summaryrefslogtreecommitdiffstats
path: root/source3/client/smbspool.c
blob: 68165792da3df3f86f95284d67b0113485aa369f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
/* 
   Unix SMB/CIFS implementation.
   SMB backend for the Common UNIX Printing System ("CUPS")
   Copyright 1999 by Easy Software Products
   Copyright Andrew Tridgell 1994-1998
   Copyright Andrew Bartlett 2002
   
   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; either version 2 of the License, or
   (at your option) any later version.
   
   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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#define NO_SYSLOG

#include "includes.h"

/*
 * Globals...
 */

extern BOOL		in_client;	/* Boolean for client library */


/*
 * Local functions...
 */

static void		list_devices(void);
static struct cli_state	*smb_connect(const char *, const char *, const char *, const char *, const char *);
static int		smb_print(struct cli_state *, char *, FILE *);


/*
 * 'main()' - Main entry for SMB backend.
 */

 int				/* O - Exit status */
 main(int  argc,			/* I - Number of command-line arguments */
     char *argv[])		/* I - Command-line arguments */
{
  int		i;		/* Looping var */
  int		copies;		/* Number of copies */
  char		uri[1024],	/* URI */
		*sep,		/* Pointer to separator */
		*password;	/* Password */
  const char	*username,	/* Username */
		*server,	/* Server name */
		*printer;	/* Printer name */
  const char	*workgroup;	/* Workgroup */
  FILE		*fp;		/* File to print */
  int		status=0;		/* Status of LPD job */
  struct cli_state *cli;	/* SMB interface */

  /* we expect the URI in argv[0]. Detect the case where it is in argv[1] and cope */
  if (argc > 2 && strncmp(argv[0],"smb://", 6) && !strncmp(argv[1],"smb://", 6)) {
	  argv++;
	  argc--;
  }

  if (argc == 1)
  {
   /*
    * NEW!  In CUPS 1.1 the backends are run with no arguments to list the
    *       available devices.  These can be devices served by this backend
    *       or any other backends (i.e. you can have an SNMP backend that
    *       is only used to enumerate the available network printers... :)
    */

    list_devices();
    return (0);
  }

  if (argc < 6 || argc > 7)
  {
    fprintf(stderr, "Usage: %s [DEVICE_URI] job-id user title copies options [file]\n",
            argv[0]);
    fputs("       The DEVICE_URI environment variable can also contain the\n", stderr);
    fputs("       destination printer:\n", stderr);
    fputs("\n", stderr);
    fputs("           smb://[username:password@][workgroup/]server/printer\n", stderr);
    return (1);
  }

 /*
  * If we have 7 arguments, print the file named on the command-line.
  * Otherwise, print data from stdin...
  */

  if (argc == 6)
  {
   /*
    * Print from Copy stdin to a temporary file...
    */

    fp     = stdin;
    copies = 1;
  }
  else if ((fp = fopen(argv[6], "rb")) == NULL)
  {
    perror("ERROR: Unable to open print file");
    return (1);
  }
  else
    copies = atoi(argv[4]);

 /*
  * Find the URI...
  */

  if (strncmp(argv[0], "smb://", 6) == 0)
    strncpy(uri, argv[0], sizeof(uri) - 1);
  else if (getenv("DEVICE_URI") != NULL)
    strncpy(uri, getenv("DEVICE_URI"), sizeof(uri) - 1);
  else
  {
    fputs("ERROR: No device URI found in argv[0] or DEVICE_URI environment variable!\n", stderr);
    return (1);
  }

  uri[sizeof(uri) - 1] = '\0';

 /*
  * Extract the destination from the URI...
  */

  if ((sep = strrchr_m(uri, '@')) != NULL)
  {
    username = uri + 6;
    *sep++ = '\0';

    server = sep;

   /*
    * Extract password as needed...
    */

    if ((password = strchr_m(username, ':')) != NULL)
      *password++ = '\0';
    else
      password = "";
  }
  else
  {
    username = "";
    password = "";
    server   = uri + 6;
  }

  if ((sep = strchr_m(server, '/')) == NULL)
  {
    fputs("ERROR: Bad URI - need printer name!\n", stderr);
    return (1);
  }

  *sep++ = '\0';
  printer = sep;

  if ((sep = strchr_m(printer, '/')) != NULL)
  {
   /*
    * Convert to smb://[username:password@]workgroup/server/printer...
    */

    *sep++ = '\0';

    workgroup = server;
    server    = printer;
    printer   = sep;
  }
  else
    workgroup = NULL;

 /*
  * Setup the SAMBA server state...
  */

  setup_logging("smbspool", True);

  in_client = True;   /* Make sure that we tell lp_load we are */

  if (!lp_load(dyn_CONFIGFILE, True, False, False))
  {
    fprintf(stderr, "ERROR: Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
    return (1);
  }

  if (workgroup == NULL)
    workgroup = lp_workgroup();

  load_interfaces();

  do
  {
    if ((cli = smb_connect(workgroup, server, printer, username, password)) == NULL)
    {
      if (getenv("CLASS") == NULL)
      {
        fprintf(stderr, "ERROR: Unable to connect to SAMBA host, will retry in 60 seconds...");
        sleep (60);
      }
      else
      {
        fprintf(stderr, "ERROR: Unable to connect to SAMBA host, trying next printer...");
        return (1);
      }
    }
  }
  while (cli == NULL);

 /*
  * Now that we are connected to the server, ignore SIGTERM so that we
  * can finish out any page data the driver sends (e.g. to eject the
  * current page...  Only ignore SIGTERM if we are printing data from
  * stdin (otherwise you can't cancel raw jobs...)
  */

  if (argc < 7)
    CatchSignal(SIGTERM, SIG_IGN);

 /*
  * Queue the job...
  */

  for (i = 0; i < copies; i ++)
    if ((status = smb_print(cli, argv[3] /* title */, fp)) != 0)
      break;

  cli_shutdown(cli);

 /*
  * Return the queue status...
  */

  return (status);
}


/*
 * 'list_devices()' - List the available printers seen on the network...
 */

static void
list_devices(void)
{
 /*
  * Eventually, search the local workgroup for available hosts and printers.
  */

  puts("network smb \"Unknown\" \"Windows Printer via SAMBA\"");
}


/*
 * 'smb_connect()' - Return a connection to a server.
 */

static struct cli_state *		/* O - SMB connection */
smb_connect(const char *workgroup,		/* I - Workgroup */
            const char *server,		/* I - Server */
            const char *share,		/* I - Printer */
            const char *username,		/* I - Username */
            const char *password)		/* I - Password */
{
  struct cli_state	*c;		/* New connection */
  pstring		myname;		/* Client name */
  NTSTATUS nt_status;

 /*
  * Get the names and addresses of the client and server...
  */

  get_myname(myname);  
  	
  nt_status = cli_full_connection(&c, myname, server, NULL, 0, share, "?????", 
				  username, workgroup, password, 0, NULL);
  
  if (!NT_STATUS_IS_OK(nt_status)) {
	  fprintf(stderr, "ERROR:  Connection failed with error %s\n", nt_errstr(nt_status));
	  return NULL;
  }

  /*
   * Return the new connection...
   */
  
  return (c);
}


/*
 * 'smb_print()' - Queue a job for printing using the SMB protocol.
 */

static int				/* O - 0 = success, non-0 = failure */
smb_print(struct cli_state *cli,	/* I - SMB connection */
          char             *title,	/* I - Title/job name */
          FILE             *fp)		/* I - File to print */
{
  int	fnum;		/* File number */
  int	nbytes,		/* Number of bytes read */
	tbytes;		/* Total bytes read */
  char	buffer[8192],	/* Buffer for copy */
	*ptr;		/* Pointer into tile */


 /*
  * Sanitize the title...
  */

  for (ptr = title; *ptr; ptr ++)
    if (!isalnum((int)*ptr) && !isspace((int)*ptr))
      *ptr = '_';

 /*
  * Open the printer device...
  */

  if ((fnum = cli_open(cli, title, O_RDWR | O_CREAT | O_TRUNC, DENY_NONE)) == -1)
  {
    fprintf(stderr, "ERROR: %s opening remote file %s\n",
            cli_errstr(cli), title);
    return (1);
  }

 /*
  * Copy the file to the printer...
  */

  if (fp != stdin)
    rewind(fp);

  tbytes = 0;

  while ((nbytes = fread(buffer, 1, sizeof(buffer), fp)) > 0)
  {
    if (cli_write(cli, fnum, 0, buffer, tbytes, nbytes) != nbytes)
    {
      fprintf(stderr, "ERROR: Error writing file: %s\n", cli_errstr(cli));
      break;
    }

    tbytes += nbytes;
  } 

  if (!cli_close(cli, fnum))
  {
    fprintf(stderr, "ERROR: %s closing remote file %s\n",
            cli_errstr(cli), title);
    return (1);
  }
  else
    return (0);
}