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-rw-r--r--networking/udhcp/options.c262
1 files changed, 0 insertions, 262 deletions
diff --git a/networking/udhcp/options.c b/networking/udhcp/options.c
deleted file mode 100644
index af3c217e8..000000000
--- a/networking/udhcp/options.c
+++ /dev/null
@@ -1,262 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * options.c -- DHCP server option packet tools
- * Rewrite by Russ Dill <Russ.Dill@asu.edu> July 2001
- *
- * Licensed under GPLv2, see file LICENSE in this tarball for details.
- */
-
-#include "common.h"
-
-
-/* Supported options are easily added here.
- * See RFC2132 for more options.
- * OPTION_REQ: these options are requested by udhcpc (unless -o).
- */
-const struct dhcp_option dhcp_options[] = {
- /* flags code */
- { OPTION_IP | OPTION_REQ, 0x01 }, /* DHCP_SUBNET */
- { OPTION_S32 , 0x02 }, /* DHCP_TIME_OFFSET */
- { OPTION_IP | OPTION_LIST | OPTION_REQ, 0x03 }, /* DHCP_ROUTER */
-// { OPTION_IP | OPTION_LIST , 0x04 }, /* DHCP_TIME_SERVER */
-// { OPTION_IP | OPTION_LIST , 0x05 }, /* DHCP_NAME_SERVER */
- { OPTION_IP | OPTION_LIST | OPTION_REQ, 0x06 }, /* DHCP_DNS_SERVER */
-// { OPTION_IP | OPTION_LIST , 0x07 }, /* DHCP_LOG_SERVER */
-// { OPTION_IP | OPTION_LIST , 0x08 }, /* DHCP_COOKIE_SERVER */
- { OPTION_IP | OPTION_LIST , 0x09 }, /* DHCP_LPR_SERVER */
- { OPTION_STRING | OPTION_REQ, 0x0c }, /* DHCP_HOST_NAME */
- { OPTION_U16 , 0x0d }, /* DHCP_BOOT_SIZE */
- { OPTION_STRING | OPTION_REQ, 0x0f }, /* DHCP_DOMAIN_NAME */
- { OPTION_IP , 0x10 }, /* DHCP_SWAP_SERVER */
- { OPTION_STRING , 0x11 }, /* DHCP_ROOT_PATH */
- { OPTION_U8 , 0x17 }, /* DHCP_IP_TTL */
- { OPTION_U16 , 0x1a }, /* DHCP_MTU */
- { OPTION_IP | OPTION_REQ, 0x1c }, /* DHCP_BROADCAST */
- { OPTION_STRING , 0x28 }, /* DHCP_NIS_DOMAIN */
- { OPTION_IP | OPTION_LIST , 0x29 }, /* DHCP_NIS_SERVER */
- { OPTION_IP | OPTION_LIST | OPTION_REQ, 0x2a }, /* DHCP_NTP_SERVER */
- { OPTION_IP | OPTION_LIST , 0x2c }, /* DHCP_WINS_SERVER */
- { OPTION_U32 , 0x33 }, /* DHCP_LEASE_TIME */
- { OPTION_IP , 0x36 }, /* DHCP_SERVER_ID */
- { OPTION_STRING , 0x38 }, /* DHCP_ERR_MESSAGE */
-//TODO: must be combined with 'sname' and 'file' handling:
- { OPTION_STRING , 0x42 }, /* DHCP_TFTP_SERVER_NAME */
- { OPTION_STRING , 0x43 }, /* DHCP_BOOT_FILE */
-//TODO: not a string, but a set of LASCII strings:
-// { OPTION_STRING , 0x4D }, /* DHCP_USER_CLASS */
-#if ENABLE_FEATURE_UDHCP_RFC3397
- { OPTION_STR1035 | OPTION_LIST , 0x77 }, /* DHCP_DOMAIN_SEARCH */
-#endif
- { OPTION_STATIC_ROUTES , 0x79 }, /* DHCP_STATIC_ROUTES */
- { OPTION_STRING , 0xfc }, /* DHCP_WPAD */
-
- /* Options below have no match in dhcp_option_strings[],
- * are not passed to dhcpc scripts, and cannot be specified
- * with "option XXX YYY" syntax in dhcpd config file.
- * These entries are only used internally by udhcp[cd]
- * to correctly encode options into packets.
- */
-
- { OPTION_IP , 0x32 }, /* DHCP_REQUESTED_IP */
- { OPTION_U8 , 0x35 }, /* DHCP_MESSAGE_TYPE */
- { OPTION_U16 , 0x39 }, /* DHCP_MAX_SIZE */
- { OPTION_STRING , 0x3c }, /* DHCP_VENDOR */
-//FIXME: handling of this option is not exactly correct:
- { OPTION_STRING , 0x3d }, /* DHCP_CLIENT_ID */
- { 0, 0 } /* zeroed terminating entry */
-};
-
-/* Used for converting options from incoming packets to env variables
- * for udhcpc stript, and for setting options for udhcpd via
- * "opt OPTION_NAME OPTION_VALUE" directives in udhcpd.conf file.
- */
-/* Must match dhcp_options[] order */
-const char dhcp_option_strings[] ALIGN1 =
- "subnet" "\0" /* DHCP_SUBNET */
- "timezone" "\0" /* DHCP_TIME_OFFSET */
- "router" "\0" /* DHCP_ROUTER */
-// "timesrv" "\0" /* DHCP_TIME_SERVER */
-// "namesrv" "\0" /* DHCP_NAME_SERVER */
- "dns" "\0" /* DHCP_DNS_SERVER */
-// "logsrv" "\0" /* DHCP_LOG_SERVER */
-// "cookiesrv" "\0" /* DHCP_COOKIE_SERVER */
- "lprsrv" "\0" /* DHCP_LPR_SERVER */
- "hostname" "\0" /* DHCP_HOST_NAME */
- "bootsize" "\0" /* DHCP_BOOT_SIZE */
- "domain" "\0" /* DHCP_DOMAIN_NAME */
- "swapsrv" "\0" /* DHCP_SWAP_SERVER */
- "rootpath" "\0" /* DHCP_ROOT_PATH */
- "ipttl" "\0" /* DHCP_IP_TTL */
- "mtu" "\0" /* DHCP_MTU */
- "broadcast" "\0" /* DHCP_BROADCAST */
- "nisdomain" "\0" /* DHCP_NIS_DOMAIN */
- "nissrv" "\0" /* DHCP_NIS_SERVER */
- "ntpsrv" "\0" /* DHCP_NTP_SERVER */
- "wins" "\0" /* DHCP_WINS_SERVER */
- "lease" "\0" /* DHCP_LEASE_TIME */
- "serverid" "\0" /* DHCP_SERVER_ID */
- "message" "\0" /* DHCP_ERR_MESSAGE */
- "tftp" "\0" /* DHCP_TFTP_SERVER_NAME */
- "bootfile" "\0" /* DHCP_BOOT_FILE */
-// "userclass" "\0" /* DHCP_USER_CLASS */
-#if ENABLE_FEATURE_UDHCP_RFC3397
- "search" "\0" /* DHCP_DOMAIN_SEARCH */
-#endif
-// "staticroutes" is only used to set udhcpc environment, it doesn't work
-// in udhcpd.conf since OPTION_STATIC_ROUTES is not handled yet
-// by "string->option" conversion code:
- "staticroutes" "\0"/* DHCP_STATIC_ROUTES */
- "wpad" "\0" /* DHCP_WPAD */
- ;
-
-/* Lengths of the different option types */
-const uint8_t dhcp_option_lengths[] ALIGN1 = {
- [OPTION_IP] = 4,
- [OPTION_IP_PAIR] = 8,
- [OPTION_BOOLEAN] = 1,
- [OPTION_STRING] = 1,
-#if ENABLE_FEATURE_UDHCP_RFC3397
- [OPTION_STR1035] = 1,
-#endif
- [OPTION_U8] = 1,
- [OPTION_U16] = 2,
- [OPTION_S16] = 2,
- [OPTION_U32] = 4,
- [OPTION_S32] = 4,
- /* Just like OPTION_STRING, we use minimum length here */
- [OPTION_STATIC_ROUTES] = 5,
-};
-
-
-#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 2
-static void log_option(const char *pfx, const uint8_t *opt)
-{
- if (dhcp_verbose >= 2) {
- char buf[256 * 2 + 2];
- *bin2hex(buf, (void*) (opt + OPT_DATA), opt[OPT_LEN]) = '\0';
- bb_info_msg("%s: 0x%02x %s", pfx, opt[OPT_CODE], buf);
- }
-}
-#else
-# define log_option(pfx, opt) ((void)0)
-#endif
-
-/* get an option with bounds checking (warning, result is not aligned). */
-uint8_t* FAST_FUNC udhcp_get_option(struct dhcp_packet *packet, int code)
-{
- uint8_t *optionptr;
- int len;
- int rem;
- int overload = 0;
- enum {
- FILE_FIELD101 = FILE_FIELD * 0x101,
- SNAME_FIELD101 = SNAME_FIELD * 0x101,
- };
-
- /* option bytes: [code][len][data1][data2]..[dataLEN] */
- optionptr = packet->options;
- rem = sizeof(packet->options);
- while (1) {
- if (rem <= 0) {
- bb_error_msg("bad packet, malformed option field");
- return NULL;
- }
- if (optionptr[OPT_CODE] == DHCP_PADDING) {
- rem--;
- optionptr++;
- continue;
- }
- if (optionptr[OPT_CODE] == DHCP_END) {
- if ((overload & FILE_FIELD101) == FILE_FIELD) {
- /* can use packet->file, and didn't look at it yet */
- overload |= FILE_FIELD101; /* "we looked at it" */
- optionptr = packet->file;
- rem = sizeof(packet->file);
- continue;
- }
- if ((overload & SNAME_FIELD101) == SNAME_FIELD) {
- /* can use packet->sname, and didn't look at it yet */
- overload |= SNAME_FIELD101; /* "we looked at it" */
- optionptr = packet->sname;
- rem = sizeof(packet->sname);
- continue;
- }
- break;
- }
- len = 2 + optionptr[OPT_LEN];
- rem -= len;
- if (rem < 0)
- continue; /* complain and return NULL */
-
- if (optionptr[OPT_CODE] == code) {
- log_option("Option found", optionptr);
- return optionptr + OPT_DATA;
- }
-
- if (optionptr[OPT_CODE] == DHCP_OPTION_OVERLOAD) {
- overload |= optionptr[OPT_DATA];
- /* fall through */
- }
- optionptr += len;
- }
-
- /* log3 because udhcpc uses it a lot - very noisy */
- log3("Option 0x%02x not found", code);
- return NULL;
-}
-
-/* return the position of the 'end' option (no bounds checking) */
-int FAST_FUNC udhcp_end_option(uint8_t *optionptr)
-{
- int i = 0;
-
- while (optionptr[i] != DHCP_END) {
- if (optionptr[i] != DHCP_PADDING)
- i += optionptr[i + OPT_LEN] + OPT_DATA-1;
- i++;
- }
- return i;
-}
-
-/* add an option string to the options */
-/* option bytes: [code][len][data1][data2]..[dataLEN] */
-void FAST_FUNC udhcp_add_option_string(uint8_t *optionptr, uint8_t *string)
-{
- unsigned len;
- unsigned end = udhcp_end_option(optionptr);
-
- /* end position + string length + option code/length + end option */
- if (end + string[OPT_LEN] + 2 + 1 >= DHCP_OPTIONS_BUFSIZE) {
- bb_error_msg("option 0x%02x did not fit into the packet",
- string[OPT_CODE]);
- return;
- }
- log_option("Adding option", string);
- len = OPT_DATA + string[OPT_LEN];
- memcpy(optionptr + end, string, len);
- optionptr[end + len] = DHCP_END;
-}
-
-/* add a one to four byte option to a packet */
-void FAST_FUNC udhcp_add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data)
-{
- const 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 = dhcp_option_lengths[dh->flags & OPTION_TYPE_MASK];
- option[OPT_LEN] = len;
- if (BB_BIG_ENDIAN)
- data <<= 8 * (4 - len);
- /* Assignment is unaligned! */
- move_to_unaligned32(&option[OPT_DATA], data);
- udhcp_add_option_string(optionptr, option);
- return;
- }
- }
-
- bb_error_msg("can't add option 0x%02x", code);
-}
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