freebsd-dev/contrib/ntp/ntpd/rc_cmdlength.c
Xin LI 4e1ef62a36 MFV r338092: ntp 4.2.8p12.
Relnotes:	yes
2018-08-21 02:38:07 +00:00

39 lines
800 B
C

#include <config.h>
#include <rc_cmdlength.h>
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
// XXX: Move to header.
size_t remoteconfig_cmdlength( const char *, const char *);
/* Bug 2853 */
/* evaluate the length of the command sequence. This breaks at the first
* char that is not >= SPACE and <= 127 after trimming from the right.
*/
size_t
remoteconfig_cmdlength(
const char *src_buf,
const char *src_end
)
{
const char *scan;
unsigned char ch;
/* trim whitespace & garbage from the right */
while (src_end != src_buf) {
ch = src_end[-1];
if (ch > ' ' && ch < 128)
break;
--src_end;
}
/* now do a forward scan */
for (scan = src_buf; scan != src_end; ++scan) {
ch = scan[0];
if ((ch < ' ' || ch >= 128) && ch != '\t')
break;
}
return (size_t)(scan - src_buf);
}