[4824] | 1 | //vio_misc.c: |
---|
| 2 | |
---|
| 3 | /* |
---|
[6052] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2011-2015 |
---|
[4824] | 5 | * |
---|
| 6 | * This file is part of libroar a part of RoarAudio, |
---|
| 7 | * a cross-platform sound system for both, home and professional use. |
---|
| 8 | * See README for details. |
---|
| 9 | * |
---|
| 10 | * This file is free software; you can redistribute it and/or modify |
---|
| 11 | * it under the terms of the GNU General Public License version 3 |
---|
| 12 | * as published by the Free Software Foundation. |
---|
| 13 | * |
---|
| 14 | * libroar is distributed in the hope that it will be useful, |
---|
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 17 | * GNU General Public License for more details. |
---|
| 18 | * |
---|
| 19 | * You should have received a copy of the GNU General Public License |
---|
| 20 | * along with this software; see the file COPYING. If not, write to |
---|
| 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
---|
| 22 | * Boston, MA 02110-1301, USA. |
---|
| 23 | * |
---|
| 24 | * NOTE for everyone want's to change something and send patches: |
---|
| 25 | * read README and HACKING! There a addition information on |
---|
| 26 | * the license of this document you need to read before you send |
---|
| 27 | * any patches. |
---|
| 28 | * |
---|
| 29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
---|
| 30 | * or libpulse*: |
---|
| 31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
---|
| 32 | * and are therefore GPL. Because of this it may be illigal to use |
---|
| 33 | * them with any software that uses libesd, libartsc or libpulse*. |
---|
| 34 | */ |
---|
| 35 | |
---|
| 36 | #include "libroar.h" |
---|
| 37 | |
---|
| 38 | static ssize_t roar_vio_misc_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 39 | struct roar_vio_misc * self = vio->inst; |
---|
| 40 | |
---|
[6029] | 41 | if ( self->read == NULL ) { |
---|
| 42 | roar_err_set(ROAR_ERROR_NOSYS); |
---|
[4824] | 43 | return -1; |
---|
[6029] | 44 | } |
---|
[4824] | 45 | |
---|
| 46 | return self->read(buf, count, vio, self); |
---|
| 47 | } |
---|
| 48 | |
---|
| 49 | static ssize_t roar_vio_misc_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 50 | struct roar_vio_misc * self = vio->inst; |
---|
| 51 | |
---|
[6029] | 52 | if ( self->write == NULL ) { |
---|
| 53 | roar_err_set(ROAR_ERROR_RO); |
---|
[4824] | 54 | return -1; |
---|
[6029] | 55 | } |
---|
[4824] | 56 | |
---|
| 57 | return self->write(buf, count, vio, self); |
---|
| 58 | } |
---|
| 59 | |
---|
[5278] | 60 | static roar_off_t roar_vio_misc_lseek (struct roar_vio_calls * vio, roar_off_t offset, int whence) { |
---|
[5270] | 61 | (void)vio, (void)offset, (void)whence; |
---|
[4824] | 62 | return 0; |
---|
| 63 | } |
---|
| 64 | |
---|
| 65 | static int roar_vio_misc_sync (struct roar_vio_calls * vio) { |
---|
[5270] | 66 | (void)vio; |
---|
[4824] | 67 | return 0; |
---|
| 68 | } |
---|
| 69 | |
---|
[5278] | 70 | static int roar_vio_misc_ctl (struct roar_vio_calls * vio, roar_vio_ctl_t cmd, void * data) { |
---|
[5413] | 71 | struct roar_vio_misc * self; |
---|
[4826] | 72 | |
---|
| 73 | if ( vio == NULL || cmd == -1 ) |
---|
| 74 | return -1; |
---|
| 75 | |
---|
[5413] | 76 | self = vio->inst; |
---|
| 77 | |
---|
[4826] | 78 | switch (cmd) { |
---|
| 79 | case ROAR_VIO_CTL_GET_NAME: |
---|
[6029] | 80 | if ( data == NULL ) { |
---|
| 81 | roar_err_set(ROAR_ERROR_FAULT); |
---|
[4826] | 82 | return -1; |
---|
[6029] | 83 | } |
---|
[4826] | 84 | |
---|
| 85 | *(const char**)data = self->name; |
---|
| 86 | return 0; |
---|
| 87 | break; |
---|
| 88 | case ROAR_VIO_CTL_SET_NOSYNC: |
---|
| 89 | vio->sync = NULL; |
---|
| 90 | return 0; |
---|
| 91 | break; |
---|
[5276] | 92 | case ROAR_VIO_CTL_NONBLOCK: |
---|
| 93 | if ( self->support_nonblocking ) |
---|
| 94 | return 0; |
---|
| 95 | |
---|
| 96 | if ( *(int*)data == ROAR_SOCKET_BLOCK ) |
---|
| 97 | return 0; |
---|
| 98 | |
---|
[6029] | 99 | roar_err_set(ROAR_ERROR_NOSYS); |
---|
[5276] | 100 | return -1; |
---|
| 101 | break; |
---|
[4826] | 102 | } |
---|
| 103 | |
---|
[6029] | 104 | roar_err_set(ROAR_ERROR_BADRQC); |
---|
[4824] | 105 | return -1; |
---|
| 106 | } |
---|
| 107 | |
---|
| 108 | static int roar_vio_misc_close (struct roar_vio_calls * vio) { |
---|
[5270] | 109 | (void)vio; |
---|
[4824] | 110 | return 0; |
---|
| 111 | } |
---|
| 112 | |
---|
| 113 | int roar_vio_open_misc (struct roar_vio_calls * calls, const struct roar_vio_misc * callbacks) { |
---|
[6029] | 114 | if ( calls == NULL || callbacks == NULL ) { |
---|
| 115 | roar_err_set(ROAR_ERROR_FAULT); |
---|
[4824] | 116 | return -1; |
---|
[6029] | 117 | } |
---|
[4824] | 118 | |
---|
| 119 | memset(calls, 0, sizeof(struct roar_vio_calls)); |
---|
[5388] | 120 | calls->flags = ROAR_VIO_FLAGS_NONE; |
---|
| 121 | calls->refc = 1; |
---|
[4824] | 122 | calls->read = roar_vio_misc_read; |
---|
| 123 | calls->write = roar_vio_misc_write; |
---|
| 124 | calls->lseek = roar_vio_misc_lseek; |
---|
| 125 | calls->sync = roar_vio_misc_sync; |
---|
| 126 | calls->ctl = roar_vio_misc_ctl; |
---|
| 127 | calls->close = roar_vio_misc_close; |
---|
| 128 | calls->inst = (void*)callbacks; |
---|
| 129 | |
---|
| 130 | return 0; |
---|
| 131 | } |
---|
| 132 | |
---|
| 133 | static ssize_t roar_vio_misc_op_return_len (void * buf, size_t len, struct roar_vio_calls * vio, struct roar_vio_misc * callbacks) { |
---|
[5270] | 134 | (void)buf, (void)vio, (void)callbacks; |
---|
[4824] | 135 | return len; |
---|
| 136 | } |
---|
| 137 | |
---|
| 138 | static ssize_t roar_vio_misc_op_return_zero(void * buf, size_t len, struct roar_vio_calls * vio, struct roar_vio_misc * callbacks) { |
---|
[5270] | 139 | (void)buf, (void)len, (void)vio, (void)callbacks; |
---|
[4824] | 140 | return 0; |
---|
| 141 | } |
---|
| 142 | |
---|
| 143 | static ssize_t roar_vio_misc_op_zero(void * buf, size_t len, struct roar_vio_calls * vio, struct roar_vio_misc * callbacks) { |
---|
[5270] | 144 | (void)vio, (void)callbacks; |
---|
[4824] | 145 | memset(buf, 0, len); |
---|
| 146 | return len; |
---|
| 147 | } |
---|
| 148 | |
---|
[4876] | 149 | static ssize_t roar_vio_misc_op_full(void * buf, size_t len, struct roar_vio_calls * vio, struct roar_vio_misc * callbacks) |
---|
| 150 | { |
---|
[5270] | 151 | (void)buf, (void)len, (void)vio, (void)callbacks; |
---|
[4876] | 152 | roar_err_set(ROAR_ERROR_NOSPC); |
---|
| 153 | return -1; |
---|
| 154 | } |
---|
| 155 | |
---|
[4824] | 156 | static ssize_t roar_vio_misc_op_random_nonce(void * buf, size_t len, struct roar_vio_calls * vio, struct roar_vio_misc * callbacks) { |
---|
[5270] | 157 | (void)vio, (void)callbacks; |
---|
| 158 | |
---|
[4824] | 159 | if ( roar_random_gen_nonce(buf, len) == -1 ) |
---|
| 160 | return -1; |
---|
| 161 | |
---|
| 162 | return len; |
---|
| 163 | } |
---|
| 164 | |
---|
| 165 | static ssize_t roar_vio_misc_op_random_salt_nonce(void * buf, size_t len, struct roar_vio_calls * vio, struct roar_vio_misc * callbacks) { |
---|
[5270] | 166 | (void)vio, (void)callbacks; |
---|
| 167 | |
---|
[4824] | 168 | if ( roar_random_salt_nonce(buf, len) == -1 ) |
---|
| 169 | return -1; |
---|
| 170 | |
---|
| 171 | return len; |
---|
| 172 | } |
---|
| 173 | |
---|
| 174 | static const struct roar_vio_misc libroar_vio_miscs[] = { |
---|
| 175 | {.name = "null", .support_nonblocking = 1, .read = roar_vio_misc_op_return_zero, .write = roar_vio_misc_op_return_len}, |
---|
[4876] | 176 | {.name = "full", .support_nonblocking = 1, .read = roar_vio_misc_op_return_zero, .write = roar_vio_misc_op_full}, |
---|
[4824] | 177 | {.name = "zero", .support_nonblocking = 1, .read = roar_vio_misc_op_zero, .write = roar_vio_misc_op_return_len}, |
---|
| 178 | {.name = "nrandom", .support_nonblocking = 1, |
---|
| 179 | .read = roar_vio_misc_op_random_nonce, .write = roar_vio_misc_op_random_salt_nonce} |
---|
| 180 | }; |
---|
| 181 | |
---|
| 182 | int roar_vio_open_misc_by_name(struct roar_vio_calls * calls, const char * name) { |
---|
| 183 | size_t i; |
---|
| 184 | |
---|
[6029] | 185 | if ( calls == NULL || name == NULL ) { |
---|
| 186 | roar_err_set(ROAR_ERROR_FAULT); |
---|
[4824] | 187 | return -1; |
---|
[6029] | 188 | } |
---|
[4824] | 189 | |
---|
| 190 | for (i = 0; i < (sizeof(libroar_vio_miscs)/sizeof(*libroar_vio_miscs)); i++) |
---|
| 191 | if ( !strcasecmp(name, libroar_vio_miscs[i].name) ) |
---|
| 192 | return roar_vio_open_misc(calls, &(libroar_vio_miscs[i])); |
---|
| 193 | |
---|
[6029] | 194 | roar_err_set(ROAR_ERROR_NOENT); |
---|
[4824] | 195 | return -1; |
---|
| 196 | } |
---|
| 197 | |
---|
| 198 | //ll |
---|