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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1730974926; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7fSJvxsikWEVlSLTMUF4hTpiUDgpuukmhQKCTHqmb3A=; b=FmumR6aUc711sh2TnBJHIYr1Y5iMQdKtmkQRaJM5PpT6DADU8v9ZBxt32RZMxTjzIBESbg B1BQ0JQNOMYHdUDczjO3otNQ3atUUTUzHjV0YHFoJybTl+EEcNGuwCxB3L4zNDxScT1vlM Q5A6CJeWVcgeqFVkgRj839d9bZQpUDE= X-MC-Unique: aU4ddEyLNj6cm-HccNGrfA-1 X-Mimecast-MFC-AGG-ID: aU4ddEyLNj6cm-HccNGrfA From: Konstantin Kostiuk To: qemu-devel@nongnu.org, Konstantin Kostiuk Subject: [PATCH v6 1/3] qemu-ga: Add 'Null' check and Redefine 'route' Date: Thu, 7 Nov 2024 12:21:53 +0200 Message-ID: <20241107102155.57573-2-kkostiuk@redhat.com> In-Reply-To: <20241107102155.57573-1-kkostiuk@redhat.com> References: <20241107102155.57573-1-kkostiuk@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=kkostiuk@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.34, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1730975001305116600 sscanf return values are checked and add 'Null' check for mandatory parameters. And merged redundant route and networkroute variables. Signed-off-by: Dehan Meng Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Konstantin Kostiuk Signed-off-by: Konstantin Kostiuk --- qga/commands-linux.c | 83 +++++++++++++++++++++++--------------------- 1 file changed, 44 insertions(+), 39 deletions(-) diff --git a/qga/commands-linux.c b/qga/commands-linux.c index 9b1746b24f..eaf53e1c17 100644 --- a/qga/commands-linux.c +++ b/qga/commands-linux.c @@ -2102,7 +2102,9 @@ static char *hexToIPAddress(const void *hexValue, int= is_ipv6) int i; for (i =3D 0; i < 16; i++) { - sscanf(&hexStr[i * 2], "%02hhx", &in6.s6_addr[i]); + if (sscanf(&hex_str[i * 2], "%02hhx", &in6.s6_addr[i]) !=3D 1)= { + return NULL; + } } inet_ntop(AF_INET6, &in6, addr, INET6_ADDRSTRLEN); @@ -2144,9 +2146,9 @@ GuestNetworkRouteList *qmp_guest_network_get_route(Er= ror **errp) firstLine =3D 0; continue; } - GuestNetworkRoute *route =3D NULL; - GuestNetworkRoute *networkroute; char Iface[IFNAMSIZ]; + g_autoptr(GuestNetworkRoute) route =3D g_new0(GuestNetworkRout= e, 1); + if (is_ipv6) { char Destination[33], Source[33], NextHop[33]; int DesPrefixlen, SrcPrefixlen, Metric, RefCnt, Use, Flags; @@ -2159,26 +2161,27 @@ GuestNetworkRouteList *qmp_guest_network_get_route(= Error **errp) continue; } - route =3D g_new0(GuestNetworkRoute, 1); - networkroute =3D route; - networkroute->iface =3D g_strdup(Iface); - networkroute->destination =3D hexToIPAddress(Destination, = 1); - networkroute->metric =3D Metric; - networkroute->source =3D hexToIPAddress(Source, 1); - networkroute->desprefixlen =3D g_strdup_printf( + route->iface =3D g_strdup(Iface); + route->destination =3D hexToIPAddress(Destination, 1); + if (route->destination =3D=3D NULL) { + continue; + } + route->metric =3D Metric; + route->source =3D hexToIPAddress(Source, 1); + route->desprefixlen =3D g_strdup_printf( "%d", DesPrefixlen ); - networkroute->srcprefixlen =3D g_strdup_printf( + route->srcprefixlen =3D g_strdup_printf( "%d", SrcPrefixlen ); - networkroute->nexthop =3D hexToIPAddress(NextHop, 1); - networkroute->has_flags =3D true; - networkroute->flags =3D Flags; - networkroute->has_refcnt =3D true; - networkroute->refcnt =3D RefCnt; - networkroute->has_use =3D true; - networkroute->use =3D Use; - networkroute->version =3D 6; + route->nexthop =3D hexToIPAddress(NextHop, 1); + route->has_flags =3D true; + route->flags =3D Flags; + route->has_refcnt =3D true; + route->refcnt =3D RefCnt; + route->has_use =3D true; + route->use =3D Use; + route->version =3D 6; } else { unsigned int Destination, Gateway, Mask, Flags; int RefCnt, Use, Metric, MTU, Window, IRTT; @@ -2190,29 +2193,31 @@ GuestNetworkRouteList *qmp_guest_network_get_route(= Error **errp) continue; } - route =3D g_new0(GuestNetworkRoute, 1); - networkroute =3D route; - networkroute->iface =3D g_strdup(Iface); - networkroute->destination =3D hexToIPAddress(&Destination,= 0); - networkroute->gateway =3D hexToIPAddress(&Gateway, 0); - networkroute->mask =3D hexToIPAddress(&Mask, 0); - networkroute->metric =3D Metric; - networkroute->has_flags =3D true; - networkroute->flags =3D Flags; - networkroute->has_refcnt =3D true; - networkroute->refcnt =3D RefCnt; - networkroute->has_use =3D true; - networkroute->use =3D Use; - networkroute->has_mtu =3D true; - networkroute->mtu =3D MTU; - networkroute->has_window =3D true; - networkroute->window =3D Window; - networkroute->has_irtt =3D true; - networkroute->irtt =3D IRTT; - networkroute->version =3D 4; + route->iface =3D g_strdup(Iface); + route->destination =3D hexToIPAddress(&Destination, 0); + if (route->destination =3D=3D NULL) { + continue; + } + route->gateway =3D hexToIPAddress(&Gateway, 0); + route->mask =3D hexToIPAddress(&Mask, 0); + route->metric =3D Metric; + route->has_flags =3D true; + route->flags =3D Flags; + route->has_refcnt =3D true; + route->refcnt =3D RefCnt; + route->has_use =3D true; + route->use =3D Use; + route->has_mtu =3D true; + route->mtu =3D MTU; + route->has_window =3D true; + route->window =3D Window; + route->has_irtt =3D true; + route->irtt =3D IRTT; + route->version =3D 4; } QAPI_LIST_APPEND(tail, route); + route =3D NULL; } free(line); -- 2.47.0