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  1. /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
  2.  * All rights reserved.
  3.  *
  4.  * Redistribution and use in source and binary forms, with or without
  5.  * modification, are permitted provided that the following conditions are met:
  6.  *
  7.  * Redistributions of source code must retain the above copyright notice, this
  8.  * list of conditions and the following disclaimer.
  9.  *
  10.  * Redistributions in binary form must reproduce the above copyright notice,
  11.  * this list of conditions and the following disclaimer in the documentation
  12.  * and/or other materials provided with the distribution.
  13.  *
  14.  * Neither the name of the original program's authors nor the names of its
  15.  * contributors may be used to endorse or promote products derived from this
  16.  * software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19.  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21.  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  22.  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23.  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24.  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25.  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26.  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27.  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28.  * POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. #include <stdio.h>
  32. #include <string.h>
  33. #include <stdlib.h>
  34. #include <unistd.h>
  35. #include <stdarg.h>
  36.  
  37. #include "config.h"
  38. #include "errors.h"
  39. #include "errstr.h"
  40.  
  41. /* Error printing, translation and handling functions */
  42.  
  43. volatile int cli_lasterr = 0;
  44. extern volatile unsigned int cli_verbocity;
  45.  
  46. /* Look up errno in cl_errors and return the corresponding string.
  47.  * Return NULL if not found */
  48. char *err2str(int errno)
  49. {
  50.  
  51.     if (NULL != cl_errors[errno])
  52.         return cl_errors[errno];
  53.  
  54.     return (char *)NULL;
  55. }
  56.  
  57. /* Print an error report signifying errno, which is translated to
  58.  * its corresponding human readable string. If errno > 0, raise the
  59.  * cli_quit int that tells the main program loop to exit immediately */
  60.  
  61. void cli_error(int errno, const char *fmt, ...)
  62. {
  63.     va_list vargs;
  64.     va_start(vargs, fmt);
  65.     vprintf(fmt, vargs);
  66.     va_end(vargs);
  67.  
  68.     if (NULL != err2str(errno))
  69.         printf(" (%s)\n", err2str(errno));
  70.     else
  71.         printf(" (Unknown Error %d)\n", errno);
  72.  
  73.     if (errno < 0)
  74.         exit(EXIT_FAILURE);
  75.  
  76. }
  77.  
  78. /* Just a smart printf(), print the string only if cli_verbocity is high */
  79. void cli_verbose(const char *fmt, ...)
  80. {
  81.     if (cli_verbocity) {
  82.         va_list vargs;
  83.  
  84.         printf("[*] ");
  85.         va_start(vargs, fmt);
  86.         vprintf(fmt, vargs);
  87.         va_end(vargs);
  88.         printf("\n");
  89.     }
  90.     return;
  91. }
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  96.