7 #include <sys/socket.h>
10 #include <http_parser.h>
14 static const char *TAG = "esp-tls";
19 #define ESP_LOGD(TAG, ...) //printf(__VA_ARGS__);
20 #define ESP_LOGE(TAG, ...) printf(__VA_ARGS__);
23 static struct addrinfo *resolve_host_name(const char *host, size_t hostlen)
25 struct addrinfo hints;
26 memset(&hints, 0, sizeof(hints));
27 hints.ai_family = AF_UNSPEC;
28 hints.ai_socktype = SOCK_STREAM;
30 char *use_host = strndup(host, hostlen);
35 ESP_LOGD(TAG, "host:%s: strlen %zu\n", use_host, hostlen);
37 if (getaddrinfo(use_host, NULL, &hints, &res)) {
38 ESP_LOGE(TAG, "couldn't get hostname for :%s:\n", use_host);
46 static ssize_t tcp_read(struct esp_tls *tls, char *data, size_t datalen)
48 return recv(tls->sockfd, data, datalen, 0);
51 static ssize_t tls_read(struct esp_tls *tls, char *data, size_t datalen)
53 ssize_t ret = SSL_read(tls->ssl, data, datalen);
55 int err = SSL_get_error(tls->ssl, ret);
56 if (err != SSL_ERROR_WANT_WRITE && err != SSL_ERROR_WANT_READ) {
57 ESP_LOGE(TAG, "read error :%d:\n", ret);
64 static int esp_tcp_connect(const char *host, int hostlen, int port)
66 struct addrinfo *res = resolve_host_name(host, hostlen);
71 int ret = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
78 if (res->ai_family == AF_INET) {
79 struct sockaddr_in *p = (struct sockaddr_in *)res->ai_addr;
80 p->sin_port = htons(port);
82 } else if (res->ai_family == AF_INET6) {
83 struct sockaddr_in6 *p = (struct sockaddr_in6 *)res->ai_addr;
84 p->sin6_port = htons(port);
85 p->sin6_family = AF_INET6;
88 /* Unsupported Protocol Family */
92 ret = connect(fd, addr_ptr, res->ai_addrlen);
107 static int create_ssl_handle(struct esp_tls *tls, const char *hostname, size_t hostlen, struct esp_tls_cfg *cfg)
111 SSL_CTX *ssl_ctx = SSL_CTX_new(TLSv1_2_client_method());
116 SSL_CTX_set_options(ssl_ctx, SSL_OP_ALL | SSL_OP_NO_SSLv2);
117 SSL_CTX_set_mode(ssl_ctx, SSL_MODE_AUTO_RETRY);
118 SSL_CTX_set_mode(ssl_ctx, SSL_MODE_RELEASE_BUFFERS);
121 if (cfg->cacert_pem_buf != NULL) {
122 SSL_CTX_set_verify(ssl_ctx, SSL_VERIFY_PEER, NULL);
125 bio = BIO_new(BIO_s_mem());
126 BIO_write(bio, cfg->cacert_pem_buf, cfg->cacert_pem_bytes);
128 X509 *ca = PEM_read_bio_X509(bio, NULL, 0, NULL);
131 ESP_LOGE(TAG, "CA Error\n");
133 ESP_LOGD(TAG, "CA OK\n");
135 X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx), ca);
141 if (cfg->alpn_protos) {
142 SSL_CTX_set_alpn_protos(ssl_ctx, cfg->alpn_protos, strlen((char *)cfg->alpn_protos));
144 SSL *ssl = SSL_new(ssl_ctx);
146 SSL_CTX_free(ssl_ctx);
150 char *use_host = strndup(hostname, hostlen);
152 SSL_CTX_free(ssl_ctx);
155 SSL_set_tlsext_host_name(ssl, use_host);
158 SSL_set_fd(ssl, tls->sockfd);
159 ret = SSL_connect(ssl);
161 ESP_LOGE(TAG, "SSL handshake failed");
163 SSL_CTX_free(ssl_ctx);
172 void esp_tls_conn_delete(struct esp_tls *tls)
181 SSL_CTX_free(tls->ctx);
189 static ssize_t tcp_write(struct esp_tls *tls, const char *data, size_t datalen)
191 return send(tls->sockfd, data, datalen, 0);
194 static ssize_t tls_write(struct esp_tls *tls, const char *data, size_t datalen)
196 ssize_t ret = SSL_write(tls->ssl, data, datalen);
198 int err = SSL_get_error(tls->ssl, ret);
199 if (err != SSL_ERROR_WANT_WRITE && err != SSL_ERROR_WANT_READ) {
200 ESP_LOGE(TAG, "write error :%d:\n", ret);
207 struct esp_tls *esp_tls_conn_new(const char *hostname, int hostlen, int port, struct esp_tls_cfg *cfg)
209 int sockfd = esp_tcp_connect(hostname, hostlen, port);
214 struct esp_tls *tls = (struct esp_tls *)calloc(1, sizeof(struct esp_tls));
219 tls->sockfd = sockfd;
220 tls->read = tcp_read;
221 tls->write = tcp_write;
224 if (create_ssl_handle(tls, hostname, hostlen, cfg) != 0) {
225 esp_tls_conn_delete(tls);
228 tls->read = tls_read;
229 tls->write = tls_write;
234 static int get_port(const char *url, struct http_parser_url *u)
236 if (u->field_data[UF_PORT].len) {
237 return strtol(&url[u->field_data[UF_PORT].off], NULL, 10);
239 if (strncmp(&url[u->field_data[UF_SCHEMA].off], "http", u->field_data[UF_SCHEMA].len) == 0) {
241 } else if (strncmp(&url[u->field_data[UF_SCHEMA].off], "https", u->field_data[UF_SCHEMA].len) == 0) {
248 struct esp_tls *esp_tls_conn_http_new(const char *url, struct esp_tls_cfg *cfg)
251 struct http_parser_url u;
252 http_parser_url_init(&u);
253 http_parser_parse_url(url, strlen(url), 0, &u);
255 /* Connect to host */
256 return esp_tls_conn_new(&url[u.field_data[UF_HOST].off], u.field_data[UF_HOST].len,
257 get_port(url, &u), cfg);