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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#include "swissknife_lease_curl.h" |
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#include <unistd.h> |
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#include "crypto/hash.h" |
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#include "gateway_util.h" |
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#include "json_document.h" |
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#include "json_document_write.h" |
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#include "ssl.h" |
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#include "util/logging.h" |
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#include "util/pointer.h" |
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#include "util/posix.h" |
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#include "util/string.h" |
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long g_final_revision = -1; |
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namespace { |
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CURL *PrepareCurl(const std::string &method) { |
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const char *user_agent_string = "cvmfs/" CVMFS_VERSION; |
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CURL *h_curl = curl_easy_init(); |
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if (h_curl) { |
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curl_easy_setopt(h_curl, CURLOPT_NOPROGRESS, 1L); |
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curl_easy_setopt(h_curl, CURLOPT_USERAGENT, user_agent_string); |
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curl_easy_setopt(h_curl, CURLOPT_MAXREDIRS, 50L); |
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curl_easy_setopt(h_curl, CURLOPT_CUSTOMREQUEST, method.c_str()); |
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} |
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return h_curl; |
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} |
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size_t RecvCB(void *buffer, size_t size, size_t nmemb, void *userp) { |
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CurlBuffer *my_buffer = static_cast<CurlBuffer *>(userp); |
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if (size * nmemb < 1) { |
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return 0; |
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} |
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my_buffer->data = my_buffer->data |
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+ std::string(static_cast<char *>(buffer), nmemb); |
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return nmemb; |
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} |
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} // namespace |
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bool MakeAcquireRequest(const std::string &key_id, const std::string &secret, |
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const std::string &repo_path, |
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const std::string &repo_service_url, CurlBuffer *buffer, |
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const std::string &metadata) { |
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CURLcode ret = static_cast<CURLcode>(0); |
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CURL *h_curl = PrepareCurl("POST"); |
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if (!h_curl) { |
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return false; |
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} |
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JsonStringGenerator payloadJson; |
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payloadJson.Add("path", repo_path); |
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payloadJson.Add("api_version", StringifyInt(gateway::APIVersion())); |
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payloadJson.Add("hostname", GetHostname()); |
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if (!metadata.empty()) { |
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payloadJson.AddJsonObject("metadata", metadata); |
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} |
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const std::string payload = payloadJson.GenerateString(); |
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shash::Any hmac(shash::kSha1); |
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shash::HmacString(secret, payload, &hmac); |
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SslCertificateStore cs; |
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cs.UseSystemCertificatePath(); |
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cs.ApplySslCertificatePath(h_curl); |
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const std::string header_str = std::string("Authorization: ") + key_id + " " |
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+ Base64(hmac.ToString(false)); |
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struct curl_slist *auth_header = NULL; |
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auth_header = curl_slist_append(auth_header, header_str.c_str()); |
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curl_easy_setopt(h_curl, CURLOPT_HTTPHEADER, auth_header); |
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// Make request to acquire lease from repo services |
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curl_easy_setopt(h_curl, CURLOPT_URL, (repo_service_url + "/leases").c_str()); |
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curl_easy_setopt(h_curl, CURLOPT_POSTFIELDSIZE_LARGE, |
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static_cast<curl_off_t>(payload.length())); |
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curl_easy_setopt(h_curl, CURLOPT_POSTFIELDS, payload.c_str()); |
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curl_easy_setopt(h_curl, CURLOPT_WRITEFUNCTION, RecvCB); |
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curl_easy_setopt(h_curl, CURLOPT_WRITEDATA, buffer); |
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ret = curl_easy_perform(h_curl); |
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if (ret) { |
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LogCvmfs(kLogUploadGateway, kLogStderr, |
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"Make lease acquire request failed: %d. Reply: %s", ret, |
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buffer->data.c_str()); |
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} |
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curl_easy_cleanup(h_curl); |
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h_curl = NULL; |
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return !ret; |
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} |
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bool MakeEndRequest(const std::string &method, const std::string &key_id, |
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const std::string &secret, const std::string &session_token, |
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const std::string &repo_service_url, |
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const std::string &request_payload, CurlBuffer *reply, |
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bool expect_final_revision) { |
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CURLcode ret = static_cast<CURLcode>(0); |
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CURL *h_curl = PrepareCurl(method); |
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if (!h_curl) { |
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return false; |
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} |
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shash::Any hmac(shash::kSha1); |
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shash::HmacString(secret, session_token, &hmac); |
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SslCertificateStore cs; |
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cs.UseSystemCertificatePath(); |
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cs.ApplySslCertificatePath(h_curl); |
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const std::string header_str = std::string("Authorization: ") + key_id + " " |
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+ Base64(hmac.ToString(false)); |
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struct curl_slist *auth_header = NULL; |
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auth_header = curl_slist_append(auth_header, header_str.c_str()); |
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curl_easy_setopt(h_curl, CURLOPT_HTTPHEADER, auth_header); |
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curl_easy_setopt(h_curl, CURLOPT_URL, |
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(repo_service_url + "/leases/" + session_token).c_str()); |
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if (request_payload != "") { |
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curl_easy_setopt(h_curl, CURLOPT_POSTFIELDSIZE_LARGE, |
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static_cast<curl_off_t>(request_payload.length())); |
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curl_easy_setopt(h_curl, CURLOPT_POSTFIELDS, request_payload.c_str()); |
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} else { |
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curl_easy_setopt(h_curl, CURLOPT_POSTFIELDSIZE_LARGE, |
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static_cast<curl_off_t>(0)); |
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curl_easy_setopt(h_curl, CURLOPT_POSTFIELDS, NULL); |
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} |
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curl_easy_setopt(h_curl, CURLOPT_WRITEFUNCTION, RecvCB); |
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curl_easy_setopt(h_curl, CURLOPT_WRITEDATA, reply); |
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ret = curl_easy_perform(h_curl); |
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if (ret) { |
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LogCvmfs(kLogUploadGateway, kLogStderr, |
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"Lease end request - curl_easy_perform failed: %d", ret); |
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} |
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JsonDocument *doc = JsonDocument::Create(reply->data); |
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bool ok = true; |
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if (!doc) { |
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ok = false; |
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} else { |
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UniquePtr<JsonDocument> const reply_json(doc); |
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const JSON *reply_status = JsonDocument::SearchInObject( |
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reply_json->root(), "status", JSON_STRING); |
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ok = (reply_status != NULL |
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&& std::string(reply_status->string_value) == "ok"); |
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if (!ok) { |
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LogCvmfs(kLogUploadGateway, kLogStderr, |
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"Lease end request - error reply: %s", reply->data.c_str()); |
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} |
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if (expect_final_revision) { |
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const JSON *reply_final_rev = JsonDocument::SearchInObject( |
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reply_json->root(), "final_revision", JSON_INT); |
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ok = (reply_final_rev != NULL); |
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if (ok) { |
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g_final_revision = reply_final_rev->int_value; |
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} else { |
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g_final_revision = -1; |
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} |
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} |
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} |
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curl_easy_cleanup(h_curl); |
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h_curl = NULL; |
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return ok && !ret; |
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} |
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