mirror of
git://anongit.mindrot.org/openssh.git
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07d86bec5e
[auth-bsdauth.c auth-skey.c auth.c auth2-chall.c channels.c]
[clientloop.c deattack.c gss-genr.c kex.c key.c misc.c moduli.c]
[monitor.c monitor_wrap.c packet.c scard.c sftp-server.c ssh-agent.c]
[ssh-keyscan.c ssh.c sshconnect.c sshconnect2.c sshd.c uuencode.c]
[xmalloc.c xmalloc.h]
introduce xcalloc() and xasprintf() failure-checked allocations
functions and use them throughout openssh
xcalloc is particularly important because malloc(nmemb * size) is a
dangerous idiom (subject to integer overflow) and it is time for it
to die
feedback and ok deraadt@
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
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* Copyright (c) 2000 Markus Friedl. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "includes.h"
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#include "xmalloc.h"
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#include "uuencode.h"
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int
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uuencode(const u_char *src, u_int srclength,
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char *target, size_t targsize)
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{
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return __b64_ntop(src, srclength, target, targsize);
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}
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int
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uudecode(const char *src, u_char *target, size_t targsize)
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{
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int len;
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char *encoded, *p;
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/* copy the 'readonly' source */
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encoded = xstrdup(src);
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/* skip whitespace and data */
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for (p = encoded; *p == ' ' || *p == '\t'; p++)
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;
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for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
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;
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/* and remove trailing whitespace because __b64_pton needs this */
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*p = '\0';
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len = __b64_pton(encoded, target, targsize);
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xfree(encoded);
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return len;
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}
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void
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dump_base64(FILE *fp, u_char *data, u_int len)
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{
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char *buf;;
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int i, n;
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if (len > 65536) {
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fprintf(fp, "dump_base64: len > 65536\n");
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return;
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}
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buf = xmalloc(2*len);
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n = uuencode(data, len, buf, 2*len);
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for (i = 0; i < n; i++) {
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fprintf(fp, "%c", buf[i]);
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if (i % 70 == 69)
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fprintf(fp, "\n");
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}
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if (i % 70 != 69)
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fprintf(fp, "\n");
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xfree(buf);
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}
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