shadow/lib/pwio.c

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C
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#include <config.h>
#ident "$Id: pwio.c,v 1.16 2005/08/31 17:24:56 kloczek 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;
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);
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);
}