Files
mostlymatter/api4/config.go
Mario de Frutos Dieguez ab816b18ce [MM-28841] Filter settings sent to the client based on tag (#15578)
* Filter settings sent to the client based on tag

Right now we're filtering in client the sections based on the
RestrictSystemAdmin setting but we're still sending those
settings through the API call.

In this PR we include a new tag cloud_restrictable and some
method to remove those settings/fields from the final JSON
sent to the client
2020-09-30 21:09:56 +02:00

367 строки
12 KiB
Go

// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package api4
import (
"fmt"
"net/http"
"reflect"
"strings"
"github.com/mattermost/mattermost-server/v5/audit"
"github.com/mattermost/mattermost-server/v5/config"
"github.com/mattermost/mattermost-server/v5/mlog"
"github.com/mattermost/mattermost-server/v5/model"
"github.com/mattermost/mattermost-server/v5/utils"
)
var writeFilter func(c *Context, structField reflect.StructField) bool
var readFilter func(c *Context, structField reflect.StructField) bool
var permissionMap map[string]*model.Permission
type filterType string
const filterTypeWrite filterType = "write"
const filterTypeRead filterType = "read"
func (api *API) InitConfig() {
api.BaseRoutes.ApiRoot.Handle("/config", api.ApiSessionRequired(getConfig)).Methods("GET")
api.BaseRoutes.ApiRoot.Handle("/config", api.ApiSessionRequired(updateConfig)).Methods("PUT")
api.BaseRoutes.ApiRoot.Handle("/config/patch", api.ApiSessionRequired(patchConfig)).Methods("PUT")
api.BaseRoutes.ApiRoot.Handle("/config/reload", api.ApiSessionRequired(configReload)).Methods("POST")
api.BaseRoutes.ApiRoot.Handle("/config/client", api.ApiHandler(getClientConfig)).Methods("GET")
api.BaseRoutes.ApiRoot.Handle("/config/environment", api.ApiSessionRequired(getEnvironmentConfig)).Methods("GET")
api.BaseRoutes.ApiRoot.Handle("/config/migrate", api.ApiSessionRequired(migrateConfig)).Methods("POST")
}
func init() {
writeFilter = makeFilterConfigByPermission(filterTypeWrite)
readFilter = makeFilterConfigByPermission(filterTypeRead)
permissionMap = map[string]*model.Permission{}
for _, p := range model.AllPermissions {
permissionMap[p.Id] = p
}
}
func getConfig(c *Context, w http.ResponseWriter, r *http.Request) {
if !c.App.SessionHasPermissionToAny(*c.App.Session(), model.SysconsoleReadPermissions) {
c.SetPermissionError(model.SysconsoleReadPermissions...)
return
}
auditRec := c.MakeAuditRecord("getConfig", audit.Fail)
defer c.LogAuditRec(auditRec)
cfg, err := config.Merge(&model.Config{}, c.App.GetSanitizedConfig(), &utils.MergeConfig{
StructFieldFilter: func(structField reflect.StructField, base, patch reflect.Value) bool {
return readFilter(c, structField)
},
})
if err != nil {
c.Err = model.NewAppError("getConfig", "api.config.get_config.restricted_merge.app_error", nil, err.Error(), http.StatusInternalServerError)
}
auditRec.Success()
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
if c.App.Srv().License() != nil && *c.App.Srv().License().Features.Cloud && *cfg.ExperimentalSettings.RestrictSystemAdmin {
w.Write([]byte(cfg.ToJsonFiltered(model.ConfigAccessTagType, model.ConfigAccessTagCloudRestrictable)))
} else {
w.Write([]byte(cfg.ToJson()))
}
}
func configReload(c *Context, w http.ResponseWriter, r *http.Request) {
auditRec := c.MakeAuditRecord("configReload", audit.Fail)
defer c.LogAuditRec(auditRec)
if !c.App.SessionHasPermissionToAny(*c.App.Session(), model.SysconsoleReadPermissions) {
c.SetPermissionError(model.SysconsoleReadPermissions...)
return
}
if *c.App.Config().ExperimentalSettings.RestrictSystemAdmin {
c.Err = model.NewAppError("configReload", "api.restricted_system_admin", nil, "", http.StatusBadRequest)
return
}
c.App.ReloadConfig()
auditRec.Success()
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
ReturnStatusOK(w)
}
func updateConfig(c *Context, w http.ResponseWriter, r *http.Request) {
cfg := model.ConfigFromJson(r.Body)
if cfg == nil {
c.SetInvalidParam("config")
return
}
auditRec := c.MakeAuditRecord("updateConfig", audit.Fail)
defer c.LogAuditRec(auditRec)
cfg.SetDefaults()
if !c.App.SessionHasPermissionToAny(*c.App.Session(), model.SysconsoleWritePermissions) {
c.SetPermissionError(model.SysconsoleWritePermissions...)
return
}
appCfg := c.App.Config()
if *appCfg.ServiceSettings.SiteURL != "" && *cfg.ServiceSettings.SiteURL == "" {
c.Err = model.NewAppError("updateConfig", "api.config.update_config.clear_siteurl.app_error", nil, "", http.StatusBadRequest)
return
}
var err1 error
cfg, err1 = config.Merge(appCfg, cfg, &utils.MergeConfig{
StructFieldFilter: func(structField reflect.StructField, base, patch reflect.Value) bool {
return writeFilter(c, structField)
},
})
if err1 != nil {
c.Err = model.NewAppError("updateConfig", "api.config.update_config.restricted_merge.app_error", nil, err1.Error(), http.StatusInternalServerError)
}
// Do not allow plugin uploads to be toggled through the API
cfg.PluginSettings.EnableUploads = appCfg.PluginSettings.EnableUploads
// Do not allow certificates to be changed through the API
cfg.PluginSettings.SignaturePublicKeyFiles = appCfg.PluginSettings.SignaturePublicKeyFiles
c.App.HandleMessageExportConfig(cfg, appCfg)
err := cfg.IsValid()
if err != nil {
c.Err = err
return
}
err = c.App.SaveConfig(cfg, true)
if err != nil {
c.Err = err
return
}
cfg, mergeErr := config.Merge(&model.Config{}, c.App.GetSanitizedConfig(), &utils.MergeConfig{
StructFieldFilter: func(structField reflect.StructField, base, patch reflect.Value) bool {
return readFilter(c, structField)
},
})
if mergeErr != nil {
c.Err = model.NewAppError("getConfig", "api.config.update_config.restricted_merge.app_error", nil, err.Error(), http.StatusInternalServerError)
}
auditRec.Success()
c.LogAudit("updateConfig")
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
if c.App.Srv().License() != nil && *c.App.Srv().License().Features.Cloud && *cfg.ExperimentalSettings.RestrictSystemAdmin {
w.Write([]byte(cfg.ToJsonFiltered(model.ConfigAccessTagType, model.ConfigAccessTagCloudRestrictable)))
} else {
w.Write([]byte(cfg.ToJson()))
}
}
func getClientConfig(c *Context, w http.ResponseWriter, r *http.Request) {
format := r.URL.Query().Get("format")
if format == "" {
c.Err = model.NewAppError("getClientConfig", "api.config.client.old_format.app_error", nil, "", http.StatusNotImplemented)
return
}
if format != "old" {
c.SetInvalidParam("format")
return
}
var config map[string]string
if len(c.App.Session().UserId) == 0 {
config = c.App.LimitedClientConfigWithComputed()
} else {
config = c.App.ClientConfigWithComputed()
}
w.Write([]byte(model.MapToJson(config)))
}
func getEnvironmentConfig(c *Context, w http.ResponseWriter, r *http.Request) {
if !c.App.SessionHasPermissionTo(*c.App.Session(), model.PERMISSION_SYSCONSOLE_READ_ENVIRONMENT) {
c.SetPermissionError(model.PERMISSION_SYSCONSOLE_READ_ENVIRONMENT)
return
}
envConfig := c.App.GetEnvironmentConfig()
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
w.Write([]byte(model.StringInterfaceToJson(envConfig)))
}
func patchConfig(c *Context, w http.ResponseWriter, r *http.Request) {
cfg := model.ConfigFromJson(r.Body)
if cfg == nil {
c.SetInvalidParam("config")
return
}
auditRec := c.MakeAuditRecord("patchConfig", audit.Fail)
defer c.LogAuditRec(auditRec)
if !c.App.SessionHasPermissionToAny(*c.App.Session(), model.SysconsoleWritePermissions) {
c.SetPermissionError(model.SysconsoleWritePermissions...)
return
}
appCfg := c.App.Config()
if *appCfg.ServiceSettings.SiteURL != "" && cfg.ServiceSettings.SiteURL != nil && *cfg.ServiceSettings.SiteURL == "" {
c.Err = model.NewAppError("patchConfig", "api.config.update_config.clear_siteurl.app_error", nil, "", http.StatusBadRequest)
return
}
filterFn := func(structField reflect.StructField, base, patch reflect.Value) bool {
return writeFilter(c, structField)
}
// Do not allow plugin uploads to be toggled through the API
cfg.PluginSettings.EnableUploads = appCfg.PluginSettings.EnableUploads
if cfg.MessageExportSettings.EnableExport != nil {
c.App.HandleMessageExportConfig(cfg, appCfg)
}
updatedCfg, mergeErr := config.Merge(appCfg, cfg, &utils.MergeConfig{
StructFieldFilter: filterFn,
})
if mergeErr != nil {
c.Err = model.NewAppError("patchConfig", "api.config.update_config.restricted_merge.app_error", nil, mergeErr.Error(), http.StatusInternalServerError)
return
}
err := updatedCfg.IsValid()
if err != nil {
c.Err = err
return
}
err = c.App.SaveConfig(updatedCfg, true)
if err != nil {
c.Err = err
return
}
auditRec.Success()
cfg, mergeErr = config.Merge(&model.Config{}, c.App.GetSanitizedConfig(), &utils.MergeConfig{
StructFieldFilter: func(structField reflect.StructField, base, patch reflect.Value) bool {
return readFilter(c, structField)
},
})
if mergeErr != nil {
c.Err = model.NewAppError("getConfig", "api.config.patch_config.restricted_merge.app_error", nil, err.Error(), http.StatusInternalServerError)
}
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
if c.App.Srv().License() != nil && *c.App.Srv().License().Features.Cloud && *cfg.ExperimentalSettings.RestrictSystemAdmin {
w.Write([]byte(cfg.ToJsonFiltered(model.ConfigAccessTagType, model.ConfigAccessTagCloudRestrictable)))
} else {
w.Write([]byte(cfg.ToJson()))
}
}
func makeFilterConfigByPermission(accessType filterType) func(c *Context, structField reflect.StructField) bool {
return func(c *Context, structField reflect.StructField) bool {
if structField.Type.Kind() == reflect.Struct {
return true
}
tagPermissions := strings.Split(structField.Tag.Get("access"), ",")
// If there are no access tag values and the role has manage_system, no need to continue
// checking permissions.
if len(tagPermissions) == 0 {
if c.App.SessionHasPermissionTo(*c.App.Session(), model.PERMISSION_MANAGE_SYSTEM) {
return true
}
}
// one iteration for write_restrictable value, it could be anywhere in the order of values
for _, val := range tagPermissions {
tagValue := strings.TrimSpace(val)
if tagValue == "" {
continue
}
// ConfigAccessTagWriteRestrictable trumps all other permissions
if tagValue == model.ConfigAccessTagWriteRestrictable || tagValue == model.ConfigAccessTagCloudRestrictable {
if *c.App.Config().ExperimentalSettings.RestrictSystemAdmin && accessType == filterTypeWrite {
return false
}
continue
}
}
// another iteration for permissions checks of other tag values
for _, val := range tagPermissions {
tagValue := strings.TrimSpace(val)
if tagValue == "" {
continue
}
if tagValue == model.ConfigAccessTagWriteRestrictable {
continue
}
if tagValue == model.ConfigAccessTagCloudRestrictable {
continue
}
permissionID := fmt.Sprintf("sysconsole_%s_%s", accessType, tagValue)
if permission, ok := permissionMap[permissionID]; ok {
if c.App.SessionHasPermissionTo(*c.App.Session(), permission) {
return true
}
} else {
mlog.Warn("Unrecognized config permissions tag value.", mlog.String("tag_value", permissionID))
}
}
// with manage_system, default to allow, otherwise default not-allow
return c.App.SessionHasPermissionTo(*c.App.Session(), model.PERMISSION_MANAGE_SYSTEM)
}
}
func migrateConfig(c *Context, w http.ResponseWriter, r *http.Request) {
props := model.StringInterfaceFromJson(r.Body)
from, ok := props["from"].(string)
if !ok {
c.SetInvalidParam("from")
return
}
to, ok := props["to"].(string)
if !ok {
c.SetInvalidParam("to")
return
}
auditRec := c.MakeAuditRecord("migrateConfig", audit.Fail)
auditRec.AddMeta("from", from)
auditRec.AddMeta("to", to)
defer c.LogAuditRec(auditRec)
if !c.App.SessionHasPermissionTo(*c.App.Session(), model.PERMISSION_MANAGE_SYSTEM) {
c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
return
}
err := config.Migrate(from, to)
if err != nil {
c.Err = model.NewAppError("migrateConfig", "api.config.migrate_config.app_error", nil, err.Error(), http.StatusInternalServerError)
return
}
auditRec.Success()
ReturnStatusOK(w)
}