pike.git / lib / modules / Protocols.pmod / LPD.pmod

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pike.git/lib/modules/Protocols.pmod/LPD.pmod:1:   //   // LPD.pmod: an implementation of the BSD lpd protocol (RFC 1179).   // This is a module for pike.   // 3 July 1998 <hww3@riverweb.com> Bill Welliver + // 2 August 2012 <bill@welliver.org> Bill Welliver>   // - // $Id: LPD.pmod,v 1.6 2000/09/28 03:38:50 hubbe Exp $ - // +       #pike __REAL_VERSION__    -  + //! A client for communicating with printers and print spoolers that + //! support the BSD lpd protocol (RFC 1179).   class client {    string host;    int port; -  object conn; +  private Stdio.File conn;    int jobnum;    string jobtype;    string jobname;    -  +  static int connect(string host, int port) +  { +  int a=random(10); +  // try to open one of the "official" local socket ports. +  // not having one doesn't seem to be a problem with most LPD +  // servers, but we should at least try. will probably fail +  // if two try to open the same local port at once. ymmv. +  int res=conn->open_socket(721 + a); +  +  return conn->connect(host, port); +  } +  +  static void send(string s, mixed ... args) + { + #ifdef LPD_DEBUG +  werror("LPD: sending %O\n", s); + #endif +  conn->write(s, @args); + } +  + //! @decl int set_job_type(string type) + //! Set the type of job to be sent to the printer to @i{type@}. + //! Valid types are: text, postscript and raw.    int set_job_type(string type)    {    type=lower_case(type);       switch (type) {    case "f":    case "text":    jobtype="f";    break;   
pike.git/lib/modules/Protocols.pmod/LPD.pmod:34:       default:    case "l":    case "raw":    jobtype="l";    break;    }    return 1;    }    + //! @decl int set_job_name(string name) + //! Sets the name of the print job to @i{name@}.    int set_job_name(string name)    {    jobname=name;    return 1;    }    -  string|int start_queue(string queue) + //! @decl int start_queue(string queue) + //! Start the queue @i{queue@} if not already printing. + //! @returns + //! Returns 0 if unable to connect, 1 otherwise. +  int start_queue(string queue)    {    if(!queue) return 0;    -  if(!conn->connect(host, port)) +  if(!connect(host, port))    return 0;    -  conn->write(sprintf("%c%s\n", 01, queue)); +  send("%c%s\n", 01, queue);    string resp= conn->read();    conn->close(); -  return 1; +  int res; +  sscanf(resp, "%c", res); +  return res;    }    -  string|int send_job(string queue, string job) + static string make_control(int jn)   { -  int r; +  String.Buffer control = String.Buffer(); +  +  control->add("H", gethostname(), "\n"); + #if constant(getuid) && constant(getpwuid) +  control->add("P", getpwuid(getuid())[0]||"nobody", "\n"); + #else +  control->add("P-1\n"); + #endif +  control->sprintf("%sdfA%03d%s\n", (jobtype||"l"), jn, gethostname()); +  if(jobname) +  { +  control->add("J", jobname, "\n", +  "N", jobname, "\n"); +  } +  else +  { +  control->add("JPike LPD Client Job ", (string)jn, "\n", +  "NPike LPD Client Job ", (string)jn, "\n"); +  } +  +  return (string)control; + } +  + //! @decl string|int send_job(string queue, string job) + //! Send print job consisting of data @i{job@} to printer @i{queue@}. + //! @returns + //! Returns 1 if success, 0 otherwise. +  int send_job(string queue, string job) +  { +  int jn = jobnum++;    string resp;       if(!queue) return 0;    -  if(!conn->connect(host, port)) +  if(!connect(host, port))    return 0; -  werror("connected to " + host + "\n"); +     -  conn->write(sprintf("%c%s\n", 02, queue)); -  // werror("sent send data command\n"); -  string control=""; -  control+="H"+gethostname()+"\n"; - #if constant(getuid) && constant(getpwuid) -  control+="P"+(getpwuid(getuid())[0]||"nobody")+"\n"; - #else -  /* Should there be a P-1 here? /Hubbe */ - #endif -  control+=(jobtype||"l")+"dfA"+ sprintf("%3d%s", jobnum, gethostname())+"\n"; -  if(jobname) -  control+="J" + jobname + "\n"; -  jobnum++; -  conn->write(sprintf("%c%s cfA%3d%s\n", 02, (string)sizeof(control), -  jobnum,gethostname())); -  // werror("getting ready to send control file\n"); +  send("\2%s\n",queue);    -  conn->write(sprintf("%s%c", control, 0)); -  // werror("sent control file\n"); +  resp=conn->read(1);    -  conn->write(sprintf("%c%s dfA%3d%s\n", 03, (string)sizeof(job), jobnum, -  gethostname())); -  conn->write(sprintf("%s%c", job, 0)); -  // werror("sent data file\n"); +  if(resp[0] !='\0') +  { +  werror("receive job failed: %O.\n", resp); +  return 0; +  }    -  conn->close(); -  start_queue(queue); +  string control = make_control(jn);    -  +  werror("job file:\n\n" + control + "\n\n"); +  +  send("%c%d cfA%03d%s\n", 2, sizeof(control), +  jn, gethostname()); +  +  resp=conn->read(1); +  if(resp[0] !='\0') +  { +  werror("request receive control failed.\n"); +  return 0; +  } +  +  send("%s%c", control, 0); +  +  resp=conn->read(1); +  if(resp[0] !='\0') +  { +  werror("send receive control failed.\n"); +  return 0; +  } +  +  send("%c%d dfA%03d%s\n", 3, sizeof(job), jn, +  gethostname()); +  +  resp=conn->read(1); +  if(resp[0] !='\0') +  { +  werror("request receive job failed.\n"); +  return 0; +  } +  +  send("%s%c", job, 0); +  +  resp=conn->read(1); +  if(resp[0] != '\0') +  { +  werror("send receive job failed.\n"); +  return 0; +  } +  +  conn->close();    return 1;    }    -  string|int delete_job(string queue, int|void job) + //! @decl int delete_job(string queue, int|void job) + //! Delete job @i{job@} from printer @i{queue@}. + //! @returns + //! Returns 1 on success, 0 otherwise. +  int delete_job(string queue, int|void job)    {    if(!queue) return 0;    -  if(!conn->connect(host, port)) +  if(!connect(host, port))    return 0;      #if constant(getpwuid) && constant(getuid)    string agent=(getpwuid(getuid())[0]||"nobody");   #else    string agent="nobody";   #endif       if(job) -  conn->write(sprintf("%c%s %s %d\n", 05, queue, agent, job)); +  send("%c%s %s %d\n", 5, queue, agent, job);    else -  conn->write(sprintf("%c%s %s\n", 05, queue, agent)); +  send("%c%s %s\n", 5, queue, agent);    string resp= conn->read();    conn->close(); -  return 1; +  int res; +  sscanf(resp, "%c", res); +  return res;    }       -  + //! @decl string|int status(string queue) + //! Check the status of queue @i{queue@}. + //! @returns + //! Returns 0 on failure, otherwise returns the status response from the printer.    string|int status(string queue)    {    if(!queue) return 0;    -  if(!conn->connect(host, port)) +  if(!connect(host, port))    return 0;    -  conn->write(sprintf("%c%s\n", 04, queue)); +  send("%c%s\n", 4, queue);    string resp= conn->read();    conn->close();    return resp;    }    -  + //! Create a new LPD client connection. + //! @param hostname + //! Contains the hostname or ipaddress of the print host. + //! if not provided, defaults to @i{localhost@}. + //! @param portnum + //! Contains the port the print host is listening on. + //! if not provided, defaults to port @i{515@}, the RFC 1179 standard.    void create(string|void hostname, int|void portnum)    {    host=hostname || "localhost";    port=portnum || 515;    conn=Stdio.File(); -  jobnum=0; +  jobnum=1;    }   } -  +