Lorenzo Colitti | 313379e | 2013-07-11 01:07:11 +0900 | [diff] [blame] | 1 | /* $USAGI: ninfod.h,v 1.20 2002-12-19 15:51:16 yoshfuji Exp $ */ |
| 2 | /* |
| 3 | * Copyright (C) 2002 USAGI/WIDE Project. |
| 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 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. Neither the name of the project nor the names of its contributors |
| 15 | * may be used to endorse or promote products derived from this software |
| 16 | * without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 | * SUCH DAMAGE. |
| 29 | */ |
| 30 | /* |
| 31 | * Author: |
| 32 | * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> |
| 33 | */ |
| 34 | |
| 35 | /* definitions */ |
| 36 | #define NINFOD "ninfod" |
| 37 | #define NINFOD_PIDFILE "/var/run/ninfod.pid" |
| 38 | |
| 39 | #define MAX_ANYCAST_DELAY_TIME 1000000.0 /* 1 sec */ |
| 40 | |
| 41 | #define MAX_DNSLABEL_SIZE 63 |
| 42 | #define MAX_DNSNAME_SIZE 255 |
| 43 | #define MAX_QUERY_SIZE (sizeof(struct icmp6_nodeinfo)+MAX_DNSNAME_SIZE+2) |
| 44 | #define MAX_REPLY_SIZE 1280-sizeof(struct ip6_hdr) |
| 45 | |
| 46 | #define MAX_SUPTYPES 32 |
| 47 | |
| 48 | #define CHECKANDFILL_ARGS struct packetcontext *p,\ |
| 49 | char *subject, size_t subjlen, \ |
| 50 | unsigned int flags, \ |
| 51 | unsigned int *subj_if, \ |
| 52 | int reply |
| 53 | #define INIT_ARGS \ |
| 54 | int forced |
| 55 | |
| 56 | struct packetcontext { |
| 57 | /* socket */ |
| 58 | int sock; |
| 59 | |
| 60 | /* query info */ |
| 61 | struct sockaddr_storage addr; |
| 62 | socklen_t addrlen; |
| 63 | struct in6_pktinfo pktinfo; |
| 64 | char query[MAX_QUERY_SIZE]; |
| 65 | int querylen; |
| 66 | |
| 67 | /* reply info */ |
| 68 | struct icmp6_nodeinfo reply; /* common */ |
| 69 | char *replydata; /* data */ |
| 70 | int replydatalen; |
| 71 | |
| 72 | unsigned int delay; /* (random) delay */ |
| 73 | }; |
| 74 | |
| 75 | /* variables */ |
| 76 | extern int opt_v; /* ninfod.c */ |
| 77 | extern int daemonized; /* ninfod.c */ |
| 78 | extern int sock; /* ninfod.c */ |
| 79 | extern int initialized; /* ninfod_core.c */ |
| 80 | |
| 81 | /* ninfod.c* */ |
| 82 | int ni_recv(struct packetcontext *p); |
| 83 | int ni_send(struct packetcontext *p); |
| 84 | |
| 85 | /* ninfod_core.c */ |
| 86 | #if ENABLE_DEBUG |
| 87 | void stderrlog(int priority, char *format, ...); |
| 88 | # define DEBUG(pri, fmt, args...) do { \ |
| 89 | int saved_errno = errno; \ |
| 90 | if (opt_v || pri != LOG_DEBUG) { \ |
| 91 | if (daemonized) { \ |
| 92 | syslog(pri, fmt, ## args); \ |
| 93 | } else { \ |
| 94 | stderrlog(pri, fmt, ## args); \ |
| 95 | } \ |
| 96 | } \ |
| 97 | errno = saved_errno; \ |
| 98 | } while(0) |
| 99 | #else |
| 100 | # define DEBUG(pri, fmt, args...) do { ; } while(0) |
| 101 | #endif |
| 102 | |
| 103 | #define ni_malloc(size) ({ \ |
| 104 | size_t _size = (size); \ |
| 105 | void *p = malloc(_size); \ |
| 106 | DEBUG(LOG_DEBUG, "%s(): malloc(%zu) = %p\n", __func__, _size, p); \ |
| 107 | p; \ |
| 108 | }) |
| 109 | #define ni_free(p) ({ \ |
| 110 | void *_p = (p); \ |
| 111 | int saved_errno = errno; \ |
| 112 | DEBUG(LOG_DEBUG, "%s(): free(%p)\n", __func__, _p); \ |
| 113 | free(_p); \ |
| 114 | errno = saved_errno; \ |
| 115 | }) |
| 116 | |
| 117 | void init_core(int forced); |
| 118 | int pr_nodeinfo(struct packetcontext *p); |
| 119 | |
| 120 | int pr_nodeinfo_unknown(CHECKANDFILL_ARGS); |
| 121 | int pr_nodeinfo_refused(CHECKANDFILL_ARGS); |
| 122 | int pr_nodeinfo_noop(CHECKANDFILL_ARGS); |
| 123 | void init_nodeinfo_suptypes(INIT_ARGS); |
| 124 | int pr_nodeinfo_suptypes(CHECKANDFILL_ARGS); |
| 125 | |
| 126 | /* ninfod_addrs.c */ |
| 127 | void init_nodeinfo_ipv6addr(INIT_ARGS); |
| 128 | int pr_nodeinfo_ipv6addr(CHECKANDFILL_ARGS); |
| 129 | void init_nodeinfo_ipv4addr(INIT_ARGS); |
| 130 | int pr_nodeinfo_ipv4addr(CHECKANDFILL_ARGS); |
| 131 | |
| 132 | /* ninfod_name.c */ |
| 133 | int check_nigroup(const struct in6_addr *addr); |
| 134 | void init_nodeinfo_nodename(INIT_ARGS); |
| 135 | int pr_nodeinfo_nodename(CHECKANDFILL_ARGS); |
| 136 | |