1 | //vio_proto.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2010 |
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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, 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 | int roar_vio_proto_init_def (struct roar_vio_defaults * def, char * dstr, int proto, struct roar_vio_defaults * odef) { |
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39 | #ifndef ROAR_WITHOUT_VIO_PROTO |
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40 | int port = 0; |
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41 | int ret; |
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42 | char * ed; |
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43 | |
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44 | if ( def == NULL ) |
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45 | return -1; |
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46 | |
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47 | switch (proto) { |
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48 | case ROAR_VIO_PROTO_P_HTTP: port = 80; break; |
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49 | case ROAR_VIO_PROTO_P_GOPHER: port = 70; break; |
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50 | case ROAR_VIO_PROTO_P_ICY: port = 8000; break; |
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51 | default: |
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52 | return -1; |
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53 | } |
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54 | |
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55 | if ( dstr == NULL ) |
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56 | dstr = "//"; |
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57 | |
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58 | if ( roar_vio_dstr_init_defaults(def, ROAR_VIO_DEF_TYPE_SOCKET, O_RDWR, 0644) == -1 ) |
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59 | return -1; |
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60 | |
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61 | if ( roar_vio_socket_init_tcp4_def(def, "localhost", port) == -1 ) |
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62 | return -1; |
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63 | |
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64 | if ( !strncmp(dstr, "//", 2) ) |
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65 | dstr += 2; |
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66 | |
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67 | if ( (ed = strstr(dstr, "/")) != NULL ) |
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68 | *ed = 0; |
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69 | |
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70 | ROAR_DBG("roar_vio_proto_init_def(*): def->o_flags=%i", def->o_flags); |
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71 | |
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72 | ret = roar_vio_socket_init_dstr_def(def, dstr, -1, SOCK_STREAM, def); |
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73 | |
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74 | ROAR_DBG("roar_vio_proto_init_def(*): def->o_flags=%i", def->o_flags); |
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75 | |
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76 | if ( ed != NULL ) |
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77 | *ed = '/'; |
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78 | |
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79 | ROAR_DBG("roar_vio_proto_init_def(*): dstr='%s'", dstr); |
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80 | |
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81 | return ret; |
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82 | #else |
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83 | return -1; |
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84 | #endif |
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85 | } |
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86 | |
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87 | int roar_vio_open_proto (struct roar_vio_calls * calls, struct roar_vio_calls * dst, |
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88 | char * dstr, int proto, struct roar_vio_defaults * odef) { |
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89 | #ifndef ROAR_WITHOUT_VIO_PROTO |
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90 | struct roar_vio_proto * self; |
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91 | char * host; |
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92 | char * tmp; |
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93 | |
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94 | ROAR_DBG("roar_vio_open_proto(calls=%p, dst=%p, dstr='%s', proto=%i, odef=%p) = ?", calls, dst, dstr, proto, odef); |
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95 | |
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96 | if ( calls == NULL || dst == NULL || odef == NULL ) |
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97 | return -1; |
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98 | |
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99 | ROAR_DBG("roar_vio_open_proto(*): odef->o_flags=%i", odef->o_flags); |
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100 | ROAR_DBG("roar_vio_open_proto(*) = ?"); |
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101 | |
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102 | if ( (self = roar_mm_malloc(sizeof(struct roar_vio_proto))) == NULL ) |
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103 | return -1; |
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104 | |
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105 | memset(self, 0, sizeof(struct roar_vio_proto)); |
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106 | |
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107 | self->next = dst; |
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108 | |
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109 | calls->inst = self; |
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110 | |
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111 | calls->read = roar_vio_proto_read; |
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112 | calls->write = roar_vio_proto_write; |
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113 | // calls->lseek = roar_vio_proto_lseek; // TODO: this is currently not supported |
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114 | calls->nonblock = roar_vio_proto_nonblock; |
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115 | calls->sync = roar_vio_proto_sync; |
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116 | calls->ctl = roar_vio_proto_ctl; |
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117 | calls->close = roar_vio_proto_close; |
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118 | |
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119 | ROAR_DBG("roar_vio_open_proto(*) = ?"); |
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120 | |
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121 | if ( dstr != NULL ) { |
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122 | dstr += 2; |
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123 | host = dstr; |
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124 | |
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125 | if ( (tmp = strstr(dstr, "/")) == NULL ) |
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126 | return -1; |
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127 | |
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128 | *tmp++ = 0; |
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129 | dstr = tmp; |
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130 | |
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131 | if ( (tmp = strstr(dstr, "#")) != NULL ) |
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132 | *tmp = 0; |
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133 | } else { |
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134 | ROAR_DBG("roar_vio_open_proto(*): no dstr!, odef->type=%i", odef->type); |
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135 | if ( odef->type == ROAR_VIO_DEF_TYPE_FILE ) { |
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136 | dstr = odef->d.file; |
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137 | host = "localhost"; |
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138 | |
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139 | for (; *dstr == '/'; dstr++); |
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140 | |
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141 | } else if ( odef->type == ROAR_VIO_DEF_TYPE_SOCKET ) { |
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142 | dstr = ""; // index document |
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143 | host = odef->d.socket.host; |
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144 | } else { |
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145 | return -1; |
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146 | } |
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147 | } |
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148 | |
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149 | ROAR_DBG("roar_vio_open_proto(*) = ?"); |
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150 | ROAR_DBG("roar_vio_open_proto(*): proto=%i, host='%s', file='%s'", proto, host, dstr); |
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151 | |
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152 | switch (proto) { |
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153 | case ROAR_VIO_PROTO_P_HTTP: |
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154 | case ROAR_VIO_PROTO_P_ICY: |
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155 | return roar_vio_open_proto_http(calls, dst, host, dstr); |
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156 | break; |
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157 | case ROAR_VIO_PROTO_P_GOPHER: |
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158 | return roar_vio_open_proto_gopher(calls, dst, host, dstr); |
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159 | break; |
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160 | } |
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161 | |
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162 | ROAR_DBG("roar_vio_open_proto(*) = -1 // no matching protocol"); |
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163 | return -1; |
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164 | #else |
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165 | return -1; |
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166 | #endif |
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167 | } |
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168 | |
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169 | #ifndef ROAR_WITHOUT_VIO_PROTO |
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170 | ssize_t roar_vio_proto_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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171 | struct roar_vio_proto * self = vio->inst; |
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172 | ssize_t ret; |
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173 | ssize_t have = 0; |
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174 | size_t len; |
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175 | |
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176 | if ( self->reader.buffer != NULL ) { |
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177 | len = count; |
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178 | if ( roar_buffer_shift_out(&(self->reader.buffer), buf, &len) == -1 ) { |
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179 | // This is very bad. |
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180 | return -1; |
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181 | } |
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182 | |
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183 | if ( len ) { |
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184 | have = len; |
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185 | buf += len; |
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186 | count -= len; |
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187 | } |
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188 | } |
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189 | |
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190 | if ( count == 0 ) |
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191 | return have; |
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192 | |
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193 | ROAR_DBG("roar_vio_proto_read(*): have=%lli, count=%lli", (long long int)have, (long long int)count); |
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194 | |
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195 | if ( (ret = roar_vio_read(self->next, buf, count)) == -1 ) |
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196 | return ret; |
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197 | |
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198 | return have + ret; |
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199 | } |
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200 | |
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201 | ssize_t roar_vio_proto_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
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202 | struct roar_vio_proto * self = vio->inst; |
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203 | |
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204 | return roar_vio_write(self->next, buf, count); |
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205 | } |
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206 | |
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207 | // TODO: this is currently not implemented as this is hard to implement with buffers: |
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208 | off_t roar_vio_proto_lseek (struct roar_vio_calls * vio, off_t offset, int whence); |
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209 | |
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210 | int roar_vio_proto_nonblock(struct roar_vio_calls * vio, int state) { |
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211 | struct roar_vio_proto * self = vio->inst; |
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212 | |
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213 | /* we can simply use the next layer's nonblock as all we do in addtion * |
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214 | * to call there functions are our buffers which do not block normaly */ |
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215 | |
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216 | return roar_vio_nonblock(self->next, state); |
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217 | } |
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218 | |
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219 | int roar_vio_proto_sync (struct roar_vio_calls * vio) { |
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220 | struct roar_vio_proto * self = vio->inst; |
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221 | |
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222 | return roar_vio_sync(self->next); |
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223 | } |
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224 | |
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225 | int roar_vio_proto_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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226 | struct roar_vio_proto * self = vio->inst; |
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227 | |
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228 | if (vio == NULL || cmd == -1) |
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229 | return -1; |
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230 | |
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231 | ROAR_DBG("roar_vio_proto_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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232 | |
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233 | switch (cmd) { |
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234 | case ROAR_VIO_CTL_GET_NAME: |
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235 | if ( data == NULL ) |
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236 | return -1; |
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237 | |
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238 | *(char**)data = "proto"; |
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239 | return 0; |
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240 | break; |
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241 | case ROAR_VIO_CTL_GET_NEXT: |
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242 | *(struct roar_vio_calls **)data = self->next; |
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243 | return 0; |
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244 | break; |
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245 | case ROAR_VIO_CTL_SET_NEXT: |
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246 | self->next = *(struct roar_vio_calls **)data; |
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247 | return 0; |
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248 | break; |
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249 | } |
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250 | |
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251 | return roar_vio_ctl(self->next, cmd, data); |
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252 | } |
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253 | |
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254 | int roar_vio_proto_close (struct roar_vio_calls * vio) { |
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255 | struct roar_vio_proto * self = vio->inst; |
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256 | |
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257 | if ( roar_vio_close(self->next) == -1 ) |
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258 | return -1; |
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259 | |
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260 | roar_mm_free(self); |
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261 | |
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262 | return 0; |
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263 | } |
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264 | |
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265 | |
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266 | int roar_vio_open_proto_http (struct roar_vio_calls * calls, struct roar_vio_calls * dst, char * host, char * file) { |
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267 | struct roar_vio_proto * self; |
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268 | struct roar_buffer * bufbuf; |
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269 | void * vpbuf; |
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270 | char * buf; |
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271 | char * endofheader = NULL; |
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272 | char b0[80], b1[80]; |
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273 | int status; |
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274 | int len; |
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275 | |
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276 | ROAR_DBG("roar_vio_open_proto_http(calls=%p, dst=%p, host='%s', file='%s') = ?", calls, dst, host, file); |
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277 | |
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278 | if ( calls == NULL || dst == NULL || host == NULL || file == NULL ) |
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279 | return -1; |
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280 | |
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281 | self = calls->inst; |
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282 | calls->write = NULL; // Disable write as we do not support this |
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283 | |
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284 | if ( roar_buffer_new_data(&bufbuf, 1024, &vpbuf) == -1 ) |
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285 | return -1; |
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286 | |
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287 | buf = vpbuf; |
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288 | |
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289 | ROAR_DBG("roar_vio_open_proto_http(calls=%p, dst=%p, host='%s', file='%s') = ?", calls, dst, host, file); |
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290 | |
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291 | roar_vio_printf(dst, "GET /%s HTTP/1.1\r\n", file); |
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292 | roar_vio_printf(dst, "Host: %s\r\n", host); |
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293 | roar_vio_printf(dst, "User-Agent: roar_vio_open_proto_http() $Revision$\r\n"); |
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294 | roar_vio_printf(dst, "Connection: close\r\n"); |
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295 | roar_vio_printf(dst, "\r\n"); |
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296 | |
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297 | ROAR_DBG("roar_vio_open_proto_http(*) = ?"); |
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298 | |
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299 | roar_vio_sync(dst); |
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300 | |
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301 | ROAR_DBG("roar_vio_open_proto_http(*) = ?"); |
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302 | |
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303 | if ( (len = roar_vio_read(dst, buf, 1023)) < 1 ) { |
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304 | ROAR_DBG("roar_vio_open_proto_http(*) = -1"); |
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305 | roar_buffer_free(bufbuf); |
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306 | return -1; |
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307 | } |
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308 | |
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309 | buf[len] = 0; |
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310 | |
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311 | ROAR_DBG("roar_vio_open_proto_http(*) = ?"); |
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312 | |
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313 | if ( sscanf(buf, "%79s %i %79s\n", b0, &status, b1) != 3 ) { |
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314 | ROAR_DBG("roar_vio_open_proto_http(*) = -1"); |
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315 | roar_buffer_free(bufbuf); |
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316 | return -1; |
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317 | } |
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318 | |
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319 | ROAR_DBG("roar_vio_open_proto_http(*) = ?"); |
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320 | |
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321 | if ( status != 200 ) { |
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322 | ROAR_DBG("roar_vio_open_proto_http(*) = -1 // status=%i", status); |
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323 | roar_buffer_free(bufbuf); |
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324 | return -1; |
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325 | } |
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326 | |
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327 | ROAR_DBG("roar_vio_open_proto_http(*): status=%i", status); |
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328 | // ROAR_WARN("roar_vio_open_proto_http(*): buf='%s'", buf); |
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329 | |
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330 | endofheader = strstr(buf, "\r\n\r\n"); |
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331 | |
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332 | ROAR_DBG("roar_vio_open_proto_http(*): endofheader=%p\n", endofheader); |
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333 | |
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334 | while ( endofheader == NULL ) { |
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335 | if ( (len = roar_vio_read(dst, buf, 1023)) < 1 ) |
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336 | return -1; |
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337 | |
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338 | buf[len] = 0; |
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339 | endofheader = strstr(buf, "\r\n\r\n"); |
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340 | ROAR_DBG("roar_vio_open_proto_http(*): endofheader=%p\n", endofheader); |
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341 | } |
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342 | |
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343 | ROAR_DBG("roar_vio_open_proto_http(*): endofheader=%p\n", endofheader); |
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344 | ROAR_DBG("roar_vio_open_proto_http(*): buf=%p\n", buf); |
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345 | |
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346 | if ( (endofheader - buf) == (len - 4) ) { |
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347 | roar_buffer_free(bufbuf); |
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348 | bufbuf = NULL; |
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349 | } |
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350 | |
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351 | if ( bufbuf != NULL ) { |
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352 | roar_buffer_set_offset(bufbuf, endofheader - buf + 4); |
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353 | roar_buffer_set_len(bufbuf, len - (endofheader - buf + 4) - 1); |
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354 | } |
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355 | self->reader.buffer = bufbuf; |
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356 | |
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357 | /* |
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358 | if ( !strcmp((buf+len)-4, "\r\n\r\n") ) |
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359 | return 0; |
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360 | |
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361 | while (*buf != '\r' && *buf != '\n') { |
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362 | if ( (len = roar_vio_read(dst, buf, 1023)) < 1 ) |
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363 | return -1; |
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364 | } |
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365 | */ |
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366 | |
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367 | return 0; |
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368 | } |
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369 | |
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370 | int roar_vio_open_proto_gopher (struct roar_vio_calls * calls, struct roar_vio_calls * dst, char * host, char * file) { |
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371 | if ( calls == NULL || dst == NULL || host == NULL || file == NULL ) |
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372 | return -1; |
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373 | |
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374 | calls->write = NULL; // Disable write as we do not support this |
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375 | |
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376 | ROAR_DBG("roar_vio_open_proto_gopher(calls=%p, dst=%p, host='%s', file='%s') = ?", calls, dst, host, file); |
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377 | |
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378 | if ( file[1] == '/' ) |
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379 | file += 2; |
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380 | |
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381 | roar_vio_printf(dst, "/%s\r\n", file); |
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382 | |
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383 | roar_vio_sync(dst); // for encryption/compression layers |
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384 | |
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385 | return 0; |
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386 | } |
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387 | #endif |
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388 | |
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389 | //ll |
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