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FIX: 'iclass write'
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1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // Main command parser entry point
9 //-----------------------------------------------------------------------------
10
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <unistd.h>
14 #include <string.h>
15 #include "sleep.h"
16 #include "cmdparser.h"
17 #include "proxmark3.h"
18 #include "data.h"
19 #include "usb_cmd.h"
20 #include "ui.h"
21 #include "cmdhf.h"
22 #include "cmddata.h"
23 #include "cmdhw.h"
24 #include "cmdlf.h"
25 #include "cmdmain.h"
26 #include "util.h"
27 #include "cmdscript.h"
28 #include "cmdcrc.h"
29 #include "cmdanalyse.h"
30
31 unsigned int current_command = CMD_UNKNOWN;
32
33 static int CmdHelp(const char *Cmd);
34 static int CmdQuit(const char *Cmd);
35 static int CmdRev(const char *Cmd);
36
37 //For storing command that are received from the device
38 #define CMD_BUFFER_SIZE 50
39 static UsbCommand cmdBuffer[CMD_BUFFER_SIZE];
40 //Points to the next empty position to write to
41 static int cmd_head;//Starts as 0
42 //Points to the position of the last unread command
43 static int cmd_tail;//Starts as 0
44
45 static command_t CommandTable[] =
46 {
47 {"help", CmdHelp, 1, "This help. Use '<command> help' for details of a particular command."},
48 {"analyse", CmdAnalyse, 1, "{ Analyse bytes... }"},
49 {"data", CmdData, 1, "{ Plot window / data buffer manipulation... }"},
50 {"hf", CmdHF, 1, "{ High Frequency commands... }"},
51 {"hw", CmdHW, 1, "{ Hardware commands... }"},
52 {"lf", CmdLF, 1, "{ Low Frequency commands... }"},
53 {"reveng", CmdRev, 1, "Crc calculations from the software reveng 1.40"},
54 {"script", CmdScript, 1, "{ Scripting commands }"},
55 {"quit", CmdQuit, 1, "Exit program"},
56 {"exit", CmdQuit, 1, "Exit program"},
57 {NULL, NULL, 0, NULL}
58 };
59
60 command_t* getTopLevelCommandTable()
61 {
62 return CommandTable;
63 }
64 int CmdHelp(const char *Cmd)
65 {
66 CmdsHelp(CommandTable);
67 return 0;
68 }
69
70 int CmdQuit(const char *Cmd)
71 {
72 return 99;
73 }
74
75 int CmdRev(const char *Cmd)
76 {
77 CmdCrc(Cmd);
78 return 0;
79 }
80 /**
81 * @brief This method should be called when sending a new command to the pm3. In case any old
82 * responses from previous commands are stored in the buffer, a call to this method should clear them.
83 * A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which
84 * operation. Right now we'll just have to live with this.
85 */
86 void clearCommandBuffer()
87 {
88 //This is a very simple operation
89 cmd_tail = cmd_head;
90 }
91
92 /**
93 * @brief storeCommand stores a USB command in a circular buffer
94 * @param UC
95 */
96 void storeCommand(UsbCommand *command)
97 {
98 if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
99 {
100 //If these two are equal, we're about to overwrite in the
101 // circular buffer.
102 PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!");
103 }
104 //Store the command at the 'head' location
105 UsbCommand* destination = &cmdBuffer[cmd_head];
106 memcpy(destination, command, sizeof(UsbCommand));
107
108 cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
109
110 }
111 /**
112 * @brief getCommand gets a command from an internal circular buffer.
113 * @param response location to write command
114 * @return 1 if response was returned, 0 if nothing has been received
115 */
116 int getCommand(UsbCommand* response)
117 {
118 //If head == tail, there's nothing to read, or if we just got initialized
119 if(cmd_head == cmd_tail) return 0;
120
121 //Pick out the next unread command
122 UsbCommand* last_unread = &cmdBuffer[cmd_tail];
123 memcpy(response, last_unread, sizeof(UsbCommand));
124
125 //Increment tail - this is a circular buffer, so modulo buffer size
126 cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
127
128 return 1;
129 }
130
131 /**
132 * Waits for a certain response type. This method waits for a maximum of
133 * ms_timeout milliseconds for a specified response command.
134 *@brief WaitForResponseTimeout
135 * @param cmd command to wait for
136 * @param response struct to copy received command into.
137 * @param ms_timeout
138 * @return true if command was returned, otherwise false
139 */
140 bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
141
142 UsbCommand resp;
143
144 if (response == NULL)
145 response = &resp;
146
147 // Wait until the command is received
148 for ( size_t dm_seconds = 0; dm_seconds < ms_timeout/10; dm_seconds++ ) {
149
150 while( getCommand(response) ) {
151 if(response->cmd == cmd)
152 return true;
153 }
154
155 msleep(10); // XXX ugh
156 if (dm_seconds == 250) { // 2.5 seconds elapsed
157 PrintAndLog("Waiting for a response from the proxmark...");
158 PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
159 }
160 }
161 return false;
162 }
163
164 bool WaitForResponse(uint32_t cmd, UsbCommand* response) {
165 return WaitForResponseTimeout(cmd, response, -1);
166 }
167
168 //-----------------------------------------------------------------------------
169 // Entry point into our code: called whenever the user types a command and
170 // then presses Enter, which the full command line that they typed.
171 //-----------------------------------------------------------------------------
172 int CommandReceived(char *Cmd) {
173 return CmdsParse(CommandTable, Cmd);
174 }
175
176 //-----------------------------------------------------------------------------
177 // Entry point into our code: called whenever we received a packet over USB
178 // that we weren't necessarily expecting, for example a debug print.
179 //-----------------------------------------------------------------------------
180 void UsbCommandReceived(UsbCommand *UC)
181 {
182 switch(UC->cmd) {
183 // First check if we are handling a debug message
184 case CMD_DEBUG_PRINT_STRING: {
185 char s[USB_CMD_DATA_SIZE+1];
186 memset(s, 0x00, sizeof(s));
187 size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE);
188 memcpy(s, UC->d.asBytes, len);
189
190 // test
191 if ( UC->arg[1] == CMD_MEASURE_ANTENNA_TUNING_HF) {
192 printf("\r#db# %s", s);
193 fflush(stdout);
194 }
195 else
196 PrintAndLog("#db# %s", s);
197
198 return;
199 } break;
200
201 case CMD_DEBUG_PRINT_INTEGERS: {
202 PrintAndLog("#db# %08x, %08x, %08x", UC->arg[0], UC->arg[1], UC->arg[2]);
203 break;
204 }
205 case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K:
206 case CMD_DOWNLOADED_EML_BIGBUF: {
207 memcpy( sample_buf + (UC->arg[0]), UC->d.asBytes, UC->arg[1]);
208 break;
209 }
210 default: {
211 storeCommand(UC);
212 break;
213 }
214 }
215
216 }
217
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