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untested sdp parser

This commit is contained in:
Daniel Gultsch 2020-04-04 10:45:42 +02:00
parent 766d1d603e
commit e2e4390d51
4 changed files with 231 additions and 11 deletions
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46
src/main/java/eu/siacs/conversations/xmpp/jingle/MediaBuilder.java Normal file
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package eu.siacs.conversations.xmpp.jingle;
import java.util.List;
public class MediaBuilder {
private String media;
private int port;
private String protocol;
private List<Integer> formats;
private String connectionData;
private List<SessionDescription.Attribute> attributes;
public MediaBuilder setMedia(String media) {
this.media = media;
return this;
}
public MediaBuilder setPort(int port) {
this.port = port;
return this;
}
public MediaBuilder setProtocol(String protocol) {
this.protocol = protocol;
return this;
}
public MediaBuilder setFormats(List<Integer> formats) {
this.formats = formats;
return this;
}
public MediaBuilder setConnectionData(String connectionData) {
this.connectionData = connectionData;
return this;
}
public MediaBuilder setAttributes(List<SessionDescription.Attribute> attributes) {
this.attributes = attributes;
return this;
}
public SessionDescription.Media createMedia() {
return new SessionDescription.Media(media, port, protocol, formats, connectionData, attributes);
}
}

11
src/main/java/eu/siacs/conversations/xmpp/jingle/SdpUtils.java
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@ -1,11 +0,0 @@
package eu.siacs.conversations.xmpp.jingle;
import java.util.Map;
public class SdpUtils {
public static String toSdpString(Map<String, JingleRtpConnection.DescriptionTransport> contents) {
return "";
}
}

145
src/main/java/eu/siacs/conversations/xmpp/jingle/SessionDescription.java Normal file
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package eu.siacs.conversations.xmpp.jingle;
import android.util.Log;
import com.google.common.collect.ImmutableList;
import java.util.List;
import java.util.Map;
import eu.siacs.conversations.Config;
public class SessionDescription {
private final int version;
private final String name;
private final String connectionData;
private final List<Attribute> attributes;
private final List<Media> media;
public SessionDescription(int version, String name, String connectionData, List<Attribute> attributes, List<Media> media) {
this.version = version;
this.name = name;
this.connectionData = connectionData;
this.attributes = attributes;
this.media = media;
}
public static SessionDescription parse(final Map<String, JingleRtpConnection.DescriptionTransport> contents) {
final SessionDescriptionBuilder sessionDescriptionBuilder = new SessionDescriptionBuilder();
return sessionDescriptionBuilder.createSessionDescription();
}
public static SessionDescription parse(final String input) {
final SessionDescriptionBuilder sessionDescriptionBuilder = new SessionDescriptionBuilder();
MediaBuilder currentMediaBuilder = null;
ImmutableList.Builder<Attribute> attributeBuilder = new ImmutableList.Builder<>();
ImmutableList.Builder<Media> mediaBuilder = new ImmutableList.Builder<>();
for(final String line : input.split("\n")) {
final String[] pair = line.split("=",2);
if (pair.length < 2 || pair[0].length() != 1) {
Log.d(Config.LOGTAG,"skipping sdp parsing on line "+line);
continue;
}
final char key = pair[0].charAt(0);
final String value = pair[1];
switch (key) {
case 'v':
sessionDescriptionBuilder.setVersion(ignorantIntParser(value));
break;
case 'c':
if (currentMediaBuilder != null) {
currentMediaBuilder.setConnectionData(value);
} else {
sessionDescriptionBuilder.setConnectionData(value);
}
break;
case 's':
sessionDescriptionBuilder.setName(value);
break;
case 'a':
attributeBuilder.add(Attribute.parse(value));
break;
case 'm':
if (currentMediaBuilder == null) {
sessionDescriptionBuilder.setAttributes(attributeBuilder.build());;
} else {
currentMediaBuilder.setAttributes(attributeBuilder.build());
mediaBuilder.add(currentMediaBuilder.createMedia());
}
attributeBuilder = new ImmutableList.Builder<>();
currentMediaBuilder = new MediaBuilder();
final String[] parts = value.split(" ");
if (parts.length >= 3) {
currentMediaBuilder.setMedia(parts[0]);
currentMediaBuilder.setPort(ignorantIntParser(parts[1]));
currentMediaBuilder.setProtocol(parts[2]);
ImmutableList.Builder<Integer> formats = new ImmutableList.Builder<>();
for(int i = 3; i < parts.length; ++i) {
formats.add(ignorantIntParser(parts[i]));
}
currentMediaBuilder.setFormats(formats.build());
} else {
Log.d(Config.LOGTAG,"skipping media line "+line);
}
break;
}
}
if (currentMediaBuilder != null) {
currentMediaBuilder.setAttributes(attributeBuilder.build());
mediaBuilder.add(currentMediaBuilder.createMedia());
}
sessionDescriptionBuilder.setMedia(mediaBuilder.build());
return sessionDescriptionBuilder.createSessionDescription();
}
private static int ignorantIntParser(final String input) {
try {
return Integer.parseInt(input);
} catch (NumberFormatException e) {
return 0;
}
}
public static class Attribute {
private final String key;
private final String value;
public Attribute(String key, String value) {
this.key = key;
this.value = value;
}
public static Attribute parse(String input) {
final String[] pair = input.split(":",2);
if (pair.length == 2) {
return new Attribute(pair[0],pair[1]);
} else {
return new Attribute(pair[0], null);
}
}
}
public static class Media {
private final String media;
private final int port;
private final String protocol;
private final List<Integer> formats;
private final String connectionData;
private final List<Attribute> attributes;
public Media(String media, int port, String protocol, List<Integer> formats, String connectionData, List<Attribute> attributes) {
this.media = media;
this.port = port;
this.protocol = protocol;
this.formats = formats;
this.connectionData = connectionData;
this.attributes = attributes;
}
}
}

40
src/main/java/eu/siacs/conversations/xmpp/jingle/SessionDescriptionBuilder.java Normal file
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package eu.siacs.conversations.xmpp.jingle;
import java.util.List;
public class SessionDescriptionBuilder {
private int version;
private String name;
private String connectionData;
private List<SessionDescription.Attribute> attributes;
private List<SessionDescription.Media> media;
public SessionDescriptionBuilder setVersion(int version) {
this.version = version;
return this;
}
public SessionDescriptionBuilder setName(String name) {
this.name = name;
return this;
}
public SessionDescriptionBuilder setConnectionData(String connectionData) {
this.connectionData = connectionData;
return this;
}
public SessionDescriptionBuilder setAttributes(List<SessionDescription.Attribute> attributes) {
this.attributes = attributes;
return this;
}
public SessionDescriptionBuilder setMedia(List<SessionDescription.Media> media) {
this.media = media;
return this;
}
public SessionDescription createSessionDescription() {
return new SessionDescription(version, name, connectionData, attributes, media);
}
}