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-rw-r--r--src/libcryptobox/base64/base64.c445
1 files changed, 445 insertions, 0 deletions
diff --git a/src/libcryptobox/base64/base64.c b/src/libcryptobox/base64/base64.c
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--- /dev/null
+++ b/src/libcryptobox/base64/base64.c
@@ -0,0 +1,445 @@
+/*
+ * Copyright 2023 Vsevolod Stakhov
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "config.h"
+#include "cryptobox.h"
+#include "base64.h"
+#include "platform_config.h"
+#include "str_util.h"
+#include "util.h"
+#include "contrib/libottery/ottery.h"
+
+extern unsigned cpu_config;
+const uint8_t
+ base64_table_dec[256] =
+ {
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 62,
+ 255,
+ 255,
+ 255,
+ 63,
+ 52,
+ 53,
+ 54,
+ 55,
+ 56,
+ 57,
+ 58,
+ 59,
+ 60,
+ 61,
+ 255,
+ 255,
+ 255,
+ 254,
+ 255,
+ 255,
+ 255,
+ 0,
+ 1,
+ 2,
+ 3,
+ 4,
+ 5,
+ 6,
+ 7,
+ 8,
+ 9,
+ 10,
+ 11,
+ 12,
+ 13,
+ 14,
+ 15,
+ 16,
+ 17,
+ 18,
+ 19,
+ 20,
+ 21,
+ 22,
+ 23,
+ 24,
+ 25,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 26,
+ 27,
+ 28,
+ 29,
+ 30,
+ 31,
+ 32,
+ 33,
+ 34,
+ 35,
+ 36,
+ 37,
+ 38,
+ 39,
+ 40,
+ 41,
+ 42,
+ 43,
+ 44,
+ 45,
+ 46,
+ 47,
+ 48,
+ 49,
+ 50,
+ 51,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+ 255,
+};
+
+static const char base64_alphabet[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/";
+
+typedef struct base64_impl {
+ unsigned short enabled;
+ unsigned short min_len;
+ unsigned int cpu_flags;
+ const char *desc;
+ int (*decode)(const char *in, size_t inlen,
+ unsigned char *out, size_t *outlen);
+} base64_impl_t;
+
+#define BASE64_DECLARE(ext) \
+ int base64_decode_##ext(const char *in, size_t inlen, unsigned char *out, size_t *outlen);
+#define BASE64_IMPL(cpuflags, min_len, desc, ext) \
+ { \
+ 0, (min_len), (cpuflags), desc, base64_decode_##ext \
+ }
+
+BASE64_DECLARE(ref);
+#define BASE64_REF BASE64_IMPL(0, 0, "ref", ref)
+
+#ifdef RSPAMD_HAS_TARGET_ATTR
+#if defined(HAVE_SSE42) && defined(__x86_64__)
+int base64_decode_sse42(const char *in, size_t inlen,
+ unsigned char *out, size_t *outlen) __attribute__((__target__("sse4.2")));
+
+BASE64_DECLARE(sse42);
+#define BASE64_SSE42 BASE64_IMPL(CPUID_SSE42, 24, "sse42", sse42)
+#endif
+#endif
+
+#ifdef RSPAMD_HAS_TARGET_ATTR
+#if defined(HAVE_AVX2) && defined(__x86_64__)
+int base64_decode_avx2(const char *in, size_t inlen,
+ unsigned char *out, size_t *outlen) __attribute__((__target__("avx2")));
+
+BASE64_DECLARE(avx2);
+#define BASE64_AVX2 BASE64_IMPL(CPUID_AVX2, 128, "avx2", avx2)
+#endif
+#endif
+
+static base64_impl_t base64_list[] = {
+ BASE64_REF,
+#ifdef BASE64_SSE42
+ BASE64_SSE42,
+#endif
+#ifdef BASE64_AVX2
+ BASE64_AVX2,
+#endif
+};
+
+static const base64_impl_t *base64_ref = &base64_list[0];
+
+const char *
+base64_load(void)
+{
+ guint i;
+ const base64_impl_t *opt_impl = base64_ref;
+
+ /* Enable reference */
+ base64_list[0].enabled = true;
+
+ if (cpu_config != 0) {
+ for (i = 1; i < G_N_ELEMENTS(base64_list); i++) {
+ if (base64_list[i].cpu_flags & cpu_config) {
+ base64_list[i].enabled = true;
+ opt_impl = &base64_list[i];
+ }
+ }
+ }
+
+
+ return opt_impl->desc;
+}
+
+gboolean
+rspamd_cryptobox_base64_decode(const gchar *in, gsize inlen,
+ guchar *out, gsize *outlen)
+{
+ const base64_impl_t *opt_impl = base64_ref;
+
+ for (gint i = G_N_ELEMENTS(base64_list) - 1; i > 0; i--) {
+ if (base64_list[i].enabled && base64_list[i].min_len <= inlen) {
+ opt_impl = &base64_list[i];
+ break;
+ }
+ }
+
+ return opt_impl->decode(in, inlen, out, outlen);
+}
+
+double
+base64_test(bool generic, size_t niters, size_t len, size_t str_len)
+{
+ size_t cycles;
+ guchar *in, *out, *tmp;
+ gdouble t1, t2, total = 0;
+ gsize outlen;
+
+ g_assert(len > 0);
+ in = g_malloc(len);
+ tmp = g_malloc(len);
+ ottery_rand_bytes(in, len);
+
+ out = rspamd_encode_base64_fold(in, len, str_len, &outlen,
+ RSPAMD_TASK_NEWLINES_CRLF);
+
+ if (generic) {
+ base64_list[0].decode(out, outlen, tmp, &len);
+ }
+ else {
+ rspamd_cryptobox_base64_decode(out, outlen, tmp, &len);
+ }
+
+ g_assert(memcmp(in, tmp, len) == 0);
+
+ for (cycles = 0; cycles < niters; cycles++) {
+ t1 = rspamd_get_ticks(TRUE);
+ if (generic) {
+ base64_list[0].decode(out, outlen, tmp, &len);
+ }
+ else {
+ rspamd_cryptobox_base64_decode(out, outlen, tmp, &len);
+ }
+ t2 = rspamd_get_ticks(TRUE);
+ total += t2 - t1;
+ }
+
+ g_free(in);
+ g_free(tmp);
+ g_free(out);
+
+ return total;
+}
+
+
+gboolean
+rspamd_cryptobox_base64_is_valid(const gchar *in, gsize inlen)
+{
+ const guchar *p, *end;
+
+ if (inlen == 0) {
+ return FALSE;
+ }
+
+ p = in;
+ end = in + inlen;
+
+ while (p < end && *p != '=') {
+ if (!g_ascii_isspace(*p)) {
+ if (base64_table_dec[*p] == 255) {
+ return FALSE;
+ }
+ }
+ p++;
+ }
+
+ return TRUE;
+} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 05:22:39 +0000