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66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
#ifndef DROPBEAR_NETIO_H
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#define DROPBEAR_NETIO_H
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#include "includes.h"
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#include "buffer.h"
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#include "queue.h"
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enum dropbear_prio {
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DROPBEAR_PRIO_DEFAULT = 10,
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DROPBEAR_PRIO_LOWDELAY = 11,
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DROPBEAR_PRIO_BULK = 12,
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};
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void set_sock_nodelay(int sock);
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void set_sock_priority(int sock, enum dropbear_prio prio);
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int get_sock_port(int sock);
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void get_socket_address(int fd, char **local_host, char **local_port,
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char **remote_host, char **remote_port, int host_lookup);
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void getaddrstring(struct sockaddr_storage* addr,
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char **ret_host, char **ret_port, int host_lookup);
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int dropbear_listen(const char* address, const char* port,
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int *socks, unsigned int sockcount, char **errstring, int *maxfd);
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struct dropbear_progress_connection;
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/* result is DROPBEAR_SUCCESS or DROPBEAR_FAILURE.
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errstring is only set on DROPBEAR_FAILURE, returns failure message for the last attempted socket */
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typedef void(*connect_callback)(int result, int sock, void* data, const char* errstring);
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/* Always returns a progress connection, if it fails it will call the callback at a later point */
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struct dropbear_progress_connection * connect_remote (const char* remotehost, const char* remoteport,
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connect_callback cb, void *cb_data, const char* bind_address, const char* bind_port);
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/* Sets up for select() */
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void set_connect_fds(fd_set *writefd);
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/* Handles ready sockets after select() */
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void handle_connect_fds(const fd_set *writefd);
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/* Cleanup */
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void remove_connect_pending(void);
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/* Doesn't actually stop the connect, but adds a dummy callback instead */
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void cancel_connect(struct dropbear_progress_connection *c);
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void connect_set_writequeue(struct dropbear_progress_connection *c, struct Queue *writequeue);
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/* TODO: writev #ifdef guard */
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/* Fills out iov which contains iov_count slots, returning the number filled in iov_count */
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void packet_queue_to_iovec(const struct Queue *queue, struct iovec *iov, unsigned int *iov_count);
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void packet_queue_consume(struct Queue *queue, ssize_t written);
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#if DROPBEAR_SERVER_TCP_FAST_OPEN
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/* Try for any Linux builds, will fall back if the kernel doesn't support it */
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void set_listen_fast_open(int sock);
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/* Define values which may be supported by the kernel even if the libc is too old */
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#ifndef TCP_FASTOPEN
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#define TCP_FASTOPEN 23
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#endif
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#ifndef MSG_FASTOPEN
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#define MSG_FASTOPEN 0x20000000
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#endif
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#endif
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#endif
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