GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/session_context.cc
Date: 2026-08-16 02:40:26
Exec Total Coverage
Lines: 139 229 60.7%
Branches: 80 313 25.6%
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
28 252 size_t SendCB(void *ptr, size_t size, size_t nmemb, void *userp) {
29 252 CurlSendPayload *payload = static_cast<CurlSendPayload *>(userp);
30
31 252 const size_t max_chunk_size = size * nmemb;
32
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 252 if (max_chunk_size < 1) {
33 ✗ return 0;
34 }
35
36 252 size_t current_chunk_size = 0;
37
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 504 while (current_chunk_size < max_chunk_size) {
38
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 336 if (payload->index < payload->json_message->size()) {
39 // Can add a chunk from the JSON message
40 42 const size_t read_size = std::min(
41 84 max_chunk_size - current_chunk_size,
42 42 payload->json_message->size() - payload->index);
43 42 current_chunk_size += read_size;
44 42 std::memcpy(ptr, payload->json_message->data() + payload->index,
45 read_size);
46 42 payload->index += read_size;
47 } else {
48 // Can add a chunk from the payload
49 294 const size_t max_read_size = max_chunk_size - current_chunk_size;
50 294 const unsigned nbytes = payload->pack_serializer->ProduceNext(
51 max_read_size,
52 static_cast<unsigned char *>(ptr) + current_chunk_size);
53 294 current_chunk_size += nbytes;
54
55
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 294 if (!nbytes) {
56 84 break;
57 }
58 }
59 }
60
61 252 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
76 321 SessionContextBase::SessionContextBase()
77 321 : upload_results_(kMaxNumJobs)
78 321 , api_url_()
79 321 , session_token_()
80 321 , key_id_()
81 321 , secret_()
82 321 , max_pack_size_(ObjectPack::kDefaultLimit)
83 321 , active_handles_()
84 321 , current_pack_(NULL)
85 321 , current_pack_mtx_()
86 321 , bytes_committed_(0)
87 321 , bytes_dispatched_(0)
88 321 , initialized_(false) { }
89
90 642 SessionContextBase::~SessionContextBase() { }
91
92 321 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) {
98 321 bool ret = true;
99
100 // Initialize session context lock
101 pthread_mutexattr_t attr;
102 321 if (pthread_mutexattr_init(&attr)
103
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 321 || pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE)
104
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 321 || pthread_mutex_init(&current_pack_mtx_, &attr)
105
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 642 || 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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 321 api_url_ = api_url;
113
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 321 session_token_ = session_token;
114
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 321 key_id_ = key_id;
115
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 321 secret_ = secret;
116 321 max_pack_size_ = max_pack_size;
117
118 321 bytes_committed_ = 0u;
119 321 bytes_dispatched_ = 0u;
120
121
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 321 assert(upload_results_.IsEmpty());
122
123 // Ensure that there are not open object packs
124
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 321 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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 321 ret = InitializeDerived(max_queue_size) && ret;
132
133 321 initialized_ = true;
134
135 321 return ret;
136 }
137
138 321 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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 321 assert(active_handles_.empty());
142
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 321 if (!initialized_) {
143 ✗ assert(!commit);
144 ✗ return true;
145 }
146
147 {
148 321 const MutexLockGuard lock(current_pack_mtx_);
149
150
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 321 if (current_pack_ && current_pack_->GetNoObjects() > 0) {
151
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 168 Dispatch();
152 168 current_pack_ = NULL;
153 }
154 321 }
155
156 321 bool results = true;
157
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 1623 while (!upload_results_.IsEmpty()) {
158 1302 Future<bool> *future = upload_results_.PopBack();
159
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 1302 results = future->Get() && results;
160
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 1302 delete future;
161 }
162
163
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 321 if (commit) {
164
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 294 if (old_root_hash.empty() || new_root_hash.empty()) {
165 ✗ return false;
166 }
167 294 const bool commit_result = Commit(old_root_hash, new_root_hash, tag);
168
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 294 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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 321 results &= FinalizeDerived() && (bytes_committed_ == bytes_dispatched_);
179
180 321 pthread_mutex_destroy(&current_pack_mtx_);
181
182 321 initialized_ = false;
183
184 321 return results;
185 }
186
187 2184 ObjectPack::BucketHandle SessionContextBase::NewBucket() {
188 2184 const MutexLockGuard lock(current_pack_mtx_);
189
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 2184 if (!current_pack_) {
190
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 672 current_pack_ = new ObjectPack(max_pack_size_);
191 }
192
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 2184 ObjectPack::BucketHandle hd = current_pack_->NewBucket();
193
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 2184 active_handles_.push_back(hd);
194 2184 return hd;
195 2184 }
196
197 2856 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 2856 const MutexLockGuard lock(current_pack_mtx_);
203
204
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 2856 if (!current_pack_) {
205 ✗ LogCvmfs(kLogUploadGateway, kLogStderr,
206 "Error: Called SessionBaseContext::CommitBucket without an open "
207 "ObjectPack.");
208 ✗ return false;
209 }
210
211 2856 const uint64_t size0 = current_pack_->size();
212
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 2856 const bool committed = current_pack_->CommitBucket(type, id, handle, name);
213
214
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 2856 if (committed) { // Current pack is still not full
215
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 4368 active_handles_.erase(
216
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 2184 std::remove(active_handles_.begin(), active_handles_.end(), handle),
217 2184 active_handles_.end());
218 2184 const uint64_t size1 = current_pack_->size();
219 2184 bytes_committed_ += size1 - size0;
220
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 2184 if (force_dispatch) {
221
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 504 Dispatch();
222 504 current_pack_ = NULL;
223 }
224 } else { // Current pack is full and can be dispatched
225 672 uint64_t new_size = 0;
226
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 672 if (handle->capacity > max_pack_size_) {
227 42 new_size = handle->capacity + 1;
228 } else {
229 630 new_size = max_pack_size_;
230 }
231
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 672 ObjectPack *new_pack = new ObjectPack(new_size);
232
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 1596 for (size_t i = 0u; i < active_handles_.size(); ++i) {
233
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 924 current_pack_->TransferBucket(active_handles_[i], new_pack);
234 }
235
236
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 672 if (current_pack_->GetNoObjects() > 0) {
237
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 630 Dispatch();
238 }
239 672 current_pack_ = new_pack;
240
241
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 672 CommitBucket(type, id, handle, name, false);
242 }
243
244 2856 return true;
245 2856 }
246
247 1302 void SessionContextBase::Dispatch() {
248 1302 const MutexLockGuard lock(current_pack_mtx_);
249
250
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 1302 if (!current_pack_) {
251 ✗ return;
252 }
253
254 1302 bytes_dispatched_ += current_pack_->size();
255
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 1302 upload_results_.EnqueueFront(DispatchObjectPack(current_pack_));
256
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 1302 }
257
258 321 SessionContext::SessionContext()
259
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 321 : SessionContextBase(), upload_jobs_(), worker_() { }
260
261 321 bool SessionContext::InitializeDerived(uint64_t max_queue_size) {
262 // Start worker thread
263
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 321 upload_jobs_ = new Tube<UploadJob>(max_queue_size);
264
265 321 const int retval = pthread_create(&worker_, NULL, UploadLoop,
266 reinterpret_cast<void *>(this));
267
268 321 return !retval;
269 }
270
271 321 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 //
280 321 upload_jobs_->EnqueueFront(&terminator_);
281 321 pthread_join(worker_, NULL);
282
283 321 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 // Space-separated list of tags the receiver should remove in the same history
299 // transaction as this commit. Only sent for tag-removal commits; omitted
300 // otherwise for backwards compatibility with older gateways.
301 ✗ if (!tag.delete_tags().empty()) {
302 ✗ request_input.Add("delete_tags", tag.delete_tags());
303 }
304 ✗ if (tag.auto_tag_threshold() > 0) {
305 ✗ request_input.Add("auto_tag_threshold",
306 ✗ static_cast<int64_t>(tag.auto_tag_threshold()));
307 }
308 ✗ const std::string request = request_input.GenerateString();
309 ✗ CurlBuffer buffer;
310 ✗ return MakeEndRequest("POST", key_id_, secret_, session_token_, api_url_,
311 ✗ request, &buffer);
312 }
313
314 1302 Future<bool> *SessionContext::DispatchObjectPack(ObjectPack *pack) {
315 1302 UploadJob *job = new UploadJob;
316 1302 Future<bool> *result = new Future<bool>();
317 1302 job->pack = pack;
318 1302 job->result = result;
319 1302 upload_jobs_->EnqueueFront(job);
320 1302 return result;
321 }
322
323 ✗ bool SessionContext::DoUpload(const SessionContext::UploadJob *job) {
324 // Set up the object pack serializer
325 ✗ ObjectPackProducer serializer(job->pack);
326
327 ✗ shash::Any payload_digest(shash::kSha1);
328 ✗ serializer.GetDigest(&payload_digest);
329 ✗ const std::string json_msg = "{\"session_token\" : \"" + session_token_
330 ✗ + "\", \"payload_digest\" : \""
331 ✗ + payload_digest.ToString(false)
332 ✗ + "\", \"header_size\" : \""
333 ✗ + StringifyInt(serializer.GetHeaderSize())
334 ✗ + "\", \"api_version\" : \""
335 ✗ + StringifyInt(gateway::APIVersion()) + "\"}";
336
337 // Compute HMAC
338 ✗ shash::Any hmac(shash::kSha1);
339 ✗ shash::HmacString(secret_, json_msg, &hmac);
340
341 CurlSendPayload payload;
342 ✗ payload.json_message = &json_msg;
343 ✗ payload.pack_serializer = &serializer;
344 ✗ payload.index = 0;
345
346 ✗ const size_t payload_size = json_msg.size() + serializer.GetHeaderSize()
347 ✗ + job->pack->size();
348
349 // Prepare the Curl POST request
350 ✗ CURL *h_curl = curl_easy_init();
351
352 ✗ if (!h_curl) {
353 ✗ return false;
354 }
355
356 // Set HTTP headers (Authorization and Message-Size)
357 ✗ std::string header_str = std::string("Authorization: ") + key_id_ + " "
358 ✗ + Base64(hmac.ToString(false));
359 ✗ struct curl_slist *auth_header = NULL;
360 ✗ auth_header = curl_slist_append(auth_header, header_str.c_str());
361 ✗ header_str = std::string("Message-Size: ") + StringifyInt(json_msg.size());
362 ✗ auth_header = curl_slist_append(auth_header, header_str.c_str());
363 ✗ curl_easy_setopt(h_curl, CURLOPT_HTTPHEADER, auth_header);
364
365 ✗ std::string reply;
366 ✗ curl_easy_setopt(h_curl, CURLOPT_NOPROGRESS, 1L);
367 ✗ curl_easy_setopt(h_curl, CURLOPT_USERAGENT, "cvmfs/" CVMFS_VERSION);
368 ✗ curl_easy_setopt(h_curl, CURLOPT_MAXREDIRS, 50L);
369 ✗ curl_easy_setopt(h_curl, CURLOPT_CUSTOMREQUEST, "POST");
370 ✗ curl_easy_setopt(h_curl, CURLOPT_URL, (api_url_ + "/payloads").c_str());
371 ✗ curl_easy_setopt(h_curl, CURLOPT_POSTFIELDS, NULL);
372 ✗ curl_easy_setopt(h_curl, CURLOPT_POSTFIELDSIZE_LARGE,
373 static_cast<curl_off_t>(payload_size));
374 ✗ curl_easy_setopt(h_curl, CURLOPT_READDATA, &payload);
375 ✗ curl_easy_setopt(h_curl, CURLOPT_READFUNCTION, SendCB);
376 ✗ curl_easy_setopt(h_curl, CURLOPT_WRITEFUNCTION, RecvCB);
377 ✗ curl_easy_setopt(h_curl, CURLOPT_WRITEDATA, &reply);
378
379 // Perform the Curl POST request
380 ✗ const CURLcode ret = curl_easy_perform(h_curl);
381 ✗ if (ret) {
382 ✗ LogCvmfs(kLogUploadGateway, kLogStderr,
383 "SessionContext::DoUpload - curl_easy_perform failed: %d", ret);
384 }
385
386 ✗ const UniquePtr<JsonDocument> reply_json(JsonDocument::Create(reply));
387 ✗ const JSON *reply_status = JsonDocument::SearchInObject(
388 reply_json->root(), "status", JSON_STRING);
389 const bool ok = (reply_status != NULL
390 ✗ && std::string(reply_status->get<std::string>()) == "ok");
391 ✗ if (!ok) {
392 ✗ LogCvmfs(kLogUploadGateway, kLogStderr,
393 "SessionContext::DoUpload - error reply: %s", reply.c_str());
394 }
395
396 ✗ curl_easy_cleanup(h_curl);
397 ✗ h_curl = NULL;
398
399 ✗ return ok && !ret;
400 }
401
402 321 void *SessionContext::UploadLoop(void *data) {
403 321 SessionContext *ctx = reinterpret_cast<SessionContext *>(data);
404 UploadJob *job;
405
406 while (true) {
407 1623 job = ctx->upload_jobs_->PopBack();
408
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 1623 if (job == &terminator_)
409 321 return NULL;
410
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 1302 if (!ctx->DoUpload(job)) {
411 ✗ PANIC(kLogStderr, "SessionContext: could not submit payload. Aborting.");
412 }
413 1302 job->result->Set(true);
414
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 1302 delete job->pack;
415
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 1302 delete job;
416 }
417 }
418
419 SessionContext::UploadJob SessionContext::terminator_;
420
421 } // namespace upload
422