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rt-thread-official/bsp/stm32/stm32h750-artpi/board/port/wifi_config.c

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/*
* File : wifi_config.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2018-09-04 ZeroFree first implementation
* 2019-06-14 armink add easyflash v4.0 support
*/
#include <rtthread.h>
#ifdef BSP_USING_WIFI
#include <wlan_mgnt.h>
#include <wlan_cfg.h>
#include <wlan_prot.h>
#include <easyflash.h>
#include <fal.h>
#include <stdio.h>
#include <stdlib.h>
#if (EF_SW_VERSION_NUM < 0x40000)
static char *str_base64_encode_len(const void *src, char *out, int input_length);
static int str_base64_decode(const char *data, int input_length, char *decoded_data);
static const unsigned char base64_table[65] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const char base64_decode_table[256] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x3F,
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static char *str_base64_encode_len(const void *src, char *out, int len)
{
unsigned char *pos;
const unsigned char *end, *in;
size_t olen;
olen = len * 4 / 3 + 4; /* 3-byte blocks to 4-byte */
olen += olen / 72; /* line feeds */
olen++; /* nul termination */
end = (const unsigned char *)src + len;
in = (const unsigned char *)src;
pos = (unsigned char *)out;
while (end - in >= 3)
{
*pos++ = base64_table[in[0] >> 2];
*pos++ = base64_table[((in[0] & 0x03) << 4) | (in[1] >> 4)];
*pos++ = base64_table[((in[1] & 0x0f) << 2) | (in[2] >> 6)];
*pos++ = base64_table[in[2] & 0x3f];
in += 3;
}
if (end - in)
{
*pos++ = base64_table[in[0] >> 2];
if (end - in == 1)
{
*pos++ = base64_table[(in[0] & 0x03) << 4];
*pos++ = '=';
}
else
{
*pos++ = base64_table[((in[0] & 0x03) << 4) |
(in[1] >> 4)];
*pos++ = base64_table[(in[1] & 0x0f) << 2];
}
*pos++ = '=';
}
*pos = '\0';
return (char *)out;
}
/*
* return: length, 0 is error.
*/
static int str_base64_decode(const char *data, int input_length, char *decoded_data)
{
int out_len;
int i, j;
if (input_length % 4 != 0) return 0;
out_len = input_length / 4 * 3;
if (data[input_length - 1] == '=') out_len--;
if (data[input_length - 2] == '=') out_len--;
for (i = 0, j = 0; i < input_length;)
{
uint32_t sextet_a = data[i] == '=' ? 0 & i++ : base64_decode_table[data[i++]];
uint32_t sextet_b = data[i] == '=' ? 0 & i++ : base64_decode_table[data[i++]];
uint32_t sextet_c = data[i] == '=' ? 0 & i++ : base64_decode_table[data[i++]];
uint32_t sextet_d = data[i] == '=' ? 0 & i++ : base64_decode_table[data[i++]];
uint32_t triple = (sextet_a << 3 * 6)
+ (sextet_b << 2 * 6)
+ (sextet_c << 1 * 6)
+ (sextet_d << 0 * 6);
if (j < out_len) decoded_data[j++] = (triple >> 2 * 8) & 0xFF;
if (j < out_len) decoded_data[j++] = (triple >> 1 * 8) & 0xFF;
if (j < out_len) decoded_data[j++] = (triple >> 0 * 8) & 0xFF;
}
return out_len;
}
static int read_cfg(void *buff, int len)
{
char *wlan_cfg_info = RT_NULL;
wlan_cfg_info = ef_get_env("wlan_cfg_info");
if (wlan_cfg_info != RT_NULL)
{
str_base64_decode(wlan_cfg_info, rt_strlen(wlan_cfg_info), buff);
return len;
}
else
{
return 0;
}
}
static int get_len(void)
{
int len;
char *wlan_cfg_len = RT_NULL;
wlan_cfg_len = ef_get_env("wlan_cfg_len");
if (wlan_cfg_len == RT_NULL)
{
len = 0;
}
else
{
len = atoi(wlan_cfg_len);
}
return len;
}
static int write_cfg(void *buff, int len)
{
char wlan_cfg_len[12] = {0};
char *base64_buf = RT_NULL;
base64_buf = rt_malloc(len * 4 / 3 + 4); /* 3-byte blocks to 4-byte, and the end. */
if (base64_buf == RT_NULL)
{
return -RT_ENOMEM;
}
rt_memset(base64_buf, 0, len);
/* interger to string */
sprintf(wlan_cfg_len, "%d", len);
/* set and store the wlan config lengths to Env */
ef_set_env("wlan_cfg_len", wlan_cfg_len);
str_base64_encode_len(buff, base64_buf, len);
/* set and store the wlan config information to Env */
ef_set_env("wlan_cfg_info", base64_buf);
ef_save_env();
rt_free(base64_buf);
return len;
}
#else
static int read_cfg(void *buff, int len)
{
size_t saved_len;
ef_get_env_blob("wlan_cfg_info", buff, len, &saved_len);
if (saved_len == 0)
{
return 0;
}
return len;
}
static int get_len(void)
{
int len;
size_t saved_len;
ef_get_env_blob("wlan_cfg_len", &len, sizeof(len), &saved_len);
if (saved_len == 0)
{
return 0;
}
return len;
}
static int write_cfg(void *buff, int len)
{
/* set and store the wlan config lengths to Env */
ef_set_env_blob("wlan_cfg_len", &len, sizeof(len));
/* set and store the wlan config information to Env */
ef_set_env_blob("wlan_cfg_info", buff, len);
return len;
}
#endif /* (EF_SW_VERSION_NUM < 0x40000) */
static const struct rt_wlan_cfg_ops ops =
{
read_cfg,
get_len,
write_cfg
};
void wlan_autoconnect_init(void)
{
fal_init();
easyflash_init();
rt_wlan_cfg_set_ops(&ops);
rt_wlan_cfg_cache_refresh();
}
#endif
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