![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to vap.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedtools / src|
Return to vap.c CVS log | Up to [ELWIX - Embedded LightWeight unIX -] / embedtools / src |
1.1.2.1 misho 1: #include "global.h"
2: #include "dwds.h"
3:
4:
1.1.2.3 misho 5: static inline int
1.1.2.2 misho 6: wifi_getParent(const char *csVAP, char *psParent, size_t plen)
7: {
8: char szOID[STRSIZ] = { 0 };
9:
10: FTRACE(5);
11:
12: assert(csVAP);
13: assert(psParent);
14:
15: memset(psParent, 0, plen);
16: snprintf(szOID, STRSIZ, "net.wlan.%s.%%parent", csVAP + 4);
17: if (sysctlbyname(szOID, psParent, &plen, NULL, 0) == -1) {
1.1.2.4 misho 18: // syslog(LOG_ERR, "Error:: can`t get parent #%d - %s\n", errno, strerror(errno));
1.1.2.2 misho 19: return -1;
20: } else
21: psParent[plen] = 0;
22:
23: return 0;
24: }
25:
1.1.2.6 misho 26: inline int
1.1.2.3 misho 27: wifi_chkIface(const char *csVAP, char **ppsIF, int nIF)
1.1.2.2 misho 28: {
29: char szParent[IFNAMSIZ];
30: register int i;
31:
32: FTRACE(5);
33:
1.1.2.3 misho 34: assert(csVAP);
1.1.2.2 misho 35:
1.1.2.3 misho 36: if (wifi_getParent(csVAP, szParent, IFNAMSIZ) == -1)
1.1.2.7 ! misho 37: return 0;
1.1.2.2 misho 38:
39: for (i = 0; i < nIF; i++)
40: if (!strcasecmp(ppsIF[i], "any") || !strcmp(ppsIF[i], szParent))
41: return 1; /* OK, vap is child */
42:
1.1.2.7 ! misho 43: VERB(2) syslog(LOG_ERR, "Error:: Interface %s parent %s not being monitored", csVAP, szParent);
1.1.2.2 misho 44: return 0;
45: }
46:
1.1.2.3 misho 47: static inline int
1.1.2.2 misho 48: wifi_isWDS(int fd, const char *csVAP)
49: {
50: struct ifmediareq ifmr;
51:
52: FTRACE(5);
53:
54: assert(csVAP);
55:
56: memset(&ifmr, 0, sizeof ifmr);
57: strlcpy(ifmr.ifm_name, csVAP, sizeof ifmr.ifm_name);
58: if (ioctl(fd, SIOCGIFMEDIA, &ifmr) == -1) {
59: syslog(LOG_ERR, "Error:: can`t get media for %s #%d - %s\n", csVAP,
60: errno, strerror(errno));
61: return -1;
62: }
63:
64: return (ifmr.ifm_current & IFM_IEEE80211_WDS) != 0;
65: }
66:
1.1.2.3 misho 67: static inline int
1.1.2.2 misho 68: wifi_getBSSID(int fd, const char *csVAP, uint8_t *psBSSID, int len)
69: {
70: struct ieee80211req ireq;
71:
72: FTRACE(5);
73:
74: assert(csVAP);
75: assert(psBSSID);
76:
77: memset(&ireq, 0, sizeof ireq);
78: strlcpy(ireq.i_name, csVAP, sizeof ireq.i_name);
79: ireq.i_type = IEEE80211_IOC_BSSID;
80: ireq.i_data = psBSSID;
81: ireq.i_len = len;
82: if (ioctl(fd, SIOCG80211, &ireq) == -1) {
83: syslog(LOG_ERR, "Error:: can`t get BSSID for %s #%d - %s\n", csVAP,
84: errno, strerror(errno));
85: return -1;
86: }
87:
88: return 0;
89: }
1.1.2.3 misho 90:
91: struct dwds_if *
92: wifi_buildWDS(int fd, char **ppsIF, int nIF)
93: {
94: struct dwds_if *p, *wds = NULL;
95: char szVAP[IFNAMSIZ];
96: struct ether_addr bssid;
97: register int i;
98:
1.1.2.7 ! misho 99: FTRACE(5);
! 100:
1.1.2.3 misho 101: for (i = 0; i < 128; i++) {
102: memset(szVAP, 0, IFNAMSIZ);
103: snprintf(szVAP, IFNAMSIZ, "wlan%d", i);
1.1.2.7 ! misho 104: if (wifi_chkIface(szVAP, ppsIF, nIF) && !wifi_isWDS(fd, szVAP)) {
1.1.2.3 misho 105: p = malloc(sizeof(struct dwds_if));
106: if (!p) {
107: syslog(LOG_ERR, "Error:: can`t allocate memory #%d - %s\n",
108: errno, strerror(errno));
109: i = -1;
110: break;
111: }
112: strlcpy(p->if_name, szVAP, IFNAMSIZ);
113: if (wifi_getBSSID(fd, szVAP, p->if_bssid, IEEE80211_ADDR_LEN) == -1) {
1.1.2.7 ! misho 114: syslog(LOG_ERR, "Error:: can`t get BSSID #%d - %s\n",
! 115: errno, strerror(errno));
1.1.2.3 misho 116: i = -1;
117: break;
118: }
119: p->if_next = wds;
120: wds = p;
121:
122: memcpy(&bssid, p->if_bssid, ETHER_ADDR_LEN);
123: syslog(LOG_INFO, "BSSID:%s discover WDS vap %s\n", ether_ntoa(&bssid), szVAP);
124: }
125: }
126:
127: if (i == -1)
128: while ((p = wds)) {
129: wds = wds->if_next;
130: free(p);
131: }
132:
133: return wds;
134: }
1.1.2.5 misho 135:
1.1.2.6 misho 136: inline int
1.1.2.5 misho 137: wifi_destroyWDS(const char *csIface, struct dwds_if **wds)
138: {
139: struct dwds_if *p, **pp;
140:
1.1.2.7 ! misho 141: FTRACE(5);
! 142:
1.1.2.5 misho 143: assert(csIface);
144: assert(wds);
145:
146: for (pp = wds; (p = *pp); pp = &p->if_next)
147: if (!strncmp(p->if_name, csIface, IFNAMSIZ))
148: break;
149: if (p) {
150: *pp = p->if_next;
151: free(p);
1.1.2.6 misho 152: return 0;
153: }
154:
155: return 1;
156: }
157:
158: static int
159: wifi_vapDestroy(const char *csVAP)
160: {
161: struct ieee80211req ifr;
162: int s;
163:
1.1.2.7 ! misho 164: FTRACE(5);
! 165:
1.1.2.6 misho 166: assert(csVAP);
167:
168: s = socket(PF_INET, SOCK_DGRAM, 0);
169: if (s == -1) {
170: syslog(LOG_ERR, "Error:: destroy socket(vap) %m\n");
171: return -1;
172: }
173:
174: memset(&ifr, 0, sizeof ifr);
175: strlcpy(ifr.i_name, csVAP, IFNAMSIZ);
176: if (ioctl(s, SIOCIFDESTROY, &ifr) == -1) {
177: syslog(LOG_ERR, "Error:: destroy ioctl(vap) %m\n");
178: close(s);
179: return -1;
180: } else
181: close(s);
182:
183: return 0;
184: }
185:
186: inline int
187: wifi_leaveWDS(struct ether_addr bssid, struct dwds_if **wds)
188: {
189: struct dwds_if *p, **pp;
190:
1.1.2.7 ! misho 191: FTRACE(5);
! 192:
1.1.2.6 misho 193: assert(wds);
194:
195: for (pp = wds; (p = *pp); pp = &p->if_next)
196: if (!memcmp(p->if_bssid, &bssid, IEEE80211_ADDR_LEN))
197: break;
198: if (p) {
199: *pp = p->if_next;
200: if (wifi_vapDestroy(p->if_name) != -1)
201: VERB(1) syslog(LOG_INFO, "BSSID:%s WDS VAP %s destroyed\n",
202: ether_ntoa(&bssid), p->if_name);
203: free(p);
204: return 0;
205: }
206:
207: return 1;
208: }
209:
210: static int
211: wifi_vapCreate(const char *csIface, struct dwds_if *p)
212: {
213: struct ieee80211_clone_params cp;
214: struct ifreq ifr;
215: struct ether_addr bssid;
216: int s;
217:
1.1.2.7 ! misho 218: FTRACE(5);
! 219:
1.1.2.6 misho 220: assert(csIface);
221: assert(p);
222:
223: s = socket(PF_INET, SOCK_DGRAM, 0);
224: if (s == -1) {
225: syslog(LOG_ERR, "Error:: create socket(vap) %m\n");
226: return -1;
227: }
228:
229: memset(&cp, 0, sizeof cp);
230: strlcpy(cp.icp_parent, csIface, IFNAMSIZ);
231: cp.icp_opmode = IEEE80211_M_WDS;
232: memcpy(cp.icp_bssid, p->if_bssid, IEEE80211_ADDR_LEN);
233:
234: memset(&ifr, 0, sizeof ifr);
235: strlcpy(ifr.ifr_name, "wlan", IFNAMSIZ);
236: ifr.ifr_data = (void *) &cp;
237:
238: if (ioctl(s, SIOCIFCREATE2, &ifr) == -1) {
239: memcpy(&bssid, cp.icp_bssid, IEEE80211_ADDR_LEN);
240: syslog(LOG_ERR, "Error:: create ioctl(vap) mode %u flags 0x%x parent %s bssid %s %m\n",
241: cp.icp_opmode, cp.icp_flags, cp.icp_parent, ether_ntoa(&bssid));
242: close(s);
243: return -1;
244: } else {
245: strlcpy(p->if_name, ifr.ifr_name, IFNAMSIZ);
246: close(s);
247: }
248:
249: return 0;
250: }
251:
252: inline int
253: wifi_createWDS(const char *csIface, struct ether_addr bssid, struct dwds_if **wds)
254: {
255: struct dwds_if *p;
256: char szParent[IFNAMSIZ];
257:
1.1.2.7 ! misho 258: FTRACE(5);
! 259:
1.1.2.6 misho 260: assert(csIface);
261: assert(wds);
262:
263: for (p = *wds; p; p = p->if_next)
264: if (!memcmp(p->if_bssid, &bssid, IEEE80211_ADDR_LEN)) {
265: VERB(1) syslog(LOG_INFO, "BSSID:%s WDS VAP already created (%s)\n",
266: ether_ntoa(&bssid), csIface);
267: return 1;
268: }
269: if (wifi_getParent(csIface, szParent, IFNAMSIZ) == -1) {
270: syslog(LOG_ERR, "Error:: %s no pointer to parent interface\n", csIface);
271: return -1;
272: }
273:
274: p = malloc(sizeof(struct dwds_if));
275: if (!p) {
276: syslog(LOG_ERR, "Error:: malloc failed: %m\n");
277: return -1;
278: } else
279: memcpy(p->if_bssid, &bssid, IEEE80211_ADDR_LEN);
1.1.2.7 ! misho 280: if (wifi_vapCreate(szParent, p) == -1) {
1.1.2.6 misho 281: free(p);
282: return -1;
283: } else {
284: p->if_next = *wds;
285: *wds = p;
286: VERB(1) syslog(LOG_INFO, "BSSID:%s create WDS VAP %s\n", ether_ntoa(&bssid), p->if_name);
1.1.2.5 misho 287: }
1.1.2.6 misho 288:
289: return 0;
1.1.2.5 misho 290: }