| 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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