2 * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
8 /** \file net.h exported symbols from net.c */
11 * the buffer size of the sun_path component of struct sockaddr_un
13 * While glibc doesn't define \p UNIX_PATH_MAX, it
14 * documents it has being limited to 108 bytes.
17 #define UNIX_PATH_MAX 108
20 /** \cond Userland defines for Linux DCCP support. */
22 #define IPPROTO_DCCP 33 /**< IANA assigned value */
23 #define SOCK_DCCP 6 /**< Linux socket type */
24 #define SOL_DCCP 269 /**< Linux socket level */
30 * Functions to parse and validate (parts of) URLs.
32 extern char *parse_url(const char *url
,
33 char *host
, ssize_t hostlen
, int32_t *port
);
35 * Ensure that string conforms to the IPv4 address format.
37 * \param address The address string to check.
39 * \return 1 if \a address conforms to the IPv4 address format, else 0.
41 _static_inline_
bool is_valid_ipv4_address(const char *address
)
43 struct in_addr test_it
;
45 return inet_pton(AF_INET
, address
, &test_it
) != 0;
49 * Ensure that string conforms to IPv6 address format.
51 * \param address The address string to check.
53 * \return 1 if string has a valid IPv6 address syntax, 0 if not.
56 _static_inline_
bool is_valid_ipv6_address(const char *address
)
58 struct in6_addr test_it
;
60 return inet_pton(AF_INET6
, address
, &test_it
) != 0;
64 * Generic socket creation (passive and active sockets).
66 extern int makesock(unsigned l3type
, unsigned l4type
, int passive
,
67 const char *host
, unsigned short port_number
);
68 extern struct in_addr
extract_v4_addr(const struct sockaddr_storage
*ss
);
71 * Functions to support listening sockets.
73 /** How many pending connections queue of a listening server will hold. */
75 extern int para_listen(unsigned l3type
, unsigned l4type
, unsigned short port
);
77 /** Pretty-printing of IPv4/6 socket addresses */
78 extern char *local_name(int sockfd
);
79 extern char *remote_name(int sockfd
);
81 /** used to crypt the communication between para_server and para_client */
82 typedef void crypt_function(unsigned long len
,
83 const unsigned char *indata
, unsigned char *outdata
, void *private_data
);
85 int send_buffer(int, const char *);
86 int send_bin_buffer(int, const char *, size_t);
87 __printf_2_3
int send_va_buffer(int fd
, const char *fmt
, ...);
88 int recv_buffer(int fd
, char *buf
, size_t size
);
89 int recv_bin_buffer(int fd
, char *buf
, size_t size
);
90 int para_accept(int, void *addr
, socklen_t size
);
91 int create_local_socket(const char *name
, struct sockaddr_un
*unix_addr
,
93 int create_remote_socket(const char *name
);
94 int recv_cred_buffer(int, char *, size_t);
95 ssize_t
send_cred_buffer(int, char*);
96 int recv_pattern(int fd
, const char *pattern
, size_t bufsize
);
97 void enable_crypt(int fd
, crypt_function
*recv_f
, crypt_function
*send_f
,
99 void disable_crypt(int fd
);