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-rw-r--r--networking/udhcp/script.c234
1 files changed, 0 insertions, 234 deletions
diff --git a/networking/udhcp/script.c b/networking/udhcp/script.c
deleted file mode 100644
index b6b0e0d59..000000000
--- a/networking/udhcp/script.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/* 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.
- */
-
-#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"
-
-/* get a rough idea of how long an option will be (rounding up...) */
-static const int max_option_length[] = {
- [OPTION_IP] = sizeof("255.255.255.255 "),
- [OPTION_IP_PAIR] = sizeof("255.255.255.255 ") * 2,
- [OPTION_STRING] = 1,
- [OPTION_BOOLEAN] = sizeof("yes "),
- [OPTION_U8] = sizeof("255 "),
- [OPTION_U16] = sizeof("65535 "),
- [OPTION_S16] = sizeof("-32768 "),
- [OPTION_U32] = sizeof("4294967295 "),
- [OPTION_S32] = sizeof("-2147483684 "),
-};
-
-
-static inline int upper_length(int length, int opt_index)
-{
- return max_option_length[opt_index] *
- (length / option_lengths[opt_index]);
-}
-
-
-static int sprintip(char *dest, char *pre, uint8_t *ip)
-{
- return sprintf(dest, "%s%d.%d.%d.%d", pre, ip[0], ip[1], ip[2], ip[3]);
-}
-
-
-/* really simple implementation, just count the bits */
-static int mton(struct in_addr *mask)
-{
- int i;
- unsigned long bits = ntohl(mask->s_addr);
- /* too bad one can't check the carry bit, etc in c bit
- * shifting */
- for (i = 0; i < 32 && !((bits >> i) & 1); i++);
- return 32 - i;
-}
-
-
-/* Fill dest with the text of option 'option'. */
-static void fill_options(char *dest, uint8_t *option, struct dhcp_option *type_p)
-{
- int type, optlen;
- uint16_t val_u16;
- int16_t val_s16;
- uint32_t val_u32;
- int32_t val_s32;
- int len = option[OPT_LEN - 2];
-
- dest += sprintf(dest, "%s=", type_p->name);
-
- type = type_p->flags & TYPE_MASK;
- optlen = option_lengths[type];
- for(;;) {
- switch (type) {
- case OPTION_IP_PAIR:
- dest += sprintip(dest, "", option);
- *(dest++) = '/';
- option += 4;
- optlen = 4;
- case OPTION_IP: /* Works regardless of host byte order. */
- dest += sprintip(dest, "", option);
- break;
- case OPTION_BOOLEAN:
- dest += sprintf(dest, *option ? "yes" : "no");
- break;
- case OPTION_U8:
- dest += sprintf(dest, "%u", *option);
- break;
- case OPTION_U16:
- memcpy(&val_u16, option, 2);
- dest += sprintf(dest, "%u", ntohs(val_u16));
- break;
- case OPTION_S16:
- memcpy(&val_s16, option, 2);
- dest += sprintf(dest, "%d", ntohs(val_s16));
- break;
- case OPTION_U32:
- memcpy(&val_u32, option, 4);
- dest += sprintf(dest, "%lu", (unsigned long) ntohl(val_u32));
- break;
- case OPTION_S32:
- memcpy(&val_s32, option, 4);
- dest += sprintf(dest, "%ld", (long) ntohl(val_s32));
- break;
- case OPTION_STRING:
- memcpy(dest, option, len);
- dest[len] = '\0';
- return; /* Short circuit this case */
- }
- option += optlen;
- len -= optlen;
- if (len <= 0) break;
- dest += sprintf(dest, " ");
- }
-}
-
-
-/* put all the parameters into an environment */
-static char **fill_envp(struct dhcpMessage *packet)
-{
- int num_options = 0;
- int i, j;
- char **envp;
- uint8_t *temp;
- struct in_addr subnet;
- char over = 0;
-
- if (packet == NULL)
- num_options = 0;
- else {
- for (i = 0; dhcp_options[i].code; i++)
- if (get_option(packet, dhcp_options[i].code)) {
- num_options++;
- if (dhcp_options[i].code == DHCP_SUBNET)
- num_options++; /* for mton */
- }
- if (packet->siaddr) num_options++;
- if ((temp = get_option(packet, DHCP_OPTION_OVER)))
- over = *temp;
- if (!(over & FILE_FIELD) && packet->file[0]) num_options++;
- if (!(over & SNAME_FIELD) && packet->sname[0]) num_options++;
- }
-
- envp = xcalloc(sizeof(char *), num_options + 5);
- j = 0;
- asprintf(&envp[j++], "interface=%s", client_config.interface);
- asprintf(&envp[j++], "%s=%s", "PATH",
- getenv("PATH") ? : "/bin:/usr/bin:/sbin:/usr/sbin");
- asprintf(&envp[j++], "%s=%s", "HOME", 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)))
- continue;
- envp[j] = xmalloc(upper_length(temp[OPT_LEN - 2],
- dhcp_options[i].flags & TYPE_MASK) + strlen(dhcp_options[i].name) + 2);
- fill_options(envp[j++], temp, &dhcp_options[i]);
-
- /* 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));
- }
- }
- if (packet->siaddr) {
- envp[j] = xmalloc(sizeof("siaddr=255.255.255.255"));
- sprintip(envp[j++], "siaddr=", (uint8_t *) &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);
- }
- 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);
- }
- return envp;
-}
-
-
-/* Call a script with a par file and env vars */
-void 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);
-
- envp = fill_envp(packet);
- /* call script */
- pid = vfork();
- if (pid) {
- waitpid(pid, NULL, 0);
- for (curr = envp; *curr; curr++) free(*curr);
- free(envp);
- 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);
- exit(1);
- }
-}
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