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  1. /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> - All rights reserved
  2.  *
  3.  * Redistribution and use in source and binary forms, with or without
  4.  * modification, are permitted provided that the following conditions are met:
  5.  *
  6.  * Redistributions of source code must retain the above copyright notice, this
  7.  * list of conditions and the following disclaimer.
  8.  *
  9.  * Redistributions in binary form must reproduce the above copyright notice,
  10.  * this list of conditions and the following disclaimer in the documentation
  11.  * and/or other materials provided with the distribution.
  12.  *
  13.  * Neither the name of the original program's authors nor the names of its
  14.  * contributors may be used to endorse or promote products derived from this
  15.  * software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18.  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20.  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  21.  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  22.  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23.  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24.  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25.  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26.  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27.  * POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. #include <stdio.h>
  31. #include <string.h>
  32. #include <stdarg.h>
  33. #include <stdlib.h>
  34. #include <stdarg.h>
  35.  
  36. #include "config.h"
  37. #include "errors.h"
  38. #include "util.h"
  39.  
  40. extern volatile int cli_errno;
  41.  
  42. /* Count and return the # of elements in an array */
  43. unsigned int cli_count_args(char **args)
  44. {
  45.     unsigned int i;
  46.  
  47.     for (i=0; args[i] != NULL; i++);
  48.     return i;
  49. }
  50.  
  51. /* (re)allocates memory to store the current working directory, gets
  52.  * and updates the current working directory, formats the prompt
  53.  * string */
  54. unsigned int cli_set_prompt(cliuser_t *usr)
  55. {
  56.     usr->prompt = (char *) realloc(usr->prompt, PATH_MAX);
  57.     if (NULL == usr->prompt) {
  58.         cli_error(CL_ENOMEM, "Can not allocate prompt");
  59.         cli_errno = CL_ENOMEM;
  60.         return 1;
  61.     }
  62.     memset(usr->prompt, 0, sizeof(usr->prompt));
  63.  
  64.     usr->cwd = (char *) realloc(usr->cwd, PATH_MAX);
  65.     if (NULL == usr->cwd) {
  66.         cli_error(CL_ENOMEM, "Can not allocate cwd");
  67.         cli_errno = CL_ENOMEM;
  68.         return 1;
  69.     }
  70.     memset(usr->cwd, 0, sizeof(usr->cwd));
  71.  
  72.     usr->cwd = getcwd(usr->cwd, PATH_MAX - 1);
  73.  
  74.     if (NULL == usr->cwd)
  75.         snprintf(usr->cwd, PATH_MAX, "(unknown)");
  76.  
  77.     asprintf(&usr->prompt, "%s # ", usr->cwd);
  78.  
  79.     return 0;
  80. }
  81.  
  82.  
  83.