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3265 post 1 
/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
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 * Copyright (C) 1998 by Wes Peters <wes@softweyr.com>
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 * Copyright (c) 1988, 1993 The Regents of the University of California.
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 * All rights reserved by all copyright holders.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *
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 * Redistributions of source code must retain the above copyright notice, this
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 * list of conditions and the following disclaimer.
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 *
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 * Redistributions in binary form must reproduce the above copyright notice,
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 * this list of conditions and the following disclaimer in the documentation
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 * and/or other materials provided with the distribution.
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 *
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 * Neither the name of the original program's authors nor the names of its
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 * contributors may be used to endorse or promote products derived from this
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 * software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 * POSSIBILITY OF SUCH DAMAGE.
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 */
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/* NOTES:
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 * 1 - Various functions were adapted from FreeBSD (copyright holders noted above)
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 *     these functions are identified with comments.
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 *
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 * 2 - Some of these have since appeared in libc. They remain here for various
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 *     reasons, such as the eventual integration of garbage collection for things
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 *     that allocate memory and don't automatically free it.
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 *
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 * 3 - Things that expect a pointer to an allocated string do _no_ sanity checking
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 *     if developing on a simulator with no debugger, take care :)
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 */
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdlib.h>
3345 post 49 
#include <stdarg.h>
3265 post 50 
 
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#include "config.h"
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#include "errors.h"
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#include "util.h"
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3366 post 55 
extern volatile int cli_errno;
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3345 post 57 
/* some platforms do not have strdup, implement it here.
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 * Returns a pointer to an allocated string or NULL on failure */
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char * cli_strdup(const char *s1)
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{
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    size_t len = strlen(s1) + 1;
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    void *ret = malloc(len);
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3366 post 64 
    if (ret == NULL) {
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        cli_errno = CL_ENOMEM;
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        return (char *) NULL;
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    }
3265 post 68 
 
3366 post 69 
    cli_errno = CL_EOK;
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    return (char *) memcpy(ret, s1, len);
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}
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/* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */
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char * cli_strtok_r(char *s, const char *delim, char **last)
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{
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    char *spanp, *tok;
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    int c, sc;
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3366 post 79 
    if (s == NULL && (s = *last) == NULL) {
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        cli_errno = CL_EFAIL;
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        return (NULL);
3366 post 82 
    }
3265 post 83 
 
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cont:
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    c = *s++;
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    for (spanp = (char *)delim; (sc = *spanp++) != 0;) {
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        if (c == sc)
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            goto cont;
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    }
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    if (c == 0) {       /* no non-delimiter characters */
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        *last = NULL;
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        return (NULL);
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    }
3269 post 95 
 
3265 post 96 
    tok = s - 1;
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    for (;;) {
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        c = *s++;
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        spanp = (char *)delim;
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        do {
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            if ((sc = *spanp++) == c) {
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                if (c == 0)
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                    s = NULL;
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                else
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                    s[-1] = '\0';
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                *last = s;
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                return (tok);
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            }
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        } while (sc != 0);
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    }
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}
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/* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */
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char * cli_strtok(char *s, const char *delim)
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{
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    static char *last;
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    return (cli_strtok_r(s, delim, &last));
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}
3376 post 121 
 
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/* Count and return the # of elements in an array */
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unsigned int cli_count_args(char **args)
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{
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    unsigned int i;
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    for (i=0; args[i] != NULL; i++);
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    return i;
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}
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3377 post 131 
/* (re)allocates memory to store the current working directory, gets
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 * and updates the current working directory, formats the prompt
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 * string */
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unsigned int cli_set_prompt(cliuser_t *usr)
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{
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    usr->prompt = (char *) realloc(usr->prompt, PATH_MAX);
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    if (NULL == usr->prompt) {
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        cli_error(CL_ENOMEM, "Can not allocate prompt");
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        cli_errno = CL_ENOMEM;
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        return 1;
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    }
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    memset(usr->prompt, 0, sizeof(usr->prompt));
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    usr->cwd = (char *) realloc(usr->cwd, PATH_MAX);
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    if (NULL == usr->cwd) {
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        cli_error(CL_ENOMEM, "Can not allocate cwd");
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        cli_errno = CL_ENOMEM;
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        return 1;
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    }
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    memset(usr->cwd, 0, sizeof(usr->cwd));
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    usr->cwd = getcwd(usr->cwd, PATH_MAX - 1);
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154 
    if (NULL == usr->cwd)
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        snprintf(usr->cwd, PATH_MAX, "(unknown)");
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3536 svoboda 157 
    asprintf(&usr->prompt, "%s # ", usr->cwd);
3377 post 158 
 
159 
    return 0;
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}
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