#include "curl_setup.h"
#if defined(USE_OPENSSL) \
|| defined(USE_GSKIT) \
|| defined(USE_SCHANNEL)
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
#include "hostcheck.h"
#include "strcase.h"
#include "inet_pton.h"
#include "curl_memory.h"
#include "memdebug.h"
static int hostmatch(char *hostname, char *pattern)
{
const char *pattern_label_end, *pattern_wildcard, *hostname_label_end;
int wildcard_enabled;
size_t prefixlen, suffixlen;
struct in_addr ignored;
#ifdef ENABLE_IPV6
struct sockaddr_in6 si6;
#endif
size_t len = strlen(hostname);
if(hostname[len-1]=='.')
hostname[len-1] = 0;
len = strlen(pattern);
if(pattern[len-1]=='.')
pattern[len-1] = 0;
pattern_wildcard = strchr(pattern, '*');
if(pattern_wildcard == NULL)
return strcasecompare(pattern, hostname) ?
CURL_HOST_MATCH : CURL_HOST_NOMATCH;
if(Curl_inet_pton(AF_INET, hostname, &ignored) > 0)
return CURL_HOST_NOMATCH;
#ifdef ENABLE_IPV6
if(Curl_inet_pton(AF_INET6, hostname, &si6.sin6_addr) > 0)
return CURL_HOST_NOMATCH;
#endif
wildcard_enabled = 1;
pattern_label_end = strchr(pattern, '.');
if(pattern_label_end == NULL || strchr(pattern_label_end + 1, '.') == NULL ||
pattern_wildcard > pattern_label_end ||
strncasecompare(pattern, "xn--", 4)) {
wildcard_enabled = 0;
}
if(!wildcard_enabled)
return strcasecompare(pattern, hostname) ?
CURL_HOST_MATCH : CURL_HOST_NOMATCH;
hostname_label_end = strchr(hostname, '.');
if(hostname_label_end == NULL ||
!strcasecompare(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 strncasecompare(pattern, hostname, prefixlen) &&
strncasecompare(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)
{
char *matchp;
char *hostp;
int res = 0;
if(!match_pattern || !*match_pattern ||
!hostname || !*hostname)
;
else {
matchp = strdup(match_pattern);
if(matchp) {
hostp = strdup(hostname);
if(hostp) {
if(hostmatch(hostp, matchp) == CURL_HOST_MATCH)
res = 1;
free(hostp);
}
free(matchp);
}
}
return res;
}
#endif