649 lines
14 KiB
C
649 lines
14 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2013-03-30 Bernard the first verion for finsh
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* 2014-01-03 Bernard msh can execute module.
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* 2017-07-19 Aubr.Cool limit argc to RT_FINSH_ARG_MAX
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*/
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#include <rtthread.h>
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#include <finsh_config.h>
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#ifdef FINSH_USING_MSH
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#include "msh.h"
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#include <finsh.h>
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#include <shell.h>
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#ifdef RT_USING_DFS
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#include <dfs_posix.h>
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#endif
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#ifdef RT_USING_MODULE
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#include <dlmodule.h>
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#endif
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#ifndef FINSH_ARG_MAX
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#define FINSH_ARG_MAX 8
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#endif
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typedef int (*cmd_function_t)(int argc, char **argv);
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#ifdef FINSH_USING_MSH
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#ifdef FINSH_USING_MSH_ONLY
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rt_bool_t msh_is_used(void)
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{
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return RT_TRUE;
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}
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#else
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#ifdef FINSH_USING_MSH_DEFAULT
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static rt_bool_t __msh_state = RT_TRUE;
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#else
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static rt_bool_t __msh_state = RT_FALSE;
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#endif
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rt_bool_t msh_is_used(void)
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{
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return __msh_state;
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}
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static int msh_exit(int argc, char **argv)
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{
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/* return to finsh shell mode */
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__msh_state = RT_FALSE;
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(msh_exit, __cmd_exit, return to RT-Thread shell mode.);
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static int msh_enter(void)
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{
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/* enter module shell mode */
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__msh_state = RT_TRUE;
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(msh_enter, msh, use module shell);
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#endif
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int msh_help(int argc, char **argv)
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{
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rt_kprintf("RT-Thread shell commands:\n");
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{
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struct finsh_syscall *index;
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for (index = _syscall_table_begin;
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index < _syscall_table_end;
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FINSH_NEXT_SYSCALL(index))
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{
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if (strncmp(index->name, "__cmd_", 6) != 0) continue;
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#if defined(FINSH_USING_DESCRIPTION) && defined(FINSH_USING_SYMTAB)
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rt_kprintf("%-16s - %s\n", &index->name[6], index->desc);
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#else
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rt_kprintf("%s ", &index->name[6]);
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#endif
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}
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}
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rt_kprintf("\n");
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(msh_help, __cmd_help, RT-Thread shell help.);
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int cmd_ps(int argc, char **argv)
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{
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extern long list_thread(void);
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extern int list_module(void);
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#ifdef RT_USING_MODULE
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if ((argc == 2) && (strcmp(argv[1], "-m") == 0))
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list_module();
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else
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#endif
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list_thread();
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(cmd_ps, __cmd_ps, List threads in the system.);
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#ifdef RT_USING_HEAP
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int cmd_free(int argc, char **argv)
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{
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extern void list_mem(void);
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extern void list_memheap(void);
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#ifdef RT_USING_MEMHEAP_AS_HEAP
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list_memheap();
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#else
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list_mem();
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#endif
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(cmd_free, __cmd_free, Show the memory usage in the system.);
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#endif
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static int msh_split(char *cmd, rt_size_t length, char *argv[FINSH_ARG_MAX])
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{
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char *ptr;
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rt_size_t position;
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rt_size_t argc;
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rt_size_t i;
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ptr = cmd;
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position = 0; argc = 0;
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while (position < length)
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{
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/* strip bank and tab */
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while ((*ptr == ' ' || *ptr == '\t') && position < length)
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{
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*ptr = '\0';
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ptr ++; position ++;
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}
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if(argc >= FINSH_ARG_MAX)
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{
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rt_kprintf("Too many args ! We only Use:\n");
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for(i = 0; i < argc; i++)
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{
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rt_kprintf("%s ", argv[i]);
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}
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rt_kprintf("\n");
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break;
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}
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if (position >= length) break;
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/* handle string */
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if (*ptr == '"')
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{
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ptr ++; position ++;
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argv[argc] = ptr; argc ++;
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/* skip this string */
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while (*ptr != '"' && position < length)
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{
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if (*ptr == '\\')
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{
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if (*(ptr + 1) == '"')
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{
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ptr ++; position ++;
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}
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}
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ptr ++; position ++;
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}
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if (position >= length) break;
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/* skip '"' */
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*ptr = '\0'; ptr ++; position ++;
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}
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else
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{
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argv[argc] = ptr;
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argc ++;
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while ((*ptr != ' ' && *ptr != '\t') && position < length)
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{
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ptr ++; position ++;
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}
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if (position >= length) break;
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}
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}
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return argc;
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}
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static cmd_function_t msh_get_cmd(char *cmd, int size)
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{
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struct finsh_syscall *index;
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cmd_function_t cmd_func = RT_NULL;
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for (index = _syscall_table_begin;
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index < _syscall_table_end;
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FINSH_NEXT_SYSCALL(index))
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{
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if (strncmp(index->name, "__cmd_", 6) != 0) continue;
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if (strncmp(&index->name[6], cmd, size) == 0 &&
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index->name[6 + size] == '\0')
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{
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cmd_func = (cmd_function_t)index->func;
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break;
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}
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}
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return cmd_func;
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}
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#if defined(RT_USING_MODULE) && defined(RT_USING_DFS)
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/* Return 0 on module executed. Other value indicate error.
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*/
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int msh_exec_module(const char *cmd_line, int size)
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{
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int ret;
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int fd = -1;
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char *pg_name;
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int length, cmd_length = 0;
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if (size == 0)
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return -RT_ERROR;
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/* get the length of command0 */
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while ((cmd_line[cmd_length] != ' ' && cmd_line[cmd_length] != '\t') && cmd_length < size)
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cmd_length ++;
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/* get name length */
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length = cmd_length + 32;
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/* allocate program name memory */
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pg_name = (char *) rt_malloc(length);
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if (pg_name == RT_NULL)
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return -RT_ENOMEM;
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/* copy command0 */
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memcpy(pg_name, cmd_line, cmd_length);
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pg_name[cmd_length] = '\0';
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if (strstr(pg_name, ".mo") != RT_NULL || strstr(pg_name, ".MO") != RT_NULL)
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{
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/* try to open program */
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fd = open(pg_name, O_RDONLY, 0);
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/* search in /bin path */
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if (fd < 0)
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{
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rt_snprintf(pg_name, length - 1, "/bin/%.*s", cmd_length, cmd_line);
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fd = open(pg_name, O_RDONLY, 0);
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}
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}
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else
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{
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/* add .mo and open program */
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/* try to open program */
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strcat(pg_name, ".mo");
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fd = open(pg_name, O_RDONLY, 0);
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/* search in /bin path */
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if (fd < 0)
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{
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rt_snprintf(pg_name, length - 1, "/bin/%.*s.mo", cmd_length, cmd_line);
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fd = open(pg_name, O_RDONLY, 0);
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}
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}
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if (fd >= 0)
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{
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/* found program */
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close(fd);
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dlmodule_exec(pg_name, cmd_line, size);
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ret = 0;
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}
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else
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{
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ret = -1;
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}
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rt_free(pg_name);
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return ret;
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}
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int system(const char *command)
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{
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int ret = -RT_ENOMEM;
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char *cmd = rt_strdup(command);
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if (cmd)
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{
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ret = msh_exec(cmd, rt_strlen(cmd));
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rt_free(cmd);
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}
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return ret;
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}
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#endif
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static int _msh_exec_cmd(char *cmd, rt_size_t length, int *retp)
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{
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int argc;
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rt_size_t cmd0_size = 0;
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cmd_function_t cmd_func;
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char *argv[FINSH_ARG_MAX];
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RT_ASSERT(cmd);
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RT_ASSERT(retp);
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/* find the size of first command */
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while ((cmd[cmd0_size] != ' ' && cmd[cmd0_size] != '\t') && cmd0_size < length)
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cmd0_size ++;
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if (cmd0_size == 0)
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return -RT_ERROR;
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cmd_func = msh_get_cmd(cmd, cmd0_size);
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if (cmd_func == RT_NULL)
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return -RT_ERROR;
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/* split arguments */
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memset(argv, 0x00, sizeof(argv));
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argc = msh_split(cmd, length, argv);
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if (argc == 0)
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return -RT_ERROR;
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/* exec this command */
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*retp = cmd_func(argc, argv);
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return 0;
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}
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#if defined(RT_USING_LWP) && defined(RT_USING_DFS)
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static int _msh_exec_lwp(char *cmd, rt_size_t length)
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{
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int argc;
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int cmd0_size = 0;
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char *argv[FINSH_ARG_MAX];
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int fd = -1;
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char *pg_name;
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extern int exec(char*, int, char**);
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/* find the size of first command */
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while ((cmd[cmd0_size] != ' ' && cmd[cmd0_size] != '\t') && cmd0_size < length)
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cmd0_size ++;
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if (cmd0_size == 0)
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return -1;
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/* split arguments */
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rt_memset(argv, 0x00, sizeof(argv));
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argc = msh_split(cmd, length, argv);
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if (argc == 0)
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return -1;
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pg_name = argv[0];
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/* try to open program */
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fd = open(pg_name, O_RDONLY, 0);
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if (fd < 0)
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return -1;
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/* found program */
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close(fd);
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exec(pg_name, argc, argv);
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return 0;
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}
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#endif
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int msh_exec(char *cmd, rt_size_t length)
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{
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int cmd_ret;
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/* strim the beginning of command */
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while ((length > 0) && (*cmd == ' ' || *cmd == '\t'))
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{
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cmd++;
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length--;
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}
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if (length == 0)
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return 0;
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/* Exec sequence:
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* 1. built-in command
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* 2. module(if enabled)
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*/
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if (_msh_exec_cmd(cmd, length, &cmd_ret) == 0)
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{
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return cmd_ret;
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}
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#ifdef RT_USING_DFS
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#ifdef DFS_USING_WORKDIR
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if (msh_exec_script(cmd, length) == 0)
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{
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return 0;
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}
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#endif
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#ifdef RT_USING_MODULE
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if (msh_exec_module(cmd, length) == 0)
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{
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return 0;
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}
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#endif
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#ifdef RT_USING_LWP
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if (_msh_exec_lwp(cmd, length) == 0)
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{
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return 0;
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}
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#endif
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#endif
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/* truncate the cmd at the first space. */
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{
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char *tcmd;
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tcmd = cmd;
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while (*tcmd != ' ' && *tcmd != '\0')
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{
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tcmd++;
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}
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*tcmd = '\0';
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}
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rt_kprintf("%s: command not found.\n", cmd);
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return -1;
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}
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static int str_common(const char *str1, const char *str2)
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{
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const char *str = str1;
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while ((*str != 0) && (*str2 != 0) && (*str == *str2))
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{
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str ++;
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str2 ++;
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}
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return (str - str1);
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}
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#ifdef RT_USING_DFS
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void msh_auto_complete_path(char *path)
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{
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DIR *dir = RT_NULL;
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struct dirent *dirent = RT_NULL;
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char *full_path, *ptr, *index;
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if (!path)
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return;
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full_path = (char *)rt_malloc(256);
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if (full_path == RT_NULL) return; /* out of memory */
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if (*path != '/')
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{
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getcwd(full_path, 256);
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if (full_path[rt_strlen(full_path) - 1] != '/')
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strcat(full_path, "/");
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}
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else *full_path = '\0';
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index = RT_NULL;
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ptr = path;
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for (;;)
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{
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if (*ptr == '/') index = ptr + 1;
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if (!*ptr) break;
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ptr ++;
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}
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if (index == RT_NULL) index = path;
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if (index != RT_NULL)
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{
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char *dest = index;
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/* fill the parent path */
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ptr = full_path;
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while (*ptr) ptr ++;
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for (index = path; index != dest;)
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*ptr++ = *index++;
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*ptr = '\0';
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dir = opendir(full_path);
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if (dir == RT_NULL) /* open directory failed! */
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{
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rt_free(full_path);
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return;
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}
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/* restore the index position */
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index = dest;
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}
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/* auto complete the file or directory name */
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if (*index == '\0') /* display all of files and directories */
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{
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for (;;)
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{
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dirent = readdir(dir);
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if (dirent == RT_NULL) break;
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rt_kprintf("%s\n", dirent->d_name);
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}
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}
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else
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{
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rt_size_t length, min_length;
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min_length = 0;
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for (;;)
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{
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dirent = readdir(dir);
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if (dirent == RT_NULL) break;
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/* matched the prefix string */
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if (strncmp(index, dirent->d_name, rt_strlen(index)) == 0)
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{
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if (min_length == 0)
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{
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min_length = rt_strlen(dirent->d_name);
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/* save dirent name */
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strcpy(full_path, dirent->d_name);
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}
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length = str_common(dirent->d_name, full_path);
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if (length < min_length)
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{
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min_length = length;
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}
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}
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}
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if (min_length)
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{
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if (min_length < rt_strlen(full_path))
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{
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/* list the candidate */
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rewinddir(dir);
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for (;;)
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{
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dirent = readdir(dir);
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if (dirent == RT_NULL) break;
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if (strncmp(index, dirent->d_name, rt_strlen(index)) == 0)
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rt_kprintf("%s\n", dirent->d_name);
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}
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}
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length = index - path;
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memcpy(index, full_path, min_length);
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path[length + min_length] = '\0';
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}
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}
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closedir(dir);
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rt_free(full_path);
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}
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#endif
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void msh_auto_complete(char *prefix)
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{
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int length, min_length;
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const char *name_ptr, *cmd_name;
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struct finsh_syscall *index;
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min_length = 0;
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name_ptr = RT_NULL;
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if (*prefix == '\0')
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{
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msh_help(0, RT_NULL);
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return;
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}
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#ifdef RT_USING_DFS
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/* check whether a spare in the command */
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{
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char *ptr;
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ptr = prefix + rt_strlen(prefix);
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while (ptr != prefix)
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{
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if (*ptr == ' ')
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{
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msh_auto_complete_path(ptr + 1);
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break;
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}
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ptr --;
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}
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#ifdef RT_USING_MODULE
|
|
/* There is a chance that the user want to run the module directly. So
|
|
* try to complete the file names. If the completed path is not a
|
|
* module, the system won't crash anyway. */
|
|
if (ptr == prefix)
|
|
{
|
|
msh_auto_complete_path(ptr);
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
/* checks in internal command */
|
|
{
|
|
for (index = _syscall_table_begin; index < _syscall_table_end; FINSH_NEXT_SYSCALL(index))
|
|
{
|
|
/* skip finsh shell function */
|
|
if (strncmp(index->name, "__cmd_", 6) != 0) continue;
|
|
|
|
cmd_name = (const char *) &index->name[6];
|
|
if (strncmp(prefix, cmd_name, strlen(prefix)) == 0)
|
|
{
|
|
if (min_length == 0)
|
|
{
|
|
/* set name_ptr */
|
|
name_ptr = cmd_name;
|
|
/* set initial length */
|
|
min_length = strlen(name_ptr);
|
|
}
|
|
|
|
length = str_common(name_ptr, cmd_name);
|
|
if (length < min_length)
|
|
min_length = length;
|
|
|
|
rt_kprintf("%s\n", cmd_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* auto complete string */
|
|
if (name_ptr != NULL)
|
|
{
|
|
rt_strncpy(prefix, name_ptr, min_length);
|
|
}
|
|
|
|
return ;
|
|
}
|
|
#endif
|
|
|
|
#endif /* FINSH_USING_MSH */
|