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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "printing/backend/cups_connection.h" | 5 #include "printing/backend/cups_connection.h" |
6 | 6 |
| 7 #include <map> |
| 8 #include <set> |
7 #include <string> | 9 #include <string> |
8 #include <utility> | 10 #include <utility> |
9 | 11 |
10 #include "base/logging.h" | 12 #include "base/logging.h" |
11 #include "base/memory/ptr_util.h" | 13 #include "base/memory/ptr_util.h" |
12 #include "base/strings/stringprintf.h" | 14 #include "base/strings/stringprintf.h" |
| 15 #include "printing/backend/cups_jobs.h" |
13 | 16 |
14 namespace printing { | 17 namespace printing { |
15 | 18 |
16 namespace { | 19 namespace { |
17 | 20 |
18 const int kTimeoutMs = 3000; | 21 constexpr int kTimeoutMs = 3000; |
| 22 |
| 23 // The number of jobs we'll retrieve for a queue. We expect a user to queue at |
| 24 // most 10 jobs per printer. If they queue more, they won't receive updates for |
| 25 // the 11th job until one finishes. |
| 26 constexpr int kProcessingJobsLimit = 10; |
| 27 |
| 28 // The number of completed jobs that are retrieved. We only need one update for |
| 29 // a completed job to confirm its final status. We could retrieve one but we |
| 30 // retrieve the last 3 in case that many finished between queries. |
| 31 constexpr int kCompletedJobsLimit = 3; |
19 | 32 |
20 class DestinationEnumerator { | 33 class DestinationEnumerator { |
21 public: | 34 public: |
22 DestinationEnumerator() {} | 35 DestinationEnumerator() {} |
23 | 36 |
24 static int cups_callback(void* user_data, unsigned flags, cups_dest_t* dest) { | 37 static int cups_callback(void* user_data, unsigned flags, cups_dest_t* dest) { |
25 cups_dest_t* copied_dest; | 38 cups_dest_t* copied_dest; |
26 cupsCopyDest(dest, 0, &copied_dest); | 39 cupsCopyDest(dest, 0, &copied_dest); |
27 reinterpret_cast<DestinationEnumerator*>(user_data)->store_dest( | 40 reinterpret_cast<DestinationEnumerator*>(user_data)->store_dest( |
28 copied_dest); | 41 copied_dest); |
29 | 42 |
30 // keep going | 43 // keep going |
31 return 1; | 44 return 1; |
32 } | 45 } |
33 | 46 |
34 void store_dest(cups_dest_t* dest) { dests_.emplace_back(dest); } | 47 void store_dest(cups_dest_t* dest) { dests_.emplace_back(dest); } |
35 | 48 |
36 // Returns the collected destinations. | 49 // Returns the collected destinations. |
37 std::vector<std::unique_ptr<cups_dest_t, DestinationDeleter>>& get_dests() { | 50 std::vector<std::unique_ptr<cups_dest_t, DestinationDeleter>>& get_dests() { |
38 return dests_; | 51 return dests_; |
39 } | 52 } |
40 | 53 |
41 private: | 54 private: |
42 std::vector<std::unique_ptr<cups_dest_t, DestinationDeleter>> dests_; | 55 std::vector<std::unique_ptr<cups_dest_t, DestinationDeleter>> dests_; |
43 | 56 |
44 DISALLOW_COPY_AND_ASSIGN(DestinationEnumerator); | 57 DISALLOW_COPY_AND_ASSIGN(DestinationEnumerator); |
45 }; | 58 }; |
46 | 59 |
47 CupsJob createCupsJob(int job_id, | |
48 base::StringPiece job_title, | |
49 base::StringPiece printer_id, | |
50 ipp_jstate_t state) { | |
51 CupsJob::JobState converted_state = CupsJob::UNKNOWN; | |
52 switch (state) { | |
53 case IPP_JOB_ABORTED: | |
54 converted_state = CupsJob::ABORTED; | |
55 break; | |
56 case IPP_JOB_CANCELLED: | |
57 converted_state = CupsJob::CANCELED; | |
58 break; | |
59 case IPP_JOB_COMPLETED: | |
60 converted_state = CupsJob::COMPLETED; | |
61 break; | |
62 case IPP_JOB_HELD: | |
63 converted_state = CupsJob::HELD; | |
64 break; | |
65 case IPP_JOB_PENDING: | |
66 converted_state = CupsJob::PENDING; | |
67 break; | |
68 case IPP_JOB_PROCESSING: | |
69 converted_state = CupsJob::PROCESSING; | |
70 break; | |
71 case IPP_JOB_STOPPED: | |
72 converted_state = CupsJob::STOPPED; | |
73 break; | |
74 default: | |
75 NOTREACHED(); | |
76 break; | |
77 } | |
78 | |
79 return {job_id, job_title.as_string(), printer_id.as_string(), | |
80 converted_state}; | |
81 } | |
82 | |
83 } // namespace | 60 } // namespace |
84 | 61 |
85 CupsConnection::CupsConnection(const GURL& print_server_url, | 62 CupsConnection::CupsConnection(const GURL& print_server_url, |
86 http_encryption_t encryption, | 63 http_encryption_t encryption, |
87 bool blocking) | 64 bool blocking) |
88 : print_server_url_(print_server_url), | 65 : print_server_url_(print_server_url), |
89 cups_encryption_(encryption), | 66 cups_encryption_(encryption), |
90 blocking_(blocking), | 67 blocking_(blocking), |
91 cups_http_(nullptr) {} | 68 cups_http_(nullptr) {} |
92 | 69 |
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155 cups_dest_t* dest = cupsGetNamedDest(cups_http_.get(), name.c_str(), nullptr); | 132 cups_dest_t* dest = cupsGetNamedDest(cups_http_.get(), name.c_str(), nullptr); |
156 if (!dest) | 133 if (!dest) |
157 return nullptr; | 134 return nullptr; |
158 | 135 |
159 cups_dinfo_t* info = cupsCopyDestInfo(cups_http_.get(), dest); | 136 cups_dinfo_t* info = cupsCopyDestInfo(cups_http_.get(), dest); |
160 return base::MakeUnique<CupsPrinter>( | 137 return base::MakeUnique<CupsPrinter>( |
161 cups_http_.get(), std::unique_ptr<cups_dest_t, DestinationDeleter>(dest), | 138 cups_http_.get(), std::unique_ptr<cups_dest_t, DestinationDeleter>(dest), |
162 std::unique_ptr<cups_dinfo_t, DestInfoDeleter>(info)); | 139 std::unique_ptr<cups_dinfo_t, DestInfoDeleter>(info)); |
163 } | 140 } |
164 | 141 |
165 std::vector<CupsJob> CupsConnection::GetJobs() { | 142 bool CupsConnection::GetJobs(const std::vector<std::string>& printer_ids, |
166 cups_job_t* jobs; | 143 std::vector<QueueStatus>* queues) { |
167 int num_jobs = cupsGetJobs2(cups_http_.get(), // http connection | 144 DCHECK(queues); |
168 &jobs, // out param | 145 if (!Connect()) { |
169 nullptr, // all printers | 146 LOG(ERROR) << "Could not establish connection to CUPS"; |
170 0, // all users | 147 return false; |
171 CUPS_WHICHJOBS_ALL); | |
172 | |
173 const JobsDeleter deleter(num_jobs); | |
174 std::unique_ptr<cups_job_t, const JobsDeleter&> scoped_jobs(jobs, deleter); | |
175 | |
176 std::vector<CupsJob> job_copies; | |
177 for (int i = 0; i < num_jobs; i++) { | |
178 job_copies.push_back( | |
179 createCupsJob(jobs[i].id, jobs[i].title, jobs[i].dest, jobs[i].state)); | |
180 } | 148 } |
181 | 149 |
182 return job_copies; | 150 std::vector<QueueStatus> temp_queues; |
| 151 |
| 152 for (const std::string& id : printer_ids) { |
| 153 temp_queues.emplace_back(); |
| 154 QueueStatus* queue_status = &temp_queues.back(); |
| 155 |
| 156 if (!GetPrinterStatus(cups_http_.get(), id, |
| 157 &queue_status->printer_status)) { |
| 158 LOG(WARNING) << "Could not retrieve printer status for " << id; |
| 159 return false; |
| 160 } |
| 161 |
| 162 if (!GetCupsJobs(cups_http_.get(), id, kCompletedJobsLimit, COMPLETED, |
| 163 &queue_status->jobs)) { |
| 164 LOG(WARNING) << "Could not get completed jobs for " << id; |
| 165 return false; |
| 166 } |
| 167 |
| 168 if (!GetCupsJobs(cups_http_.get(), id, kProcessingJobsLimit, PROCESSING, |
| 169 &queue_status->jobs)) { |
| 170 LOG(WARNING) << "Could not get in progress jobs for " << id; |
| 171 return false; |
| 172 } |
| 173 } |
| 174 queues->insert(queues->end(), temp_queues.begin(), temp_queues.end()); |
| 175 |
| 176 return true; |
183 } | 177 } |
184 | 178 |
185 std::string CupsConnection::server_name() const { | 179 std::string CupsConnection::server_name() const { |
186 return print_server_url_.host(); | 180 return print_server_url_.host(); |
187 } | 181 } |
188 | 182 |
189 int CupsConnection::last_error() const { | 183 int CupsConnection::last_error() const { |
190 return cupsLastError(); | 184 return cupsLastError(); |
191 } | 185 } |
192 | 186 |
193 } // namespace printing | 187 } // namespace printing |
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