a2a704492b
Similar to the xterm AllowWindowOps option, this is an option to allow or disallow certain (non-interactive) operations that can be insecure or exploited. NOTE: xsettitle() is not guarded by this because st does not support printing the window title. Else this could be exploitable (arbitrary code execution). Similar problems have been found in the past in other terminal emulators. The sequence for base64-encoded clipboard copy is now guarded because it allows a sequence written to the terminal to manipulate the clipboard of the running user non-interactively, for example: printf '\x1b]52;0;ZWNobyBoaQ0=\a'
125 lines
2.8 KiB
C
125 lines
2.8 KiB
C
/* See LICENSE for license details. */
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#include <stdint.h>
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#include <sys/types.h>
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/* macros */
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define MAX(a, b) ((a) < (b) ? (b) : (a))
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#define LEN(a) (sizeof(a) / sizeof(a)[0])
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#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
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#define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
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#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
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#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
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#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
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(a).bg != (b).bg)
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#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
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(t1.tv_nsec-t2.tv_nsec)/1E6)
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#define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
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#define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
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#define IS_TRUECOL(x) (1 << 24 & (x))
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enum glyph_attribute {
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ATTR_NULL = 0,
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ATTR_BOLD = 1 << 0,
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ATTR_FAINT = 1 << 1,
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ATTR_ITALIC = 1 << 2,
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ATTR_UNDERLINE = 1 << 3,
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ATTR_BLINK = 1 << 4,
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ATTR_REVERSE = 1 << 5,
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ATTR_INVISIBLE = 1 << 6,
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ATTR_STRUCK = 1 << 7,
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ATTR_WRAP = 1 << 8,
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ATTR_WIDE = 1 << 9,
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ATTR_WDUMMY = 1 << 10,
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ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
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};
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enum selection_mode {
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SEL_IDLE = 0,
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SEL_EMPTY = 1,
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SEL_READY = 2
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};
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enum selection_type {
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SEL_REGULAR = 1,
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SEL_RECTANGULAR = 2
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};
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enum selection_snap {
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SNAP_WORD = 1,
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SNAP_LINE = 2
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};
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typedef unsigned char uchar;
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typedef unsigned int uint;
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typedef unsigned long ulong;
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typedef unsigned short ushort;
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typedef uint_least32_t Rune;
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#define Glyph Glyph_
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typedef struct {
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Rune u; /* character code */
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ushort mode; /* attribute flags */
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uint32_t fg; /* foreground */
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uint32_t bg; /* background */
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} Glyph;
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typedef Glyph *Line;
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typedef union {
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int i;
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uint ui;
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float f;
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const void *v;
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const char *s;
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} Arg;
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void die(const char *, ...);
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void redraw(void);
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void draw(void);
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void printscreen(const Arg *);
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void printsel(const Arg *);
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void sendbreak(const Arg *);
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void toggleprinter(const Arg *);
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int tattrset(int);
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void tnew(int, int);
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void tresize(int, int);
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void tsetdirtattr(int);
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void ttyhangup(void);
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int ttynew(char *, char *, char *, char **);
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size_t ttyread(void);
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void ttyresize(int, int);
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void ttywrite(const char *, size_t, int);
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void resettitle(void);
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void selclear(void);
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void selinit(void);
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void selstart(int, int, int);
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void selextend(int, int, int, int);
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int selected(int, int);
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char *getsel(void);
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size_t utf8encode(Rune, char *);
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void *xmalloc(size_t);
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void *xrealloc(void *, size_t);
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char *xstrdup(char *);
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/* config.h globals */
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extern char *utmp;
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extern char *scroll;
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extern char *stty_args;
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extern char *vtiden;
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extern wchar_t *worddelimiters;
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extern int allowaltscreen;
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extern int allowwindowops;
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extern char *termname;
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extern unsigned int tabspaces;
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extern unsigned int defaultfg;
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extern unsigned int defaultbg;
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