mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-22 20:44:05 +02:00
f4ca3aed63
- PROTOCOL: corrected obsolete part of WAIT behaviour - PROTOCOL: mention that WAIT 0 waits forever - atrf-proxy.c (cmd_more): don't convert WAIT argument 0 to 1
391 lines
8.0 KiB
C
391 lines
8.0 KiB
C
/*
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* atrf-proxy/atrf-proxy.c - ATRF network proxy
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*
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* Written 2011 by Werner Almesberger
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* Copyright 2011 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <strings.h> /* for strcasecmp */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "atrf.h"
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#include "netio.h"
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#include "daemon.h"
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#define DEFAULT_PORT 0x1540 /* 5440 */
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static int verbose = 0;
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static int get_num(struct netio *netio, int last, int *ret)
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{
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char buf[10];
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ssize_t got;
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unsigned long n;
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char *end;
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got = netio_read_until(netio,
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last ? "\n" : " ", buf, sizeof(buf), NULL);
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if (got < 0) {
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*ret = -1;
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return -1;
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}
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buf[got] = 0;
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n = strtoul(buf, &end, 0);
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if (*end) {
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*ret = netio_printf(netio, "-bad number\n");
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return -1;
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}
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/* @@@ check against INT_MAX */
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return n;
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}
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static int cmd_two(struct atrf_dsc *dsc, struct netio *netio, const char *cmd)
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{
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int n, ret;
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n = get_num(netio, 0, &ret);
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if (n < 0)
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return ret;
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if (n > 255)
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return netio_printf(netio, "-bad argument\n");
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if (!strcasecmp(cmd, "set")) {
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int val;
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val = get_num(netio, 1, &ret);
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if (val < 0)
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return ret;
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if (val > 255)
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return netio_printf(netio, "-bad argument\n");
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atrf_reg_write(dsc, n, val);
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if (atrf_error(dsc))
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return netio_printf(netio, "-I/O error\n");
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return netio_printf(netio, "+\n");
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}
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if (!strcasecmp(cmd, "write")) {
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uint8_t *tmp;
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ssize_t got;
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if (n > 128)
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return netio_printf(netio, "-bad argument\n");
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tmp = malloc(n+1);
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if (!tmp)
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return netio_printf(netio, "-out of memory\n");
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got = netio_read(netio, tmp, n+1);
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if (got != n+1) {
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free(tmp);
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return -1;
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}
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if (tmp[n] != '\n') {
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free(tmp);
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return netio_printf(netio, "-unterminated command\n");
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}
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atrf_buf_write(dsc, tmp, n);
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free(tmp);
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if (atrf_error(dsc))
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return netio_printf(netio, "-I/O error\n");
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return netio_printf(netio, "+\n");
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}
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if (!strcasecmp(cmd, "setram")) {
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int val;
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val = get_num(netio, 1, &ret);
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if (val < 0)
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return ret;
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if (val > 255)
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return netio_printf(netio, "-bad argument\n");
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atrf_sram_write(dsc, n, val);
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if (atrf_error(dsc))
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return netio_printf(netio, "-I/O error\n");
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return netio_printf(netio, "+\n");
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}
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if (!strcasecmp(cmd, "slp_tr")) {
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int val;
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if (n > 1)
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return netio_printf(netio, "-bad argument\n");
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val = get_num(netio, 1, &ret);
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if (val < 0)
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return ret;
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if (val > 1)
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return netio_printf(netio, "-bad argument\n");
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if (atrf_slp_tr(dsc, n, val) < 0)
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return netio_printf(netio, "-I/O error\n");
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return netio_printf(netio, "+\n");
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}
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abort();
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}
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static int cmd_more(struct atrf_dsc *dsc, struct netio *netio, const char *cmd)
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{
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int n, ret;
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if (!strcasecmp(cmd, "set"))
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return cmd_two(dsc, netio, cmd);
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if (!strcasecmp(cmd, "setram"))
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return cmd_two(dsc, netio, cmd);
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if (!strcasecmp(cmd, "write"))
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return cmd_two(dsc, netio, cmd);
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if (!strcasecmp(cmd, "slp_tr"))
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return cmd_two(dsc, netio, cmd);
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n = get_num(netio, 1, &ret);
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if (n < 0)
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return ret;
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if (!strcasecmp(cmd, "clkm")) {
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if (n > 16)
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return netio_printf(netio, "-bad argument\n");
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if (atrf_set_clkm(dsc, n) < 0)
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return netio_printf(netio, "-error\n");
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return netio_printf(netio, "+\n");
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}
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if (!strcasecmp(cmd, "get")) {
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uint8_t res;
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if (n > 255)
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return netio_printf(netio, "-bad argument\n");
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res = atrf_reg_read(dsc, n);
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if (atrf_error(dsc))
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return netio_printf(netio, "-I/O error\n");
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return netio_printf(netio, "+0x%02x\n", res);
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}
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if (!strcasecmp(cmd, "wait")) {
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int res;
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res = atrf_interrupt_wait(dsc, n);
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if (atrf_error(dsc))
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return netio_printf(netio, "-I/O error\n");
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return netio_printf(netio, "+0x%02x\n", res);
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}
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if (!strcasecmp(cmd, "getram")) {
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uint8_t res;
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if (n > 255)
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return netio_printf(netio, "-bad argument\n");
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res = atrf_sram_read(dsc, n);
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if (atrf_error(dsc))
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return netio_printf(netio, "-I/O error\n");
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return netio_printf(netio, "+0x%02x\n", res);
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}
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return netio_printf(netio, "-unrecognized command\n");
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}
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static int cmd_zero(struct atrf_dsc *dsc, struct netio *netio, const char *cmd)
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{
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if (!strcasecmp(cmd, "spec")) {
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const char *spec = atrf_driver_spec(dsc, 1);
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if (spec)
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return netio_printf(netio, "+%s\n", spec);
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else
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return netio_printf(netio,
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"-can't obtain specification\n");
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}
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if (!strcasecmp(cmd, "reset")) {
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atrf_reset(dsc);
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return netio_printf(netio, "+\n");
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}
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if (!strcasecmp(cmd, "reset_rf")) {
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atrf_reset_rf(dsc);
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return netio_printf(netio, "+\n");
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}
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if (!strcasecmp(cmd, "test")) {
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atrf_test_mode(dsc);
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return netio_printf(netio, "+\n");
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}
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if (!strcasecmp(cmd, "read")) {
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uint8_t buf[128+1]; /* one more for the trailing \n */
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int got;
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got = atrf_buf_read(dsc, buf, sizeof(buf));
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if (got < 0)
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return netio_printf(netio, "-I/O error\n");
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if (netio_printf(netio, "+%d ", got) < 0)
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return -1;
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buf[got] = '\n';
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return netio_write(netio, buf, got+1);
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}
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return netio_printf(netio, "-unrecognized command\n");
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}
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static void session(const char *driver, struct netio *netio)
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{
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struct atrf_dsc *dsc;
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dsc = atrf_open(driver);
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if (!dsc) {
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netio_printf(netio, "-unable to open driver\n");
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return;
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}
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if (netio_printf(netio,
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"+connected to %s\n", driver ? driver : "default") < 0)
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goto done;
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while (1) {
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char buf[100];
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ssize_t got;
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char last;
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got = netio_read_until(netio, " \n", buf, sizeof(buf), &last);
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if (got < 0)
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break;
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if (!got && last) {
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netio_printf(netio, "-empty input\n");
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continue;
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}
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buf[got] = 0;
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switch (last) {
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case ' ':
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if (cmd_more(dsc, netio, buf) < 0)
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goto done;
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break;
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case '\n':
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if (cmd_zero(dsc, netio, buf) < 0)
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goto done;
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break;
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case 0:
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goto done;
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default:
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abort();
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}
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}
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done:
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atrf_close(dsc);
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}
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static void loop(const char *driver, int port)
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{
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struct sockaddr_in addr;
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int s;
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int one = 1;
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s = socket(PF_INET, SOCK_STREAM, 0);
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if (s < 0) {
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perror("socket");
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exit(1);
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}
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if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0) {
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perror("setsockopt");
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exit(1);
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}
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memset(&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_port = htons(port);
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if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
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perror("bind");
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exit(1);
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}
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if (listen(s, 0) < 0) {
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perror("listen");
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exit(1);
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}
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while (1) {
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socklen_t len = sizeof(addr);
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int s2;
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struct netio *netio;
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s2 = accept(s, (struct sockaddr *) &addr, &len);
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if (s2 < 0) {
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perror("accept");
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continue;
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}
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if (verbose)
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fprintf(stderr, "%s:%u\n", inet_ntoa(addr.sin_addr),
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ntohs(addr.sin_port));
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netio = netio_open(s2);
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if (netio) {
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session(driver, netio);
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netio_close(netio);
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} else {
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if (close(s2) < 0)
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perror("close");
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}
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}
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}
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static void usage(const char *name)
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{
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fprintf(stderr,
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"usage: %s [-b] [-d driver[:arg]] [-v ...] [port]\n\n"
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" port listen on the specified port (default: %d)\n\n"
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" -b background the process after initialization\n"
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" -d driver[:arg] use the specified driver (default: %s)\n"
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" -v ... increase verbosity level\n"
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, name, DEFAULT_PORT, atrf_default_driver_name());
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exit(1);
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}
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int main(int argc, char **argv)
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{
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unsigned long port = DEFAULT_PORT;
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const char *driver = NULL;
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int foreground = 1;
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char *end;
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int c;
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while ((c = getopt(argc, argv, "bd:v")) != EOF)
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switch (c) {
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case 'b':
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foreground = 0;
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break;
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case 'd':
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driver = optarg;
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break;
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case 'v':
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verbose++;
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netio_verbose++;
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break;
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default:
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usage(*argv);
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}
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switch (argc-optind) {
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case 0:
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break;
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case 1:
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port = strtoul(argv[optind], &end, 0);
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if (*end || !port || port > 0xffff)
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usage(*argv);
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break;
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default:
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usage(*argv);
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}
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if (foreground || !daemonize())
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loop(driver, port);
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return 0;
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}
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