- andreas@cvs.openbsd.org 2009/10/24 11:22:37

     [roaming_common.c]
     Do the actual suspend/resume in the client. This won't be useful until
     the server side supports roaming.
     Most code from Martin Forssen, maf at appgate dot com. Some changes by
     me and markus@
     ok markus@

2 files changed, 53 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 3ee863580..d45a896bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -18,6 +18,13 @@
      [ssh2.h]
      Define the KEX messages used when resuming a suspended connection.
      ok markus@
+   - andreas@cvs.openbsd.org 2009/10/24 11:22:37
+     [roaming_common.c]
+     Do the actual suspend/resume in the client. This won't be useful until
+     the server side supports roaming.
+     Most code from Martin Forssen, maf at appgate dot com. Some changes by
+     me and markus@
+     ok markus@
 
 20091226
  - (tim) [contrib/cygwin/Makefile] Install ssh-copy-id and ssh-copy-id.1
diff --git a/roaming_common.c b/roaming_common.c
index 73db09d79..272deade3 100644
--- a/roaming_common.c
+++ b/roaming_common.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: roaming_common.c,v 1.5 2009/06/27 09:32:43 andreas Exp $ */
+/* $OpenBSD: roaming_common.c,v 1.6 2009/10/24 11:22:37 andreas Exp $ */
 /*
  * Copyright (c) 2004-2009 AppGate Network Security AB
  *
@@ -147,6 +147,16 @@ roaming_write(int fd, const void *buf, size_t count, int *cont)
         }
         debug3("Wrote %ld bytes for a total of %llu", (long)ret,
             (unsigned long long)write_bytes);
+        if (out_buf_size > 0 &&
+            (ret == 0 || (ret == -1 && errno == EPIPE))) {
+                if (wait_for_roaming_reconnect() != 0) {
+                        ret = 0;
+                        *cont = 1;
+                } else {
+                        ret = -1;
+                        errno = EAGAIN;
+                }
+        }
         return ret;
 }
 
@@ -158,6 +168,15 @@ roaming_read(int fd, void *buf, size_t count, int *cont)
                 if (!resume_in_progress) {
                         read_bytes += ret;
                 }
+        } else if (out_buf_size > 0 &&
+            (ret == 0 || (ret == -1 && (errno == ECONNRESET
+            || errno == ECONNABORTED || errno == ETIMEDOUT
+            || errno == EHOSTUNREACH)))) {
+                debug("roaming_read failed for %d  ret=%ld  errno=%d",
+                    fd, (long)ret, errno);
+                ret = 0;
+                if (wait_for_roaming_reconnect() == 0)
+                        *cont = 1;
         }
         return ret;
 }
@@ -199,3 +218,29 @@ resend_bytes(int fd, u_int64_t *offset)
                 atomicio(vwrite, fd, out_buf + (out_last - needed), needed);
         }
 }
+
+/*
+ * Caclulate a new key after a reconnect
+ */
+void
+calculate_new_key(u_int64_t *key, u_int64_t cookie, u_int64_t challenge)
+{
+        const EVP_MD *md = EVP_sha1();
+        EVP_MD_CTX ctx;
+        char hash[EVP_MAX_MD_SIZE];
+        Buffer b;
+
+        buffer_init(&b);
+        buffer_put_int64(&b, *key);
+        buffer_put_int64(&b, cookie);
+        buffer_put_int64(&b, challenge);
+
+        EVP_DigestInit(&ctx, md);
+        EVP_DigestUpdate(&ctx, buffer_ptr(&b), buffer_len(&b));
+        EVP_DigestFinal(&ctx, hash, NULL);
+
+        buffer_clear(&b);
+        buffer_append(&b, hash, EVP_MD_size(md));
+        *key = buffer_get_int64(&b);
+        buffer_free(&b);
+}