plugin_pdf.c revision 3bf66744d61d18c66d46f2608de0467ad3df0268 
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 <stdlib.h>
20#include <stdio.h>
21#include <unistd.h>
22#include <fcntl.h>
23#include <errno.h>
24#include "ifc_print_job.h"
25#include "wprint_debug.h"
26
27#define TAG "plugin_pdf"
28#define BUFF_SIZE 8192
29
30extern int g_API_version;
31
32typedef struct {
33    const ifc_wprint_t *wprint_ifc;
34    const ifc_print_job_t *print_ifc;
35} plugin_data_t;
36
37static const char *_mime_types[] = {
38        MIME_TYPE_PDF,
39        NULL};
40
41static const char *_print_formats[] = {
42        PRINT_FORMAT_PDF,
43        NULL};
44
45static const char **_get_mime_types(void) {
46    return _mime_types;
47}
48
49static const char **_get_print_formats(void) {
50    return _print_formats;
51}
52
53static int _start_job(wJob_t job_handle, const ifc_wprint_t *wprint_ifc_p,
54        const ifc_print_job_t *print_job_ifc_p,
55        wprint_job_params_t *job_params) {
56    plugin_data_t *priv;
57    if (job_params == NULL) return ERROR;
58
59    job_params->plugin_data = NULL;
60    if ((wprint_ifc_p == NULL) || (print_job_ifc_p == NULL)) return ERROR;
61
62    priv = (plugin_data_t *) malloc(sizeof(plugin_data_t));
63    priv->wprint_ifc = (ifc_wprint_t *) wprint_ifc_p;
64    priv->print_ifc = (ifc_print_job_t *) print_job_ifc_p;
65
66    job_params->plugin_data = (void *) priv;
67    return OK;
68}
69
70static int _print_page(wprint_job_params_t *job_params, const char *mime_type,
71        const char *pathname) {
72    plugin_data_t *priv;
73    int fd;
74    int result = OK;
75    int rbytes, wbytes, nbytes = 0;
76    char *buff;
77
78    if (job_params == NULL) return ERROR;
79
80    priv = (plugin_data_t *) job_params->plugin_data;
81
82    if (priv == NULL) return ERROR;
83
84    //  open the PDF file and dump it to the socket
85    if (pathname && strlen(pathname)) {
86        buff = malloc(BUFF_SIZE);
87        if (buff == NULL) {
88            return ERROR;
89        }
90
91        fd = open(pathname, O_RDONLY);
92        if (fd != ERROR) {
93            rbytes = read(fd, buff, BUFF_SIZE);
94
95            while ((rbytes > 0) && !job_params->cancelled) {
96                wbytes = priv->print_ifc->send_data(priv->print_ifc, buff, rbytes);
97                if (wbytes == rbytes) {
98                    nbytes += wbytes;
99                    rbytes = read(fd, buff, BUFF_SIZE);
100                } else {
101                    LOGE("ERROR: write() failed, %s", strerror(errno));
102                    result = ERROR;
103                    break;
104                }
105            }
106            LOGI("dumped %d bytes of %s to printer", nbytes, pathname);
107            close(fd);
108        }
109
110        free(buff);
111    }
112    if ((job_params->page_range != NULL) && (strcmp(job_params->page_range, "") != 0)) {
113        remove(pathname);
114    }
115    return result;
116}
117
118static int _end_job(wprint_job_params_t *job_params) {
119    if (job_params != NULL) {
120        if (job_params->plugin_data != NULL) {
121            free(job_params->plugin_data);
122        }
123    }
124    return OK;
125}
126
127wprint_plugin_t *libwprintplugin_pdf_reg(void) {
128    static const wprint_plugin_t _pdf_plugin = {.version = WPRINT_PLUGIN_VERSION(0),
129            .priority = PRIORITY_PASSTHRU, .get_mime_types = _get_mime_types,
130            .get_print_formats = _get_print_formats, .start_job = _start_job,
131            .print_page = _print_page, .print_blank_page = NULL, .end_job = _end_job,};
132    return ((wprint_plugin_t *) &_pdf_plugin);
133}