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authorFredrik Thulin <fredrik@thulin.net>2016-06-16 16:17:20 +0200
committerFredrik Thulin <fredrik@thulin.net>2016-06-16 16:17:20 +0200
commitb61dc669d8b01b49b3a5eb5b494d4270bb4c1b0b (patch)
treed888d6c2453d9da7df27db96a4df54d58d2431bd /projects/hsm/mgmt-cli.c
parentbba436de5395bda8c83a31720a4243eba2646086 (diff)
parente961e9818193acbb18c503830a554e52285e096b (diff)
Merge branch 'master' into ft-ks_flash
Diffstat (limited to 'projects/hsm/mgmt-cli.c')
-rw-r--r--projects/hsm/mgmt-cli.c214
1 files changed, 214 insertions, 0 deletions
diff --git a/projects/hsm/mgmt-cli.c b/projects/hsm/mgmt-cli.c
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+/*
+ * mgmt-cli.c
+ * ---------
+ * Management CLI code.
+ *
+ * Copyright (c) 2016, NORDUnet A/S All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the NORDUnet nor the names of its contributors may
+ * be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include "stm-init.h"
+#include "stm-uart.h"
+#include "stm-led.h"
+
+#include "mgmt-cli.h"
+#include "mgmt-dfu.h"
+#include "mgmt-fpga.h"
+#include "mgmt-misc.h"
+#include "mgmt-show.h"
+
+/* MGMT UART interrupt receive buffer (data will be put in a larger ring buffer) */
+volatile uint8_t uart_rx;
+
+#ifndef CLI_UART_RECVBUF_SIZE
+#define CLI_UART_RECVBUF_SIZE 256 /* This must be a power of 2 */
+#endif
+#define CLI_UART_RECVBUF_MASK (CLI_UART_RECVBUF_SIZE - 1)
+
+typedef struct {
+ uint32_t enabled, ridx;
+ mgmt_cli_dma_state_t rx_state;
+ uint8_t buf[CLI_UART_RECVBUF_SIZE];
+} uart_ringbuf_t;
+
+volatile uart_ringbuf_t uart_ringbuf = {1, 0, DMA_RX_STOP, {0}};
+
+#define RINGBUF_RIDX(rb) (rb.ridx & CLI_UART_RECVBUF_MASK)
+#define RINGBUF_WIDX(rb) (sizeof(rb.buf) - __HAL_DMA_GET_COUNTER(huart_mgmt.hdmarx))
+#define RINGBUF_COUNT(rb) ((unsigned)(RINGBUF_WIDX(rb) - RINGBUF_RIDX(rb)))
+#define RINGBUF_READ(rb, dst) {dst = rb.buf[RINGBUF_RIDX(rb)]; rb.buf[RINGBUF_RIDX(rb)] = '.'; rb.ridx++;}
+
+static void uart_cli_print(struct cli_def *cli __attribute__ ((unused)), const char *buf)
+{
+ char crlf[] = "\r\n";
+ uart_send_string2(STM_UART_MGMT, buf);
+ uart_send_string2(STM_UART_MGMT, crlf);
+}
+
+static int uart_cli_read(struct cli_def *cli __attribute__ ((unused)), void *buf, size_t count)
+{
+ uint32_t timeout = 0xffffff;
+ while (count && timeout) {
+ if (RINGBUF_COUNT(uart_ringbuf)) {
+ RINGBUF_READ(uart_ringbuf, *(uint8_t *) buf);
+ buf++;
+ count--;
+ }
+ timeout--;
+ }
+ if (! timeout) return 0;
+
+ return 1;
+}
+
+static int uart_cli_write(struct cli_def *cli __attribute__ ((unused)), const void *buf, size_t count)
+{
+ uart_send_bytes(STM_UART_MGMT, (uint8_t *) buf, count);
+ return (int) count;
+}
+
+int control_mgmt_uart_dma_rx(mgmt_cli_dma_state_t state)
+{
+ if (state == DMA_RX_START) {
+ if (uart_ringbuf.rx_state != DMA_RX_START) {
+ memset((void *) uart_ringbuf.buf, 0, sizeof(uart_ringbuf.buf));
+
+ /* Start receiving data from the UART using DMA */
+ HAL_UART_Receive_DMA(&huart_mgmt, (uint8_t *) uart_ringbuf.buf, sizeof(uart_ringbuf.buf));
+ uart_ringbuf.ridx = 0;
+ uart_ringbuf.rx_state = DMA_RX_START;
+ }
+ return 1;
+ } else if (state == DMA_RX_STOP) {
+ if (HAL_UART_DMAStop(&huart_mgmt) != HAL_OK) return 0;
+ uart_ringbuf.rx_state = DMA_RX_STOP;
+ return 1;
+ }
+ return 0;
+}
+
+static int embedded_cli_loop(struct cli_def *cli)
+{
+ unsigned char c;
+ int n = 0;
+ static struct cli_loop_ctx ctx;
+
+ memset(&ctx, 0, sizeof(ctx));
+ ctx.insertmode = 1;
+
+ cli->state = CLI_STATE_LOGIN;
+
+ /* start off in unprivileged mode */
+ cli_set_privilege(cli, PRIVILEGE_UNPRIVILEGED);
+ cli_set_configmode(cli, MODE_EXEC, NULL);
+
+ cli_error(cli, "%s", cli->banner);
+
+ while (1) {
+ cli_loop_start_new_command(cli, &ctx);
+
+ control_mgmt_uart_dma_rx(DMA_RX_START);
+
+ while (1) {
+ cli_loop_show_prompt(cli, &ctx);
+
+ n = cli_loop_read_next_char(cli, &ctx, &c);
+
+ /*
+ cli_print(cli, "Next char: '%c'/%i, ringbuf ridx %i, widx %i",
+ c, (int) c,
+ uart_ringbuf.ridx,
+ RINGBUF_WIDX(uart_ringbuf)
+ */
+ if (n == CLI_LOOP_CTRL_BREAK)
+ break;
+ if (n == CLI_LOOP_CTRL_CONTINUE)
+ continue;
+
+ n = cli_loop_process_char(cli, &ctx, c);
+ if (n == CLI_LOOP_CTRL_BREAK)
+ break;
+ if (n == CLI_LOOP_CTRL_CONTINUE)
+ continue;
+ }
+
+ if (ctx.l < 0)
+ continue;
+
+ /* cli_print(cli, "Process command: '%s'", ctx.cmd); */
+ n = cli_loop_process_cmd(cli, &ctx);
+ if (n == CLI_LOOP_CTRL_BREAK)
+ break;
+ }
+
+ return CLI_OK;
+}
+
+static void mgmt_cli_init(struct cli_def *cli)
+{
+ cli_init(cli);
+ cli_read_callback(cli, uart_cli_read);
+ cli_write_callback(cli, uart_cli_write);
+ cli_print_callback(cli, uart_cli_print);
+ cli_set_banner(cli, "Cryptech Alpha");
+ cli_set_hostname(cli, "cryptech");
+ cli_telnet_protocol(cli, 0);
+}
+
+static int check_auth(const char *username, const char *password)
+{
+ if (strcasecmp(username, "ct") != 0)
+ return CLI_ERROR;
+ if (strcasecmp(password, "ct") != 0)
+ return CLI_ERROR;
+ return CLI_OK;
+}
+
+int cli_main(void)
+{
+ static struct cli_def cli;
+
+ mgmt_cli_init(&cli);
+ cli_set_auth_callback(&cli, check_auth);
+
+ configure_cli_show(&cli);
+ configure_cli_fpga(&cli);
+ configure_cli_misc(&cli);
+ configure_cli_dfu(&cli);
+
+ while (1) {
+ embedded_cli_loop(&cli);
+ /* embedded_cli_loop returns when the user enters 'quit' or 'exit' */
+ cli_print(&cli, "\nLogging out...\n");
+ }
+
+ /*NOTREACHED*/
+ return -1;
+}