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(const char *, const char *, int, const char *, const char *, const 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   int           port;           /* Port number */
  54   char          uri[1024],      /* URI */
  55                 *sep,           /* Pointer to separator */
  56                 *password;      /* Password */
  57   const char    *username,      /* Username */
  58                 *server,        /* Server name */
  59                 *printer;       /* Printer name */
  60   const char    *workgroup;     /* Workgroup */
  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[:port]/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 (getenv("DEVICE_URI") != NULL)
 122     strncpy(uri, getenv("DEVICE_URI"), sizeof(uri) - 1);
 123   else if (strncmp(argv[0], "smb://", 6) == 0)
 124     strncpy(uri, argv[0], sizeof(uri) - 1);
 125   else
 126   {
 127     fputs("ERROR: No device URI found in DEVICE_URI environment variable or argv[0] !\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 = CONST_DISCARD(char *, "");
 152   }
 153   else
 154   {
 155     username = "";
 156     password = CONST_DISCARD(char *, "");
 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   if ((sep = strrchr_m(server, ':')) != NULL)
 185   {
 186     *sep++ = '\0';
 187
 188     port=atoi(sep);
 189   }
 190   else
 191         port=0;
 192
 193
 194  /*
 195   * Setup the SAMBA server state...
 196   */
 197
 198   setup_logging("smbspool", True);
 199
 200   in_client = True;   /* Make sure that we tell lp_load we are */
 201
 202   if (!lp_load(dyn_CONFIGFILE, True, False, False))
 203   {
 204     fprintf(stderr, "ERROR: Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
 205     return (1);
 206   }
 207
 208   if (workgroup == NULL)
 209     workgroup = lp_workgroup();
 210
 211   load_interfaces();
 212
 213   do
 214   {
 215     if ((cli = smb_connect(workgroup, server, port, printer, username, password)) == NULL)
 216     {
 217       if (getenv("CLASS") == NULL)
 218       {
 219         fprintf(stderr, "ERROR: Unable to connect to SAMBA host, will retry in 60 seconds...");
 220         sleep (60);
 221       }
 222       else
 223       {
 224         fprintf(stderr, "ERROR: Unable to connect to SAMBA host, trying next printer...");
 225         return (1);
 226       }
 227     }
 228   }
 229   while (cli == NULL);
 230
 231  /*
 232   * Now that we are connected to the server, ignore SIGTERM so that we
 233   * can finish out any page data the driver sends (e.g. to eject the
 234   * current page...  Only ignore SIGTERM if we are printing data from
 235   * stdin (otherwise you can't cancel raw jobs...)
 236   */
 237
 238   if (argc < 7)
 239     CatchSignal(SIGTERM, SIG_IGN);
 240
 241  /*
 242   * Queue the job...
 243   */
 244
 245   for (i = 0; i < copies; i ++)
 246     if ((status = smb_print(cli, argv[3] /* title */, fp)) != 0)
 247       break;
 248
 249   cli_shutdown(cli);
 250
 251  /*
 252   * Return the queue status...
 253   */
 254
 255   return (status);
 256 }
 257
 258
 259 /*
 260  * 'list_devices()' - List the available printers seen on the network...
 261  */
 262
 263 static void
 264 list_devices(void)
 265 {
 266  /*
 267   * Eventually, search the local workgroup for available hosts and printers.
 268   */
 269
 270   puts("network smb \"Unknown\" \"Windows Printer via SAMBA\"");
 271 }
 272
 273
 274 /*
 275  * 'smb_connect()' - Return a connection to a server.
 276  */
 277
 278 static struct cli_state *               /* O - SMB connection */
 279 smb_connect(const char *workgroup,              /* I - Workgroup */
 280             const char *server,         /* I - Server */
 281             const int port,             /* I - Port */
 282             const char *share,          /* I - Printer */
 283             const char *username,               /* I - Username */
 284             const char *password)               /* I - Password */
 285 {
 286   struct cli_state      *c;             /* New connection */
 287   pstring               myname;         /* Client name */
 288   NTSTATUS nt_status;
 289
 290  /*
 291   * Get the names and addresses of the client and server...
 292   */
 293
 294   get_myname(myname);
 295
 296   nt_status = cli_full_connection(&c, myname, server, NULL, port, share, "?????",
 297                                   username, workgroup, password, 0, Undefined, NULL);
 298
 299   if (!NT_STATUS_IS_OK(nt_status)) {
 300           fprintf(stderr, "ERROR:  Connection failed with error %s\n", nt_errstr(nt_status));
 301           return NULL;
 302   }
 303
 304   /*
 305    * Return the new connection...
 306    */
 307
 308   return (c);
 309 }
 310
 311
 312 /*
 313  * 'smb_print()' - Queue a job for printing using the SMB protocol.
 314  */
 315
 316 static int                              /* O - 0 = success, non-0 = failure */
 317 smb_print(struct cli_state *cli,        /* I - SMB connection */
 318           char             *title,      /* I - Title/job name */
 319           FILE             *fp)         /* I - File to print */
 320 {
 321   int   fnum;           /* File number */
 322   int   nbytes,         /* Number of bytes read */
 323         tbytes;         /* Total bytes read */
 324   char  buffer[8192],   /* Buffer for copy */
 325         *ptr;           /* Pointer into tile */
 326
 327
 328  /*
 329   * Sanitize the title...
 330   */
 331
 332   for (ptr = title; *ptr; ptr ++)
 333     if (!isalnum((int)*ptr) && !isspace((int)*ptr))
 334       *ptr = '_';
 335
 336  /*
 337   * Open the printer device...
 338   */
 339
 340   if ((fnum = cli_open(cli, title, O_RDWR | O_CREAT | O_TRUNC, DENY_NONE)) == -1)
 341   {
 342     fprintf(stderr, "ERROR: %s opening remote spool %s\n",
 343             cli_errstr(cli), title);
 344     return (1);
 345   }
 346
 347  /*
 348   * Copy the file to the printer...
 349   */
 350
 351   if (fp != stdin)
 352     rewind(fp);
 353
 354   tbytes = 0;
 355
 356   while ((nbytes = fread(buffer, 1, sizeof(buffer), fp)) > 0)
 357   {
 358     if (cli_write(cli, fnum, 0, buffer, tbytes, nbytes) != nbytes)
 359     {
 360       fprintf(stderr, "ERROR: Error writing spool: %s\n", cli_errstr(cli));
 361       break;
 362     }
 363
 364     tbytes += nbytes;
 365   }
 366
 367   if (!cli_close(cli, fnum))
 368   {
 369     fprintf(stderr, "ERROR: %s closing remote spool %s\n",
 370             cli_errstr(cli), title);
 371     return (1);
 372   }
 373   else
 374     return (0);
 375 }