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. + //! + //! An implementation of the BSD lpd protocol (@rfc{1179@}). + //!   // 3 July 1998 <hww3@riverweb.com> Bill Welliver -  + // 2 August 2012 <bill@welliver.org> Bill Welliver>   // - // $Id$ - // +       #pike __REAL_VERSION__      //! A client for communicating with printers and print spoolers that - //! support the BSD lpd protocol (RFC 1179). + //! support the BSD lpd protocol (@rfc{1179@}).   class client {    string host;    int port; -  private object conn; +  private Stdio.File conn;    int jobnum;    string jobtype;    string jobname;    -  private int connect(string host, int port) +  protected 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);    }    -  +  protected 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":
pike.git/lib/modules/Protocols.pmod/LPD.pmod:70:   //! 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(!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;    }    -  + protected string make_control(int jn) + { +  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(!connect(host, port))    return 0; -  // werror("connected to " + host + "\n"); +     -  string control=""; -  control+="H"+gethostname()+"\n"; - #if constant(getuid) && constant(getpwuid) -  control+="P"+(getpwuid(getuid())[0]||"nobody")+"\n"; - #else -  control+="P-1\n"; - #endif -  control+=(jobtype||"l")+"dfA"+ sprintf("%03d%s", jobnum, gethostname())+"\n"; -  if(jobname) -  { -  control+="J" + jobname + "\n"; -  control+="N" + jobname + "\n"; -  } -  else -  { -  control+="JPike LPD Client Job " + jobnum + "\n"; -  control+="NPike LPD Client Job " + jobnum + "\n"; -  } -  jobnum++; - werror("job file:\n\n" + control + "\n\n"); +  send("\2%s\n",queue);    -  conn->write(sprintf("%c%s\n", 02, queue)); +     resp=conn->read(1); -  if((int)resp !=0) +  +  if(resp[0] !='\0')    { -  werror("receive job failed.\n"); +  werror("receive job failed: %O.\n", resp);    return 0;    }    -  conn->write(sprintf("%c%s cfA%03d%s\n", 02, (string)sizeof(control), -  jobnum,gethostname())); +  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((int)resp !=0) +  if(resp[0] !='\0')    {    werror("request receive control failed.\n");    return 0;    }    -  conn->write(sprintf("%s%c", control, 0)); +  send("%s%c", control, 0);       resp=conn->read(1); -  if((int)resp !=0) +  if(resp[0] !='\0')    {    werror("send receive control failed.\n");    return 0;    }    -  conn->write(sprintf("%c%s dfA%03d%s\n", 03, (string)sizeof(job), jobnum, -  gethostname())); +  send("%c%d dfA%03d%s\n", 3, sizeof(job), jn, +  gethostname()); +     resp=conn->read(1); -  if((int)resp !=0) +  if(resp[0] !='\0')    {    werror("request receive job failed.\n");    return 0;    }    -  +  send("%s%c", job, 0);    -  conn->write(sprintf("%s%c", job, 0)); -  +     resp=conn->read(1); -  if((int)resp !=0) +  if(resp[0] != '\0')    {    werror("send receive job failed.\n");    return 0;    }    -  -  -  // read the response. -  - // resp=conn->read(); -  if((int)(resp)!=0) -  { +     conn->close(); -  return 0; -  } -  conn->close(); - // start_queue(queue); +     return 1;    }      //! @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;
pike.git/lib/modules/Protocols.pmod/LPD.pmod:190:    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(!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. + //! 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=1;    }   }