summaryrefslogtreecommitdiff
path: root/snmplib/snmpIPXDomain.c
diff options
context:
space:
mode:
Diffstat (limited to 'snmplib/snmpIPXDomain.c')
-rw-r--r--snmplib/snmpIPXDomain.c453
1 files changed, 453 insertions, 0 deletions
diff --git a/snmplib/snmpIPXDomain.c b/snmplib/snmpIPXDomain.c
new file mode 100644
index 0000000..c51f107
--- /dev/null
+++ b/snmplib/snmpIPXDomain.c
@@ -0,0 +1,453 @@
+#include <net-snmp/net-snmp-config.h>
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <ctype.h>
+#include <errno.h>
+
+#if HAVE_STRING_H
+#include <string.h>
+#else
+#include <strings.h>
+#endif
+#if HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#if HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#if HAVE_DMALLOC_H
+#include <dmalloc.h>
+#endif
+
+#include <net-snmp/types.h>
+#include <net-snmp/output_api.h>
+#include <net-snmp/config_api.h>
+
+#include <net-snmp/library/snmp_transport.h>
+#include <net-snmp/library/snmpIPXDomain.h>
+
+#define SNMP_IPX_DEFAULT_PORT 36879 /* Specified in RFC 1420. */
+static netsnmp_tdomain ipxDomain;
+
+/*
+ * Return a string representing the address in data, or else the "far end"
+ * address if data is NULL.
+ */
+
+static char *
+netsnmp_ipx_fmtaddr(netsnmp_transport *t, void *data, int len)
+{
+ struct sockaddr_ipx *to = NULL;
+
+ if (data != NULL && len == sizeof(struct sockaddr_ipx)) {
+ to = (struct sockaddr_ipx *) data;
+ } else if (t != NULL && t->data != NULL) {
+ to = (struct sockaddr_ipx *) t->data;
+ }
+ if (to == NULL) {
+ return strdup("IPX: unknown");
+ } else {
+ char tmp[64];
+ sprintf(tmp, "IPX: %08X:%02X%02X%02X%02X%02X%02X/%hu",
+ ntohl(to->sipx_network), to->sipx_node[0],
+ to->sipx_node[1], to->sipx_node[2], to->sipx_node[3],
+ to->sipx_node[4], to->sipx_node[5], ntohs(to->sipx_port));
+ return strdup(tmp);
+ }
+}
+
+
+
+/*
+ * 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_ipx_recv(netsnmp_transport *t, void *buf, int size,
+ void **opaque, int *olength)
+{
+ int rc = -1;
+ socklen_t fromlen = sizeof(struct sockaddr);
+ struct sockaddr *from;
+
+ if (t != NULL && t->sock >= 0) {
+ from = (struct sockaddr *)malloc(sizeof(struct sockaddr_ipx));
+ if (from == NULL) {
+ *opaque = NULL;
+ *olength = 0;
+ return -1;
+ } else {
+ memset(from, 0, fromlen);
+ }
+
+ while (rc < 0) {
+ rc = recvfrom(t->sock, buf, size, 0, from, &fromlen);
+ if (rc < 0 && errno != EINTR) {
+ break;
+ }
+ }
+
+ if (rc >= 0) {
+ char *str = netsnmp_ipx_fmtaddr(NULL, from, fromlen);
+ DEBUGMSGTL(("netsnmp_ipx","recvfrom fd %d got %d bytes(from %s)\n",
+ t->sock, rc, str));
+ free(str);
+ } else {
+ DEBUGMSGTL(("netsnmp_ipx", "recvfrom fd %d err %d (\"%s\")\n",
+ t->sock, errno, strerror(errno)));
+ }
+ *opaque = (void *) from;
+ *olength = sizeof(struct sockaddr_ipx);
+ }
+ return rc;
+}
+
+
+
+static int
+netsnmp_ipx_send(netsnmp_transport *t, void *buf, int size,
+ void **opaque, int *olength)
+{
+ int rc = -1;
+ struct sockaddr *to = NULL;
+
+ if (opaque != NULL && *opaque != NULL &&
+ *olength == sizeof(struct sockaddr_ipx)) {
+ to = (struct sockaddr *) (*opaque);
+ } else if (t != NULL && t->data != NULL &&
+ t->data_length == sizeof(struct sockaddr_ipx)) {
+ to = (struct sockaddr *) (t->data);
+ }
+
+ if (to != NULL && t != NULL && t->sock >= 0) {
+ char *str = netsnmp_ipx_fmtaddr(NULL, (void *)to,
+ sizeof(struct sockaddr_ipx));
+ DEBUGMSGTL(("netsnmp_ipx", "send %d bytes from %p to %s on fd %d\n",
+ size, buf, str, t->sock));
+ free(str);
+ while (rc < 0) {
+ rc = sendto(t->sock, buf, size, 0, to, sizeof(struct sockaddr));
+ if (rc < 0 && errno != EINTR) {
+ break;
+ }
+ }
+ }
+ return rc;
+}
+
+
+
+static int
+netsnmp_ipx_close(netsnmp_transport *t)
+{
+ int rc = -1;
+ if (t->sock >= 0) {
+#ifndef HAVE_CLOSESOCKET
+ rc = close(t->sock);
+#else
+ rc = closesocket(t->sock);
+#endif
+ t->sock = -1;
+ }
+ return rc;
+}
+
+
+
+/*
+ * Open a IPX-based transport for SNMP. Local is TRUE if addr is the local
+ * address to bind to (i.e. this is a server-type session); otherwise addr is
+ * the remote address to send things to.
+ */
+
+netsnmp_transport *
+netsnmp_ipx_transport(struct sockaddr_ipx *addr, int local)
+{
+ netsnmp_transport *t = NULL;
+ int rc = 0;
+ char *str = NULL;
+
+ if (addr == NULL || addr->sipx_family != AF_IPX) {
+ return NULL;
+ }
+
+ t = (netsnmp_transport *) malloc(sizeof(netsnmp_transport));
+ if (t == NULL) {
+ return NULL;
+ }
+
+ str = netsnmp_ipx_fmtaddr(NULL, (void *)addr,
+ sizeof(struct sockaddr_ipx));
+ DEBUGMSGTL(("netsnmp_ipx", "open %s %s\n", local ? "local" : "remote",
+ str));
+ free(str);
+
+ memset(t, 0, sizeof(netsnmp_transport));
+
+ t->domain = netsnmpIPXDomain;
+ t->domain_length = netsnmpIPXDomain_len;
+
+ t->sock = socket(AF_IPX, SOCK_DGRAM, AF_IPX);
+ if (t->sock < 0) {
+ netsnmp_transport_free(t);
+ return NULL;
+ }
+
+ if (local) {
+ t->local = (unsigned char*)malloc(12);
+ if (t->local == NULL) {
+ netsnmp_transport_free(t);
+ return NULL;
+ }
+ memcpy(&(t->local[00]), (u_char *) & (addr->sipx_network), 4);
+ memcpy(&(t->local[04]), (u_char *) & (addr->sipx_node), 6);
+ memcpy(&(t->local[10]), (u_char *) & (addr->sipx_port), 2);
+ t->local_length = 12;
+
+ /*
+ * This session is inteneded as a server, so we must bind on to the
+ * given address (which may include a particular network and/or node
+ * address, but definitely includes a port number).
+ */
+
+ rc = bind(t->sock, (struct sockaddr *) addr,
+ sizeof(struct sockaddr));
+ if (rc != 0) {
+ netsnmp_ipx_close(t);
+ netsnmp_transport_free(t);
+ return NULL;
+ }
+ t->data = NULL;
+ t->data_length = 0;
+ } else {
+ t->remote = (unsigned char*)malloc(12);
+ if (t->remote == NULL) {
+ netsnmp_transport_free(t);
+ return NULL;
+ }
+ memcpy(&(t->remote[00]), (u_char *) & (addr->sipx_network), 4);
+ memcpy(&(t->remote[04]), (u_char *) & (addr->sipx_node), 6);
+ memcpy(&(t->remote[10]), (u_char *) & (addr->sipx_port), 2);
+ t->remote_length = 12;
+
+ /*
+ * This is a client session. Save the address in the
+ * transport-specific data pointer for later use by snmp_ipx_send.
+ */
+
+ t->data = malloc(sizeof(struct sockaddr_ipx));
+ if (t->data == NULL) {
+ netsnmp_transport_free(t);
+ return NULL;
+ }
+ memcpy(t->data, addr, sizeof(struct sockaddr_ipx));
+ t->data_length = sizeof(struct sockaddr_ipx);
+ }
+
+ /*
+ * Maximum size of an IPX PDU is 576 bytes including a 30-byte header.
+ * Ridiculous!
+ */
+
+ t->msgMaxSize = 576 - 30;
+ t->f_recv = netsnmp_ipx_recv;
+ t->f_send = netsnmp_ipx_send;
+ t->f_close = netsnmp_ipx_close;
+ t->f_accept = NULL;
+ t->f_fmtaddr = netsnmp_ipx_fmtaddr;
+
+ return t;
+}
+
+
+
+/*
+ * Attempt to parse a string of the form [%08x]:%12x[/%d] where the parts
+ * are the network number, the node address and the port in that order.
+ */
+
+int
+netsnmp_sockaddr_ipx2(struct sockaddr_ipx *addr, const char *peername,
+ const char *default_target)
+{
+ char *input = NULL, *def = NULL;
+ const char *network, *node, *port;
+ char *tmp;
+ unsigned long i;
+
+ if (addr == NULL) {
+ return 0;
+ }
+ memset(addr, 0, sizeof(struct sockaddr_ipx));
+
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx",
+ "addr %p, peername \"%s\" default_target \"%s\"\n",
+ addr, peername ? peername : "[NIL]",
+ default_target ? default_target : "[NIL]"));
+
+ addr->sipx_family = AF_IPX;
+ addr->sipx_type = 4; /* Specified in RFC 1420. */
+
+ network = input = strdup(peername ? peername : "");
+ tmp = strchr(network, ':');
+ if (tmp != NULL) {
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx", "Node identified\n"));
+ *tmp++ = '\0';
+ node = tmp;
+ tmp = strchr(tmp, '/');
+ } else {
+ node = NULL;
+ tmp = strchr(network, '/');
+ }
+ if (tmp != NULL) {
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx", "Port identified\n"));
+ *tmp++ = '\0';
+ port = tmp;
+ } else
+ port = NULL;
+
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx", "Address: %s:%s/%s\n",
+ network ? network : "[NIL]", node ? node : "[NIL]",
+ port ? port : "[NIL]"));
+
+ def = strdup(default_target ? default_target : "");
+ if (network == NULL || *network == '\0')
+ network = def;
+ tmp = strchr(def, ':');
+ if (tmp != NULL) {
+ *tmp++ = '\0';
+ if (node == NULL || *node == '\0')
+ node = tmp;
+ tmp = strchr(tmp, '/');
+ } else
+ tmp = strchr(def, '/');
+ if (tmp != NULL) {
+ *tmp++ = '\0';
+ if (port == NULL || *port == '\0')
+ port = tmp;
+ }
+
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx", "Address: %s:%s/%s\n",
+ network ? network : "[NIL]", node ? node : "[NIL]",
+ port ? port : "[NIL]"));
+
+ if (network == NULL || *network == '\0')
+ network = "0";
+
+ if (node == NULL || *node == '\0')
+ node = "000000000000";
+
+ if (port == NULL || *port == '\0')
+#define val(x) __STRING(x)
+ port = val(SNMP_IPX_DEFAULT_PORT);
+#undef val
+
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx", "Address: %s:%s/%s\n",
+ network ? network : "[NIL]", node ? node : "[NIL]",
+ port ? port : "[NIL]"));
+
+ if(sscanf(network, "%8lx%*c", &i) == 1) {
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx", "network parsed okay\n"));
+ addr->sipx_network = htonl(i);
+ } else {
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx",
+ "failed to parse network part of address\n"));
+ free(def);
+ free(input);
+ return 0;
+ }
+
+ if(sscanf(node, "%2hhx%2hhx%2hhx%2hhx%2hhx%2hhx%*c",
+ &addr->sipx_node[0], &addr->sipx_node[1],
+ &addr->sipx_node[2], &addr->sipx_node[3],
+ &addr->sipx_node[4], &addr->sipx_node[5]) == 6) {
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx", "node parsed okay\n"));
+ } else {
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx",
+ "failed to parse node part of address\n"));
+ free(def);
+ free(input);
+ return 0;
+ }
+
+ if(sscanf(port, "%lu%*c", &i) == 1) {
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx", "port parsed okay\n"));
+ addr->sipx_port = htons(i);
+ } else {
+ DEBUGMSGTL(("netsnmp_sockaddr_ipx",
+ "failed to parse port part of address\n"));
+ free(def);
+ free(input);
+ return 0;
+ }
+
+ free(def);
+ free(input);
+ return 1;
+}
+
+
+
+int
+netsnmp_sockaddr_ipx(struct sockaddr_ipx *addr, const char *peername)
+{
+ return netsnmp_sockaddr_ipx2(addr, peername, NULL);
+}
+
+
+
+netsnmp_transport *
+netsnmp_ipx_create_tstring(const char *str, int local,
+ const char *default_target)
+{
+ struct sockaddr_ipx addr;
+
+ if (netsnmp_sockaddr_ipx2(&addr, str, default_target)) {
+ return netsnmp_ipx_transport(&addr, local);
+ } else {
+ return NULL;
+ }
+}
+
+
+
+netsnmp_transport *
+netsnmp_ipx_create_ostring(const u_char * o, size_t o_len, int local)
+{
+ struct sockaddr_ipx addr;
+
+ if (o_len == 12) {
+ addr.sipx_family = AF_IPX;
+ memcpy((u_char *) & (addr.sipx_network), &(o[00]), 4);
+ memcpy((u_char *) & (addr.sipx_node), &(o[04]), 6);
+ memcpy((u_char *) & (addr.sipx_port), &(o[10]), 2);
+ return netsnmp_ipx_transport(&addr, local);
+ }
+ return NULL;
+}
+
+
+
+void
+netsnmp_ipx_ctor(void)
+{
+ ipxDomain.name = netsnmpIPXDomain;
+ ipxDomain.name_length = netsnmpIPXDomain_len;
+ ipxDomain.prefix = (const char**)calloc(2, sizeof(char *));
+ ipxDomain.prefix[0] = "ipx";
+
+ ipxDomain.f_create_from_tstring_new = netsnmp_ipx_create_tstring;
+ ipxDomain.f_create_from_ostring = netsnmp_ipx_create_ostring;
+
+ netsnmp_tdomain_register(&ipxDomain);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-18 08:09:57 +0000