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Support OSC 52 ? to read the top buffer inside tmux (when set-clipboard

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is changed to on), also add refresh-client -l to ask tmux to use the
same mechanism to get the clipboard from the terminal outside
tmux. GitHub issue 1477.
This commit is contained in:
nicm
2018-10-18 08:04:14 +00:00
parent bc0e527f32
commit a51668ca06
4 changed files with 201 additions and 39 deletions
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103
tty-keys.c
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@ -19,7 +19,10 @@
#include <sys/types.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <limits.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
@ -44,6 +47,8 @@ static int tty_keys_next1(struct tty *, const char *, size_t, key_code *,
size_t *, int);
static void tty_keys_callback(int, short, void *);
static int tty_keys_mouse(struct tty *, const char *, size_t, size_t *);
static int tty_keys_clipboard(struct tty *, const char *, size_t,
size_t *);
static int tty_keys_device_attributes(struct tty *, const char *, size_t,
size_t *);
@ -571,6 +576,17 @@ tty_keys_next(struct tty *tty)
return (0);
log_debug("%s: keys are %zu (%.*s)", c->name, len, (int)len, buf);
/* Is this a clipboard response? */
switch (tty_keys_clipboard(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_UNKNOWN;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this a device attributes response? */
switch (tty_keys_device_attributes(tty, buf, len, &size)) {
case 0: /* yes */
@ -871,6 +887,93 @@ tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
return (0);
}
/*
* Handle OSC 52 clipboard input. Returns 0 for success, -1 for failure, 1 for
* partial.
*/
static int
tty_keys_clipboard(__unused struct tty *tty, const char *buf, size_t len,
size_t *size)
{
size_t end, terminator, needed;
char *copy, *out;
int outlen;
*size = 0;
/* First three bytes are always \033]52;. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != ']')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '5')
return (-1);
if (len == 3)
return (1);
if (buf[3] != '2')
return (-1);
if (len == 4)
return (1);
if (buf[4] != ';')
return (-1);
if (len == 5)
return (1);
/* Find the terminator if any. */
for (end = 5; end < len; end++) {
if (buf[end] == '\007') {
terminator = 1;
break;
}
if (end > 5 && buf[end - 1] == '\033' && buf[end] == '\\') {
terminator = 2;
break;
}
}
if (end == len)
return (1);
*size = end + terminator;
/* Skip the initial part. */
buf += 5;
end -= 5;
/* Get the second argument. */
while (end != 0 && *buf != ';') {
buf++;
end--;
}
if (end == 0 || end == 1)
return (0);
buf++;
end--;
/* It has to be a string so copy it. */
copy = xmalloc(end + 1);
memcpy(copy, buf, end);
copy[end] = '\0';
/* Convert from base64. */
needed = (end / 4) * 3;
out = xmalloc(needed);
if ((outlen = b64_pton(copy, out, len)) == -1) {
free(out);
free(copy);
return (0);
}
free(copy);
/* Create a new paste buffer. */
log_debug("%s: %.*s", __func__, outlen, out);
paste_add(out, outlen);
return (0);
}
/*
* Handle device attributes input. Returns 0 for success, -1 for failure, 1 for
* partial.