shadow/lib/pwio.c

221 lines
3.5 KiB
C

#include <config.h>
#include "rcsid.h"
RCSID("$Id: pwio.c,v 1.12 2001/08/14 21:10:36 malekith Exp $")
#include "prototypes.h"
#include "defines.h"
#include <pwd.h>
#include <stdio.h>
#include "commonio.h"
#include "pwio.h"
extern struct passwd *sgetpwent(const char *);
extern int putpwent(const struct passwd *, FILE *);
struct passwd *
__pw_dup(const struct passwd *pwent)
{
struct passwd *pw;
if (!(pw = (struct passwd *) malloc(sizeof *pw)))
return NULL;
*pw = *pwent;
if (!(pw->pw_name = strdup(pwent->pw_name)))
return NULL;
if (!(pw->pw_passwd = strdup(pwent->pw_passwd)))
return NULL;
#ifdef ATT_AGE
if (!(pw->pw_age = strdup(pwent->pw_age)))
return NULL;
#endif
#ifdef ATT_COMMENT
if (!(pw->pw_comment = strdup(pwent->pw_comment)))
return NULL;
#endif
if (!(pw->pw_gecos = strdup(pwent->pw_gecos)))
return NULL;
if (!(pw->pw_dir = strdup(pwent->pw_dir)))
return NULL;
if (!(pw->pw_shell = strdup(pwent->pw_shell)))
return NULL;
return pw;
}
static void *
passwd_dup(const void *ent)
{
const struct passwd *pw = ent;
return __pw_dup(pw);
}
static void
passwd_free(void *ent)
{
struct passwd *pw = ent;
free(pw->pw_name);
free(pw->pw_passwd);
#ifdef ATT_AGE
free(pw->pw_age);
#endif
#ifdef ATT_COMMENT
free(pw->pw_comment);
#endif
free(pw->pw_gecos);
free(pw->pw_dir);
free(pw->pw_shell);
free(pw);
}
static const char *
passwd_getname(const void *ent)
{
const struct passwd *pw = ent;
return pw->pw_name;
}
static void *
passwd_parse(const char *line)
{
return (void *) sgetpwent(line);
}
static int
passwd_put(const void *ent, FILE *file)
{
const struct passwd *pw = ent;
return (putpwent(pw, file) == -1) ? -1 : 0;
}
static struct commonio_ops passwd_ops = {
passwd_dup,
passwd_free,
passwd_getname,
passwd_parse,
passwd_put,
fgets,
fputs
};
static struct commonio_db passwd_db = {
PASSWD_FILE, /* filename */
&passwd_ops, /* ops */
NULL, /* fp */
NULL, /* head */
NULL, /* tail */
NULL, /* cursor */
0, /* changed */
0, /* isopen */
0, /* locked */
0 /* readonly */
};
int
pw_name(const char *filename)
{
return commonio_setname(&passwd_db, filename);
}
int
pw_lock(void)
{
return commonio_lock(&passwd_db);
}
int
pw_open(int mode)
{
return commonio_open(&passwd_db, mode);
}
const struct passwd *
pw_locate(const char *name)
{
return commonio_locate(&passwd_db, name);
}
int
pw_update(const struct passwd *pw)
{
return commonio_update(&passwd_db, (const void *) pw);
}
int
pw_remove(const char *name)
{
return commonio_remove(&passwd_db, name);
}
int
pw_rewind(void)
{
return commonio_rewind(&passwd_db);
}
const struct passwd *
pw_next(void)
{
return commonio_next(&passwd_db);
}
int
pw_close(void)
{
return commonio_close(&passwd_db);
}
int
pw_unlock(void)
{
return commonio_unlock(&passwd_db);
}
struct commonio_entry *
__pw_get_head(void)
{
return passwd_db.head;
}
void
__pw_del_entry(const struct commonio_entry *ent)
{
commonio_del_entry(&passwd_db, ent);
}
struct commonio_db *
__pw_get_db(void)
{
return &passwd_db;
}
static int
pw_cmp(const void *p1, const void *p2)
{
uid_t u1, u2;
if ((*(struct commonio_entry**)p1)->eptr == NULL)
return 1;
if ((*(struct commonio_entry**)p2)->eptr == NULL)
return -1;
u1 = ((struct passwd *)(*(struct commonio_entry**)p1)->eptr)->pw_uid;
u2 = ((struct passwd *)(*(struct commonio_entry**)p2)->eptr)->pw_uid;
if (u1 < u2)
return -1;
else if (u1 > u2)
return 1;
else
return 0;
}
/* Sort entries by uid */
int
pw_sort()
{
return commonio_sort(&passwd_db, pw_cmp);
}