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Add new session type SCP_SESSION_TYPE_XVNC_UDS

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This PR adds a new session type, which is a VNC session using a
Unix Domain Socket connection rather than a TCP connection.

This is necessary for FIPS_based deployments using VNC, as the classic
VNC password algorithm is not supported by FIPS
This commit is contained in:
matt335672
2025-03-06 14:57:55 +00:00
parent e8a0699bb4
commit 6979df55ee
8 changed files with 106 additions and 15 deletions
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vnc/vnc.c
+25 -6
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@@ -1659,6 +1659,9 @@ lib_mod_connect(struct vnc *v)
int error;
int i;
int check_sec_result;
int socket_mode;
g_snprintf(con_port, sizeof(con_port), "%s", v->port);
v->server_msg(v, "VNC started connecting", 0);
check_sec_result = 1;
@@ -1678,17 +1681,26 @@ lib_mod_connect(struct vnc *v)
return 1;
}
if (g_strcmp(v->ip, "") == 0)
/* Assume a TCP-port based connection (i.e. not a UDS connection)
* if the port is not an absolute path */
if (con_port[0] == '/')
{
v->server_msg(v, "VNC error - no ip set", 0);
return 1;
socket_mode = TRANS_MODE_UNIX;
}
else
{
socket_mode = TRANS_MODE_TCP;
if (g_strcmp(v->ip, "") == 0)
{
v->server_msg(v, "VNC error - no IP set for TCP connection", 0);
return 1;
}
}
make_stream(s);
g_sprintf(con_port, "%s", v->port);
make_stream(pixel_format);
v->trans = trans_create(TRANS_MODE_TCP, 8 * 8192, 8192);
v->trans = trans_create(socket_mode, 8 * 8192, 8192);
if (v->trans == 0)
{
v->server_msg(v, "VNC error: trans_create() failed", 0);
@@ -1705,7 +1717,14 @@ lib_mod_connect(struct vnc *v)
g_sleep(v->delay_ms);
}
g_sprintf(text, "VNC connecting to %s %s", v->ip, con_port);
if (socket_mode == TRANS_MODE_TCP)
{
g_sprintf(text, "VNC connecting to TCP %s %s", v->ip, con_port);
}
else
{
g_sprintf(text, "VNC connecting to local socket %s", con_port);
}
v->server_msg(v, text, 0);
v->trans->si = v->si;