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