MM-22273 New auditing system (phase 1) (#13967)

* New auditing API outputting to syslog via TLS

* New config section for specifying remote syslog server IP, port, and cert.

* Legacy audit API retained for access history feature

api4/ldap.go

@@ -8,6 +8,7 @@ import (
 	"encoding/json"
 	"net/http"
 
+	"github.com/mattermost/mattermost-server/v5/audit"
 	"github.com/mattermost/mattermost-server/v5/model"
 )
 
@@ -38,6 +39,9 @@ func syncLdap(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	auditRec := c.MakeAuditRecord("syncLdap", audit.Fail)
+	defer c.LogAuditRec(auditRec)
+
 	if !c.App.SessionHasPermissionTo(*c.App.Session(), model.PERMISSION_MANAGE_SYSTEM) {
 		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
 		return
@@ -45,6 +49,7 @@ func syncLdap(c *Context, w http.ResponseWriter, r *http.Request) {
 
 	c.App.SyncLdap()
 
+	auditRec.Success()
 	ReturnStatusOK(w)
 }
 
@@ -130,6 +135,10 @@ func linkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	auditRec := c.MakeAuditRecord("linkLdapGroup", audit.Fail)
+	defer c.LogAuditRec(auditRec)
+	auditRec.AddMeta("remote_id", c.Params.RemoteId)
+
 	if c.App.License() == nil || !*c.App.License().Features.LDAPGroups {
 		c.Err = model.NewAppError("Api4.linkLdapGroup", "api.ldap_groups.license_error", nil, "", http.StatusNotImplemented)
 		return
@@ -140,6 +149,8 @@ func linkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 		c.Err = err
 		return
 	}
+	auditRec.AddMeta("ldap_group_id", ldapGroup.Id)
+	auditRec.AddMeta("ldap_group_desc", ldapGroup.Description)
 
 	if ldapGroup == nil {
 		c.Err = model.NewAppError("Api4.linkLdapGroup", "api.ldap_group.not_found", nil, "", http.StatusNotFound)
@@ -151,6 +162,10 @@ func linkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 		c.Err = err
 		return
 	}
+	if group != nil {
+		auditRec.AddMeta("group_id", group.Id)
+		auditRec.AddMeta("group_name", group.Name)
+	}
 
 	var status int
 	var newOrUpdatedGroup *model.Group
@@ -162,6 +177,7 @@ func linkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 	} else {
 		displayName = ldapGroup.DisplayName
 	}
+	auditRec.AddMeta("ldap_group_display", displayName)
 
 	// Group has been previously linked
 	if group != nil {
@@ -204,6 +220,8 @@ func linkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	auditRec.Success()
+
 	w.WriteHeader(status)
 	w.Write(b)
 }
@@ -214,6 +232,10 @@ func unlinkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	auditRec := c.MakeAuditRecord("unlinkLdapGroup", audit.Fail)
+	defer c.LogAuditRec(auditRec)
+	auditRec.AddMeta("remote_id", c.Params.RemoteId)
+
 	if !c.App.SessionHasPermissionTo(*c.App.Session(), model.PERMISSION_MANAGE_SYSTEM) {
 		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
 		return
@@ -229,6 +251,8 @@ func unlinkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 		c.Err = err
 		return
 	}
+	auditRec.AddMeta("group_id", group.Id)
+	auditRec.AddMeta("group_name", group.Name)
 
 	if group.DeleteAt == 0 {
 		_, err = c.App.DeleteGroup(group.Id)
@@ -238,5 +262,6 @@ func unlinkLdapGroup(c *Context, w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
+	auditRec.Success()
 	ReturnStatusOK(w)
 }