net.h

   1 /*
   2  * Copyright (C) 2006-2007 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 /** used to crypt the communication between para_server and para_client */
  20 typedef void crypt_function(unsigned long len,
  21         const unsigned char *indata, unsigned char *outdata, void *private_data);
  22
  23 #include <netdb.h> /* hostent */
  24 int get_host_info(char *host, struct hostent **ret);
  25 int get_stream_socket(int domain);
  26 void init_sockaddr(struct sockaddr_in*, int, const struct hostent*);
  27 int send_buffer(int, const char *);
  28 int send_bin_buffer(int, const char *, size_t);
  29 __printf_2_3 int send_va_buffer(int fd, const char *fmt, ...);
  30 int recv_buffer(int fd, char *buf, size_t size);
  31 int recv_bin_buffer(int fd, char *buf, size_t size);
  32 int para_accept(int, void *addr, socklen_t size);
  33 int create_local_socket(const char *name, struct sockaddr_un *unix_addr,
  34         mode_t mode);
  35 int init_unix_addr(struct sockaddr_un *, const char *);
  36 int recv_cred_buffer(int, char *, size_t);
  37 ssize_t send_cred_buffer(int, char*);
  38 int recv_pattern(int fd, const char *pattern, size_t bufsize);
  39 int init_tcp_socket(int port);
  40 void enable_crypt(int fd, crypt_function *recv_f, crypt_function *send_f,
  41         void *private_data);
  42 void disable_crypt(int fd);
  43
  44 /**
  45  * A wrapper around connect(2).
  46  *
  47  * \param fd The file descriptor.
  48  * \param addr The address to connect.
  49  * \param len The size of \a addr.
  50  *
  51  * This should not be called directly. Always use the PARA_CONNECT macro.
  52  *
  53  * \return \p -E_CONNECT on errors, 1 on success.
  54  *
  55  * \sa connect(2), PARA_CONNECT.
  56  */
  57 static inline int _para_connect(int fd, void *addr, socklen_t len)
  58 {
  59         if (connect(fd, (struct sockaddr *)addr, len) == -1)
  60                 return -E_CONNECT;
  61         return 1;
  62 }
  63
  64 /** A macro for connect() which does not need a \a len parameter. */
  65 #define PARA_CONNECT(fd, addr) _para_connect(fd, addr, sizeof(*(addr)))