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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1730882514; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HaJWEOS2a9nzhPUG1M6thfJXd91QMcJRIuC7D1z82ds=; b=Ivq1tYkDVa93ywVu/yTZbXsWny8d6YjyChuUenr+1wJMJofoenJgMKqO9UQ1R9+5Q3y1iy leRE2gbDYC58rwN60mppWG1D9XlhYV91mu9djKltYSYAJlMxLVFFAvssoORWlYHJCgMhbA 5kBlpXU4gO6dFrQW7V5BZE28/whsVQ0= X-MC-Unique: tV2k78k_NcGCMcvC5u9s8w-1 X-Mimecast-MFC-AGG-ID: tV2k78k_NcGCMcvC5u9s8w From: Dehan Meng To: qemu-devel@nongnu.org Cc: demeng@redhat.com, kkostiuk@redhat.com, michael.roth@amd.com, peter.maydell@linaro.org, berrange@redhat.com Subject: [PATCH v5 1/3] qemu-ga: Add 'Null' check and Redefine 'route' Date: Wed, 6 Nov 2024 16:41:32 +0800 Message-Id: <20241106084134.1133061-2-demeng@redhat.com> In-Reply-To: <20241106084134.1133061-1-demeng@redhat.com> References: <20241106084134.1133061-1-demeng@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" 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 --- 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; =20 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); =20 @@ -2160,26 +2162,25 @@ GuestNetworkRouteList *qmp_guest_network_get_route(= Error **errp) continue; } =20 - 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( - "%d", DesPrefixlen - ); - networkroute->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; + g_autoptr(GuestNetworkRoute) route =3D g_new0(GuestNetwork= Route, 1); + + route->destination =3D hex_to_ip_address(destination, 1); + route->iface =3D g_strdup(iface); + if (route->destination =3D=3D NULL) { + continue; + } + route->source =3D hex_to_ip_address(source, 1); + route->nexthop =3D hex_to_ip_address(next_hop, 1); + route->desprefixlen =3D g_strdup_printf("%d", des_prefixle= n); + route->srcprefixlen =3D g_strdup_printf("%d", src_prefixle= n); + 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->version =3D 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; } =20 - 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; + g_autoptr(GuestNetworkRoute) route =3D g_new0(GuestNetwork= Route, 1); + + route->destination =3D hex_to_ip_address(destination, 1); + route->iface =3D g_strdup(iface); + if (route->destination =3D=3D NULL) { + continue; + } + route->gateway =3D hex_to_ip_address(&gateway, 0); + route->mask =3D hex_to_ip_address(&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; } =20 QAPI_LIST_APPEND(tail, route); --=20 2.40.1