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
  24 /*****************************************************************************
  25  Convert a character pointer in a cli_call_api() response to a form we can use.
  26  This function contains code to prevent core dumps if the server returns
  27  invalid data.
  28 *****************************************************************************/
  29 static const char *fix_char_ptr(unsigned int datap, unsigned int converter,
  30                           char *rdata, int rdrcnt)
  31 {
  32         unsigned int offset;
  33
  34         if (datap == 0) {
  35                 /* turn NULL pointers into zero length strings */
  36                 return "";
  37         }
  38
  39         offset = datap - converter;
  40
  41         if (offset >= rdrcnt) {
  42                 DEBUG(1,("bad char ptr: datap=%u, converter=%u rdrcnt=%d>",
  43                          datap, converter, rdrcnt));
  44                 return "<ERROR>";
  45         }
  46         return &rdata[offset];
  47 }
  48
  49 /****************************************************************************
  50 call fn() on each entry in a print queue
  51 ****************************************************************************/
  52
  53 int cli_print_queue(struct cli_state *cli,
  54                     void (*fn)(struct print_job_info *))
  55 {
  56         char *rparam = NULL;
  57         char *rdata = NULL;
  58         char *p;
  59         unsigned int rdrcnt, rprcnt;
  60         char param[1024];
  61         int result_code=0;
  62         int i = -1;
  63
  64         memset(param,'\0',sizeof(param));
  65
  66         p = param;
  67         SSVAL(p,0,76);         /* API function number 76 (DosPrintJobEnum) */
  68         p += 2;
  69         safe_strcpy_base(p,"zWrLeh", param, sizeof(param));   /* parameter description? */
  70         p = skip_string(param,sizeof(param),p);
  71         safe_strcpy_base(p,"WWzWWDDzz", param, sizeof(param));  /* returned data format */
  72         p = skip_string(param,sizeof(param),p);
  73         safe_strcpy_base(p,cli->share, param, sizeof(param));    /* name of queue */
  74         p = skip_string(param,sizeof(param),p);
  75         SSVAL(p,0,2);   /* API function level 2, PRJINFO_2 data structure */
  76         SSVAL(p,2,1000); /* size of bytes of returned data buffer */
  77         p += 4;
  78         safe_strcpy_base(p,"", param,sizeof(param));   /* subformat */
  79         p = skip_string(param,sizeof(param),p);
  80
  81         DEBUG(4,("doing cli_print_queue for %s\n", cli->share));
  82
  83         if (cli_api(cli,
  84                     param, PTR_DIFF(p,param), 1024,  /* Param, length, maxlen */
  85                     NULL, 0, CLI_BUFFER_SIZE,            /* data, length, maxlen */
  86                     &rparam, &rprcnt,                /* return params, length */
  87                     &rdata, &rdrcnt)) {               /* return data, length */
  88                 int converter;
  89                 result_code = SVAL(rparam,0);
  90                 converter = SVAL(rparam,2);       /* conversion factor */
  91
  92                 if (result_code == 0) {
  93                         struct print_job_info job;
  94
  95                         p = rdata;
  96
  97                         for (i = 0; i < SVAL(rparam,4); ++i) {
  98                                 job.id = SVAL(p,0);
  99                                 job.priority = SVAL(p,2);
 100                                 fstrcpy(job.user,
 101                                         fix_char_ptr(SVAL(p,4), converter,
 102                                                      rdata, rdrcnt));
 103                                 job.t = make_unix_date3(
 104                                         p + 12, cli->serverzone);
 105                                 job.size = IVAL(p,16);
 106                                 fstrcpy(job.name,fix_char_ptr(SVAL(p,24),
 107                                                               converter,
 108                                                               rdata, rdrcnt));
 109                                 fn(&job);
 110                                 p += 28;
 111                         }
 112                 }
 113         }
 114
 115         /* If any parameters or data were returned, free the storage. */
 116         SAFE_FREE(rparam);
 117         SAFE_FREE(rdata);
 118
 119         return i;
 120 }
 121
 122 /****************************************************************************
 123   cancel a print job
 124   ****************************************************************************/
 125
 126 int cli_printjob_del(struct cli_state *cli, int job)
 127 {
 128         char *rparam = NULL;
 129         char *rdata = NULL;
 130         char *p;
 131         unsigned int rdrcnt,rprcnt;
 132         int ret = -1;
 133         char param[1024];
 134
 135         memset(param,'\0',sizeof(param));
 136
 137         p = param;
 138         SSVAL(p,0,81);          /* DosPrintJobDel() */
 139         p += 2;
 140         safe_strcpy_base(p,"W", param,sizeof(param));
 141         p = skip_string(param,sizeof(param),p);
 142         safe_strcpy_base(p,"", param,sizeof(param));
 143         p = skip_string(param,sizeof(param),p);
 144         SSVAL(p,0,job);
 145         p += 2;
 146
 147         if (cli_api(cli,
 148                     param, PTR_DIFF(p,param), 1024,  /* Param, length, maxlen */
 149                     NULL, 0, CLI_BUFFER_SIZE,            /* data, length, maxlen */
 150                     &rparam, &rprcnt,                /* return params, length */
 151                     &rdata, &rdrcnt)) {               /* return data, length */
 152                 ret = SVAL(rparam,0);
 153         }
 154
 155         SAFE_FREE(rparam);
 156         SAFE_FREE(rdata);
 157
 158         return ret;
 159 }