feat: TLS-ALPN wrappers for OpenSSL (nim-lang#19202)

Co-authored-by: Iced Quinn <icedquinn@iceworks.cc>
PMunch · Mar 28, 2022 · daefb09 · daefb09
1 parent 06a356c
commit daefb09
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/lib/wrappers/openssl.nim b/lib/wrappers/openssl.nim
@@ -847,3 +847,17 @@ when not defined(nimDisableCertificateValidation) and not defined(windows):
     let cert = d2i_X509(certbytes)
     let encoded = cert.i2d_X509()
     assert encoded == certbytes
+
+# Application Layer Protocol Negociation extension (TLS-ALPN, RFC7301)
+# Available in at least OpenSSL 1.1.1 and later, not sure if earlier
+# --Iced Quinn
+
+proc SSL_CTX_set_alpn_protos*(ctx: SslCtx; protos: cstring; protos_len: cuint): cint {.cdecl, dynlib: DLLSSLName, importc.}
+proc SSL_set_alpn_protos*(ssl: SslPtr; protos: cstring; protos_len: cuint): cint {.cdecl, dynlib: DLLSSLName, importc.}
+proc SSL_CTX_set_alpn_select_cb*(ctx: SslCtx; cb: proc(ssl: SslPtr; out_proto: ptr cstring; outlen: cstring; in_proto: cstring; inlen: cuint; arg: pointer): cint {.cdecl.}; arg: pointer): cint {.cdecl, dynlib: DLLSSLName, importc.}
+proc SSL_get0_alpn_selected*(ssl: SslPtr; data: ptr cstring; len: ptr cuint) {.cdecl, dynlib: DLLSSLName, importc.}
+proc SSL_CTX_set_next_protos_advertised_cb*(ctx: SslCtx; cb: proc(ssl: SslPtr; out_proto: ptr cstring; outlen: ptr cuint; arg: pointer): cint {.cdecl.}; arg: pointer) {.cdecl, dynlib: DLLSSLName, importc.}
+proc SSL_CTX_set_next_proto_select_cb*(ctx: SslCtx; cb: proc(s: SslPtr; out_proto: cstring; outlen: cstring; in_proto: cstring; inlen: cuint; arg: pointer): cint {.cdecl.}; arg: pointer) {.cdecl, dynlib: DLLSSLName, importc.}
+proc SSL_select_next_proto*(out_proto: ptr cstring; outlen: cstring; server: cstring; server_len: cuint; client: cstring; client_len: cuint): cint {.cdecl, dynlib: DLLSSLName, importc.}
+proc SSL_get0_next_proto_negotiated*(s: SslPtr; data: ptr cstring; len: ptr cuint) {.cdecl, dynlib: DLLSSLName, importc.}
+