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Fix to not send alert until after the verify cert callback and alternate chain logic has been evaluated.

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This commit is contained in:
David Garske
2019-12-04 12:41:23 -08:00
parent acd4bc3305
commit b01c558adb
1 changed files with 43 additions and 28 deletions
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71
src/internal.c
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@@ -9368,6 +9368,29 @@ typedef struct ProcPeerCertArgs {
#endif
} ProcPeerCertArgs;
static void DoCertFatalAlert(WOLFSSL* ssl, int ret)
{
int alertWhy;
if (ssl == NULL || ret == 0) {
return;
}
/* Determine alert reason */
alertWhy = bad_certificate;
if (ret == ASN_AFTER_DATE_E || ret == ASN_BEFORE_DATE_E) {
alertWhy = certificate_expired;
}
#if (defined(OPENSSL_ALL) || defined(WOLFSSL_APACHE_HTTPD))
else if (ret == CRL_CERT_REVOKED) {
alertWhy = certificate_revoked;
}
#endif
/* send fatal alert and mark connection closed */
SendAlert(ssl, alert_fatal, alertWhy); /* try to send */
ssl->options.isClosed = 1;
}
/* WOLFSSL_ALWAYS_VERIFY_CB: Use verify callback for success or failure cases */
/* WOLFSSL_VERIFY_CB_ALL_CERTS: Issue callback for all intermediate certificates */
@@ -9378,21 +9401,10 @@ typedef struct ProcPeerCertArgs {
static int DoVerifyCallback(WOLFSSL* ssl, int ret, ProcPeerCertArgs* args)
{
int verify_ok = 0, alertWhy = 0, use_cb = 0;
int verify_ok = 0, use_cb = 0;
/* Determine return code and alert reason */
if (ret != 0) {
alertWhy = bad_certificate;
if (ret == ASN_AFTER_DATE_E ||
ret == ASN_BEFORE_DATE_E) {
alertWhy = certificate_expired;
}
#if (defined(OPENSSL_ALL) || defined(WOLFSSL_APACHE_HTTPD))
else if (ret == CRL_CERT_REVOKED)
alertWhy = certificate_revoked;
#endif
}
else {
/* Determine if verify was okay */
if (ret == 0) {
verify_ok = 1;
}
@@ -9618,17 +9630,6 @@ static int DoVerifyCallback(WOLFSSL* ssl, int ret, ProcPeerCertArgs* args)
#endif
}
if (ret != 0) {
if (!ssl->options.verifyNone) {
/* handle failure */
SendAlert(ssl, alert_fatal, alertWhy); /* try to send */
ssl->options.isClosed = 1;
}
/* Report SSL error */
ssl->error = ret;
}
return ret;
}
@@ -10302,9 +10303,16 @@ int ProcessPeerCerts(WOLFSSL* ssl, byte* input, word32* inOutIdx,
}
/* Handle error codes */
if (ret != 0 && args->lastErr == 0) {
args->lastErr = ret; /* save error from last time */
ret = 0; /* reset error */
if (ret != 0) {
if (!ssl->options.verifyNone) {
DoCertFatalAlert(ssl, ret);
}
ssl->error = ret; /* Report SSL error */
if (args->lastErr == 0) {
args->lastErr = ret; /* save error from last time */
ret = 0; /* reset error */
}
}
FreeDecodedCert(args->dCert);
@@ -10876,6 +10884,13 @@ int ProcessPeerCerts(WOLFSSL* ssl, byte* input, word32* inOutIdx,
ret = ssl->error = 0;
}
if (ret != 0) {
if (!ssl->options.verifyNone) {
DoCertFatalAlert(ssl, ret);
}
ssl->error = ret; /* Report SSL error */
}
if (ret == 0 && ssl->options.side == WOLFSSL_CLIENT_END) {
ssl->options.serverState = SERVER_CERT_COMPLETE;
}