bin_zimg.c

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// SPDX-FileCopyrightText: 2011-2019 ninjahacker <wardjm@gmail.com>
// SPDX-License-Identifier: LGPL-3.0-only
 
#include <rz_types.h>
#include <rz_util.h>
#include <rz_lib.h>
#include <rz_bin.h>
#include "zimg/zimg.h"
 
static Sdb *get_sdb(RzBinFile *bf) {
    rz_return_val_if_fail(bf && bf->o, false);
    struct rz_bin_zimg_obj_t *bin = (struct rz_bin_zimg_obj_t *)bf->o->bin_obj;
    return bin ? bin->kv : NULL;
}
 
static bool load_buffer(RzBinFile *bf, RzBinObject *obj, RzBuffer *b, Sdb *sdb) {
    obj->bin_obj = rz_bin_zimg_new_buf(b);
    return obj->bin_obj != NULL;
}
 
static ut64 baddr(RzBinFile *bf) {
    return 0;
}
 
static bool check_buffer(RzBuffer *b) {
    ut8 zimghdr[8];
    if (rz_buf_read_at(b, 0, zimghdr, sizeof(zimghdr))) {
        // Checking ARM zImage kernel
        if (!memcmp(zimghdr, "\x00\x00\xa0\xe1\x00\x00\xa0\xe1", 8)) {
            return true;
        }
    }
    return false;
}
 
static RzBinInfo *info(RzBinFile *bf) {
    RzBinInfo *ret = RZ_NEW0(RzBinInfo);
    if (!ret) {
        return NULL;
    }
    ret->file = bf->file ? strdup(bf->file) : NULL;
    ret->type = strdup("Linux zImage Kernel");
    ret->has_va = false;
    ret->bclass = strdup("Compressed Linux Kernel");
    ret->rclass = strdup("zimg");
    ret->os = strdup("linux");
    ret->subsystem = strdup("linux");
    ret->machine = strdup("ARM"); // TODO: can be other cpus
    ret->arch = strdup("arm");
    ret->lang = "C";
    ret->bits = 32;
    ret->big_endian = 0;
    ret->dbg_info = 0; // 1 | 4 | 8; /* Stripped | LineNums | Syms */
    return ret;
}
 
RzBinPlugin rz_bin_plugin_zimg = {
    .name = "zimg",
    .desc = "zimg format bin plugin",
    .license = "LGPL3",
    .get_sdb = &get_sdb,
    .load_buffer = &load_buffer,
    .check_buffer = &check_buffer,
    .baddr = &baddr,
    .info = &info,
};
 
#ifndef RZ_PLUGIN_INCORE
RZ_API RzLibStruct rizin_plugin = {
    .type = RZ_LIB_TYPE_BIN,
    .data = &rz_bin_plugin_zimg,
    .version = RZ_VERSION
};
#endif