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Philippe Raoult's fix to handle wildcard certificate name checks

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This commit is contained in:
Daniel Stenberg 2003-01-07 16:33:11 +00:00
parent ec24efda74
commit ca134d5522
1 changed files with 39 additions and 1 deletions
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40
lib/ssluse.c
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@ -672,6 +672,44 @@ static int Curl_ASN1_UTCTIME_output(struct connectdata *conn,
#endif
/* ====================================================== */
static int
cert_hostcheck(const char *certname, const char *hostname)
{
char *tmp;
const char *certdomain;
if(!certname ||
strlen(certname)<3 ||
!hostname ||
!strlen(hostname)) /* sanity check */
return 0;
if(strequal(certname, hostname)) /* trivial case */
return 1;
certdomain = certname + 1;
if((certname[0] != '*') || (certdomain[0] != '.'))
return 0; /* not a wildcard certificate, check failed */
if(!strchr(certdomain+1, '.'))
return 0; /* the certificate must have at least another dot in its name */
/* find 'certdomain' within 'hostname' */
tmp = strstr(hostname, certdomain);
if(tmp) {
/* ok the certname's domain matches the hostname, let's check that it's a
tail-match */
if(strequal(tmp, certdomain))
/* looks like a match. Just check we havent swallowed a '.' */
return tmp == strchr(hostname, '.');
else
return 0;
}
return 0;
}
/* ====================================================== */
CURLcode
Curl_SSLConnect(struct connectdata *conn)
@ -910,7 +948,7 @@ Curl_SSLConnect(struct connectdata *conn)
return CURLE_SSL_PEER_CERTIFICATE;
}
if (!strequal(peer_CN, conn->hostname)) {
if (!cert_hostcheck(peer_CN, conn->hostname)) {
if (data->set.ssl.verifyhost > 1) {
failf(data, "SSL: certificate subject name '%s' does not match "
"target host name '%s'",