#include "comms.h"
+#include <stdio.h>
+#include <stddef.h>
+#include <string.h>
#include <pthread.h>
+#include <inttypes.h>
+
#if defined(__linux__) && !defined(NO_UNLINK)
-#include <unistd.h> // for unlink()
+#include <unistd.h> // for unlink()
#endif
#include "uart.h"
#include "ui.h"
#include "common.h"
+#include "util_darwin.h"
#include "util_posix.h"
typedef struct {
bool run; // If TRUE, continue running the uart_communication thread
- bool block_after_ACK; // if true, block after receiving an ACK package
} communication_arg_t;
static communication_arg_t conn;
// Used by UsbReceiveCommand as a ring buffer for messages that are yet to be
// processed by a command handler (WaitForResponse{,Timeout})
+#define CMD_BUFFER_SIZE 50
static UsbCommand rxBuffer[CMD_BUFFER_SIZE];
// Points to the next empty position to write to
if (offline) {
PrintAndLog("Sending bytes to proxmark failed - offline");
return;
- }
+ }
pthread_mutex_lock(&txBufferMutex);
/**
- This causes hangups at times, when the pm3 unit is unresponsive or disconnected. The main console thread is alive,
+ This causes hangups at times, when the pm3 unit is unresponsive or disconnected. The main console thread is alive,
but comm thread just spins here. Not good.../holiman
**/
while (txBuffer_pending) {
} break;
default:
- storeCommand(UC);
+ storeCommand(UC);
break;
}
}
+static bool receive_from_serial(serial_port sp, uint8_t *rx_buf, size_t len, size_t *received_len) {
+ size_t bytes_read = 0;
+ *received_len = 0;
+ // we eventually need to call uart_receive several times if it times out in the middle of a transfer
+ while (uart_receive(sp, rx_buf + *received_len, len - *received_len, &bytes_read) && bytes_read && *received_len < len) {
+ #ifdef COMMS_DEBUG
+ if (bytes_read != len - *received_len) {
+ printf("uart_receive() returned true but not enough bytes could be received. received: %d, wanted to receive: %d, already received before: %d\n",
+ bytes_read, len - *received_len, *received_len);
+ }
+ #endif
+ *received_len += bytes_read;
+ bytes_read = 0;
+ }
+ return (*received_len == len);
+}
+
+
static void
#ifdef __has_attribute
#if __has_attribute(force_align_arg_pointer)
-__attribute__((force_align_arg_pointer))
+__attribute__((force_align_arg_pointer))
#endif
#endif
*uart_communication(void *targ) {
communication_arg_t *conn = (communication_arg_t*)targ;
- size_t rxlen;
- UsbCommand rx;
- UsbCommand *prx = ℞
+ uint8_t rx[sizeof(UsbCommand)];
+ size_t rxlen = 0;
+ uint8_t *prx = rx;
+ UsbCommand *command = (UsbCommand*)rx;
+ UsbResponse *response = (UsbResponse*)rx;
+
+#if defined(__MACH__) && defined(__APPLE__)
+ disableAppNap("Proxmark3 polling UART");
+#endif
while (conn->run) {
- rxlen = 0;
bool ACK_received = false;
- if (uart_receive(sp, (uint8_t *)prx, sizeof(UsbCommand) - (prx-&rx), &rxlen) && rxlen) {
+ prx = rx;
+ size_t bytes_to_read = offsetof(UsbResponse, d); // the fixed part of a new style UsbResponse. Otherwise this will be cmd and arg[0] (64 bit each)
+ if (receive_from_serial(sp, prx, bytes_to_read, &rxlen)) {
prx += rxlen;
- if (prx-&rx < sizeof(UsbCommand)) {
- continue;
- }
- UsbCommandReceived(&rx);
- if (rx.cmd == CMD_ACK) {
- ACK_received = true;
+ if (response->cmd & CMD_VARIABLE_SIZE_FLAG) { // new style response with variable size
+ // PrintAndLog("received new style response %04" PRIx16 ", datalen = %d, arg[0] = %08" PRIx32 ", arg[1] = %08" PRIx32 ", arg[2] = %08" PRIx32 "\n",
+ // response->cmd, response->datalen, response->arg[0], response->arg[1], response->arg[2]);
+ bytes_to_read = response->datalen;
+ if (receive_from_serial(sp, prx, bytes_to_read, &rxlen)) {
+ UsbCommand resp;
+ resp.cmd = response->cmd & ~CMD_VARIABLE_SIZE_FLAG; // remove the flag
+ resp.arg[0] = response->arg[0];
+ resp.arg[1] = response->arg[1];
+ resp.arg[2] = response->arg[2];
+ memcpy(&resp.d.asBytes, &response->d.asBytes, response->datalen);
+ UsbCommandReceived(&resp);
+ if (resp.cmd == CMD_ACK) {
+ ACK_received = true;
+ }
+ }
+ } else { // old style response uses same data structure as commands. Fixed size.
+ // PrintAndLog("received old style response %016" PRIx64 ", arg[0] = %016" PRIx64 "\n", command->cmd, command->arg[0]);
+ bytes_to_read = sizeof(UsbCommand) - bytes_to_read;
+ if (receive_from_serial(sp, prx, bytes_to_read, &rxlen)) {
+ UsbCommandReceived(command);
+ if (command->cmd == CMD_ACK) {
+ ACK_received = true;
+ }
+ }
}
}
- prx = ℞
-
pthread_mutex_lock(&txBufferMutex);
-
- if (conn->block_after_ACK) {
- // if we just received an ACK, wait here until a new command is to be transmitted
- if (ACK_received) {
- while (!txBuffer_pending) {
- pthread_cond_wait(&txBufferSig, &txBufferMutex);
- }
+ // if we received an ACK the PM has done its job and waits for another command.
+ // We therefore can wait here as well until a new command is to be transmitted.
+ // The advantage is that the next command will be transmitted immediately without the need to wait for a receive timeout
+ if (ACK_received) {
+ while (!txBuffer_pending) {
+ pthread_cond_wait(&txBufferSig, &txBufferMutex);
}
}
-
- if(txBuffer_pending) {
+ if (txBuffer_pending) {
if (!uart_send(sp, (uint8_t*) &txBuffer, sizeof(UsbCommand))) {
PrintAndLog("Sending bytes to proxmark failed");
}
txBuffer_pending = false;
- pthread_cond_signal(&txBufferSig); // tell main thread that txBuffer is empty
}
-
+ pthread_cond_signal(&txBufferSig); // tell main thread that txBuffer is empty
pthread_mutex_unlock(&txBufferMutex);
}
+#if defined(__MACH__) && defined(__APPLE__)
+ enableAppNap();
+#endif
+
pthread_exit(NULL);
return NULL;
}
uint64_t start_time = msclock();
UsbCommand resp;
- if (response == NULL) {
+ if (response == NULL) {
response = &resp;
}
return false;
}
-
-bool OpenProxmark(void *port, bool wait_for_port, int timeout, bool flash_mode) {
+
+bool GetFromFpgaRAM(uint8_t *dest, int bytes)
+{
+ UsbCommand c = {CMD_HF_PLOT, {0, 0, 0}};
+ SendCommand(&c);
+
+ uint64_t start_time = msclock();
+
+ UsbCommand response;
+
+ int bytes_completed = 0;
+ bool show_warning = true;
+ while(true) {
+ if (getCommand(&response)) {
+ if (response.cmd == CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K) {
+ int copy_bytes = MIN(bytes - bytes_completed, response.arg[1]);
+ memcpy(dest + response.arg[0], response.d.asBytes, copy_bytes);
+ bytes_completed += copy_bytes;
+ } else if (response.cmd == CMD_ACK) {
+ return true;
+ }
+ }
+
+ 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;
+}
+
+
+bool OpenProxmark(void *port, bool wait_for_port, int timeout) {
char *portname = (char *)port;
if (!wait_for_port) {
sp = uart_open(portname);
// start the USB communication thread
serial_port_name = portname;
conn.run = true;
- conn.block_after_ACK = flash_mode;
pthread_create(&USB_communication_thread, NULL, &uart_communication, &conn);
return true;
}
// Clean up our state
sp = NULL;
serial_port_name = NULL;
+#ifdef __BIONIC__
memset(&USB_communication_thread, 0, sizeof(pthread_t));
+#endif
}
// Wait until the command is received
while (true) {
- while(getCommand(response)) {
+ while (getCommand(response)) {
if (cmd == CMD_UNKNOWN || response->cmd == cmd) {
return true;
}
projects / proxmark3-svn / blobdiff