diff options
Diffstat (limited to 'modules/md/md_http.c')
| -rw-r--r-- | modules/md/md_http.c | 397 |
1 files changed, 397 insertions, 0 deletions
diff --git a/modules/md/md_http.c b/modules/md/md_http.c new file mode 100644 index 0000000..0d21e7b --- /dev/null +++ b/modules/md/md_http.c @@ -0,0 +1,397 @@ +/* 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; +} |