shadow/lib/groupio.c

219 lines
3.3 KiB
C

#include <config.h>
#include "rcsid.h"
RCSID("$Id: groupio.c,v 1.10 2001/08/14 21:10:36 malekith Exp $")
#include "prototypes.h"
#include "defines.h"
#include "commonio.h"
#include "groupio.h"
extern int putgrent(const struct group *, FILE *);
extern struct group *sgetgrent(const char *);
struct group *
__gr_dup(const struct group *grent)
{
struct group *gr;
int i;
if (!(gr = (struct group *) malloc(sizeof *gr)))
return NULL;
*gr = *grent;
if (!(gr->gr_name = strdup(grent->gr_name)))
return NULL;
if (!(gr->gr_passwd = strdup(grent->gr_passwd)))
return NULL;
for (i = 0; grent->gr_mem[i]; i++)
;
gr->gr_mem = (char **) malloc((i + 1) * sizeof(char *));
if (!gr->gr_mem)
return NULL;
for (i = 0; grent->gr_mem[i]; i++) {
gr->gr_mem[i] = strdup(grent->gr_mem[i]);
if (!gr->gr_mem[i])
return NULL;
}
gr->gr_mem[i] = NULL;
return gr;
}
static void *
group_dup(const void *ent)
{
const struct group *gr = ent;
return __gr_dup(gr);
}
static void
group_free(void *ent)
{
struct group *gr = ent;
free(gr->gr_name);
free(gr->gr_passwd);
while(*(gr->gr_mem)) {
free(*(gr->gr_mem));
gr->gr_mem++;
}
free(gr);
}
static const char *
group_getname(const void *ent)
{
const struct group *gr = ent;
return gr->gr_name;
}
static void *
group_parse(const char *line)
{
return (void *) sgetgrent(line);
}
static int
group_put(const void *ent, FILE *file)
{
const struct group *gr = ent;
return (putgrent(gr, file) == -1) ? -1 : 0;
}
static struct commonio_ops group_ops = {
group_dup,
group_free,
group_getname,
group_parse,
group_put,
fgetsx,
fputsx
};
static struct commonio_db group_db = {
GROUP_FILE, /* filename */
&group_ops, /* ops */
NULL, /* fp */
NULL, /* head */
NULL, /* tail */
NULL, /* cursor */
0, /* changed */
0, /* isopen */
0, /* locked */
0 /* readonly */
};
int
gr_name(const char *filename)
{
return commonio_setname(&group_db, filename);
}
int
gr_lock(void)
{
return commonio_lock(&group_db);
}
int
gr_open(int mode)
{
return commonio_open(&group_db, mode);
}
const struct group *
gr_locate(const char *name)
{
return commonio_locate(&group_db, name);
}
int
gr_update(const struct group *gr)
{
return commonio_update(&group_db, (const void *) gr);
}
int
gr_remove(const char *name)
{
return commonio_remove(&group_db, name);
}
int
gr_rewind(void)
{
return commonio_rewind(&group_db);
}
const struct group *
gr_next(void)
{
return commonio_next(&group_db);
}
int
gr_close(void)
{
return commonio_close(&group_db);
}
int
gr_unlock(void)
{
return commonio_unlock(&group_db);
}
void
__gr_set_changed(void)
{
group_db.changed = 1;
}
struct commonio_entry *
__gr_get_head(void)
{
return group_db.head;
}
struct commonio_db *
__gr_get_db(void)
{
return &group_db;
}
void
__gr_del_entry(const struct commonio_entry *ent)
{
commonio_del_entry(&group_db, ent);
}
static int
gr_cmp(const void *p1, const void *p2)
{
gid_t u1, u2;
if ((*(struct commonio_entry**)p1)->eptr == NULL)
return 1;
if ((*(struct commonio_entry**)p2)->eptr == NULL)
return -1;
u1 = ((struct group *)(*(struct commonio_entry**)p1)->eptr)->gr_gid;
u2 = ((struct group *)(*(struct commonio_entry**)p2)->eptr)->gr_gid;
if (u1 < u2)
return -1;
else if (u1 > u2)
return 1;
else
return 0;
}
/* Sort entries by gid */
int
gr_sort()
{
return commonio_sort(&group_db, gr_cmp);
}