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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 /lib/util/getdelim.c | |
parent | Initial commit. (diff) | |
download | sudo-ae581a19fbe896a797450b9d9573fb66f2735227.tar.xz sudo-ae581a19fbe896a797450b9d9573fb66f2735227.zip |
Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/util/getdelim.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/lib/util/getdelim.c b/lib/util/getdelim.c new file mode 100644 index 0000000..53687a1 --- /dev/null +++ b/lib/util/getdelim.c @@ -0,0 +1,82 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2019-2020 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> + +#ifndef HAVE_GETDELIM + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <limits.h> + +#include "sudo_compat.h" + +ssize_t +sudo_getdelim(char **buf, size_t *bufsize, int delim, FILE *fp) +{ + char *cp, *ep; + int ch; + + if (*buf == NULL || *bufsize == 0) { + char *tmp = realloc(*buf, LINE_MAX); + if (tmp == NULL) + return -1; + *buf = tmp; + *bufsize = LINE_MAX; + } + cp = *buf; + ep = cp + *bufsize; + + do { + if (cp + 1 >= ep) { + char *newbuf = reallocarray(*buf, *bufsize, 2); + if (newbuf == NULL) + goto bad; + *bufsize *= 2; + cp = newbuf + (cp - *buf); + ep = newbuf + *bufsize; + *buf = newbuf; + } + if ((ch = getc(fp)) == EOF) { + if (feof(fp)) + break; + goto bad; + } + *cp++ = ch; + } while (ch != delim); + + /* getdelim(3) should never return a length of 0. */ + if (cp != *buf) { + *cp = '\0'; + return (ssize_t)(cp - *buf); + } +bad: + /* Error, push back what was read if possible. */ + while (cp > *buf) { + if (ungetc(*cp--, fp) == EOF) + break; + } + return -1; +} +#endif /* HAVE_GETDELIM */ |