xref: /openbmc/qemu/ui/vnc-auth-sasl.h (revision 9516034d)
1 /*
2  * QEMU VNC display driver: SASL auth protocol
3  *
4  * Copyright (C) 2009 Red Hat, Inc
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to deal
8  * in the Software without restriction, including without limitation the rights
9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 
25 #ifndef QEMU_VNC_AUTH_SASL_H
26 #define QEMU_VNC_AUTH_SASL_H
27 
28 #include <sasl/sasl.h>
29 
30 typedef struct VncStateSASL VncStateSASL;
31 typedef struct VncDisplaySASL VncDisplaySASL;
32 
33 #include "authz/base.h"
34 
35 struct VncStateSASL {
36     sasl_conn_t *conn;
37     /* If we want to negotiate an SSF layer with client */
38     bool wantSSF;
39     /* If we are now running the SSF layer */
40     bool runSSF;
41     /*
42      * If this is non-zero, then wait for that many bytes
43      * to be written plain, before switching to SSF encoding
44      * This allows the VNC auth result to finish being
45      * written in plain.
46      */
47     unsigned int waitWriteSSF;
48 
49     /*
50      * Buffering encoded data to allow more clear data
51      * to be stuffed onto the output buffer
52      */
53     const uint8_t *encoded;
54     unsigned int encodedLength;
55     unsigned int encodedRawLength;
56     unsigned int encodedOffset;
57     char *username;
58     char *mechlist;
59 };
60 
61 struct VncDisplaySASL {
62     QAuthZ *authz;
63     char *authzid;
64 };
65 
66 bool vnc_sasl_server_init(Error **errp);
67 void vnc_sasl_client_cleanup(VncState *vs);
68 
69 size_t vnc_client_read_sasl(VncState *vs);
70 size_t vnc_client_write_sasl(VncState *vs);
71 
72 void start_auth_sasl(VncState *vs);
73 
74 #endif /* QEMU_VNC_AUTH_SASL_H */
75