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Diffstat (limited to 'components/remote/nsXRemoteService.cpp')
| -rw-r--r-- | components/remote/nsXRemoteService.cpp | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/components/remote/nsXRemoteService.cpp b/components/remote/nsXRemoteService.cpp new file mode 100644 index 000000000..41a40e471 --- /dev/null +++ b/components/remote/nsXRemoteService.cpp @@ -0,0 +1,324 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:expandtab:shiftwidth=2:tabstop=8: + */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "mozilla/ArrayUtils.h" + +#include "nsXRemoteService.h" +#include "nsIObserverService.h" +#include "nsCOMPtr.h" +#include "nsIServiceManager.h" +#include "nsICommandLineRunner.h" +#include "nsICommandLine.h" + +#include "nsIBaseWindow.h" +#include "nsIDocShell.h" +#include "nsIFile.h" +#include "nsIServiceManager.h" +#include "nsIWeakReference.h" +#include "nsIWidget.h" +#include "nsIAppShellService.h" +#include "nsAppShellCID.h" +#include "nsPIDOMWindow.h" +#include "mozilla/X11Util.h" + +#include "nsCOMPtr.h" +#include "nsString.h" +#include "prprf.h" +#include "prenv.h" +#include "nsCRT.h" + +#include "nsXULAppAPI.h" + +#include <X11/Xlib.h> +#include <X11/Xatom.h> + +using namespace mozilla; + +#define MOZILLA_VERSION_PROP "_MOZILLA_VERSION" +#define MOZILLA_LOCK_PROP "_MOZILLA_LOCK" +#define MOZILLA_RESPONSE_PROP "_MOZILLA_RESPONSE" +#define MOZILLA_USER_PROP "_MOZILLA_USER" +#define MOZILLA_PROFILE_PROP "_MOZILLA_PROFILE" +#define MOZILLA_PROGRAM_PROP "_MOZILLA_PROGRAM" +#define MOZILLA_COMMANDLINE_PROP "_MOZILLA_COMMANDLINE" + +const unsigned char kRemoteVersion[] = "5.1"; + +#ifdef IS_BIG_ENDIAN +#define TO_LITTLE_ENDIAN32(x) \ + ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ + (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) +#else +#define TO_LITTLE_ENDIAN32(x) (x) +#endif + +// Minimize the roundtrips to the X server by getting all the atoms at once +static const char *XAtomNames[] = { + MOZILLA_VERSION_PROP, + MOZILLA_LOCK_PROP, + MOZILLA_RESPONSE_PROP, + MOZILLA_USER_PROP, + MOZILLA_PROFILE_PROP, + MOZILLA_PROGRAM_PROP, + MOZILLA_COMMANDLINE_PROP +}; +static Atom XAtoms[MOZ_ARRAY_LENGTH(XAtomNames)]; + +Atom nsXRemoteService::sMozVersionAtom; +Atom nsXRemoteService::sMozLockAtom; +Atom nsXRemoteService::sMozResponseAtom; +Atom nsXRemoteService::sMozUserAtom; +Atom nsXRemoteService::sMozProfileAtom; +Atom nsXRemoteService::sMozProgramAtom; +Atom nsXRemoteService::sMozCommandLineAtom; + +nsXRemoteService * nsXRemoteService::sRemoteImplementation = 0; + + +static bool +FindExtensionParameterInCommand(const char* aParameterName, + const nsACString& aCommand, + char aSeparator, + nsACString* aValue) +{ + nsAutoCString searchFor; + searchFor.Append(aSeparator); + searchFor.Append(aParameterName); + searchFor.Append('='); + + nsACString::const_iterator start, end; + aCommand.BeginReading(start); + aCommand.EndReading(end); + if (!FindInReadable(searchFor, start, end)) + return false; + + nsACString::const_iterator charStart, charEnd; + charStart = end; + aCommand.EndReading(charEnd); + nsACString::const_iterator idStart = charStart, idEnd; + if (FindCharInReadable(aSeparator, charStart, charEnd)) { + idEnd = charStart; + } else { + idEnd = charEnd; + } + *aValue = nsDependentCSubstring(idStart, idEnd); + return true; +} + + +nsXRemoteService::nsXRemoteService() +{ +} + +void +nsXRemoteService::XRemoteBaseStartup(const char *aAppName, const char *aProfileName) +{ + EnsureAtoms(); + + mAppName = aAppName; + ToLowerCase(mAppName); + + mProfileName = aProfileName; + + nsCOMPtr<nsIObserverService> obs(do_GetService("@mozilla.org/observer-service;1")); + if (obs) { + obs->AddObserver(this, "xpcom-shutdown", false); + obs->AddObserver(this, "quit-application", false); + } +} + +void +nsXRemoteService::HandleCommandsFor(Window aWindowId) +{ + // set our version + XChangeProperty(mozilla::DefaultXDisplay(), aWindowId, sMozVersionAtom, XA_STRING, + 8, PropModeReplace, kRemoteVersion, sizeof(kRemoteVersion) - 1); + + // get our username + unsigned char *logname; + logname = (unsigned char*) PR_GetEnv("LOGNAME"); + if (logname) { + // set the property on the window if it's available + XChangeProperty(mozilla::DefaultXDisplay(), aWindowId, sMozUserAtom, XA_STRING, + 8, PropModeReplace, logname, strlen((char*) logname)); + } + + XChangeProperty(mozilla::DefaultXDisplay(), aWindowId, sMozProgramAtom, XA_STRING, + 8, PropModeReplace, (unsigned char*) mAppName.get(), mAppName.Length()); + + if (!mProfileName.IsEmpty()) { + XChangeProperty(mozilla::DefaultXDisplay(), + aWindowId, sMozProfileAtom, XA_STRING, + 8, PropModeReplace, + (unsigned char*) mProfileName.get(), mProfileName.Length()); + } + +} + +NS_IMETHODIMP +nsXRemoteService::Observe(nsISupports* aSubject, + const char *aTopic, + const char16_t *aData) +{ + // This can be xpcom-shutdown or quit-application, but it's the same either + // way. + Shutdown(); + return NS_OK; +} + +bool +nsXRemoteService::HandleNewProperty(XID aWindowId, Display* aDisplay, + Time aEventTime, + Atom aChangedAtom, + nsIWeakReference* aDomWindow) +{ + + nsCOMPtr<nsIDOMWindow> window (do_QueryReferent(aDomWindow)); + + if (aChangedAtom == sMozCommandLineAtom) { + // We got a new command atom. + int result; + Atom actual_type; + int actual_format; + unsigned long nitems, bytes_after; + char *data = 0; + + result = XGetWindowProperty (aDisplay, + aWindowId, + aChangedAtom, + 0, /* long_offset */ + (65536 / sizeof (long)), /* long_length */ + True, /* atomic delete after */ + XA_STRING, /* req_type */ + &actual_type, /* actual_type return */ + &actual_format, /* actual_format_return */ + &nitems, /* nitems_return */ + &bytes_after, /* bytes_after_return */ + (unsigned char **)&data); /* prop_return + (we only care + about the first ) */ + + // Failed to get property off the window? + if (result != Success) + return false; + + // Failed to get the data off the window or it was the wrong type? + if (!data || !TO_LITTLE_ENDIAN32(*reinterpret_cast<int32_t*>(data))) + return false; + + // cool, we got the property data. + const char *response = HandleCommandLine(data, window, aEventTime); + + // put the property onto the window as the response + XChangeProperty (aDisplay, aWindowId, + sMozResponseAtom, XA_STRING, + 8, PropModeReplace, + (const unsigned char *)response, + strlen (response)); + XFree(data); + return true; + } + + else if (aChangedAtom == sMozResponseAtom) { + // client accepted the response. party on wayne. + return true; + } + + else if (aChangedAtom == sMozLockAtom) { + // someone locked the window + return true; + } + + return false; +} + +const char* +nsXRemoteService::HandleCommandLine(char* aBuffer, nsIDOMWindow* aWindow, + uint32_t aTimestamp) +{ + nsresult rv; + + nsCOMPtr<nsICommandLineRunner> cmdline + (do_CreateInstance("@mozilla.org/toolkit/command-line;1", &rv)); + if (NS_FAILED(rv)) + return "509 internal error"; + + // the commandline property is constructed as an array of int32_t + // followed by a series of null-terminated strings: + // + // [argc][offsetargv0][offsetargv1...]<workingdir>\0<argv[0]>\0argv[1]...\0 + // (offset is from the beginning of the buffer) + + int32_t argc = TO_LITTLE_ENDIAN32(*reinterpret_cast<int32_t*>(aBuffer)); + char *wd = aBuffer + ((argc + 1) * sizeof(int32_t)); + + nsCOMPtr<nsIFile> lf; + rv = NS_NewNativeLocalFile(nsDependentCString(wd), true, + getter_AddRefs(lf)); + if (NS_FAILED(rv)) + return "509 internal error"; + + nsAutoCString desktopStartupID; + + char **argv = (char**) malloc(sizeof(char*) * argc); + if (!argv) return "509 internal error"; + + int32_t *offset = reinterpret_cast<int32_t*>(aBuffer) + 1; + + for (int i = 0; i < argc; ++i) { + argv[i] = aBuffer + TO_LITTLE_ENDIAN32(offset[i]); + + if (i == 0) { + nsDependentCString cmd(argv[0]); + FindExtensionParameterInCommand("DESKTOP_STARTUP_ID", + cmd, ' ', + &desktopStartupID); + } + } + + rv = cmdline->Init(argc, argv, lf, nsICommandLine::STATE_REMOTE_AUTO); + + free (argv); + if (NS_FAILED(rv)) { + return "509 internal error"; + } + + if (aWindow) + cmdline->SetWindowContext(aWindow); + + if (sRemoteImplementation) + sRemoteImplementation->SetDesktopStartupIDOrTimestamp(desktopStartupID, aTimestamp); + + rv = cmdline->Run(); + + if (NS_ERROR_ABORT == rv) + return "500 command not parseable"; + + if (NS_FAILED(rv)) + return "509 internal error"; + + return "200 executed command"; +} + +void +nsXRemoteService::EnsureAtoms(void) +{ + if (sMozVersionAtom) + return; + + XInternAtoms(mozilla::DefaultXDisplay(), const_cast<char**>(XAtomNames), + ArrayLength(XAtomNames), False, XAtoms); + + int i = 0; + sMozVersionAtom = XAtoms[i++]; + sMozLockAtom = XAtoms[i++]; + sMozResponseAtom = XAtoms[i++]; + sMozUserAtom = XAtoms[i++]; + sMozProfileAtom = XAtoms[i++]; + sMozProgramAtom = XAtoms[i++]; + sMozCommandLineAtom = XAtoms[i++]; +} |