From ed8fd6c56bae7bec8d02a4827bbdf4ec063e23ac Mon Sep 17 00:00:00 2001
From: Joogab Yun <joogab.yun@samsung.com>
Date: Wed, 2 Jan 2019 19:14:28 +0900
Subject: [PATCH] [Tizen] If the text size is too large, crash or deadlock will
 occur.

    So, we limit the length.

    3  Dali::Toolkit::Text::ShapeText (text=..., lineBreakInfo=...,
    scripts=..., fonts=...,
startCharacterIndex=startCharacterIndex@entry=0,
    startGlyphIndex=0,
numberOfCharacters=numberOfCharacters@entry=51371,
    glyphs=..., glyphToCharacterMap=..., charactersPerGlyph=...,
    newParagraphGlyphs=...) at
    /usr/src/debug/dali-toolkit-1.3.50.1/build/tizen/dali-toolkit/../../../dali-toolkit/internal/text/shaper.cpp:200
    ...
            currentIndex = 40291
            numberOfGlyphsReserved = 66782
            totalNumberOfGlyphs = 40203
            numberOfNewGlyphs = 40203
            glyphToCharacterMapBuffer = 0x9f85f8
            glyphIndex = 40196
            lastCharacter = 51371
            lastGlyph = <optimized out>

    (gdb)bt
    0  memmove () at
    /usr/src/debug//////////////glibc-2.24/string/../sysdeps/arm/memmove.S:124
    1  0xaaa57450 in Dali::VectorAlgorithms<true>::Insert
(this=0x9c67f8,
    at=0x896204a0 "", from=0x9f85f8 "\022", to=<optimized out>,
    elementSize=36) at
/usr/include/dali/public-api/common/dali-vector.h:373
    2  0xaaa7d25e in Dali::Vector<Dali::TextAbstraction::GlyphInfo,
    true>::Insert (to=<optimized out>, from=0x9f85f8, at=0x896204a0,
    this=0x9c67f8) at
/usr/include/dali/public-api/common/dali-vector.h:624
    3  Dali::Toolkit::Text::ShapeText (text=..., lineBreakInfo=...,
    scripts=..., fonts=...,
startCharacterIndex=startCharacterIndex@entry=0,
    startGlyphIndex=0,
numberOfCharacters=numberOfCharacters@entry=51371,
    glyphs=..., glyphToCharacterMap=..., charactersPerGlyph=...,
    newParagraphGlyphs=...) at
    /usr/src/debug/dali-toolkit-1.3.50.1/build/tizen/dali-toolkit/../../../dali-toolkit/internal/text/shaper.cpp:200
    4  0xaaa85b68 in Dali::Toolkit::Text::Controller::Impl::UpdateModel
    (this=0x9f9760, operationsRequired=<optimized out>) at
    /usr/src/debug/dali-toolkit-1.3.50.1/build/tizen/dali-toolkit/../../../dali-toolkit/internal/text/text-controller-impl.cpp:1019

Change-Id: I33ca1fe7c23db7a76cc66d5950e9bd82c25de5ff
---
 dali-toolkit/internal/text/text-controller.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dali-toolkit/internal/text/text-controller.cpp b/dali-toolkit/internal/text/text-controller.cpp
index 76c7690..d83483f 100755
--- a/dali-toolkit/internal/text/text-controller.cpp
+++ b/dali-toolkit/internal/text/text-controller.cpp
@@ -573,6 +573,13 @@ void Controller::SetText( const std::string& text )
       utf8 = reinterpret_cast<const uint8_t*>( text.c_str() );
     }
 
+    const Length maxTextLength = 32768u; // 1024 * 32;
+    if( textSize > maxTextLength )
+    {
+      DALI_LOG_WARNING( "The text size is too large(%d), limit the length to 32,768u\n", textSize );
+      textSize = maxTextLength;
+    }
+
     //  Convert text into UTF-32
     Vector<Character>& utf32Characters = mImpl->mModel->mLogicalModel->mText;
     utf32Characters.Resize( textSize );
-- 
2.7.4