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//==========================================================================

//

//      lib/getproto.c

//

//      getprotobyname(), getprotobynumber()

//

//==========================================================================

//####BSDCOPYRIGHTBEGIN####

//

// -------------------------------------------

//

// Portions of this software may have been derived from OpenBSD or other sources,

// and are covered by the appropriate copyright disclaimers included herein.

//

// -------------------------------------------

//

//####BSDCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas

// Date:         2000-01-10

// Purpose:      

// Description:  

//              

//

//####DESCRIPTIONEND####

//

//==========================================================================

#include <sys/param.h>

#include <netdb.h>

#include <errno.h>

static struct protoent protocols[] = {

    { "ip",         0}, // internet protocol, pseudo protocol number

    { "icmp",       1}, // internet control message protocol

    { "igmp",       2}, // Internet Group Management

    { "ggp",        3}, // gateway-gateway protocol

    { "ipencap",    4}, // IP encapsulated in IP (officially ``IP'')

    { "st",         5}, // ST datagram mode

    { "tcp",        6}, // transmission control protocol

    { "egp",        8}, // exterior gateway protocol

    { "pup",       12}, // PARC universal packet protocol

    { "udp",       17}, // user datagram protocol

    { "hmp",       20}, // host monitoring protocol

    { "xns-idp",   22}, // Xerox NS IDP

    { "rdp",       27}, // "reliable datagram" protocol

    { "iso-tp4",   29}, // ISO Transport Protocol class 4

    { "xtp",       36}, // Xpress Tranfer Protocol

    { "ddp",       37}, // Datagram Delivery Protocol

    { "idpr-cmtp", 39}, // IDPR Control Message Transport

    { "rspf",      73}, //Radio Shortest Path First.

    { "vmtp",      81}, // Versatile Message Transport

    { "ospf",      89}, // Open Shortest Path First IGP

    { "ipip",      94}, // Yet Another IP encapsulation

    { "encap",     98}, // Yet Another IP encapsulation

    { 0, 0}

};

struct protoent *

getprotobyname(const char *name)

{

    struct protoent *p = protocols;

    while (p->p_name) {

        if (strcmp(name, p->p_name) == 0) {

            return p;

        }

        p++;

    }

    errno = ENOENT;

    return (struct protoent *)0;

}

struct protoent *

getprotobynumber(const int num)

{

    struct protoent *p = protocols;

    while (p->p_name) {

        if (p->p_proto == num) {

            return p;

        }

        p++;

    }

    errno = ENOENT;

    return (struct protoent *)0;

}