kopia lustrzana https://gitlab.com/sane-project/backends
110 wiersze
3.5 KiB
C
110 wiersze
3.5 KiB
C
/* sane - Scanner Access Now Easy.
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Copyright (C) 2019 Touboul Nathane
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Copyright (C) 2019 Thierry HUCHARD <thierry@ordissimo.com>
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This file is part of the SANE package.
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SANE is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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SANE is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with sane; see the file COPYING.
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If not, see <https://www.gnu.org/licenses/>.
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This file implements a SANE backend for eSCL scanners. */
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#define DEBUG_DECLARE_ONLY
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#include "../include/sane/config.h"
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#include "escl.h"
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#include <stdlib.h>
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#include <string.h>
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static size_t
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write_callback(void __sane_unused__*str,
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size_t __sane_unused__ size,
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size_t nmemb,
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void __sane_unused__ *userp)
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{
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return nmemb;
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}
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/**
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* \fn void escl_scanner(const ESCL_Device *device, char *result)
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* \brief Function that resets the scanner after each scan, using curl.
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* This function is called in the 'sane_cancel' function.
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*/
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void
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escl_delete(const ESCL_Device *device, char *uri)
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{
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CURL *curl_handle = NULL;
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long answer = 0;
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if (uri == NULL)
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return;
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curl_handle = curl_easy_init();
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if (curl_handle != NULL) {
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escl_curl_url(curl_handle, device, uri);
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curl_easy_setopt(curl_handle, CURLOPT_CUSTOMREQUEST, "DELETE");
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if (curl_easy_perform(curl_handle) == CURLE_OK) {
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curl_easy_getinfo(curl_handle, CURLINFO_RESPONSE_CODE, &answer);
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return;
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}
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curl_easy_cleanup(curl_handle);
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}
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}
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/**
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* \fn void escl_scanner(const ESCL_Device *device, char *result)
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* \brief Function that resets the scanner after each scan, using curl.
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* This function is called in the 'sane_cancel' function.
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*/
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void
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escl_scanner(const ESCL_Device *device, char *scanJob, char *result, SANE_Bool status)
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{
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CURL *curl_handle = NULL;
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const char *scan_jobs = "/eSCL/";
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const char *scanner_start = "/NextDocument";
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char scan_cmd[PATH_MAX] = { 0 };
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int i = 0;
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long answer = 0;
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if (device == NULL || result == NULL)
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return;
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CURL_CALL:
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curl_handle = curl_easy_init();
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if (curl_handle != NULL) {
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snprintf(scan_cmd, sizeof(scan_cmd), "%s%s%s%s",
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scan_jobs, scanJob, result, scanner_start);
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escl_curl_url(curl_handle, device, scan_cmd);
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curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_callback);
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curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1L);
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curl_easy_setopt(curl_handle, CURLOPT_MAXREDIRS, 3L);
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if (curl_easy_perform(curl_handle) == CURLE_OK) {
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curl_easy_getinfo(curl_handle, CURLINFO_RESPONSE_CODE, &answer);
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i++;
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if (i >= 15) return;
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}
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curl_easy_cleanup(curl_handle);
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char* end = strrchr(scan_cmd, '/');
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*end = 0;
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escl_delete(device, scan_cmd);
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if (status) {
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if (SANE_STATUS_GOOD != escl_status(device,
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PLATEN,
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NULL,
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NULL))
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goto CURL_CALL;
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}
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}
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}
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