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api_icons.go
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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2015-2020 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package daemon
import (
"errors"
"net/http"
"github.com/snapcore/snapd/overlord/auth"
"github.com/snapcore/snapd/overlord/snapstate"
"github.com/snapcore/snapd/overlord/state"
"github.com/snapcore/snapd/snap"
)
var (
appIconCmd = &Command{
Path: "/v2/icons/{name}/icon",
GET: appIconGet,
ReadAccess: openAccess{},
}
)
func appIconGet(c *Command, r *http.Request, user *auth.UserState) Response {
vars := muxVars(r)
name := vars["name"]
return iconGet(c.d.overlord.State(), name)
}
func iconGet(st *state.State, name string) Response {
st.Lock()
defer st.Unlock()
var snapst snapstate.SnapState
err := snapstate.Get(st, name, &snapst)
if err != nil {
if errors.Is(err, state.ErrNoState) {
return SnapNotFound(name, err)
}
return InternalError("cannot consult state: %v", err)
}
sideInfo := snapst.CurrentSideInfo()
if sideInfo == nil {
return NotFound("snap has no current revision")
}
icon := snapIcon(snap.MinimalPlaceInfo(name, sideInfo.Revision))
if icon == "" {
return NotFound("local snap has no icon")
}
return fileResponse(icon)
}