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/*
* Copyright (c) 2007 Vreixo Formoso
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See COPYING file for details.
*/
#include "libisofs.h"
#include "image.h"
#include "node.h"
#include "messages.h"
#include "eltorito.h"
#include <stdlib.h>
#include <string.h>
/**
* Create a new image, empty.
*
* The image will be owned by you and should be unref() when no more needed.
*
* @param name
* Name of the image. This will be used as volset_id and volume_id.
* @param image
* Location where the image pointer will be stored.
* @return
* 1 sucess, < 0 error
*/
int iso_image_new(const char *name, IsoImage **image)
{
int res;
IsoImage *img;
if (image == NULL) {
return ISO_NULL_POINTER;
}
img = calloc(1, sizeof(IsoImage));
if (img == NULL) {
return ISO_OUT_OF_MEM;
}
/* local filesystem will be used by default */
res = iso_local_filesystem_new(&(img->fs));
if (res < 0) {
free(img);
return ISO_OUT_OF_MEM;
}
/* use basic builder as default */
res = iso_node_basic_builder_new(&(img->builder));
if (res < 0) {
iso_filesystem_unref(img->fs);
free(img);
return ISO_OUT_OF_MEM;
}
/* fill image fields */
res = iso_node_new_root(&img->root);
if (res < 0) {
iso_node_builder_unref(img->builder);
iso_filesystem_unref(img->fs);
free(img);
return res;
}
img->refcount = 1;
img->id = iso_message_id++;
if (name != NULL) {
img->volset_id = strdup(name);
img->volume_id = strdup(name);
}
*image = img;
return ISO_SUCCESS;
}
/**
* Increments the reference counting of the given image.
*/
void iso_image_ref(IsoImage *image)
{
++image->refcount;
}
/**
* Decrements the reference couting of the given image.
* If it reaches 0, the image is free, together with its tree nodes (whether
* their refcount reach 0 too, of course).
*/
void iso_image_unref(IsoImage *image)
{
if (--image->refcount == 0) {
int nexcl;
/* we need to free the image */
if (image->user_data_free != NULL) {
/* free attached data */
image->user_data_free(image->user_data);
}
for (nexcl = 0; nexcl < image->nexcludes; ++nexcl) {
free(image->excludes[nexcl]);
}
free(image->excludes);
iso_node_unref((IsoNode*)image->root);
iso_node_builder_unref(image->builder);
iso_filesystem_unref(image->fs);
el_torito_boot_catalog_free(image->bootcat);
free(image->volset_id);
free(image->volume_id);
free(image->publisher_id);
free(image->data_preparer_id);
free(image->system_id);
free(image->application_id);
free(image->copyright_file_id);
free(image->abstract_file_id);
free(image->biblio_file_id);
free(image);
}
}
/**
* Attach user defined data to the image. Use this if your application needs
* to store addition info together with the IsoImage. If the image already
* has data attached, the old data will be freed.
*
* @param data
* Pointer to application defined data that will be attached to the
* image. You can pass NULL to remove any already attached data.
* @param give_up
* Function that will be called when the image does not need the data
* any more. It receives the data pointer as an argumente, and eventually
* causes data to be free. It can be NULL if you don't need it.
*/
int iso_image_attach_data(IsoImage *image, void *data, void (*give_up)(void*))
{
if (image == NULL || (data != NULL && free == NULL)) {
return ISO_NULL_POINTER;
}
if (image->user_data != NULL) {
/* free previously attached data */
if (image->user_data_free) {
image->user_data_free(image->user_data);
}
image->user_data = NULL;
image->user_data_free = NULL;
}
if (data != NULL) {
image->user_data = data;
image->user_data_free = give_up;
}
return ISO_SUCCESS;
}
/**
* The the data previously attached with iso_image_attach_data()
*/
void *iso_image_get_attached_data(IsoImage *image)
{
return image->user_data;
}
IsoDir *iso_image_get_root(const IsoImage *image)
{
return image->root;
}
void iso_image_set_volset_id(IsoImage *image, const char *volset_id)
{
free(image->volset_id);
image->volset_id = strdup(volset_id);
}
const char *iso_image_get_volset_id(const IsoImage *image)
{
return image->volset_id;
}
void iso_image_set_volume_id(IsoImage *image, const char *volume_id)
{
free(image->volume_id);
image->volume_id = strdup(volume_id);
}
const char *iso_image_get_volume_id(const IsoImage *image)
{
return image->volume_id;
}
void iso_image_set_publisher_id(IsoImage *image, const char *publisher_id)
{
free(image->publisher_id);
image->publisher_id = strdup(publisher_id);
}
const char *iso_image_get_publisher_id(const IsoImage *image)
{
return image->publisher_id;
}
void iso_image_set_data_preparer_id(IsoImage *image,
const char *data_preparer_id)
{
free(image->data_preparer_id);
image->data_preparer_id = strdup(data_preparer_id);
}
const char *iso_image_get_data_preparer_id(const IsoImage *image)
{
return image->data_preparer_id;
}
void iso_image_set_system_id(IsoImage *image, const char *system_id)
{
free(image->system_id);
image->system_id = strdup(system_id);
}
const char *iso_image_get_system_id(const IsoImage *image)
{
return image->system_id;
}
void iso_image_set_application_id(IsoImage *image, const char *application_id)
{
free(image->application_id);
image->application_id = strdup(application_id);
}
const char *iso_image_get_application_id(const IsoImage *image)
{
return image->application_id;
}
void iso_image_set_copyright_file_id(IsoImage *image,
const char *copyright_file_id)
{
free(image->copyright_file_id);
image->copyright_file_id = strdup(copyright_file_id);
}
const char *iso_image_get_copyright_file_id(const IsoImage *image)
{
return image->copyright_file_id;
}
void iso_image_set_abstract_file_id(IsoImage *image,
const char *abstract_file_id)
{
free(image->abstract_file_id);
image->abstract_file_id = strdup(abstract_file_id);
}
const char *iso_image_get_abstract_file_id(const IsoImage *image)
{
return image->abstract_file_id;
}
void iso_image_set_biblio_file_id(IsoImage *image, const char *biblio_file_id)
{
free(image->biblio_file_id);
image->biblio_file_id = strdup(biblio_file_id);
}
const char *iso_image_get_biblio_file_id(const IsoImage *image)
{
return image->biblio_file_id;
}
int iso_image_get_msg_id(IsoImage *image)
{
return image->id;
}