src/usr.bin/ssh/authfd.c - diff

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-version 1.127, 2021/01/26 00:46:17
+version 1.128, 2021/12/19 22:08:48
 Line 649
 Line 649
 Line 649
          sshbuf_free(msg);
          return r;
  }
+ /* Binds a session ID to a hostkey via the initial KEX signature. */
+ int
+ ssh_agent_bind_hostkey(int sock, const struct sshkey *key,
+     const struct sshbuf *session_id, const struct sshbuf *signature,
+     int forwarding)
+ {
+         struct sshbuf *msg;
+         int r;
+         if (key == NULL || session_id == NULL || signature == NULL)
+                 return SSH_ERR_INVALID_ARGUMENT;
+         if ((msg = sshbuf_new()) == NULL)
+                 return SSH_ERR_ALLOC_FAIL;
+         if ((r = sshbuf_put_u8(msg, SSH_AGENTC_EXTENSION)) != 0 ||
+             (r = sshbuf_put_cstring(msg, "session-bind@openssh.com")) != 0 ||
+             (r = sshkey_puts(key, msg)) != 0 ||
+             (r = sshbuf_put_stringb(msg, session_id)) != 0 ||
+             (r = sshbuf_put_stringb(msg, signature)) != 0 ||
+             (r = sshbuf_put_u8(msg, forwarding ? 1 : 0)) != 0)
+                 goto out;
+         if ((r = ssh_request_reply_decode(sock, msg)) != 0)
+                 goto out;
+         /* success */
+         r = 0;
+  out:
+         sshbuf_free(msg);
+         return r;
+ }