<p>laforge has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/c/libosmocore/+/25496">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">copy base64 implementation from mbedtls<br><br>Using mbedtls commit f9c599cd8ac9d00c484d4f5b027e18c6af4f9fdf before<br>they re-licensed to Apache 2.0, so we have a GPL-v2-or-later bsae64<br>implementation and avoid having code under a different license in the<br>tree.<br><br>This code is the unmodified import, so we can record any local changes<br>compared to the original version.<br><br>Change-Id: I39a9d3ab98257d21b9439b00528c744efa372c14<br>---<br>A include/osmocom/core/base64.h<br>A src/base64.c<br>2 files changed, 370 insertions(+), 0 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/96/25496/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/include/osmocom/core/base64.h b/include/osmocom/core/base64.h</span><br><span>new file mode 100644</span><br><span>index 0000000..0f7233d</span><br><span>--- /dev/null</span><br><span>+++ b/include/osmocom/core/base64.h</span><br><span>@@ -0,0 +1,86 @@</span><br><span style="color: hsl(120, 100%, 40%);">+/**</span><br><span style="color: hsl(120, 100%, 40%);">+ * \file base64.h</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * \brief RFC 1521 base64 encoding/decoding</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * This file is part of mbed TLS (https://tls.mbed.org)</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * This program is free software; you can redistribute it and/or modify</span><br><span style="color: hsl(120, 100%, 40%);">+ * it under the terms of the GNU General Public License as published by</span><br><span style="color: hsl(120, 100%, 40%);">+ * the Free Software Foundation; either version 2 of the License, or</span><br><span style="color: hsl(120, 100%, 40%);">+ * (at your option) any later version.</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * This program is distributed in the hope that it will be useful,</span><br><span style="color: hsl(120, 100%, 40%);">+ * but WITHOUT ANY WARRANTY; without even the implied warranty of</span><br><span style="color: hsl(120, 100%, 40%);">+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span><br><span style="color: hsl(120, 100%, 40%);">+ * GNU General Public License for more details.</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * You should have received a copy of the GNU General Public License along</span><br><span style="color: hsl(120, 100%, 40%);">+ * with this program; if not, write to the Free Software Foundation, Inc.,</span><br><span style="color: hsl(120, 100%, 40%);">+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+#ifndef MBEDTLS_BASE64_H</span><br><span style="color: hsl(120, 100%, 40%);">+#define MBEDTLS_BASE64_H</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#include <stddef.h></span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#define MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL -0x002A /**< Output buffer too small. */</span><br><span style="color: hsl(120, 100%, 40%);">+#define MBEDTLS_ERR_BASE64_INVALID_CHARACTER -0x002C /**< Invalid character in input. */</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#ifdef __cplusplus</span><br><span style="color: hsl(120, 100%, 40%);">+extern "C" {</span><br><span style="color: hsl(120, 100%, 40%);">+#endif</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+/**</span><br><span style="color: hsl(120, 100%, 40%);">+ * \brief Encode a buffer into base64 format</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param dst destination buffer</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param dlen size of the destination buffer</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param olen number of bytes written</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param src source buffer</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param slen amount of data to be encoded</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * \return 0 if successful, or MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL.</span><br><span style="color: hsl(120, 100%, 40%);">+ * *olen is always updated to reflect the amount</span><br><span style="color: hsl(120, 100%, 40%);">+ * of data that has (or would have) been written.</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * \note Call this function with dlen = 0 to obtain the</span><br><span style="color: hsl(120, 100%, 40%);">+ * required buffer size in *olen</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+int mbedtls_base64_encode( unsigned char *dst, size_t dlen, size_t *olen,</span><br><span style="color: hsl(120, 100%, 40%);">+ const unsigned char *src, size_t slen );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+/**</span><br><span style="color: hsl(120, 100%, 40%);">+ * \brief Decode a base64-formatted buffer</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param dst destination buffer (can be NULL for checking size)</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param dlen size of the destination buffer</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param olen number of bytes written</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param src source buffer</span><br><span style="color: hsl(120, 100%, 40%);">+ * \param slen amount of data to be decoded</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * \return 0 if successful, MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL, or</span><br><span style="color: hsl(120, 100%, 40%);">+ * MBEDTLS_ERR_BASE64_INVALID_CHARACTER if the input data is</span><br><span style="color: hsl(120, 100%, 40%);">+ * not correct. *olen is always updated to reflect the amount</span><br><span style="color: hsl(120, 100%, 40%);">+ * of data that has (or would have) been written.</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * \note Call this function with *dst = NULL or dlen = 0 to obtain</span><br><span style="color: hsl(120, 100%, 40%);">+ * the required buffer size in *olen</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+int mbedtls_base64_decode( unsigned char *dst, size_t dlen, size_t *olen,</span><br><span style="color: hsl(120, 100%, 40%);">+ const unsigned char *src, size_t slen );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+/**</span><br><span style="color: hsl(120, 100%, 40%);">+ * \brief Checkup routine</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * \return 0 if successful, or 1 if the test failed</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+int mbedtls_base64_self_test( int verbose );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#ifdef __cplusplus</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+#endif</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#endif /* base64.h */</span><br><span>diff --git a/src/base64.c b/src/base64.c</span><br><span>new file mode 100644</span><br><span>index 0000000..11cb30b</span><br><span>--- /dev/null</span><br><span>+++ b/src/base64.c</span><br><span>@@ -0,0 +1,284 @@</span><br><span style="color: hsl(120, 100%, 40%);">+/*</span><br><span style="color: hsl(120, 100%, 40%);">+ * RFC 1521 base64 encoding/decoding</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * This file is part of mbed TLS (https://tls.mbed.org)</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * This program is free software; you can redistribute it and/or modify</span><br><span style="color: hsl(120, 100%, 40%);">+ * it under the terms of the GNU General Public License as published by</span><br><span style="color: hsl(120, 100%, 40%);">+ * the Free Software Foundation; either version 2 of the License, or</span><br><span style="color: hsl(120, 100%, 40%);">+ * (at your option) any later version.</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * This program is distributed in the hope that it will be useful,</span><br><span style="color: hsl(120, 100%, 40%);">+ * but WITHOUT ANY WARRANTY; without even the implied warranty of</span><br><span style="color: hsl(120, 100%, 40%);">+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span><br><span style="color: hsl(120, 100%, 40%);">+ * GNU General Public License for more details.</span><br><span style="color: hsl(120, 100%, 40%);">+ *</span><br><span style="color: hsl(120, 100%, 40%);">+ * You should have received a copy of the GNU General Public License along</span><br><span style="color: hsl(120, 100%, 40%);">+ * with this program; if not, write to the Free Software Foundation, Inc.,</span><br><span style="color: hsl(120, 100%, 40%);">+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#if !defined(MBEDTLS_CONFIG_FILE)</span><br><span style="color: hsl(120, 100%, 40%);">+#include "mbedtls/config.h"</span><br><span style="color: hsl(120, 100%, 40%);">+#else</span><br><span style="color: hsl(120, 100%, 40%);">+#include MBEDTLS_CONFIG_FILE</span><br><span style="color: hsl(120, 100%, 40%);">+#endif</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#if defined(MBEDTLS_BASE64_C)</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#include "mbedtls/base64.h"</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#include <stdint.h></span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#if defined(MBEDTLS_SELF_TEST)</span><br><span style="color: hsl(120, 100%, 40%);">+#include <string.h></span><br><span style="color: hsl(120, 100%, 40%);">+#if defined(MBEDTLS_PLATFORM_C)</span><br><span style="color: hsl(120, 100%, 40%);">+#include "mbedtls/platform.h"</span><br><span style="color: hsl(120, 100%, 40%);">+#else</span><br><span style="color: hsl(120, 100%, 40%);">+#include <stdio.h></span><br><span style="color: hsl(120, 100%, 40%);">+#define mbedtls_printf printf</span><br><span style="color: hsl(120, 100%, 40%);">+#endif /* MBEDTLS_PLATFORM_C */</span><br><span style="color: hsl(120, 100%, 40%);">+#endif /* MBEDTLS_SELF_TEST */</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+static const unsigned char base64_enc_map[64] =</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',</span><br><span style="color: hsl(120, 100%, 40%);">+ 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',</span><br><span style="color: hsl(120, 100%, 40%);">+ 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',</span><br><span style="color: hsl(120, 100%, 40%);">+ 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',</span><br><span style="color: hsl(120, 100%, 40%);">+ 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x',</span><br><span style="color: hsl(120, 100%, 40%);">+ 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',</span><br><span style="color: hsl(120, 100%, 40%);">+ '8', '9', '+', '/'</span><br><span style="color: hsl(120, 100%, 40%);">+};</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+static const unsigned char base64_dec_map[128] =</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,</span><br><span style="color: hsl(120, 100%, 40%);">+ 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,</span><br><span style="color: hsl(120, 100%, 40%);">+ 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,</span><br><span style="color: hsl(120, 100%, 40%);">+ 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,</span><br><span style="color: hsl(120, 100%, 40%);">+ 127, 127, 127, 62, 127, 127, 127, 63, 52, 53,</span><br><span style="color: hsl(120, 100%, 40%);">+ 54, 55, 56, 57, 58, 59, 60, 61, 127, 127,</span><br><span style="color: hsl(120, 100%, 40%);">+ 127, 64, 127, 127, 127, 0, 1, 2, 3, 4,</span><br><span style="color: hsl(120, 100%, 40%);">+ 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,</span><br><span style="color: hsl(120, 100%, 40%);">+ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,</span><br><span style="color: hsl(120, 100%, 40%);">+ 25, 127, 127, 127, 127, 127, 127, 26, 27, 28,</span><br><span style="color: hsl(120, 100%, 40%);">+ 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,</span><br><span style="color: hsl(120, 100%, 40%);">+ 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,</span><br><span style="color: hsl(120, 100%, 40%);">+ 49, 50, 51, 127, 127, 127, 127, 127</span><br><span style="color: hsl(120, 100%, 40%);">+};</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+/*</span><br><span style="color: hsl(120, 100%, 40%);">+ * Encode a buffer into base64 format</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+int mbedtls_base64_encode( unsigned char *dst, size_t dlen, size_t *olen,</span><br><span style="color: hsl(120, 100%, 40%);">+ const unsigned char *src, size_t slen )</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ size_t i, n;</span><br><span style="color: hsl(120, 100%, 40%);">+ int C1, C2, C3;</span><br><span style="color: hsl(120, 100%, 40%);">+ unsigned char *p;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( slen == 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ *olen = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+ return( 0 );</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ n = ( slen << 3 ) / 6;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ switch( ( slen << 3 ) - ( n * 6 ) )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ case 2: n += 3; break;</span><br><span style="color: hsl(120, 100%, 40%);">+ case 4: n += 2; break;</span><br><span style="color: hsl(120, 100%, 40%);">+ default: break;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( dlen < n + 1 )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ *olen = n + 1;</span><br><span style="color: hsl(120, 100%, 40%);">+ return( MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL );</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ n = ( slen / 3 ) * 3;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ for( i = 0, p = dst; i < n; i += 3 )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ C1 = *src++;</span><br><span style="color: hsl(120, 100%, 40%);">+ C2 = *src++;</span><br><span style="color: hsl(120, 100%, 40%);">+ C3 = *src++;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ *p++ = base64_enc_map[(C1 >> 2) & 0x3F];</span><br><span style="color: hsl(120, 100%, 40%);">+ *p++ = base64_enc_map[(((C1 & 3) << 4) + (C2 >> 4)) & 0x3F];</span><br><span style="color: hsl(120, 100%, 40%);">+ *p++ = base64_enc_map[(((C2 & 15) << 2) + (C3 >> 6)) & 0x3F];</span><br><span style="color: hsl(120, 100%, 40%);">+ *p++ = base64_enc_map[C3 & 0x3F];</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( i < slen )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ C1 = *src++;</span><br><span style="color: hsl(120, 100%, 40%);">+ C2 = ( ( i + 1 ) < slen ) ? *src++ : 0;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ *p++ = base64_enc_map[(C1 >> 2) & 0x3F];</span><br><span style="color: hsl(120, 100%, 40%);">+ *p++ = base64_enc_map[(((C1 & 3) << 4) + (C2 >> 4)) & 0x3F];</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( ( i + 1 ) < slen )</span><br><span style="color: hsl(120, 100%, 40%);">+ *p++ = base64_enc_map[((C2 & 15) << 2) & 0x3F];</span><br><span style="color: hsl(120, 100%, 40%);">+ else *p++ = '=';</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ *p++ = '=';</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ *olen = p - dst;</span><br><span style="color: hsl(120, 100%, 40%);">+ *p = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ return( 0 );</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+/*</span><br><span style="color: hsl(120, 100%, 40%);">+ * Decode a base64-formatted buffer</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+int mbedtls_base64_decode( unsigned char *dst, size_t dlen, size_t *olen,</span><br><span style="color: hsl(120, 100%, 40%);">+ const unsigned char *src, size_t slen )</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ size_t i, n;</span><br><span style="color: hsl(120, 100%, 40%);">+ uint32_t j, x;</span><br><span style="color: hsl(120, 100%, 40%);">+ unsigned char *p;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* First pass: check for validity and get output length */</span><br><span style="color: hsl(120, 100%, 40%);">+ for( i = n = j = 0; i < slen; i++ )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Skip spaces before checking for EOL */</span><br><span style="color: hsl(120, 100%, 40%);">+ x = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+ while( i < slen && src[i] == ' ' )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ ++i;</span><br><span style="color: hsl(120, 100%, 40%);">+ ++x;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Spaces at end of buffer are OK */</span><br><span style="color: hsl(120, 100%, 40%);">+ if( i == slen )</span><br><span style="color: hsl(120, 100%, 40%);">+ break;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( ( slen - i ) >= 2 &&</span><br><span style="color: hsl(120, 100%, 40%);">+ src[i] == '\r' && src[i + 1] == '\n' )</span><br><span style="color: hsl(120, 100%, 40%);">+ continue;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( src[i] == '\n' )</span><br><span style="color: hsl(120, 100%, 40%);">+ continue;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Space inside a line is an error */</span><br><span style="color: hsl(120, 100%, 40%);">+ if( x != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( src[i] == '=' && ++j > 2 )</span><br><span style="color: hsl(120, 100%, 40%);">+ return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( src[i] > 127 || base64_dec_map[src[i]] == 127 )</span><br><span style="color: hsl(120, 100%, 40%);">+ return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( base64_dec_map[src[i]] < 64 && j != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ n++;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( n == 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ return( 0 );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ n = ( ( n * 6 ) + 7 ) >> 3;</span><br><span style="color: hsl(120, 100%, 40%);">+ n -= j;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( dst == NULL || dlen < n )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ *olen = n;</span><br><span style="color: hsl(120, 100%, 40%);">+ return( MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL );</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ for( j = 3, n = x = 0, p = dst; i > 0; i--, src++ )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ if( *src == '\r' || *src == '\n' || *src == ' ' )</span><br><span style="color: hsl(120, 100%, 40%);">+ continue;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ j -= ( base64_dec_map[*src] == 64 );</span><br><span style="color: hsl(120, 100%, 40%);">+ x = ( x << 6 ) | ( base64_dec_map[*src] & 0x3F );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( ++n == 4 )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ n = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+ if( j > 0 ) *p++ = (unsigned char)( x >> 16 );</span><br><span style="color: hsl(120, 100%, 40%);">+ if( j > 1 ) *p++ = (unsigned char)( x >> 8 );</span><br><span style="color: hsl(120, 100%, 40%);">+ if( j > 2 ) *p++ = (unsigned char)( x );</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ *olen = p - dst;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ return( 0 );</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#if defined(MBEDTLS_SELF_TEST)</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+static const unsigned char base64_test_dec[64] =</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ 0x24, 0x48, 0x6E, 0x56, 0x87, 0x62, 0x5A, 0xBD,</span><br><span style="color: hsl(120, 100%, 40%);">+ 0xBF, 0x17, 0xD9, 0xA2, 0xC4, 0x17, 0x1A, 0x01,</span><br><span style="color: hsl(120, 100%, 40%);">+ 0x94, 0xED, 0x8F, 0x1E, 0x11, 0xB3, 0xD7, 0x09,</span><br><span style="color: hsl(120, 100%, 40%);">+ 0x0C, 0xB6, 0xE9, 0x10, 0x6F, 0x22, 0xEE, 0x13,</span><br><span style="color: hsl(120, 100%, 40%);">+ 0xCA, 0xB3, 0x07, 0x05, 0x76, 0xC9, 0xFA, 0x31,</span><br><span style="color: hsl(120, 100%, 40%);">+ 0x6C, 0x08, 0x34, 0xFF, 0x8D, 0xC2, 0x6C, 0x38,</span><br><span style="color: hsl(120, 100%, 40%);">+ 0x00, 0x43, 0xE9, 0x54, 0x97, 0xAF, 0x50, 0x4B,</span><br><span style="color: hsl(120, 100%, 40%);">+ 0xD1, 0x41, 0xBA, 0x95, 0x31, 0x5A, 0x0B, 0x97</span><br><span style="color: hsl(120, 100%, 40%);">+};</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+static const unsigned char base64_test_enc[] =</span><br><span style="color: hsl(120, 100%, 40%);">+ "JEhuVodiWr2/F9mixBcaAZTtjx4Rs9cJDLbpEG8i7hPK"</span><br><span style="color: hsl(120, 100%, 40%);">+ "swcFdsn6MWwINP+Nwmw4AEPpVJevUEvRQbqVMVoLlw==";</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+/*</span><br><span style="color: hsl(120, 100%, 40%);">+ * Checkup routine</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+int mbedtls_base64_self_test( int verbose )</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ size_t len;</span><br><span style="color: hsl(120, 100%, 40%);">+ const unsigned char *src;</span><br><span style="color: hsl(120, 100%, 40%);">+ unsigned char buffer[128];</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( verbose != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ mbedtls_printf( " Base64 encoding test: " );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ src = base64_test_dec;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( mbedtls_base64_encode( buffer, sizeof( buffer ), &len, src, 64 ) != 0 ||</span><br><span style="color: hsl(120, 100%, 40%);">+ memcmp( base64_test_enc, buffer, 88 ) != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ if( verbose != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ mbedtls_printf( "failed\n" );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ return( 1 );</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( verbose != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ mbedtls_printf( "passed\n Base64 decoding test: " );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ src = base64_test_enc;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( mbedtls_base64_decode( buffer, sizeof( buffer ), &len, src, 88 ) != 0 ||</span><br><span style="color: hsl(120, 100%, 40%);">+ memcmp( base64_test_dec, buffer, 64 ) != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ {</span><br><span style="color: hsl(120, 100%, 40%);">+ if( verbose != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ mbedtls_printf( "failed\n" );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ return( 1 );</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if( verbose != 0 )</span><br><span style="color: hsl(120, 100%, 40%);">+ mbedtls_printf( "passed\n\n" );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ return( 0 );</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#endif /* MBEDTLS_SELF_TEST */</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#endif /* MBEDTLS_BASE64_C */</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/c/libosmocore/+/25496">change 25496</a>. To unsubscribe, or for help writing mail filters, visit <a href="https://gerrit.osmocom.org/settings">settings</a>.</p><div itemscope itemtype="http://schema.org/EmailMessage"><div itemscope itemprop="action" itemtype="http://schema.org/ViewAction"><link itemprop="url" href="https://gerrit.osmocom.org/c/libosmocore/+/25496"/><meta itemprop="name" content="View Change"/></div></div>
<div style="display:none"> Gerrit-Project: libosmocore </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-Change-Id: I39a9d3ab98257d21b9439b00528c744efa372c14 </div>
<div style="display:none"> Gerrit-Change-Number: 25496 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: laforge <laforge@osmocom.org> </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>