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pipeline.go
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pipeline.go
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package onionscan
import (
"errors"
"fmt"
"github.com/s-rah/onionscan/report"
"github.com/s-rah/onionscan/utils"
"strings"
)
// Pipeline is a construct for managing a set of crawls, analysis and output sinks
type Pipeline struct {
Steps []PipelineStep
Reports chan *report.OnionScanReport
}
// PipelineStep is an interface that functions can use to declare themselves
// as a pipeline step
type PipelineStep interface {
Do(*report.OnionScanReport) error
}
// Init sets up a pipeline, reporting all results on the given channel
func (p *Pipeline) Init(reportChannel chan *report.OnionScanReport) {
p.Reports = reportChannel
}
// AddStep adds a new step to the pipeline.
func (p *Pipeline) AddStep(step PipelineStep) {
p.Steps = append(p.Steps, step)
}
// Execute takes a hidden service address and puts it through the configured
// pipeline.
func (p *Pipeline) Execute(hiddenService string) {
// Remove Extra Prefix
hiddenService = utils.WithoutProtocol(hiddenService)
if strings.HasSuffix(hiddenService, "/") {
hiddenService = hiddenService[0 : len(hiddenService)-1]
}
r := report.NewOnionScanReport(hiddenService)
if utils.IsOnion(hiddenService) {
for _, step := range p.Steps {
err := step.Do(r)
if err != nil {
break
}
}
// Output Report
p.Reports <- r
} else {
r.Error = errors.New(fmt.Sprintf("Unknown hidden service type: %v", hiddenService))
p.Reports <- r
}
}