+/* vi: set sw=4 ts=4: */
/* script.c
*
* Functions to call the DHCP client notification scripts
*
* Russ Dill <Russ.Dill@asu.edu> July 2001
*
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <string.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-
#include "common.h"
-#include "options.h"
#include "dhcpd.h"
#include "dhcpc.h"
-#include "script.h"
+#include "options.h"
+
/* get a rough idea of how long an option will be (rounding up...) */
static const int max_option_length[] = {
/* Fill dest with the text of option 'option'. */
-static void fill_options(char *dest, uint8_t *option, struct dhcp_option *type_p)
+static void fill_options(char *dest, uint8_t *option,
+ const struct dhcp_option *type_p)
{
int type, optlen;
uint16_t val_u16;
type = type_p->flags & TYPE_MASK;
optlen = option_lengths[type];
- for(;;) {
+ for (;;) {
switch (type) {
case OPTION_IP_PAIR:
dest += sprintip(dest, "", option);
envp = xzalloc(sizeof(char *) * (num_options + 5));
j = 0;
- asprintf(&envp[j++], "interface=%s", client_config.interface);
- asprintf(&envp[j++], "%s=%s", "PATH",
+ envp[j++] = xasprintf("interface=%s", client_config.interface);
+ envp[j++] = xasprintf("PATH=%s",
getenv("PATH") ? : "/bin:/usr/bin:/sbin:/usr/sbin");
- asprintf(&envp[j++], "%s=%s", "HOME", getenv("HOME") ? : "/");
+ envp[j++] = xasprintf("HOME=%s", getenv("HOME") ? : "/");
if (packet == NULL) return envp;
envp[j] = xmalloc(sizeof("ip=255.255.255.255"));
sprintip(envp[j++], "ip=", (uint8_t *) &packet->yiaddr);
-
for (i = 0; dhcp_options[i].code; i++) {
- if (!(temp = get_option(packet, dhcp_options[i].code)))
+ temp = get_option(packet, dhcp_options[i].code);
+ if (!temp)
continue;
envp[j] = xmalloc(upper_length(temp[OPT_LEN - 2],
dhcp_options[i].flags & TYPE_MASK) + strlen(dhcp_options[i].name) + 2);
/* Fill in a subnet bits option for things like /24 */
if (dhcp_options[i].code == DHCP_SUBNET) {
memcpy(&subnet, temp, 4);
- asprintf(&envp[j++], "mask=%d", mton(&subnet));
+ envp[j++] = xasprintf("mask=%d", mton(&subnet));
}
}
if (packet->siaddr) {
if (!(over & FILE_FIELD) && packet->file[0]) {
/* watch out for invalid packets */
packet->file[sizeof(packet->file) - 1] = '\0';
- asprintf(&envp[j++], "boot_file=%s", packet->file);
+ envp[j++] = xasprintf("boot_file=%s", packet->file);
}
if (!(over & SNAME_FIELD) && packet->sname[0]) {
/* watch out for invalid packets */
packet->sname[sizeof(packet->sname) - 1] = '\0';
- asprintf(&envp[j++], "sname=%s", packet->sname);
+ envp[j++] = xasprintf("sname=%s", packet->sname);
}
return envp;
}
/* Call a script with a par file and env vars */
-void run_script(struct dhcpMessage *packet, const char *name)
+void udhcp_run_script(struct dhcpMessage *packet, const char *name)
{
int pid;
char **envp, **curr;
if (client_config.script == NULL)
return;
- DEBUG(LOG_INFO, "vforking and execle'ing %s", client_config.script);
+ DEBUG("vfork'ing and execle'ing %s", client_config.script);
envp = fill_envp(packet);
/* call script */
return;
} else if (pid == 0) {
/* close fd's? */
-
/* exec script */
execle(client_config.script, client_config.script,
name, NULL, envp);
- LOG(LOG_ERR, "script %s failed: %m", client_config.script);
+ bb_perror_msg("script %s failed", client_config.script);
exit(1);
}
}