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triez_netfpga.c
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triez_netfpga.c
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/*
* * FILE NAME: triez_netfpga.c
* * CONTAINS ALL FUNCTIONS UTILIZED BY DNS SERVER EXCEPT THOSE PERTAINING TO
* * MULTITHREADING
* * CREATED BY: RICK W. WALLEN
* * DATE CREATED: SEPTEMBER.29.2014
* * DATE LAST MOD: SEPTEMBER.29.2014
* * ___________
* * | |
* * [[|___________|]]
* * \___________/
* * __|[ ]||||[ ]|__
* * \_| # |||| # |_/
* * ___ ===Jeep=== ___
* * |\/\| '' '' |\/\|
* * |/\/| |/\/|
* * |_\_| |_\_|
* */
/**********************************************************************/
/*
* * MODIFIED LOG:
* * <date>-<description>
* * September.29.2014-Adapted from triez.c
* */
/**********************************************************************/
#include "triez_netfpga.h"
#include "dns_netfpga.h"
/* F(X) TO CHECK DOMAIN NAME DOESN'T CONTAIN INVALID CHARACTERS */
uint16_t checkDN(char *domName)
//int checkDN(char *domName)
{
int i;
int sz;
int de = 0;
sz = strlen(domName);
for(i = 0; i < sz; i++)
{
if(de > 63)
return (uint16_t) 1;
else if((i == 0) || (de == 0))
{
if((myisdigit(domName[i]) == 0) || (domName[i] == '-'))
return (uint16_t) 1;
else if((myisalpha(domName[i]) == 0) || (domName[i] == '-'))
de++;
else if(domName[i] == '.')
{
if((i == 0) && (sz > 1))
return (uint16_t) 1;
else
de = 0;
}
else
return (uint16_t) 1;
}
else if((myisalnum(domName[i]) == 0) || (domName[i] == '-'))
de++;
else if(domName[i] == '.')
de = 0;
else
return (uint16_t) 1;
}
return (uint16_t) 0;
}
/* F(X) TO CREATE A RESOUCE RECORD */
RR *createResRec(char *rec, uint32_t *ttlMin, uint16_t *rclass)
{
int i, seg, c;
uint32_t ttl;
uint16_t class;
uint16_t type;
RR *resrec;
resrec = (RR *) malloc(sizeof(RR));
resrec->ars = NULL;
resrec->nsrs = NULL;
resrec->cnamers = NULL;
resrec->ptrrs = NULL;
resrec->mxrs = NULL;
resrec->aaaars = NULL;
resrec->soars = NULL;
i = 0;
seg = 0;
class = 0;
type = 0;
if(strcmp(rec, "") == 0)
return NULL;
// Count number of delimiters
for(i = 0; i <= strlen(rec); i++)
{
if(rec[i] == ',')
seg++;
}
// Allocate 2d array
char **buff = (char**) malloc(seg * sizeof (char*));
// Variable for the current segment
char *buff2 = (char *) malloc(LNE_SZ *sizeof(char));
buff2 = strtok(rec, ",");
for(i = 0; buff2 != NULL; i++)
{
buff[i] = malloc(strlen(buff2)*sizeof(char));
//buff[i] = strdup(buff2);
memcpy(buff[i], buff2, strlen(buff2));
buff2 = strtok(NULL, ",");
}
class = *rclass;
if((seg-1 == 2 && strcmp(buff[0],"MX") != 0) || (seg-1 == 3 && strcmp(buff[0],"MX") == 0))
{
if(myisdigit(buff[0][0]))
{
ttl =(uint32_t) atoi(buff[0]);
c = 1;
}
else
c = 0;
}
else if((seg-1 == 3 && strcmp(buff[1],"MX") != 0) || (seg-1 == 4 && strcmp(buff[1],"MX") == 0))
{
if(myisdigit(buff[0][0]))
ttl =(uint32_t) atoi(buff[0]);
c = 1;
}
else
{
ttl = *ttlMin;
c = 0;
}
if(ttl < *ttlMin)
ttl = *ttlMin;
for(; c < seg; c++)
{
if(strcmp(buff[c], "IN") == 0)
class = (uint16_t) in;
else if(strcmp(buff[c], "CS") == 0)
class = (uint16_t) cs;
else if(strcmp(buff[c], "CH") == 0)
class = (uint16_t) ch;
else if(strcmp(buff[c], "HS") == 0)
class = (uint16_t) hs;
else if(strcmp(buff[c], "A") == 0)
type = (uint16_t) a;
else if(strcmp(buff[c], "NS") == 0)
type = (uint16_t) ns;
else if(strcmp(buff[c], "CNAME") == 0)
type = (uint16_t) cname;
else if(strcmp(buff[c], "SOA") == 0)
type = (uint16_t) soa;
else if(strcmp(buff[c], "PTR") == 0)
type = (uint16_t) ptr;
else if(strcmp(buff[c], "MX") == 0)
type = (uint16_t) mx;
else if(strcmp(buff[c], "AAAA") == 0)
type = (uint16_t) aaaa;
else
break;
}
switch((DnsType) type)
{
case a:
resrec->ars = (A *) malloc(sizeof(A));
if(inet_pton(AF_INET, buff[c], &resrec->ars->address) == 1);
//if(my_inet_pton(AF_INET, buff[c], &resrec->ars->address) == 1);
else
//log("\n\nERROR\t%s\n\n", buff[c]);
//resrec->ars->address = strdup(buff[c]);
resrec->ars->rclass = class;
resrec->ars->ttl = ttl;
resrec->ars->rdlen = sizeof(struct in_addr);
//resrec->ars->rdlen = strlen(resrec->ars->address) +
// 1;
resrec->ars->anxt = NULL;
break;
case ns:
resrec->nsrs = (NS *) malloc(sizeof(NS));
//resrec->nsrs->nsdname = strdup(buff[c]);
memcpy(resrec->nsrs->nsdname, buff[c], strlen(buff[c]));
resrec->nsrs->rclass = class;
resrec->nsrs->ttl = ttl;
resrec->nsrs->rdlen = strlen(resrec->nsrs->nsdname) + 1;
resrec->nsrs->nsnxt = NULL;
break;
case cname:
resrec->cnamers = (CNAME *) malloc(sizeof(CNAME));
//resrec->cnamers->cname = strdup(buff[c]);
memcpy(resrec->cnamers->cname, buff[c], strlen(buff[c]));
resrec->cnamers->rclass = class;
resrec->cnamers->ttl = ttl;
resrec->cnamers->rdlen = strlen(resrec->cnamers->cname) + 1;
break;
case soa:
resrec->soars = (SOA *) malloc(sizeof(SOA));
//resrec->soars->mname = strdup(buff[c]);
//resrec->soars->rname = strdup(buff[c+1]);
memcpy(resrec->soars->mname, buff[c], strlen(buff[c]));
memcpy(resrec->soars->rname, buff[c+1], strlen(buff[c+1]));
resrec->soars->serial = (uint32_t) atoi(buff[c+2]);
resrec->soars->refresh = (int32_t) atoi(buff[c+3]);
resrec->soars->retry = (int32_t) atoi(buff[c+4]);
resrec->soars->expire = (int32_t) atoi(buff[c+5]);
resrec->soars->minimum = (uint32_t) atoi(buff[c+6]);
resrec->soars->rclass = class;
resrec->soars->rdlen = strlen(resrec->soars->mname) + 1 +
strlen(resrec->soars->rname) + 1 +
sizeof(resrec->soars->serial) +
sizeof(resrec->soars->refresh) +
sizeof(resrec->soars->expire) +
sizeof(resrec->soars->minimum);
(*ttlMin) = (uint32_t) atoi(buff[c+6]);
(*rclass) = class;
break;
case ptr:
resrec->ptrrs = (PTR *) malloc(sizeof(PTR));
//resrec->ptrrs->ptrdname = strdup(buff[c]);
memcpy(resrec->ptrrs->ptrdname, buff[c], strlen(buff[c]));
resrec->ptrrs->rclass = class;
resrec->ptrrs->ttl = ttl;
resrec->ptrrs->rdlen = strlen(resrec->ptrrs->ptrdname) + 1;
break;
case mx:
resrec->mxrs = (MX *) malloc(sizeof(MX));
resrec->mxrs->preference = (uint16_t) atoi(buff[c]);
//resrec->mxrs->exchange = strdup(buff[c+1]);
memcpy(resrec->mxrs->exchange, buff[c+1], strlen(buff[c+1]));
resrec->mxrs->rclass = class;
resrec->mxrs->ttl = ttl;
resrec->mxrs->rdlen = sizeof(resrec->mxrs->preference) +
strlen(resrec->mxrs->exchange) + 1;
resrec->mxrs->mxnxt = NULL;
break;
case aaaa:
resrec->aaaars = (AAAA *) malloc(sizeof(AAAA));
if(inet_pton(AF_INET6, buff[c], &resrec->aaaars->address) == 1);
//if(my_inet_pton(AF_INET6, buff[c], &resrec->aaaars->address) == 1);
else
//log("\n\nERROR\n\n");
//resrec->aaaars->address = strdup(buff[c]);
resrec->aaaars->rclass = class;
resrec->aaaars->ttl = ttl;
resrec->aaaars->rdlen = sizeof(struct in6_addr);
//resrec->aaaars->rdlen = strlen(resrec->aaaars->address) +
// 1;
resrec->aaaars->aaaanxt = NULL;
break;
default:
return NULL;
break;
}
return resrec;
}
/* F(X) TO CREATE A NODE IN TRIE */
Trie *createNode(char k, RR *v)
{
Trie *node;
node = (Trie *) malloc(sizeof(Trie));
RR *resrec;
node->key = k;
node->par = NULL;
node->snt = NULL;
node->spv = NULL;
node->cdn = NULL;
if(v != NULL)
node->val = v;
else
{
resrec = (RR *) malloc(sizeof(RR));
resrec->ars = NULL;
resrec->nsrs = NULL;
resrec->cnamers = NULL;
resrec->ptrrs = NULL;
resrec->mxrs = NULL;
resrec->aaaars = NULL;
resrec->soars = NULL;
node->val = resrec;
}
return node;
}
/* F(X) TO ADD TO TRIE */
void addTrie(Trie *root, char *name, RR *resrec)
{
Trie *plc = NULL;
int i = 0;
int stl;
struct arec *aptr;
struct nsrec *nsptr;
struct mxrec *mxptr;
struct aaaarec *aaaaptr;
stl = strlen(name);
plc = root;
if(plc->cdn == NULL)
{
for(i = 0; i <= stl; i++)
{
if(name[i+1] == '\0')
{
plc->cdn = createNode(name[i],resrec);
plc->cdn->par = plc;
plc = plc->cdn;
}
else
{
plc->cdn = createNode(name[i], NULL);
plc->cdn->par = plc;
plc = plc->cdn;
}
}
}
else
{
plc = plc->cdn;
while(name[i] != '\0')
{
if(plc->key == name[i])
{
if((name[i+1] != '\0') && (plc->cdn != NULL))
{
plc = plc->cdn;
i++;
}
else if(name[i+1] == '\0')
{
//add the rr to plc
if(resrec->ars != NULL)
{
aptr = plc->val->ars;
if(aptr == NULL)
{
plc->val->ars = (A *) malloc(sizeof(A));
plc->val->ars = resrec->ars;
}
else
{
while(aptr->anxt != NULL)
aptr = aptr->anxt;
aptr->anxt = resrec->ars;
}
}
else if(resrec->nsrs != NULL)
{
nsptr = plc->val->nsrs;
if(nsptr == NULL)
{
plc->val->nsrs = (NS *) malloc(sizeof(NS));
plc->val->nsrs = resrec->nsrs;
}
else
{
while(nsptr->nsnxt != NULL)
nsptr = nsptr->nsnxt;
nsptr->nsnxt = resrec->nsrs;
}
}
else if(resrec->cnamers != NULL)
{
if(plc->val->cnamers == NULL)
{
plc->val->cnamers = (CNAME *) malloc(sizeof(CNAME) + resrec->cnamers->rdlen);
plc->val->cnamers = resrec->cnamers;
}
}
else if(resrec->ptrrs != NULL)
{
if(plc->val->ptrrs == NULL)
{
plc->val->ptrrs = (PTR *) malloc(sizeof(PTR) + resrec->ptrrs->rdlen);
plc->val->ptrrs = resrec->ptrrs;
}
}
else if(resrec->mxrs != NULL)
{
mxptr = plc->val->mxrs;
if(mxptr == NULL)
{
plc->val->mxrs = (MX *) malloc(sizeof(MX) + resrec->mxrs->rdlen);
plc->val->mxrs = resrec->mxrs;
}
else
{
while(mxptr->mxnxt != NULL)
mxptr->mxnxt = mxptr->mxnxt;
mxptr = resrec->mxrs;
}
}
else
{
aaaaptr = plc->val->aaaars;
if(aaaaptr == NULL)
{
plc->val->aaaars = (AAAA *) malloc(sizeof(AAAA));
plc->val->aaaars = resrec->aaaars;
}
else
{
while(aaaaptr->aaaanxt != NULL)
aaaaptr = aaaaptr->aaaanxt;
aaaaptr->aaaanxt = resrec->aaaars;
}
}
i++;
}
else
{
//log("Should never be here\n");
}
}
else if(plc->snt != NULL)
plc = plc->snt;
else
{
if(name[i+1] != '\0')
{
//add trie plc->snt then point pls->snt->spv then put rest
//of the string down
plc->snt = createNode(name[i], NULL);
plc->snt->spv = plc;
plc = plc->snt;
i++;
//add trie plc->cdn until string done
while(name[i+1] != '\0')
{
plc->cdn = createNode(name[i], NULL);
plc->cdn->par = plc;
plc = plc->cdn;
i++;
}
plc->cdn = createNode(name[i], resrec);
plc->cdn->par = plc;
plc = plc->cdn;
i++;
plc->cdn = createNode(name[i], NULL);
plc->cdn->par = plc;
plc = plc->cdn;
}
else
{
plc->snt = createNode(name[i], resrec);
plc->snt->spv = plc;
plc = plc->snt;
i++;
plc->cdn = createNode(name[i], NULL);
plc->cdn->par = plc;
plc = plc->cdn;
}
}
}
}
return;
}
/* F(X) TO SEARCH TRIE */
Trie *searchTrie(Trie *root, char *search, uint16_t qt, uint16_t qc)
{
Trie *plc;
Trie *ans = NULL;
int i = 0;
struct arec *aptr;
struct nsrec *nsptr;
struct mxrec *mxptr;
struct aaaarec *aaaaptr;
if(root->cdn == NULL)
return NULL;
plc = root->cdn;
while(search[i] != '\0')
{
if(mytoupper(search[i]) == mytoupper(plc->key))
{
i++;
if(plc->val != NULL)
{
switch((DnsType) qt)
{
case a:
if((plc->val->ars != NULL) && (search[i] == '\0'))
{
aptr = plc->val->ars;
while(aptr != NULL)
{
if(aptr->rclass == qc)
ans = plc;
aptr = aptr->anxt;
}
}
else if((plc->val->cnamers != NULL) && (search[i] == '\0'))
{
if(plc->val->cnamers->rclass == qc)
ans = plc;
}
else if(plc->val->nsrs != NULL)
{
nsptr = plc->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qc)
ans = plc;
nsptr = nsptr->nsnxt;
}
}
break;
case ns:
if(plc->val->nsrs != NULL)
{
nsptr = plc->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qc)
ans = plc;
nsptr = nsptr->nsnxt;
}
}
else if((plc->val->cnamers != NULL) && (search[i] == '\0'))
{
if(plc->val->cnamers->rclass == qc)
ans = plc;
}
break;
case cname:
if((plc->val->cnamers != NULL) && (search[i] == '\0'))
{
if(plc->val->cnamers->rclass == qc)
ans = plc;
}
else if(plc->val->nsrs != NULL)
{
nsptr = plc->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qc)
ans = plc;
nsptr = nsptr->nsnxt;
}
}
break;
case soa:
if((plc->val->soars != NULL) && (search[i] == '\0'))
{
if(plc->val->soars->rclass == qc)
ans = plc;
}
else if((plc->val->cnamers != NULL) && (search[i] == '\0'))
{
if(plc->val->cnamers->rclass == qc)
ans = plc;
}
else if(plc->val->nsrs != NULL)
{
nsptr = plc->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qc)
ans = plc;
nsptr = nsptr->nsnxt;
}
}
break;
case ptr:
if((plc->val->ptrrs != NULL) && (search[i] == '\0'))
{
if(plc->val->ptrrs->rclass == qc)
ans = plc;
}
else if((plc->val->cnamers != NULL) && (search[i] == '\0'))
{
if(plc->val->cnamers->rclass == qc)
ans = plc;
}
else if(plc->val->nsrs != NULL)
{
nsptr = plc->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qc)
ans = plc;
nsptr = nsptr->nsnxt;
}
}
break;
case mx:
if((plc->val->mxrs != NULL) && (search[i] == '\0'))
{
mxptr = plc->val->mxrs;
while(mxptr != NULL)
{
if(mxptr->rclass == qc)
ans = plc;
mxptr = mxptr->mxnxt;
}
}
else if((plc->val->cnamers != NULL) && (search[i] == '\0'))
{
if(plc->val->cnamers->rclass == qc)
ans = plc;
}
else if(plc->val->nsrs != NULL)
{
nsptr = plc->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qc)
ans = plc;
nsptr = nsptr->nsnxt;
}
}
break;
case aaaa:
if((plc->val->aaaars != NULL) && (search[i] == '\0'))
{
aaaaptr = plc->val->aaaars;
while(aaaaptr != NULL)
{
if(aaaaptr->rclass == qc)
ans = plc;
aaaaptr = aaaaptr->aaaanxt;
}
}
else if((plc->val->cnamers != NULL) && (search[i] == '\0'))
{
if(plc->val->cnamers->rclass == qc)
ans = plc;
}
else if(plc->val->nsrs != NULL)
{
nsptr = plc->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qc)
ans = plc;
nsptr = nsptr->nsnxt;
}
}
break;
default:
if(plc->val->nsrs != NULL)
{
if(plc->val->nsrs->rclass == qc)
ans = plc;
}
break;
}
}
if(plc->cdn != NULL)
plc = plc->cdn;
}
else if(plc->snt != NULL)
plc = plc->snt;
else
break;
}
return ans;
}
/* F(X) TO PULL NAME FROM TRIE */
void findN(char *dest, Trie *start)
{
Trie *plc;
char buff[DNM_SZ];
char buff2[DNM_SZ];
int i = 0;
int c;
int seg = 0;
int sz = 0;
plc = start;
while(plc->key != '*')
{
if(plc->key != '\0')
{
buff[i] = plc->key;
i++;
}
if(plc->par != NULL)
plc = plc->par;
else
{
while(plc->spv != NULL)
plc = plc->spv;
plc = plc->par;
}
}
buff[i] = '\0';
if(strlen(buff) > 1)
{
c = strlen(buff)-1;
for(i = 0; i <= strlen(buff); i++)
{
buff2[i] = buff[c];
c--;
}
buff2[strlen(buff)+1] = '\0';
for(i = 0; i <= strlen(buff2); i++)
{
if(buff2[i] == '.')
seg++;
}
char **label = (char**) malloc(seg * sizeof (char*));
char *curLabel = strtok(buff2, ".");
for(i = 0; curLabel != NULL; i++)
{
label[i] = malloc(strlen(curLabel)*sizeof(char));
//label[i] = strdup(curLabel);
memcpy(label[i], curLabel, strlen(curLabel));
curLabel = strtok(NULL, ".");
}
strcpy(buff,"");
sz = i-1;
for(i = sz; i >= 0; i--)
{
if(i != sz)
strcat(buff, ".");
strcat(buff, label[i]);
}
strcat(buff, ".");
// Deallocate 2d array
for(i = 0; i < seg; i++)
free(label[i]);
free(label);
}
strcpy(dest, buff);
return;
}
/* F(X) TO DEL TO TRIE */
void delTrie(Trie *root)
{
return;
}
/* F(X) TO PULL DATA FROM NODE AND RETRIEVE KEY */
void putResRecStr(DnsHdrFlags *fl, DnsHeader *head, Trie *root, Trie *result, DnsQuery *qry, char *msg, int *offs, char *search)
{
struct arec *aptr;
struct nsrec *nsptr;
struct mxrec *mxptr;
struct aaaarec *aaaaptr;
uint16_t rtype = 0;
uint16_t rclass = 0;
uint16_t rdlen = 0;
uint16_t pref = 0;
int32_t ttl = 0;
int32_t refresh = 0; // SOA
int32_t retry = 0; // SOA
int32_t expire = 0; // SOA
uint32_t serial = 0; // SOA
uint32_t minimum = 0; // SOA
int sz = 0;
char ans[DNM_SZ]; // Result of search
char nme[DNM_SZ]; // Name
char snme[DNM_SZ]; // Name
char nsn[DNM_SZ]; // Name
int offset;
offset = 0;
findN(nme, result);
strcpy(snme, nme);
uDN(snme);
if((result->val->cnamers != NULL) && (qry->qtype != (uint16_t) cname) && (strcmp(search, snme) == 0))
{
//Restart search with cname and put cname in ans. sect.
//Put result in msg and increment offset
if(result->val->cnamers->rclass == qry->qclass)
{
rtype = (uint16_t)cname;
rclass = result->val->cnamers->rclass;
ttl = result->val->cnamers->ttl;
rdlen = result->val->cnamers->rdlen;
rtype = htons(rtype);
rclass = htons(rclass);
ttl = htonl(ttl);
rdlen = htons(rdlen);
strcpy(ans, result->val->cnamers->cname);
sz = conDnsNameToSend(nme, msg + offset);
offset = offset + sz;
sz = 0;
memcpy((void *) msg + offset, (void *) &rtype, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &rclass, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &ttl, sizeof(int32_t));
offset = offset + sizeof(int32_t);
memcpy((void *) msg + offset, (void *) &rdlen, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
sz = conDnsNameToSend(ans, msg + offset);
offset = offset + sz;
sz = 0;
head->ancount = head->ancount + 1;
revDN(ans);
//uDN(ans);
result = searchTrie(root, ans, qry->qtype, qry->qclass);
if(result != NULL)
{
findN(nme, result);
strcpy(snme,nme);
uDN(snme);
revDN(ans);
uDN(ans);
}
}
else
result = NULL;
if(result == NULL);
else if((result->val->nsrs != NULL) && (strcmp(ans, snme) != 0))
{
//Put result in auth. sect restart search with all ns
//put those results in addit. res. sect.
nsptr = result->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qry->qclass)
{
head->nscount = head->nscount + 1;
rtype = (uint16_t) ns;
rclass = nsptr->rclass;
ttl = nsptr->ttl;
rdlen = nsptr->rdlen;
rtype = htons(rtype);
rclass = htons(rclass);
ttl = htonl(ttl);
rdlen = htons(rdlen);
strcpy(ans, nsptr->nsdname);
sz = conDnsNameToSend(nme, msg + offset);
offset = offset + sz;
sz = 0;
memcpy((void *) msg + offset, (void *) &rtype, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &rclass, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &ttl, sizeof(int32_t));
offset = offset + sizeof(int32_t);
memcpy((void *) msg + offset, (void *) &rdlen, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
sz = conDnsNameToSend(ans, msg + offset);
offset = offset + sz;
sz = 0;
}
nsptr = nsptr->nsnxt;
}
nsptr = result->val->nsrs;
while(nsptr != NULL)
{
if(nsptr->rclass == qry->qclass)
{
strcpy(nsn, nsptr->nsdname);
revDN(nsn);
strcpy(nme, nsptr->nsdname);
result = searchTrie(root, nsn, (uint16_t) a, qry->qclass);
if(result == NULL)
aptr = NULL;
else
aptr = result->val->ars;
while(aptr != NULL)
{
if(aptr->rclass == qry->qclass)
{
head->arcount = head->arcount + 1;
rtype = (uint16_t) a;
rclass = aptr->rclass;
ttl = aptr->ttl;
rdlen = aptr->rdlen;
rtype = htons(rtype);
rclass = htons(rclass);
ttl = htonl(ttl);
rdlen = htons(rdlen);
sz = conDnsNameToSend(nme, msg + offset);
offset = offset + sz;
sz = 0;
memcpy((void *) msg + offset, (void *) &rtype, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &rclass, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &ttl, sizeof(int32_t));
offset = offset + sizeof(int32_t);
memcpy((void *) msg + offset, (void *) &rdlen, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &aptr->address, sizeof(struct in_addr));
offset = offset + sizeof(struct in_addr);
}
aptr = aptr->anxt;
}
result = searchTrie(root, nsn, (uint16_t) aaaa, qry->qclass);
if(result == NULL)
aaaaptr = NULL;
else
aaaaptr = result->val->aaaars;
while(aaaaptr != NULL)
{
if(aaaaptr->rclass == qry->qclass)
{
head->arcount = head->arcount + 1;
rtype = (uint16_t) aaaa;
rclass = aaaaptr->rclass;
ttl = aaaaptr->ttl;
rdlen = aaaaptr->rdlen;
rtype = htons(rtype);
rclass = htons(rclass);
ttl = htonl(ttl);
rdlen = htons(rdlen);
sz = conDnsNameToSend(nme, msg + offset);
offset = offset + sz;
sz = 0;
memcpy((void *) msg + offset, (void *) &rtype, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &rclass, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &ttl, sizeof(int32_t));
offset = offset + sizeof(int32_t);
memcpy((void *) msg + offset, (void *) &rdlen, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &aaaaptr->address, sizeof(struct in6_addr));
offset = offset + sizeof(struct in6_addr);
}
aaaaptr = aaaaptr->aaaanxt;
}
}
nsptr = nsptr->nsnxt;
}
}//end ns and additional records
else
{
//Check to see if there is a RR coresponding to type
switch((DnsType) qry->qtype)
{
case a:
aptr = result->val->ars;
while(aptr != NULL)
{
if(aptr->rclass == qry->qclass)
{
head->ancount = head->ancount + 1;
rtype = (uint16_t) a;
rclass = aptr->rclass;
ttl = aptr->ttl;
rdlen = aptr->rdlen;
rtype = htons(rtype);
rclass = htons(rclass);
ttl = htonl(ttl);
rdlen = htons(rdlen);
sz = conDnsNameToSend(nme, msg + offset);
offset = offset + sz;
sz = 0;
memcpy((void *) msg + offset, (void *) &rtype, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &rclass, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &ttl, sizeof(int32_t));
offset = offset + sizeof(int32_t);
memcpy((void *) msg + offset, (void *) &rdlen, sizeof(uint16_t));
offset = offset + sizeof(uint16_t);
memcpy((void *) msg + offset, (void *) &aptr->address, sizeof(struct in_addr));
offset = offset + sizeof(struct in_addr);