mirror of
https://github.com/radareorg/radare2.git
synced 2024-11-30 16:40:57 +00:00
961d5007a9
* Fix some memory leaks * Mark r_buf_data as deprecated * Remove some spaguetti (-42LOC) * Fix buf license header authorship * Make parser functions return void for simplicity
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/* radare - LGPL - Copyright 2009-2020 - ret2libc */
|
|
|
|
#include <r_types.h>
|
|
#include <r_util.h>
|
|
|
|
struct buf_file_user {
|
|
const char *file;
|
|
int perm;
|
|
int mode;
|
|
};
|
|
|
|
struct buf_file_priv {
|
|
int fd;
|
|
ut8 tmp[8];
|
|
};
|
|
|
|
static inline struct buf_file_priv *get_priv_file(RBuffer *b) {
|
|
struct buf_file_priv *priv = (struct buf_file_priv *)b->priv;
|
|
r_warn_if_fail (priv);
|
|
return priv;
|
|
}
|
|
|
|
static bool buf_file_init(RBuffer *b, const void *user) {
|
|
const struct buf_file_user *u = (const struct buf_file_user *)user;
|
|
struct buf_file_priv *priv = R_NEW0 (struct buf_file_priv);
|
|
if (!priv) {
|
|
return false;
|
|
}
|
|
int fd = r_sandbox_open (u->file, u->perm, u->mode);
|
|
if (fd == -1) {
|
|
free (priv);
|
|
return false;
|
|
}
|
|
priv->fd = fd;
|
|
b->priv = priv;
|
|
return true;
|
|
}
|
|
|
|
static bool buf_file_fini(RBuffer *b) {
|
|
struct buf_file_priv *priv = get_priv_file (b);
|
|
r_sandbox_close (priv->fd);
|
|
R_FREE (b->priv);
|
|
return true;
|
|
}
|
|
|
|
static ut64 buf_file_get_size(RBuffer *b) {
|
|
struct buf_file_priv *priv = get_priv_file (b);
|
|
int pos = r_sandbox_lseek (priv->fd, 0, SEEK_CUR);
|
|
int res = r_sandbox_lseek (priv->fd, 0, SEEK_END);
|
|
r_sandbox_lseek (priv->fd, pos, SEEK_SET);
|
|
return (ut64)res;
|
|
}
|
|
|
|
static st64 buf_file_read(RBuffer *b, ut8 *buf, ut64 len) {
|
|
struct buf_file_priv *priv = get_priv_file (b);
|
|
return r_sandbox_read (priv->fd, buf, len);
|
|
}
|
|
|
|
static st64 buf_file_write(RBuffer *b, const ut8 *buf, ut64 len) {
|
|
struct buf_file_priv *priv = get_priv_file (b);
|
|
return r_sandbox_write (priv->fd, buf, len);
|
|
}
|
|
|
|
static st64 buf_file_seek(RBuffer *b, st64 addr, int whence) {
|
|
struct buf_file_priv *priv = get_priv_file (b);
|
|
switch (whence) {
|
|
case R_BUF_CUR: whence = SEEK_CUR; break;
|
|
case R_BUF_SET: whence = SEEK_SET; break;
|
|
case R_BUF_END: whence = SEEK_END; break;
|
|
}
|
|
return r_sandbox_lseek (priv->fd, addr, whence);
|
|
}
|
|
|
|
static bool buf_file_resize(RBuffer *b, ut64 newsize) {
|
|
struct buf_file_priv *priv = get_priv_file (b);
|
|
return r_sandbox_truncate (priv->fd, newsize) >= 0;
|
|
}
|
|
|
|
static const RBufferMethods buffer_file_methods = {
|
|
.init = buf_file_init,
|
|
.fini = buf_file_fini,
|
|
.read = buf_file_read,
|
|
.write = buf_file_write,
|
|
.get_size = buf_file_get_size,
|
|
.resize = buf_file_resize,
|
|
.seek = buf_file_seek,
|
|
};
|