if (errno == SMDBE_UNSUPPORTED_DB_TYPE &&
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(hint = smdb_db_definition(typename)) != NULL)
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: Need to recompile with -D%s for %s support\n",
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progname, hint, typename);
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else
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: error opening type %s map %s: %s\n",
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progname, typename, mapname,
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sm_errstring(errno));
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exit(EX_CANTCREAT);
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}
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(void) database->smdb_sync(database, 0);
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if (!unmake && geteuid() == 0 && TrustedUid != 0)
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{
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errno = database->smdb_set_owner(database, TrustedUid, -1);
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if (errno != SMDBE_OK)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"WARNING: ownership change on %s failed %s",
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mapname, sm_errstring(errno));
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}
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}
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/*
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** Copy the data
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*/
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exitstat = EX_OK;
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if (unmake)
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{
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errno = database->smdb_cursor(database, &cursor, 0);
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if (errno != SMDBE_OK)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: cannot make cursor for type %s map %s\n",
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progname, typename, mapname);
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exit(EX_SOFTWARE);
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}
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memset(&db_key, '\0', sizeof db_key);
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memset(&db_val, '\0', sizeof db_val);
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for (lineno = 0; ; lineno++)
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{
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errno = cursor->smdbc_get(cursor, &db_key, &db_val,
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SMDB_CURSOR_GET_NEXT);
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if (errno != SMDBE_OK)
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break;
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(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
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"%.*s%c%.*s\n",
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(int) db_key.size,
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(char *) db_key.data,
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(sep != '\0') ? sep : '\t',
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(int) db_val.size,
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(char *)db_val.data);
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}
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(void) cursor->smdbc_close(cursor);
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}
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else
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{
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lineno = 0;
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while (sm_io_fgets(smioin, SM_TIME_DEFAULT, ibuf, sizeof ibuf)
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!= 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 (!sm_io_eof(smioin))
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: %s: line %u: line too long (%ld bytes max)\n",
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progname, mapname, lineno,
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(long) sizeof ibuf);
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exitstat = EX_DATAERR;
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continue;
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}
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if (ibuf[0] == '\0' || ibuf[0] == comment)
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continue;
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if (sep == '\0' && isascii(ibuf[0]) && isspace(ibuf[0]))
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: %s: line %u: syntax error (leading space)\n",
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progname, mapname, lineno);
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exitstat = EX_DATAERR;
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continue;
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}
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memset(&db_key, '\0', sizeof db_key);
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memset(&db_val, '\0', sizeof db_val);
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db_key.data = ibuf;
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for (p = ibuf; *p != '\0' && !(ISSEP(*p)); p++)
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{
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if (foldcase && isascii(*p) && isupper(*p))
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*p = tolower(*p);
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}
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db_key.size = p - ibuf;
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if (inclnull)
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db_key.size++;
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if (*p != '\0')
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*p++ = '\0';
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while (*p != '\0' && ISSEP(*p))
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p++;
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if (!allowempty && *p == '\0')
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: %s: line %u: no RHS for LHS %s\n",
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progname, mapname, lineno,
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(char *) db_key.data);
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exitstat = EX_DATAERR;
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continue;
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}
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db_val.data = p;
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db_val.size = strlen(p);
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if (inclnull)
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db_val.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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(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
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"key=`%s', val=`%s'\n",
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(char *) db_key.data,
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(char *) db_val.data);
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}
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errno = database->smdb_put(database, &db_key, &db_val,
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putflags);
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switch (errno)
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{
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case SMDBE_KEY_EXIST:
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st = 1;
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break;
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case 0:
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st = 0;
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break;
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default:
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st = -1;
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break;
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}
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if (st < 0)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: %s: line %u: key %s: put error: %s\n",
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progname, mapname, lineno,
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(char *) db_key.data,
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sm_errstring(errno));
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exitstat = EX_IOERR;
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}
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else if (st > 0)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: %s: line %u: key %s: duplicate key\n",
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progname, mapname,
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lineno,
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(char *) db_key.data);
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exitstat = EX_DATAERR;
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}
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}
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}
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/*
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** Now close the database.
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*/
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errno = database->smdb_close(database);
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if (errno != SMDBE_OK)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"%s: close(%s): %s\n",
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progname, mapname, sm_errstring(errno));
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exitstat = EX_IOERR;
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}
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smdb_free_database(database);
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exit(exitstat);
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/* NOTREACHED */
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return exitstat;
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}
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