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Pass characters to be escaped to tor_escape_str_for_socks_arg().

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This is in preparation for using tor_escape_str_for_socks_arg() to
escape server-side pluggable transport parameters.
This commit is contained in:
George Kadianakis 2013-06-12 16:23:16 +03:00 committed by Nick Mathewson
parent 6cfc2b5d73
commit ea72958f25
4 changed files with 12 additions and 13 deletions
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10
src/common/util.c
View File

@ -1223,17 +1223,15 @@ escaped(const char *s)
return escaped_val_;
}
/** Escape every ";" or "\" character of <b>string</b>. Use
* <b>escape_char</b> as the character to use for escaping.
* The returned string is allocated on the heap and it's the
* responsibility of the caller to free it. */
/** Escape every character of <b>string</b> that is in
* <b>chars_to_escape</b>. The returned string is allocated on the
* heap and it's the responsibility of the caller to free it. */
char *
tor_escape_str_for_socks_arg(const char *string)
tor_escape_str_for_socks_arg(const char *string, const char *chars_to_escape)
{
char *new_string = NULL;
char *new_cp = NULL;
size_t length, new_length;
static const char *chars_to_escape = ";\\";
tor_assert(string);

3
src/common/util.h
View File

@ -231,7 +231,8 @@ int tor_digest256_is_zero(const char *digest);
char *esc_for_log(const char *string) ATTR_MALLOC;
const char *escaped(const char *string);
char *tor_escape_str_for_socks_arg(const char *string);
char *tor_escape_str_for_socks_arg(const char *string,
const char *chars_to_escape);
struct smartlist_t;
int tor_vsscanf(const char *buf, const char *pattern, va_list ap) \

2
src/or/transports.c
View File

@ -1440,7 +1440,7 @@ pt_stringify_socks_args(const smartlist_t *socks_args)
SMARTLIST_FOREACH_BEGIN(socks_args, const char *, s) {
/* Escape ';' and '\'. */
escaped_string = tor_escape_str_for_socks_arg(s);
escaped_string = tor_escape_str_for_socks_arg(s, ";\\");
if (!escaped_string)
goto done;

10
src/test/test_util.c
View File

@ -803,30 +803,30 @@ test_util_escape_string_socks(void)
char *escaped_string = NULL;
/** Simple backslash escape. */
escaped_string = tor_escape_str_for_socks_arg("This is a backslash: \\");
escaped_string = tor_escape_str_for_socks_arg("This is a backslash: \\", ";\\");
test_assert(escaped_string);
test_streq(escaped_string, "This is a backslash: \\\\");
tor_free(escaped_string);
/** Simple semicolon escape. */
escaped_string = tor_escape_str_for_socks_arg("First rule: Do not use ;");
escaped_string = tor_escape_str_for_socks_arg("First rule: Do not use ;", ";\\");
test_assert(escaped_string);
test_streq(escaped_string, "First rule: Do not use \\;");
tor_free(escaped_string);
/** Empty string. */
escaped_string = tor_escape_str_for_socks_arg("");
escaped_string = tor_escape_str_for_socks_arg("", ";\\");
test_assert(escaped_string);
test_streq(escaped_string, "");
tor_free(escaped_string);
/** Escape all characters. */
escaped_string = tor_escape_str_for_socks_arg(";\\;\\");
escaped_string = tor_escape_str_for_socks_arg(";\\;\\", ";\\");
test_assert(escaped_string);
test_streq(escaped_string, "\\;\\\\\\;\\\\");
tor_free(escaped_string);
escaped_string = tor_escape_str_for_socks_arg(";");
escaped_string = tor_escape_str_for_socks_arg(";", ";\\");
test_assert(escaped_string);
test_streq(escaped_string, "\\;");
tor_free(escaped_string);