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113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
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This file is part of Pretty Curved Privacy (pcp1).
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Copyright (C) 2013-2014 T.v.Dein.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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You can contact me by mail: <tom AT vondein DOT org>.
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*/
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#include "platform.h"
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#ifndef HAVE_ARC4RANDOM
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u_int32_t arc4random() {
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return randombytes_random();
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}
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#endif
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#ifndef HAVE_ARC4RANDOM_BUF
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#include <sodium.h>
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void arc4random_buf(void *buf, size_t nbytes) {
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randombytes((unsigned char*)buf, nbytes);
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}
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#endif
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#ifndef HAVE_ERR_H
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void err(int eval, const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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fprintf(stderr, "pcp1");
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if (fmt != NULL) {
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fprintf(stderr, ": ");
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vfprintf(stderr, fmt, ap);
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}
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fprintf(stderr, ": %s\n", strerror(errno));
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va_end(ap);
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}
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#endif
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#ifndef HAVE_VASPRINTF
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int vasprintf(char **ret, const char *format, va_list args) {
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va_list copy;
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va_copy(copy, args);
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*ret = 0;
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int count = vsnprintf(NULL, 0, format, args);
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if (count >= 0) {
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char* buffer = (char *)malloc(count + 1);
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if (buffer != NULL) {
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count = vsnprintf(buffer, count + 1, format, copy);
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if (count < 0)
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free(buffer);
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else
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*ret = buffer;
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}
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}
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va_end(copy); /* Each va_start() or va_copy() needs a va_end() */
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return count;
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}
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#endif
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#ifndef HAVE_STRNLEN
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size_t
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strnlen(const char *msg, size_t maxlen)
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{
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size_t i;
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for (i=0; i<maxlen; i++)
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if (msg[i] == '\0')
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break;
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return i;
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}
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#endif
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#ifndef HAVE_STRNSTR
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/* via FreeBSD libc */
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char *
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strnstr(const char *s, const char *find, size_t slen)
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{
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char c, sc;
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size_t len;
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if ((c = *find++) != '\0') {
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len = strlen(find);
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do {
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do {
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if (slen-- < 1 || (sc = *s++) == '\0')
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return (NULL);
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} while (sc != c);
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if (len > slen)
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return (NULL);
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} while (strncmp(s, find, len) != 0);
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s--;
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}
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return ((char *)s);
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}
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#endif
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