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-rw-r--r--networking/udhcp/script.c283
1 files changed, 0 insertions, 283 deletions
diff --git a/networking/udhcp/script.c b/networking/udhcp/script.c
deleted file mode 100644
index 400fd2b..0000000
--- a/networking/udhcp/script.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/* script.c
- *
- * Functions to call the DHCP client notification scripts
- *
- * Russ Dill <Russ.Dill@asu.edu> July 2001
- *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
- */
-
-#include "common.h"
-#include "dhcpc.h"
-#include "options.h"
-
-
-/* get a rough idea of how long an option will be (rounding up...) */
-static const uint8_t len_of_option_as_string[] = {
- [OPTION_IP] = sizeof("255.255.255.255 "),
- [OPTION_IP_PAIR] = sizeof("255.255.255.255 ") * 2,
- [OPTION_STATIC_ROUTES]= sizeof("255.255.255.255/32 255.255.255.255 "),
- [OPTION_STRING] = 1,
-#if ENABLE_FEATURE_UDHCP_RFC3397
- [OPTION_STR1035] = 1,
-#endif
- [OPTION_BOOLEAN] = sizeof("yes "),
- [OPTION_U8] = sizeof("255 "),
- [OPTION_U16] = sizeof("65535 "),
- [OPTION_S16] = sizeof("-32768 "),
- [OPTION_U32] = sizeof("4294967295 "),
- [OPTION_S32] = sizeof("-2147483684 "),
-};
-
-
-/* note: ip is a pointer to an IP in network order, possibly misaliged */
-static int sprint_nip(char *dest, const char *pre, const uint8_t *ip)
-{
- return sprintf(dest, "%s%u.%u.%u.%u", pre, ip[0], ip[1], ip[2], ip[3]);
-}
-
-
-/* really simple implementation, just count the bits */
-static int mton(uint32_t mask)
-{
- int i = 0;
- mask = ntohl(mask); /* 111110000-like bit pattern */
- while (mask) {
- i++;
- mask <<= 1;
- }
- return i;
-}
-
-
-/* Create "opt_name=opt_value" string */
-static NOINLINE char *xmalloc_optname_optval(uint8_t *option, const struct dhcp_option *type_p, const char *opt_name)
-{
- unsigned upper_length;
- int len, type, optlen;
- uint16_t val_u16;
- int16_t val_s16;
- uint32_t val_u32;
- int32_t val_s32;
- char *dest, *ret;
-
- /* option points to OPT_DATA, need to go back and get OPT_LEN */
- len = option[OPT_LEN - OPT_DATA];
- type = type_p->flags & OPTION_TYPE_MASK;
- optlen = dhcp_option_lengths[type];
- upper_length = len_of_option_as_string[type] * (len / optlen);
-
- dest = ret = xmalloc(upper_length + strlen(opt_name) + 2);
- dest += sprintf(ret, "%s=", opt_name);
-
- while (len >= optlen) {
- switch (type) {
- case OPTION_IP_PAIR:
- dest += sprint_nip(dest, "", option);
- *dest++ = '/';
- option += 4;
- optlen = 4;
- case OPTION_IP:
- dest += sprint_nip(dest, "", option);
-// TODO: it can be a list only if (type_p->flags & OPTION_LIST).
-// Should we bail out/warn if we see multi-ip option which is
-// not allowed to be such? For example, DHCP_BROADCAST...
- break;
- case OPTION_BOOLEAN:
- dest += sprintf(dest, *option ? "yes" : "no");
- break;
- case OPTION_U8:
- dest += sprintf(dest, "%u", *option);
- break;
- case OPTION_U16:
- move_from_unaligned16(val_u16, option);
- dest += sprintf(dest, "%u", ntohs(val_u16));
- break;
- case OPTION_S16:
- move_from_unaligned16(val_s16, option);
- dest += sprintf(dest, "%d", ntohs(val_s16));
- break;
- case OPTION_U32:
- move_from_unaligned32(val_u32, option);
- dest += sprintf(dest, "%lu", (unsigned long) ntohl(val_u32));
- break;
- case OPTION_S32:
- move_from_unaligned32(val_s32, option);
- dest += sprintf(dest, "%ld", (long) ntohl(val_s32));
- break;
- case OPTION_STRING:
- memcpy(dest, option, len);
- dest[len] = '\0';
- return ret; /* Short circuit this case */
- case OPTION_STATIC_ROUTES: {
- /* Option binary format:
- * mask [one byte, 0..32]
- * ip [big endian, 0..4 bytes depending on mask]
- * router [big endian, 4 bytes]
- * may be repeated
- *
- * We convert it to a string "IP/MASK ROUTER IP2/MASK2 ROUTER2"
- */
- const char *pfx = "";
-
- while (len >= 1 + 4) { /* mask + 0-byte ip + router */
- uint32_t nip;
- uint8_t *p;
- unsigned mask;
- int bytes;
-
- mask = *option++;
- if (mask > 32)
- break;
- len--;
-
- nip = 0;
- p = (void*) &nip;
- bytes = (mask + 7) / 8; /* 0 -> 0, 1..8 -> 1, 9..16 -> 2 etc */
- while (--bytes >= 0) {
- *p++ = *option++;
- len--;
- }
- if (len < 4)
- break;
-
- /* print ip/mask */
- dest += sprint_nip(dest, pfx, (void*) &nip);
- pfx = " ";
- dest += sprintf(dest, "/%u ", mask);
- /* print router */
- dest += sprint_nip(dest, "", option);
- option += 4;
- len -= 4;
- }
-
- return ret;
- }
-#if ENABLE_FEATURE_UDHCP_RFC3397
- case OPTION_STR1035:
- /* unpack option into dest; use ret for prefix (i.e., "optname=") */
- dest = dname_dec(option, len, ret);
- if (dest) {
- free(ret);
- return dest;
- }
- /* error. return "optname=" string */
- return ret;
-#endif
- }
- option += optlen;
- len -= optlen;
- if (len <= 0)
- break;
- *dest++ = ' ';
- *dest = '\0';
- }
- return ret;
-}
-
-
-/* put all the parameters into the environment */
-static char **fill_envp(struct dhcp_packet *packet)
-{
- int num_options = 0;
- int i;
- char **envp, **curr;
- const char *opt_name;
- uint8_t *temp;
- uint8_t over = 0;
-
- if (packet) {
- 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_nip)
- num_options++;
- temp = get_option(packet, DHCP_OPTION_OVERLOAD);
- if (temp)
- over = *temp;
- if (!(over & FILE_FIELD) && packet->file[0])
- num_options++;
- if (!(over & SNAME_FIELD) && packet->sname[0])
- num_options++;
- }
-
- curr = envp = xzalloc(sizeof(char *) * (num_options + 3));
- *curr = xasprintf("interface=%s", client_config.interface);
- putenv(*curr++);
-
- if (packet == NULL)
- return envp;
-
- *curr = xmalloc(sizeof("ip=255.255.255.255"));
- sprint_nip(*curr, "ip=", (uint8_t *) &packet->yiaddr);
- putenv(*curr++);
-
- opt_name = dhcp_option_strings;
- i = 0;
- while (*opt_name) {
- temp = get_option(packet, dhcp_options[i].code);
- if (!temp)
- goto next;
- *curr = xmalloc_optname_optval(temp, &dhcp_options[i], opt_name);
- putenv(*curr++);
-
- /* Fill in a subnet bits option for things like /24 */
- if (dhcp_options[i].code == DHCP_SUBNET) {
- uint32_t subnet;
- move_from_unaligned32(subnet, temp);
- *curr = xasprintf("mask=%d", mton(subnet));
- putenv(*curr++);
- }
- next:
- opt_name += strlen(opt_name) + 1;
- i++;
- }
- if (packet->siaddr_nip) {
- *curr = xmalloc(sizeof("siaddr=255.255.255.255"));
- sprint_nip(*curr, "siaddr=", (uint8_t *) &packet->siaddr_nip);
- putenv(*curr++);
- }
- if (!(over & FILE_FIELD) && packet->file[0]) {
- /* watch out for invalid packets */
- *curr = xasprintf("boot_file=%."DHCP_PKT_FILE_LEN_STR"s", packet->file);
- putenv(*curr++);
- }
- if (!(over & SNAME_FIELD) && packet->sname[0]) {
- /* watch out for invalid packets */
- *curr = xasprintf("sname=%."DHCP_PKT_SNAME_LEN_STR"s", packet->sname);
- putenv(*curr++);
- }
- return envp;
-}
-
-
-/* Call a script with a par file and env vars */
-void FAST_FUNC udhcp_run_script(struct dhcp_packet *packet, const char *name)
-{
- char **envp, **curr;
- char *argv[3];
-
- if (client_config.script == NULL)
- return;
-
- envp = fill_envp(packet);
-
- /* call script */
- log1("Executing %s %s", client_config.script, name);
- argv[0] = (char*) client_config.script;
- argv[1] = (char*) name;
- argv[2] = NULL;
- spawn_and_wait(argv);
-
- for (curr = envp; *curr; curr++) {
- log2(" %s", *curr);
- bb_unsetenv(*curr);
- free(*curr);
- }
- free(envp);
-}
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