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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 "wine/port.h"
#include "winedump.h"
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <fcntl.h>
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "pshpack1.h"
#define SCF_PIDL 1
#define SCF_LOCATION 2
#define SCF_DESCRIPTION 4
#define SCF_RELATIVE 8
#define SCF_WORKDIR 0x10
#define SCF_ARGS 0x20
#define SCF_CUSTOMICON 0x40
#define SCF_UNICODE 0x80
#define SCF_PRODUCT 0x800
#define SCF_COMPONENT 0x1000
typedef struct _LINK_HEADER
{
DWORD dwSize; /* 0x00 size of the header - 0x4c */
GUID MagicGuid; /* 0x04 is CLSID_ShellLink */
DWORD dwFlags; /* 0x14 describes elements following */
DWORD dwFileAttr; /* 0x18 attributes of the target file */
FILETIME Time1; /* 0x1c */
FILETIME Time2; /* 0x24 */
FILETIME Time3; /* 0x2c */
DWORD dwFileLength; /* 0x34 File length */
DWORD nIcon; /* 0x38 icon number */
DWORD fStartup; /* 0x3c startup type */
DWORD wHotKey; /* 0x40 hotkey */
DWORD Unknown5; /* 0x44 */
DWORD Unknown6; /* 0x48 */
} LINK_HEADER, * PLINK_HEADER;
typedef struct tagLINK_ADVERTISEINFO
{
DWORD size;
DWORD magic;
CHAR bufA[MAX_PATH];
WCHAR bufW[MAX_PATH];
} LINK_ADVERTISEINFO;
typedef struct _LOCATION_INFO
{
DWORD dwTotalSize;
DWORD dwHeaderSize;
DWORD dwFlags;
DWORD dwVolTableOfs;
DWORD dwLocalPathOfs;
DWORD dwNetworkVolTableOfs;
DWORD dwFinalPathOfs;
} LOCATION_INFO;
typedef struct _LOCAL_VOLUME_INFO
{
DWORD dwSize;
DWORD dwType;
DWORD dwVolSerial;
DWORD dwVolLabelOfs;
} LOCAL_VOLUME_INFO;
typedef struct lnk_string_tag {
unsigned short size;
union {
unsigned short w[1];
unsigned char a[1];
} str;
} lnk_string;
#include "poppack.h"
static void guid_to_string(LPGUID guid, char *str)
{
sprintf(str, "{%08lx-%04x-%04x-%02X%02X-%02X%02X%02X%02X%02X%02X}",
guid->Data1, guid->Data2, guid->Data3,
guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7]);
}
/* the size is a short integer */
static void* load_pidl(int fd)
{
int r;
unsigned char *data;
unsigned short size = 0;
r = read( fd, &size, sizeof size );
if (r != sizeof size)
return NULL;
if (size<sizeof size)
return NULL;
data = malloc(size + sizeof size);
memcpy(data, &size, sizeof size);
r = read( fd, data + sizeof size, size );
if (r != size)
{
free(data);
return NULL;
}
return (void*)data;
}
/* size is an integer */
static void* load_long_section(int fd)
{
int r, size = 0;
unsigned char *data;
r = read( fd, &size, sizeof size );
if (r != sizeof size)
return NULL;
if (size<sizeof size)
return NULL;
data = malloc(size);
memcpy(data, &size, sizeof size);
r = read( fd, data + sizeof size, size - sizeof size);
if (r != (size - sizeof size))
{
free(data);
return NULL;
}
return (void*)data;
}
/* the size is a character count in a short integer */
static lnk_string* load_string(int fd, int unicode)
{
int r;
lnk_string *data;
unsigned short size = 0, bytesize;
r = read( fd, &size, sizeof size );
if (r != sizeof size)
return NULL;
if ( size == 0 )
return NULL;
bytesize = size;
if (unicode)
bytesize *= sizeof(WCHAR);
data = malloc(sizeof *data + bytesize);
data->size = size;
if (unicode)
data->str.w[size] = 0;
else
data->str.a[size] = 0;
r = read(fd, &data->str, bytesize);
if (r != bytesize)
{
free(data);
return NULL;
}
return data;
}
static int dump_pidl(int fd)
{
lnk_string *pidl;
int i, n = 0, sz = 0;
pidl = load_pidl(fd);
if (!pidl)
return -1;
printf("PIDL\n");
printf("----\n\n");
while(sz<pidl->size)
{
lnk_string *segment = (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");
free(pidl);
return 0;
}
static void print_unicode_string(const unsigned short *str)
{
while(*str)
{
printf("%c", *str);
str++;
}
printf("\n");
}
static int dump_string(int fd, const char *what, int unicode)
{
lnk_string *data;
data = load_string(fd, unicode);
if (!data)
return -1;
printf("%s : ", what);
if (unicode)
print_unicode_string(data->str.w);
else
printf("%s",data->str.a);
printf("\n");
free(data);
return 0;
}
static int dump_location(int fd)
{
LOCATION_INFO *loc;
char *p;
loc = load_long_section(fd);
if (!loc)
return -1;
p = (char*)loc;
printf("Location\n");
printf("--------\n\n");
printf("Total size = %ld\n", loc->dwTotalSize);
printf("Header size = %ld\n", loc->dwHeaderSize);
printf("Flags = %08lx\n", loc->dwFlags);
/* dump out information about the volume the link points to */
printf("Volume ofs = %08lx ", loc->dwVolTableOfs);
if (loc->dwVolTableOfs && (loc->dwVolTableOfs<loc->dwTotalSize))
{
LOCAL_VOLUME_INFO *vol = (LOCAL_VOLUME_INFO *) &p[loc->dwVolTableOfs];
printf("size %ld type %ld serial %08lx label %ld ",
vol->dwSize, vol->dwType, vol->dwVolSerial, vol->dwVolLabelOfs);
if(vol->dwVolLabelOfs)
printf("(\"%s\")", &p[loc->dwVolTableOfs + vol->dwVolLabelOfs]);
}
printf("\n");
/* dump out the path the link points to */
printf("LocalPath ofs = %08lx ", loc->dwLocalPathOfs);
if( loc->dwLocalPathOfs && (loc->dwLocalPathOfs < loc->dwTotalSize) )
printf("(\"%s\")", &p[loc->dwLocalPathOfs]);
printf("\n");
printf("Net Path ofs = %08lx\n", loc->dwNetworkVolTableOfs);
printf("Final Path = %08lx ", loc->dwFinalPathOfs);
if( loc->dwFinalPathOfs && (loc->dwFinalPathOfs < loc->dwTotalSize) )
printf("(\"%s\")", &p[loc->dwFinalPathOfs]);
printf("\n");
printf("\n");
free(loc);
return 0;
}
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 int 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 0;
val += table_dec85[ch] * base;
if( table_dec85[ch] == 0xff )
return 0;
if( (i%5) == 4 )
p[i/5] = val;
base *= 85;
}
return 1;
}
static int dump_advertise_info(int fd, const char *type)
{
LINK_ADVERTISEINFO *avt;
avt = load_long_section(fd);
if (!avt)
return -1;
printf("Advertise Info\n");
printf("--------------\n\n");
printf("magic = %lx\n", avt->magic);
printf("%s = %s\n", type, avt->bufA);
if (avt->magic == 0xa0000006)
{
char prod_str[40], comp_str[40], feat_str[40];
char *feat, *comp;
GUID guid;
if (base85_to_guid(avt->bufA, &guid))
guid_to_string( &guid, prod_str );
else
strcpy( prod_str, "?" );
comp = &avt->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 ))
guid_to_string( &guid, feat_str );
else
feat_str[0] = 0;
printf(" product: %s\n", prod_str);
printf(" component: %s\n", comp_str );
printf(" feature: %s\n", feat_str);
}
printf("\n");
return 0;
}
static int dump_lnk_fd(int fd)
{
LINK_HEADER *hdr;
char guid[40];
hdr = load_long_section( fd );
if (!hdr)
return -1;
guid_to_string(&hdr->MagicGuid, guid);
printf("Header\n");
printf("------\n\n");
printf("Size: %04lx\n", hdr->dwSize);
printf("GUID: %s\n", guid);
printf("FileAttr: %08lx\n", hdr->dwFileAttr);
printf("FileLength: %08lx\n", hdr->dwFileLength);
printf("nIcon: %ld\n", hdr->nIcon);
printf("Startup: %ld\n", hdr->fStartup);
printf("HotKey: %08lx\n", hdr->wHotKey);
printf("Unknown5: %08lx\n", hdr->Unknown5);
printf("Unknown6: %08lx\n", hdr->Unknown6);
/* dump out all the flags */
printf("Flags: %04lx ( ", hdr->dwFlags);
#define FLAG(x) if(hdr->dwFlags & SCF_##x) printf("%s ",#x);
FLAG(PIDL)
FLAG(LOCATION)
FLAG(DESCRIPTION)
FLAG(RELATIVE)
FLAG(WORKDIR)
FLAG(ARGS)
FLAG(CUSTOMICON)
FLAG(UNICODE)
FLAG(PRODUCT)
FLAG(COMPONENT)
#undef FLAG
printf(")\n");
printf("Length: %04lx\n", hdr->dwFileLength);
printf("\n");
if (hdr->dwFlags & SCF_PIDL)
dump_pidl(fd);
if (hdr->dwFlags & SCF_LOCATION)
dump_location(fd);
if (hdr->dwFlags & SCF_DESCRIPTION)
dump_string(fd, "Description", hdr->dwFlags & SCF_UNICODE);
if (hdr->dwFlags & SCF_RELATIVE)
dump_string(fd, "Relative path", hdr->dwFlags & SCF_UNICODE);
if (hdr->dwFlags & SCF_WORKDIR)
dump_string(fd, "Working directory", hdr->dwFlags & SCF_UNICODE);
if (hdr->dwFlags & SCF_ARGS)
dump_string(fd, "Arguments", hdr->dwFlags & SCF_UNICODE);
if (hdr->dwFlags & SCF_CUSTOMICON)
dump_string(fd, "Icon path", hdr->dwFlags & SCF_UNICODE);
if (hdr->dwFlags & SCF_PRODUCT)
dump_advertise_info(fd, "product");
if (hdr->dwFlags & SCF_COMPONENT)
dump_advertise_info(fd, "msi string");
return 0;
}
int dump_lnk(const char *emf)
{
int fd;
fd = open(emf,O_RDONLY);
if (fd<0)
return -1;
dump_lnk_fd(fd);
close(fd);
return 0;
}
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