1 | // %flair:license{
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2 | // This file is part of the Flair framework distributed under the
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3 | // CECILL-C License, Version 1.0.
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4 | // %flair:license}
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5 | #include "ConnectionLayout.h"
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6 | #include "UdtSocket.h"
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7 | #include "DataRemote.h"
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8 | #include <qendian.h>
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9 | #include "communication.h"
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10 | #include <zlib.h>
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11 | #include <assert.h>
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12 |
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13 | #define COMPRESS_CHUNK 1024
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14 |
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15 | ConnectionLayout::ConnectionLayout(UdtSocket *socket, QString name)
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16 | : Layout(NULL, name, "root") {
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17 | isRemoteNameDefined = false;
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18 | this->socket = socket;
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19 | }
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20 |
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21 | ConnectionLayout::~ConnectionLayout() {}
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22 |
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23 | void ConnectionLayout::receive(char *buf, int size) {
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24 | // printf("trame %x\n",buf[0]);
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25 | // for(int i=0; i<size;i++) printf("%x ",buf[i]);
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26 | // printf("\n");
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27 | switch (buf[0]) {
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28 | case ZLIB_HEADER: {
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29 | ssize_t out_size;
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30 | char *uncompressbuf;
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31 | uncompressBuffer(buf, size, &uncompressbuf, &out_size);
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32 | handleUncompressedFrame(uncompressbuf, out_size);
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33 | free(uncompressbuf);
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34 | break;
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35 | }
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36 | default:
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37 | handleUncompressedFrame(buf, size);
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38 | }
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39 | free(buf);
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40 | }
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41 |
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42 | void ConnectionLayout::XmlToSend(QDomDocument doc) {
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43 | // printf("xml to send\n%s\n",doc.toString().toLocal8Bit().constData());
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44 | // xml to send a mettre dans le manager
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45 | QMetaObject::invokeMethod(
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46 | socket, "write", Qt::BlockingQueuedConnection,
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47 | Q_ARG(const char *, doc.toString().toLocal8Bit().constData()),
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48 | Q_ARG(qint64, doc.toString().toLocal8Bit().length()));
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49 | }
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50 |
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51 | void ConnectionLayout::LoadXml(QDomDocument to_parse) {
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52 | if (!isRemoteNameDefined) {
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53 | printf("load xml: name not defined!\n");
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54 | return;
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55 | }
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56 |
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57 | QDomElement tmp = to_parse.firstChildElement("root");
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58 | while (tmp.attribute("name") != remoteName && !tmp.isNull())
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59 | tmp = to_parse.nextSiblingElement("root");
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60 |
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61 | if (!tmp.isNull()) {
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62 | XmlWidget::LoadXml(tmp);
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63 | } else {
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64 | printf("%s not found in xml file \n", remoteName.toLocal8Bit().constData());
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65 | }
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66 | }
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67 |
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68 | void ConnectionLayout::handleUncompressedFrame(char *buf, ssize_t size) {
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69 | switch ((unsigned char)buf[0]) {
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70 | case XML_HEADER: {
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71 | QString xml;
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72 | QDomDocument doc;
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73 | xml = QString((char *)buf);
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74 | xml.resize(size);
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75 |
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76 | // printf("recu %i\n%s\n",size,xml.toLocal8Bit().constData());
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77 | if (!doc.setContent(xml)) {
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78 | printf("prob setContent fichier\n");
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79 | }
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80 |
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81 | if (!isRemoteNameDefined) {
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82 | isRemoteNameDefined = true;
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83 | remoteName = doc.firstChildElement("root").attribute("name");
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84 | setRemoteName(remoteName);
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85 | SetAttribute("name", remoteName);
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86 | }
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87 |
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88 | ParseXml(doc.firstChildElement("root").firstChildElement());
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89 | break;
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90 | }
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91 | case DATAS_BIG_ENDIAN: {
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92 | // for(int i=0;i<size;i++) printf("%x ",buf[i]);
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93 | // printf("\n");
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94 | uint16_t period;
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95 | memcpy(&period, &buf[1], sizeof(uint16_t));
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96 | period = qFromBigEndian(period);
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97 | drawDatas(&buf[3], size - 3, period, true);
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98 | break;
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99 | }
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100 | case DATAS_LITTLE_ENDIAN: {
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101 | // for(int i=0;i<size;i++) printf("%x ",buf[i]);
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102 | // printf("\n");
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103 | uint16_t period;
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104 | memcpy(&period, &buf[1], sizeof(uint16_t));
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105 | // printf("recu %i period %i\n",size,period);
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106 | drawDatas(&buf[3], size - 3, period);
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107 | break;
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108 | }
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109 | default:
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110 | printf("trame non supportée %x\n", buf[0]);
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111 | }
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112 | }
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113 |
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114 | void ConnectionLayout::removeDataRemote(DataRemote *data) {
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115 | dataremotes.removeOne(data);
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116 | }
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117 |
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118 | void ConnectionLayout::addDataRemote(DataRemote *data) {
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119 | dataremotes.append(data);
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120 | }
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121 |
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122 | QString ConnectionLayout::getRemoteName() { return remoteName; }
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123 | void ConnectionLayout::drawDatas(char *buf, int buf_size, uint16_t period,
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124 | bool big_endian) {
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125 | for (int i = 0; i < dataremotes.count(); i++) {
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126 | dataremotes.at(i)->BufEvent(&buf, &buf_size, period, big_endian);
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127 | }
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128 | }
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129 |
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130 | int ConnectionLayout::uncompressBuffer(char *in, ssize_t in_size, char **out,
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131 | ssize_t *out_size) {
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132 | int ret;
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133 | unsigned have;
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134 | z_stream strm;
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135 |
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136 | // allocate inflate state
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137 | strm.zalloc = Z_NULL;
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138 | strm.zfree = Z_NULL;
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139 | strm.opaque = Z_NULL;
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140 | strm.avail_in = 0;
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141 | strm.next_in = Z_NULL;
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142 | ret = inflateInit(&strm);
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143 | if (ret != Z_OK)
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144 | return ret;
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145 |
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146 | *out = (char *)malloc(COMPRESS_CHUNK);
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147 | if (!(*out))
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148 | return Z_BUF_ERROR;
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149 |
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150 | strm.avail_in = in_size;
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151 | strm.next_in = (unsigned char *)in;
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152 | strm.avail_out = COMPRESS_CHUNK;
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153 | strm.next_out = (unsigned char *)*out;
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154 |
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155 | ret = inflate(&strm, Z_NO_FLUSH);
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156 | assert(ret != Z_STREAM_ERROR); // state not clobbered
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157 | switch (ret) {
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158 | case Z_NEED_DICT:
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159 | ret = Z_DATA_ERROR; // and fall through
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160 | case Z_DATA_ERROR:
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161 | case Z_MEM_ERROR:
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162 | (void)inflateEnd(&strm);
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163 | return ret;
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164 | }
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165 | have = COMPRESS_CHUNK - strm.avail_out;
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166 | *out_size = have;
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167 |
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168 | // printf("%i -> %i\n",in_size,have);
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169 | // printf("%s\n",*out);
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170 | // clean up and return
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171 | (void)inflateEnd(&strm);
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172 | return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
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173 | }
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