use the Curl_ name space

/* modified by Martin Hedenfalk <mhe@stacken.kth.se> for use in Curl

 * last modified 2000-09-18

 */

/*

/* This source code was modified by Martin Hedenfalk <mhe@stacken.kth.se> for

 * use in Curl. His latest changes were done 2000-09-18.

 *

 * It has since been patched away like a madman by Daniel Stenberg

 * <daniel@haxx.se> to make it better applied to curl conditions, and to make

 * it not use globals, pollute name space and more. This source code awaits a

 * rewrite to work around the paragraph 2 in the BSD licenses as explained

 * below.

 *

 * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Hgskolan

 * (Royal Institute of Technology, Stockholm, Sweden).

 * All rights reserved.

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

 * SUCH DAMAGE.  */

#include "setup.h"

#include "memdebug.h"

#endif

#ifdef FTP_SERVER

#define LOCAL_ADDR ctrl_addr

#define REMOTE_ADDR his_addr

#else

/*#define LOCAL_ADDR myctladdr***/

/*#define REMOTE_ADDR hisctladdr***/

#endif

/*extern struct sockaddr *LOCAL_ADDR, *REMOTE_ADDR;***/

#define LOCAL_ADDR (&local_addr)

#define LOCAL_ADDR (&conn->local_addr)

#define REMOTE_ADDR (&conn->serv_addr)

#define myctladdr LOCAL_ADDR

#define hisctladdr REMOTE_ADDR

static struct sockaddr_in local_addr;

struct krb4_data {

    des_cblock key;

    des_key_schedule schedule;

	return -1;

}

#ifdef FTP_SERVER

static int

krb4_adat(void *app_data, void *buf, size_t len)

{

    KTEXT_ST tkt;

    AUTH_DAT auth_dat;

    char *p;

    int kerror;

    u_int32_t cs;

    char msg[35]; /* size of encrypted block */

    int tmp_len;

    struct krb4_data *d = app_data;

    char inst[INST_SZ];

    struct sockaddr_in *his_addr_sin = (struct sockaddr_in *)his_addr;

    memcpy(tkt.dat, buf, len);

    tkt.length = len;

    k_getsockinst(0, inst, sizeof(inst));

    kerror = krb_rd_req(&tkt, "ftp", inst, 

			his_addr_sin->sin_addr.s_addr, &auth_dat, "");

    if(kerror == RD_AP_UNDEC){

	k_getsockinst(0, inst, sizeof(inst));

	kerror = krb_rd_req(&tkt, "rcmd", inst, 

			    his_addr_sin->sin_addr.s_addr, &auth_dat, "");

    }

    if(kerror){

	reply(535, "Error reading request: %s.", krb_get_err_text(kerror));

	return -1;

    }

    memcpy(d->key, auth_dat.session, sizeof(d->key));

    des_set_key(&d->key, d->schedule);

    strlcpy(d->name, auth_dat.pname, sizeof(d->name));

    strlcpy(d->instance, auth_dat.pinst, sizeof(d->instance));

    strlcpy(d->realm, auth_dat.prealm, sizeof(d->instance));

    cs = auth_dat.checksum + 1;

    {

	unsigned char tmp[4];

	KRB_PUT_INT(cs, tmp, 4, sizeof(tmp));

	tmp_len = krb_mk_safe(tmp, msg, 4, &d->key,

			      (struct sockaddr_in *)LOCAL_ADDR,

			      (struct sockaddr_in *)REMOTE_ADDR);

    }

    if(tmp_len < 0){

	reply(535, "Error creating reply: %s.", strerror(errno));

	return -1;

    }

    len = tmp_len;

    if(base64_encode(msg, len, &p) < 0) {

	reply(535, "Out of memory base64-encoding.");

	return -1;

    }

    reply(235, "ADAT=%s", p);

    sec_complete = 1;

    free(p);

    return 0;

}

static int

krb4_userok(void *app_data, char *user)

{

    struct krb4_data *d = app_data;

    return krb_kuserok(d->name, d->instance, d->realm, user);

}

struct sec_server_mech krb4_server_mech = {

    "KERBEROS_V4",

    sizeof(struct krb4_data),

    NULL, /* init */

    NULL, /* end */

    krb4_check_prot,

    krb4_overhead,

    krb4_encode,

    krb4_decode,

    /* */

    NULL,

    krb4_adat,

    NULL, /* pbsz */

    NULL, /* ccc */

    krb4_userok

};

#else /* FTP_SERVER */

static int

mk_auth(struct krb4_data *d, KTEXT adat, 

	const char *service, char *host, int checksum)

  u_int32_t cs;

  struct krb4_data *d = app_data;

  struct sockaddr_in *localaddr  = (struct sockaddr_in *)LOCAL_ADDR;

#if 0

  struct sockaddr_in *remoteaddr = (struct sockaddr_in *)REMOTE_ADDR;

#endif

  char *host = conn->hp->h_name;

  ssize_t nread;

  int l = sizeof(local_addr);

  int l = sizeof(conn->local_addr);

  if(getsockname(conn->firstsocket,

                 (struct sockaddr *)LOCAL_ADDR, &l) < 0)

  return AUTH_OK;

}

struct sec_client_mech krb4_client_mech = {

struct Curl_sec_client_mech Curl_krb4_client_mech = {

    "KERBEROS_V4",

    sizeof(struct krb4_data),

    NULL, /* init */

    krb4_decode

};

#endif /* FTP_SERVER */

void krb_kauth(struct connectdata *conn)

void Curl_krb_kauth(struct connectdata *conn)

{

  des_cblock key;

  des_key_schedule schedule;