all: Start moving common code out into a separate library.
The goal is to avoid code duplication. There's a lot of similar functionality remaining.master
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1336a7feda
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293241b39f
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/*
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* CUPS Backend common code
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*
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* (c) 2013 Solomon Peachy <pizza@shaftnet.org>
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*
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* The latest version of this program can be found at:
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*
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* http://git.shaftnet.org/git/gitweb.cgi?p=selphy_print.git
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*
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* This program is free software; you can redistribute it and/or modify it
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* under 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 option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* [http://www.gnu.org/licenses/gpl-3.0.html]
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*
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*/
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#include <libusb-1.0/libusb.h>
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#define STR_LEN_MAX 64
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#define DEBUG( ... ) fprintf(stderr, "DEBUG: " __VA_ARGS__ )
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#define INFO( ... ) fprintf(stderr, "INFO: " __VA_ARGS__ )
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#define ERROR( ... ) do { fprintf(stderr, "ERROR: " __VA_ARGS__ ); sleep(1); } while (0)
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#define DEBUG( ... ) fprintf(stderr, "DEBUG: " __VA_ARGS__ )
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#define INFO( ... ) fprintf(stderr, "INFO: " __VA_ARGS__ )
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#define ERROR( ... ) do { fprintf(stderr, "ERROR: " __VA_ARGS__ ); sleep(1); } while (0)
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#if (__BYTE_ORDER == __LITTLE_ENDIAN)
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#define le32_to_cpu(__x) __x
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#define le16_to_cpu(__x) __x
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#define be16_to_cpu(__x) ntohs(__x)
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#define be32_to_cpu(__x) ntohl(__x)
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#else
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#define le32_to_cpu(x) \
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({ \
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uint32_t __x = (x); \
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((uint32_t)( \
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(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
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(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
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(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
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(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
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})
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#define le16_to_cpu(x) \
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({ \
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uint16_t __x = (x); \
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((uint16_t)( \
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(((uint16_t)(__x) & (uint16_t)0x00ff) << 8) | \
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(((uint16_t)(__x) & (uint16_t)0xff00) >> 8) | \
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})
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#define be32_to_cpu(__x) __x
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#define be16_to_cpu(__x) __x
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#endif
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#define ID_BUF_SIZE 2048
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static char *get_device_id(struct libusb_device_handle *dev)
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{
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int length;
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int claimed = 0;
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int iface = 0;
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char *buf = malloc(ID_BUF_SIZE + 1);
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claimed = libusb_kernel_driver_active(dev, iface);
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if (claimed)
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libusb_detach_kernel_driver(dev, iface);
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libusb_claim_interface(dev, iface);
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if (libusb_control_transfer(dev,
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LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_ENDPOINT_IN |
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LIBUSB_RECIPIENT_INTERFACE,
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0, 0,
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(iface << 8),
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(unsigned char *)buf, ID_BUF_SIZE, 5000) < 0)
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{
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*buf = '\0';
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goto done;
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}
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/* length is the first two bytes, MSB first */
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length = (((unsigned)buf[0] & 255) << 8) |
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((unsigned)buf[1] & 255);
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/* Sanity checks */
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if (length > ID_BUF_SIZE || length < 14)
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length = (((unsigned)buf[1] & 255) << 8) |
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((unsigned)buf[0] & 255);
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if (length > ID_BUF_SIZE)
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length = ID_BUF_SIZE;
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if (length < 14) {
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*buf = '\0';
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goto done;
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}
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/* Move, and terminate */
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memmove(buf, buf + 2, length);
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buf[length] = '\0';
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done:
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libusb_release_interface(dev, iface);
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if (claimed)
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libusb_attach_kernel_driver(dev, iface);
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return buf;
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}
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static int send_data(struct libusb_device_handle *dev, uint8_t endp,
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uint8_t *buf, uint16_t len)
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{
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int num;
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int ret = libusb_bulk_transfer(dev, endp,
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buf, len,
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&num, 10000);
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if (ret < 0) {
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ERROR("Failure to send data to printer (libusb error %d: (%d/%d to 0x%02x))\n", ret, num, len, endp);
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return ret;
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}
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return 0;
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}
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static int terminate = 0;
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void sigterm_handler(int signum) {
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terminate = 1;
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INFO("Job Cancelled");
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}
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