freebsd-dev/contrib/sendmail/makemap/makemap.c
2002-02-17 21:58:34 +00:00

528 lines
11 KiB
C

/*
* Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers.
* All rights reserved.
* Copyright (c) 1992 Eric P. Allman. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*
*/
#include <sm/gen.h>
SM_IDSTR(copyright,
"@(#) Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers.\n\
All rights reserved.\n\
Copyright (c) 1992 Eric P. Allman. All rights reserved.\n\
Copyright (c) 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n")
SM_IDSTR(id, "@(#)$Id: makemap.c,v 8.175 2001/12/28 22:44:01 ca Exp $")
/* $FreeBSD$ */
#include <sys/types.h>
#ifndef ISC_UNIX
# include <sys/file.h>
#endif /* ! ISC_UNIX */
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef EX_OK
# undef EX_OK /* unistd.h may have another use for this */
#endif /* EX_OK */
#include <sysexits.h>
#include <sendmail/sendmail.h>
#include <sendmail/pathnames.h>
#include <libsmdb/smdb.h>
uid_t RealUid;
gid_t RealGid;
char *RealUserName;
uid_t RunAsUid;
uid_t RunAsGid;
char *RunAsUserName;
int Verbose = 2;
bool DontInitGroups = false;
uid_t TrustedUid = 0;
BITMAP256 DontBlameSendmail;
#define BUFSIZE 1024
#define ISSEP(c) (sep == '\0' ? isascii(c) && isspace(c) : (c) == sep)
static void
usage(progname)
char *progname;
{
/* XXX break the usage output into multiple lines? it's too long */
sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"Usage: %s [-C cffile] [-N] [-c cachesize] [-d] [-e] [-f] [-l] [-o] [-r] [-s] [-t delimiter] [-u] [-v] type mapname\n",
progname);
#if _FFR_COMMENT_CHAR
/* add -D comment-char */
#endif /* _FFR_COMMENT_CHAR */
exit(EX_USAGE);
}
int
main(argc, argv)
int argc;
char **argv;
{
char *progname;
char *cfile;
bool inclnull = false;
bool notrunc = false;
bool allowreplace = false;
bool allowempty = false;
bool verbose = false;
bool foldcase = true;
bool unmake = false;
char sep = '\0';
char comment = '#';
int exitstat;
int opt;
char *typename = NULL;
char *mapname = NULL;
unsigned int lineno;
int st;
int mode;
int smode;
int putflags = 0;
long sff = SFF_ROOTOK|SFF_REGONLY;
struct passwd *pw;
SMDB_DATABASE *database;
SMDB_CURSOR *cursor;
SMDB_DBENT db_key, db_val;
SMDB_DBPARAMS params;
SMDB_USER_INFO user_info;
char ibuf[BUFSIZE];
#if HASFCHOWN
SM_FILE_T *cfp;
char buf[MAXLINE];
#endif /* HASFCHOWN */
static char rnamebuf[MAXNAME]; /* holds RealUserName */
extern char *optarg;
extern int optind;
memset(&params, '\0', sizeof params);
params.smdbp_cache_size = 1024 * 1024;
progname = strrchr(argv[0], '/');
if (progname != NULL)
progname++;
else
progname = argv[0];
cfile = getcfname(0, 0, SM_GET_SENDMAIL_CF, NULL);
clrbitmap(DontBlameSendmail);
RunAsUid = RealUid = getuid();
RunAsGid = RealGid = getgid();
pw = getpwuid(RealUid);
if (pw != NULL)
(void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof rnamebuf);
else
(void) sm_snprintf(rnamebuf, sizeof rnamebuf,
"Unknown UID %d", (int) RealUid);
RunAsUserName = RealUserName = rnamebuf;
user_info.smdbu_id = RunAsUid;
user_info.smdbu_group_id = RunAsGid;
(void) sm_strlcpy(user_info.smdbu_name, RunAsUserName,
SMDB_MAX_USER_NAME_LEN);
#define OPTIONS "C:D:Nc:deflorst:uv"
while ((opt = getopt(argc, argv, OPTIONS)) != -1)
{
switch (opt)
{
case 'C':
cfile = optarg;
break;
case 'N':
inclnull = true;
break;
case 'c':
params.smdbp_cache_size = atol(optarg);
break;
case 'd':
params.smdbp_allow_dup = true;
break;
case 'e':
allowempty = true;
break;
case 'f':
foldcase = false;
break;
#if _FFR_COMMENT_CHAR
case 'D':
comment = *optarg;
break;
#endif /* _FFR_COMMENT_CHAR */
case 'l':
smdb_print_available_types();
exit(EX_OK);
break;
case 'o':
notrunc = true;
break;
case 'r':
allowreplace = true;
break;
case 's':
setbitn(DBS_MAPINUNSAFEDIRPATH, DontBlameSendmail);
setbitn(DBS_WRITEMAPTOHARDLINK, DontBlameSendmail);
setbitn(DBS_WRITEMAPTOSYMLINK, DontBlameSendmail);
setbitn(DBS_LINKEDMAPINWRITABLEDIR, DontBlameSendmail);
break;
case 't':
if (optarg == NULL || *optarg == '\0')
{
sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"Invalid separator\n");
break;
}
sep = *optarg;
break;
case 'u':
unmake = true;
break;
case 'v':
verbose = true;
break;
default:
usage(progname);
/* NOTREACHED */
}
}
if (!bitnset(DBS_WRITEMAPTOSYMLINK, DontBlameSendmail))
sff |= SFF_NOSLINK;
if (!bitnset(DBS_WRITEMAPTOHARDLINK, DontBlameSendmail))
sff |= SFF_NOHLINK;
if (!bitnset(DBS_LINKEDMAPINWRITABLEDIR, DontBlameSendmail))
sff |= SFF_NOWLINK;
argc -= optind;
argv += optind;
if (argc != 2)
{
usage(progname);
/* NOTREACHED */
}
else
{
typename = argv[0];
mapname = argv[1];
}
#if HASFCHOWN
/* Find TrustedUser value in sendmail.cf */
if ((cfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, cfile, SM_IO_RDONLY,
NULL)) == NULL)
{
sm_io_fprintf(smioerr, SM_TIME_DEFAULT, "makemap: %s: %s",
cfile, sm_errstring(errno));
exit(EX_NOINPUT);
}
while (sm_io_fgets(cfp, SM_TIME_DEFAULT, buf, sizeof(buf)) != NULL)
{
register char *b;
if ((b = strchr(buf, '\n')) != NULL)
*b = '\0';
b = buf;
switch (*b++)
{
case 'O': /* option */
if (strncasecmp(b, " TrustedUser", 12) == 0 &&
!(isascii(b[12]) && isalnum(b[12])))
{
b = strchr(b, '=');
if (b == NULL)
continue;
while (isascii(*++b) && isspace(*b))
continue;
if (isascii(*b) && isdigit(*b))
TrustedUid = atoi(b);
else
{
TrustedUid = 0;
pw = getpwnam(b);
if (pw == NULL)
(void) sm_io_fprintf(smioerr,
SM_TIME_DEFAULT,
"TrustedUser: unknown user %s\n", b);
else
TrustedUid = pw->pw_uid;
}
# ifdef UID_MAX
if (TrustedUid > UID_MAX)
{
(void) sm_io_fprintf(smioerr,
SM_TIME_DEFAULT,
"TrustedUser: uid value (%ld) > UID_MAX (%ld)",
(long) TrustedUid,
(long) UID_MAX);
TrustedUid = 0;
}
# endif /* UID_MAX */
break;
}
default:
continue;
}
}
(void) sm_io_close(cfp, SM_TIME_DEFAULT);
#endif /* HASFCHOWN */
if (!params.smdbp_allow_dup && !allowreplace)
putflags = SMDBF_NO_OVERWRITE;
if (unmake)
{
mode = O_RDONLY;
smode = S_IRUSR;
}
else
{
mode = O_RDWR;
if (!notrunc)
{
mode |= O_CREAT|O_TRUNC;
sff |= SFF_CREAT;
}
smode = S_IWUSR;
}
params.smdbp_num_elements = 4096;
errno = smdb_open_database(&database, mapname, mode, smode, sff,
typename, &user_info, &params);
if (errno != SMDBE_OK)
{
char *hint;
if (errno == SMDBE_UNSUPPORTED_DB_TYPE &&
(hint = smdb_db_definition(typename)) != NULL)
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: Need to recompile with -D%s for %s support\n",
progname, hint, typename);
else
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: error opening type %s map %s: %s\n",
progname, typename, mapname,
sm_errstring(errno));
exit(EX_CANTCREAT);
}
(void) database->smdb_sync(database, 0);
if (!unmake && geteuid() == 0 && TrustedUid != 0)
{
errno = database->smdb_set_owner(database, TrustedUid, -1);
if (errno != SMDBE_OK)
{
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"WARNING: ownership change on %s failed %s",
mapname, sm_errstring(errno));
}
}
/*
** Copy the data
*/
exitstat = EX_OK;
if (unmake)
{
errno = database->smdb_cursor(database, &cursor, 0);
if (errno != SMDBE_OK)
{
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: cannot make cursor for type %s map %s\n",
progname, typename, mapname);
exit(EX_SOFTWARE);
}
memset(&db_key, '\0', sizeof db_key);
memset(&db_val, '\0', sizeof db_val);
for (lineno = 0; ; lineno++)
{
errno = cursor->smdbc_get(cursor, &db_key, &db_val,
SMDB_CURSOR_GET_NEXT);
if (errno != SMDBE_OK)
break;
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"%.*s\t%.*s\n",
(int) db_key.size,
(char *) db_key.data,
(int) db_val.size,
(char *)db_val.data);
}
(void) cursor->smdbc_close(cursor);
}
else
{
lineno = 0;
while (sm_io_fgets(smioin, SM_TIME_DEFAULT, ibuf, sizeof ibuf)
!= NULL)
{
register char *p;
lineno++;
/*
** Parse the line.
*/
p = strchr(ibuf, '\n');
if (p != NULL)
*p = '\0';
else if (!sm_io_eof(smioin))
{
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: %s: line %u: line too long (%ld bytes max)\n",
progname, mapname, lineno,
(long) sizeof ibuf);
exitstat = EX_DATAERR;
continue;
}
if (ibuf[0] == '\0' || ibuf[0] == comment)
continue;
if (sep == '\0' && isascii(ibuf[0]) && isspace(ibuf[0]))
{
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: %s: line %u: syntax error (leading space)\n",
progname, mapname, lineno);
exitstat = EX_DATAERR;
continue;
}
memset(&db_key, '\0', sizeof db_key);
memset(&db_val, '\0', sizeof db_val);
db_key.data = ibuf;
for (p = ibuf; *p != '\0' && !(ISSEP(*p)); p++)
{
if (foldcase && isascii(*p) && isupper(*p))
*p = tolower(*p);
}
db_key.size = p - ibuf;
if (inclnull)
db_key.size++;
if (*p != '\0')
*p++ = '\0';
while (*p != '\0' && ISSEP(*p))
p++;
if (!allowempty && *p == '\0')
{
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: %s: line %u: no RHS for LHS %s\n",
progname, mapname, lineno,
(char *) db_key.data);
exitstat = EX_DATAERR;
continue;
}
db_val.data = p;
db_val.size = strlen(p);
if (inclnull)
db_val.size++;
/*
** Do the database insert.
*/
if (verbose)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"key=`%s', val=`%s'\n",
(char *) db_key.data,
(char *) db_val.data);
}
errno = database->smdb_put(database, &db_key, &db_val,
putflags);
switch (errno)
{
case SMDBE_KEY_EXIST:
st = 1;
break;
case 0:
st = 0;
break;
default:
st = -1;
break;
}
if (st < 0)
{
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: %s: line %u: key %s: put error: %s\n",
progname, mapname, lineno,
(char *) db_key.data,
sm_errstring(errno));
exitstat = EX_IOERR;
}
else if (st > 0)
{
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: %s: line %u: key %s: duplicate key\n",
progname, mapname,
lineno,
(char *) db_key.data);
exitstat = EX_DATAERR;
}
}
}
/*
** Now close the database.
*/
errno = database->smdb_close(database);
if (errno != SMDBE_OK)
{
(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
"%s: close(%s): %s\n",
progname, mapname, sm_errstring(errno));
exitstat = EX_IOERR;
}
smdb_free_database(database);
exit(exitstat);
/* NOTREACHED */
return exitstat;
}