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ifcfg-rh: fix svEscape() to properly handle double quoting

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'\'', '~': must not be escaped with backslash.

Also, within double quotes the backslash escape character is only
removed before special caracters like '$' or '`'. Not in general.
Yes, it means that older versions of svEscape produced invalid escape
sequences that we now treat differently. But that is not realy
avoidable, it was a bug that needs to be fixed.
This commit is contained in:
Thomas Haller 2016-10-31 22:53:26 +01:00
parent 337fc582b2
commit d8c465a3cd
2 changed files with 22 additions and 7 deletions
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11
src/settings/plugins/ifcfg-rh/shvar.c
View file

@ -174,8 +174,8 @@ _escape_ansic (const char *source)
#define _char_in_strset(ch, str) (!!strchr (""str"", (ch)))
#define ESC_ESCAPEES "\"'\\$~`" /* must be escaped */
#define ESC_SPACES " \t|&;()<>" /* only require "" */
#define ESC_ESCAPEES "\"\\$`" /* must be escaped */
#define ESC_SPACES " '\t~|&;()<>" /* only require "" */
const char *
svEscape (const char *s, char **to_free)
@ -385,11 +385,8 @@ svUnescape (const char *value, char **to_free)
/* we don't support line continuation */
goto out_error;
}
if (!NM_IN_SET (value[i], '$', '`', '"', '\\')) {
/* TODO: svEscape() is not yet ready to handle properly treating
* double quotes. */
//g_string_append_c (str, '\\');
}
if (!NM_IN_SET (value[i], '$', '`', '"', '\\'))
g_string_append_c (str, '\\');
}
g_string_append_c (str, value[i]);
i++;

18
src/settings/plugins/ifcfg-rh/tests/test-ifcfg-rh.c
View file

@ -8813,6 +8813,24 @@ test_svUnescape (void)
V0 ("\t #a", ""),
V0 ("\t #a\r", ""),
V0 ("\r", ""),
V1 ("\\\"", "\""),
V1 ("\\`", "`"),
V1 ("\\$", "$"),
V1 ("\\\\", "\\"),
V1 ("\\a", "a"),
V1 ("\\b", "b"),
V1 ("\\'", "'"),
V1 ("\\~", "~"),
V1 ("\\\t", "\t"),
V1 ("\"\\\"\"", "\""),
V1 ("\"\\`\"", "`"),
V1 ("\"\\$\"", "$"),
V1 ("\"\\\\\"", "\\"),
V1 ("\"\\a\"", "\\a"),
V1 ("\"\\b\"", "\\b"),
V1 ("\"\\'\"", "\\'"),
V1 ("\"\\~\"", "\\~"),
V1 ("\"\\\t\"", "\\\t"),
V0 ("ab\r", "ab"),
V0 ("a'b'\r ", "ab"),
V0 ("a'b' \r", "ab"),