coap_opt_iterator_t *
coap_option_iterator_init(coap_pdu_t *pdu, coap_opt_iterator_t *oi,
const coap_opt_filter_t filter) {
assert(pdu); assert(oi);
memset(oi, 0, sizeof(coap_opt_iterator_t));
if (pdu->hdr->optcnt) {
oi->optcnt = pdu->hdr->optcnt;
oi->option = options_start(pdu);
oi->type = COAP_OPT_DELTA(oi->option);
memcpy(oi->filter, filter, sizeof(coap_opt_filter_t));
return oi;
}
return NULL;
}
void
for_each_option(coap_pdu_t *pdu,
void (*f)(coap_opt_t *, unsigned char, unsigned int, const unsigned char *) ) {
unsigned char cnt;
coap_opt_t *opt;
unsigned char opt_code = 0;
if (! pdu )
return;
opt = options_start( pdu );
for ( cnt = pdu->hdr->optcnt; cnt; --cnt ) {
opt_code += COAP_OPT_DELTA(*opt);
f ( opt, opt_code, COAP_OPT_LENGTH(*opt), COAP_OPT_VALUE(*opt) );
opt = (coap_opt_t *)( (unsigned char *)opt + COAP_OPT_SIZE(*opt) );
}
}
/*
** Use the options to set the baud rate and such.
** This is a parser and interpreter.
**
** The options string is in the form:
** speed=9600 parity=none bits=8 xonxoff=yes
*/
static void set_options(const char *printer_name, const char *printer_options, int portfd, struct termios *settings, struct OPTIONS *options)
{
struct OPTIONS_STATE o;
char name[16];
char value[16];
int retval;
struct termios readback;
/* Set defaults. If changeable, default for online is DSR and CTS
must be asserted. We don't normaly opt to detect hangups (which
I believe means loss of CD). We don't normally send ^T's. */
#ifdef TIOCMGET
options->online = TIOCM_DSR | TIOCM_CTS;
#endif
options->detect_hangups = FALSE;
options->idle_status_interval = 0;
/* If feedback is on and control-d handshaking is on, turn on the ^T stuff. */
if(int_cmdline.feedback
&& (int_cmdline.jobbreak == JOBBREAK_CONTROL_D
|| int_cmdline.jobbreak == JOBBREAK_PJL)
)
options->idle_status_interval = 15;
/* Parse the interface options. */
options_start(printer_options, &o);
while((retval = options_get_one(&o, name, sizeof(name), value, sizeof(value))) > 0)
{
/* Intepret the keyword. */
if(strcmp(name, "speed") == 0)
{
speed_t speed;
if((speed = speed_convert(value)) == B0
|| cfsetispeed(settings, speed) == -1
|| cfsetospeed(settings, speed) == -1)
{
o.error = N_("Illegal \"speed=\" value");
retval = -1;
break;
}
}
else if(strcmp(name, "xonxoff") == 0)
{
gu_boolean answer;
if(gu_torf_setBOOL(&answer,value) == -1)
{
o.error = N_("Invalid boolean value");
retval = -1;
break;
}
if(answer) /* on */
settings->c_iflag |= IXON | IXOFF;
else /* off */
settings->c_iflag &= ~(IXON | IXOFF);
}
else if(strcmp(name, "rtscts") == 0)
{
gu_boolean answer;
if(gu_torf_setBOOL(&answer,value) == -1)
{
o.error = N_("Invalid boolean value");
retval = -1;
break;
}
#ifdef CRTSCTS
#ifdef CRTSXOFF /* SunOS 5.x */
if(answer)
settings->c_cflag |= (CRTSCTS | CRTSXOFF);
else
settings->c_cflag &= ~(CRTSCTS | CRTSXOFF);
#else /* Linux */
if(answer)
settings->c_cflag |= CRTSCTS;
else
settings->c_cflag &= ~CRTSCTS;
#endif
#else
o.error = N_("No OS support for RTS/CTS handshaking");
retval = -1;
break;
#endif
}
else if(strcmp(name, "parity") == 0)
{
if(strcmp(value, "none") == 0)
{
settings->c_cflag &= ~PARENB; /* clear parity enable */
}
else if(strcmp(value, "even") == 0)
{
settings->c_cflag &= ~PARODD; /* clear odd parity */
settings->c_cflag |= PARENB; /* enable parity */
}
else if(strcmp(value, "odd") == 0)
{
settings->c_cflag |= PARODD; /* set odd parity */
settings->c_cflag |= PARENB; /* enable parity */
}
else
{
o.error = N_("Only valid values are \"odd\", \"even\", and \"none\"");
retval = -1;
break;
}
}
else if(strcmp(name, "bits") == 0)
{
int bits;
if((bits = atoi(value)) != 7 && bits != 8)
{
o.error = N_("Only valid values are 7 and 8");
retval = -1;
break;
}
settings->c_cflag &= ~CSIZE; /* clear old setting */
if(bits == 7)
settings->c_cflag |= CS7;
else
settings->c_cflag |= CS8;
}
else if(strcmp(name, "online") == 0)
{
#ifdef TIOCMGET
if(gu_strcasecmp(value, "dsr/cts") == 0)
options->online = TIOCM_DSR | TIOCM_CTS;
else if(gu_strcasecmp(value, "dsr") == 0)
options->online = TIOCM_DSR;
else if(gu_strcasecmp(value, "cts") == 0)
options->online = TIOCM_CTS;
else if(gu_strcasecmp(value, "none") == 0)
options->online = 0;
else
{
o.error = N_("Only valid values are \"DSR/CTS\", \"DSR\", \"CTS\", and \"none\"");
retval = -1;
break;
}
#else
o.error = N_("No OS support for DSR or CTS state reporting");
retval = -1;
break;
#endif
}
else if(strcmp(name, "detect_hangups") == 0)
{
if(gu_torf_setBOOL(&options->detect_hangups,value) == -1)
{
o.error = N_("Invalid boolean value");
retval = -1;
break;
}
}
else if(strcmp(name, "hangup_on_close") == 0)
{
gu_boolean answer;
if(gu_torf_setBOOL(&answer,value) == -1)
{
o.error = N_("Invalid boolean value");
retval = -1;
break;
}
if(answer)
settings->c_cflag |= HUPCL;
else
settings->c_cflag &= ~HUPCL;
}
else if(strcmp(name, "idle_status_interval") == 0)
{
if((options->idle_status_interval = atoi(value)) < 0)
{
o.error = N_("Negative value not allowed");
retval = -1;
break;
}
}
else
{
o.error = N_("unrecognized keyword");
retval = -1;
break;
}
} /* end of while() */
/* See if final call to options_get_one() detected an error: */
if(retval == -1)
{
alert(int_cmdline.printer, TRUE, _("Option parsing error: %s"), gettext(o.error));
alert(int_cmdline.printer, FALSE, "%s", o.options);
alert(int_cmdline.printer, FALSE, "%*s^ %s", o.index, "", _("right here"));
int_exit(EXIT_PRNERR_NORETRY_BAD_SETTINGS);
}
/* We can't use control-T status updates if the job
isn't PostScript, so override it in that case. */
if(int_cmdline.barbarlang[0])
options->idle_status_interval = 0;
/* Make sure the codes setting is ok. */
if((settings->c_cflag & CSIZE) == CS7
&& int_cmdline.codes != CODES_Clean7Bit
&& int_cmdline.codes != CODES_UNKNOWN)
{
alert(int_cmdline.printer, TRUE, _("%s interface: \"codes\" setting must be \"Clean7Bit\" if the option \"bits=7\" is set."), int_cmdline.int_basename);
int_exit(EXIT_PRNERR_NORETRY_BAD_SETTINGS);
}
/* If detect_hangups was set to true, clear CLOCAL: */
if(options->detect_hangups)
settings->c_cflag &= ~CLOCAL;
/* Write the new port settings. */
if(tcsetattr(portfd, TCSANOW, settings) == -1)
{
alert(int_cmdline.printer, TRUE, "%s interface: tcsetattr() failed, errno=%d (%s)", int_cmdline.int_basename, errno, gu_strerror(errno));
int_exit(EXIT_PRNERR);
}
/* Make sure they were written correctly: */
if(tcgetattr(portfd, &readback) == -1)
{
alert(int_cmdline.printer, TRUE, "%s interface: tcgetattr() failed, errno=%d (%s)", int_cmdline.int_basename, errno, gu_strerror(errno));
int_exit(EXIT_PRNERR);
}
/* This code doesn't work. */
#if 0
if(memcmp(settings, &readback, sizeof(struct termios)))
{
alert(int_cmdline.printer, TRUE, _("%s interface: serial port driver does not support selected options"), int_cmdline.int_basename);
int_exit(EXIT_PRNERR_NORETRY);
}
#endif
} /* end of set_options() */
