ifaddr.h File Reference

#include "libpq/pqcomm.h"

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Typedefs
typedef void(*	PgIfAddrCallback) (struct sockaddr *addr, struct sockaddr *netmask, void *cb_data)

Functions
int	pg_range_sockaddr (const struct sockaddr_storage *addr, const struct sockaddr_storage *netaddr, const struct sockaddr_storage *netmask)
int	pg_sockaddr_cidr_mask (struct sockaddr_storage *mask, char *numbits, int family)
int	pg_foreach_ifaddr (PgIfAddrCallback callback, void *cb_data)

Typedef Documentation

PgIfAddrCallback

typedef void(* PgIfAddrCallback) (struct sockaddr *addr, struct sockaddr *netmask, void *cb_data)

Definition at line 17 of file ifaddr.h.

Function Documentation

pg_foreach_ifaddr()

int pg_foreach_ifaddr ( PgIfAddrCallback  callback, void *  cb_data  )

extern

Definition at line 425 of file ifaddr.c.

{
    struct sockaddr_in addr;
    struct sockaddr_storage mask;
    struct sockaddr_in6 addr6;
 
    /* addr 127.0.0.1/8 */
    memset(&addr, 0, sizeof(addr));
    addr.sin_family = AF_INET;
    addr.sin_addr.s_addr = pg_ntoh32(0x7f000001);
    memset(&mask, 0, sizeof(mask));
    pg_sockaddr_cidr_mask(&mask, "8", AF_INET);
    run_ifaddr_callback(callback, cb_data,
                        (struct sockaddr *) &addr,
                        (struct sockaddr *) &mask);
 
    /* addr ::1/128 */
    memset(&addr6, 0, sizeof(addr6));
    addr6.sin6_family = AF_INET6;
    addr6.sin6_addr.s6_addr[15] = 1;
    memset(&mask, 0, sizeof(mask));
    pg_sockaddr_cidr_mask(&mask, "128", AF_INET6);
    run_ifaddr_callback(callback, cb_data,
                        (struct sockaddr *) &addr6,
                        (struct sockaddr *) &mask);
 
    return 0;
}

References callback(), fb(), pg_ntoh32, pg_sockaddr_cidr_mask(), and run_ifaddr_callback().

Referenced by check_same_host_or_net(), and main().

pg_range_sockaddr()

int pg_range_sockaddr ( const struct sockaddr_storage *  addr, const struct sockaddr_storage *  netaddr, const struct sockaddr_storage *  netmask  )

extern

Definition at line 49 of file ifaddr.c.

{
    if (addr->ss_family == AF_INET)
        return range_sockaddr_AF_INET((const struct sockaddr_in *) addr,
                                      (const struct sockaddr_in *) netaddr,
                                      (const struct sockaddr_in *) netmask);
    else if (addr->ss_family == AF_INET6)
        return range_sockaddr_AF_INET6((const struct sockaddr_in6 *) addr,
                                       (const struct sockaddr_in6 *) netaddr,
                                       (const struct sockaddr_in6 *) netmask);
    else
        return 0;
}

References fb(), range_sockaddr_AF_INET(), and range_sockaddr_AF_INET6().

Referenced by check_ip().

pg_sockaddr_cidr_mask()

int pg_sockaddr_cidr_mask ( struct sockaddr_storage *  mask, char *  numbits, int  family  )

extern

Definition at line 105 of file ifaddr.c.

{
    long        bits;
    char       *endptr;
 
    if (numbits == NULL)
    {
        bits = (family == AF_INET) ? 32 : 128;
    }
    else
    {
        bits = strtol(numbits, &endptr, 10);
        if (*numbits == '\0' || *endptr != '\0')
            return -1;
    }
 
    switch (family)
    {
        case AF_INET:
            {
                struct sockaddr_in mask4;
                long        maskl;
 
                if (bits < 0 || bits > 32)
                    return -1;
                memset(&mask4, 0, sizeof(mask4));
                /* avoid "x << 32", which is not portable */
                if (bits > 0)
                    maskl = (0xffffffffUL << (32 - (int) bits))
                        & 0xffffffffUL;
                else
                    maskl = 0;
                mask4.sin_addr.s_addr = pg_hton32(maskl);
                memcpy(mask, &mask4, sizeof(mask4));
                break;
            }
 
        case AF_INET6:
            {
                struct sockaddr_in6 mask6;
                int         i;
 
                if (bits < 0 || bits > 128)
                    return -1;
                memset(&mask6, 0, sizeof(mask6));
                for (i = 0; i < 16; i++)
                {
                    if (bits <= 0)
                        mask6.sin6_addr.s6_addr[i] = 0;
                    else if (bits >= 8)
                        mask6.sin6_addr.s6_addr[i] = 0xff;
                    else
                    {
                        mask6.sin6_addr.s6_addr[i] =
                            (0xff << (8 - (int) bits)) & 0xff;
                    }
                    bits -= 8;
                }
                memcpy(mask, &mask6, sizeof(mask6));
                break;
            }
 
        default:
            return -1;
    }
 
    mask->ss_family = family;
    return 0;
}

References fb(), i, and pg_hton32.

Referenced by check_network_callback(), parse_hba_line(), pg_foreach_ifaddr(), and run_ifaddr_callback().