[3297] | 1 | //roardl.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, 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 | #if defined(ROAR_HAVE_LIBDL) |
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| 38 | static void * _roardl2ldl (struct roar_dl_lhandle * lhandle) { |
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| 39 | if ( lhandle == ROAR_DL_HANDLE_DEFAULT ) |
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| 40 | return RTLD_DEFAULT; |
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| 41 | |
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| 42 | if ( lhandle == ROAR_DL_HANDLE_NEXT ) |
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| 43 | return RTLD_NEXT; |
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| 44 | |
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| 45 | return lhandle->handle; |
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| 46 | } |
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| 47 | #endif |
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| 48 | |
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| 49 | struct roar_dl_lhandle * roar_dl_open(const char * filename, int flags, int ra_init) { |
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[3298] | 50 | struct roar_dl_lhandle * ret = NULL; |
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| 51 | |
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| 52 | if ( ret == NULL ) |
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| 53 | return NULL; |
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| 54 | |
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| 55 | if ( ra_init ) { |
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| 56 | roar_dl_ra_init(ret, NULL); |
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| 57 | } |
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| 58 | |
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| 59 | return ret; |
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[3297] | 60 | } |
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| 61 | |
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| 62 | int roar_dl_close(struct roar_dl_lhandle * lhandle) { |
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[3301] | 63 | if ( lhandle == ROAR_DL_HANDLE_DEFAULT ) |
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| 64 | return -1; |
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| 65 | if ( lhandle == ROAR_DL_HANDLE_NEXT ) |
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| 66 | return -1; |
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| 67 | |
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| 68 | if ( lhandle->lib != NULL && lhandle->lib->unload != NULL ) |
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| 69 | lhandle->lib->unload(lhandle->para, lhandle->lib); |
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| 70 | |
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[3297] | 71 | #if defined(ROAR_HAVE_LIBDL) |
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| 72 | return dlclose(_roardl2ldl(lhandle)); |
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| 73 | #else |
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| 74 | return -1; |
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| 75 | #endif |
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| 76 | } |
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| 77 | |
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| 78 | void * roar_dl_getsym(struct roar_dl_lhandle * lhandle, const char * sym, int type) { |
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| 79 | #if defined(ROAR_HAVE_LIBDL) |
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| 80 | return dlsym(_roardl2ldl(lhandle), sym); |
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| 81 | #else |
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| 82 | return NULL; |
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| 83 | #endif |
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| 84 | } |
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| 85 | |
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| 86 | int roar_dl_ra_init(struct roar_dl_lhandle * lhandle, const char * prefix) { |
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| 87 | #define _SUFFIX "_roaraudio_library_init" |
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| 88 | char name[80] = _SUFFIX; |
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| 89 | struct roar_dl_libraryinst * (*func)(struct roar_dl_librarypara * para); |
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| 90 | struct roar_dl_libraryinst * lib; |
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[3300] | 91 | struct roar_dl_librarypara * para = NULL; |
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| 92 | int i; |
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[3297] | 93 | |
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| 94 | if ( (void*)lhandle < (void*)128 && prefix == NULL ) |
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| 95 | return -1; |
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| 96 | |
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| 97 | if ( prefix != NULL ) { |
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| 98 | strcpy(name, "_"); |
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| 99 | strcat(name, prefix); |
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| 100 | strcat(name, "_"); |
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| 101 | strcat(name, _SUFFIX); |
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| 102 | } |
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| 103 | |
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| 104 | if ( (func = roar_dl_getsym(lhandle, name, -1)) == NULL ) |
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| 105 | return -1; |
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| 106 | |
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[3300] | 107 | lib = func(para); |
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[3297] | 108 | |
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| 109 | if ( lib == NULL ) |
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| 110 | return -1; |
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| 111 | |
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[3300] | 112 | if ( lib->version != ROAR_DL_LIBINST_VERSION ) |
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| 113 | return -1; |
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| 114 | |
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| 115 | if ( sizeof(struct roar_dl_libraryinst) > lib->len ) |
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| 116 | return -1; |
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| 117 | |
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| 118 | for (i = 0; i < ROAR_DL_FN_MAX; i++) { |
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| 119 | if ( lib->func[i] != NULL ) |
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| 120 | lib->func[i](para, lib); |
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| 121 | } |
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| 122 | |
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[3302] | 123 | return 0; |
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[3297] | 124 | } |
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| 125 | |
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| 126 | //ll |
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