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parse_payload.go
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parse_payload.go
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package bitbucketcloud
import (
"context"
"encoding/json"
"fmt"
"net"
"net/http"
"strings"
"github.com/openshift-pipelines/pipelines-as-code/pkg/params"
"github.com/openshift-pipelines/pipelines-as-code/pkg/params/info"
"github.com/openshift-pipelines/pipelines-as-code/pkg/provider"
"github.com/openshift-pipelines/pipelines-as-code/pkg/provider/bitbucketcloud/types"
)
const bitbucketCloudIPrangesList = "https://ip-ranges.atlassian.com/"
// lastForwarderForIP get last ip from the X-Forwarded-For chain
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For
func lastForwarderForIP(xff string) string {
splitted := strings.Split(xff, ",")
return splitted[len(splitted)-1]
}
// checkFromPublicCloudIPS Grab public IP from public cloud and make sure we match it
func (v *Provider) checkFromPublicCloudIPS(ctx context.Context, run *params.Run, sourceIP string) (bool, error) {
if !run.Info.Pac.BitbucketCloudCheckSourceIP {
return true, nil
}
if sourceIP == "" {
return false, fmt.Errorf("we need to check the source_ip but no source_ip has been passed")
}
sourceIP = lastForwarderForIP(sourceIP)
netsourceIP := net.ParseIP(sourceIP)
data, err := run.Clients.GetURL(ctx, bitbucketCloudIPrangesList)
if err != nil {
return false, err
}
ipranges := &types.IPRanges{}
err = json.Unmarshal(data, &ipranges)
if err != nil {
return false, err
}
extraIPEnv := run.Info.Pac.BitbucketCloudAdditionalSourceIP
if extraIPEnv != "" {
for _, value := range strings.Split(extraIPEnv, ",") {
if !strings.Contains(value, "/") {
value = fmt.Sprintf("%s/32", value)
}
ipranges.Items = append(ipranges.Items, types.IPRangesItem{
CIDR: strings.TrimSpace(value),
})
}
}
for _, value := range ipranges.Items {
_, cidr, err := net.ParseCIDR(value.CIDR)
if err != nil {
return false, err
}
if cidr.Contains(netsourceIP) {
return true, nil
}
}
return false,
fmt.Errorf("payload from %s is not coming from the public bitbucket cloud ips as defined here: %s",
sourceIP, bitbucketCloudIPrangesList)
}
func parsePayloadType(event, rawPayload string) (interface{}, error) {
var payload interface{}
var localEvent string
if strings.HasPrefix(event, "pullrequest:") {
if !provider.Valid(event, []string{
"pullrequest:created", "pullrequest:updated", "pullrequest:comment_created",
}) {
return nil, fmt.Errorf("event %s is not supported", event)
}
localEvent = "pull_request"
} else if event == "repo:push" {
localEvent = "push"
}
switch localEvent {
case "pull_request":
payload = &types.PullRequestEvent{}
case "push":
payload = &types.PushRequestEvent{}
default:
return nil, nil
}
err := json.Unmarshal([]byte(rawPayload), payload)
return payload, err
}
func (v *Provider) ParsePayload(ctx context.Context, run *params.Run, request *http.Request, payload string) (*info.Event, error) {
processedEvent := info.NewEvent()
event := request.Header.Get("X-Event-Key")
eventInt, err := parsePayloadType(event, payload)
if err != nil || eventInt == nil {
return info.NewEvent(), err
}
err = json.Unmarshal([]byte(payload), &eventInt)
if err != nil {
return info.NewEvent(), err
}
sourceIP := request.Header.Get("X-Forwarded-For")
allowed, err := v.checkFromPublicCloudIPS(ctx, run, sourceIP)
if err != nil {
return nil, err
}
if !allowed {
return nil, fmt.Errorf("payload is not coming from the public bitbucket cloud ips as defined here: %s",
bitbucketCloudIPrangesList)
}
processedEvent.Event = eventInt
switch e := eventInt.(type) {
case *types.PullRequestEvent:
if provider.Valid(event, []string{"pullrequest:created", "pullrequest:updated"}) {
processedEvent.TriggerTarget = "pull_request"
processedEvent.EventType = "pull_request"
} else if provider.Valid(event, []string{"pullrequest:comment_created"}) {
switch {
case provider.IsTestRetestComment(e.Comment.Content.Raw):
processedEvent.TriggerTarget = "pull_request"
if strings.Contains(e.Comment.Content.Raw, "/test") {
processedEvent.EventType = "test-comment"
} else {
processedEvent.EventType = "retest-comment"
}
processedEvent.TargetTestPipelineRun = provider.GetPipelineRunFromTestComment(e.Comment.Content.Raw)
case provider.IsOkToTestComment(e.Comment.Content.Raw):
processedEvent.TriggerTarget = "pull_request"
processedEvent.EventType = "ok-to-test-comment"
case provider.IsCancelComment(e.Comment.Content.Raw):
processedEvent.TriggerTarget = "pull_request"
processedEvent.EventType = "cancel-comment"
processedEvent.CancelPipelineRuns = true
processedEvent.TargetCancelPipelineRun = provider.GetPipelineRunFromCancelComment(e.Comment.Content.Raw)
}
}
processedEvent.Organization = e.Repository.Workspace.Slug
processedEvent.Repository = e.Repository.Name
processedEvent.SHA = e.PullRequest.Source.Commit.Hash
processedEvent.URL = e.Repository.Links.HTML.HRef
processedEvent.BaseBranch = e.PullRequest.Destination.Branch.Name
processedEvent.HeadBranch = e.PullRequest.Source.Branch.Name
processedEvent.AccountID = e.PullRequest.Author.AccountID
processedEvent.Sender = e.PullRequest.Author.Nickname
processedEvent.PullRequestNumber = e.PullRequest.ID
processedEvent.PullRequestTitle = e.PullRequest.Title
case *types.PushRequestEvent:
processedEvent.Event = "push"
processedEvent.TriggerTarget = "push"
processedEvent.Organization = e.Repository.Workspace.Slug
processedEvent.Repository = e.Repository.Name
processedEvent.SHA = e.Push.Changes[0].New.Target.Hash
processedEvent.URL = e.Repository.Links.HTML.HRef
processedEvent.BaseBranch = e.Push.Changes[0].New.Name
processedEvent.HeadBranch = e.Push.Changes[0].Old.Name
processedEvent.AccountID = e.Actor.AccountID
processedEvent.Sender = e.Actor.Nickname
default:
return nil, fmt.Errorf("event %s is not recognized", event)
}
return processedEvent, nil
}