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vnc: bugfixes and cleanups. 

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Merge remote-tracking branch 'remotes/kraxel/tags/pull-vnc-20150312-1' into staging

vnc: bugfixes and cleanups.

# gpg: Signature made Thu Mar 12 08:58:39 2015 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-vnc-20150312-1:
  vnc: fix segmentation fault when invalid vnc parameters are specified
  vnc: avoid possible file handler leak
  ui/console: fix OVERFLOW_BEFORE_WIDEN
  ui: fix regression in x509verify parameter for VNC server
  vnc: switch to inet_listen_opts
  vnc: remove dead code
  vnc: drop display+ws_display from VncDisplay

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2015-03-12 10:35:53 +00:00
parent a195fdd028 81607cbfa4
commit 2a5b58e240
4 changed files with 72 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
ui/console.c
View File

@ -1285,9 +1285,9 @@ DisplaySurface *qemu_create_displaysurface_guestmem(int width, int height,
linesize = width * PIXMAN_FORMAT_BPP(format) / 8;
}
size = linesize * height;
size = (hwaddr)linesize * height;
data = cpu_physical_memory_map(addr, &size, 0);
if (size != linesize * height) {
if (size != (hwaddr)linesize * height) {
cpu_physical_memory_unmap(data, size, 0, 0);
return NULL;
}

2
ui/vnc-auth-sasl.c
View File

@ -555,7 +555,7 @@ void start_auth_sasl(VncState *vs)
memset (&secprops, 0, sizeof secprops);
/* Inform SASL that we've got an external SSF layer from TLS */
if (strncmp(vs->vd->display, "unix:", 5) == 0
if (vs->vd->is_unix
#ifdef CONFIG_VNC_TLS
/* Disable SSF, if using TLS+x509+SASL only. TLS without x509
is not sufficiently strong */

128
ui/vnc.c
View File

@ -407,7 +407,7 @@ VncInfo *qmp_query_vnc(Error **errp)
VncInfo *info = g_malloc0(sizeof(*info));
VncDisplay *vd = vnc_display_find(NULL);
if (vd == NULL || vd->display == NULL) {
if (vd == NULL || !vd->enabled) {
info->enabled = false;
} else {
struct sockaddr_storage sa;
@ -3190,16 +3190,15 @@ static void vnc_display_close(VncDisplay *vs)
{
if (!vs)
return;
g_free(vs->display);
vs->display = NULL;
vs->enabled = false;
vs->is_unix = false;
if (vs->lsock != -1) {
qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
close(vs->lsock);
vs->lsock = -1;
}
#ifdef CONFIG_VNC_WS
g_free(vs->ws_display);
vs->ws_display = NULL;
vs->ws_enabled = false;
if (vs->lwebsock != -1) {
qemu_set_fd_handler2(vs->lwebsock, NULL, NULL, NULL, NULL);
close(vs->lwebsock);
@ -3304,7 +3303,7 @@ static QemuOptsList qemu_vnc_opts = {
.type = QEMU_OPT_BOOL,
},{
.name = "x509verify",
.type = QEMU_OPT_BOOL,
.type = QEMU_OPT_STRING,
},{
.name = "acl",
.type = QEMU_OPT_BOOL,
@ -3323,13 +3322,14 @@ void vnc_display_open(const char *id, Error **errp)
{
VncDisplay *vs = vnc_display_find(id);
QemuOpts *opts = qemu_opts_find(&qemu_vnc_opts, id);
QemuOpts *sopts, *wsopts;
const char *share, *device_id;
QemuConsole *con;
bool password = false;
bool reverse = false;
const char *vnc;
const char *has_to;
char *display, *to = NULL;
char *h;
bool has_ipv4 = false;
bool has_ipv6 = false;
#ifdef CONFIG_VNC_WS
@ -3362,17 +3362,36 @@ void vnc_display_open(const char *id, Error **errp)
return;
}
has_to = qemu_opt_get(opts, "to");
if (has_to) {
to = g_strdup_printf(",to=%s", has_to);
sopts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort);
wsopts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort);
h = strrchr(vnc, ':');
if (h) {
char *host = g_strndup(vnc, h - vnc);
qemu_opt_set(sopts, "host", host, &error_abort);
qemu_opt_set(wsopts, "host", host, &error_abort);
qemu_opt_set(sopts, "port", h+1, &error_abort);
g_free(host);
} else {
error_setg(errp, "no vnc port specified");
goto fail;
}
has_to = qemu_opt_get(opts, "to");
has_ipv4 = qemu_opt_get_bool(opts, "ipv4", false);
has_ipv6 = qemu_opt_get_bool(opts, "ipv6", false);
display = g_strdup_printf("%s%s%s%s", vnc,
has_to ? to : "",
has_ipv4 ? ",ipv4" : "",
has_ipv6 ? ",ipv6" : "");
vs->display = g_strdup(display);
if (has_to) {
qemu_opt_set(sopts, "to", has_to, &error_abort);
qemu_opt_set(wsopts, "to", has_to, &error_abort);
}
if (has_ipv4) {
qemu_opt_set(sopts, "ipv4", "on", &error_abort);
qemu_opt_set(wsopts, "ipv4", "on", &error_abort);
}
if (has_ipv6) {
qemu_opt_set(sopts, "ipv6", "on", &error_abort);
qemu_opt_set(wsopts, "ipv6", "on", &error_abort);
}
password = qemu_opt_get_bool(opts, "password", false);
if (password && fips_get_state()) {
@ -3391,9 +3410,14 @@ void vnc_display_open(const char *id, Error **errp)
#ifdef CONFIG_VNC_TLS
tls = qemu_opt_get_bool(opts, "tls", false);
path = qemu_opt_get(opts, "x509");
if (!path) {
path = qemu_opt_get(opts, "x509verify");
if (path) {
vs->tls.x509verify = true;
}
}
if (path) {
x509 = true;
vs->tls.x509verify = qemu_opt_get_bool(opts, "x509verify", false);
if (vnc_tls_set_x509_creds_dir(vs, path) < 0) {
error_setg(errp, "Failed to find x509 certificates/keys in %s",
path);
@ -3425,19 +3449,9 @@ void vnc_display_open(const char *id, Error **errp)
#ifdef CONFIG_VNC_WS
websocket = qemu_opt_get(opts, "websocket");
if (websocket) {
/* extract the host specification from display */
char *host = NULL, *host_end = NULL;
vs->websocket = 1;
vs->ws_enabled = true;
qemu_opt_set(wsopts, "port", websocket, &error_abort);
/* ipv6 hosts have colons */
host_end = strrchr(display, ':');
if (host_end) {
host = g_strndup(display, host_end - display + 1);
} else {
host = g_strdup(":");
}
vs->ws_display = g_strconcat(host, websocket, NULL);
g_free(host);
}
#endif /* CONFIG_VNC_WS */
@ -3607,10 +3621,10 @@ void vnc_display_open(const char *id, Error **errp)
#ifdef CONFIG_VNC_WS
vs->lwebsock = -1;
#endif
if (strncmp(display, "unix:", 5) == 0) {
csock = unix_connect(display+5, errp);
if (strncmp(vnc, "unix:", 5) == 0) {
csock = unix_connect(vnc+5, errp);
} else {
csock = inet_connect(display, errp);
csock = inet_connect(vnc, errp);
}
if (csock < 0) {
goto fail;
@ -3618,62 +3632,47 @@ void vnc_display_open(const char *id, Error **errp)
vnc_connect(vs, csock, false, false);
} else {
/* listen for connects */
char *dpy;
dpy = g_malloc(256);
if (strncmp(display, "unix:", 5) == 0) {
pstrcpy(dpy, 256, "unix:");
vs->lsock = unix_listen(display+5, dpy+5, 256-5, errp);
if (strncmp(vnc, "unix:", 5) == 0) {
vs->lsock = unix_listen(vnc+5, NULL, 0, errp);
vs->is_unix = true;
} else {
vs->lsock = inet_listen(display, dpy, 256,
SOCK_STREAM, 5900, errp);
vs->lsock = inet_listen_opts(sopts, 5900, errp);
if (vs->lsock < 0) {
g_free(dpy);
goto fail;
}
#ifdef CONFIG_VNC_WS
if (vs->websocket) {
if (vs->ws_display) {
vs->lwebsock = inet_listen(vs->ws_display, NULL, 256,
SOCK_STREAM, 0, errp);
} else {
vs->lwebsock = inet_listen(vs->display, NULL, 256,
SOCK_STREAM, 5700, errp);
}
if (vs->ws_enabled) {
vs->lwebsock = inet_listen_opts(wsopts, 0, errp);
if (vs->lwebsock < 0) {
if (vs->lsock) {
if (vs->lsock != -1) {
close(vs->lsock);
vs->lsock = -1;
}
g_free(dpy);
goto fail;
}
}
#endif /* CONFIG_VNC_WS */
}
g_free(to);
g_free(display);
g_free(vs->display);
vs->display = dpy;
vs->enabled = true;
qemu_set_fd_handler2(vs->lsock, NULL,
vnc_listen_regular_read, NULL, vs);
#ifdef CONFIG_VNC_WS
if (vs->websocket) {
if (vs->ws_enabled) {
qemu_set_fd_handler2(vs->lwebsock, NULL,
vnc_listen_websocket_read, NULL, vs);
}
#endif /* CONFIG_VNC_WS */
}
qemu_opts_del(sopts);
qemu_opts_del(wsopts);
return;
fail:
g_free(to);
g_free(display);
g_free(vs->display);
vs->display = NULL;
qemu_opts_del(sopts);
qemu_opts_del(wsopts);
vs->enabled = false;
#ifdef CONFIG_VNC_WS
g_free(vs->ws_display);
vs->ws_display = NULL;
vs->ws_enabled = false;
#endif /* CONFIG_VNC_WS */
}
@ -3704,8 +3703,13 @@ QemuOpts *vnc_parse_func(const char *str)
{
QemuOptsList *olist = qemu_find_opts("vnc");
QemuOpts *opts = qemu_opts_parse(olist, str, 1);
const char *id = qemu_opts_id(opts);
const char *id;
if (!opts) {
return NULL;
}
id = qemu_opts_id(opts);
if (!id) {
/* auto-assign id if not present */
vnc_auto_assign_id(olist, opts);

6
ui/vnc.h
View File

@ -158,8 +158,7 @@ struct VncDisplay
int lsock;
#ifdef CONFIG_VNC_WS
int lwebsock;
bool websocket;
char *ws_display;
bool ws_enabled;
#endif
DisplaySurface *ds;
DisplayChangeListener dcl;
@ -176,7 +175,8 @@ struct VncDisplay
const char *id;
QTAILQ_ENTRY(VncDisplay) next;
char *display;
bool enabled;
bool is_unix;
char *password;
time_t expires;
int auth;