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Description: Support OpenSSL 1.1
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When building with OpenSSL 1.1 and newer, use the new built-in
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hostname verification instead of code that doesn't compile due to
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structs having been made opaque.
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Bug-Debian: https://bugs.debian.org/828589
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--- a/src/osdep/unix/ssl_unix.c
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+++ b/src/osdep/unix/ssl_unix.c
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@@ -227,8 +227,16 @@ static char *ssl_start_work (SSLSTREAM *
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/* disable certificate validation? */
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if (flags & NET_NOVALIDATECERT)
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SSL_CTX_set_verify (stream->context,SSL_VERIFY_NONE,NIL);
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- else SSL_CTX_set_verify (stream->context,SSL_VERIFY_PEER,ssl_open_verify);
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+ else {
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+#if OPENSSL_VERSION_NUMBER >= 0x10100000
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+ X509_VERIFY_PARAM *param = SSL_CTX_get0_param(stream->context);
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+ X509_VERIFY_PARAM_set_hostflags(param, X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS);
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+ X509_VERIFY_PARAM_set1_host(param, host, 0);
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+#endif
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+
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+ SSL_CTX_set_verify (stream->context,SSL_VERIFY_PEER,ssl_open_verify);
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/* set default paths to CAs... */
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+ }
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SSL_CTX_set_default_verify_paths (stream->context);
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/* ...unless a non-standard path desired */
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if (s = (char *) mail_parameters (NIL,GET_SSLCAPATH,NIL))
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@@ -266,6 +274,7 @@ static char *ssl_start_work (SSLSTREAM *
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if (SSL_write (stream->con,"",0) < 0)
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return ssl_last_error ? ssl_last_error : "SSL negotiation failed";
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/* need to validate host names? */
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+#if OPENSSL_VERSION_NUMBER < 0x10100000
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if (!(flags & NET_NOVALIDATECERT) &&
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(err = ssl_validate_cert (cert = SSL_get_peer_certificate (stream->con),
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host))) {
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@@ -275,6 +284,7 @@ static char *ssl_start_work (SSLSTREAM *
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sprintf (tmp,"*%.128s: %.255s",err,cert ? cert->name : "???");
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return ssl_last_error = cpystr (tmp);
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}
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+#endif
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return NIL;
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}
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@@ -313,6 +323,7 @@ static int ssl_open_verify (int ok,X509_
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* Returns: NIL if validated, else string of error message
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*/
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+#if OPENSSL_VERSION_NUMBER < 0x10100000
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static char *ssl_validate_cert (X509 *cert,char *host)
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{
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int i,n;
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@@ -342,6 +353,7 @@ static char *ssl_validate_cert (X509 *ce
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else ret = "Unable to locate common name in certificate";
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return ret;
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}
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+#endif
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/* Case-independent wildcard pattern match
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* Accepts: base string
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