GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/session_context.cc
Date: 2025-08-31 02:39:21
Exec Total Coverage
Lines: 139 224 62.1%
Branches: 80 300 26.7%
Line Branch Exec Source
1 /**
2 * This file is part of the CernVM File System.
3 */
4
5 #include "session_context.h"
6
7 #include <algorithm>
8 #include <limits>
9
10 #include "curl/curl.h"
11 #include "gateway_util.h"
12 #include "json_document.h"
13 #include "json_document_write.h"
14 #include "swissknife_lease_curl.h"
15 #include "util/exception.h"
16 #include "util/pointer.h"
17 #include "util/string.h"
18
19 namespace {
20 // Maximum number of jobs during a session. No limit, for practical
21 // purposes. Note that we use uint32_t so that the Tube code works
22 // correctly with this limit on 32bit systems.
23 const uint32_t kMaxNumJobs = std::numeric_limits<uint32_t>::max();
24 } // namespace
25
26 namespace upload {
27
28 24 size_t SendCB(void *ptr, size_t size, size_t nmemb, void *userp) {
29 24 CurlSendPayload *payload = static_cast<CurlSendPayload *>(userp);
30
31 24 const size_t max_chunk_size = size * nmemb;
32
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 24 if (max_chunk_size < 1) {
33 ✗ return 0;
34 }
35
36 24 size_t current_chunk_size = 0;
37
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 48 while (current_chunk_size < max_chunk_size) {
38
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 32 if (payload->index < payload->json_message->size()) {
39 // Can add a chunk from the JSON message
40 4 const size_t read_size = std::min(
41 8 max_chunk_size - current_chunk_size,
42 4 payload->json_message->size() - payload->index);
43 4 current_chunk_size += read_size;
44 4 std::memcpy(ptr, payload->json_message->data() + payload->index,
45 read_size);
46 4 payload->index += read_size;
47 } else {
48 // Can add a chunk from the payload
49 28 const size_t max_read_size = max_chunk_size - current_chunk_size;
50 28 const unsigned nbytes = payload->pack_serializer->ProduceNext(
51 max_read_size,
52 static_cast<unsigned char *>(ptr) + current_chunk_size);
53 28 current_chunk_size += nbytes;
54
55
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 28 if (!nbytes) {
56 8 break;
57 }
58 }
59 }
60
61 24 return current_chunk_size;
62 }
63
64 ✗ size_t RecvCB(void *buffer, size_t size, size_t nmemb, void *userp) {
65 ✗ std::string *my_buffer = static_cast<std::string *>(userp);
66
67 ✗ if (size * nmemb < 1) {
68 ✗ return 0;
69 }
70
71 ✗ *my_buffer = static_cast<char *>(buffer);
72
73 ✗ return my_buffer->size();
74 }
75
76 76 SessionContextBase::SessionContextBase()
77 76 : upload_results_(kMaxNumJobs)
78 76 , api_url_()
79 76 , session_token_()
80 76 , key_id_()
81 76 , secret_()
82 76 , max_pack_size_(ObjectPack::kDefaultLimit)
83 76 , active_handles_()
84 76 , current_pack_(NULL)
85 76 , current_pack_mtx_()
86 76 , bytes_committed_(0)
87 76 , bytes_dispatched_(0)
88 76 , initialized_(false) { }
89
90 152 SessionContextBase::~SessionContextBase() { }
91
92 76 bool SessionContextBase::Initialize(const std::string &api_url,
93 const std::string &session_token,
94 const std::string &key_id,
95 const std::string &secret,
96 uint64_t max_pack_size,
97 uint64_t max_queue_size) {
98 76 bool ret = true;
99
100 // Initialize session context lock
101 pthread_mutexattr_t attr;
102 76 if (pthread_mutexattr_init(&attr)
103
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 76 || pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE)
104
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 76 || pthread_mutex_init(&current_pack_mtx_, &attr)
105
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 152 || pthread_mutexattr_destroy(&attr)) {
106 ✗ LogCvmfs(kLogUploadGateway, kLogStderr,
107 "Could not initialize SessionContext lock.");
108 ✗ return false;
109 }
110
111 // Set upstream URL and session token
112
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 76 api_url_ = api_url;
113
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 76 session_token_ = session_token;
114
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 76 key_id_ = key_id;
115
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 76 secret_ = secret;
116 76 max_pack_size_ = max_pack_size;
117
118 76 bytes_committed_ = 0u;
119 76 bytes_dispatched_ = 0u;
120
121
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 76 assert(upload_results_.IsEmpty());
122
123 // Ensure that there are not open object packs
124
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 76 if (current_pack_) {
125 ✗ LogCvmfs(
126 kLogUploadGateway, kLogStderr,
127 "Could not initialize SessionContext - Existing open object packs.");
128 ✗ ret = false;
129 }
130
131
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 76 ret = InitializeDerived(max_queue_size) && ret;
132
133 76 initialized_ = true;
134
135 76 return ret;
136 }
137
138 76 bool SessionContextBase::Finalize(bool commit, const std::string &old_root_hash,
139 const std::string &new_root_hash,
140 const RepositoryTag &tag) {
141
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 76 assert(active_handles_.empty());
142
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 76 if (!initialized_) {
143 ✗ assert(!commit);
144 ✗ return true;
145 }
146
147 {
148 76 const MutexLockGuard lock(current_pack_mtx_);
149
150
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 76 if (current_pack_ && current_pack_->GetNoObjects() > 0) {
151
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 16 Dispatch();
152 16 current_pack_ = NULL;
153 }
154 76 }
155
156 76 bool results = true;
157
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 200 while (!upload_results_.IsEmpty()) {
158 124 Future<bool> *future = upload_results_.PopBack();
159
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 124 results = future->Get() && results;
160
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 124 delete future;
161 }
162
163
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 76 if (commit) {
164
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 28 if (old_root_hash.empty() || new_root_hash.empty()) {
165 ✗ return false;
166 }
167 28 const bool commit_result = Commit(old_root_hash, new_root_hash, tag);
168
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 28 if (!commit_result) {
169 ✗ LogCvmfs(kLogUploadGateway, kLogStderr,
170 "SessionContext: could not commit session. Aborting.");
171 ✗ FinalizeDerived();
172 ✗ pthread_mutex_destroy(&current_pack_mtx_);
173 ✗ initialized_ = false;
174 ✗ return false;
175 }
176 }
177
178
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 76 results &= FinalizeDerived() && (bytes_committed_ == bytes_dispatched_);
179
180 76 pthread_mutex_destroy(&current_pack_mtx_);
181
182 76 initialized_ = false;
183
184 76 return results;
185 }
186
187 208 ObjectPack::BucketHandle SessionContextBase::NewBucket() {
188 208 const MutexLockGuard lock(current_pack_mtx_);
189
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 208 if (!current_pack_) {
190
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 64 current_pack_ = new ObjectPack(max_pack_size_);
191 }
192
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 208 ObjectPack::BucketHandle hd = current_pack_->NewBucket();
193
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 208 active_handles_.push_back(hd);
194 208 return hd;
195 208 }
196
197 272 bool SessionContextBase::CommitBucket(const ObjectPack::BucketContentType type,
198 const shash::Any &id,
199 const ObjectPack::BucketHandle handle,
200 const std::string &name,
201 const bool force_dispatch) {
202 272 const MutexLockGuard lock(current_pack_mtx_);
203
204
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 272 if (!current_pack_) {
205 ✗ LogCvmfs(kLogUploadGateway, kLogStderr,
206 "Error: Called SessionBaseContext::CommitBucket without an open "
207 "ObjectPack.");
208 ✗ return false;
209 }
210
211 272 const uint64_t size0 = current_pack_->size();
212
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 272 const bool committed = current_pack_->CommitBucket(type, id, handle, name);
213
214
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 272 if (committed) { // Current pack is still not full
215
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 416 active_handles_.erase(
216
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 208 std::remove(active_handles_.begin(), active_handles_.end(), handle),
217 208 active_handles_.end());
218 208 const uint64_t size1 = current_pack_->size();
219 208 bytes_committed_ += size1 - size0;
220
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 208 if (force_dispatch) {
221
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 48 Dispatch();
222 48 current_pack_ = NULL;
223 }
224 } else { // Current pack is full and can be dispatched
225 64 uint64_t new_size = 0;
226
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 64 if (handle->capacity > max_pack_size_) {
227 4 new_size = handle->capacity + 1;
228 } else {
229 60 new_size = max_pack_size_;
230 }
231
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 64 ObjectPack *new_pack = new ObjectPack(new_size);
232
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 152 for (size_t i = 0u; i < active_handles_.size(); ++i) {
233
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 88 current_pack_->TransferBucket(active_handles_[i], new_pack);
234 }
235
236
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 64 if (current_pack_->GetNoObjects() > 0) {
237
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 60 Dispatch();
238 }
239 64 current_pack_ = new_pack;
240
241
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 64 CommitBucket(type, id, handle, name, false);
242 }
243
244 272 return true;
245 272 }
246
247 124 void SessionContextBase::Dispatch() {
248 124 const MutexLockGuard lock(current_pack_mtx_);
249
250
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 124 if (!current_pack_) {
251 ✗ return;
252 }
253
254 124 bytes_dispatched_ += current_pack_->size();
255
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 124 upload_results_.EnqueueFront(DispatchObjectPack(current_pack_));
256
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 124 }
257
258 76 SessionContext::SessionContext()
259
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 76 : SessionContextBase(), upload_jobs_(), worker_() { }
260
261 76 bool SessionContext::InitializeDerived(uint64_t max_queue_size) {
262 // Start worker thread
263
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 76 upload_jobs_ = new Tube<UploadJob>(max_queue_size);
264
265 76 const int retval = pthread_create(&worker_, NULL, UploadLoop,
266 reinterpret_cast<void *>(this));
267
268 76 return !retval;
269 }
270
271 76 bool SessionContext::FinalizeDerived() {
272 // Note: in FinalizedDerived, we know that the worker is running. The
273 // SessionContext is called only from GatewayUploader::FinalizeSession(),
274 // which in turn is from Spooler::FinalizeSession(). The Spooler ensures
275 // that GatewayUploader::Initialize() is called on construction.
276 //
277 // TODO(jblomer): Refactor SessionContext (and Uploader*) classes to
278 // use a factory method for construction.
279 //
280 76 upload_jobs_->EnqueueFront(&terminator_);
281 76 pthread_join(worker_, NULL);
282
283 76 return true;
284 }
285
286 ✗ bool SessionContext::Commit(const std::string &old_root_hash,
287 const std::string &new_root_hash,
288 const RepositoryTag &tag) {
289 ✗ JsonStringGenerator request_input;
290 ✗ request_input.Add("old_root_hash", old_root_hash);
291 ✗ request_input.Add("new_root_hash", new_root_hash);
292 ✗ request_input.Add("tag_name", tag.name());
293 // Channels are no longer supported: send 0 (i.e. kChannelTrunk) for
294 // backwards compatibility with existing gateways
295 //
296 ✗ request_input.Add("tag_channel", 0);
297 ✗ request_input.Add("tag_description", tag.description());
298 ✗ const std::string request = request_input.GenerateString();
299 ✗ CurlBuffer buffer;
300 ✗ return MakeEndRequest("POST", key_id_, secret_, session_token_, api_url_,
301 ✗ request, &buffer);
302 }
303
304 124 Future<bool> *SessionContext::DispatchObjectPack(ObjectPack *pack) {
305 124 UploadJob *job = new UploadJob;
306 124 Future<bool> *result = new Future<bool>();
307 124 job->pack = pack;
308 124 job->result = result;
309 124 upload_jobs_->EnqueueFront(job);
310 124 return result;
311 }
312
313 ✗ bool SessionContext::DoUpload(const SessionContext::UploadJob *job) {
314 // Set up the object pack serializer
315 ✗ ObjectPackProducer serializer(job->pack);
316
317 ✗ shash::Any payload_digest(shash::kSha1);
318 ✗ serializer.GetDigest(&payload_digest);
319 ✗ const std::string json_msg = "{\"session_token\" : \"" + session_token_
320 ✗ + "\", \"payload_digest\" : \""
321 ✗ + payload_digest.ToString(false)
322 ✗ + "\", \"header_size\" : \""
323 ✗ + StringifyInt(serializer.GetHeaderSize())
324 ✗ + "\", \"api_version\" : \""
325 ✗ + StringifyInt(gateway::APIVersion()) + "\"}";
326
327 // Compute HMAC
328 ✗ shash::Any hmac(shash::kSha1);
329 ✗ shash::HmacString(secret_, json_msg, &hmac);
330
331 CurlSendPayload payload;
332 ✗ payload.json_message = &json_msg;
333 ✗ payload.pack_serializer = &serializer;
334 ✗ payload.index = 0;
335
336 ✗ const size_t payload_size = json_msg.size() + serializer.GetHeaderSize()
337 ✗ + job->pack->size();
338
339 // Prepare the Curl POST request
340 ✗ CURL *h_curl = curl_easy_init();
341
342 ✗ if (!h_curl) {
343 ✗ return false;
344 }
345
346 // Set HTTP headers (Authorization and Message-Size)
347 ✗ std::string header_str = std::string("Authorization: ") + key_id_ + " "
348 ✗ + Base64(hmac.ToString(false));
349 ✗ struct curl_slist *auth_header = NULL;
350 ✗ auth_header = curl_slist_append(auth_header, header_str.c_str());
351 ✗ header_str = std::string("Message-Size: ") + StringifyInt(json_msg.size());
352 ✗ auth_header = curl_slist_append(auth_header, header_str.c_str());
353 ✗ curl_easy_setopt(h_curl, CURLOPT_HTTPHEADER, auth_header);
354
355 ✗ std::string reply;
356 ✗ curl_easy_setopt(h_curl, CURLOPT_NOPROGRESS, 1L);
357 ✗ curl_easy_setopt(h_curl, CURLOPT_USERAGENT, "cvmfs/" CVMFS_VERSION);
358 ✗ curl_easy_setopt(h_curl, CURLOPT_MAXREDIRS, 50L);
359 ✗ curl_easy_setopt(h_curl, CURLOPT_CUSTOMREQUEST, "POST");
360 ✗ curl_easy_setopt(h_curl, CURLOPT_URL, (api_url_ + "/payloads").c_str());
361 ✗ curl_easy_setopt(h_curl, CURLOPT_POSTFIELDS, NULL);
362 ✗ curl_easy_setopt(h_curl, CURLOPT_POSTFIELDSIZE_LARGE,
363 static_cast<curl_off_t>(payload_size));
364 ✗ curl_easy_setopt(h_curl, CURLOPT_READDATA, &payload);
365 ✗ curl_easy_setopt(h_curl, CURLOPT_READFUNCTION, SendCB);
366 ✗ curl_easy_setopt(h_curl, CURLOPT_WRITEFUNCTION, RecvCB);
367 ✗ curl_easy_setopt(h_curl, CURLOPT_WRITEDATA, &reply);
368
369 // Perform the Curl POST request
370 ✗ const CURLcode ret = curl_easy_perform(h_curl);
371 ✗ if (ret) {
372 ✗ LogCvmfs(kLogUploadGateway, kLogStderr,
373 "SessionContext::DoUpload - curl_easy_perform failed: %d", ret);
374 }
375
376 ✗ const UniquePtr<JsonDocument> reply_json(JsonDocument::Create(reply));
377 ✗ const JSON *reply_status = JsonDocument::SearchInObject(
378 reply_json->root(), "status", JSON_STRING);
379 const bool ok = (reply_status != NULL
380 ✗ && std::string(reply_status->string_value) == "ok");
381 ✗ if (!ok) {
382 ✗ LogCvmfs(kLogUploadGateway, kLogStderr,
383 "SessionContext::DoUpload - error reply: %s", reply.c_str());
384 }
385
386 ✗ curl_easy_cleanup(h_curl);
387 ✗ h_curl = NULL;
388
389 ✗ return ok && !ret;
390 }
391
392 76 void *SessionContext::UploadLoop(void *data) {
393 76 SessionContext *ctx = reinterpret_cast<SessionContext *>(data);
394 UploadJob *job;
395
396 while (true) {
397 200 job = ctx->upload_jobs_->PopBack();
398
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 200 if (job == &terminator_)
399 76 return NULL;
400
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 124 if (!ctx->DoUpload(job)) {
401 ✗ PANIC(kLogStderr, "SessionContext: could not submit payload. Aborting.");
402 }
403 124 job->result->Set(true);
404
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 124 delete job->pack;
405
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 124 delete job;
406 }
407 }
408
409 SessionContext::UploadJob SessionContext::terminator_;
410
411 } // namespace upload
412