| 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 |
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| 16 | ConnectionLayout::ConnectionLayout(UdtSocket* socket,QString name): 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 |
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| 24 | void ConnectionLayout::receive(char* buf,int size) {
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| 25 | //printf("trame %x\n",buf[0]);
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| 26 | //for(int i=0; i<size;i++) printf("%x ",buf[i]);
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| 27 | //printf("\n");
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| 28 | switch(buf[0]) {
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| 29 | case ZLIB_HEADER: {
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| 30 | ssize_t out_size;
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| 31 | char* uncompressbuf;
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| 32 | uncompressBuffer(buf,size,&uncompressbuf,&out_size);
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| 33 | handleUncompressedFrame(uncompressbuf,out_size);
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| 34 | free(uncompressbuf);
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| 35 | break;
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| 36 | }
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| 37 | default:
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| 38 | handleUncompressedFrame(buf,size);
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| 39 | }
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| 40 | free(buf);
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| 41 | }
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| 42 |
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| 43 | void ConnectionLayout::XmlToSend(QDomDocument doc) {
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| 44 | //printf("xml to send\n%s\n",doc.toString().toLocal8Bit().constData());
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| 45 | //xml to send a mettre dans le manager
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| 46 | QMetaObject::invokeMethod(socket,
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| 47 | "write",
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| 48 | Qt::BlockingQueuedConnection,
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| 49 | Q_ARG(const char*,doc.toString().toLocal8Bit().constData()),
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| 50 | Q_ARG(qint64,doc.toString().toLocal8Bit().length()));
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| 51 |
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| 52 | }
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| 53 |
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| 54 | void ConnectionLayout::LoadXml(QDomDocument to_parse) {
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| 55 | if(!isRemoteNameDefined) {
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| 56 | printf("load xml: name not defined!\n");
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| 57 | return;
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| 58 | }
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| 59 |
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| 60 | QDomElement tmp=to_parse.firstChildElement("root");
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| 61 | while(tmp.attribute("name")!=remoteName && !tmp.isNull()) tmp=to_parse.nextSiblingElement("root");
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| 62 |
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| 63 | if(!tmp.isNull()) {
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| 64 | XmlWidget::LoadXml(tmp);
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| 65 | } else {
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| 66 | printf("%s not found in xml file \n",remoteName.toLocal8Bit().constData());
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | void ConnectionLayout::handleUncompressedFrame(char *buf,ssize_t size) {
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| 71 | switch((unsigned char)buf[0]) {
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| 72 | case XML_HEADER: {
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| 73 | QString xml;
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| 74 | QDomDocument doc;
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| 75 | xml=QString((char*)buf);
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| 76 | xml.resize(size);
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| 77 |
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| 78 | //printf("recu %i\n%s\n",size,xml.toLocal8Bit().constData());
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| 79 | if(!doc.setContent(xml)) {
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| 80 | printf("prob setContent fichier\n");
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| 81 | }
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| 82 |
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| 83 | if(!isRemoteNameDefined) {
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| 84 | isRemoteNameDefined=true;
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| 85 | remoteName=doc.firstChildElement("root").attribute("name");
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| 86 | setRemoteName(remoteName);
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| 87 | SetAttribute("name",remoteName);
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| 88 | }
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| 89 |
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| 90 | ParseXml(doc.firstChildElement("root").firstChildElement());
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| 91 | break;
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| 92 | }
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| 93 | case DATAS_BIG_ENDIAN: {
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| 94 | //for(int i=0;i<size;i++) printf("%x ",buf[i]);
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| 95 | //printf("\n");
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| 96 | uint16_t period;
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| 97 | memcpy(&period,&buf[1],sizeof(uint16_t));
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| 98 | period=qFromBigEndian(period);
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| 99 | drawDatas(&buf[3],size-3,period,true);
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| 100 | break;
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| 101 | }
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| 102 | case DATAS_LITTLE_ENDIAN: {
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| 103 | //for(int i=0;i<size;i++) printf("%x ",buf[i]);
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| 104 | //printf("\n");
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| 105 | uint16_t period;
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| 106 | memcpy(&period,&buf[1],sizeof(uint16_t));
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| 107 | //printf("recu %i period %i\n",size,period);
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| 108 | drawDatas(&buf[3],size-3,period);
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| 109 | break;
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| 110 | }
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| 111 | default:
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| 112 | printf("trame non supportée %x\n",buf[0]);
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| 113 | }
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| 114 | }
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| 115 |
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| 116 | void ConnectionLayout::removeDataRemote(DataRemote* data) {
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| 117 | dataremotes.removeOne(data);
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| 118 | }
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| 119 |
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| 120 | void ConnectionLayout::addDataRemote(DataRemote* data) {
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| 121 | dataremotes.append(data);
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| 122 | }
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| 123 |
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| 124 | QString ConnectionLayout::getRemoteName() {
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| 125 | return remoteName;
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| 126 | }
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| 127 | void ConnectionLayout::drawDatas(char* buf,int buf_size,uint16_t period,bool big_endian) {
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| 128 | for(int i=0;i<dataremotes.count();i++) {
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| 129 | dataremotes.at(i)->BufEvent(&buf,&buf_size,period,big_endian);
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| 130 | }
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| 131 | }
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| 132 |
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| 133 | int ConnectionLayout::uncompressBuffer(char *in, ssize_t in_size,char **out,ssize_t *out_size) {
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| 134 | int ret;
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| 135 | unsigned have;
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| 136 | z_stream strm;
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| 137 |
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| 138 | // allocate inflate state
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| 139 | strm.zalloc = Z_NULL;
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| 140 | strm.zfree = Z_NULL;
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| 141 | strm.opaque = Z_NULL;
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| 142 | strm.avail_in = 0;
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| 143 | strm.next_in = Z_NULL;
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| 144 | ret = inflateInit(&strm);
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| 145 | if (ret != Z_OK)
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| 146 | return ret;
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| 147 |
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| 148 | *out=(char*)malloc(COMPRESS_CHUNK);
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| 149 | if(!(*out))
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| 150 | return Z_BUF_ERROR;
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| 151 |
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| 152 | strm.avail_in = in_size;
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| 153 | strm.next_in = (unsigned char*)in;
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| 154 | strm.avail_out = COMPRESS_CHUNK;
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| 155 | strm.next_out = (unsigned char*)*out;
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| 156 |
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| 157 | ret = inflate(&strm, Z_NO_FLUSH);
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| 158 | assert(ret != Z_STREAM_ERROR); // state not clobbered
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| 159 | switch (ret) {
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| 160 | case Z_NEED_DICT:
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| 161 | ret = Z_DATA_ERROR; // and fall through
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| 162 | case Z_DATA_ERROR:
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| 163 | case Z_MEM_ERROR:
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| 164 | (void)inflateEnd(&strm);
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| 165 | return ret;
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| 166 | }
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| 167 | have = COMPRESS_CHUNK- strm.avail_out;
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| 168 | *out_size=have;
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| 169 |
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| 170 | //printf("%i -> %i\n",in_size,have);
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| 171 | //printf("%s\n",*out);
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| 172 | // clean up and return
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| 173 | (void)inflateEnd(&strm);
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| 174 | return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
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| 175 | }
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