423 lines
8.4 KiB
C
423 lines
8.4 KiB
C
/*
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* Copyright (c) 1998-2002, 2004 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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#ifndef lint
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SM_UNUSED(static char copyright[]) =
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"@(#) Copyright (c) 1998-2001 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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#endif /* ! lint */
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#ifndef lint
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SM_UNUSED(static char id[]) = "@(#)$Id: editmap.c,v 1.24 2004/08/03 18:40:10 ca Exp $";
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#endif /* ! lint */
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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 <assert.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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uid_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) (isascii(c) && isspace(c))
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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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fprintf(stderr,
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"Usage: %s [-C cffile] [-N] [-f] [-q|-u|-x] maptype mapname key [ \"value ...\" ]\n",
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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 verbose = false;
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bool query = false;
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bool update = false;
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bool remove = false;
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bool inclnull = false;
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bool foldcase = true;
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unsigned int nops = 0;
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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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char *keyname = NULL;
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char *value = NULL;
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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_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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#if HASFCHOWN
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FILE *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 = _PATH_SENDMAILCF;
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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:fquxvN"
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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 'f':
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foldcase = false;
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break;
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case 'q':
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query = true;
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nops++;
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break;
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case 'u':
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update = true;
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nops++;
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break;
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case 'x':
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remove = true;
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nops++;
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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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case 'N':
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inclnull = true;
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break;
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default:
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usage(progname);
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assert(0); /* 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 ((nops != 1) ||
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(query && argc != 3) ||
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(remove && argc != 3) ||
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(update && argc <= 3))
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{
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usage(progname);
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assert(0); /* NOTREACHED */
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}
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typename = argv[0];
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mapname = argv[1];
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keyname = argv[2];
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if (update)
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value = argv[3];
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if (foldcase)
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{
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char *p;
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for (p = keyname; *p != '\0'; p++)
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{
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if (isascii(*p) && isupper(*p))
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*p = tolower(*p);
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}
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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 = fopen(cfile, "r")) == NULL)
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{
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fprintf(stderr, "%s: %s: %s\n", progname,
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cfile, sm_errstring(errno));
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exit(EX_NOINPUT);
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}
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while (fgets(buf, sizeof(buf), cfp) != 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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fprintf(stderr,
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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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fprintf(stderr,
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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) fclose(cfp);
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#endif /* HASFCHOWN */
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if (query)
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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 | O_CREAT;
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sff |= SFF_CREAT|SFF_NOTEXCL;
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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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fprintf(stderr,
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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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fprintf(stderr,
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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 (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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fprintf(stderr,
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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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exitstat = EX_OK;
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if (query)
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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 = keyname;
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db_key.size = strlen(keyname);
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if (inclnull)
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db_key.size++;
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errno = database->smdb_get(database, &db_key, &db_val, 0);
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if (errno != SMDBE_OK)
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{
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/* XXX - Need to distinguish between not found */
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fprintf(stderr,
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"%s: couldn't find key %s in map %s\n",
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progname, keyname, mapname);
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exitstat = EX_UNAVAILABLE;
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}
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else
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{
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printf("%.*s\n", (int) db_val.size,
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(char *) db_val.data);
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}
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}
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else if (update)
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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 = keyname;
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db_key.size = strlen(keyname);
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if (inclnull)
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db_key.size++;
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db_val.data = value;
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db_val.size = strlen(value);
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if (inclnull)
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db_val.size++;
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errno = database->smdb_put(database, &db_key, &db_val,
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putflags);
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if (errno != SMDBE_OK)
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{
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fprintf(stderr,
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"%s: error updating (%s, %s) in map %s: %s\n",
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progname, keyname, value, mapname,
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sm_errstring(errno));
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exitstat = EX_IOERR;
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}
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}
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else if (remove)
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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 = keyname;
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db_key.size = strlen(keyname);
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if (inclnull)
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db_key.size++;
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errno = database->smdb_del(database, &db_key, 0);
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switch (errno)
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{
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case SMDBE_NOT_FOUND:
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fprintf(stderr,
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"%s: key %s doesn't exist in map %s\n",
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progname, keyname, mapname);
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/* Don't set exitstat */
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break;
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case SMDBE_OK:
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/* All's well */
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break;
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default:
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fprintf(stderr,
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"%s: couldn't remove key %s in map %s (error)\n",
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progname, keyname, mapname);
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exitstat = EX_IOERR;
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break;
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}
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}
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else
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{
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assert(0); /* NOT REACHED */
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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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fprintf(stderr, "%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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