1 /*****************************************************************************/ 2 // USB port transport add-on, 3 // changes by Andreas Benzler, Philippe Houdoin 4 // 5 // Original from Parallel 6 // port transport add-on. 7 // 8 // Author 9 // Michael Pfeiffer 10 // 11 // This application and all source files used in its construction, except 12 // where noted, are licensed under the MIT License, and have been written 13 // and are: 14 // 15 // Copyright (c) 2001-2004 OpenBeOS Project 16 // 17 // Permission is hereby granted, free of charge, to any person obtaining a 18 // copy of this software and associated documentation files (the "Software"), 19 // to deal in the Software without restriction, including without limitation 20 // the rights to use, copy, modify, merge, publish, distribute, sublicense, 21 // and/or sell copies of the Software, and to permit persons to whom the 22 // Software is furnished to do so, subject to the following conditions: 23 // 24 // The above copyright notice and this permission notice shall be included 25 // in all copies or substantial portions of the Software. 26 // 27 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 28 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 29 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 30 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 31 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 32 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 33 // DEALINGS IN THE SOFTWARE. 34 /*****************************************************************************/ 35 36 37 #include <stdio.h> 38 #include <unistd.h> 39 #include <string.h> 40 41 #include <StorageKit.h> 42 #include <SupportKit.h> 43 44 #include <USB_printer.h> 45 46 #include "PrintTransportAddOn.h" 47 48 49 class USBTransport : public BDataIO 50 { 51 public: 52 USBTransport(BDirectory *printer, BMessage *msg); 53 ~USBTransport(); 54 55 status_t InitCheck() { return fFile > -1 ? B_OK : B_ERROR; }; 56 57 ssize_t Read(void *buffer, size_t size); 58 ssize_t Write(const void *buffer, size_t size); 59 60 private: 61 int fFile; 62 }; 63 64 65 // Implementation of transport add-on interface 66 67 BDataIO * 68 instantiate_transport(BDirectory *printer, BMessage *msg) 69 { 70 USBTransport * transport = new USBTransport(printer, msg); 71 if (transport->InitCheck() == B_OK) 72 return transport; 73 74 delete transport; 75 return NULL; 76 } 77 78 status_t list_transport_ports(BMessage* msg) 79 { 80 BDirectory dir("/dev/printer/usb"); 81 status_t rc; 82 83 if ((rc=dir.InitCheck()) != B_OK) 84 return rc; 85 86 if ((rc=dir.Rewind()) != B_OK) 87 return rc; 88 89 entry_ref ref; 90 while(dir.GetNextRef(&ref) == B_OK) 91 msg->AddString("port_id", ref.name); 92 93 return B_OK; 94 } 95 96 97 // Implementation of USBTransport 98 99 USBTransport::USBTransport(BDirectory *printer, BMessage *msg) 100 : fFile(-1) 101 { 102 char device_id[USB_PRINTER_DEVICE_ID_LENGTH + 1]; 103 char name[USB_PRINTER_DEVICE_ID_LENGTH + 1]; 104 char *desc; 105 char *value; 106 int ret; 107 bool bidirectional = true; 108 char *next_token; 109 110 // We support only one USB printer, so does BeOS R5. 111 fFile = open("/dev/printer/usb/0", O_RDWR | O_EXCL | O_BINARY, 0); 112 if (fFile < 0) { 113 // Try unidirectional access mode 114 bidirectional = false; 115 fFile = open("/dev/printer/usb/0", O_WRONLY | O_EXCL | O_BINARY, 0); 116 } 117 118 if (fFile < 0) 119 return; 120 121 // Get printer's DEVICE ID string 122 ret = ioctl(fFile, USB_PRINTER_GET_DEVICE_ID, device_id, sizeof(device_id)); 123 if (ret < 0) { 124 close(fFile); 125 fFile = -1; 126 return; 127 } 128 129 if (! msg) 130 // Caller don't care about transport init message output content... 131 return; 132 133 // Fill up the message 134 msg->what = 'okok'; 135 136 msg->AddBool("bidirectional", bidirectional); 137 msg->AddString("device_id", device_id); 138 139 // parse and split the device_id string into separate parameters 140 desc = strtok_r(device_id, ":", &next_token); 141 while (desc) { 142 snprintf(name, sizeof(name), "DEVID:%s", desc); 143 value = strtok_r(NULL, ";", &next_token); 144 if (!value) 145 break; 146 msg->AddString(name, value); 147 148 // next device descriptor 149 desc = strtok_r(NULL, ":", &next_token); 150 } 151 } 152 153 154 USBTransport::~USBTransport() 155 { 156 if (fFile > -1) 157 close(fFile); 158 } 159 160 161 ssize_t 162 USBTransport::Read(void *buffer, size_t size) 163 { 164 return read(fFile, buffer, size); 165 } 166 167 168 ssize_t 169 USBTransport::Write(const void *buffer, size_t size) 170 { 171 return write(fFile, buffer, size); 172 } 173 174