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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 "../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
29 int delta125[2];
30 int delta134[2];
31 int deltahf[2];
32 int deltaReset = 0;
33
34 unsigned int current_command = CMD_UNKNOWN;
35 //unsigned int received_command = CMD_UNKNOWN;
36 //UsbCommand current_response;
37 //UsbCommand current_response_user;
38
39 static int CmdHelp(const char *Cmd);
40 static int CmdQuit(const char *Cmd);
41
42 //For storing command that are received from the device
43 #define CMD_BUFFER_SIZE 50
44 static UsbCommand cmdBuffer[CMD_BUFFER_SIZE];
45 //Points to the next empty position to write to
46 static int cmd_head;//Starts as 0
47 //Points to the position of the last unread command
48 static int cmd_tail;//Starts as 0
49
50 static command_t CommandTable[] =
51 {
52 {"help", CmdHelp, 1, "This help. Use '<command> help' for details of a particular command."},
53 {"data", CmdData, 1, "{ Plot window / data buffer manipulation... }"},
54 {"hf", CmdHF, 1, "{ High Frequency commands... }"},
55 {"hw", CmdHW, 1, "{ Hardware commands... }"},
56 {"lf", CmdLF, 1, "{ Low Frequency commands... }"},
57 {"script", CmdScript, 1,"{ Scripting commands }"},
58 {"quit", CmdQuit, 1, "Exit program"},
59 {"exit", CmdQuit, 1, "Exit program"},
60 {NULL, NULL, 0, NULL}
61 };
62
63 command_t* getTopLevelCommandTable()
64 {
65 return CommandTable;
66 }
67 int CmdHelp(const char *Cmd)
68 {
69 CmdsHelp(CommandTable);
70 return 0;
71 }
72
73 int CmdQuit(const char *Cmd)
74 {
75 exit(0);
76 return 0;
77 }
78 /**
79 * @brief This method should be called when sending a new command to the pm3. In case any old
80 * responses from previous commands are stored in the buffer, a call to this method should clear them.
81 * A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which
82 * operation. Right now we'll just have to live with this.
83 */
84 void clearCommandBuffer()
85 {
86 //This is a very simple operation
87 cmd_tail = cmd_head;
88 }
89
90 /**
91 * @brief storeCommand stores a USB command in a circular buffer
92 * @param UC
93 */
94 void storeCommand(UsbCommand *command)
95 {
96 if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
97 {
98 //If these two are equal, we're about to overwrite in the
99 // circular buffer.
100 PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!");
101 }
102 //Store the command at the 'head' location
103 UsbCommand* destination = &cmdBuffer[cmd_head];
104 memcpy(destination, command, sizeof(UsbCommand));
105
106 cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
107
108 }
109 /**
110 * @brief getCommand gets a command from an internal circular buffer.
111 * @param response location to write command
112 * @return 1 if response was returned, 0 if nothing has been received
113 */
114 int getCommand(UsbCommand* response)
115 {
116 //If head == tail, there's nothing to read, or if we just got initialized
117 if(cmd_head == cmd_tail){
118 return 0;
119 }
120 //Pick out the next unread command
121 UsbCommand* last_unread = &cmdBuffer[cmd_tail];
122 memcpy(response, last_unread, sizeof(UsbCommand));
123 //Increment tail - this is a circular buffer, so modulo buffer size
124 cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
125
126 return 1;
127
128 }
129
130 /**
131 * Waits for a certain response type. This method waits for a maximum of
132 * ms_timeout milliseconds for a specified response command.
133 *@brief WaitForResponseTimeout
134 * @param cmd command to wait for
135 * @param response struct to copy received command into.
136 * @param ms_timeout
137 * @return true if command was returned, otherwise false
138 */
139 bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
140
141 UsbCommand resp;
142
143 if (response == NULL) {
144
145 response = &resp;
146 }
147
148 // Wait until the command is received
149 for(size_t dm_seconds=0; dm_seconds < ms_timeout/10; dm_seconds++) {
150
151 while(getCommand(response))
152 {
153 if(response->cmd == cmd){
154 //We got what we expected
155 return true;
156 }
157
158 }
159 msleep(10); // XXX ugh
160 if (dm_seconds == 200) { // Two seconds elapsed
161 PrintAndLog("Waiting for a response from the proxmark...");
162 PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
163 }
164 }
165 return false;
166 }
167
168 bool WaitForResponse(uint32_t cmd, UsbCommand* response) {
169 return WaitForResponseTimeout(cmd,response,-1);
170 }
171
172 //-----------------------------------------------------------------------------
173 // Entry point into our code: called whenever the user types a command and
174 // then presses Enter, which the full command line that they typed.
175 //-----------------------------------------------------------------------------
176 void CommandReceived(char *Cmd) {
177 CmdsParse(CommandTable, Cmd);
178 }
179
180 //-----------------------------------------------------------------------------
181 // Entry point into our code: called whenever we received a packet over USB
182 // that we weren't necessarily expecting, for example a debug print.
183 //-----------------------------------------------------------------------------
184 void UsbCommandReceived(UsbCommand *UC)
185 {
186 /*
187 // Debug
188 printf("UsbCommand length[len=%zd]\n",sizeof(UsbCommand));
189 printf(" cmd[len=%zd]: %"llx"\n",sizeof(UC->cmd),UC->cmd);
190 printf(" arg0[len=%zd]: %"llx"\n",sizeof(UC->arg[0]),UC->arg[0]);
191 printf(" arg1[len=%zd]: %"llx"\n",sizeof(UC->arg[1]),UC->arg[1]);
192 printf(" arg2[len=%zd]: %"llx"\n",sizeof(UC->arg[2]),UC->arg[2]);
193 printf(" data[len=%zd]: %02x%02x%02x...\n",sizeof(UC->d.asBytes),UC->d.asBytes[0],UC->d.asBytes[1],UC->d.asBytes[2]);
194 */
195
196 // printf("%s(%x) current cmd = %x\n", __FUNCTION__, c->cmd, current_command);
197 // If we recognize a response, return to avoid further processing
198 switch(UC->cmd) {
199 // First check if we are handling a debug message
200 case CMD_DEBUG_PRINT_STRING: {
201 char s[USB_CMD_DATA_SIZE+1];
202 size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE);
203 memcpy(s,UC->d.asBytes,len);
204 s[len] = 0x00;
205 PrintAndLog("#db# %s ", s);
206 return;
207 } break;
208
209 case CMD_DEBUG_PRINT_INTEGERS: {
210 PrintAndLog("#db# %08x, %08x, %08x \r\n", UC->arg[0], UC->arg[1], UC->arg[2]);
211 return;
212 } break;
213
214 case CMD_MEASURED_ANTENNA_TUNING: {
215 int peakv, peakf;
216 int vLf125, vLf134, vHf;
217 vLf125 = UC->arg[0] & 0xffff;
218 vLf134 = UC->arg[0] >> 16;
219 vHf = UC->arg[1] & 0xffff;;
220 peakf = UC->arg[2] & 0xffff;
221 peakv = UC->arg[2] >> 16;
222
223 //Reset delta trigger every 3:d time
224
225 if ( deltaReset == 4){
226 delta125[0] = vLf125;
227 delta134[0] = vLf134;
228 deltahf[0] = vHf;
229 } else if ( deltaReset == 2){
230 delta125[1] = vLf125;
231 delta134[1] = vLf134;
232 deltahf[1] = vHf;
233 }
234
235 if ( deltaReset == 0){
236
237 }
238
239 PrintAndLog("");
240 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
241 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
242 PrintAndLog("# LF optimal: %5.2f V @ %9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
243 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
244 if (peakv<2000)
245 PrintAndLog("# Your LF antenna is unusable.");
246 else if (peakv<10000)
247 PrintAndLog("# Your LF antenna is marginal.");
248 if (vHf<2000)
249 PrintAndLog("# Your HF antenna is unusable.");
250 else if (vHf<5000)
251 PrintAndLog("# Your HF antenna is marginal.");
252 }
253
254 deltaReset = (deltaReset == 0) ? 4 : deltaReset>>1;
255 break;
256
257 case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K: {
258 // printf("received samples: ");
259 // print_hex(UC->d.asBytes,512);
260 sample_buf_len += UC->arg[1];
261 // printf("samples: %zd offset: %d\n",sample_buf_len,UC->arg[0]);
262 memcpy(sample_buf+(UC->arg[0]),UC->d.asBytes,UC->arg[1]);
263 } break;
264
265
266 // case CMD_ACK: {
267 // PrintAndLog("Receive ACK\n");
268 // } break;
269
270 default: {
271 // Maybe it's a response
272 /*
273 switch(current_command) {
274 case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: {
275 if (UC->cmd != CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K) {
276 PrintAndLog("unrecognized command %08x\n", UC->cmd);
277 break;
278 }
279 // int i;
280 PrintAndLog("received samples %d\n",UC->arg[0]);
281 memcpy(sample_buf+UC->arg[0],UC->d.asBytes,48);
282 sample_buf_len += 48;
283 // for(i=0; i<48; i++) sample_buf[i] = UC->d.asBytes[i];
284 //received_command = UC->cmd;
285 } break;
286
287 default: {
288 } break;
289 }*/
290 }
291 break;
292 }
293
294 storeCommand(UC);
295
296 }
297
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