[2811] | 1 | //nnode.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
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| 5 | * |
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| 6 | * This file is part of libroar a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroar is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | * NOTE for everyone want's to change something and send patches: |
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| 24 | * read README and HACKING! There a addition information on |
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| 25 | * the license of this document you need to read before you send |
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| 26 | * any patches. |
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| 27 | * |
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| 28 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 29 | * or libpulse*: |
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| 30 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 31 | * and are therefore GPL. Because of this it may be illigal to use |
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| 32 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 33 | */ |
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| 34 | |
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| 35 | #include "libroar.h" |
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| 36 | |
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| 37 | #define _CHECK(x) if ( (x) == NULL ) return -1 |
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| 38 | |
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| 39 | int roar_nnode_new (struct roar_nnode * nnode, int socktype) { |
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| 40 | _CHECK(nnode); |
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| 41 | |
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| 42 | memset(nnode, 0, sizeof(struct roar_nnode)); |
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| 43 | |
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| 44 | nnode->socktype = socktype; |
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| 45 | |
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| 46 | return 0; |
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| 47 | } |
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| 48 | |
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| 49 | int roar_nnode_new_from_af(struct roar_nnode * nnode, int af) { |
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| 50 | int socktype; |
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| 51 | |
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| 52 | _CHECK(nnode); |
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| 53 | |
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| 54 | switch (af) { |
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| 55 | #ifdef ROAR_HAVE_IPV4 |
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| 56 | case AF_INET: socktype = ROAR_SOCKET_TYPE_INET; break; |
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| 57 | #endif |
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| 58 | #ifdef ROAR_HAVE_IPV6 |
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| 59 | case AF_INET6: socktype = ROAR_SOCKET_TYPE_INET6; break; |
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| 60 | #endif |
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| 61 | #ifdef ROAR_HAVE_UNIX |
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| 62 | case AF_UNIX: socktype = ROAR_SOCKET_TYPE_UNIX; break; |
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| 63 | #endif |
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| 64 | #ifdef ROAR_HAVE_LIBDNET |
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| 65 | case AF_DECnet: socktype = ROAR_SOCKET_TYPE_DECNET; break; |
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| 66 | #endif |
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| 67 | #ifdef ROAR_HAVE_IPX |
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| 68 | case AF_IPX: socktype = ROAR_SOCKET_TYPE_IPX; break; |
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| 69 | #endif |
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| 70 | default: |
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| 71 | return -1; |
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| 72 | break; |
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| 73 | } |
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| 74 | |
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| 75 | if ( roar_nnode_new(nnode, socktype) == -1 ) |
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| 76 | return -1; |
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| 77 | |
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| 78 | return 0; |
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| 79 | } |
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| 80 | |
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| 81 | int roar_nnode_new_from_sockaddr(struct roar_nnode * nnode, struct sockaddr * addr, socklen_t len) { |
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| 82 | _CHECK(nnode); |
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| 83 | _CHECK(addr); |
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| 84 | |
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| 85 | ROAR_DBG("roar_nnode_new_from_sockaddr(nnode=%p, addr=%p, len=%lu) = ?", nnode, addr, (unsigned long)len); |
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| 86 | |
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| 87 | if ( len < sizeof(addr->sa_family) ) |
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| 88 | return -1; |
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| 89 | |
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| 90 | ROAR_DBG("roar_nnode_new_from_sockaddr(nnode=%p, addr=%p, len=%lu) = ?", nnode, addr, (unsigned long)len); |
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| 91 | |
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| 92 | if ( roar_nnode_new_from_af(nnode, addr->sa_family) == -1 ) |
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| 93 | return -1; |
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| 94 | |
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| 95 | ROAR_DBG("roar_nnode_new_from_sockaddr(nnode=%p, addr=%p, len=%lu) = ?", nnode, addr, (unsigned long)len); |
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| 96 | |
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| 97 | switch (addr->sa_family) { |
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| 98 | #ifdef ROAR_HAVE_IPV4 |
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| 99 | case AF_INET: |
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| 100 | if ( len < sizeof(struct sockaddr_in) ) |
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| 101 | return -1; |
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| 102 | |
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| 103 | memcpy(nnode->addr.inet4, &(((struct sockaddr_in*)addr)->sin_addr), sizeof(nnode->addr.inet4)); |
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| 104 | break; |
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| 105 | #endif |
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| 106 | #ifdef ROAR_HAVE_IPV6 |
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| 107 | case AF_INET6: |
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| 108 | if ( len < sizeof(struct sockaddr_in6) ) |
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| 109 | return -1; |
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| 110 | |
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| 111 | memcpy(nnode->addr.inet6, ((struct sockaddr_in6*)addr)->sin6_addr.s6_addr, sizeof(nnode->addr.inet6)); |
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| 112 | break; |
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| 113 | #endif |
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| 114 | #ifdef ROAR_HAVE_UNIX |
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| 115 | case AF_UNIX: |
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| 116 | // nothing to do/save here. |
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| 117 | break; |
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| 118 | #endif |
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| 119 | #ifdef ROAR_HAVE_LIBDNET |
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| 120 | case AF_DECnet: |
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| 121 | if ( len < sizeof(struct sockaddr_dn) ) |
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| 122 | return -1; |
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| 123 | |
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| 124 | nnode->addr.decnet.node = ((struct sockaddr_dn*)addr)->sdn_add.a_addr[0]; |
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| 125 | nnode->addr.decnet.node |= (((struct sockaddr_dn*)addr)->sdn_add.a_addr[1] & 0x03) << 8; |
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| 126 | nnode->addr.decnet.area = ((struct sockaddr_dn*)addr)->sdn_add.a_addr[1] >> 2; |
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| 127 | break; |
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| 128 | #endif |
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| 129 | #ifdef ROAR_HAVE_IPX |
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| 130 | case AF_IPX: |
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| 131 | return -1; |
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| 132 | break; |
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| 133 | #endif |
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| 134 | default: |
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| 135 | return -1; |
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| 136 | break; |
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| 137 | } |
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| 138 | |
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| 139 | ROAR_DBG("roar_nnode_new_from_sockaddr(nnode=%p, addr=%p, len=%lu) = 0", nnode, addr, (unsigned long)len); |
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| 140 | return 0; |
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| 141 | } |
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| 142 | |
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| 143 | int roar_nnode_free (struct roar_nnode * nnode) { |
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| 144 | _CHECK(nnode); |
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| 145 | |
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| 146 | return 0; |
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| 147 | } |
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| 148 | |
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| 149 | int roar_nnode_get_socktype (struct roar_nnode * nnode) { |
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| 150 | _CHECK(nnode); |
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| 151 | |
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| 152 | return nnode->socktype; |
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| 153 | } |
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| 154 | |
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| 155 | int roar_nnode_to_str (struct roar_nnode * nnode, char * str, size_t len) { |
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| 156 | // Format: PROTO: nodename[nodeaddr] |
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| 157 | char proto[7] = "???"; |
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| 158 | char nodename[4] = ""; |
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| 159 | char nodeaddr[48 /* IPv6 */] = "???"; |
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| 160 | |
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| 161 | _CHECK(nnode); |
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| 162 | |
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| 163 | if ( len == 0 ) |
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| 164 | return 0; |
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| 165 | |
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| 166 | _CHECK(str); |
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| 167 | |
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| 168 | if ( len == 1 ) { |
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| 169 | *str = 0; |
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| 170 | return 0; |
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| 171 | } |
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| 172 | |
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| 173 | switch (nnode->socktype) { |
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| 174 | case ROAR_SOCKET_TYPE_UNIX: |
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| 175 | strcpy(proto, "UNIX"); |
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| 176 | strcpy(nodeaddr, "LOCAL"); |
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| 177 | break; |
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| 178 | case ROAR_SOCKET_TYPE_INET: |
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| 179 | strcpy(proto, "IPv4"); |
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| 180 | sprintf(nodeaddr, "%i.%i.%i.%i", |
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| 181 | nnode->addr.inet4[0], nnode->addr.inet4[1], |
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| 182 | nnode->addr.inet4[2], nnode->addr.inet4[3] |
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| 183 | ); |
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| 184 | break; |
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| 185 | case ROAR_SOCKET_TYPE_DECNET: |
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| 186 | strcpy(proto, "DECnet"); |
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| 187 | sprintf(nodeaddr, "%i.%i", nnode->addr.decnet.area, nnode->addr.decnet.node); |
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| 188 | break; |
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| 189 | case ROAR_SOCKET_TYPE_INET6: |
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| 190 | strcpy(proto, "IPv6"); |
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| 191 | break; |
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| 192 | case ROAR_SOCKET_TYPE_IPX: |
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| 193 | strcpy(proto, "IPX"); |
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| 194 | break; |
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| 195 | default: |
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| 196 | sprintf(proto, "P#%i", nnode->socktype); |
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| 197 | break; |
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| 198 | } |
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| 199 | |
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| 200 | if ( *nodename ) { |
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| 201 | snprintf(str, len, "%s: %s[%s]", proto, nodename, nodeaddr); |
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| 202 | } else { |
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| 203 | snprintf(str, len, "%s: %s", proto, nodeaddr); |
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| 204 | } |
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| 205 | |
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| 206 | str[len-1] = 0; |
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| 207 | |
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| 208 | return 0; |
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| 209 | } |
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| 210 | |
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| 211 | int roar_nnode_from_blob (struct roar_nnode * nnode, void * blob, size_t * len) { |
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| 212 | uint16_t socktype; |
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| 213 | |
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| 214 | _CHECK(nnode); |
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| 215 | _CHECK(blob); |
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| 216 | _CHECK(len); |
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| 217 | |
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| 218 | if ( *len < 2 ) |
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| 219 | return -1; |
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| 220 | |
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| 221 | memcpy(&socktype, blob, 2); |
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| 222 | |
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| 223 | socktype = ROAR_NET2HOST16(socktype); |
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| 224 | |
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| 225 | if ( roar_nnode_new(nnode, socktype) == -1 ) |
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| 226 | return -1; |
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| 227 | |
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| 228 | switch (socktype) { |
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| 229 | case ROAR_SOCKET_TYPE_UNIX: |
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| 230 | *len = 2; |
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| 231 | break; |
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| 232 | case ROAR_SOCKET_TYPE_INET: |
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| 233 | if ( *len < 6 ) |
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| 234 | return -1; |
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| 235 | |
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| 236 | memcpy(nnode->addr.inet4, blob+2, 4); |
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| 237 | |
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| 238 | *len = 6; |
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| 239 | break; |
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| 240 | case ROAR_SOCKET_TYPE_DECNET: |
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| 241 | if ( *len < 4 ) |
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| 242 | return -1; |
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| 243 | |
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| 244 | nnode->addr.decnet.node = ((unsigned char*)blob)[2]; |
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| 245 | nnode->addr.decnet.node = (((unsigned char*)blob)[3] & 0x03) << 8; |
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| 246 | nnode->addr.decnet.area = ((unsigned char*)blob)[3] >> 2; |
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| 247 | |
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| 248 | *len = 4; |
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| 249 | break; |
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| 250 | case ROAR_SOCKET_TYPE_INET6: |
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| 251 | if ( *len < 18 ) |
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| 252 | return -1; |
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| 253 | |
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| 254 | memcpy(nnode->addr.inet4, blob+2, 16); |
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| 255 | |
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| 256 | *len = 18; |
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| 257 | break; |
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| 258 | case ROAR_SOCKET_TYPE_IPX: |
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| 259 | default: |
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| 260 | return -1; |
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| 261 | break; |
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| 262 | } |
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| 263 | |
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| 264 | return 0; |
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| 265 | } |
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| 266 | |
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| 267 | int roar_nnode_to_blob (struct roar_nnode * nnode, void * blob, size_t * len) { |
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| 268 | uint16_t socktype_net; |
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| 269 | |
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| 270 | _CHECK(nnode); |
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| 271 | _CHECK(blob); |
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| 272 | _CHECK(len); |
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| 273 | |
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| 274 | if ( *len < 2 ) |
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| 275 | return -1; |
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| 276 | |
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| 277 | socktype_net = ROAR_HOST2NET16(nnode->socktype); |
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| 278 | |
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| 279 | memcpy(blob, &socktype_net, 2); |
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| 280 | |
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| 281 | switch (nnode->socktype) { |
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| 282 | case ROAR_SOCKET_TYPE_UNIX: |
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| 283 | // all UNIX sockets allways match. |
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| 284 | *len = 2; |
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| 285 | break; |
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| 286 | case ROAR_SOCKET_TYPE_INET: |
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| 287 | if ( *len < 6 ) |
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| 288 | return -1; |
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| 289 | |
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| 290 | memcpy(blob+2, nnode->addr.inet4, 4); |
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| 291 | *len = 6; |
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| 292 | |
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| 293 | break; |
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| 294 | case ROAR_SOCKET_TYPE_DECNET: |
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| 295 | if ( *len < 4 ) |
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| 296 | return -1; |
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| 297 | |
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| 298 | ((unsigned char*)blob)[2] = nnode->addr.decnet.node & 0x00FF; |
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| 299 | ((unsigned char*)blob)[3] = ((nnode->addr.decnet.node & 0x0300) >> 8) | (nnode->addr.decnet.area << 2); |
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| 300 | *len = 4; |
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| 301 | |
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| 302 | return -1; |
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| 303 | break; |
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| 304 | case ROAR_SOCKET_TYPE_INET6: |
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| 305 | if ( *len < 18 ) |
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| 306 | return -1; |
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| 307 | |
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| 308 | memcpy(blob+2, nnode->addr.inet4, 16); |
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| 309 | *len = 18; |
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| 310 | |
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| 311 | break; |
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| 312 | case ROAR_SOCKET_TYPE_IPX: |
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| 313 | default: |
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| 314 | return -1; |
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| 315 | break; |
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| 316 | } |
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| 317 | |
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| 318 | return 0; |
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| 319 | } |
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| 320 | |
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| 321 | int roar_nnode_cmp (struct roar_nnode * n0, struct roar_nnode * n1) { |
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| 322 | _CHECK(n0); |
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| 323 | _CHECK(n1); |
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| 324 | |
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| 325 | if ( n0->socktype != n1->socktype ) |
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| 326 | return 1; |
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| 327 | |
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| 328 | switch (n0->socktype) { |
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| 329 | case ROAR_SOCKET_TYPE_UNIX: |
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| 330 | // all UNIX sockets allways match. |
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| 331 | break; |
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| 332 | case ROAR_SOCKET_TYPE_INET: |
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| 333 | if ( memcmp(n0->addr.inet4, n1->addr.inet4, sizeof(n0->addr.inet4)) != 0 ) |
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| 334 | return 1; |
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| 335 | break; |
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| 336 | case ROAR_SOCKET_TYPE_DECNET: |
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| 337 | if ( n0->addr.decnet.area != n1->addr.decnet.area || |
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| 338 | n0->addr.decnet.node != n1->addr.decnet.node ) |
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| 339 | return 1; |
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| 340 | break; |
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| 341 | case ROAR_SOCKET_TYPE_INET6: |
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| 342 | if ( memcmp(n0->addr.inet6, n1->addr.inet6, sizeof(n0->addr.inet6)) != 0 ) |
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| 343 | return 1; |
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| 344 | break; |
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| 345 | case ROAR_SOCKET_TYPE_IPX: |
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| 346 | default: |
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| 347 | return -1; |
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| 348 | break; |
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| 349 | } |
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| 350 | |
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| 351 | return 0; |
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| 352 | } |
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| 353 | |
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| 354 | //ll |
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