ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/utils/base64.c b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/utils/base64.c
new file mode 100644
index 0000000..0d121c1
--- /dev/null
+++ b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/utils/base64.c
@@ -0,0 +1,208 @@
+/*
+ * 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 "utils/common.h"
+#include "os.h"
+#include "base64.h"
+
+static const char base64_table[65] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+static const char base64_url_table[65] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
+
+
+#define BASE64_PAD BIT(0)
+#define BASE64_LF BIT(1)
+
+
+static char * base64_gen_encode(const unsigned char *src, size_t len,
+ size_t *out_len, const char *table, int add_pad)
+{
+ 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 & BASE64_LF)
+ 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 & BASE64_LF) && 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 & BASE64_PAD)
+ *pos++ = '=';
+ } else {
+ *pos++ = table[(((in[0] & 0x03) << 4) |
+ (in[1] >> 4)) & 0x3f];
+ *pos++ = table[((in[1] & 0x0f) << 2) & 0x3f];
+ }
+ if (add_pad & BASE64_PAD)
+ *pos++ = '=';
+ line_len += 4;
+ }
+
+ if ((add_pad & BASE64_LF) && line_len)
+ *pos++ = '\n';
+
+ *pos = '\0';
+ if (out_len)
+ *out_len = pos - out;
+ return out;
+}
+
+
+static unsigned char * base64_gen_decode(const char *src, size_t len,
+ size_t *out_len, const 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[(unsigned char) table[i]] = (unsigned char) i;
+ dtable['='] = 0;
+
+ count = 0;
+ for (i = 0; i < len; i++) {
+ if (dtable[(unsigned char) 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.
+ */
+char * base64_encode(const void *src, size_t len, size_t *out_len)
+{
+ return base64_gen_encode(src, len, out_len, base64_table,
+ BASE64_PAD | BASE64_LF);
+}
+
+
+char * base64_encode_no_lf(const void *src, size_t len, size_t *out_len)
+{
+ return base64_gen_encode(src, len, out_len, base64_table, BASE64_PAD);
+}
+
+
+char * base64_url_encode(const void *src, size_t len, size_t *out_len)
+{
+ return base64_gen_encode(src, len, out_len, base64_url_table, 0);
+}
+
+
+/**
+ * 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 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 char *src, size_t len, size_t *out_len)
+{
+ return base64_gen_decode(src, len, out_len, base64_url_table);
+}