Fix: Dereference of null pointer in FOptiAttr
This commit is contained in:
Markus Gans
parent
4cccc6527b
commit
add402c5ac
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@ -76,18 +76,25 @@ inline bool FOptiAttr::hasColor (char_data*& attr)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::colorChange (char_data*& term, char_data*& next)
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{
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if ( term && next )
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{
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return bool ( fake_reverse
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|| term->fg_color != next->fg_color
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|| term->bg_color != next->bg_color );
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}
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return false;
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}
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//----------------------------------------------------------------------
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inline void FOptiAttr::resetColor (char_data*& attr)
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{
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if ( attr )
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{
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attr->fg_color = Default;
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attr->bg_color = Default;
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}
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}
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//----------------------------------------------------------------------
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inline void FOptiAttr::prevent_no_color_video_attributes (char_data*& attr)
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@ -195,7 +202,7 @@ void FOptiAttr::change_color (char_data*& term, char_data*& next)
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short fg = next->fg_color;
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short bg = next->bg_color;
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if ( monochron )
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if ( monochron || ! term || ! next )
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return;
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if ( fg == Default || bg == Default )
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@ -306,6 +313,9 @@ void FOptiAttr::change_color (char_data*& term, char_data*& next)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::hasAttribute (char_data*& attr)
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{
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if ( ! attr )
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return false;
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return attr->bold == true
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|| attr->dim == true
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|| attr->italic == true
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@ -323,6 +333,8 @@ inline bool FOptiAttr::hasAttribute (char_data*& attr)
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//----------------------------------------------------------------------
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inline void FOptiAttr::resetAttribute (char_data*& attr)
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{
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if ( attr )
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{
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attr->bold = \
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attr->dim = \
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@ -338,6 +350,7 @@ inline void FOptiAttr::resetAttribute (char_data*& attr)
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attr->alt_charset = \
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attr->pc_charset = false;
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}
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}
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//----------------------------------------------------------------------
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inline void FOptiAttr::reset (char_data*& attr)
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@ -378,6 +391,9 @@ bool FOptiAttr::caused_reset_attributes (char*& cap, uChar test)
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//----------------------------------------------------------------------
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inline void FOptiAttr::detectSwitchOn (char_data*& term, char_data*& next)
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{
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if ( ! term || ! next )
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return;
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on.bold = ! term->bold && next->bold;
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on.dim = ! term->dim && next->dim;
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on.italic = ! term->italic && next->italic;
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@ -396,6 +412,9 @@ inline void FOptiAttr::detectSwitchOn (char_data*& term, char_data*& next)
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//----------------------------------------------------------------------
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inline void FOptiAttr::detectSwitchOff (char_data*& term, char_data*& next)
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{
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if ( ! term || ! next )
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return;
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off.bold = term->bold && ! next->bold;
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off.dim = term->dim && ! next->dim;
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off.italic = term->italic && ! next->italic;
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@ -481,7 +500,7 @@ inline bool FOptiAttr::unsetTermBold (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermDim (char_data*& term)
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{
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if ( append_sequence(F_enter_dim_mode.cap) )
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if ( term && append_sequence(F_enter_dim_mode.cap) )
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return (term->dim = true);
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else
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return false;
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@ -491,7 +510,7 @@ inline bool FOptiAttr::setTermDim (char_data*& term)
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inline bool FOptiAttr::unsetTermDim (char_data*& term)
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{
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// Back to normal intensity (turns off bold + dim)
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if ( append_sequence(F_exit_dim_mode.cap) )
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if ( term && append_sequence(F_exit_dim_mode.cap) )
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{
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if ( F_exit_dim_mode.caused_reset )
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reset(term);
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@ -510,7 +529,7 @@ inline bool FOptiAttr::unsetTermDim (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermItalic (char_data*& term)
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{
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if ( append_sequence(F_enter_italics_mode.cap) )
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if ( term && append_sequence(F_enter_italics_mode.cap) )
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return (term->italic = true);
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else
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return false;
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@ -519,7 +538,7 @@ inline bool FOptiAttr::setTermItalic (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermItalic (char_data*& term)
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{
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if ( append_sequence(F_exit_italics_mode.cap) )
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if ( term && append_sequence(F_exit_italics_mode.cap) )
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{
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if ( F_exit_italics_mode.caused_reset )
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reset(term);
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@ -545,7 +564,7 @@ inline bool FOptiAttr::setTermUnderline (char_data*& term)
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inline bool FOptiAttr::unsetTermUnderline (char_data*& term)
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{
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// Turns off every underlining
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if ( append_sequence(F_exit_underline_mode.cap) )
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if ( term && append_sequence(F_exit_underline_mode.cap) )
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{
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if ( F_exit_underline_mode.caused_reset )
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reset(term);
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@ -564,7 +583,7 @@ inline bool FOptiAttr::unsetTermUnderline (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermBlink (char_data*& term)
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{
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if ( append_sequence(F_enter_blink_mode.cap) )
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if ( term && append_sequence(F_enter_blink_mode.cap) )
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return (term->blink = true);
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else
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return false;
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@ -573,7 +592,7 @@ inline bool FOptiAttr::setTermBlink (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermBlink (char_data*& term)
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{
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if ( append_sequence(F_exit_blink_mode.cap) )
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if ( term && append_sequence(F_exit_blink_mode.cap) )
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{
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if ( F_exit_blink_mode.caused_reset )
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reset(term);
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@ -589,7 +608,7 @@ inline bool FOptiAttr::unsetTermBlink (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermReverse (char_data*& term)
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{
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if ( append_sequence(F_enter_reverse_mode.cap) )
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if ( term && append_sequence(F_enter_reverse_mode.cap) )
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return (term->reverse = true);
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else
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return false;
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@ -598,7 +617,7 @@ inline bool FOptiAttr::setTermReverse (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermReverse (char_data*& term)
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{
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if ( append_sequence(F_exit_reverse_mode.cap) )
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if ( term && append_sequence(F_exit_reverse_mode.cap) )
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{
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if ( F_exit_reverse_mode.caused_reset )
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reset(term);
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@ -614,7 +633,7 @@ inline bool FOptiAttr::unsetTermReverse (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermStandout (char_data*& term)
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{
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if ( append_sequence(F_enter_standout_mode.cap) )
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if ( term && append_sequence(F_enter_standout_mode.cap) )
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return (term->standout = true);
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else
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return false;
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@ -623,7 +642,7 @@ inline bool FOptiAttr::setTermStandout (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermStandout (char_data*& term)
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{
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if ( append_sequence(F_exit_standout_mode.cap) )
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if ( term && append_sequence(F_exit_standout_mode.cap) )
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{
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if ( F_exit_standout_mode.caused_reset )
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reset(term);
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@ -639,7 +658,7 @@ inline bool FOptiAttr::unsetTermStandout (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermInvisible (char_data*& term)
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{
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if ( append_sequence(F_enter_secure_mode.cap) )
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if ( term && append_sequence(F_enter_secure_mode.cap) )
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return (term->invisible = true);
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else
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return false;
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@ -648,7 +667,7 @@ inline bool FOptiAttr::setTermInvisible (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermInvisible (char_data*& term)
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{
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if ( append_sequence(F_exit_secure_mode.cap) )
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if ( term && append_sequence(F_exit_secure_mode.cap) )
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{
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if ( F_exit_secure_mode.caused_reset )
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reset(term);
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@ -664,7 +683,7 @@ inline bool FOptiAttr::unsetTermInvisible (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermProtected (char_data*& term)
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{
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if ( append_sequence(F_enter_protected_mode.cap) )
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if ( term && append_sequence(F_enter_protected_mode.cap) )
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return (term->protect = true);
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else
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return false;
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@ -673,7 +692,7 @@ inline bool FOptiAttr::setTermProtected (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermProtected (char_data*& term)
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{
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if ( append_sequence(F_exit_protected_mode.cap) )
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if ( term && append_sequence(F_exit_protected_mode.cap) )
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{
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if ( F_exit_protected_mode.caused_reset )
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reset(term);
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@ -689,7 +708,7 @@ inline bool FOptiAttr::unsetTermProtected (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermCrossedOut (char_data*& term)
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{
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if ( append_sequence(F_enter_crossed_out_mode.cap) )
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if ( term && append_sequence(F_enter_crossed_out_mode.cap) )
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return (term->crossed_out = true);
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else
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return false;
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@ -698,7 +717,7 @@ inline bool FOptiAttr::setTermCrossedOut (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermCrossedOut (char_data*& term)
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{
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if ( append_sequence(F_exit_crossed_out_mode.cap) )
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if ( term && append_sequence(F_exit_crossed_out_mode.cap) )
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{
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if ( F_exit_crossed_out_mode.caused_reset )
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reset(term);
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@ -714,7 +733,7 @@ inline bool FOptiAttr::unsetTermCrossedOut (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermDoubleUnderline (char_data*& term)
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{
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if ( append_sequence(F_enter_dbl_underline_mode.cap) )
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if ( term && append_sequence(F_enter_dbl_underline_mode.cap) )
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return (term->dbl_underline = true);
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else
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return false;
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@ -724,7 +743,7 @@ inline bool FOptiAttr::setTermDoubleUnderline (char_data*& term)
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inline bool FOptiAttr::unsetTermDoubleUnderline (char_data*& term)
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{
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// Turns off every underlining
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if ( append_sequence(F_exit_dbl_underline_mode.cap) )
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if ( term && append_sequence(F_exit_dbl_underline_mode.cap) )
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{
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if ( F_exit_dbl_underline_mode.caused_reset )
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reset(term);
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@ -746,7 +765,7 @@ bool FOptiAttr::setTermAttributes ( char_data*& term
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, bool p4, bool p5, bool p6
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, bool p7, bool p8, bool p9 )
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{
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if ( F_set_attributes.cap )
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if ( term && F_set_attributes.cap )
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{
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char* sgr = tparm ( F_set_attributes.cap
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, p1, p2, p3, p4, p5, p6, p7, p8, p9 );
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@ -777,7 +796,7 @@ bool FOptiAttr::setTermAttributes ( char_data*& term
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermAttributes (char_data*& term)
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{
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if ( replace_sequence(F_exit_attribute_mode.cap) )
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if ( term && replace_sequence(F_exit_attribute_mode.cap) )
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{
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reset(term);
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return true;
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@ -789,7 +808,7 @@ inline bool FOptiAttr::unsetTermAttributes (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermAltCharset (char_data*& term)
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{
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if ( append_sequence(F_enter_alt_charset_mode.cap) )
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if ( term && append_sequence(F_enter_alt_charset_mode.cap) )
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{
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term->alt_charset = true;
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return true;
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@ -801,7 +820,7 @@ inline bool FOptiAttr::setTermAltCharset (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermAltCharset (char_data*& term)
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{
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if ( append_sequence(F_exit_alt_charset_mode.cap) )
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if ( term && append_sequence(F_exit_alt_charset_mode.cap) )
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{
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term->alt_charset = false;
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return true;
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@ -813,7 +832,7 @@ inline bool FOptiAttr::unsetTermAltCharset (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::setTermPCcharset (char_data*& term)
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{
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if ( append_sequence(F_enter_pc_charset_mode.cap) )
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if ( term && append_sequence(F_enter_pc_charset_mode.cap) )
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{
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term->pc_charset = true;
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return true;
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@ -825,7 +844,7 @@ inline bool FOptiAttr::setTermPCcharset (char_data*& term)
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//----------------------------------------------------------------------
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inline bool FOptiAttr::unsetTermPCcharset (char_data*& term)
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{
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if ( append_sequence(F_exit_pc_charset_mode.cap) )
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if ( term && append_sequence(F_exit_pc_charset_mode.cap) )
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{
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term->pc_charset = false;
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return true;
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@ -837,6 +856,9 @@ inline bool FOptiAttr::unsetTermPCcharset (char_data*& term)
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//----------------------------------------------------------------------
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bool FOptiAttr::setTermDefaultColor (char_data*& term)
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{
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if ( ! term )
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return false;
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if ( append_sequence(F_orig_pair.cap) )
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{
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term->fg_color = Default;
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@ -1298,8 +1320,10 @@ char* FOptiAttr::change_attribute (char_data*& term, char_data*& next)
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fake_reverse = false;
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attr_buf[0] = '\0';
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prevent_no_color_video_attributes (next);
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if ( ! term || ! next )
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return attr_buf;
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prevent_no_color_video_attributes (next);
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detectSwitchOn (term, next);
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detectSwitchOff (term, next);
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