diff mbox series

[v5,1/3] qemu-ga: Add 'Null' check and Redefine 'route'

Message ID 20241106084134.1133061-2-demeng@redhat.com (mailing list archive)
State New
Headers show
Series qemu-ga: Summarize and merge commits | expand

Commit Message

Dehan Meng Nov. 6, 2024, 8:41 a.m. UTC
sscanf return values are checked and add 'Null' check for
mandatory parameters. And merged redundant route and
networkroute variables.

Signed-off-by: Dehan Meng <demeng@redhat.com>
---
 qga/commands-linux.c | 86 +++++++++++++++++++++++---------------------
 1 file changed, 45 insertions(+), 41 deletions(-)

Comments

Daniel P. Berrangé Nov. 6, 2024, 1:35 p.m. UTC | #1
On Wed, Nov 06, 2024 at 04:41:32PM +0800, Dehan Meng wrote:
> sscanf return values are checked and add 'Null' check for
> mandatory parameters. And merged redundant route and
> networkroute variables.
> 
> Signed-off-by: Dehan Meng <demeng@redhat.com>
> ---
>  qga/commands-linux.c | 86 +++++++++++++++++++++++---------------------
>  1 file changed, 45 insertions(+), 41 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


With regards,
Daniel
Konstantin Kostiuk Nov. 6, 2024, 4:43 p.m. UTC | #2
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>

On Wed, Nov 6, 2024 at 3:35 PM Daniel P. Berrangé <berrange@redhat.com>
wrote:

> On Wed, Nov 06, 2024 at 04:41:32PM +0800, Dehan Meng wrote:
> > sscanf return values are checked and add 'Null' check for
> > mandatory parameters. And merged redundant route and
> > networkroute variables.
> >
> > Signed-off-by: Dehan Meng <demeng@redhat.com>
> > ---
> >  qga/commands-linux.c | 86 +++++++++++++++++++++++---------------------
> >  1 file changed, 45 insertions(+), 41 deletions(-)
>
> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
>
>
> With regards,
> Daniel
> --
> |: https://berrange.com      -o-
> https://www.flickr.com/photos/dberrange :|
> |: https://libvirt.org         -o-
> https://fstop138.berrange.com :|
> |: https://entangle-photo.org    -o-
> https://www.instagram.com/dberrange :|
>
>
Konstantin Kostiuk Nov. 6, 2024, 6:05 p.m. UTC | #3
Best Regards,
Konstantin Kostiuk.


On Wed, Nov 6, 2024 at 10:41 AM Dehan Meng <demeng@redhat.com> wrote:

> sscanf return values are checked and add 'Null' check for
> mandatory parameters. And merged redundant route and
> networkroute variables.
>
> Signed-off-by: Dehan Meng <demeng@redhat.com>
> ---
>  qga/commands-linux.c | 86 +++++++++++++++++++++++---------------------
>  1 file changed, 45 insertions(+), 41 deletions(-)
>
> diff --git a/qga/commands-linux.c b/qga/commands-linux.c
> index 51d5e3d927..495de74b31 100644
> --- a/qga/commands-linux.c
> +++ b/qga/commands-linux.c
> @@ -2103,7 +2103,9 @@ static char *hexToIPAddress(const void *hexValue,
> int is_ipv6)
>          int i;
>
>          for (i = 0; i < 16; i++) {
> -            sscanf(&hexStr[i * 2], "%02hhx", &in6.s6_addr[i]);
> +            if (sscanf(&hex_str[i * 2], "%02hhx", &in6.s6_addr[i]) != 1) {
> +                return NULL;
> +            }
>          }
>          inet_ntop(AF_INET6, &in6, addr, INET6_ADDRSTRLEN);
>
> @@ -2160,26 +2162,25 @@ GuestNetworkRouteList
> *qmp_guest_network_get_route(Error **errp)
>                      continue;
>                  }
>
> -                route = g_new0(GuestNetworkRoute, 1);
> -                networkroute = route;
> -                networkroute->iface = g_strdup(Iface);
> -                networkroute->destination = hexToIPAddress(Destination,
> 1);
> -                networkroute->metric = Metric;
> -                networkroute->source = hexToIPAddress(Source, 1);
> -                networkroute->desprefixlen = g_strdup_printf(
> -                    "%d", DesPrefixlen
> -                );
> -                networkroute->srcprefixlen = g_strdup_printf(
> -                    "%d", SrcPrefixlen
> -                );
> -                networkroute->nexthop = hexToIPAddress(NextHop, 1);
> -                networkroute->has_flags = true;
> -                networkroute->flags = Flags;
> -                networkroute->has_refcnt = true;
> -                networkroute->refcnt = RefCnt;
> -                networkroute->has_use = true;
> -                networkroute->use = Use;
> -                networkroute->version = 6;
> +                g_autoptr(GuestNetworkRoute) route =
> g_new0(GuestNetworkRoute, 1);
> +
> +                route->destination = hex_to_ip_address(destination, 1);
>

Compilation failed

../qga/commands-linux.c: In function ‘qmp_guest_network_get_route’:
../qga/commands-linux.c:2189:56: error: passing argument 1 of
‘hex_to_ip_address’ makes pointer from integer without a cast
[-Wint-conversion]
 2189 |                 route->destination = hex_to_ip_address(destination,
1);
      |                                                        ^~~~~~~~~~~
      |                                                        |
      |                                                        unsigned int
../qga/commands-linux.c:2096:44: note: expected ‘const void *’ but argument
is of type ‘unsigned int’
 2096 | static char *hex_to_ip_address(const void *hex_value, int is_ipv6)
      |                                ~~~~~~~~~~~~^~~~~~~~~

You use `destination` but the variable declaration was not updated from
`Destination`.
The same for DesPrefixlen/des_prefixlen, Flags/flags, etc.

Looks like you mixed changes from the next commit into this one.

+                route->iface = g_strdup(iface);
> +                if (route->destination == NULL) {
> +                    continue;
> +                }
> +                route->source = hex_to_ip_address(source, 1);
> +                route->nexthop = hex_to_ip_address(next_hop, 1);
> +                route->desprefixlen = g_strdup_printf("%d",
> des_prefixlen);
> +                route->srcprefixlen = g_strdup_printf("%d",
> src_prefixlen);
> +                route->metric = metric;
> +                route->has_flags = true;
> +                route->flags = flags;
> +                route->has_refcnt = true;
> +                route->refcnt = refcnt;
> +                route->has_use = true;
> +                route->use = use;
> +                route->version = 6;
>              } else {
>                  unsigned int Destination, Gateway, Mask, Flags;
>                  int RefCnt, Use, Metric, MTU, Window, IRTT;
> @@ -2191,26 +2192,29 @@ GuestNetworkRouteList
> *qmp_guest_network_get_route(Error **errp)
>                      continue;
>                  }
>
> -                route = g_new0(GuestNetworkRoute, 1);
> -                networkroute = route;
> -                networkroute->iface = g_strdup(Iface);
> -                networkroute->destination = hexToIPAddress(&Destination,
> 0);
> -                networkroute->gateway = hexToIPAddress(&Gateway, 0);
> -                networkroute->mask = hexToIPAddress(&Mask, 0);
> -                networkroute->metric = Metric;
> -                networkroute->has_flags = true;
> -                networkroute->flags = Flags;
> -                networkroute->has_refcnt = true;
> -                networkroute->refcnt = RefCnt;
> -                networkroute->has_use = true;
> -                networkroute->use = Use;
> -                networkroute->has_mtu = true;
> -                networkroute->mtu = MTU;
> -                networkroute->has_window = true;
> -                networkroute->window = Window;
> -                networkroute->has_irtt = true;
> -                networkroute->irtt = IRTT;
> -                networkroute->version = 4;
> +                g_autoptr(GuestNetworkRoute) route =
> g_new0(GuestNetworkRoute, 1);
> +
> +                route->destination = hex_to_ip_address(destination, 1);
> +                route->iface = g_strdup(iface);
> +                if (route->destination == NULL) {
> +                    continue;
> +                }
> +                route->gateway = hex_to_ip_address(&gateway, 0);
> +                route->mask = hex_to_ip_address(&mask, 0);
> +                route->metric = metric;
> +                route->has_flags = true;
> +                route->flags = flags;
> +                route->has_refcnt = true;
> +                route->refcnt = refcnt;
> +                route->has_use = true;
> +                route->use = use;
> +                route->has_mtu = true;
> +                route->mtu = mtu;
> +                route->has_window = true;
> +                route->window = window;
> +                route->has_irtt = true;
> +                route->irtt = irtt;
> +                route->version = 4;
>              }
>
>              QAPI_LIST_APPEND(tail, route);
> --
> 2.40.1
>
>
diff mbox series

Patch

diff --git a/qga/commands-linux.c b/qga/commands-linux.c
index 51d5e3d927..495de74b31 100644
--- a/qga/commands-linux.c
+++ b/qga/commands-linux.c
@@ -2103,7 +2103,9 @@  static char *hexToIPAddress(const void *hexValue, int is_ipv6)
         int i;
 
         for (i = 0; i < 16; i++) {
-            sscanf(&hexStr[i * 2], "%02hhx", &in6.s6_addr[i]);
+            if (sscanf(&hex_str[i * 2], "%02hhx", &in6.s6_addr[i]) != 1) {
+                return NULL;
+            }
         }
         inet_ntop(AF_INET6, &in6, addr, INET6_ADDRSTRLEN);
 
@@ -2160,26 +2162,25 @@  GuestNetworkRouteList *qmp_guest_network_get_route(Error **errp)
                     continue;
                 }
 
-                route = g_new0(GuestNetworkRoute, 1);
-                networkroute = route;
-                networkroute->iface = g_strdup(Iface);
-                networkroute->destination = hexToIPAddress(Destination, 1);
-                networkroute->metric = Metric;
-                networkroute->source = hexToIPAddress(Source, 1);
-                networkroute->desprefixlen = g_strdup_printf(
-                    "%d", DesPrefixlen
-                );
-                networkroute->srcprefixlen = g_strdup_printf(
-                    "%d", SrcPrefixlen
-                );
-                networkroute->nexthop = hexToIPAddress(NextHop, 1);
-                networkroute->has_flags = true;
-                networkroute->flags = Flags;
-                networkroute->has_refcnt = true;
-                networkroute->refcnt = RefCnt;
-                networkroute->has_use = true;
-                networkroute->use = Use;
-                networkroute->version = 6;
+                g_autoptr(GuestNetworkRoute) route = g_new0(GuestNetworkRoute, 1);
+
+                route->destination = hex_to_ip_address(destination, 1);
+                route->iface = g_strdup(iface);
+                if (route->destination == NULL) {
+                    continue;
+                }
+                route->source = hex_to_ip_address(source, 1);
+                route->nexthop = hex_to_ip_address(next_hop, 1);
+                route->desprefixlen = g_strdup_printf("%d", des_prefixlen);
+                route->srcprefixlen = g_strdup_printf("%d", src_prefixlen);
+                route->metric = metric;
+                route->has_flags = true;
+                route->flags = flags;
+                route->has_refcnt = true;
+                route->refcnt = refcnt;
+                route->has_use = true;
+                route->use = use;
+                route->version = 6;
             } else {
                 unsigned int Destination, Gateway, Mask, Flags;
                 int RefCnt, Use, Metric, MTU, Window, IRTT;
@@ -2191,26 +2192,29 @@  GuestNetworkRouteList *qmp_guest_network_get_route(Error **errp)
                     continue;
                 }
 
-                route = g_new0(GuestNetworkRoute, 1);
-                networkroute = route;
-                networkroute->iface = g_strdup(Iface);
-                networkroute->destination = hexToIPAddress(&Destination, 0);
-                networkroute->gateway = hexToIPAddress(&Gateway, 0);
-                networkroute->mask = hexToIPAddress(&Mask, 0);
-                networkroute->metric = Metric;
-                networkroute->has_flags = true;
-                networkroute->flags = Flags;
-                networkroute->has_refcnt = true;
-                networkroute->refcnt = RefCnt;
-                networkroute->has_use = true;
-                networkroute->use = Use;
-                networkroute->has_mtu = true;
-                networkroute->mtu = MTU;
-                networkroute->has_window = true;
-                networkroute->window = Window;
-                networkroute->has_irtt = true;
-                networkroute->irtt = IRTT;
-                networkroute->version = 4;
+                g_autoptr(GuestNetworkRoute) route = g_new0(GuestNetworkRoute, 1);
+
+                route->destination = hex_to_ip_address(destination, 1);
+                route->iface = g_strdup(iface);
+                if (route->destination == NULL) {
+                    continue;
+                }
+                route->gateway = hex_to_ip_address(&gateway, 0);
+                route->mask = hex_to_ip_address(&mask, 0);
+                route->metric = metric;
+                route->has_flags = true;
+                route->flags = flags;
+                route->has_refcnt = true;
+                route->refcnt = refcnt;
+                route->has_use = true;
+                route->use = use;
+                route->has_mtu = true;
+                route->mtu = mtu;
+                route->has_window = true;
+                route->window = window;
+                route->has_irtt = true;
+                route->irtt = irtt;
+                route->version = 4;
             }
 
             QAPI_LIST_APPEND(tail, route);