314 lines
8.0 KiB
C
314 lines
8.0 KiB
C
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/*
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* udpEndpointTable MIB architecture support
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*
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* $Id$
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*/
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#include <net-snmp/net-snmp-config.h>
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#include <net-snmp/net-snmp-features.h>
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#include <net-snmp/net-snmp-includes.h>
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#include <net-snmp/agent/net-snmp-agent-includes.h>
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#include <net-snmp/library/file_utils.h>
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#include <net-snmp/library/text_utils.h>
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#include <net-snmp/data_access/ipaddress.h>
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#include <net-snmp/data_access/udp_endpoint.h>
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#include "udp-mib/udpEndpointTable/udpEndpointTable_constants.h"
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#include "mibgroup/util_funcs/get_pid_from_inode.h"
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#include "udp_endpoint_private.h"
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#include <fcntl.h>
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netsnmp_feature_require(text_utils)
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netsnmp_feature_child_of(udp_endpoint_all, libnetsnmpmibs)
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netsnmp_feature_child_of(udp_endpoint_writable, udp_endpoint_all)
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static int _load4(netsnmp_container *container, u_int flags);
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#if defined (NETSNMP_ENABLE_IPV6)
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static int _load6(netsnmp_container *container, u_int flags);
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#endif
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/*
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* initialize arch specific storage
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*
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* @retval 0: success
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* @retval <0: error
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*/
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#ifndef NETSNMP_FEATURE_REMOVE_UDP_ENDPOINT_WRITABLE
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int
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netsnmp_arch_udp_endpoint_entry_init(netsnmp_udp_endpoint_entry *entry)
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{
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/*
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* init
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*/
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return 0;
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}
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/*
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* cleanup arch specific storage
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*/
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void
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netsnmp_arch_udp_endpoint_entry_cleanup(netsnmp_udp_endpoint_entry *entry)
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{
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/*
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* cleanup
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*/
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}
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/*
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* copy arch specific storage
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*/
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int
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netsnmp_arch_udp_endpoint_entry_copy(netsnmp_udp_endpoint_entry *lhs,
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netsnmp_udp_endpoint_entry *rhs)
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{
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return 0;
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}
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/*
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* delete an entry
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*/
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int
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netsnmp_arch_udp_endpoint_delete(netsnmp_udp_endpoint_entry *entry)
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{
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if (NULL == entry)
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return -1;
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/** xxx-rks:9 udp_endpoint delete not implemented */
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return -1;
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}
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#endif /* NETSNMP_FEATURE_REMOVE_UDP_ENDPOINT_WRITABLE */
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/**
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*
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* @retval 0 no errors
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* @retval !0 errors
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*/
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int
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netsnmp_arch_udp_endpoint_container_load(netsnmp_container *container,
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u_int load_flags )
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{
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int rc = 0;
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/* Setup the pid_from_inode table, and fill it.*/
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netsnmp_get_pid_from_inode_init();
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rc = _load4(container, load_flags);
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if(rc < 0) {
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u_int flags = NETSNMP_ACCESS_UDP_ENDPOINT_FREE_KEEP_CONTAINER;
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netsnmp_access_udp_endpoint_container_free(container, flags);
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return rc;
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}
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#if defined (NETSNMP_ENABLE_IPV6)
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rc = _load6(container, load_flags);
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if(rc < 0) {
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u_int flags = NETSNMP_ACCESS_UDP_ENDPOINT_FREE_KEEP_CONTAINER;
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netsnmp_access_udp_endpoint_container_free(container, flags);
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return rc;
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}
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#endif
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return 0;
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}
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/**
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* @internal
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* process token value index line
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*/
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static int
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_process_line_udp_ep(netsnmp_line_info *line_info, void *mem,
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struct netsnmp_line_process_info_s* lpi)
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{
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netsnmp_udp_endpoint_entry *ep = (netsnmp_udp_endpoint_entry *)mem;
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char *ptr, *sep;
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u_char *u_ptr;
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size_t u_ptr_len, offset, len;
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unsigned long long inode;
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size_t count = 0;
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/*
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* skip 'sl'
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*/
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ptr = skip_not_white(line_info->start);
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if (NULL == ptr) {
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DEBUGMSGTL(("access:udp_endpoint", "no sl '%s'\n",
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line_info->start));
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return PMLP_RC_MEMORY_UNUSED;
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}
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ptr = skip_white(ptr);
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if (NULL == ptr) {
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DEBUGMSGTL(("text:util:tvi", "no space after sl '%s'\n",
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line_info->start));
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return PMLP_RC_MEMORY_UNUSED;
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}
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/*
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* get local address. ignore error on hex conversion, since that
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* function doesn't like the ':' between address and port. check the
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* offset to see if it worked. May need to flip string too.
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*/
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u_ptr = ep->loc_addr;
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u_ptr_len = sizeof(ep->loc_addr);
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sep = strchr(ptr, ':');
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if (NULL == sep) {
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DEBUGMSGTL(("text:util:tvi", "no ':' '%s'\n",
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line_info->start));
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return PMLP_RC_MEMORY_UNUSED;
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}
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len = (sep - ptr);
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if (-1 == netsnmp_addrstr_hton(ptr, len)) {
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DEBUGMSGTL(("text:util:tvi", "bad length %d for loc addr '%s'\n",
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(int)u_ptr_len, line_info->start));
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return PMLP_RC_MEMORY_UNUSED;
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}
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offset = 0;
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netsnmp_hex_to_binary(&u_ptr, &u_ptr_len, &offset, 0, ptr, NULL);
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if ((4 != offset) && (16 != offset)) {
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DEBUGMSGTL(("text:util:tvi", "bad offset %d for loc addr '%s'\n",
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(int)offset, line_info->start));
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return PMLP_RC_MEMORY_UNUSED;
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}
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ep->loc_addr_len = offset;
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ptr += (offset * 2);
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++ptr; /* skip ':' */
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/*
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* get local port
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*/
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ep->loc_port = strtol(ptr, &ptr, 16);
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ptr = skip_white(ptr);
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/*
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* get remote address. ignore error on hex conversion, since that
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* function doesn't like the ':' between address and port. check the
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* offset to see if it worked. May need to flip string too.
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*/
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u_ptr = ep->rmt_addr;
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u_ptr_len = sizeof(ep->rmt_addr);
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sep = strchr(ptr, ':');
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if (NULL == sep) {
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DEBUGMSGTL(("text:util:tvi", "no ':' '%s'\n",
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line_info->start));
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return PMLP_RC_MEMORY_UNUSED;
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}
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len = (sep - ptr);
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if (-1 == netsnmp_addrstr_hton(ptr, len)) {
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DEBUGMSGTL(("text:util:tvi", "bad length %d for rmt addr '%s'\n",
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(int)u_ptr_len, line_info->start));
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return PMLP_RC_MEMORY_UNUSED;
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}
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offset = 0;
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netsnmp_hex_to_binary(&u_ptr, &u_ptr_len, &offset, 0, ptr, NULL);
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if ((4 != offset) && (16 != offset)) {
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DEBUGMSGTL(("text:util:tvi", "bad offset %d for rmt addr '%s'\n",
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(int)offset, line_info->start));
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return PMLP_RC_MEMORY_UNUSED;
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}
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ep->rmt_addr_len = offset;
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ptr += (offset * 2);
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++ptr; /* skip ':' */
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/*
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* get remote port
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*/
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ep->rmt_port = strtol(ptr, &ptr, 16);
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ptr = skip_white(ptr);
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/*
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* get state too
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*/
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ep->state = strtol(ptr, &ptr, 16);
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/*
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* Use inode as instance value.
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*/
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while (count != 5) {
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ptr = skip_white(ptr);
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ptr = skip_not_white(ptr);
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count++;
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}
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inode = strtoull(ptr, &ptr, 0);
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ep->instance = (u_int)inode;
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/*
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* get the pid also
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*/
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ep->pid = netsnmp_get_pid_from_inode(inode);
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ep->index = (uintptr_t)(lpi->user_context);
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lpi->user_context = (void*)((char*)(lpi->user_context) + 1);
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ep->oid_index.oids = &ep->index;
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ep->oid_index.len = 1;
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return PMLP_RC_MEMORY_USED;
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}
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/**
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*
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* @retval 0 no errors
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* @retval !0 errors
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*/
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static int
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_load4(netsnmp_container *container, u_int load_flags)
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{
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netsnmp_file *fp;
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netsnmp_line_process_info lpi;
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if (NULL == container)
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return -1;
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/*
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* allocate file resources
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*/
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fp = netsnmp_file_fill(NULL, "/proc/net/udp" , O_RDONLY, 0, 0);
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if (NULL == fp) /** msg already logged */
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return -2;
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memset(&lpi, 0x0, sizeof(lpi));
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lpi.mem_size = sizeof(netsnmp_udp_endpoint_entry);
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lpi.process = _process_line_udp_ep;
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lpi.user_context = (void*)0;
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container = netsnmp_file_text_parse(fp, container, PM_USER_FUNCTION,
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0, &lpi);
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netsnmp_file_release(fp);
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return (NULL == container);
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}
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#if defined (NETSNMP_ENABLE_IPV6)
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/**
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*
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* @retval 0 no errors
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* @retval !0 errors
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*/
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static int
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_load6(netsnmp_container *container, u_int load_flags)
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{
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netsnmp_file *fp;
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netsnmp_line_process_info lpi;
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if (NULL == container)
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return -1;
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/*
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* allocate file resources
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*/
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fp = netsnmp_file_fill(NULL, "/proc/net/udp6" , O_RDONLY, 0, 0);
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if (NULL == fp) /** msg already logged */
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return -2;
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memset(&lpi, 0x0, sizeof(lpi));
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lpi.mem_size = sizeof(netsnmp_udp_endpoint_entry);
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lpi.process = _process_line_udp_ep;
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lpi.user_context = (void*)CONTAINER_SIZE(container);
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container = netsnmp_file_text_parse(fp, container, PM_USER_FUNCTION,
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0, &lpi);
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netsnmp_file_release(fp);
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return (NULL == container);
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}
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#endif /* NETSNMP_ENABLE_IPV6 */
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