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termio: skip pasted chars < ' ' but keep '\n' 

See https://www.openwall.com/lists/oss-security/2018/03/05/2
This commit is contained in:
Boris Faure 2019-03-19 23:18:03 +01:00
parent 9785beaef0
commit 756a45e654
1 changed files with 18 additions and 10 deletions
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28
src/bin/termio.c
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@ -1020,37 +1020,45 @@ _getsel_cb(void *data,
if (ev->format == ELM_SEL_FORMAT_TEXT)
{
char *tmp;
char *buf;
if (ev->len <= 0) return EINA_TRUE;
tmp = malloc(ev->len);
if (tmp)
buf = malloc(ev->len);
if (buf)
{
char *s = ev->data;
size_t i;
size_t i, pos = 0;
// apparently we have to convert \n into \r in terminal land.
/* apparently we have to convert \n into \r in terminal land. */
for (i = 0; i < ev->len && s[i]; i++)
{
tmp[i] = s[i];
if (tmp[i] == '\n') tmp[i] = '\r';
/* Skip escape codes as a security measure */
if ((s[i] < '\n') ||
((s[i] > '\n') && (s[i] < ' ')))
{
continue;
}
buf[pos] = s[i];
if (buf[pos] == '\n')
buf[pos] = '\r';
pos++;
}
if (i)
if (pos)
{
if (sd->pty->bracketed_paste)
termpty_write(sd->pty, "\x1b[200~",
sizeof("\x1b[200~") - 1);
termpty_write(sd->pty, tmp, i);
termpty_write(sd->pty, buf, pos);
if (sd->pty->bracketed_paste)
termpty_write(sd->pty, "\x1b[201~",
sizeof("\x1b[201~") - 1);
}
free(tmp);
free(buf);
}
}
else