124 lines
3.8 KiB
Plaintext
124 lines
3.8 KiB
Plaintext
BASH PATCH REPORT
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=================
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Bash-Release: 4.3
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Patch-ID: bash43-025
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Bug-Reported-by: Stephane Chazelas <stephane.chazelas@gmail.com>
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Bug-Reference-ID:
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Bug-Reference-URL:
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Bug-Description:
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Under certain circumstances, bash will execute user code while processing the
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environment for exported function definitions.
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Patch (apply with `patch -p0'):
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*** ../bash-4.3-patched/builtins/common.h 2013-07-08 16:54:47.000000000 -0400
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--- builtins/common.h 2014-09-12 14:25:47.000000000 -0400
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***************
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*** 34,37 ****
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--- 49,54 ----
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#define SEVAL_PARSEONLY 0x020
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#define SEVAL_NOLONGJMP 0x040
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+ #define SEVAL_FUNCDEF 0x080 /* only allow function definitions */
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+ #define SEVAL_ONECMD 0x100 /* only allow a single command */
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/* Flags for describe_command, shared between type.def and command.def */
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*** ../bash-4.3-patched/builtins/evalstring.c 2014-02-11 09:42:10.000000000 -0500
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--- builtins/evalstring.c 2014-09-14 14:15:13.000000000 -0400
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***************
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*** 309,312 ****
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--- 313,324 ----
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struct fd_bitmap *bitmap;
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+ if ((flags & SEVAL_FUNCDEF) && command->type != cm_function_def)
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+ {
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+ internal_warning ("%s: ignoring function definition attempt", from_file);
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+ should_jump_to_top_level = 0;
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+ last_result = last_command_exit_value = EX_BADUSAGE;
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+ break;
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+ }
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+
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bitmap = new_fd_bitmap (FD_BITMAP_SIZE);
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begin_unwind_frame ("pe_dispose");
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***************
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*** 369,372 ****
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--- 381,387 ----
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dispose_fd_bitmap (bitmap);
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discard_unwind_frame ("pe_dispose");
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+
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+ if (flags & SEVAL_ONECMD)
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+ break;
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}
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}
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*** ../bash-4.3-patched/variables.c 2014-05-15 08:26:50.000000000 -0400
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--- variables.c 2014-09-14 14:23:35.000000000 -0400
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***************
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*** 359,369 ****
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strcpy (temp_string + char_index + 1, string);
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! if (posixly_correct == 0 || legal_identifier (name))
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! parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST);
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!
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! /* Ancient backwards compatibility. Old versions of bash exported
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! functions like name()=() {...} */
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! if (name[char_index - 1] == ')' && name[char_index - 2] == '(')
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! name[char_index - 2] = '\0';
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if (temp_var = find_function (name))
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--- 364,372 ----
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strcpy (temp_string + char_index + 1, string);
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! /* Don't import function names that are invalid identifiers from the
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! environment, though we still allow them to be defined as shell
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! variables. */
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! if (legal_identifier (name))
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! parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST|SEVAL_FUNCDEF|SEVAL_ONECMD);
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if (temp_var = find_function (name))
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***************
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*** 382,389 ****
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report_error (_("error importing function definition for `%s'"), name);
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}
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-
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- /* ( */
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- if (name[char_index - 1] == ')' && name[char_index - 2] == '\0')
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- name[char_index - 2] = '('; /* ) */
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}
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#if defined (ARRAY_VARS)
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--- 385,388 ----
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*** ../bash-4.3-patched/subst.c 2014-08-11 11:16:35.000000000 -0400
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--- subst.c 2014-09-12 15:31:04.000000000 -0400
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***************
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*** 8048,8052 ****
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goto return0;
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}
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! else if (var = find_variable_last_nameref (temp1))
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{
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temp = nameref_cell (var);
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--- 8118,8124 ----
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goto return0;
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}
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! else if (var && (invisible_p (var) || var_isset (var) == 0))
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! temp = (char *)NULL;
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! else if ((var = find_variable_last_nameref (temp1)) && var_isset (var) && invisible_p (var) == 0)
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{
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temp = nameref_cell (var);
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*** ../bash-4.3/patchlevel.h 2012-12-29 10:47:57.000000000 -0500
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--- patchlevel.h 2014-03-20 20:01:28.000000000 -0400
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***************
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*** 26,30 ****
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 24
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#endif /* _PATCHLEVEL_H_ */
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--- 26,30 ----
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 25
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#endif /* _PATCHLEVEL_H_ */
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