The Tcpdump Group git mirrors - libpcap/blob - sockutils.h

   1 /*
   2  * Copyright (c) 2002 - 2003
   3  * NetGroup, Politecnico di Torino (Italy)
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  * notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  * notice, this list of conditions and the following disclaimer in the
  14  * documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the Politecnico di Torino nor the names of its
  16  * contributors may be used to endorse or promote products derived from
  17  * this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  */
  32
  33 #ifndef __SOCKUTILS_H__
  34 #define __SOCKUTILS_H__
  35
  36 #ifdef _MSC_VER
  37 #pragma once
  38 #endif
  39
  40 #include "pcap/socket.h"
  41
  42 #ifndef _WIN32
  43   /* UN*X */
  44   #include <unistd.h>   /* close() */
  45
  46   /*!
  47    * \brief In Winsock, the close() call cannot be used on a socket;
  48    * closesocket() must be used.
  49    * We define closesocket() to be a wrapper around close() on UN*X,
  50    * so that it can be used on both platforms.
  51    */
  52   #define closesocket(a) close(a)
  53 #endif
  54
  55 #include "sslutils.h"  // for SSL type, whatever that turns out to be
  56
  57 /*
  58  * MingW headers include this definition, but only for Windows XP and above.
  59  * MSDN states that this function is available for most versions on Windows.
  60  */
  61 #if ((defined(__MINGW32__)) && (_WIN32_WINNT < 0x0501))
  62 int WSAAPI getnameinfo(const struct sockaddr*,socklen_t,char*,DWORD,
  63         char*,DWORD,int);
  64 #endif
  65
  66 /*
  67  * \defgroup SockUtils Cross-platform socket utilities (IPv4-IPv6)
  68  */
  69
  70 /*
  71  * \addtogroup SockUtils
  72  * \{
  73  */
  74
  75 /*
  76  * \defgroup ExportedStruct Exported Structures and Definitions
  77  */
  78
  79 /*
  80  * \addtogroup ExportedStruct
  81  * \{
  82  */
  83
  84 /****************************************************
  85  *                                                  *
  86  * Exported functions / definitions                 *
  87  *                                                  *
  88  ****************************************************/
  89
  90 /* 'checkonly' flag, into the rpsock_bufferize() */
  91 #define SOCKBUF_CHECKONLY 1
  92 /* no 'checkonly' flag, into the rpsock_bufferize() */
  93 #define SOCKBUF_BUFFERIZE 0
  94
  95 /* no 'server' flag; it opens a client socket */
  96 #define SOCKOPEN_CLIENT 0
  97 /* 'server' flag; it opens a server socket */
  98 #define SOCKOPEN_SERVER 1
  99
 100 /*
 101  * Flags for sock_recv().
 102  */
 103 #define SOCK_RECEIVEALL_NO      0x00000000      /* Don't wait to receive all data */
 104 #define SOCK_RECEIVEALL_YES     0x00000001      /* Wait to receive all data */
 105
 106 #define SOCK_EOF_ISNT_ERROR     0x00000000      /* Return 0 on EOF */
 107 #define SOCK_EOF_IS_ERROR       0x00000002      /* Return an error on EOF */
 108
 109 #define SOCK_MSG_PEEK           0x00000004      /* Return data but leave it in the socket queue */
 110
 111 /*
 112  * \}
 113  */
 114
 115 #ifdef __cplusplus
 116 extern "C" {
 117 #endif
 118
 119 /*
 120  * \defgroup ExportedFunc Exported Functions
 121  */
 122
 123 /*
 124  * \addtogroup ExportedFunc
 125  * \{
 126  */
 127
 128 int sock_init(char *errbuf, int errbuflen);
 129 void sock_cleanup(void);
 130 void sock_fmterror(const char *caller, int errcode, char *errbuf, int errbuflen);
 131 void sock_geterror(const char *caller, char *errbuf, int errbufsize);
 132 int sock_initaddress(const char *address, const char *port,
 133     struct addrinfo *hints, struct addrinfo **addrinfo,
 134     char *errbuf, int errbuflen);
 135 int sock_recv(SOCKET sock, SSL *, void *buffer, size_t size, int receiveall,
 136     char *errbuf, int errbuflen);
 137 int sock_recv_dgram(SOCKET sock, SSL *, void *buffer, size_t size,
 138     char *errbuf, int errbuflen);
 139 SOCKET sock_open(struct addrinfo *addrinfo, int server, int nconn, char *errbuf, int errbuflen);
 140 int sock_close(SOCKET sock, char *errbuf, int errbuflen);
 141
 142 int sock_send(SOCKET sock, SSL *, const char *buffer, size_t size,
 143     char *errbuf, int errbuflen);
 144 int sock_bufferize(const char *buffer, int size, char *tempbuf, int *offset, int totsize, int checkonly, char *errbuf, int errbuflen);
 145 int sock_discard(SOCKET sock, SSL *, int size, char *errbuf, int errbuflen);
 146 int     sock_check_hostlist(char *hostlist, const char *sep, struct sockaddr_storage *from, char *errbuf, int errbuflen);
 147 int sock_cmpaddr(struct sockaddr_storage *first, struct sockaddr_storage *second);
 148
 149 int sock_getmyinfo(SOCKET sock, char *address, int addrlen, char *port, int portlen, int flags, char *errbuf, int errbuflen);
 150
 151 int sock_getascii_addrport(const struct sockaddr_storage *sockaddr, char *address, int addrlen, char *port, int portlen, int flags, char *errbuf, int errbuflen);
 152 int sock_present2network(const char *address, struct sockaddr_storage *sockaddr, int addr_family, char *errbuf, int errbuflen);
 153
 154 #ifdef __cplusplus
 155 }
 156 #endif
 157
 158 /*
 159  * \}
 160  */
 161
 162 /*
 163  * \}
 164  */
 165
 166 #endif