nuclei/v2/pkg/templates/workflows.go

91 lines
3.0 KiB
Go

package templates
import (
"github.com/pkg/errors"
"github.com/projectdiscovery/gologger"
"github.com/projectdiscovery/nuclei/v2/pkg/model"
"github.com/projectdiscovery/nuclei/v2/pkg/protocols"
"github.com/projectdiscovery/nuclei/v2/pkg/workflows"
)
// compileWorkflow compiles the workflow for execution
func compileWorkflow(path string, preprocessor Preprocessor, options *protocols.ExecuterOptions, workflow *workflows.Workflow, loader model.WorkflowLoader) {
for _, workflow := range workflow.Workflows {
if err := parseWorkflow(preprocessor, workflow, options, loader); err != nil {
gologger.Warning().Msgf("Could not parse workflow %s: %v\n", path, err)
continue
}
}
}
// parseWorkflow parses and compiles all templates in a workflow recursively
func parseWorkflow(preprocessor Preprocessor, workflow *workflows.WorkflowTemplate, options *protocols.ExecuterOptions, loader model.WorkflowLoader) error {
shouldNotValidate := false
if len(workflow.Template) == 0 && workflow.Tags.IsEmpty() {
return errors.New("invalid workflow with no templates or tags")
}
if len(workflow.Subtemplates) > 0 || len(workflow.Matchers) > 0 {
shouldNotValidate = true
}
if err := parseWorkflowTemplate(workflow, preprocessor, options, loader, shouldNotValidate); err != nil {
return err
}
for _, subtemplates := range workflow.Subtemplates {
if err := parseWorkflow(preprocessor, subtemplates, options, loader); err != nil {
gologger.Warning().Msgf("Could not parse workflow: %v\n", err)
continue
}
}
for _, matcher := range workflow.Matchers {
for _, subtemplates := range matcher.Subtemplates {
if err := parseWorkflow(preprocessor, subtemplates, options, loader); err != nil {
gologger.Warning().Msgf("Could not parse workflow: %v\n", err)
continue
}
}
}
return nil
}
// parseWorkflowTemplate parses a workflow template creating an executer
func parseWorkflowTemplate(workflow *workflows.WorkflowTemplate, preprocessor Preprocessor, options *protocols.ExecuterOptions, loader model.WorkflowLoader, noValidate bool) error {
var paths []string
subTemplateTags := workflow.Tags
if !subTemplateTags.IsEmpty() {
paths = loader.GetTemplatePathsByTags(subTemplateTags.ToSlice())
} else {
paths = loader.GetTemplatePaths([]string{workflow.Template}, noValidate)
}
if len(paths) == 0 {
return nil
}
var workflowTemplates []*Template
for _, path := range paths {
template, err := Parse(path, preprocessor, options.Copy())
if err != nil {
gologger.Warning().Msgf("Could not parse workflow template %s: %v\n", path, err)
continue
}
if template.Executer == nil {
gologger.Warning().Msgf("Could not parse workflow template %s: no executer found\n", path)
continue
}
workflowTemplates = append(workflowTemplates, template)
}
finalTemplates, _ := ClusterTemplates(workflowTemplates, options.Copy())
for _, template := range finalTemplates {
workflow.Executers = append(workflow.Executers, &workflows.ProtocolExecuterPair{
Executer: template.Executer,
Options: options,
})
}
return nil
}