common/tftpsubs.h

   1 /*
   2  * Copyright (c) 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * Prototypes for read-ahead/write-behind subroutines for tftp user and
  36  * server.
  37  */
  38 #ifndef TFTPSUBS_H
  39 #define TFTPSUBS_H
  40
  41 #include "config.h"
  42
  43 union sock_addr {
  44     struct sockaddr     sa;
  45     struct sockaddr_in  si;
  46 #ifdef HAVE_IPV6
  47     struct sockaddr_in6 s6;
  48 #endif
  49 };
  50
  51 #define SOCKLEN(sock) \
  52     (((union sock_addr*)sock)->sa.sa_family == AF_INET ? \
  53     (sizeof(struct sockaddr_in)) : \
  54     (sizeof(union sock_addr)))
  55
  56 #ifdef HAVE_IPV6
  57 #define SOCKPORT(sock) \
  58     (((union sock_addr*)sock)->sa.sa_family == AF_INET ? \
  59     ((union sock_addr*)sock)->si.sin_port : \
  60     ((union sock_addr*)sock)->s6.sin6_port)
  61 #else
  62 #define SOCKPORT(sock) \
  63     (((union sock_addr*)sock)->si.sin_port)
  64 #endif
  65
  66 #ifdef HAVE_IPV6
  67 #define SOCKADDR_P(sock) \
  68     (((union sock_addr*)sock)->sa.sa_family == AF_INET ? \
  69     (void *)&((union sock_addr*)sock)->si.sin_addr : \
  70     (void *)&((union sock_addr*)sock)->s6.sin6_addr)
  71 #else
  72 #define SOCKADDR_P(sock) \
  73     (void *)&((union sock_addr*)sock)->si.sin_addr
  74 #endif
  75
  76 #ifdef HAVE_IPV6
  77 int is_numeric_ipv6(const char *);
  78 char *strip_address(char *);
  79 #else
  80 #define is_numeric_ipv6(a)      0
  81 #define strip_address(a)        (a)
  82 #endif
  83
  84 static inline int sa_set_port(union sock_addr *s, u_short port)
  85 {
  86        switch (s->sa.sa_family) {
  87        case AF_INET:
  88                s->si.sin_port = port;
  89                break;
  90 #ifdef HAVE_IPV6
  91        case AF_INET6:
  92                s->s6.sin6_port = port;
  93                break;
  94 #endif
  95        default:
  96                return -1;
  97        }
  98        return 0;
  99 }
 100
 101 int set_sock_addr(char *, union sock_addr *, char **);
 102
 103 struct tftphdr;
 104
 105 struct tftphdr *r_init(void);
 106 void read_ahead(FILE *, int);
 107 int readit(FILE *, struct tftphdr **, int);
 108
 109 int synchnet(int);
 110
 111 struct tftphdr *w_init(void);
 112 int write_behind(FILE *, int);
 113 int writeit(FILE *, struct tftphdr **, int, int);
 114
 115 extern int segsize;
 116 #define MAX_SEGSIZE     65464
 117
 118 int pick_port_bind(int sockfd, union sock_addr *myaddr,
 119                    unsigned int from, unsigned int to);
 120
 121 #endif