126 lines
3.5 KiB
Go
126 lines
3.5 KiB
Go
package xmpp
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import (
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"fmt"
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"strconv"
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"time"
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)
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const IQTypeGet = "get"
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const IQTypeSet = "set"
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const IQTypeResult = "result"
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const IQTypeError = "error"
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func (c *Client) Discovery() (string, error) {
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// use getCookie for a pseudo random id.
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reqID := strconv.FormatUint(uint64(getCookie()), 10)
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return c.RawInformationQuery(c.jid, c.domain, reqID, IQTypeGet, XMPPNS_DISCO_ITEMS, "")
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}
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// DiscoverNodeInfo discovers information about a node. Empty node queries info about server itself.
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func (c *Client) DiscoverNodeInfo(node string) (string, error) {
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query := fmt.Sprintf("<query xmlns='%s' node='%s'/>", XMPPNS_DISCO_INFO, node)
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return c.RawInformation(c.jid, c.domain, "info3", IQTypeGet, query)
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}
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// DiscoverInfo discovers information about given item from given jid.
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func (c *Client) DiscoverInfo(from string, to string) (string, error) {
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query := fmt.Sprintf("<query xmlns='%s'/>", XMPPNS_DISCO_INFO)
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return c.RawInformation(from, to, "info3", IQTypeGet, query)
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}
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// DiscoverServerItems discover items that the server exposes.
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func (c *Client) DiscoverServerItems() (string, error) {
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return c.DiscoverEntityItems(c.domain)
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}
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// DiscoverEntityItems discovers items that an entity exposes.
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func (c *Client) DiscoverEntityItems(jid string) (string, error) {
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query := fmt.Sprintf("<query xmlns='%s'/>", XMPPNS_DISCO_ITEMS)
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return c.RawInformation(c.jid, jid, "info1", IQTypeGet, query)
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}
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// RawInformationQuery sends an information query request to the server.
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func (c *Client) RawInformationQuery(from, to, id, iqType, requestNamespace, body string) (string, error) {
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const xmlIQ = "<iq from='%s' to='%s' id='%s' type='%s'><query xmlns='%s'>%s</query></iq>"
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_, err := fmt.Fprintf(StanzaWriter, xmlIQ, xmlEscape(from), xmlEscape(to), id, iqType, requestNamespace, body)
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return id, err
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}
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// RawInformation sends a IQ request with the payload body to the server.
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func (c *Client) RawInformation(from, to, id, iqType, body string) (string, error) {
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const xmlIQ = "<iq from='%s' to='%s' id='%s' type='%s'>%s</iq>"
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_, err := fmt.Fprintf(StanzaWriter, xmlIQ, xmlEscape(from), xmlEscape(to), id, iqType, body)
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return id, err
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}
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// IqVersionResponse responding with software version, according to xep-0092.
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func (c *Client) IqVersionResponse(v IQ, name, version, os string) (string, error) {
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if name == "" {
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name = "go-xmpp"
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}
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if version == "" {
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version = "undefined"
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}
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query := "<query xmlns=\"jabber:iq:version\">"
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query += fmt.Sprintf("<name>%s</name>", name)
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query += fmt.Sprintf("<version>%s</version>", version)
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if os != "" {
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query += fmt.Sprintf("<os>%s</os>", os)
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}
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query += "</query>"
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return c.RawInformation(
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v.To,
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v.From,
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v.ID,
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IQTypeResult,
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query,
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)
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}
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// JabberIqLastResponse responding with relative time since last activity.
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// Here lastActivity is unix time stamp when last activity took place since.
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func (c *Client) JabberIqLastResponse(v IQ, lastActivity int64) (string, error) {
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query := fmt.Sprintf(
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"<query xmlns=\"jabber:iq:last\" seconds=\"%d\" />",
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time.Now().Unix()-lastActivity,
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)
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return c.RawInformation(
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v.To,
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v.From,
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v.ID,
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IQTypeResult,
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query,
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)
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}
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// UrnXMPPTimeResponse implements response to query entity's current time (xep-0202).
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// TimezoneOffset have format +HH:MM or -HH:MM.
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func (c *Client) UrnXMPPTimeResponse(v IQ, timezoneOffset string) (string, error) {
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query := fmt.Sprintf(
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"<time xmlns=\"urn:xmpp:time\"><tzo>%s</tzo><utc>%s</utc></time>",
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timezoneOffset,
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time.Now().UTC().Format(time.RFC3339),
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)
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return c.RawInformation(
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v.To,
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v.From,
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v.ID,
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IQTypeResult,
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query,
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)
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}
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