diff options
author | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2020-01-20 17:44:59 +0000 |
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committer | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2020-01-20 17:44:59 +0000 |
commit | ad93addd6db2dfd703888b24f7a9948d1f593c90 (patch) | |
tree | 02342b8bd55356702e70461b70c5b35fb237bae7 /lib | |
parent | 999d1697ec4a4da261c6e4a9a741b6dc5043ea4e (diff) | |
parent | f39b85db96c099c5f851f000cb74fb5200e05919 (diff) | |
download | gnutls-ad93addd6db2dfd703888b24f7a9948d1f593c90.tar.gz |
Merge branch 'tmp-tls13-ocsp' into 'master'
tls13: fix issues with client OCSP responses
Closes #876
See merge request gnutls/gnutls!1169
Diffstat (limited to 'lib')
-rw-r--r-- | lib/gnutls_int.h | 1 | ||||
-rw-r--r-- | lib/includes/gnutls/gnutls.h.in | 4 | ||||
-rw-r--r-- | lib/state.c | 2 | ||||
-rw-r--r-- | lib/tls13/certificate.c | 3 | ||||
-rw-r--r-- | lib/tls13/certificate_request.c | 25 |
5 files changed, 33 insertions, 2 deletions
diff --git a/lib/gnutls_int.h b/lib/gnutls_int.h index f7cf830ca1..b48805190a 100644 --- a/lib/gnutls_int.h +++ b/lib/gnutls_int.h @@ -1383,6 +1383,7 @@ typedef struct { #define HSK_RECORD_SIZE_LIMIT_SENT (1<<25) /* record_size_limit extension was sent */ #define HSK_RECORD_SIZE_LIMIT_RECEIVED (1<<26) /* server: record_size_limit extension was seen but not accepted yet */ #define HSK_OCSP_REQUESTED (1<<27) /* server: client requested OCSP stapling */ +#define HSK_CLIENT_OCSP_REQUESTED (1<<28) /* client: server requested OCSP stapling */ /* The hsk_flags are for use within the ongoing handshake; * they are reset to zero prior to handshake start by gnutls_handshake. */ diff --git a/lib/includes/gnutls/gnutls.h.in b/lib/includes/gnutls/gnutls.h.in index 1d0f924c26..61232de01b 100644 --- a/lib/includes/gnutls/gnutls.h.in +++ b/lib/includes/gnutls/gnutls.h.in @@ -1570,6 +1570,7 @@ unsigned gnutls_session_etm_status(gnutls_session_t session); * @GNUTLS_SFLAGS_EARLY_START: The TLS1.3 server session returned early. * @GNUTLS_SFLAGS_EARLY_DATA: The TLS1.3 early data has been received by the server. * @GNUTLS_SFLAGS_CLI_REQUESTED_OCSP: Set when the client has requested OCSP staple during handshake. + * @GNUTLS_SFLAGS_SERV_REQUESTED_OCSP: Set when the server has requested OCSP staple during handshake. * * Enumeration of different session parameters. */ @@ -1585,7 +1586,8 @@ typedef enum { GNUTLS_SFLAGS_POST_HANDSHAKE_AUTH = 1<<8, GNUTLS_SFLAGS_EARLY_START = 1<<9, GNUTLS_SFLAGS_EARLY_DATA = 1<<10, - GNUTLS_SFLAGS_CLI_REQUESTED_OCSP = 1<<11 + GNUTLS_SFLAGS_CLI_REQUESTED_OCSP = 1<<11, + GNUTLS_SFLAGS_SERV_REQUESTED_OCSP = 1<<12 } gnutls_session_flags_t; unsigned gnutls_session_get_flags(gnutls_session_t session); diff --git a/lib/state.c b/lib/state.c index 5e3a7f95aa..dff7312a87 100644 --- a/lib/state.c +++ b/lib/state.c @@ -1576,6 +1576,8 @@ unsigned gnutls_session_get_flags(gnutls_session_t session) flags |= GNUTLS_SFLAGS_EARLY_DATA; if (session->internals.hsk_flags & HSK_OCSP_REQUESTED) flags |= GNUTLS_SFLAGS_CLI_REQUESTED_OCSP; + if (session->internals.hsk_flags & HSK_CLIENT_OCSP_REQUESTED) + flags |= GNUTLS_SFLAGS_SERV_REQUESTED_OCSP; return flags; } diff --git a/lib/tls13/certificate.c b/lib/tls13/certificate.c index 82a45af336..7483251a53 100644 --- a/lib/tls13/certificate.c +++ b/lib/tls13/certificate.c @@ -273,7 +273,8 @@ int _gnutls13_send_certificate(gnutls_session_t session, unsigned again) #ifdef ENABLE_OCSP if ((session->internals.selected_ocsp_length > 0 || session->internals.selected_ocsp_func) && - (session->internals.hsk_flags & HSK_OCSP_REQUESTED)) { + (((session->internals.hsk_flags & HSK_OCSP_REQUESTED) && IS_SERVER(session)) || + ((session->internals.hsk_flags & HSK_CLIENT_OCSP_REQUESTED) && !IS_SERVER(session)))) { /* append status response if available */ ret = _gnutls_extv_append_init(&buf); if (ret < 0) { diff --git a/lib/tls13/certificate_request.c b/lib/tls13/certificate_request.c index 58fdbbc187..37e7b41049 100644 --- a/lib/tls13/certificate_request.c +++ b/lib/tls13/certificate_request.c @@ -26,6 +26,7 @@ #include "handshake.h" #include "tls13/certificate_request.h" #include "ext/signature.h" +#include "ext/status_request.h" #include "mbuffers.h" #include "algorithms.h" #include "auth/cert.h" @@ -108,6 +109,14 @@ int parse_cert_extension(void *_ctx, unsigned tls_id, const uint8_t *data, unsig ctx->pk_algos[ctx->pk_algos_length++] = se->pk; } +#ifdef ENABLE_OCSP + } else if (tls_id == ext_mod_status_request.tls_id) { + if (data_size != 0) + return gnutls_assert_val(GNUTLS_E_TLS_PACKET_DECODING_ERROR); + + /* we are now allowed to send OCSP staples */ + session->internals.hsk_flags |= HSK_CLIENT_OCSP_REQUESTED; +#endif } else if (tls_id == EXTID_CERTIFICATE_AUTHORITIES) { if (data_size < 3) { return gnutls_assert_val(GNUTLS_E_TLS_PACKET_DECODING_ERROR); @@ -257,6 +266,11 @@ int write_certificate_authorities(void *ctx, gnutls_buffer_st *buf) size); } +static int append_empty_ext(void *ctx, gnutls_buffer_st *buf) +{ + return GNUTLS_E_INT_RET_0; +} + int _gnutls13_send_certificate_request(gnutls_session_t session, unsigned again) { gnutls_certificate_credentials_t cred; @@ -332,6 +346,17 @@ int _gnutls13_send_certificate_request(gnutls_session_t session, unsigned again) goto cleanup; } +#ifdef ENABLE_OCSP + /* We always advertise our support for OCSP stapling */ + ret = _gnutls_extv_append(&buf, ext_mod_status_request.tls_id, session, + append_empty_ext); + if (ret < 0) { + gnutls_assert(); + goto cleanup; + } + session->internals.hsk_flags |= HSK_CLIENT_OCSP_REQUESTED; +#endif + ret = _gnutls_extv_append_final(&buf, init_pos, 0); if (ret < 0) { gnutls_assert(); |