X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/534983d7352171526a6d43b112e0baaefdb1e3cd..refs/pull/580/head:/client/cmdmain.c?ds=sidebyside diff --git a/client/cmdmain.c b/client/cmdmain.c index 3388d75f..8d9313f9 100644 --- a/client/cmdmain.c +++ b/client/cmdmain.c @@ -8,12 +8,15 @@ // Main command parser entry point //----------------------------------------------------------------------------- +#include "cmdmain.h" + +#include #include #include #include #include -#include "sleep.h" #include "cmdparser.h" +#include "proxmark3.h" #include "data.h" #include "usb_cmd.h" #include "ui.h" @@ -21,27 +24,43 @@ #include "cmddata.h" #include "cmdhw.h" #include "cmdlf.h" -#include "cmdmain.h" +#include "util.h" +#include "util_posix.h" +#include "cmdscript.h" + unsigned int current_command = CMD_UNKNOWN; -unsigned int received_command = CMD_UNKNOWN; -UsbCommand current_response; static int CmdHelp(const char *Cmd); static int CmdQuit(const char *Cmd); +//For storing command that are received from the device +#define CMD_BUFFER_SIZE 50 +static UsbCommand cmdBuffer[CMD_BUFFER_SIZE]; +//Points to the next empty position to write to +static int cmd_head;//Starts as 0 +//Points to the position of the last unread command +static int cmd_tail;//Starts as 0 +// to lock cmdBuffer operations from different threads +static pthread_mutex_t cmdBufferMutex = PTHREAD_MUTEX_INITIALIZER; + static command_t CommandTable[] = { - {"help", CmdHelp, 1, "This help. Use ' help' for details of the following commands:\n"}, + {"help", CmdHelp, 1, "This help. Use ' help' for details of a particular command."}, {"data", CmdData, 1, "{ Plot window / data buffer manipulation... }"}, - {"exit", CmdQuit, 1, "Exit program"}, - {"hf", CmdHF, 1, "{ HF commands... }"}, + {"hf", CmdHF, 1, "{ High Frequency commands... }"}, {"hw", CmdHW, 1, "{ Hardware commands... }"}, - {"lf", CmdLF, 1, "{ LF commands... }"}, - {"quit", CmdQuit, 1, "Quit program"}, + {"lf", CmdLF, 1, "{ Low Frequency commands... }"}, + {"script",CmdScript,1, "{ Scripting commands }"}, + {"quit", CmdQuit, 1, "Exit program"}, + {"exit", CmdQuit, 1, "Exit program"}, {NULL, NULL, 0, NULL} }; +command_t* getTopLevelCommandTable() +{ + return CommandTable; +} int CmdHelp(const char *Cmd) { CmdsHelp(CommandTable); @@ -50,112 +69,156 @@ int CmdHelp(const char *Cmd) int CmdQuit(const char *Cmd) { - exit(0); - return 0; + return 99; +} + +/** + * @brief This method should be called when sending a new command to the pm3. In case any old + * responses from previous commands are stored in the buffer, a call to this method should clear them. + * A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which + * operation. Right now we'll just have to live with this. + */ +void clearCommandBuffer() +{ + //This is a very simple operation + pthread_mutex_lock(&cmdBufferMutex); + cmd_tail = cmd_head; + pthread_mutex_unlock(&cmdBufferMutex); } -UsbCommand * WaitForResponseTimeout(uint32_t response_type, uint32_t ms_timeout) { - UsbCommand * ret = ¤t_response; - int i=0; +/** + * @brief storeCommand stores a USB command in a circular buffer + * @param UC + */ +void storeCommand(UsbCommand *command) +{ + pthread_mutex_lock(&cmdBufferMutex); + if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail) + { + //If these two are equal, we're about to overwrite in the + // circular buffer. + PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!"); + } + //Store the command at the 'head' location + UsbCommand* destination = &cmdBuffer[cmd_head]; + memcpy(destination, command, sizeof(UsbCommand)); + + cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap + pthread_mutex_unlock(&cmdBufferMutex); +} - for(i=0; received_command != response_type && i < ms_timeout / 10; i++) { - msleep(10); // XXX ugh + +/** + * @brief getCommand gets a command from an internal circular buffer. + * @param response location to write command + * @return 1 if response was returned, 0 if nothing has been received + */ +int getCommand(UsbCommand* response) +{ + pthread_mutex_lock(&cmdBufferMutex); + //If head == tail, there's nothing to read, or if we just got initialized + if(cmd_head == cmd_tail){ + pthread_mutex_unlock(&cmdBufferMutex); + return 0; + } + //Pick out the next unread command + UsbCommand* last_unread = &cmdBuffer[cmd_tail]; + memcpy(response, last_unread, sizeof(UsbCommand)); + //Increment tail - this is a circular buffer, so modulo buffer size + cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE; + pthread_mutex_unlock(&cmdBufferMutex); + return 1; +} + + +/** + * Waits for a certain response type. This method waits for a maximum of + * ms_timeout milliseconds for a specified response command. + *@brief WaitForResponseTimeout + * @param cmd command to wait for + * @param response struct to copy received command into. + * @param ms_timeout + * @return true if command was returned, otherwise false + */ +bool WaitForResponseTimeoutW(uint32_t cmd, UsbCommand* response, size_t ms_timeout, bool show_warning) { + + UsbCommand resp; + + if (response == NULL) { + response = &resp; } - if(received_command != response_type) - ret = NULL; + uint64_t start_time = msclock(); + + // Wait until the command is received + while (true) { + while(getCommand(response)) { + if(response->cmd == cmd){ + return true; + } + } + if (msclock() - start_time > ms_timeout) { + break; + } + if (msclock() - start_time > 2000 && show_warning) { + PrintAndLog("Waiting for a response from the proxmark..."); + PrintAndLog("You can cancel this operation by pressing the pm3 button"); + show_warning = false; + } + } + return false; +} - received_command = CMD_UNKNOWN; - return ret; +bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) { + return WaitForResponseTimeoutW(cmd, response, ms_timeout, true); } -UsbCommand * WaitForResponse(uint32_t response_type) -{ - return WaitForResponseTimeout(response_type, -1); +bool WaitForResponse(uint32_t cmd, UsbCommand* response) { + return WaitForResponseTimeoutW(cmd, response, -1, true); } + //----------------------------------------------------------------------------- // Entry point into our code: called whenever the user types a command and // then presses Enter, which the full command line that they typed. //----------------------------------------------------------------------------- -void CommandReceived(char *Cmd) -{ - CmdsParse(CommandTable, Cmd); +int CommandReceived(char *Cmd) { + return CmdsParse(CommandTable, Cmd); } + //----------------------------------------------------------------------------- // Entry point into our code: called whenever we received a packet over USB // that we weren't necessarily expecting, for example a debug print. //----------------------------------------------------------------------------- void UsbCommandReceived(UsbCommand *UC) { - // printf("%s(%x) current cmd = %x\n", __FUNCTION__, c->cmd, current_command); - /* If we recognize a response, return to avoid further processing */ - switch(UC->cmd) { - case CMD_DEBUG_PRINT_STRING: { - char s[100]; - if(UC->arg[0] > 70 || UC->arg[0] < 0) { - UC->arg[0] = 0; - } - memcpy(s, UC->d.asBytes, UC->arg[0]); - s[UC->arg[0]] = '\0'; - PrintAndLog("#db# %s", s); - return; - } + switch(UC->cmd) { + // First check if we are handling a debug message + case CMD_DEBUG_PRINT_STRING: { + char s[USB_CMD_DATA_SIZE+1]; + memset(s, 0x00, sizeof(s)); + size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE); + memcpy(s,UC->d.asBytes,len); + PrintAndLog("#db# %s", s); + return; + } break; + + case CMD_DEBUG_PRINT_INTEGERS: { + PrintAndLog("#db# %08x, %08x, %08x \r\n", UC->arg[0], UC->arg[1], UC->arg[2]); + return; + } break; + + case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K: { + memcpy(sample_buf+(UC->arg[0]),UC->d.asBytes,UC->arg[1]); + return; + } break; + + default: + storeCommand(UC); + break; + } - case CMD_DEBUG_PRINT_INTEGERS: - PrintAndLog("#db# %08x, %08x, %08x\r\n", UC->arg[0], UC->arg[1], UC->arg[2]); - return; - - case CMD_MEASURED_ANTENNA_TUNING: { - int peakv, peakf; - int vLf125, vLf134, vHf; - vLf125 = UC->arg[0] & 0xffff; - vLf134 = UC->arg[0] >> 16; - vHf = UC->arg[1] & 0xffff;; - peakf = UC->arg[2] & 0xffff; - peakv = UC->arg[2] >> 16; - PrintAndLog(""); - PrintAndLog(""); - PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0); - PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0); - PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1)); - PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0); - if (peakv<2000) - PrintAndLog("# Your LF antenna is unusable."); - else if (peakv<10000) - PrintAndLog("# Your LF antenna is marginal."); - if (vHf<2000) - PrintAndLog("# Your HF antenna is unusable."); - else if (vHf<5000) - PrintAndLog("# Your HF antenna is marginal."); - return; - } - default: - break; - } - /* Maybe it's a response: */ - switch(current_command) { - case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: - if (UC->cmd != CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K) goto unexpected_response; - int i; - for(i=0; i<48; i++) sample_buf[i] = UC->d.asBytes[i]; - received_command = UC->cmd; - return; - case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K: - case CMD_DOWNLOADED_SIM_SAMPLES_125K: - if (UC->cmd != CMD_ACK) goto unexpected_response; - // got ACK - received_command = UC->cmd; - return; - default: - unexpected_response: - - if(UC->cmd != CMD_ACK) - PrintAndLog("unrecognized command %08x\n", UC->cmd); - else - memcpy(¤t_response, UC, sizeof(UsbCommand)); - received_command = UC->cmd; - } } +