source/client/smbspool.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0.
   4    SMB backend for the Common UNIX Printing System ("CUPS")
   5    Copyright 1999 by Easy Software Products
   6    Copyright Andrew Tridgell 1994-1998
   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 extern struct in_addr   ipzero;         /* Any address */
  33
  34
  35 /*
  36  * Local functions...
  37  */
  38
  39 static void             list_devices(void);
  40 static struct cli_state *smb_connect(char *, char *, char *, char *, char *);
  41 static int              smb_print(struct cli_state *, char *, FILE *);
  42
  43
  44 /*
  45  * 'main()' - Main entry for SMB backend.
  46  */
  47
  48  int                            /* O - Exit status */
  49  main(int  argc,                        /* I - Number of command-line arguments */
  50      char *argv[])              /* I - Command-line arguments */
  51 {
  52   int           i;              /* Looping var */
  53   int           copies;         /* Number of copies */
  54   char          uri[1024],      /* URI */
  55                 *sep,           /* Pointer to separator */
  56                 *username,      /* Username */
  57                 *password,      /* Password */
  58                 *workgroup,     /* Workgroup */
  59                 *server,        /* Server name */
  60                 *printer;       /* Printer name */
  61   FILE          *fp;            /* File to print */
  62   int           status=0;               /* Status of LPD job */
  63   struct cli_state *cli;        /* SMB interface */
  64
  65   /* we expect the URI in argv[0]. Detect the case where it is in argv[1] and cope */
  66   if (argc > 2 && strncmp(argv[0],"smb://", 6) && !strncmp(argv[1],"smb://", 6)) {
  67           argv++;
  68           argc--;
  69   }
  70
  71   if (argc == 1)
  72   {
  73    /*
  74     * NEW!  In CUPS 1.1 the backends are run with no arguments to list the
  75     *       available devices.  These can be devices served by this backend
  76     *       or any other backends (i.e. you can have an SNMP backend that
  77     *       is only used to enumerate the available network printers... :)
  78     */
  79
  80     list_devices();
  81     return (0);
  82   }
  83
  84   if (argc < 6 || argc > 7)
  85   {
  86     fprintf(stderr, "Usage: %s [DEVICE_URI] job-id user title copies options [file]\n",
  87             argv[0]);
  88     fputs("       The DEVICE_URI environment variable can also contain the\n", stderr);
  89     fputs("       destination printer:\n", stderr);
  90     fputs("\n", stderr);
  91     fputs("           smb://[username:password@][workgroup/]server/printer\n", stderr);
  92     return (1);
  93   }
  94
  95  /*
  96   * If we have 7 arguments, print the file named on the command-line.
  97   * Otherwise, print data from stdin...
  98   */
  99
 100   if (argc == 6)
 101   {
 102    /*
 103     * Print from Copy stdin to a temporary file...
 104     */
 105
 106     fp     = stdin;
 107     copies = 1;
 108   }
 109   else if ((fp = fopen(argv[6], "rb")) == NULL)
 110   {
 111     perror("ERROR: Unable to open print file");
 112     return (1);
 113   }
 114   else
 115     copies = atoi(argv[4]);
 116
 117  /*
 118   * Find the URI...
 119   */
 120
 121   if (strncmp(argv[0], "smb://", 6) == 0)
 122     strncpy(uri, argv[0], sizeof(uri) - 1);
 123   else if (getenv("DEVICE_URI") != NULL)
 124     strncpy(uri, getenv("DEVICE_URI"), sizeof(uri) - 1);
 125   else
 126   {
 127     fputs("ERROR: No device URI found in argv[0] or DEVICE_URI environment variable!\n", stderr);
 128     return (1);
 129   }
 130
 131   uri[sizeof(uri) - 1] = '\0';
 132
 133  /*
 134   * Extract the destination from the URI...
 135   */
 136
 137   if ((sep = strrchr_m(uri, '@')) != NULL)
 138   {
 139     username = uri + 6;
 140     *sep++ = '\0';
 141
 142     server = sep;
 143
 144    /*
 145     * Extract password as needed...
 146     */
 147
 148     if ((password = strchr_m(username, ':')) != NULL)
 149       *password++ = '\0';
 150     else
 151       password = "";
 152   }
 153   else
 154   {
 155     username = "";
 156     password = "";
 157     server   = uri + 6;
 158   }
 159
 160   if ((sep = strchr_m(server, '/')) == NULL)
 161   {
 162     fputs("ERROR: Bad URI - need printer name!\n", stderr);
 163     return (1);
 164   }
 165
 166   *sep++ = '\0';
 167   printer = sep;
 168
 169   if ((sep = strchr_m(printer, '/')) != NULL)
 170   {
 171    /*
 172     * Convert to smb://[username:password@]workgroup/server/printer...
 173     */
 174
 175     *sep++ = '\0';
 176
 177     workgroup = server;
 178     server    = printer;
 179     printer   = sep;
 180   }
 181   else
 182     workgroup = NULL;
 183
 184  /*
 185   * Setup the SAMBA server state...
 186   */
 187
 188   setup_logging("smbspool", True);
 189
 190   TimeInit();
 191
 192   in_client = True;   /* Make sure that we tell lp_load we are */
 193
 194   if (!lp_load(CONFIGFILE, True, False, False))
 195   {
 196     fprintf(stderr, "ERROR: Can't load %s - run testparm to debug it\n", CONFIGFILE);
 197     return (1);
 198   }
 199
 200   if (workgroup == NULL)
 201     workgroup = lp_workgroup();
 202
 203   load_interfaces();
 204
 205   do
 206   {
 207     if ((cli = smb_connect(workgroup, server, printer, username, password)) == NULL)
 208     {
 209       if (getenv("CLASS") == NULL)
 210       {
 211         perror("ERROR: Unable to connect to SAMBA host, will retry in 60 seconds...");
 212         sleep (60);
 213       }
 214       else
 215       {
 216         perror("ERROR: Unable to connect to SAMBA host, trying next printer...");
 217         return (1);
 218       }
 219     }
 220   }
 221   while (cli == NULL);
 222
 223  /*
 224   * Now that we are connected to the server, ignore SIGTERM so that we
 225   * can finish out any page data the driver sends (e.g. to eject the
 226   * current page...  Only ignore SIGTERM if we are printing data from
 227   * stdin (otherwise you can't cancel raw jobs...)
 228   */
 229
 230   if (argc < 7)
 231     CatchSignal(SIGTERM, SIG_IGN);
 232
 233  /*
 234   * Queue the job...
 235   */
 236
 237   for (i = 0; i < copies; i ++)
 238     if ((status = smb_print(cli, argv[3] /* title */, fp)) != 0)
 239       break;
 240
 241   cli_shutdown(cli);
 242
 243  /*
 244   * Return the queue status...
 245   */
 246
 247   return (status);
 248 }
 249
 250
 251 /*
 252  * 'list_devices()' - List the available printers seen on the network...
 253  */
 254
 255 static void
 256 list_devices(void)
 257 {
 258  /*
 259   * Eventually, search the local workgroup for available hosts and printers.
 260   */
 261
 262   puts("network smb \"Unknown\" \"Windows Printer via SAMBA\"");
 263 }
 264
 265
 266 /*
 267  * 'smb_connect()' - Return a connection to a server.
 268  */
 269
 270 static struct cli_state *               /* O - SMB connection */
 271 smb_connect(char *workgroup,            /* I - Workgroup */
 272             char *server,               /* I - Server */
 273             char *share,                /* I - Printer */
 274             char *username,             /* I - Username */
 275             char *password)             /* I - Password */
 276 {
 277   struct cli_state      *c;             /* New connection */
 278   struct nmb_name       called,         /* NMB name of server */
 279                         calling;        /* NMB name of client */
 280   struct in_addr        ip;             /* IP address of server */
 281   pstring               myname;         /* Client name */
 282
 283
 284  /*
 285   * Get the names and addresses of the client and server...
 286   */
 287
 288   get_myname(myname);
 289
 290   ip = ipzero;
 291
 292   make_nmb_name(&calling, myname, 0x0);
 293   make_nmb_name(&called, server, 0x20);
 294
 295  /*
 296   * Open a new connection to the SMB server...
 297   */
 298
 299   if ((c = cli_initialise(NULL)) == NULL)
 300   {
 301     fputs("ERROR: cli_initialize() failed...\n", stderr);
 302     return (NULL);
 303   }
 304
 305   if (!cli_set_port(c, SMB_PORT))
 306   {
 307     fputs("ERROR: cli_set_port() failed...\n", stderr);
 308     return (NULL);
 309   }
 310
 311   if (!cli_connect(c, server, &ip))
 312   {
 313     fputs("ERROR: cli_connect() failed...\n", stderr);
 314     return (NULL);
 315   }
 316
 317   if (!cli_session_request(c, &calling, &called))
 318   {
 319     fputs("ERROR: cli_session_request() failed...\n", stderr);
 320     return (NULL);
 321   }
 322
 323   if (!cli_negprot(c))
 324   {
 325     fputs("ERROR: SMB protocol negotiation failed\n", stderr);
 326     cli_shutdown(c);
 327     return (NULL);
 328   }
 329
 330  /*
 331   * Do password stuff...
 332   */
 333
 334   if (!cli_session_setup(c, username,
 335                          password, strlen(password),
 336                          password, strlen(password),
 337                          workgroup))
 338   {
 339     fprintf(stderr, "ERROR: SMB session setup failed: %s\n", cli_errstr(c));
 340     return (NULL);
 341   }
 342
 343   if (!cli_send_tconX(c, share, "?????",
 344                       password, strlen(password)+1))
 345   {
 346     fprintf(stderr, "ERROR: SMB tree connect failed: %s\n", cli_errstr(c));
 347     cli_shutdown(c);
 348     return (NULL);
 349   }
 350
 351  /*
 352   * Return the new connection...
 353   */
 354
 355   return (c);
 356 }
 357
 358
 359 /*
 360  * 'smb_print()' - Queue a job for printing using the SMB protocol.
 361  */
 362
 363 static int                              /* O - 0 = success, non-0 = failure */
 364 smb_print(struct cli_state *cli,        /* I - SMB connection */
 365           char             *title,      /* I - Title/job name */
 366           FILE             *fp)         /* I - File to print */
 367 {
 368   int   fnum;           /* File number */
 369   int   nbytes,         /* Number of bytes read */
 370         tbytes;         /* Total bytes read */
 371   char  buffer[8192],   /* Buffer for copy */
 372         *ptr;           /* Pointer into tile */
 373
 374
 375  /*
 376   * Sanitize the title...
 377   */
 378
 379   for (ptr = title; *ptr; ptr ++)
 380     if (!isalnum((int)*ptr) && !isspace((int)*ptr))
 381       *ptr = '_';
 382
 383  /*
 384   * Open the printer device...
 385   */
 386
 387   if ((fnum = cli_open(cli, title, O_RDWR | O_CREAT | O_TRUNC, DENY_NONE)) == -1)
 388   {
 389     fprintf(stderr, "ERROR: %s opening remote file %s\n",
 390             cli_errstr(cli), title);
 391     return (1);
 392   }
 393
 394  /*
 395   * Copy the file to the printer...
 396   */
 397
 398   if (fp != stdin)
 399     rewind(fp);
 400
 401   tbytes = 0;
 402
 403   while ((nbytes = fread(buffer, 1, sizeof(buffer), fp)) > 0)
 404   {
 405     if (cli_write(cli, fnum, 0, buffer, tbytes, nbytes) != nbytes)
 406     {
 407       fprintf(stderr, "ERROR: Error writing file: %s\n", cli_errstr(cli));
 408       break;
 409     }
 410
 411     tbytes += nbytes;
 412   }
 413
 414   if (!cli_close(cli, fnum))
 415   {
 416     fprintf(stderr, "ERROR: %s closing remote file %s\n",
 417             cli_errstr(cli), title);
 418     return (1);
 419   }
 420   else
 421     return (0);
 422 }