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115 lines
3.4 KiB
115 lines
3.4 KiB
from datetime import timedelta as td
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from django.db.models import F
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from django.http import HttpResponse, HttpResponseBadRequest, JsonResponse
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from django.utils import timezone
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from django.views.decorators.cache import never_cache
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from django.views.decorators.csrf import csrf_exempt
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from hc.api import schemas
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from hc.api.decorators import check_api_key, uuid_or_400, validate_json
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from hc.api.models import Check, Ping
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from hc.lib.badges import check_signature, get_badge_svg
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@csrf_exempt
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@uuid_or_400
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@never_cache
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def ping(request, code):
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try:
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check = Check.objects.get(code=code)
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except Check.DoesNotExist:
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return HttpResponseBadRequest()
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check.n_pings = F("n_pings") + 1
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check.last_ping = timezone.now()
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if check.status in ("new", "paused"):
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check.status = "up"
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check.save()
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check.refresh_from_db()
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ping = Ping(owner=check)
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headers = request.META
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ping.n = check.n_pings
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remote_addr = headers.get("HTTP_X_FORWARDED_FOR", headers["REMOTE_ADDR"])
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ping.remote_addr = remote_addr.split(",")[0]
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ping.scheme = headers.get("HTTP_X_FORWARDED_PROTO", "http")
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ping.method = headers["REQUEST_METHOD"]
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# If User-Agent is longer than 200 characters, truncate it:
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ping.ua = headers.get("HTTP_USER_AGENT", "")[:200]
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ping.save()
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response = HttpResponse("OK")
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response["Access-Control-Allow-Origin"] = "*"
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return response
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@csrf_exempt
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@check_api_key
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@validate_json(schemas.check)
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def checks(request):
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if request.method == "GET":
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q = Check.objects.filter(user=request.user)
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doc = {"checks": [check.to_dict() for check in q]}
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return JsonResponse(doc)
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elif request.method == "POST":
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check = Check(user=request.user)
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check.name = str(request.json.get("name", ""))
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check.tags = str(request.json.get("tags", ""))
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if "timeout" in request.json:
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check.timeout = td(seconds=request.json["timeout"])
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if "grace" in request.json:
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check.grace = td(seconds=request.json["grace"])
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check.save()
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# This needs to be done after saving the check, because of
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# the M2M relation between checks and channels:
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if request.json.get("channels") == "*":
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check.assign_all_channels()
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return JsonResponse(check.to_dict(), status=201)
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# If request is neither GET nor POST, return "405 Method not allowed"
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return HttpResponse(status=405)
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@csrf_exempt
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@check_api_key
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def pause(request, code):
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if request.method != "POST":
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# Method not allowed
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return HttpResponse(status=405)
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try:
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check = Check.objects.get(code=code, user=request.user)
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except Check.DoesNotExist:
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return HttpResponseBadRequest()
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check.status = "paused"
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check.save()
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return JsonResponse(check.to_dict())
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@never_cache
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def badge(request, username, signature, tag):
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if not check_signature(username, tag, signature):
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return HttpResponseBadRequest()
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status = "up"
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q = Check.objects.filter(user__username=username, tags__contains=tag)
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for check in q:
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if tag not in check.tags_list():
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continue
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if status == "up" and check.in_grace_period():
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status = "late"
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if check.get_status() == "down":
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status = "down"
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break
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svg = get_badge_svg(tag, status)
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return HttpResponse(svg, content_type="image/svg+xml")
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