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Annotation of src/usr.bin/ssh/misc.c, Revision 1.1.2.4

1.1.2.4 ! jason       1: /*     $OpenBSD: misc.c,v 1.5 2001/04/12 20:09:37 stevesk Exp $        */
1.1       markus      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:
                     27: #include "includes.h"
1.1.2.4 ! jason      28: RCSID("$OpenBSD: misc.c,v 1.5 2001/04/12 20:09:37 stevesk Exp $");
1.1       markus     29:
                     30: #include "misc.h"
                     31: #include "log.h"
1.1.2.3   jason      32: #include "xmalloc.h"
1.1       markus     33:
                     34: char *
                     35: chop(char *s)
                     36: {
                     37:        char *t = s;
                     38:        while (*t) {
                     39:                if(*t == '\n' || *t == '\r') {
                     40:                        *t = '\0';
                     41:                        return s;
                     42:                }
                     43:                t++;
                     44:        }
                     45:        return s;
                     46:
                     47: }
                     48:
                     49: void
                     50: set_nonblock(int fd)
                     51: {
                     52:        int val;
                     53:        val = fcntl(fd, F_GETFL, 0);
                     54:        if (val < 0) {
                     55:                error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
                     56:                return;
                     57:        }
                     58:        if (val & O_NONBLOCK) {
                     59:                debug("fd %d IS O_NONBLOCK", fd);
                     60:                return;
                     61:        }
                     62:        debug("fd %d setting O_NONBLOCK", fd);
                     63:        val |= O_NONBLOCK;
                     64:        if (fcntl(fd, F_SETFL, val) == -1)
                     65:                if (errno != ENODEV)
                     66:                        error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
                     67:                            fd, strerror(errno));
                     68: }
                     69:
                     70: /* Characters considered whitespace in strsep calls. */
                     71: #define WHITESPACE " \t\r\n"
                     72:
                     73: char *
                     74: strdelim(char **s)
                     75: {
                     76:        char *old;
                     77:        int wspace = 0;
                     78:
                     79:        if (*s == NULL)
                     80:                return NULL;
                     81:
                     82:        old = *s;
                     83:
                     84:        *s = strpbrk(*s, WHITESPACE "=");
                     85:        if (*s == NULL)
                     86:                return (old);
                     87:
                     88:        /* Allow only one '=' to be skipped */
                     89:        if (*s[0] == '=')
                     90:                wspace = 1;
                     91:        *s[0] = '\0';
                     92:
                     93:        *s += strspn(*s + 1, WHITESPACE) + 1;
                     94:        if (*s[0] == '=' && !wspace)
                     95:                *s += strspn(*s + 1, WHITESPACE) + 1;
                     96:
                     97:        return (old);
1.1.2.3   jason      98: }
                     99:
                    100: struct passwd *
                    101: pwcopy(struct passwd *pw)
                    102: {
                    103:        struct passwd *copy = xmalloc(sizeof(*copy));
                    104:
                    105:        memset(copy, 0, sizeof(*copy));
                    106:        copy->pw_name = xstrdup(pw->pw_name);
                    107:        copy->pw_passwd = xstrdup(pw->pw_passwd);
                    108:        copy->pw_gecos = xstrdup(pw->pw_gecos);
                    109:        copy->pw_uid = pw->pw_uid;
                    110:        copy->pw_gid = pw->pw_gid;
                    111:        copy->pw_class = xstrdup(pw->pw_class);
                    112:        copy->pw_dir = xstrdup(pw->pw_dir);
                    113:        copy->pw_shell = xstrdup(pw->pw_shell);
                    114:        return copy;
1.1.2.4 ! jason     115: }
        !           116:
        !           117: int a2port(const char *s)
        !           118: {
        !           119:        long port;
        !           120:        char *endp;
        !           121:
        !           122:        errno = 0;
        !           123:        port = strtol(s, &endp, 0);
        !           124:        if (s == endp || *endp != '\0' ||
        !           125:            (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
        !           126:            port <= 0 || port > 65535)
        !           127:                return 0;
        !           128:
        !           129:        return port;
1.1       markus    130: }