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/*
* libthor - Tizen Thor communication protocol
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <libgen.h>
#include <errno.h>
#include <unistd.h>
#include "thor.h"
#include "thor_internal.h"
struct file_data_src {
struct thor_data_src src;
int fd;
const char* filename;
off_t filesize;
int pos;
struct thor_data_src_entry entry;
struct thor_data_src_entry *ent[2];
};
static off_t file_get_file_length(struct thor_data_src *src)
{
struct file_data_src *filedata =
container_of(src, struct file_data_src, src);
return filedata->filesize;
}
static off_t file_get_data_block(struct thor_data_src *src,
void *data, off_t len)
{
struct file_data_src *filedata =
container_of(src, struct file_data_src, src);
return read(filedata->fd, data, len);
}
static const char *file_get_file_name(struct thor_data_src *src)
{
struct file_data_src *filedata =
container_of(src, struct file_data_src, src);
return filedata->filename;
}
static void file_release(struct thor_data_src *src)
{
struct file_data_src *filedata =
container_of(src, struct file_data_src, src);
close(filedata->fd);
free((void *)filedata->filename);
free(filedata);
}
static int file_next_file(struct thor_data_src *src)
{
struct file_data_src *filedata =
container_of(src, struct file_data_src, src);
return !filedata->pos ? ++filedata->pos : 0;
}
static struct thor_data_src_entry **file_get_entries(struct thor_data_src *src)
{
struct file_data_src *filedata =
container_of(src, struct file_data_src, src);
return filedata->ent;
}
int t_file_get_data_src(const char *path, struct thor_data_src **data)
{
int ret;
char *basefile;
struct file_data_src *fdata;
fdata = calloc(sizeof(*fdata), 1);
if (!fdata)
return -1;
ret = open(path, O_RDONLY);
if (ret < 0)
goto close_file;
fdata->fd = ret;
/*
* According to the man page basename() might modify the argument or
* return a pointer to statically allocated memory. Thus two strdup()s
*/
basefile = strdup(path);
if (!basefile)
goto close_file;
fdata->filename = strdup(basename(basefile));
free(basefile);
if (!fdata->filename)
goto close_file;
fdata->filesize = lseek(fdata->fd, 0, SEEK_END);
lseek(fdata->fd, 0, SEEK_SET);
fdata->entry.name = (char *)fdata->filename;
fdata->entry.size = fdata->filesize;
fdata->ent[0] = &fdata->entry;
fdata->ent[1] = NULL;
fdata->src.get_file_length = file_get_file_length;
fdata->src.get_size = file_get_file_length;
fdata->src.get_block = file_get_data_block;
fdata->src.get_name = file_get_file_name;
fdata->src.release = file_release;
fdata->src.next_file = file_next_file;
fdata->src.get_entries = file_get_entries;
fdata->pos = 0;
*data = &fdata->src;
return 0;
close_file:
close(ret);
free(fdata);
return -EINVAL;
}
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