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/*-
* Copyright (c) 2006 Verdens Gang AS
* Copyright (c) 2006-2007 Linpro AS
* All rights reserved.
*
* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: cli_common.c 1709 2007-07-17 10:15:44Z des $
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <poll.h>
#include <signal.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "vsb.h"
#include "cli.h"
#include "cli_priv.h"
#include "cli_common.h"
void
cli_out(struct cli *cli, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (cli != NULL)
vsb_vprintf(cli->sb, fmt, ap);
else
vfprintf(stdout, fmt, ap);
va_end(ap);
}
void
cli_result(struct cli *cli, unsigned res)
{
if (cli != NULL)
cli->result = res;
else
printf("CLI result = %d\n", res);
}
void
cli_param(struct cli *cli)
{
cli_result(cli, CLIS_PARAM);
cli_out(cli, "Parameter error, use \"help [command]\" for more info.\n");
}
int
cli_writeres(int fd, struct cli *cli)
{
int i, l;
struct iovec iov[3];
char res[CLI_LINE0_LEN + 2]; /*
* NUL + one more so we can catch
* any misformats by snprintf
*/
assert(cli->result >= 100);
assert(cli->result <= 999);
i = snprintf(res, sizeof res,
"%-3d %-8d\n", cli->result, vsb_len(cli->sb));
assert(i == CLI_LINE0_LEN);
iov[0].iov_base = (void*)(uintptr_t)res;
iov[1].iov_base = (void*)(uintptr_t)vsb_data(cli->sb);
iov[2].iov_base = (void*)(uintptr_t)"\n";
for (l = i = 0; i < 3; i++) {
iov[i].iov_len = strlen(iov[i].iov_base);
l += iov[i].iov_len;
}
i = writev(fd, iov, 3);
return (i != l);
}
static int
read_tmo(int fd, char *ptr, unsigned len, double tmo)
{
int i, j;
struct pollfd pfd;
pfd.fd = fd;
pfd.events = POLLIN;
i = poll(&pfd, 1, (int)(tmo * 1e3));
if (i == 0) {
errno = ETIMEDOUT;
return (-1);
}
for (j = 0; len > 0; ) {
i = read(fd, ptr, len);
if (i < 0)
return (i);
if (i == 0)
break;
len -= i;
ptr += i;
j += i;
}
return (j);
}
int
cli_readres(int fd, unsigned *status, char **ptr, double tmo)
{
char res[CLI_LINE0_LEN]; /* For NUL */
int i, j;
unsigned u, v;
char *p;
i = read_tmo(fd, res, CLI_LINE0_LEN, tmo);
if (i != CLI_LINE0_LEN) {
if (status != NULL)
*status = CLIS_COMMS;
if (ptr != NULL)
*ptr = strdup("CLI communication error");
return (1);
}
assert(i == CLI_LINE0_LEN);
assert(res[3] == ' ');
assert(res[CLI_LINE0_LEN - 1] == '\n');
res[CLI_LINE0_LEN - 1] = '\0';
j = sscanf(res, "%u %u\n", &u, &v);
assert(j == 2);
if (status != NULL)
*status = u;
p = malloc(v + 1);
assert(p != NULL);
i = read_tmo(fd, p, v + 1, tmo);
if (i < 0) {
free(p);
return (i);
}
assert(i == v + 1);
assert(p[v] == '\n');
p[v] = '\0';
if (ptr == NULL)
free(p);
else
*ptr = p;
return (0);
}
/*--------------------------------------------------------------------*/
void
cli_func_ping(struct cli *cli, char **av, void *priv)
{
time_t t;
(void)priv;
(void)av;
t = time(NULL);
cli_out(cli, "PONG %ld", t);
}
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