source/client/smbspool.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB backend for the Common UNIX Printing System ("CUPS")
   4    Copyright 1999 by Easy Software Products
   5    Copyright Andrew Tridgell 1994-1998
   6    Copyright Andrew Bartlett 2002
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #define NO_SYSLOG
  24
  25 #include "includes.h"
  26
  27 /*
  28  * Globals...
  29  */
  30
  31 extern BOOL             in_client;      /* Boolean for client library */
  32
  33
  34 /*
  35  * Local functions...
  36  */
  37
  38 static void             list_devices(void);
  39 static struct cli_state *smb_connect(char *, char *, char *, char *, char *);
  40 static int              smb_print(struct cli_state *, char *, FILE *);
  41
  42
  43 /*
  44  * 'main()' - Main entry for SMB backend.
  45  */
  46
  47  int                            /* O - Exit status */
  48  main(int  argc,                        /* I - Number of command-line arguments */
  49      char *argv[])              /* I - Command-line arguments */
  50 {
  51   int           i;              /* Looping var */
  52   int           copies;         /* Number of copies */
  53   char          uri[1024],      /* URI */
  54                 *sep,           /* Pointer to separator */
  55                 *username,      /* Username */
  56                 *password,      /* Password */
  57                 *workgroup,     /* Workgroup */
  58                 *server,        /* Server name */
  59                 *printer;       /* Printer name */
  60   FILE          *fp;            /* File to print */
  61   int           status=0;               /* Status of LPD job */
  62   struct cli_state *cli;        /* SMB interface */
  63
  64   /* we expect the URI in argv[0]. Detect the case where it is in argv[1] and cope */
  65   if (argc > 2 && strncmp(argv[0],"smb://", 6) && !strncmp(argv[1],"smb://", 6)) {
  66           argv++;
  67           argc--;
  68   }
  69
  70   if (argc == 1)
  71   {
  72    /*
  73     * NEW!  In CUPS 1.1 the backends are run with no arguments to list the
  74     *       available devices.  These can be devices served by this backend
  75     *       or any other backends (i.e. you can have an SNMP backend that
  76     *       is only used to enumerate the available network printers... :)
  77     */
  78
  79     list_devices();
  80     return (0);
  81   }
  82
  83   if (argc < 6 || argc > 7)
  84   {
  85     fprintf(stderr, "Usage: %s [DEVICE_URI] job-id user title copies options [file]\n",
  86             argv[0]);
  87     fputs("       The DEVICE_URI environment variable can also contain the\n", stderr);
  88     fputs("       destination printer:\n", stderr);
  89     fputs("\n", stderr);
  90     fputs("           smb://[username:password@][workgroup/]server/printer\n", stderr);
  91     return (1);
  92   }
  93
  94  /*
  95   * If we have 7 arguments, print the file named on the command-line.
  96   * Otherwise, print data from stdin...
  97   */
  98
  99   if (argc == 6)
 100   {
 101    /*
 102     * Print from Copy stdin to a temporary file...
 103     */
 104
 105     fp     = stdin;
 106     copies = 1;
 107   }
 108   else if ((fp = fopen(argv[6], "rb")) == NULL)
 109   {
 110     perror("ERROR: Unable to open print file");
 111     return (1);
 112   }
 113   else
 114     copies = atoi(argv[4]);
 115
 116  /*
 117   * Find the URI...
 118   */
 119
 120   if (strncmp(argv[0], "smb://", 6) == 0)
 121     strncpy(uri, argv[0], sizeof(uri) - 1);
 122   else if (getenv("DEVICE_URI") != NULL)
 123     strncpy(uri, getenv("DEVICE_URI"), sizeof(uri) - 1);
 124   else
 125   {
 126     fputs("ERROR: No device URI found in argv[0] or DEVICE_URI environment variable!\n", stderr);
 127     return (1);
 128   }
 129
 130   uri[sizeof(uri) - 1] = '\0';
 131
 132  /*
 133   * Extract the destination from the URI...
 134   */
 135
 136   if ((sep = strrchr_m(uri, '@')) != NULL)
 137   {
 138     username = uri + 6;
 139     *sep++ = '\0';
 140
 141     server = sep;
 142
 143    /*
 144     * Extract password as needed...
 145     */
 146
 147     if ((password = strchr_m(username, ':')) != NULL)
 148       *password++ = '\0';
 149     else
 150       password = "";
 151   }
 152   else
 153   {
 154     username = "";
 155     password = "";
 156     server   = uri + 6;
 157   }
 158
 159   if ((sep = strchr_m(server, '/')) == NULL)
 160   {
 161     fputs("ERROR: Bad URI - need printer name!\n", stderr);
 162     return (1);
 163   }
 164
 165   *sep++ = '\0';
 166   printer = sep;
 167
 168   if ((sep = strchr_m(printer, '/')) != NULL)
 169   {
 170    /*
 171     * Convert to smb://[username:password@]workgroup/server/printer...
 172     */
 173
 174     *sep++ = '\0';
 175
 176     workgroup = server;
 177     server    = printer;
 178     printer   = sep;
 179   }
 180   else
 181     workgroup = NULL;
 182
 183  /*
 184   * Setup the SAMBA server state...
 185   */
 186
 187   setup_logging("smbspool", True);
 188
 189   in_client = True;   /* Make sure that we tell lp_load we are */
 190
 191   if (!lp_load(dyn_CONFIGFILE, True, False, False))
 192   {
 193     fprintf(stderr, "ERROR: Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
 194     return (1);
 195   }
 196
 197   if (workgroup == NULL)
 198     workgroup = lp_workgroup();
 199
 200   load_interfaces();
 201
 202   do
 203   {
 204     if ((cli = smb_connect(workgroup, server, printer, username, password)) == NULL)
 205     {
 206       if (getenv("CLASS") == NULL)
 207       {
 208         perror("ERROR: Unable to connect to SAMBA host, will retry in 60 seconds...");
 209         sleep (60);
 210       }
 211       else
 212       {
 213         perror("ERROR: Unable to connect to SAMBA host, trying next printer...");
 214         return (1);
 215       }
 216     }
 217   }
 218   while (cli == NULL);
 219
 220  /*
 221   * Now that we are connected to the server, ignore SIGTERM so that we
 222   * can finish out any page data the driver sends (e.g. to eject the
 223   * current page...  Only ignore SIGTERM if we are printing data from
 224   * stdin (otherwise you can't cancel raw jobs...)
 225   */
 226
 227   if (argc < 7)
 228     CatchSignal(SIGTERM, SIG_IGN);
 229
 230  /*
 231   * Queue the job...
 232   */
 233
 234   for (i = 0; i < copies; i ++)
 235     if ((status = smb_print(cli, argv[3] /* title */, fp)) != 0)
 236       break;
 237
 238   cli_shutdown(cli);
 239
 240  /*
 241   * Return the queue status...
 242   */
 243
 244   return (status);
 245 }
 246
 247
 248 /*
 249  * 'list_devices()' - List the available printers seen on the network...
 250  */
 251
 252 static void
 253 list_devices(void)
 254 {
 255  /*
 256   * Eventually, search the local workgroup for available hosts and printers.
 257   */
 258
 259   puts("network smb \"Unknown\" \"Windows Printer via SAMBA\"");
 260 }
 261
 262
 263 /*
 264  * 'smb_connect()' - Return a connection to a server.
 265  */
 266
 267 static struct cli_state *               /* O - SMB connection */
 268 smb_connect(char *workgroup,            /* I - Workgroup */
 269             char *server,               /* I - Server */
 270             char *share,                /* I - Printer */
 271             char *username,             /* I - Username */
 272             char *password)             /* I - Password */
 273 {
 274   struct cli_state      *c;             /* New connection */
 275   pstring               myname;         /* Client name */
 276   NTSTATUS nt_status;
 277
 278  /*
 279   * Get the names and addresses of the client and server...
 280   */
 281
 282   get_myname(myname);
 283
 284   nt_status = cli_full_connection(&c, myname, server, NULL, 0, share, "?????",
 285                                   username, workgroup, password, 0);
 286
 287   if (!NT_STATUS_IS_OK(nt_status)) {
 288           fprintf(stderr, "ERROR:  Connection failed with error %s\n", nt_errstr(nt_status));
 289           return NULL;
 290   }
 291
 292   /*
 293    * Return the new connection...
 294    */
 295
 296   return (c);
 297 }
 298
 299
 300 /*
 301  * 'smb_print()' - Queue a job for printing using the SMB protocol.
 302  */
 303
 304 static int                              /* O - 0 = success, non-0 = failure */
 305 smb_print(struct cli_state *cli,        /* I - SMB connection */
 306           char             *title,      /* I - Title/job name */
 307           FILE             *fp)         /* I - File to print */
 308 {
 309   int   fnum;           /* File number */
 310   int   nbytes,         /* Number of bytes read */
 311         tbytes;         /* Total bytes read */
 312   char  buffer[8192],   /* Buffer for copy */
 313         *ptr;           /* Pointer into tile */
 314
 315
 316  /*
 317   * Sanitize the title...
 318   */
 319
 320   for (ptr = title; *ptr; ptr ++)
 321     if (!isalnum((int)*ptr) && !isspace((int)*ptr))
 322       *ptr = '_';
 323
 324  /*
 325   * Open the printer device...
 326   */
 327
 328   if ((fnum = cli_open(cli, title, O_RDWR | O_CREAT | O_TRUNC, DENY_NONE)) == -1)
 329   {
 330     fprintf(stderr, "ERROR: %s opening remote file %s\n",
 331             cli_errstr(cli), title);
 332     return (1);
 333   }
 334
 335  /*
 336   * Copy the file to the printer...
 337   */
 338
 339   if (fp != stdin)
 340     rewind(fp);
 341
 342   tbytes = 0;
 343
 344   while ((nbytes = fread(buffer, 1, sizeof(buffer), fp)) > 0)
 345   {
 346     if (cli_write(cli, fnum, 0, buffer, tbytes, nbytes) != nbytes)
 347     {
 348       fprintf(stderr, "ERROR: Error writing file: %s\n", cli_errstr(cli));
 349       break;
 350     }
 351
 352     tbytes += nbytes;
 353   }
 354
 355   if (!cli_close(cli, fnum))
 356   {
 357     fprintf(stderr, "ERROR: %s closing remote file %s\n",
 358             cli_errstr(cli), title);
 359     return (1);
 360   }
 361   else
 362     return (0);
 363 }