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comparison: netwerk/dns/DNSRequestParent.cpp
netwerk/dns/DNSRequestParent.cpp
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set sw=2 ts=8 et tw=80 : */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "mozilla/net/DNSRequestParent.h" | |
| 8 #include "nsIDNSService.h" | |
| 9 #include "nsNetCID.h" | |
| 10 #include "nsThreadUtils.h" | |
| 11 #include "nsIServiceManager.h" | |
| 12 #include "nsICancelable.h" | |
| 13 #include "nsIDNSRecord.h" | |
| 14 #include "nsHostResolver.h" | |
| 15 #include "mozilla/unused.h" | |
| 16 | |
| 17 using namespace mozilla::ipc; | |
| 18 | |
| 19 namespace mozilla { | |
| 20 namespace net { | |
| 21 | |
| 22 DNSRequestParent::DNSRequestParent() | |
| 23 : mIPCClosed(false) | |
| 24 { | |
| 25 | |
| 26 } | |
| 27 | |
| 28 DNSRequestParent::~DNSRequestParent() | |
| 29 { | |
| 30 | |
| 31 } | |
| 32 | |
| 33 void | |
| 34 DNSRequestParent::DoAsyncResolve(const nsACString &hostname, uint32_t flags) | |
| 35 { | |
| 36 nsresult rv; | |
| 37 mFlags = flags; | |
| 38 nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv); | |
| 39 if (NS_SUCCEEDED(rv)) { | |
| 40 nsCOMPtr<nsIThread> mainThread = do_GetMainThread(); | |
| 41 nsCOMPtr<nsICancelable> unused; | |
| 42 rv = dns->AsyncResolve(hostname, flags, this, mainThread, | |
| 43 getter_AddRefs(unused)); | |
| 44 } | |
| 45 | |
| 46 if (NS_FAILED(rv) && !mIPCClosed) { | |
| 47 unused << Send__delete__(this, DNSRequestResponse(rv)); | |
| 48 } | |
| 49 } | |
| 50 | |
| 51 void | |
| 52 DNSRequestParent::ActorDestroy(ActorDestroyReason why) | |
| 53 { | |
| 54 // We may still have refcount>0 if DNS hasn't called our OnLookupComplete | |
| 55 // yet, but child process has crashed. We must not send any more msgs | |
| 56 // to child, or IPDL will kill chrome process, too. | |
| 57 mIPCClosed = true; | |
| 58 } | |
| 59 //----------------------------------------------------------------------------- | |
| 60 // DNSRequestParent::nsISupports | |
| 61 //----------------------------------------------------------------------------- | |
| 62 | |
| 63 NS_IMPL_ISUPPORTS(DNSRequestParent, | |
| 64 nsIDNSListener) | |
| 65 | |
| 66 //----------------------------------------------------------------------------- | |
| 67 // nsIDNSListener functions | |
| 68 //----------------------------------------------------------------------------- | |
| 69 | |
| 70 NS_IMETHODIMP | |
| 71 DNSRequestParent::OnLookupComplete(nsICancelable *request, | |
| 72 nsIDNSRecord *rec, | |
| 73 nsresult status) | |
| 74 { | |
| 75 if (mIPCClosed) { | |
| 76 // nothing to do: child probably crashed | |
| 77 return NS_OK; | |
| 78 } | |
| 79 | |
| 80 if (NS_SUCCEEDED(status)) { | |
| 81 MOZ_ASSERT(rec); | |
| 82 | |
| 83 nsAutoCString cname; | |
| 84 if (mFlags & nsHostResolver::RES_CANON_NAME) { | |
| 85 rec->GetCanonicalName(cname); | |
| 86 } | |
| 87 | |
| 88 // Get IP addresses for hostname (use port 80 as dummy value for NetAddr) | |
| 89 NetAddrArray array; | |
| 90 NetAddr addr; | |
| 91 while (NS_SUCCEEDED(rec->GetNextAddr(80, &addr))) { | |
| 92 array.AppendElement(addr); | |
| 93 } | |
| 94 | |
| 95 unused << Send__delete__(this, DNSRequestResponse(DNSRecord(cname, array))); | |
| 96 } else { | |
| 97 unused << Send__delete__(this, DNSRequestResponse(status)); | |
| 98 } | |
| 99 | |
| 100 return NS_OK; | |
| 101 } | |
| 102 | |
| 103 | |
| 104 | |
| 105 }} // mozilla::net |
