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Annotation of src/usr.bin/ssh/util.c, Revision 1.5

1.5     ! deraadt     1: /*     $OpenBSD$       */
        !             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:
1.1       provos     27: #include "includes.h"
1.5     ! deraadt    28: RCSID("$OpenBSD: util.c,v 1.4 2000/08/28 20:23:37 markus Exp $");
1.1       provos     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)
1.4       markus     66:                if (errno != ENODEV)
                     67:                        error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
                     68:                            fd, strerror(errno));
1.1       provos     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: }