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Convert domains to lowercase before libpsl checks

This commit is contained in:
Darshit Shah 2014-07-05 16:21:40 +05:30
parent 550cd6e9d2
commit c5f2c7fcef
2 changed files with 33 additions and 2 deletions
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5
src/ChangeLog
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@ -1,3 +1,8 @@
2014-07-05 Darshit Shah <darnir@gmail.com>
* cookies.c (check_domain_match): Libpsl requires that all domain names
passed to it be in utf8 lower case.
2014-07-05 Darshit Shah <darnir@gmail.com>
* http.c (gethttp): Fix indentation of conditional block

30
src/cookies.c
View File

@ -501,7 +501,17 @@ numeric_address_p (const char *addr)
/* Check whether COOKIE_DOMAIN is an appropriate domain for HOST.
Originally I tried to make the check compliant with rfc2109, but
the sites deviated too often, so I had to fall back to "tail
matching", as defined by the original Netscape's cookie spec. */
matching", as defined by the original Netscape's cookie spec.
Wget now uses libpsl to check domain names against a public suffix
list to see if they are valid. However, since we don't provide a
psl on our own, if libpsl is compiled without a public suffix list,
fall back to using the original "tail matching" heuristic. Also if
libpsl is unable to convert the domain to lowercase, which means that
it doesnt have any runtime conversion support, we again fall back to
"tail matching" since libpsl states the results are unpredictable with
upper case strings.
*/
static bool
check_domain_match (const char *cookie_domain, const char *host)
@ -509,6 +519,8 @@ check_domain_match (const char *cookie_domain, const char *host)
#ifdef HAVE_LIBPSL
DEBUGP (("cdm: 1"));
char *cookie_domain_lower = NULL;
char *host_lower = NULL;
const psl_ctx_t *psl;
int is_acceptable;
@ -519,7 +531,21 @@ check_domain_match (const char *cookie_domain, const char *host)
goto no_psl;
}
is_acceptable = psl_is_cookie_domain_acceptable (psl, host, cookie_domain);
if (psl_str_to_utf8lower (cookie_domain, NULL, NULL, &cookie_domain_lower) == PSL_SUCCESS &&
psl_str_to_utf8lower (host, NULL, NULL, &host_lower) == PSL_SUCCESS)
{
is_acceptable = psl_is_cookie_domain_acceptable (psl, host_lower, cookie_domain_lower);
}
else
{
DEBUGP (("libpsl unable to parse domain name. "
"Falling back to simple heuristics.\n"));
goto no_psl;
}
xfree (cookie_domain_lower);
xfree (host_lower);
return true ? (is_acceptable == 1) : false;
no_psl: