- Moved all the bsd-* and fake-* stuff into new libopenbsd-compat.a

[openssh.git] / compat.c

diff --git a/compat.c b/compat.c
index 669acf51651377d55dd0c7a1c80e61cd168c84d6..0862de2072be24eadf0cc8b72655524e7631630f 100644 (file)
--- a/compat.c
+++ b/compat.c
@@ -1,13 +1,104 @@
+/*
+ * Copyright (c) 1999 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Markus Friedl.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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("$Id$");
 
 #include "ssh.h"
+#include "packet.h"
+#include "xmalloc.h"
+#include "compat.h"
 
 int compat13 = 0;
+int compat20 = 0;
+int datafellows = 0;
 
-void 
+void
+enable_compat20(void)
+{
+       verbose("Enabling compatibility mode for protocol 2.0");
+       compat20 = 1;
+}
+void
 enable_compat13(void)
 {
        verbose("Enabling compatibility mode for protocol 1.3");
        compat13 = 1;
 }
+/* datafellows bug compatibility */
+void
+compat_datafellows(const char *version)
+{
+       int i;
+       size_t len;
+       struct {
+               char    *version;
+               int     bugs;
+       } check[] = {
+               {"2.1.0",       SSH_BUG_SIGBLOB|SSH_BUG_HMAC},
+               {"2.0.1",       SSH_BUG_SIGBLOB|SSH_BUG_HMAC|SSH_BUG_PUBKEYAUTH|SSH_BUG_X11FWD},
+               {NULL,          0}
+       };
+       for (i = 0; check[i].version; i++) {
+               len = strlen(check[i].version);
+               if (strlen(version) >= len &&
+                  (strncmp(version, check[i].version, len) == 0)) {
+                       verbose("datafellows: %.200s", version);
+                       datafellows = check[i].bugs;
+                       return;
+               }
+       }
+}
+
+#define        SEP     ","
+int
+proto_spec(const char *spec)
+{
+       char *s = xstrdup(spec);
+       char *p;
+       int ret = SSH_PROTO_UNKNOWN;
+
+       for ((p = strtok(s, SEP)); p; (p = strtok(NULL, SEP))) {
+               switch(atoi(p)) {
+               case 1:
+                       if (ret == SSH_PROTO_UNKNOWN)
+                               ret |= SSH_PROTO_1_PREFERRED;
+                       ret |= SSH_PROTO_1;
+                       break;
+               case 2:
+                       ret |= SSH_PROTO_2;
+                       break;
+               default:
+                       log("ignoring bad proto spec: '%s'.", p);
+                       break;
+               }
+       }
+       xfree(s);
+       return ret;
+}