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, bool use_secure_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,bool use_secure_uri)77 static status_t _init(const ifc_print_job_t *this_p, const char *printer_address, int port,
78         const char *printer_uri, bool use_secure_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 = (use_secure_uri) ? IPPS_PREFIX : 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     if (use_secure_uri) {
104         ipp_job->http = httpConnectEncrypt(printer_address, ippPortNumber, HTTP_ENCRYPTION_ALWAYS);
105 
106         // If ALWAYS doesn't work, fall back to REQUIRED
107         if (ipp_job->http == NULL) {
108             ipp_job->http = httpConnectEncrypt(printer_address, ippPortNumber, HTTP_ENCRYPT_REQUIRED);
109         }
110     } else {
111         ipp_job->http = httpConnectEncrypt(printer_address, ippPortNumber, HTTP_ENCRYPTION_IF_REQUESTED);
112     }
113 
114     httpSetTimeout(ipp_job->http, DEFAULT_IPP_TIMEOUT, NULL, 0);
115 
116     return OK;
117 }
118 
_destroy(const ifc_print_job_t * this_p)119 static void _destroy(const ifc_print_job_t *this_p) {
120     LOGD("_destroy: Enter");
121     ipp_print_job_t *ipp_job;
122     if (this_p == NULL) {
123         return;
124     }
125 
126     ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
127     if (ipp_job->http != NULL) {
128         httpClose(ipp_job->http);
129     }
130 
131     free(ipp_job);
132 }
133 
134 /*
135  * Outputs width, height, and name for a given media size
136  */
_get_pwg_media_size(media_size_t media_size,float * mediaWidth,float * mediaHeight,const char ** mediaSizeName)137 static void _get_pwg_media_size(media_size_t media_size, float *mediaWidth, float *mediaHeight,
138         const char **mediaSizeName) {
139     int i = 0;
140 
141     for (i = 0; i < SUPPORTED_MEDIA_SIZE_COUNT; i++) {
142         if (media_size == SupportedMediaSizes[i].media_size) {
143             // Get the dimensions in 100 mm
144             if ((SupportedMediaSizes[i].WidthInMm == UNKNOWN_VALUE) ||
145                     (SupportedMediaSizes[i].HeightInMm == UNKNOWN_VALUE)) {
146                 *mediaWidth = floorf(_MI_TO_100MM(SupportedMediaSizes[i].WidthInInches));
147                 *mediaHeight = floorf(_MI_TO_100MM(SupportedMediaSizes[i].HeightInInches));
148             } else {
149                 *mediaWidth = SupportedMediaSizes[i].WidthInMm * 100;
150                 *mediaHeight = SupportedMediaSizes[i].HeightInMm * 100;
151             }
152             *mediaSizeName = (char *) SupportedMediaSizes[i].PWGName;
153 
154             LOGD("_get_pwg_media_size(): match found: %d, %s, width=%f, height=%f",
155                     media_size, SupportedMediaSizes[i].PCL6Name, *mediaWidth, *mediaHeight);
156             break;  // we found a match, so break out of loop
157         }
158     }
159 
160     if (i == SUPPORTED_MEDIA_SIZE_COUNT) {
161         // media size not found, defaulting to letter
162         LOGD("_get_pwg_media_size(): media size, %d, NOT FOUND, setting to letter", media_size);
163         _get_pwg_media_size(US_LETTER, mediaWidth, mediaHeight, mediaSizeName);
164     }
165 }
166 
167 /*
168  * Fills and returns an ipp request object with the given job parameters
169  */
_fill_job(int ipp_op,char * printer_uri,const wprint_job_params_t * job_params)170 static ipp_t *_fill_job(int ipp_op, char *printer_uri, const wprint_job_params_t *job_params) {
171     LOGD("_fill_job: Enter");
172     ipp_t *request = NULL; // IPP request object
173     ipp_attribute_t *attrptr; // Attribute pointer
174     ipp_t *col[2];
175     int col_index = -1;
176 
177     if (job_params == NULL) return NULL;
178 
179     request = ippNewRequest(ipp_op);
180     if (request == NULL) {
181         return request;
182     }
183 
184     if (set_ipp_version(request, printer_uri, NULL, IPP_VERSION_RESOLVED) != 0) {
185         ippDelete(request);
186         return NULL;
187     }
188     bool is_2_0_capable = job_params->ipp_2_0_supported;
189     bool is_ePCL_ipp_capable = job_params->epcl_ipp_supported;
190 
191     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL,
192             printer_uri);
193 
194     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name", NULL,
195             job_params->job_originating_user_name);
196     ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL, job_params->job_name);
197 
198     // Fields for Document source application and source OS
199     bool is_doc_format_details_supported = (
200             job_params->accepts_app_name ||
201                     job_params->accepts_app_version ||
202                     job_params->accepts_os_name ||
203                     job_params->accepts_os_version);
204 
205     if (is_doc_format_details_supported) {
206         ipp_t *document_format_details = ippNew();
207         if (job_params->accepts_app_name) {
208             ippAddString(document_format_details, IPP_TAG_OPERATION, IPP_TAG_NAME,
209                     "document-source-application-name", NULL, g_appName);
210         }
211         if (job_params->accepts_app_version) {
212             ippAddString(document_format_details, IPP_TAG_OPERATION, IPP_TAG_TEXT,
213                     "document-source-application-version", NULL, g_appVersion);
214         }
215         if (job_params->accepts_os_name) {
216             ippAddString(document_format_details, IPP_TAG_OPERATION, IPP_TAG_NAME,
217                     "document-source-os-name", NULL, g_osName);
218         }
219         if (job_params->accepts_os_version) {
220             char version[40];
221             sprintf(version, "%d", g_API_version);
222             ippAddString(document_format_details, IPP_TAG_OPERATION, IPP_TAG_TEXT,
223                     "document-source-os-version", NULL, version);
224         }
225 
226         ippAddCollection(request, IPP_TAG_OPERATION, "document-format-details",
227                 document_format_details);
228         ippDelete(document_format_details);
229     }
230 
231     LOGD("_fill_job: pcl_type(%d), print_format(%s)", job_params->pcl_type,
232             job_params->print_format);
233     if (strcmp(job_params->print_format, PRINT_FORMAT_PDF) == 0) {
234         if (is_2_0_capable) {
235             // document-format needs to be the very next attribute for some printers
236             ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
237                     PRINT_FORMAT_PDF);
238             LOGD("_fill_job: setting document-format: %s", PRINT_FORMAT_PDF);
239         } else {
240             // some earlier devices don't print pdfs when we send the other PRINT_FORMAT_PDF
241             ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
242                     (job_params->accepts_pclm ? PRINT_FORMAT_PCLM : PRINT_FORMAT_PDF));
243             LOGD("_fill_job: setting document-format: %s",
244                     (job_params->accepts_pclm ? PRINT_FORMAT_PCLM : PRINT_FORMAT_PDF));
245         }
246 
247         if (is_ePCL_ipp_capable) {
248             if (job_params->render_flags & RENDER_FLAG_AUTO_SCALE) {
249                 ippAddBoolean(request, IPP_TAG_JOB, "pdf-fit-to-page", 1); // true
250             }
251         }
252 
253         // Fix Orientation bug for PDF printers only.
254         if (job_params->render_flags & RENDER_FLAG_PORTRAIT_MODE) {
255             ippAddInteger(request, IPP_TAG_JOB, IPP_TAG_ENUM, "orientation-requested",
256                     IPP_PRINT_ORIENTATION_PORTRAIT);
257         }
258         if (job_params->render_flags & RENDER_FLAG_LANDSCAPE_MODE) {
259             ippAddInteger(request, IPP_TAG_JOB, IPP_TAG_ENUM, "orientation-requested",
260                     IPP_PRINT_ORIENTATION_LANDSCAPE);
261         }
262     } else {
263         switch (job_params->pcl_type) {
264             case PCLm:
265                 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
266                         PRINT_FORMAT_PCLM);
267                 LOGD("_fill_job: setting document-format: %s", PRINT_FORMAT_PCLM);
268                 if (is_ePCL_ipp_capable) {
269                     ippAddResolution(request, IPP_TAG_JOB, "pclm-source-resolution",
270                             IPP_RES_PER_INCH, job_params->pixel_units,
271                             job_params->pixel_units);
272                 }
273                 break;
274             case PCLPWG:
275                 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
276                         PRINT_FORMAT_PWG);
277                 LOGD("_fill_job: setting document-format: %s", PRINT_FORMAT_PWG);
278                 break;
279             default:
280                 LOGD("_fill_job: unrecognized pcl_type: %d", job_params->pcl_type);
281                 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL,
282                         PRINT_FORMAT_AUTO);
283                 break;
284         }
285 
286         if (is_ePCL_ipp_capable) {
287             ippAddBoolean(request, IPP_TAG_JOB, "margins-pre-applied", 1); // true
288         }
289     }
290 
291     // Add copies support if required and allowed
292     if (job_params->copies_supported && (strcmp(job_params->print_format, PRINT_FORMAT_PDF) == 0)) {
293         ippAddInteger(request, IPP_TAG_JOB, IPP_TAG_INTEGER, "copies", job_params->num_copies);
294     }
295 
296     // Add print quality if requested
297     if (job_params->print_quality) {
298         ippAddInteger(request, IPP_TAG_JOB, IPP_TAG_ENUM, "print-quality",
299                 job_params->print_quality);
300     }
301 
302     ippAddResolution(request, IPP_TAG_JOB, "printer-resolution", IPP_RES_PER_INCH,
303             job_params->pixel_units, job_params->pixel_units);
304     if (job_params->duplex == DUPLEX_MODE_BOOK) {
305         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_SIDES_TAG, NULL,
306                 IPP_SIDES_TWO_SIDED_LONG_EDGE);
307     } else if (job_params->duplex == DUPLEX_MODE_TABLET) {
308         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_SIDES_TAG, NULL,
309                 IPP_SIDES_TWO_SIDED_SHORT_EDGE);
310     } else {
311         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_SIDES_TAG, NULL,
312                 IPP_SIDES_ONE_SIDED);
313     }
314 
315     if (job_params->color_space == COLOR_SPACE_MONO) {
316         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_OUTPUT_MODE_TAG, NULL,
317                 IPP_OUTPUT_MODE_MONO);
318     } else {
319         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, IPP_OUTPUT_MODE_TAG, NULL,
320                 IPP_OUTPUT_MODE_COLOR);
321     }
322 
323     if (is_2_0_capable) {
324         // Not friendly to 1.1 devices.
325         if (job_params->media_tray != TRAY_SRC_AUTO_SELECT) {
326             if (job_params->media_tray == TRAY_SOURCE_PHOTO_TRAY) {
327                 col[++col_index] = ippNew();
328                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-source", NULL,
329                         "main-tray");
330             } else if (job_params->media_tray == TRAY_SOURCE_TRAY_1) {
331                 col[++col_index] = ippNew();
332                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-source", NULL,
333                         "main-tray");
334             }
335         }
336 
337         // MEDIA-Type is IPP 2.0 only
338         // put margins in with media-type
339         // Client-Error-Attribute-Or-Values-Not-Supported
340         col[++col_index] = ippNew();
341 
342         // set margins - if negative margins, set to full-bleed; otherwise set calculated values
343         if (job_params->borderless) {
344             LOGD("Setting Up BORDERLESS");
345             ippAddInteger(col[col_index], IPP_TAG_JOB, IPP_TAG_INTEGER, "media-bottom-margin", 0);
346             ippAddInteger(col[col_index], IPP_TAG_JOB, IPP_TAG_INTEGER, "media-top-margin", 0);
347             ippAddInteger(col[col_index], IPP_TAG_JOB, IPP_TAG_INTEGER, "media-left-margin", 0);
348             ippAddInteger(col[col_index], IPP_TAG_JOB, IPP_TAG_INTEGER, "media-right-margin", 0);
349         }
350 
351         switch (job_params->media_type) {
352             case MEDIA_PHOTO_GLOSSY:
353                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-type", NULL,
354                         "photographic-glossy");
355                 break;
356             case MEDIA_PHOTO:
357             case MEDIA_ADVANCED_PHOTO:
358             case MEDIA_PHOTO_MATTE:
359             case MEDIA_PREMIUM_PHOTO:
360             case MEDIA_OTHER_PHOTO:
361                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-type", NULL,
362                         "photographic");
363                 break;
364             default:
365                 ippAddString(col[col_index], IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-type", NULL,
366                         "stationery");
367                 break;
368         }
369 
370         float mediaWidth;
371         float mediaHeight;
372         const char *mediaSizeName = NULL;
373         _get_pwg_media_size(job_params->media_size, &mediaWidth, &mediaHeight, &mediaSizeName);
374         ipp_t *mediaSize = ippNew();
375 
376         if ((job_params->media_size_name) && (mediaSizeName != NULL)) {
377             ippAddString(mediaSize, IPP_TAG_JOB, IPP_TAG_KEYWORD, "media-size-name", NULL,
378                     mediaSizeName);
379         } else {
380             ippAddInteger(mediaSize, IPP_TAG_JOB, IPP_TAG_INTEGER, "x-dimension", (int) mediaWidth);
381             ippAddInteger(mediaSize, IPP_TAG_JOB, IPP_TAG_INTEGER, "y-dimension",
382                     (int) mediaHeight);
383         }
384         ippAddCollection(col[col_index], IPP_TAG_JOB, "media-size", mediaSize);
385 
386         // can either set media or media-col.
387         // if both sent, device should return client-error-bad-request
388         ippAddCollections(request, IPP_TAG_JOB, "media-col", col_index + 1, (const ipp_t **) col);
389         while (col_index >= 0) {
390             ippDelete(col[col_index--]);
391         }
392     } else {
393         ippAddString(request, IPP_TAG_JOB, IPP_TAG_KEYWORD, "media", NULL,
394                 mapDFMediaToIPPKeyword(job_params->media_size));
395     }
396 
397     LOGI("_fill_job (%d): request", ipp_op);
398     for (attrptr = ippFirstAttribute(request); attrptr; attrptr = ippNextAttribute(request)) {
399         print_attr(attrptr);
400     }
401 
402     return request;
403 }
404 
_validate_job(const ifc_print_job_t * this_p,wprint_job_params_t * job_params)405 static status_t  _validate_job(const ifc_print_job_t *this_p, wprint_job_params_t *job_params) {
406     LOGD("_validate_job: Enter");
407     status_t result = ERROR;
408     ipp_print_job_t *ipp_job;
409     ipp_t *response;
410     ipp_t *request = NULL;
411     ipp_status_t ipp_status;
412 
413     LOGD("_validate_job: ** validatePrintJob:  Entry");
414     do {
415         if (this_p == NULL) {
416             break;
417         }
418 
419         if (job_params == NULL) {
420             break;
421         }
422 
423         ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
424         if (ipp_job->http == NULL) {
425             break;
426         }
427 
428         ipp_job->useragent = NULL;
429         if ((job_params->useragent != NULL) && (strlen(job_params->useragent) > 0)) {
430             ipp_job->useragent = job_params->useragent;
431         }
432 
433         request = _fill_job(IPP_VALIDATE_JOB, ipp_job->printer_uri, job_params);
434 
435         if (ipp_job->useragent != NULL) {
436             httpSetDefaultField(ipp_job->http, HTTP_FIELD_USER_AGENT, ipp_job->useragent);
437         }
438         if ((response = ipp_doCupsRequest(ipp_job->http, request, ipp_job->http_resource,
439                 ipp_job->printer_uri))
440                 == NULL) {
441             ipp_status = cupsLastError();
442             LOGE("_validate_job:  validatePrintJob:  response is null:  ipp_status %d %s",
443                     ipp_status, ippErrorString(ipp_status));
444         } else {
445             ipp_status = cupsLastError();
446             LOGI("_validate_job: %s ipp_status %d  %x received:", ippOpString(IPP_VALIDATE_JOB),
447                     ipp_status, ipp_status);
448             ipp_attribute_t *attrptr;
449             for (attrptr = ippFirstAttribute(response); attrptr; attrptr = ippNextAttribute(
450                     response)) {
451                 print_attr(attrptr);
452             }
453 
454             ippDelete(response);
455         }
456 
457         LOGD("_validate_job : ipp_status: %d", ipp_status);
458         if (strncmp(ippErrorString(ipp_status), ippErrorString(IPP_OK),
459                 strlen(ippErrorString(IPP_OK))) == 0) {
460             result = OK;
461         } else {
462             result = ERROR;
463         }
464     } while (0);
465 
466     ippDelete(request);
467 
468     LOGD("_validate_job: ** validate_job result: %d", result);
469 
470     return result;
471 }
472 
_start_job(const ifc_print_job_t * this_p,const wprint_job_params_t * job_params)473 static status_t _start_job(const ifc_print_job_t *this_p, const wprint_job_params_t *job_params) {
474     LOGD("_start_job: Enter");
475     status_t result;
476     ipp_print_job_t *ipp_job;
477     ipp_t *request = NULL;
478     bool retry;
479     int failed_count = 0;
480 
481     LOGD("_start_job entry");
482     do {
483         retry = false;
484         if (this_p == NULL) {
485             LOGE("_start_job; this_p == NULL");
486             continue;
487         }
488 
489         ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
490 
491         ipp_job->useragent = NULL;
492         if ((job_params->useragent != NULL) && (strlen(job_params->useragent) > 0)) {
493             ipp_job->useragent = job_params->useragent;
494         }
495         request = _fill_job(IPP_PRINT_JOB, ipp_job->printer_uri, job_params);
496 
497         if (request == NULL) {
498             continue;
499         }
500 
501         if (ipp_job->useragent != NULL) {
502             httpSetDefaultField(ipp_job->http, HTTP_FIELD_USER_AGENT, ipp_job->useragent);
503         }
504         ipp_job->status = cupsSendRequest(ipp_job->http, request, ipp_job->http_resource, 0);
505         if (ipp_job->status != HTTP_CONTINUE) {
506             failed_count++;
507             if ((failed_count == 1) &&
508                     ((ipp_job->status == HTTP_ERROR) || (ipp_job->status >= HTTP_BAD_REQUEST))) {
509                 retry = true;
510                 LOGI("_start_job retry due to internal error");
511                 // We will retry for one of these failures since we could have just
512                 // lost our connection to the server and cups will not always attempt
513                 // a reconnect for us.
514                 ippDelete(request);
515                 continue;
516             }
517 
518             _cupsSetHTTPError(ipp_job->status);
519         }
520         ippDelete(request);
521         LOGI("_start_job httpPrint fd %d status %d ipp_status %d", ipp_job->http->fd,
522                 ipp_job->status, cupsLastError());
523 
524         result = ((ipp_job->status == HTTP_CONTINUE) ? OK : ERROR);
525     } while (retry);
526 
527     return result;
528 }
529 
_send_data(const ifc_print_job_t * this_p,const char * buffer,size_t length)530 static int _send_data(const ifc_print_job_t *this_p, const char *buffer, size_t length) {
531     ipp_print_job_t *ipp_job;
532     if (this_p == NULL) {
533         return ERROR;
534     }
535 
536     ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
537     if (ipp_job->http == NULL) {
538         return ERROR;
539     }
540 
541     if (ipp_job->status != HTTP_CONTINUE) {
542         return ERROR;
543     }
544 
545     if (length != 0) {
546         if (ipp_job->useragent != NULL) {
547             httpSetDefaultField(ipp_job->http, HTTP_FIELD_USER_AGENT, ipp_job->useragent);
548         }
549         ipp_job->status = cupsWriteRequestData(ipp_job->http, buffer, length);
550     }
551     return ((ipp_job->status == HTTP_CONTINUE) ? length : (int) ERROR);
552 }
553 
_end_job(const ifc_print_job_t * this_p)554 static status_t _end_job(const ifc_print_job_t *this_p) {
555     LOGD("_end_job: Enter");
556     status_t result = ERROR;
557     ipp_t *response;
558     ipp_attribute_t *attrptr;
559     int op = IPP_PRINT_JOB;
560     ipp_print_job_t *ipp_job;
561     int job_id = -1;
562 
563     char buffer[1024];
564 
565     if (this_p == NULL) {
566         return result;
567     }
568 
569     ipp_job = IMPL(ipp_print_job_t, ifc, this_p);
570 
571     if (ipp_job->http == NULL) {
572         return result;
573     }
574 
575     LOGD("_end_job: entry httpPrint %d", ipp_job->http->fd);
576 
577     if (ipp_job->useragent != NULL) {
578         httpSetDefaultField(ipp_job->http, HTTP_FIELD_USER_AGENT, ipp_job->useragent);
579     }
580     ipp_job->status = cupsWriteRequestData(ipp_job->http, buffer, 0);
581 
582     if (ipp_job->status != HTTP_CONTINUE) {
583         LOGE("Error: from cupsWriteRequestData http.fd %d:  status %d",
584                 ipp_job->http->fd, ipp_job->status);
585     } else {
586         result = OK;
587         LOGD("0 length Bytes sent, status %d", ipp_job->status);
588         response = cupsGetResponse(ipp_job->http, ipp_job->http_resource);
589 
590         if ((attrptr = ippFindAttribute(response, "job-id", IPP_TAG_INTEGER)) == NULL) {
591             LOGE("sent cupsGetResponse %s job id is null; received", ippOpString(op));
592         } else {
593             job_id = ippGetInteger(attrptr, 0);
594             LOGI("sent cupsGetResponse %s job_id %d; received", ippOpString(op), job_id);
595         }
596 
597         if (response != NULL) {
598             for (attrptr = ippFirstAttribute(response); attrptr; attrptr = ippNextAttribute(
599                     response)) {
600                 print_attr(attrptr);
601                 if (strcmp(ippGetName(attrptr), "job-state-reasons") == 0) {
602                     int i;
603                     for (i = 0; i < ippGetCount(attrptr); i++) {
604                         if (strcmp(ippGetString(attrptr, i, NULL), "job-canceled-at-device")
605                                 == 0) {
606                             result = CANCELLED;
607                             break;
608                         }
609                     }
610                 }
611             }
612             ippDelete(response);
613         }
614     }
615     LOGD("_end_job: exit status %d job_id %d", ipp_job->status, job_id);
616 
617     return result;
618 }