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libisoburn/libisoburn/isoburn.c

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/*
cc -g -c isoburn.c
*/
/*
Class core of libisoburn.
Copyright 2007 Vreixo Formoso Lopes <metalpain2002@yahoo.es>
and Thomas Schmitt <scdbackup@gmx.net>
*/
/* ( derived from stub generated by CgeN on Sat, 01 Sep 2007 12:04:36 GMT ) */
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#ifndef Xorriso_standalonE
#include <libburn/libburn.h>
#include <libisofs/libisofs.h>
#else /* ! Xorriso_standalonE */
#include "../libisofs/libisofs.h"
#include "../libburn/libburn.h"
#endif /* Xorriso_standalonE */
#include "libisoburn.h"
#include "isoburn.h"
/* No more: version numbers out of configure.ac
major.minor.micro now comes from libisoburn.h
#include "../version.h"
*/
/* -------------------------- isoburn ----------------------- */
/* The global list of isoburn objects. Usually there is only one.
>>> we are not ready for multiple control threads yet. See >>> mutex .
Multiple burns under one control thread should work.
*/
struct isoburn *isoburn_list_start= NULL;
int isoburn_new(struct isoburn **objpt, int flag)
{
struct isoburn *o;
int i, ret;
*objpt= o= (struct isoburn *) malloc(sizeof(struct isoburn));
if(o==NULL) {
burn_msgs_submit(0x00060000,
"Cannot allocate memory for isoburn control object",
0, "FATAL", NULL);
return(-1);
}
o->drive= NULL;
o->emulation_mode= 0;
o->min_start_byte= 0;
o->nwa= 0;
#ifdef Libisoburn_no_fifO
o->iso_source= NULL;
#else
o->fifo= NULL;
#endif
o->wrote_well= -1;
o->fabricated_disc_status= BURN_DISC_UNREADY;
for(i=0;i<65536;i++)
o->target_iso_head[i]= 0;
o->image= NULL;
o->read_pacifier= NULL;
o->read_pacifier_handle= NULL;
o->prev= NULL;
o->next= NULL;
ret= iso_image_new("ISOIMAGE", &o->image);
if(ret<0) {
isoburn_report_iso_error(ret, "Cannot create image", 0, "FATAL", 0);
goto failed;
}
isoburn_link(o, isoburn_list_start, 1);
return(1);
failed:;
isoburn_destroy(objpt, 0);
return(-1);
}
int isoburn_destroy(struct isoburn **objpt, int flag)
{
struct isoburn *o;
o= *objpt;
if(o==NULL)
return(0);
/* >>> mutex */
if(o==isoburn_list_start)
isoburn_list_start= o->next;
if(o->prev!=NULL)
o->prev->next= o->next;
if(o->next!=NULL)
o->next->prev= o->prev;
/* >>> end mutex */
if(o->image!=NULL)
iso_image_unref(o->image);
#ifdef Libisoburn_no_fifO
if(o->iso_source!=NULL)
burn_source_free(o->iso_source);
#else
if(o->fifo!=NULL)
burn_source_free(o->fifo);
#endif /* ! Libisoburn_no_fifO */
free((char *) o);
*objpt= NULL;
return(1);
}
int isoburn_destroy_all(struct isoburn **objpt, int flag)
{
struct isoburn *o,*n;
o= *objpt;
if(o==NULL)
return(0);
for(;o->prev!=NULL;o= o->prev);
for(;o!=NULL;o= n) {
n= o->next;
isoburn_destroy(&o,0);
}
*objpt= NULL;
return(1);
}
int isoburn_get_target_image(struct isoburn *o, IsoImage **pt, int flag)
{
*pt= o->image;
return(1);
}
int isoburn_get_prev(struct isoburn *o, struct isoburn **pt, int flag)
{
*pt= o->prev;
return(1);
}
int isoburn_get_next(struct isoburn *o, struct isoburn **pt, int flag)
{
*pt= o->next;
return(1);
}
int isoburn_link(struct isoburn *o, struct isoburn *link, int flag)
/*
bit0= insert as link->prev rather than as link->next
*/
{
/* >>> mutex */
if(isoburn_list_start==NULL ||
(isoburn_list_start==link && (flag&1)))
isoburn_list_start= o;
if(o->prev!=NULL)
o->prev->next= o->next;
if(o->next!=NULL)
o->next->prev= o->prev;
o->prev= o->next= NULL;
if(link==NULL)
return(1);
if(flag&1) {
o->next= link;
o->prev= link->prev;
if(o->prev!=NULL)
o->prev->next= o;
link->prev= o;
} else {
o->prev= link;
o->next= link->next;
if(o->next!=NULL)
o->next->prev= o;
link->next= o;
}
/* >>> end mutex */
return(1);
}
int isoburn_count(struct isoburn *o, int flag)
/* flag: bit1= count from start of list */
{
int counter= 0;
if(flag&2)
for(;o->prev!=NULL;o= o->prev);
for(;o!=NULL;o= o->next)
counter++;
return(counter);
}
int isoburn_by_idx(struct isoburn *o, int idx, struct isoburn **pt, int flag)
/* flag: bit0= fetch first (idx<0) or last (idx>0) item in list
bit1= address from start of list */
{
int i,abs_idx;
struct isoburn *npt;
if(flag&2)
for(;o->prev!=NULL;o= o->prev);
abs_idx= (idx>0?idx:-idx);
*pt= o;
for(i= 0;(i<abs_idx || (flag&1)) && *pt!=NULL;i++) {
if(idx>0)
npt= o->next;
else
npt= o->prev;
if(npt==NULL && (flag&1))
break;
*pt= npt;
}
return(*pt!=NULL);
}
int isoburn_find_by_drive(struct isoburn **pt, struct burn_drive *d, int flag)
{
struct isoburn *o;
*pt= NULL;
for(o= isoburn_list_start;o!=NULL;o= o->next)
if(o->drive==d) {
*pt= o;
return(1);
}
return(0);
}
static
int isoburn_prepare_disc_aux(struct burn_drive *d, struct burn_disc **disc,
struct isoburn_imgen_opts *opts, int new_img)
{
struct burn_source *wsrc;
struct burn_session *session;
struct burn_track *track;
struct isoburn *o;
IsoWriteOpts *wopts= NULL;
enum burn_disc_status state;
int ret, fifo_chunks;
ret= isoburn_find_emulator(&o, d, 0);
if(ret<0 || o==NULL)
{ret= -1; goto ex;}
o->wrote_well= 0; /* early end will be registered as failure */
state = isoburn_disc_get_status(d);
if (state != BURN_DISC_BLANK && state != BURN_DISC_APPENDABLE
&& (state != BURN_DISC_FULL || ! new_img)) {
/* unsuitable status */
burn_msgs_submit(0x00060000, "Unsuitable media state", 0, "FAILURE", NULL);
{ret= -2; goto ex;}
}
fifo_chunks= 32;
if(opts->fifo_size >= 64*1024 && opts->fifo_size <= 1024.0 * 1024.0 * 1024.0){
fifo_chunks= opts->fifo_size/2048;
if(fifo_chunks*2048 < opts->fifo_size)
fifo_chunks++;
}
ret = iso_write_opts_new(&wopts, 0);
if (ret < 0) {
isoburn_report_iso_error(ret, "Cannot create iso_write_opts", 0, "FATAL",0);
goto ex;
}
iso_write_opts_set_iso_level(wopts, opts->level);
iso_write_opts_set_rockridge(wopts, opts->rockridge);
iso_write_opts_set_joliet(wopts, opts->joliet);
iso_write_opts_set_iso1999(wopts, opts->iso1999);
iso_write_opts_set_omit_version_numbers(wopts, opts->omit_version_numbers);
iso_write_opts_set_allow_deep_paths(wopts, opts->allow_deep_paths);
iso_write_opts_set_allow_longer_paths(wopts, opts->allow_longer_paths);
iso_write_opts_set_max_37_char_filenames(wopts, opts->max_37_char_filenames);
iso_write_opts_set_no_force_dots(wopts, opts->no_force_dots);
iso_write_opts_set_allow_lowercase(wopts, opts->allow_lowercase);
iso_write_opts_set_allow_full_ascii(wopts, opts->allow_full_ascii);
iso_write_opts_set_relaxed_vol_atts(wopts, 1);
iso_write_opts_set_joliet_longer_paths(wopts, opts->joliet_longer_paths);
iso_write_opts_set_sort_files(wopts, opts->sort_files);
iso_write_opts_set_replace_mode(wopts, opts->replace_dir_mode,
opts->replace_file_mode, opts->replace_uid, opts->replace_gid);
iso_write_opts_set_default_dir_mode(wopts, opts->dir_mode);
iso_write_opts_set_default_file_mode(wopts, opts->file_mode);
iso_write_opts_set_default_uid(wopts, opts->uid);
iso_write_opts_set_default_gid(wopts, opts->gid);
iso_write_opts_set_output_charset(wopts, opts->output_charset);
#ifdef Libisoburn_no_fifO
iso_write_opts_set_fifo_size(wopts, fifo_chunks);
#endif /* Libisoburn_no_fifO */
if (new_img) {
iso_write_opts_set_ms_block(wopts, 0);
iso_write_opts_set_appendable(wopts, 0);
iso_write_opts_set_overwrite_buf(wopts, NULL);
} else {
int lba, nwa;
ret = isoburn_disc_track_lba_nwa(d, NULL, 0, &lba, &nwa);
if (ret != 1) {
burn_msgs_submit(0x00060000, "Cannot determine next writeable address", 0,
"FAILURE", NULL);
{ret= -3; goto ex;}
}
if (nwa == 0 && state == BURN_DISC_APPENDABLE) {
/* invalid nwa */
burn_msgs_submit(0x00060000, "Encountered 0 as next writeable address", 0,
"FAILURE", NULL);
{ret= -4; goto ex;}
}
iso_write_opts_set_ms_block(wopts, nwa);
iso_write_opts_set_appendable(wopts, 1);
iso_write_opts_set_overwrite_buf(wopts, o->target_iso_head);
}
ret = iso_image_create_burn_source(o->image, wopts, &wsrc);
if (ret < 0) {
isoburn_report_iso_error(ret, "Cannot create burn source", 0, "FAILURE", 0);
{ret= -1; goto ex;}
}
/* TODO check return values for failure. propertly clean-up on error */
#ifdef Libisoburn_no_fifO
o->iso_source= wsrc;
#else
o->fifo = burn_fifo_source_new(wsrc, 2048, fifo_chunks, 0);
burn_source_free(wsrc);
if (o->fifo == NULL) {
burn_msgs_submit(0x00060000, "Cannot attach fifo", 0, "FATAL", NULL);
{ret= -1; goto ex;}
}
#endif /* ! Libisoburn_no_fifO */
*disc = burn_disc_create();
session = burn_session_create();
burn_disc_add_session(*disc, session, BURN_POS_END);
track = burn_track_create();
#ifdef Libisoburn_no_fifO
burn_track_set_source(track, o->iso_source);
#else
burn_track_set_source(track, o->fifo);
#endif /* ! Libisoburn_no_fifO */
burn_session_add_track(session, track, BURN_POS_END);
/* give up local references */
burn_track_free(track);
burn_session_free(session);
o->wrote_well= -1; /* neutral */
ret= 1;
ex:
if(wopts!=NULL)
{iso_write_opts_free(wopts); wopts= NULL;}
return ret;
}
int isoburn_prepare_disc(struct burn_drive *d, struct burn_disc **disc,
struct isoburn_imgen_opts *opts)
{
return isoburn_prepare_disc_aux(d, disc, opts, 0);
}
int isoburn_prepare_new_image(struct burn_drive *d, struct burn_disc **disc,
struct isoburn_imgen_opts *opts,
struct burn_drive *out_drive)
{
int ret;
struct isoburn *in_o, *out_o;
ret= isoburn_prepare_disc_aux(d, disc, opts, 1);
if (ret<=0)
return ret;
#ifdef Libisoburn_no_fifO
/* Hand over source reference for optional fifo status inquiry */
if(out_drive==NULL)
return 1;
ret= isoburn_find_emulator(&out_o, out_drive, 0);
if(ret<0 || out_o==NULL)
return 1;
ret= isoburn_find_emulator(&in_o, d, 0);
if(ret<0 || in_o==NULL)
return 1; /* then without fifo status inquiry */
if(out_o->iso_source!=NULL)
burn_source_free(out_o->iso_source);
out_o->iso_source= in_o->iso_source;
in_o->iso_source= NULL;
#endif /* Libisoburn_no_fifO */
return 1;
}
/* API @since 0.1.0
@param flag bit0= this is a regular end, not an abort
give up source reference
*/
int isoburn_cancel_prepared_write(struct burn_drive *d,
struct burn_drive *output_drive, int flag)
{
int ret;
struct isoburn *o= NULL;
if(output_drive!=NULL) {
ret= isoburn_find_emulator(&o, output_drive, 0);
if(ret<0 || o==NULL)
o= NULL;
else if(o->iso_source==NULL)
o= NULL;
}
if(o==NULL) {
ret= isoburn_find_emulator(&o, d, 0);
if(ret<0)
return(-1);
if(o==NULL)
return(0);
if(o->iso_source==NULL)
return(0);
}
if(o->iso_source->read!=NULL)
return(0);
if(o->iso_source->version<1)
return(0);
o->iso_source->cancel(o->iso_source);
burn_source_free(o->iso_source);
o->iso_source= NULL;
return(1);
}
/* API @since 0.1.0 */
int isoburn_sync_after_write(struct burn_drive *d,
struct burn_drive *output_drive, int flag)
{
return isoburn_cancel_prepared_write(d, output_drive, 1);
}
void isoburn_version(int *major, int *minor, int *micro)
{
*major= isoburn_header_version_major;
*minor= isoburn_header_version_minor;
*micro= isoburn_header_version_micro;
/* No more: values from version.h generated from version.h.in and
macro values defined in configure.ac
*major = ISOBURN_MAJOR_VERSION;
*minor = ISOBURN_MINOR_VERSION;
*micro = ISOBURN_MICRO_VERSION;
*/
}
int isoburn_is_compatible(int major, int minor, int micro, int flag)
{
int own_major, own_minor, own_micro;
isoburn_version(&own_major, &own_minor, &own_micro);
return(own_major > major ||
(own_major == major && (own_minor > minor ||
(own_minor == minor && own_micro >= micro))));
}
/* ----------------------------------------------------------------------- */
/*
Options for image reading.
*/
/* ----------------------------------------------------------------------- */
int isoburn_ropt_new(struct isoburn_read_opts **new_o, int flag)
{
struct isoburn_read_opts *o;
o= (*new_o)= calloc(1, sizeof(struct isoburn_read_opts));
if(o==NULL) {
burn_msgs_submit(0x00060000, "Cannot allocate memory for read options",
0, "FATAL", NULL);
return(-1);
}
o->norock= 0;
o->nojoliet= 0;
o->noiso1999= 1;
o->preferjoliet= 0;
o->uid= geteuid();
o->gid= getegid();
o->mode= 0444;
o->dirmode= 0555;
o->input_charset= NULL;
o->hasRR= 0;
o->hasJoliet= 0;
o->hasIso1999= 0;
o->hasElTorito= 0;
o->size= 0;
o->pretend_blank= 1;
return(1);
}
int isoburn_ropt_destroy(struct isoburn_read_opts **o, int flag)
{
if(*o==NULL)
return(0);
free(*o);
*o= NULL;
return(1);
}
int isoburn_ropt_set_extensions(struct isoburn_read_opts *o, int ext)
{
o->norock= !!(ext&1);
o->nojoliet= !!(ext&2);
o->noiso1999= !!(ext&4);
o->preferjoliet= !!(ext&8);
o->pretend_blank= !!(ext&16);
return(1);
}
int isoburn_ropt_get_extensions(struct isoburn_read_opts *o, int *ext)
{
*ext= (!!o->norock) | ((!!o->nojoliet)<<1) | ((!!o->noiso1999)<<2) |
((!!o->preferjoliet)<<3) | ((!!o->pretend_blank)<<4);
return(1);
}
int isoburn_ropt_set_default_perms(struct isoburn_read_opts *o,
uid_t uid, gid_t gid, mode_t mode)
{
mode_t dirmode;
o->uid= uid;
o->gid= gid;
o->mode= mode;
dirmode= mode;
if(dirmode & S_IRUSR)
dirmode|= S_IXUSR;
if(dirmode & S_IRGRP)
dirmode|= S_IXGRP;
if(dirmode & S_IROTH)
dirmode|= S_IXOTH;
o->dirmode= dirmode;
return(1);
}
int isoburn_ropt_get_default_perms(struct isoburn_read_opts *o,
uid_t *uid, gid_t *gid, mode_t *mode)
{
*uid= o->uid;
*gid= o->gid;
*mode= o->mode;
return(1);
}
int isoburn_ropt_set_default_dirperms(struct isoburn_read_opts *o,
mode_t mode)
{
o->dirmode= mode;
return(1);
}
int isoburn_ropt_get_default_dirperms(struct isoburn_read_opts *o,
mode_t *mode)
{
*mode= o->dirmode;
return(1);
}
int isoburn_ropt_set_input_charset(struct isoburn_read_opts *o,
char *input_charset)
{
o->input_charset= input_charset;
return(1);
}
int isoburn_igopt_get_in_charset(struct isoburn_read_opts *o,
char **input_charset)
{
*input_charset= o->input_charset;
return(1);
}
int isoburn_ropt_get_size_what(struct isoburn_read_opts *o,
uint32_t *size, int *has_what)
{
*size= o->size;
*has_what= (!!o->hasRR) | ((!!o->hasJoliet)<<1) |
((!!o->hasIso1999)<<2) | ((!!o->hasElTorito)<<3);
return(1);
}
/* ----------------------------------------------------------------------- */
/*
Options for image generation by libisofs and image transport to libburn.
*/
/* ----------------------------------------------------------------------- */
int isoburn_igopt_new(struct isoburn_imgen_opts **new_o, int flag)
{
struct isoburn_imgen_opts *o;
o= (*new_o)= calloc(1, sizeof(struct isoburn_imgen_opts));
if(o==NULL) {
burn_msgs_submit(0x00060000,
"Cannot allocate memory for image generation options",
0, "FATAL", NULL);
return(-1);
}
o->level= 2;
o->rockridge= 1;
o->joliet= 0;
o->iso1999= 0;
o->omit_version_numbers= 0;
o->allow_deep_paths= 1;
o->allow_longer_paths= 0;
o->max_37_char_filenames= 0;
o->no_force_dots= 0;
o->allow_lowercase= 0;
o->allow_full_ascii= 0;
o->joliet_longer_paths= 0;
o->sort_files= 0;
o->replace_dir_mode= 0;
o->replace_file_mode= 0;
o->replace_uid= 0;
o->replace_gid= 0;
o->dir_mode= 0555;
o->file_mode= 0444;
o->uid= 0;
o->gid= 0;
o->output_charset= 0;
o->fifo_size= 4*1024*1024;
return(1);
}
int isoburn_igopt_destroy(struct isoburn_imgen_opts **o, int flag)
{
if(*o==NULL)
return(0);
free(*o);
*o= NULL;
return(1);
}
int isoburn_igopt_set_level(struct isoburn_imgen_opts *o, int level)
{
o->level= level;
return(1);
}
int isoburn_igopt_get_level(struct isoburn_imgen_opts *o, int *level)
{
*level= o->level;
return(1);
}
int isoburn_igopt_set_extensions(struct isoburn_imgen_opts *o, int ext)
{
o->rockridge= !!(ext&1);
o->joliet= !!(ext&2);
o->iso1999= !!(ext&4);
return(1);
}
int isoburn_igopt_get_extensions(struct isoburn_imgen_opts *o, int *ext)
{
*ext= (!!o->rockridge) | ((!!o->joliet)<<1) | ((!!o->iso1999)<<2);
return(1);
}
int isoburn_igopt_set_relaxed(struct isoburn_imgen_opts *o, int relax)
{
o->omit_version_numbers= !!(relax&1);
o->allow_deep_paths= !!(relax&2);
o->allow_longer_paths= !!(relax&4);
o->max_37_char_filenames= !!(relax&8);
o->no_force_dots= !!(relax&16);
o->allow_lowercase= !!(relax&32);
o->allow_full_ascii= !!(relax&64);
o->joliet_longer_paths= !!(relax&128);
return(1);
}
int isoburn_igopt_get_relaxed(struct isoburn_imgen_opts *o, int *relax)
{
*relax= (!!o->omit_version_numbers) | ((!!o->allow_deep_paths)<<1) |
((!!o->allow_longer_paths)<<2) | ((!!o->max_37_char_filenames)<<3) |
((!!o->no_force_dots)<<4) | ((!!o->allow_lowercase)<<5) |
((!!o->allow_full_ascii)<<6) | ((!!o->joliet_longer_paths)<<7);
return(1);
}
int isoburn_igopt_set_sort_files(struct isoburn_imgen_opts *o, int value)
{
o->sort_files= !!(value&1);
return(1);
}
int isoburn_igopt_get_sort_files(struct isoburn_imgen_opts *o, int *value)
{
*value= !!o->sort_files;
return(1);
}
int isoburn_igopt_set_over_mode(struct isoburn_imgen_opts *o,
int replace_dir_mode, int replace_file_mode,
mode_t dir_mode, mode_t file_mode)
{
o->replace_dir_mode= replace_dir_mode%3;
o->replace_file_mode= replace_file_mode%3;
o->dir_mode= dir_mode;
o->file_mode= file_mode;
return(1);
}
int isoburn_igopt_get_over_mode(struct isoburn_imgen_opts *o,
int *replace_dir_mode, int *replace_file_mode,
mode_t *dir_mode, mode_t *file_mode)
{
*replace_dir_mode= o->replace_dir_mode%3;
*replace_file_mode= o->replace_file_mode%3;
*dir_mode= o->dir_mode;
*file_mode= o->file_mode;
return(1);
}
int isoburn_igopt_set_over_ugid(struct isoburn_imgen_opts *o,
int replace_uid, int replace_gid,
uid_t uid, gid_t gid)
{
o->replace_uid= replace_uid%3;
o->replace_gid= replace_gid%3;
o->uid= uid;
o->gid= gid;
return(1);
}
int isoburn_igopt_get_over_ugid(struct isoburn_imgen_opts *o,
int *replace_uid, int *replace_gid,
uid_t *uid, gid_t *gid)
{
*replace_uid= o->replace_uid%3;
*replace_gid= o->replace_gid%3;
*uid= o->uid;
*gid= o->gid;
return(1);
}
int isoburn_igopt_set_out_charset(struct isoburn_imgen_opts *o,
char *output_charset)
{
o->output_charset= output_charset;
return(1);
}
int isoburn_igopt_get_out_charset(struct isoburn_imgen_opts *o,
char **output_charset)
{
*output_charset= o->output_charset;
return(1);
}
int isoburn_igopt_set_fifo_size(struct isoburn_imgen_opts *o, int fifo_size)
{
o->fifo_size= fifo_size;
return(1);
}
int isoburn_igopt_get_fifo_size(struct isoburn_imgen_opts *o, int *fifo_size)
{
*fifo_size= o->fifo_size;
return(1);
}
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