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Annotation of 43BSDReno/sys/nfs/TEST/billboard/src/bb_ip.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  ******************************************************************************
                      3:  *
                      4:  * Module: bb_ip.c
                      5:  *
                      6:  * Functions: 
                      7:  *         bb_get_ip_lines()   - Interpret a string to contain IP addresses.
                      8:  *                             - Place the addresses in the IP array and
                      9:  *                             - return the number found and index of first.
                     10:  *         bb_check_ip()       - Check if the IP address of the caller is
                     11:  *                             - in the IP list of his specified id name.
                     12:  *
                     13:  *
                     14:  ******************************************************************************
                     15:  */
                     16: 
                     17: /*
                     18:  ******************************************************************************
                     19:  * Include Files
                     20:  ******************************************************************************
                     21:  */
                     22: #include <stdio.h>
                     23: #include <rpc/rpc.h>
                     24: #include "common.h"
                     25: #include "protocol.h"
                     26: #include "server.h"
                     27: 
                     28: char   *strtok();
                     29: void   bb_get_ip();
                     30: 
                     31: 
                     32: 
                     33: /*************************************************************************
                     34: **                                                                     **
                     35: **  get_ip_lines() - Interpret the input 'line' to be a list of internet**
                     36: **  addresses.  Place them in the internet table and return the starting**
                     37: **  index of this block as well as the number of addresses in the block.**
                     38: **                                                                     **
                     39: *************************************************************************/
                     40: BB_ip          bb_ips[BB_MAX_IP];      /* IP Address array.            */
                     41: int            bb_ip_count;            /* The number of IP's in array. */
                     42: 
                     43: void
                     44: bb_get_ip_lines( line, p_count, p_index)
                     45:   char *line;          /* The input line of IP address tokens.         */
                     46:   int  *p_count;       /* Output number of IP addresses in the block.  */
                     47:   int  *p_index;       /* The starting index of the block of IP addrs. */
                     48: {
                     49:     char       *ip_addr;       /* Points to ip address string.         */
                     50: 
                     51:     /*
                     52:     **  The index of this block of ip addresses is equal to the count.
                     53:     */
                     54:     *p_index = bb_ip_count;
                     55:     *p_count = 0;
                     56: 
                     57: 
                     58:     if ( (ip_addr = strtok( line, BB_IP_SEPARATOR)) == NULL )
                     59:     {
                     60:        fprintf( stderr, "ERROR: Null IP address list in data file.\n");
                     61:     }
                     62: 
                     63:     do
                     64:     {
                     65:        strncpy( bb_ips[bb_ip_count++], ip_addr, BB_IP_ADDR_LEN);
                     66:        (*p_count)++;
                     67:     }
                     68:     while ( (ip_addr = strtok( NULL, BB_IP_SEPARATOR)) != NULL );
                     69: 
                     70:     /*
                     71:     **  Strtok() leaves the \n on the last IP addres, take it off.
                     72:     */
                     73:     bb_ips[bb_ip_count -1][strlen(bb_ips[bb_ip_count-1])-1] = NUL;
                     74: }
                     75: 
                     76: 
                     77: /*************************************************************************
                     78: **                                                                     **
                     79: **  bb_check_ip() - This function checks to see if the client has an   **
                     80: **  entry in the ip list which matches the ip address of this call.    **
                     81: **                                                                     **
                     82: *************************************************************************/
                     83: int
                     84: bb_check_ip( client)
                     85:   BB_id                client;         /* The clients identifier.              */
                     86: {
                     87:     int                client_id;      /* The index of the client.             */
                     88:     BB_co_data codata;         /* The company data of the client.      */
                     89:     int                i;              /* Nice loop variable name.             */
                     90:     BB_ip      ip;             /* The ip address of the caller.        */
                     91: 
                     92:     /*
                     93:     **  Get the client's id.
                     94:     */
                     95:     if ( (client_id = bb_get_hash( client)) == BB_HASH_ID_NOT_FOUND )
                     96:     {
                     97:        return BB_BAD_CLIENT;
                     98:     }
                     99: 
                    100:     /*
                    101:     **  Get the company data of the client.
                    102:     */
                    103:     if ( bb_get_codata( client_id, &codata) != BB_SUCCESS )
                    104:     {
                    105:        return BB_BAD_CLIENT;
                    106:     }
                    107: 
                    108:     /*
                    109:     **  Get the ip address of the caller and check it agains the
                    110:     **  clients list of ip addresses.
                    111:     */
                    112:     bb_get_ip( ip);
                    113:     for( i = codata.ip_idx; i < codata.ip_idx + codata.ip_cnt; i++ )
                    114:     {
                    115:        if ( strncmp( bb_ips[i], ip, BB_IP_ADDR_LEN) == 0 )
                    116:        {
                    117:            return BB_SUCCESS;
                    118:        }
                    119:     }
                    120: 
                    121:     return BB_FAILURE;
                    122: }

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