1 #include <net-snmp/net-snmp-config.h>
20 #include <sys/socket.h>
28 #include <net-snmp/types.h>
29 #include <net-snmp/output_api.h>
30 #include <net-snmp/config_api.h>
32 #include <net-snmp/library/snmp_transport.h>
33 #include <net-snmp/library/snmpAAL5PVCDomain.h>
36 oid netsnmp_AAL5PVCDomain[10] = { ENTERPRISE_MIB, 3, 3, 3 };
37 static netsnmp_tdomain aal5pvcDomain;
41 * Return a string representing the address in data, or else the "far end"
42 * address if data is NULL.
46 netsnmp_aal5pvc_fmtaddr(netsnmp_transport *t, void *data, int len)
48 struct sockaddr_atmpvc *to = NULL;
50 if (data != NULL && len == sizeof(struct sockaddr_atmpvc)) {
51 to = (struct sockaddr_atmpvc *) data;
52 } else if (t != NULL && t->data != NULL &&
53 t->data_length == sizeof(struct sockaddr_atmpvc)) {
54 to = (struct sockaddr_atmpvc *) t->data;
57 return strdup("AAL5 PVC: unknown");
60 sprintf(tmp, "AAL5 PVC: %hd.%hd.%d", to->sap_addr.itf,
61 to->sap_addr.vpi, to->sap_addr.vci);
69 * You can write something into opaque that will subsequently get passed back
70 * to your send function if you like. For instance, you might want to
71 * remember where a PDU came from, so that you can send a reply there...
75 netsnmp_aal5pvc_recv(netsnmp_transport *t, void *buf, int size,
76 void **opaque, int *olength)
80 if (t != NULL && t->sock >= 0) {
82 rc = recv(t->sock, buf, size, 0);
83 if (rc < 0 && errno != EINTR) {
89 char *string = netsnmp_aal5pvc_fmtaddr(t, NULL, 0);
90 DEBUGMSGTL(("netsnmp_aal5pvc",
91 "recv on fd %d got %d bytes (from %s)\n", t->sock,
95 DEBUGMSGTL(("netsnmp_aal5pvc", "recv on fd %d err %d (\"%s\")\n",
96 t->sock, errno, strerror(errno)));
107 netsnmp_aal5pvc_send(netsnmp_transport *t, void *buf, int size,
108 void **opaque, int *olength)
111 struct sockaddr *to = NULL;
113 if (opaque != NULL && *opaque != NULL &&
114 *olength == sizeof(struct sockaddr_atmpvc)) {
115 to = (struct sockaddr *) (*opaque);
116 } else if (t != NULL && t->data != NULL &&
117 t->data_length == sizeof(struct sockaddr_atmpvc)) {
118 to = (struct sockaddr *) (t->data);
121 if (to != NULL && t != NULL && t->sock >= 0) {
122 char *string = netsnmp_aal5pvc_fmtaddr(NULL, (void *)to,
123 sizeof(struct sockaddr_atmpvc));
124 DEBUGMSGTL(("netsnmp_aal5pvc","send %d bytes from %p to %s on fd %d\n",
125 size, buf, string, t->sock));
128 rc = send(t->sock, buf, size, 0);
129 if (rc < 0 && errno != EINTR) {
140 netsnmp_aal5pvc_close(netsnmp_transport *t)
145 DEBUGMSGTL(("netsnmp_aal5pvc", "close fd %d\n", t->sock));
146 #ifndef HAVE_CLOSESOCKET
149 rc = closesocket(t->sock);
159 * Open an AAL5 PVC transport for SNMP. Local is TRUE if addr is the local
160 * NSAP to bind to (i.e. this is a server-type session); otherwise addr is
161 * the remote NSAP to send things to.
165 netsnmp_aal5pvc_transport(struct sockaddr_atmpvc *addr, int local)
169 netsnmp_transport *t = NULL;
171 if (addr == NULL || addr->sap_family != AF_ATMPVC) {
175 t = (netsnmp_transport *) malloc(sizeof(netsnmp_transport));
180 string = netsnmp_aal5pvc_fmtaddr(NULL, (void *) addr,
181 sizeof(struct sockaddr_atmpvc));
182 DEBUGMSGTL(("netsnmp_aal5pvc", "open %s %s\n", local ? "local" : "remote",
186 memset(t, 0, sizeof(netsnmp_transport));
188 t->domain = netsnmp_AAL5PVCDomain;
190 sizeof(netsnmp_AAL5PVCDomain) / sizeof(netsnmp_AAL5PVCDomain[0]);
192 t->sock = socket(PF_ATMPVC, SOCK_DGRAM, 0);
194 DEBUGMSGTL(("netsnmp_aal5pvc","socket failed (%s)\n",strerror(errno)));
195 netsnmp_transport_free(t);
198 DEBUGMSGTL(("netsnmp_aal5pvc", "fd %d opened\n", t->sock));
201 * Set up the QOS parameters.
204 memset(&qos, 0, sizeof(struct atm_qos));
206 qos.rxtp.traffic_class = ATM_UBR;
207 qos.rxtp.max_sdu = SNMP_MAX_LEN; /* Hmm -- this is a bit small? */
210 if (setsockopt(t->sock, SOL_ATM, SO_ATMQOS, &qos, sizeof(qos)) < 0) {
211 DEBUGMSGTL(("netsnmp_aal5pvc", "setsockopt failed (%s)\n",
213 netsnmp_aal5pvc_close(t);
214 netsnmp_transport_free(t);
219 t->local = malloc(8);
220 if (t->local == NULL) {
221 netsnmp_transport_free(t);
224 t->local[0] = (addr->sap_addr.itf & 0xff00) >> 8;
225 t->local[1] = (addr->sap_addr.itf & 0x00ff) >> 0;
226 t->local[2] = (addr->sap_addr.vpi & 0xff00) >> 8;
227 t->local[3] = (addr->sap_addr.vpi & 0x00ff) >> 0;
228 t->local[4] = (addr->sap_addr.vci & 0xff000000) >> 24;
229 t->local[5] = (addr->sap_addr.vci & 0x00ff0000) >> 16;
230 t->local[6] = (addr->sap_addr.vci & 0x0000ff00) >> 8;
231 t->local[7] = (addr->sap_addr.vci & 0x000000ff) >> 0;
234 if (bind(t->sock, (struct sockaddr *) addr,
235 sizeof(struct sockaddr_atmpvc)) < 0) {
236 DEBUGMSGTL(("netsnmp_aal5pvc", "bind failed (%s)\n",
238 netsnmp_aal5pvc_close(t);
239 netsnmp_transport_free(t);
243 t->remote = malloc(8);
244 if (t->remote == NULL) {
245 netsnmp_transport_free(t);
248 t->remote[0] = (addr->sap_addr.itf & 0xff00) >> 8;
249 t->remote[1] = (addr->sap_addr.itf & 0x00ff) >> 0;
250 t->remote[2] = (addr->sap_addr.vpi & 0xff00) >> 8;
251 t->remote[3] = (addr->sap_addr.vpi & 0x00ff) >> 0;
252 t->remote[4] = (addr->sap_addr.vci & 0xff000000) >> 24;
253 t->remote[5] = (addr->sap_addr.vci & 0x00ff0000) >> 16;
254 t->remote[6] = (addr->sap_addr.vci & 0x0000ff00) >> 8;
255 t->remote[7] = (addr->sap_addr.vci & 0x000000ff) >> 0;
256 t->remote_length = 8;
258 if (connect(t->sock, (struct sockaddr *) addr,
259 sizeof(struct sockaddr_atmpvc)) < 0) {
260 DEBUGMSGTL(("netsnmp_aal5pvc", "connect failed (%s)\n",
262 netsnmp_aal5pvc_close(t);
263 netsnmp_transport_free(t);
268 t->data = malloc(sizeof(struct sockaddr_atmpvc));
269 if (t->data == NULL) {
270 netsnmp_transport_free(t);
273 memcpy(t->data, addr, sizeof(struct sockaddr_atmpvc));
274 t->data_length = sizeof(struct sockaddr_atmpvc);
277 * 16-bit length field in the trailer, no headers.
280 t->msgMaxSize = 0xffff;
281 t->f_recv = netsnmp_aal5pvc_recv;
282 t->f_send = netsnmp_aal5pvc_send;
283 t->f_close = netsnmp_aal5pvc_close;
285 t->f_fmtaddr = netsnmp_aal5pvc_fmtaddr;
293 netsnmp_aal5pvc_create_tstring(const char *string, int local)
295 struct sockaddr_atmpvc addr;
297 if (string != NULL) {
298 addr.sap_family = AF_ATMPVC;
300 if (sscanf(string, "%hd.%hd.%d", &(addr.sap_addr.itf),
301 &(addr.sap_addr.vpi), &(addr.sap_addr.vci)) == 3) {
302 return netsnmp_aal5pvc_transport(&addr, local);
303 } else if (sscanf(string, "%hd.%d", &(addr.sap_addr.vpi),
304 &(addr.sap_addr.vci)) == 2) {
305 addr.sap_addr.itf = 0;
306 return netsnmp_aal5pvc_transport(&addr, local);
307 } else if (sscanf(string, "%d", &(addr.sap_addr.vci)) == 1) {
308 addr.sap_addr.itf = 0;
309 addr.sap_addr.vpi = 0;
310 return netsnmp_aal5pvc_transport(&addr, local);
322 netsnmp_aal5pvc_create_ostring(const u_char * o, size_t o_len, int local)
324 struct sockaddr_atmpvc addr;
327 addr.sap_family = AF_ATMPVC;
328 addr.sap_addr.itf = (o[0] << 8) + (o[1] << 0);
329 addr.sap_addr.vpi = (o[2] << 8) + (o[3] << 0);
331 (o[4] << 24) + (o[5] << 16) + (o[6] << 8) + (o[7] << 0);
332 return netsnmp_aal5pvc_transport(&addr, local);
341 netsnmp_aal5pvc_ctor(void)
343 aal5pvcDomain.name = netsnmp_AAL5PVCDomain;
344 aal5pvcDomain.name_length = sizeof(netsnmp_AAL5PVCDomain) / sizeof(oid);
345 aal5pvcDomain.prefix = calloc(3, sizeof(char *));
346 aal5pvcDomain.prefix[0] = "aal5pvc";
347 aal5pvcDomain.prefix[1] = "pvc";
349 aal5pvcDomain.f_create_from_tstring = netsnmp_aal5pvc_create_tstring;
350 aal5pvcDomain.f_create_from_ostring = netsnmp_aal5pvc_create_ostring;
352 netsnmp_tdomain_register(&aal5pvcDomain);