You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

489 lines
13 KiB

/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
/* vim: set noet ts=8 sts=8 sw=8 : */
#include "joliet.h"
#include "ecma119.h"
#include "ecma119_tree.h"
#include "tree.h"
#include "util.h"
#include "volume.h"
#include "eltorito.h"
#include "messages.h"
#include <assert.h>
#include <string.h>
static struct joliet_tree_node*
create_node(struct ecma119_write_target *t,
struct joliet_tree_node *parent,
struct iso_tree_node *iso)
{
struct joliet_tree_node *ret =
calloc(1, sizeof(struct joliet_tree_node));
ret->name = iso_j_id(iso->name, t->input_charset);
ret->dirent_len = 34 + (ret->name ? ucslen(ret->name) * 2 : 0);
ret->parent = parent;
ret->target = t;
if ( ISO_ISDIR(iso) ) {
struct iso_tree_node_dir *dir = (struct iso_tree_node_dir *) iso;
ret->info.dir.children = calloc(sizeof(void*), dir->nchildren);
ret->type = JOLIET_DIR;
} else if (ISO_ISREG(iso)) {
/* it's a file */
struct iso_tree_node_file *iso_f = (struct iso_tree_node_file *) iso;
struct iso_file *file;
file = iso_file_table_lookup(t->file_table, iso_f);
if ( file == NULL ) {
file = iso_file_new(t, iso_f);
if (!file) {
/*
* That was an error.
* TODO currently this cause the file to be ignored... Maybe
* throw an error is a better alternative
*/
joliet_tree_free(ret);
return NULL;
}
iso_file_table_add_file(t->file_table, file);
}
ret->info.file = file;
ret->type = JOLIET_FILE;
} else if (ISO_ISBOOT(iso)) {
/* it's boot catalog info */
struct iso_tree_node_boot *boot = (struct iso_tree_node_boot*) iso;
ret->info.boot_img = boot->img;
ret->type = JOLIET_BOOT;
} else {
/* this should never happen */
assert(0);
}
return ret;
}
static struct joliet_tree_node*
create_tree(struct ecma119_write_target *t,
struct joliet_tree_node *parent,
struct iso_tree_node *iso)
{
struct joliet_tree_node *root;
assert(t && iso);
if ( iso->hide_flags & LIBISO_HIDE_ON_JOLIET )
return NULL;
switch (iso->type) {
case LIBISO_NODE_FILE:
case LIBISO_NODE_BOOT:
root = create_node(t, parent, iso);
break;
case LIBISO_NODE_DIR:
{
size_t i;
struct joliet_tree_node *node;
struct iso_tree_node_dir *dir;
root = create_node(t, parent, iso);
dir = (struct iso_tree_node_dir*)iso;
for (i = 0; i < dir->nchildren; ++i) {
node = create_tree(t, root, dir->children[i]);
if ( node != NULL ) {
root->info.dir.children[root->info.dir.nchildren++] = node;
}
}
}
break;
default:
{
char msg[512];
sprintf(msg, "Can't add %s to Joliet tree. This kind of files "
"can only be added to a Rock Ridget tree. Skipping", iso->name);
iso_msg_note(LIBISO_JOLIET_WRONG_FILE_TYPE, msg);
return NULL;
}
break;
}
return root;
}
static int
cmp_node(const void *f1, const void *f2)
{
struct joliet_tree_node *f = *((struct joliet_tree_node**)f1);
struct joliet_tree_node *g = *((struct joliet_tree_node**)f2);
return ucscmp(f->name, g->name);
}
static void
sort_tree(struct joliet_tree_node *root)
{
size_t i;
assert(root && (root->type == JOLIET_DIR));
qsort(root->info.dir.children, root->info.dir.nchildren,
sizeof(void*), cmp_node);
for (i = 0; i < root->info.dir.nchildren; i++) {
struct joliet_tree_node *child = root->info.dir.children[i];
if ( child->type == JOLIET_DIR )
sort_tree(child);
}
}
void
joliet_prepare_path_tables(struct ecma119_write_target *t)
{
size_t cur, i, j;
t->pathlist_joliet[0] = t->joliet_root;
t->path_table_size_joliet = 10; /* root directory record */
cur = 1;
for (i = 0; i < t->dirlist_len_joliet; i++) {
struct joliet_tree_node *dir = t->pathlist_joliet[i];
for (j = 0; j < dir->info.dir.nchildren; j++) {
struct joliet_tree_node *ch = dir->info.dir.children[j];
if (ch->type == JOLIET_DIR) {
size_t len = 8 + ucslen(ch->name)*2;
t->pathlist_joliet[cur++] = ch;
t->path_table_size_joliet += len;
}
}
}
}
/**
* Calculate the size of each directory.
*/
void
joliet_calc_dir_size(struct ecma119_write_target *t,
struct joliet_tree_node *root)
{
size_t i;
size_t newlen;
struct joliet_tree_node *ch;
assert(root && (root->type == JOLIET_DIR) );
t->dirlist_len_joliet++;
root->info.dir.len = 68; /* for "." and ".." entries */
for (i = 0; i < root->info.dir.nchildren; ++i) {
ch = root->info.dir.children[i];
newlen = root->info.dir.len + ch->dirent_len;
if ((newlen % 2048) < (root->info.dir.len % 2048)) {
root->info.dir.len = newlen + (2048 - (root->info.dir.len % 2048));
} else {
root->info.dir.len += ch->dirent_len;
}
if (ch->type == JOLIET_DIR)
joliet_calc_dir_size(t, ch);
}
t->total_dir_size_joliet += round_up (root->info.dir.len, t->block_size);
}
/**
* Calculate the position of each directory. Also fill out t->dirlist_joliet.
*/
void
joliet_calc_dir_pos(struct ecma119_write_target *t,
struct joliet_tree_node *root)
{
size_t i;
struct joliet_tree_node *ch;
assert(root && (root->type == JOLIET_DIR));
root->info.dir.block = t->curblock;
t->curblock += div_up(root->info.dir.len, t->block_size);
t->dirlist_joliet[t->curfile++] = root;
for (i = 0; i < root->info.dir.nchildren; i++) {
ch = root->info.dir.children[i];
if (ch->type == JOLIET_DIR)
joliet_calc_dir_pos(t, ch);
}
}
struct joliet_tree_node*
joliet_tree_create(struct ecma119_write_target *t,
struct iso_tree_node *iso_root)
{
struct joliet_tree_node *root = create_tree(t, NULL, iso_root);
sort_tree(root);
return root;
}
void
joliet_tree_free(struct joliet_tree_node *root)
{
size_t i;
if (root->type == JOLIET_DIR) {
for (i=0; i < root->info.dir.nchildren; i++) {
joliet_tree_free(root->info.dir.children[i]);
}
free(root->info.dir.children);
}
free(root->name);
free(root);
}
/* ugh. this is mostly C&P */
static void
write_path_table(struct ecma119_write_target *t,
int l_type,
uint8_t *buf)
{
void (*write_int)(uint8_t*, uint32_t, int) = l_type ?
iso_lsb : iso_msb;
size_t i;
struct ecma119_path_table_record *rec;
struct joliet_tree_node *dir;
int parent = 0;
assert (t->joliet);
for (i = 0; i < t->dirlist_len; i++) {
dir = t->pathlist_joliet[i];
while ((i) && t->pathlist_joliet[parent] != dir->parent)
parent++;
assert(parent < i || i == 0);
rec = (struct ecma119_path_table_record*) buf;
rec->len_di[0] = dir->parent ?
(uint8_t) ucslen(dir->name) * 2 : 1;
rec->len_xa[0] = 0;
write_int(rec->block, dir->info.dir.block, 4);
write_int(rec->parent, parent + 1, 2);
if (dir->parent)
memcpy(rec->dir_id, dir->name, rec->len_di[0]);
buf += 8 + rec->len_di[0] + (rec->len_di[0] % 2);
}
}
/* if file_id is >= 0, we use it instead of the filename. As a magic number,
* file_id == 3 means that we are writing the root directory record (in order
* to distinguish it from the "." entry in the root directory) */
static void
write_one_dir_record(struct ecma119_write_target *t,
struct joliet_tree_node *node,
int file_id,
uint8_t *buf)
{
uint32_t len;
uint32_t block;
uint8_t len_dr = (file_id >= 0) ? 34 : node->dirent_len;
uint8_t len_fi = (file_id >= 0) ? 1 : ucslen(node->name) * 2;
uint8_t f_id = (uint8_t) ((file_id == 3) ? 0 : file_id);
uint8_t *name = (file_id >= 0) ? &f_id : (uint8_t*)node->name;
struct ecma119_dir_record *rec = (struct ecma119_dir_record*)buf;
if (node->type == JOLIET_DIR) {
len = node->info.dir.len;
block = node->info.dir.block;
} else if (node->type == JOLIET_BOOT) {
assert(t->eltorito);
if (node->info.boot_img) {
block = t->imgblock;
len = t->catalog->image->node->node.attrib.st_size;
} else {
/* we always assume 2048 as catalog len */
block = t->catblock;
len = 2048;
}
} else {
/* file */
assert(node->type == JOLIET_FILE);
len = node->info.file->size;
block = node->info.file->block;
}
if (file_id == 1 && node->parent)
node = node->parent;
rec->len_dr[0] = len_dr;
iso_bb(rec->block, block, 4);
iso_bb(rec->length, len, 4);
iso_datetime_7(rec->recording_time, t->now);
rec->flags[0] = (node->type == JOLIET_DIR) ? 2 : 0;
iso_bb(rec->vol_seq_number, t->volnum + 1, 2);
rec->len_fi[0] = len_fi;
memcpy(rec->file_id, name, len_fi);
}
static void
write_l_path_table(struct ecma119_write_target *t, uint8_t *buf)
{
write_path_table (t, 1, buf);
}
static void
write_m_path_table(struct ecma119_write_target *t, uint8_t *buf)
{
write_path_table (t, 0, buf);
}
void
joliet_write_sup_vol_desc(struct ecma119_write_target *t, uint8_t *buf)
{
struct ecma119_sup_vol_desc *vol = (struct ecma119_sup_vol_desc*)buf;
struct iso_volume *volume = t->volset->volume[t->volnum];
uint16_t *vol_id = str2ucs(volume->volume_id, t->input_charset);
uint16_t *pub_id = str2ucs(volume->publisher_id, t->input_charset);
uint16_t *data_id = str2ucs(volume->data_preparer_id, t->input_charset);
uint16_t *volset_id = str2ucs(t->volset->volset_id, t->input_charset);
int vol_id_len = MIN(32, ucslen(vol_id) * 2);
int pub_id_len = MIN(128, ucslen(pub_id) * 2);
int data_id_len = MIN(128, ucslen(data_id) * 2);
int volset_id_len = MIN(128, ucslen(volset_id) * 2);
uint16_t *system_id = str2ucs(volume->system_id, t->input_charset);
uint16_t *application_id = str2ucs(volume->application_id, t->input_charset);
uint16_t *copyright_file_id = str2ucs(volume->copyright_file_id, t->input_charset);
uint16_t *abstract_file_id = str2ucs(volume->abstract_file_id, t->input_charset);
uint16_t *biblio_file_id = str2ucs(volume->biblio_file_id, t->input_charset);
int system_id_len = MIN(32, ucslen(system_id) * 2);
int application_id_len = MIN(128, ucslen(application_id) * 2);
int copyright_file_id_len = MIN(37, ucslen(copyright_file_id) * 2);
int abstract_file_id_len = MIN(37, ucslen(abstract_file_id) * 2);
int biblio_file_id_len = MIN(37, ucslen(biblio_file_id) * 2);
vol->vol_desc_type[0] = 2;
memcpy(vol->std_identifier, "CD001", 5);
vol->vol_desc_version[0] = 1;
if (vol_id)
memcpy(vol->volume_id, vol_id, vol_id_len);
memcpy(vol->esc_sequences, "%/E", 3);
iso_bb(vol->vol_space_size, t->vol_space_size, 4);
iso_bb(vol->vol_set_size, t->volset->volset_size, 2);
iso_bb(vol->vol_seq_number, t->volnum + 1, 2);
iso_bb(vol->block_size, t->block_size, 2);
iso_bb(vol->path_table_size, t->path_table_size_joliet, 4);
iso_lsb(vol->l_path_table_pos, t->l_path_table_pos_joliet, 4);
iso_msb(vol->m_path_table_pos, t->m_path_table_pos_joliet, 4);
write_one_dir_record(t, t->joliet_root, 3, vol->root_dir_record);
memcpy(vol->vol_set_id, volset_id, volset_id_len);
memcpy(vol->publisher_id, pub_id, pub_id_len);
memcpy(vol->data_prep_id, data_id, data_id_len);
memcpy(vol->system_id, system_id, system_id_len);
memcpy(vol->application_id, "APPID", application_id_len);
memcpy(vol->copyright_file_id, copyright_file_id, copyright_file_id_len);
memcpy(vol->abstract_file_id, abstract_file_id, abstract_file_id_len);
memcpy(vol->bibliographic_file_id, biblio_file_id, biblio_file_id_len);
iso_datetime_17(vol->vol_creation_time, t->now);
iso_datetime_17(vol->vol_modification_time, t->now);
iso_datetime_17(vol->vol_effective_time, t->now);
vol->file_structure_version[0] = 1;
free(vol_id);
free(volset_id);
free(pub_id);
free(data_id);
free(system_id);
free(application_id);
free(copyright_file_id);
free(abstract_file_id);
free(biblio_file_id);
}
static void
write_one_dir(struct ecma119_write_target *t,
struct joliet_tree_node *dir,
uint8_t *buf)
{
size_t i;
int j;
size_t len;
uint8_t *orig_buf = buf;
uint8_t *prior_buf = buf;
assert(dir->type == JOLIET_DIR);
/* write the "." and ".." entries first */
write_one_dir_record(t, dir, 0, buf);
buf += ((struct ecma119_dir_record*) buf)->len_dr[0];
write_one_dir_record(t, dir, 1, buf);
buf += ((struct ecma119_dir_record*) buf)->len_dr[0];
for (i = 0; i < dir->info.dir.nchildren; i++) {
write_one_dir_record(t, dir->info.dir.children[i], -1, buf);
len = ((struct ecma119_dir_record*) buf)->len_dr[0];
if ((buf + len - prior_buf) >= 2048) {
for (j = len - 1; j >= 0; j--) {
prior_buf[2048 + j] = buf[j];
buf[j] = 0;
}
prior_buf += 2048;
buf = prior_buf + len;
}
else {
buf += ((struct ecma119_dir_record*) buf)->len_dr[0];
}
}
assert (buf - orig_buf == dir->info.dir.len);
}
static void
write_dirs(struct ecma119_write_target *t, uint8_t *buf)
{
size_t i;
struct joliet_tree_node *dir;
assert (t->curblock + t->ms_block == t->dirlist_joliet[0]->info.dir.block);
for (i = 0; i < t->dirlist_len_joliet; i++) {
dir = t->dirlist_joliet[i];
write_one_dir(t, dir, buf);
buf += round_up(dir->info.dir.len, t->block_size);
}
}
void
joliet_wr_sup_vol_desc(struct ecma119_write_target *t,
uint8_t *buf)
{
ecma119_start_chunking(t,
joliet_write_sup_vol_desc,
2048,
buf);
}
void
joliet_wr_l_path_table(struct ecma119_write_target *t,
uint8_t *buf)
{
ecma119_start_chunking(t,
write_l_path_table,
t->path_table_size_joliet,
buf);
}
void
joliet_wr_m_path_table(struct ecma119_write_target *t,
uint8_t *buf)
{
ecma119_start_chunking(t,
write_m_path_table,
t->path_table_size_joliet,
buf);
}
void
joliet_wr_dir_records(struct ecma119_write_target *t,
uint8_t *buf)
{
ecma119_start_chunking(t,
write_dirs,
t->total_dir_size_joliet,
buf);
}