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wine/dlls/msi/cond.y
Troy Rollo 7ade261c35 Fix parsing of string literals.
2004-07-29 02:36:06 +00:00

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%{
/*
* Implementation of the Microsoft Installer (msi.dll)
*
* Copyright 2003 Mike McCormack for CodeWeavers
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "msi.h"
#include "msiquery.h"
#include "msipriv.h"
#define YYLEX_PARAM info
#define YYPARSE_PARAM info
static int COND_error(char *str);
WINE_DEFAULT_DEBUG_CHANNEL(msi);
typedef struct tag_yyinput
{
MSIPACKAGE *package;
LPCWSTR str;
INT n;
MSICONDITION result;
} COND_input;
struct cond_str {
LPCWSTR data;
INT len;
};
static LPWSTR COND_GetString( struct cond_str *str );
static LPWSTR COND_GetLiteral( struct cond_str *str );
static int COND_lex( void *COND_lval, COND_input *info);
typedef INT (*comp_int)(INT a, INT b);
typedef INT (*comp_str)(LPWSTR a, LPWSTR b, BOOL caseless);
typedef INT (*comp_m1)(LPWSTR a,int b);
typedef INT (*comp_m2)(int a,LPWSTR b);
static INT comp_lt_i(INT a, INT b);
static INT comp_gt_i(INT a, INT b);
static INT comp_le_i(INT a, INT b);
static INT comp_ge_i(INT a, INT b);
static INT comp_eq_i(INT a, INT b);
static INT comp_ne_i(INT a, INT b);
static INT comp_bitand(INT a, INT b);
static INT comp_highcomp(INT a, INT b);
static INT comp_lowcomp(INT a, INT b);
static INT comp_eq_s(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_ne_s(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_lt_s(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_gt_s(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_le_s(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_ge_s(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_substring(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_start(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_end(LPWSTR a, LPWSTR b, BOOL casless);
static INT comp_eq_m1(LPWSTR a, INT b);
static INT comp_ne_m1(LPWSTR a, INT b);
static INT comp_lt_m1(LPWSTR a, INT b);
static INT comp_gt_m1(LPWSTR a, INT b);
static INT comp_le_m1(LPWSTR a, INT b);
static INT comp_ge_m1(LPWSTR a, INT b);
static INT comp_eq_m2(INT a, LPWSTR b);
static INT comp_ne_m2(INT a, LPWSTR b);
static INT comp_lt_m2(INT a, LPWSTR b);
static INT comp_gt_m2(INT a, LPWSTR b);
static INT comp_le_m2(INT a, LPWSTR b);
static INT comp_ge_m2(INT a, LPWSTR b);
%}
%pure-parser
%union
{
struct cond_str str;
LPWSTR string;
INT value;
comp_int fn_comp_int;
comp_str fn_comp_str;
comp_m1 fn_comp_m1;
comp_m2 fn_comp_m2;
}
%token COND_SPACE COND_EOF COND_SPACE
%token COND_OR COND_AND COND_NOT
%token COND_LT COND_GT COND_EQ
%token COND_LPAR COND_RPAR COND_TILDA
%token COND_PERCENT COND_DOLLARS COND_QUESTION COND_AMPER COND_EXCLAM
%token <str> COND_IDENT <str> COND_NUMBER <str> COND_LITER
%nonassoc COND_EOF COND_ERROR
%type <value> expression boolean_term boolean_factor
%type <value> term value_i symbol_i integer
%type <string> identifier value_s symbol_s literal
%type <fn_comp_int> comp_op_i
%type <fn_comp_str> comp_op_s
%type <fn_comp_m1> comp_op_m1
%type <fn_comp_m2> comp_op_m2
%%
condition:
expression
{
COND_input* cond = (COND_input*) info;
cond->result = $1;
}
;
expression:
boolean_term
{
$$ = $1;
}
| boolean_term COND_OR expression
{
$$ = $1 || $3;
}
;
boolean_term:
boolean_factor
{
$$ = $1;
}
| boolean_term COND_AND boolean_factor
{
$$ = $1 && $3;
}
;
boolean_factor:
term
{
$$ = $1;
}
| COND_NOT term
{
$$ = ! $2;
}
;
term:
value_i
{
$$ = $1;
}
| value_s
{
$$ = atoiW($1);
}
| value_i comp_op_i value_i
{
$$ = $2( $1, $3 );
}
| value_s comp_op_s value_s
{
$$ = $2( $1, $3, FALSE );
}
| value_s COND_TILDA comp_op_s value_s
{
$$ = $3( $1, $4, TRUE );
}
| value_s comp_op_m1 value_i
{
$$ = $2( $1, $3 );
}
| value_i comp_op_m2 value_s
{
$$ = $2( $1, $3 );
}
| COND_LPAR expression COND_RPAR
{
$$ = $2;
}
;
comp_op_i:
/* common functions */
COND_EQ
{
$$ = comp_eq_i;
}
| COND_LT COND_GT
{
$$ = comp_ne_i;
}
| COND_LT
{
$$ = comp_lt_i;
}
| COND_GT
{
$$ = comp_gt_i;
}
| COND_LT COND_EQ
{
$$ = comp_le_i;
}
| COND_GT COND_EQ
{
$$ = comp_ge_i;
}
/*Int only*/
| COND_GT COND_LT
{
$$ = comp_bitand;
}
| COND_LT COND_LT
{
$$ = comp_highcomp;
}
| COND_GT COND_GT
{
$$ = comp_lowcomp;
}
;
comp_op_s:
/* common functions */
COND_EQ
{
$$ = comp_eq_s;
}
| COND_LT COND_GT
{
$$ = comp_ne_s;
}
| COND_LT
{
$$ = comp_lt_s;
}
| COND_GT
{
$$ = comp_gt_s;
}
| COND_LT COND_EQ
{
$$ = comp_le_s;
}
| COND_GT COND_EQ
{
$$ = comp_ge_s;
}
/*string only*/
| COND_GT COND_LT
{
$$ = comp_substring;
}
| COND_LT COND_LT
{
$$ = comp_start;
}
| COND_GT COND_GT
{
$$ = comp_end;
}
;
comp_op_m1:
/* common functions */
COND_EQ
{
$$ = comp_eq_m1;
}
| COND_LT COND_GT
{
$$ = comp_ne_m1;
}
| COND_LT
{
$$ = comp_lt_m1;
}
| COND_GT
{
$$ = comp_gt_m1;
}
| COND_LT COND_EQ
{
$$ = comp_le_m1;
}
| COND_GT COND_EQ
{
$$ = comp_ge_m1;
}
/*Not valid for mixed compares*/
| COND_GT COND_LT
{
$$ = 0;
}
| COND_LT COND_LT
{
$$ = 0;
}
| COND_GT COND_GT
{
$$ = 0;
}
;
comp_op_m2:
/* common functions */
COND_EQ
{
$$ = comp_eq_m2;
}
| COND_LT COND_GT
{
$$ = comp_ne_m2;
}
| COND_LT
{
$$ = comp_lt_m2;
}
| COND_GT
{
$$ = comp_gt_m2;
}
| COND_LT COND_EQ
{
$$ = comp_le_m2;
}
| COND_GT COND_EQ
{
$$ = comp_ge_m2;
}
/*Not valid for mixed compares*/
| COND_GT COND_LT
{
$$ = 0;
}
| COND_LT COND_LT
{
$$ = 0;
}
| COND_GT COND_GT
{
$$ = 0;
}
;
value_i:
symbol_i
{
$$ = $1;
}
| integer
{
$$ = $1;
}
;
value_s:
symbol_s
{
$$ = $1;
}
| literal
{
$$ = $1;
}
;
literal:
COND_LITER
{
$$ = COND_GetLiteral(&$1);
if( !$$ )
YYABORT;
}
;
symbol_i:
COND_DOLLARS identifier
{
COND_input* cond = (COND_input*) info;
INSTALLSTATE install = INSTALLSTATE_UNKNOWN, action = INSTALLSTATE_UNKNOWN;
MSI_GetComponentStateW(cond->package, $2, &install, &action );
$$ = action;
HeapFree( GetProcessHeap(), 0, $2 );
}
| COND_QUESTION identifier
{
COND_input* cond = (COND_input*) info;
INSTALLSTATE install = INSTALLSTATE_UNKNOWN, action = INSTALLSTATE_UNKNOWN;
MSI_GetComponentStateW(cond->package, $2, &install, &action );
$$ = install;
HeapFree( GetProcessHeap(), 0, $2 );
}
| COND_AMPER identifier
{
COND_input* cond = (COND_input*) info;
INSTALLSTATE install = INSTALLSTATE_UNKNOWN, action = INSTALLSTATE_UNKNOWN;
MSI_GetFeatureStateW(cond->package, $2, &install, &action );
$$ = action;
HeapFree( GetProcessHeap(), 0, $2 );
}
| COND_EXCLAM identifier
{
COND_input* cond = (COND_input*) info;
INSTALLSTATE install = INSTALLSTATE_UNKNOWN, action = INSTALLSTATE_UNKNOWN;
MSI_GetFeatureStateW(cond->package, $2, &install, &action );
$$ = install;
HeapFree( GetProcessHeap(), 0, $2 );
}
;
symbol_s:
identifier
{
DWORD sz;
COND_input* cond = (COND_input*) info;
$$ = HeapAlloc( GetProcessHeap(), 0, 0x100*sizeof (WCHAR) );
/* Lookup the identifier */
sz=0x100;
if (MSI_GetPropertyW(cond->package,$1,$$,&sz) != ERROR_SUCCESS)
{
$$[0]=0;
}
HeapFree( GetProcessHeap(), 0, $1 );
}
| COND_PERCENT identifier
{
UINT len = GetEnvironmentVariableW( $2, NULL, 0 );
if( len++ )
{
$$ = HeapAlloc( GetProcessHeap(), 0, len*sizeof (WCHAR) );
if( $$ )
GetEnvironmentVariableW( $2, $$, len );
}
HeapFree( GetProcessHeap(), 0, $2 );
}
;
identifier:
COND_IDENT
{
$$ = COND_GetString(&$1);
if( !$$ )
YYABORT;
}
;
integer:
COND_NUMBER
{
LPWSTR szNum = COND_GetString(&$1);
if( !szNum )
YYABORT;
$$ = atoiW( szNum );
HeapFree( GetProcessHeap(), 0, szNum );
}
;
%%
static int COND_IsAlpha( WCHAR x )
{
return( ( ( x >= 'A' ) && ( x <= 'Z' ) ) ||
( ( x >= 'a' ) && ( x <= 'z' ) ) ||
( ( x == '_' ) ) );
}
static int COND_IsNumber( WCHAR x )
{
return( (( x >= '0' ) && ( x <= '9' )) || (x =='-') || (x =='.') );
}
/* the mess of comparison functions */
static INT comp_lt_i(INT a, INT b)
{ return (a < b); }
static INT comp_gt_i(INT a, INT b)
{ return (a > b); }
static INT comp_le_i(INT a, INT b)
{ return (a <= b); }
static INT comp_ge_i(INT a, INT b)
{ return (a >= b); }
static INT comp_eq_i(INT a, INT b)
{ return (a == b); }
static INT comp_ne_i(INT a, INT b)
{ return (a != b); }
static INT comp_bitand(INT a, INT b)
{ return a & b;}
static INT comp_highcomp(INT a, INT b)
{ return HIWORD(a)==b; }
static INT comp_lowcomp(INT a, INT b)
{ return LOWORD(a)==b; }
static INT comp_eq_s(LPWSTR a, LPWSTR b, BOOL casless)
{ if (casless) return !strcmpiW(a,b); else return !strcmpW(a,b);}
static INT comp_ne_s(LPWSTR a, LPWSTR b, BOOL casless)
{ if (casless) return strcmpiW(a,b); else return strcmpW(a,b);}
static INT comp_lt_s(LPWSTR a, LPWSTR b, BOOL casless)
{ if (casless) return strcmpiW(a,b)<0; else return strcmpW(a,b)<0;}
static INT comp_gt_s(LPWSTR a, LPWSTR b, BOOL casless)
{ if (casless) return strcmpiW(a,b)>0; else return strcmpW(a,b)>0;}
static INT comp_le_s(LPWSTR a, LPWSTR b, BOOL casless)
{ if (casless) return strcmpiW(a,b)<=0; else return strcmpW(a,b)<=0;}
static INT comp_ge_s(LPWSTR a, LPWSTR b, BOOL casless)
{ if (casless) return strcmpiW(a,b)>=0; else return strcmpW(a,b)>=0;}
static INT comp_substring(LPWSTR a, LPWSTR b, BOOL casless)
/* ERROR NOT WORKING REWRITE */
{ if (casless) return strstrW(a,b)!=NULL; else return strstrW(a,b)!=NULL;}
static INT comp_start(LPWSTR a, LPWSTR b, BOOL casless)
{ if (casless) return strncmpiW(a,b,strlenW(b))==0;
else return strncmpW(a,b,strlenW(b))==0;}
static INT comp_end(LPWSTR a, LPWSTR b, BOOL casless)
{
int i = strlenW(a);
int j = strlenW(b);
if (j>i)
return 0;
if (casless) return (!strcmpiW(&a[i-j-1],b));
else return (!strcmpW(&a[i-j-1],b));
}
static INT comp_eq_m1(LPWSTR a, INT b)
{ if (COND_IsNumber(a[0])) return atoiW(a)==b; else return 0;}
static INT comp_ne_m1(LPWSTR a, INT b)
{ if (COND_IsNumber(a[0])) return atoiW(a)!=b; else return 1;}
static INT comp_lt_m1(LPWSTR a, INT b)
{ if (COND_IsNumber(a[0])) return atoiW(a)<b; else return 0;}
static INT comp_gt_m1(LPWSTR a, INT b)
{ if (COND_IsNumber(a[0])) return atoiW(a)>b; else return 0;}
static INT comp_le_m1(LPWSTR a, INT b)
{ if (COND_IsNumber(a[0])) return atoiW(a)<=b; else return 0;}
static INT comp_ge_m1(LPWSTR a, INT b)
{ if (COND_IsNumber(a[0])) return atoiW(a)>=b; else return 0;}
static INT comp_eq_m2(INT a, LPWSTR b)
{ if (COND_IsNumber(b[0])) return a == atoiW(b); else return 0;}
static INT comp_ne_m2(INT a, LPWSTR b)
{ if (COND_IsNumber(b[0])) return a != atoiW(b); else return 1;}
static INT comp_lt_m2(INT a, LPWSTR b)
{ if (COND_IsNumber(b[0])) return a < atoiW(b); else return 0;}
static INT comp_gt_m2(INT a, LPWSTR b)
{ if (COND_IsNumber(b[0])) return a > atoiW(b); else return 0;}
static INT comp_le_m2(INT a, LPWSTR b)
{ if (COND_IsNumber(b[0])) return a <= atoiW(b); else return 0;}
static INT comp_ge_m2(INT a, LPWSTR b)
{ if (COND_IsNumber(b[0])) return a >= atoiW(b); else return 0;}
static int COND_IsIdent( WCHAR x )
{
return( COND_IsAlpha( x ) || COND_IsNumber( x ) || ( x == '_' )
|| ( x == '#' ) || (x == '.') );
}
static int COND_GetOne( struct cond_str *str, COND_input *cond )
{
static const WCHAR szNot[] = {'N','O','T',0};
static const WCHAR szAnd[] = {'A','N','D',0};
static const WCHAR szOr[] = {'O','R',0};
WCHAR ch;
int rc, len = 1;
str->data = &cond->str[cond->n];
ch = str->data[0];
switch( ch )
{
case 0: return 0;
case '(': rc = COND_LPAR; break;
case ')': rc = COND_RPAR; break;
case '&': rc = COND_AMPER; break;
case '!': rc = COND_EXCLAM; break;
case '$': rc = COND_DOLLARS; break;
case '?': rc = COND_QUESTION; break;
case '%': rc = COND_PERCENT; break;
case ' ': rc = COND_SPACE; break;
case '=': rc = COND_EQ; break;
case '~': rc = COND_TILDA; break;
case '<': rc = COND_LT; break;
case '>': rc = COND_GT; break;
case '"':
{
const WCHAR *ch2 = str->data + 1;
while ( *ch2 && *ch2 != '"' )
++ch2;
if (*ch2 == '"')
{
len = ch2 - str->data + 1;
rc = COND_LITER;
break;
}
}
ERR("Unterminated string\n");
rc = COND_ERROR;
break;
default:
if( COND_IsAlpha( ch ) )
{
while( COND_IsIdent( str->data[len] ) )
len++;
rc = COND_IDENT;
break;
}
if( COND_IsNumber( ch ) )
{
while( COND_IsNumber( str->data[len] ) )
len++;
rc = COND_NUMBER;
break;
}
ERR("Got unknown character %c(%x)\n",ch,ch);
rc = COND_ERROR;
break;
}
/* keyword identifiers */
if( rc == COND_IDENT )
{
if( (len==3) && (strncmpiW(str->data,szNot,len)==0) )
rc = COND_NOT;
else if( (len==3) && (strncmpiW(str->data,szAnd,len)==0) )
rc = COND_AND;
else if( (len==2) && (strncmpiW(str->data,szOr,len)==0) )
rc = COND_OR;
}
cond->n += len;
str->len = len;
return rc;
}
static int COND_lex( void *COND_lval, COND_input *cond )
{
int rc;
struct cond_str *str = COND_lval;
do {
rc = COND_GetOne( str, cond );
} while (rc == COND_SPACE);
return rc;
}
static LPWSTR COND_GetString( struct cond_str *str )
{
LPWSTR ret;
ret = HeapAlloc( GetProcessHeap(), 0, (str->len+1) * sizeof (WCHAR) );
if( ret )
{
strncpyW( ret, str->data, str->len );
ret[str->len]=0;
}
TRACE("Got identifier %s\n",debugstr_w(ret));
return ret;
}
static LPWSTR COND_GetLiteral( struct cond_str *str )
{
LPWSTR ret;
ret = HeapAlloc( GetProcessHeap(), 0, (str->len-1) * sizeof (WCHAR) );
if( ret )
{
memcpy( ret, str->data+1, (str->len-2) * sizeof(WCHAR) );
ret[str->len - 2]=0;
}
TRACE("Got literal %s\n",debugstr_w(ret));
return ret;
}
static int COND_error(char *str)
{
return 0;
}
MSICONDITION MSI_EvaluateConditionW( MSIPACKAGE *package, LPCWSTR szCondition )
{
COND_input cond;
MSICONDITION r;
cond.package = package;
cond.str = szCondition;
cond.n = 0;
cond.result = -1;
TRACE("Evaluating %s\n",debugstr_w(szCondition));
if( !COND_parse( &cond ) )
r = cond.result;
else
r = MSICONDITION_ERROR;
TRACE("Evaluates to %i\n",r);
return r;
}
MSICONDITION WINAPI MsiEvaluateConditionW( MSIHANDLE hInstall, LPCWSTR szCondition )
{
MSIPACKAGE *package;
UINT ret;
package = msihandle2msiinfo( hInstall, MSIHANDLETYPE_PACKAGE);
if( !package)
return ERROR_INVALID_HANDLE;
ret = MSI_EvaluateConditionW( package, szCondition );
msiobj_release( &package->hdr );
return ret;
}
MSICONDITION WINAPI MsiEvaluateConditionA( MSIHANDLE hInstall, LPCSTR szCondition )
{
LPWSTR szwCond = NULL;
MSICONDITION r;
if( szCondition )
{
UINT len = MultiByteToWideChar( CP_ACP, 0, szCondition, -1, NULL, 0 );
szwCond = HeapAlloc( GetProcessHeap(), 0, len * sizeof (WCHAR) );
MultiByteToWideChar( CP_ACP, 0, szCondition, -1, szwCond, len );
}
r = MsiEvaluateConditionW( hInstall, szwCond );
if( szwCond )
HeapFree( GetProcessHeap(), 0, szwCond );
return r;
}
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