| #include <net-snmp/net-snmp-config.h> |
| |
| #include <net-snmp/library/snmpUDPIPv6Domain.h> |
| |
| #include <net-snmp/types.h> |
| |
| #ifdef NETSNMP_TRANSPORT_UDPIPV6_DOMAIN |
| |
| #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 |
| #include <stddef.h> |
| #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 defined(HAVE_WINSOCK_H) && !defined(mingw32) |
| static const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT; |
| #endif |
| |
| #if HAVE_NETINET_IN_H |
| #include <netinet/in.h> |
| #endif |
| #if HAVE_ARPA_INET_H |
| #include <arpa/inet.h> |
| #endif |
| #if HAVE_NETDB_H |
| #include <netdb.h> |
| #endif |
| #if HAVE_NET_IF_H |
| #include <net/if.h> |
| #endif |
| |
| #if HAVE_DMALLOC_H |
| #include <dmalloc.h> |
| #endif |
| |
| #if HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY |
| #define SS_FAMILY ss_family |
| #elif HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY |
| #define SS_FAMILY __ss_family |
| #endif |
| |
| #if defined(darwin) |
| #include <stdint.h> /* for uint8_t */ |
| #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/snmpSocketBaseDomain.h> |
| |
| #include "inet_ntop.h" |
| #include "inet_pton.h" |
| |
| oid netsnmp_UDPIPv6Domain[] = { TRANSPORT_DOMAIN_UDP_IPV6 }; |
| static netsnmp_tdomain udp6Domain; |
| |
| /* |
| * from snmpUDPDomain. not static, but not public, either. |
| * (ie don't put it in a public header.) |
| */ |
| extern void _netsnmp_udp_sockopt_set(int fd, int server); |
| |
| /* |
| * Return a string representing the address in data, or else the "far end" |
| * address if data is NULL. |
| */ |
| |
| static char * |
| netsnmp_udp6_fmtaddr(netsnmp_transport *t, void *data, int len) |
| { |
| return netsnmp_ipv6_fmtaddr("UDP/IPv6", t, data, len); |
| } |
| |
| |
| |
| /* |
| * 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_udp6_recv(netsnmp_transport *t, void *buf, int size, |
| void **opaque, int *olength) |
| { |
| int rc = -1; |
| socklen_t fromlen = sizeof(struct sockaddr_in6); |
| struct sockaddr *from; |
| |
| if (t != NULL && t->sock >= 0) { |
| from = (struct sockaddr *) malloc(sizeof(struct sockaddr_in6)); |
| 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) { |
| DEBUGIF("netsnmp_udp6") { |
| char *str = netsnmp_udp6_fmtaddr(NULL, from, fromlen); |
| DEBUGMSGTL(("netsnmp_udp6", |
| "recvfrom fd %d got %d bytes (from %s)\n", t->sock, |
| rc, str)); |
| free(str); |
| } |
| } else { |
| DEBUGMSGTL(("netsnmp_udp6", "recvfrom fd %d err %d (\"%s\")\n", |
| t->sock, errno, strerror(errno))); |
| } |
| *opaque = (void *) from; |
| *olength = sizeof(struct sockaddr_in6); |
| } |
| return rc; |
| } |
| |
| |
| |
| static int |
| netsnmp_udp6_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_in6)) { |
| to = (struct sockaddr *) (*opaque); |
| } else if (t != NULL && t->data != NULL && |
| t->data_length == sizeof(struct sockaddr_in6)) { |
| to = (struct sockaddr *) (t->data); |
| } |
| |
| if (to != NULL && t != NULL && t->sock >= 0) { |
| DEBUGIF("netsnmp_udp6") { |
| char *str = netsnmp_udp6_fmtaddr(NULL, (void *)to, |
| sizeof(struct sockaddr_in6)); |
| DEBUGMSGTL(("netsnmp_udp6", |
| "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_in6)); |
| if (rc < 0 && errno != EINTR) { |
| break; |
| } |
| } |
| } |
| return rc; |
| } |
| |
| |
| /* |
| * Open a UDP/IPv6-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_udp6_transport(struct sockaddr_in6 *addr, int local) |
| { |
| netsnmp_transport *t = NULL; |
| int rc = 0; |
| |
| if (addr == NULL || addr->sin6_family != AF_INET6) { |
| return NULL; |
| } |
| |
| t = (netsnmp_transport *) malloc(sizeof(netsnmp_transport)); |
| if (t == NULL) { |
| return NULL; |
| } |
| |
| DEBUGIF("netsnmp_udp6") { |
| char *str = netsnmp_udp6_fmtaddr(NULL, (void *) addr, |
| sizeof(struct sockaddr_in6)); |
| DEBUGMSGTL(("netsnmp_udp6", "open %s %s\n", local ? "local" : "remote", |
| str)); |
| free(str); |
| } |
| |
| memset(t, 0, sizeof(netsnmp_transport)); |
| |
| t->domain = netsnmp_UDPIPv6Domain; |
| t->domain_length = |
| sizeof(netsnmp_UDPIPv6Domain) / sizeof(netsnmp_UDPIPv6Domain[0]); |
| |
| t->sock = socket(PF_INET6, SOCK_DGRAM, 0); |
| if (t->sock < 0) { |
| netsnmp_transport_free(t); |
| return NULL; |
| } |
| |
| _netsnmp_udp_sockopt_set(t->sock, local); |
| |
| if (local) { |
| /* |
| * This session is inteneded as a server, so we must bind on to the |
| * given IP address, which may include an interface address, or could |
| * be INADDR_ANY, but certainly includes a port number. |
| */ |
| |
| #ifdef IPV6_V6ONLY |
| /* Try to restrict PF_INET6 socket to IPv6 communications only. */ |
| { |
| int one=1; |
| if (setsockopt(t->sock, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&one, sizeof(one)) != 0) { |
| DEBUGMSGTL(("netsnmp_udp6", "couldn't set IPV6_V6ONLY to %d bytes: %s\n", one, strerror(errno))); |
| } |
| } |
| #endif |
| |
| rc = bind(t->sock, (struct sockaddr *) addr, |
| sizeof(struct sockaddr_in6)); |
| if (rc != 0) { |
| netsnmp_socketbase_close(t); |
| netsnmp_transport_free(t); |
| return NULL; |
| } |
| t->local = (unsigned char*)malloc(18); |
| if (t->local == NULL) { |
| netsnmp_socketbase_close(t); |
| netsnmp_transport_free(t); |
| return NULL; |
| } |
| memcpy(t->local, addr->sin6_addr.s6_addr, 16); |
| t->local[16] = (addr->sin6_port & 0xff00) >> 8; |
| t->local[17] = (addr->sin6_port & 0x00ff) >> 0; |
| t->local_length = 18; |
| t->data = NULL; |
| t->data_length = 0; |
| } else { |
| /* |
| * This is a client session. Save the address in the |
| * transport-specific data pointer for later use by netsnmp_udp6_send. |
| */ |
| |
| t->data = malloc(sizeof(struct sockaddr_in6)); |
| if (t->data == NULL) { |
| netsnmp_socketbase_close(t); |
| netsnmp_transport_free(t); |
| return NULL; |
| } |
| memcpy(t->data, addr, sizeof(struct sockaddr_in6)); |
| t->data_length = sizeof(struct sockaddr_in6); |
| t->remote = (unsigned char*)malloc(18); |
| if (t->remote == NULL) { |
| netsnmp_socketbase_close(t); |
| netsnmp_transport_free(t); |
| return NULL; |
| } |
| memcpy(t->remote, addr->sin6_addr.s6_addr, 16); |
| t->remote[16] = (addr->sin6_port & 0xff00) >> 8; |
| t->remote[17] = (addr->sin6_port & 0x00ff) >> 0; |
| t->remote_length = 18; |
| } |
| |
| /* |
| * 16-bit length field, 8 byte UDP header, 40 byte IPv6 header. |
| */ |
| |
| t->msgMaxSize = 0xffff - 8 - 40; |
| t->f_recv = netsnmp_udp6_recv; |
| t->f_send = netsnmp_udp6_send; |
| t->f_close = netsnmp_socketbase_close; |
| t->f_accept = NULL; |
| t->f_fmtaddr = netsnmp_udp6_fmtaddr; |
| |
| return t; |
| } |
| |
| |
| #if !defined(NETSNMP_DISABLE_SNMPV1) || !defined(NETSNMP_DISABLE_SNMPV2C) |
| /* |
| * The following functions provide the "com2sec6" configuration token |
| * functionality for compatibility. |
| */ |
| |
| #define EXAMPLE_NETWORK "NETWORK" |
| #define EXAMPLE_COMMUNITY "COMMUNITY" |
| |
| typedef struct com2Sec6Entry_s { |
| const char *secName; |
| const char *contextName; |
| struct com2Sec6Entry_s *next; |
| struct in6_addr network; |
| struct in6_addr mask; |
| const char community[1]; |
| } com2Sec6Entry; |
| |
| static com2Sec6Entry *com2Sec6List = NULL, *com2Sec6ListLast = NULL; |
| |
| |
| NETSNMP_STATIC_INLINE int |
| create_com2Sec6Entry(const struct addrinfo* const run, |
| const struct in6_addr* const mask, |
| const char* const secName, |
| const size_t secNameLen, |
| const char* const contextName, |
| const size_t contextNameLen, |
| const char* const community, |
| const size_t communityLen, |
| com2Sec6Entry** const begin, |
| com2Sec6Entry** const end) |
| { |
| const struct sockaddr_in6 * const run_addr = |
| (const struct sockaddr_in6*)run->ai_addr; |
| int i; |
| |
| /* Check that the network and mask are consistent. */ |
| for (i = 0; i < 16; ++i) { |
| if (run_addr->sin6_addr.s6_addr[i] & ~mask->s6_addr[i]) { |
| config_perror("source/mask mismatch"); |
| return 1; |
| } |
| } |
| |
| { |
| char buf1[INET6_ADDRSTRLEN]; |
| char buf2[INET6_ADDRSTRLEN]; |
| DEBUGMSGTL(("netsnmp_udp6_parse_security", |
| "<\"%s\", %s/%s> => \"%s\"\n", |
| community, |
| inet_ntop(AF_INET6, &run_addr->sin6_addr, |
| buf1, sizeof(buf1)), |
| inet_ntop(AF_INET6, mask, buf2, sizeof(buf2)), |
| secName)); |
| } |
| |
| { |
| /* Allocate all the needed chunks */ |
| void * const v = |
| malloc(offsetof(com2Sec6Entry, community) + communityLen + |
| secNameLen + contextNameLen); |
| |
| com2Sec6Entry* const e = (com2Sec6Entry*)v; |
| char *last = ((char*)v) + offsetof(com2Sec6Entry, community); |
| |
| if (v == NULL) { |
| config_perror("memory error"); |
| return 1; |
| } |
| |
| memcpy(last, community, communityLen); |
| last += communityLen; |
| |
| memcpy(last, secName, secNameLen); |
| e->secName = last; |
| last += secNameLen; |
| |
| if (contextNameLen) { |
| memcpy(last, contextName, contextNameLen); |
| e->contextName = last; |
| } else |
| e->contextName = last - 1; |
| |
| memcpy(&e->network, &run_addr->sin6_addr, sizeof(struct in6_addr)); |
| memcpy(&e->mask, mask, sizeof(struct in6_addr)); |
| |
| e->next = NULL; |
| if (*end != NULL) { |
| (*end)->next = e; |
| *end = e; |
| } else { |
| *end = *begin = e; |
| } |
| } |
| return 0; |
| } |
| |
| void |
| netsnmp_udp6_parse_security(const char *token, char *param) |
| { |
| char secName[VACMSTRINGLEN + 1]; |
| size_t secNameLen; |
| char contextName[VACMSTRINGLEN + 1]; |
| size_t contextNameLen; |
| char community[COMMUNITY_MAX_LEN + 1]; |
| size_t communityLen; |
| char source[300]; /* dns-name(253)+/(1)+mask(45)+\0(1) */ |
| struct in6_addr mask; |
| |
| /* |
| * Get security, source address/netmask and community strings. |
| */ |
| |
| param = copy_nword( param, secName, sizeof(secName)); |
| if (strcmp(secName, "-Cn") == 0) { |
| if (!param) { |
| config_perror("missing CONTEXT_NAME parameter"); |
| return; |
| } |
| param = copy_nword( param, contextName, sizeof(contextName)); |
| contextNameLen = strlen(contextName) + 1; |
| if (contextNameLen > VACMSTRINGLEN) { |
| config_perror("context name too long"); |
| return; |
| } |
| if (!param) { |
| config_perror("missing NAME parameter"); |
| return; |
| } |
| param = copy_nword( param, secName, sizeof(secName)); |
| } else { |
| contextNameLen = 0; |
| } |
| |
| secNameLen = strlen(secName) + 1; |
| if (secNameLen == 1) { |
| config_perror("empty NAME parameter"); |
| return; |
| } else if (secNameLen > VACMSTRINGLEN) { |
| config_perror("security name too long"); |
| return; |
| } |
| |
| if (!param) { |
| config_perror("missing SOURCE parameter"); |
| return; |
| } |
| param = copy_nword( param, source, sizeof(source)); |
| if (source[0] == '\0') { |
| config_perror("empty SOURCE parameter"); |
| return; |
| } |
| if (strncmp(source, EXAMPLE_NETWORK, strlen(EXAMPLE_NETWORK)) == 0) { |
| config_perror("example config NETWORK not properly configured"); |
| return; |
| } |
| |
| if (!param) { |
| config_perror("missing COMMUNITY parameter"); |
| return; |
| } |
| param = copy_nword( param, community, sizeof(community)); |
| if (community[0] == '\0') { |
| config_perror("empty COMMUNITY parameter"); |
| return; |
| } |
| communityLen = strlen(community) + 1; |
| if (communityLen >= COMMUNITY_MAX_LEN) { |
| config_perror("community name too long"); |
| return; |
| } |
| if (communityLen == sizeof(EXAMPLE_COMMUNITY) && |
| memcmp(community, EXAMPLE_COMMUNITY, sizeof(EXAMPLE_COMMUNITY)) == 0) { |
| config_perror("example config COMMUNITY not properly configured"); |
| return; |
| } |
| |
| /* Possible mask cases |
| * "default" <=> 0::0/0 |
| * <hostname>[/] <=> <hostname>/128 |
| * <hostname>/number <=> <hostname>/number |
| * <hostname>/<mask> <=> <hostname>/<mask> |
| */ |
| { |
| /* Deal with the "default" case first. */ |
| const int isdefault = strcmp(source, "default") == 0; |
| |
| if (isdefault) { |
| memset(mask.s6_addr, '\0', sizeof(mask.s6_addr)); |
| } else { |
| /* Split the source/netmask parts */ |
| char *strmask = strchr(source, '/'); |
| if (strmask != NULL) |
| /* Mask given. */ |
| *strmask++ = '\0'; |
| |
| /* Try to interpret the mask */ |
| if (strmask == NULL || *strmask == '\0') { |
| /* No mask was given. Assume /128 */ |
| memset(mask.s6_addr, '\xff', sizeof(mask.s6_addr)); |
| } else { |
| /* Try to interpret mask as a "number of 1 bits". */ |
| char* cp; |
| long masklength = strtol(strmask, &cp, 10); |
| if (*cp == '\0') { |
| if (0 <= masklength && masklength <= 128) { |
| const int j = masklength / 8; |
| const int jj = masklength % 8; |
| memset(mask.s6_addr, '\xff', j); |
| if (j < 16) { |
| mask.s6_addr[j] = ((uint8_t)~0U << (8 - jj)); |
| memset(mask.s6_addr + j + 1, '\0', 15 - j); |
| } |
| } else { |
| config_perror("bad mask length"); |
| return; |
| } |
| } |
| /* Try to interpret mask numerically. */ |
| else if (inet_pton(AF_INET6, strmask, &mask) != 1) { |
| config_perror("bad mask"); |
| return; |
| } |
| } |
| } |
| |
| { |
| struct sockaddr_in6 pton_addr; |
| struct addrinfo hints, *res = NULL; |
| memset(&hints, '\0', sizeof(hints)); |
| |
| /* First check if default, otherwise try to parse as a numeric |
| * address, if that also fails try to lookup the address */ |
| if (isdefault) { |
| memset(&pton_addr.sin6_addr.s6_addr, '\0', |
| sizeof(struct in6_addr)); |
| } else if (inet_pton(AF_INET6, source, &pton_addr.sin6_addr) != 1) { |
| /* Nope, wasn't a numeric address. Must be a hostname. */ |
| #if HAVE_GETADDRINFO |
| int gai_error; |
| |
| hints.ai_family = AF_INET6; |
| hints.ai_socktype = SOCK_DGRAM; |
| gai_error = getaddrinfo(source, NULL, &hints, &res); |
| if (gai_error != 0) { |
| config_perror(gai_strerror(gai_error)); |
| return; |
| } |
| #else |
| config_perror("getaddrinfo() not available"); |
| return; |
| #endif |
| } |
| if (res == NULL) { |
| hints.ai_addrlen = sizeof(pton_addr); |
| hints.ai_addr = (struct sockaddr*)&pton_addr; |
| hints.ai_next = NULL; |
| res = &hints; |
| } |
| |
| { |
| struct addrinfo *run; |
| int failed = 0; |
| com2Sec6Entry *begin = NULL, *end = NULL; |
| |
| for (run = res; run && !failed; run = run->ai_next) |
| failed = |
| create_com2Sec6Entry(run, &mask, |
| secName, secNameLen, |
| contextName, contextNameLen, |
| community, communityLen, |
| &begin, &end); |
| |
| if (failed) { |
| /* Free eventually allocated chunks */ |
| while (begin) { |
| end = begin; |
| begin = begin->next; |
| free(end); |
| } |
| } else if (com2Sec6ListLast != NULL) { |
| com2Sec6ListLast->next = begin; |
| com2Sec6ListLast = end; |
| } else { |
| com2Sec6List = begin; |
| com2Sec6ListLast = end; |
| } |
| } |
| #if HAVE_GETADDRINFO |
| if (res != &hints) |
| freeaddrinfo(res); |
| #endif |
| } |
| } |
| } |
| |
| void |
| netsnmp_udp6_com2Sec6List_free(void) |
| { |
| com2Sec6Entry *e = com2Sec6List; |
| while (e != NULL) { |
| com2Sec6Entry *tmp = e; |
| e = e->next; |
| free(tmp); |
| } |
| com2Sec6List = com2Sec6ListLast = NULL; |
| } |
| |
| #endif /* support for community based SNMP */ |
| |
| void |
| netsnmp_udp6_agent_config_tokens_register(void) |
| { |
| #if !defined(NETSNMP_DISABLE_SNMPV1) || !defined(NETSNMP_DISABLE_SNMPV2C) |
| register_app_config_handler("com2sec6", netsnmp_udp6_parse_security, |
| netsnmp_udp6_com2Sec6List_free, |
| "[-Cn CONTEXT] secName IPv6-network-address[/netmask] community"); |
| #endif /* support for community based SNMP */ |
| } |
| |
| |
| |
| #if !defined(NETSNMP_DISABLE_SNMPV1) || !defined(NETSNMP_DISABLE_SNMPV2C) |
| |
| /* |
| * Return 0 if there are no com2sec entries, or return 1 if there ARE com2sec |
| * entries. On return, if a com2sec entry matched the passed parameters, |
| * then *secName points at the appropriate security name, or is NULL if the |
| * parameters did not match any com2sec entry. |
| */ |
| |
| int |
| netsnmp_udp6_getSecName(void *opaque, int olength, |
| const char *community, |
| int community_len, |
| const char **secName, const char **contextName) |
| { |
| const com2Sec6Entry *c; |
| struct sockaddr_in6 *from = (struct sockaddr_in6 *) opaque; |
| char *ztcommunity = NULL; |
| char str6[INET6_ADDRSTRLEN]; |
| |
| if (secName != NULL) { |
| *secName = NULL; /* Haven't found anything yet */ |
| } |
| |
| /* |
| * Special case if there are NO entries (as opposed to no MATCHING |
| * entries). |
| */ |
| |
| if (com2Sec6List == NULL) { |
| DEBUGMSGTL(("netsnmp_udp6_getSecName", "no com2sec entries\n")); |
| return 0; |
| } |
| |
| /* |
| * If there is no IPv6 source address, then there can be no valid security |
| * name. |
| */ |
| |
| if (opaque == NULL || olength != sizeof(struct sockaddr_in6) |
| || from->sin6_family != PF_INET6) { |
| DEBUGMSGTL(("netsnmp_udp6_getSecName", |
| "no IPv6 source address in PDU?\n")); |
| return 1; |
| } |
| |
| ztcommunity = (char *) malloc(community_len + 1); |
| if (ztcommunity != NULL) { |
| memcpy(ztcommunity, community, community_len); |
| ztcommunity[community_len] = '\0'; |
| } |
| |
| inet_ntop(AF_INET6, &from->sin6_addr, str6, sizeof(str6)); |
| DEBUGMSGTL(("netsnmp_udp6_getSecName", "resolve <\"%s\", %s>\n", |
| ztcommunity ? ztcommunity : "<malloc error>", str6)); |
| |
| for (c = com2Sec6List; c != NULL; c = c->next) { |
| { |
| char buf1[INET6_ADDRSTRLEN]; |
| char buf2[INET6_ADDRSTRLEN]; |
| DEBUGMSGTL(("netsnmp_udp6_getSecName", |
| "compare <\"%s\", %s/%s>", c->community, |
| inet_ntop(AF_INET6, &c->network, buf1, sizeof(buf1)), |
| inet_ntop(AF_INET6, &c->mask, buf2, sizeof(buf2)))); |
| } |
| if ((community_len == (int)strlen(c->community)) && |
| (memcmp(community, c->community, community_len) == 0)) { |
| int i, ok = 1; |
| for (i = 0; ok && i < 16; ++i) |
| if ((from->sin6_addr.s6_addr[i] & c->mask.s6_addr[i]) != |
| c->network.s6_addr[i]) |
| ok = 0; |
| if (ok) { |
| DEBUGMSG(("netsnmp_udp6_getSecName", "... SUCCESS\n")); |
| if (secName != NULL) { |
| *secName = c->secName; |
| *contextName = c->contextName; |
| } |
| } |
| } |
| } |
| DEBUGMSG(("netsnmp_udp6_getSecName", "... nope\n")); |
| |
| if (ztcommunity != NULL) { |
| free(ztcommunity); |
| } |
| return 1; |
| } |
| #endif /* support for community based SNMP */ |
| |
| netsnmp_transport * |
| netsnmp_udp6_create_tstring(const char *str, int local, |
| const char *default_target) |
| { |
| struct sockaddr_in6 addr; |
| |
| if (netsnmp_sockaddr_in6_2(&addr, str, default_target)) { |
| return netsnmp_udp6_transport(&addr, local); |
| } else { |
| return NULL; |
| } |
| } |
| |
| |
| /* |
| * See: |
| * |
| * http://www.ietf.org/internet-drafts/draft-ietf-ops-taddress-mib-01.txt |
| * |
| * (or newer equivalent) for details of the TC which we are using for |
| * the mapping here. |
| */ |
| |
| netsnmp_transport * |
| netsnmp_udp6_create_ostring(const u_char * o, size_t o_len, int local) |
| { |
| struct sockaddr_in6 addr; |
| |
| if (o_len == 18) { |
| memset((u_char *) & addr, 0, sizeof(struct sockaddr_in6)); |
| addr.sin6_family = AF_INET6; |
| memcpy((u_char *) & (addr.sin6_addr.s6_addr), o, 16); |
| addr.sin6_port = (o[16] << 8) + o[17]; |
| return netsnmp_udp6_transport(&addr, local); |
| } |
| return NULL; |
| } |
| |
| |
| void |
| netsnmp_udpipv6_ctor(void) |
| { |
| udp6Domain.name = netsnmp_UDPIPv6Domain; |
| udp6Domain.name_length = sizeof(netsnmp_UDPIPv6Domain) / sizeof(oid); |
| udp6Domain.f_create_from_tstring = NULL; |
| udp6Domain.f_create_from_tstring_new = netsnmp_udp6_create_tstring; |
| udp6Domain.f_create_from_ostring = netsnmp_udp6_create_ostring; |
| udp6Domain.prefix = (const char**)calloc(5, sizeof(char *)); |
| udp6Domain.prefix[0] = "udp6"; |
| udp6Domain.prefix[1] = "ipv6"; |
| udp6Domain.prefix[2] = "udpv6"; |
| udp6Domain.prefix[3] = "udpipv6"; |
| |
| netsnmp_tdomain_register(&udp6Domain); |
| } |
| |
| #else |
| |
| #ifdef NETSNMP_DLL |
| /* need this hook for win32 MSVC++ DLL build */ |
| void |
| netsnmp_udp6_agent_config_tokens_register(void) |
| { } |
| #endif |
| |
| #endif /* NETSNMP_TRANSPORT_UDPIPV6_DOMAIN */ |
| |
