1/*****************************************************************************/ 2// Serial port transport add-on. 3// 4// Author 5// Michael Pfeiffer 6// 7// This application and all source files used in its construction, except 8// where noted, are licensed under the MIT License, and have been written 9// and are: 10// 11// Copyright (c) 2001-2003 OpenBeOS Project 12// 13// Permission is hereby granted, free of charge, to any person obtaining a 14// copy of this software and associated documentation files (the "Software"), 15// to deal in the Software without restriction, including without limitation 16// the rights to use, copy, modify, merge, publish, distribute, sublicense, 17// and/or sell copies of the Software, and to permit persons to whom the 18// Software is furnished to do so, subject to the following conditions: 19// 20// The above copyright notice and this permission notice shall be included 21// in all copies or substantial portions of the Software. 22// 23// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 24// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 25// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 26// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 27// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 28// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 29// DEALINGS IN THE SOFTWARE. 30/*****************************************************************************/ 31 32#include <unistd.h> 33#include <stdio.h> 34 35#include <StorageKit.h> 36#include <SupportKit.h> 37 38#include "PrintTransportAddOn.h" 39 40class SerialTransport : public BDataIO { 41public: 42 SerialTransport(BDirectory* printer, BMessage* msg); 43 ~SerialTransport(); 44 45 status_t InitCheck() { return fFile > -1 ? B_OK : B_ERROR; } 46 47 ssize_t Read(void* buffer, size_t size); 48 ssize_t Write(const void* buffer, size_t size); 49 50private: 51 int fFile; 52}; 53 54// Impelmentation of SerialTransport 55SerialTransport::SerialTransport(BDirectory* printer, BMessage* msg) 56 : fFile(-1) 57{ 58 char address[80]; 59 char device[B_PATH_NAME_LENGTH]; 60 bool bidirectional = true; 61 62 unsigned int size = printer->ReadAttr("transport_address", B_STRING_TYPE, 0, address, sizeof(address)); 63 if (size <= 0 || size >= sizeof(address)) return; 64 address[size] = 0; // make sure string is 0-terminated 65 66 strcat(strcpy(device, "/dev/ports/"), address); 67 fFile = open(device, O_RDWR | O_EXCL, 0); 68 if (fFile < 0) { 69 // Try unidirectional access mode 70 bidirectional = false; 71 fFile = open(device, O_WRONLY | O_EXCL, 0); 72 } 73 74 if (fFile < 0) 75 return; 76 77 if (! msg) 78 // Caller don't care about transport init message output content... 79 return; 80 81 msg->what = 'okok'; 82 msg->AddBool("bidirectional", bidirectional); 83 msg->AddString("_serial/DeviceName", device); 84 85} 86 87SerialTransport::~SerialTransport() 88{ 89 if (InitCheck() == B_OK) 90 close(fFile); 91} 92 93ssize_t SerialTransport::Read(void* buffer, size_t size) 94{ 95 return read(fFile, buffer, size); 96} 97 98ssize_t SerialTransport::Write(const void* buffer, size_t size) 99{ 100 return write(fFile, buffer, size); 101} 102 103BDataIO* instantiate_transport(BDirectory* printer, BMessage* msg) 104{ 105 SerialTransport* transport = new SerialTransport(printer, msg); 106 if (transport->InitCheck() == B_OK) 107 return transport; 108 109 delete transport; 110 return NULL; 111} 112 113status_t list_transport_ports(BMessage* msg) 114{ 115 BDirectory dir("/dev/ports"); 116 status_t rc; 117 118 if ((rc=dir.InitCheck()) != B_OK) 119 return rc; 120 121 if ((rc=dir.Rewind()) != B_OK) 122 return rc; 123 124 entry_ref ref; 125 while(dir.GetNextRef(&ref) == B_OK) 126 msg->AddString("port_id", ref.name); 127 128 return B_OK; 129} 130 131