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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 | if(getCommand(response) && response->cmd == cmd){ | |
87 | //We got what we expected | |
88 | return true; | |
89 | } | |
90 | msleep(10); // XXX ugh | |
91 | if (dm_seconds == 200) { // Two seconds elapsed | |
92 | PrintAndLog("Waiting for a response from the proxmark..."); | |
93 | PrintAndLog("Don't forget to cancel its operation first by pressing on the button"); | |
94 | } | |
95 | } | |
96 | return false; | |
97 | } | |
98 | ||
99 | bool WaitForResponse(uint32_t cmd, UsbCommand* response) { | |
100 | return WaitForResponseTimeout(cmd,response,-1); | |
101 | } | |
102 | ||
103 | //----------------------------------------------------------------------------- | |
104 | // Entry point into our code: called whenever the user types a command and | |
105 | // then presses Enter, which the full command line that they typed. | |
106 | //----------------------------------------------------------------------------- | |
107 | void CommandReceived(char *Cmd) { | |
108 | CmdsParse(CommandTable, Cmd); | |
109 | } | |
110 | ||
111 | //----------------------------------------------------------------------------- | |
112 | // Entry point into our code: called whenever we received a packet over USB | |
113 | // that we weren't necessarily expecting, for example a debug print. | |
114 | //----------------------------------------------------------------------------- | |
115 | void UsbCommandReceived(UsbCommand *UC) | |
116 | { | |
117 | /* | |
118 | // Debug | |
119 | printf("UsbCommand length[len=%zd]\n",sizeof(UsbCommand)); | |
120 | printf(" cmd[len=%zd]: %"llx"\n",sizeof(UC->cmd),UC->cmd); | |
121 | printf(" arg0[len=%zd]: %"llx"\n",sizeof(UC->arg[0]),UC->arg[0]); | |
122 | printf(" arg1[len=%zd]: %"llx"\n",sizeof(UC->arg[1]),UC->arg[1]); | |
123 | printf(" arg2[len=%zd]: %"llx"\n",sizeof(UC->arg[2]),UC->arg[2]); | |
124 | printf(" data[len=%zd]: %02x%02x%02x...\n",sizeof(UC->d.asBytes),UC->d.asBytes[0],UC->d.asBytes[1],UC->d.asBytes[2]); | |
125 | */ | |
126 | ||
127 | // printf("%s(%x) current cmd = %x\n", __FUNCTION__, c->cmd, current_command); | |
128 | // If we recognize a response, return to avoid further processing | |
129 | switch(UC->cmd) { | |
130 | // First check if we are handling a debug message | |
131 | case CMD_DEBUG_PRINT_STRING: { | |
132 | char s[USB_CMD_DATA_SIZE+1]; | |
133 | size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE); | |
134 | memcpy(s,UC->d.asBytes,len); | |
135 | s[len] = 0x00; | |
136 | PrintAndLog("#db# %s ", s); | |
137 | return; | |
138 | } break; | |
139 | ||
140 | case CMD_DEBUG_PRINT_INTEGERS: { | |
141 | PrintAndLog("#db# %08x, %08x, %08x \r\n", UC->arg[0], UC->arg[1], UC->arg[2]); | |
142 | return; | |
143 | } break; | |
144 | ||
145 | case CMD_MEASURED_ANTENNA_TUNING: { | |
146 | int peakv, peakf; | |
147 | int vLf125, vLf134, vHf; | |
148 | vLf125 = UC->arg[0] & 0xffff; | |
149 | vLf134 = UC->arg[0] >> 16; | |
150 | vHf = UC->arg[1] & 0xffff;; | |
151 | peakf = UC->arg[2] & 0xffff; | |
152 | peakv = UC->arg[2] >> 16; | |
153 | PrintAndLog(""); | |
154 | PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0); | |
155 | PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0); | |
156 | PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1)); | |
157 | PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0); | |
158 | if (peakv<2000) | |
159 | PrintAndLog("# Your LF antenna is unusable."); | |
160 | else if (peakv<10000) | |
161 | PrintAndLog("# Your LF antenna is marginal."); | |
162 | if (vHf<2000) | |
163 | PrintAndLog("# Your HF antenna is unusable."); | |
164 | else if (vHf<5000) | |
165 | PrintAndLog("# Your HF antenna is marginal."); | |
166 | } break; | |
167 | ||
168 | case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K: { | |
169 | // printf("received samples: "); | |
170 | // print_hex(UC->d.asBytes,512); | |
171 | sample_buf_len += UC->arg[1]; | |
172 | // printf("samples: %zd offset: %d\n",sample_buf_len,UC->arg[0]); | |
173 | memcpy(sample_buf+(UC->arg[0]),UC->d.asBytes,UC->arg[1]); | |
174 | } break; | |
175 | ||
176 | ||
177 | // case CMD_ACK: { | |
178 | // PrintAndLog("Receive ACK\n"); | |
179 | // } break; | |
180 | ||
181 | default: { | |
182 | // Maybe it's a response | |
183 | /* | |
184 | switch(current_command) { | |
185 | case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: { | |
186 | if (UC->cmd != CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K) { | |
187 | PrintAndLog("unrecognized command %08x\n", UC->cmd); | |
188 | break; | |
189 | } | |
190 | // int i; | |
191 | PrintAndLog("received samples %d\n",UC->arg[0]); | |
192 | memcpy(sample_buf+UC->arg[0],UC->d.asBytes,48); | |
193 | sample_buf_len += 48; | |
194 | // for(i=0; i<48; i++) sample_buf[i] = UC->d.asBytes[i]; | |
195 | //received_command = UC->cmd; | |
196 | } break; | |
197 | ||
198 | default: { | |
199 | } break; | |
200 | }*/ | |
201 | } | |
202 | break; | |
203 | } | |
204 | ||
205 | storeCommand(UC); | |
206 | ||
207 | } | |
208 | /** | |
209 | * @brief storeCommand stores a USB command in a circular buffer | |
210 | * @param UC | |
211 | */ | |
212 | void storeCommand(UsbCommand *command) | |
213 | { | |
214 | if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail) | |
215 | { | |
216 | //If these two are equal, we're about to overwrite in the | |
217 | // circular buffer. | |
218 | PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!"); | |
219 | } | |
220 | //Store the command at the 'head' location | |
221 | UsbCommand* destination = &cmdBuffer[cmd_head]; | |
222 | memcpy(destination, command, sizeof(UsbCommand)); | |
223 | ||
224 | cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap | |
225 | ||
226 | } | |
227 | /** | |
228 | * @brief getCommand gets a command from an internal circular buffer. | |
229 | * @param response location to write command | |
230 | * @return 1 if response was returned, 0 if nothing has been received | |
231 | */ | |
232 | int getCommand(UsbCommand* response) | |
233 | { | |
234 | //If head == tail, there's nothing to read, or if we just got initialized | |
235 | if(cmd_head == cmd_tail){ | |
236 | return 0; | |
237 | } | |
238 | //Pick out the next unread command | |
239 | UsbCommand* last_unread = &cmdBuffer[cmd_tail]; | |
240 | memcpy(response, last_unread, sizeof(UsbCommand)); | |
241 | //Increment tail - this is a circular buffer, so modulo buffer size | |
242 | cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE; | |
243 | ||
244 | return 1; | |
245 | ||
246 | } |