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https://github.com/lwip-tcpip/lwip.git
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Fixed up mib_external_node support, snmpwalk works for external objects.
This commit is contained in:
christiaans
parent
f7881e58bb
commit
2539b5cf61
@ -38,7 +38,7 @@
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#include "lwip/snmp_structs.h"
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#include "lwip/mem.h"
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#define TODO_GETNEXT_MIB_NODE_EX 0
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/** .iso.org.dod.internet address prefix, @see snmp_iso_*() */
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const s32_t prefix[4] = {1, 3, 6, 1};
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@ -51,6 +51,8 @@ struct nse
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struct mib_node* r_ptr;
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/** right child identifier */
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s32_t r_id;
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/** right child next level */
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u8_t r_nl;
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};
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static u8_t node_stack_cnt = 0;
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static struct nse node_stack[NODE_STACK_SIZE];
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@ -62,6 +64,7 @@ static void
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push_node(struct nse* node)
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{
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LWIP_ASSERT("node_stack_cnt < NODE_STACK_SIZE",node_stack_cnt < NODE_STACK_SIZE);
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("push_node() node=%p id=%"S32_F"\n",(void*)(node->r_ptr),node->r_id));
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if (node_stack_cnt < NODE_STACK_SIZE)
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{
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node_stack[node_stack_cnt] = *node;
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@ -80,6 +83,7 @@ pop_node(struct nse* node)
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node_stack_cnt--;
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*node = node_stack[node_stack_cnt];
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}
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("pop_node() node=%p id=%"S32_F"\n",(void *)(node->r_ptr),node->r_id));
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}
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/**
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@ -671,6 +675,15 @@ empty_table(struct mib_node *node)
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empty = 1;
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}
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}
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else if (node_type == MIB_NODE_EX)
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{
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struct mib_external_node *en;
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en = (struct mib_external_node *)node;
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if (en->tree_levels == 0)
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{
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empty = 1;
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}
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}
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}
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return empty;
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}
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@ -715,14 +728,21 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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{
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("leaf node\n"));
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/* leaf node (e.g. in a fixed size table) */
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if ((i + 1) < an->maxlength)
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if (an->objid[i] > *ident)
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{
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return (struct mib_node*)an;
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}
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else if ((i + 1) < an->maxlength)
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{
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/* an->objid[i] == *ident */
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(oidret->len)--;
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oidret->id[oidret->len] = an->objid[i + 1];
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(oidret->len)++;
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return (struct mib_node*)an;
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}
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else
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{
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/* (i + 1) == an->maxlength */
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(oidret->len)--;
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climb_tree = 1;
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}
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@ -743,12 +763,12 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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{
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cur_node.r_ptr = an->nptr[j];
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cur_node.r_id = an->objid[j];
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cur_node.r_nl = 0;
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}
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else
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{
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cur_node.r_ptr = NULL;
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}
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("expand, push_node() node=%p id=%"S32_F"\n",(void*)cur_node.r_ptr,cur_node.r_id));
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push_node(&cur_node);
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if (an->objid[i] == *ident)
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{
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@ -825,16 +845,21 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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if (ln->nptr == NULL)
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{
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/* leaf node */
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if (ln->next != NULL)
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if (ln->objid > *ident)
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{
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return (struct mib_node*)lrn;
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}
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else if (ln->next != NULL)
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{
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/* ln->objid == *ident */
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(oidret->len)--;
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oidret->id[oidret->len] = ln->next->objid;
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(oidret->len)++;
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("ln->next != NULL\n"));
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return (struct mib_node*)lrn;
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}
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else
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{
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/* ln->next == NULL */
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(oidret->len)--;
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climb_tree = 1;
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}
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@ -854,12 +879,12 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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{
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cur_node.r_ptr = jn->nptr;
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cur_node.r_id = jn->objid;
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cur_node.r_nl = 0;
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}
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else
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{
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cur_node.r_ptr = NULL;
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}
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("expand, push_node() node=%p id=%"S32_F"\n",(void*)cur_node.r_ptr,cur_node.r_id));
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push_node(&cur_node);
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if (ln->objid == *ident)
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{
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@ -915,10 +940,10 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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}
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}
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}
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#if TODO_GETNEXT_MIB_NODE_EX
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else if(node_type == MIB_NODE_EX)
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{
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struct mib_external_node *en;
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s32_t ex_id;
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/* external node (addressing and access via functions) */
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en = (struct mib_external_node *)node;
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@ -935,22 +960,31 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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if (i < len)
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{
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/* add identifier to oidret */
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en->get_objid(en->addr_inf,ext_level,i,&oidret->id[oidret->len]);
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("en->objid[%"U16_F"]==%"S32_F" *ident==%"S32_F"\n",i,oidret->id[oidret->len],*ident));
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en->get_objid(en->addr_inf,ext_level,i,&ex_id);
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("en->objid[%"U16_F"]==%"S32_F" *ident==%"S32_F"\n",i,ex_id,*ident));
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oidret->id[oidret->len] = ex_id;
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(oidret->len)++;
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if ((ext_level + 1) == en->tree_levels)
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{
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("leaf node\n"));
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/* leaf node */
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if ((i + 1) < len)
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if (ex_id > *ident)
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{
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return (struct mib_node*)en;
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}
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else if ((i + 1) < len)
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{
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/* ex_id == *ident */
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en->get_objid(en->addr_inf,ext_level,i + 1,&ex_id);
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(oidret->len)--;
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en->get_objid(en->addr_inf,ext_level,i + 1,&oidret->id[oidret->len]);
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oidret->id[oidret->len] = ex_id;
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(oidret->len)++;
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return (struct mib_node*)en;
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}
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else
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{
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/* (i + 1) == len */
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(oidret->len)--;
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climb_tree = 1;
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}
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@ -963,21 +997,17 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("non-leaf node\n"));
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/* non-leaf, store right child ptr and id */
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j = i + 1;
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while (j < len)
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{
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j++;
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}
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if (j < len)
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{
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/* right node is the current external node (@todo save j and level) */
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/* right node is the current external node */
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cur_node.r_ptr = node;
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en->get_objid(en->addr_inf,ext_level,j,&cur_node.r_id);
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cur_node.r_nl = ext_level + 1;
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}
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else
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{
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cur_node.r_ptr = NULL;
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}
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("expand, push_node() node=%p id=%"S32_F"\n",(void*)cur_node.r_ptr,cur_node.r_id));
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push_node(&cur_node);
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if (en->ident_cmp(en->addr_inf,ext_level,i,*ident) == 0)
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{
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@ -1002,8 +1032,9 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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else
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{
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/* ident_len == 0, complete with leftmost '.thing' */
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en->get_objid(en->addr_inf,ext_level,0,&oidret->id[oidret->len]);
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("left en->objid==%"S32_F"\n",oidret->id[oidret->len]));
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en->get_objid(en->addr_inf,ext_level,0,&ex_id);
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("left en->objid==%"S32_F"\n",ex_id));
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oidret->id[oidret->len] = ex_id;
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(oidret->len)++;
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if ((ext_level + 1) == en->tree_levels)
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{
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@ -1018,7 +1049,6 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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}
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}
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}
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#endif
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else if(node_type == MIB_NODE_SC)
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{
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mib_scalar_node *sn;
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@ -1056,7 +1086,6 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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while ((node_stack_cnt > 0) && (child.r_ptr == NULL))
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{
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pop_node(&child);
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("expand, pop_node() node=%p id=%"S32_F"\n",(void *)child.r_ptr, child.r_id));
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/* trim returned oid */
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(oidret->len)--;
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}
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@ -1067,6 +1096,7 @@ snmp_expand_tree(struct mib_node *node, u8_t ident_len, s32_t *ident, struct snm
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oidret->id[oidret->len] = child.r_id;
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oidret->len++;
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node = child.r_ptr;
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ext_level = child.r_nl;
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}
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else
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{
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