[openssh.git] / util.c

/*	$OpenBSD: util.c,v 1.5 2000/09/07 20:27:55 deraadt Exp $	*/

/*
 * Copyright (c) 2000 Markus Friedl.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "includes.h"
RCSID("$OpenBSD: util.c,v 1.5 2000/09/07 20:27:55 deraadt Exp $");

#include "ssh.h"

char *
chop(char *s)
{
	char *t = s;
	while (*t) {
		if(*t == '\n' || *t == '\r') {
			*t = '\0';
			return s;
		}
		t++;
	}
	return s;

}

void
set_nonblock(int fd)
{
	int val;
	if (isatty(fd)) {
		/* do not mess with tty's */
		debug("no set_nonblock for tty fd %d", fd);
		return;
	}
	val = fcntl(fd, F_GETFL, 0);
	if (val < 0) {
		error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
		return;
	}
	if (val & O_NONBLOCK)
		return;
	debug("fd %d setting O_NONBLOCK", fd);
	val |= O_NONBLOCK;
	if (fcntl(fd, F_SETFL, val) == -1)
		if (errno != ENODEV)
			error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
			    fd, strerror(errno));
}

/* Characters considered whitespace in strsep calls. */
#define WHITESPACE " \t\r\n"

char *
strdelim(char **s)
{
	char *old;
	int wspace = 0;

	if (*s == NULL)
		return NULL;

	old = *s;

	*s = strpbrk(*s, WHITESPACE "=");
	if (*s == NULL)
		return (old);

	/* Allow only one '=' to be skipped */
	if (*s[0] == '=')
		wspace = 1;
	*s[0] = '\0';

	*s += strspn(*s + 1, WHITESPACE) + 1;
	if (*s[0] == '=' && !wspace)
		*s += strspn(*s + 1, WHITESPACE) + 1;

	return (old);
}
Commit	Line	Data
bcbf86ec	1	/* $OpenBSD: util.c,v 1.5 2000/09/07 20:27:55 deraadt Exp $ */
	2
	3	/*
	4	* Copyright (c) 2000 Markus Friedl. All rights reserved.
	5	*
	6	* Redistribution and use in source and binary forms, with or without
	7	* modification, are permitted provided that the following conditions
	8	* are met:
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions and the following disclaimer.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	*
	15	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	16	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	17	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	18	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	19	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	20	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	21	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	22	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	23	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	24	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	25	*/
	26
6d24277f	27	#include "includes.h"
bcbf86ec	28	RCSID("$OpenBSD: util.c,v 1.5 2000/09/07 20:27:55 deraadt Exp $");
6d24277f	29
	30	#include "ssh.h"
	31
	32	char *
	33	chop(char *s)
	34	{
	35	char *t = s;
	36	while (*t) {
	37	if(t == '\n' \|\| t == '\r') {
	38	*t = '\0';
	39	return s;
	40	}
	41	t++;
	42	}
	43	return s;
	44
	45	}
	46
	47	void
	48	set_nonblock(int fd)
	49	{
	50	int val;
	51	if (isatty(fd)) {
	52	/* do not mess with tty's */
	53	debug("no set_nonblock for tty fd %d", fd);
	54	return;
	55	}
	56	val = fcntl(fd, F_GETFL, 0);
	57	if (val < 0) {
	58	error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
	59	return;
	60	}
	61	if (val & O_NONBLOCK)
	62	return;
	63	debug("fd %d setting O_NONBLOCK", fd);
	64	val \|= O_NONBLOCK;
	65	if (fcntl(fd, F_SETFL, val) == -1)
14a9a859	66	if (errno != ENODEV)
	67	error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
	68	fd, strerror(errno));
6d24277f	69	}
	70
	71	/* Characters considered whitespace in strsep calls. */
	72	#define WHITESPACE " \t\r\n"
	73
	74	char *
	75	strdelim(char **s)
	76	{
	77	char *old;
	78	int wspace = 0;
	79
	80	if (*s == NULL)
	81	return NULL;
	82
	83	old = *s;
	84
	85	s = strpbrk(s, WHITESPACE "=");
	86	if (*s == NULL)
	87	return (old);
	88
	89	/* Allow only one '=' to be skipped */
	90	if (*s[0] == '=')
	91	wspace = 1;
	92	*s[0] = '\0';
	93
	94	s += strspn(s + 1, WHITESPACE) + 1;
	95	if (*s[0] == '=' && !wspace)
	96	s += strspn(s + 1, WHITESPACE) + 1;
	97
	98	return (old);
	99	}