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3666 | mejdrech | 1 | /* |
2 | * Copyright (c) 2008 Lukas Mejdrech |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup net |
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30 | * @{ |
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31 | */ |
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32 | |||
33 | /** |
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34 | * @file |
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35 | */ |
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36 | |||
37 | #include <errno.h> |
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38 | #include <malloc.h> |
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3685 | mejdrech | 39 | #include <stdio.h> |
3666 | mejdrech | 40 | #include <string.h> |
41 | #include <unistd.h> |
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42 | #include <ipc/ipc.h> |
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43 | |||
44 | #include "err.h" |
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45 | #include "measured_strings.h" |
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46 | #include "modules.h" |
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47 | |||
48 | size_t * prepare_lengths( measured_string_ref strings, size_t count ); |
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49 | |||
50 | measured_string_ref measured_string_create_bulk( const char * string, size_t length ){ |
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51 | measured_string_ref new; |
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52 | |||
53 | if( length == 0 ){ |
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54 | while( string[ length ] ) ++ length; |
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55 | } |
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56 | new = ( measured_string_ref ) malloc( sizeof( measured_string_t ) + ( sizeof( char ) * ( length + 1 ))); |
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57 | if( ! new ) return NULL; |
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58 | new->length = length; |
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59 | new->value = (( char * ) new ) + sizeof( measured_string_t ); |
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60 | memcpy( new->value, string, new->length + 1 ); |
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61 | return new; |
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62 | } |
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63 | |||
64 | int measured_strings_receive( measured_string_ref * strings, char ** data, size_t count ){ |
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65 | ERROR_DECLARE; |
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66 | |||
67 | size_t * lengths; |
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68 | int index; |
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69 | size_t length; |
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70 | char * next; |
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71 | ipc_callid_t callid; |
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72 | |||
3685 | mejdrech | 73 | if(( ! strings ) || ( ! data ) || ( count <= 0 )){ |
3666 | mejdrech | 74 | return EINVAL; |
75 | } |
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76 | lengths = ( size_t * ) malloc( sizeof( size_t ) * ( count + 1 )); |
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77 | if( ! lengths ) return ENOMEM; |
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3685 | mejdrech | 78 | if(( ! ipc_data_write_receive( & callid, & length )) |
79 | || ( length != sizeof( size_t ) * ( count + 1 ))){ |
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3666 | mejdrech | 80 | free( lengths ); |
81 | return EINVAL; |
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82 | } |
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83 | if( ERROR_OCCURED( ipc_data_write_finalize( callid, lengths, sizeof( size_t ) * ( count + 1 )))){ |
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84 | free( lengths ); |
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85 | return ERROR_CODE; |
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86 | } |
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87 | * data = malloc( lengths[ count ] ); |
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88 | if( !( * data )) return ENOMEM; |
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3685 | mejdrech | 89 | ( * data )[ lengths[ count ] - 1 ] = '\0'; |
3666 | mejdrech | 90 | * strings = ( measured_string_ref ) malloc( sizeof( measured_string_t ) * count ); |
91 | if( !( * strings )){ |
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92 | free( lengths ); |
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93 | free( * data ); |
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94 | return ENOMEM; |
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95 | } |
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96 | next = * data; |
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97 | for( index = 0; index < count; ++ index ){ |
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98 | ( * strings)[ index ].length = lengths[ index ]; |
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99 | if( lengths[ index ] > 0 ){ |
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3685 | mejdrech | 100 | if(( ! ipc_data_write_receive( & callid, & length )) |
101 | || ( length != lengths[ index ] )){ |
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3666 | mejdrech | 102 | free( * data ); |
103 | free( * strings ); |
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104 | free( lengths ); |
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105 | return EINVAL; |
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106 | } |
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107 | ERROR_PROPAGATE( ipc_data_write_finalize( callid, next, lengths[ index ] )); |
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3685 | mejdrech | 108 | ( * strings)[ index ].value = next; |
3666 | mejdrech | 109 | next += lengths[ index ]; |
110 | * next = '\0'; |
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111 | ++ next; |
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112 | }else{ |
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113 | ( * strings )[ index ].value = NULL; |
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114 | } |
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115 | } |
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116 | free( lengths ); |
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117 | return EOK; |
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118 | } |
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119 | |||
120 | int measured_strings_reply( measured_string_ref strings, size_t count ){ |
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121 | ERROR_DECLARE; |
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122 | |||
123 | size_t * lengths; |
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124 | int index; |
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125 | size_t length; |
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126 | ipc_callid_t callid; |
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127 | |||
128 | if(( ! strings ) || ( count <= 0 )){ |
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129 | return EINVAL; |
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130 | } |
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131 | lengths = prepare_lengths( strings, count ); |
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132 | if( ! lengths ) return ENOMEM; |
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3685 | mejdrech | 133 | if(( ! ipc_data_read_receive( & callid, & length )) |
134 | || ( length != sizeof( size_t ) * ( count + 1 ))){ |
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3666 | mejdrech | 135 | free( lengths ); |
136 | return EINVAL; |
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137 | } |
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138 | if( ERROR_OCCURED( ipc_data_read_finalize( callid, lengths, sizeof( size_t ) * ( count + 1 )))){ |
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139 | free( lengths ); |
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140 | return ERROR_CODE; |
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141 | } |
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142 | free( lengths ); |
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143 | for( index = 0; index < count; ++ index ){ |
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144 | if( strings[ index ].length > 0 ){ |
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3685 | mejdrech | 145 | if(( ! ipc_data_read_receive( & callid, & length )) |
146 | || ( length != strings[ index ].length )){ |
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3666 | mejdrech | 147 | return EINVAL; |
148 | } |
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149 | ERROR_PROPAGATE( ipc_data_read_finalize( callid, strings[ index ].value, strings[ index ].length )); |
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150 | } |
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151 | } |
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152 | return EOK; |
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153 | } |
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154 | |||
155 | int measured_strings_return( int phone, measured_string_ref * strings, char ** data, size_t count ){ |
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156 | ERROR_DECLARE; |
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157 | |||
158 | size_t * lengths; |
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159 | int index; |
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160 | char * next; |
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161 | |||
3685 | mejdrech | 162 | if(( phone <= 0 ) || ( ! strings ) || ( ! data ) || ( count <= 0 )){ |
3666 | mejdrech | 163 | return EINVAL; |
164 | } |
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165 | lengths = ( size_t * ) malloc( sizeof( size_t ) * ( count + 1 )); |
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166 | if( ! lengths ) return ENOMEM; |
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167 | if( ERROR_OCCURED( ipc_data_read_start( phone, lengths, sizeof( size_t ) * ( count + 1 )))){ |
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168 | free( lengths ); |
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169 | return ERROR_CODE; |
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170 | } |
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171 | * data = malloc( lengths[ count ] ); |
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172 | if( !( * data )) return ENOMEM; |
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173 | * strings = ( measured_string_ref ) malloc( sizeof( measured_string_t ) * count ); |
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174 | if( !( * strings )){ |
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175 | free( lengths ); |
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176 | free( * data ); |
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177 | return ENOMEM; |
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178 | } |
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179 | next = * data; |
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180 | for( index = 0; index < count; ++ index ){ |
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181 | ( * strings )[ index ].length = lengths[ index ]; |
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182 | if( lengths[ index ] > 0 ){ |
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3685 | mejdrech | 183 | ERROR_PROPAGATE( ipc_data_read_start( phone, next, lengths[ index ] )); |
3666 | mejdrech | 184 | ( * strings )[ index ].value = next; |
185 | next += lengths[ index ]; |
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186 | * next = '\0'; |
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187 | ++ next; |
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188 | }else{ |
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189 | ( * strings )[ index ].value = NULL; |
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190 | } |
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191 | } |
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192 | free( lengths ); |
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193 | return EOK; |
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194 | } |
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195 | |||
196 | int measured_strings_send( int phone, measured_string_ref strings, size_t count ){ |
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197 | ERROR_DECLARE; |
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198 | |||
199 | size_t * lengths; |
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200 | int index; |
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201 | |||
202 | if(( phone <= 0 ) || ( ! strings ) || ( count <= 0 )){ |
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203 | return EINVAL; |
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204 | } |
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205 | lengths = prepare_lengths( strings, count ); |
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206 | if( ! lengths ) return ENOMEM; |
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207 | if( ERROR_OCCURED( ipc_data_write_start( phone, lengths, sizeof( size_t ) * ( count + 1 )))){ |
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208 | free( lengths ); |
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209 | return ERROR_CODE; |
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210 | } |
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211 | free( lengths ); |
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212 | for( index = 0; index < count; ++ index ){ |
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213 | if( strings[ index ].length > 0 ){ |
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3685 | mejdrech | 214 | ERROR_PROPAGATE( ipc_data_write_start( phone, strings[ index ].value, strings[ index ].length )); |
3666 | mejdrech | 215 | } |
216 | } |
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217 | return EOK; |
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218 | } |
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219 | |||
220 | size_t * prepare_lengths( measured_string_ref strings, size_t count ){ |
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221 | size_t * lengths; |
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222 | int index; |
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223 | size_t length; |
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224 | |||
225 | lengths = ( size_t * ) malloc( sizeof( size_t ) * ( count + 1 )); |
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226 | if( ! lengths ) return NULL; |
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227 | length = 0; |
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228 | for( index = 0; index < count; ++ index ){ |
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229 | lengths[ index ] = strings[ index ].length; |
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230 | length += lengths[ index ] + 1; |
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231 | } |
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232 | lengths[ count ] = length; |
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233 | return lengths; |
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234 | } |
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235 | |||
236 | /** @} |
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237 | */ |
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238 |