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view src/nv_cmds.h @ 33262:6eac4f616293 v9.0.1899

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patch 9.0.1899: potential buffer overflow in PBYTE macro Commit: https://github.com/vim/vim/commit/ffb13674d1af1c90beb229867ec989e4fb232df3 Author: Christian Brabandt <cb@256bit.org> Date: Fri Sep 15 20:22:02 2023 +0200 patch 9.0.1899: potential buffer overflow in PBYTE macro Problem: potential buffer overflow in PBYTE macro Solution: Check returned memline length closes: #13083 the PBYTE macro is used to put byte c at a position lp of the returned memline. However, in case of unexpected errors ml_get_buf() may return either "???" or an empty line in which case it is quite likely that we are causing a buffer overrun. Therefore, switch the macro PBYTE (which is only used in ops.c anyhow) to a function, that verifies that we will only try to access within the given length of the buffer. Also, since the macro is only used in ops.c, move the definition from macros.h to ops.c Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Fri, 15 Sep 2023 20:30:07 +0200
parents 50555279168b
children
line wrap: on
line source

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar et al.
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */
/*
 * This file defines the Normal mode commands.
 */

/*
 * When adding a Normal/Visual mode command:
 * 1. Add an entry in the table `nv_cmds[]` below.
 * 2. Run "make nvcmdidxs" to re-generate nv_cmdidxs.h.
 * 3. Add an entry in the index for Normal/Visual commands at
 *    ":help normal-index" and ":help visual-index" .
 * 4. Add documentation in ../doc/xxx.txt.  Add a tag for both the short and
 *    long name of the command.
 */

#ifdef DO_DECLARE_NVCMD

/*
 * Used when building Vim.
 */
# define NVCMD(a, b, c, d) \
	{a, b, c, d}

#ifdef FEAT_GUI
#define NV_VER_SCROLLBAR	nv_ver_scrollbar
#define NV_HOR_SCROLLBAR	nv_hor_scrollbar
#else
#define NV_VER_SCROLLBAR nv_error
#define NV_HOR_SCROLLBAR nv_error
#endif

#ifdef FEAT_GUI_TABLINE
#define NV_TABLINE	nv_tabline
#define NV_TABMENU	nv_tabmenu
#else
#define NV_TABLINE	nv_error
#define NV_TABMENU	nv_error
#endif

#ifdef FEAT_NETBEANS_INTG
#define NV_NBCMD	nv_nbcmd
#else
#define NV_NBCMD	nv_error
#endif

#ifdef FEAT_DND
#define NV_DROP		nv_drop
#else
#define NV_DROP		nv_error
#endif

/*
 * Function to be called for a Normal or Visual mode command.
 * The argument is a cmdarg_T.
 */
typedef void (*nv_func_T)(cmdarg_T *cap);

// Values for cmd_flags.
#define NV_NCH	    0x01	  // may need to get a second char
#define NV_NCH_NOP  (0x02|NV_NCH) // get second char when no operator pending
#define NV_NCH_ALW  (0x04|NV_NCH) // always get a second char
#define NV_LANG	    0x08	// second char needs language adjustment

#define NV_SS	    0x10	// may start selection
#define NV_SSS	    0x20	// may start selection with shift modifier
#define NV_STS	    0x40	// may stop selection without shift modif.
#define NV_RL	    0x80	// 'rightleft' modifies command
#define NV_KEEPREG  0x100	// don't clear regname
#define NV_NCW	    0x200	// not allowed in command-line window

/*
 * Generally speaking, every Normal mode command should either clear any
 * pending operator (with *clearop*()), or set the motion type variable
 * oap->motion_type.
 *
 * When a cursor motion command is made, it is marked as being a character or
 * line oriented motion.  Then, if an operator is in effect, the operation
 * becomes character or line oriented accordingly.
 */

/*
 * This table contains one entry for every Normal or Visual mode command.
 * The order doesn't matter, this will be sorted by the create_nvcmdidx.vim
 * script to generate the nv_cmd_idx[] lookup table.
 * It is faster when all keys from zero to '~' are present.
 */
static const struct nv_cmd
{
    int		cmd_char;	// (first) command character
    nv_func_T   cmd_func;	// function for this command
    short_u	cmd_flags;	// NV_ flags
    short	cmd_arg;	// value for ca.arg
} nv_cmds[] =

#else  // DO_DECLARE_NVCMD

/*
 * Used when creating nv_cmdidxs.h.
 */
# define NVCMD(a, b, c, d)  a
static const int nv_cmds[] =

#endif // DO_DECLARE_NVCMD
{
    NVCMD(NUL,		nv_error,	0,			0),
    NVCMD(Ctrl_A,	nv_addsub,	0,			0),
    NVCMD(Ctrl_B,	nv_page,	NV_STS,			BACKWARD),
    NVCMD(Ctrl_C,	nv_esc,		0,			TRUE),
    NVCMD(Ctrl_D,	nv_halfpage,	0,			0),
    NVCMD(Ctrl_E,	nv_scroll_line,	0,			TRUE),
    NVCMD(Ctrl_F,	nv_page,	NV_STS,			FORWARD),
    NVCMD(Ctrl_G,	nv_ctrlg,	0,			0),
    NVCMD(Ctrl_H,	nv_ctrlh,	0,			0),
    NVCMD(Ctrl_I,	nv_pcmark,	0,			0),
    NVCMD(NL,		nv_down,	0,			FALSE),
    NVCMD(Ctrl_K,	nv_error,	0,			0),
    NVCMD(Ctrl_L,	nv_clear,	0,			0),
    NVCMD(CAR,		nv_down,	0,			TRUE),
    NVCMD(Ctrl_N,	nv_down,	NV_STS,			FALSE),
    NVCMD(Ctrl_O,	nv_ctrlo,	0,			0),
    NVCMD(Ctrl_P,	nv_up,		NV_STS,			FALSE),
    NVCMD(Ctrl_Q,	nv_visual,	0,			FALSE),
    NVCMD(Ctrl_R,	nv_redo_or_register, 0,			0),
    NVCMD(Ctrl_S,	nv_ignore,	0,			0),
    NVCMD(Ctrl_T,	nv_tagpop,	NV_NCW,			0),
    NVCMD(Ctrl_U,	nv_halfpage,	0,			0),
    NVCMD(Ctrl_V,	nv_visual,	0,			FALSE),
    NVCMD(Ctrl_W,	nv_window,	0,			0),
    NVCMD(Ctrl_X,	nv_addsub,	0,			0),
    NVCMD(Ctrl_Y,	nv_scroll_line,	0,			FALSE),
    NVCMD(Ctrl_Z,	nv_suspend,	0,			0),
    NVCMD(ESC,		nv_esc,		0,			FALSE),
    NVCMD(Ctrl_BSL,	nv_normal,	NV_NCH_ALW,		0),
    NVCMD(Ctrl_RSB,	nv_ident,	NV_NCW,			0),
    NVCMD(Ctrl_HAT,	nv_hat,		NV_NCW,			0),
    NVCMD(Ctrl__,	nv_error,	0,			0),
    NVCMD(' ',		nv_right,	0,			0),
    NVCMD('!',		nv_operator,	0,			0),
    NVCMD('"',		nv_regname,	NV_NCH_NOP|NV_KEEPREG,	0),
    NVCMD('#',		nv_ident,	0,			0),
    NVCMD('$',		nv_dollar,	0,			0),
    NVCMD('%',		nv_percent,	0,			0),
    NVCMD('&',		nv_optrans,	0,			0),
    NVCMD('\'',		nv_gomark,	NV_NCH_ALW,		TRUE),
    NVCMD('(',		nv_brace,	0,			BACKWARD),
    NVCMD(')',		nv_brace,	0,			FORWARD),
    NVCMD('*',		nv_ident,	0,			0),
    NVCMD('+',		nv_down,	0,			TRUE),
    NVCMD(',',		nv_csearch,	0,			TRUE),
    NVCMD('-',		nv_up,		0,			TRUE),
    NVCMD('.',		nv_dot,		NV_KEEPREG,		0),
    NVCMD('/',		nv_search,	0,			FALSE),
    NVCMD('0',		nv_beginline,	0,			0),
    NVCMD('1',		nv_ignore,	0,			0),
    NVCMD('2',		nv_ignore,	0,			0),
    NVCMD('3',		nv_ignore,	0,			0),
    NVCMD('4',		nv_ignore,	0,			0),
    NVCMD('5',		nv_ignore,	0,			0),
    NVCMD('6',		nv_ignore,	0,			0),
    NVCMD('7',		nv_ignore,	0,			0),
    NVCMD('8',		nv_ignore,	0,			0),
    NVCMD('9',		nv_ignore,	0,			0),
    NVCMD(':',		nv_colon,	0,			0),
    NVCMD(';',		nv_csearch,	0,			FALSE),
    NVCMD('<',		nv_operator,	NV_RL,			0),
    NVCMD('=',		nv_operator,	0,			0),
    NVCMD('>',		nv_operator,	NV_RL,			0),
    NVCMD('?',		nv_search,	0,			FALSE),
    NVCMD('@',		nv_at,		NV_NCH_NOP,		FALSE),
    NVCMD('A',		nv_edit,	0,			0),
    NVCMD('B',		nv_bck_word,	0,			1),
    NVCMD('C',		nv_abbrev,	NV_KEEPREG,		0),
    NVCMD('D',		nv_abbrev,	NV_KEEPREG,		0),
    NVCMD('E',		nv_wordcmd,	0,			TRUE),
    NVCMD('F',		nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD),
    NVCMD('G',		nv_goto,	0,			TRUE),
    NVCMD('H',		nv_scroll,	0,			0),
    NVCMD('I',		nv_edit,	0,			0),
    NVCMD('J',		nv_join,	0,			0),
    NVCMD('K',		nv_ident,	0,			0),
    NVCMD('L',		nv_scroll,	0,			0),
    NVCMD('M',		nv_scroll,	0,			0),
    NVCMD('N',		nv_next,	0,			SEARCH_REV),
    NVCMD('O',		nv_open,	0,			0),
    NVCMD('P',		nv_put,		0,			0),
    NVCMD('Q',		nv_exmode,	NV_NCW,			0),
    NVCMD('R',		nv_Replace,	0,			FALSE),
    NVCMD('S',		nv_subst,	NV_KEEPREG,		0),
    NVCMD('T',		nv_csearch,	NV_NCH_ALW|NV_LANG,	BACKWARD),
    NVCMD('U',		nv_Undo,	0,			0),
    NVCMD('V',		nv_visual,	0,			FALSE),
    NVCMD('W',		nv_wordcmd,	0,			TRUE),
    NVCMD('X',		nv_abbrev,	NV_KEEPREG,		0),
    NVCMD('Y',		nv_abbrev,	NV_KEEPREG,		0),
    NVCMD('Z',		nv_Zet,		NV_NCH_NOP|NV_NCW,	0),
    NVCMD('[',		nv_brackets,	NV_NCH_ALW,		BACKWARD),
    NVCMD('\\',		nv_error,	0,			0),
    NVCMD(']',		nv_brackets,	NV_NCH_ALW,		FORWARD),
    NVCMD('^',		nv_beginline,	0,		    BL_WHITE | BL_FIX),
    NVCMD('_',		nv_lineop,	0,			0),
    NVCMD('`',		nv_gomark,	NV_NCH_ALW,		FALSE),
    NVCMD('a',		nv_edit,	NV_NCH,			0),
    NVCMD('b',		nv_bck_word,	0,			0),
    NVCMD('c',		nv_operator,	0,			0),
    NVCMD('d',		nv_operator,	0,			0),
    NVCMD('e',		nv_wordcmd,	0,			FALSE),
    NVCMD('f',		nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD),
    NVCMD('g',		nv_g_cmd,	NV_NCH_ALW,		FALSE),
    NVCMD('h',		nv_left,	NV_RL,			0),
    NVCMD('i',		nv_edit,	NV_NCH,			0),
    NVCMD('j',		nv_down,	0,			FALSE),
    NVCMD('k',		nv_up,		0,			FALSE),
    NVCMD('l',		nv_right,	NV_RL,			0),
    NVCMD('m',		nv_mark,	NV_NCH_NOP,		0),
    NVCMD('n',		nv_next,	0,			0),
    NVCMD('o',		nv_open,	0,			0),
    NVCMD('p',		nv_put,		0,			0),
    NVCMD('q',		nv_record,	NV_NCH,			0),
    NVCMD('r',		nv_replace,	NV_NCH_NOP|NV_LANG,	0),
    NVCMD('s',		nv_subst,	NV_KEEPREG,		0),
    NVCMD('t',		nv_csearch,	NV_NCH_ALW|NV_LANG,	FORWARD),
    NVCMD('u',		nv_undo,	0,			0),
    NVCMD('v',		nv_visual,	0,			FALSE),
    NVCMD('w',		nv_wordcmd,	0,			FALSE),
    NVCMD('x',		nv_abbrev,	NV_KEEPREG,		0),
    NVCMD('y',		nv_operator,	0,			0),
    NVCMD('z',		nv_zet,		NV_NCH_ALW,		0),
    NVCMD('{',		nv_findpar,	0,			BACKWARD),
    NVCMD('|',		nv_pipe,	0,			0),
    NVCMD('}',		nv_findpar,	0,			FORWARD),
    NVCMD('~',		nv_tilde,	0,			0),

    // pound sign
    NVCMD(POUND,	nv_ident,	0,			0),
    NVCMD(K_MOUSEUP,	nv_mousescroll,	0,			MSCR_UP),
    NVCMD(K_MOUSEDOWN,	nv_mousescroll, 0,			MSCR_DOWN),
    NVCMD(K_MOUSELEFT,	nv_mousescroll, 0,			MSCR_LEFT),
    NVCMD(K_MOUSERIGHT, nv_mousescroll, 0,			MSCR_RIGHT),
    NVCMD(K_LEFTMOUSE,	nv_mouse,	0,			0),
    NVCMD(K_LEFTMOUSE_NM, nv_mouse,	0,			0),
    NVCMD(K_LEFTDRAG,	nv_mouse,	0,			0),
    NVCMD(K_LEFTRELEASE, nv_mouse,	0,			0),
    NVCMD(K_LEFTRELEASE_NM, nv_mouse,	0,			0),
    NVCMD(K_MOUSEMOVE,	nv_mouse,	0,			0),
    NVCMD(K_MIDDLEMOUSE, nv_mouse,	0,			0),
    NVCMD(K_MIDDLEDRAG, nv_mouse,	0,			0),
    NVCMD(K_MIDDLERELEASE, nv_mouse,	0,			0),
    NVCMD(K_RIGHTMOUSE, nv_mouse,	0,			0),
    NVCMD(K_RIGHTDRAG,	nv_mouse,	0,			0),
    NVCMD(K_RIGHTRELEASE, nv_mouse,	0,			0),
    NVCMD(K_X1MOUSE,	nv_mouse,	0,			0),
    NVCMD(K_X1DRAG,	nv_mouse,	0,			0),
    NVCMD(K_X1RELEASE,	nv_mouse,	0,			0),
    NVCMD(K_X2MOUSE,	nv_mouse,	0,			0),
    NVCMD(K_X2DRAG,	nv_mouse,	0,			0),
    NVCMD(K_X2RELEASE,	nv_mouse,	0,			0),
    NVCMD(K_IGNORE,	nv_ignore,	NV_KEEPREG,		0),
    NVCMD(K_NOP,	nv_nop,		0,			0),
    NVCMD(K_INS,	nv_edit,	0,			0),
    NVCMD(K_KINS,	nv_edit,	0,			0),
    NVCMD(K_BS,		nv_ctrlh,	0,			0),
    NVCMD(K_UP,		nv_up,		NV_SSS|NV_STS,		FALSE),
    NVCMD(K_S_UP,	nv_page,	NV_SS,			BACKWARD),
    NVCMD(K_DOWN,	nv_down,	NV_SSS|NV_STS,		FALSE),
    NVCMD(K_S_DOWN,	nv_page,	NV_SS,			FORWARD),
    NVCMD(K_LEFT,	nv_left,	NV_SSS|NV_STS|NV_RL,	0),
    NVCMD(K_S_LEFT,	nv_bck_word,	NV_SS|NV_RL,		0),
    NVCMD(K_C_LEFT,	nv_bck_word,	NV_SSS|NV_RL|NV_STS,	1),
    NVCMD(K_RIGHT,	nv_right,	NV_SSS|NV_STS|NV_RL,	0),
    NVCMD(K_S_RIGHT,	nv_wordcmd,	NV_SS|NV_RL,		FALSE),
    NVCMD(K_C_RIGHT,	nv_wordcmd,	NV_SSS|NV_RL|NV_STS,	TRUE),
    NVCMD(K_PAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD),
    NVCMD(K_KPAGEUP,	nv_page,	NV_SSS|NV_STS,		BACKWARD),
    NVCMD(K_PAGEDOWN,	nv_page,	NV_SSS|NV_STS,		FORWARD),
    NVCMD(K_KPAGEDOWN,	nv_page,	NV_SSS|NV_STS,		FORWARD),
    NVCMD(K_END,	nv_end,		NV_SSS|NV_STS,		FALSE),
    NVCMD(K_KEND,	nv_end,		NV_SSS|NV_STS,		FALSE),
    NVCMD(K_S_END,	nv_end,		NV_SS,			FALSE),
    NVCMD(K_C_END,	nv_end,		NV_SSS|NV_STS,		TRUE),
    NVCMD(K_HOME,	nv_home,	NV_SSS|NV_STS,		0),
    NVCMD(K_KHOME,	nv_home,	NV_SSS|NV_STS,		0),
    NVCMD(K_S_HOME,	nv_home,	NV_SS,			0),
    NVCMD(K_C_HOME,	nv_goto,	NV_SSS|NV_STS,		FALSE),
    NVCMD(K_DEL,	nv_abbrev,	0,			0),
    NVCMD(K_KDEL,	nv_abbrev,	0,			0),
    NVCMD(K_UNDO,	nv_kundo,	0,			0),
    NVCMD(K_HELP,	nv_help,	NV_NCW,			0),
    NVCMD(K_F1,		nv_help,	NV_NCW,			0),
    NVCMD(K_XF1,	nv_help,	NV_NCW,			0),
    NVCMD(K_SELECT,	nv_select,	0,			0),
    NVCMD(K_VER_SCROLLBAR, NV_VER_SCROLLBAR, 0,			0),
    NVCMD(K_HOR_SCROLLBAR, NV_HOR_SCROLLBAR, 0,			0),
    NVCMD(K_TABLINE,	NV_TABLINE,	0,			0),
    NVCMD(K_TABMENU,	NV_TABMENU,	0,			0),
    NVCMD(K_F21,	NV_NBCMD,	NV_NCH_ALW,		0),
    NVCMD(K_DROP,	NV_DROP,	NV_STS,			0),
    NVCMD(K_CURSORHOLD, nv_cursorhold,	NV_KEEPREG,		0),
    NVCMD(K_PS,		nv_edit,	0,			0),
    NVCMD(K_COMMAND,	nv_colon,	0,			0),
    NVCMD(K_SCRIPT_COMMAND, nv_colon,	0,			0),
};

// Number of commands in nv_cmds[].
#define NV_CMDS_SIZE ARRAY_LENGTH(nv_cmds)