2 * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file net.h exported symbols from net.c */
10 * the buffer size of the sun_path component of struct sockaddr_un
12 * While glibc doesn't define \p UNIX_PATH_MAX, it
13 * documents it has being limited to 108 bytes.
16 #define UNIX_PATH_MAX 108
19 /** \cond Userland defines for Linux DCCP support. */
21 #define IPPROTO_DCCP 33 /**< IANA assigned value */
22 #define SOCK_DCCP 6 /**< Linux socket type */
23 #define SOL_DCCP 269 /**< Linux socket level */
28 * Generic socket creation (passive and active sockets).
30 extern int makesock(unsigned l3type, unsigned l4type, int passive,
31 const char *host, unsigned short port_number);
34 * Functions to support listening sockets.
36 /** How many pending connections queue of a listening server will hold. */
38 extern int para_listen(unsigned l3type, unsigned l4type, unsigned short port);
40 /** Pretty-printing of IPv4/6 socket addresses */
41 extern char *host_and_port(struct sockaddr *sa, socklen_t len);
42 extern char *local_name(int sockfd);
43 extern char *remote_name(int sockfd);
45 /** used to crypt the communication between para_server and para_client */
46 typedef void crypt_function(unsigned long len,
47 const unsigned char *indata, unsigned char *outdata, void *private_data);
49 int get_stream_socket(int domain);
50 int send_buffer(int, const char *);
51 int send_bin_buffer(int, const char *, size_t);
52 __printf_2_3 int send_va_buffer(int fd, const char *fmt, ...);
53 int recv_buffer(int fd, char *buf, size_t size);
54 int recv_bin_buffer(int fd, char *buf, size_t size);
55 int para_accept(int, void *addr, socklen_t size);
56 int create_local_socket(const char *name, struct sockaddr_un *unix_addr,
58 int init_unix_addr(struct sockaddr_un *, const char *);
59 int recv_cred_buffer(int, char *, size_t);
60 ssize_t send_cred_buffer(int, char*);
61 int recv_pattern(int fd, const char *pattern, size_t bufsize);
62 void enable_crypt(int fd, crypt_function *recv_f, crypt_function *send_f,
64 void disable_crypt(int fd);
67 * A wrapper around connect(2).
69 * \param fd The file descriptor.
70 * \param addr The address to connect.
71 * \param len The size of \a addr.
73 * This should not be called directly. Always use the PARA_CONNECT macro.
75 * \return \p -E_CONNECT on errors, 1 on success.
77 * \sa connect(2), PARA_CONNECT.
79 static inline int _para_connect(int fd, void *addr, socklen_t len)
81 if (connect(fd, (struct sockaddr *)addr, len) == -1)
86 /** A macro for connect() which does not need a \a len parameter. */
87 #define PARA_CONNECT(fd, addr) _para_connect(fd, addr, sizeof(*(addr)))