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boinc/mac_installer/uninstall.cpp

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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
/* uninstall.cpp */
#define TESTING 0 /* for debugging */
#include <Carbon/Carbon.h>
#include <Security/Authorization.h>
#include <Security/AuthorizationTags.h>
#include <grp.h>
#include <unistd.h> // geteuid, seteuid
#include <pwd.h> // passwd, getpwnam
#include <dirent.h>
#include <sys/param.h> // for MAXPATHLEN
#include "LoginItemAPI.h" //please take a look at LoginItemAPI.h for an explanation of the routines available to you.
static OSStatus DoUninstall(void);
static OSStatus GetpathToBOINCManagerApp(char* path, int maxLen, FSRef *theFSRef);
static OSStatus CleanupAllVisibleUsers(void);
static OSStatus DeleteOurBundlesFromDirectory(CFStringRef bundleID, char *extension, char *dirPath);
static OSStatus GetAuthorization(AuthorizationRef * authRef, const char *pathToTool, char *brandName);
static OSStatus DoPrivilegedExec(char *brandName, const char *pathToTool, char *arg1, char *arg2, char *arg3, char *arg4, char *arg5);
static void DeleteLoginItem(void);
static char * PersistentFGets(char *buf, size_t buflen, FILE *f);
static pid_t FindProcessPID(char* name, pid_t thePID);
static OSStatus QuitBOINCManager(OSType signature);
//static void SleepTicks(UInt32 ticksToSleep);
static Boolean ShowMessage(Boolean allowCancel, const char *format, ...);
int main(int argc, char *argv[])
{
char pathToSelf[MAXPATHLEN], appName[256], *p;
ProcessSerialNumber ourPSN;
FSRef ourFSRef;
Boolean cancelled = false;
OSStatus err = noErr;
// Determine whether this is the intial launch or the relaunch with privileges
if ( (argc == 2) && (strcmp(argv[1], "--privileged") == 0) ) {
if (geteuid() != 0) { // Confirm that we are running as root
ShowMessage(false, "Permission error after relaunch");
return permErr;
}
return DoUninstall();
}
// This is the initial launch. Authenticate and relaunch ourselves with privileges.
// Get the full path to our executable inside this application's bundle
err = GetCurrentProcess (&ourPSN);
if (err == noErr) {
err = GetProcessBundleLocation(&ourPSN, &ourFSRef);
}
if (err == noErr) {
err = FSRefMakePath (&ourFSRef, (UInt8*)pathToSelf, sizeof(pathToSelf));
}
if (err != noErr) {
ShowMessage(false, "Couldn't get path to self. Error %d", err);
return err;
}
// To allow for branding, assume name of executable inside bundle is same as name of bundle
p = strrchr(pathToSelf, '/'); // Assume name of executable inside bundle is same as name of bundle
if (p == NULL)
p = pathToSelf - 1;
strlcpy(appName, p+1, sizeof(appName));
p = strrchr(appName, '.'); // Strip off bundle extension (".app")
if (p)
*p = '\0';
strlcat(pathToSelf, "/Contents/MacOS/", sizeof(pathToSelf));
strlcat(pathToSelf, appName, sizeof(pathToSelf));
p = strchr(appName, ' ');
p += 1; // Point to brand name following "Uninstall "
if (GetResource('ALRT', 128)) {
// BOINC uses custom dialog with custom PICT
cancelled = (Alert(128, NULL) == cancel);
} else {
// Grid Republic uses generic dialog with Uninstall application's icon
cancelled = ! ShowMessage(true, "Are you sure you want to completely remove %s from your computer?\n\n"
"This will remove the executables but will not touch %s data files.", p, p);
}
if (! cancelled)
err = DoPrivilegedExec(p, pathToSelf, "--privileged", NULL, NULL, NULL, NULL);
if (cancelled || (err == errAuthorizationCanceled)) {
ShowMessage(false, "Canceled: %s has not been touched.", p);
return err;
}
#if TESTING
ShowMessage(false, "DoPrivilegedExec returned %d", err);
#endif
if (err)
ShowMessage(false, "An error occurred: error code %d", err);
else
ShowMessage(false, "Removal completed.\n\n You may want to remove the following remaining items using the Finder: \n"
"\"/Library/Application Support/BOINC Data\" directory\n\nfor each user, the file\n"
"\"/Users/[username]/Library/Preferences/BOINC Manager Preferences\".");
return err;
}
static OSStatus DoUninstall(void) {
pid_t coreClientPID = 0;
char myRmCommand[MAXPATHLEN+10], plistRmCommand[MAXPATHLEN+10], *p;
char notBoot[] = "/Volumes/";
char cmd[1024];
FSRef theFSRef;
int pathOffset, i;
passwd *pw;
OSStatus err = noErr;
#if TESTING
ShowMessage(false, "Permission OK after relaunch");
#endif
QuitBOINCManager('BNC!'); // Quit any old instance of BOINC manager
sleep(2);
// Core Client may still be running if it was started without Manager
coreClientPID = FindProcessPID("boinc", 0);
if (coreClientPID)
kill(coreClientPID, SIGTERM); // boinc catches SIGTERM & exits gracefully
// Phase 1: try to find all our applications using LaunchServices
for (i=0; i<100; i++) {
strlcpy(myRmCommand, "rm -rf \"", 10);
pathOffset = strlen(myRmCommand);
err = GetpathToBOINCManagerApp(myRmCommand+pathOffset, MAXPATHLEN, &theFSRef);
if (err)
break;
strlcat(myRmCommand, "\"", sizeof(myRmCommand));
#if TESTING
ShowMessage(false, "manager: %s", myRmCommand);
#endif
p = strstr(myRmCommand, notBoot);
if (p == myRmCommand+pathOffset) {
#if TESTING
ShowMessage(false, "Not on boot volume: %s", myRmCommand);
#endif
break;
} else {
// First delete just the application's info.plist file and update the
// LaunchServices Database; otherwise LSFindApplicationForInfo might
// return this application again after it's been deleted.
strlcpy(plistRmCommand, myRmCommand, sizeof(plistRmCommand));
strlcat(plistRmCommand, "/Contents/info.plist", sizeof(plistRmCommand));
#if TESTING
ShowMessage(false, "Deleting info.plist: %s", plistRmCommand);
#endif
system(plistRmCommand);
err = LSRegisterFSRef(&theFSRef, true);
#if TESTING
if (err)
ShowMessage(false, "LSRegisterFSRef returned error %d", err);
#endif
system(myRmCommand);
}
}
// Phase 2: step through default Applications directory searching for our applications
err = DeleteOurBundlesFromDirectory(CFSTR("edu.berkeley.boinc"), "app", "/Applications");
// Phase 3: step through default Screen Savers directory searching for our screen savers
err = DeleteOurBundlesFromDirectory(CFSTR("edu.berkeley.boincsaver"), "saver", "/Library/Screen Savers");
// Phase 4: Delete our files and directories at our installer's default locations
// Remove everything we've installed, whether BOINC, GridRepublic or Progress Thru Processors
// These first 4 should already have been deleted by the above code, but do them anyway for safety
system ("rm -rf /Applications/BOINCManager.app");
system ("rm -rf \"/Library/Screen Savers/BOINCSaver.saver\"");
system ("rm -rf \"/Applications/GridRepublic Desktop.app\"");
system ("rm -rf \"/Library/Screen Savers/GridRepublic.saver\"");
system ("rm -rf \"/Applications/Progress\\ Thru\\ Processors\\ Desktop.app\"");
system ("rm -rf \"/Library/Screen Savers/Progress\\ Thru\\ Processors.saver\"");
system ("rm -rf /Library/Receipts/GridRepublic.pkg");
system ("rm -rf /Library/Receipts/Progress\\ Thru\\ Processors.pkg");
system ("rm -rf /Library/Receipts/BOINC.pkg");
// Phase 5: Set BOINC Data owner and group to logged in user
// We don't customize BOINC Data directory name for branding
// system ("rm -rf \"/Library/Application Support/BOINC Data\"");
p = getlogin();
pw = getpwnam(p);
sprintf(cmd, "chown -R %d:%d \"/Library/Application Support/BOINC Data\"", pw->pw_uid, pw->pw_gid);
system (cmd);
system("chmod -R u+rw-s,g+r-w-s,o+r-w \"/Library/Application Support/BOINC Data\"");
system("chmod 600 \"/Library/Application Support/BOINC Data/gui_rpc_auth.cfg\"");
// Phase 6: step through all users and do user-specific cleanup
CleanupAllVisibleUsers();
system ("dscl . -delete /users/boinc_master");
system ("dscl . -delete /groups/boinc_master");
system ("dscl . -delete /users/boinc_project");
system ("dscl . -delete /groups/boinc_project");
return 0;
}
static OSStatus GetpathToBOINCManagerApp(char* path, int maxLen, FSRef *theFSRef)
{
CFStringRef bundleID = CFSTR("edu.berkeley.boinc");
OSType creator = 'BNC!';
OSStatus status = noErr;
status = LSFindApplicationForInfo(creator, bundleID, NULL, theFSRef, NULL);
if (status) {
#if TESTING
ShowMessage(false, "LSFindApplicationForInfo returned error %d", status);
#endif
return status;
}
status = FSRefMakePath(theFSRef, (unsigned char *)path, maxLen);
#if TESTING
if (status)
ShowMessage(false, "GetpathToBOINCManagerApp FSRefMakePath returned error %d, %s", status, path);
#endif
return status;
}
static OSStatus DeleteOurBundlesFromDirectory(CFStringRef bundleID, char *extension, char *dirPath) {
DIR *dirp;
dirent *dp;
CFStringRef urlStringRef = NULL;
int index;
CFStringRef thisID = NULL;
CFBundleRef thisBundle = NULL;
CFURLRef bundleURLRef = NULL;
char myRmCommand[MAXPATHLEN+10], *p;
int pathOffset;
dirp = opendir(dirPath);
if (dirp == NULL) { // Should never happen
ShowMessage(false, "opendir(\"%s\") failed", dirPath);
return -1;
}
index = -1;
while (true) {
index++;
dp = readdir(dirp);
if (dp == NULL)
break; // End of list
p = strrchr(dp->d_name, '.');
if (p == NULL)
continue;
if (strcmp(p+1, extension))
continue;
strlcpy(myRmCommand, "rm -rf \"", 10);
pathOffset = strlen(myRmCommand);
strlcat(myRmCommand, dirPath, sizeof(myRmCommand));
strlcat(myRmCommand, "/", sizeof(myRmCommand));
strlcat(myRmCommand, dp->d_name, sizeof(myRmCommand));
urlStringRef = CFStringCreateWithCString(kCFAllocatorDefault, myRmCommand+pathOffset, CFStringGetSystemEncoding());
if (urlStringRef) {
bundleURLRef = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, urlStringRef, kCFURLPOSIXPathStyle, false);
if (bundleURLRef) {
thisBundle = CFBundleCreate( kCFAllocatorDefault, bundleURLRef );
if (thisBundle) {
thisID = CFBundleGetIdentifier(thisBundle);
if (thisID) {
strlcat(myRmCommand, "\"", sizeof(myRmCommand));
if (CFStringCompare(thisID, bundleID, 0) == kCFCompareEqualTo) {
#if TESTING
ShowMessage(false, "Bundles: %s", myRmCommand);
#endif
system(myRmCommand);
} else {
#if TESTING
// ShowMessage(false, "Bundles: Not deleting %s", myRmCommand+pathOffset);
#endif
}
} // if (thisID)
#if TESTING
else
ShowMessage(false, "CFBundleGetIdentifier failed for index %d", index);
#endif
CFRelease(thisBundle);
} //if (thisBundle)
#if TESTING
else
ShowMessage(false, "CFBundleCreate failed for index %d", index);
#endif
CFRelease(bundleURLRef);
} // if (bundleURLRef)
#if TESTING
else
ShowMessage(false, "CFURLCreateWithFileSystemPath failed");
#endif
CFRelease(urlStringRef);
} // if (urlStringRef)
#if TESTING
else
ShowMessage(false, "CFStringCreateWithCString failed");
#endif
} // while true
closedir(dirp);
return noErr;
}
// Find all visible users and delete their login item to launch BOINC Manager.
// Remove each user from groups boinc_master and boinc_project.
// For now, don't delete user's BOINC Preferences file.
static OSStatus CleanupAllVisibleUsers(void)
{
DIR *dirp;
dirent *dp;
passwd *pw;
uid_t saved_uid, saved_euid;
char s[1024];
FILE *f;
long OSVersion = 0;
OSStatus err;
Boolean changeSaver;
err = Gestalt(gestaltSystemVersion, &OSVersion);
if (err != noErr) {
OSVersion = 0;
}
dirp = opendir("/Users");
if (dirp == NULL) { // Should never happen
ShowMessage(false, "opendir(\"/Users\") failed");
return -1;
}
saved_uid = getuid();
saved_euid = geteuid();
while (true) {
dp = readdir(dirp);
if (dp == NULL)
break; // End of list
if (dp->d_name[0] == '.')
continue; // Ignore names beginning with '.'
pw = getpwnam(dp->d_name);
if (pw == NULL) // "Deleted Users", "Shared", etc.
continue;
// Remove user from groups boinc_master and boinc_project
sprintf(s, "dscl . -delete /groups/boinc_master users %s", dp->d_name);
system (s);
sprintf(s, "dscl . -delete /groups/boinc_project users %s", dp->d_name);
system (s);
#if TESTING
// ShowMessage(false, "Before seteuid(%d) for user %s, euid = %d", pw->pw_uid, dp->d_name, geteuid());
#endif
if (OSVersion >= 0x1060) {
setuid(0);
}
seteuid(pw->pw_uid); // Temporarily set effective uid to this user
DeleteLoginItem(); // Delete our login item(s) for this user
// sprintf(s, "rm -f \"/Users/%s/Library/Preferences/BOINC Manager Preferences\"", dp->d_name);
// system (s);
// Set screensaver to "Computer Name" default screensaver only
// if it was BOINC, GridRepublic or Progress Thru Processors.
changeSaver = false;
if (OSVersion < 0x1060) {
f = popen("defaults -currentHost read com.apple.screensaver moduleName", "r");
} else {
sprintf(s, "sudo -u %s defaults -currentHost read com.apple.screensaver moduleDict -dict",
dp->d_name);
f = popen(s, "r");
}
if (f) {
while (PersistentFGets(s, sizeof(s), f)) {
if (strstr(s, "BOINCSaver")) {
changeSaver = true;
break;
}
if (strstr(s, "GridRepublic")) {
changeSaver = true;
break;
}
if (strstr(s, "Progress Thru Processors")) {
changeSaver = true;
break;
}
}
pclose(f);
}
if (changeSaver) {
if (OSVersion < 0x1060) {
system ("defaults -currentHost write com.apple.screensaver moduleName \"Computer Name\"");
system ("defaults -currentHost write com.apple.screensaver modulePath \"/System/Library/Frameworks/ScreenSaver.framework/Versions/A/Resources/Computer Name.saver\"");
} else {
sprintf(s,
"sudo -u %s defaults -currentHost write com.apple.screensaver moduleDict -dict moduleName \"Computer Name\" path \"/System/Library/Frameworks/ScreenSaver.framework/Versions/A/Resources/Computer Name.saver\"",
dp->d_name);
system (s);
}
}
seteuid(saved_euid); // Set effective uid back to privileged user
#if TESTING
// ShowMessage(false, "After seteuid(%d) for user %s, euid = %d, saved_uid = %d", pw->pw_uid, dp->d_name, geteuid(), saved_uid);
#endif
}
closedir(dirp);
return noErr;
}
static OSStatus GetAuthorization(AuthorizationRef * authRef, const char *pathToTool, char *brandName) {
static Boolean sIsAuthorized = false;
AuthorizationRights ourAuthRights;
AuthorizationFlags ourAuthFlags;
AuthorizationItem ourAuthRightsItem[1];
AuthorizationEnvironment ourAuthEnvironment;
AuthorizationItem ourAuthEnvItem[1];
char prompt[256];
OSStatus err = noErr;
if (sIsAuthorized)
return noErr;
sprintf(prompt, "Enter administrator password to completely remove %s from you computer.\n\n", brandName);
ourAuthRights.count = 0;
ourAuthRights.items = NULL;
err = AuthorizationCreate (&ourAuthRights, kAuthorizationEmptyEnvironment, kAuthorizationFlagDefaults, authRef);
if (err != noErr) {
ShowMessage(false, "AuthorizationCreate returned error %d", err);
return err;
}
ourAuthRightsItem[0].name = kAuthorizationRightExecute;
ourAuthRightsItem[0].value = (void *)pathToTool;
ourAuthRightsItem[0].valueLength = strlen (pathToTool);
ourAuthRightsItem[0].flags = 0;
ourAuthRights.count = 1;
ourAuthRights.items = ourAuthRightsItem;
ourAuthEnvItem[0].name = kAuthorizationEnvironmentPrompt;
ourAuthEnvItem[0].value = prompt;
ourAuthEnvItem[0].valueLength = strlen (prompt);
ourAuthEnvItem[0].flags = 0;
ourAuthEnvironment.count = 1;
ourAuthEnvironment.items = ourAuthEnvItem;
ourAuthFlags = kAuthorizationFlagInteractionAllowed | kAuthorizationFlagExtendRights;
// When this is called from the installer, the installer has already authenticated.
// In that case we are already running with full root privileges so AuthorizationCopyRights()
// does not request a password from the user again.
err = AuthorizationCopyRights (*authRef, &ourAuthRights, &ourAuthEnvironment, ourAuthFlags, NULL);
if (err == noErr)
sIsAuthorized = true;
return err;
}
static OSStatus DoPrivilegedExec(char *brandName, const char *pathToTool, char *arg1, char *arg2, char *arg3, char *arg4, char *arg5) {
AuthorizationRef authRef = NULL;
short i;
char *args[8];
OSStatus err;
FILE *ioPipe;
char *p, junk[256];
err = GetAuthorization(&authRef, pathToTool, brandName);
if (err != noErr) {
if (err != errAuthorizationCanceled)
ShowMessage(false, "GetAuthorization returned error %d", err);
return err;
}
for (i=0; i<5; i++) { // Retry 5 times if error
args[0] = arg1;
args[1] = arg2;
args[2] = arg3;
args[3] = arg4;
args[4] = arg5;
args[5] = NULL;
err = AuthorizationExecuteWithPrivileges (authRef, pathToTool, 0, args, &ioPipe);
// We use the pipe to signal us when the command has completed
if (ioPipe) {
do {
p = fgets(junk, sizeof(junk), ioPipe);
} while (p);
fclose (ioPipe);
}
if (err == noErr)
break;
}
if (err != noErr)
ShowMessage(false, "\"%s %s %s %s %s %s\" returned error %d", pathToTool,
arg1 ? arg1 : "", arg2 ? arg2 : "", arg3 ? arg3 : "",
arg4 ? arg4 : "", arg5 ? arg5 : "", err);
return err;
}
static void DeleteLoginItem(void)
{
Boolean Success;
int NumberOfLoginItems, Counter;
char *p, *q;
Success = false;
NumberOfLoginItems = GetCountOfLoginItems(kCurrentUser);
// Search existing login items in reverse order, deleting ours
for (Counter = NumberOfLoginItems ; Counter > 0 ; Counter--)
{
p = ReturnLoginItemPropertyAtIndex(kCurrentUser, kApplicationNameInfo, Counter-1);
q = p;
while (*q)
{
// It is OK to modify the returned string because we "own" it
*q = toupper(*q); // Make it case-insensitive
q++;
}
if (strcmp(p, "BOINCMANAGER.APP") == 0)
Success = RemoveLoginItemAtIndex(kCurrentUser, Counter-1);
if (strcmp(p, "GRIDREPUBLIC DESKTOP.APP") == 0)
Success = RemoveLoginItemAtIndex(kCurrentUser, Counter-1);
if (strcmp(p, "PROGRESS THRU PROCESSORS DESKTOP.APP") == 0)
Success = RemoveLoginItemAtIndex(kCurrentUser, Counter-1);
}
}
static char * PersistentFGets(char *buf, size_t buflen, FILE *f) {
char *p = buf;
size_t len = buflen;
size_t datalen = 0;
*buf = '\0';
while (datalen < (buflen - 1)) {
fgets(p, len, f);
if (feof(f)) break;
if (ferror(f) && (errno != EINTR)) break;
if (strchr(buf, '\n')) break;
datalen = strlen(buf);
p = buf + datalen;
len -= datalen;
}
return (buf[0] ? buf : NULL);
}
static pid_t FindProcessPID(char* name, pid_t thePID)
{
FILE *f;
char buf[1024];
size_t n = 0;
pid_t aPID;
if (name != NULL) // Search ny name
n = strlen(name);
f = popen("ps -a -x -c -o command,pid", "r");
if (f == NULL)
return 0;
while (PersistentFGets(buf, sizeof(buf), f))
{
if (name != NULL) { // Search by name
if (strncmp(buf, name, n) == 0)
{
aPID = atol(buf+16);
pclose(f);
return aPID;
}
} else { // Search by PID
aPID = atol(buf+16);
if (aPID == thePID) {
pclose(f);
return aPID;
}
}
}
pclose(f);
return 0;
}
static OSStatus QuitBOINCManager(OSType signature) {
bool done = false;
ProcessSerialNumber thisPSN;
ProcessInfoRec thisPIR;
OSStatus err = noErr;
Str63 thisProcessName;
AEAddressDesc thisPSNDesc;
AppleEvent thisQuitEvent, thisReplyEvent;
thisPIR.processInfoLength = sizeof (ProcessInfoRec);
thisPIR.processName = thisProcessName;
thisPIR.processAppSpec = nil;
thisPSN.highLongOfPSN = 0;
thisPSN.lowLongOfPSN = kNoProcess;
while (done == false) {
err = GetNextProcess(&thisPSN);
if (err == procNotFound)
done = true; // apparently the demo app isn't running. Odd but not impossible
else {
err = GetProcessInformation(&thisPSN,&thisPIR);
if (err != noErr)
goto bail;
if (thisPIR.processSignature == signature) { // is it or target process?
err = AECreateDesc(typeProcessSerialNumber, (Ptr)&thisPSN,
sizeof(thisPSN), &thisPSNDesc);
if (err != noErr)
goto bail;
// Create the 'quit' Apple event for this process.
err = AECreateAppleEvent(kCoreEventClass, kAEQuitApplication, &thisPSNDesc,
kAutoGenerateReturnID, kAnyTransactionID, &thisQuitEvent);
if (err != noErr) {
AEDisposeDesc (&thisPSNDesc);
goto bail; // don't know how this could happen, but limp gamely onward
}
// send the event
err = AESend(&thisQuitEvent, &thisReplyEvent, kAEWaitReply,
kAENormalPriority, kAEDefaultTimeout, 0L, 0L);
AEDisposeDesc (&thisQuitEvent);
AEDisposeDesc (&thisPSNDesc);
#if 0
if (err == errAETimeout) {
pid_t thisPID;
err = GetProcessPID(&thisPSN , &thisPID);
if (err == noErr)
err = kill(thisPID, SIGKILL);
}
#endif
done = true; // we've killed the process, presumably
}
}
}
bail:
return err;
}
#if 0
// Uses usleep to sleep for full duration even if a signal is received
static void SleepTicks(UInt32 ticksToSleep) {
UInt32 endSleep, timeNow, ticksRemaining;
timeNow = TickCount();
ticksRemaining = ticksToSleep;
endSleep = timeNow + ticksToSleep;
while ( (timeNow < endSleep) && (ticksRemaining <= ticksToSleep) ) {
usleep(16667 * ticksRemaining);
timeNow = TickCount();
ticksRemaining = endSleep - timeNow;
}
}
#endif
static Boolean ShowMessage(Boolean allowCancel, const char *format, ...) {
va_list args;
char s[1024];
short itemHit;
AlertStdAlertParamRec alertParams;
ProcessSerialNumber ourProcess;
va_start(args, format);
s[0] = vsprintf(s+1, format, args);
va_end(args);
alertParams.movable = true;
alertParams.helpButton = false;
alertParams.filterProc = NULL;
alertParams.defaultText = (StringPtr)-1;
alertParams.cancelText = allowCancel ? (StringPtr)-1 : NULL;
alertParams.otherText = NULL;
alertParams.defaultButton = kAlertStdAlertOKButton;
alertParams.cancelButton = allowCancel ? kAlertStdAlertCancelButton : 0;
alertParams.position = kWindowDefaultPosition;
::GetCurrentProcess (&ourProcess);
::SetFrontProcess(&ourProcess);
StandardAlert (kAlertNoteAlert, (StringPtr)s, NULL, &alertParams, &itemHit);
return (itemHit == kAlertStdAlertOKButton);
}
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