getnetpath.c File Reference

#include <wintirpc.h>
#include <stdio.h>
#include <errno.h>
#include <netconfig.h>
#include <stdlib.h>
#include <string.h>

Include dependency graph for getnetpath.c:

Go to the source code of this file.

Classes
struct	netpath_chain
struct	netpath_vars

Macros
#define	NP_VALID   0xf00d
#define	NP_INVALID   0

Functions
char *	_get_next_token (char *, int)
void *	setnetpath ()
struct netconfig *	getnetpath (void *handlep)
int	endnetpath (void *handlep)

Macro Definition Documentation

NP_INVALID

#define NP_INVALID   0

Definition at line 61 of file getnetpath.c.

NP_VALID

#define NP_VALID   0xf00d

Definition at line 60 of file getnetpath.c.

Function Documentation

_get_next_token()

char * _get_next_token	(	char *	npp,
		int	token
	)

Definition at line 228 of file getnetpath.c.

{
    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 */
}

Referenced by _get_next_token(), getnetpath(), and parse_ncp().

endnetpath()

int endnetpath

(

void *

handlep

)

Definition at line 191 of file getnetpath.c.

{
    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);
}

Referenced by __rpc_endconf().

getnetpath()

struct netconfig * getnetpath

(

void *

handlep

)

Definition at line 134 of file getnetpath.c.

{
    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);
}

Referenced by __rpc_getconf().

setnetpath()

void * setnetpath

(

void

)

Definition at line 78 of file getnetpath.c.

{
 
    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);
}

Referenced by __rpc_setconf().