source3/libsmb/cliprint.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client print routines
   4    Copyright (C) Andrew Tridgell 1994-1998
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "libsmb/libsmb.h"
  22 #include "libsmb/clirap.h"
  23 #include "../libcli/smb/smbXcli_base.h"
  24 #include "lib/util/string_wrappers.h"
  25
  26 /*****************************************************************************
  27  Convert a character pointer in a cli_call_api() response to a form we can use.
  28  This function contains code to prevent core dumps if the server returns
  29  invalid data.
  30 *****************************************************************************/
  31 static const char *fix_char_ptr(unsigned int datap, unsigned int converter,
  32                           char *rdata, int rdrcnt)
  33 {
  34         unsigned int offset;
  35
  36         if (datap == 0) {
  37                 /* turn NULL pointers into zero length strings */
  38                 return "";
  39         }
  40
  41         offset = datap - converter;
  42
  43         if (offset >= rdrcnt) {
  44                 DEBUG(1,("bad char ptr: datap=%u, converter=%u rdrcnt=%d>\n",
  45                          datap, converter, rdrcnt));
  46                 return "<ERROR>";
  47         }
  48         return &rdata[offset];
  49 }
  50
  51 /****************************************************************************
  52 call fn() on each entry in a print queue
  53 ****************************************************************************/
  54
  55 NTSTATUS cli_print_queue(struct cli_state *cli,
  56                          void (*fn)(struct print_job_info *))
  57 {
  58         uint8_t *rparam = NULL;
  59         uint8_t *rdata = NULL;
  60         char *p = NULL;
  61         uint32_t rdrcnt, rprcnt;
  62         char param[1024];
  63         int converter;
  64         int result_code=0;
  65         int i = -1;
  66         NTSTATUS status;
  67
  68         memset(param,'\0',sizeof(param));
  69
  70         p = param;
  71         SSVAL(p,0,76);         /* API function number 76 (DosPrintJobEnum) */
  72         p += 2;
  73         strlcpy_base(p,"zWrLeh", param, sizeof(param));   /* parameter description? */
  74         p = skip_string(param,sizeof(param),p);
  75         strlcpy_base(p,"WWzWWDDzz", param, sizeof(param));  /* returned data format */
  76         p = skip_string(param,sizeof(param),p);
  77         strlcpy_base(p,cli->share, param, sizeof(param));    /* name of queue */
  78         p = skip_string(param,sizeof(param),p);
  79         SSVAL(p,0,2);   /* API function level 2, PRJINFO_2 data structure */
  80         SSVAL(p,2,1000); /* size of bytes of returned data buffer */
  81         p += 4;
  82         strlcpy_base(p,"", param,sizeof(param));   /* subformat */
  83         p = skip_string(param,sizeof(param),p);
  84
  85         DEBUG(4,("doing cli_print_queue for %s\n", cli->share));
  86
  87         status = cli_trans(
  88                 talloc_tos(),
  89                 cli,
  90                 SMBtrans,          /* trans_cmd */
  91                 "\\PIPE\\LANMAN",  /* name */
  92                 0,                 /* fid */
  93                 0,                 /* function */
  94                 0,                 /* flags */
  95                 NULL,              /* setup */
  96                 0,                 /* num_setup */
  97                 0,                 /* max_setup */
  98                 (uint8_t *)param,  /* param */
  99                 PTR_DIFF(p,param), /* num_param */
 100                 1024,              /* max_param */
 101                 NULL,              /* data */
 102                 0,                 /* num_data */
 103                 CLI_BUFFER_SIZE,   /* max_data */
 104                 NULL,              /* recv_flags2 */
 105                 NULL,              /* rsetup */
 106                 0,                 /* min_rsetup */
 107                 NULL,              /* num_rsetup */
 108                 &rparam,           /* rparam */
 109                 8,                 /* min_rparam */
 110                 &rprcnt,           /* num_rparam */
 111                 &rdata,            /* rdata */
 112                 0,                 /* min_rdata */
 113                 &rdrcnt);          /* num_rdata */
 114         if (!NT_STATUS_IS_OK(status)) {
 115                 return status;
 116         }
 117
 118         result_code = SVAL(rparam,0);
 119         converter = SVAL(rparam,2);       /* conversion factor */
 120
 121         if (result_code == 0) {
 122                 struct print_job_info job;
 123
 124                 p = (char *)rdata;
 125
 126                 for (i = 0; i < SVAL(rparam,4); ++i) {
 127                         job.id = SVAL(p,0);
 128                         job.priority = SVAL(p,2);
 129                         fstrcpy(job.user,
 130                                 fix_char_ptr(SVAL(p,4), converter,
 131                                              (char *)rdata, rdrcnt));
 132                         job.t = make_unix_date3(
 133                                 p + 12, smb1cli_conn_server_time_zone(cli->conn));
 134                         job.size = IVAL(p,16);
 135                         fstrcpy(job.name,fix_char_ptr(SVAL(p,24),
 136                                                       converter,
 137                                                       (char *)rdata, rdrcnt));
 138                         fn(&job);
 139                         p += 28;
 140                 }
 141         }
 142
 143         /* If any parameters or data were returned, free the storage. */
 144         TALLOC_FREE(rparam);
 145         TALLOC_FREE(rdata);
 146
 147         return NT_STATUS_OK;
 148 }
 149
 150 /****************************************************************************
 151   cancel a print job
 152   ****************************************************************************/
 153
 154 NTSTATUS cli_printjob_del(struct cli_state *cli, int job)
 155 {
 156         uint8_t *rparam = NULL;
 157         uint8_t *rdata = NULL;
 158         char *p = NULL;
 159         uint32_t rdrcnt, rprcnt;
 160         int result_code;
 161         char param[1024];
 162         NTSTATUS status = NT_STATUS_OK;
 163
 164         memset(param,'\0',sizeof(param));
 165
 166         p = param;
 167         SSVAL(p,0,81);          /* DosPrintJobDel() */
 168         p += 2;
 169         strlcpy_base(p,"W", param,sizeof(param));
 170         p = skip_string(param,sizeof(param),p);
 171         strlcpy_base(p,"", param,sizeof(param));
 172         p = skip_string(param,sizeof(param),p);
 173         SSVAL(p,0,job);
 174         p += 2;
 175
 176         status = cli_trans(talloc_tos(),
 177                            cli,
 178                            SMBtrans,           /* trans_cmd */
 179                            "\\PIPE\\LANMAN",   /* name */
 180                            0,                  /* fid */
 181                            0,                  /* function */
 182                            0,                  /* flags */
 183                            NULL,               /* setup */
 184                            0,                  /* num_setup */
 185                            0,                  /* max_setup */
 186                            (uint8_t *)param,   /* param */
 187                            PTR_DIFF(p, param), /* num_param */
 188                            1024,               /* max_param */
 189                            NULL,               /* data */
 190                            0,                  /* num_data */
 191                            CLI_BUFFER_SIZE,    /* max_data */
 192                            NULL,               /* recv_flags2 */
 193                            NULL,               /* rsetup */
 194                            0,                  /* min_rsetup */
 195                            NULL,               /* num_rsetup */
 196                            &rparam,            /* rparam */
 197                            8,                  /* min_rparam */
 198                            &rprcnt,            /* num_rparam */
 199                            &rdata,             /* rdata */
 200                            0,                  /* min_rdata */
 201                            &rdrcnt);           /* num_rdata */
 202         if (!NT_STATUS_IS_OK(status)) {
 203                 return status;
 204         }
 205
 206         result_code = SVAL(rparam, 0);
 207
 208         TALLOC_FREE(rparam);
 209         TALLOC_FREE(rdata);
 210
 211         if (result_code == ERRnosuchprintjob) {
 212                 status = NT_STATUS_INVALID_PARAMETER;
 213         }
 214
 215         return status;
 216 }