/* * 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 #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; } n85'>85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131