/*
- * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
+#include <stdbool.h>
/** \file net.h exported symbols from net.c */
/** \cond Userland defines for Linux DCCP support. */
#ifndef IPPROTO_DCCP
-#define IPPROTO_DCCP 33 /**< IANA assigned value */
-#define SOCK_DCCP 6 /**< Linux socket type */
-#define SOL_DCCP 269 /**< Linux socket level */
+#define IPPROTO_DCCP 33 /* IANA assigned value */
+#define SOCK_DCCP 6 /* Linux socket type */
+#define SOL_DCCP 269 /* Linux socket level */
+/* Per-connection CCID support (since v2.6.30-rc1) */
+#define DCCP_SOCKOPT_AVAILABLE_CCIDS 12 /* List of supported CCIDs */
+#define DCCP_SOCKOPT_CCID 13 /* Sets both TX/RX CCID */
+#define DCCP_SOCKOPT_TX_CCID 14 /* Set/get the TX CCID */
+#define DCCP_SOCKOPT_RX_CCID 15 /* Set/get the RX CCID */
#endif
/** \endcond */
+
+/**
+ * Functions to parse and validate (parts of) URLs.
+ */
+extern char *parse_cidr(const char *cidr,
+ char *addr, ssize_t addrlen, int32_t *netmask);
+extern char *parse_url(const char *url,
+ char *host, ssize_t hostlen, int32_t *port);
+extern const char *stringify_port(int port, const char *transport);
+/**
+ * Ensure that string conforms to the IPv4 address format.
+ *
+ * \param address The address string to check.
+ *
+ * \return 1 if \a address conforms to the IPv4 address format, else 0.
+ */
+_static_inline_ bool is_valid_ipv4_address(const char *address)
+{
+ struct in_addr test_it;
+
+ return inet_pton(AF_INET, address, &test_it) != 0;
+}
+
+/**
+ * Ensure that string conforms to IPv6 address format.
+ *
+ * \param address The address string to check.
+ *
+ * \return 1 if string has a valid IPv6 address syntax, 0 if not.
+ * \sa RFC 4291
+ */
+_static_inline_ bool is_valid_ipv6_address(const char *address)
+{
+ struct in6_addr test_it;
+
+ return inet_pton(AF_INET6, address, &test_it) != 0;
+}
+
/**
* Generic socket creation (passive and active sockets).
*/
extern int makesock(unsigned l3type, unsigned l4type, int passive,
const char *host, unsigned short port_number);
+extern struct in_addr extract_v4_addr(const struct sockaddr_storage *ss);
/**
* Functions to support listening sockets.
extern int para_listen(unsigned l3type, unsigned l4type, unsigned short port);
/** Pretty-printing of IPv4/6 socket addresses */
-extern char *host_and_port(struct sockaddr *sa, socklen_t len);
extern char *local_name(int sockfd);
extern char *remote_name(int sockfd);
-/** used to crypt the communication between para_server and para_client */
-typedef void crypt_function(unsigned long len,
- const unsigned char *indata, unsigned char *outdata, void *private_data);
-
-int tcp_connect(char *host, int port);
-int get_stream_socket(int domain);
-int send_buffer(int, const char *);
int send_bin_buffer(int, const char *, size_t);
+int send_buffer(int, const char *);
__printf_2_3 int send_va_buffer(int fd, const char *fmt, ...);
-int recv_buffer(int fd, char *buf, size_t size);
+
int recv_bin_buffer(int fd, char *buf, size_t size);
+int recv_buffer(int fd, char *buf, size_t size);
+
int para_accept(int, void *addr, socklen_t size);
int create_local_socket(const char *name, struct sockaddr_un *unix_addr,
mode_t mode);
-int init_unix_addr(struct sockaddr_un *, const char *);
+int create_remote_socket(const char *name);
int recv_cred_buffer(int, char *, size_t);
ssize_t send_cred_buffer(int, char*);
int recv_pattern(int fd, const char *pattern, size_t bufsize);
-int tcp_listen(int port);
-void enable_crypt(int fd, crypt_function *recv_f, crypt_function *send_f,
- void *private_data);
-void disable_crypt(int fd);
/**
- * A wrapper around connect(2).
- *
- * \param fd The file descriptor.
- * \param addr The address to connect.
- * \param len The size of \a addr.
- *
- * This should not be called directly. Always use the PARA_CONNECT macro.
- *
- * \return \p -E_CONNECT on errors, 1 on success.
- *
- * \sa connect(2), PARA_CONNECT.
+ * Functions and definitions to support \p IPPROTO_DCCP
*/
-static inline int _para_connect(int fd, void *addr, socklen_t len)
-{
- if (connect(fd, (struct sockaddr *)addr, len) == -1)
- return -E_CONNECT;
- return 1;
-}
-
-/** A macro for connect() which does not need a \a len parameter. */
-#define PARA_CONNECT(fd, addr) _para_connect(fd, addr, sizeof(*(addr)))
+/** Hardcoded maximum number of separate CCID modules compiled into a host */
+#define DCCP_MAX_HOST_CCIDS 20
+extern const uint8_t *dccp_available_ccids(uint8_t *ccids, uint8_t *nccids);