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/clirap.h"
  22
  23 /*****************************************************************************
  24  Convert a character pointer in a cli_call_api() response to a form we can use.
  25  This function contains code to prevent core dumps if the server returns
  26  invalid data.
  27 *****************************************************************************/
  28 static const char *fix_char_ptr(unsigned int datap, unsigned int converter,
  29                           char *rdata, int rdrcnt)
  30 {
  31         unsigned int offset;
  32
  33         if (datap == 0) {
  34                 /* turn NULL pointers into zero length strings */
  35                 return "";
  36         }
  37
  38         offset = datap - converter;
  39
  40         if (offset >= rdrcnt) {
  41                 DEBUG(1,("bad char ptr: datap=%u, converter=%u rdrcnt=%d>",
  42                          datap, converter, rdrcnt));
  43                 return "<ERROR>";
  44         }
  45         return &rdata[offset];
  46 }
  47
  48 /****************************************************************************
  49 call fn() on each entry in a print queue
  50 ****************************************************************************/
  51
  52 int cli_print_queue(struct cli_state *cli,
  53                     void (*fn)(struct print_job_info *))
  54 {
  55         char *rparam = NULL;
  56         char *rdata = NULL;
  57         char *p;
  58         unsigned int rdrcnt, rprcnt;
  59         char param[1024];
  60         int result_code=0;
  61         int i = -1;
  62
  63         memset(param,'\0',sizeof(param));
  64
  65         p = param;
  66         SSVAL(p,0,76);         /* API function number 76 (DosPrintJobEnum) */
  67         p += 2;
  68         safe_strcpy_base(p,"zWrLeh", param, sizeof(param));   /* parameter description? */
  69         p = skip_string(param,sizeof(param),p);
  70         safe_strcpy_base(p,"WWzWWDDzz", param, sizeof(param));  /* returned data format */
  71         p = skip_string(param,sizeof(param),p);
  72         safe_strcpy_base(p,cli->share, param, sizeof(param));    /* name of queue */
  73         p = skip_string(param,sizeof(param),p);
  74         SSVAL(p,0,2);   /* API function level 2, PRJINFO_2 data structure */
  75         SSVAL(p,2,1000); /* size of bytes of returned data buffer */
  76         p += 4;
  77         safe_strcpy_base(p,"", param,sizeof(param));   /* subformat */
  78         p = skip_string(param,sizeof(param),p);
  79
  80         DEBUG(4,("doing cli_print_queue for %s\n", cli->share));
  81
  82         if (cli_api(cli,
  83                     param, PTR_DIFF(p,param), 1024,  /* Param, length, maxlen */
  84                     NULL, 0, CLI_BUFFER_SIZE,            /* data, length, maxlen */
  85                     &rparam, &rprcnt,                /* return params, length */
  86                     &rdata, &rdrcnt)) {               /* return data, length */
  87                 int converter;
  88                 result_code = SVAL(rparam,0);
  89                 converter = SVAL(rparam,2);       /* conversion factor */
  90
  91                 if (result_code == 0) {
  92                         struct print_job_info job;
  93
  94                         p = rdata;
  95
  96                         for (i = 0; i < SVAL(rparam,4); ++i) {
  97                                 job.id = SVAL(p,0);
  98                                 job.priority = SVAL(p,2);
  99                                 fstrcpy(job.user,
 100                                         fix_char_ptr(SVAL(p,4), converter,
 101                                                      rdata, rdrcnt));
 102                                 job.t = make_unix_date3(
 103                                         p + 12, cli->serverzone);
 104                                 job.size = IVAL(p,16);
 105                                 fstrcpy(job.name,fix_char_ptr(SVAL(p,24),
 106                                                               converter,
 107                                                               rdata, rdrcnt));
 108                                 fn(&job);
 109                                 p += 28;
 110                         }
 111                 }
 112         }
 113
 114         /* If any parameters or data were returned, free the storage. */
 115         SAFE_FREE(rparam);
 116         SAFE_FREE(rdata);
 117
 118         return i;
 119 }
 120
 121 /****************************************************************************
 122   cancel a print job
 123   ****************************************************************************/
 124
 125 int cli_printjob_del(struct cli_state *cli, int job)
 126 {
 127         char *rparam = NULL;
 128         char *rdata = NULL;
 129         char *p;
 130         unsigned int rdrcnt,rprcnt;
 131         int ret = -1;
 132         char param[1024];
 133
 134         memset(param,'\0',sizeof(param));
 135
 136         p = param;
 137         SSVAL(p,0,81);          /* DosPrintJobDel() */
 138         p += 2;
 139         safe_strcpy_base(p,"W", param,sizeof(param));
 140         p = skip_string(param,sizeof(param),p);
 141         safe_strcpy_base(p,"", param,sizeof(param));
 142         p = skip_string(param,sizeof(param),p);
 143         SSVAL(p,0,job);
 144         p += 2;
 145
 146         if (cli_api(cli,
 147                     param, PTR_DIFF(p,param), 1024,  /* Param, length, maxlen */
 148                     NULL, 0, CLI_BUFFER_SIZE,            /* data, length, maxlen */
 149                     &rparam, &rprcnt,                /* return params, length */
 150                     &rdata, &rdrcnt)) {               /* return data, length */
 151                 ret = SVAL(rparam,0);
 152         }
 153
 154         SAFE_FREE(rparam);
 155         SAFE_FREE(rdata);
 156
 157         return ret;
 158 }