Bump copyright year to 2023.

[paraslash.git] / net.h

diff --git a/net.h b/net.h
index 5ff53987af6591e6192ae034fe6270fbb29df01b..d206881c587b8ec185856e23e84bb26ecf032f45 100644 (file)
--- a/net.h
+++ b/net.h
@@ -1,55 +1,82 @@
-/*
- * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.org>
- *
- *     This program is free software; you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation; either version 2 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program; if not, write to the Free Software
- *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+/* Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
+/** \file net.h exported symbols from net.c */
+
+/* Userland defines for Linux DCCP support. */
+
+#ifndef SOL_DCCP
+#define SOL_DCCP 269 /**< Linux socket level. */
+#endif
+
+/** The maximum length of the host component in an URL. */
+#define MAX_HOSTLEN 256
+
+/* Opaque, only known to net.c. */
+struct flowopts;
+
+struct flowopts *flowopt_new(void);
+void flowopt_add(struct flowopts *fo, int level, int opt,
+               const char *name, const void *val, int len);
+void flowopt_cleanup(struct flowopts *fo);
+
+/**
+ * Functions to parse and validate (parts of) URLs.
  */
+char *parse_cidr(const char *cidr,
+               char *addr, ssize_t addrlen, int32_t *netmask);
+char *parse_url(const char *url,
+               char *host, ssize_t hostlen, int32_t *port);
+char *format_url(const char *url, int default_port);
+const char *stringify_port(int port, const char *transport);
 
-/** \file net.h exported symbols from net.c */
+int lookup_address(unsigned l4type, bool passive, const char *host,
+               int port_number, struct addrinfo **result);
 
 /**
- * the buffer size of the sun_path component of struct sockaddr_un
- *
- * While glibc doesn't define \p UNIX_PATH_MAX, it
- * documents it has being limited to 108 bytes.
+ * Generic socket creation (passive and active sockets).
  */
-#ifndef UNIX_PATH_MAX
-#define UNIX_PATH_MAX 108
-#endif
+int makesock(unsigned l4type, bool passive, const char *host,
+               uint16_t port_number, struct flowopts *fo);
+
+int makesock_addrinfo(unsigned l4type, bool passive, struct addrinfo *ai,
+               struct flowopts *fo);
+
+static inline int para_connect(unsigned l4type, const char *host, uint16_t port)
+{
+       return makesock(l4type, false, host, port, NULL);
+}
 
-/** 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);
-
-#include <netdb.h> /* hostent */
-int get_host_info(char *host, struct hostent **ret);
-int get_socket(void);
-void init_sockaddr(struct sockaddr_in*, int, const struct hostent*);
-int para_connect(int, struct sockaddr_in *);
-int send_buffer(int, const char *);
-int send_bin_buffer(int, const char *, size_t);
-int send_va_buffer(int, const char *, ...);
-int recv_buffer(int, char *, ssize_t);
-int recv_bin_buffer(int, char *, ssize_t);
-int para_accept(int, void *addr, socklen_t size);
-int create_pf_socket(const char *, struct sockaddr_un *, int mod);
-int init_unix_addr(struct sockaddr_un *, const char *);
+void extract_v4_addr(const struct sockaddr_storage *ss, struct in_addr *ia);
+bool sockaddr_equal(const struct sockaddr *sa1, const struct sockaddr *sa2);
+
+/**
+ * Functions to support listening sockets.
+ */
+/** How many pending connections queue of a listening server will hold. */
+#define BACKLOG        10
+
+int para_listen(unsigned l4type, const char *addr, uint16_t port);
+int para_listen_simple(unsigned l4type, uint16_t port);
+
+/** Pretty-printing of IPv4/6 socket addresses */
+char *remote_name(int sockfd);
+
+/**
+ * Determining maximum payload (packet) size
+ */
+int generic_max_transport_msg_size(int sockfd);
+
+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 fd, void *addr, socklen_t size, int *new_fd);
+int create_local_socket(const char *name);
+int connect_local_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 init_tcp_socket(int port);
-void enable_crypt(int fd, crypt_function *recv_f, crypt_function *send_f,
-       void *private_data);
-void disable_crypt(int fd);
 
+/**
+ * Functions and definitions to support \p IPPROTO_DCCP
+ */
+/** Hardcoded maximum number of separate CCID modules compiled into a host. */
+#define DCCP_MAX_HOST_CCIDS    20
+int dccp_available_ccids(uint8_t **ccid_array);