summaryrefslogtreecommitdiffstats
path: root/source4/lib/socket/socket_ip.c
diff options
context:
space:
mode:
Diffstat (limited to 'source4/lib/socket/socket_ip.c')
-rw-r--r--source4/lib/socket/socket_ip.c1033
1 files changed, 1033 insertions, 0 deletions
diff --git a/source4/lib/socket/socket_ip.c b/source4/lib/socket/socket_ip.c
new file mode 100644
index 0000000..62dbf1d
--- /dev/null
+++ b/source4/lib/socket/socket_ip.c
@@ -0,0 +1,1033 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Socket IPv4/IPv6 functions
+
+ Copyright (C) Stefan Metzmacher 2004
+ Copyright (C) Andrew Tridgell 2004-2005
+ Copyright (C) Jelmer Vernooij 2004
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "lib/socket/socket.h"
+#include "system/network.h"
+#include "lib/util/util_net.h"
+
+#undef strcasecmp
+
+_PUBLIC_ const struct socket_ops *socket_ipv4_ops(enum socket_type type);
+_PUBLIC_ const struct socket_ops *socket_ipv6_ops(enum socket_type type);
+
+static NTSTATUS ipv4_init(struct socket_context *sock)
+{
+ int type;
+
+ switch (sock->type) {
+ case SOCKET_TYPE_STREAM:
+ type = SOCK_STREAM;
+ break;
+ case SOCKET_TYPE_DGRAM:
+ type = SOCK_DGRAM;
+ break;
+ default:
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ sock->fd = socket(PF_INET, type, 0);
+ if (sock->fd == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ smb_set_close_on_exec(sock->fd);
+
+ sock->backend_name = "ipv4";
+ sock->family = AF_INET;
+
+ return NT_STATUS_OK;
+}
+
+static void ip_close(struct socket_context *sock)
+{
+ if (sock->fd != -1) {
+ close(sock->fd);
+ sock->fd = -1;
+ }
+}
+
+static NTSTATUS ip_connect_complete(struct socket_context *sock, uint32_t flags)
+{
+ int error=0, ret;
+ socklen_t len = sizeof(error);
+
+ /* check for any errors that may have occurred - this is needed
+ for non-blocking connect */
+ ret = getsockopt(sock->fd, SOL_SOCKET, SO_ERROR, &error, &len);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ if (error != 0) {
+ return map_nt_error_from_unix_common(error);
+ }
+
+ ret = set_blocking(sock->fd, false);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ sock->state = SOCKET_STATE_CLIENT_CONNECTED;
+
+ return NT_STATUS_OK;
+}
+
+
+static NTSTATUS ipv4_connect(struct socket_context *sock,
+ const struct socket_address *my_address,
+ const struct socket_address *srv_address,
+ uint32_t flags)
+{
+ struct sockaddr_in srv_addr;
+ struct in_addr my_ip;
+ struct in_addr srv_ip;
+ int ret;
+
+ if (my_address && my_address->sockaddr) {
+ ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ } else if (my_address) {
+ my_ip = interpret_addr2(my_address->addr);
+
+ if (my_ip.s_addr != 0 || my_address->port != 0) {
+ struct sockaddr_in my_addr;
+ ZERO_STRUCT(my_addr);
+#ifdef HAVE_SOCK_SIN_LEN
+ my_addr.sin_len = sizeof(my_addr);
+#endif
+ my_addr.sin_addr.s_addr = my_ip.s_addr;
+ my_addr.sin_port = htons(my_address->port);
+ my_addr.sin_family = PF_INET;
+
+ ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ }
+ }
+
+ if (srv_address->sockaddr) {
+ ret = connect(sock->fd, srv_address->sockaddr, srv_address->sockaddrlen);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ } else {
+ srv_ip = interpret_addr2(srv_address->addr);
+ if (!srv_ip.s_addr) {
+ return NT_STATUS_BAD_NETWORK_NAME;
+ }
+
+ SMB_ASSERT(srv_address->port != 0);
+
+ ZERO_STRUCT(srv_addr);
+#ifdef HAVE_SOCK_SIN_LEN
+ srv_addr.sin_len = sizeof(srv_addr);
+#endif
+ srv_addr.sin_addr.s_addr= srv_ip.s_addr;
+ srv_addr.sin_port = htons(srv_address->port);
+ srv_addr.sin_family = PF_INET;
+
+ ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ }
+
+ return ip_connect_complete(sock, flags);
+}
+
+
+/*
+ note that for simplicity of the API, socket_listen() is also
+ use for DGRAM sockets, but in reality only a bind() is done
+*/
+static NTSTATUS ipv4_listen(struct socket_context *sock,
+ const struct socket_address *my_address,
+ int queue_size, uint32_t flags)
+{
+ struct sockaddr_in my_addr;
+ struct in_addr ip_addr;
+ int ret;
+
+ socket_set_option(sock, "SO_REUSEADDR=1", NULL);
+
+ if (my_address->sockaddr) {
+ ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
+ } else {
+ ip_addr = interpret_addr2(my_address->addr);
+
+ ZERO_STRUCT(my_addr);
+#ifdef HAVE_SOCK_SIN_LEN
+ my_addr.sin_len = sizeof(my_addr);
+#endif
+ my_addr.sin_addr.s_addr = ip_addr.s_addr;
+ my_addr.sin_port = htons(my_address->port);
+ my_addr.sin_family = PF_INET;
+
+ ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
+ }
+
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ if (sock->type == SOCKET_TYPE_STREAM) {
+ ret = listen(sock->fd, queue_size);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ }
+
+ ret = set_blocking(sock->fd, false);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ sock->state= SOCKET_STATE_SERVER_LISTEN;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ipv4_accept(struct socket_context *sock, struct socket_context **new_sock)
+{
+ struct sockaddr_in cli_addr;
+ socklen_t cli_addr_len = sizeof(cli_addr);
+ int new_fd, ret;
+
+ if (sock->type != SOCKET_TYPE_STREAM) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
+ if (new_fd == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ ret = set_blocking(new_fd, false);
+ if (ret == -1) {
+ close(new_fd);
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ smb_set_close_on_exec(new_fd);
+
+
+ /* TODO: we could add a 'accept_check' hook here
+ * which get the black/white lists via socket_set_accept_filter()
+ * or something like that
+ * --metze
+ */
+
+ (*new_sock) = talloc(NULL, struct socket_context);
+ if (!(*new_sock)) {
+ close(new_fd);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* copy the socket_context */
+ (*new_sock)->type = sock->type;
+ (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
+ (*new_sock)->flags = sock->flags;
+
+ (*new_sock)->fd = new_fd;
+
+ (*new_sock)->private_data = NULL;
+ (*new_sock)->ops = sock->ops;
+ (*new_sock)->backend_name = sock->backend_name;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ip_recv(struct socket_context *sock, void *buf,
+ size_t wantlen, size_t *nread)
+{
+ ssize_t gotlen;
+
+ *nread = 0;
+
+ gotlen = recv(sock->fd, buf, wantlen, 0);
+ if (gotlen == 0) {
+ return NT_STATUS_END_OF_FILE;
+ } else if (gotlen == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ *nread = gotlen;
+
+ return NT_STATUS_OK;
+}
+
+
+static NTSTATUS ipv4_recvfrom(struct socket_context *sock, void *buf,
+ size_t wantlen, size_t *nread,
+ TALLOC_CTX *addr_ctx, struct socket_address **_src)
+{
+ ssize_t gotlen;
+ struct sockaddr_in *from_addr;
+ socklen_t from_len = sizeof(*from_addr);
+ struct socket_address *src;
+ char addrstring[INET_ADDRSTRLEN];
+
+ src = talloc(addr_ctx, struct socket_address);
+ if (!src) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ src->family = sock->backend_name;
+
+ from_addr = talloc(src, struct sockaddr_in);
+ if (!from_addr) {
+ talloc_free(src);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ src->sockaddr = (struct sockaddr *)from_addr;
+
+ *nread = 0;
+
+ gotlen = recvfrom(sock->fd, buf, wantlen, 0,
+ src->sockaddr, &from_len);
+ if (gotlen == 0) {
+ talloc_free(src);
+ return NT_STATUS_END_OF_FILE;
+ }
+ if (gotlen == -1) {
+ talloc_free(src);
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ src->sockaddrlen = from_len;
+
+ if (inet_ntop(AF_INET, &from_addr->sin_addr, addrstring,
+ sizeof(addrstring)) == NULL) {
+ talloc_free(src);
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+ src->addr = talloc_strdup(src, addrstring);
+ if (src->addr == NULL) {
+ talloc_free(src);
+ return NT_STATUS_NO_MEMORY;
+ }
+ src->port = ntohs(from_addr->sin_port);
+
+ *nread = gotlen;
+ *_src = src;
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ip_send(struct socket_context *sock,
+ const DATA_BLOB *blob, size_t *sendlen)
+{
+ ssize_t len;
+
+ *sendlen = 0;
+
+ len = send(sock->fd, blob->data, blob->length, 0);
+ if (len == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ *sendlen = len;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ipv4_sendto(struct socket_context *sock,
+ const DATA_BLOB *blob, size_t *sendlen,
+ const struct socket_address *dest_addr)
+{
+ ssize_t len;
+
+ if (dest_addr->sockaddr) {
+ len = sendto(sock->fd, blob->data, blob->length, 0,
+ dest_addr->sockaddr, dest_addr->sockaddrlen);
+ } else {
+ struct sockaddr_in srv_addr;
+ struct in_addr addr;
+
+ SMB_ASSERT(dest_addr->port != 0);
+
+ ZERO_STRUCT(srv_addr);
+#ifdef HAVE_SOCK_SIN_LEN
+ srv_addr.sin_len = sizeof(srv_addr);
+#endif
+ addr = interpret_addr2(dest_addr->addr);
+ if (addr.s_addr == 0) {
+ return NT_STATUS_HOST_UNREACHABLE;
+ }
+ srv_addr.sin_addr.s_addr = addr.s_addr;
+ srv_addr.sin_port = htons(dest_addr->port);
+ srv_addr.sin_family = PF_INET;
+
+ *sendlen = 0;
+
+ len = sendto(sock->fd, blob->data, blob->length, 0,
+ (struct sockaddr *)&srv_addr, sizeof(srv_addr));
+ }
+ if (len == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ *sendlen = len;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ipv4_set_option(struct socket_context *sock, const char *option, const char *val)
+{
+ set_socket_options(sock->fd, option);
+ return NT_STATUS_OK;
+}
+
+static char *ipv4_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+ struct sockaddr_in peer_addr;
+ socklen_t len = sizeof(peer_addr);
+ struct hostent *he;
+ int ret;
+
+ ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
+ if (ret == -1) {
+ return NULL;
+ }
+
+ he = gethostbyaddr((char *)&peer_addr.sin_addr, sizeof(peer_addr.sin_addr), AF_INET);
+ if (he == NULL) {
+ return NULL;
+ }
+
+ return talloc_strdup(mem_ctx, he->h_name);
+}
+
+static struct socket_address *ipv4_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+ struct sockaddr_in *peer_addr;
+ socklen_t len = sizeof(*peer_addr);
+ struct socket_address *peer;
+ char addrstring[INET_ADDRSTRLEN];
+ int ret;
+
+ peer = talloc(mem_ctx, struct socket_address);
+ if (!peer) {
+ return NULL;
+ }
+
+ peer->family = sock->backend_name;
+ peer_addr = talloc(peer, struct sockaddr_in);
+ if (!peer_addr) {
+ talloc_free(peer);
+ return NULL;
+ }
+
+ peer->sockaddr = (struct sockaddr *)peer_addr;
+
+ ret = getpeername(sock->fd, peer->sockaddr, &len);
+ if (ret == -1) {
+ talloc_free(peer);
+ return NULL;
+ }
+
+ peer->sockaddrlen = len;
+
+ if (inet_ntop(AF_INET, &peer_addr->sin_addr, addrstring,
+ sizeof(addrstring)) == NULL) {
+ talloc_free(peer);
+ return NULL;
+ }
+ peer->addr = talloc_strdup(peer, addrstring);
+ if (!peer->addr) {
+ talloc_free(peer);
+ return NULL;
+ }
+ peer->port = ntohs(peer_addr->sin_port);
+
+ return peer;
+}
+
+static struct socket_address *ipv4_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+ struct sockaddr_in *local_addr;
+ socklen_t len = sizeof(*local_addr);
+ struct socket_address *local;
+ char addrstring[INET_ADDRSTRLEN];
+ int ret;
+
+ local = talloc(mem_ctx, struct socket_address);
+ if (!local) {
+ return NULL;
+ }
+
+ local->family = sock->backend_name;
+ local_addr = talloc(local, struct sockaddr_in);
+ if (!local_addr) {
+ talloc_free(local);
+ return NULL;
+ }
+
+ local->sockaddr = (struct sockaddr *)local_addr;
+
+ ret = getsockname(sock->fd, local->sockaddr, &len);
+ if (ret == -1) {
+ talloc_free(local);
+ return NULL;
+ }
+
+ local->sockaddrlen = len;
+
+ if (inet_ntop(AF_INET, &local_addr->sin_addr, addrstring,
+ sizeof(addrstring)) == NULL) {
+ talloc_free(local);
+ return NULL;
+ }
+ local->addr = talloc_strdup(local, addrstring);
+ if (!local->addr) {
+ talloc_free(local);
+ return NULL;
+ }
+ local->port = ntohs(local_addr->sin_port);
+
+ return local;
+}
+static int ip_get_fd(struct socket_context *sock)
+{
+ return sock->fd;
+}
+
+static NTSTATUS ip_pending(struct socket_context *sock, size_t *npending)
+{
+ int value = 0;
+ if (ioctl(sock->fd, FIONREAD, &value) == 0) {
+ *npending = value;
+ return NT_STATUS_OK;
+ }
+ return map_nt_error_from_unix_common(errno);
+}
+
+static const struct socket_ops ipv4_ops = {
+ .name = "ipv4",
+ .fn_init = ipv4_init,
+ .fn_connect = ipv4_connect,
+ .fn_connect_complete = ip_connect_complete,
+ .fn_listen = ipv4_listen,
+ .fn_accept = ipv4_accept,
+ .fn_recv = ip_recv,
+ .fn_recvfrom = ipv4_recvfrom,
+ .fn_send = ip_send,
+ .fn_sendto = ipv4_sendto,
+ .fn_pending = ip_pending,
+ .fn_close = ip_close,
+
+ .fn_set_option = ipv4_set_option,
+
+ .fn_get_peer_name = ipv4_get_peer_name,
+ .fn_get_peer_addr = ipv4_get_peer_addr,
+ .fn_get_my_addr = ipv4_get_my_addr,
+
+ .fn_get_fd = ip_get_fd
+};
+
+_PUBLIC_ const struct socket_ops *socket_ipv4_ops(enum socket_type type)
+{
+ return &ipv4_ops;
+}
+
+#ifdef HAVE_IPV6
+
+static struct in6_addr interpret_addr6(const char *name)
+{
+ char addr[INET6_ADDRSTRLEN];
+ struct in6_addr dest6;
+ const char *sp = name;
+ char *p;
+ int ret;
+
+ if (sp == NULL) return in6addr_any;
+
+ p = strchr_m(sp, '%');
+
+ if (strcasecmp(sp, "localhost") == 0) {
+ sp = "::1";
+ }
+
+ /*
+ * Cope with link-local.
+ * This is IP:v6:addr%ifname.
+ */
+
+ if (p && (p > sp) && (if_nametoindex(p+1) != 0)) {
+ strlcpy(addr, sp,
+ MIN(PTR_DIFF(p,sp)+1,
+ sizeof(addr)));
+ sp = addr;
+ }
+
+ ret = inet_pton(AF_INET6, sp, &dest6);
+ if (ret > 0) {
+ return dest6;
+ }
+
+ return in6addr_any;
+}
+
+static NTSTATUS ipv6_init(struct socket_context *sock)
+{
+ int type;
+
+ switch (sock->type) {
+ case SOCKET_TYPE_STREAM:
+ type = SOCK_STREAM;
+ break;
+ case SOCKET_TYPE_DGRAM:
+ type = SOCK_DGRAM;
+ break;
+ default:
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ sock->fd = socket(PF_INET6, type, 0);
+ if (sock->fd == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ smb_set_close_on_exec(sock->fd);
+
+ sock->backend_name = "ipv6";
+ sock->family = AF_INET6;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ipv6_tcp_connect(struct socket_context *sock,
+ const struct socket_address *my_address,
+ const struct socket_address *srv_address,
+ uint32_t flags)
+{
+ int ret;
+
+ if (my_address && my_address->sockaddr) {
+ ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ } else if (my_address) {
+ struct in6_addr my_ip;
+ my_ip = interpret_addr6(my_address->addr);
+
+ if (memcmp(&my_ip, &in6addr_any, sizeof(my_ip)) || my_address->port != 0) {
+ struct sockaddr_in6 my_addr;
+ ZERO_STRUCT(my_addr);
+ my_addr.sin6_addr = my_ip;
+ my_addr.sin6_port = htons(my_address->port);
+ my_addr.sin6_family = PF_INET6;
+
+ ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ }
+ }
+
+ if (srv_address->sockaddr) {
+ ret = connect(sock->fd, srv_address->sockaddr, srv_address->sockaddrlen);
+ } else {
+ struct in6_addr srv_ip;
+ struct sockaddr_in6 srv_addr;
+ srv_ip = interpret_addr6(srv_address->addr);
+ if (memcmp(&srv_ip, &in6addr_any, sizeof(srv_ip)) == 0) {
+ return NT_STATUS_BAD_NETWORK_NAME;
+ }
+
+ ZERO_STRUCT(srv_addr);
+ srv_addr.sin6_addr = srv_ip;
+ srv_addr.sin6_port = htons(srv_address->port);
+ srv_addr.sin6_family = PF_INET6;
+
+ ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
+ }
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ return ip_connect_complete(sock, flags);
+}
+
+/*
+ fix the sin6_scope_id based on the address interface
+ */
+static void fix_scope_id(struct sockaddr_in6 *in6,
+ const char *address)
+{
+ const char *p = strchr(address, '%');
+ if (p != NULL) {
+ in6->sin6_scope_id = if_nametoindex(p+1);
+ }
+}
+
+
+static NTSTATUS ipv6_listen(struct socket_context *sock,
+ const struct socket_address *my_address,
+ int queue_size, uint32_t flags)
+{
+ struct sockaddr_in6 my_addr;
+ struct in6_addr ip_addr;
+ int ret;
+
+ socket_set_option(sock, "SO_REUSEADDR=1", NULL);
+
+ if (my_address->sockaddr) {
+ ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
+ } else {
+ int one = 1;
+ ip_addr = interpret_addr6(my_address->addr);
+
+ ZERO_STRUCT(my_addr);
+ my_addr.sin6_addr = ip_addr;
+ my_addr.sin6_port = htons(my_address->port);
+ my_addr.sin6_family = PF_INET6;
+ fix_scope_id(&my_addr, my_address->addr);
+
+ /* when binding on ipv6 we always want to only bind on v6 */
+ ret = setsockopt(sock->fd, IPPROTO_IPV6, IPV6_V6ONLY,
+ (const void *)&one, sizeof(one));
+ if (ret != -1) {
+ ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
+ }
+ }
+
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ if (sock->type == SOCKET_TYPE_STREAM) {
+ ret = listen(sock->fd, queue_size);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+ }
+
+ ret = set_blocking(sock->fd, false);
+ if (ret == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ sock->state= SOCKET_STATE_SERVER_LISTEN;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ipv6_tcp_accept(struct socket_context *sock, struct socket_context **new_sock)
+{
+ struct sockaddr_in6 cli_addr;
+ socklen_t cli_addr_len = sizeof(cli_addr);
+ int new_fd, ret;
+
+ if (sock->type != SOCKET_TYPE_STREAM) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
+ if (new_fd == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ ret = set_blocking(new_fd, false);
+ if (ret == -1) {
+ close(new_fd);
+ return map_nt_error_from_unix_common(errno);
+ }
+ smb_set_close_on_exec(new_fd);
+
+ /* TODO: we could add a 'accept_check' hook here
+ * which get the black/white lists via socket_set_accept_filter()
+ * or something like that
+ * --metze
+ */
+
+ (*new_sock) = talloc(NULL, struct socket_context);
+ if (!(*new_sock)) {
+ close(new_fd);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* copy the socket_context */
+ (*new_sock)->type = sock->type;
+ (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
+ (*new_sock)->flags = sock->flags;
+
+ (*new_sock)->fd = new_fd;
+
+ (*new_sock)->private_data = NULL;
+ (*new_sock)->ops = sock->ops;
+ (*new_sock)->backend_name = sock->backend_name;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ipv6_recvfrom(struct socket_context *sock, void *buf,
+ size_t wantlen, size_t *nread,
+ TALLOC_CTX *addr_ctx, struct socket_address **_src)
+{
+ ssize_t gotlen;
+ struct sockaddr_in6 *from_addr;
+ socklen_t from_len = sizeof(*from_addr);
+ struct socket_address *src;
+ char addrstring[INET6_ADDRSTRLEN];
+
+ src = talloc(addr_ctx, struct socket_address);
+ if (!src) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ src->family = sock->backend_name;
+
+ from_addr = talloc(src, struct sockaddr_in6);
+ if (!from_addr) {
+ talloc_free(src);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ src->sockaddr = (struct sockaddr *)from_addr;
+
+ *nread = 0;
+
+ gotlen = recvfrom(sock->fd, buf, wantlen, 0,
+ src->sockaddr, &from_len);
+ if (gotlen == 0) {
+ talloc_free(src);
+ return NT_STATUS_END_OF_FILE;
+ } else if (gotlen == -1) {
+ talloc_free(src);
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ src->sockaddrlen = from_len;
+
+ if (inet_ntop(AF_INET6, &from_addr->sin6_addr, addrstring, sizeof(addrstring)) == NULL) {
+ DEBUG(0, ("Unable to convert address to string: %s\n", strerror(errno)));
+ talloc_free(src);
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ src->addr = talloc_strdup(src, addrstring);
+ if (src->addr == NULL) {
+ talloc_free(src);
+ return NT_STATUS_NO_MEMORY;
+ }
+ src->port = ntohs(from_addr->sin6_port);
+
+ *nread = gotlen;
+ *_src = src;
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ipv6_sendto(struct socket_context *sock,
+ const DATA_BLOB *blob, size_t *sendlen,
+ const struct socket_address *dest_addr)
+{
+ ssize_t len;
+
+ if (dest_addr->sockaddr) {
+ len = sendto(sock->fd, blob->data, blob->length, 0,
+ dest_addr->sockaddr, dest_addr->sockaddrlen);
+ } else {
+ struct sockaddr_in6 srv_addr;
+ struct in6_addr addr;
+
+ ZERO_STRUCT(srv_addr);
+ addr = interpret_addr6(dest_addr->addr);
+ if (memcmp(&addr.s6_addr, &in6addr_any,
+ sizeof(addr.s6_addr)) == 0) {
+ return NT_STATUS_HOST_UNREACHABLE;
+ }
+ srv_addr.sin6_addr = addr;
+ srv_addr.sin6_port = htons(dest_addr->port);
+ srv_addr.sin6_family = PF_INET6;
+
+ *sendlen = 0;
+
+ len = sendto(sock->fd, blob->data, blob->length, 0,
+ (struct sockaddr *)&srv_addr, sizeof(srv_addr));
+ }
+ if (len == -1) {
+ return map_nt_error_from_unix_common(errno);
+ }
+
+ *sendlen = len;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ipv6_set_option(struct socket_context *sock, const char *option, const char *val)
+{
+ set_socket_options(sock->fd, option);
+ return NT_STATUS_OK;
+}
+
+static char *ipv6_tcp_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+ struct sockaddr_in6 peer_addr;
+ socklen_t len = sizeof(peer_addr);
+ struct hostent *he;
+ int ret;
+
+ ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
+ if (ret == -1) {
+ return NULL;
+ }
+
+ he = gethostbyaddr((char *)&peer_addr.sin6_addr, sizeof(peer_addr.sin6_addr), AF_INET6);
+ if (he == NULL) {
+ return NULL;
+ }
+
+ return talloc_strdup(mem_ctx, he->h_name);
+}
+
+static struct socket_address *ipv6_tcp_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+ struct sockaddr_in6 *peer_addr;
+ socklen_t len = sizeof(*peer_addr);
+ struct socket_address *peer;
+ int ret;
+ char addr[128];
+ const char *addr_ret;
+
+ peer = talloc(mem_ctx, struct socket_address);
+ if (!peer) {
+ return NULL;
+ }
+
+ peer->family = sock->backend_name;
+ peer_addr = talloc(peer, struct sockaddr_in6);
+ if (!peer_addr) {
+ talloc_free(peer);
+ return NULL;
+ }
+
+ peer->sockaddr = (struct sockaddr *)peer_addr;
+
+ ret = getpeername(sock->fd, peer->sockaddr, &len);
+ if (ret == -1) {
+ talloc_free(peer);
+ return NULL;
+ }
+
+ peer->sockaddrlen = len;
+
+ addr_ret = inet_ntop(AF_INET6, &peer_addr->sin6_addr, addr, sizeof(addr));
+ if (addr_ret == NULL) {
+ talloc_free(peer);
+ return NULL;
+ }
+
+ peer->addr = talloc_strdup(peer, addr_ret);
+ if (peer->addr == NULL) {
+ talloc_free(peer);
+ return NULL;
+ }
+
+ peer->port = ntohs(peer_addr->sin6_port);
+
+ return peer;
+}
+
+static struct socket_address *ipv6_tcp_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+ struct sockaddr_in6 *local_addr;
+ socklen_t len = sizeof(*local_addr);
+ struct socket_address *local;
+ int ret;
+ char addrstring[INET6_ADDRSTRLEN];
+
+ local = talloc(mem_ctx, struct socket_address);
+ if (!local) {
+ return NULL;
+ }
+
+ local->family = sock->backend_name;
+ local_addr = talloc(local, struct sockaddr_in6);
+ if (!local_addr) {
+ talloc_free(local);
+ return NULL;
+ }
+
+ local->sockaddr = (struct sockaddr *)local_addr;
+
+ ret = getsockname(sock->fd, local->sockaddr, &len);
+ if (ret == -1) {
+ talloc_free(local);
+ return NULL;
+ }
+
+ local->sockaddrlen = len;
+
+ if (inet_ntop(AF_INET6, &local_addr->sin6_addr, addrstring,
+ sizeof(addrstring)) == NULL) {
+ DEBUG(0, ("Unable to convert address to string: %s\n",
+ strerror(errno)));
+ talloc_free(local);
+ return NULL;
+ }
+
+ local->addr = talloc_strdup(local, addrstring);
+ if (!local->addr) {
+ talloc_free(local);
+ return NULL;
+ }
+ local->port = ntohs(local_addr->sin6_port);
+
+ return local;
+}
+
+static const struct socket_ops ipv6_tcp_ops = {
+ .name = "ipv6",
+ .fn_init = ipv6_init,
+ .fn_connect = ipv6_tcp_connect,
+ .fn_connect_complete = ip_connect_complete,
+ .fn_listen = ipv6_listen,
+ .fn_accept = ipv6_tcp_accept,
+ .fn_recv = ip_recv,
+ .fn_recvfrom = ipv6_recvfrom,
+ .fn_send = ip_send,
+ .fn_sendto = ipv6_sendto,
+ .fn_pending = ip_pending,
+ .fn_close = ip_close,
+
+ .fn_set_option = ipv6_set_option,
+
+ .fn_get_peer_name = ipv6_tcp_get_peer_name,
+ .fn_get_peer_addr = ipv6_tcp_get_peer_addr,
+ .fn_get_my_addr = ipv6_tcp_get_my_addr,
+
+ .fn_get_fd = ip_get_fd
+};
+
+_PUBLIC_ const struct socket_ops *socket_ipv6_ops(enum socket_type type)
+{
+ return &ipv6_tcp_ops;
+}
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-07 09:55:39 +0000