+++ /dev/null
-/*
- * Copyright (c) 2009, Sun Microsystems, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * - Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * - Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * - Neither the name of Sun Microsystems, Inc. nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) 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.
- */
-//#include <sys/cdefs.h>
-
-/*
- * Copyright (c) 1989 by Sun Microsystems, Inc.
- */
-
-//#include <sys/cdefs.h>
-#include <wintirpc.h>
-#include <stdio.h>
-#include <errno.h>
-#include <netconfig.h>
-#include <stdlib.h>
-#include <string.h>
-//#include <syslog.h>
-
-/*
- * internal structure to keep track of a netpath "session"
- */
-struct netpath_chain {
- struct netconfig *ncp; /* an nconf entry */
- struct netpath_chain *nchain_next; /* next nconf entry allocated */
-};
-
-
-struct netpath_vars {
- int valid; /* token that indicates a valid netpath_vars */
- void *nc_handlep; /* handle for current netconfig "session" */
- char *netpath; /* pointer to current view-point in NETPATH */
- char *netpath_start; /* pointer to start of our copy of NETPATH */
- struct netpath_chain *ncp_list; /* list of nconfs allocated this session*/
-};
-
-#define NP_VALID 0xf00d
-#define NP_INVALID 0
-
-char *_get_next_token(char *, int);
-
-
-/*
- * A call to setnetpath() establishes a NETPATH "session". setnetpath()
- * must be called before the first call to getnetpath(). A "handle" is
- * returned to distinguish the session; this handle should be passed
- * subsequently to getnetpath(). (Handles are used to allow for nested calls
- * to setnetpath()).
- * If setnetpath() is unable to establish a session (due to lack of memory
- * resources, or the absence of the /etc/netconfig file), a NULL pointer is
- * returned.
- */
-
-void *
-setnetpath()
-{
-
- struct netpath_vars *np_sessionp; /* this session's variables */
- char *npp; /* NETPATH env variable */
-
-#ifdef MEM_CHK
- malloc_debug(1);
-#endif
-
- if ((np_sessionp =
- (struct netpath_vars *)malloc(sizeof (struct netpath_vars))) == NULL) {
- return (NULL);
- }
- if ((np_sessionp->nc_handlep = setnetconfig()) == NULL) {
- //syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
- return (NULL);
- }
- np_sessionp->valid = NP_VALID;
- np_sessionp->ncp_list = NULL;
- if ((npp = getenv(NETPATH)) == NULL) {
- np_sessionp->netpath = NULL;
- } else {
- (void) endnetconfig(np_sessionp->nc_handlep);/* won't need nc session*/
- np_sessionp->nc_handlep = NULL;
- if ((np_sessionp->netpath = malloc(strlen(npp)+1)) == NULL) {
- free(np_sessionp);
- return (NULL);
- } else {
- (void) strcpy(np_sessionp->netpath, npp);
- }
- }
- np_sessionp->netpath_start = np_sessionp->netpath;
- return ((void *)np_sessionp);
-}
-
-/*
- * When first called, getnetpath() returns a pointer to the netconfig
- * database entry corresponding to the first valid NETPATH component. The
- * netconfig entry is formatted as a struct netconfig.
- * On each subsequent call, getnetpath returns a pointer to the netconfig
- * entry that corresponds to the next valid NETPATH component. getnetpath
- * can thus be used to search the netconfig database for all networks
- * included in the NETPATH variable.
- * When NETPATH has been exhausted, getnetpath() returns NULL. It returns
- * NULL and sets errno in case of an error (e.g., setnetpath was not called
- * previously).
- * getnetpath() silently ignores invalid NETPATH components. A NETPATH
- * compnent is invalid if there is no corresponding entry in the netconfig
- * database.
- * If the NETPATH variable is unset, getnetpath() behaves as if NETPATH
- * were set to the sequence of default or visible networks in the netconfig
- * database, in the order in which they are listed.
- */
-
-struct netconfig *
-getnetpath(handlep)
- void *handlep;
-{
- struct netpath_vars *np_sessionp = (struct netpath_vars *)handlep;
- struct netconfig *ncp = NULL; /* temp. holds a netconfig session */
- struct netpath_chain *chainp; /* holds chain of ncp's we alloc */
- char *npp; /* holds current NETPATH */
-
- if (np_sessionp == NULL || np_sessionp->valid != NP_VALID) {
- errno = EINVAL;
- return (NULL);
- }
- if (np_sessionp->netpath_start == NULL) { /* NETPATH was not set */
- do { /* select next visible network */
- if (np_sessionp->nc_handlep == NULL) {
- np_sessionp->nc_handlep = setnetconfig();
- if (np_sessionp->nc_handlep == NULL) {
- //syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
- }
- }
- if ((ncp = getnetconfig(np_sessionp->nc_handlep)) == NULL) {
- return(NULL);
- }
- } while ((ncp->nc_flag & NC_VISIBLE) == 0);
- return (ncp);
- }
- /*
- * Find first valid network ID in netpath.
- */
- while ((npp = np_sessionp->netpath) != NULL && strlen(npp) != 0) {
- np_sessionp->netpath = _get_next_token(npp, ':');
- /*
- * npp is a network identifier.
- */
- if ((ncp = getnetconfigent(npp)) != NULL) {
- chainp = (struct netpath_chain *) /* cobble alloc chain entry */
- malloc(sizeof (struct netpath_chain));
- chainp->ncp = ncp;
- chainp->nchain_next = NULL;
- if (np_sessionp->ncp_list == NULL) {
- np_sessionp->ncp_list = chainp;
- } else {
- np_sessionp->ncp_list->nchain_next = chainp;
- }
- return (ncp);
- }
- /* couldn't find this token in the database; go to next one. */
- }
- return (NULL);
-}
-
-/*
- * endnetpath() may be called to unbind NETPATH when processing is complete,
- * releasing resources for reuse. It returns 0 on success and -1 on failure
- * (e.g. if setnetpath() was not called previously.
- */
-int
-endnetpath(handlep)
- void *handlep;
-{
- struct netpath_vars *np_sessionp = (struct netpath_vars *)handlep;
- struct netpath_chain *chainp, *lastp;
-
- if (np_sessionp == NULL || np_sessionp->valid != NP_VALID) {
- errno = EINVAL;
- return (-1);
- }
- if (np_sessionp->nc_handlep != NULL)
- endnetconfig(np_sessionp->nc_handlep);
- if (np_sessionp->netpath_start != NULL)
- free(np_sessionp->netpath_start);
- for (chainp = np_sessionp->ncp_list; chainp != NULL;
- lastp=chainp, chainp=chainp->nchain_next, free(lastp)) {
- freenetconfigent(chainp->ncp);
- }
- free(np_sessionp);
-#ifdef MEM_CHK
- if (malloc_verify() == 0) {
- fprintf(stderr, "memory heap corrupted in endnetpath\n");
- exit(1);
- }
-#endif
- return (0);
-}
-
-
-
-/*
- * Returns pointer to the rest-of-the-string after the current token.
- * The token itself starts at arg, and we null terminate it. We return NULL
- * if either the arg is empty, or if this is the last token.
- */
-
-char *
-_get_next_token(npp, token)
-char *npp; /* string */
-int token; /* char to parse string for */
-{
- char *cp; /* char pointer */
- char *np; /* netpath pointer */
- char *ep; /* escape pointer */
-
- if ((cp = strchr(npp, token)) == NULL) {
- return (NULL);
- }
- /*
- * did find a token, but it might be escaped.
- */
- if ((cp > npp) && (cp[-1] == '\\')) {
- /* if slash was also escaped, carry on, otherwise find next token */
- if ((cp > npp + 1) && (cp[-2] != '\\')) {
- /* shift r-o-s onto the escaped token */
- strcpy(&cp[-1], cp); /* XXX: overlapping string copy */
- /*
- * Do a recursive call.
- * We don't know how many escaped tokens there might be.
- */
- return (_get_next_token(cp, token));
- }
- }
-
- *cp++ = '\0'; /* null-terminate token */
- /* get rid of any backslash escapes */
- ep = npp;
- while ((np = strchr(ep, '\\')) != 0) {
- if (np[1] == '\\')
- np++;
- strcpy(np, (ep = &np[1])); /* XXX: overlapping string copy */
- }
- return (cp); /* return ptr to r-o-s */
-}
projects / reactos.git / blobdiff