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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsCommandLineServiceMac.h"
#include "nsString.h"
#include "nsTArray.h"
#include "MacApplicationDelegate.h"
#include "MacAutoreleasePool.h"
#include <cstring>
#include <Cocoa/Cocoa.h>
namespace CommandLineServiceMac {
static const int kArgsGrowSize = 20;
static char** sArgs = nullptr;
static int sArgsAllocated = 0;
static int sArgsUsed = 0;
void AddToCommandLine(const char* inArgText) {
if (sArgsUsed >= sArgsAllocated - 1) {
// realloc does not free the given pointer if allocation fails
char** temp = static_cast<char**>(
realloc(sArgs, (sArgsAllocated + kArgsGrowSize) * sizeof(char*)));
if (!temp) return;
sArgs = temp;
sArgsAllocated += kArgsGrowSize;
}
char* temp2 = strdup(inArgText);
if (!temp2) return;
sArgs[sArgsUsed++] = temp2;
sArgs[sArgsUsed] = nullptr;
return;
}
// Caller has ownership of argv and is responsible for freeing the allocated
// memory.
void SetupMacCommandLine(int& argc, char**& argv, bool forRestart) {
mozilla::MacAutoreleasePool pool;
sArgs = static_cast<char**>(malloc(kArgsGrowSize * sizeof(char*)));
if (!sArgs) {
return;
}
sArgsAllocated = kArgsGrowSize;
sArgs[0] = nullptr;
sArgsUsed = 0;
NSString* path = [NSString stringWithUTF8String:argv[0]];
if (forRestart &&
[path hasSuffix:[NSString stringWithUTF8String:MOZ_APP_NAME]]) {
// When we restart, we ask the updater binary to restart us instead.
// This avoids duplicate Dock icons, by giving this process a chance to
// shut down before the new process is launched.
// Essentially, we are using the updater as a relauncher process.
NSString* updaterPath = [[path stringByDeletingLastPathComponent]
stringByAppendingPathComponent:
@"updater.app/Contents/MacOS/org.mozilla.updater"];
AddToCommandLine(updaterPath.UTF8String);
AddToCommandLine("--openAppBundle");
}
// We adjust the path to point to the .app bundle, rather than the executable
// itself, to allow for the use of the NSWorkspace API for launching and
// relaunching the application. We intentionally exclude the
// org.mozilla.updater binary because we are experiencing NSCocoaErrors of
// type `kLSUnknownErr` when trying to launch the updater.app with the
// NSWorkspace API, at least on macOS 10.15. The updater is launched using
// NSTask instead. We do not experience these NSCocoaErrors on more modern
// versions of macOS and we may be able to switch to the NSWorkspace API once
// we no longer support the older versions of macOS where these errors occur.
// See bug 1911178.
if (![path hasSuffix:@"org.mozilla.updater"] && ![path hasSuffix:@".app"]) {
// Ensure that the path in the first argument points to the .app bundle.
// This strips three last path components, for example:
//
// Firefox.app/Contents/MacOS/firefox -> Firefox.app
//
path = [[[path stringByDeletingLastPathComponent]
stringByDeletingLastPathComponent] stringByDeletingLastPathComponent];
}
if (![path hasSuffix:@"org.mozilla.updater"] && ![path hasSuffix:@".app"]) {
// We were unable to obtain the path to the .app bundle and are unable to
// build a valid command line.
return;
}
AddToCommandLine(path.UTF8String);
// Copy the rest of the args, stripping anything we don't want.
for (int arg = 1; arg < argc; arg++) {
char* flag = argv[arg];
// Don't pass on the psn (Process Serial Number) flag from the OS, or
// the "-foreground" flag since it will be set below if necessary.
if (strncmp(flag, "-psn_", 5) != 0 && strncmp(flag, "-foreground", 11) != 0)
AddToCommandLine(flag);
}
// Process the URLs we captured when the NSApp was first run and add them to
// the command line.
nsTArray<nsCString> startupURLs = TakeStartupURLs();
for (const nsCString& url : startupURLs) {
AddToCommandLine("-url");
AddToCommandLine(url.get());
}
// If the process will be relaunched, the child should be in the foreground
// if the parent is in the foreground. This will be communicated in a
// command-line argument to the child.
if (forRestart) {
NSRunningApplication* frontApp =
[[NSWorkspace sharedWorkspace] frontmostApplication];
if ([frontApp isEqual:[NSRunningApplication currentApplication]]) {
AddToCommandLine("-foreground");
}
}
free(argv);
argc = sArgsUsed;
argv = sArgs;
}
} // namespace CommandLineServiceMac
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