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Annotation of src/usr.bin/ssh/compat.c, Revision 1.11

1.5       markus      1: /*
                      2:  * Copyright (c) 1999 Markus Friedl.  All rights reserved.
                      3:  *
                      4:  * Redistribution and use in source and binary forms, with or without
                      5:  * modification, are permitted provided that the following conditions
                      6:  * are met:
                      7:  * 1. Redistributions of source code must retain the above copyright
                      8:  *    notice, this list of conditions and the following disclaimer.
                      9:  * 2. Redistributions in binary form must reproduce the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer in the
                     11:  *    documentation and/or other materials provided with the distribution.
                     12:  * 3. All advertising materials mentioning features or use of this software
                     13:  *    must display the following acknowledgement:
                     14:  *      This product includes software developed by Markus Friedl.
                     15:  * 4. The name of the author may not be used to endorse or promote products
                     16:  *    derived from this software without specific prior written permission.
                     17:  *
                     18:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     19:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     20:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     21:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     22:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     23:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     24:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     25:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     26:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     27:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     28:  */
                     29:
1.1       markus     30: #include "includes.h"
1.11    ! markus     31: RCSID("$Id: compat.c,v 1.10 2000/04/12 07:45:43 markus Exp $");
1.2       markus     32:
1.1       markus     33: #include "ssh.h"
1.6       markus     34: #include "packet.h"
1.10      markus     35: #include "xmalloc.h"
                     36: #include "compat.h"
1.1       markus     37:
1.4       markus     38: int compat13 = 0;
1.6       markus     39: int compat20 = 0;
                     40: int datafellows = 0;
1.4       markus     41:
1.11    ! markus     42: void
1.6       markus     43: enable_compat20(void)
                     44: {
1.7       markus     45:        verbose("Enabling compatibility mode for protocol 2.0");
                     46:        compat20 = 1;
                     47:        packet_set_ssh2_format();
1.6       markus     48: }
1.11    ! markus     49: void
1.4       markus     50: enable_compat13(void)
                     51: {
1.3       markus     52:        verbose("Enabling compatibility mode for protocol 1.3");
1.4       markus     53:        compat13 = 1;
1.6       markus     54: }
                     55: /* datafellows bug compatibility */
                     56: void
                     57: compat_datafellows(const char *version)
                     58: {
                     59:        int i;
                     60:        size_t len;
                     61:        static const char *check[] = {
                     62:                "2.0.1",
1.8       markus     63:                "2.1.0",
1.6       markus     64:                NULL
                     65:        };
                     66:        for (i = 0; check[i]; i++) {
                     67:                len = strlen(check[i]);
                     68:                if (strlen(version) >= len &&
                     69:                   (strncmp(version, check[i], len) == 0)) {
1.9       markus     70:                        verbose("datafellows: %.200s", version);
1.6       markus     71:                        datafellows = 1;
                     72:                        return;
                     73:                }
                     74:        }
1.10      markus     75: }
                     76:
                     77: #define        SEP     ","
                     78: int
                     79: proto_spec(const char *spec)
                     80: {
                     81:        char *s = xstrdup(spec);
                     82:        char *p;
                     83:        int ret = SSH_PROTO_UNKNOWN;
                     84:
                     85:        for ((p = strtok(s, SEP)); p; (p = strtok(NULL, SEP))) {
                     86:                switch(atoi(p)) {
                     87:                case 1:
                     88:                        if (ret == SSH_PROTO_UNKNOWN)
                     89:                                ret |= SSH_PROTO_1_PREFERRED;
                     90:                        ret |= SSH_PROTO_1;
                     91:                        break;
                     92:                case 2:
                     93:                        ret |= SSH_PROTO_2;
                     94:                        break;
                     95:                default:
                     96:                        log("ignoring bad proto spec: '%s'.", p);
                     97:                        break;
                     98:                }
                     99:        }
                    100:        xfree(s);
                    101:        return ret;
1.1       markus    102: }