[4483] | 1 | //authfile.c: |
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| 2 | |
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| 3 | /* |
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[5823] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2013 |
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[4483] | 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, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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| 23 | * |
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| 24 | * NOTE for everyone want's to change something and send patches: |
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| 25 | * read README and HACKING! There a addition information on |
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| 26 | * the license of this document you need to read before you send |
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| 27 | * any patches. |
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| 28 | * |
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| 29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 30 | * or libpulse*: |
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| 31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 32 | * and are therefore GPL. Because of this it may be illigal to use |
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| 33 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 34 | */ |
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| 35 | |
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| 36 | #include "libroar.h" |
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| 37 | |
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[4484] | 38 | struct roar_authfile { |
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| 39 | size_t refc; |
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| 40 | size_t lockc; |
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| 41 | int type; |
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| 42 | int rw; |
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| 43 | int version; |
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| 44 | size_t magiclen; |
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| 45 | struct roar_vio_calls vio; |
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| 46 | }; |
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| 47 | |
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| 48 | struct roar_authfile * roar_authfile_open(int type, const char * filename, int rw, int version) { |
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| 49 | struct roar_vio_defaults def; |
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| 50 | struct roar_authfile * ret; |
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| 51 | size_t magiclen = 0; |
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[4942] | 52 | #if defined(ROAR_HAVE_STAT) && defined(ROAR_HAVE_H_SYS_STAT) |
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[4786] | 53 | struct stat filestat; |
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[4938] | 54 | #endif |
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[4786] | 55 | |
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| 56 | if ( type == ROAR_AUTHFILE_TYPE_AUTO ) { |
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[4942] | 57 | #if defined(ROAR_HAVE_STAT) && defined(ROAR_HAVE_H_SYS_STAT) |
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[4786] | 58 | if ( stat(filename, &filestat) != 0 ) |
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| 59 | return NULL; |
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| 60 | |
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| 61 | if ( filestat.st_size == 16 ) { |
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| 62 | type = ROAR_AUTHFILE_TYPE_ESD; |
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| 63 | } else if ( filestat.st_size == 256 ) { |
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| 64 | type = ROAR_AUTHFILE_TYPE_PULSE; |
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| 65 | } else { |
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| 66 | return NULL; |
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| 67 | } |
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[4938] | 68 | #else |
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| 69 | return NULL; |
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| 70 | #endif |
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[4786] | 71 | } |
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[4484] | 72 | |
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| 73 | switch (type) { |
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| 74 | case ROAR_AUTHFILE_TYPE_ESD: |
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| 75 | case ROAR_AUTHFILE_TYPE_PULSE: |
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| 76 | break; |
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| 77 | default: |
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| 78 | return NULL; |
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| 79 | break; |
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| 80 | } |
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| 81 | |
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| 82 | if ( roar_vio_dstr_init_defaults(&def, ROAR_VIO_DEF_TYPE_NONE, rw ? O_RDWR|O_CREAT : O_RDONLY, 0600) == -1 ) |
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| 83 | return NULL; |
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| 84 | |
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| 85 | if ( (ret = roar_mm_malloc(sizeof(struct roar_authfile))) == NULL ) |
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| 86 | return NULL; |
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| 87 | |
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| 88 | memset(ret, 0, sizeof(struct roar_authfile)); |
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| 89 | |
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| 90 | ret->refc = 1; |
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| 91 | ret->lockc = 0; |
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| 92 | ret->type = type; |
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| 93 | ret->rw = rw; |
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| 94 | ret->version = version; |
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| 95 | ret->magiclen = magiclen; |
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| 96 | |
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| 97 | filename = roar_mm_strdup(filename); |
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| 98 | |
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[5360] | 99 | if ( roar_vio_open_dstr(&(ret->vio), filename, &def, 1) == -1 ) { |
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[4484] | 100 | roar_mm_free((void*)filename); |
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| 101 | roar_mm_free(ret); |
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| 102 | return NULL; |
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| 103 | } |
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| 104 | |
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| 105 | roar_mm_free((void*)filename); |
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| 106 | |
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| 107 | return ret; |
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| 108 | } |
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| 109 | |
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| 110 | int roar_authfile_close(struct roar_authfile * authfile) { |
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| 111 | if ( authfile == NULL ) |
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| 112 | return -1; |
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| 113 | |
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| 114 | roar_vio_close(&(authfile->vio)); |
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| 115 | |
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| 116 | roar_mm_free(authfile); |
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| 117 | |
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| 118 | return 0; |
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| 119 | } |
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| 120 | |
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| 121 | int roar_authfile_lock(struct roar_authfile * authfile) { |
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| 122 | if ( authfile == NULL ) |
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| 123 | return -1; |
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| 124 | |
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| 125 | // TODO: implement real locking here. |
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| 126 | return 0; |
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| 127 | } |
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| 128 | |
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| 129 | int roar_authfile_unlock(struct roar_authfile * authfile) { |
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| 130 | if ( authfile == NULL ) |
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| 131 | return -1; |
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| 132 | |
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| 133 | // TODO: implement real unlocking here. |
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| 134 | return 0; |
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| 135 | } |
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| 136 | |
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| 137 | int roar_authfile_sync(struct roar_authfile * authfile) { |
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| 138 | if ( authfile == NULL ) |
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| 139 | return -1; |
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| 140 | |
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| 141 | return roar_vio_sync(&(authfile->vio)); |
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| 142 | } |
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| 143 | |
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| 144 | |
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| 145 | struct roar_authfile_key * roar_authfile_key_new(int type, size_t len, const char * addr) { |
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| 146 | struct roar_authfile_key * ret; |
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| 147 | size_t addrlen; |
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| 148 | size_t retlen; |
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| 149 | |
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| 150 | if ( addr == NULL ) { |
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| 151 | addrlen = 0; |
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| 152 | } else { |
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| 153 | addrlen = strlen(addr) + 1; |
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| 154 | } |
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| 155 | |
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| 156 | retlen = sizeof(struct roar_authfile_key) + len + addrlen; |
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| 157 | |
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| 158 | if ( (ret = roar_mm_malloc(retlen)) == NULL ) |
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| 159 | return NULL; |
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| 160 | |
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| 161 | memset(ret, 0, retlen); |
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| 162 | |
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| 163 | ret->refc = 1; |
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| 164 | ret->type = type; |
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| 165 | ret->index = -1; |
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| 166 | |
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| 167 | if ( addrlen == 0 ) { |
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| 168 | ret->address = NULL; |
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| 169 | } else { |
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| 170 | ret->address = (const void *)ret+sizeof(struct roar_authfile_key); |
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| 171 | memcpy((void*)ret->address, addr, addrlen); |
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| 172 | } |
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| 173 | |
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[4790] | 174 | ret->data = (void*)ret + sizeof(struct roar_authfile_key) + addrlen; |
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[4484] | 175 | |
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| 176 | ret->len = len; |
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| 177 | |
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| 178 | return ret; |
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| 179 | } |
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| 180 | |
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| 181 | int roar_authfile_key_ref(struct roar_authfile_key * key) { |
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| 182 | if ( key == NULL ) |
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| 183 | return -1; |
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| 184 | |
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| 185 | key->refc++; |
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| 186 | |
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| 187 | return 0; |
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| 188 | } |
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| 189 | |
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| 190 | int roar_authfile_key_unref(struct roar_authfile_key * key) { |
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| 191 | if ( key == NULL ) |
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| 192 | return -1; |
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| 193 | |
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| 194 | if ( key->refc == 0 ) { |
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| 195 | ROAR_ERR("roar_authfile_key_unref(key=%p): Key has reference count of zero. This is bad. assuming refc=1", key); |
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| 196 | key->refc = 1; |
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[4973] | 197 | roar_panic(ROAR_FATAL_ERROR_MEMORY_CORRUPTION, NULL); |
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[4484] | 198 | } |
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| 199 | |
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| 200 | key->refc--; |
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| 201 | |
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| 202 | if ( key->refc > 0 ) |
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| 203 | return 0; |
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| 204 | |
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| 205 | roar_mm_free(key); |
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| 206 | |
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| 207 | return 0; |
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| 208 | } |
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| 209 | |
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[4488] | 210 | int roar_authfile_add_key(struct roar_authfile * authfile, struct roar_authfile_key * key) { |
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| 211 | if ( authfile == NULL || key == NULL ) |
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| 212 | return -1; |
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| 213 | |
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| 214 | switch (authfile->type) { |
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| 215 | case ROAR_AUTHFILE_TYPE_ESD: |
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| 216 | case ROAR_AUTHFILE_TYPE_PULSE: |
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| 217 | if ( key->type != ROAR_AUTH_T_COOKIE || (key->index != 0 && key->index != -1) ) |
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| 218 | return -1; |
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| 219 | if ( roar_authfile_sync(authfile) == -1 ) |
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| 220 | return -1; |
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| 221 | if ( roar_authfile_lock(authfile) == -1 ) |
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| 222 | return -1; |
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| 223 | if ( roar_vio_lseek(&(authfile->vio), 0, SEEK_SET) != 0 ) |
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| 224 | return -1; |
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[5270] | 225 | if ( roar_vio_write(&(authfile->vio), key->data, key->len) != (ssize_t)key->len ) |
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[4488] | 226 | return -1; |
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| 227 | if ( roar_authfile_unlock(authfile) == -1 ) |
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| 228 | return -1; |
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| 229 | return 0; |
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| 230 | break; |
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| 231 | default: |
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| 232 | return -1; |
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| 233 | break; |
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| 234 | } |
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| 235 | } |
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[4484] | 236 | |
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| 237 | struct roar_authfile_key * roar_authfile_lookup_key(struct roar_authfile * authfile, |
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| 238 | int type, int minindex, const char * address) { |
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| 239 | struct roar_authfile_key * ret = NULL; |
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| 240 | ssize_t len; |
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| 241 | |
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| 242 | if ( authfile == NULL ) |
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| 243 | return NULL; |
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| 244 | |
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| 245 | switch (authfile->type) { |
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| 246 | case ROAR_AUTHFILE_TYPE_ESD: |
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| 247 | case ROAR_AUTHFILE_TYPE_PULSE: |
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[4792] | 248 | if ( (type != ROAR_AUTH_T_COOKIE && type != ROAR_AUTH_T_AUTO) || minindex > 0 ) |
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[4484] | 249 | return NULL; |
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| 250 | |
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[4792] | 251 | if ( (ret = roar_authfile_key_new(ROAR_AUTH_T_COOKIE, 256, NULL)) == NULL ) |
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[4484] | 252 | return NULL; |
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| 253 | |
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| 254 | len = roar_vio_read(&(authfile->vio), ret->data, ret->len); |
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| 255 | |
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| 256 | if ( len == -1 ) { |
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| 257 | roar_authfile_key_unref(ret); |
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| 258 | return NULL; |
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| 259 | } |
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| 260 | |
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| 261 | ret->len = len; |
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| 262 | ret->index = 0; |
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| 263 | break; |
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| 264 | default: |
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| 265 | return NULL; |
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| 266 | break; |
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| 267 | } |
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| 268 | |
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| 269 | return ret; |
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| 270 | } |
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| 271 | |
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[4787] | 272 | struct roar_authfile_key * roar_authfile_key_new_random(int type, size_t len, const char * addr) { |
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| 273 | struct roar_authfile_key * ret = roar_authfile_key_new(type, len, addr); |
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| 274 | |
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| 275 | if ( ret == NULL ) |
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| 276 | return NULL; |
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| 277 | |
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| 278 | roar_random_gen_nonce(ret->data, ret->len); |
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| 279 | |
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| 280 | return ret; |
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| 281 | } |
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| 282 | |
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[4483] | 283 | //ll |
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