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📄 base64.c(4.52 KB)
📄 base64.h(653 B)
📄 bitfield.c(1.37 KB)
📄 bitfield.h(558 B)
📄 browser-android.c(2.62 KB)
📄 browser-system.c(2.39 KB)
📄 browser-wpadebug.c(3.14 KB)
📄 browser.c(5.93 KB)
📄 browser.h(451 B)
📄 build_config.h(1.38 KB)
📄 common.c(24.26 KB)
📄 common.h(14.84 KB)
📄 const_time.h(5.45 KB)
📄 crc32.c(3.7 KB)
📄 crc32.h(297 B)
📄 edit.c(20.21 KB)
📄 edit.h(612 B)
📄 edit_readline.c(3.78 KB)
📄 edit_simple.c(1.77 KB)
📄 eloop.c(32.23 KB)
📄 eloop.h(13.77 KB)
📄 eloop_win.c(15.17 KB)
📄 ext_password.c(2.02 KB)
📄 ext_password.h(855 B)
📄 ext_password_i.h(713 B)
📄 ext_password_test.c(1.72 KB)
📄 http-utils.h(1.71 KB)
📄 http_curl.c(44.53 KB)
📄 includes.h(1.09 KB)
📄 ip_addr.c(1.02 KB)
📄 ip_addr.h(608 B)
📄 json.c(12.54 KB)
📄 json.h(1.02 KB)
📄 list.h(2.4 KB)
📄 module_tests.h(438 B)
📄 os.h(19.54 KB)
📄 os_internal.c(8.66 KB)
📄 os_none.c(3.3 KB)
📄 os_unix.c(15.06 KB)
📄 os_win32.c(4.68 KB)
📄 pcsc_funcs.c(37.61 KB)
📄 pcsc_funcs.h(1.4 KB)
📄 platform.h(508 B)
📄 radiotap.c(12.25 KB)
📄 radiotap.h(10.67 KB)
📄 radiotap_iter.h(2.86 KB)
📄 state_machine.h(5.25 KB)
📄 trace.c(8.28 KB)
📄 trace.h(1.88 KB)
📄 utils_module_tests.c(28.14 KB)
📄 uuid.c(1.8 KB)
📄 uuid.h(439 B)
📄 wpa_debug.c(18.68 KB)
📄 wpa_debug.h(12.38 KB)
📄 wpabuf.c(7.44 KB)
📄 wpabuf.h(4.14 KB)
📄 xml-utils.c(9.29 KB)
📄 xml-utils.h(4.01 KB)
📄 xml_libxml2.c(9.07 KB)

Editing: base64.c

/*
 * Base64 encoding/decoding (RFC1341)
 * Copyright (c) 2005-2019, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"
#include <stdint.h>

#include "os.h"
#include "base64.h"

static const unsigned char base64_table[65] =
	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const unsigned char base64_url_table[65] =
	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";

static unsigned char * base64_gen_encode(const unsigned char *src, size_t len,
					 size_t *out_len,
					 const unsigned char *table,
					 int add_pad)
{
	unsigned char *out, *pos;
	const unsigned char *end, *in;
	size_t olen;
	int line_len;

if (len >= SIZE_MAX / 4)
		return NULL;
	olen = len * 4 / 3 + 4; /* 3-byte blocks to 4-byte */
	if (add_pad)
		olen += olen / 72; /* line feeds */
	olen++; /* nul termination */
	if (olen < len)
		return NULL; /* integer overflow */
	out = os_malloc(olen);
	if (out == NULL)
		return NULL;

end = src + len;
	in = src;
	pos = out;
	line_len = 0;
	while (end - in >= 3) {
		*pos++ = table[(in[0] >> 2) & 0x3f];
		*pos++ = table[(((in[0] & 0x03) << 4) | (in[1] >> 4)) & 0x3f];
		*pos++ = table[(((in[1] & 0x0f) << 2) | (in[2] >> 6)) & 0x3f];
		*pos++ = table[in[2] & 0x3f];
		in += 3;
		line_len += 4;
		if (add_pad && line_len >= 72) {
			*pos++ = '\n';
			line_len = 0;
		}
	}

if (end - in) {
		*pos++ = table[(in[0] >> 2) & 0x3f];
		if (end - in == 1) {
			*pos++ = table[((in[0] & 0x03) << 4) & 0x3f];
			if (add_pad)
				*pos++ = '=';
		} else {
			*pos++ = table[(((in[0] & 0x03) << 4) |
					(in[1] >> 4)) & 0x3f];
			*pos++ = table[((in[1] & 0x0f) << 2) & 0x3f];
		}
		if (add_pad)
			*pos++ = '=';
		line_len += 4;
	}

if (add_pad && line_len)
		*pos++ = '\n';

*pos = '\0';
	if (out_len)
		*out_len = pos - out;
	return out;
}

static unsigned char * base64_gen_decode(const unsigned char *src, size_t len,
					 size_t *out_len,
					 const unsigned char *table)
{
	unsigned char dtable[256], *out, *pos, block[4], tmp;
	size_t i, count, olen;
	int pad = 0;
	size_t extra_pad;

os_memset(dtable, 0x80, 256);
	for (i = 0; i < sizeof(base64_table) - 1; i++)
		dtable[table[i]] = (unsigned char) i;
	dtable['='] = 0;

count = 0;
	for (i = 0; i < len; i++) {
		if (dtable[src[i]] != 0x80)
			count++;
	}

if (count == 0)
		return NULL;
	extra_pad = (4 - count % 4) % 4;

olen = (count + extra_pad) / 4 * 3;
	pos = out = os_malloc(olen);
	if (out == NULL)
		return NULL;

count = 0;
	for (i = 0; i < len + extra_pad; i++) {
		unsigned char val;

if (i >= len)
			val = '=';
		else
			val = src[i];
		tmp = dtable[val];
		if (tmp == 0x80)
			continue;

if (val == '=')
			pad++;
		block[count] = tmp;
		count++;
		if (count == 4) {
			*pos++ = (block[0] << 2) | (block[1] >> 4);
			*pos++ = (block[1] << 4) | (block[2] >> 2);
			*pos++ = (block[2] << 6) | block[3];
			count = 0;
			if (pad) {
				if (pad == 1)
					pos--;
				else if (pad == 2)
					pos -= 2;
				else {
					/* Invalid padding */
					os_free(out);
					return NULL;
				}
				break;
			}
		}
	}

*out_len = pos - out;
	return out;
}

/**
 * base64_encode - Base64 encode
 * @src: Data to be encoded
 * @len: Length of the data to be encoded
 * @out_len: Pointer to output length variable, or %NULL if not used
 * Returns: Allocated buffer of out_len bytes of encoded data,
 * or %NULL on failure
 *
 * Caller is responsible for freeing the returned buffer. Returned buffer is
 * nul terminated to make it easier to use as a C string. The nul terminator is
 * not included in out_len.
 */
unsigned char * base64_encode(const unsigned char *src, size_t len,
			      size_t *out_len)
{
	return base64_gen_encode(src, len, out_len, base64_table, 1);
}

unsigned char * base64_url_encode(const unsigned char *src, size_t len,
				  size_t *out_len, int add_pad)
{
	return base64_gen_encode(src, len, out_len, base64_url_table, add_pad);
}

/**
 * base64_decode - Base64 decode
 * @src: Data to be decoded
 * @len: Length of the data to be decoded
 * @out_len: Pointer to output length variable
 * Returns: Allocated buffer of out_len bytes of decoded data,
 * or %NULL on failure
 *
 * Caller is responsible for freeing the returned buffer.
 */
unsigned char * base64_decode(const unsigned char *src, size_t len,
			      size_t *out_len)
{
	return base64_gen_decode(src, len, out_len, base64_table);
}

unsigned char * base64_url_decode(const unsigned char *src, size_t len,
				  size_t *out_len)
{
	return base64_gen_decode(src, len, out_len, base64_url_table);
}

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Editing: base64.c

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