1 | //slp.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
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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 | SLPBoolean roar_slp_url_callback(SLPHandle hslp, |
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38 | const char * srvurl, |
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39 | unsigned short lifetime, |
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40 | SLPError errcode, |
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41 | void * cookie) { |
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42 | struct roar_slp_cookie * self = cookie; |
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43 | |
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44 | ROAR_DBG("roar_slp_url_callback(*) = ?"); |
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45 | |
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46 | if (errcode == SLP_OK || errcode == SLP_LAST_CALL) { |
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47 | self->callbackerr = SLP_OK; |
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48 | |
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49 | if ( srvurl == NULL ) /* hu? */ |
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50 | return SLP_TRUE; |
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51 | |
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52 | if ( self->matchcount == ROAR_SLP_MAX_MATCHES ) |
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53 | return SLP_FALSE; |
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54 | |
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55 | strncpy(self->match[self->matchcount].url, srvurl, ROAR_SLP_MAX_URL_LEN); |
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56 | |
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57 | self->match[self->matchcount].url[ROAR_SLP_MAX_URL_LEN-1] = 0; |
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58 | |
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59 | self->matchcount++; |
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60 | } else { |
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61 | self->callbackerr = errcode; |
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62 | } |
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63 | |
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64 | |
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65 | /* return SLP_TRUE because we want to be called again */ |
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66 | /* if more services were found */ |
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67 | |
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68 | return SLP_TRUE; |
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69 | } |
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70 | |
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71 | int roar_slp_search (struct roar_slp_cookie * cookie, char * type) { |
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72 | #ifdef ROAR_HAVE_LIBSLP |
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73 | SLPError err; |
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74 | SLPHandle hslp; |
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75 | |
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76 | ROAR_DBG("roar_slp_search(cookie=%p, type='%s') = ?", cookie, type); |
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77 | |
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78 | if ( cookie->search != NULL ) /* currently only non-search filter mode supported */ |
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79 | return -1; |
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80 | |
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81 | err = SLPOpen("en", SLP_FALSE, &hslp); |
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82 | if (err != SLP_OK) { |
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83 | return -1; |
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84 | } |
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85 | |
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86 | ROAR_DBG("roar_slp_search(*) = ?"); |
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87 | |
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88 | err = SLPFindSrvs(hslp, |
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89 | type, |
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90 | 0, /* use configured scopes */ |
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91 | 0, /* no attr filter */ |
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92 | roar_slp_url_callback, |
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93 | cookie); |
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94 | |
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95 | ROAR_DBG("roar_slp_search(*) = ?"); |
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96 | |
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97 | /* err may contain an error code that occurred as the slp library */ |
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98 | /* _prepared_ to make the call. */ |
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99 | if (err != SLP_OK) { |
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100 | return -1; |
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101 | } |
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102 | |
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103 | /* callbackerr may contain an error code (that was assigned through */ |
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104 | /* the callback cookie) that occurred as slp packets were sent on */ |
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105 | /* the wire */ |
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106 | if (cookie->callbackerr != SLP_OK) { |
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107 | return -1; |
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108 | } |
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109 | |
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110 | ROAR_DBG("roar_slp_search(*) = ?"); |
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111 | |
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112 | /* Now that we're done using slp, close the slp handle */ |
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113 | //SLPClose(hslp); |
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114 | |
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115 | ROAR_DBG("roar_slp_search(*) = ?"); |
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116 | |
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117 | return 0; |
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118 | #else |
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119 | return -1; |
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120 | #endif |
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121 | } |
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122 | |
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123 | int roar_slp_cookie_init (struct roar_slp_cookie * cookie, struct roar_slp_search * search) { |
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124 | if ( cookie == NULL ) |
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125 | return -1; |
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126 | |
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127 | memset(cookie, 0, sizeof(struct roar_slp_cookie)); |
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128 | |
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129 | cookie->search = search; |
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130 | |
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131 | return 0; |
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132 | } |
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133 | |
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134 | |
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135 | char * roar_slp_find_roard (void) { |
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136 | static char addr[80]; |
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137 | |
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138 | if ( roar_slp_find_roard_r(addr, 80) == -1 ) |
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139 | return NULL; |
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140 | |
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141 | return addr; |
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142 | } |
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143 | |
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144 | int roar_slp_find_roard_r (char * addr, size_t len) { |
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145 | struct roar_slp_cookie cookie; |
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146 | int offset = 0; |
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147 | |
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148 | ROAR_DBG("roar_slp_find_roard_r(addr=%p, len=%i) = ?", addr, len); |
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149 | |
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150 | if ( addr == NULL || len == 0 ) |
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151 | return -1; |
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152 | |
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153 | *addr = 0; // just in case... |
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154 | |
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155 | ROAR_DBG("roar_slp_find_roard_r(*) = ?"); |
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156 | |
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157 | if ( roar_slp_cookie_init(&cookie, NULL) == -1 ) |
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158 | return -1; |
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159 | |
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160 | ROAR_DBG("roar_slp_find_roard_r(*) = ?"); |
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161 | |
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162 | if ( roar_slp_search(&cookie, "service:mixer.fellig:roar") == -1 ) |
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163 | return -1; |
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164 | |
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165 | ROAR_DBG("roar_slp_find_roard_r(*) = ?"); |
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166 | |
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167 | if ( cookie.matchcount == 0 ) |
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168 | return -1; |
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169 | |
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170 | ROAR_DBG("roar_slp_find_roard_r(*) = ?"); |
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171 | |
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172 | if ( !strncmp(cookie.match[0].url, "service:mixer.fellig:roar://", 28) ) |
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173 | offset = 28; |
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174 | |
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175 | ROAR_DBG("roar_slp_find_roard_r(*): url='%s'", cookie.match[0].url); |
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176 | |
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177 | strncpy(addr, &(cookie.match[0].url[offset]), len); |
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178 | addr[len-1] = 0; // also just in case. |
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179 | |
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180 | ROAR_DBG("roar_slp_find_roard_r(*): addr='%s'", addr); |
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181 | |
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182 | return 0; |
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183 | } |
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184 | |
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185 | //ll |
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