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using Gee;
using Xmpp;
namespace Xmpp.Xep.StatelessFileSharing {
public const string NS_URI = "urn:xmpp:sfs:0";
public static Gee.List<FileShare> get_file_shares(MessageStanza message) {
var ret = new ArrayList<FileShare>();
foreach (StanzaNode file_sharing_node in message.stanza.get_subnodes("file-sharing", NS_URI)) {
var metadata = Xep.FileMetadataElement.get_file_metadata(file_sharing_node);
if (metadata == null) continue;
var sources_node = message.stanza.get_subnode("sources", NS_URI);
ret.add(new FileShare() {
id = file_sharing_node.get_attribute("id", NS_URI),
metadata = Xep.FileMetadataElement.get_file_metadata(file_sharing_node),
sources = sources_node != null ? get_sources(sources_node) : null
});
}
if (ret.size == 0) return null;
return ret;
}
public static Gee.List<SourceAttachment>? get_source_attachments(MessageStanza message) {
Gee.List<StanzaNode> sources_nodes = message.stanza.get_subnodes("sources", NS_URI);
if (sources_nodes.is_empty) return null;
string? attach_to_id = MessageAttaching.get_attach_to(message.stanza);
if (attach_to_id == null) return null;
var ret = new ArrayList<SourceAttachment>();
foreach (StanzaNode sources_node in sources_nodes) {
ret.add(new SourceAttachment() {
to_message_id = attach_to_id,
to_file_transfer_id = sources_node.get_attribute("id", NS_URI),
sources = get_sources(sources_node)
});
}
return ret;
}
// Currently only returns a single http source
private static Gee.List<Source>? get_sources(StanzaNode sources_node) {
string? url = HttpSchemeForUrlData.get_url(sources_node);
if (url == null) return null;
var http_source = new HttpSource() { url=url };
var sources = new Gee.ArrayList<Source>();
sources.add(http_source);
return sources;
}
public static void set_sfs_element(MessageStanza message, string file_sharing_id, FileMetadataElement.FileMetadata metadata, Gee.List<Xep.StatelessFileSharing.Source>? sources) {
var file_sharing_node = new StanzaNode.build("file-sharing", NS_URI).add_self_xmlns()
.put_attribute("id", file_sharing_id, NS_URI)
.put_node(metadata.to_stanza_node());
if (sources != null && !sources.is_empty) {
file_sharing_node.put_node(create_sources_node(file_sharing_id, sources));
}
message.stanza.put_node(file_sharing_node);
}
public static void set_sfs_attachment(MessageStanza message, string attach_to_id, string attach_to_file_id, Gee.List<Xep.StatelessFileSharing.Source> sources) {
message.stanza.put_node(MessageAttaching.to_stanza_node(attach_to_id));
message.stanza.put_node(create_sources_node(attach_to_file_id, sources).add_self_xmlns());
}
private static StanzaNode create_sources_node(string file_sharing_id, Gee.List<Xep.StatelessFileSharing.Source> sources) {
StanzaNode sources_node = new StanzaNode.build("sources", NS_URI)
.put_attribute("id", file_sharing_id, NS_URI);
foreach (var source in sources) {
sources_node.put_node(source.to_stanza_node());
}
return sources_node;
}
public class FileShare : Object {
public string? id { get; set; }
public Xep.FileMetadataElement.FileMetadata metadata { get; set; }
public Gee.List<Source>? sources { get; set; }
}
public class SourceAttachment : Object {
public string to_message_id { get; set; }
public string? to_file_transfer_id { get; set; }
public Gee.List<Source>? sources { get; set; }
}
public interface Source: Object {
public abstract string type();
public abstract StanzaNode to_stanza_node();
public abstract bool equals(Source source);
public static bool equals_func(Source s1, Source s2) {
return s1.equals(s2);
}
}
public class HttpSource : Object, Source {
public string url { get; set; }
public string type() {
return "http";
}
public StanzaNode to_stanza_node() {
return HttpSchemeForUrlData.to_stanza_node(url);
}
public bool equals(Source source) {
HttpSource? http_source = source as HttpSource;
if (http_source == null) return false;
return http_source.url == this.url;
}
}
}
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