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/*
* Copyright (C) 2009 Sony Computer Entertainment Inc.
* Copyright 2009 Sony Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#include "discover/user-event.h"
#if defined(DEBUG)
#define DBG(_args...) do {fprintf(stderr, _args); fflush(stderr); } while (0)
#else
static inline int __attribute__ ((format (printf, 1, 2))) DBG(
__attribute__((unused)) const char *fmt, ...) {return 0; }
#endif
static void print_version(void)
{
printf("pb-event (" PACKAGE_NAME ") " PACKAGE_VERSION "\n");
}
static void print_usage(void)
{
print_version();
printf(
"Usage: pb-event [-h] [event...]\n"
"\n"
" Send a single petitboot user event to the petitboot discover server.\n"
" Events can be read from stdin, or provided on the command line.\n"
" User events must have the following format:\n"
"\n"
" (add|remove|boot|sync)@device-id [name=value] [image=value] [args=value]\n"
"\n"
" When read from stdin, components are separated by NUL chars\n"
"\n"
"Examples:\n"
"\n"
" args:\n"
" pb-event add@/net/eth0 name=netboot image=tftp://192.168.1.10/vmlinux\n"
" pb-event remove@/net/eth0\n"
"\n"
" stdin:\n"
" printf 'add@/net/eth0\\0name=netboot\\0image=tftp://10.0.0.2/vmlinux\\0' \\\n"
" | pb-event\n"
" printf 'remove@/net/eth0\\0' | pb-event\n"
"\n");
}
static const char *err_max_size = "pb-event: message too large "
"(%zu byte max)\n";
static ssize_t parse_event_args(int n, char * const * args,
char *buf, size_t max_len)
{
ssize_t arg_len, total_len;
const char *arg;
int i;
total_len = 0;
for (i = 0; i < n; i++) {
arg = args[i];
arg_len = strlen(arg);
if (total_len + (size_t)i + 1 > max_len) {
fprintf(stderr, err_max_size, max_len);
return -1;
}
memcpy(buf + total_len, arg, arg_len);
total_len += arg_len;
buf[total_len] = '\0';
total_len++;
}
return total_len;
}
static ssize_t parse_event_file(FILE *filp, char *buf, size_t max_len)
{
int len;
len = fread(buf, 1, max_len, filp);
if (!feof(filp)) {
fprintf(stderr, err_max_size, max_len);
return -1;
}
if (!len)
return -1;
return len;
}
static int send_event(char *buf, ssize_t len)
{
struct sockaddr_un addr;
int sd, i;
sd = socket(PF_UNIX, SOCK_DGRAM, 0);
if (sd < 0)
err(EXIT_FAILURE, "socket");
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, PBOOT_USER_EVENT_SOCKET);
for (i = 10; i; i--) {
ssize_t sent = sendto(sd, buf, len, 0,
(struct sockaddr *)&addr, SUN_LEN(&addr));
if (sent == len)
break;
DBG("pb-event: waiting for server %d\n", i);
sleep(1);
}
close(sd);
if (!i)
err(EXIT_FAILURE, "send");
DBG("pb-event: wrote %zu bytes\n", len);
return 0;
}
int main(int argc, char *argv[])
{
char buf[PBOOT_USER_EVENT_SIZE];
ssize_t len;
if (argc >= 2 && !strcmp(argv[1], "-h")) {
print_usage();
return EXIT_SUCCESS;
}
if (argc > 1) {
len = parse_event_args(argc - 1, argv + 1,
buf, sizeof(buf));
} else {
len = parse_event_file(stdin, buf, sizeof(buf));
}
if (len < 0)
return EXIT_FAILURE;
send_event(buf, len);
return EXIT_SUCCESS;
}
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