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This commit is contained in:
Werner Lemberg
parent
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30
ChangeLog
30
ChangeLog
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@ -1,23 +1,25 @@
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2002-01-05 David Turner <david@freetype.org>
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* src/autohint/ahhint.c: modified computation of auto-hinted stem
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widths, this avoids color fringes in "ClearType-like" rendering
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* src/truetype/ttgload.c: modified the TrueType loader to make it
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more paranoid, this avoids nasty buffer overflows in the case of
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invalid glyph data (as encountered in the output of some buggy
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font converters..)
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* src/autohint/ahhint.c (ah_align_linked_edge): Modified computation
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of auto-hinted stem widths; this avoids color fringes in
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"ClearType-like" rendering.
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* src/truetype/ttgload.c (TT_Load_Glyph_Header,
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TT_Load_Simple_Glyph, TT_Load_Composite_Glyph, load_truetype_glyph):
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Modified the TrueType loader to make it more paranoid; this avoids
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nasty buffer overflows in the case of invalid glyph data (as
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encountered in the output of some buggy font converters).
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2002-01-04 David Turner <david@freetype.org>
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* README.UNX: added special README file for Unix users
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* README.UNX: Added special README file for Unix users.
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* builds/unix/ftsystem.c (FT_New_Stream): fixed typo
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* src/base/ftobjs.c: added #include FT_OUTLINE_H to get rid
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of compiler warnings
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* src/base/ftoutln.c (FT_Outline_Check): remove compiler warning
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* builds/unix/ftsystem.c (FT_New_Stream): Fixed typo.
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* src/base/ftobjs.c: Added #include FT_OUTLINE_H to get rid
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of compiler warnings.
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* src/base/ftoutln.c (FT_Outline_Check): Remove compiler warning.
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2002-01-03 Werner Lemberg <wl@gnu.org>
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16
README
16
README
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@ -2,20 +2,22 @@
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Special note to Unix users
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==========================
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Please read the file "README.UNX", it contains important information
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regarding the installation of FreeType on Unix systems, especially
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GNU based operating systems like GNU/Linux.
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Please read the file "README.UNX", it contains important
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information regarding the installation of FreeType on Unix
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systems, especially GNU based operating systems like GNU/Linux.
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FreeType 2.0.6
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==============
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Please read the docs/CHANGES file, it contains IMPORTANT INFORMATION.
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Please read the docs/CHANGES file, it contains IMPORTANT
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INFORMATION.
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Read the files "INSTALL" or "docs/BUILD" for installation instructions.
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Read the files "INSTALL" or "docs/BUILD" for installation
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instructions.
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Note that the FreeType 2 documentation is now available as a separate
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package from our sites. See:
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Note that the FreeType 2 documentation is now available as a
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separate package from our sites. See:
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ftp://ftp.freetype.org/pub/freetype2/ftdocs-2.0.6.tar.bz2
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ftp://ftp.freetype.org/pub/freetype2/ftdocs-2.0.6.tar.gz
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141
README.UNX
141
README.UNX
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@ -1,109 +1,104 @@
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SPECIAL NOTE FOR UNIX USERS:
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============================
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If you're installing this release of FreeType on a system that
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already uses release 2.0.5 (or even an older version), you'll
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need to perform a few special steps to ensure that everything
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goes well:
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I. Enable the TrueType bytecode hinter if you need it:
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------------------------------------------------------
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The TrueType bytecode interpreter is disabled in all
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public releases of the FreeType packages for patents
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reasons (see www.freetype.org/patents.html for more
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details).
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SPECIAL NOTE FOR UNIX USERS
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===========================
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If you are installing this release of FreeType on a system that
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already uses release 2.0.5 (or even an older version), you have to
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perform a few special steps to ensure that everything goes well.
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I. Enable the TrueType bytecode hinter if you need it
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-----------------------------------------------------
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The TrueType bytecode interpreter is disabled in all public
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releases of the FreeType packages for patents reasons (see
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http://www.freetype.org/patents.html for more details).
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However, many Linux distributions do enable the
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interpreter in the FreeType packages (DEB/RPM/etc..) they
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produce for their platforms. If you're using TrueType fonts
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on your system, you'll most probably want to enable it
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manually by doing the following:
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However, many Linux distributions do enable the interpreter in the
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FreeType packages (DEB/RPM/etc.) they produce for their platforms.
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If you are using TrueType fonts on your system, you most probably
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want to enable it manually by doing the following:
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- open the file "include/freetype/config/ftoption.h"
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- locate a line that says:
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#undef TT_CONFIG_OPTION_BYTECODE_ITNERPRETER
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#undef TT_CONFIG_OPTION_BYTECODE_ITNERPRETER
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- change it to:
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#define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
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of course, this must be done _before_ compiling the
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library
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of course, this must be done _before_ compiling the library
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II. Determine the correct installation path:
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--------------------------------------------
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II. Determine the correct installation path
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-------------------------------------------
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By default, the source package will install the library
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in "/usr/local". However, many Unix distributions now
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install the library in "/usr", since FreeType is becoming
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a critical system component
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By default, the source package will install the library in
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"/usr/local". However, many Unix distributions now install the
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library in "/usr", since FreeType is becoming a critical system
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component.
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If FreeType is already installed on your system, type
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freetype-config --prefix
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freetype-config --prefix
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on the command line. This should return the installation
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path to use below (e.g. "/usr" or "/usr/local"). Otherwise,
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simply use "/usr"
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on the command line. This should return the installation path to
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use below (e.g. "/usr" or "/usr/local"). Otherwise, simply use
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"/usr".
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Then, to build and install the library, type:
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make setup unix CFG="--prefix=<yourprefix>"
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make
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make install (as root)
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then, to build and install the library, type:
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make setup unix CFG="--prefix=<yourprefix>"
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make
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make install (as root)
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where "<yourprefix>" must be replaced by the prefix returned
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by the "freetype-config" command.
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where "<yourprefix>" must be replaced by the prefix returned by
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the "freetype-config" command.
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III. Take care of XFree86 4:
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----------------------------
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III. Take care of XFree86 version 4
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-----------------------------------
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Certain recent Linux distributions will install _several_
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versions of FreeType on your system.. For example, on a
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fresh Mandrake 8.1 system, you'll find the following files:
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Certain recent Linux distributions will install _several_ versions
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of FreeType on your system. For example, on a fresh Mandrake 8.1
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system, you can find the following files:
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/usr/lib/libfreetype.so which links to
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/usr/lib/libfreetype.6.1.0.so
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/usr/lib/libfreetype.so which links to
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/usr/lib/libfreetype.6.1.0.so
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and:
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and
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/usr/X11R6/lib/libfreetype.so which links to
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/usr/X11R6/lib/libfreetype.6.0.so
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/usr/X11R6/lib/libfreetype.so which links to
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/usr/X11R6/lib/libfreetype.6.0.so
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note that these files correspond to two distinct versions of
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the library ! It seems that this surprising issue is due to
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the install scripts of recent XFree86 servers (from 4.1.0)
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which irremediably install their own (dated) version of
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the library in "/usr/X11R6/lib"
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Note that these files correspond to two distinct versions of the
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library! It seems that this surprising issue is due to the
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install scripts of recent XFree86 servers (from 4.1.0) which
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irremediably install their own (dated) version of the library in
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"/usr/X11R6/lib".
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In certain _rare_ cases, you may experience minor problems if
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you install this release of the library in "/usr" only, namely,
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that certain applications will not benefit from the bug fixes
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and rendering improvements you'd expect..
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In certain _rare_ cases you may experience minor problems if you
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install this release of the library in "/usr" only, namely, that
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certain applications will not benefit from the bug fixes and
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rendering improvements you'd expect.
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There are two good ways to deal with such nasty systems:
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There are two good ways to deal with this situation:
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- install the library _twice_, in "/usr" and in "/usr/X11R6"
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(you'll need to do that each time you install a new
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FreeType release though)
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- Install the library _twice_, in "/usr" and in "/usr/X11R6"
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(you have to do that each time you install a new FreeType
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release though).
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- change the link in /usr/X11R6/lib/libfreetype.so to point
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to /usr/lib/libfreetype.so, and get rid of
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/usr/X11R6/lib/libfreetype.6.0.so
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- Change the link in /usr/X11R6/lib/libfreetype.so to point to
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/usr/lib/libfreetype.so,
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The FreeType Team is not responsible for this mess, so please contact
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either the XFree86 development team or your Linux distributor to help
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clear this issue.., or if the above information doesn't help..
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and get rid of
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/usr/X11R6/lib/libfreetype.6.0.so
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The FreeType Team is not responsible for this problem, so please
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contact either the XFree86 development team or your Linux
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distributor to help clear this issue in case the information given
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here doesn't help.
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@ -240,6 +240,7 @@
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FT_Stream stream = loader->stream;
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FT_Int byte_len = loader->byte_len - 10;
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if ( byte_len < 0 )
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return TT_Err_Invalid_Outline;
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@ -281,8 +282,9 @@
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short* cur = gloader->current.outline.contours;
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short* limit = cur + n_contours;
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/* check room for contours array + instructions count */
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byte_len -= 2*(n_contours+1);
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/* check space for contours array + instructions count */
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byte_len -= 2 * ( n_contours + 1 );
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if ( byte_len < 0 )
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goto Invalid_Outline;
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@ -376,12 +378,12 @@
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{
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if ( *flag & 2 )
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byte_len -= 1;
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else if ( (*flag & 16) == 0 )
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else if ( ( *flag & 16 ) == 0 )
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byte_len -= 2;
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if ( *flag & 4 )
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byte_len -= 1;
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else if ( (*flag & 32) == 0 )
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else if ( ( *flag & 32 ) == 0 )
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byte_len -= 2;
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}
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@ -389,7 +391,6 @@
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goto Invalid_Outline;
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}
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/* reading the X coordinates */
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{
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@ -487,7 +488,7 @@
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if ( error )
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goto Fail;
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/* check room */
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/* check space */
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byte_len -= 4;
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if ( byte_len < 0 )
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goto Invalid_Composite;
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@ -499,7 +500,7 @@
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subglyph->flags = GET_UShort();
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subglyph->index = GET_UShort();
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/* check room */
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/* check space */
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byte_len -= 2;
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if ( subglyph->flags & ARGS_ARE_WORDS )
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byte_len -= 2;
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@ -823,7 +824,7 @@
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goto Exit;
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}
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loader->byte_len = (FT_Int) count;
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loader->byte_len = (FT_Int)count;
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#if 0
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/* temporary hack */
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