+++ /dev/null
-#include <headers.h>
-#include <datatypes.h>
-#include <display.h>
-#include <options.h>
-#include <leases.h>
-#include <utils.h>
-
-int init_leases_list()
-{
- DHCPLIST *temp;
- int i, j;
- u8b chaddr[16];
- FILE *config;
- char line[80];
- char textsubnet[16];
- char textlease[5];
- char textrouter[16];
- char textmask[16];
- char textlowrange[4], texthighrange[4];
- char textserver[16];
- u8b ip0, ip1, ip2, ip3;
- u8b lowrange, highrange;
- u8b textmac[17], textip[16];
- u32b lease;
-
- /* Be nice variables and behave yourselves */
-
- for( j = 0; j < 16; j++ )
- {
- chaddr[j] = 0;
- textsubnet[j] = 0;
- textrouter[j] = 0;
- textmask[j] = 0;
- textip[j] = 0;
- textmac[j] = 0;
- }
-
- textlease[0] = 0;
- textlowrange[0] = 0;
- texthighrange[0] = 0;
-
- /* Now we can read our configuration file */
-
- config = fopen( "dhcp.conf", "r" );
- if( !config )
- {
- perror("Reading config files");
- exit( 0 );
- }
-
- /* We _DO_ need a better parser */
- list = (DHCPLIST *)malloc( sizeof( DHCPLIST ));
- temp = list;
- temp->back = NULL;
-
- while( (!feof( config )) && ( line ))
- {
- fscanf( config, "%s", line);
- if( !strcmp( line, "subnet" ))
- /* Read subnet parameters */
- fscanf( config, "%s", textsubnet );
-
- if( !strcmp( line, "lease" ))
- /* read lease parameters */
- fscanf( config, "%s", textlease );
-
- if( !strcmp( line, "router" ))
- fscanf( config, "%s", textrouter );
-
- if( !strcmp( line, "mask" ))
- fscanf( config, "%s", textmask );
-
- if( !strcmp( line, "range" ))
- fscanf( config, "%s %s", textlowrange, texthighrange );
- if( !strcmp( line, "server" ))
- fscanf( config, "%s", textserver );
- if( !strcmp( line, "host" ))
- {
- /* Host Specific Configuration */
- fscanf( config, "%s %s", textmac, textip );
- str2mac( textmac, temp->chaddr );
- temp->type = STATIC;
- temp->data.ip = inet_addr( textip );
- temp->next = (DHCPLIST *)malloc( sizeof( DHCPLIST ));
- temp->next->back = temp;
- temp = temp->next;
- temp->next =NULL;
- }
- }
- fclose( config );
-
- lowrange = (u8b)atoi( textlowrange );
- highrange = (u8b)atoi( texthighrange );
- lease = (u32b)atoi( textlease );
-
- /* Creating Static IP */
-
- for( temp = list; temp->next; temp = temp->next )
- {
- temp->available = FREE;
- temp->xid = 0;
- temp->data.router = inet_addr( textrouter );
- temp->data.mask = inet_addr( textmask );
- temp->data.lease = lease;
- temp->data.siaddr = inet_addr( textserver );
- }
-
- /* Creating Dynamic IP */
-
- for( i = lowrange; i < (highrange + 1); i++ )
- {
- temp->available = FREE;
- temp->xid = 0;
- temp->type = DYNAMIC;
- maccpy( temp->chaddr, chaddr );
- split_ip( textsubnet, &ip0, 0 );
- split_ip( textsubnet, &ip1, 1 );
- split_ip( textsubnet, &ip2, 2 );
- temp->data.ip = i;
- temp->data.ip = temp->data.ip << 8;
- temp->data.ip += ip2;
- temp->data.ip = temp->data.ip << 8;
- temp->data.ip += ip1;
- temp->data.ip = temp->data.ip << 8;
- temp->data.ip += ip0;
- temp->data.router = inet_addr( textrouter );
- temp->data.mask = inet_addr( textmask );
- temp->data.lease = lease;
- temp->data.siaddr = inet_addr( textserver );
- temp->next = (DHCPLIST *)malloc( sizeof( DHCPLIST ));
- temp->next->back = temp;
- temp = temp->next;
- }
- return 0;
-}
-
-int find_lease( DHCPLEASE *dhcpl, u32b xid, u8b chaddr[] )
-{
- int result = -2;
- DHCPLIST *temp;
-
- if( !dhcpl )
- return -1;
-
- for( temp = list; temp; temp=temp->next )
- if( !maccmp( temp->chaddr, chaddr ) )
- release_lease( dhcpl, xid, chaddr);
-
- for( temp = list; temp; temp=temp->next )
- if( ( !maccmp( temp->chaddr, chaddr )) && ( temp->type == STATIC ))
- {
- dhcpl->ip = temp->data.ip;
- dhcpl->router = temp->data.router;
- dhcpl->mask = temp->data.mask;
- dhcpl->lease = temp->data.lease;
- dhcpl->siaddr = temp->data.siaddr;
- fprintf( stdout, "Assigning Static IP! \n");
- temp->available = PROCESSING;
- temp->xid = xid;
- temp->ltime = MAX_PROCESS_TIME;
- maccpy( temp->chaddr, chaddr);
- result = 0;
- return result;
- }
- else if( ( temp->available & FREE ) && ( temp->type == DYNAMIC ))
- {
- dhcpl->ip = temp->data.ip;
- dhcpl->router = temp->data.router;
- dhcpl->mask = temp->data.mask;
- dhcpl->lease = temp->data.lease;
- dhcpl->siaddr = temp->data.siaddr;
- fprintf( stdout, "Assigning Dynamic IP! \n");
- temp->available = PROCESSING;
- temp->xid = xid;
- temp->ltime = MAX_PROCESS_TIME;
- maccpy( temp->chaddr, chaddr);
- result = 0;
- return result;
- }
- return result;
-}
-
-int confirm_lease( DHCPLEASE *dhcpl, u32b xid )
-{
- int result = -1;
- DHCPLIST *temp;
-
- for( temp = list; temp; temp=temp->next )
- if( temp->xid == xid )
- {
- dhcpl->ip = temp->data.ip;
- dhcpl->router = temp->data.router;
- dhcpl->mask = temp->data.mask;
- dhcpl->lease = temp->data.lease;
- dhcpl->siaddr = temp->data.siaddr;
- temp->available = BUSY;
- temp->ltime = temp->data.lease;
- result = 0;
- return result;
- }
- return result;
-}
-
-int release_lease( DHCPLEASE *dhcpl, u32b xid, u8b chaddr[16] )
-{
- int result = -1, i;
- DHCPLIST *temp;
- u8b nchaddr[16];
-
- for( i = 0; i < 16; i++ )
- nchaddr[i] = 0;
-
- if( !dhcpl )
- return -1;
-
- for( temp = list; temp; temp=temp->next )
- if( !maccmp( temp->chaddr, chaddr ) )
- {
- /* We found the address */
- result = 0;
- fprintf( stdout, "Deleting %X::%X::%X::%X::%X::%X \n", temp->chaddr[0], temp->chaddr[1], temp->chaddr[2], temp->chaddr[3], temp->chaddr[4], temp->chaddr[5] );
- temp->available = FREE;
- temp->xid = 0;
- /* maccpy( temp->chaddr, nchaddr ); */
- } else {
- /* No such address */
- result = -1;
- }
-
- return result;
-}
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