rizin/librz/bin/bfile.c

// SPDX-FileCopyrightText: 2009-2019 pancake <pancake@nopcode.org>
// SPDX-FileCopyrightText: 2009-2019 nibble <nibble.ds@gmail.com>
// SPDX-FileCopyrightText: 2009-2019 dso <dso@rice.edu>
// SPDX-License-Identifier: LGPL-3.0-only

#include <rz_bin.h>
#include <rz_msg_digest.h>
#include <rz_util/rz_log.h>
#include <rz_util/rz_str_search.h>
#include "i/private.h"

static RzBinClass *__getClass(RzBinFile *bf, const char *name) {
	rz_return_val_if_fail(bf && bf->o && bf->o->classes_ht && name, NULL);
	return ht_pp_find(bf->o->classes_ht, name, NULL);
}

static RzBinSymbol *__getMethod(RzBinFile *bf, const char *klass, const char *method) {
	rz_return_val_if_fail(bf && bf->o && bf->o->methods_ht && klass && method, NULL);
	const char *name = sdb_fmt("%s::%s", klass, method);
	return ht_pp_find(bf->o->methods_ht, name, NULL);
}

static RzBinString *__stringAt(RzBinFile *bf, RzList *ret, ut64 addr) {
	if (addr != 0 && addr != UT64_MAX) {
		return ht_up_find(bf->o->strings_db, addr, NULL);
	}
	return NULL;
}

static inline void detected_string_to_bin_string(RzBinString *dst, RzDetectedString *src) {
	int type = -1;
	switch (src->type) {
	case RZ_STRING_ENC_8BIT:
		type = RZ_BIN_STRING_ENC_8BIT;
		break;
	case RZ_STRING_ENC_UTF8:
		type = RZ_BIN_STRING_ENC_UTF8;
		break;
	case RZ_STRING_ENC_UTF16LE:
		type = RZ_BIN_STRING_ENC_WIDE_LE;
		break;
	case RZ_STRING_ENC_UTF32LE:
		type = RZ_BIN_STRING_ENC_WIDE32_LE;
		break;
	case RZ_STRING_ENC_UTF16BE:
		type = RZ_BIN_STRING_ENC_WIDE_BE;
		break;
	case RZ_STRING_ENC_UTF32BE:
		type = RZ_BIN_STRING_ENC_WIDE32_BE;
		break;
	case RZ_STRING_ENC_IBM037:
		type = RZ_BIN_STRING_ENC_IBM037;
		break;
	case RZ_STRING_ENC_IBM290:
		type = RZ_BIN_STRING_ENC_IBM290;
		break;
	case RZ_STRING_ENC_EBCDIC_ES:
		type = RZ_BIN_STRING_ENC_EBCDIC_ES;
		break;
	case RZ_STRING_ENC_EBCDIC_UK:
		type = RZ_BIN_STRING_ENC_EBCDIC_UK;
		break;
	case RZ_STRING_ENC_EBCDIC_US:
		type = RZ_BIN_STRING_ENC_EBCDIC_US;
		break;
	case RZ_STRING_ENC_GUESS:
		type = RZ_BIN_STRING_ENC_DETECT;
		break;
	default:
		break;
	}

	dst->string = src->string;
	dst->size = src->size;
	dst->length = src->length;
	dst->type = type;
	dst->paddr = src->addr;
	dst->vaddr = src->addr;

	free(src);
}

static void string_scan_range(RzList *list, RzBinFile *bf, size_t min, const ut64 from, const ut64 to, RzStrEnc type) {
	RzListIter *it;
	RzDetectedString *str;

	RzList *str_list = rz_list_new();
	if (!str_list) {
		return;
	}

	RzUtilStrScanOptions scan_opt = {
		.buf_size = 2048,
		.max_uni_blocks = 4,
		.min_str_length = min,
		.prefer_big_endian = false,
		.check_ascii_freq = bf->rbin->strseach_check_ascii_freq
	};

	int count = rz_scan_strings(bf->buf, str_list, &scan_opt, from, to, type);
	if (count <= 0) {
		rz_list_free(str_list);
		return;
	}

	int ord = 0;
	rz_list_foreach (str_list, it, str) {
		RzBinString *bs = RZ_NEW0(RzBinString);
		detected_string_to_bin_string(bs, str);
		bs->ordinal = ord++;
		if (bf->o) {
			bs->paddr += bf->o->boffset;
			bs->vaddr = rz_bin_object_p2v(bf->o, bs->paddr);
			ht_up_insert(bf->o->strings_db, bs->vaddr, bs);
		}
		rz_list_append(list, bs);
	}

	rz_list_free(str_list);
}

static bool __isDataSection(RzBinFile *a, RzBinSection *s) {
	if (s->has_strings || s->is_data) {
		return true;
	} else if (!s->name) {
		return false;
	}
	// Rust
	return strstr(s->name, "_const") != NULL;
}

static void get_strings_range(RzBinFile *bf, RzList *list, size_t min, ut64 from, ut64 to) {
	rz_return_if_fail(bf && bf->buf && bf->rbin);

	RzBinPlugin *plugin = rz_bin_file_cur_plugin(bf);

	if (plugin && !min) {
		min = plugin->minstrlen > 0 ? plugin->minstrlen : 4;
	} else if (!min) {
		min = 4;
	}

	if (!bf->rbin->is_debugger) {
		if (!to || to > rz_buf_size(bf->buf)) {
			to = rz_buf_size(bf->buf);
		}
		if (!to) {
			return;
		}
	}

	ut64 size = to - from;
	// in case of dump ignore here
	if (bf->rbin->maxstrbuf && size && size > bf->rbin->maxstrbuf) {
		RZ_LOG_INFO("bin: buffer is too big (0x%08" PFMT64x "). Use -zzz or set bin.maxstrbuf (RZ_BIN_MAXSTRBUF) in rizin (rz-bin)\n", size);
		return;
	}

	RzStrEnc type;
	const char *enc = bf->rbin->strenc;
	if (!enc) {
		type = RZ_STRING_ENC_GUESS;
	} else if (!strcmp(enc, "8bit")) {
		type = RZ_STRING_ENC_8BIT;
	} else if (!strcmp(enc, "utf8")) {
		type = RZ_STRING_ENC_UTF8;
	} else if (!strcmp(enc, "utf16le")) {
		type = RZ_STRING_ENC_UTF16LE;
	} else if (!strcmp(enc, "utf32le")) {
		type = RZ_STRING_ENC_UTF32LE;
	} else if (!strcmp(enc, "utf16be")) {
		type = RZ_STRING_ENC_UTF16BE;
	} else if (!strcmp(enc, "utf32be")) {
		type = RZ_STRING_ENC_UTF32BE;
	} else if (!strcmp(enc, "ibm037")) {
		type = RZ_STRING_ENC_IBM037;
	} else if (!strcmp(enc, "ibm290")) {
		type = RZ_STRING_ENC_IBM290;
	} else if (!strcmp(enc, "ebcdices")) {
		type = RZ_STRING_ENC_EBCDIC_ES;
	} else if (!strcmp(enc, "ebcdicuk")) {
		type = RZ_STRING_ENC_EBCDIC_UK;
	} else if (!strcmp(enc, "ebcdicus")) {
		type = RZ_STRING_ENC_EBCDIC_US;
	} else {
		RZ_LOG_ERROR("bin: encoding %s not supported\n", enc);
		return;
	}
	string_scan_range(list, bf, min, from, to, type);
}

RZ_IPI RzBinFile *rz_bin_file_new(RzBin *bin, const char *file, ut64 file_sz, int fd, const char *xtrname, bool steal_ptr) {
	ut32 bf_id;
	if (!rz_id_pool_grab_id(bin->ids->pool, &bf_id)) {
		return NULL;
	}
	RzBinFile *bf = RZ_NEW0(RzBinFile);
	if (!bf) {
		return NULL;
	}

	bf->id = bf_id;
	bf->rbin = bin;
	bf->file = RZ_STR_DUP(file);
	bf->fd = fd;
	bf->curxtr = xtrname ? rz_bin_get_xtrplugin_by_name(bin, xtrname) : NULL;
	bf->size = file_sz;
	bf->xtr_data = rz_list_newf((RzListFree)rz_bin_xtrdata_free);
	bf->xtr_obj = NULL;
	bf->sdb = sdb_new0();
	return bf;
}

RZ_IPI void rz_bin_file_free(void /*RzBinFile*/ *_bf) {
	if (!_bf) {
		return;
	}
	RzBinFile *bf = _bf;
	if (bf->rbin->cur == bf) {
		bf->rbin->cur = NULL;
	}
	RzBinPlugin *plugin = rz_bin_file_cur_plugin(bf);
	// Binary format objects are connected to the
	// RzBinObject, so the plugin must destroy the
	// format data first
	if (plugin && plugin->destroy) {
		plugin->destroy(bf);
	}
	rz_buf_free(bf->buf);
	if (bf->curxtr && bf->curxtr->destroy && bf->xtr_obj) {
		bf->curxtr->free_xtr((void *)(bf->xtr_obj));
	}
	free(bf->file);
	rz_bin_object_free(bf->o);
	rz_list_free(bf->xtr_data);
	sdb_free(bf->sdb);
	if (bf->id != -1) {
		// TODO: use rz_storage api
		rz_id_pool_kick_id(bf->rbin->ids->pool, bf->id);
	}
	free(bf);
}

static RzBinPlugin *get_plugin_from_buffer(RzBin *bin, const char *pluginname, RzBuffer *buf) {
	RzBinPlugin *plugin = bin->force ? rz_bin_get_binplugin_by_name(bin, bin->force) : NULL;
	if (plugin) {
		return plugin;
	}
	plugin = pluginname ? rz_bin_get_binplugin_by_name(bin, pluginname) : NULL;
	if (plugin) {
		return plugin;
	}
	plugin = rz_bin_get_binplugin_by_buffer(bin, buf);
	if (plugin) {
		return plugin;
	}
	plugin = rz_bin_get_binplugin_by_filename(bin);
	if (plugin) {
		return plugin;
	}
	return rz_bin_get_binplugin_by_name(bin, "any");
}

RZ_API bool rz_bin_file_object_new_from_xtr_data(RzBin *bin, RzBinFile *bf, RzBinObjectLoadOptions *opts, RzBinXtrData *data) {
	rz_return_val_if_fail(bin && bf && data, false);

	ut64 offset = data->offset;
	ut64 sz = data->size;

	RzBinPlugin *plugin = get_plugin_from_buffer(bin, NULL, data->buf);
	bf->buf = rz_buf_ref(data->buf);

	RzBinObject *o = rz_bin_object_new(bf, plugin, opts, offset, sz);
	if (!o) {
		return false;
	}
	// size is set here because the reported size of the object depends on
	// if loaded from xtr plugin or partially read
	if (!o->size) {
		o->size = sz;
	}
	bf->narch = data->file_count;
	if (!o->info) {
		o->info = RZ_NEW0(RzBinInfo);
	}
	free(o->info->file);
	free(o->info->arch);
	free(o->info->machine);
	free(o->info->type);
	o->info->file = strdup(bf->file);
	o->info->arch = strdup(data->metadata->arch);
	o->info->machine = strdup(data->metadata->machine);
	o->info->type = strdup(data->metadata->type);
	o->info->bits = data->metadata->bits;
	o->info->has_crypto = bf->o->info->has_crypto;
	data->loaded = true;
	return true;
}

static bool xtr_metadata_match(RzBinXtrData *xtr_data, const char *arch, int bits) {
	if (!xtr_data->metadata || !xtr_data->metadata->arch) {
		return false;
	}
	const char *iter_arch = xtr_data->metadata->arch;
	int iter_bits = xtr_data->metadata->bits;
	return bits == iter_bits && !strcmp(iter_arch, arch) && !xtr_data->loaded;
}

RZ_IPI RzBinFile *rz_bin_file_new_from_buffer(RzBin *bin, const char *file, RzBuffer *buf, RzBinObjectLoadOptions *opts, int fd, const char *pluginname) {
	rz_return_val_if_fail(bin && file && buf, NULL);

	RzBinFile *bf = rz_bin_file_new(bin, file, rz_buf_size(buf), fd, pluginname, false);
	if (!bf) {
		return NULL;
	}

	RzListIter *item = rz_list_append(bin->binfiles, bf);
	bf->buf = rz_buf_ref(buf);
	RzBinPlugin *plugin = get_plugin_from_buffer(bin, pluginname, bf->buf);
	RzBinObject *o = rz_bin_object_new(bf, plugin, opts, 0, rz_buf_size(bf->buf));
	if (!o) {
		rz_list_delete(bin->binfiles, item);
		return NULL;
	}
	// size is set here because the reported size of the object depends on
	// if loaded from xtr plugin or partially read
	if (!o->size) {
		o->size = rz_buf_size(buf);
	}
	return bf;
}

RZ_API RzBinFile *rz_bin_file_find_by_arch_bits(RzBin *bin, const char *arch, int bits) {
	RzListIter *iter;
	RzBinFile *binfile = NULL;
	RzBinXtrData *xtr_data;

	rz_return_val_if_fail(bin && arch, NULL);

	rz_list_foreach (bin->binfiles, iter, binfile) {
		RzListIter *iter_xtr;
		if (!binfile->xtr_data) {
			continue;
		}
		// look for sub-bins in Xtr Data and Load if we need to
		rz_list_foreach (binfile->xtr_data, iter_xtr, xtr_data) {
			if (xtr_metadata_match(xtr_data, arch, bits)) {
				if (!rz_bin_file_object_new_from_xtr_data(bin, binfile, &xtr_data->obj_opts, xtr_data)) {
					return NULL;
				}
				return binfile;
			}
		}
	}
	return binfile;
}

RZ_IPI RzBinFile *rz_bin_file_find_by_id(RzBin *bin, ut32 bf_id) {
	RzBinFile *bf;
	RzListIter *iter;
	rz_list_foreach (bin->binfiles, iter, bf) {
		if (bf->id == bf_id) {
			return bf;
		}
	}
	return NULL;
}

RZ_API ut64 rz_bin_file_delete_all(RzBin *bin) {
	rz_return_val_if_fail(bin, 0);
	ut64 counter = rz_list_length(bin->binfiles);
	RzListIter *it;
	RzBinFile *bf;
	rz_list_foreach (bin->binfiles, it, bf) {
		RzEventBinFileDel ev = { bf };
		rz_event_send(bin->event, RZ_EVENT_BIN_FILE_DEL, &ev);
	}
	rz_list_purge(bin->binfiles);
	bin->cur = NULL;
	return counter;
}

RZ_API bool rz_bin_file_delete(RzBin *bin, RzBinFile *bf) {
	rz_return_val_if_fail(bin && bf, false);
	RzListIter *it = rz_list_find_ptr(bin->binfiles, bf);
	rz_return_val_if_fail(it, false); // calling del on a bf not in the bin is a programming error
	if (bin->cur == bf) {
		bin->cur = NULL;
	}
	RzEventBinFileDel ev = { bf };
	rz_event_send(bin->event, RZ_EVENT_BIN_FILE_DEL, &ev);
	rz_list_delete(bin->binfiles, it);
	return true;
}

RZ_API RzBinFile *rz_bin_file_find_by_fd(RzBin *bin, ut32 bin_fd) {
	rz_return_val_if_fail(bin, NULL);
	RzListIter *iter;
	RzBinFile *bf;

	rz_list_foreach (bin->binfiles, iter, bf) {
		if (bf->fd == bin_fd) {
			return bf;
		}
	}
	return NULL;
}

RZ_API RzBinFile *rz_bin_file_find_by_name(RzBin *bin, const char *name) {
	RzListIter *iter;
	RzBinFile *bf;

	rz_return_val_if_fail(bin && name, NULL);

	rz_list_foreach (bin->binfiles, iter, bf) {
		if (bf->file && !strcmp(bf->file, name)) {
			return bf;
		}
	}
	return NULL;
}

RZ_API bool rz_bin_file_set_cur_by_id(RzBin *bin, ut32 bin_id) {
	RzBinFile *bf = rz_bin_file_find_by_id(bin, bin_id);
	return bf ? rz_bin_file_set_cur_binfile(bin, bf) : false;
}

RZ_API bool rz_bin_file_set_cur_by_fd(RzBin *bin, ut32 bin_fd) {
	RzBinFile *bf = rz_bin_file_find_by_fd(bin, bin_fd);
	return bf ? rz_bin_file_set_cur_binfile(bin, bf) : false;
}

RZ_IPI bool rz_bin_file_set_obj(RzBin *bin, RzBinFile *bf, RzBinObject *obj) {
	rz_return_val_if_fail(bin && bf, false);
	bin->file = bf->file;
	bin->cur = bf;
	bin->narch = bf->narch;
	if (obj) {
		bf->o = obj;
	} else {
		obj = bf->o;
	}
	RzBinPlugin *plugin = rz_bin_file_cur_plugin(bf);
	if (bin->minstrlen < 1) {
		bin->minstrlen = plugin ? plugin->minstrlen : bin->minstrlen;
	}
	if (obj) {
		if (!obj->info) {
			return false;
		}
		if (!obj->info->lang) {
			obj->info->lang = rz_bin_language_to_string(obj->lang);
		}
	}
	return true;
}

RZ_API bool rz_bin_file_set_cur_binfile(RzBin *bin, RzBinFile *bf) {
	rz_return_val_if_fail(bin && bf, false);
	return rz_bin_file_set_obj(bin, bf, bf->o);
}

RZ_API bool rz_bin_file_set_cur_by_name(RzBin *bin, const char *name) {
	rz_return_val_if_fail(bin && name, false);
	RzBinFile *bf = rz_bin_file_find_by_name(bin, name);
	return rz_bin_file_set_cur_binfile(bin, bf);
}

RZ_IPI RzBinFile *rz_bin_file_xtr_load_buffer(RzBin *bin, RzBinXtrPlugin *xtr, const char *filename, RzBuffer *buf, RzBinObjectLoadOptions *obj_opts, int idx, int fd) {
	rz_return_val_if_fail(bin && xtr && buf, NULL);

	RzBinFile *bf = rz_bin_file_find_by_name(bin, filename);
	if (!bf) {
		bf = rz_bin_file_new(bin, filename, rz_buf_size(buf), fd, xtr->name, false);
		if (!bf) {
			return NULL;
		}
		rz_list_append(bin->binfiles, bf);
		if (!bin->cur) {
			bin->cur = bf;
		}
	}
	rz_list_free(bf->xtr_data);
	bf->xtr_data = NULL;
	if (xtr->extractall_from_buffer) {
		bf->xtr_data = xtr->extractall_from_buffer(bin, buf);
	} else if (xtr->extractall_from_bytes) {
		ut64 sz = 0;
		const ut8 *bytes = rz_buf_data(buf, &sz);
		RZ_LOG_INFO("TODO: Implement extractall_from_buffer in '%s' xtr.bin plugin\n", xtr->name);
		bf->xtr_data = xtr->extractall_from_bytes(bin, bytes, sz);
	}
	if (bf->xtr_data) {
		RzListIter *iter;
		RzBinXtrData *x;
		// populate xtr_data with baddr and laddr that will be used later on
		// rz_bin_file_object_new_from_xtr_data
		rz_list_foreach (bf->xtr_data, iter, x) {
			x->obj_opts = *obj_opts;
		}
	}
	bf->loadaddr = obj_opts->loadaddr;
	return bf;
}

// XXX deprecate this function imho.. wee can just access bf->buf directly
RZ_IPI bool rz_bin_file_set_bytes(RzBinFile *bf, const ut8 *bytes, ut64 sz, bool steal_ptr) {
	rz_return_val_if_fail(bf && bytes, false);
	rz_buf_free(bf->buf);
	if (steal_ptr) {
		bf->buf = rz_buf_new_with_pointers(bytes, sz, true);
	} else {
		bf->buf = rz_buf_new_with_bytes(bytes, sz);
	}
	return bf->buf != NULL;
}

RZ_API RzBinPlugin *rz_bin_file_cur_plugin(RzBinFile *bf) {
	return (bf && bf->o) ? bf->o->plugin : NULL;
}

/**
 * \brief  Generates a RzList struct containing RzBinString from a given RzBinFile
 *
 * \param  bf           The RzBinFile to use for searching for strings
 * \param  min_length   The string minimum length
 * \param  raw_strings  When set to false, it will search for strings only in the data section
 *
 * \return On success returns RzList pointer, otherwise NULL
 */
RZ_API RzList *rz_bin_file_strings(RzBinFile *bf, size_t min_length, bool raw_strings) {
	rz_return_val_if_fail(bf, NULL);
	RzListIter *iter;
	RzBinSection *section;
	RzList *ret = rz_list_newf(rz_bin_string_free);
	if (!ret) {
		RZ_LOG_ERROR("bin: cannot allocate RzList\n");
		return NULL;
	}

	if (raw_strings) {
		// returns all the strings found on the RzBinFile
		get_strings_range(bf, ret, min_length, 0, bf->size);
	} else if (bf->o && bf->o->sections && !rz_list_empty(bf->o->sections)) {
		// returns only the strings found on the RzBinFile but within the data section
		RzBinObject *o = bf->o;
		rz_list_foreach (o->sections, iter, section) {
			if (__isDataSection(bf, section)) {
				get_strings_range(bf, ret, min_length, section->paddr, section->paddr + section->size);
			}
		}
		rz_list_foreach (o->sections, iter, section) {
			if (!section->name) {
				continue;
			}
			/* load objc/swift strings */
			const int bits = (bf->o && bf->o->info) ? bf->o->info->bits : 32;
			const int cfstr_size = (bits == 64) ? 32 : 16;
			const int cfstr_offs = (bits == 64) ? 16 : 8;
			if (!strstr(section->name, "__cfstring")) {
				continue;
			}
			// XXX do not walk if bin.strings == 0
			if (section->size > bf->size) {
				continue;
			}
			ut8 *sbuf = malloc(section->size);
			if (!sbuf) {
				continue;
			}
			rz_buf_read_at(bf->buf, section->paddr + cfstr_offs, sbuf, section->size);
			for (ut64 i = 0; i < section->size; i += cfstr_size) {
				ut8 *buf = sbuf;
				ut8 *p = buf + i;
				if ((i + ((bits == 64) ? 8 : 4)) >= section->size) {
					break;
				}
				ut64 cfstr_vaddr = section->vaddr + i;
				ut64 cstr_vaddr = (bits == 64) ? rz_read_le64(p) : rz_read_le32(p);
				RzBinString *s = __stringAt(bf, ret, cstr_vaddr);
				if (!s) {
					continue;
				}
				RzBinString *bs = RZ_NEW0(RzBinString);
				if (!bs) {
					RZ_LOG_ERROR("bin: cannot allocate RzBinString\n");
					free(sbuf);
					goto fail;
				}
				bs->type = s->type;
				bs->length = s->length;
				bs->size = s->size;
				bs->ordinal = s->ordinal;
				bs->vaddr = cfstr_vaddr;
				bs->paddr = rz_bin_object_v2p(o, bs->vaddr);
				bs->string = rz_str_newf("cstr.%s", s->string);
				rz_list_append(ret, bs);
				ht_up_insert(o->strings_db, bs->vaddr, bs);
			}
			free(sbuf);
		}
	}
fail:
	return ret;
}

RZ_API ut64 rz_bin_file_get_baddr(RzBinFile *bf) {
	if (bf && bf->o) {
		return bf->o->opts.baseaddr;
	}
	return UT64_MAX;
}

RZ_API bool rz_bin_file_close(RzBin *bin, int bd) {
	rz_return_val_if_fail(bin, false);
	RzBinFile *bf = rz_id_storage_take(bin->ids, bd);
	if (bf) {
		// file_free removes the fd already.. maybe its unnecessary
		rz_id_storage_delete(bin->ids, bd);
		rz_bin_file_free(bf);
		return true;
	}
	return false;
}

static inline bool add_file_hash(RzMsgDigest *md, const char *name, RzList *list) {
	char hash[128];
	const ut8 *digest = NULL;
	RzMsgDigestSize digest_size = 0;

	digest = rz_msg_digest_get_result(md, name, &digest_size);
	if (!digest) {
		return false;
	}

	if (!strcmp(name, "entropy")) {
		double entropy = rz_read_be_double(digest);
		rz_strf(hash, "%f", entropy);
	} else {
		rz_hex_bin2str(digest, digest_size, hash);
	}

	RzBinFileHash *fh = RZ_NEW0(RzBinFileHash);
	if (!fh) {
		RZ_LOG_ERROR("Cannot allocate RzBinFileHash\n");
		return false;
	}

	fh->type = strdup(name);
	fh->hex = strdup(hash);
	rz_list_push(list, fh);
	return true;
}

/**
 * Return a list of RzBinFileHash structures with the hashes md5, sha1, sha256, crc32 and entropy
 * computed over the whole \p bf .
 */
RZ_API RZ_OWN RzList *rz_bin_file_compute_hashes(RzBin *bin, RzBinFile *bf, ut64 limit) {
	rz_return_val_if_fail(bin && bf && bf->o, NULL);
	ut64 buf_len = 0, r = 0;
	RzBinObject *o = bf->o;
	RzList *file_hashes = NULL;
	ut8 *buf = NULL;
	RzMsgDigest *md = NULL;
	const size_t blocksize = 64000;

	RzIODesc *iod = rz_io_desc_get(bin->iob.io, bf->fd);
	if (!iod) {
		return NULL;
	}

	buf_len = rz_io_desc_size(iod);
	if (buf_len > limit) {
		if (bin->verbose) {
			RZ_LOG_WARN("rz_bin_file_hash: file exceeds bin.hashlimit\n");
		}
		return NULL;
	}
	buf = malloc(blocksize);
	if (!buf) {
		RZ_LOG_ERROR("Cannot allocate buffer for hash computation\n");
		return NULL;
	}

	file_hashes = rz_list_newf((RzListFree)rz_bin_file_hash_free);
	if (!file_hashes) {
		RZ_LOG_ERROR("Cannot allocate file hash list\n");
		goto rz_bin_file_compute_hashes_bad;
	}

	md = rz_msg_digest_new();
	if (!md) {
		goto rz_bin_file_compute_hashes_bad;
	}

	if (!rz_msg_digest_configure(md, "md5") ||
		!rz_msg_digest_configure(md, "sha1") ||
		!rz_msg_digest_configure(md, "sha256") ||
		!rz_msg_digest_configure(md, "crc32") ||
		!rz_msg_digest_configure(md, "entropy")) {
		goto rz_bin_file_compute_hashes_bad;
	}
	if (!rz_msg_digest_init(md)) {
		goto rz_bin_file_compute_hashes_bad;
	}

	while (r + blocksize < buf_len) {
		rz_io_desc_seek(iod, r, RZ_IO_SEEK_SET);
		int b = rz_io_desc_read(iod, buf, blocksize);
		if (b < 0) {
			RZ_LOG_ERROR("rz_io_desc_read: can't read\n");
			goto rz_bin_file_compute_hashes_bad;
		} else if (!rz_msg_digest_update(md, buf, b)) {
			goto rz_bin_file_compute_hashes_bad;
		}
		r += b;
	}
	if (r < buf_len) {
		rz_io_desc_seek(iod, r, RZ_IO_SEEK_SET);
		const size_t rem_len = buf_len - r;
		int b = rz_io_desc_read(iod, buf, rem_len);
		if (b < 1) {
			RZ_LOG_ERROR("rz_io_desc_read: can't read\n");
		} else if (!rz_msg_digest_update(md, buf, b)) {
			goto rz_bin_file_compute_hashes_bad;
		}
	}

	if (!rz_msg_digest_final(md)) {
		goto rz_bin_file_compute_hashes_bad;
	}

	if (!add_file_hash(md, "md5", file_hashes) ||
		!add_file_hash(md, "sha1", file_hashes) ||
		!add_file_hash(md, "sha256", file_hashes) ||
		!add_file_hash(md, "crc32", file_hashes) ||
		!add_file_hash(md, "entropy", file_hashes)) {
		goto rz_bin_file_compute_hashes_bad;
	}

	if (o->plugin && o->plugin->hashes) {
		RzList *plugin_hashes = o->plugin->hashes(bf);
		rz_list_join(file_hashes, plugin_hashes);
		rz_list_free(plugin_hashes);
	}

	// TODO: add here more rows
	free(buf);
	rz_msg_digest_free(md);
	return file_hashes;

rz_bin_file_compute_hashes_bad:
	free(buf);
	rz_msg_digest_free(md);
	rz_list_free(file_hashes);
	return NULL;
}

// Set new hashes to current RzBinInfo, caller should free the returned RzList
RZ_API RzList *rz_bin_file_set_hashes(RzBin *bin, RzList /*<RzBinFileHash*/ *new_hashes) {
	rz_return_val_if_fail(bin && bin->cur && bin->cur->o && bin->cur->o->info, NULL);
	RzBinFile *bf = bin->cur;
	RzBinInfo *info = bf->o->info;

	RzList *prev_hashes = info->file_hashes;
	info->file_hashes = new_hashes;

	return prev_hashes;
}

RZ_IPI RzBinClass *rz_bin_class_new(const char *name, const char *super, int view) {
	rz_return_val_if_fail(name, NULL);
	RzBinClass *c = RZ_NEW0(RzBinClass);
	if (c) {
		c->name = strdup(name);
		c->super = super ? strdup(super) : NULL;
		c->methods = rz_list_new();
		c->fields = rz_list_new();
		c->visibility = view;
	}
	return c;
}

RZ_IPI void rz_bin_class_free(RzBinClass *k) {
	if (k && k->name) {
		free(k->name);
		free(k->super);
		rz_list_free(k->methods);
		rz_list_free(k->fields);
		free(k->visibility_str);
		free(k);
	}
}

RZ_API RzBinClass *rz_bin_file_add_class(RzBinFile *bf, const char *name, const char *super, int view) {
	rz_return_val_if_fail(name && bf && bf->o, NULL);
	RzBinClass *c = __getClass(bf, name);
	if (c) {
		if (super) {
			free(c->super);
			c->super = strdup(super);
		}
		return c;
	}
	c = rz_bin_class_new(name, super, view);
	if (c) {
		// XXX. no need for a list, the ht is iterable too
		c->index = rz_list_length(bf->o->classes);
		rz_list_append(bf->o->classes, c);
		ht_pp_insert(bf->o->classes_ht, name, c);
	}
	return c;
}

RZ_API RzBinSymbol *rz_bin_file_add_method(RzBinFile *bf, const char *klass, const char *method, int nargs) {
	rz_return_val_if_fail(bf, NULL);

	RzBinClass *c = rz_bin_file_add_class(bf, klass, NULL, 0);
	if (!c) {
		RZ_LOG_ERROR("Cannot allocate RzBinClass for '%s'\n", klass);
		return NULL;
	}
	RzBinSymbol *sym = __getMethod(bf, klass, method);
	if (!sym) {
		sym = RZ_NEW0(RzBinSymbol);
		if (sym) {
			sym->name = strdup(method);
			rz_list_append(c->methods, sym);
			const char *name = sdb_fmt("%s::%s", klass, method);
			ht_pp_insert(bf->o->methods_ht, name, sym);
		}
	}
	return sym;
}

RZ_API RzList *rz_bin_file_get_trycatch(RzBinFile *bf) {
	rz_return_val_if_fail(bf && bf->o && bf->o->plugin, NULL);
	if (bf->o->plugin->trycatch) {
		return bf->o->plugin->trycatch(bf);
	}
	return NULL;
}

RZ_API RzList *rz_bin_file_get_symbols(RzBinFile *bf) {
	rz_return_val_if_fail(bf, NULL);
	RzBinObject *o = bf->o;
	return o ? (RzList *)rz_bin_object_get_symbols(o) : NULL;
}