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-rw-r--r--modules/md/md_http.c397
1 files changed, 397 insertions, 0 deletions
diff --git a/modules/md/md_http.c b/modules/md/md_http.c
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+++ b/modules/md/md_http.c
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <assert.h>
+
+#include <apr_lib.h>
+#include <apr_strings.h>
+#include <apr_buckets.h>
+
+#include "md_http.h"
+#include "md_log.h"
+#include "md_util.h"
+
+struct md_http_t {
+ apr_pool_t *pool;
+ apr_bucket_alloc_t *bucket_alloc;
+ int next_id;
+ apr_off_t resp_limit;
+ md_http_impl_t *impl;
+ void *impl_data; /* to be used by the implementation */
+ const char *user_agent;
+ const char *proxy_url;
+ const char *unix_socket_path;
+ md_http_timeouts_t timeout;
+ const char *ca_file;
+};
+
+static md_http_impl_t *cur_impl;
+static int cur_init_done;
+
+void md_http_use_implementation(md_http_impl_t *impl)
+{
+ if (cur_impl != impl) {
+ cur_impl = impl;
+ cur_init_done = 0;
+ }
+}
+
+static apr_status_t http_cleanup(void *data)
+{
+ md_http_t *http = data;
+ if (http && http->impl && http->impl->cleanup) {
+ http->impl->cleanup(http, http->pool);
+ }
+ return APR_SUCCESS;
+}
+
+apr_status_t md_http_create(md_http_t **phttp, apr_pool_t *p, const char *user_agent,
+ const char *proxy_url)
+{
+ md_http_t *http;
+ apr_status_t rv = APR_SUCCESS;
+
+ if (!cur_impl) {
+ *phttp = NULL;
+ return APR_ENOTIMPL;
+ }
+
+ if (!cur_init_done) {
+ if (APR_SUCCESS == (rv = cur_impl->init())) {
+ cur_init_done = 1;
+ }
+ else {
+ return rv;
+ }
+ }
+
+ http = apr_pcalloc(p, sizeof(*http));
+ http->pool = p;
+ http->impl = cur_impl;
+ http->user_agent = apr_pstrdup(p, user_agent);
+ http->proxy_url = proxy_url? apr_pstrdup(p, proxy_url) : NULL;
+ http->bucket_alloc = apr_bucket_alloc_create(p);
+ if (!http->bucket_alloc) {
+ return APR_EGENERAL;
+ }
+ apr_pool_cleanup_register(p, http, http_cleanup, apr_pool_cleanup_null);
+ *phttp = http;
+ return APR_SUCCESS;
+}
+
+apr_status_t md_http_clone(md_http_t **phttp,
+ apr_pool_t *p, md_http_t *source_http)
+{
+ apr_status_t rv;
+
+ rv = md_http_create(phttp, p, source_http->user_agent, source_http->proxy_url);
+ if (APR_SUCCESS == rv) {
+ (*phttp)->resp_limit = source_http->resp_limit;
+ (*phttp)->timeout = source_http->timeout;
+ if (source_http->unix_socket_path) {
+ (*phttp)->unix_socket_path = apr_pstrdup(p, source_http->unix_socket_path);
+ }
+ if (source_http->ca_file) {
+ (*phttp)->ca_file = apr_pstrdup(p, source_http->ca_file);
+ }
+ }
+ return rv;
+}
+
+void md_http_set_impl_data(md_http_t *http, void *data)
+{
+ http->impl_data = data;
+}
+
+void *md_http_get_impl_data(md_http_t *http)
+{
+ return http->impl_data;
+}
+
+void md_http_set_response_limit(md_http_t *http, apr_off_t resp_limit)
+{
+ http->resp_limit = resp_limit;
+}
+
+void md_http_set_timeout_default(md_http_t *http, apr_time_t timeout)
+{
+ http->timeout.overall = timeout;
+}
+
+void md_http_set_timeout(md_http_request_t *req, apr_time_t timeout)
+{
+ req->timeout.overall = timeout;
+}
+
+void md_http_set_connect_timeout_default(md_http_t *http, apr_time_t timeout)
+{
+ http->timeout.connect = timeout;
+}
+
+void md_http_set_connect_timeout(md_http_request_t *req, apr_time_t timeout)
+{
+ req->timeout.connect = timeout;
+}
+
+void md_http_set_stalling_default(md_http_t *http, long bytes_per_sec, apr_time_t timeout)
+{
+ http->timeout.stall_bytes_per_sec = bytes_per_sec;
+ http->timeout.stalled = timeout;
+}
+
+void md_http_set_stalling(md_http_request_t *req, long bytes_per_sec, apr_time_t timeout)
+{
+ req->timeout.stall_bytes_per_sec = bytes_per_sec;
+ req->timeout.stalled = timeout;
+}
+
+void md_http_set_ca_file(md_http_t *http, const char *ca_file)
+{
+ http->ca_file = ca_file;
+}
+
+void md_http_set_unix_socket_path(md_http_t *http, const char *path)
+{
+ http->unix_socket_path = path;
+}
+
+static apr_status_t req_set_body(md_http_request_t *req, const char *content_type,
+ apr_bucket_brigade *body, apr_off_t body_len,
+ int detect_len)
+{
+ apr_status_t rv = APR_SUCCESS;
+
+ if (body && detect_len) {
+ rv = apr_brigade_length(body, 1, &body_len);
+ if (rv != APR_SUCCESS) {
+ return rv;
+ }
+ }
+
+ req->body = body;
+ req->body_len = body? body_len : 0;
+ if (content_type) {
+ apr_table_set(req->headers, "Content-Type", content_type);
+ }
+ else {
+ apr_table_unset(req->headers, "Content-Type");
+ }
+ return rv;
+}
+
+static apr_status_t req_set_body_data(md_http_request_t *req, const char *content_type,
+ const md_data_t *body)
+{
+ apr_bucket_brigade *bbody = NULL;
+ apr_status_t rv;
+
+ if (body && body->len > 0) {
+ bbody = apr_brigade_create(req->pool, req->http->bucket_alloc);
+ rv = apr_brigade_write(bbody, NULL, NULL, body->data, body->len);
+ if (rv != APR_SUCCESS) {
+ return rv;
+ }
+ }
+ return req_set_body(req, content_type, bbody, body? (apr_off_t)body->len : 0, 0);
+}
+
+static apr_status_t req_create(md_http_request_t **preq, md_http_t *http,
+ const char *method, const char *url,
+ struct apr_table_t *headers)
+{
+ md_http_request_t *req;
+ apr_pool_t *pool;
+ apr_status_t rv;
+
+ rv = apr_pool_create(&pool, http->pool);
+ if (rv != APR_SUCCESS) {
+ return rv;
+ }
+ apr_pool_tag(pool, "md_http_req");
+
+ req = apr_pcalloc(pool, sizeof(*req));
+ req->pool = pool;
+ req->id = http->next_id++;
+ req->bucket_alloc = http->bucket_alloc;
+ req->http = http;
+ req->method = method;
+ req->url = url;
+ req->headers = headers? apr_table_copy(req->pool, headers) : apr_table_make(req->pool, 5);
+ req->resp_limit = http->resp_limit;
+ req->user_agent = http->user_agent;
+ req->proxy_url = http->proxy_url;
+ req->timeout = http->timeout;
+ req->ca_file = http->ca_file;
+ req->unix_socket_path = http->unix_socket_path;
+ *preq = req;
+ return rv;
+}
+
+void md_http_req_destroy(md_http_request_t *req)
+{
+ if (req->internals) {
+ req->http->impl->req_cleanup(req);
+ req->internals = NULL;
+ }
+ apr_pool_destroy(req->pool);
+}
+
+void md_http_set_on_status_cb(md_http_request_t *req, md_http_status_cb *cb, void *baton)
+{
+ req->cb.on_status = cb;
+ req->cb.on_status_data = baton;
+}
+
+void md_http_set_on_response_cb(md_http_request_t *req, md_http_response_cb *cb, void *baton)
+{
+ req->cb.on_response = cb;
+ req->cb.on_response_data = baton;
+}
+
+apr_status_t md_http_perform(md_http_request_t *req)
+{
+ return req->http->impl->perform(req);
+}
+
+typedef struct {
+ md_http_next_req *nextreq;
+ void *baton;
+} nextreq_proxy_t;
+
+static apr_status_t proxy_nextreq(md_http_request_t **preq, void *baton,
+ md_http_t *http, int in_flight)
+{
+ nextreq_proxy_t *proxy = baton;
+
+ return proxy->nextreq(preq, proxy->baton, http, in_flight);
+}
+
+apr_status_t md_http_multi_perform(md_http_t *http, md_http_next_req *nextreq, void *baton)
+{
+ nextreq_proxy_t proxy;
+
+ proxy.nextreq = nextreq;
+ proxy.baton = baton;
+ return http->impl->multi_perform(http, http->pool, proxy_nextreq, &proxy);
+}
+
+apr_status_t md_http_GET_create(md_http_request_t **preq, md_http_t *http, const char *url,
+ struct apr_table_t *headers)
+{
+ md_http_request_t *req;
+ apr_status_t rv;
+
+ rv = req_create(&req, http, "GET", url, headers);
+ *preq = (APR_SUCCESS == rv)? req : NULL;
+ return rv;
+}
+
+apr_status_t md_http_HEAD_create(md_http_request_t **preq, md_http_t *http, const char *url,
+ struct apr_table_t *headers)
+{
+ md_http_request_t *req;
+ apr_status_t rv;
+
+ rv = req_create(&req, http, "HEAD", url, headers);
+ *preq = (APR_SUCCESS == rv)? req : NULL;
+ return rv;
+}
+
+apr_status_t md_http_POST_create(md_http_request_t **preq, md_http_t *http, const char *url,
+ struct apr_table_t *headers, const char *content_type,
+ struct apr_bucket_brigade *body, int detect_len)
+{
+ md_http_request_t *req;
+ apr_status_t rv;
+
+ rv = req_create(&req, http, "POST", url, headers);
+ if (APR_SUCCESS == rv) {
+ rv = req_set_body(req, content_type, body, -1, detect_len);
+ }
+ *preq = (APR_SUCCESS == rv)? req : NULL;
+ return rv;
+}
+
+apr_status_t md_http_POSTd_create(md_http_request_t **preq, md_http_t *http, const char *url,
+ struct apr_table_t *headers, const char *content_type,
+ const struct md_data_t *body)
+{
+ md_http_request_t *req;
+ apr_status_t rv;
+
+ rv = req_create(&req, http, "POST", url, headers);
+ if (APR_SUCCESS != rv) goto cleanup;
+ rv = req_set_body_data(req, content_type, body);
+cleanup:
+ if (APR_SUCCESS == rv) {
+ *preq = req;
+ }
+ else {
+ *preq = NULL;
+ if (req) md_http_req_destroy(req);
+ }
+ return rv;
+}
+
+apr_status_t md_http_GET_perform(struct md_http_t *http,
+ const char *url, struct apr_table_t *headers,
+ md_http_response_cb *cb, void *baton)
+{
+ md_http_request_t *req;
+ apr_status_t rv;
+
+ rv = md_http_GET_create(&req, http, url, headers);
+ if (APR_SUCCESS == rv) md_http_set_on_response_cb(req, cb, baton);
+ return (APR_SUCCESS == rv)? md_http_perform(req) : rv;
+}
+
+apr_status_t md_http_HEAD_perform(struct md_http_t *http,
+ const char *url, struct apr_table_t *headers,
+ md_http_response_cb *cb, void *baton)
+{
+ md_http_request_t *req;
+ apr_status_t rv;
+
+ rv = md_http_HEAD_create(&req, http, url, headers);
+ if (APR_SUCCESS == rv) md_http_set_on_response_cb(req, cb, baton);
+ return (APR_SUCCESS == rv)? md_http_perform(req) : rv;
+}
+
+apr_status_t md_http_POST_perform(struct md_http_t *http, const char *url,
+ struct apr_table_t *headers, const char *content_type,
+ apr_bucket_brigade *body, int detect_len,
+ md_http_response_cb *cb, void *baton)
+{
+ md_http_request_t *req;
+ apr_status_t rv;
+
+ rv = md_http_POST_create(&req, http, url, headers, content_type, body, detect_len);
+ if (APR_SUCCESS == rv) md_http_set_on_response_cb(req, cb, baton);
+ return (APR_SUCCESS == rv)? md_http_perform(req) : rv;
+}
+
+apr_status_t md_http_POSTd_perform(md_http_t *http, const char *url,
+ struct apr_table_t *headers, const char *content_type,
+ const md_data_t *body,
+ md_http_response_cb *cb, void *baton)
+{
+ md_http_request_t *req;
+ apr_status_t rv;
+
+ rv = md_http_POSTd_create(&req, http, url, headers, content_type, body);
+ if (APR_SUCCESS == rv) md_http_set_on_response_cb(req, cb, baton);
+ return (APR_SUCCESS == rv)? md_http_perform(req) : rv;
+}