key_call.c File Reference

#include <pthread.h>
#include <reentrant.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <rpc/rpc.h>
#include <rpc/auth.h>
#include <rpc/auth_unix.h>
#include <rpc/key_prot.h>
#include <string.h>
#include <netconfig.h>
#include <sys/utsname.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/fcntl.h>

Include dependency graph for key_call.c:

Go to the source code of this file.

Classes
struct	key_call_private

Macros
#define	KEY_TIMEOUT   5 /* per-try timeout in seconds */
#define	KEY_NRETRY   12 /* number of retries */
#define	debug(msg)
#define	TOTAL_TIMEOUT   30 /* total timeout talking to keyserver */
#define	TOTAL_TRIES   5 /* Number of tries */

Functions
static int	key_call (u_long, xdrproc_t, void *, xdrproc_t, void *)
int	key_setsecret (char *secretkey) const
int	key_secretkey_is_set (void)
int	key_encryptsession_pk (char *remotename, netobj *remotekey, des_block *deskey)
int	key_decryptsession_pk (char *remotename, netobj *remotekey, des_block *deskey)
int	key_encryptsession (char *remotename, des_block *deskey) const
int	key_decryptsession (char *remotename, des_block *deskey) const
int	key_gendes (des_block *key)
int	key_setnet (struct key_netstarg *arg)
int	key_get_conv (char *pkey, des_block *deskey)
static void	key_call_destroy (void *vp)
static CLIENT *	getkeyserv_handle (int vers)

Variables
cryptkeyres *(*	__key_encryptsession_pk_LOCAL )()=0
cryptkeyres *(*	__key_decryptsession_pk_LOCAL )()=0
des_block *(*	__key_gendes_LOCAL )()=0
static struct key_call_private *	key_call_private_main = NULL

Macro Definition Documentation

debug

#define debug

(

msg

)

Definition at line 71 of file key_call.c.

KEY_NRETRY

#define KEY_NRETRY   12 /* number of retries */

Definition at line 66 of file key_call.c.

KEY_TIMEOUT

#define KEY_TIMEOUT   5 /* per-try timeout in seconds */

Definition at line 65 of file key_call.c.

TOTAL_TIMEOUT

#define TOTAL_TIMEOUT   30 /* total timeout talking to keyserver */

TOTAL_TRIES

#define TOTAL_TRIES   5 /* Number of tries */

Function Documentation

getkeyserv_handle()

static CLIENT * getkeyserv_handle ( int  vers )

static

Definition at line 297 of file key_call.c.

{
    void *localhandle;
    struct netconfig *nconf;
    struct netconfig *tpconf;
    struct key_call_private *kcp = key_call_private_main;
    struct timeval wait_time;
    struct utsname u;
    int fd;
    extern thread_key_t key_call_key;
    extern mutex_t tsd_lock;
 
#define TOTAL_TIMEOUT   30  /* total timeout talking to keyserver */
#define TOTAL_TRIES 5   /* Number of tries */
 
    if (key_call_key == -1) {
        mutex_lock(&tsd_lock);
        if (key_call_key == -1)
            thr_keycreate(&key_call_key, key_call_destroy);
        mutex_unlock(&tsd_lock);
    }
    kcp = (struct key_call_private *)thr_getspecific(key_call_key);
    if (kcp == (struct key_call_private *)NULL) {
        kcp = (struct key_call_private *)malloc(sizeof (*kcp));
        if (kcp == (struct key_call_private *)NULL) {
            return ((CLIENT *) NULL);
        }
                thr_setspecific(key_call_key, (void *) kcp);
        kcp->client = NULL;
    }
 
    /* if pid has changed, destroy client and rebuild */
    if (kcp->client != NULL && kcp->pid != getpid()) {
        clnt_destroy(kcp->client);
        kcp->client = NULL;
    }
 
    if (kcp->client != NULL) {
        /* if uid has changed, build client handle again */
        if (kcp->uid != geteuid()) {
            kcp->uid = geteuid();
            auth_destroy(kcp->client->cl_auth);
            kcp->client->cl_auth =
                authsys_create("", kcp->uid, 0, 0, NULL);
            if (kcp->client->cl_auth == NULL) {
                clnt_destroy(kcp->client);
                kcp->client = NULL;
                return ((CLIENT *) NULL);
            }
        }
        /* Change the version number to the new one */
        clnt_control(kcp->client, CLSET_VERS, (void *)&vers);
        return (kcp->client);
    }
    if (!(localhandle = setnetconfig())) {
        return ((CLIENT *) NULL);
    }
        tpconf = NULL;
#if defined(__FreeBSD__)
    if (uname(&u) == -1)
#else
#if defined(i386)
    if (uname(&u) == -1)
#elif defined(sparc)
    if (uname(&u) == -1)
#else
#error Unknown architecture!
#endif
#endif
    {
        endnetconfig(localhandle);
        return ((CLIENT *) NULL);
        }
    while ((nconf = getnetconfig(localhandle)) != NULL) {
        if (strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
            /*
             * We use COTS_ORD here so that the caller can
             * find out immediately if the server is dead.
             */
            if (nconf->nc_semantics == NC_TPI_COTS_ORD) {
                kcp->client = clnt_tp_create(u.nodename,
                    KEY_PROG, vers, nconf);
                if (kcp->client)
                    break;
            } else {
                tpconf = nconf;
            }
        }
    }
    if ((kcp->client == (CLIENT *) NULL) && (tpconf))
        /* Now, try the CLTS or COTS loopback transport */
        kcp->client = clnt_tp_create(u.nodename,
            KEY_PROG, vers, tpconf);
    endnetconfig(localhandle);
 
    if (kcp->client == (CLIENT *) NULL) {
        return ((CLIENT *) NULL);
        }
    kcp->uid = geteuid();
    kcp->pid = getpid();
    kcp->client->cl_auth = authsys_create("", kcp->uid, 0, 0, NULL);
    if (kcp->client->cl_auth == NULL) {
        clnt_destroy(kcp->client);
        kcp->client = NULL;
        return ((CLIENT *) NULL);
    }
 
    wait_time.tv_sec = TOTAL_TIMEOUT/TOTAL_TRIES;
    wait_time.tv_usec = 0;
    (void) clnt_control(kcp->client, CLSET_RETRY_TIMEOUT,
        (char *)&wait_time);
    if (clnt_control(kcp->client, CLGET_FD, (char *)&fd))
        fcntl(fd, F_SETFD, 1);  /* make it "close on exec" */
 
    return (kcp->client);
}

Referenced by key_call().

key_call()

static int key_call ( u_long  proc, xdrproc_t  xdr_arg, void *  arg, xdrproc_t  xdr_rslt, void *  rslt  )

static

Definition at line 418 of file key_call.c.

{
    CLIENT *clnt;
    struct timeval wait_time;
 
    if (proc == KEY_ENCRYPT_PK && __key_encryptsession_pk_LOCAL) {
        cryptkeyres *res;
        res = (*__key_encryptsession_pk_LOCAL)(geteuid(), arg);
        *(cryptkeyres*)rslt = *res;
        return (1);
    } else if (proc == KEY_DECRYPT_PK && __key_decryptsession_pk_LOCAL) {
        cryptkeyres *res;
        res = (*__key_decryptsession_pk_LOCAL)(geteuid(), arg);
        *(cryptkeyres*)rslt = *res;
        return (1);
    } else if (proc == KEY_GEN && __key_gendes_LOCAL) {
        des_block *res;
        res = (*__key_gendes_LOCAL)(geteuid(), 0);
        *(des_block*)rslt = *res;
        return (1);
    }
 
    if ((proc == KEY_ENCRYPT_PK) || (proc == KEY_DECRYPT_PK) ||
        (proc == KEY_NET_GET) || (proc == KEY_NET_PUT) ||
        (proc == KEY_GET_CONV))
        clnt = getkeyserv_handle(2); /* talk to version 2 */
    else
        clnt = getkeyserv_handle(1); /* talk to version 1 */
 
    if (clnt == NULL) {
        return (0);
    }
 
    wait_time.tv_sec = TOTAL_TIMEOUT;
    wait_time.tv_usec = 0;
 
    if (clnt_call(clnt, proc, xdr_arg, arg, xdr_rslt, rslt,
        wait_time) == RPC_SUCCESS) {
        return (1);
    } else {
        return (0);
    }
}

Referenced by key_decryptsession(), key_decryptsession_pk(), key_encryptsession(), key_encryptsession_pk(), key_gendes(), key_get_conv(), key_secretkey_is_set(), key_setnet(), and key_setsecret().

key_call_destroy()

static void key_call_destroy ( void *  vp )

static

Definition at line 282 of file key_call.c.

{
    struct key_call_private *kcp = (struct key_call_private *)vp;
 
    if (kcp) {
        if (kcp->client)
            clnt_destroy(kcp->client);
        free(kcp);
    }
}

Referenced by getkeyserv_handle().

key_decryptsession()

int key_decryptsession	(	char *	remotename,
		des_block *	deskey
	)		const

Definition at line 203 of file key_call.c.

{
    cryptkeyarg arg;
    cryptkeyres res;
 
    arg.remotename = (char *) remotename;
    arg.deskey = *deskey;
    if (!key_call((u_long)KEY_DECRYPT, (xdrproc_t)xdr_cryptkeyarg, &arg,
            (xdrproc_t)xdr_cryptkeyres, &res)) {
        return (-1);
    }
    if (res.status != KEY_SUCCESS) {
        debug("decrypt status is nonzero");
        return (-1);
    }
    *deskey = res.cryptkeyres_u.deskey;
    return (0);
}

key_decryptsession_pk()

int key_decryptsession_pk	(	char *	remotename,
		netobj *	remotekey,
		des_block *	deskey
	)

Definition at line 157 of file key_call.c.

{
    cryptkeyarg2 arg;
    cryptkeyres res;
 
    arg.remotename = remotename;
    arg.remotekey = *remotekey;
    arg.deskey = *deskey;
    if (!key_call((u_long)KEY_DECRYPT_PK, (xdrproc_t)xdr_cryptkeyarg2, &arg,
            (xdrproc_t)xdr_cryptkeyres, &res)) {
        return (-1);
    }
    if (res.status != KEY_SUCCESS) {
        debug("decrypt status is nonzero");
        return (-1);
    }
    *deskey = res.cryptkeyres_u.deskey;
    return (0);
}

key_encryptsession()

int key_encryptsession	(	char *	remotename,
		des_block *	deskey
	)		const

Definition at line 181 of file key_call.c.

{
    cryptkeyarg arg;
    cryptkeyres res;
 
    arg.remotename = (char *) remotename;
    arg.deskey = *deskey;
    if (!key_call((u_long)KEY_ENCRYPT, (xdrproc_t)xdr_cryptkeyarg, &arg,
            (xdrproc_t)xdr_cryptkeyres, &res)) {
        return (-1);
    }
    if (res.status != KEY_SUCCESS) {
        debug("encrypt status is nonzero");
        return (-1);
    }
    *deskey = res.cryptkeyres_u.deskey;
    return (0);
}

key_encryptsession_pk()

int key_encryptsession_pk	(	char *	remotename,
		netobj *	remotekey,
		des_block *	deskey
	)

Definition at line 133 of file key_call.c.

{
    cryptkeyarg2 arg;
    cryptkeyres res;
 
    arg.remotename = remotename;
    arg.remotekey = *remotekey;
    arg.deskey = *deskey;
    if (!key_call((u_long)KEY_ENCRYPT_PK, (xdrproc_t)xdr_cryptkeyarg2, &arg,
            (xdrproc_t)xdr_cryptkeyres, &res)) {
        return (-1);
    }
    if (res.status != KEY_SUCCESS) {
        debug("encrypt status is nonzero");
        return (-1);
    }
    *deskey = res.cryptkeyres_u.deskey;
    return (0);
}

key_gendes()

int key_gendes

(

des_block *

key

)

Definition at line 225 of file key_call.c.

{
    if (!key_call((u_long)KEY_GEN, (xdrproc_t)xdr_void, NULL,
            (xdrproc_t)xdr_des_block, key)) {
        return (-1);
    }
    return (0);
}

Referenced by authdes_pk_seccreate().

key_get_conv()

int key_get_conv	(	char *	pkey,
		des_block *	deskey
	)

Definition at line 256 of file key_call.c.

{
    cryptkeyres res;
 
    if (!key_call((u_long) KEY_GET_CONV, (xdrproc_t)xdr_keybuf, pkey,
            (xdrproc_t)xdr_cryptkeyres, &res)) {
        return (-1);
    }
    if (res.status != KEY_SUCCESS) {
        debug("get_conv status is nonzero");
        return (-1);
    }
    *deskey = res.cryptkeyres_u.deskey;
    return (0);
}

key_secretkey_is_set()

int key_secretkey_is_set

(

void

)

Definition at line 116 of file key_call.c.

{
    struct key_netstres     kres;
 
    memset((void*)&kres, 0, sizeof (kres));
    if (key_call((u_long) KEY_NET_GET, (xdrproc_t)xdr_void, NULL,
            (xdrproc_t)xdr_key_netstres, &kres) &&
        (kres.status == KEY_SUCCESS) &&
        (kres.key_netstres_u.knet.st_priv_key[0] != 0)) {
        /* avoid leaving secret key in memory */
        memset(kres.key_netstres_u.knet.st_priv_key, 0, HEXKEYBYTES);
        return (1);
    }
    return (0);
}

key_setnet()

int key_setnet

(

struct key_netstarg *

arg

)

Definition at line 236 of file key_call.c.

{
    keystatus status;
 
 
    if (!key_call((u_long) KEY_NET_PUT, (xdrproc_t)xdr_key_netstarg, arg,
            (xdrproc_t)xdr_keystatus, &status)){
        return (-1);
    }
 
    if (status != KEY_SUCCESS) {
        debug("key_setnet status is nonzero");
        return (-1);
    }
    return (1);
}

key_setsecret()

int key_setsecret

(

char *

secretkey

)

const

Definition at line 90 of file key_call.c.

{
    keystatus status;
 
    if (!key_call((u_long) KEY_SET, (xdrproc_t)xdr_keybuf,
            (void *)secretkey,
            (xdrproc_t)xdr_keystatus, &status)) {
        return (-1);
    }
    if (status != KEY_SUCCESS) {
        debug("set status is nonzero");
        return (-1);
    }
    return (0);
}

Variable Documentation

__key_decryptsession_pk_LOCAL

cryptkeyres *(* __key_decryptsession_pk_LOCAL) ()=0

(

)

Definition at line 84 of file key_call.c.

Referenced by key_call().

__key_encryptsession_pk_LOCAL

cryptkeyres *(* __key_encryptsession_pk_LOCAL) ()=0

(

)

Definition at line 83 of file key_call.c.

Referenced by key_call().

__key_gendes_LOCAL

des_block *(* __key_gendes_LOCAL) ()=0

(

)

Definition at line 85 of file key_call.c.

Referenced by key_call().

key_call_private_main

struct key_call_private* key_call_private_main = NULL

static

Definition at line 279 of file key_call.c.

Referenced by getkeyserv_handle().