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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:37:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:37:38 +0000 |
commit | ae581a19fbe896a797450b9d9573fb66f2735227 (patch) | |
tree | 56c40be8518a29c9351364d13a9676aa83932dc0 /plugins/sudoers/b64_encode.c | |
parent | Initial commit. (diff) | |
download | sudo-upstream.tar.xz sudo-upstream.zip |
Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins/sudoers/b64_encode.c')
-rw-r--r-- | plugins/sudoers/b64_encode.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/plugins/sudoers/b64_encode.c b/plugins/sudoers/b64_encode.c new file mode 100644 index 0000000..8832ba9 --- /dev/null +++ b/plugins/sudoers/b64_encode.c @@ -0,0 +1,64 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2013-2018 Todd C. Miller <Todd.Miller@sudo.ws> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * This is an open source non-commercial project. Dear PVS-Studio, please check it. + * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com + */ + +#include <config.h> + +#include "sudoers.h" + +static const unsigned char base64enc_tab[64] = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + +size_t +base64_encode(const unsigned char *in, size_t in_len, char *out, size_t out_len) +{ + size_t ii, io; + unsigned int rem, v; + debug_decl(base64_encode, SUDOERS_DEBUG_MATCH); + + for (io = 0, ii = 0, v = 0, rem = 0; ii < in_len; ii++) { + unsigned char ch = in[ii]; + v = (v << 8) | ch; + rem += 8; + while (rem >= 6) { + rem -= 6; + if (io >= out_len) + debug_return_size_t((size_t)-1); /* truncation is failure */ + out[io++] = base64enc_tab[(v >> rem) & 63]; + } + } + if (rem != 0) { + v <<= (6 - rem); + if (io >= out_len) + debug_return_size_t((size_t)-1); /* truncation is failure */ + out[io++] = base64enc_tab[v&63]; + } + while (io & 3) { + if (io >= out_len) + debug_return_size_t((size_t)-1); /* truncation is failure */ + out[io++] = '='; + } + if (io >= out_len) + debug_return_size_t((size_t)-1); /* no room for NUL terminator */ + out[io] = '\0'; + debug_return_size_t(io); +} |