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Diffstat (limited to 'bjnp.c')
| -rw-r--r-- | bjnp.c | 436 |
1 files changed, 436 insertions, 0 deletions
@@ -0,0 +1,436 @@ +/* + * bjnp backend for the Common UNIX Printing System (CUPS). + * Copyright 2008-2014 by Louis Lagendijk + * + * Based on cups AppSocket sources + * Copyright 2007 by Apple Inc. + * Copyright 1997-2007 by Easy Software Products, all rights reserved. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +/* + * Include necessary headers. + */ + +#include <stdio.h> +#include <stdarg.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <signal.h> +#include <errno.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 /* WIN32 */ +#include "bjnp.h" + + +/* + * 'main()' - Send a file to the printer or server. + * + * Usage: + * + * printer-uri job-id user title copies options [file] + */ + +int /* O - Exit status */ +main(int argc, /* I - Number of command-line arguments */ + /* (6 or 7) */ + char *argv[]) /* I - Command-line arguments */ +{ + char method[255]; /* Method in URI */ + char hostname[1024]; /* Hostname */ + char username[255]; /* Username info (not used) */ + char resource[1024]; /* Resource info */ + char *options; /* Pointer to options in device URI*/ + char *name; /* Name of option in device URI*/ + char *value; /* Value of option in device URI*/ + char sep; /* Option separator */ + int print_fd; /* Print file */ + int copies; /* Number of copies to print */ + time_t start_time; /* Time of first connect */ + int recoverable; /* Recoverable error shown? */ + int contimeout; /* Connection timeout */ + int port; /* Port number */ + char portname[255]; /* Port name */ + char family[BJNP_FAMILY_MAX]; /* address family */ + int i; /* loop variable */ + int bjnp_error; /* printer error */ + http_addrlist_t *addrlist; /* Address list */ + printer_t *printer; /* Connected printer */ + char addrname[256]; /* Address name */ + ssize_t tbytes; /* Total number of bytes written */ + char *debug_level = NULL; /* debug level to be applied */ + char *debug_file_name = NULL; /* filename for own debugging */ +#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) + struct sigaction action; /* Actions for POSIX signals */ +#endif /* HAVE_SIGACTION && !HAVE_SIGSET */ + + + /* + * Make sure status messages are not buffered... + */ + + setbuf(stderr, NULL); + + /* + * Ignore SIGPIPE signals... + */ + +#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 /* HAVE_SIGSET */ + + /* + * Check command-line... + */ + + if (argc == 1) { + struct printer_list printers[BJNP_PRINTERS_MAX]; + int num_printers; + int i; + + /* + * get debug level for printer discovery based on environment settings + */ + + debug_level = getenv("BJNP_DEBUG_LEVEL"); + debug_file_name = getenv("BJNP_DEBUG_FILE"); + + bjnp_set_debug_level(debug_level, debug_file_name); + + if ((num_printers = bjnp_discover_printers(printers)) == 0) { + puts("network bjnp \"Unknown\" \"Canon network printer\""); + } else { + for (i = 0; i < num_printers; i++) { + printf("network bjnp://%s:%u \"%s\" \"%s %s\" \"%s\"\n", + printers[i].hostname, + printers[i].port, + printers[i].model, + printers[i].model, + printers[i].hostname, + printers[i].IEEE1284_id); + } + } + + return (CUPS_BACKEND_OK); + } else if (argc < 6 || argc > 7) { + fprintf(stderr, "cups BJNP backend - version %s\n", VERSION); + _cupsLangPrintf(stderr, + _("Usage: %s job-id user title copies options [file]\n"), + argv[0]); + return CUPS_BACKEND_FAILED; + } + + /* + * If we have 7 arguments, print the file named on the command-line. + * Otherwise, send stdin instead... + */ + + if (argc == 6) { + print_fd = 0; + copies = 1; + } else { + /* + * Try to open the print file... + */ + + if ((print_fd = open(argv[6], O_RDONLY)) < 0) { + perror("ERROR: unable to open print file"); + return CUPS_BACKEND_FAILED; + } + + copies = atoi(argv[4]); + } + + /* + * Extract the hostname and port number from the URI... + */ + + httpSeparateURI(HTTP_URI_CODING_ALL, cupsBackendDeviceURI(argv), + method, sizeof(method), username, sizeof(username), + hostname, sizeof(hostname), &port, + resource, sizeof(resource)); + + if (port == 0) { + port = BJNP_PORT_PRINT; + } + + /* + * Get options from the URI, if any... + */ + + contimeout = 7 * 24 * 60 * 60; + + if ((options = strchr(resource, '?')) != NULL) { + /* + * Yup, terminate the device name string and move to the first + * character of the options... + */ + + *options++ = '\0'; + + /* + * Parse options... + */ + + while (*options) { + /* + * Get the name... + */ + + name = options; + + while (*options && *options != '=' && *options != '+' + && *options != '&') { + options++; + } + + if ((sep = *options) != '\0') { + *options++ = '\0'; + } + + if (sep == '=') { + /* + * Get the value... + */ + + value = options; + + while (*options && *options != '+' && *options != '&') { + options++; + } + + if (*options) { + *options++ = '\0'; + } + } else { + value = (char *) ""; + } + + /* + * Process the option... + */ + + if (!strcasecmp(name, "contimeout")) { + /* + * Set the connection timeout... + */ + + if (atoi(value) > 0) { + contimeout = atoi(value); + } + } else if (!strcasecmp(name, "debuglevel")) { + debug_level = value; + } else if (!strcasecmp(name, "debugfile")) { + debug_file_name = value; + } + } + } + + bjnp_set_debug_level(debug_level, debug_file_name); + + /* + * print command line arguments to debug log + * We cannot do that sooner, as we first need to initialize + * the debug system + */ + + for (i = 0; i < argc; i++) { + bjnp_debug(LOG_DEBUG, "cups-bjnp: argv[%d] = %s\n", i, argv[i]); + } + + /* + * Then try to connect to the remote host... + */ + + 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); + + printer = NULL; + + while (1) { + if (((printer = bjnp_printer_connect(printer, addrlist, argv[2], argv[3], &bjnp_error)) == NULL) || + bjnp_error != 0) { + + if (getenv("CLASS") != NULL) { + /* + * If the CLASS environment variable is set, the job was submitted + * to a class and not to a specific queue. In this case, we want + * to abort immediately so that the job can be requeued on the next + * available printer in the class. + */ + + _cupsLangPuts(stderr, + _ + ("INFO: Unable to contact printer, queuing on next " + "printer in class...\n")); + + /* + * Sleep 5 seconds to keep the job from requeuing too rapidly... + */ + + sleep(5); + + return CUPS_BACKEND_FAILED; + } + + if (contimeout && (time(NULL) - start_time) > contimeout) { + _cupsLangPuts(stderr, + _("ERROR: Printer not ready to print!\n")); + return CUPS_BACKEND_FAILED; + } + + recoverable = 1; + + if (bjnp_error != 0) { + if (bjnp_error & BJNP_PRINTER_BUSY) { + _cupsLangPrintf(stderr, + _("WARNING: recoverable: Network printer \'%s\' is busy, "), + hostname); + } + + if (bjnp_error & BJNP_NO_INK) { + _cupsLangPrintf(stderr, + _("WARNING: recoverable: Network printer \'%s\' is out of ink, "), + hostname); + } + + if (bjnp_error & BJNP_NO_PAPER) { + _cupsLangPrintf(stderr, + _("WARNING: recoverable: Network host \'%s\' is out of paper, "), + hostname); + } + + _cupsLangPrintf(stderr, + _("will retry in 30 seconds...\n")); + sleep(30); + + } else { + _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) { + /* + * If we've shown a recoverable error make sure the printer proxies + * have a chance to see the recovered message. Not pretty but + * necessary for now... + */ + + fputs("INFO: recovered: \n", stderr); + sleep(5); + } + + fputs("STATE: -connecting-to-device\n", stderr); + _cupsLangPrintf(stderr, _("INFO: Connected to %s...\n"), hostname); + + get_printer_address_info(printer, addrname, &port, family); + fprintf(stderr, "DEBUG: Connected to [%s]:%d (%s)...\n", + addrname, port, family); + + /* + * Print everything... + */ + + 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 = bjnp_backendRunLoop(print_fd, printer); + + if (print_fd != 0 && tbytes >= 0) { +#ifdef HAVE_LONG_LONG + _cupsLangPrintf(stderr, + _("INFO: Sent print file, %lld bytes...\n"), + CUPS_LLCAST tbytes); +#else + _cupsLangPrintf(stderr, + _("INFO: Sent print file, %ld bytes...\n"), + CUPS_LLCAST tbytes); +#endif /* HAVE_LONG_LONG */ + } + } + + /* + * tell printer to finsh the print job and to close the connection + */ + bjnp_close_printer(printer); + printer = NULL; + httpAddrFreeList(addrlist); + addrlist = NULL; + + /* + * Close the input file and return... + */ + + if (print_fd != 0) { + close(print_fd); + } + + /* + * delay a bit as otherwise next job may hang (reported by Zedonet for PIXMA MX7600) + */ + + sleep(15); + + if (tbytes >= 0) { + _cupsLangPuts(stderr, _("INFO: Ready to print.\n")); + } + + return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK); +} |