portainer/api/http/handler/stacks/stack_file.go

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package stacks
import (
"net/http"
"path"
"github.com/portainer/portainer"
httperror "github.com/portainer/portainer/http/error"
"github.com/portainer/portainer/http/proxy"
"github.com/portainer/portainer/http/request"
"github.com/portainer/portainer/http/response"
"github.com/portainer/portainer/http/security"
)
type stackFileResponse struct {
StackFileContent string `json:"StackFileContent"`
}
// GET request on /api/stacks/:id/file
func (handler *Handler) stackFile(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
stackID, err := request.RetrieveRouteVariableValue(r, "id")
if err != nil {
return &httperror.HandlerError{http.StatusBadRequest, "Invalid stack identifier route variable", err}
}
stack, err := handler.StackService.Stack(portainer.StackID(stackID))
if err == portainer.ErrStackNotFound {
return &httperror.HandlerError{http.StatusNotFound, "Unable to find a stack with the specified identifier inside the database", err}
} else if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find a stack with the specified identifier inside the database", err}
}
resourceControl, err := handler.ResourceControlService.ResourceControlByResourceID(stack.Name)
if err != nil && err != portainer.ErrResourceControlNotFound {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve a resource control associated to the stack", err}
}
securityContext, err := security.RetrieveRestrictedRequestContext(r)
if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve info from request context", err}
}
extendedStack := proxy.ExtendedStack{*stack, portainer.ResourceControl{}}
if resourceControl != nil {
if securityContext.IsAdmin || proxy.CanAccessStack(stack, resourceControl, securityContext.UserID, securityContext.UserMemberships) {
extendedStack.ResourceControl = *resourceControl
} else {
return &httperror.HandlerError{http.StatusForbidden, "Access denied to resource", portainer.ErrResourceAccessDenied}
}
}
stackFileContent, err := handler.FileService.GetFileContent(path.Join(stack.ProjectPath, stack.EntryPoint))
if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve Compose file from disk", err}
}
return response.JSON(w, &stackFileResponse{StackFileContent: stackFileContent})
}