summaryrefslogtreecommitdiff
path: root/package/bash/bash-4.2-030.patch
blob: 7c6fef02bf94026dfbc7b323c770135fd151fcd1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
			     BASH PATCH REPORT
			     =================

Bash-Release:	4.2
Patch-ID:	bash42-030

Bug-Reported-by:	Roman Rakus <rrakus@redhat.com>
Bug-Reference-ID:	<4D7DD91E.7040808@redhat.com>
Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2011-03/msg00126.html

Bug-Description:

When attempting to glob strings in a multibyte locale, and those strings
contain invalid multibyte characters that cause mbsnrtowcs to return 0,
the globbing code loops infinitely.

Patch (apply with `patch -p0'):

*** ../bash-4.2-patched/lib/glob/xmbsrtowcs.c	2010-05-30 18:36:27.000000000 -0400
--- ./lib/glob/xmbsrtowcs.c	2011-03-22 16:06:47.000000000 -0400
***************
*** 36,39 ****
--- 36,41 ----
  #if HANDLE_MULTIBYTE
  
+ #define WSBUF_INC 32
+ 
  #ifndef FREE
  #  define FREE(x)	do { if (x) free (x); } while (0)
***************
*** 149,153 ****
    size_t wcnum;		/* Number of wide characters in WSBUF */
    mbstate_t state;	/* Conversion State */
!   size_t wcslength;	/* Number of wide characters produced by the conversion. */
    const char *end_or_backslash;
    size_t nms;	/* Number of multibyte characters to convert at one time. */
--- 151,155 ----
    size_t wcnum;		/* Number of wide characters in WSBUF */
    mbstate_t state;	/* Conversion State */
!   size_t n, wcslength;	/* Number of wide characters produced by the conversion. */
    const char *end_or_backslash;
    size_t nms;	/* Number of multibyte characters to convert at one time. */
***************
*** 172,176 ****
        tmp_p = p;
        tmp_state = state;
!       wcslength = mbsnrtowcs(NULL, &tmp_p, nms, 0, &tmp_state);
  
        /* Conversion failed. */
--- 174,189 ----
        tmp_p = p;
        tmp_state = state;
! 
!       if (nms == 0 && *p == '\\')	/* special initial case */
! 	nms = wcslength = 1;
!       else
! 	wcslength = mbsnrtowcs (NULL, &tmp_p, nms, 0, &tmp_state);
! 
!       if (wcslength == 0)
! 	{
! 	  tmp_p = p;		/* will need below */
! 	  tmp_state = state;
! 	  wcslength = 1;	/* take a single byte */
! 	}
  
        /* Conversion failed. */
***************
*** 187,191 ****
  	  wchar_t *wstmp;
  
! 	  wsbuf_size = wcnum+wcslength+1;	/* 1 for the L'\0' or the potential L'\\' */
  
  	  wstmp = (wchar_t *) realloc (wsbuf, wsbuf_size * sizeof (wchar_t));
--- 200,205 ----
  	  wchar_t *wstmp;
  
! 	  while (wsbuf_size < wcnum+wcslength+1) /* 1 for the L'\0' or the potential L'\\' */
! 	    wsbuf_size += WSBUF_INC;
  
  	  wstmp = (wchar_t *) realloc (wsbuf, wsbuf_size * sizeof (wchar_t));
***************
*** 200,207 ****
  
        /* Perform the conversion. This is assumed to return 'wcslength'.
!        * It may set 'p' to NULL. */
!       mbsnrtowcs(wsbuf+wcnum, &p, nms, wsbuf_size-wcnum, &state);
  
!       wcnum += wcslength;
  
        if (mbsinit (&state) && (p != NULL) && (*p == '\\'))
--- 214,229 ----
  
        /* Perform the conversion. This is assumed to return 'wcslength'.
! 	 It may set 'p' to NULL. */
!       n = mbsnrtowcs(wsbuf+wcnum, &p, nms, wsbuf_size-wcnum, &state);
  
!       /* Compensate for taking single byte on wcs conversion failure above. */
!       if (wcslength == 1 && (n == 0 || n == (size_t)-1))
! 	{
! 	  state = tmp_state;
! 	  p = tmp_p;
! 	  wsbuf[wcnum++] = *p++;
! 	}
!       else
!         wcnum += wcslength;
  
        if (mbsinit (&state) && (p != NULL) && (*p == '\\'))
***************
*** 231,236 ****
     of DESTP and INDICESP are NULL. */
  
- #define WSBUF_INC 32
- 
  size_t
  xdupmbstowcs (destp, indicesp, src)
--- 253,256 ----
*** ../bash-4.2-patched/lib/glob/glob.c	2009-11-14 18:39:30.000000000 -0500
--- ./lib/glob/glob.c	2012-07-07 12:09:56.000000000 -0400
***************
*** 201,206 ****
    size_t pat_n, dn_n;
  
    pat_n = xdupmbstowcs (&pat_wc, NULL, pat);
!   dn_n = xdupmbstowcs (&dn_wc, NULL, dname);
  
    ret = 0;
--- 201,209 ----
    size_t pat_n, dn_n;
  
+   pat_wc = dn_wc = (wchar_t *)NULL;
+ 
    pat_n = xdupmbstowcs (&pat_wc, NULL, pat);
!   if (pat_n != (size_t)-1)
!     dn_n = xdupmbstowcs (&dn_wc, NULL, dname);
  
    ret = 0;
***************
*** 222,225 ****
--- 225,230 ----
  	ret = 1;
      }
+   else
+     ret = skipname (pat, dname, flags);
  
    FREE (pat_wc);
***************
*** 267,272 ****
    n = xdupmbstowcs (&wpathname, NULL, pathname);
    if (n == (size_t) -1)
!     /* Something wrong. */
!     return;
    orig_wpathname = wpathname;
  
--- 272,280 ----
    n = xdupmbstowcs (&wpathname, NULL, pathname);
    if (n == (size_t) -1)
!     {
!       /* Something wrong.  Fall back to single-byte */
!       udequote_pathname (pathname);
!       return;
!     }
    orig_wpathname = wpathname;
  
*** ../bash-4.2-patched/patchlevel.h	Sat Jun 12 20:14:48 2010
--- ./patchlevel.h	Thu Feb 24 21:41:34 2011
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 29
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 30
  
  #endif /* _PATCHLEVEL_H_ */