shadow/lib/sgroupio.c

#include <config.h>

#ifdef SHADOWGRP

#include "rcsid.h"
RCSID ("$Id: sgroupio.c,v 1.13 2005/03/31 05:14:49 kloczek Exp $")
#include "prototypes.h"
#include "defines.h"
#include "commonio.h"
#include "sgroupio.h"
extern int putsgent (const struct sgrp *, FILE *);
extern struct sgrp *sgetsgent (const char *);

struct sgrp *__sgr_dup (const struct sgrp *sgent)
{
	struct sgrp *sg;
	int i;

	if (!(sg = (struct sgrp *) malloc (sizeof *sg)))
		return NULL;
	*sg = *sgent;
	if (!(sg->sg_name = strdup (sgent->sg_name)))
		return NULL;
	if (!(sg->sg_passwd = strdup (sgent->sg_passwd)))
		return NULL;

	for (i = 0; sgent->sg_adm[i]; i++);
	sg->sg_adm = (char **) malloc ((i + 1) * sizeof (char *));
	if (!sg->sg_adm)
		return NULL;
	for (i = 0; sgent->sg_adm[i]; i++) {
		sg->sg_adm[i] = strdup (sgent->sg_adm[i]);
		if (!sg->sg_adm[i])
			return NULL;
	}
	sg->sg_adm[i] = NULL;

	for (i = 0; sgent->sg_mem[i]; i++);
	sg->sg_mem = (char **) malloc ((i + 1) * sizeof (char *));
	if (!sg->sg_mem)
		return NULL;
	for (i = 0; sgent->sg_mem[i]; i++) {
		sg->sg_mem[i] = strdup (sgent->sg_mem[i]);
		if (!sg->sg_mem[i])
			return NULL;
	}
	sg->sg_mem[i] = NULL;

	return sg;
}

static void *gshadow_dup (const void *ent)
{
	const struct sgrp *sg = ent;

	return __sgr_dup (sg);
}

static void gshadow_free (void *ent)
{
	struct sgrp *sg = ent;

	free (sg->sg_name);
	free (sg->sg_passwd);
	while (*(sg->sg_adm)) {
		free (*(sg->sg_adm));
		sg->sg_adm++;
	}
	while (*(sg->sg_mem)) {
		free (*(sg->sg_mem));
		sg->sg_mem++;
	}
	free (sg);
}

static const char *gshadow_getname (const void *ent)
{
	const struct sgrp *gr = ent;

	return gr->sg_name;
}

static void *gshadow_parse (const char *line)
{
	return (void *) sgetsgent (line);
}

static int gshadow_put (const void *ent, FILE * file)
{
	const struct sgrp *sg = ent;

	return (putsgent (sg, file) == -1) ? -1 : 0;
}

static struct commonio_ops gshadow_ops = {
	gshadow_dup,
	gshadow_free,
	gshadow_getname,
	gshadow_parse,
	gshadow_put,
	fgetsx,
	fputsx
};

static struct commonio_db gshadow_db = {
	SGROUP_FILE,		/* filename */
	&gshadow_ops,		/* ops */
	NULL,			/* fp */
	NULL,			/* head */
	NULL,			/* tail */
	NULL,			/* cursor */
	0,			/* changed */
	0,			/* isopen */
	0,			/* locked */
	0			/* readonly */
};

int sgr_name (const char *filename)
{
	return commonio_setname (&gshadow_db, filename);
}

int sgr_file_present (void)
{
	return commonio_present (&gshadow_db);
}

int sgr_lock (void)
{
	return commonio_lock (&gshadow_db);
}

int sgr_open (int mode)
{
	return commonio_open (&gshadow_db, mode);
}

const struct sgrp *sgr_locate (const char *name)
{
	return commonio_locate (&gshadow_db, name);
}

int sgr_update (const struct sgrp *sg)
{
	return commonio_update (&gshadow_db, (const void *) sg);
}

int sgr_remove (const char *name)
{
	return commonio_remove (&gshadow_db, name);
}

int sgr_rewind (void)
{
	return commonio_rewind (&gshadow_db);
}

const struct sgrp *sgr_next (void)
{
	return commonio_next (&gshadow_db);
}

int sgr_close (void)
{
	return commonio_close (&gshadow_db);
}

int sgr_unlock (void)
{
	return commonio_unlock (&gshadow_db);
}

void __sgr_set_changed (void)
{
	gshadow_db.changed = 1;
}

struct commonio_entry *__sgr_get_head (void)
{
	return gshadow_db.head;
}

void __sgr_del_entry (const struct commonio_entry *ent)
{
	commonio_del_entry (&gshadow_db, ent);
}

/* Sort with respect to group ordering. */
int sgr_sort ()
{
	extern struct commonio_db *__gr_get_db ();

	return commonio_sort_wrt (&gshadow_db, __gr_get_db ());
}
#else
extern int errno;		/* warning: ANSI C forbids an empty source file */
#endif