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<pre class="sourcecodebox">/*
File: AliasManager.c
Contains: Alias Manager command processing.
Written by: DTS
Copyright: Copyright (c) 2008 Apple Inc. All Rights Reserved.
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
("Apple") in consideration of your agreement to the following
terms, and your use, installation, modification or
redistribution of this Apple software constitutes acceptance of
these terms. If you do not agree with these terms, please do
not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following
terms, and subject to these terms, Apple grants you a personal,
non-exclusive license, under Apple's copyrights in this
original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or
without modifications, in source and/or binary forms; provided
that if you redistribute the Apple Software in its entirety and
without modifications, you must retain this notice and the
following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks
or logos of Apple Inc. may be used to endorse or promote
products derived from the Apple Software without specific prior
written permission from Apple. Except as expressly stated in
this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any
patent rights that may be infringed by your derivative works or
by other works in which the Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis.
APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING
THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY
OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY
OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR
OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#include "FieldPrinter.h"
#include "Command.h"
#pragma mark * GetAliasInfo
#if ! TARGET_RT_64_BIT
enum AliasFieldIndex {
kZoneName,
kServerName,
kVolumeName,
kAliasName,
kParentName,
kPathElements
};
typedef enum AliasFieldIndex AliasFieldIndex;
typedef unsigned int AliasFieldMask;
static const char kGetAliasInfoFieldSpacer[32] = "asiServerName";
static OSStatus PrintAliasField(AliasHandle aliasH, SInt16 infoIndex, const char *name, uint32_t indent, uint32_t verbose)
// Print a value (as determined by infoIndex, for example asiZoneName) from an alias.
{
OSStatus err;
Str63 fieldStr;
assert(aliasH != NULL);
err = GetAliasInfo(aliasH, infoIndex, fieldStr);
if (err == noErr) {
// kCFStringEncodingMacRoman is a guess because there's no good way to tell
// what the text encoding is.
FPPString(name, sizeof(fieldStr), fieldStr, indent, strlen(kGetAliasInfoFieldSpacer), verbose, kCFStringEncodingMacRoman);
}
return err;
}
static OSStatus PrintAliasWholePath(AliasHandle aliasH, uint32_t indent, uint32_t verbose)
// Print the path from the alias.
{
OSStatus err;
SInt16 infoIndex;
Str255 fieldStr;
char name[32];
fprintf(stdout, "%*sPath Elements\n", (int) indent, "");
infoIndex = asiAliasName;
do {
err = GetAliasInfo(aliasH, infoIndex, fieldStr);
if (err != noErr) {
break;
}
if (fieldStr[0] == 0) {
break;
}
snprintf(name, sizeof(name), "[%d]", infoIndex);
FPPString(name, sizeof(fieldStr), fieldStr, indent + kStdIndent, 7, verbose, kCFStringEncodingMacRoman);
infoIndex += 1;
} while (true);
return err;
}
static const FPFlagDesc kAliasFields[] = {
{ 1 << kZoneName, "asiZoneName" },
{ 1 << kServerName, "asiServerName" },
{ 1 << kVolumeName, "asiVolumeName" },
{ 1 << kAliasName, "asiAliasname" },
{ 1 << kParentName, "asiParentName" },
{ 1 << kPathElements, "asiPathElements" },
{ 0, NULL }
};
static CommandError PrintGetAliasinfo(CommandArgsRef args, uint32_t indent, uint32_t verbose)
// Uses GetAliasInfo to get information about the
// specified item and prints the result.
//
// indent and verbose are as per the comments for FPPrinter.
{
OSStatus err;
AliasFieldMask optionsMask;
FSRef itemRef;
AliasHandle itemAlias;
optionsMask = 0; // quiten warning
itemAlias = NULL;
if ( CommandArgsIsOption(args) ) {
uint64_t result;
err = CommandArgsGetFlagList(args, kAliasFields, &result);
if ( (err == noErr) && (result != 0) ) {
optionsMask = (AliasFieldMask) result;
} else {
err = kCommandUsageErr;
}
} else {
optionsMask =
(1 << kZoneName)
| (1 << kServerName)
| (1 << kVolumeName)
| (1 << kPathElements);
err = noErr;
}
// Make an alias to the item.
if (err == noErr) {
err = CommandArgsGetFSRef(args, &itemRef);
}
if (err == noErr) {
err = FSNewAlias(NULL, &itemRef, &itemAlias);
}
// Get and print info about it.
if ( (err == 0) && (optionsMask & (1 << kZoneName)) ) {
err = PrintAliasField(itemAlias, asiZoneName, "asiZoneName", indent + kStdIndent, verbose);
}
if ( (err == 0) && (optionsMask & (1 << kServerName)) ) {
err = PrintAliasField(itemAlias, asiServerName, "asiServerName", indent + kStdIndent, verbose);
}
if ( (err == 0) && (optionsMask & (1 << kVolumeName)) ) {
err = PrintAliasField(itemAlias, asiVolumeName, "asiVolumeName", indent + kStdIndent, verbose);
}
if ( (err == 0) && (optionsMask & (1 << kPathElements)) ) {
err = PrintAliasWholePath(itemAlias, indent + kStdIndent, verbose);
} else {
if ( (err == 0) && (optionsMask & (1 << kAliasName)) ) {
err = PrintAliasField(itemAlias, asiAliasName, "asiAliasName", indent + kStdIndent, verbose);
}
if ( (err == 0) && (optionsMask & (1 << kParentName)) ) {
err = PrintAliasField(itemAlias, asiParentName, "asiParentName", indent + kStdIndent, verbose);
}
}
// Clean up.
if (itemAlias != NULL) {
DisposeHandle( (Handle) itemAlias);
assert(MemError() == noErr);
}
return CommandErrorMakeWithOSStatus(err);
}
static const CommandHelpEntry kGetAliasInfoCommandHelp[] = {
{CommandHelpString, "-indexList Alias information to get; defaults to asiZoneName,"},
{CommandHelpString, " asiServerName,asiVolumeName,asiPathElements"},
{CommandHelpFlags, kAliasFields},
{NULL, NULL}
};
const CommandInfo kGetAliasInfoCommand = {
PrintGetAliasinfo,
"GetAliasInfo",
"[ -indexList ] itemPath",
"Print information from GetAliasinfo.",
kGetAliasInfoCommandHelp
};
#endif
#pragma mark * FSCopyAliasInfo
// The fields of the FSAliasInfo structure. These are broken up into three
// groups because FSCopyAliasInfo does not always return all information for
// a given alias.
static const char kFSAliasInfoFieldSpacer[32] = "volumeHasPersistentFileIDs";
static const FPFieldDesc kFSAliasInfoFieldDescVolumeCreateDate[] = {
{kFSAliasInfoFieldSpacer, 0, 0, FPNull, NULL}, // present to pad out field widths
{"volumeCreateDate", offsetof(FSAliasInfo, volumeCreateDate), sizeof(UTCDateTime), FPUTCDateTime, NULL},
{NULL, 0, 0, NULL, NULL}
};
static const FPFieldDesc kFSAliasInfoFieldDescTargetCreateDate[] = {
{kFSAliasInfoFieldSpacer, 0, 0, FPNull, NULL}, // present to pad out field widths
{"targetCreateDate", offsetof(FSAliasInfo, targetCreateDate), sizeof(UTCDateTime), FPUTCDateTime, NULL},
{NULL, 0, 0, NULL, NULL}
};
static const FPFieldDesc kFSAliasInfoFieldDescFinderInfo[] = {
{kFSAliasInfoFieldSpacer, 0, 0, FPNull, NULL}, // present to pad out field widths
{"fileType", offsetof(FSAliasInfo, fileType), sizeof(OSType), FPSignature, (const void *) (uintptr_t) kFPValueHostEndian},
{"fileCreator", offsetof(FSAliasInfo, fileCreator), sizeof(OSType), FPSignature, (const void *) (uintptr_t) kFPValueHostEndian},
{NULL, 0, 0, NULL, NULL}
};
static const FPFieldDesc kFSAliasInfoFieldDescFSInfo[] = {
{kFSAliasInfoFieldSpacer, 0, 0, FPNull, NULL}, // present to pad out field widths
{"filesystemID", offsetof(FSAliasInfo, filesystemID), sizeof(UInt16), FPSignature, (const void *) (uintptr_t) kFPValueHostEndian},
{"signature", offsetof(FSAliasInfo, signature), sizeof(UInt16), FPSignature, (const void *) (uintptr_t) kFPValueHostEndian},
{NULL, 0, 0, NULL, NULL}
};
static const FPFieldDesc kFSAliasInfoFieldDescIDs[] = {
{kFSAliasInfoFieldSpacer, 0, 0, FPNull, NULL}, // present to pad out field widths
{"parentDirID", offsetof(FSAliasInfo, parentDirID), sizeof(UInt32), FPUDec, NULL},
{"nodeID", offsetof(FSAliasInfo, nodeID), sizeof(UInt32), FPUDec, NULL},
{NULL, 0, 0, NULL, NULL}
};
static const FPFieldDesc kFSAliasInfoFieldDescVolumeFlags[] = {
{kFSAliasInfoFieldSpacer, 0, 0, FPNull, NULL}, // present to pad out field widths
{"volumeIsBootVolume", offsetof(FSAliasInfo, volumeIsBootVolume), sizeof(Boolean), FPBoolean, NULL},
{"volumeIsAutomounted", offsetof(FSAliasInfo, volumeIsAutomounted), sizeof(Boolean), FPBoolean, NULL},
{"volumeIsEjectable", offsetof(FSAliasInfo, volumeIsEjectable), sizeof(Boolean), FPBoolean, NULL},
{"volumeHasPersistentFileIDs", offsetof(FSAliasInfo, volumeHasPersistentFileIDs), sizeof(Boolean), FPBoolean, NULL},
{NULL, 0, 0, NULL, NULL}
};
static const FPFieldDesc kFSAliasInfoFieldDescIsDirectory[] = {
{kFSAliasInfoFieldSpacer, 0, 0, FPNull, NULL}, // present to pad out field widths
{"isDirectory", offsetof(FSAliasInfo, isDirectory), sizeof(Boolean), FPBoolean, NULL},
{NULL, 0, 0, NULL, NULL}
};
enum {
kRequestTargetName = (1 << 0),
kRequestVolumeName = (1 << 1),
kRequestPathString = (1 << 2),
kRequestInfo = (1 << 4),
kRequestEverything =
kRequestTargetName
| kRequestVolumeName
| kRequestPathString
| kRequestInfo
};
static const FPFlagDesc kRequestFlags[] = {
{ kRequestTargetName, "targetName" },
{ kRequestVolumeName, "volumeName" },
{ kRequestPathString, "pathString" },
{ kRequestInfo, "info" },
{ 0, NULL }
};
static int AliasInfoBitMapTester(const char *item, void *refCon)
// A CommandParseItemString that tests whether the item is in kRequestFlags
// and, if so, set this corresponding bit in *refCon.
{
int err;
uint32_t * requestedInfoPtr;
size_t flagIndex;
assert(item != NULL);
requestedInfoPtr = (uint32_t *) refCon;
assert(requestedInfoPtr != NULL);
flagIndex = FPFindFlagByName(kRequestFlags, item);
if (flagIndex == kFPNotFound) {
err = EUSAGE;
} else {
*requestedInfoPtr |= (uint32_t) kRequestFlags[flagIndex].flagMask;
err = 0;
}
return err;
}
static CommandError PrintFSCopyAliasInfo(CommandArgsRef args, uint32_t indent, uint32_t verbose)
// Uses FSCopyAliasInfo to get information about the
// specified item and prints the result.
//
// indent and verbose are as per the comments for FPPrinter.
{
OSStatus err;
const char * optionsStr;
FSRef itemRef;
AliasHandle itemAlias;
uint32_t requestedInfo;
FSAliasInfoBitmap returnedInInfo;
HFSUniStr255 targetName;
HFSUniStr255 volumeName;
CFStringRef pathString;
FSAliasInfo info;
itemAlias = NULL;
pathString = NULL;
err = noErr;
if ( CommandArgsGetOptionString(args, &optionsStr) ) {
requestedInfo = 0;
assert(optionsStr[0] == '-');
if ( CommandParseItemString(&optionsStr[1], ',', AliasInfoBitMapTester, &requestedInfo) != 0 ) {
err = kCommandUsageErr;
}
} else {
requestedInfo = kRequestEverything;
}
// Make an alias to the item.
if (err == noErr) {
err = CommandArgsGetFSRef(args, &itemRef);
}
if (err == noErr) {
err = FSNewAlias(NULL, &itemRef, &itemAlias);
}
// Get info about it.
if (err == noErr) {
err = FSCopyAliasInfo(
itemAlias,
(requestedInfo & kRequestTargetName) ? &targetName : NULL,
(requestedInfo & kRequestVolumeName) ? &volumeName : NULL,
(requestedInfo & kRequestPathString) ? &pathString : NULL,
(requestedInfo & kRequestInfo) ? &returnedInInfo : NULL,
(requestedInfo & kRequestInfo) ? &info : NULL
);
}
// Print that info.
if (err == noErr) {
if (requestedInfo & kRequestTargetName) {
HFSUniStr255FieldPrinter("targetName", sizeof(targetName), &targetName, indent, strlen(kFSAliasInfoFieldSpacer), verbose, NULL);
}
if (requestedInfo & kRequestVolumeName) {
HFSUniStr255FieldPrinter("volumeName", sizeof(volumeName), &volumeName, indent, strlen(kFSAliasInfoFieldSpacer), verbose, NULL);
}
if (requestedInfo & kRequestPathString) {
FPCFString("pathString", sizeof(pathString), &pathString, indent, strlen(kFSAliasInfoFieldSpacer), verbose, NULL);
}
if (requestedInfo & kRequestInfo) {
if (returnedInInfo & kFSAliasInfoVolumeCreateDate) {
FPPrintFields(kFSAliasInfoFieldDescVolumeCreateDate, &info, sizeof(info), indent, verbose);
}
if (returnedInInfo & kFSAliasInfoTargetCreateDate) {
FPPrintFields(kFSAliasInfoFieldDescTargetCreateDate, &info, sizeof(info), indent, verbose);
}
if (returnedInInfo & kFSAliasInfoFinderInfo) {
FPPrintFields(kFSAliasInfoFieldDescFinderInfo, &info, sizeof(info), indent, verbose);
}
if (returnedInInfo & kFSAliasInfoIsDirectory) {
FPPrintFields(kFSAliasInfoFieldDescIsDirectory, &info, sizeof(info), indent, verbose);
}
if (returnedInInfo & kFSAliasInfoIDs) {
FPPrintFields(kFSAliasInfoFieldDescIDs, &info, sizeof(info), indent, verbose);
}
if (returnedInInfo & kFSAliasInfoFSInfo) {
FPPrintFields(kFSAliasInfoFieldDescFSInfo, &info, sizeof(info), indent, verbose);
}
if (returnedInInfo & kFSAliasInfoVolumeFlags) {
FPPrintFields(kFSAliasInfoFieldDescVolumeFlags, &info, sizeof(info), indent, verbose);
}
}
}
if (pathString != NULL) {
CFRelease(pathString);
}
if (itemAlias != NULL) {
DisposeHandle( (Handle) itemAlias);
assert(MemError() == noErr);
}
return CommandErrorMakeWithOSStatus(err);
}
static const CommandHelpEntry kFSCopyAliasInfoCommandHelp[] = {
{CommandHelpString, "-paramList Alias information to get; defaults to everything"},
{CommandHelpFlags, kRequestFlags},
{NULL, NULL}
};
const CommandInfo kFSCopyAliasInfoCommand = {
PrintFSCopyAliasInfo,
"FSCopyAliasInfo",
"[ -paramList ] itemPath",
"Print information from FSCopyAliasInfo.",
kFSCopyAliasInfoCommandHelp
};
</pre>
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