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