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7a362a176a
Several functions, mostly type input functions, calculated an allocation size such that the calculation wrapped to a small positive value when arguments implied a sufficiently-large requirement. Writes past the end of the inadvertent small allocation followed shortly thereafter. Coverity identified the path_in() vulnerability; code inspection led to the rest. In passing, add check_stack_depth() to prevent stack overflow in related functions. Back-patch to 8.4 (all supported versions). The non-comment hstore changes touch code that did not exist in 8.4, so that part stops at 9.0. Noah Misch and Heikki Linnakangas, reviewed by Tom Lane. Security: CVE-2014-0064
177 lines
5.1 KiB
C
177 lines
5.1 KiB
C
/*
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* contrib/intarray/_int.h
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*/
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#ifndef ___INT_H__
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#define ___INT_H__
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#include "utils/array.h"
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#include "utils/memutils.h"
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/* number ranges for compression */
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#define MAXNUMRANGE 100
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/* useful macros for accessing int4 arrays */
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#define ARRPTR(x) ( (int32 *) ARR_DATA_PTR(x) )
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#define ARRNELEMS(x) ArrayGetNItems(ARR_NDIM(x), ARR_DIMS(x))
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/* reject arrays we can't handle; to wit, those containing nulls */
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#define CHECKARRVALID(x) \
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do { \
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if (ARR_HASNULL(x) && array_contains_nulls(x)) \
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ereport(ERROR, \
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(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), \
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errmsg("array must not contain nulls"))); \
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} while(0)
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#define ARRISEMPTY(x) (ARRNELEMS(x) == 0)
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/* sort the elements of the array */
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#define SORT(x) \
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do { \
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int _nelems_ = ARRNELEMS(x); \
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if (_nelems_ > 1) \
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isort(ARRPTR(x), _nelems_); \
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} while(0)
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/* sort the elements of the array and remove duplicates */
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#define PREPAREARR(x) \
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do { \
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int _nelems_ = ARRNELEMS(x); \
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if (_nelems_ > 1) \
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if (isort(ARRPTR(x), _nelems_)) \
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(x) = _int_unique(x); \
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} while(0)
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/* "wish" function */
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#define WISH_F(a,b,c) (double)( -(double)(((a)-(b))*((a)-(b))*((a)-(b)))*(c) )
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/* bigint defines */
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#define SIGLENINT 63 /* >122 => key will toast, so very slow!!! */
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#define SIGLEN ( sizeof(int)*SIGLENINT )
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#define SIGLENBIT (SIGLEN*BITS_PER_BYTE)
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typedef char BITVEC[SIGLEN];
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typedef char *BITVECP;
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#define LOOPBYTE \
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for(i=0;i<SIGLEN;i++)
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/* beware of multiple evaluation of arguments to these macros! */
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#define GETBYTE(x,i) ( *( (BITVECP)(x) + (int)( (i) / BITS_PER_BYTE ) ) )
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#define GETBITBYTE(x,i) ( (*((char*)(x)) >> (i)) & 0x01 )
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#define CLRBIT(x,i) GETBYTE(x,i) &= ~( 0x01 << ( (i) % BITS_PER_BYTE ) )
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#define SETBIT(x,i) GETBYTE(x,i) |= ( 0x01 << ( (i) % BITS_PER_BYTE ) )
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#define GETBIT(x,i) ( (GETBYTE(x,i) >> ( (i) % BITS_PER_BYTE )) & 0x01 )
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#define HASHVAL(val) (((unsigned int)(val)) % SIGLENBIT)
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#define HASH(sign, val) SETBIT((sign), HASHVAL(val))
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/*
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* type of index key
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*/
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typedef struct
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{
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int32 vl_len_; /* varlena header (do not touch directly!) */
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int32 flag;
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char data[1];
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} GISTTYPE;
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#define ALLISTRUE 0x04
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#define ISALLTRUE(x) ( ((GISTTYPE*)x)->flag & ALLISTRUE )
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#define GTHDRSIZE (VARHDRSZ + sizeof(int32))
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#define CALCGTSIZE(flag) ( GTHDRSIZE+(((flag) & ALLISTRUE) ? 0 : SIGLEN) )
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#define GETSIGN(x) ( (BITVECP)( (char*)x+GTHDRSIZE ) )
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/*
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* types for functions
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*/
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typedef ArrayType *(*formarray) (ArrayType *, ArrayType *);
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typedef void (*formfloat) (ArrayType *, float *);
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/*
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* useful functions
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*/
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bool isort(int32 *a, int len);
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ArrayType *new_intArrayType(int num);
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ArrayType *copy_intArrayType(ArrayType *a);
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ArrayType *resize_intArrayType(ArrayType *a, int num);
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int internal_size(int *a, int len);
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ArrayType *_int_unique(ArrayType *a);
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int32 intarray_match_first(ArrayType *a, int32 elem);
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ArrayType *intarray_add_elem(ArrayType *a, int32 elem);
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ArrayType *intarray_concat_arrays(ArrayType *a, ArrayType *b);
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ArrayType *int_to_intset(int32 elem);
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bool inner_int_overlap(ArrayType *a, ArrayType *b);
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bool inner_int_contains(ArrayType *a, ArrayType *b);
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ArrayType *inner_int_union(ArrayType *a, ArrayType *b);
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ArrayType *inner_int_inter(ArrayType *a, ArrayType *b);
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void rt__int_size(ArrayType *a, float *size);
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void gensign(BITVEC sign, int *a, int len);
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/*****************************************************************************
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* Boolean Search
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*****************************************************************************/
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#define BooleanSearchStrategy 20
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/*
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* item in polish notation with back link
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* to left operand
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*/
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typedef struct ITEM
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{
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int16 type;
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int16 left;
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int32 val;
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} ITEM;
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typedef struct QUERYTYPE
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{
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int32 vl_len_; /* varlena header (do not touch directly!) */
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int32 size; /* number of ITEMs */
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ITEM items[1]; /* variable length array */
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} QUERYTYPE;
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#define HDRSIZEQT offsetof(QUERYTYPE, items)
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#define COMPUTESIZE(size) ( HDRSIZEQT + (size) * sizeof(ITEM) )
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#define QUERYTYPEMAXITEMS ((MaxAllocSize - HDRSIZEQT) / sizeof(ITEM))
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#define GETQUERY(x) ( (x)->items )
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/* "type" codes for ITEM */
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#define END 0
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#define ERR 1
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#define VAL 2
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#define OPR 3
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#define OPEN 4
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#define CLOSE 5
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/* fmgr macros for QUERYTYPE objects */
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#define DatumGetQueryTypeP(X) ((QUERYTYPE *) PG_DETOAST_DATUM(X))
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#define DatumGetQueryTypePCopy(X) ((QUERYTYPE *) PG_DETOAST_DATUM_COPY(X))
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#define PG_GETARG_QUERYTYPE_P(n) DatumGetQueryTypeP(PG_GETARG_DATUM(n))
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#define PG_GETARG_QUERYTYPE_P_COPY(n) DatumGetQueryTypePCopy(PG_GETARG_DATUM(n))
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bool signconsistent(QUERYTYPE *query, BITVEC sign, bool calcnot);
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bool execconsistent(QUERYTYPE *query, ArrayType *array, bool calcnot);
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bool gin_bool_consistent(QUERYTYPE *query, bool *check);
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bool query_has_required_values(QUERYTYPE *query);
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int compASC(const void *a, const void *b);
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int compDESC(const void *a, const void *b);
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/* sort, either ascending or descending */
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#define QSORT(a, direction) \
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do { \
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int _nelems_ = ARRNELEMS(a); \
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if (_nelems_ > 1) \
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qsort((void*) ARRPTR(a), _nelems_, sizeof(int32), \
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(direction) ? compASC : compDESC ); \
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} while(0)
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#endif /* ___INT_H__ */
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