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# include <sys/socket.h>
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# include <netinet/in.h>
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# include <arpa/inet.h>
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# define AF_INET6 PF_INET6
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unsigned short family;
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ARRAY_DEFINE_TYPE(ip_addr, struct ip_addr);
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struct net_unix_cred {
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/* maxmimum string length of IP address */
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# define MAX_IP_LEN INET6_ADDRSTRLEN
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# define MAX_IP_LEN 20
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# define EAI_NONAME NO_ADDRESS
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# define EAI_FAIL NO_RECOVERY
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#define IPADDR_IS_V4(ip) ((ip)->family == AF_INET)
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#define IPADDR_IS_V6(ip) ((ip)->family == AF_INET6)
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#define IPADDR_BITS(ip) (IPADDR_IS_V4(ip) ? 32 : 128)
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/* Returns TRUE if IPs are the same */
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bool net_ip_compare(const struct ip_addr *ip1, const struct ip_addr *ip2);
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/* Returns 0 if IPs are the same, -1 or 1 otherwise. */
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int net_ip_cmp(const struct ip_addr *ip1, const struct ip_addr *ip2);
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unsigned int net_ip_hash(const struct ip_addr *ip);
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/* Connect to socket with ip address. The socket and connect() is
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int net_connect_ip(const struct ip_addr *ip, unsigned int port,
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const struct ip_addr *my_ip) ATTR_NULL(3);
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/* Like net_connect_ip(), but do a blocking connect(). */
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int net_connect_ip_blocking(const struct ip_addr *ip, unsigned int port,
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const struct ip_addr *my_ip) ATTR_NULL(3);
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/* Returns 0 if we can bind() as given IP, -1 if not. */
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int net_try_bind(const struct ip_addr *ip);
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/* Connect to named UNIX socket */
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int net_connect_unix(const char *path);
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/* Try to connect to UNIX socket for give number of seconds when connect()
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returns EAGAIN or ECONNREFUSED. */
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int net_connect_unix_with_retries(const char *path, unsigned int msecs);
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/* Disconnect socket */
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void net_disconnect(int fd);
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/* Set socket blocking/nonblocking */
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void net_set_nonblock(int fd, bool nonblock);
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/* Set TCP_CORK if supported, ie. don't send out partial frames.
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Returns 0 if ok, -1 if failed. */
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int net_set_cork(int fd, bool cork) ATTR_NOWARN_UNUSED_RESULT;
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/* Set IP to contain INADDR_ANY for IPv4 or IPv6. The IPv6 any address may
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include IPv4 depending on the system (Linux yes, BSD no). */
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void net_get_ip_any4(struct ip_addr *ip);
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void net_get_ip_any6(struct ip_addr *ip);
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/* Listen for connections on a socket */
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int net_listen(const struct ip_addr *my_ip, unsigned int *port, int backlog);
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/* Listen for connections on an UNIX socket */
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int net_listen_unix(const char *path, int backlog);
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/* Like net_listen_unix(), but if socket already exists, try to connect to it.
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If it fails with ECONNREFUSED, unlink the socket and try creating it
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int net_listen_unix_unlink_stale(const char *path, int backlog);
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/* Accept a connection on a socket. Returns -1 if the connection got closed,
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-2 for other failures. For UNIX sockets addr_r->family=port=0. */
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int net_accept(int fd, struct ip_addr *addr_r, unsigned int *port_r)
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/* Read data from socket, return number of bytes read,
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-1 = error, -2 = disconnected */
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ssize_t net_receive(int fd, void *buf, size_t len);
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/* Transmit data, return number of bytes sent, -1 = error, -2 = disconnected */
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ssize_t net_transmit(int fd, const void *data, size_t len);
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/* Get IP addresses for host. ips contains ips_count of IPs, they don't need
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to be free'd. Returns 0 = ok, others = error code for net_gethosterror() */
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int net_gethostbyname(const char *addr, struct ip_addr **ips,
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unsigned int *ips_count);
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/* Return host for the IP address. Returns 0 = ok, others = error code for
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net_gethosterror(). */
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int net_gethostbyaddr(const struct ip_addr *ip, const char **name_r);
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/* get error of net_gethostname() */
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const char *net_gethosterror(int error) ATTR_CONST;
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/* return TRUE if host lookup failed because it didn't exist (ie. not
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some error with name server) */
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int net_hosterror_notfound(int error) ATTR_CONST;
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/* Get socket local address/port. For UNIX sockets addr->family=port=0. */
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int net_getsockname(int fd, struct ip_addr *addr, unsigned int *port)
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/* Get socket remote address/port. For UNIX sockets addr->family=port=0. */
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int net_getpeername(int fd, struct ip_addr *addr, unsigned int *port)
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/* Get UNIX socket name. */
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int net_getunixname(int fd, const char **name_r);
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/* Get UNIX socket peer process's credentials. The pid may be (pid_t)-1 if
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int net_getunixcred(int fd, struct net_unix_cred *cred_r);
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/* Returns ip_addr as string, or NULL if ip is invalid. */
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const char *net_ip2addr(const struct ip_addr *ip);
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/* char* -> struct ip_addr translation. */
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int net_addr2ip(const char *addr, struct ip_addr *ip);
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/* Convert IPv6 mapped IPv4 address to an actual IPv4 address. Returns 0 if
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successful, -1 if the source address isn't IPv6 mapped IPv4 address. */
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int net_ipv6_mapped_ipv4_convert(const struct ip_addr *src,
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struct ip_addr *dest);
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/* Get socket error */
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int net_geterror(int fd);
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/* Get name of TCP service */
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const char *net_getservbyport(unsigned short port) ATTR_CONST;
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bool is_ipv4_address(const char *addr) ATTR_PURE;
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bool is_ipv6_address(const char *addr) ATTR_PURE;
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/* Parse network as ip/bits. Returns 0 if successful, -1 if invalid input. */
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int net_parse_range(const char *network, struct ip_addr *ip_r,
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unsigned int *bits_r);
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/* Returns TRUE if ip is in net_ip/bits network. IPv6 mapped IPv4 addresses
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are converted to plain IPv4 addresses before matching. Invalid IPs
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(family=0) never match anything. */
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bool net_is_in_network(const struct ip_addr *ip, const struct ip_addr *net_ip,
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unsigned int bits) ATTR_PURE;
added
removed
src/lib/net.h
