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@@ -1,17 +1,17 @@
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-From 272d48fe7a2ff00285d4ee166d3a9beca1d5122f Mon Sep 17 00:00:00 2001
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+From eb9d4fdf1846e688d51d86a9a50f0312aca2af25 Mon Sep 17 00:00:00 2001
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From: Glenn Strauss <[email protected]>
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Date: Sun, 23 Oct 2022 19:48:18 -0400
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-Subject: [PATCH 1/4] x509 crt verify SAN iPAddress
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+Subject: [PATCH] x509 crt verify SAN iPAddress
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Signed-off-by: Glenn Strauss <[email protected]>
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---
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include/mbedtls/x509_crt.h | 2 +-
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- library/x509_crt.c | 115 +++++++++++++++++++++++++++++--------
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- 2 files changed, 93 insertions(+), 24 deletions(-)
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+ library/x509_crt.c | 126 ++++++++++++++++++++++++++++++-------
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+ 2 files changed, 103 insertions(+), 25 deletions(-)
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--- a/include/mbedtls/x509_crt.h
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+++ b/include/mbedtls/x509_crt.h
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-@@ -597,7 +597,7 @@ int mbedtls_x509_crt_verify_info( char *
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+@@ -608,7 +608,7 @@ int mbedtls_x509_crt_verify_info(char *b
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* \param cn The expected Common Name. This will be checked to be
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* present in the certificate's subjectAltNames extension or,
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* if this extension is absent, as a CN component in its
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@@ -22,12 +22,30 @@ Signed-off-by: Glenn Strauss <[email protected]>
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* If the verification couldn't be completed, the flag value is
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--- a/library/x509_crt.c
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+++ b/library/x509_crt.c
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-@@ -2986,6 +2986,54 @@ find_parent:
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+@@ -57,6 +57,10 @@
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+
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+ #if defined(MBEDTLS_HAVE_TIME)
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+ #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
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++#define WIN32_LEAN_AND_MEAN
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++#ifndef _WIN32_WINNT
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++#define _WIN32_WINNT 0x0600
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++#endif
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+ #include <windows.h>
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+ #else
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+ #include <time.h>
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+@@ -2995,6 +2999,61 @@ find_parent:
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}
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}
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+#ifdef _WIN32
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-+/* ??? */
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++#ifdef _MSC_VER
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++#pragma comment(lib, "ws2_32.lib")
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++#include <winsock2.h>
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++#include <ws2tcpip.h>
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++#elif (defined(__MINGW32__) || defined(__MINGW64__)) && _WIN32_WINNT >= 0x0600
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++#include <winsock2.h>
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++#include <ws2tcpip.h>
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++#endif
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+#elif defined(__sun)
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+/* Solaris requires -lsocket -lnsl for inet_pton() */
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+#elif defined(__has_include)
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@@ -51,128 +69,126 @@ Signed-off-by: Glenn Strauss <[email protected]>
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+ * provided by headers included (or not) via __has_include() above. */
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+#ifndef AF_INET6
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+
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-+#define x509_cn_inet_pton( cn, dst ) ( 0 )
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++#define x509_cn_inet_pton(cn, dst) (0)
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+
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+#else
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+
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-+static int x509_inet_pton_ipv6( const char *src, void *dst )
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++static int x509_inet_pton_ipv6(const char *src, void *dst)
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+{
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-+ return( inet_pton( AF_INET6, src, dst ) == 1 ? 0 : -1 );
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++ return inet_pton(AF_INET6, src, dst) == 1 ? 0 : -1;
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+}
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+
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-+static int x509_inet_pton_ipv4( const char *src, void *dst )
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++static int x509_inet_pton_ipv4(const char *src, void *dst)
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+{
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-+ return( inet_pton( AF_INET, src, dst ) == 1 ? 0 : -1 );
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++ return inet_pton(AF_INET, src, dst) == 1 ? 0 : -1;
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+}
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+
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+#endif /* AF_INET6 */
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+
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-+static size_t x509_cn_inet_pton( const char *cn, void *dst )
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++static size_t x509_cn_inet_pton(const char *cn, void *dst)
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+{
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-+ return( strchr( cn, ':' ) == NULL
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-+ ? x509_inet_pton_ipv4( cn, dst ) == 0 ? 4 : 0
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-+ : x509_inet_pton_ipv6( cn, dst ) == 0 ? 16 : 0 );
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++ return strchr(cn, ':') == NULL
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++ ? x509_inet_pton_ipv4(cn, dst) == 0 ? 4 : 0
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++ : x509_inet_pton_ipv6(cn, dst) == 0 ? 16 : 0;
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+}
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+
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/*
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* Check for CN match
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*/
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-@@ -3008,23 +3056,51 @@ static int x509_crt_check_cn( const mbed
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- return( -1 );
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+@@ -3015,24 +3074,51 @@ static int x509_crt_check_cn(const mbedt
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+ return -1;
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}
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-+static int x509_crt_check_san_ip( const mbedtls_x509_sequence *san,
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-+ const char *cn, size_t cn_len )
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++static int x509_crt_check_san_ip(const mbedtls_x509_sequence *san,
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++ const char *cn, size_t cn_len)
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+{
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+ uint32_t ip[4];
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-+ cn_len = x509_cn_inet_pton( cn, ip );
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-+ if( cn_len == 0 )
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-+ return( -1 );
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++ cn_len = x509_cn_inet_pton(cn, ip);
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++ if (cn_len == 0) {
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++ return -1;
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++ }
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+
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-+ for( const mbedtls_x509_sequence *cur = san; cur != NULL; cur = cur->next )
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-+ {
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++ for (const mbedtls_x509_sequence *cur = san; cur != NULL; cur = cur->next) {
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+ const unsigned char san_type = (unsigned char) cur->buf.tag &
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+ MBEDTLS_ASN1_TAG_VALUE_MASK;
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-+ if( san_type == MBEDTLS_X509_SAN_IP_ADDRESS &&
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-+ cur->buf.len == cn_len && memcmp( cur->buf.p, ip, cn_len ) == 0 )
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-+ return( 0 );
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++ if (san_type == MBEDTLS_X509_SAN_IP_ADDRESS &&
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++ cur->buf.len == cn_len && memcmp(cur->buf.p, ip, cn_len) == 0) {
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++ return 0;
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++ }
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+ }
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+
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-+ return( -1 );
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++ return -1;
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+}
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+
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/*
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* Check for SAN match, see RFC 5280 Section 4.2.1.6
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*/
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--static int x509_crt_check_san( const mbedtls_x509_buf *name,
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-+static int x509_crt_check_san( const mbedtls_x509_sequence *san,
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- const char *cn, size_t cn_len )
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+-static int x509_crt_check_san(const mbedtls_x509_buf *name,
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++static int x509_crt_check_san(const mbedtls_x509_sequence *san,
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+ const char *cn, size_t cn_len)
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{
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- const unsigned char san_type = (unsigned char) name->tag &
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- MBEDTLS_ASN1_TAG_VALUE_MASK;
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-
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- /* dNSName */
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-- if( san_type == MBEDTLS_X509_SAN_DNS_NAME )
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-- return( x509_crt_check_cn( name, cn, cn_len ) );
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--
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-- /* (We may handle other types here later.) */
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+- if (san_type == MBEDTLS_X509_SAN_DNS_NAME) {
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+- return x509_crt_check_cn(name, cn, cn_len);
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+ int san_ip = 0;
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-+ for( const mbedtls_x509_sequence *cur = san; cur != NULL; cur = cur->next )
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-+ {
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-+ switch( (unsigned char) cur->buf.tag & MBEDTLS_ASN1_TAG_VALUE_MASK )
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-+ {
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-+ case MBEDTLS_X509_SAN_DNS_NAME: /* dNSName */
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-+ if( x509_crt_check_cn( &cur->buf, cn, cn_len ) == 0 )
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-+ return( 0 );
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-+ break;
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-+ case MBEDTLS_X509_SAN_IP_ADDRESS: /* iPAddress */
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-+ san_ip = 1;
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-+ break;
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-+ /* (We may handle other types here later.) */
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-+ default: /* Unrecognized type */
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-+ break;
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++ for (const mbedtls_x509_sequence *cur = san; cur != NULL; cur = cur->next) {
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++ switch ((unsigned char) cur->buf.tag & MBEDTLS_ASN1_TAG_VALUE_MASK) {
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++ case MBEDTLS_X509_SAN_DNS_NAME: /* dNSName */
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++ if (x509_crt_check_cn(&cur->buf, cn, cn_len) == 0) {
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++ return 0;
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++ }
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++ break;
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++ case MBEDTLS_X509_SAN_IP_ADDRESS: /* iPAddress */
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++ san_ip = 1;
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++ break;
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++ /* (We may handle other types here later.) */
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++ default: /* Unrecognized type */
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++ break;
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+ }
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-+ }
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+ }
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+- /* (We may handle other types here later.) */
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+-
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- /* Unrecognized type */
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-- return( -1 );
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-+ return( san_ip ? x509_crt_check_san_ip( san, cn, cn_len ) : -1 );
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+- return -1;
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++ return san_ip ? x509_crt_check_san_ip(san, cn, cn_len) : -1;
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}
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/*
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-@@ -3035,19 +3111,12 @@ static void x509_crt_verify_name( const
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- uint32_t *flags )
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+@@ -3043,31 +3129,23 @@ static void x509_crt_verify_name(const m
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+ uint32_t *flags)
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{
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const mbedtls_x509_name *name;
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- const mbedtls_x509_sequence *cur;
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- size_t cn_len = strlen( cn );
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+ size_t cn_len = strlen(cn);
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- if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
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- {
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-- for( cur = &crt->subject_alt_names; cur != NULL; cur = cur->next )
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-- {
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-- if( x509_crt_check_san( &cur->buf, cn, cn_len ) == 0 )
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+ if (crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME) {
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+- for (cur = &crt->subject_alt_names; cur != NULL; cur = cur->next) {
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+- if (x509_crt_check_san(&cur->buf, cn, cn_len) == 0) {
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- break;
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+- }
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- }
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-
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-- if( cur == NULL )
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+- if (cur == NULL) {
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- *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
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-+ if( x509_crt_check_san( &crt->subject_alt_names, cn, cn_len ) == 0 )
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++ if (x509_crt_check_san(&crt->subject_alt_names, cn, cn_len) == 0) {
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+ return;
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- }
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- else
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- {
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-@@ -3056,13 +3125,13 @@ static void x509_crt_verify_name( const
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- if( MBEDTLS_OID_CMP( MBEDTLS_OID_AT_CN, &name->oid ) == 0 &&
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- x509_crt_check_cn( &name->val, cn, cn_len ) == 0 )
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- {
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+ }
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+ } else {
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+ for (name = &crt->subject; name != NULL; name = name->next) {
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+ if (MBEDTLS_OID_CMP(MBEDTLS_OID_AT_CN, &name->oid) == 0 &&
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+ x509_crt_check_cn(&name->val, cn, cn_len) == 0) {
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- break;
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+ return;
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}
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}
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-- if( name == NULL )
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+- if (name == NULL) {
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- *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
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+- }
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}
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+
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+ *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
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