Contents of /trunk/cpio/patches/cpio-2.9-CVE-2007-4476.patch
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Revision 725 -
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Mon Dec 22 23:30:56 2008 UTC (15 years, 5 months ago) by niro
File size: 2330 byte(s)
Mon Dec 22 23:30:56 2008 UTC (15 years, 5 months ago) by niro
File size: 2330 byte(s)
-added several cpio fixes
| 1 | http://bugs.gentoo.org/196978 |
| 2 | |
| 3 | --- lib/paxnames.c |
| 4 | +++ lib/paxnames.c |
| 5 | @@ -36,15 +36,27 @@ |
| 6 | return strcmp (name1, name2) == 0; |
| 7 | } |
| 8 | |
| 9 | -/* Return zero if TABLE contains a copy of STRING; otherwise, insert a |
| 10 | - copy of STRING to TABLE and return 1. */ |
| 11 | -bool |
| 12 | -hash_string_insert (Hash_table **table, char const *string) |
| 13 | +/* Return zero if TABLE contains a LEN-character long prefix of STRING, |
| 14 | + otherwise, insert a newly allocated copy of this prefix to TABLE and |
| 15 | + return 1. If RETURN_PREFIX is not NULL, point it to the allocated |
| 16 | + copy. */ |
| 17 | +static bool |
| 18 | +hash_string_insert_prefix (Hash_table **table, char const *string, size_t len, |
| 19 | + const char **return_prefix) |
| 20 | { |
| 21 | Hash_table *t = *table; |
| 22 | - char *s = xstrdup (string); |
| 23 | + char *s; |
| 24 | char *e; |
| 25 | |
| 26 | + if (len) |
| 27 | + { |
| 28 | + s = xmalloc (len + 1); |
| 29 | + memcpy (s, string, len); |
| 30 | + s[len] = 0; |
| 31 | + } |
| 32 | + else |
| 33 | + s = xstrdup (string); |
| 34 | + |
| 35 | if (! ((t |
| 36 | || (*table = t = hash_initialize (0, 0, hash_string_hasher, |
| 37 | hash_string_compare, 0))) |
| 38 | @@ -52,7 +64,11 @@ |
| 39 | xalloc_die (); |
| 40 | |
| 41 | if (e == s) |
| 42 | - return 1; |
| 43 | + { |
| 44 | + if (return_prefix) |
| 45 | + *return_prefix = s; |
| 46 | + return 1; |
| 47 | + } |
| 48 | else |
| 49 | { |
| 50 | free (s); |
| 51 | @@ -60,6 +76,14 @@ |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | +/* Return zero if TABLE contains a copy of STRING; otherwise, insert a |
| 56 | + copy of STRING to TABLE and return 1. */ |
| 57 | +bool |
| 58 | +hash_string_insert (Hash_table **table, char const *string) |
| 59 | +{ |
| 60 | + return hash_string_insert_prefix (table, string, 0, NULL); |
| 61 | +} |
| 62 | + |
| 63 | /* Return 1 if TABLE contains STRING. */ |
| 64 | bool |
| 65 | hash_string_lookup (Hash_table const *table, char const *string) |
| 66 | @@ -88,7 +112,8 @@ |
| 67 | If ABSOLUTE_NAMES is 0, strip filesystem prefix from the file name. */ |
| 68 | |
| 69 | char * |
| 70 | -safer_name_suffix (char const *file_name, bool link_target, bool absolute_names) |
| 71 | +safer_name_suffix (char const *file_name, bool link_target, |
| 72 | + bool absolute_names) |
| 73 | { |
| 74 | char const *p; |
| 75 | |
| 76 | @@ -121,11 +146,9 @@ |
| 77 | |
| 78 | if (prefix_len) |
| 79 | { |
| 80 | - char *prefix = alloca (prefix_len + 1); |
| 81 | - memcpy (prefix, file_name, prefix_len); |
| 82 | - prefix[prefix_len] = '\0'; |
| 83 | - |
| 84 | - if (hash_string_insert (&prefix_table[link_target], prefix)) |
| 85 | + const char *prefix; |
| 86 | + if (hash_string_insert_prefix (&prefix_table[link_target], file_name, |
| 87 | + prefix_len, &prefix)) |
| 88 | { |
| 89 | static char const *const diagnostic[] = |
| 90 | { |