#include "curl_setup.h"
#if defined(USE_SSLEAY) || defined(USE_AXTLS)
#include "hostcheck.h"
#include "rawstr.h"
static int hostmatch(const char *hostname, const char *pattern)
{
const char *pattern_label_end, *pattern_wildcard, *hostname_label_end;
int wildcard_enabled;
size_t prefixlen, suffixlen;
pattern_wildcard = strchr(pattern, '*');
if(pattern_wildcard == NULL)
return Curl_raw_equal(pattern, hostname) ?
CURL_HOST_MATCH : CURL_HOST_NOMATCH;
wildcard_enabled = 1;
pattern_label_end = strchr(pattern, '.');
if(pattern_label_end == NULL || strchr(pattern_label_end+1, '.') == NULL ||
pattern_wildcard > pattern_label_end ||
Curl_raw_nequal(pattern, "xn--", 4)) {
wildcard_enabled = 0;
}
if(!wildcard_enabled)
return Curl_raw_equal(pattern, hostname) ?
CURL_HOST_MATCH : CURL_HOST_NOMATCH;
hostname_label_end = strchr(hostname, '.');
if(hostname_label_end == NULL ||
!Curl_raw_equal(pattern_label_end, hostname_label_end))
return CURL_HOST_NOMATCH;
if(hostname_label_end - hostname < pattern_label_end - pattern)
return CURL_HOST_NOMATCH;
prefixlen = pattern_wildcard - pattern;
suffixlen = pattern_label_end - (pattern_wildcard+1);
return Curl_raw_nequal(pattern, hostname, prefixlen) &&
Curl_raw_nequal(pattern_wildcard+1, hostname_label_end - suffixlen,
suffixlen) ?
CURL_HOST_MATCH : CURL_HOST_NOMATCH;
}
int Curl_cert_hostcheck(const char *match_pattern, const char *hostname)
{
if(!match_pattern || !*match_pattern ||
!hostname || !*hostname)
return 0;
if(Curl_raw_equal(hostname, match_pattern))
return 1;
if(hostmatch(hostname,match_pattern) == CURL_HOST_MATCH)
return 1;
return 0;
}
#endif