renamed capwap directory to cw.
FossilOrigin-Name: 8a43dd9d05a4cb73210243ddd8df2a26f16c7ef2c4d4e36ab446de1f65d88223
This commit is contained in:
7u83@mail.ru
254
src/cw/cw_in_wtp_descriptor.c
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254
src/cw/cw_in_wtp_descriptor.c
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/*
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This file is part of libcapwap.
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libcapwap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcapwap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "capwap.h"
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#include "capwap_items.h"
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#include "cw_util.h"
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#include "dbg.h"
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#include "sock.h"
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static int cw_read_wtp_descriptor_versions(mbag_t mbag, uint8_t * data,
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int len, int silent)
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{
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int i = 0;
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while (i<len) {
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if (i + 8 > len) {
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if (!silent)
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cw_dbg(DBG_ELEM_ERR,
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"WTP descriptor subelement to long, length=%d>%d",
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i + 8, len);
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return 0;
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}
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uint32_t vendor_id = cw_get_dword(data + i);
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uint32_t val = cw_get_dword(data + i + 4);
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int subtype = (val >> 16) & 0xffff;
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int sublen = val & 0xffff;
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i += 8;
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if (sublen + i > len) {
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if (!silent)
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cw_dbg(DBG_ELEM_ERR,
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"WTP Descriptor sub-element too long, length = %d",
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sublen);
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return 0;
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}
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if (!silent) {
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char *dmp;
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char *dmpmem = NULL;
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if (cw_dbg_is_level(DBG_SUBELEM_DMP)) {
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dmpmem = cw_dbg_mkdmp(data + i, sublen);
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dmp = dmpmem;
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} else
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dmp = "";
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cw_dbg(DBG_SUBELEM, "WTP Descriptor subtype=%d,len=%d%s", subtype,
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sublen, dmp);
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if (dmpmem)
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free(dmpmem);
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}
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switch (subtype) {
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case CW_SUBELEM_WTP_HARDWARE_VERSION:
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/*
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mbag_set_dword(mbag,
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CW_ITEM_WTP_HARDWARE_VENDOR,
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vendor_id);
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mbag_set_bstrn(mbag,
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CW_ITEM_WTP_HARDWARE_VERSION,
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data + i, sublen);
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*/
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mbag_set_vendorstr(mbag,
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CW_ITEM_WTP_HARDWARE_VERSION,
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vendor_id, data + i, sublen);
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break;
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case CW_SUBELEM_WTP_SOFTWARE_VERSION:
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mbag_set_vendorstr(mbag,
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CW_ITEM_WTP_SOFTWARE_VERSION,
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vendor_id, data + i, sublen);
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/*
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mbag_set_dword(mbag,
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CW_ITEM_WTP_SOFTWARE_VENDOR,
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vendor_id);
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mbag_set_bstrn(mbag,
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CW_ITEM_WTP_SOFTWARE_VERSION,
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data + i, sublen);
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*/
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break;
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case CW_SUBELEM_WTP_BOOTLOADER_VERSION:
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mbag_set_vendorstr(mbag,
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CW_ITEM_WTP_BOOTLOADER_VERSION,
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vendor_id, data + i, sublen);
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/*
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mbag_set_dword(mbag,
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CW_ITEM_WTP_BOOTLOADER_VENDOR,
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vendor_id);
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mbag_set_bstrn(mbag,
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CW_ITEM_WTP_BOOTLOADER_VERSION,
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data + i, sublen);
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*/
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break;
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default:
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if (!silent)
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cw_dbg(DBG_ELEM_ERR,
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"Unknown WTP descriptor subelement, type = %d",
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subtype);
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break;
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}
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i += sublen;
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} //while (i < len);
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return 1;
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}
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static int cw_read_wtp_descriptor(mbag_t mbag, struct conn *conn,
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struct cw_action_in *a, uint8_t * data, int len,
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int silent)
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{
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mbag_set_byte(mbag, CW_ITEM_WTP_MAX_RADIOS, cw_get_byte(data));
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mbag_set_byte(mbag, CW_ITEM_WTP_RADIOS_IN_USE,
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cw_get_byte(data + 1));
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/* Get number of encryption elements */
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int ncrypt = cw_get_byte(data + 2);
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if (ncrypt == 0) {
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if (conn->strict_capwap) {
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if (!silent)
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cw_dbg(DBG_ELEM_ERR,
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"Bad WTP Descriptor, number of encryption elements is 0.");
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return 0;
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}
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if (!silent)
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cw_dbg(DBG_RFC,
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"Non standard conform WTP Descriptor, number of encryptoin elements is 0.");
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}
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int pos = 3;
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int i;
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for (i = 0; i < ncrypt; i++) {
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// It's a dummy for now
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pos += 3;
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}
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return cw_read_wtp_descriptor_versions(mbag, data + pos, len - pos, silent);
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}
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/**
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* Read WTP Descriptor in Cisco-Style (Draft 7)
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*/
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static int cw_read_cisco_wtp_descriptor(mbag_t mbag, struct conn *conn,
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struct cw_action_in *a, uint8_t * data, int len,
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int silent)
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{
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mbag_set_byte(mbag, CW_ITEM_WTP_MAX_RADIOS, cw_get_byte(data));
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mbag_set_byte(mbag, CW_ITEM_WTP_RADIOS_IN_USE,
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cw_get_byte(data + 1));
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int pos = 2;
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/* Encryption element, for now dumy XXX */
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cw_get_word(data + pos + 2);
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pos += 2;
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return cw_read_wtp_descriptor_versions(mbag, data + pos, len - pos, silent);
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}
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int cw_in_wtp_descriptor(struct conn *conn, struct cw_action_in *a, uint8_t * data,
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int len, struct sockaddr *from)
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{
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mbag_t mbag = conn->incomming;
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return cw_read_wtp_descriptor(mbag, conn, a, data, len, 0);
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}
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int cw_in_cipwap_wtp_descriptor(struct conn *conn, struct cw_action_in *a, uint8_t * data,
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int len, struct sockaddr *from)
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{
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mbag_t mbag = conn->incomming;
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switch (conn->capwap_mode) {
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case CW_MODE_CISCO:
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return cw_read_cisco_wtp_descriptor(mbag, conn, a, data, len,
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0);
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case CW_MODE_CIPWAP:
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{
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/* try to get the right WTP Descriptor */
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int rc;
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rc = cw_read_wtp_descriptor(mbag, conn, a, data, len,
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1);
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if (rc) {
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return cw_read_wtp_descriptor(mbag, conn, a,
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data, len, 0);
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}
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rc = cw_read_cisco_wtp_descriptor(mbag, conn, a,
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data, len, 0);
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if (rc) {
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return cw_read_cisco_wtp_descriptor(mbag,
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conn, a, data,
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len, 0);
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}
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return cw_read_wtp_descriptor(mbag, conn, a, data,
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len, 0);
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}
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default:
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return cw_read_wtp_descriptor(mbag, conn, a, data, len, 0);
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}
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return 0;
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}
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