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#ShellShock

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Sep 25th, 2014
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  1. diff --git a/variables.c b/variables.c
  2. index cdc54bc..1a98efa 100644
  3. --- a/variables.c
  4. +++ b/variables.c
  5. @@ -347,85 +347,25 @@ initialize_shell_variables (env, privmode)
  6.  
  7. temp_var = (SHELL_VAR *)NULL;
  8.  
  9. - /* If exported function, define it now. Don't import functions from
  10. - the environment in privileged mode. */
  11. - if (privmode == 0 && read_but_dont_execute == 0 && STREQN ("() {", string, 4))
  12. + ro = 0;
  13. + if (posixly_correct && STREQ (name, "SHELLOPTS"))
  14. {
  15. - string_length = strlen (string);
  16. - temp_string = (char *)xmalloc (3 + string_length + char_index);
  17. -
  18. - strcpy (temp_string, name);
  19. - temp_string[char_index] = ' ';
  20. - strcpy (temp_string + char_index + 1, string);
  21. -
  22. - if (posixly_correct == 0 || legal_identifier (name))
  23. - parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST);
  24. -
  25. - /* Ancient backwards compatibility. Old versions of bash exported
  26. - functions like name()=() {...} */
  27. - if (name[char_index - 1] == ')' && name[char_index - 2] == '(')
  28. - name[char_index - 2] = '\0';
  29. -
  30. - if (temp_var = find_function (name))
  31. - {
  32. - VSETATTR (temp_var, (att_exported|att_imported));
  33. - array_needs_making = 1;
  34. - }
  35. - else
  36. - {
  37. - if (temp_var = bind_variable (name, string, 0))
  38. - {
  39. - VSETATTR (temp_var, (att_exported | att_imported | att_invisible));
  40. - array_needs_making = 1;
  41. - }
  42. - last_command_exit_value = 1;
  43. - report_error (_("error importing function definition for `%s'"), name);
  44. - }
  45. -
  46. - /* ( */
  47. - if (name[char_index - 1] == ')' && name[char_index - 2] == '\0')
  48. - name[char_index - 2] = '('; /* ) */
  49. + temp_var = find_variable ("SHELLOPTS");
  50. + ro = temp_var && readonly_p (temp_var);
  51. + if (temp_var)
  52. + VUNSETATTR (temp_var, att_readonly);
  53. }
  54. -#if defined (ARRAY_VARS)
  55. -# if ARRAY_EXPORT
  56. - /* Array variables may not yet be exported. */
  57. - else if (*string == '(' && string[1] == '[' && string[strlen (string) - 1] == ')')
  58. + temp_var = bind_variable (name, string, 0);
  59. + if (temp_var)
  60. {
  61. - string_length = 1;
  62. - temp_string = extract_array_assignment_list (string, &string_length);
  63. - temp_var = assign_array_from_string (name, temp_string);
  64. - FREE (temp_string);
  65. - VSETATTR (temp_var, (att_exported | att_imported));
  66. + if (legal_identifier (name))
  67. + VSETATTR (temp_var, (att_exported | att_imported));
  68. + else
  69. + VSETATTR (temp_var, (att_exported | att_imported | att_invisible));
  70. + if (ro)
  71. + VSETATTR (temp_var, att_readonly);
  72. array_needs_making = 1;
  73. }
  74. -# endif /* ARRAY_EXPORT */
  75. -#endif
  76. -#if 0
  77. - else if (legal_identifier (name))
  78. -#else
  79. - else
  80. -#endif
  81. - {
  82. - ro = 0;
  83. - if (posixly_correct && STREQ (name, "SHELLOPTS"))
  84. - {
  85. - temp_var = find_variable ("SHELLOPTS");
  86. - ro = temp_var && readonly_p (temp_var);
  87. - if (temp_var)
  88. - VUNSETATTR (temp_var, att_readonly);
  89. - }
  90. - temp_var = bind_variable (name, string, 0);
  91. - if (temp_var)
  92. - {
  93. - if (legal_identifier (name))
  94. - VSETATTR (temp_var, (att_exported | att_imported));
  95. - else
  96. - VSETATTR (temp_var, (att_exported | att_imported | att_invisible));
  97. - if (ro)
  98. - VSETATTR (temp_var, att_readonly);
  99. - array_needs_making = 1;
  100. - }
  101. - }
  102.  
  103. name[char_index] = '=';
  104. /* temp_var can be NULL if it was an exported function with a syntax
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