net.h

   1 /*
   2  * Copyright (C) 2006-2008 Andre Noll <maan@systemlinux.org>
   3  *
   4  * Licensed under the GPL v2. For licencing details see COPYING.
   5  */
   6
   7 /** \file net.h exported symbols from net.c */
   8
   9 /**
  10  * the buffer size of the sun_path component of struct sockaddr_un
  11  *
  12  * While glibc doesn't define \p UNIX_PATH_MAX, it
  13  * documents it has being limited to 108 bytes.
  14  */
  15 #ifndef UNIX_PATH_MAX
  16 #define UNIX_PATH_MAX 108
  17 #endif
  18
  19 /** \cond Userland defines for Linux DCCP support. */
  20 #ifndef IPPROTO_DCCP
  21 #define IPPROTO_DCCP    33      /**< IANA assigned value */
  22 #define SOCK_DCCP       6       /**< Linux socket type   */
  23 #define SOL_DCCP        269     /**< Linux socket level  */
  24 #endif
  25 /** \endcond */
  26
  27 /**
  28  * Generic socket creation (passive and active sockets).
  29  */
  30 extern int makesock(unsigned l3type, unsigned l4type, int passive,
  31                     const char *host, unsigned short port_number);
  32 extern struct in_addr extract_v4_addr(const struct sockaddr_storage *ss);
  33
  34 /**
  35  * Functions to support listening sockets.
  36  */
  37 /** How many pending connections queue of a listening server will hold. */
  38 #define BACKLOG 10
  39 extern int para_listen(unsigned l3type, unsigned l4type, unsigned short port);
  40
  41 /** Pretty-printing of IPv4/6 socket addresses */
  42 extern char *local_name(int sockfd);
  43 extern char *remote_name(int sockfd);
  44
  45 /** used to crypt the communication between para_server and para_client */
  46 typedef void crypt_function(unsigned long len,
  47         const unsigned char *indata, unsigned char *outdata, void *private_data);
  48
  49 int send_buffer(int, const char *);
  50 int send_bin_buffer(int, const char *, size_t);
  51 __printf_2_3 int send_va_buffer(int fd, const char *fmt, ...);
  52 int recv_buffer(int fd, char *buf, size_t size);
  53 int recv_bin_buffer(int fd, char *buf, size_t size);
  54 int para_accept(int, void *addr, socklen_t size);
  55 int create_local_socket(const char *name, struct sockaddr_un *unix_addr,
  56         mode_t mode);
  57 int create_remote_socket(const char *name);
  58 int recv_cred_buffer(int, char *, size_t);
  59 ssize_t send_cred_buffer(int, char*);
  60 int recv_pattern(int fd, const char *pattern, size_t bufsize);
  61 void enable_crypt(int fd, crypt_function *recv_f, crypt_function *send_f,
  62         void *private_data);
  63 void disable_crypt(int fd);