| 1 | /* |
| 2 | * uhttpd - Tiny single-threaded httpd - TLS helper |
| 3 | * |
| 4 | * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org> |
| 5 | * |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | */ |
| 18 | |
| 19 | #include "uhttpd.h" |
| 20 | #include "uhttpd-tls.h" |
| 21 | #include "uhttpd-utils.h" |
| 22 | |
| 23 | |
| 24 | SSL_CTX * uh_tls_ctx_init() |
| 25 | { |
| 26 | SSL_CTX *c; |
| 27 | |
| 28 | SSL_load_error_strings(); |
| 29 | SSL_library_init(); |
| 30 | |
| 31 | if( (c = SSL_CTX_new(TLSv1_server_method())) != NULL ) |
| 32 | SSL_CTX_set_verify(c, SSL_VERIFY_NONE, NULL); |
| 33 | |
| 34 | return c; |
| 35 | } |
| 36 | |
| 37 | int uh_tls_ctx_cert(SSL_CTX *c, const char *file) |
| 38 | { |
| 39 | int rv; |
| 40 | |
| 41 | if( (rv = SSL_CTX_use_certificate_file(c, file, SSL_FILETYPE_PEM)) < 1 ) |
| 42 | rv = SSL_CTX_use_certificate_file(c, file, SSL_FILETYPE_ASN1); |
| 43 | |
| 44 | return rv; |
| 45 | } |
| 46 | |
| 47 | int uh_tls_ctx_key(SSL_CTX *c, const char *file) |
| 48 | { |
| 49 | int rv; |
| 50 | |
| 51 | if( (rv = SSL_CTX_use_PrivateKey_file(c, file, SSL_FILETYPE_PEM)) < 1 ) |
| 52 | rv = SSL_CTX_use_PrivateKey_file(c, file, SSL_FILETYPE_ASN1); |
| 53 | |
| 54 | return rv; |
| 55 | } |
| 56 | |
| 57 | void uh_tls_ctx_free(struct listener *l) |
| 58 | { |
| 59 | SSL_CTX_free(l->tls); |
| 60 | } |
| 61 | |
| 62 | |
| 63 | int uh_tls_client_accept(struct client *c) |
| 64 | { |
| 65 | int rv; |
| 66 | |
| 67 | if( c->server && c->server->tls ) |
| 68 | { |
| 69 | c->tls = SSL_new(c->server->tls); |
| 70 | if( c->tls ) |
| 71 | { |
| 72 | if( (rv = SSL_set_fd(c->tls, c->socket)) < 1 ) |
| 73 | goto cleanup; |
| 74 | if( (rv = SSL_accept(c->tls)) < 1 ) |
| 75 | goto cleanup; |
| 76 | } |
| 77 | else |
| 78 | rv = 0; |
| 79 | } |
| 80 | else |
| 81 | { |
| 82 | c->tls = NULL; |
| 83 | rv = 1; |
| 84 | } |
| 85 | |
| 86 | done: |
| 87 | return rv; |
| 88 | |
| 89 | cleanup: |
| 90 | SSL_free(c->tls); |
| 91 | c->tls = NULL; |
| 92 | goto done; |
| 93 | } |
| 94 | |
| 95 | int uh_tls_client_recv(struct client *c, void *buf, int len) |
| 96 | { |
| 97 | int rv = SSL_read(c->tls, buf, len); |
| 98 | return (rv > 0) ? rv : -1; |
| 99 | } |
| 100 | |
| 101 | int uh_tls_client_send(struct client *c, void *buf, int len) |
| 102 | { |
| 103 | int rv = SSL_write(c->tls, buf, len); |
| 104 | return (rv > 0) ? rv : -1; |
| 105 | } |
| 106 | |
| 107 | void uh_tls_client_close(struct client *c) |
| 108 | { |
| 109 | if( c->tls ) |
| 110 | { |
| 111 | SSL_shutdown(c->tls); |
| 112 | SSL_free(c->tls); |
| 113 | |
| 114 | c->tls = NULL; |
| 115 | } |
| 116 | } |
| 117 | |
