#include <cups/http-private.h>
#include "backend-private.h"
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef WIN32
# include <winsock.h>
#else
# include <unistd.h>
# include <fcntl.h>
# include <sys/socket.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <netdb.h>
#endif
static void side_cb(int print_fd, int device_fd, int use_bc);
static int wait_bc(int device_fd, int secs);
int
main(int argc,
char *argv[])
{
char method[255],
hostname[1024],
username[255],
resource[1024],
*options,
*name,
*value,
sep;
int print_fd;
int copies;
time_t start_time;
int recoverable;
int contimeout;
int waiteof;
int port;
char portname[255];
int delay;
int device_fd;
int error;
http_addrlist_t *addrlist,
*addr;
char addrname[256];
ssize_t tbytes;
#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
struct sigaction action;
#endif
setbuf(stderr, NULL);
#ifdef HAVE_SIGSET
sigset(SIGPIPE, SIG_IGN);
#elif defined(HAVE_SIGACTION)
memset(&action, 0, sizeof(action));
action.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &action, NULL);
#else
signal(SIGPIPE, SIG_IGN);
#endif
if (argc == 1)
{
puts("network socket \"Unknown\" \"AppSocket/HP JetDirect\"");
return (CUPS_BACKEND_OK);
}
else if (argc < 6 || argc > 7)
{
_cupsLangPrintf(stderr,
_("Usage: %s job-id user title copies options [file]\n"),
argv[0]);
return (CUPS_BACKEND_FAILED);
}
if (argc == 6)
{
print_fd = 0;
copies = 1;
}
else
{
if ((print_fd = open(argv[6], O_RDONLY)) < 0)
{
perror("ERROR: unable to open print file");
return (CUPS_BACKEND_FAILED);
}
copies = atoi(argv[4]);
}
httpSeparateURI(HTTP_URI_CODING_ALL, cupsBackendDeviceURI(argv),
method, sizeof(method), username, sizeof(username),
hostname, sizeof(hostname), &port,
resource, sizeof(resource));
if (port == 0)
port = 9100;
waiteof = 1;
contimeout = 7 * 24 * 60 * 60;
if ((options = strchr(resource, '?')) != NULL)
{
*options++ = '\0';
while (*options)
{
name = options;
while (*options && *options != '=' && *options != '+' && *options != '&')
options ++;
if ((sep = *options) != '\0')
*options++ = '\0';
if (sep == '=')
{
value = options;
while (*options && *options != '+' && *options != '&')
options ++;
if (*options)
*options++ = '\0';
}
else
value = (char *)"";
if (!strcasecmp(name, "waiteof"))
{
waiteof = !value[0] || !strcasecmp(value, "on") ||
!strcasecmp(value, "yes") || !strcasecmp(value, "true");
}
else if (!strcasecmp(name, "contimeout"))
{
if (atoi(value) > 0)
contimeout = atoi(value);
}
}
}
recoverable = 0;
start_time = time(NULL);
sprintf(portname, "%d", port);
if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL)
{
_cupsLangPrintf(stderr, _("ERROR: Unable to locate printer \'%s\'!\n"),
hostname);
return (CUPS_BACKEND_STOP);
}
_cupsLangPrintf(stderr,
_("INFO: Attempting to connect to host %s on port %d\n"),
hostname, port);
fputs("STATE: +connecting-to-device\n", stderr);
for (delay = 5;;)
{
if ((addr = httpAddrConnect(addrlist, &device_fd)) == NULL)
{
error = errno;
device_fd = -1;
if (getenv("CLASS") != NULL)
{
_cupsLangPuts(stderr,
_("INFO: Unable to contact printer, queuing on next "
"printer in class...\n"));
sleep(5);
return (CUPS_BACKEND_FAILED);
}
if (error == ECONNREFUSED || error == EHOSTDOWN ||
error == EHOSTUNREACH)
{
if (contimeout && (time(NULL) - start_time) > contimeout)
{
_cupsLangPuts(stderr, _("ERROR: Printer not responding!\n"));
return (CUPS_BACKEND_FAILED);
}
recoverable = 1;
_cupsLangPrintf(stderr,
_("WARNING: recoverable: Network host \'%s\' is busy; "
"will retry in %d seconds...\n"),
hostname, delay);
sleep(delay);
if (delay < 30)
delay += 5;
}
else
{
recoverable = 1;
_cupsLangPrintf(stderr, "DEBUG: Connection error: %s\n",
strerror(errno));
_cupsLangPuts(stderr,
_("ERROR: recoverable: Unable to connect to printer; "
"will retry in 30 seconds...\n"));
sleep(30);
}
}
else
break;
}
if (recoverable)
{
fputs("INFO: recovered: \n", stderr);
sleep(5);
}
fputs("STATE: -connecting-to-device\n", stderr);
_cupsLangPrintf(stderr, _("INFO: Connected to %s...\n"), hostname);
#ifdef AF_INET6
if (addr->addr.addr.sa_family == AF_INET6)
fprintf(stderr, "DEBUG: Connected to [%s]:%d (IPv6)...\n",
httpAddrString(&addr->addr, addrname, sizeof(addrname)),
ntohs(addr->addr.ipv6.sin6_port));
else
#endif
if (addr->addr.addr.sa_family == AF_INET)
fprintf(stderr, "DEBUG: Connected to %s:%d (IPv4)...\n",
httpAddrString(&addr->addr, addrname, sizeof(addrname)),
ntohs(addr->addr.ipv4.sin_port));
tbytes = 0;
while (copies > 0 && tbytes >= 0)
{
copies --;
if (print_fd != 0)
{
fputs("PAGE: 1 1\n", stderr);
lseek(print_fd, 0, SEEK_SET);
}
tbytes = backendRunLoop(print_fd, device_fd, 1, side_cb);
if (print_fd != 0 && tbytes >= 0)
_cupsLangPrintf(stderr,
#ifdef HAVE_LONG_LONG
_("INFO: Sent print file, %lld bytes...\n"),
#else
_("INFO: Sent print file, %ld bytes...\n"),
#endif
CUPS_LLCAST tbytes);
}
while (wait_bc(device_fd, 5) > 0);
if (waiteof)
{
_cupsLangPuts(stderr,
_("INFO: Print file sent, waiting for printer to finish...\n"));
shutdown(device_fd, 1);
while (wait_bc(device_fd, 90) > 0);
}
close(device_fd);
httpAddrFreeList(addrlist);
if (print_fd != 0)
close(print_fd);
if (tbytes >= 0)
_cupsLangPuts(stderr, _("INFO: Ready to print.\n"));
return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK);
}
static void
side_cb(int print_fd,
int device_fd,
int use_bc)
{
cups_sc_command_t command;
cups_sc_status_t status;
char data[2048];
int datalen;
const char *device_id;
datalen = sizeof(data);
if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0))
{
_cupsLangPuts(stderr, _("WARNING: Failed to read side-channel request!\n"));
return;
}
switch (command)
{
case CUPS_SC_CMD_DRAIN_OUTPUT :
if (backendDrainOutput(print_fd, device_fd))
status = CUPS_SC_STATUS_IO_ERROR;
else
status = CUPS_SC_STATUS_OK;
datalen = 0;
break;
case CUPS_SC_CMD_GET_BIDI :
data[0] = use_bc;
datalen = 1;
break;
case CUPS_SC_CMD_GET_DEVICE_ID :
if ((device_id = getenv("1284DEVICEID")) != NULL)
{
strlcpy(data, device_id, sizeof(data));
datalen = (int)strlen(data);
break;
}
default :
status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
datalen = 0;
break;
}
cupsSideChannelWrite(command, status, data, datalen, 1.0);
}
static int
wait_bc(int device_fd,
int secs)
{
struct timeval timeout;
fd_set input;
ssize_t bytes;
char buffer[1024];
timeout.tv_sec = secs;
timeout.tv_usec = 0;
FD_ZERO(&input);
FD_SET(device_fd, &input);
if (select(device_fd + 1, &input, NULL, NULL, &timeout) > 0)
{
if ((bytes = read(device_fd, buffer, sizeof(buffer))) > 0)
{
fprintf(stderr, "DEBUG: Received %d bytes of back-channel data!\n",
(int)bytes);
cupsBackChannelWrite(buffer, bytes, 1.0);
}
return (bytes);
}
else
return (-1);
}