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Sweden-Number/tools/winedump/lnk.c

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/*
* Dump a shortcut (lnk) file
*
* Copyright 2005 Mike McCormack
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <fcntl.h>
#include "windef.h"
#include "winbase.h"
#include "winedump.h"
#include "pshpack1.h"
typedef enum {
SLDF_HAS_ID_LIST = 0x00000001,
SLDF_HAS_LINK_INFO = 0x00000002,
SLDF_HAS_NAME = 0x00000004,
SLDF_HAS_RELPATH = 0x00000008,
SLDF_HAS_WORKINGDIR = 0x00000010,
SLDF_HAS_ARGS = 0x00000020,
SLDF_HAS_ICONLOCATION = 0x00000040,
SLDF_UNICODE = 0x00000080,
SLDF_FORCE_NO_LINKINFO = 0x00000100,
SLDF_HAS_EXP_SZ = 0x00000200,
SLDF_RUN_IN_SEPARATE = 0x00000400,
SLDF_HAS_LOGO3ID = 0x00000800,
SLDF_HAS_DARWINID = 0x00001000,
SLDF_RUNAS_USER = 0x00002000,
SLDF_HAS_EXP_ICON_SZ = 0x00004000,
SLDF_NO_PIDL_ALIAS = 0x00008000,
SLDF_FORCE_UNCNAME = 0x00010000,
SLDF_RUN_WITH_SHIMLAYER = 0x00020000,
SLDF_FORCE_NO_LINKTRACK = 0x00040000,
SLDF_ENABLE_TARGET_METADATA = 0x00080000,
SLDF_DISABLE_KNOWNFOLDER_RELATIVE_TRACKING = 0x00200000,
SLDF_RESERVED = 0x80000000,
} SHELL_LINK_DATA_FLAGS;
#define EXP_SZ_LINK_SIG 0xa0000001
#define EXP_SPECIAL_FOLDER_SIG 0xa0000005
#define EXP_DARWIN_ID_SIG 0xa0000006
#define EXP_SZ_ICON_SIG 0xa0000007
#define EXP_PROPERTYSTORAGE_SIG 0xa0000009
typedef struct tagDATABLOCKHEADER
{
UINT cbSize;
UINT dwSignature;
} DATABLOCK_HEADER;
typedef struct _LINK_HEADER
{
UINT dwSize; /* 0x00 size of the header - 0x4c */
GUID MagicGuid; /* 0x04 is CLSID_ShellLink */
UINT dwFlags; /* 0x14 describes elements following */
UINT dwFileAttr; /* 0x18 attributes of the target file */
FILETIME Time1; /* 0x1c */
FILETIME Time2; /* 0x24 */
FILETIME Time3; /* 0x2c */
UINT dwFileLength; /* 0x34 File length */
UINT nIcon; /* 0x38 icon number */
UINT fStartup; /* 0x3c startup type */
UINT wHotKey; /* 0x40 hotkey */
UINT Unknown5; /* 0x44 */
UINT Unknown6; /* 0x48 */
} LINK_HEADER, * PLINK_HEADER;
typedef struct tagLINK_SZ_BLOCK
{
UINT size;
UINT magic;
CHAR bufA[MAX_PATH];
WCHAR bufW[MAX_PATH];
} LINK_SZ_BLOCK;
typedef struct tagLINK_PROPERTYSTORAGE_GUID
{
UINT size;
UINT magic;
GUID fmtid;
} LINK_PROPERTYSTORAGE_GUID;
typedef struct tagLINK_PROPERTYSTORAGE_VALUE
{
UINT size;
UINT pid;
BYTE unknown8;
UINT vt;
UINT unknown25;
} LINK_PROPERTYSTORAGE_VALUE;
typedef struct _LOCATION_INFO
{
UINT dwTotalSize;
UINT dwHeaderSize;
UINT dwFlags;
UINT dwVolTableOfs;
UINT dwLocalPathOfs;
UINT dwNetworkVolTableOfs;
UINT dwFinalPathOfs;
} LOCATION_INFO;
typedef struct _LOCAL_VOLUME_INFO
{
UINT dwSize;
UINT dwType;
UINT dwVolSerial;
UINT dwVolLabelOfs;
} LOCAL_VOLUME_INFO;
typedef struct _NETWORK_VOLUME_INFO
{
UINT dwSize;
UINT dwUnknown1;
UINT dwShareNameOfs;
UINT dwReserved;
UINT dwUnknown2;
} NETWORK_VOLUME_INFO;
typedef struct
{
UINT cbSize;
UINT dwSignature;
UINT idSpecialFolder;
UINT cbOffset;
} EXP_SPECIAL_FOLDER;
typedef struct lnk_string_tag
{
unsigned short size;
union {
unsigned short w[1];
unsigned char a[1];
} str;
} lnk_string;
#include "poppack.h"
static unsigned offset;
static const void* fetch_block(void)
{
const unsigned* u;
const void* ret;
if (!(u = PRD(offset, sizeof(*u)))) return 0;
if ((ret = PRD(offset, *u))) offset += *u;
return ret;
}
static const lnk_string* fetch_string(int unicode)
{
const unsigned short* s;
unsigned short len;
const void* ret;
if (!(s = PRD(offset, sizeof(*s)))) return 0;
len = *s * (unicode ? sizeof(WCHAR) : sizeof(char));
if ((ret = PRD(offset, sizeof(*s) + len))) offset += sizeof(*s) + len;
return ret;
}
static void dump_pidl(void)
{
const lnk_string *pidl;
int i, n = 0, sz = 0;
pidl = fetch_string(FALSE);
if (!pidl)
return;
printf("PIDL\n");
printf("----\n\n");
while(sz<pidl->size)
{
const lnk_string *segment = (const lnk_string*) &pidl->str.a[sz];
if(!segment->size)
break;
sz+=segment->size;
if(sz>pidl->size)
{
printf("bad pidl\n");
break;
}
n++;
printf("segment %d (%2d bytes) : ",n,segment->size);
for(i=0; i<segment->size; i++)
printf("%02x ",segment->str.a[i]);
printf("\n");
}
printf("\n");
}
static void dump_string(const char *what, int unicode)
{
const lnk_string *data;
unsigned sz;
data = fetch_string(unicode);
if (!data)
return;
printf("%s : ", what);
sz = data->size;
if (unicode)
while (sz) printf("%c", data->str.w[data->size - sz--]);
else
while (sz) printf("%c", data->str.a[data->size - sz--]);
printf("\n");
}
static void dump_location(void)
{
const LOCATION_INFO *loc;
const char *p;
loc = fetch_block();
if (!loc)
return;
p = (const char*)loc;
printf("Location\n");
printf("--------\n\n");
printf("Total size = %d\n", loc->dwTotalSize);
printf("Header size = %d\n", loc->dwHeaderSize);
printf("Flags = %08x\n", loc->dwFlags);
/* dump information about the local volume the link points to */
printf("Local volume ofs = %08x ", loc->dwVolTableOfs);
if (loc->dwVolTableOfs &&
loc->dwVolTableOfs + sizeof(LOCAL_VOLUME_INFO) < loc->dwTotalSize)
{
const LOCAL_VOLUME_INFO *vol = (const LOCAL_VOLUME_INFO *)&p[loc->dwVolTableOfs];
printf("size %d type %d serial %08x label %d ",
vol->dwSize, vol->dwType, vol->dwVolSerial, vol->dwVolLabelOfs);
if(vol->dwVolLabelOfs)
printf("(\"%s\")", &p[loc->dwVolTableOfs + vol->dwVolLabelOfs]);
}
printf("\n");
/* dump information about the network volume the link points to */
printf("Network volume ofs = %08x ", loc->dwNetworkVolTableOfs);
if (loc->dwNetworkVolTableOfs &&
loc->dwNetworkVolTableOfs + sizeof(NETWORK_VOLUME_INFO) < loc->dwTotalSize)
{
const NETWORK_VOLUME_INFO *vol = (const NETWORK_VOLUME_INFO *)&p[loc->dwNetworkVolTableOfs];
printf("size %d name %d ", vol->dwSize, vol->dwShareNameOfs);
if(vol->dwShareNameOfs)
printf("(\"%s\")", &p[loc->dwNetworkVolTableOfs + vol->dwShareNameOfs]);
}
printf("\n");
/* dump out the path the link points to */
printf("LocalPath ofs = %08x ", loc->dwLocalPathOfs);
if( loc->dwLocalPathOfs && (loc->dwLocalPathOfs < loc->dwTotalSize) )
printf("(\"%s\")", &p[loc->dwLocalPathOfs]);
printf("\n");
printf("Net Path ofs = %08x\n", loc->dwNetworkVolTableOfs);
printf("Final Path = %08x ", loc->dwFinalPathOfs);
if( loc->dwFinalPathOfs && (loc->dwFinalPathOfs < loc->dwTotalSize) )
printf("(\"%s\")", &p[loc->dwFinalPathOfs]);
printf("\n");
printf("\n");
}
static const unsigned char table_dec85[0x80] = {
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0x00,0xff,0xff,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0xff,
0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,0x14,0x15,0xff,0xff,0xff,0x16,0xff,0x17,
0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,0xff,0x34,0x35,0x36,
0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,0x40,0x41,0x42,0x43,0x44,0x45,0x46,
0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,0x50,0x51,0x52,0xff,0x53,0x54,0xff,
};
static BOOL base85_to_guid( const char *str, LPGUID guid )
{
DWORD i, val = 0, base = 1, *p;
unsigned char ch;
p = (DWORD*) guid;
for( i=0; i<20; i++ )
{
if( (i%5) == 0 )
{
val = 0;
base = 1;
}
ch = str[i];
if( ch >= 0x80 )
return FALSE;
val += table_dec85[ch] * base;
if( table_dec85[ch] == 0xff )
return FALSE;
if( (i%5) == 4 )
p[i/5] = val;
base *= 85;
}
return TRUE;
}
static void dump_special_folder_block(const DATABLOCK_HEADER* bhdr)
{
const EXP_SPECIAL_FOLDER *sfb = (const EXP_SPECIAL_FOLDER*)bhdr;
printf("Special folder block\n");
printf("--------------------\n\n");
printf("folder = 0x%04x\n", sfb->idSpecialFolder);
printf("offset = %d\n", sfb->cbOffset);
printf("\n");
}
static void dump_sz_block(const DATABLOCK_HEADER* bhdr, const char* label)
{
const LINK_SZ_BLOCK *szp = (const LINK_SZ_BLOCK*)bhdr;
printf("String block\n");
printf("-----------\n\n");
printf("magic = %x\n", szp->magic);
printf("%s = %s\n", label, szp->bufA);
printf("\n");
}
static void dump_darwin_id(const DATABLOCK_HEADER* bhdr)
{
const LINK_SZ_BLOCK *szp = (const LINK_SZ_BLOCK*)bhdr;
char comp_str[40];
const char *feat, *comp, *prod_str, *feat_str;
GUID guid;
printf("Advertise Info\n");
printf("--------------\n\n");
printf("msi string = %s\n", szp->bufA);
if (base85_to_guid(szp->bufA, &guid))
prod_str = get_guid_str(&guid);
else
prod_str = "?";
comp = &szp->bufA[20];
feat = strchr(comp, '>');
if (!feat)
feat = strchr(comp, '<');
if (feat)
{
memcpy(comp_str, comp, feat - comp);
comp_str[feat-comp] = 0;
}
else
{
strcpy(comp_str, "?");
}
if (feat && feat[0] == '>' && base85_to_guid( &feat[1], &guid ))
feat_str = get_guid_str( &guid );
else
feat_str = "";
printf(" product: %s\n", prod_str);
printf(" component: %s\n", comp_str );
printf(" feature: %s\n", feat_str);
printf("\n");
}
static void dump_property_storage_value(const LINK_PROPERTYSTORAGE_VALUE *lnk_value_hdr,
DWORD data_size)
{
BOOL got_terminator = FALSE;
int i, value_size;
const unsigned char *value;
while (data_size >= sizeof(DWORD))
{
if (!lnk_value_hdr->size)
{
got_terminator = TRUE;
break;
}
if (lnk_value_hdr->size > data_size || lnk_value_hdr->size < sizeof(*lnk_value_hdr))
{
printf(" size: %d (invalid)\n", lnk_value_hdr->size);
return;
}
printf(" pid: %d\n", lnk_value_hdr->pid);
printf(" unknown8: %d\n", lnk_value_hdr->unknown8);
printf(" vartype: %d\n", lnk_value_hdr->vt);
printf(" unknown25: %d\n", lnk_value_hdr->unknown25);
value_size = lnk_value_hdr->size - sizeof(*lnk_value_hdr);
value = (const unsigned char*)(lnk_value_hdr+1);
printf(" value (%2d bytes) : ",value_size);
for(i=0; i<value_size; i++)
printf("%02x ",value[i]);
printf("\n\n");
data_size -= lnk_value_hdr->size;
lnk_value_hdr = (void*)((char*)lnk_value_hdr + lnk_value_hdr->size);
}
if (!got_terminator)
printf(" missing terminator!\n");
}
static void dump_property_storage(const DATABLOCK_HEADER* bhdr)
{
int data_size;
const LINK_PROPERTYSTORAGE_GUID *lnk_guid_hdr;
BOOL got_terminator = FALSE;
printf("Property Storage\n");
printf("--------------\n\n");
data_size=bhdr->cbSize-sizeof(*bhdr);
lnk_guid_hdr=(void*)((const char*)bhdr+sizeof(*bhdr));
while (data_size >= sizeof(DWORD))
{
if (!lnk_guid_hdr->size)
{
got_terminator = TRUE;
break;
}
if (lnk_guid_hdr->size > data_size || lnk_guid_hdr->size < sizeof(*lnk_guid_hdr))
{
printf("size: %d (invalid)\n", lnk_guid_hdr->size);
return;
}
if (lnk_guid_hdr->magic != 0x53505331)
printf("magic: %x\n", lnk_guid_hdr->magic);
printf("fmtid: %s\n", get_guid_str(&lnk_guid_hdr->fmtid));
dump_property_storage_value((void*)(lnk_guid_hdr + 1), lnk_guid_hdr->size - sizeof(*lnk_guid_hdr));
data_size -= lnk_guid_hdr->size;
lnk_guid_hdr = (void*)((char*)lnk_guid_hdr + lnk_guid_hdr->size);
}
if (!got_terminator)
printf("missing terminator!\n");
printf("\n");
}
static void dump_raw_block(const DATABLOCK_HEADER* bhdr)
{
int data_size;
printf("Raw Block\n");
printf("---------\n\n");
printf("size = %d\n", bhdr->cbSize);
printf("magic = %x\n", bhdr->dwSignature);
data_size=bhdr->cbSize-sizeof(*bhdr);
if (data_size > 0)
{
int i;
const unsigned char *data;
printf("data = ");
data=(const unsigned char*)bhdr+sizeof(*bhdr);
while (data_size > 0)
{
for (i=0; i < 16; i++)
{
if (i < data_size)
printf("%02x ", data[i]);
else
printf(" ");
}
for (i=0; i < data_size && i < 16; i++)
printf("%c", (data[i] >= 32 && data[i] < 128 ? data[i] : '.'));
printf("\n");
data_size-=16;
if (data_size <= 0)
break;
data+=16;
printf(" ");
}
}
printf("\n");
}
static const GUID CLSID_ShellLink = {0x00021401L, 0, 0, {0xC0,0,0,0,0,0,0,0x46}};
enum FileSig get_kind_lnk(void)
{
const LINK_HEADER* hdr;
hdr = PRD(0, sizeof(*hdr));
if (hdr && hdr->dwSize == sizeof(LINK_HEADER) &&
!memcmp(&hdr->MagicGuid, &CLSID_ShellLink, sizeof(GUID)))
return SIG_LNK;
return SIG_UNKNOWN;
}
void lnk_dump(void)
{
const LINK_HEADER* hdr;
const DATABLOCK_HEADER* bhdr;
UINT dwFlags;
offset = 0;
hdr = fetch_block();
if (!hdr)
return;
printf("Header\n");
printf("------\n\n");
printf("Size: %04x\n", hdr->dwSize);
printf("GUID: %s\n", get_guid_str(&hdr->MagicGuid));
printf("FileAttr: %08x\n", hdr->dwFileAttr);
printf("FileLength: %08x\n", hdr->dwFileLength);
printf("nIcon: %d\n", hdr->nIcon);
printf("Startup: %d\n", hdr->fStartup);
printf("HotKey: %08x\n", hdr->wHotKey);
printf("Unknown5: %08x\n", hdr->Unknown5);
printf("Unknown6: %08x\n", hdr->Unknown6);
/* dump out all the flags */
printf("Flags: %04x ( ", hdr->dwFlags);
dwFlags=hdr->dwFlags;
#define FLAG(x) do \
{ \
if (dwFlags & SLDF_##x) \
{ \
printf("%s ", #x); \
dwFlags&=~SLDF_##x; \
} \
} while (0)
FLAG(HAS_ID_LIST);
FLAG(HAS_LINK_INFO);
FLAG(HAS_NAME);
FLAG(HAS_RELPATH);
FLAG(HAS_WORKINGDIR);
FLAG(HAS_ARGS);
FLAG(HAS_ICONLOCATION);
FLAG(UNICODE);
FLAG(FORCE_NO_LINKINFO);
FLAG(HAS_EXP_SZ);
FLAG(RUN_IN_SEPARATE);
FLAG(HAS_LOGO3ID);
FLAG(HAS_DARWINID);
FLAG(RUNAS_USER);
FLAG(HAS_EXP_ICON_SZ);
FLAG(NO_PIDL_ALIAS);
FLAG(FORCE_UNCNAME);
FLAG(RUN_WITH_SHIMLAYER);
FLAG(FORCE_NO_LINKTRACK);
FLAG(ENABLE_TARGET_METADATA);
FLAG(DISABLE_KNOWNFOLDER_RELATIVE_TRACKING);
FLAG(RESERVED);
#undef FLAG
if (dwFlags)
printf("+%04x", dwFlags);
printf(")\n");
printf("Length: %04x\n", hdr->dwFileLength);
printf("\n");
if (hdr->dwFlags & SLDF_HAS_ID_LIST)
dump_pidl();
if (hdr->dwFlags & SLDF_HAS_LINK_INFO)
dump_location();
if (hdr->dwFlags & SLDF_HAS_NAME)
dump_string("Description", hdr->dwFlags & SLDF_UNICODE);
if (hdr->dwFlags & SLDF_HAS_RELPATH)
dump_string("Relative path", hdr->dwFlags & SLDF_UNICODE);
if (hdr->dwFlags & SLDF_HAS_WORKINGDIR)
dump_string("Working directory", hdr->dwFlags & SLDF_UNICODE);
if (hdr->dwFlags & SLDF_HAS_ARGS)
dump_string("Arguments", hdr->dwFlags & SLDF_UNICODE);
if (hdr->dwFlags & SLDF_HAS_ICONLOCATION)
dump_string("Icon path", hdr->dwFlags & SLDF_UNICODE);
bhdr=fetch_block();
while (bhdr)
{
if (!bhdr->cbSize)
break;
switch (bhdr->dwSignature)
{
case EXP_SZ_LINK_SIG:
dump_sz_block(bhdr, "exp.link");
break;
case EXP_SPECIAL_FOLDER_SIG:
dump_special_folder_block(bhdr);
break;
case EXP_SZ_ICON_SIG:
dump_sz_block(bhdr, "icon");
break;
case EXP_DARWIN_ID_SIG:
dump_darwin_id(bhdr);
break;
case EXP_PROPERTYSTORAGE_SIG:
dump_property_storage(bhdr);
break;
default:
dump_raw_block(bhdr);
}
bhdr=fetch_block();
}
}
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