FS-9952: Add base64 code (from verto)

2026-11-15 22:08:33 +00:00 · 2017-03-22 17:42:49 -04:00
1 parent 59b1ab829e
commit 2bce38afce
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2017 FreeSWITCH Solutions LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef _KS_BASE64_H__
+#define _KS_BASE64_H__
+
+#include <ks.h>
+
+KS_DECLARE(ks_status_t) ks_b64_encode(unsigned char *in, ks_size_t ilen, unsigned char *out, ks_size_t olen);
+KS_DECLARE(ks_size_t) ks_b64_decode(char *in, char *out, ks_size_t olen);
+
+#endif
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
+ */
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2017 FreeSWITCH Solutions LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <ks_base64.h>
+
+
+static const char ks_b64_table[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+
+KS_DECLARE(ks_status_t) ks_b64_encode(unsigned char *in, ks_size_t ilen, unsigned char *out, ks_size_t olen)
+{
+	int y = 0, bytes = 0;
+	size_t x = 0;
+	unsigned int b = 0, l = 0;
+
+	for (x = 0; x < ilen; x++) {
+		b = (b << 8) + in[x];
+		l += 8;
+
+		while (l >= 6) {
+			out[bytes++] = ks_b64_table[(b >> (l -= 6)) % 64];
+			if (bytes >= (int)olen - 1) {
+				goto end;
+			}
+			if (++y != 72) {
+				continue;
+			}
+			/* out[bytes++] = '\n'; */
+			y = 0;
+		}
+	}
+
+	if (l > 0) {
+		out[bytes++] = ks_b64_table[((b % 16) << (6 - l)) % 64];
+	}
+	if (l != 0) {
+		while (l < 6 && bytes < (int)olen - 1) {
+			out[bytes++] = '=', l += 2;
+		}
+	}
+
+  end:
+
+	out[bytes] = '\0';
+
+	return KS_STATUS_SUCCESS;
+}
+
+KS_DECLARE(ks_size_t) ks_b64_decode(char *in, char *out, ks_size_t olen)
+{
+
+	char l64[256];
+	int b = 0, c, l = 0, i;
+	char *ip, *op = out;
+	size_t ol = 0;
+
+	for (i = 0; i < 256; i++) {
+		l64[i] = -1;
+	}
+
+	for (i = 0; i < 64; i++) {
+		l64[(int) ks_b64_table[i]] = (char) i;
+	}
+
+	for (ip = in; ip && *ip; ip++) {
+		c = l64[(int) *ip];
+		if (c == -1) {
+			continue;
+		}
+
+		b = (b << 6) + c;
+		l += 6;
+
+		while (l >= 8) {
+			op[ol++] = (char) ((b >> (l -= 8)) % 256);
+			if (ol >= olen - 2) {
+				goto end;
+			}
+		}
+	}
+
+  end:
+
+	op[ol++] = '\0';
+
+	return ol;
+}
+
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
+ */