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bdb5a5c3 | 1 | /* |
2 | * "$Id$" | |
3 | * | |
ec1bf980 | 4 | * LIBUSB interface code for CUPS. |
bdb5a5c3 | 5 | * |
5d86877b | 6 | * Copyright 2007-2013 by Apple Inc. |
bdb5a5c3 | 7 | * |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Apple Inc. and are protected by Federal copyright | |
10 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
11 | * which should have been included with this file. If this file is | |
12 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
13 | * | |
14 | * Contents: | |
15 | * | |
779ec102 | 16 | * list_devices() - List the available printers. |
137fa46b | 17 | * print_device() - Print a file to a USB device. |
18 | * close_device() - Close the connection to the USB printer. | |
19 | * find_device() - Find or enumerate USB printers. | |
20 | * get_device_id() - Get the IEEE-1284 device ID for the printer. | |
21 | * list_cb() - List USB printers for discovery. | |
22 | * make_device_uri() - Create a device URI for a USB printer. | |
23 | * open_device() - Open a connection to the USB printer. | |
24 | * print_cb() - Find a USB printer for printing. | |
2fa42ed2 | 25 | * printer_class_soft_reset()' - Do the soft reset request specific to |
26 | * printers | |
27 | * quirks() - Get the known quirks of a given printer model | |
137fa46b | 28 | * read_thread() - Thread to read the backchannel data on. |
29 | * sidechannel_thread() - Handle side-channel requests. | |
30 | * soft_reset() - Send a soft reset to the device. | |
bdb5a5c3 | 31 | */ |
32 | ||
33 | /* | |
34 | * Include necessary headers... | |
35 | */ | |
36 | ||
ec1bf980 | 37 | #include <libusb.h> |
2c7e4123 | 38 | #include <cups/cups-private.h> |
137fa46b | 39 | #include <pthread.h> |
40 | #include <sys/select.h> | |
41 | #include <sys/types.h> | |
42 | #include <sys/stat.h> | |
43 | #include <sys/time.h> | |
44 | #include <unistd.h> | |
bdb5a5c3 | 45 | |
46 | ||
ec1bf980 | 47 | /* |
137fa46b | 48 | * WAIT_EOF_DELAY is number of seconds we'll wait for responses from |
49 | * the printer after we've finished sending all the data | |
ec1bf980 | 50 | */ |
51 | ||
137fa46b | 52 | #define WAIT_EOF 0 |
53 | #define WAIT_EOF_DELAY 7 | |
54 | #define WAIT_SIDE_DELAY 3 | |
55 | #define DEFAULT_TIMEOUT 5000L | |
ec1bf980 | 56 | |
57 | ||
bdb5a5c3 | 58 | /* |
59 | * Local types... | |
60 | */ | |
61 | ||
62 | typedef struct usb_printer_s /**** USB Printer Data ****/ | |
63 | { | |
ec1bf980 | 64 | struct libusb_device *device; /* Device info */ |
bdb5a5c3 | 65 | int conf, /* Configuration */ |
2fa42ed2 | 66 | origconf, /* Original configuration */ |
bdb5a5c3 | 67 | iface, /* Interface */ |
68 | altset, /* Alternate setting */ | |
69 | write_endp, /* Write endpoint */ | |
2fa42ed2 | 70 | read_endp, /* Read endpoint */ |
137fa46b | 71 | protocol, /* Protocol: 1 = Uni-di, 2 = Bi-di. */ |
2fa42ed2 | 72 | usblp_attached, /* "usblp" kernel module attached? */ |
8fa16503 | 73 | reset_after_job; /* Set to 1 by print_device() */ |
2fa42ed2 | 74 | unsigned int quirks; /* Quirks flags */ |
ec1bf980 | 75 | struct libusb_device_handle *handle; /* Open handle to device */ |
bdb5a5c3 | 76 | } usb_printer_t; |
77 | ||
a9800876 | 78 | typedef int (*usb_cb_t)(usb_printer_t *, const char *, const char *, |
79 | const void *); | |
bdb5a5c3 | 80 | |
137fa46b | 81 | typedef struct usb_globals_s |
82 | { | |
83 | usb_printer_t *printer; /* Printer */ | |
84 | ||
85 | pthread_mutex_t read_thread_mutex; | |
86 | pthread_cond_t read_thread_cond; | |
87 | int read_thread_stop; | |
88 | int read_thread_done; | |
89 | ||
90 | pthread_mutex_t readwrite_lock_mutex; | |
91 | pthread_cond_t readwrite_lock_cond; | |
92 | int readwrite_lock; | |
93 | ||
94 | int print_fd; /* File descriptor to print */ | |
95 | ssize_t print_bytes; /* Print bytes read */ | |
96 | ||
97 | int wait_eof; | |
98 | int drain_output; /* Drain all pending output */ | |
99 | int bidi_flag; /* 0=unidirectional, 1=bidirectional */ | |
100 | ||
101 | pthread_mutex_t sidechannel_thread_mutex; | |
102 | pthread_cond_t sidechannel_thread_cond; | |
103 | int sidechannel_thread_stop; | |
104 | int sidechannel_thread_done; | |
105 | } usb_globals_t; | |
106 | ||
2fa42ed2 | 107 | /* |
108 | * Quirks: various printer quirks are handled by this table & its flags. | |
109 | * | |
110 | * This is copied from the usblp kernel module. So we can easily copy and paste | |
111 | * new quirks from the module. | |
112 | */ | |
113 | ||
114 | struct quirk_printer_struct { | |
115 | int vendorId; | |
116 | int productId; | |
117 | unsigned int quirks; | |
118 | }; | |
119 | ||
120 | #define USBLP_QUIRK_BIDIR 0x1 /* reports bidir but requires | |
121 | unidirectional mode (no INs/reads) */ | |
122 | #define USBLP_QUIRK_USB_INIT 0x2 /* needs vendor USB init string */ | |
123 | #define USBLP_QUIRK_BAD_CLASS 0x4 /* descriptor uses vendor-specific | |
124 | Class or SubClass */ | |
cff2b915 | 125 | #define USBLP_QUIRK_BLACKLIST 0x8 /* these printers do not conform to the USB print spec */ |
8fa16503 | 126 | #define USBLP_QUIRK_RESET 0x4000 /* After printing do a reset |
127 | for clean-up */ | |
2fa42ed2 | 128 | #define USBLP_QUIRK_NO_REATTACH 0x8000 /* After printing we cannot re-attach |
129 | the usblp kernel module */ | |
130 | ||
131 | static const struct quirk_printer_struct quirk_printers[] = { | |
132 | { 0x03f0, 0x0004, USBLP_QUIRK_BIDIR }, /* HP DeskJet 895C */ | |
133 | { 0x03f0, 0x0104, USBLP_QUIRK_BIDIR }, /* HP DeskJet 880C */ | |
134 | { 0x03f0, 0x0204, USBLP_QUIRK_BIDIR }, /* HP DeskJet 815C */ | |
135 | { 0x03f0, 0x0304, USBLP_QUIRK_BIDIR }, /* HP DeskJet 810C/812C */ | |
136 | { 0x03f0, 0x0404, USBLP_QUIRK_BIDIR }, /* HP DeskJet 830C */ | |
137 | { 0x03f0, 0x0504, USBLP_QUIRK_BIDIR }, /* HP DeskJet 885C */ | |
138 | { 0x03f0, 0x0604, USBLP_QUIRK_BIDIR }, /* HP DeskJet 840C */ | |
139 | { 0x03f0, 0x0804, USBLP_QUIRK_BIDIR }, /* HP DeskJet 816C */ | |
140 | { 0x03f0, 0x1104, USBLP_QUIRK_BIDIR }, /* HP Deskjet 959C */ | |
141 | { 0x0409, 0xefbe, USBLP_QUIRK_BIDIR }, /* NEC Picty900 (HP OEM) */ | |
142 | { 0x0409, 0xbef4, USBLP_QUIRK_BIDIR }, /* NEC Picty760 (HP OEM) */ | |
143 | { 0x0409, 0xf0be, USBLP_QUIRK_BIDIR }, /* NEC Picty920 (HP OEM) */ | |
144 | { 0x0409, 0xf1be, USBLP_QUIRK_BIDIR }, /* NEC Picty800 (HP OEM) */ | |
145 | { 0x0482, 0x0010, USBLP_QUIRK_BIDIR }, /* Kyocera Mita FS 820, | |
146 | by zut <kernel@zut.de> */ | |
8fa16503 | 147 | { 0x04a9, 0x10a2, USBLP_QUIRK_BIDIR }, /* Canon, Inc. PIXMA iP4200 |
148 | Printer, http://www.cups.org/str.php?L4155 */ | |
149 | { 0x04a9, 0x10b6, USBLP_QUIRK_BIDIR }, /* Canon, Inc. PIXMA iP4300 | |
150 | Printer, https://bugs.launchpad.net/bugs/1032385 */ | |
98e8b771 | 151 | { 0x04a9, 0x1721, USBLP_QUIRK_BIDIR }, /* Canon, Inc. MP210 |
152 | https://bugzilla.redhat.com/show_bug.cgi?id=847923#c53 */ | |
a90b57c7 | 153 | { 0x04a9, 0x170c, USBLP_QUIRK_BIDIR }, /* Canon, Inc. MP500 |
154 | Printer, https://bugs.launchpad.net/bugs/1032456 */ | |
155 | { 0x04a9, 0x1717, USBLP_QUIRK_BIDIR }, /* Canon, Inc. MP510 | |
156 | Printer, https://bugs.launchpad.net/bugs/1050009 */ | |
157 | { 0x04a9, 0x173d, USBLP_QUIRK_BIDIR }, /* Canon, Inc. MP550 | |
158 | Printer, http://www.cups.org/str.php?L4155 */ | |
159 | { 0x04a9, 0x173e, USBLP_QUIRK_BIDIR }, /* Canon, Inc. MP560 | |
160 | Printer, http://www.cups.org/str.php?L4155 */ | |
161 | { 0x04f9, 0x001a, USBLP_QUIRK_NO_REATTACH }, /* Brother Industries, Ltd | |
162 | HL-1430 Laser Printer, | |
163 | https://bugs.launchpad.net/bugs/1038695 */ | |
2fa42ed2 | 164 | { 0x04f9, 0x000d, USBLP_QUIRK_BIDIR | |
165 | USBLP_QUIRK_NO_REATTACH }, /* Brother Industries, Ltd | |
a90b57c7 | 166 | HL-1440 Laser Printer, |
167 | https://bugs.launchpad.net/bugs/1000253 */ | |
168 | { 0x06bc, 0x000b, USBLP_QUIRK_NO_REATTACH }, /* Oki Data Corp. | |
169 | Okipage 14ex Printer, | |
170 | https://bugs.launchpad.net/bugs/872483 */ | |
171 | { 0x06bc, 0x01c7, USBLP_QUIRK_NO_REATTACH }, /* Oki Data Corp. B410d, | |
172 | https://bugs.launchpad.net/bugs/872483 */ | |
8d211539 | 173 | { 0x04b8, 0x0001, USBLP_QUIRK_BIDIR }, /* Seiko Epson Corp. Stylus Color 740 / Photo 750, |
174 | http://bugs.debian.org/697970 */ | |
2fa42ed2 | 175 | { 0x04b8, 0x0202, USBLP_QUIRK_BAD_CLASS }, /* Seiko Epson Receipt |
176 | Printer M129C */ | |
177 | { 0x067b, 0x2305, USBLP_QUIRK_BIDIR | | |
8fa16503 | 178 | USBLP_QUIRK_NO_REATTACH | |
179 | USBLP_QUIRK_RESET }, | |
3fa69366 | 180 | { 0x0924, 0x3ce9, USBLP_QUIRK_NO_REATTACH }, /* Xerox Phaser 3124 |
181 | https://bugzilla.redhat.com/show_bug.cgi?id=867392 */ | |
98e8b771 | 182 | { 0x0924, 0x4293, USBLP_QUIRK_NO_REATTACH }, /* Xerox WorkCentre 3210 |
183 | https://bugs.launchpad.net/bugs/1102470 */ | |
2fa42ed2 | 184 | /* Prolific Technology, Inc. PL2305 Parallel Port |
a90b57c7 | 185 | (USB -> Parallel adapter), https://bugs.launchpad.net/bugs/987485 */ |
186 | { 0x04e8, 0x0000, USBLP_QUIRK_RESET }, /* All Samsung devices, | |
187 | https://bugs.launchpad.net/bugs/1032456 */ | |
188 | { 0x0a5f, 0x0000, USBLP_QUIRK_BIDIR }, /* All Zebra devices, | |
189 | https://bugs.launchpad.net/bugs/1001028 */ | |
5d86877b | 190 | /* Canon */ |
191 | { 0x04a9, 0x304a, USBLP_QUIRK_BLACKLIST }, /* Canon CP-10 */ | |
192 | { 0x04a9, 0x3063, USBLP_QUIRK_BLACKLIST }, /* Canon CP-100 */ | |
193 | { 0x04a9, 0x307c, USBLP_QUIRK_BLACKLIST }, /* Canon CP-200 */ | |
194 | { 0x04a9, 0x307d, USBLP_QUIRK_BLACKLIST }, /* Canon CP-300 */ | |
195 | { 0x04a9, 0x30bd, USBLP_QUIRK_BLACKLIST }, /* Canon CP-220 */ | |
196 | { 0x04a9, 0x30be, USBLP_QUIRK_BLACKLIST }, /* Canon CP-330 */ | |
197 | { 0x04a9, 0x30f6, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP400 */ | |
198 | { 0x04a9, 0x310b, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP600 */ | |
199 | { 0x04a9, 0x3127, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP710 */ | |
200 | { 0x04a9, 0x3128, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP510 */ | |
201 | { 0x04a9, 0x3141, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY ES1 */ | |
202 | { 0x04a9, 0x3142, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP730 */ | |
203 | { 0x04a9, 0x3143, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP720 */ | |
204 | { 0x04a9, 0x3170, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP750 */ | |
205 | { 0x04a9, 0x3171, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP740 */ | |
206 | { 0x04a9, 0x3185, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY ES2 */ | |
207 | { 0x04a9, 0x3186, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY ES20 */ | |
208 | { 0x04a9, 0x31aa, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP770 */ | |
209 | { 0x04a9, 0x31ab, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP760 */ | |
210 | { 0x04a9, 0x31b0, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY ES30 */ | |
211 | { 0x04a9, 0x31dd, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP780 */ | |
212 | { 0x04a9, 0x31ee, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY ES40 */ | |
213 | { 0x04a9, 0x3214, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP800 */ | |
214 | { 0x04a9, 0x3255, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP900 */ | |
215 | { 0x04a9, 0x3256, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP810 */ | |
216 | { 0x04a9, 0x30F5, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY CP500 */ | |
217 | { 0x04a9, 0x31AF, USBLP_QUIRK_BLACKLIST }, /* Canon SELPHY ES3 */ | |
218 | /* MISSING PIDs: CP520, CP530, CP790 */ | |
2fa42ed2 | 219 | { 0, 0 } |
220 | }; | |
221 | ||
137fa46b | 222 | |
223 | /* | |
224 | * Globals... | |
225 | */ | |
226 | ||
227 | usb_globals_t g = { 0 }; /* Globals */ | |
228 | libusb_device **list; /* List of connected USB devices */ | |
229 | ||
bdb5a5c3 | 230 | |
231 | /* | |
232 | * Local functions... | |
233 | */ | |
234 | ||
235 | static int close_device(usb_printer_t *printer); | |
236 | static usb_printer_t *find_device(usb_cb_t cb, const void *data); | |
237 | static int get_device_id(usb_printer_t *printer, char *buffer, | |
238 | size_t bufsize); | |
a9800876 | 239 | static int list_cb(usb_printer_t *printer, const char *device_uri, |
240 | const char *device_id, const void *data); | |
bdb5a5c3 | 241 | static char *make_device_uri(usb_printer_t *printer, |
242 | const char *device_id, | |
243 | char *uri, size_t uri_size); | |
a9800876 | 244 | static int open_device(usb_printer_t *printer, int verbose); |
245 | static int print_cb(usb_printer_t *printer, const char *device_uri, | |
246 | const char *device_id, const void *data); | |
2fa42ed2 | 247 | static int printer_class_soft_reset(usb_printer_t *printer); |
248 | static unsigned int quirks(int vendor, int product); | |
137fa46b | 249 | static void *read_thread(void *reference); |
250 | static void *sidechannel_thread(void *reference); | |
251 | static void soft_reset(void); | |
bdb5a5c3 | 252 | |
253 | ||
254 | /* | |
255 | * 'list_devices()' - List the available printers. | |
256 | */ | |
257 | ||
258 | void | |
259 | list_devices(void) | |
260 | { | |
261 | fputs("DEBUG: list_devices\n", stderr); | |
262 | find_device(list_cb, NULL); | |
263 | } | |
264 | ||
265 | ||
266 | /* | |
267 | * 'print_device()' - Print a file to a USB device. | |
268 | */ | |
269 | ||
270 | int /* O - Exit status */ | |
271 | print_device(const char *uri, /* I - Device URI */ | |
272 | const char *hostname, /* I - Hostname/manufacturer */ | |
273 | const char *resource, /* I - Resource/modelname */ | |
274 | char *options, /* I - Device options/serial number */ | |
275 | int print_fd, /* I - File descriptor to print */ | |
276 | int copies, /* I - Copies to print */ | |
277 | int argc, /* I - Number of command-line arguments (6 or 7) */ | |
278 | char *argv[]) /* I - Command-line arguments */ | |
279 | { | |
137fa46b | 280 | int bytes; /* Bytes written */ |
281 | ssize_t total_bytes; /* Total bytes written */ | |
d11f579d | 282 | struct sigaction action; /* Actions for POSIX signals */ |
137fa46b | 283 | int status = CUPS_BACKEND_OK, |
284 | /* Function results */ | |
285 | iostatus; /* Current IO status */ | |
286 | pthread_t read_thread_id, /* Read thread */ | |
287 | sidechannel_thread_id; /* Side-channel thread */ | |
2fa42ed2 | 288 | int have_sidechannel = 0, /* Was the side-channel thread started? */ |
289 | have_backchannel = 0; /* Do we have a back channel? */ | |
137fa46b | 290 | struct stat sidechannel_info; /* Side-channel file descriptor info */ |
291 | unsigned char print_buffer[8192], /* Print data buffer */ | |
292 | *print_ptr; /* Pointer into print data buffer */ | |
293 | fd_set input_set; /* Input set for select() */ | |
294 | int nfds; /* Number of file descriptors */ | |
295 | struct timeval *timeout, /* Timeout pointer */ | |
296 | tv; /* Time value */ | |
297 | struct timespec cond_timeout; /* pthread condition timeout */ | |
2fa42ed2 | 298 | int num_opts; /* Number of options */ |
299 | cups_option_t *opts; /* Options */ | |
300 | const char *val; /* Option value */ | |
137fa46b | 301 | |
a9800876 | 302 | |
137fa46b | 303 | /* |
304 | * See if the side-channel descriptor is valid... | |
305 | */ | |
a9800876 | 306 | |
137fa46b | 307 | have_sidechannel = !fstat(CUPS_SC_FD, &sidechannel_info) && |
308 | S_ISSOCK(sidechannel_info.st_mode); | |
309 | ||
310 | g.wait_eof = WAIT_EOF; | |
a9800876 | 311 | |
d11f579d | 312 | /* |
313 | * Connect to the printer... | |
314 | */ | |
315 | ||
2fa42ed2 | 316 | fprintf(stderr, "DEBUG: Printing on printer with URI: %s\n", uri); |
137fa46b | 317 | while ((g.printer = find_device(print_cb, uri)) == NULL) |
a9800876 | 318 | { |
2e3228ef | 319 | _cupsLangPrintFilter(stderr, "INFO", |
bd2147fb | 320 | _("Waiting for printer to become available.")); |
a9800876 | 321 | sleep(5); |
322 | } | |
323 | ||
137fa46b | 324 | g.print_fd = print_fd; |
8fa16503 | 325 | |
326 | /* | |
327 | * Some devices need a reset after finishing a job, these devices are | |
328 | * marked with the USBLP_QUIRK_RESET quirk. | |
329 | */ | |
330 | g.printer->reset_after_job = (g.printer->quirks & USBLP_QUIRK_RESET ? 1 : 0); | |
d11f579d | 331 | |
332 | /* | |
333 | * If we are printing data from a print driver on stdin, ignore SIGTERM | |
334 | * so that the driver can finish out any page data, e.g. to eject the | |
335 | * current page. We only do this for stdin printing as otherwise there | |
336 | * is no way to cancel a raw print job... | |
337 | */ | |
338 | ||
339 | if (!print_fd) | |
340 | { | |
341 | memset(&action, 0, sizeof(action)); | |
342 | ||
343 | sigemptyset(&action.sa_mask); | |
344 | action.sa_handler = SIG_IGN; | |
345 | sigaction(SIGTERM, &action, NULL); | |
346 | } | |
347 | ||
137fa46b | 348 | /* |
349 | * Start the side channel thread if the descriptor is valid... | |
350 | */ | |
351 | ||
352 | pthread_mutex_init(&g.readwrite_lock_mutex, NULL); | |
353 | pthread_cond_init(&g.readwrite_lock_cond, NULL); | |
354 | g.readwrite_lock = 1; | |
355 | ||
356 | if (have_sidechannel) | |
357 | { | |
358 | g.sidechannel_thread_stop = 0; | |
359 | g.sidechannel_thread_done = 0; | |
360 | ||
361 | pthread_cond_init(&g.sidechannel_thread_cond, NULL); | |
362 | pthread_mutex_init(&g.sidechannel_thread_mutex, NULL); | |
363 | ||
364 | if (pthread_create(&sidechannel_thread_id, NULL, sidechannel_thread, NULL)) | |
365 | { | |
366 | fprintf(stderr, "DEBUG: Fatal USB error.\n"); | |
367 | _cupsLangPrintFilter(stderr, "ERROR", | |
368 | _("There was an unrecoverable USB error.")); | |
369 | fputs("DEBUG: Couldn't create side-channel thread.\n", stderr); | |
370 | close_device(g.printer); | |
371 | return (CUPS_BACKEND_STOP); | |
372 | } | |
373 | } | |
374 | ||
375 | /* | |
2fa42ed2 | 376 | * Debug mode: If option "usb-unidir" is given, always deactivate |
377 | * backchannel | |
137fa46b | 378 | */ |
379 | ||
2fa42ed2 | 380 | num_opts = cupsParseOptions(argv[5], 0, &opts); |
381 | val = cupsGetOption("usb-unidir", num_opts, opts); | |
382 | if (val && strcasecmp(val, "no") && strcasecmp(val, "off") && | |
383 | strcasecmp(val, "false")) | |
384 | { | |
385 | g.printer->read_endp = -1; | |
386 | fprintf(stderr, "DEBUG: Forced uni-directional communication " | |
387 | "via \"usb-unidir\" option.\n"); | |
388 | } | |
137fa46b | 389 | |
2fa42ed2 | 390 | /* |
391 | * Debug mode: If option "usb-no-reattach" is given, do not re-attach | |
392 | * the usblp kernel module after the job has completed. | |
393 | */ | |
137fa46b | 394 | |
2fa42ed2 | 395 | val = cupsGetOption("usb-no-reattach", num_opts, opts); |
396 | if (val && strcasecmp(val, "no") && strcasecmp(val, "off") && | |
397 | strcasecmp(val, "false")) | |
137fa46b | 398 | { |
2fa42ed2 | 399 | g.printer->usblp_attached = 0; |
400 | fprintf(stderr, "DEBUG: Forced not re-attaching the usblp kernel module " | |
401 | "after the job via \"usb-no-reattach\" option.\n"); | |
137fa46b | 402 | } |
403 | ||
2fa42ed2 | 404 | /* |
405 | * Get the read thread going... | |
406 | */ | |
407 | ||
408 | if (g.printer->read_endp != -1) | |
409 | { | |
410 | have_backchannel = 1; | |
411 | ||
412 | g.read_thread_stop = 0; | |
413 | g.read_thread_done = 0; | |
414 | ||
415 | pthread_cond_init(&g.read_thread_cond, NULL); | |
416 | pthread_mutex_init(&g.read_thread_mutex, NULL); | |
417 | ||
418 | if (pthread_create(&read_thread_id, NULL, read_thread, NULL)) | |
419 | { | |
420 | fprintf(stderr, "DEBUG: Fatal USB error.\n"); | |
421 | _cupsLangPrintFilter(stderr, "ERROR", | |
422 | _("There was an unrecoverable USB error.")); | |
423 | fputs("DEBUG: Couldn't create read thread.\n", stderr); | |
424 | close_device(g.printer); | |
425 | return (CUPS_BACKEND_STOP); | |
426 | } | |
427 | } | |
428 | else | |
429 | fprintf(stderr, "DEBUG: Uni-directional device/mode, back channel " | |
430 | "deactivated.\n"); | |
431 | ||
137fa46b | 432 | /* |
433 | * The main thread sends the print file... | |
434 | */ | |
d11f579d | 435 | |
137fa46b | 436 | g.drain_output = 0; |
437 | g.print_bytes = 0; | |
438 | total_bytes = 0; | |
439 | print_ptr = print_buffer; | |
4828c388 | 440 | |
137fa46b | 441 | while (status == CUPS_BACKEND_OK && copies-- > 0) |
d11f579d | 442 | { |
137fa46b | 443 | _cupsLangPrintFilter(stderr, "INFO", _("Sending data to printer.")); |
d11f579d | 444 | |
137fa46b | 445 | if (print_fd != STDIN_FILENO) |
d11f579d | 446 | { |
447 | fputs("PAGE: 1 1\n", stderr); | |
448 | lseek(print_fd, 0, SEEK_SET); | |
449 | } | |
450 | ||
137fa46b | 451 | while (status == CUPS_BACKEND_OK) |
d11f579d | 452 | { |
137fa46b | 453 | FD_ZERO(&input_set); |
454 | ||
455 | if (!g.print_bytes) | |
456 | FD_SET(print_fd, &input_set); | |
457 | ||
1ac626aa | 458 | /* |
137fa46b | 459 | * Calculate select timeout... |
460 | * If we have data waiting to send timeout is 100ms. | |
461 | * else if we're draining print_fd timeout is 0. | |
462 | * else we're waiting forever... | |
1ac626aa | 463 | */ |
464 | ||
137fa46b | 465 | if (g.print_bytes) |
466 | { | |
467 | tv.tv_sec = 0; | |
468 | tv.tv_usec = 100000; /* 100ms */ | |
469 | timeout = &tv; | |
470 | } | |
471 | else if (g.drain_output) | |
472 | { | |
473 | tv.tv_sec = 0; | |
474 | tv.tv_usec = 0; | |
475 | timeout = &tv; | |
476 | } | |
477 | else | |
478 | timeout = NULL; | |
479 | ||
480 | /* | |
481 | * I/O is unlocked around select... | |
482 | */ | |
483 | ||
484 | pthread_mutex_lock(&g.readwrite_lock_mutex); | |
485 | g.readwrite_lock = 0; | |
486 | pthread_cond_signal(&g.readwrite_lock_cond); | |
487 | pthread_mutex_unlock(&g.readwrite_lock_mutex); | |
488 | ||
489 | nfds = select(print_fd + 1, &input_set, NULL, NULL, timeout); | |
490 | ||
491 | /* | |
492 | * Reacquire the lock... | |
493 | */ | |
494 | ||
495 | pthread_mutex_lock(&g.readwrite_lock_mutex); | |
496 | while (g.readwrite_lock) | |
497 | pthread_cond_wait(&g.readwrite_lock_cond, &g.readwrite_lock_mutex); | |
498 | g.readwrite_lock = 1; | |
499 | pthread_mutex_unlock(&g.readwrite_lock_mutex); | |
500 | ||
501 | if (nfds < 0) | |
d11f579d | 502 | { |
137fa46b | 503 | if (errno == EINTR && total_bytes == 0) |
4828c388 | 504 | { |
137fa46b | 505 | fputs("DEBUG: Received an interrupt before any bytes were " |
506 | "written, aborting.\n", stderr); | |
507 | close_device(g.printer); | |
508 | return (CUPS_BACKEND_OK); | |
509 | } | |
510 | else if (errno != EAGAIN && errno != EINTR) | |
511 | { | |
512 | _cupsLangPrintFilter(stderr, "ERROR", | |
513 | _("Unable to read print data.")); | |
514 | perror("DEBUG: select"); | |
515 | close_device(g.printer); | |
516 | return (CUPS_BACKEND_FAILED); | |
517 | } | |
518 | } | |
519 | ||
520 | /* | |
521 | * If drain output has finished send a response... | |
522 | */ | |
523 | ||
524 | if (g.drain_output && !nfds && !g.print_bytes) | |
525 | { | |
526 | /* Send a response... */ | |
527 | cupsSideChannelWrite(CUPS_SC_CMD_DRAIN_OUTPUT, CUPS_SC_STATUS_OK, NULL, 0, 1.0); | |
528 | g.drain_output = 0; | |
529 | } | |
530 | ||
531 | /* | |
532 | * Check if we have print data ready... | |
533 | */ | |
534 | ||
535 | if (FD_ISSET(print_fd, &input_set)) | |
536 | { | |
537 | g.print_bytes = read(print_fd, print_buffer, sizeof(print_buffer)); | |
538 | ||
539 | if (g.print_bytes < 0) | |
540 | { | |
541 | /* | |
542 | * Read error - bail if we don't see EAGAIN or EINTR... | |
543 | */ | |
544 | ||
545 | if (errno != EAGAIN && errno != EINTR) | |
4828c388 | 546 | { |
2e3228ef | 547 | _cupsLangPrintFilter(stderr, "ERROR", |
137fa46b | 548 | _("Unable to read print data.")); |
549 | perror("DEBUG: read"); | |
550 | close_device(g.printer); | |
551 | return (CUPS_BACKEND_FAILED); | |
4828c388 | 552 | } |
553 | ||
137fa46b | 554 | g.print_bytes = 0; |
4828c388 | 555 | } |
137fa46b | 556 | else if (g.print_bytes == 0) |
557 | { | |
558 | /* | |
559 | * End of file, break out of the loop... | |
560 | */ | |
561 | ||
4828c388 | 562 | break; |
137fa46b | 563 | } |
564 | ||
565 | print_ptr = print_buffer; | |
566 | ||
567 | fprintf(stderr, "DEBUG: Read %d bytes of print data...\n", | |
568 | (int)g.print_bytes); | |
d11f579d | 569 | } |
570 | ||
137fa46b | 571 | if (g.print_bytes) |
572 | { | |
573 | iostatus = libusb_bulk_transfer(g.printer->handle, | |
574 | g.printer->write_endp, | |
575 | print_buffer, g.print_bytes, | |
576 | &bytes, 60000); | |
577 | /* | |
578 | * Ignore timeout errors, but retain the number of bytes written to | |
579 | * avoid sending duplicate data... | |
580 | */ | |
581 | ||
582 | if (iostatus == LIBUSB_ERROR_TIMEOUT) | |
583 | { | |
584 | fputs("DEBUG: Got USB transaction timeout during write.\n", stderr); | |
585 | iostatus = 0; | |
586 | } | |
587 | ||
588 | /* | |
589 | * If we've stalled, retry the write... | |
590 | */ | |
591 | ||
592 | else if (iostatus == LIBUSB_ERROR_PIPE) | |
593 | { | |
594 | fputs("DEBUG: Got USB pipe stalled during write.\n", stderr); | |
595 | ||
596 | iostatus = libusb_bulk_transfer(g.printer->handle, | |
597 | g.printer->write_endp, | |
598 | print_buffer, g.print_bytes, | |
599 | &bytes, 60000); | |
600 | } | |
601 | ||
602 | /* | |
603 | * Retry a write after an aborted write since we probably just got | |
604 | * SIGTERM... | |
605 | */ | |
606 | ||
607 | else if (iostatus == LIBUSB_ERROR_INTERRUPTED) | |
608 | { | |
609 | fputs("DEBUG: Got USB return aborted during write.\n", stderr); | |
610 | ||
611 | iostatus = libusb_bulk_transfer(g.printer->handle, | |
612 | g.printer->write_endp, | |
613 | print_buffer, g.print_bytes, | |
614 | &bytes, 60000); | |
615 | } | |
616 | ||
617 | if (iostatus) | |
618 | { | |
619 | /* | |
620 | * Write error - bail if we don't see an error we can retry... | |
621 | */ | |
622 | ||
623 | _cupsLangPrintFilter(stderr, "ERROR", | |
624 | _("Unable to send data to printer.")); | |
625 | fprintf(stderr, "DEBUG: libusb write operation returned %x.\n", | |
626 | iostatus); | |
627 | ||
628 | status = CUPS_BACKEND_FAILED; | |
629 | break; | |
630 | } | |
631 | else if (bytes > 0) | |
632 | { | |
633 | fprintf(stderr, "DEBUG: Wrote %d bytes of print data...\n", | |
634 | (int)bytes); | |
635 | ||
636 | g.print_bytes -= bytes; | |
637 | print_ptr += bytes; | |
638 | total_bytes += bytes; | |
639 | } | |
640 | } | |
641 | ||
642 | if (print_fd != 0 && status == CUPS_BACKEND_OK) | |
643 | fprintf(stderr, "DEBUG: Sending print file, " CUPS_LLFMT " bytes...\n", | |
644 | CUPS_LLCAST total_bytes); | |
645 | } | |
646 | } | |
647 | ||
648 | fprintf(stderr, "DEBUG: Sent " CUPS_LLFMT " bytes...\n", | |
649 | CUPS_LLCAST total_bytes); | |
650 | ||
651 | /* | |
652 | * Signal the side channel thread to exit... | |
653 | */ | |
654 | ||
655 | if (have_sidechannel) | |
656 | { | |
657 | close(CUPS_SC_FD); | |
658 | pthread_mutex_lock(&g.readwrite_lock_mutex); | |
659 | g.readwrite_lock = 0; | |
660 | pthread_cond_signal(&g.readwrite_lock_cond); | |
661 | pthread_mutex_unlock(&g.readwrite_lock_mutex); | |
662 | ||
663 | g.sidechannel_thread_stop = 1; | |
664 | pthread_mutex_lock(&g.sidechannel_thread_mutex); | |
665 | ||
666 | if (!g.sidechannel_thread_done) | |
667 | { | |
668 | gettimeofday(&tv, NULL); | |
669 | cond_timeout.tv_sec = tv.tv_sec + WAIT_SIDE_DELAY; | |
670 | cond_timeout.tv_nsec = tv.tv_usec * 1000; | |
671 | ||
672 | while (!g.sidechannel_thread_done) | |
673 | { | |
674 | if (pthread_cond_timedwait(&g.sidechannel_thread_cond, | |
675 | &g.sidechannel_thread_mutex, | |
676 | &cond_timeout) != 0) | |
677 | break; | |
678 | } | |
679 | } | |
680 | ||
681 | pthread_mutex_unlock(&g.sidechannel_thread_mutex); | |
682 | } | |
683 | ||
684 | /* | |
685 | * Signal the read thread to exit then wait 7 seconds for it to complete... | |
686 | */ | |
687 | ||
2fa42ed2 | 688 | if (have_backchannel) |
137fa46b | 689 | { |
2fa42ed2 | 690 | g.read_thread_stop = 1; |
137fa46b | 691 | |
2fa42ed2 | 692 | pthread_mutex_lock(&g.read_thread_mutex); |
25d7dad9 | 693 | |
137fa46b | 694 | if (!g.read_thread_done) |
695 | { | |
2fa42ed2 | 696 | fputs("DEBUG: Waiting for read thread to exit...\n", stderr); |
137fa46b | 697 | |
698 | gettimeofday(&tv, NULL); | |
2fa42ed2 | 699 | cond_timeout.tv_sec = tv.tv_sec + WAIT_EOF_DELAY; |
137fa46b | 700 | cond_timeout.tv_nsec = tv.tv_usec * 1000; |
25d7dad9 | 701 | |
137fa46b | 702 | while (!g.read_thread_done) |
a806b4ec | 703 | { |
137fa46b | 704 | if (pthread_cond_timedwait(&g.read_thread_cond, &g.read_thread_mutex, |
705 | &cond_timeout) != 0) | |
706 | break; | |
a806b4ec | 707 | } |
2fa42ed2 | 708 | |
709 | /* | |
710 | * If it didn't exit abort the pending read and wait an additional | |
711 | * second... | |
712 | */ | |
a674809b | 713 | |
2fa42ed2 | 714 | if (!g.read_thread_done) |
715 | { | |
a674809b | 716 | fputs("DEBUG: Read thread still active, aborting the pending read...\n", |
2fa42ed2 | 717 | stderr); |
718 | ||
719 | g.wait_eof = 0; | |
720 | ||
721 | gettimeofday(&tv, NULL); | |
722 | cond_timeout.tv_sec = tv.tv_sec + 1; | |
723 | cond_timeout.tv_nsec = tv.tv_usec * 1000; | |
a674809b | 724 | |
2fa42ed2 | 725 | while (!g.read_thread_done) |
726 | { | |
727 | if (pthread_cond_timedwait(&g.read_thread_cond, &g.read_thread_mutex, | |
728 | &cond_timeout) != 0) | |
729 | break; | |
730 | } | |
731 | } | |
d11f579d | 732 | } |
d11f579d | 733 | |
2fa42ed2 | 734 | pthread_mutex_unlock(&g.read_thread_mutex); |
735 | } | |
137fa46b | 736 | |
d11f579d | 737 | /* |
137fa46b | 738 | * Close the connection and input file and general clean up... |
d11f579d | 739 | */ |
740 | ||
137fa46b | 741 | close_device(g.printer); |
a9800876 | 742 | |
ec1bf980 | 743 | /* |
744 | * Clean up .... | |
745 | */ | |
746 | ||
747 | libusb_free_device_list(list, 1); | |
748 | libusb_exit(NULL); | |
749 | ||
137fa46b | 750 | return (status); |
bdb5a5c3 | 751 | } |
752 | ||
753 | ||
754 | /* | |
755 | * 'close_device()' - Close the connection to the USB printer. | |
756 | */ | |
757 | ||
758 | static int /* I - 0 on success, -1 on failure */ | |
759 | close_device(usb_printer_t *printer) /* I - Printer */ | |
760 | { | |
ec1bf980 | 761 | struct libusb_device_descriptor devdesc; |
762 | /* Current device descriptor */ | |
763 | struct libusb_config_descriptor *confptr; | |
764 | /* Pointer to current configuration */ | |
765 | ||
137fa46b | 766 | |
bdb5a5c3 | 767 | if (printer->handle) |
768 | { | |
b5565217 | 769 | /* |
770 | * Release interfaces before closing so that we know all data is written | |
771 | * to the device... | |
772 | */ | |
773 | ||
5adb84f8 | 774 | int errcode; /* Return value of libusb function */ |
2fa42ed2 | 775 | int number1, /* Interface number */ |
776 | number2; /* Configuration number */ | |
137fa46b | 777 | |
779ec102 | 778 | errcode = |
2fa42ed2 | 779 | libusb_get_config_descriptor(printer->device, printer->conf, &confptr); |
5adb84f8 | 780 | if (errcode >= 0) |
781 | { | |
2fa42ed2 | 782 | number1 = confptr->interface[printer->iface]. |
5adb84f8 | 783 | altsetting[printer->altset].bInterfaceNumber; |
2fa42ed2 | 784 | libusb_release_interface(printer->handle, number1); |
785 | ||
786 | number2 = confptr->bConfigurationValue; | |
787 | ||
788 | libusb_free_config_descriptor(confptr); | |
789 | ||
790 | /* | |
791 | * If we have changed the configuration from one valid configuration | |
792 | * to another, restore the old one | |
793 | */ | |
794 | if (printer->origconf > 0 && printer->origconf != number2) | |
795 | { | |
a674809b | 796 | fprintf(stderr, "DEBUG: Restoring USB device configuration: %d -> %d\n", |
2fa42ed2 | 797 | number2, printer->origconf); |
798 | if ((errcode = libusb_set_configuration(printer->handle, | |
799 | printer->origconf)) < 0) | |
800 | { | |
801 | if (errcode != LIBUSB_ERROR_BUSY) | |
802 | { | |
803 | errcode = | |
804 | libusb_get_device_descriptor (printer->device, &devdesc); | |
805 | if (errcode < 0) | |
806 | fprintf(stderr, | |
807 | "DEBUG: Failed to set configuration %d\n", | |
808 | printer->origconf); | |
809 | else | |
810 | fprintf(stderr, | |
811 | "DEBUG: Failed to set configuration %d for %04x:%04x\n", | |
812 | printer->origconf, devdesc.idVendor, devdesc.idProduct); | |
813 | } | |
814 | } | |
815 | } | |
ec1bf980 | 816 | |
5adb84f8 | 817 | /* |
818 | * Re-attach "usblp" kernel module if it was attached before using this | |
819 | * device | |
820 | */ | |
821 | if (printer->usblp_attached == 1) | |
2fa42ed2 | 822 | if (libusb_attach_kernel_driver(printer->handle, number1) < 0) |
5adb84f8 | 823 | { |
824 | errcode = libusb_get_device_descriptor (printer->device, &devdesc); | |
825 | if (errcode < 0) | |
826 | fprintf(stderr, | |
827 | "DEBUG: Failed to re-attach \"usblp\" kernel module\n"); | |
828 | else | |
829 | fprintf(stderr, | |
830 | "DEBUG: Failed to re-attach \"usblp\" kernel module to " | |
831 | "%04x:%04x\n", devdesc.idVendor, devdesc.idProduct); | |
832 | } | |
2fa42ed2 | 833 | } |
834 | else | |
835 | fprintf(stderr, | |
836 | "DEBUG: Failed to get configuration descriptor %d\n", | |
837 | printer->conf); | |
137fa46b | 838 | |
2fa42ed2 | 839 | /* |
840 | * Reset the device to clean up after the job | |
841 | */ | |
842 | ||
8fa16503 | 843 | if (printer->reset_after_job == 1) |
2fa42ed2 | 844 | { |
845 | if ((errcode = libusb_reset_device(printer->handle)) < 0) | |
846 | fprintf(stderr, | |
847 | "DEBUG: Device reset failed, error code: %d\n", | |
848 | errcode); | |
849 | else | |
850 | fprintf(stderr, | |
851 | "DEBUG: Resetting printer.\n"); | |
137fa46b | 852 | } |
ec1bf980 | 853 | |
b5565217 | 854 | /* |
855 | * Close the interface and return... | |
856 | */ | |
857 | ||
ec1bf980 | 858 | libusb_close(printer->handle); |
bdb5a5c3 | 859 | printer->handle = NULL; |
860 | } | |
861 | ||
862 | return (0); | |
863 | } | |
864 | ||
865 | ||
866 | /* | |
867 | * 'find_device()' - Find or enumerate USB printers. | |
868 | */ | |
869 | ||
870 | static usb_printer_t * /* O - Found printer */ | |
871 | find_device(usb_cb_t cb, /* I - Callback function */ | |
872 | const void *data) /* I - User data for callback */ | |
873 | { | |
ec1bf980 | 874 | libusb_device **list; /* List of connected USB devices */ |
875 | libusb_device *device = NULL; /* Current device */ | |
876 | struct libusb_device_descriptor devdesc; | |
877 | /* Current device descriptor */ | |
878 | struct libusb_config_descriptor *confptr = NULL; | |
879 | /* Pointer to current configuration */ | |
880 | const struct libusb_interface *ifaceptr = NULL; | |
881 | /* Pointer to current interface */ | |
882 | const struct libusb_interface_descriptor *altptr = NULL; | |
bdb5a5c3 | 883 | /* Pointer to current alternate setting */ |
ec1bf980 | 884 | const struct libusb_endpoint_descriptor *endpptr = NULL; |
bdb5a5c3 | 885 | /* Pointer to current endpoint */ |
ec1bf980 | 886 | ssize_t numdevs, /* number of connected devices */ |
887 | i = 0; | |
888 | uint8_t conf, /* Current configuration */ | |
bdb5a5c3 | 889 | iface, /* Current interface */ |
890 | altset, /* Current alternate setting */ | |
891 | protocol, /* Current protocol */ | |
892 | endp, /* Current endpoint */ | |
893 | read_endp, /* Current read endpoint */ | |
894 | write_endp; /* Current write endpoint */ | |
a9800876 | 895 | char device_id[1024],/* IEEE-1284 device ID */ |
896 | device_uri[1024]; | |
897 | /* Device URI */ | |
bdb5a5c3 | 898 | static usb_printer_t printer; /* Current printer */ |
899 | ||
900 | ||
901 | /* | |
902 | * Initialize libusb... | |
903 | */ | |
904 | ||
ec1bf980 | 905 | libusb_init(NULL); |
906 | numdevs = libusb_get_device_list(NULL, &list); | |
907 | fprintf(stderr, "DEBUG: libusb_get_device_list=%d\n", (int)numdevs); | |
bdb5a5c3 | 908 | |
909 | /* | |
910 | * Then loop through the devices it found... | |
911 | */ | |
912 | ||
ec1bf980 | 913 | if (numdevs > 0) |
914 | for (i = 0; i < numdevs; i++) | |
bdb5a5c3 | 915 | { |
ec1bf980 | 916 | device = list[i]; |
917 | ||
bdb5a5c3 | 918 | /* |
919 | * Ignore devices with no configuration data and anything that is not | |
920 | * a printer... | |
921 | */ | |
922 | ||
2fa42ed2 | 923 | if (libusb_get_device_descriptor(device, &devdesc) < 0) |
5adb84f8 | 924 | continue; |
ec1bf980 | 925 | |
926 | if (!devdesc.bNumConfigurations || !devdesc.idVendor || | |
927 | !devdesc.idProduct) | |
bdb5a5c3 | 928 | continue; |
929 | ||
5d86877b | 930 | printer.quirks = quirks(devdesc.idVendor, devdesc.idProduct); |
931 | ||
932 | /* | |
933 | * Ignore blacklisted printers... | |
934 | */ | |
935 | ||
936 | if (printer.quirks & USBLP_QUIRK_BLACKLIST) | |
937 | continue; | |
2fa42ed2 | 938 | |
ec1bf980 | 939 | for (conf = 0; conf < devdesc.bNumConfigurations; conf ++) |
940 | { | |
25d7dad9 | 941 | if (libusb_get_config_descriptor(device, conf, &confptr) < 0) |
ec1bf980 | 942 | continue; |
bdb5a5c3 | 943 | for (iface = 0, ifaceptr = confptr->interface; |
944 | iface < confptr->bNumInterfaces; | |
945 | iface ++, ifaceptr ++) | |
946 | { | |
947 | /* | |
948 | * Some printers offer multiple interfaces... | |
949 | */ | |
950 | ||
951 | protocol = 0; | |
952 | ||
953 | for (altset = 0, altptr = ifaceptr->altsetting; | |
954 | altset < ifaceptr->num_altsetting; | |
955 | altset ++, altptr ++) | |
956 | { | |
957 | /* | |
958 | * Currently we only support unidirectional and bidirectional | |
959 | * printers. Future versions of this code will support the | |
960 | * 1284.4 (packet mode) protocol as well. | |
961 | */ | |
962 | ||
2fa42ed2 | 963 | if (((altptr->bInterfaceClass != LIBUSB_CLASS_PRINTER || |
a674809b | 964 | altptr->bInterfaceSubClass != 1) && |
2fa42ed2 | 965 | ((printer.quirks & USBLP_QUIRK_BAD_CLASS) == 0)) || |
bdb5a5c3 | 966 | (altptr->bInterfaceProtocol != 1 && /* Unidirectional */ |
967 | altptr->bInterfaceProtocol != 2) || /* Bidirectional */ | |
968 | altptr->bInterfaceProtocol < protocol) | |
969 | continue; | |
970 | ||
2fa42ed2 | 971 | if (printer.quirks & USBLP_QUIRK_BAD_CLASS) |
972 | fprintf(stderr, "DEBUG: Printer does not report class 7 and/or " | |
973 | "subclass 1 but works as a printer anyway\n"); | |
974 | ||
bdb5a5c3 | 975 | read_endp = -1; |
976 | write_endp = -1; | |
977 | ||
978 | for (endp = 0, endpptr = altptr->endpoint; | |
979 | endp < altptr->bNumEndpoints; | |
980 | endp ++, endpptr ++) | |
ec1bf980 | 981 | if ((endpptr->bmAttributes & LIBUSB_TRANSFER_TYPE_MASK) == |
982 | LIBUSB_TRANSFER_TYPE_BULK) | |
bdb5a5c3 | 983 | { |
ec1bf980 | 984 | if (endpptr->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK) |
bdb5a5c3 | 985 | read_endp = endp; |
986 | else | |
987 | write_endp = endp; | |
988 | } | |
989 | ||
990 | if (write_endp >= 0) | |
991 | { | |
992 | /* | |
993 | * Save the best match so far... | |
994 | */ | |
995 | ||
996 | protocol = altptr->bInterfaceProtocol; | |
997 | printer.altset = altset; | |
998 | printer.write_endp = write_endp; | |
2fa42ed2 | 999 | if (protocol > 1) |
1000 | printer.read_endp = read_endp; | |
1001 | else | |
1002 | printer.read_endp = -1; | |
bdb5a5c3 | 1003 | } |
1004 | } | |
1005 | ||
1006 | if (protocol > 0) | |
1007 | { | |
137fa46b | 1008 | printer.device = device; |
1009 | printer.conf = conf; | |
1010 | printer.iface = iface; | |
1011 | printer.protocol = protocol; | |
1012 | printer.handle = NULL; | |
bdb5a5c3 | 1013 | |
a9800876 | 1014 | if (!open_device(&printer, data != NULL)) |
bdb5a5c3 | 1015 | { |
ec1bf980 | 1016 | get_device_id(&printer, device_id, sizeof(device_id)); |
1017 | make_device_uri(&printer, device_id, device_uri, | |
1018 | sizeof(device_uri)); | |
a9800876 | 1019 | |
2fa42ed2 | 1020 | fprintf(stderr, "DEBUG2: Printer found with device ID: %s " |
1021 | "Device URI: %s\n", | |
1022 | device_id, device_uri); | |
1023 | ||
ec1bf980 | 1024 | if ((*cb)(&printer, device_uri, device_id, data)) |
1025 | { | |
2fa42ed2 | 1026 | fprintf(stderr, "DEBUG: Device protocol: %d\n", |
1027 | printer.protocol); | |
1028 | if (printer.quirks & USBLP_QUIRK_BIDIR) | |
1029 | { | |
1030 | printer.read_endp = -1; | |
1031 | fprintf(stderr, "DEBUG: Printer reports bi-di support " | |
1032 | "but in reality works only uni-directionally\n"); | |
1033 | } | |
1034 | if (printer.read_endp != -1) | |
1035 | { | |
1036 | printer.read_endp = confptr->interface[printer.iface]. | |
1037 | altsetting[printer.altset]. | |
1038 | endpoint[printer.read_endp]. | |
1039 | bEndpointAddress; | |
1040 | } | |
1041 | else | |
a674809b | 1042 | fprintf(stderr, "DEBUG: Uni-directional USB communication " |
2fa42ed2 | 1043 | "only!\n"); |
ec1bf980 | 1044 | printer.write_endp = confptr->interface[printer.iface]. |
4828c388 | 1045 | altsetting[printer.altset]. |
1046 | endpoint[printer.write_endp]. | |
1047 | bEndpointAddress; | |
2fa42ed2 | 1048 | if (printer.quirks & USBLP_QUIRK_NO_REATTACH) |
1049 | { | |
1050 | printer.usblp_attached = 0; | |
1051 | fprintf(stderr, "DEBUG: Printer does not like usblp " | |
1052 | "kernel module to be re-attached after job\n"); | |
1053 | } | |
1054 | libusb_free_config_descriptor(confptr); | |
ec1bf980 | 1055 | return (&printer); |
a9800876 | 1056 | } |
bdb5a5c3 | 1057 | |
1058 | close_device(&printer); | |
1059 | } | |
1060 | } | |
1061 | } | |
ec1bf980 | 1062 | libusb_free_config_descriptor(confptr); |
1063 | } | |
bdb5a5c3 | 1064 | } |
1065 | ||
1066 | /* | |
1067 | * If we get this far without returning, then we haven't found a printer | |
1068 | * to print to... | |
1069 | */ | |
1070 | ||
ec1bf980 | 1071 | /* |
1072 | * Clean up .... | |
1073 | */ | |
1074 | ||
1075 | libusb_free_device_list(list, 1); | |
1076 | libusb_exit(NULL); | |
1077 | ||
bdb5a5c3 | 1078 | return (NULL); |
1079 | } | |
1080 | ||
1081 | ||
1082 | /* | |
1083 | * 'get_device_id()' - Get the IEEE-1284 device ID for the printer. | |
1084 | */ | |
1085 | ||
1086 | static int /* O - 0 on success, -1 on error */ | |
1087 | get_device_id(usb_printer_t *printer, /* I - Printer */ | |
1088 | char *buffer, /* I - String buffer */ | |
1089 | size_t bufsize) /* I - Number of bytes in buffer */ | |
1090 | { | |
1091 | int length; /* Length of device ID */ | |
1092 | ||
1093 | ||
ec1bf980 | 1094 | if (libusb_control_transfer(printer->handle, |
1095 | LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_ENDPOINT_IN | | |
1096 | LIBUSB_RECIPIENT_INTERFACE, | |
1097 | 0, printer->conf, | |
1098 | (printer->iface << 8) | printer->altset, | |
1099 | (unsigned char *)buffer, bufsize, 5000) < 0) | |
bdb5a5c3 | 1100 | { |
1101 | *buffer = '\0'; | |
1102 | return (-1); | |
1103 | } | |
1104 | ||
1105 | /* | |
1106 | * Extract the length of the device ID string from the first two | |
1107 | * bytes. The 1284 spec says the length is stored MSB first... | |
1108 | */ | |
1109 | ||
b529ea47 | 1110 | length = (((unsigned)buffer[0] & 255) << 8) | |
bdb5a5c3 | 1111 | ((unsigned)buffer[1] & 255); |
1112 | ||
1113 | /* | |
b529ea47 | 1114 | * Check to see if the length is larger than our buffer or less than 14 bytes |
1115 | * (the minimum valid device ID is "MFG:x;MDL:y;" with 2 bytes for the length). | |
1116 | * | |
1117 | * If the length is out-of-range, assume that the vendor incorrectly | |
1118 | * implemented the 1284 spec and re-read the length as LSB first,.. | |
bdb5a5c3 | 1119 | */ |
1120 | ||
b529ea47 | 1121 | if (length > bufsize || length < 14) |
1122 | length = (((unsigned)buffer[1] & 255) << 8) | | |
bdb5a5c3 | 1123 | ((unsigned)buffer[0] & 255); |
1124 | ||
b379a395 | 1125 | if (length > bufsize) |
1126 | length = bufsize; | |
1127 | ||
b529ea47 | 1128 | if (length < 14) |
1129 | { | |
1130 | /* | |
1131 | * Invalid device ID, clear it! | |
1132 | */ | |
1133 | ||
1134 | *buffer = '\0'; | |
1135 | return (-1); | |
1136 | } | |
1137 | ||
b379a395 | 1138 | length -= 2; |
bdb5a5c3 | 1139 | |
1140 | /* | |
1141 | * Copy the device ID text to the beginning of the buffer and | |
1142 | * nul-terminate. | |
1143 | */ | |
1144 | ||
1145 | memmove(buffer, buffer + 2, length); | |
1146 | buffer[length] = '\0'; | |
1147 | ||
1148 | return (0); | |
1149 | } | |
1150 | ||
1151 | ||
1152 | /* | |
1153 | * 'list_cb()' - List USB printers for discovery. | |
1154 | */ | |
1155 | ||
1156 | static int /* O - 0 to continue, 1 to stop */ | |
1157 | list_cb(usb_printer_t *printer, /* I - Printer */ | |
a9800876 | 1158 | const char *device_uri, /* I - Device URI */ |
bdb5a5c3 | 1159 | const char *device_id, /* I - IEEE-1284 device ID */ |
1160 | const void *data) /* I - User data (not used) */ | |
1161 | { | |
a9800876 | 1162 | char make_model[1024]; /* Make and model */ |
bdb5a5c3 | 1163 | |
1164 | ||
1165 | /* | |
1166 | * Get the device URI and make/model strings... | |
1167 | */ | |
1168 | ||
ec1bf980 | 1169 | if (backendGetMakeModel(device_id, make_model, sizeof(make_model))) |
1170 | strlcpy(make_model, "Unknown", sizeof(make_model)); | |
bdb5a5c3 | 1171 | |
1172 | /* | |
1173 | * Report the printer... | |
1174 | */ | |
1175 | ||
2317ac1e | 1176 | cupsBackendReport("direct", device_uri, make_model, make_model, device_id, |
1177 | NULL); | |
bdb5a5c3 | 1178 | |
1179 | /* | |
1180 | * Keep going... | |
1181 | */ | |
1182 | ||
1183 | return (0); | |
1184 | } | |
1185 | ||
1186 | ||
1187 | /* | |
1188 | * 'make_device_uri()' - Create a device URI for a USB printer. | |
1189 | */ | |
1190 | ||
1191 | static char * /* O - Device URI */ | |
1192 | make_device_uri( | |
1193 | usb_printer_t *printer, /* I - Printer */ | |
1194 | const char *device_id, /* I - IEEE-1284 device ID */ | |
1195 | char *uri, /* I - Device URI buffer */ | |
1196 | size_t uri_size) /* I - Size of device URI buffer */ | |
1197 | { | |
ec1bf980 | 1198 | struct libusb_device_descriptor devdesc; |
1199 | /* Current device descriptor */ | |
bdb5a5c3 | 1200 | char options[1024]; /* Device URI options */ |
1201 | int num_values; /* Number of 1284 parameters */ | |
1202 | cups_option_t *values; /* 1284 parameters */ | |
1203 | const char *mfg, /* Manufacturer */ | |
1204 | *mdl, /* Model */ | |
ec1bf980 | 1205 | *des = NULL, /* Description */ |
bdb5a5c3 | 1206 | *sern; /* Serial number */ |
e12eaada | 1207 | size_t mfglen; /* Length of manufacturer string */ |
a9800876 | 1208 | char tempmfg[256], /* Temporary manufacturer string */ |
1209 | tempsern[256], /* Temporary serial number string */ | |
bdb5a5c3 | 1210 | *tempptr; /* Pointer into temp string */ |
1211 | ||
1212 | ||
1213 | /* | |
1214 | * Get the make, model, and serial numbers... | |
1215 | */ | |
1216 | ||
2256cc12 | 1217 | num_values = _cupsGet1284Values(device_id, &values); |
bdb5a5c3 | 1218 | |
1219 | if ((sern = cupsGetOption("SERIALNUMBER", num_values, values)) == NULL) | |
1220 | if ((sern = cupsGetOption("SERN", num_values, values)) == NULL) | |
a10c87db | 1221 | if ((sern = cupsGetOption("SN", num_values, values)) == NULL && |
25d7dad9 | 1222 | ((libusb_get_device_descriptor(printer->device, &devdesc) >= 0) && |
ec1bf980 | 1223 | devdesc.iSerialNumber)) |
a9800876 | 1224 | { |
1225 | /* | |
1226 | * Try getting the serial number from the device itself... | |
1227 | */ | |
1228 | ||
ec1bf980 | 1229 | int length = |
1230 | libusb_get_string_descriptor_ascii(printer->handle, | |
1231 | devdesc.iSerialNumber, | |
1232 | (unsigned char *)tempsern, | |
1233 | sizeof(tempsern) - 1); | |
a9800876 | 1234 | if (length > 0) |
1235 | { | |
1236 | tempsern[length] = '\0'; | |
1237 | sern = tempsern; | |
1238 | } | |
1239 | } | |
bdb5a5c3 | 1240 | |
1241 | if ((mfg = cupsGetOption("MANUFACTURER", num_values, values)) == NULL) | |
1242 | mfg = cupsGetOption("MFG", num_values, values); | |
1243 | ||
1244 | if ((mdl = cupsGetOption("MODEL", num_values, values)) == NULL) | |
1245 | mdl = cupsGetOption("MDL", num_values, values); | |
1246 | ||
a9800876 | 1247 | /* |
1248 | * To maintain compatibility with the original character device backend on | |
1249 | * Linux and *BSD, map manufacturer names... | |
1250 | */ | |
1251 | ||
bdb5a5c3 | 1252 | if (mfg) |
1253 | { | |
c6fab96f | 1254 | if (!_cups_strcasecmp(mfg, "Hewlett-Packard")) |
bdb5a5c3 | 1255 | mfg = "HP"; |
c6fab96f | 1256 | else if (!_cups_strcasecmp(mfg, "Lexmark International")) |
bdb5a5c3 | 1257 | mfg = "Lexmark"; |
1258 | } | |
1259 | else | |
1260 | { | |
1261 | /* | |
1262 | * No manufacturer? Use the model string or description... | |
1263 | */ | |
1264 | ||
1265 | if (mdl) | |
a9800876 | 1266 | _ppdNormalizeMakeAndModel(mdl, tempmfg, sizeof(tempmfg)); |
bdb5a5c3 | 1267 | else if ((des = cupsGetOption("DESCRIPTION", num_values, values)) != NULL || |
1268 | (des = cupsGetOption("DES", num_values, values)) != NULL) | |
a9800876 | 1269 | _ppdNormalizeMakeAndModel(des, tempmfg, sizeof(tempmfg)); |
bdb5a5c3 | 1270 | else |
a9800876 | 1271 | strlcpy(tempmfg, "Unknown", sizeof(tempmfg)); |
bdb5a5c3 | 1272 | |
a9800876 | 1273 | if ((tempptr = strchr(tempmfg, ' ')) != NULL) |
bdb5a5c3 | 1274 | *tempptr = '\0'; |
1275 | ||
a9800876 | 1276 | mfg = tempmfg; |
bdb5a5c3 | 1277 | } |
1278 | ||
ec1bf980 | 1279 | if (!mdl) |
1280 | { | |
1281 | /* | |
1282 | * No model? Use description... | |
1283 | */ | |
1284 | if (des) | |
1285 | mdl = des; /* We remove the manufacturer name below */ | |
1286 | else if (!strncasecmp(mfg, "Unknown", 7)) | |
1287 | mdl = "Printer"; | |
1288 | else | |
1289 | mdl = "Unknown Model"; | |
1290 | } | |
1291 | ||
e12eaada | 1292 | mfglen = strlen(mfg); |
1293 | ||
1294 | if (!strncasecmp(mdl, mfg, mfglen) && _cups_isspace(mdl[mfglen])) | |
1295 | { | |
1296 | mdl += mfglen + 1; | |
1297 | ||
1298 | while (_cups_isspace(*mdl)) | |
1299 | mdl ++; | |
1300 | } | |
1301 | ||
bdb5a5c3 | 1302 | /* |
1303 | * Generate the device URI from the manufacturer, model, serial number, | |
1304 | * and interface number... | |
1305 | */ | |
1306 | ||
1307 | if (sern) | |
1308 | { | |
1309 | if (printer->iface > 0) | |
1310 | snprintf(options, sizeof(options), "?serial=%s&interface=%d", sern, | |
1311 | printer->iface); | |
1312 | else | |
1313 | snprintf(options, sizeof(options), "?serial=%s", sern); | |
1314 | } | |
1315 | else if (printer->iface > 0) | |
1316 | snprintf(options, sizeof(options), "?interface=%d", printer->iface); | |
1317 | else | |
1318 | options[0] = '\0'; | |
1319 | ||
1320 | httpAssembleURIf(HTTP_URI_CODING_ALL, uri, uri_size, "usb", NULL, mfg, 0, | |
1321 | "/%s%s", mdl, options); | |
1322 | ||
1323 | cupsFreeOptions(num_values, values); | |
1324 | ||
1325 | return (uri); | |
1326 | } | |
1327 | ||
1328 | ||
1329 | /* | |
1330 | * 'open_device()' - Open a connection to the USB printer. | |
1331 | */ | |
1332 | ||
1333 | static int /* O - 0 on success, -1 on error */ | |
a9800876 | 1334 | open_device(usb_printer_t *printer, /* I - Printer */ |
1335 | int verbose) /* I - Update connecting-to-device state? */ | |
bdb5a5c3 | 1336 | { |
ec1bf980 | 1337 | struct libusb_device_descriptor devdesc; |
137fa46b | 1338 | /* Current device descriptor */ |
ec1bf980 | 1339 | struct libusb_config_descriptor *confptr = NULL; |
137fa46b | 1340 | /* Pointer to current configuration */ |
ec1bf980 | 1341 | int number1 = -1, /* Configuration/interface/altset */ |
137fa46b | 1342 | number2 = -1, /* numbers */ |
1343 | errcode = 0; | |
b529ea47 | 1344 | char current; /* Current configuration */ |
bdb5a5c3 | 1345 | |
1346 | ||
1347 | /* | |
1348 | * Return immediately if we are already connected... | |
1349 | */ | |
1350 | ||
1351 | if (printer->handle) | |
1352 | return (0); | |
1353 | ||
1354 | /* | |
1355 | * Try opening the printer... | |
1356 | */ | |
1357 | ||
2fa42ed2 | 1358 | if ((errcode = libusb_open(printer->device, &printer->handle)) < 0) |
1359 | { | |
1360 | fprintf(stderr, "DEBUG: Failed to open device, code: %d\n", | |
1361 | errcode); | |
bdb5a5c3 | 1362 | return (-1); |
2fa42ed2 | 1363 | } |
bdb5a5c3 | 1364 | |
e1007334 | 1365 | printer->usblp_attached = 0; |
8fa16503 | 1366 | printer->reset_after_job = 0; |
e1007334 | 1367 | |
b529ea47 | 1368 | if (verbose) |
1369 | fputs("STATE: +connecting-to-device\n", stderr); | |
1370 | ||
2fa42ed2 | 1371 | if ((errcode = libusb_get_device_descriptor(printer->device, &devdesc)) < 0) |
e1007334 | 1372 | { |
1373 | fprintf(stderr, "DEBUG: Failed to get device descriptor, code: %d\n", | |
1374 | errcode); | |
1375 | goto error; | |
1376 | } | |
1377 | ||
1378 | /* | |
1379 | * Get the "usblp" kernel module out of the way. This backend only | |
1380 | * works without the module attached. | |
1381 | */ | |
1382 | ||
1383 | errcode = libusb_kernel_driver_active(printer->handle, printer->iface); | |
1384 | if (errcode == 0) | |
1385 | printer->usblp_attached = 0; | |
1386 | else if (errcode == 1) | |
1387 | { | |
1388 | printer->usblp_attached = 1; | |
1389 | if ((errcode = | |
1390 | libusb_detach_kernel_driver(printer->handle, printer->iface)) < 0) | |
1391 | { | |
1392 | fprintf(stderr, "DEBUG: Failed to detach \"usblp\" module from %04x:%04x\n", | |
1393 | devdesc.idVendor, devdesc.idProduct); | |
1394 | goto error; | |
1395 | } | |
1396 | } | |
1397 | else | |
1398 | { | |
1399 | printer->usblp_attached = 0; | |
2fa42ed2 | 1400 | fprintf(stderr, "DEBUG: Failed to check whether %04x:%04x has the \"usblp\" kernel module attached\n", |
1401 | devdesc.idVendor, devdesc.idProduct); | |
1402 | goto error; | |
e1007334 | 1403 | } |
1404 | ||
bdb5a5c3 | 1405 | /* |
b529ea47 | 1406 | * Set the desired configuration, but only if it needs changing. Some |
137fa46b | 1407 | * printers (e.g., Samsung) don't like libusb_set_configuration. It will |
ec1bf980 | 1408 | * succeed, but the following print job is sometimes silently lost by the |
1409 | * printer. | |
bdb5a5c3 | 1410 | */ |
1411 | ||
ec1bf980 | 1412 | if (libusb_control_transfer(printer->handle, |
137fa46b | 1413 | LIBUSB_REQUEST_TYPE_STANDARD | LIBUSB_ENDPOINT_IN | |
1414 | LIBUSB_RECIPIENT_DEVICE, | |
1415 | 8, /* GET_CONFIGURATION */ | |
1416 | 0, 0, (unsigned char *)¤t, 1, 5000) < 0) | |
1417 | current = 0; /* Assume not configured */ | |
1418 | ||
2fa42ed2 | 1419 | printer->origconf = current; |
1420 | ||
a674809b | 1421 | if ((errcode = |
5adb84f8 | 1422 | libusb_get_config_descriptor (printer->device, printer->conf, &confptr)) |
1423 | < 0) | |
1424 | { | |
1425 | fprintf(stderr, "DEBUG: Failed to get config descriptor for %04x:%04x\n", | |
1426 | devdesc.idVendor, devdesc.idProduct); | |
1427 | goto error; | |
1428 | } | |
ec1bf980 | 1429 | number1 = confptr->bConfigurationValue; |
1430 | ||
1431 | if (number1 != current) | |
bdb5a5c3 | 1432 | { |
a674809b | 1433 | fprintf(stderr, "DEBUG: Switching USB device configuration: %d -> %d\n", |
2fa42ed2 | 1434 | current, number1); |
ec1bf980 | 1435 | if ((errcode = libusb_set_configuration(printer->handle, number1)) < 0) |
b529ea47 | 1436 | { |
1437 | /* | |
1438 | * If the set fails, chances are that the printer only supports a | |
1439 | * single configuration. Technically these printers don't conform to | |
1440 | * the USB printer specification, but otherwise they'll work... | |
1441 | */ | |
7e734dcc | 1442 | |
ec1bf980 | 1443 | if (errcode != LIBUSB_ERROR_BUSY) |
b529ea47 | 1444 | fprintf(stderr, "DEBUG: Failed to set configuration %d for %04x:%04x\n", |
137fa46b | 1445 | number1, devdesc.idVendor, devdesc.idProduct); |
b529ea47 | 1446 | } |
bdb5a5c3 | 1447 | } |
1448 | ||
ec1bf980 | 1449 | /* |
1450 | * Claim interfaces as needed... | |
1451 | */ | |
1452 | ||
1453 | number1 = confptr->interface[printer->iface]. | |
137fa46b | 1454 | altsetting[printer->altset].bInterfaceNumber; |
ec1bf980 | 1455 | |
1456 | while ((errcode = libusb_claim_interface(printer->handle, number1)) < 0) | |
1457 | { | |
1458 | if (errcode != LIBUSB_ERROR_BUSY) | |
e1007334 | 1459 | { |
137fa46b | 1460 | fprintf(stderr, |
1461 | "DEBUG: Failed to claim interface %d for %04x:%04x: %s\n", | |
ec1bf980 | 1462 | number1, devdesc.idVendor, devdesc.idProduct, strerror(errno)); |
bdb5a5c3 | 1463 | |
e1007334 | 1464 | goto error; |
1465 | } | |
bdb5a5c3 | 1466 | } |
1467 | ||
bdb5a5c3 | 1468 | /* |
137fa46b | 1469 | * Set alternate setting, but only if there is more than one option. Some |
1470 | * printers (e.g., Samsung) don't like usb_set_altinterface. | |
bdb5a5c3 | 1471 | */ |
1472 | ||
ec1bf980 | 1473 | if (confptr->interface[printer->iface].num_altsetting > 1) |
bdb5a5c3 | 1474 | { |
ec1bf980 | 1475 | number1 = confptr->interface[printer->iface]. |
137fa46b | 1476 | altsetting[printer->altset].bInterfaceNumber; |
ec1bf980 | 1477 | number2 = confptr->interface[printer->iface]. |
137fa46b | 1478 | altsetting[printer->altset].bAlternateSetting; |
bdb5a5c3 | 1479 | |
137fa46b | 1480 | while ((errcode = |
1481 | libusb_set_interface_alt_setting(printer->handle, number1, number2)) | |
1482 | < 0) | |
b529ea47 | 1483 | { |
ec1bf980 | 1484 | if (errcode != LIBUSB_ERROR_BUSY) |
e1007334 | 1485 | { |
b529ea47 | 1486 | fprintf(stderr, |
1487 | "DEBUG: Failed to set alternate interface %d for %04x:%04x: " | |
137fa46b | 1488 | "%s\n", |
1489 | number2, devdesc.idVendor, devdesc.idProduct, strerror(errno)); | |
b529ea47 | 1490 | |
e1007334 | 1491 | goto error; |
1492 | } | |
b529ea47 | 1493 | } |
bdb5a5c3 | 1494 | } |
137fa46b | 1495 | |
ec1bf980 | 1496 | libusb_free_config_descriptor(confptr); |
bdb5a5c3 | 1497 | |
a9800876 | 1498 | if (verbose) |
1499 | fputs("STATE: -connecting-to-device\n", stderr); | |
bdb5a5c3 | 1500 | |
1501 | return (0); | |
1502 | ||
1503 | /* | |
1504 | * If we get here, there was a hard error... | |
1505 | */ | |
1506 | ||
1507 | error: | |
1508 | ||
a9800876 | 1509 | if (verbose) |
1510 | fputs("STATE: -connecting-to-device\n", stderr); | |
bdb5a5c3 | 1511 | |
ec1bf980 | 1512 | libusb_close(printer->handle); |
bdb5a5c3 | 1513 | printer->handle = NULL; |
a9800876 | 1514 | |
bdb5a5c3 | 1515 | return (-1); |
1516 | } | |
1517 | ||
1518 | ||
1519 | /* | |
1520 | * 'print_cb()' - Find a USB printer for printing. | |
1521 | */ | |
1522 | ||
1523 | static int /* O - 0 to continue, 1 to stop (found) */ | |
1524 | print_cb(usb_printer_t *printer, /* I - Printer */ | |
a9800876 | 1525 | const char *device_uri, /* I - Device URI */ |
bdb5a5c3 | 1526 | const char *device_id, /* I - IEEE-1284 device ID */ |
1527 | const void *data) /* I - User data (make, model, S/N) */ | |
1528 | { | |
e12eaada | 1529 | char requested_uri[1024], /* Requested URI */ |
1530 | *requested_ptr, /* Pointer into requested URI */ | |
1531 | detected_uri[1024], /* Detected URI */ | |
1532 | *detected_ptr; /* Pointer into detected URI */ | |
1533 | ||
1534 | ||
1535 | /* | |
1536 | * If we have an exact match, stop now... | |
1537 | */ | |
1538 | ||
1539 | if (!strcmp((char *)data, device_uri)) | |
1540 | return (1); | |
1541 | ||
1542 | /* | |
1543 | * Work on copies of the URIs... | |
1544 | */ | |
1545 | ||
1546 | strlcpy(requested_uri, (char *)data, sizeof(requested_uri)); | |
1547 | strlcpy(detected_uri, device_uri, sizeof(detected_uri)); | |
1548 | ||
1549 | /* | |
1550 | * libusb-discovered URIs can have an "interface" specification and this | |
1551 | * never happens for usblp-discovered URIs, so remove the "interface" | |
1552 | * specification from the URI which we are checking currently. This way a | |
1553 | * queue for a usblp-discovered printer can now be accessed via libusb. | |
1554 | * | |
1555 | * Similarly, strip "?serial=NNN...NNN" as needed. | |
1556 | */ | |
1557 | ||
b92232ef | 1558 | if ((requested_ptr = strstr(requested_uri, "?interface=")) == NULL) |
1559 | requested_ptr = strstr(requested_uri, "&interface="); | |
1560 | if ((detected_ptr = strstr(detected_uri, "?interface=")) == NULL) | |
1561 | detected_ptr = strstr(detected_uri, "&interface="); | |
1562 | ||
1563 | if (!requested_ptr && detected_ptr) | |
e12eaada | 1564 | { |
1565 | /* | |
b92232ef | 1566 | * Strip "[?&]interface=nnn" from the detected printer. |
e12eaada | 1567 | */ |
1568 | ||
1569 | *detected_ptr = '\0'; | |
1570 | } | |
1571 | else if (requested_ptr && !detected_ptr) | |
1572 | { | |
1573 | /* | |
b92232ef | 1574 | * Strip "[?&]interface=nnn" from the requested printer. |
1575 | */ | |
1576 | ||
1577 | *requested_ptr = '\0'; | |
1578 | } | |
1579 | ||
1580 | if ((requested_ptr = strstr(requested_uri, "?serial=?")) != NULL) | |
1581 | { | |
1582 | /* | |
1583 | * Strip "?serial=?" from the requested printer. This is a special | |
1584 | * case, as "?serial=?" means no serial number and not the serial | |
1585 | * number '?'. This is not covered by the checks below... | |
e12eaada | 1586 | */ |
1587 | ||
1588 | *requested_ptr = '\0'; | |
1589 | } | |
1590 | ||
1591 | if ((requested_ptr = strstr(requested_uri, "?serial=")) == NULL && | |
1592 | (detected_ptr = strstr(detected_uri, "?serial=")) != NULL) | |
1593 | { | |
1594 | /* | |
1595 | * Strip "?serial=nnn" from the detected printer. | |
1596 | */ | |
1597 | ||
1598 | *detected_ptr = '\0'; | |
1599 | } | |
1600 | else if (requested_ptr && !detected_ptr) | |
1601 | { | |
1602 | /* | |
1603 | * Strip "?serial=nnn" from the requested printer. | |
1604 | */ | |
1605 | ||
1606 | *requested_ptr = '\0'; | |
1607 | } | |
1608 | ||
b92232ef | 1609 | return (!strcmp(requested_uri, detected_uri)); |
bdb5a5c3 | 1610 | } |
1611 | ||
1612 | ||
2fa42ed2 | 1613 | /* |
1614 | * 'printer_class_soft_reset()' - Do the soft reset request specific to printers | |
1615 | * | |
1616 | * This soft reset is specific to the printer device class and is much less | |
1617 | * invasive than the general USB reset libusb_reset_device(). Especially it | |
1618 | * does never happen that the USB addressing and configuration changes. What | |
1619 | * is actually done is that all buffers get flushed and the bulk IN and OUT | |
1620 | * pipes get reset to their default states. This clears all stall conditions. | |
1621 | * See http://cholla.mmto.org/computers/linux/usb/usbprint11.pdf | |
1622 | */ | |
1623 | ||
1624 | static int /* O - 0 on success, < 0 on error */ | |
1625 | printer_class_soft_reset(usb_printer_t *printer) /* I - Printer */ | |
1626 | { | |
1627 | struct libusb_config_descriptor *confptr = NULL; | |
1628 | /* Pointer to current configuration */ | |
1629 | int interface, | |
1630 | errcode; | |
1631 | ||
1632 | if (libusb_get_config_descriptor(printer->device, printer->conf, &confptr) | |
1633 | < 0) | |
1634 | interface = printer->iface; | |
1635 | else | |
1636 | interface = confptr->interface[printer->iface]. | |
1637 | altsetting[printer->altset].bInterfaceNumber; | |
1638 | libusb_free_config_descriptor(confptr); | |
1639 | if ((errcode = libusb_control_transfer(printer->handle, | |
1640 | LIBUSB_REQUEST_TYPE_CLASS | | |
1641 | LIBUSB_ENDPOINT_OUT | | |
1642 | LIBUSB_RECIPIENT_OTHER, | |
1643 | 2, 0, interface, NULL, 0, 5000)) < 0) | |
1644 | errcode = libusb_control_transfer(printer->handle, | |
1645 | LIBUSB_REQUEST_TYPE_CLASS | | |
1646 | LIBUSB_ENDPOINT_OUT | | |
1647 | LIBUSB_RECIPIENT_INTERFACE, | |
1648 | 2, 0, interface, NULL, 0, 5000); | |
1649 | return errcode; | |
1650 | } | |
1651 | ||
1652 | ||
1653 | /* | |
1654 | * 'quirks()' - Get the known quirks of a given printer model | |
1655 | */ | |
1656 | ||
1657 | static unsigned int quirks(int vendor, int product) | |
1658 | { | |
1659 | int i; | |
1660 | ||
1661 | for (i = 0; quirk_printers[i].vendorId; i++) | |
1662 | { | |
1663 | if (vendor == quirk_printers[i].vendorId && | |
8fa16503 | 1664 | (quirk_printers[i].productId == 0x0000 || |
1665 | product == quirk_printers[i].productId)) | |
2fa42ed2 | 1666 | return quirk_printers[i].quirks; |
1667 | } | |
1668 | return 0; | |
1669 | } | |
1670 | ||
1671 | ||
4828c388 | 1672 | /* |
137fa46b | 1673 | * 'read_thread()' - Thread to read the backchannel data on. |
1674 | */ | |
1675 | ||
1676 | static void *read_thread(void *reference) | |
1677 | { | |
1678 | unsigned char readbuffer[512]; | |
1679 | int rbytes; | |
1680 | int readstatus; | |
1681 | struct timeval now, | |
1682 | delay, | |
1683 | end, | |
1684 | timeleft; | |
1685 | ||
1686 | ||
1687 | (void)reference; | |
1688 | ||
1689 | /* | |
1690 | * Read frequency: once every 250 milliseconds. | |
1691 | */ | |
1692 | ||
1693 | delay.tv_sec = 0; | |
1694 | delay.tv_usec = 250000; | |
1695 | ||
1696 | do | |
1697 | { | |
1698 | /* | |
1699 | * Remember when we started so we can throttle the loop after the read | |
1700 | * call... | |
1701 | */ | |
1702 | ||
1703 | gettimeofday(&now, NULL); | |
1704 | ||
1705 | /* | |
1706 | * Calculate what 250 milliSeconds are in absolute time... | |
1707 | */ | |
1708 | ||
1709 | timeradd(&now, &delay, &end); | |
1710 | ||
1711 | rbytes = sizeof(readbuffer); | |
1712 | readstatus = libusb_bulk_transfer(g.printer->handle, | |
1713 | g.printer->read_endp, | |
1714 | readbuffer, rbytes, | |
1715 | &rbytes, 60000); | |
1716 | if (readstatus == LIBUSB_SUCCESS && rbytes > 0) | |
1717 | { | |
1718 | fprintf(stderr, "DEBUG: Read %d bytes of back-channel data...\n", | |
1719 | (int)rbytes); | |
1720 | cupsBackChannelWrite((const char *)readbuffer, rbytes, 1.0); | |
1721 | } | |
1722 | else if (readstatus == LIBUSB_ERROR_TIMEOUT) | |
1723 | fputs("DEBUG: Got USB transaction timeout during read.\n", stderr); | |
1724 | else if (readstatus == LIBUSB_ERROR_PIPE) | |
1725 | fputs("DEBUG: Got USB pipe stalled during read.\n", stderr); | |
1726 | else if (readstatus == LIBUSB_ERROR_INTERRUPTED) | |
1727 | fputs("DEBUG: Got USB return aborted during read.\n", stderr); | |
1728 | ||
1729 | /* | |
1730 | * Make sure this loop executes no more than once every 250 miliseconds... | |
1731 | */ | |
1732 | ||
1733 | if ((readstatus != LIBUSB_SUCCESS || rbytes == 0) && | |
1734 | (g.wait_eof || !g.read_thread_stop)) | |
1735 | { | |
1736 | gettimeofday(&now, NULL); | |
1737 | if (timercmp(&now, &end, <)) | |
1738 | { | |
1739 | timersub(&end, &now, &timeleft); | |
1740 | usleep(1000000 * timeleft.tv_sec + timeleft.tv_usec); | |
1741 | } | |
1742 | } | |
1743 | } while (g.wait_eof || !g.read_thread_stop); | |
1744 | ||
1745 | /* | |
1746 | * Let the main thread know that we have completed the read thread... | |
1747 | */ | |
1748 | ||
1749 | pthread_mutex_lock(&g.read_thread_mutex); | |
1750 | g.read_thread_done = 1; | |
1751 | pthread_cond_signal(&g.read_thread_cond); | |
1752 | pthread_mutex_unlock(&g.read_thread_mutex); | |
1753 | ||
1754 | return (NULL); | |
1755 | } | |
1756 | ||
1757 | ||
1758 | /* | |
1759 | * 'sidechannel_thread()' - Handle side-channel requests. | |
4828c388 | 1760 | */ |
1761 | ||
137fa46b | 1762 | static void* |
1763 | sidechannel_thread(void *reference) | |
4828c388 | 1764 | { |
4828c388 | 1765 | cups_sc_command_t command; /* Request command */ |
1766 | cups_sc_status_t status; /* Request/response status */ | |
1767 | char data[2048]; /* Request/response data */ | |
1768 | int datalen; /* Request/response data size */ | |
1769 | ||
1770 | ||
137fa46b | 1771 | (void)reference; |
4828c388 | 1772 | |
137fa46b | 1773 | do |
4828c388 | 1774 | { |
137fa46b | 1775 | datalen = sizeof(data); |
4828c388 | 1776 | |
137fa46b | 1777 | if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0)) |
1778 | { | |
1779 | if (status == CUPS_SC_STATUS_TIMEOUT) | |
1780 | continue; | |
1781 | else | |
1782 | break; | |
1783 | } | |
4828c388 | 1784 | |
137fa46b | 1785 | switch (command) |
1786 | { | |
1787 | case CUPS_SC_CMD_SOFT_RESET: /* Do a soft reset */ | |
1788 | fputs("DEBUG: CUPS_SC_CMD_SOFT_RESET received from driver...\n", | |
1789 | stderr); | |
1790 | ||
1791 | soft_reset(); | |
1792 | cupsSideChannelWrite(command, CUPS_SC_STATUS_OK, NULL, 0, 1.0); | |
1793 | fputs("DEBUG: Returning status CUPS_STATUS_OK with no bytes...\n", | |
1794 | stderr); | |
1795 | break; | |
1796 | ||
1797 | case CUPS_SC_CMD_DRAIN_OUTPUT: /* Drain all pending output */ | |
1798 | fputs("DEBUG: CUPS_SC_CMD_DRAIN_OUTPUT received from driver...\n", | |
1799 | stderr); | |
1800 | ||
1801 | g.drain_output = 1; | |
1802 | break; | |
1803 | ||
1804 | case CUPS_SC_CMD_GET_BIDI: /* Is the connection bidirectional? */ | |
1805 | fputs("DEBUG: CUPS_SC_CMD_GET_BIDI received from driver...\n", | |
1806 | stderr); | |
1807 | ||
1808 | data[0] = (g.printer->protocol >= 2 ? 1 : 0); | |
1809 | cupsSideChannelWrite(command, CUPS_SC_STATUS_OK, data, 1, 1.0); | |
1810 | ||
1811 | fprintf(stderr, | |
1812 | "DEBUG: Returned CUPS_SC_STATUS_OK with 1 byte (%02X)...\n", | |
1813 | data[0]); | |
1814 | break; | |
1815 | ||
1816 | case CUPS_SC_CMD_GET_DEVICE_ID: /* Return IEEE-1284 device ID */ | |
1817 | fputs("DEBUG: CUPS_SC_CMD_GET_DEVICE_ID received from driver...\n", | |
1818 | stderr); | |
1819 | ||
1820 | datalen = sizeof(data); | |
1821 | if (get_device_id(g.printer, data, sizeof(data))) | |
1822 | { | |
1823 | status = CUPS_SC_STATUS_IO_ERROR; | |
1824 | datalen = 0; | |
4828c388 | 1825 | } |
137fa46b | 1826 | else |
1827 | { | |
1828 | status = CUPS_SC_STATUS_OK; | |
1829 | datalen = strlen(data); | |
1830 | } | |
1831 | cupsSideChannelWrite(command, CUPS_SC_STATUS_OK, data, datalen, 1.0); | |
4828c388 | 1832 | |
137fa46b | 1833 | if (datalen < sizeof(data)) |
1834 | data[datalen] = '\0'; | |
1835 | else | |
1836 | data[sizeof(data) - 1] = '\0'; | |
4828c388 | 1837 | |
137fa46b | 1838 | fprintf(stderr, |
1839 | "DEBUG: Returning CUPS_SC_STATUS_OK with %d bytes (%s)...\n", | |
1840 | datalen, data); | |
1841 | break; | |
4828c388 | 1842 | |
137fa46b | 1843 | case CUPS_SC_CMD_GET_STATE: /* Return device state */ |
1844 | fputs("DEBUG: CUPS_SC_CMD_GET_STATE received from driver...\n", | |
1845 | stderr); | |
4828c388 | 1846 | |
137fa46b | 1847 | data[0] = CUPS_SC_STATE_ONLINE; |
1848 | cupsSideChannelWrite(command, CUPS_SC_STATUS_OK, data, 1, 1.0); | |
1849 | ||
1850 | fprintf(stderr, | |
1851 | "DEBUG: Returned CUPS_SC_STATUS_OK with 1 byte (%02X)...\n", | |
1852 | data[0]); | |
1853 | break; | |
1854 | ||
1855 | case CUPS_SC_CMD_GET_CONNECTED: /* Return whether device is | |
1856 | connected */ | |
1857 | fputs("DEBUG: CUPS_SC_CMD_GET_CONNECTED received from driver...\n", | |
1858 | stderr); | |
1859 | ||
1860 | data[0] = (g.printer->handle ? 1 : 0); | |
1861 | cupsSideChannelWrite(command, CUPS_SC_STATUS_OK, data, 1, 1.0); | |
1862 | ||
1863 | fprintf(stderr, | |
1864 | "DEBUG: Returned CUPS_SC_STATUS_OK with 1 byte (%02X)...\n", | |
1865 | data[0]); | |
1866 | break; | |
1867 | ||
1868 | default: | |
1869 | fprintf(stderr, "DEBUG: Unknown side-channel command (%d) received " | |
1870 | "from driver...\n", command); | |
4828c388 | 1871 | |
137fa46b | 1872 | cupsSideChannelWrite(command, CUPS_SC_STATUS_NOT_IMPLEMENTED, |
1873 | NULL, 0, 1.0); | |
1874 | ||
1875 | fputs("DEBUG: Returned CUPS_SC_STATUS_NOT_IMPLEMENTED with no bytes...\n", | |
1876 | stderr); | |
1877 | break; | |
1878 | } | |
1879 | } | |
1880 | while (!g.sidechannel_thread_stop); | |
1881 | ||
1882 | pthread_mutex_lock(&g.sidechannel_thread_mutex); | |
1883 | g.sidechannel_thread_done = 1; | |
1884 | pthread_cond_signal(&g.sidechannel_thread_cond); | |
1885 | pthread_mutex_unlock(&g.sidechannel_thread_mutex); | |
1886 | ||
1887 | return (NULL); | |
1888 | } | |
1889 | ||
1890 | ||
1891 | /* | |
1892 | * 'soft_reset()' - Send a soft reset to the device. | |
1893 | */ | |
1894 | ||
1895 | static void soft_reset(void) | |
1896 | { | |
1897 | fd_set input_set; /* Input set for select() */ | |
1898 | struct timeval tv; /* Time value */ | |
1899 | char buffer[2048]; /* Buffer */ | |
1900 | struct timespec cond_timeout; /* pthread condition timeout */ | |
1901 | ||
1902 | /* | |
1903 | * Send an abort once a second until the I/O lock is released by the main | |
1904 | * thread... | |
1905 | */ | |
1906 | ||
1907 | pthread_mutex_lock(&g.readwrite_lock_mutex); | |
1908 | while (g.readwrite_lock) | |
1909 | { | |
1910 | gettimeofday(&tv, NULL); | |
1911 | cond_timeout.tv_sec = tv.tv_sec + 1; | |
1912 | cond_timeout.tv_nsec = tv.tv_usec * 1000; | |
1913 | ||
1914 | while (g.readwrite_lock) | |
1915 | { | |
1916 | if (pthread_cond_timedwait(&g.readwrite_lock_cond, | |
1917 | &g.readwrite_lock_mutex, | |
1918 | &cond_timeout) != 0) | |
4828c388 | 1919 | break; |
137fa46b | 1920 | } |
4828c388 | 1921 | } |
1922 | ||
137fa46b | 1923 | g.readwrite_lock = 1; |
1924 | pthread_mutex_unlock(&g.readwrite_lock_mutex); | |
1925 | ||
1926 | /* | |
1927 | * Flush bytes waiting on print_fd... | |
1928 | */ | |
1929 | ||
1930 | g.print_bytes = 0; | |
1931 | ||
1932 | FD_ZERO(&input_set); | |
1933 | FD_SET(g.print_fd, &input_set); | |
1934 | ||
1935 | tv.tv_sec = 0; | |
1936 | tv.tv_usec = 0; | |
1937 | ||
1938 | while (select(g.print_fd+1, &input_set, NULL, NULL, &tv) > 0) | |
1939 | if (read(g.print_fd, buffer, sizeof(buffer)) <= 0) | |
1940 | break; | |
1941 | ||
1942 | /* | |
1943 | * Send the reset... | |
1944 | */ | |
1945 | ||
2fa42ed2 | 1946 | printer_class_soft_reset(g.printer); |
137fa46b | 1947 | |
1948 | /* | |
1949 | * Release the I/O lock... | |
1950 | */ | |
4828c388 | 1951 | |
137fa46b | 1952 | pthread_mutex_lock(&g.readwrite_lock_mutex); |
1953 | g.readwrite_lock = 0; | |
1954 | pthread_cond_signal(&g.readwrite_lock_cond); | |
1955 | pthread_mutex_unlock(&g.readwrite_lock_mutex); | |
4828c388 | 1956 | } |
1957 | ||
1958 | ||
bdb5a5c3 | 1959 | /* |
1960 | * End of "$Id$". | |
1961 | */ | |
1962 |