[3353] | 1 | //plugins.c: |
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| 2 | |
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| 3 | /* |
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[4708] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2011 |
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[3353] | 5 | * |
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| 6 | * This file is part of roard 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 | * RoarAudio 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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[3517] | 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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[3353] | 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | #include "roard.h" |
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| 27 | |
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[3355] | 28 | #define MAX_PLUGINS 8 |
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| 29 | |
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[3362] | 30 | static struct _roard_plugin { |
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| 31 | struct roar_dl_lhandle * lhandle; |
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| 32 | struct roard_plugins_sched * sched; |
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[5275] | 33 | int protocols[MAX_PROTOS]; |
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[3362] | 34 | } g_plugins[MAX_PLUGINS]; |
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| 35 | static struct _roard_plugin * _pp = NULL; |
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[3355] | 36 | |
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[3362] | 37 | static struct _roard_plugin * _find_free(void) { |
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[3355] | 38 | int i; |
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| 39 | |
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| 40 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 41 | if ( g_plugins[i].lhandle == NULL ) { |
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| 42 | memset(&(g_plugins[i]), 0, sizeof(struct _roard_plugin)); |
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[3355] | 43 | return &(g_plugins[i]); |
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[3362] | 44 | } |
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[3355] | 45 | } |
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| 46 | |
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| 47 | return NULL; |
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| 48 | } |
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| 49 | |
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[3354] | 50 | int plugins_preinit (void) { |
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[3355] | 51 | memset(g_plugins, 0, sizeof(g_plugins)); |
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| 52 | |
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[3354] | 53 | return 0; |
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| 54 | } |
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| 55 | |
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[5275] | 56 | static void inline plugins_delete(struct _roard_plugin * plugin) { |
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| 57 | int i; |
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| 58 | |
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[5312] | 59 | if ( plugin->sched != NULL ) { |
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| 60 | if ( plugin->sched->free != NULL ) { |
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| 61 | roar_dl_context_restore(plugin->lhandle); |
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[5275] | 62 | plugin->sched->free(); |
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[5312] | 63 | roar_dl_context_store(plugin->lhandle); |
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| 64 | } |
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| 65 | } |
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[5275] | 66 | |
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| 67 | for (i = 0; i < MAX_PROTOS; i++) { |
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| 68 | if ( plugin->protocols[i] != -1 ) { |
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| 69 | clients_unregister_proto(plugin->protocols[i]); |
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| 70 | } |
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| 71 | } |
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| 72 | |
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| 73 | roar_dl_close(plugin->lhandle); |
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| 74 | memset(plugin, 0, sizeof(struct _roard_plugin)); |
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| 75 | plugin->lhandle = NULL; |
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| 76 | } |
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| 77 | |
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[3354] | 78 | int plugins_init (void) { |
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[3355] | 79 | int i; |
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| 80 | |
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| 81 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 82 | if ( g_plugins[i].lhandle != NULL ) { |
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| 83 | _pp = &(g_plugins[i]); |
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| 84 | |
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[4682] | 85 | _pp->sched = NULL; |
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| 86 | |
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[5275] | 87 | if ( roar_dl_ra_init(g_plugins[i].lhandle, NULL, NULL) == -1 ) { |
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| 88 | ROAR_WARN("plugins_init(void): Can not RA init lib at %p: %s", g_plugins[i].lhandle, roar_error2str(roar_error)); |
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| 89 | plugins_delete(&(g_plugins[i])); |
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| 90 | continue; |
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| 91 | } |
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[3362] | 92 | |
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[5312] | 93 | if ( g_plugins[i].sched != NULL ) { |
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| 94 | if ( g_plugins[i].sched->init != NULL ) { |
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| 95 | roar_dl_context_restore(g_plugins[i].lhandle); |
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[4682] | 96 | g_plugins[i].sched->init(); |
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[5312] | 97 | roar_dl_context_store(g_plugins[i].lhandle); |
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| 98 | } |
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| 99 | } |
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[3362] | 100 | |
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| 101 | _pp = NULL; |
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[3355] | 102 | } |
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| 103 | } |
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| 104 | |
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[3354] | 105 | return 0; |
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| 106 | } |
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[3353] | 107 | |
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[3354] | 108 | int plugins_free (void) { |
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[3355] | 109 | int i; |
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| 110 | |
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| 111 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 112 | if ( g_plugins[i].lhandle != NULL ) { |
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[5275] | 113 | plugins_delete(&(g_plugins[i])); |
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[3355] | 114 | } |
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| 115 | } |
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| 116 | |
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[3357] | 117 | return plugins_preinit(); |
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[3354] | 118 | } |
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| 119 | |
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[3362] | 120 | int plugins_update (void) { |
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| 121 | int ret = 0; |
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| 122 | int i; |
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| 123 | |
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[5312] | 124 | for (i = 0; i < MAX_PLUGINS; i++) { |
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| 125 | if ( g_plugins[i].lhandle != NULL ) { |
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| 126 | if ( g_plugins[i].sched != NULL ) { |
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| 127 | if ( g_plugins[i].sched->update != NULL ) { |
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| 128 | roar_dl_context_restore(g_plugins[i].lhandle); |
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[4682] | 129 | if ( g_plugins[i].sched->update() == -1 ) |
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| 130 | ret = -1; |
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[5312] | 131 | roar_dl_context_store(g_plugins[i].lhandle); |
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| 132 | } |
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| 133 | } |
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| 134 | } |
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| 135 | } |
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[3362] | 136 | |
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| 137 | return ret; |
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| 138 | } |
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| 139 | |
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[5275] | 140 | int plugins_load (const char * filename, const char * args) { |
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[3362] | 141 | struct _roard_plugin * next = _find_free(); |
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[5275] | 142 | struct roar_dl_librarypara * para; |
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| 143 | int i; |
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[3355] | 144 | |
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| 145 | if ( next == NULL ) |
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| 146 | return -1; |
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| 147 | |
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[5275] | 148 | for (i = 0; i < MAX_PROTOS; i++) |
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| 149 | next->protocols[i] = -1; |
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| 150 | |
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| 151 | if ( (para = roar_dl_para_new(args, NULL, ROARD_DL_APPNAME, ROARD_DL_ABIVERSION)) == NULL ) { |
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| 152 | ROAR_WARN("Can not load plugin (allocate para set): %s: %s", filename, roar_error2str(roar_error)); |
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| 153 | return -1; |
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| 154 | } |
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| 155 | |
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| 156 | next->lhandle = roar_dl_open(filename, ROAR_DL_FLAG_DEFAUTS, 0 /* we delay this until plugins_init() */, para); |
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| 157 | roar_dl_para_unref(para); |
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| 158 | |
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[3365] | 159 | if ( next->lhandle == NULL ) { |
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| 160 | ROAR_ERR("plugins_load(filename='%s'): can not load plugin: %s", filename, roar_dl_errstr(NULL)); |
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[3355] | 161 | return -1; |
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[3365] | 162 | } |
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[3355] | 163 | |
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| 164 | return 0; |
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[3354] | 165 | } |
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[3353] | 166 | |
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[3362] | 167 | int plugins_reg_sched(struct roard_plugins_sched * sched) { |
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| 168 | if ( _pp == NULL ) |
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| 169 | return -1; |
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| 170 | |
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| 171 | _pp->sched = sched; |
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| 172 | |
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| 173 | return 0; |
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| 174 | } |
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| 175 | |
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[4680] | 176 | int plugins_reg_proto(struct roard_proto * proto) { |
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[5275] | 177 | int i; |
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| 178 | |
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[4680] | 179 | if ( _pp == NULL ) |
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| 180 | return -1; |
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| 181 | |
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[5275] | 182 | for (i = 0; i < MAX_PROTOS; i++) { |
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| 183 | if ( _pp->protocols[i] == -1 ) { |
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| 184 | _pp->protocols[i] = proto->proto; |
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| 185 | break; |
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| 186 | } |
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| 187 | } |
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| 188 | |
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| 189 | if ( i == MAX_PROTOS ) { |
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| 190 | roar_err_set(ROAR_ERROR_NOMEM); |
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| 191 | return -1; |
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| 192 | } |
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| 193 | |
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[5312] | 194 | return clients_register_proto(proto, _pp->lhandle); |
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[4680] | 195 | } |
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| 196 | |
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[3353] | 197 | //ll |
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