Merge commit 'fml/master' into next
[paraslash.git] / net.h
1 /*
2 * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6 #include <stdbool.h>
7
8 /** \file net.h exported symbols from net.c */
9
10 /**
11 * the buffer size of the sun_path component of struct sockaddr_un
12 *
13 * While glibc doesn't define \p UNIX_PATH_MAX, it
14 * documents it has being limited to 108 bytes.
15 */
16 #ifndef UNIX_PATH_MAX
17 #define UNIX_PATH_MAX 108
18 #endif
19
20 /** \cond Userland defines for Linux DCCP support. */
21 #ifndef IPPROTO_DCCP
22 #define IPPROTO_DCCP 33 /**< IANA assigned value */
23 #define SOCK_DCCP 6 /**< Linux socket type */
24 #define SOL_DCCP 269 /**< Linux socket level */
25 #endif
26 /** \endcond */
27
28
29 /**
30 * Functions to parse and validate (parts of) URLs.
31 */
32 extern char *parse_cidr(const char *cidr,
33 char *addr, ssize_t addrlen, int32_t *netmask);
34 extern char *parse_url(const char *url,
35 char *host, ssize_t hostlen, int32_t *port);
36 /**
37 * Ensure that string conforms to the IPv4 address format.
38 *
39 * \param address The address string to check.
40 *
41 * \return 1 if \a address conforms to the IPv4 address format, else 0.
42 */
43 _static_inline_ bool is_valid_ipv4_address(const char *address)
44 {
45 struct in_addr test_it;
46
47 return inet_pton(AF_INET, address, &test_it) != 0;
48 }
49
50 /**
51 * Ensure that string conforms to IPv6 address format.
52 *
53 * \param address The address string to check.
54 *
55 * \return 1 if string has a valid IPv6 address syntax, 0 if not.
56 * \sa RFC 4291
57 */
58 _static_inline_ bool is_valid_ipv6_address(const char *address)
59 {
60 struct in6_addr test_it;
61
62 return inet_pton(AF_INET6, address, &test_it) != 0;
63 }
64
65 /**
66 * Generic socket creation (passive and active sockets).
67 */
68 extern int makesock(unsigned l3type, unsigned l4type, int passive,
69 const char *host, unsigned short port_number);
70 extern struct in_addr extract_v4_addr(const struct sockaddr_storage *ss);
71
72 /**
73 * Functions to support listening sockets.
74 */
75 /** How many pending connections queue of a listening server will hold. */
76 #define BACKLOG 10
77 extern int para_listen(unsigned l3type, unsigned l4type, unsigned short port);
78
79 /** Pretty-printing of IPv4/6 socket addresses */
80 extern char *local_name(int sockfd);
81 extern char *remote_name(int sockfd);
82
83 int send_bin_buffer(int, const char *, size_t);
84 int send_buffer(int, const char *);
85 __printf_2_3 int send_va_buffer(int fd, const char *fmt, ...);
86
87 int recv_bin_buffer(int fd, char *buf, size_t size);
88 int recv_buffer(int fd, char *buf, size_t size);
89
90 int para_accept(int, void *addr, socklen_t size);
91 int create_local_socket(const char *name, struct sockaddr_un *unix_addr,
92 mode_t mode);
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);