ubase64.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rz_util.h>

Go to the source code of this file.

Macros
#define	SZ   1024

Functions
static void	local_b64_encode (const ut8 in[3], char out[4], int len)
static int	local_b64_decode (const char in[4], ut8 out[3])
RZ_API int	rz_base64_decode (ut8 *bout, const char *bin, int len)
RZ_API ut8 *	rz_base64_decode_dyn (const char *in, int len)
RZ_API size_t	rz_base64_encode (char *bout, const ut8 *bin, size_t sz)
RZ_API char *	rz_base64_encode_dyn (const ut8 *bin, size_t sz)

Variables
static const char	cb64 [] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
static const char	cd64 [] = "|$$$}rstuvwxyz{$$$$$$$>?@ABCDEFGHIJKLMNOPQRSTUVW$$$$$$XYZ[\\]^_`abcdefghijklmnopq"

Macro Definition Documentation

SZ

#define SZ   1024

Definition at line 14 of file ubase64.c.

Function Documentation

local_b64_decode()

static int local_b64_decode ( const char  in[4], ut8  out[3]  )

static

Definition at line 28 of file ubase64.c.

                                                          {
    int len = 3;
    ut8 i, v[4] = { 0 };
    for (i = 0; i < 4; i++) {
        if (in[i] < 43 || in[i] > 122) {
            return -1;
        }
        v[i] = cd64[in[i] - 43];
        if (v[i] == '$') {
            len = i ? i - 1 : -1;
            break;
        }
        v[i] -= 62;
    }
    out[0] = v[0] << 2 | v[1] >> 4;
    out[1] = v[1] << 4 | v[2] >> 2;
    out[2] = ((v[2] << 6) & 0xc0) | v[3];
    return len;
}

References cd64, i, in, len, out, and v.

Referenced by rz_base64_decode().

local_b64_encode()

static void local_b64_encode ( const ut8  in[3], char  out[4], int  len  )

static

Definition at line 18 of file ubase64.c.

                                                                    {
    if (len < 1) {
        return;
    }
    out[0] = cb64[in[0] >> 2];
    out[1] = cb64[((in[0] & 0x03) << 4) | ((len > 1) ? ((in[1] & 0xf0) >> 4) : 0)];
    out[2] = (len > 1 ? cb64[((in[1] & 0x0f) << 2) | (len > 2 ? ((in[2] & 0xc0) >> 6) : 0)] : '=');
    out[3] = (len > 2 ? cb64[in[2] & 0x3f] : '=');
}

References cb64, in, len, and out.

Referenced by rz_base64_encode().

rz_base64_decode()

RZ_API int rz_base64_decode	(	ut8 *	bout,
		const char *	bin,
		int	len
	)

Definition at line 48 of file ubase64.c.

                                                                 {
    int in, out;
    if (len < 0) {
        len = strlen(bin);
    }
    for (in = out = 0; in + 3 < len; in += 4) {
        int ret = local_b64_decode(bin + in, bout + out);
        if (ret < 1) {
            return -1;
        }
        out += ret;
    }
    bout[out] = 0;
    /* XXX this makes no sense, just return out? */
    return (in != out) ? out : -1;
}

References in, len, local_b64_decode(), and out.

Referenced by block_load_cb(), function_load_cb(), rax(), rz_base64_decode_dyn(), rz_cf_value_data_new(), rz_cmd_help(), rz_core_write_base64d_at(), rz_hex_from_js(), rz_socket_http_accept(), sdb_decode_raw(), and update().

rz_base64_decode_dyn()

RZ_API ut8* rz_base64_decode_dyn	(	const char *	in,
		int	len
	)

Definition at line 65 of file ubase64.c.

                                                          {
    ut8 *bout;
    if (!in) {
        return NULL;
    }
    if (len < 0) {
        len = strlen(in) + 1;
    }
    bout = calloc(4, len + 1);
    if (rz_base64_decode(bout, in, len) == -1) {
        free(bout);
        return NULL;
    }
    return bout;
}

References calloc(), free(), in, len, NULL, and rz_base64_decode().

Referenced by flag_set_comment(), rz_bin_string_decode_base64(), rz_cmd_alias_set(), rz_cmd_base64_decode_handler(), rz_core_agraph_add_node(), and strings_print().

rz_base64_encode()

RZ_API size_t rz_base64_encode	(	char *	bout,
		const ut8 *	bin,
		size_t	sz
	)

Definition at line 81 of file ubase64.c.

                                                                      {
    rz_return_val_if_fail(bin, 0);
    size_t in, out;
    for (in = out = 0; in < sz; in += 3, out += 4) {
        local_b64_encode(bin + in, (char *)bout + out,
            (sz - in) > 3 ? 3 : sz - in);
    }
    bout[out] = 0;
    return out;
}

References in, local_b64_encode(), out, and rz_return_val_if_fail.

Referenced by lang_byte_array_nodejs(), pcache_save_cb(), rax(), rz_base64_encode_dyn(), rz_cmd_help(), rz_core_write_base64_at(), sdb_encode_raw(), and update().

rz_base64_encode_dyn()

RZ_API char* rz_base64_encode_dyn	(	const ut8 *	bin,
		size_t	sz
	)

Definition at line 92 of file ubase64.c.

                                                             {
    rz_return_val_if_fail(bin, NULL);
    if (sz > (SIZE_MAX - 2) / 4) {
        return NULL;
    }
    const size_t osz = (sz * 4) + 2;
    char *bout = malloc(osz);
    if (!bout) {
        return NULL;
    }
    rz_base64_encode(bout, bin, sz);
    return bout;
}

References malloc(), NULL, rz_base64_encode(), rz_return_val_if_fail, and SIZE_MAX.

Referenced by agraph_print_node(), block_store(), core_analysis_graph_construct_nodes(), foreach_offset_annotation(), function_store(), print_flag_rizin(), print_graph_agg(), rz_cmd_alias(), rz_cmd_base64_encode_handler(), rz_core_meta_print(), and rz_core_print_bb_custom().

Variable Documentation

cb64

const char cb64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"

static

Definition at line 15 of file ubase64.c.

Referenced by local_b64_encode().

cd64

const char cd64[] = "|$$$}rstuvwxyz{$$$$$$$>?@ABCDEFGHIJKLMNOPQRSTUVW$$$$$$XYZ[\\]^_`abcdefghijklmnopq"

static

Definition at line 16 of file ubase64.c.

Referenced by local_b64_decode().