[4483] | 1 | //authfile.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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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, 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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| 52 | |
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| 53 | switch (type) { |
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| 54 | case ROAR_AUTHFILE_TYPE_ESD: |
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| 55 | case ROAR_AUTHFILE_TYPE_PULSE: |
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| 56 | break; |
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| 57 | default: |
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| 58 | return NULL; |
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| 59 | break; |
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| 60 | } |
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| 61 | |
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| 62 | 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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| 63 | return NULL; |
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| 64 | |
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| 65 | if ( (ret = roar_mm_malloc(sizeof(struct roar_authfile))) == NULL ) |
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| 66 | return NULL; |
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| 67 | |
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| 68 | memset(ret, 0, sizeof(struct roar_authfile)); |
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| 69 | |
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| 70 | ret->refc = 1; |
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| 71 | ret->lockc = 0; |
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| 72 | ret->type = type; |
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| 73 | ret->rw = rw; |
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| 74 | ret->version = version; |
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| 75 | ret->magiclen = magiclen; |
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| 76 | |
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| 77 | filename = roar_mm_strdup(filename); |
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| 78 | |
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| 79 | if ( roar_vio_open_dstr(&(ret->vio), (char*)filename, &def, 1) == -1 ) { |
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| 80 | roar_mm_free((void*)filename); |
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| 81 | roar_mm_free(ret); |
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| 82 | return NULL; |
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| 83 | } |
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| 84 | |
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| 85 | roar_mm_free((void*)filename); |
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| 86 | |
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| 87 | return ret; |
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| 88 | } |
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| 89 | |
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| 90 | int roar_authfile_close(struct roar_authfile * authfile) { |
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| 91 | if ( authfile == NULL ) |
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| 92 | return -1; |
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| 93 | |
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| 94 | roar_vio_close(&(authfile->vio)); |
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| 95 | |
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| 96 | roar_mm_free(authfile); |
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| 97 | |
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| 98 | return 0; |
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| 99 | } |
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| 100 | |
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| 101 | int roar_authfile_lock(struct roar_authfile * authfile) { |
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| 102 | if ( authfile == NULL ) |
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| 103 | return -1; |
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| 104 | |
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| 105 | // TODO: implement real locking here. |
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| 106 | return 0; |
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| 107 | } |
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| 108 | |
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| 109 | int roar_authfile_unlock(struct roar_authfile * authfile) { |
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| 110 | if ( authfile == NULL ) |
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| 111 | return -1; |
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| 112 | |
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| 113 | // TODO: implement real unlocking here. |
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| 114 | return 0; |
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| 115 | } |
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| 116 | |
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| 117 | int roar_authfile_sync(struct roar_authfile * authfile) { |
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| 118 | if ( authfile == NULL ) |
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| 119 | return -1; |
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| 120 | |
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| 121 | return roar_vio_sync(&(authfile->vio)); |
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| 122 | } |
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| 123 | |
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| 124 | |
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| 125 | struct roar_authfile_key * roar_authfile_key_new(int type, size_t len, const char * addr) { |
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| 126 | struct roar_authfile_key * ret; |
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| 127 | size_t addrlen; |
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| 128 | size_t retlen; |
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| 129 | |
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| 130 | if ( addr == NULL ) { |
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| 131 | addrlen = 0; |
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| 132 | } else { |
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| 133 | addrlen = strlen(addr) + 1; |
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| 134 | } |
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| 135 | |
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| 136 | retlen = sizeof(struct roar_authfile_key) + len + addrlen; |
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| 137 | |
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| 138 | if ( (ret = roar_mm_malloc(retlen)) == NULL ) |
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| 139 | return NULL; |
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| 140 | |
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| 141 | memset(ret, 0, retlen); |
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| 142 | |
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| 143 | ret->refc = 1; |
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| 144 | ret->type = type; |
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| 145 | ret->index = -1; |
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| 146 | |
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| 147 | if ( addrlen == 0 ) { |
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| 148 | ret->address = NULL; |
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| 149 | } else { |
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| 150 | ret->address = (const void *)ret+sizeof(struct roar_authfile_key); |
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| 151 | memcpy((void*)ret->address, addr, addrlen); |
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| 152 | } |
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| 153 | |
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[4485] | 154 | ret->data = ret + sizeof(struct roar_authfile_key) + addrlen; |
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[4484] | 155 | |
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| 156 | ret->len = len; |
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| 157 | |
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| 158 | return ret; |
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| 159 | } |
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| 160 | |
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| 161 | int roar_authfile_key_ref(struct roar_authfile_key * key) { |
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| 162 | if ( key == NULL ) |
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| 163 | return -1; |
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| 164 | |
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| 165 | key->refc++; |
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| 166 | |
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| 167 | return 0; |
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| 168 | } |
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| 169 | |
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| 170 | int roar_authfile_key_unref(struct roar_authfile_key * key) { |
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| 171 | if ( key == NULL ) |
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| 172 | return -1; |
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| 173 | |
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| 174 | if ( key->refc == 0 ) { |
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| 175 | 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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| 176 | key->refc = 1; |
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| 177 | } |
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| 178 | |
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| 179 | key->refc--; |
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| 180 | |
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| 181 | if ( key->refc > 0 ) |
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| 182 | return 0; |
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| 183 | |
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| 184 | roar_mm_free(key); |
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| 185 | |
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| 186 | return 0; |
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| 187 | } |
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| 188 | |
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[4488] | 189 | int roar_authfile_add_key(struct roar_authfile * authfile, struct roar_authfile_key * key) { |
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| 190 | if ( authfile == NULL || key == NULL ) |
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| 191 | return -1; |
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| 192 | |
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| 193 | switch (authfile->type) { |
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| 194 | case ROAR_AUTHFILE_TYPE_ESD: |
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| 195 | case ROAR_AUTHFILE_TYPE_PULSE: |
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| 196 | if ( key->type != ROAR_AUTH_T_COOKIE || (key->index != 0 && key->index != -1) ) |
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| 197 | return -1; |
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| 198 | if ( roar_authfile_sync(authfile) == -1 ) |
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| 199 | return -1; |
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| 200 | if ( roar_authfile_lock(authfile) == -1 ) |
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| 201 | return -1; |
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| 202 | if ( roar_vio_lseek(&(authfile->vio), 0, SEEK_SET) != 0 ) |
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| 203 | return -1; |
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| 204 | if ( roar_vio_write(&(authfile->vio), key->data, key->len) != key->len ) |
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| 205 | return -1; |
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| 206 | if ( roar_authfile_unlock(authfile) == -1 ) |
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| 207 | return -1; |
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| 208 | return 0; |
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| 209 | break; |
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| 210 | default: |
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| 211 | return -1; |
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| 212 | break; |
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| 213 | } |
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| 214 | } |
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[4484] | 215 | |
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| 216 | struct roar_authfile_key * roar_authfile_lookup_key(struct roar_authfile * authfile, |
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| 217 | int type, int minindex, const char * address) { |
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| 218 | struct roar_authfile_key * ret = NULL; |
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| 219 | ssize_t len; |
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| 220 | |
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| 221 | if ( authfile == NULL ) |
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| 222 | return NULL; |
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| 223 | |
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| 224 | switch (authfile->type) { |
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| 225 | case ROAR_AUTHFILE_TYPE_ESD: |
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| 226 | case ROAR_AUTHFILE_TYPE_PULSE: |
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| 227 | if ( type != ROAR_AUTH_T_COOKIE || minindex > 0 ) |
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| 228 | return NULL; |
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| 229 | |
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| 230 | if ( (ret = roar_authfile_key_new(type, 256, NULL)) == NULL ) |
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| 231 | return NULL; |
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| 232 | |
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| 233 | len = roar_vio_read(&(authfile->vio), ret->data, ret->len); |
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| 234 | |
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| 235 | if ( len == -1 ) { |
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| 236 | roar_authfile_key_unref(ret); |
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| 237 | return NULL; |
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| 238 | } |
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| 239 | |
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| 240 | ret->len = len; |
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| 241 | ret->index = 0; |
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| 242 | break; |
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| 243 | default: |
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| 244 | return NULL; |
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| 245 | break; |
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| 246 | } |
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| 247 | |
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| 248 | return ret; |
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| 249 | } |
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| 250 | |
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[4483] | 251 | //ll |
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