From 2b90fcc39a1079346d6c5e2bfff8987104da737a Mon Sep 17 00:00:00 2001
From: fiaxh <git@lightrise.org>
Date: Fri, 19 Mar 2021 22:46:39 +0100
Subject: Improve & refactor Jingle base implementation

Co-authored-by: Marvin W <git@larma.de>
---
 .../src/module/xep/0166_jingle/content_node.vala   | 112 +++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 xmpp-vala/src/module/xep/0166_jingle/content_node.vala

(limited to 'xmpp-vala/src/module/xep/0166_jingle/content_node.vala')

diff --git a/xmpp-vala/src/module/xep/0166_jingle/content_node.vala b/xmpp-vala/src/module/xep/0166_jingle/content_node.vala
new file mode 100644
index 00000000..7d8d56c8
--- /dev/null
+++ b/xmpp-vala/src/module/xep/0166_jingle/content_node.vala
@@ -0,0 +1,112 @@
+using Gee;
+using Xmpp.Xep;
+using Xmpp;
+
+namespace Xmpp.Xep.Jingle {
+
+    class ContentNode {
+        public Role creator;
+        public string name;
+        public Senders senders;
+        public StanzaNode? description;
+        public StanzaNode? transport;
+        public StanzaNode? security;
+    }
+
+    [Version(deprecated = true)]
+    ContentNode get_single_content_node(StanzaNode jingle) throws IqError {
+        Gee.List<StanzaNode> contents = jingle.get_subnodes("content");
+        if (contents.size == 0) {
+            throw new IqError.BAD_REQUEST("missing content node");
+        }
+        if (contents.size > 1) {
+            throw new IqError.NOT_IMPLEMENTED("can't process multiple content nodes");
+        }
+        StanzaNode content = contents[0];
+        string? creator_str = content.get_attribute("creator");
+        // Vala can't typecheck the ternary operator here.
+        Role? creator = null;
+        if (creator_str != null) {
+            creator = Role.parse(creator_str);
+        } else {
+            // TODO(hrxi): now, is the creator attribute optional or not (XEP-0166
+            // Jingle)?
+            creator = Role.INITIATOR;
+        }
+
+        string? name = content.get_attribute("name");
+
+        Senders senders = Senders.parse(content.get_attribute("senders"));
+
+        StanzaNode? description = get_single_node_anyns(content, "description");
+        StanzaNode? transport = get_single_node_anyns(content, "transport");
+        StanzaNode? security = get_single_node_anyns(content, "security");
+        if (name == null || creator == null) {
+            throw new IqError.BAD_REQUEST("missing name or creator");
+        }
+
+        return new ContentNode() {
+            creator=creator,
+            name=name,
+            senders=senders,
+            description=description,
+            transport=transport,
+            security=security
+        };
+    }
+
+    Gee.List<ContentNode> get_content_nodes(StanzaNode jingle) throws IqError {
+        Gee.List<StanzaNode> contents = jingle.get_subnodes("content");
+        if (contents.size == 0) {
+            throw new IqError.BAD_REQUEST("missing content node");
+        }
+        Gee.List<ContentNode> list = new ArrayList<ContentNode>();
+        foreach (StanzaNode content in contents) {
+            string? creator_str = content.get_attribute("creator");
+            // Vala can't typecheck the ternary operator here.
+            Role? creator = null;
+            if (creator_str != null) {
+                creator = Role.parse(creator_str);
+            } else {
+                // TODO(hrxi): now, is the creator attribute optional or not (XEP-0166
+                // Jingle)?
+                creator = Role.INITIATOR;
+            }
+
+            string? name = content.get_attribute("name");
+            Senders senders = Senders.parse(content.get_attribute("senders"));
+            StanzaNode? description = get_single_node_anyns(content, "description");
+            StanzaNode? transport = get_single_node_anyns(content, "transport");
+            StanzaNode? security = get_single_node_anyns(content, "security");
+            if (name == null || creator == null) {
+                throw new IqError.BAD_REQUEST("missing name or creator");
+            }
+            list.add(new ContentNode() {
+                creator=creator,
+                name=name,
+                senders=senders,
+                description=description,
+                transport=transport,
+                security=security
+            });
+        }
+        return list;
+    }
+
+    StanzaNode? get_single_node_anyns(StanzaNode parent, string? node_name = null) throws IqError {
+        StanzaNode? result = null;
+        foreach (StanzaNode child in parent.get_all_subnodes()) {
+            if (node_name == null || child.name == node_name) {
+                if (result != null) {
+                    if (node_name != null) {
+                        throw new IqError.BAD_REQUEST(@"multiple $(node_name) nodes");
+                    } else {
+                        throw new IqError.BAD_REQUEST(@"expected single subnode");
+                    }
+                }
+                result = child;
+            }
+        }
+        return result;
+    }
+}
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