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samba-mirror/source3/groupdb/groupfile.c
1999-12-13 13:27:58 +00:00

283 lines
7.2 KiB
C

/*
* Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup
* Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 675
* Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#ifdef USE_SMBPASS_DB
static int gp_file_lock_depth = 0;
extern int DEBUGLEVEL;
static char s_readbuf[1024];
/***************************************************************
Start to enumerate the grppasswd list. Returns a void pointer
to ensure no modification outside this module.
****************************************************************/
static void *startgrpfilepwent(BOOL update)
{
return startfilepwent(lp_smb_group_file(),
s_readbuf, sizeof(s_readbuf),
&gp_file_lock_depth, update);
}
/***************************************************************
End enumeration of the grppasswd list.
****************************************************************/
static void endgrpfilepwent(void *vp)
{
endfilepwent(vp, &gp_file_lock_depth);
}
/*************************************************************************
Return the current position in the grppasswd list as an SMB_BIG_UINT.
This must be treated as an opaque token.
*************************************************************************/
static SMB_BIG_UINT getgrpfilepwpos(void *vp)
{
return getfilepwpos(vp);
}
/*************************************************************************
Set the current position in the grppasswd list from an SMB_BIG_UINT.
This must be treated as an opaque token.
*************************************************************************/
static BOOL setgrpfilepwpos(void *vp, SMB_BIG_UINT tok)
{
return setfilepwpos(vp, tok);
}
static BOOL make_group_line(char *p, int max_len,
DOMAIN_GRP *grp,
DOMAIN_GRP_MEMBER **mem, int *num_mem)
{
int i;
int len;
len = slprintf(p, max_len-1, "%s:%s:%d:", grp->name, grp->comment, grp->rid);
if (len == -1)
{
DEBUG(0,("make_group_line: cannot create entry\n"));
return False;
}
p += len;
max_len -= len;
if (mem == NULL || num_mem == NULL)
{
return True;
}
for (i = 0; i < (*num_mem); i++)
{
len = strlen((*mem)[i].name);
p = safe_strcpy(p, (*mem)[i].name, max_len);
if (p == NULL)
{
DEBUG(0, ("make_group_line: out of space for groups!\n"));
return False;
}
max_len -= len;
if (i != (*num_mem)-1)
{
*p = ',';
p++;
max_len--;
}
}
return True;
}
/*************************************************************************
Routine to return the next entry in the smbdomaingroup list.
*************************************************************************/
static char *get_group_members(char *p, int *num_mem, DOMAIN_GRP_MEMBER **members)
{
fstring name;
if (num_mem == NULL || members == NULL)
{
return NULL;
}
(*num_mem) = 0;
(*members) = NULL;
while (next_token(&p, name, ",", sizeof(fstring)))
{
(*members) = Realloc((*members), ((*num_mem)+1) * sizeof(DOMAIN_GRP_MEMBER));
if ((*members) == NULL)
{
return NULL;
}
fstrcpy((*members)[(*num_mem)].name, name);
(*members)[(*num_mem)].attr = 0x07;
(*num_mem)++;
}
return p;
}
/*************************************************************************
Routine to return the next entry in the smbdomaingroup list.
*************************************************************************/
static DOMAIN_GRP *getgrpfilepwent(void *vp, DOMAIN_GRP_MEMBER **mem, int *num_mem)
{
/* Static buffers we will return. */
static DOMAIN_GRP gp_buf;
int gidval;
pstring linebuf;
char *p;
size_t linebuf_len;
gpdb_init_grp(&gp_buf);
/*
* Scan the file, a line at a time and check if the name matches.
*/
while ((linebuf_len = getfileline(vp, linebuf, sizeof(linebuf))) > 0)
{
/* get group name */
p = strncpyn(gp_buf.name, linebuf, sizeof(gp_buf.name), ':');
if (p == NULL)
{
DEBUG(0, ("getgrpfilepwent: malformed group entry (no :)\n"));
continue;
}
/* Go past ':' */
p++;
/* get group comment */
p = strncpyn(gp_buf.comment, p, sizeof(gp_buf.comment), ':');
if (p == NULL)
{
DEBUG(0, ("getgrpfilepwent: malformed group entry (no :)\n"));
continue;
}
/* Go past ':' */
p++;
/* Get group gid. */
p = Atoic(p, &gidval, ":");
if (p == NULL)
{
DEBUG(0, ("getgrpfilepwent: malformed group entry (no : after uid)\n"));
continue;
}
/* Go past ':' */
p++;
/* now get the user's groups. there are a maximum of 32 */
if (mem != NULL && num_mem != NULL)
{
(*mem) = NULL;
(*num_mem) = 0;
p = get_group_members(p, num_mem, mem);
if (p == NULL)
{
DEBUG(0, ("getgrpfilepwent: malformed group entry (no : after members)\n"));
}
}
/* ok, set up the static data structure and return it */
gp_buf.rid = pwdb_gid_to_group_rid((gid_t)gidval);
gp_buf.attr = 0x07;
make_group_line(linebuf, sizeof(linebuf), &gp_buf, mem, num_mem);
DEBUG(10,("line: '%s'\n", linebuf));
return &gp_buf;
}
DEBUG(5,("getgrpfilepwent: end of file reached.\n"));
return NULL;
}
/************************************************************************
Routine to add an entry to the grppasswd file.
*************************************************************************/
static BOOL add_grpfilegrp_entry(DOMAIN_GRP *newgrp)
{
DEBUG(0, ("add_grpfilegrp_entry: NOT IMPLEMENTED\n"));
return False;
}
/************************************************************************
Routine to search the grppasswd file for an entry matching the groupname.
and then modify its group entry. We can't use the startgrppwent()/
getgrppwent()/endgrppwent() interfaces here as we depend on looking
in the actual file to decide how much room we have to write data.
override = False, normal
override = True, override XXXXXXXX'd out group or NO PASS
************************************************************************/
static BOOL mod_grpfilegrp_entry(DOMAIN_GRP* grp)
{
DEBUG(0, ("mod_grpfilegrp_entry: NOT IMPLEMENTED\n"));
return False;
}
static struct groupdb_ops file_ops =
{
startgrpfilepwent,
endgrpfilepwent,
getgrpfilepwpos,
setgrpfilepwpos,
iterate_getgroupnam, /* In groupdb.c */
iterate_getgroupgid, /* In groupdb.c */
iterate_getgrouprid, /* In groupdb.c */
getgrpfilepwent,
add_grpfilegrp_entry,
mod_grpfilegrp_entry,
iterate_getusergroupsnam /* in groupdb.c */
};
struct groupdb_ops *file_initialise_group_db(void)
{
return &file_ops;
}
#else
/* Do *NOT* make this function static. It breaks the compile on gcc. JRA */
void grppass_dummy_function(void) { } /* stop some compilers complaining */
#endif /* USE_SMBPASS_DB */