[4428] | 1 | //serverinfo.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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[4428] | 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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| 38 | struct ie { |
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| 39 | int type; |
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| 40 | size_t len; |
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| 41 | char * buf; |
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| 42 | }; |
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| 43 | |
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[4430] | 44 | struct roar_server_info * roar_server_info(struct roar_connection * con) { |
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[4440] | 45 | struct roar_server_info * ret; |
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[4430] | 46 | struct roar_message mes; |
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| 47 | uint16_t * d16; |
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[4440] | 48 | char * data = NULL; |
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[4430] | 49 | |
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| 50 | memset(&mes, 0, sizeof(mes)); |
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| 51 | |
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| 52 | mes.cmd = ROAR_CMD_SERVER_INFO; |
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| 53 | mes.datalen = 2*2; |
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| 54 | d16 = (uint16_t*)mes.data; |
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| 55 | |
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| 56 | d16[0] = ROAR_HOST2NET16(0); // version |
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| 57 | d16[1] = ROAR_HOST2NET16(ROAR_IT_SERVER); |
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| 58 | |
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[4440] | 59 | if ( roar_req(con, &mes, &data) != 0 ) |
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[4430] | 60 | return NULL; |
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| 61 | |
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| 62 | if ( mes.cmd != ROAR_CMD_OK ) |
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| 63 | return NULL; |
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| 64 | |
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[4440] | 65 | ret = roar_server_info_from_mes(&mes, data); |
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| 66 | |
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| 67 | if ( data != NULL ) |
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| 68 | free(data); |
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| 69 | |
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| 70 | return ret; |
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[4430] | 71 | } |
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[4428] | 72 | |
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| 73 | int roar_server_info_free(struct roar_server_info * info) { |
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| 74 | if ( info == NULL ) |
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| 75 | return -1; |
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| 76 | |
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| 77 | roar_mm_free(info); |
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| 78 | |
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| 79 | return 0; |
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| 80 | } |
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| 81 | |
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[4433] | 82 | #define _add(t, m) do { if ( info->m != NULL && (sl = strlen(info->m)) != 0 ) { iebuf[idx].type = (t); iebuf[idx].len = sl; iebuf[idx].buf = (info->m); idx++; needlen += 4 + sl; } } while (0) |
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[4428] | 83 | |
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[4440] | 84 | int roar_server_info_to_mes(struct roar_message * mes, struct roar_server_info * info, void ** data) { |
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[4428] | 85 | size_t needlen = 4; |
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| 86 | size_t sl; |
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| 87 | int idx = 0; |
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| 88 | struct ie iebuf[sizeof(struct roar_server_info)/sizeof(char*)]; |
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[4430] | 89 | uint16_t * d16, * dptr; |
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| 90 | char * textpart; |
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| 91 | int i; |
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[4440] | 92 | char * mesdata; |
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[4428] | 93 | |
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| 94 | if ( mes == NULL || info == NULL ) |
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| 95 | return -1; |
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| 96 | |
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| 97 | _add(ROAR_ITST_VERSION, version); |
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| 98 | _add(ROAR_ITST_LOCATION, location); |
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| 99 | _add(ROAR_ITST_DESCRIPTION, description); |
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| 100 | _add(ROAR_ITST_CONTACT, contact); |
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| 101 | _add(ROAR_ITST_SERIAL, serial); |
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| 102 | _add(ROAR_ITST_ADDRESS, address); |
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| 103 | _add(ROAR_ITST_UIURL, uiurl); |
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| 104 | _add(ROAR_ITST_UN_SYSNAME, un.sysname); |
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| 105 | _add(ROAR_ITST_UN_RELEASE, un.release); |
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| 106 | _add(ROAR_ITST_UN_NODENAME, un.nodename); |
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| 107 | _add(ROAR_ITST_UN_MACHINE, un.machine); |
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| 108 | |
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| 109 | if ( needlen > LIBROAR_BUFFER_MSGDATA ) { |
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[4440] | 110 | if ( data == NULL ) |
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| 111 | return -1; |
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| 112 | |
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| 113 | mesdata = malloc(needlen); |
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| 114 | |
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| 115 | if ( mesdata == NULL ) |
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| 116 | return -1; |
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[4441] | 117 | |
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| 118 | *data = mesdata; |
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[4440] | 119 | } else { |
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| 120 | mesdata = mes->data; |
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[4428] | 121 | } |
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| 122 | |
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| 123 | memset(mes, 0, sizeof(struct roar_message)); |
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| 124 | |
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| 125 | mes->datalen = needlen; |
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| 126 | |
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[4440] | 127 | d16 = (uint16_t*)mesdata; |
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[4428] | 128 | |
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[4440] | 129 | mesdata[0] = 0; // version |
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| 130 | mesdata[1] = 0; // reserved |
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[4430] | 131 | |
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| 132 | d16[1] = ROAR_HOST2NET16(idx); |
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| 133 | |
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| 134 | dptr = &(d16[2]); |
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| 135 | |
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| 136 | for (i = 0; i < idx; i++) { |
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| 137 | dptr[0] = ROAR_HOST2NET16(iebuf[i].type & 0xFF); |
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| 138 | dptr[1] = ROAR_HOST2NET16(iebuf[i].len); |
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| 139 | dptr += 2; |
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| 140 | } |
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| 141 | |
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[4440] | 142 | textpart = mesdata + (4 + 4*idx); |
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[4430] | 143 | |
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| 144 | for (i = 0; i < idx; i++) { |
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| 145 | memcpy(textpart, iebuf[i].buf, iebuf[i].len); |
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| 146 | textpart += iebuf[i].len; |
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| 147 | } |
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| 148 | |
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| 149 | return 0; |
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[4428] | 150 | } |
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| 151 | |
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[4440] | 152 | struct roar_server_info * roar_server_info_from_mes(struct roar_message * mes, void * data) { |
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[4430] | 153 | struct ie iebuf[sizeof(struct roar_server_info)/sizeof(char*)]; |
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| 154 | struct ie * ieptr; |
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| 155 | struct roar_server_info * ret = NULL; |
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| 156 | uint16_t * d16, * dptr; |
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| 157 | int idx; |
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| 158 | int i; |
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| 159 | size_t needlen = 4; |
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| 160 | char * textpart; |
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| 161 | char * textbuf; |
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| 162 | char ** tptr; |
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[4440] | 163 | char * mesdata; |
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[4430] | 164 | |
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[4433] | 165 | ROAR_DBG("roar_server_info(mes=%p{.datalen=%llu) = ?", mes, (long long unsigned int)mes->datalen); |
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| 166 | |
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[4430] | 167 | if ( mes == NULL ) |
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| 168 | return NULL; |
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| 169 | |
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[4440] | 170 | if ( data == NULL ) { |
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| 171 | mesdata = mes->data; |
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| 172 | } else { |
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| 173 | mesdata = data; |
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| 174 | } |
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| 175 | |
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[4430] | 176 | memset(iebuf, 0, sizeof(iebuf)); |
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| 177 | |
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[4433] | 178 | ROAR_DBG("roar_server_info(mes=%p) = ?", mes); |
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| 179 | |
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[4430] | 180 | // some basic texts like version: |
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| 181 | if ( mes->datalen < needlen ) |
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| 182 | return NULL; |
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| 183 | |
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[4433] | 184 | ROAR_DBG("roar_server_info(mes=%p) = ?", mes); |
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| 185 | |
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[4440] | 186 | if ( mesdata[0] != 0 ) /* version */ |
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[4430] | 187 | return NULL; |
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| 188 | |
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[4433] | 189 | ROAR_DBG("roar_server_info(mes=%p) = ?", mes); |
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| 190 | |
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[4440] | 191 | if ( mesdata[1] != 0 ) /* reserved */ |
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[4430] | 192 | return NULL; |
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| 193 | |
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[4433] | 194 | ROAR_DBG("roar_server_info(mes=%p) = ?", mes); |
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| 195 | |
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[4440] | 196 | d16 = (uint16_t*)mesdata; |
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[4430] | 197 | |
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| 198 | idx = ROAR_NET2HOST16(d16[1]); |
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| 199 | |
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[4433] | 200 | ROAR_DBG("roar_server_info(mes=%p): idx=%i", mes, idx); |
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| 201 | |
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[4430] | 202 | // return error if our index buffer is too short. |
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| 203 | if ( idx > (sizeof(iebuf)/sizeof(*iebuf)) ) |
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| 204 | return NULL; |
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| 205 | |
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[4433] | 206 | ROAR_DBG("roar_server_info(mes=%p) = ?", mes); |
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| 207 | |
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| 208 | ROAR_DBG("roar_server_info(mes=%p): needlen=%llu", mes, (long long unsigned int)needlen); |
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| 209 | |
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[4430] | 210 | needlen += 4*idx; |
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| 211 | |
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| 212 | // recheck if we have a complet index. |
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| 213 | if ( mes->datalen < needlen ) |
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| 214 | return NULL; |
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| 215 | |
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[4433] | 216 | ROAR_DBG("roar_server_info(mes=%p) = ?", mes); |
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| 217 | |
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[4440] | 218 | d16 = (uint16_t*)mesdata; |
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[4430] | 219 | dptr = &(d16[2]); |
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| 220 | |
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[4440] | 221 | textpart = mesdata + (4 + 4*idx); |
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[4430] | 222 | |
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[4433] | 223 | ROAR_DBG("roar_server_info(mes=%p): needlen=%llu", mes, (long long unsigned int)needlen); |
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| 224 | |
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[4430] | 225 | for (i = 0; i < idx; i++) { |
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| 226 | iebuf[i].type = ROAR_NET2HOST16(dptr[0]) & 0xFF; |
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| 227 | iebuf[i].len = ROAR_NET2HOST16(dptr[1]); |
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| 228 | iebuf[i].buf = textpart; |
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| 229 | needlen += iebuf[i].len; |
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| 230 | textpart += iebuf[i].len; |
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[4433] | 231 | dptr += 2; |
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| 232 | ROAR_DBG("roar_server_info(mes=%p): iebuf[i]={.len=%llu,...}", mes, (long long unsigned int)iebuf[i].len); |
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[4430] | 233 | } |
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| 234 | |
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[4433] | 235 | ROAR_DBG("roar_server_info(mes=%p): needlen=%llu", mes, (long long unsigned int)needlen); |
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| 236 | |
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[4430] | 237 | // recheck if we have all the data... |
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| 238 | if ( mes->datalen < needlen ) |
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| 239 | return NULL; |
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| 240 | |
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[4433] | 241 | ROAR_DBG("roar_server_info(mes=%p) = ?", mes); |
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| 242 | |
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[4430] | 243 | // alloc the needed space. this can be reduced in future to the actual needed value. |
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| 244 | ret = roar_mm_malloc(2*sizeof(struct roar_server_info) + mes->datalen); |
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| 245 | |
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| 246 | if ( ret == NULL ) |
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| 247 | return NULL; |
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| 248 | |
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[4433] | 249 | ROAR_DBG("roar_server_info(mes=%p) = ?", mes); |
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| 250 | |
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[4430] | 251 | // for the size see the alloc call above. |
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| 252 | memset(ret, 0, 2*sizeof(struct roar_server_info) + mes->datalen); |
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| 253 | |
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| 254 | textbuf = (char*)ret + sizeof(struct roar_server_info); |
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| 255 | |
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| 256 | for (i = 0; i < idx; i++) { |
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| 257 | ieptr = &(iebuf[i]); |
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| 258 | |
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| 259 | // ignore empty fields |
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| 260 | if ( ieptr->len == 0 ) |
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| 261 | continue; |
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| 262 | if ( ieptr->len == 1 && ieptr->buf[0] == 0 ) |
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| 263 | continue; |
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| 264 | |
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| 265 | #define _ck(TYPE,member) case TYPE: tptr = &(ret->member); break; |
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| 266 | switch (ieptr->type) { |
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| 267 | _ck(ROAR_ITST_VERSION, version); |
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| 268 | _ck(ROAR_ITST_LOCATION, location); |
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| 269 | _ck(ROAR_ITST_DESCRIPTION, description); |
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| 270 | _ck(ROAR_ITST_CONTACT, contact); |
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| 271 | _ck(ROAR_ITST_SERIAL, serial); |
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| 272 | _ck(ROAR_ITST_ADDRESS, address); |
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| 273 | _ck(ROAR_ITST_UIURL, uiurl); |
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| 274 | _ck(ROAR_ITST_UN_SYSNAME, un.sysname); |
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| 275 | _ck(ROAR_ITST_UN_RELEASE, un.release); |
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| 276 | _ck(ROAR_ITST_UN_NODENAME, un.nodename); |
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| 277 | _ck(ROAR_ITST_UN_MACHINE, un.machine); |
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| 278 | default: |
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| 279 | continue; |
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| 280 | break; |
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| 281 | } |
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| 282 | #undef _ck |
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| 283 | |
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| 284 | *tptr = textbuf; |
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| 285 | memcpy(textbuf, ieptr->buf, ieptr->len); |
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| 286 | textbuf += ieptr->len; |
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| 287 | *textbuf = 0; // set \0 |
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| 288 | textbuf++; |
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| 289 | } |
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| 290 | |
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[4433] | 291 | ROAR_DBG("roar_server_info(mes=%p) = %p", mes, ret); |
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| 292 | |
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[4430] | 293 | return ret; |
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| 294 | } |
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[4428] | 295 | |
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| 296 | |
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| 297 | //ll |
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