1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  * Copyright (C) 2016 Mopria Alliance, Inc.
4  * Copyright (C) 2013 Hewlett-Packard Development Company, L.P.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  *      http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 
19 #include "ipp_print.h"
20 #include <math.h>
21 #include "ipphelper.h"
22 #include "wprint_debug.h"
23 
24 #include "plugins/media.h"
25 
26 #define TAG "ipp_print"
27 
28 static status_t _init(const ifc_print_job_t *this_p, const char *printer_address, int port,
29         const char *printer_uri);
30 
31 static status_t _validate_job(const ifc_print_job_t *this_p, wprint_job_params_t *job_params);
32 
33 static status_t _start_job(const ifc_print_job_t *this_p, const wprint_job_params_t *job_params);
34 
35 static int _send_data(const ifc_print_job_t *this_p, const char *buffer, size_t length);
36 
37 static status_t _end_job(const ifc_print_job_t *this_p);
38 
39 static void _destroy(const ifc_print_job_t *this_p);
40 
41 static const ifc_print_job_t _print_job_ifc = {
42         .init = _init, .validate_job = _validate_job, .start_job = _start_job,
43         .send_data = _send_data, .end_job = _end_job, .destroy = _destroy, .enable_timeout = NULL,
44 };
45 
46 /*
47  * Struct for handling an ipp print job
48  */
49 typedef struct {
50     http_t *http;
51     char printer_uri[1024];
52     char http_resource[1024];
53     http_status_t status;
54     ifc_print_job_t ifc;
55     const char *useragent;
56 } ipp_print_job_t;
57 
58 /*
59  * Returns a print job handle for an ipp print job
60  */
ipp_get_print_ifc(const ifc_wprint_t * wprint_ifc)61 const ifc_print_job_t *ipp_get_print_ifc(const ifc_wprint_t *wprint_ifc) {
62     LOGD("ipp_get_print_ifc: Enter");
63     ipp_print_job_t *ipp_job = (ipp_print_job_t *) malloc(sizeof(ipp_print_job_t));
64 
65     if (ipp_job == NULL) {
66         return NULL;
67     }
68 
69     memset(ipp_job, 0, sizeof(ipp_print_job_t));
70     ipp_job->status = HTTP_CONTINUE;
71 
72     memcpy(&ipp_job->ifc, &_print_job_ifc, sizeof(ifc_print_job_t));
73 
74     return &ipp_job->ifc;
75 }
76 
_init(const ifc_print_job_t * this_p,const char * printer_address,int port,const char * printer_uri)77 static status_t _init(const ifc_print_job_t *this_p, const char *printer_address, int port,
78         const char *printer_uri) {
79     LOGD("_init: Enter");
80     ipp_print_job_t *ipp_job;
81     const char *ipp_scheme;
82 
83     if (this_p == NULL) {
84         return ERROR;
85     }
86 
87     ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
88     if (ipp_job->http != NULL) {
89         httpClose(ipp_job->http);
90     }
91 
92     if ((printer_uri == NULL) || (strlen(printer_uri) == 0)) {
93         printer_uri = DEFAULT_IPP_URI_RESOURCE;
94     }
95 
96     int ippPortNumber = ((port == IPP_PORT) ? ippPort() : port);
97     LOGD("Normal URI for %s:%d", printer_address, ippPortNumber);
98     ipp_scheme = IPP_PREFIX;
99 
100     httpAssembleURIf(HTTP_URI_CODING_ALL, ipp_job->printer_uri, sizeof(ipp_job->printer_uri),
101             ipp_scheme, NULL, printer_address, ippPortNumber, printer_uri);
102     getResourceFromURI(ipp_job->printer_uri, ipp_job->http_resource, 1024);
103     ipp_job->http = httpConnect(printer_address, ippPortNumber);
104 
105     httpSetTimeout(ipp_job->http, DEFAULT_IPP_TIMEOUT, NULL, 0);
106 
107     return OK;
108 }
109 
_destroy(const ifc_print_job_t * this_p)110 static void _destroy(const ifc_print_job_t *this_p) {
111     LOGD("_destroy: Enter");
112     ipp_print_job_t *ipp_job;
113     if (this_p == NULL) {
114         return;
115     }
116 
117     ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
118     if (ipp_job->http != NULL) {
119         httpClose(ipp_job->http);
120     }
121 
122     free(ipp_job);
123 }
124 
125 /*
126  * Outputs width, height, and name for a given media size
127  */
_get_pwg_media_size(media_size_t media_size,float * mediaWidth,float * mediaHeight,const char ** mediaSizeName)128 static void _get_pwg_media_size(media_size_t media_size, float *mediaWidth, float *mediaHeight,
129         const char **mediaSizeName) {
130     int i = 0;
131 
132     for (i = 0; i < SUPPORTED_MEDIA_SIZE_COUNT; i++) {
133         if (media_size == SupportedMediaSizes[i].media_size) {
134             // Get the dimensions in 100 mm
135             if ((SupportedMediaSizes[i].WidthInMm == UNKNOWN_VALUE) ||
136                     (SupportedMediaSizes[i].HeightInMm == UNKNOWN_VALUE)) {
137                 *mediaWidth = floorf(_MI_TO_100MM(SupportedMediaSizes[i].WidthInInches));
138                 *mediaHeight = floorf(_MI_TO_100MM(SupportedMediaSizes[i].HeightInInches));
139             } else {
140                 *mediaWidth = SupportedMediaSizes[i].WidthInMm * 100;
141                 *mediaHeight = SupportedMediaSizes[i].HeightInMm * 100;
142             }
143             *mediaSizeName = (char *) SupportedMediaSizes[i].PWGName;
144 
145             LOGD("_get_pwg_media_size(): match found: %d, %s, width=%f, height=%f",
146                     media_size, SupportedMediaSizes[i].PCL6Name, *mediaWidth, *mediaHeight);
147             break;  // we found a match, so break out of loop
148         }
149     }
150 
151     if (i == SUPPORTED_MEDIA_SIZE_COUNT) {
152         // media size not found, defaulting to letter
153         LOGD("_get_pwg_media_size(): media size, %d, NOT FOUND, setting to letter", media_size);
154         _get_pwg_media_size(US_LETTER, mediaWidth, mediaHeight, mediaSizeName);
155     }
156 }
157 
158 /*
159  * Fills and returns an ipp request object with the given job parameters
160  */
_fill_job(int ipp_op,char * printer_uri,const wprint_job_params_t * job_params)161 static ipp_t *_fill_job(int ipp_op, char *printer_uri, const wprint_job_params_t *job_params) {
162     LOGD("_fill_job: Enter");
163     ipp_t *request = NULL; // IPP request object
164     ipp_attribute_t *attrptr; // Attribute pointer
165     ipp_t *col[2];
166     int col_index = -1;
167 
168     if (job_params == NULL) return NULL;
169 
170     request = ippNewRequest(ipp_op);
171     if (request == NULL) {
172         return request;
173     }
174 
175     if (set_ipp_version(request, printer_uri, NULL, IPP_VERSION_RESOLVED) != 0) {
176         ippDelete(request);
177         return NULL;
178     }
179     bool is_2_0_capable = job_params->ipp_2_0_supported;
180     bool is_ePCL_ipp_capable = job_params->epcl_ipp_supported;
181 
182     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL,
183             printer_uri);
184 
185     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name", NULL,
186             job_params->job_originating_user_name);
187     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL, job_params->job_name);
188 
189     // Fields for Document source application and source OS
190     bool is_doc_format_details_supported = (
191             job_params->accepts_app_name ||
192                     job_params->accepts_app_version ||
193                     job_params->accepts_os_name ||
194                     job_params->accepts_os_version);
195 
196     if (is_doc_format_details_supported) {
197         ipp_t *document_format_details = ippNew();
198         if (job_params->accepts_app_name) {
199             ippAddString(document_format_details, IPP_TAG_OPERATION, IPP_TAG_NAME,
200                     "document-source-application-name", NULL, g_appName);
201         }
202         if (job_params->accepts_app_version) {
203             ippAddString(document_format_details, IPP_TAG_OPERATION, IPP_TAG_TEXT,
204                     "document-source-application-version", NULL, g_appVersion);
205         }
206         if (job_params->accepts_os_name) {
207             ippAddString(document_format_details, IPP_TAG_OPERATION, IPP_TAG_NAME,
208                     "document-source-os-name", NULL, g_osName);
209         }
210         if (job_params->accepts_os_version) {
211             char version[40];
212             sprintf(version, "%d", g_API_version);
213             ippAddString(document_format_details, IPP_TAG_OPERATION, IPP_TAG_TEXT,
214                     "document-source-os-version", NULL, version);
215         }
216 
217         ippAddCollection(request, IPP_TAG_OPERATION, "document-format-details",
218                 document_format_details);
219         ippDelete(document_format_details);
220     }
221 
222     LOGD("_fill_job: pcl_type(%d), print_format(%s)", job_params->pcl_type,
223             job_params->print_format);
224     if (strcmp(job_params->print_format, PRINT_FORMAT_PDF) == 0) {
225         if (is_2_0_capable) {
226             // document-format needs to be the very next attribute for some printers
227             ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
228                     PRINT_FORMAT_PDF);
229             LOGD("_fill_job: setting document-format: %s", PRINT_FORMAT_PDF);
230         } else {
231             // some earlier devices don't print pdfs when we send the other PRINT_FORMAT_PDF
232             ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
233                     (job_params->accepts_pclm ? PRINT_FORMAT_PCLM : PRINT_FORMAT_PDF));
234             LOGD("_fill_job: setting document-format: %s",
235                     (job_params->accepts_pclm ? PRINT_FORMAT_PCLM : PRINT_FORMAT_PDF));
236         }
237 
238         if (is_ePCL_ipp_capable) {
239             if (job_params->render_flags & RENDER_FLAG_AUTO_SCALE) {
240                 ippAddBoolean(request, IPP_TAG_JOB, "pdf-fit-to-page", 1); // true
241             }
242         }
243 
244         // Fix Orientation bug for PDF printers only.
245         if (job_params->render_flags & RENDER_FLAG_PORTRAIT_MODE) {
246             ippAddInteger(request, IPP_TAG_JOB, IPP_TAG_ENUM, "orientation-requested",
247                     IPP_PRINT_ORIENTATION_PORTRAIT);
248         }
249         if (job_params->render_flags & RENDER_FLAG_LANDSCAPE_MODE) {
250             ippAddInteger(request, IPP_TAG_JOB, IPP_TAG_ENUM, "orientation-requested",
251                     IPP_PRINT_ORIENTATION_LANDSCAPE);
252         }
253     } else {
254         switch (job_params->pcl_type) {
255             case PCLm:
256                 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
257                         PRINT_FORMAT_PCLM);
258                 LOGD("_fill_job: setting document-format: %s", PRINT_FORMAT_PCLM);
259                 if (is_ePCL_ipp_capable) {
260                     ippAddResolution(request, IPP_TAG_JOB, "pclm-source-resolution",
261                             IPP_RES_PER_INCH, job_params->pixel_units,
262                             job_params->pixel_units);
263                 }
264                 break;
265             case PCLPWG:
266                 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
267                         PRINT_FORMAT_PWG);
268                 LOGD("_fill_job: setting document-format: %s", PRINT_FORMAT_PWG);
269                 break;
270             default:
271                 LOGD("_fill_job: unrecognized pcl_type: %d", job_params->pcl_type);
272                 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
273                         PRINT_FORMAT_AUTO);
274                 break;
275         }
276 
277         if (is_ePCL_ipp_capable) {
278             ippAddBoolean(request, IPP_TAG_JOB, "margins-pre-applied", 1); // true
279         }
280     }
281 
282     // Add copies support if required and allowed
283     if (job_params->copies_supported && (strcmp(job_params->print_format, PRINT_FORMAT_PDF) == 0)) {
284         ippAddInteger(request, IPP_TAG_JOB, IPP_TAG_INTEGER, "copies", job_params->num_copies);
285     }
286 
287     ippAddResolution(request, IPP_TAG_JOB, "printer-resolution", IPP_RES_PER_INCH,
288             job_params->pixel_units, job_params->pixel_units);
289     if (job_params->duplex == DUPLEX_MODE_BOOK) {
290         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_SIDES_TAG, NULL,
291                 IPP_SIDES_TWO_SIDED_LONG_EDGE);
292     } else if (job_params->duplex == DUPLEX_MODE_TABLET) {
293         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_SIDES_TAG, NULL,
294                 IPP_SIDES_TWO_SIDED_SHORT_EDGE);
295     } else {
296         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_SIDES_TAG, NULL,
297                 IPP_SIDES_ONE_SIDED);
298     }
299 
300     if (job_params->color_space == COLOR_SPACE_MONO) {
301         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_OUTPUT_MODE_TAG, NULL,
302                 IPP_OUTPUT_MODE_MONO);
303     } else {
304         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_OUTPUT_MODE_TAG, NULL,
305                 IPP_OUTPUT_MODE_COLOR);
306     }
307 
308     if (is_2_0_capable) {
309         // Not friendly to 1.1 devices.
310         if (job_params->media_tray != TRAY_SRC_AUTO_SELECT) {
311             if (job_params->media_tray == TRAY_SOURCE_PHOTO_TRAY) {
312                 col[++col_index] = ippNew();
313                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-source", NULL,
314                         "main-tray");
315             } else if (job_params->media_tray == TRAY_SOURCE_TRAY_1) {
316                 col[++col_index] = ippNew();
317                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-source", NULL,
318                         "main-tray");
319             }
320         }
321 
322         // MEDIA-Type is IPP 2.0 only
323         // put margins in with media-type
324         // Client-Error-Attribute-Or-Values-Not-Supported
325         col[++col_index] = ippNew();
326 
327         // set margins - if negative margins, set to full-bleed; otherwise set calculated values
328         if (job_params->borderless) {
329             LOGD("Setting Up BORDERLESS");
330             ippAddInteger(col[col_index], IPP_TAG_JOB, IPP_TAG_INTEGER, "media-bottom-margin", 0);
331             ippAddInteger(col[col_index], IPP_TAG_JOB, IPP_TAG_INTEGER, "media-top-margin", 0);
332             ippAddInteger(col[col_index], IPP_TAG_JOB, IPP_TAG_INTEGER, "media-left-margin", 0);
333             ippAddInteger(col[col_index], IPP_TAG_JOB, IPP_TAG_INTEGER, "media-right-margin", 0);
334         }
335 
336         switch (job_params->media_type) {
337             case MEDIA_PHOTO_GLOSSY:
338                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-type", NULL,
339                         "photographic-glossy");
340                 break;
341             case MEDIA_PHOTO:
342             case MEDIA_ADVANCED_PHOTO:
343             case MEDIA_PHOTO_MATTE:
344             case MEDIA_PREMIUM_PHOTO:
345             case MEDIA_OTHER_PHOTO:
346                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-type", NULL,
347                         "photographic");
348                 break;
349             default:
350                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-type", NULL,
351                         "stationery");
352                 break;
353         }
354 
355         float mediaWidth;
356         float mediaHeight;
357         const char *mediaSizeName = NULL;
358         _get_pwg_media_size(job_params->media_size, &mediaWidth, &mediaHeight, &mediaSizeName);
359         ipp_t *mediaSize = ippNew();
360 
361         if ((job_params->media_size_name) && (mediaSizeName != NULL)) {
362             ippAddString(mediaSize, IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-size-name", NULL,
363                     mediaSizeName);
364         } else {
365             ippAddInteger(mediaSize, IPP_TAG_JOB, IPP_TAG_INTEGER, "x-dimension", (int) mediaWidth);
366             ippAddInteger(mediaSize, IPP_TAG_JOB, IPP_TAG_INTEGER, "y-dimension",
367                     (int) mediaHeight);
368         }
369         ippAddCollection(col[col_index], IPP_TAG_JOB, "media-size", mediaSize);
370 
371         // can either set media or media-col.
372         // if both sent, device should return client-error-bad-request
373         ippAddCollections(request, IPP_TAG_JOB, "media-col", col_index + 1, (const ipp_t **) col);
374         while (col_index >= 0) {
375             ippDelete(col[col_index--]);
376         }
377     } else {
378         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, "media", NULL,
379                 mapDFMediaToIPPKeyword(job_params->media_size));
380     }
381 
382     LOGI("_fill_job (%d): request", ipp_op);
383     for (attrptr = ippFirstAttribute(request); attrptr; attrptr = ippNextAttribute(request)) {
384         print_attr(attrptr);
385     }
386 
387     return request;
388 }
389 
_validate_job(const ifc_print_job_t * this_p,wprint_job_params_t * job_params)390 static status_t  _validate_job(const ifc_print_job_t *this_p, wprint_job_params_t *job_params) {
391     LOGD("_validate_job: Enter");
392     status_t result = ERROR;
393     ipp_print_job_t *ipp_job;
394     ipp_t *response;
395     ipp_t *request = NULL;
396     ipp_status_t ipp_status;
397 
398     LOGD("_validate_job: ** validatePrintJob:  Entry");
399     do {
400         if (this_p == NULL) {
401             break;
402         }
403 
404         if (job_params == NULL) {
405             break;
406         }
407 
408         ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
409         if (ipp_job->http == NULL) {
410             break;
411         }
412 
413         ipp_job->useragent = NULL;
414         if ((job_params->useragent != NULL) && (strlen(job_params->useragent) > 0)) {
415             ipp_job->useragent = job_params->useragent;
416         }
417 
418         request = _fill_job(IPP_VALIDATE_JOB, ipp_job->printer_uri, job_params);
419 
420         if (ipp_job->useragent != NULL) {
421             httpSetDefaultField(ipp_job->http, HTTP_FIELD_USER_AGENT, ipp_job->useragent);
422         }
423         if ((response = ipp_doCupsRequest(ipp_job->http, request, ipp_job->http_resource,
424                 ipp_job->printer_uri))
425                 == NULL) {
426             ipp_status = cupsLastError();
427             LOGE("_validate_job:  validatePrintJob:  response is null:  ipp_status %d %s",
428                     ipp_status, ippErrorString(ipp_status));
429         } else {
430             ipp_status = cupsLastError();
431             LOGI("_validate_job: %s ipp_status %d  %x received:", ippOpString(IPP_VALIDATE_JOB),
432                     ipp_status, ipp_status);
433             ipp_attribute_t *attrptr;
434             for (attrptr = ippFirstAttribute(response); attrptr; attrptr = ippNextAttribute(
435                     response)) {
436                 print_attr(attrptr);
437             }
438 
439             ippDelete(response);
440         }
441 
442         LOGD("_validate_job : ipp_status: %d", ipp_status);
443         if (strncmp(ippErrorString(ipp_status), ippErrorString(IPP_OK),
444                 strlen(ippErrorString(IPP_OK))) == 0) {
445             result = OK;
446         } else {
447             result = ERROR;
448         }
449     } while (0);
450 
451     ippDelete(request);
452 
453     LOGD("_validate_job: ** validate_job result: %d", result);
454 
455     return result;
456 }
457 
_start_job(const ifc_print_job_t * this_p,const wprint_job_params_t * job_params)458 static status_t _start_job(const ifc_print_job_t *this_p, const wprint_job_params_t *job_params) {
459     LOGD("_start_job: Enter");
460     status_t result;
461     ipp_print_job_t *ipp_job;
462     ipp_t *request = NULL;
463     bool retry;
464     int failed_count = 0;
465 
466     LOGD("_start_job entry");
467     do {
468         retry = false;
469         if (this_p == NULL) {
470             LOGE("_start_job; this_p == NULL");
471             continue;
472         }
473 
474         ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
475 
476         ipp_job->useragent = NULL;
477         if ((job_params->useragent != NULL) && (strlen(job_params->useragent) > 0)) {
478             ipp_job->useragent = job_params->useragent;
479         }
480         request = _fill_job(IPP_PRINT_JOB, ipp_job->printer_uri, job_params);
481 
482         if (request == NULL) {
483             continue;
484         }
485 
486         if (ipp_job->useragent != NULL) {
487             httpSetDefaultField(ipp_job->http, HTTP_FIELD_USER_AGENT, ipp_job->useragent);
488         }
489         ipp_job->status = cupsSendRequest(ipp_job->http, request, ipp_job->http_resource, 0);
490         if (ipp_job->status != HTTP_CONTINUE) {
491             failed_count++;
492             if ((failed_count == 1) &&
493                     ((ipp_job->status == HTTP_ERROR) || (ipp_job->status >= HTTP_BAD_REQUEST))) {
494                 retry = true;
495                 LOGI("_start_job retry due to internal error");
496                 // We will retry for one of these failures since we could have just
497                 // lost our connection to the server and cups will not always attempt
498                 // a reconnect for us.
499                 ippDelete(request);
500                 continue;
501             }
502 
503             _cupsSetHTTPError(ipp_job->status);
504         }
505         ippDelete(request);
506         LOGI("_start_job httpPrint fd %d status %d ipp_status %d", ipp_job->http->fd,
507                 ipp_job->status, cupsLastError());
508 
509         result = ((ipp_job->status == HTTP_CONTINUE) ? OK : ERROR);
510     } while (retry);
511 
512     return result;
513 }
514 
_send_data(const ifc_print_job_t * this_p,const char * buffer,size_t length)515 static int _send_data(const ifc_print_job_t *this_p, const char *buffer, size_t length) {
516     ipp_print_job_t *ipp_job;
517     if (this_p == NULL) {
518         return ERROR;
519     }
520 
521     ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
522     if (ipp_job->http == NULL) {
523         return ERROR;
524     }
525 
526     if (ipp_job->status != HTTP_CONTINUE) {
527         return ERROR;
528     }
529 
530     if (length != 0) {
531         if (ipp_job->useragent != NULL) {
532             httpSetDefaultField(ipp_job->http, HTTP_FIELD_USER_AGENT, ipp_job->useragent);
533         }
534         ipp_job->status = cupsWriteRequestData(ipp_job->http, buffer, length);
535     }
536     return ((ipp_job->status == HTTP_CONTINUE) ? length : (int) ERROR);
537 }
538 
_end_job(const ifc_print_job_t * this_p)539 static status_t _end_job(const ifc_print_job_t *this_p) {
540     LOGD("_end_job: Enter");
541     status_t result = ERROR;
542     ipp_t *response;
543     ipp_attribute_t *attrptr;
544     int op = IPP_PRINT_JOB;
545     ipp_print_job_t *ipp_job;
546     int job_id = -1;
547 
548     char buffer[1024];
549 
550     if (this_p == NULL) {
551         return result;
552     }
553 
554     ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
555 
556     if (ipp_job->http == NULL) {
557         return result;
558     }
559 
560     LOGD("_end_job: entry httpPrint %d", ipp_job->http->fd);
561 
562     if (ipp_job->useragent != NULL) {
563         httpSetDefaultField(ipp_job->http, HTTP_FIELD_USER_AGENT, ipp_job->useragent);
564     }
565     ipp_job->status = cupsWriteRequestData(ipp_job->http, buffer, 0);
566 
567     if (ipp_job->status != HTTP_CONTINUE) {
568         LOGE("Error: from cupsWriteRequestData http.fd %d:  status %d",
569                 ipp_job->http->fd, ipp_job->status);
570     } else {
571         result = OK;
572         LOGD("0 length Bytes sent, status %d", ipp_job->status);
573         response = cupsGetResponse(ipp_job->http, ipp_job->http_resource);
574 
575         if ((attrptr = ippFindAttribute(response, "job-id", IPP_TAG_INTEGER)) == NULL) {
576             LOGE("sent cupsGetResponse %s job id is null; received", ippOpString(op));
577         } else {
578             job_id = ippGetInteger(attrptr, 0);
579             LOGI("sent cupsGetResponse %s job_id %d; received", ippOpString(op), job_id);
580         }
581 
582         if (response != NULL) {
583             for (attrptr = ippFirstAttribute(response); attrptr; attrptr = ippNextAttribute(
584                     response)) {
585                 print_attr(attrptr);
586                 if (strcmp(ippGetName(attrptr), "job-state-reasons") == 0) {
587                     int i;
588                     for (i = 0; i < ippGetCount(attrptr); i++) {
589                         if (strcmp(ippGetString(attrptr, i, NULL), "job-canceled-at-device")
590                                 == 0) {
591                             result = CANCELLED;
592                             break;
593                         }
594                     }
595                 }
596             }
597             ippDelete(response);
598         }
599     }
600     LOGD("_end_job: exit status %d job_id %d", ipp_job->status, job_id);
601 
602     return result;
603 }