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version 1.1.2.2, 2010/10/27 16:04:52
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version 1.4, 2014/02/05 15:44:06
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/************************************************************************* |
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* (C) 2010 AITNET - Sofia/Bulgaria - <office@aitbg.com> |
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* by Michael Pounov <misho@aitbg.com> |
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* |
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* $Author$ |
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* $Id$ |
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* |
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************************************************************************* |
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The ELWIX and AITNET software is distributed under the following |
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terms: |
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|
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All of the documentation and software included in the ELWIX and AITNET |
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Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
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|
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Copyright 2004 - 2014 |
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by Michael Pounov <misho@elwix.org>. All rights reserved. |
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|
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions |
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are met: |
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1. Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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2. Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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3. All advertising materials mentioning features or use of this software |
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must display the following acknowledgement: |
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This product includes software developed by Michael Pounov <misho@elwix.org> |
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ELWIX - Embedded LightWeight unIX and its contributors. |
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4. Neither the name of AITNET nor the names of its contributors |
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may be used to endorse or promote products derived from this software |
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without specific prior written permission. |
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|
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THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND |
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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SUCH DAMAGE. |
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*/ |
| #include "global.h" |
#include "global.h" |
| #include "dwds.h" |
#include "dwds.h" |
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| inline int | static inline int |
| wifi_getParent(const char *csVAP, char *psParent, size_t plen) |
wifi_getParent(const char *csVAP, char *psParent, size_t plen) |
| { |
{ |
| char szOID[STRSIZ] = { 0 }; |
char szOID[STRSIZ] = { 0 }; |
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Line 15 wifi_getParent(const char *csVAP, char *psParent, size
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Line 60 wifi_getParent(const char *csVAP, char *psParent, size
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| memset(psParent, 0, plen); |
memset(psParent, 0, plen); |
| snprintf(szOID, STRSIZ, "net.wlan.%s.%%parent", csVAP + 4); |
snprintf(szOID, STRSIZ, "net.wlan.%s.%%parent", csVAP + 4); |
| if (sysctlbyname(szOID, psParent, &plen, NULL, 0) == -1) { |
if (sysctlbyname(szOID, psParent, &plen, NULL, 0) == -1) { |
| syslog(LOG_ERR, "Error:: can`t get parent #%d - %s\n", errno, strerror(errno)); | // syslog(LOG_ERR, "Error:: can`t get parent #%d - %s\n", errno, strerror(errno)); |
| return -1; |
return -1; |
| } else |
} else |
| psParent[plen] = 0; |
psParent[plen] = 0; |
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Line 24 wifi_getParent(const char *csVAP, char *psParent, size
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Line 69 wifi_getParent(const char *csVAP, char *psParent, size
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| } |
} |
| |
|
| inline int |
inline int |
| wifi_chkIface(const char *csIface, char **ppsIF, int nIF) | wifi_chkIface(const char *csVAP, char **ppsIF, int nIF) |
| { |
{ |
| char szParent[IFNAMSIZ]; |
char szParent[IFNAMSIZ]; |
| register int i; |
register int i; |
| |
|
| FTRACE(5); |
FTRACE(5); |
| |
|
| assert(csIface); | assert(csVAP); |
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|
| if (wifi_getParent(csIface, szParent, IFNAMSIZ) == -1) | if (wifi_getParent(csVAP, szParent, IFNAMSIZ) == -1) |
| return -1; | return 0; |
| |
|
| for (i = 0; i < nIF; i++) |
for (i = 0; i < nIF; i++) |
| if (!strcasecmp(ppsIF[i], "any") || !strcmp(ppsIF[i], szParent)) |
if (!strcasecmp(ppsIF[i], "any") || !strcmp(ppsIF[i], szParent)) |
| return 1; /* OK, vap is child */ |
return 1; /* OK, vap is child */ |
| |
|
| syslog(LOG_ERR, "Error:: Interface %s parent %s not being monitored", csIface, szParent); | VERB(2) syslog(LOG_ERR, "Error:: Interface %s parent %s not being monitored", csVAP, szParent); |
| return 0; |
return 0; |
| } |
} |
| |
|
| inline int | static inline int |
| wifi_isWDS(int fd, const char *csVAP) |
wifi_isWDS(int fd, const char *csVAP) |
| { |
{ |
| struct ifmediareq ifmr; |
struct ifmediareq ifmr; |
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Line 64 wifi_isWDS(int fd, const char *csVAP)
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Line 109 wifi_isWDS(int fd, const char *csVAP)
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| return (ifmr.ifm_current & IFM_IEEE80211_WDS) != 0; |
return (ifmr.ifm_current & IFM_IEEE80211_WDS) != 0; |
| } |
} |
| |
|
| inline int | static inline int |
| wifi_getBSSID(int fd, const char *csVAP, uint8_t *psBSSID, int len) |
wifi_getBSSID(int fd, const char *csVAP, uint8_t *psBSSID, int len) |
| { |
{ |
| struct ieee80211req ireq; |
struct ieee80211req ireq; |
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Line 83 wifi_getBSSID(int fd, const char *csVAP, uint8_t *psBS
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Line 128 wifi_getBSSID(int fd, const char *csVAP, uint8_t *psBS
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| syslog(LOG_ERR, "Error:: can`t get BSSID for %s #%d - %s\n", csVAP, |
syslog(LOG_ERR, "Error:: can`t get BSSID for %s #%d - %s\n", csVAP, |
| errno, strerror(errno)); |
errno, strerror(errno)); |
| return -1; |
return -1; |
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} |
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return 0; |
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} |
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|
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struct dwds_if * |
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wifi_buildWDS(int fd, char **ppsIF, int nIF) |
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{ |
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struct dwds_if *p, *wds = NULL; |
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char szVAP[IFNAMSIZ]; |
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struct ether_addr bssid; |
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register int i; |
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|
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FTRACE(5); |
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|
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for (i = 0; i < 128; i++) { |
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memset(szVAP, 0, IFNAMSIZ); |
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snprintf(szVAP, IFNAMSIZ, "wlan%d", i); |
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if (wifi_chkIface(szVAP, ppsIF, nIF) && !wifi_isWDS(fd, szVAP)) { |
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p = malloc(sizeof(struct dwds_if)); |
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if (!p) { |
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syslog(LOG_ERR, "Error:: can`t allocate memory #%d - %s\n", |
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errno, strerror(errno)); |
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i = -1; |
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break; |
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} |
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strlcpy(p->if_name, szVAP, IFNAMSIZ); |
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if (wifi_getBSSID(fd, szVAP, p->if_bssid, IEEE80211_ADDR_LEN) == -1) { |
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syslog(LOG_ERR, "Error:: can`t get BSSID #%d - %s\n", |
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errno, strerror(errno)); |
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i = -1; |
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break; |
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} |
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p->if_next = wds; |
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wds = p; |
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|
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memcpy(&bssid, p->if_bssid, ETHER_ADDR_LEN); |
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syslog(LOG_INFO, "BSSID:%s discover WDS vap %s\n", ether_ntoa(&bssid), szVAP); |
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} |
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} |
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|
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if (i == -1) |
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while ((p = wds)) { |
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wds = wds->if_next; |
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free(p); |
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} |
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|
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return wds; |
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} |
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|
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inline int |
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wifi_destroyWDS(const char *csIface, struct dwds_if **wds) |
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{ |
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struct dwds_if *p, **pp; |
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FTRACE(5); |
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|
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assert(csIface); |
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assert(wds); |
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|
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for (pp = wds; (p = *pp); pp = &p->if_next) |
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if (!strncmp(p->if_name, csIface, IFNAMSIZ)) |
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break; |
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if (p) { |
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*pp = p->if_next; |
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free(p); |
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return 0; |
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} |
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|
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return 1; |
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} |
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|
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static int |
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wifi_vapDestroy(const char *csVAP) |
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{ |
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struct ieee80211req ifr; |
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int s; |
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|
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FTRACE(5); |
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|
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assert(csVAP); |
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|
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s = socket(PF_INET, SOCK_DGRAM, 0); |
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if (s == -1) { |
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syslog(LOG_ERR, "Error:: destroy socket(vap) %m\n"); |
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return -1; |
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} |
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|
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memset(&ifr, 0, sizeof ifr); |
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strlcpy(ifr.i_name, csVAP, IFNAMSIZ); |
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if (ioctl(s, SIOCIFDESTROY, &ifr) == -1) { |
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syslog(LOG_ERR, "Error:: destroy ioctl(vap) %m\n"); |
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close(s); |
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return -1; |
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} else |
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close(s); |
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return 0; |
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} |
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|
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inline int |
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wifi_leaveWDS(struct ether_addr bssid, struct dwds_if **wds, char *psVAP, int vapLen) |
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{ |
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struct dwds_if *p, **pp; |
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|
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FTRACE(5); |
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|
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assert(wds); |
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assert(psVAP); |
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|
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for (pp = wds; (p = *pp); pp = &p->if_next) |
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if (!memcmp(p->if_bssid, &bssid, IEEE80211_ADDR_LEN)) |
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break; |
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if (p) { |
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*pp = p->if_next; |
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strlcpy(psVAP, p->if_name, vapLen); |
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if (wifi_vapDestroy(p->if_name) != -1) |
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VERB(1) syslog(LOG_INFO, "BSSID:%s WDS VAP %s destroyed\n", |
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ether_ntoa(&bssid), p->if_name); |
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free(p); |
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return 0; |
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} |
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|
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return 1; |
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} |
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|
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static int |
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wifi_vapCreate(const char *csIface, struct dwds_if *p) |
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{ |
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struct ieee80211_clone_params cp; |
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struct ifreq ifr; |
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struct ether_addr bssid; |
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int s; |
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|
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FTRACE(5); |
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|
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assert(csIface); |
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assert(p); |
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|
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s = socket(PF_INET, SOCK_DGRAM, 0); |
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if (s == -1) { |
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syslog(LOG_ERR, "Error:: create socket(vap) %m\n"); |
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return -1; |
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} |
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|
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memset(&cp, 0, sizeof cp); |
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strlcpy(cp.icp_parent, csIface, IFNAMSIZ); |
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cp.icp_opmode = IEEE80211_M_WDS; |
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memcpy(cp.icp_bssid, p->if_bssid, IEEE80211_ADDR_LEN); |
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|
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memset(&ifr, 0, sizeof ifr); |
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strlcpy(ifr.ifr_name, "wlan", IFNAMSIZ); |
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ifr.ifr_data = (void *) &cp; |
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|
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if (ioctl(s, SIOCIFCREATE2, &ifr) == -1) { |
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memcpy(&bssid, cp.icp_bssid, IEEE80211_ADDR_LEN); |
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syslog(LOG_ERR, "Error:: create ioctl(vap) mode %u flags 0x%x parent %s bssid %s %m\n", |
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cp.icp_opmode, cp.icp_flags, cp.icp_parent, ether_ntoa(&bssid)); |
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close(s); |
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return -1; |
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} else { |
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strlcpy(p->if_name, ifr.ifr_name, IFNAMSIZ); |
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close(s); |
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} |
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|
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return 0; |
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} |
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|
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inline int |
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wifi_createWDS(const char *csIface, struct ether_addr bssid, struct dwds_if **wds) |
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{ |
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struct dwds_if *p; |
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char szParent[IFNAMSIZ]; |
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FTRACE(5); |
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assert(csIface); |
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assert(wds); |
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|
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for (p = *wds; p; p = p->if_next) |
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if (!memcmp(p->if_bssid, &bssid, IEEE80211_ADDR_LEN)) { |
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VERB(1) syslog(LOG_INFO, "BSSID:%s WDS VAP already created (%s)\n", |
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ether_ntoa(&bssid), csIface); |
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return 1; |
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} |
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if (wifi_getParent(csIface, szParent, IFNAMSIZ) == -1) { |
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syslog(LOG_ERR, "Error:: %s no pointer to parent interface\n", csIface); |
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return -1; |
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} |
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|
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p = malloc(sizeof(struct dwds_if)); |
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if (!p) { |
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syslog(LOG_ERR, "Error:: malloc failed: %m\n"); |
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return -1; |
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} else |
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memcpy(p->if_bssid, &bssid, IEEE80211_ADDR_LEN); |
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if (wifi_vapCreate(szParent, p) == -1) { |
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free(p); |
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return -1; |
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} else { |
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p->if_next = *wds; |
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*wds = p; |
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VERB(1) syslog(LOG_INFO, "BSSID:%s create WDS VAP %s\n", ether_ntoa(&bssid), p->if_name); |
| } |
} |
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|
| return 0; |
return 0; |