diff options
Diffstat (limited to 'cpukit/librpc/src/rpc/svc.c')
| -rw-r--r-- | cpukit/librpc/src/rpc/svc.c | 502 |
1 files changed, 0 insertions, 502 deletions
diff --git a/cpukit/librpc/src/rpc/svc.c b/cpukit/librpc/src/rpc/svc.c deleted file mode 100644 index a1f576976c..0000000000 --- a/cpukit/librpc/src/rpc/svc.c +++ /dev/null @@ -1,502 +0,0 @@ -#include "rtems-rpc-config.h" - -/* - * Sun RPC is a product of Sun Microsystems, Inc. and is provided for - * unrestricted use provided that this legend is included on all tape - * media and as a part of the software program in whole or part. Users - * may copy or modify Sun RPC without charge, but are not authorized - * to license or distribute it to anyone else except as part of a product or - * program developed by the user. - * - * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE - * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR - * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. - * - * Sun RPC is provided with no support and without any obligation on the - * part of Sun Microsystems, Inc. to assist in its use, correction, - * modification or enhancement. - * - * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE - * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC - * OR ANY PART THEREOF. - * - * In no event will Sun Microsystems, Inc. be liable for any lost revenue - * or profits or other special, indirect and consequential damages, even if - * Sun has been advised of the possibility of such damages. - * - * Sun Microsystems, Inc. - * 2550 Garcia Avenue - * Mountain View, California 94043 - */ - -#if defined(LIBC_SCCS) && !defined(lint) -/*static char *sccsid = "from: @(#)svc.c 1.44 88/02/08 Copyr 1984 Sun Micro";*/ -/*static char *sccsid = "from: @(#)svc.c 2.4 88/08/11 4.0 RPCSRC";*/ -static char *rcsid = "$FreeBSD: src/lib/libc/rpc/svc.c,v 1.14 1999/08/28 00:00:48 peter Exp $"; -#endif - -/* - * svc.c, Server-side remote procedure call interface. - * - * There are two sets of procedures here. The xprt routines are - * for handling transport handles. The svc routines handle the - * list of service routines. - * - * Copyright (C) 1984, Sun Microsystems, Inc. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <string.h> -#ifdef HAVE_STRINGS_H -#include <strings.h> /* for ffs */ -#endif -#include <stdlib.h> -#include <sys/errno.h> -#include <sys/param.h> -#include <rpc/rpc.h> -#include <rpc/pmap_clnt.h> - -#define xports (rtems_rpc_task_variables->svc_xports) -#define xportssize (rtems_rpc_task_variables->svc_xportssize) - -#define NULL_SVC ((struct svc_callout *)0) -#define RQCRED_SIZE 400 /* this size is excessive */ - -#define max(a, b) (a > b ? a : b) - -/* - * The services list - * Each entry represents a set of procedures (an rpc program). - * The dispatch routine takes request structs and runs the - * apropriate procedure. - */ -struct svc_callout { - struct svc_callout *sc_next; - u_long sc_prog; - u_long sc_vers; - void (*sc_dispatch)(struct svc_req *r, SVCXPRT *xprt); -}; -#define svc_head (rtems_rpc_task_variables->svc_svc_head) - -static struct svc_callout *svc_find(u_long prog, u_long vers, - struct svc_callout **prev); - -/* *************** SVCXPRT related stuff **************** */ - -/* - * Activate a transport handle. - */ -void -xprt_register( - SVCXPRT *xprt ) -{ - register int sock = xprt->xp_sock; - - if (sock + 1 > __svc_fdsetsize) { - int bytes = sizeof (fd_set); - fd_set *fds; - - fds = (fd_set *)malloc(bytes); - memset(fds, 0, bytes); - if (__svc_fdset) { - memcpy(fds, __svc_fdset, bytes); - free(__svc_fdset); - } - __svc_fdset = fds; - __svc_fdsetsize = bytes * NBBY; - } - - if (sock < FD_SETSIZE) - FD_SET(sock, &svc_fdset); - FD_SET(sock, __svc_fdset); - - if (xports == NULL || sock + 1 > xportssize) { - SVCXPRT **xp; - int size = FD_SETSIZE; - - if (sock + 1 > size) - size = sock + 1; - xp = (SVCXPRT **)mem_alloc(size * sizeof(SVCXPRT *)); - memset(xp, 0, size * sizeof(SVCXPRT *)); - if (xports) { - memcpy(xp, xports, xportssize * sizeof(SVCXPRT *)); - free(xports); - } - xportssize = size; - xports = xp; - } - xports[sock] = xprt; - svc_maxfd = max(svc_maxfd, sock); -} - -/* - * De-activate a transport handle. - */ -void -xprt_unregister( - SVCXPRT *xprt ) -{ - register int sock = xprt->xp_sock; - - if (xports[sock] == xprt) { - xports[sock] = (SVCXPRT *)0; - if (sock < FD_SETSIZE) - FD_CLR(sock, &svc_fdset); - FD_CLR(sock, __svc_fdset); - if (sock == svc_maxfd) { - for (svc_maxfd--; svc_maxfd >= 0; svc_maxfd--) - if (xports[svc_maxfd]) - break; - } - /* - * XXX could use svc_maxfd as a hint to - * decrease the size of __svc_fdset - */ - } -} - - -/* ********************** CALLOUT list related stuff ************* */ - -/* - * Add a service program to the callout list. - * The dispatch routine will be called when a rpc request for this - * program number comes in. - */ -bool_t -svc_register( - SVCXPRT *xprt, - u_long prog, - u_long vers, - void (*dispatch)(struct svc_req *r, SVCXPRT *xprt), - int protocol ) -{ - struct svc_callout *prev; - register struct svc_callout *s; - - if ((s = svc_find(prog, vers, &prev)) != NULL_SVC) { - if (s->sc_dispatch == dispatch) - goto pmap_it; /* he is registering another xptr */ - return (FALSE); - } - s = (struct svc_callout *)mem_alloc(sizeof(struct svc_callout)); - if (s == (struct svc_callout *)0) { - return (FALSE); - } - s->sc_prog = prog; - s->sc_vers = vers; - s->sc_dispatch = dispatch; - s->sc_next = svc_head; - svc_head = s; -pmap_it: - /* now register the information with the local binder service */ - if (protocol) { - return (pmap_set(prog, vers, protocol, xprt->xp_port)); - } - return (TRUE); -} - -/* - * Remove a service program from the callout list. - */ -void -svc_unregister( - u_long prog, - u_long vers ) -{ - struct svc_callout *prev; - register struct svc_callout *s; - - if ((s = svc_find(prog, vers, &prev)) == NULL_SVC) - return; - if (prev == NULL_SVC) { - svc_head = s->sc_next; - } else { - prev->sc_next = s->sc_next; - } - s->sc_next = NULL_SVC; - mem_free((char *) s, (u_int) sizeof(struct svc_callout)); - /* now unregister the information with the local binder service */ - (void)pmap_unset(prog, vers); -} - -/* - * Search the callout list for a program number, return the callout - * struct. - */ -static struct svc_callout * -svc_find( - u_long prog, - u_long vers, - struct svc_callout **prev ) -{ - register struct svc_callout *s, *p; - - p = NULL_SVC; - for (s = svc_head; s != NULL_SVC; s = s->sc_next) { - if ((s->sc_prog == prog) && (s->sc_vers == vers)) - goto done; - p = s; - } -done: - *prev = p; - return (s); -} - -/* ******************* REPLY GENERATION ROUTINES ************ */ - -/* - * Send a reply to an rpc request - */ -bool_t -svc_sendreply( - register SVCXPRT *xprt, - xdrproc_t xdr_results, - void *xdr_location ) -{ - struct rpc_msg rply; - - rply.rm_direction = REPLY; - rply.rm_reply.rp_stat = MSG_ACCEPTED; - rply.acpted_rply.ar_verf = xprt->xp_verf; - rply.acpted_rply.ar_stat = SUCCESS; - rply.acpted_rply.ar_results.where = xdr_location; - rply.acpted_rply.ar_results.proc = xdr_results; - return (SVC_REPLY(xprt, &rply)); -} - -/* - * No procedure error reply - */ -void -svcerr_noproc( - register SVCXPRT *xprt ) -{ - struct rpc_msg rply; - - rply.rm_direction = REPLY; - rply.rm_reply.rp_stat = MSG_ACCEPTED; - rply.acpted_rply.ar_verf = xprt->xp_verf; - rply.acpted_rply.ar_stat = PROC_UNAVAIL; - SVC_REPLY(xprt, &rply); -} - -/* - * Can't decode args error reply - */ -void -svcerr_decode( - register SVCXPRT *xprt ) -{ - struct rpc_msg rply; - - rply.rm_direction = REPLY; - rply.rm_reply.rp_stat = MSG_ACCEPTED; - rply.acpted_rply.ar_verf = xprt->xp_verf; - rply.acpted_rply.ar_stat = GARBAGE_ARGS; - SVC_REPLY(xprt, &rply); -} - -/* - * Some system error - */ -void -svcerr_systemerr( - register SVCXPRT *xprt ) -{ - struct rpc_msg rply; - - rply.rm_direction = REPLY; - rply.rm_reply.rp_stat = MSG_ACCEPTED; - rply.acpted_rply.ar_verf = xprt->xp_verf; - rply.acpted_rply.ar_stat = SYSTEM_ERR; - SVC_REPLY(xprt, &rply); -} - -/* - * Authentication error reply - */ -void -svcerr_auth( - SVCXPRT *xprt, - enum auth_stat why ) -{ - struct rpc_msg rply; - - rply.rm_direction = REPLY; - rply.rm_reply.rp_stat = MSG_DENIED; - rply.rjcted_rply.rj_stat = AUTH_ERROR; - rply.rjcted_rply.rj_why = why; - SVC_REPLY(xprt, &rply); -} - -/* - * Auth too weak error reply - */ -void -svcerr_weakauth( - SVCXPRT *xprt ) -{ - - svcerr_auth(xprt, AUTH_TOOWEAK); -} - -/* - * Program unavailable error reply - */ -void -svcerr_noprog( - register SVCXPRT *xprt ) -{ - struct rpc_msg rply; - - rply.rm_direction = REPLY; - rply.rm_reply.rp_stat = MSG_ACCEPTED; - rply.acpted_rply.ar_verf = xprt->xp_verf; - rply.acpted_rply.ar_stat = PROG_UNAVAIL; - SVC_REPLY(xprt, &rply); -} - -/* - * Program version mismatch error reply - */ -void -svcerr_progvers( - register SVCXPRT *xprt, - rpcvers_t low_vers, - rpcvers_t high_vers ) -{ - struct rpc_msg rply; - - rply.rm_direction = REPLY; - rply.rm_reply.rp_stat = MSG_ACCEPTED; - rply.acpted_rply.ar_verf = xprt->xp_verf; - rply.acpted_rply.ar_stat = PROG_MISMATCH; - rply.acpted_rply.ar_vers.low = low_vers; - rply.acpted_rply.ar_vers.high = high_vers; - SVC_REPLY(xprt, &rply); -} - -/* ******************* SERVER INPUT STUFF ******************* */ - -/* - * Get server side input from some transport. - * - * Statement of authentication parameters management: - * This function owns and manages all authentication parameters, specifically - * the "raw" parameters (msg.rm_call.cb_cred and msg.rm_call.cb_verf) and - * the "cooked" credentials (rqst->rq_clntcred). - * However, this function does not know the structure of the cooked - * credentials, so it make the following assumptions: - * a) the structure is contiguous (no pointers), and - * b) the cred structure size does not exceed RQCRED_SIZE bytes. - * In all events, all three parameters are freed upon exit from this routine. - * The storage is trivially management on the call stack in user land, but - * is mallocated in kernel land. - */ - -void -svc_getreq( - int rdfds ) -{ - fd_set readfds; - - FD_ZERO(&readfds); - readfds.fds_bits[0] = rdfds; - svc_getreqset(&readfds); -} - -void -svc_getreqset( - fd_set *readfds ) -{ - svc_getreqset2(readfds, FD_SETSIZE); -} - -void -svc_getreqset2( - fd_set *readfds, - int width ) -{ - enum xprt_stat stat; - struct rpc_msg msg; - int prog_found; - u_long low_vers; - u_long high_vers; - struct svc_req r; - register SVCXPRT *xprt; - register int bit; - register int sock; - register fd_mask mask, *maskp; - char cred_area[2*MAX_AUTH_BYTES + RQCRED_SIZE]; - msg.rm_call.cb_cred.oa_base = cred_area; - msg.rm_call.cb_verf.oa_base = &(cred_area[MAX_AUTH_BYTES]); - r.rq_clntcred = &(cred_area[2*MAX_AUTH_BYTES]); - - - maskp = readfds->fds_bits; - for (sock = 0; sock < width; sock += NFDBITS) { - for (mask = *maskp++; (bit = ffs(mask)); mask ^= (1 << (bit - 1))) { - /* sock has input waiting */ - xprt = xports[sock + bit - 1]; - if (xprt == NULL) - /* But do we control sock? */ - continue; - /* now receive msgs from xprtprt (support batch calls) */ - do { - if (SVC_RECV(xprt, &msg)) { - - /* now find the exported program and call it */ - register struct svc_callout *s; - enum auth_stat why; - - r.rq_xprt = xprt; - r.rq_prog = msg.rm_call.cb_prog; - r.rq_vers = msg.rm_call.cb_vers; - r.rq_proc = msg.rm_call.cb_proc; - r.rq_cred = msg.rm_call.cb_cred; - /* first authenticate the message */ - if ((why= _authenticate(&r, &msg)) != AUTH_OK) { - svcerr_auth(xprt, why); - goto call_done; - } - /* now match message with a registered service*/ - prog_found = FALSE; - low_vers = (u_long) - 1; - high_vers = 0; - for (s = svc_head; s != NULL_SVC; s = s->sc_next) { - if (s->sc_prog == r.rq_prog) { - if (s->sc_vers == r.rq_vers) { - (*s->sc_dispatch)(&r, xprt); - goto call_done; - } /* found correct version */ - prog_found = TRUE; - if (s->sc_vers < low_vers) - low_vers = s->sc_vers; - if (s->sc_vers > high_vers) - high_vers = s->sc_vers; - } /* found correct program */ - } - /* - * if we got here, the program or version - * is not served ... - */ - if (prog_found) - svcerr_progvers(xprt, - low_vers, high_vers); - else - svcerr_noprog(xprt); - /* Fall through to ... */ - } - call_done: - if ((stat = SVC_STAT(xprt)) == XPRT_DIED){ - SVC_DESTROY(xprt); - break; - } - } while (stat == XPRT_MOREREQS); - } - } -} |