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-rw-r--r--networking/udhcp/options.c172
1 files changed, 0 insertions, 172 deletions
diff --git a/networking/udhcp/options.c b/networking/udhcp/options.c
deleted file mode 100644
index d394b4c..0000000
--- a/networking/udhcp/options.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * options.c -- DHCP server option packet tools
- * Rewrite by Russ Dill <Russ.Dill@asu.edu> July 2001
- */
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "common.h"
-#include "dhcpd.h"
-#include "options.h"
-#include "files.h"
-
-
-/* supported options are easily added here */
-struct dhcp_option dhcp_options[] = {
- /* name[10] flags code */
- {"subnet", OPTION_IP | OPTION_REQ, 0x01},
- {"timezone", OPTION_S32, 0x02},
- {"router", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x03},
- {"timesvr", OPTION_IP | OPTION_LIST, 0x04},
- {"namesvr", OPTION_IP | OPTION_LIST, 0x05},
- {"dns", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x06},
- {"logsvr", OPTION_IP | OPTION_LIST, 0x07},
- {"cookiesvr", OPTION_IP | OPTION_LIST, 0x08},
- {"lprsvr", OPTION_IP | OPTION_LIST, 0x09},
- {"hostname", OPTION_STRING | OPTION_REQ, 0x0c},
- {"bootsize", OPTION_U16, 0x0d},
- {"domain", OPTION_STRING | OPTION_REQ, 0x0f},
- {"swapsvr", OPTION_IP, 0x10},
- {"rootpath", OPTION_STRING, 0x11},
- {"ipttl", OPTION_U8, 0x17},
- {"mtu", OPTION_U16, 0x1a},
- {"broadcast", OPTION_IP | OPTION_REQ, 0x1c},
- {"nisdomain", OPTION_STRING | OPTION_REQ, 0x28},
- {"nissrv", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x29},
- {"ntpsrv", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x2a},
- {"wins", OPTION_IP | OPTION_LIST, 0x2c},
- {"requestip", OPTION_IP, 0x32},
- {"lease", OPTION_U32, 0x33},
- {"dhcptype", OPTION_U8, 0x35},
- {"serverid", OPTION_IP, 0x36},
- {"message", OPTION_STRING, 0x38},
- {"tftp", OPTION_STRING, 0x42},
- {"bootfile", OPTION_STRING, 0x43},
- {"", 0x00, 0x00}
-};
-
-/* Lengths of the different option types */
-int option_lengths[] = {
- [OPTION_IP] = 4,
- [OPTION_IP_PAIR] = 8,
- [OPTION_BOOLEAN] = 1,
- [OPTION_STRING] = 1,
- [OPTION_U8] = 1,
- [OPTION_U16] = 2,
- [OPTION_S16] = 2,
- [OPTION_U32] = 4,
- [OPTION_S32] = 4
-};
-
-
-/* get an option with bounds checking (warning, not aligned). */
-uint8_t *get_option(struct dhcpMessage *packet, int code)
-{
- int i, length;
- uint8_t *optionptr;
- int over = 0, done = 0, curr = OPTION_FIELD;
-
- optionptr = packet->options;
- i = 0;
- length = 308;
- while (!done) {
- if (i >= length) {
- LOG(LOG_WARNING, "bogus packet, option fields too long.");
- return NULL;
- }
- if (optionptr[i + OPT_CODE] == code) {
- if (i + 1 + optionptr[i + OPT_LEN] >= length) {
- LOG(LOG_WARNING, "bogus packet, option fields too long.");
- return NULL;
- }
- return optionptr + i + 2;
- }
- switch (optionptr[i + OPT_CODE]) {
- case DHCP_PADDING:
- i++;
- break;
- case DHCP_OPTION_OVER:
- if (i + 1 + optionptr[i + OPT_LEN] >= length) {
- LOG(LOG_WARNING, "bogus packet, option fields too long.");
- return NULL;
- }
- over = optionptr[i + 3];
- i += optionptr[OPT_LEN] + 2;
- break;
- case DHCP_END:
- if (curr == OPTION_FIELD && over & FILE_FIELD) {
- optionptr = packet->file;
- i = 0;
- length = 128;
- curr = FILE_FIELD;
- } else if (curr == FILE_FIELD && over & SNAME_FIELD) {
- optionptr = packet->sname;
- i = 0;
- length = 64;
- curr = SNAME_FIELD;
- } else done = 1;
- break;
- default:
- i += optionptr[OPT_LEN + i] + 2;
- }
- }
- return NULL;
-}
-
-
-/* return the position of the 'end' option (no bounds checking) */
-int end_option(uint8_t *optionptr)
-{
- int i = 0;
-
- while (optionptr[i] != DHCP_END) {
- if (optionptr[i] == DHCP_PADDING) i++;
- else i += optionptr[i + OPT_LEN] + 2;
- }
- return i;
-}
-
-
-/* add an option string to the options (an option string contains an option code,
- * length, then data) */
-int add_option_string(uint8_t *optionptr, uint8_t *string)
-{
- int end = end_option(optionptr);
-
- /* end position + string length + option code/length + end option */
- if (end + string[OPT_LEN] + 2 + 1 >= 308) {
- LOG(LOG_ERR, "Option 0x%02x did not fit into the packet!", string[OPT_CODE]);
- return 0;
- }
- DEBUG(LOG_INFO, "adding option 0x%02x", string[OPT_CODE]);
- memcpy(optionptr + end, string, string[OPT_LEN] + 2);
- optionptr[end + string[OPT_LEN] + 2] = DHCP_END;
- return string[OPT_LEN] + 2;
-}
-
-
-/* add a one to four byte option to a packet */
-int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data)
-{
- struct dhcp_option *dh;
-
- for (dh=dhcp_options; dh->code; dh++) {
- if (dh->code == code) {
- uint8_t option[6], len;
-
- option[OPT_CODE] = code;
- len = option_lengths[dh->flags & TYPE_MASK];
- option[OPT_LEN] = len;
- if (__BYTE_ORDER == __BIG_ENDIAN)
- data <<= 8 * (4 - len);
- /* This memcpy is for broken processors which can't
- * handle a simple unaligned 32-bit assignment */
- memcpy(&option[OPT_DATA], &data, 4);
- return add_option_string(optionptr, option);
- }
- }
-
- DEBUG(LOG_ERR, "Could not add option 0x%02x", code);
- return 0;
-}