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Thu, 1 Feb 2024 21:03:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on lists.libvirt.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H5, RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.4 X-MC-Unique: NEjKMZGWOHCb3VmHRjYytA-1 From: Jiri Denemark To: devel@lists.libvirt.org Subject: [libvirt PATCH 3/7] util: Introduce virSocketAddrBytes Date: Thu, 1 Feb 2024 22:02:45 +0100 Message-ID: <8114954ba25f31db5160dc42c077162ea9691d66.1706821238.git.jdenemar@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Message-ID-Hash: TUWK3AR3HZVTIMIDUBBISCIXQWU67IEZ X-Message-ID-Hash: TUWK3AR3HZVTIMIDUBBISCIXQWU67IEZ X-MailFrom: jdenemar@redhat.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-config-1; header-match-config-2; header-match-config-3; header-match-devel.lists.libvirt.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header X-Mailman-Version: 3.2.2 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZM-MESSAGEID: 1706821756018100001 Signed-off-by: Jiri Denemark --- src/libvirt_private.syms | 1 + src/util/virsocketaddr.c | 63 ++++++++++++++++++++++++++++++++++++++++ src/util/virsocketaddr.h | 4 +++ 3 files changed, 68 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 6b4fe17e20..0be273511d 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -3368,6 +3368,7 @@ virSocketSendFD; # util/virsocketaddr.h virSocketAddrBroadcast; virSocketAddrBroadcastByPrefix; +virSocketAddrBytes; virSocketAddrCheckNetmask; virSocketAddrEqual; virSocketAddrFormat; diff --git a/src/util/virsocketaddr.c b/src/util/virsocketaddr.c index fbda858cfe..0a1ae1ac5f 100644 --- a/src/util/virsocketaddr.c +++ b/src/util/virsocketaddr.c @@ -30,6 +30,7 @@ */ typedef unsigned char virSocketAddrIPv4[4]; typedef unsigned short virSocketAddrIPv6[8]; +typedef unsigned char virSocketAddrIPv6Bytes[16]; typedef unsigned char virSocketAddrIPv6Nibbles[32]; =20 static int @@ -68,6 +69,23 @@ virSocketAddrGetIPv6Addr(const virSocketAddr *addr, virS= ocketAddrIPv6 *tab) return 0; } =20 + +static int +virSocketAddrGetIPv6Bytes(const virSocketAddr *addr, + virSocketAddrIPv6Bytes *tab) +{ + size_t i; + + if (!addr || !tab || addr->data.stor.ss_family !=3D AF_INET6) + return -1; + + for (i =3D 0; i < 16; i++) + (*tab)[i] =3D addr->data.inet6.sin6_addr.s6_addr[i]; + + return 0; +} + + static int virSocketAddrGetIPv6Nibbles(const virSocketAddr *addr, virSocketAddrIPv6Nibbles *tab) @@ -1331,6 +1349,51 @@ virSocketAddrPTRDomain(const virSocketAddr *addr, return 0; } =20 + +/** + * virSocketAddrBytes: + * @addr: address to convert to byte array + * @bytes: a preallocated array to store the address bytes to + * @maxBytes: the size of @bytes + * + * Extracts individual bytes of an IPv4 or IPv6 address in the provided @b= ytes + * array, which should be large enough to store 16 bytes (the size of an I= Pv6 + * address). Bytes are stored in network order. + * + * Returns the number of bytes stored in @bytes on success or 0 when @bytes + * array is not big enough or @addr is not IPv4 or IPv6. + */ +int +virSocketAddrBytes(const virSocketAddr *addr, + unsigned char *bytes, + int maxBytes) +{ + if (VIR_SOCKET_ADDR_IS_FAMILY(addr, AF_INET6)) { + virSocketAddrIPv6Bytes ip; + + if (maxBytes < sizeof(ip)) + return 0; + + virSocketAddrGetIPv6Bytes(addr, &ip); + memcpy(bytes, ip, sizeof(ip)); + return sizeof(ip); + } + + if (VIR_SOCKET_ADDR_IS_FAMILY(addr, AF_INET)) { + virSocketAddrIPv4 ip; + + if (maxBytes < sizeof(ip)) + return 0; + + virSocketAddrGetIPv4Addr(addr, &ip); + memcpy(bytes, ip, sizeof(ip)); + return sizeof(ip); + } + + return 0; +} + + void virSocketAddrFree(virSocketAddr *addr) { diff --git a/src/util/virsocketaddr.h b/src/util/virsocketaddr.h index ec265d6e44..47b8effa85 100644 --- a/src/util/virsocketaddr.h +++ b/src/util/virsocketaddr.h @@ -143,6 +143,10 @@ int virSocketAddrPTRDomain(const virSocketAddr *addr, char **ptr) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3); =20 +int virSocketAddrBytes(const virSocketAddr *addr, + unsigned char *bytes, + int maxBytes); + void virSocketAddrFree(virSocketAddr *addr); =20 G_DEFINE_AUTOPTR_CLEANUP_FUNC(virSocketAddr, virSocketAddrFree); --=20 2.43.0 _______________________________________________ Devel mailing list -- devel@lists.libvirt.org To unsubscribe send an email to devel-leave@lists.libvirt.org