/src/net-snmp/snmplib/transports/snmpAAL5PVCDomain.c

Source
#include <net-snmp/net-snmp-config.h>

#include <net-snmp/library/snmpAAL5PVCDomain.h>

#include <stdio.h>
#include <sys/types.h>
#include <ctype.h>
#include <errno.h>

#ifdef HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include <atm.h>

#include <net-snmp/types.h>
#include <net-snmp/output_api.h>
#include <net-snmp/config_api.h>

#include <net-snmp/library/snmp.h>
#include <net-snmp/library/snmp_transport.h>
#include <net-snmp/library/tools.h>


const oid netsnmp_AAL5PVCDomain[10] = { NETSNMP_ENTERPRISE_MIB, 3, 3, 3 };
static netsnmp_tdomain aal5pvcDomain;


/*
 * Return a string representing the address in data, or else the "far end"
 * address if data is NULL.  
 */

static char *
netsnmp_aal5pvc_fmtaddr(netsnmp_transport *t, const void *data, int len)
{
    const struct sockaddr_atmpvc *to = NULL;

    if (data != NULL && len == sizeof(struct sockaddr_atmpvc)) {
        to = (const struct sockaddr_atmpvc *) data;
    } else if (t != NULL && t->data != NULL &&
               t->data_length == sizeof(struct sockaddr_atmpvc)) {
        to = (const struct sockaddr_atmpvc *) t->data;
    }
    if (to == NULL) {
        return strdup("AAL5 PVC: unknown");
    } else {
        char *tmp;

        if (asprintf(&tmp, "AAL5 PVC: %hd.%hd.%d", to->sap_addr.itf,
         to->sap_addr.vpi, to->sap_addr.vci) < 0)
            tmp = NULL;
        return tmp;
    }
}

static void
netsnmp_aal5pvc_get_taddr(netsnmp_transport *t, void **addr, size_t *addr_len)
{
    struct sockaddr_atmpvc *sa = t->remote;
    unsigned char *p;

    *addr_len = 8;
    if (!(*addr = malloc(*addr_len)))
        return;
    p = *addr;
    p[0] = sa->sap_addr.itf >> 8;
    p[1] = sa->sap_addr.itf >> 0;
    p[2] = sa->sap_addr.vpi >> 8;
    p[3] = sa->sap_addr.vpi >> 0;
    p[4] = sa->sap_addr.vci >> 24;
    p[5] = sa->sap_addr.vci >> 16;
    p[6] = sa->sap_addr.vci >> 8;
    p[7] = sa->sap_addr.vci >> 0;
}

/*
 * You can write something into opaque that will subsequently get passed back 
 * to your send function if you like.  For instance, you might want to
 * remember where a PDU came from, so that you can send a reply there...  
 */

static int
netsnmp_aal5pvc_recv(netsnmp_transport *t, void *buf, int size,
         void **opaque, int *olength)
{
    int rc = -1;

    if (t && NETSNMP_IS_VALID_SOCKET(t->sock)) {
  while (rc < 0) {
      rc = recvfrom(t->sock, buf, size, 0, NULL, NULL);
      if (rc < 0 && errno != EINTR) {
    break;
      }
  }

        if (rc >= 0) {
            DEBUGIF("netsnmp_aal5pvc") {
                char *str = netsnmp_aal5pvc_fmtaddr(t, NULL, 0);
                DEBUGMSGTL(("netsnmp_aal5pvc",
                            "recv on fd %" NETSNMP_FMT_SKT " got %d bytes (from %s)\n",
                            t->sock, rc, str));
                free(str);
            }
        } else {
            DEBUGMSGTL(("netsnmp_aal5pvc",
                        "recv on fd %" NETSNMP_FMT_SKT " err %d (\"%s\")\n", 
      t->sock, errno, strerror(errno)));
        }
        *opaque = NULL;
        *olength = 0;
    }
    return rc;
}



static int
netsnmp_aal5pvc_send(netsnmp_transport *t, const void *buf, int size,
                     void **opaque, int *olength)
{
    int rc = -1;
    const struct sockaddr *to = NULL;

    if (opaque != NULL && *opaque != NULL &&
        *olength == sizeof(struct sockaddr_atmpvc)) {
        to = (const struct sockaddr *) (*opaque);
    } else if (t != NULL && t->data != NULL &&
               t->data_length == sizeof(struct sockaddr_atmpvc)) {
        to = (const struct sockaddr *) (t->data);
    }

    if (to && t && NETSNMP_IS_VALID_SOCKET(t->sock)) {
        DEBUGIF("netsnmp_aal5pvc") {
            char *str = netsnmp_aal5pvc_fmtaddr(NULL, to,
                                                sizeof(struct sockaddr_atmpvc));
            DEBUGMSGTL(("netsnmp_aal5pvc",
                        "send %d bytes to %s on fd %" NETSNMP_FMT_SKT "\n",
                        size, str, t->sock));
            free(str);
        }
  while (rc < 0) {
      rc = sendto(t->sock, buf, size, 0, NULL, 0);
      if (rc < 0 && errno != EINTR) {
    break;
      }
  }
    }
    return rc;
}



static int
netsnmp_aal5pvc_close(netsnmp_transport *t)
{
    int rc;

    if (!NETSNMP_IS_VALID_SOCKET(t->sock))
        return -1;

#ifndef HAVE_CLOSESOCKET
    rc = close(t->sock);
#else
    rc = closesocket(t->sock);
#endif
    t->sock = NETSNMP_INVALID_SOCKET;

    return rc;
}



/*
 * Open an AAL5 PVC transport for SNMP.  Local is TRUE if addr is the local 
 * NSAP to bind to (i.e. this is a server-type session); otherwise addr is 
 * the remote NSAP to send things to.  
 */

netsnmp_transport *
netsnmp_aal5pvc_transport(const struct sockaddr_atmpvc *addr, int local)
{
    netsnmp_transport *t = NULL;

#ifdef NETSNMP_NO_LISTEN_SUPPORT
    if (local)
        return NULL;
#endif /* NETSNMP_NO_LISTEN_SUPPORT */

    if (addr == NULL || addr->sap_family != AF_ATMPVC) {
        return NULL;
    }

    t = netsnmp_transport_alloc();
    if (t == NULL) {
        return NULL;
    }

    DEBUGIF("netsnmp_aal5pvc") {
        char *str = netsnmp_aal5pvc_fmtaddr(NULL, addr,
                                            sizeof(struct sockaddr_atmpvc));
        DEBUGMSGTL(("netsnmp_aal5pvc", "open %s %s\n",
                    local ? "local" : "remote", str));
        free(str);
    }

    t->domain = netsnmp_AAL5PVCDomain;
    t->domain_length =
        sizeof(netsnmp_AAL5PVCDomain) / sizeof(netsnmp_AAL5PVCDomain[0]);

    t->sock = socket(PF_ATMPVC, SOCK_DGRAM, 0);
    if (!NETSNMP_IS_VALID_SOCKET(t->sock)) {
        DEBUGMSGTL(("netsnmp_aal5pvc","socket failed (%s)\n",strerror(errno)));
        netsnmp_transport_free(t);
        return NULL;
    }
    DEBUGMSGTL(("netsnmp_aal5pvc", "fd %" NETSNMP_FMT_SKT " opened\n",
                t->sock));

    {
        /*
         * Set up the QOS parameters.
         */

        struct atm_qos qos = { };
        qos.aal = ATM_AAL5;
        qos.rxtp.traffic_class = ATM_UBR;
        qos.rxtp.max_sdu = SNMP_MAX_LEN;    /*  Hmm -- this is a bit small?  */
        qos.txtp = qos.rxtp;

        if (setsockopt(t->sock, SOL_ATM, SO_ATMQOS, &qos, sizeof(qos)) < 0) {
            DEBUGMSGTL(("netsnmp_aal5pvc", "setsockopt failed (%s)\n",
                        strerror(errno)));
            netsnmp_aal5pvc_close(t);
            netsnmp_transport_free(t);
            return NULL;
        }
    }

    if (local) {
#ifndef NETSNMP_NO_LISTEN_SUPPORT
        t->local_length = sizeof(*addr);
        t->local = netsnmp_memdup(addr, sizeof(*addr));
        if (t->local == NULL) {
            netsnmp_transport_free(t);
            return NULL;
        }

        if (bind(t->sock, (const struct sockaddr *)addr,
                 sizeof(struct sockaddr_atmpvc)) < 0) {
            DEBUGMSGTL(("netsnmp_aal5pvc", "bind failed (%s)\n",
                        strerror(errno)));
            netsnmp_aal5pvc_close(t);
            netsnmp_transport_free(t);
            return NULL;
        }
#else /* NETSNMP_NO_LISTEN_SUPPORT */
        return NULL;
#endif /* NETSNMP_NO_LISTEN_SUPPORT */
    } else {
        t->remote_length = sizeof(*addr);
        t->remote = netsnmp_memdup(addr, sizeof(*addr));
        if (t->remote == NULL) {
            netsnmp_transport_free(t);
            return NULL;
        }

        if (connect(t->sock, (const struct sockaddr *)addr,
                    sizeof(struct sockaddr_atmpvc)) < 0) {
            DEBUGMSGTL(("netsnmp_aal5pvc", "connect failed (%s)\n",
                        strerror(errno)));
            netsnmp_aal5pvc_close(t);
            netsnmp_transport_free(t);
            return NULL;
        }
    }

    t->data = malloc(sizeof(struct sockaddr_atmpvc));
    if (t->data == NULL) {
        netsnmp_transport_free(t);
        return NULL;
    }
    memcpy(t->data, addr, sizeof(struct sockaddr_atmpvc));
    t->data_length = sizeof(struct sockaddr_atmpvc);

    /*
     * 16-bit length field in the trailer, no headers.  
     */

    t->msgMaxSize = 0xffff;
    t->f_recv     = netsnmp_aal5pvc_recv;
    t->f_send     = netsnmp_aal5pvc_send;
    t->f_close    = netsnmp_aal5pvc_close;
    t->f_accept   = NULL;
    t->f_fmtaddr  = netsnmp_aal5pvc_fmtaddr;
    t->f_get_taddr = netsnmp_aal5pvc_get_taddr;

    return t;
}



netsnmp_transport *
netsnmp_aal5pvc_create_tstring(const char *str, int local,
             const char *default_target)
{
    struct sockaddr_atmpvc addr;

    if (str == NULL || *str == '\0')
  str = default_target;

    if (str != NULL) {
        addr.sap_family = AF_ATMPVC;

        if (sscanf(str, "%hd.%hd.%d", &(addr.sap_addr.itf),
                   &(addr.sap_addr.vpi), &(addr.sap_addr.vci)) == 3) {
            return netsnmp_aal5pvc_transport(&addr, local);
        } else if (sscanf(str, "%hd.%d", &(addr.sap_addr.vpi),
                          &(addr.sap_addr.vci)) == 2) {
            addr.sap_addr.itf = 0;
            return netsnmp_aal5pvc_transport(&addr, local);
        } else if (sscanf(str, "%d", &(addr.sap_addr.vci)) == 1) {
            addr.sap_addr.itf = 0;
            addr.sap_addr.vpi = 0;
            return netsnmp_aal5pvc_transport(&addr, local);
        } else {
            return NULL;
        }
    } else {
        return NULL;
    }
}

static int netsnmp_aal5pvc_ostring_to_sockaddr(struct sockaddr_atmpvc *sa,
                                               const void *o, size_t o_len)
{
    const unsigned char *p = o;

    if (o_len != 8)
        return 0;

    memset(sa, 0, sizeof(*sa));
    sa->sap_family = AF_ATMPVC;
    sa->sap_addr.itf = (p[0] << 8) + (p[1] << 0);
    sa->sap_addr.vpi = (p[2] << 8) + (p[3] << 0);
    sa->sap_addr.vci = (p[4] << 24) + (p[5] << 16) + (p[6] << 8) + (p[7] << 0);
    return 1;
}

netsnmp_transport *
netsnmp_aal5pvc_create_ostring(const void *o, size_t o_len, int local)
{
    struct sockaddr_atmpvc sa;

    if (netsnmp_aal5pvc_ostring_to_sockaddr(&sa, o, o_len))
        return netsnmp_aal5pvc_transport(&sa, local);
    return NULL;
}



void
netsnmp_aal5pvc_ctor(void)
{
    aal5pvcDomain.name = netsnmp_AAL5PVCDomain;
    aal5pvcDomain.name_length = OID_LENGTH(netsnmp_AAL5PVCDomain);
    aal5pvcDomain.prefix = calloc(3, sizeof(char *));
    if (!aal5pvcDomain.prefix) {
        snmp_log(LOG_ERR, "calloc() failed - out of memory\n");
        return;
    }
    aal5pvcDomain.prefix[0] = "aal5pvc";
    aal5pvcDomain.prefix[1] = "pvc";

    aal5pvcDomain.f_create_from_tstring_new = netsnmp_aal5pvc_create_tstring;
    aal5pvcDomain.f_create_from_ostring     = netsnmp_aal5pvc_create_ostring;

    netsnmp_tdomain_register(&aal5pvcDomain);
}

Coverage Report

Created: 2026-09-04 09:22

Line	Count	Source
1		#include <net-snmp/net-snmp-config.h>
2
3		#include <net-snmp/library/snmpAAL5PVCDomain.h>
4
5		#include <stdio.h>
6		#include <sys/types.h>
7		#include <ctype.h>
8		#include <errno.h>
9
10		#ifdef HAVE_STRING_H
11		#include <string.h>
12		#else
13		#include <strings.h>
14		#endif
15		#ifdef HAVE_STDLIB_H
16		#include <stdlib.h>
17		#endif
18		#ifdef HAVE_UNISTD_H
19		#include <unistd.h>
20		#endif
21		#ifdef HAVE_SYS_SOCKET_H
22		#include <sys/socket.h>
23		#endif
24		#include <atm.h>
25
26		#include <net-snmp/types.h>
27		#include <net-snmp/output_api.h>
28		#include <net-snmp/config_api.h>
29
30		#include <net-snmp/library/snmp.h>
31		#include <net-snmp/library/snmp_transport.h>
32		#include <net-snmp/library/tools.h>
33
34
35		const oid netsnmp_AAL5PVCDomain[10] = { NETSNMP_ENTERPRISE_MIB, 3, 3, 3 };
36		static netsnmp_tdomain aal5pvcDomain;
37
38
39		/*
40		* Return a string representing the address in data, or else the "far end"
41		* address if data is NULL.
42		*/
43
44		static char *
45		netsnmp_aal5pvc_fmtaddr(netsnmp_transport t, const void data, int len)
46	0	{
47	0	const struct sockaddr_atmpvc *to = NULL;
48
49	0	if (data != NULL && len == sizeof(struct sockaddr_atmpvc)) {
50	0	to = (const struct sockaddr_atmpvc *) data;
51	0	} else if (t != NULL && t->data != NULL &&
52	0	t->data_length == sizeof(struct sockaddr_atmpvc)) {
53	0	to = (const struct sockaddr_atmpvc *) t->data;
54	0	}
55	0	if (to == NULL) {
56	0	return strdup("AAL5 PVC: unknown");
57	0	} else {
58	0	char *tmp;
59
60	0	if (asprintf(&tmp, "AAL5 PVC: %hd.%hd.%d", to->sap_addr.itf,
61	0	to->sap_addr.vpi, to->sap_addr.vci) < 0)
62	0	tmp = NULL;
63	0	return tmp;
64	0	}
65	0	}
66
67		static void
68		netsnmp_aal5pvc_get_taddr(netsnmp_transport t, void addr, size_t addr_len)
69	0	{
70	0	struct sockaddr_atmpvc *sa = t->remote;
71	0	unsigned char *p;
72
73	0	*addr_len = 8;
74	0	if (!(addr = malloc(addr_len)))
75	0	return;
76	0	p = *addr;
77	0	p[0] = sa->sap_addr.itf >> 8;
78	0	p[1] = sa->sap_addr.itf >> 0;
79	0	p[2] = sa->sap_addr.vpi >> 8;
80	0	p[3] = sa->sap_addr.vpi >> 0;
81	0	p[4] = sa->sap_addr.vci >> 24;
82	0	p[5] = sa->sap_addr.vci >> 16;
83	0	p[6] = sa->sap_addr.vci >> 8;
84	0	p[7] = sa->sap_addr.vci >> 0;
85	0	}
86
87		/*
88		* You can write something into opaque that will subsequently get passed back
89		* to your send function if you like. For instance, you might want to
90		* remember where a PDU came from, so that you can send a reply there...
91		*/
92
93		static int
94		netsnmp_aal5pvc_recv(netsnmp_transport t, void buf, int size,
95		void *opaque, int olength)
96	0	{
97	0	int rc = -1;
98
99	0	if (t && NETSNMP_IS_VALID_SOCKET(t->sock)) {
100	0	while (rc < 0) {
101	0	rc = recvfrom(t->sock, buf, size, 0, NULL, NULL);
102	0	if (rc < 0 && errno != EINTR) {
103	0	break;
104	0	}
105	0	}
106
107	0	if (rc >= 0) {
108	0	DEBUGIF("netsnmp_aal5pvc") {
109	0	char *str = netsnmp_aal5pvc_fmtaddr(t, NULL, 0);
110	0	DEBUGMSGTL(("netsnmp_aal5pvc",
111	0	"recv on fd %" NETSNMP_FMT_SKT " got %d bytes (from %s)\n",
112	0	t->sock, rc, str));
113	0	free(str);
114	0	}
115	0	} else {
116	0	DEBUGMSGTL(("netsnmp_aal5pvc",
117	0	"recv on fd %" NETSNMP_FMT_SKT " err %d (\"%s\")\n",
118	0	t->sock, errno, strerror(errno)));
119	0	}
120	0	*opaque = NULL;
121	0	*olength = 0;
122	0	}
123	0	return rc;
124	0	}
125
126
127
128		static int
129		netsnmp_aal5pvc_send(netsnmp_transport t, const void buf, int size,
130		void *opaque, int olength)
131	0	{
132	0	int rc = -1;
133	0	const struct sockaddr *to = NULL;
134
135	0	if (opaque != NULL && *opaque != NULL &&
136	0	*olength == sizeof(struct sockaddr_atmpvc)) {
137	0	to = (const struct sockaddr ) (opaque);
138	0	} else if (t != NULL && t->data != NULL &&
139	0	t->data_length == sizeof(struct sockaddr_atmpvc)) {
140	0	to = (const struct sockaddr *) (t->data);
141	0	}
142
143	0	if (to && t && NETSNMP_IS_VALID_SOCKET(t->sock)) {
144	0	DEBUGIF("netsnmp_aal5pvc") {
145	0	char *str = netsnmp_aal5pvc_fmtaddr(NULL, to,
146	0	sizeof(struct sockaddr_atmpvc));
147	0	DEBUGMSGTL(("netsnmp_aal5pvc",
148	0	"send %d bytes to %s on fd %" NETSNMP_FMT_SKT "\n",
149	0	size, str, t->sock));
150	0	free(str);
151	0	}
152	0	while (rc < 0) {
153	0	rc = sendto(t->sock, buf, size, 0, NULL, 0);
154	0	if (rc < 0 && errno != EINTR) {
155	0	break;
156	0	}
157	0	}
158	0	}
159	0	return rc;
160	0	}
161
162
163
164		static int
165		netsnmp_aal5pvc_close(netsnmp_transport *t)
166	0	{
167	0	int rc;
168
169	0	if (!NETSNMP_IS_VALID_SOCKET(t->sock))
170	0	return -1;
171
172	0	#ifndef HAVE_CLOSESOCKET
173	0	rc = close(t->sock);
174		#else
175		rc = closesocket(t->sock);
176		#endif
177	0	t->sock = NETSNMP_INVALID_SOCKET;
178
179	0	return rc;
180	0	}
181
182
183
184		/*
185		* Open an AAL5 PVC transport for SNMP. Local is TRUE if addr is the local
186		* NSAP to bind to (i.e. this is a server-type session); otherwise addr is
187		* the remote NSAP to send things to.
188		*/
189
190		netsnmp_transport *
191		netsnmp_aal5pvc_transport(const struct sockaddr_atmpvc *addr, int local)
192	0	{
193	0	netsnmp_transport *t = NULL;
194
195		#ifdef NETSNMP_NO_LISTEN_SUPPORT
196		if (local)
197		return NULL;
198		#endif /* NETSNMP_NO_LISTEN_SUPPORT */
199
200	0	if (addr == NULL \|\| addr->sap_family != AF_ATMPVC) {
201	0	return NULL;
202	0	}
203
204	0	t = netsnmp_transport_alloc();
205	0	if (t == NULL) {
206	0	return NULL;
207	0	}
208
209	0	DEBUGIF("netsnmp_aal5pvc") {
210	0	char *str = netsnmp_aal5pvc_fmtaddr(NULL, addr,
211	0	sizeof(struct sockaddr_atmpvc));
212	0	DEBUGMSGTL(("netsnmp_aal5pvc", "open %s %s\n",
213	0	local ? "local" : "remote", str));
214	0	free(str);
215	0	}
216
217	0	t->domain = netsnmp_AAL5PVCDomain;
218	0	t->domain_length =
219	0	sizeof(netsnmp_AAL5PVCDomain) / sizeof(netsnmp_AAL5PVCDomain[0]);
220
221	0	t->sock = socket(PF_ATMPVC, SOCK_DGRAM, 0);
222	0	if (!NETSNMP_IS_VALID_SOCKET(t->sock)) {
223	0	DEBUGMSGTL(("netsnmp_aal5pvc","socket failed (%s)\n",strerror(errno)));
224	0	netsnmp_transport_free(t);
225	0	return NULL;
226	0	}
227	0	DEBUGMSGTL(("netsnmp_aal5pvc", "fd %" NETSNMP_FMT_SKT " opened\n",
228	0	t->sock));
229
230	0	{
231		/*
232		* Set up the QOS parameters.
233		*/
234
235	0	struct atm_qos qos = { };
236	0	qos.aal = ATM_AAL5;
237	0	qos.rxtp.traffic_class = ATM_UBR;
238	0	qos.rxtp.max_sdu = SNMP_MAX_LEN; /* Hmm -- this is a bit small? */
239	0	qos.txtp = qos.rxtp;
240
241	0	if (setsockopt(t->sock, SOL_ATM, SO_ATMQOS, &qos, sizeof(qos)) < 0) {
242	0	DEBUGMSGTL(("netsnmp_aal5pvc", "setsockopt failed (%s)\n",
243	0	strerror(errno)));
244	0	netsnmp_aal5pvc_close(t);
245	0	netsnmp_transport_free(t);
246	0	return NULL;
247	0	}
248	0	}
249
250	0	if (local) {
251	0	#ifndef NETSNMP_NO_LISTEN_SUPPORT
252	0	t->local_length = sizeof(*addr);
253	0	t->local = netsnmp_memdup(addr, sizeof(*addr));
254	0	if (t->local == NULL) {
255	0	netsnmp_transport_free(t);
256	0	return NULL;
257	0	}
258
259	0	if (bind(t->sock, (const struct sockaddr *)addr,
260	0	sizeof(struct sockaddr_atmpvc)) < 0) {
261	0	DEBUGMSGTL(("netsnmp_aal5pvc", "bind failed (%s)\n",
262	0	strerror(errno)));
263	0	netsnmp_aal5pvc_close(t);
264	0	netsnmp_transport_free(t);
265	0	return NULL;
266	0	}
267		#else /* NETSNMP_NO_LISTEN_SUPPORT */
268		return NULL;
269		#endif /* NETSNMP_NO_LISTEN_SUPPORT */
270	0	} else {
271	0	t->remote_length = sizeof(*addr);
272	0	t->remote = netsnmp_memdup(addr, sizeof(*addr));
273	0	if (t->remote == NULL) {
274	0	netsnmp_transport_free(t);
275	0	return NULL;
276	0	}
277
278	0	if (connect(t->sock, (const struct sockaddr *)addr,
279	0	sizeof(struct sockaddr_atmpvc)) < 0) {
280	0	DEBUGMSGTL(("netsnmp_aal5pvc", "connect failed (%s)\n",
281	0	strerror(errno)));
282	0	netsnmp_aal5pvc_close(t);
283	0	netsnmp_transport_free(t);
284	0	return NULL;
285	0	}
286	0	}
287
288	0	t->data = malloc(sizeof(struct sockaddr_atmpvc));
289	0	if (t->data == NULL) {
290	0	netsnmp_transport_free(t);
291	0	return NULL;
292	0	}
293	0	memcpy(t->data, addr, sizeof(struct sockaddr_atmpvc));
294	0	t->data_length = sizeof(struct sockaddr_atmpvc);
295
296		/*
297		* 16-bit length field in the trailer, no headers.
298		*/
299
300	0	t->msgMaxSize = 0xffff;
301	0	t->f_recv = netsnmp_aal5pvc_recv;
302	0	t->f_send = netsnmp_aal5pvc_send;
303	0	t->f_close = netsnmp_aal5pvc_close;
304	0	t->f_accept = NULL;
305	0	t->f_fmtaddr = netsnmp_aal5pvc_fmtaddr;
306	0	t->f_get_taddr = netsnmp_aal5pvc_get_taddr;
307
308	0	return t;
309	0	}
310
311
312
313		netsnmp_transport *
314		netsnmp_aal5pvc_create_tstring(const char *str, int local,
315		const char *default_target)
316	0	{
317	0	struct sockaddr_atmpvc addr;
318
319	0	if (str == NULL \|\| *str == '\0')
320	0	str = default_target;
321
322	0	if (str != NULL) {
323	0	addr.sap_family = AF_ATMPVC;
324
325	0	if (sscanf(str, "%hd.%hd.%d", &(addr.sap_addr.itf),
326	0	&(addr.sap_addr.vpi), &(addr.sap_addr.vci)) == 3) {
327	0	return netsnmp_aal5pvc_transport(&addr, local);
328	0	} else if (sscanf(str, "%hd.%d", &(addr.sap_addr.vpi),
329	0	&(addr.sap_addr.vci)) == 2) {
330	0	addr.sap_addr.itf = 0;
331	0	return netsnmp_aal5pvc_transport(&addr, local);
332	0	} else if (sscanf(str, "%d", &(addr.sap_addr.vci)) == 1) {
333	0	addr.sap_addr.itf = 0;
334	0	addr.sap_addr.vpi = 0;
335	0	return netsnmp_aal5pvc_transport(&addr, local);
336	0	} else {
337	0	return NULL;
338	0	}
339	0	} else {
340	0	return NULL;
341	0	}
342	0	}
343
344		static int netsnmp_aal5pvc_ostring_to_sockaddr(struct sockaddr_atmpvc *sa,
345		const void *o, size_t o_len)
346	0	{
347	0	const unsigned char *p = o;
348
349	0	if (o_len != 8)
350	0	return 0;
351
352	0	memset(sa, 0, sizeof(*sa));
353	0	sa->sap_family = AF_ATMPVC;
354	0	sa->sap_addr.itf = (p[0] << 8) + (p[1] << 0);
355	0	sa->sap_addr.vpi = (p[2] << 8) + (p[3] << 0);
356	0	sa->sap_addr.vci = (p[4] << 24) + (p[5] << 16) + (p[6] << 8) + (p[7] << 0);
357	0	return 1;
358	0	}
359
360		netsnmp_transport *
361		netsnmp_aal5pvc_create_ostring(const void *o, size_t o_len, int local)
362	0	{
363	0	struct sockaddr_atmpvc sa;
364
365	0	if (netsnmp_aal5pvc_ostring_to_sockaddr(&sa, o, o_len))
366	0	return netsnmp_aal5pvc_transport(&sa, local);
367	0	return NULL;
368	0	}
369
370
371
372		void
373		netsnmp_aal5pvc_ctor(void)
374	4.20k	{
375	4.20k	aal5pvcDomain.name = netsnmp_AAL5PVCDomain;
376	4.20k	aal5pvcDomain.name_length = OID_LENGTH(netsnmp_AAL5PVCDomain);
377	4.20k	aal5pvcDomain.prefix = calloc(3, sizeof(char *));
378	4.20k	if (!aal5pvcDomain.prefix) {
379	0	snmp_log(LOG_ERR, "calloc() failed - out of memory\n");
380	0	return;
381	0	}
382	4.20k	aal5pvcDomain.prefix[0] = "aal5pvc";
383	4.20k	aal5pvcDomain.prefix[1] = "pvc";
384
385	4.20k	aal5pvcDomain.f_create_from_tstring_new = netsnmp_aal5pvc_create_tstring;
386	4.20k	aal5pvcDomain.f_create_from_ostring = netsnmp_aal5pvc_create_ostring;
387
388	4.20k	netsnmp_tdomain_register(&aal5pvcDomain);
389	4.20k	}