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Commit e0a5b772 authored by Georgi Kodinov's avatar Georgi Kodinov
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merge 5.1->5.5

parents c6e587c3 2de74a13
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Showing with 59 additions and 23 deletions
sql/spatial.cc
View file @ e0a5b772
/*
Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -377,13 +377,19 @@ const char *Geometry::get_mbr_for_points(MBR *mbr, const char *data,
uint offset) const
{
uint32 points;
size_t points_available;
/* read number of points */
if (no_data(data, 4))
return 0;
points= uint4korr(data);
data+= 4;
if (no_data(data, (SIZEOF_STORED_DOUBLE * 2 + offset) * points))
/* can't use any of the helper functions due to the offset */
points_available=
data <= m_data_end ?
(m_data_end - data) / (POINT_DATA_SIZE + offset) : 0;
if (points_available < points)
return 0;
/* Calculate MBR for points */
......@@ -539,7 +545,7 @@ bool Gis_line_string::get_data_as_wkt(String *txt, const char **end) const
data += 4;
if (n_points < 1 ||
no_data(data, SIZEOF_STORED_DOUBLE * 2 * n_points) ||
not_enough_points(data, n_points) ||
txt->reserve(((MAX_DIGITS_IN_DOUBLE + 1)*2 + 1) * n_points))
return 1;
......@@ -576,7 +582,7 @@ int Gis_line_string::geom_length(double *len) const
return 1;
n_points= uint4korr(data);
data+= 4;
if (n_points < 1 || no_data(data, SIZEOF_STORED_DOUBLE * 2 * n_points))
if (n_points < 1 || not_enough_points(data, n_points))
return 1;
get_point(&prev_x, &prev_y, data);
......@@ -610,8 +616,7 @@ int Gis_line_string::is_closed(int *closed) const
return 0;
}
data+= 4;
if (n_points == 0 ||
no_data(data, SIZEOF_STORED_DOUBLE * 2 * n_points))
if (n_points == 0 || not_enough_points(data, n_points))
return 1;
/* Get first point */
......@@ -780,7 +785,8 @@ bool Gis_polygon::get_data_as_wkt(String *txt, const char **end) const
return 1;
n_points= uint4korr(data);
data+= 4;
if (no_data(data, (SIZEOF_STORED_DOUBLE*2) * n_points) ||
if (not_enough_points(data, n_points) ||
txt->reserve(2 + ((MAX_DIGITS_IN_DOUBLE + 1) * 2 + 1) * n_points))
return 1;
txt->qs_append('(');
......@@ -834,7 +840,7 @@ int Gis_polygon::area(double *ar, const char **end_of_data) const
if (no_data(data, 4))
return 1;
n_points= uint4korr(data);
if (no_data(data, (SIZEOF_STORED_DOUBLE*2) * n_points))
if (not_enough_points(data, n_points))
return 1;
get_point(&prev_x, &prev_y, data+4);
data+= (4+SIZEOF_STORED_DOUBLE*2);
......@@ -870,7 +876,7 @@ int Gis_polygon::exterior_ring(String *result) const
n_points= uint4korr(data);
data+= 4;
length= n_points * POINT_DATA_SIZE;
if (no_data(data, length) || result->reserve(1+4+4+ length))
if (not_enough_points(data, n_points) || result->reserve(1+4+4+ length))
return 1;
result->q_append((char) wkb_ndr);
......@@ -916,7 +922,7 @@ int Gis_polygon::interior_ring_n(uint32 num, String *result) const
n_points= uint4korr(data);
points_size= n_points * POINT_DATA_SIZE;
data+= 4;
if (no_data(data, points_size) || result->reserve(1+4+4+ points_size))
if (not_enough_points(data, n_points) || result->reserve(1+4+4+ points_size))
return 1;
result->q_append((char) wkb_ndr);
......@@ -955,7 +961,7 @@ int Gis_polygon::centroid_xy(double *x, double *y) const
return 1;
org_n_points= n_points= uint4korr(data);
data+= 4;
if (no_data(data, (SIZEOF_STORED_DOUBLE*2) * n_points))
if (not_enough_points(data, n_points))
return 1;
get_point(&prev_x, &prev_y, data);
data+= (SIZEOF_STORED_DOUBLE*2);
......@@ -1080,15 +1086,22 @@ uint Gis_multi_point::init_from_wkb(const char *wkb, uint len, wkbByteOrder bo,
bool Gis_multi_point::get_data_as_wkt(String *txt, const char **end) const
{
uint32 n_points;
if (no_data(m_data, 4))
size_t points_available;
const char *data= m_data;
if (no_data(data, 4))
return 1;
n_points= uint4korr(m_data);
if (no_data(m_data+4,
n_points * (SIZEOF_STORED_DOUBLE * 2 + WKB_HEADER_SIZE)) ||
n_points= uint4korr(data);
data+= 4;
points_available= data <= m_data_end ?
(m_data_end - data) / (POINT_DATA_SIZE + WKB_HEADER_SIZE) : 0;
/* can't use any of the helper functions due to WKB_HEADER_SIZE */
if (n_points > points_available ||
txt->reserve(((MAX_DIGITS_IN_DOUBLE + 1) * 2 + 1) * n_points))
return 1;
*end= append_points(txt, n_points, m_data+4, WKB_HEADER_SIZE);
*end= append_points(txt, n_points, data, WKB_HEADER_SIZE);
txt->length(txt->length()-1); // Remove end ','
return 0;
}
......@@ -1242,7 +1255,7 @@ bool Gis_multi_line_string::get_data_as_wkt(String *txt,
return 1;
n_points= uint4korr(data + WKB_HEADER_SIZE);
data+= WKB_HEADER_SIZE + 4;
if (no_data(data, n_points * (SIZEOF_STORED_DOUBLE*2)) ||
if (not_enough_points(data, n_points) ||
txt->reserve(2 + ((MAX_DIGITS_IN_DOUBLE + 1) * 2 + 1) * n_points))
return 1;
txt->qs_append('(');
......@@ -1302,8 +1315,8 @@ int Gis_multi_line_string::geometry_n(uint32 num, String *result) const
if (no_data(data, WKB_HEADER_SIZE + 4))
return 1;
n_points= uint4korr(data + WKB_HEADER_SIZE);
length= WKB_HEADER_SIZE + 4+ POINT_DATA_SIZE * n_points;
if (no_data(data, length))
length= WKB_HEADER_SIZE + 4 + POINT_DATA_SIZE * n_points;
if (not_enough_points(data + WKB_HEADER_SIZE + 4, n_points))
return 1;
if (!--num)
break;
......@@ -1503,7 +1516,7 @@ bool Gis_multi_polygon::get_data_as_wkt(String *txt, const char **end) const
return 1;
uint32 n_points= uint4korr(data);
data+= 4;
if (no_data(data, (SIZEOF_STORED_DOUBLE * 2) * n_points) ||
if (not_enough_points(data, n_points) ||
txt->reserve(2 + ((MAX_DIGITS_IN_DOUBLE + 1) * 2 + 1) * n_points,
512))
return 1;
......
sql/spatial.h
View file @ e0a5b772
/* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
/* Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -25,7 +25,7 @@ class Gis_read_stream;
const uint SRID_SIZE= 4;
const uint SIZEOF_STORED_DOUBLE= 8;
const uint POINT_DATA_SIZE= SIZEOF_STORED_DOUBLE*2;
const uint POINT_DATA_SIZE= (SIZEOF_STORED_DOUBLE * 2);
const uint WKB_HEADER_SIZE= 1+4;
const uint32 GET_SIZE_ERROR= ((uint32) -1);
......@@ -321,10 +321,33 @@ class Geometry
const char *get_mbr_for_points(MBR *mbr, const char *data, uint offset)
const;
inline bool no_data(const char *cur_data, uint32 data_amount) const
/**
Check if there're enough data remaining as requested
@arg cur_data pointer to the position in the binary form
@arg data_amount number of points expected
@return true if not enough data
*/
inline bool no_data(const char *cur_data, size_t data_amount) const
{
return (cur_data + data_amount > m_data_end);
}
/**
Check if there're enough points remaining as requested
Need to perform the calculation in logical units, since multiplication
can overflow the size data type.
@arg data pointer to the begining of the points array
@arg expected_points number of points expected
@return true if there are not enough points
*/
inline bool not_enough_points(const char *data, uint32 expected_points) const
{
return (m_data_end < data ||
(expected_points > ((m_data_end - data) / POINT_DATA_SIZE)));
}
const char *m_data;
const char *m_data_end;
};
......
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