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/*
Unix SMB/CIFS implementation.
Socket functions
Copyright (C) Stefan Metzmacher 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/>.
*/
#ifndef _SAMBA_SOCKET_H
#define _SAMBA_SOCKET_H
#include "lib/events/events.h"
struct socket_context;
enum socket_type {
SOCKET_TYPE_STREAM,
SOCKET_TYPE_DGRAM
};
struct socket_address {
const char *family;
char *addr;
int port;
struct sockaddr *sockaddr;
size_t sockaddrlen;
};
struct socket_ops {
const char *name;
NTSTATUS (*fn_init)(struct socket_context *sock);
/* client ops */
NTSTATUS (*fn_connect)(struct socket_context *sock,
const struct socket_address *my_address,
const struct socket_address *server_address,
uint32_t flags);
/* complete a non-blocking connect */
NTSTATUS (*fn_connect_complete)(struct socket_context *sock,
uint32_t flags);
/* server ops */
NTSTATUS (*fn_listen)(struct socket_context *sock,
const struct socket_address *my_address,
int queue_size, uint32_t flags);
NTSTATUS (*fn_accept)(struct socket_context *sock,
struct socket_context **new_sock);
/* general ops */
NTSTATUS (*fn_recv)(struct socket_context *sock, void *buf,
size_t wantlen, size_t *nread);
NTSTATUS (*fn_send)(struct socket_context *sock,
const DATA_BLOB *blob, size_t *sendlen);
NTSTATUS (*fn_sendto)(struct socket_context *sock,
const DATA_BLOB *blob, size_t *sendlen,
const struct socket_address *dest_addr);
NTSTATUS (*fn_recvfrom)(struct socket_context *sock,
void *buf, size_t wantlen, size_t *nread,
TALLOC_CTX *addr_ctx, struct socket_address **src_addr);
NTSTATUS (*fn_pending)(struct socket_context *sock, size_t *npending);
void (*fn_close)(struct socket_context *sock);
NTSTATUS (*fn_set_option)(struct socket_context *sock, const char *option, const char *val);
char *(*fn_get_peer_name)(struct socket_context *sock, TALLOC_CTX *mem_ctx);
struct socket_address *(*fn_get_peer_addr)(struct socket_context *sock, TALLOC_CTX *mem_ctx);
struct socket_address *(*fn_get_my_addr)(struct socket_context *sock, TALLOC_CTX *mem_ctx);
int (*fn_get_fd)(struct socket_context *sock);
};
enum socket_state {
SOCKET_STATE_UNDEFINED,
SOCKET_STATE_CLIENT_START,
SOCKET_STATE_CLIENT_CONNECTED,
SOCKET_STATE_CLIENT_STARTTLS,
SOCKET_STATE_CLIENT_ERROR,
SOCKET_STATE_SERVER_LISTEN,
SOCKET_STATE_SERVER_CONNECTED,
SOCKET_STATE_SERVER_STARTTLS,
SOCKET_STATE_SERVER_ERROR
};
#define SOCKET_FLAG_BLOCK 0x00000001
#define SOCKET_FLAG_PEEK 0x00000002
#define SOCKET_FLAG_TESTNONBLOCK 0x00000004
#define SOCKET_FLAG_ENCRYPT 0x00000008 /* This socket
* implementation requires
* that re-sends be
* consistant, because it
* is encrypting data.
* This modifies the
* TESTNONBLOCK case */
#define SOCKET_FLAG_NOCLOSE 0x00000010 /* don't auto-close on free */
struct socket_context {
enum socket_type type;
enum socket_state state;
uint32_t flags;
int fd;
void *private_data;
const struct socket_ops *ops;
const char *backend_name;
/* specific to the ip backend */
int family;
};
/* prototypes */
NTSTATUS socket_create_with_ops(TALLOC_CTX *mem_ctx, const struct socket_ops *ops,
struct socket_context **new_sock,
enum socket_type type, uint32_t flags);
NTSTATUS socket_create(const char *name, enum socket_type type,
struct socket_context **new_sock, uint32_t flags);
NTSTATUS socket_connect(struct socket_context *sock,
const struct socket_address *my_address,
const struct socket_address *server_address,
uint32_t flags);
NTSTATUS socket_connect_complete(struct socket_context *sock, uint32_t flags);
NTSTATUS socket_listen(struct socket_context *sock,
const struct socket_address *my_address,
int queue_size, uint32_t flags);
NTSTATUS socket_accept(struct socket_context *sock, struct socket_context **new_sock);
NTSTATUS socket_recv(struct socket_context *sock, void *buf,
size_t wantlen, size_t *nread);
NTSTATUS socket_recvfrom(struct socket_context *sock, void *buf,
size_t wantlen, size_t *nread,
TALLOC_CTX *addr_ctx, struct socket_address **src_addr);
NTSTATUS socket_send(struct socket_context *sock,
const DATA_BLOB *blob, size_t *sendlen);
NTSTATUS socket_sendto(struct socket_context *sock,
const DATA_BLOB *blob, size_t *sendlen,
const struct socket_address *dest_addr);
NTSTATUS socket_pending(struct socket_context *sock, size_t *npending);
NTSTATUS socket_set_option(struct socket_context *sock, const char *option, const char *val);
char *socket_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx);
struct socket_address *socket_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx);
struct socket_address *socket_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx);
int socket_get_fd(struct socket_context *sock);
NTSTATUS socket_dup(struct socket_context *sock);
struct socket_address *socket_address_from_strings(TALLOC_CTX *mem_ctx,
const char *type,
const char *host,
int port);
struct socket_address *socket_address_from_sockaddr(TALLOC_CTX *mem_ctx,
struct sockaddr *sockaddr,
size_t addrlen);
const struct socket_ops *socket_getops_byname(const char *name, enum socket_type type);
bool allow_access(TALLOC_CTX *mem_ctx,
const char **deny_list, const char **allow_list,
const char *cname, const char *caddr);
bool socket_check_access(struct socket_context *sock,
const char *service_name,
const char **allow_list, const char **deny_list);
struct composite_context *socket_connect_send(struct socket_context *sock,
struct socket_address *my_address,
struct socket_address *server_address,
uint32_t flags,
struct event_context *event_ctx);
NTSTATUS socket_connect_recv(struct composite_context *ctx);
NTSTATUS socket_connect_ev(struct socket_context *sock,
struct socket_address *my_address,
struct socket_address *server_address,
uint32_t flags, struct event_context *ev);
struct composite_context *socket_connect_multi_send(TALLOC_CTX *mem_ctx,
const char *server_address,
int num_server_ports,
uint16_t *server_ports,
struct event_context *event_ctx);
NTSTATUS socket_connect_multi_recv(struct composite_context *ctx,
TALLOC_CTX *mem_ctx,
struct socket_context **result,
uint16_t *port);
NTSTATUS socket_connect_multi(TALLOC_CTX *mem_ctx, const char *server_address,
int num_server_ports, uint16_t *server_ports,
struct event_context *event_ctx,
struct socket_context **result,
uint16_t *port);
void set_socket_options(int fd, const char *options);
void socket_set_flags(struct socket_context *socket, unsigned flags);
#endif /* _SAMBA_SOCKET_H */
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