author | Niveditha Rau <Niveditha.Rau@Oracle.COM> |
Tue, 11 Oct 2016 11:08:35 -0700 | |
changeset 7086 | bad5d0bc7457 |
parent 5518 | c47fe0edc204 |
permissions | -rw-r--r-- |
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BASH PATCH REPORT |
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================= |
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Bash-Release: 4.3 |
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Patch-ID: bash43-031 |
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Bug-Reported-by: lolilolicon <[email protected]> |
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Bug-Reference-ID: <CAMtVo_Nz=32Oq=zWTb6=+8gUNXOo2rRvud1W4oPnA-cgVk_ZqQ@mail.gmail.com> |
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Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2014-08/msg00139.html |
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|
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Bug-Description: |
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The new nameref assignment functionality introduced in bash-4.3 did not perform |
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enough validation on the variable value and would create variables with |
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invalid names. |
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Patch (apply with `patch -p0'): |
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*** ../bash-4.3-patched/subst.h 2014-01-11 21:02:27.000000000 -0500 |
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--- subst.h 2014-09-01 12:16:56.000000000 -0400 |
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*************** |
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*** 48,51 **** |
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--- 48,52 ---- |
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#define ASS_MKGLOBAL 0x0008 /* force global assignment */ |
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#define ASS_NAMEREF 0x0010 /* assigning to nameref variable */ |
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+ #define ASS_FROMREF 0x0020 /* assigning from value of nameref variable */ |
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/* Flags for the string extraction functions. */ |
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*** ../bash-4.3-patched/variables.c 2014-05-15 08:26:50.000000000 -0400 |
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--- variables.c 2014-09-01 14:37:44.000000000 -0400 |
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*************** |
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*** 2504,2511 **** |
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int hflags, aflags; |
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{ |
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! char *newval; |
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SHELL_VAR *entry; |
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entry = (hflags & HASH_NOSRCH) ? (SHELL_VAR *)NULL : hash_lookup (name, table); |
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/* Follow the nameref chain here if this is the global variables table */ |
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if (entry && nameref_p (entry) && (invisible_p (entry) == 0) && table == global_variables->table) |
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--- 2566,2590 ---- |
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int hflags, aflags; |
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{ |
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! char *newname, *newval; |
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SHELL_VAR *entry; |
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+ #if defined (ARRAY_VARS) |
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+ arrayind_t ind; |
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+ char *subp; |
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+ int sublen; |
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+ #endif |
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+ newname = 0; |
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+ #if defined (ARRAY_VARS) |
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+ if ((aflags & ASS_FROMREF) && (hflags & HASH_NOSRCH) == 0 && valid_array_reference (name)) |
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+ { |
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+ newname = array_variable_name (name, &subp, &sublen); |
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+ if (newname == 0) |
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+ return (SHELL_VAR *)NULL; /* XXX */ |
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+ entry = hash_lookup (newname, table); |
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+ } |
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+ else |
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+ #endif |
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entry = (hflags & HASH_NOSRCH) ? (SHELL_VAR *)NULL : hash_lookup (name, table); |
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+ |
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/* Follow the nameref chain here if this is the global variables table */ |
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if (entry && nameref_p (entry) && (invisible_p (entry) == 0) && table == global_variables->table) |
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*************** |
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*** 2538,2541 **** |
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--- 2617,2630 ---- |
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} |
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} |
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+ #if defined (ARRAY_VARS) |
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+ else if (entry == 0 && newname) |
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+ { |
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+ entry = make_new_array_variable (newname); /* indexed array by default */ |
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+ if (entry == 0) |
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+ return entry; |
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+ ind = array_expand_index (name, subp, sublen); |
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+ bind_array_element (entry, ind, value, aflags); |
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+ } |
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+ #endif |
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else if (entry == 0) |
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{ |
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*************** |
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*** 2658,2662 **** |
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if (nameref_cell (nv) == 0) |
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return (bind_variable_internal (nv->name, value, nvc->table, 0, flags)); |
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! return (bind_variable_internal (nameref_cell (nv), value, nvc->table, 0, flags)); |
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} |
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else |
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--- 2747,2752 ---- |
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if (nameref_cell (nv) == 0) |
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return (bind_variable_internal (nv->name, value, nvc->table, 0, flags)); |
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! /* XXX - bug here with ref=array[index] */ |
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! return (bind_variable_internal (nameref_cell (nv), value, nvc->table, 0, flags|ASS_FROMREF)); |
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} |
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else |
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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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|
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! #define PATCHLEVEL 30 |
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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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|
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! #define PATCHLEVEL 31 |
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#endif /* _PATCHLEVEL_H_ */ |