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chry_shell.c
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chry_shell.c
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/*
* Copyright (c) 2022, Egahp
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <signal.h>
#include "csh.h"
#if defined(CONFIG_CSH_DEBUG) && CONFIG_CSH_DEBUG
#define CHRY_SHELL_PARAM_CHECK(__expr, __ret) \
do { \
if (!(__expr)) { \
return __ret; \
} \
} while (0)
#else
#define CHRY_SHELL_PARAM_CHECK(__expr, __ret) ((void)0)
#endif
#if defined(__CC_ARM) || defined(__CLANG_ARM) || defined(__GNUC__) || defined(__ADSPBLACKFIN__)
#ifndef __weak
#define __weak __attribute__((weak))
#endif
#else
#ifndef __weak
#define __weak
#endif
#endif
#define chry_shell_offsetof(type, member) ((size_t) & (((type *)0)->member))
#define chry_shell_container_of(ptr, type, member) ((type *)((char *)(ptr)-chry_shell_offsetof(type, member)))
/*!< prompt segment index */
#define CSH_PROMPT_SEG_USER 0
#define CSH_PROMPT_SEG_HOST 2
#define CSH_PROMPT_SEG_PATH 4
extern void chry_shell_port_default_handler(chry_shell_t *csh, int sig);
extern int chry_shell_port_create_context(chry_shell_t *csh, int argc, const char **argv);
extern int chry_shell_port_hash_strcmp(const char *hash, const char *str);
#if defined(CONFIG_CSH_MULTI_THREAD) && CONFIG_CSH_MULTI_THREAD
/* static const uint8_t sigmap[CSH_SIGNAL_COUNT] = { CSH_SIGINT, CSH_SIGQUIT, CSH_SIGKILL, CSH_SIGTERM, CSH_SIGSTOP, CSH_SIGTSTP, CSH_SIGCONT }; */
#if !defined(CONFIG_CSH_SIGNAL_HANDLER) || (CONFIG_CSH_SIGNAL_HANDLER == 0)
static chry_sighandler_t sighdl[CSH_SIGNAL_COUNT] = {
chry_shell_port_default_handler,
chry_shell_port_default_handler,
chry_shell_port_default_handler,
chry_shell_port_default_handler,
chry_shell_port_default_handler,
chry_shell_port_default_handler,
chry_shell_port_default_handler,
};
#endif
/*****************************************************************************
* @brief default signal handler
*
* @param[in] signum signal number
*
*****************************************************************************/
__weak void chry_shell_port_default_handler(chry_shell_t *csh, int sig)
{
(void)csh;
switch (sig) {
case CSH_SIGINT:
break;
case CSH_SIGQUIT:
break;
case CSH_SIGKILL:
break;
case CSH_SIGTERM:
break;
case CSH_SIGSTOP:
break;
case CSH_SIGTSTP:
break;
case CSH_SIGCONT:
break;
default:
break;
}
}
/*****************************************************************************
* @brief create context to execute
*
* @param[in] csh shell instance
* @param[in] argc argument count
* @param[in] argv argument value
*
* @retval 0:success -1:error
*****************************************************************************/
__weak int chry_shell_port_create_context(chry_shell_t *csh, int argc, const char **argv)
{
(void)csh;
(void)argc;
(void)argv;
return -1;
}
/*****************************************************************************
* @brief conversion signum
*
* @param[in] signum signal number
*
* @retval 0<= signal index -1:not find
*****************************************************************************/
/*
static int chry_shell_conversion_signum(int signum)
{
int sigidx = -1;
for (uint8_t i = 0; i < CSH_SIGNAL_COUNT; i++) {
if (sigmap[i] == signum) {
sigidx = i;
break;
}
}
return sigidx;
}
*/
#endif
/*****************************************************************************
* @brief hash str then compare
*
* @param[in] hash hash
* @param[in] str string
*
* @retval 0:Equal 1:hash>str -1:str>hash
*****************************************************************************/
__weak int chry_shell_port_hash_strcmp(const char *hash, const char *str)
{
/*!< simple demo */
return strcmp(hash, str);
}
#if defined(CONFIG_CSH_COMPLETION) && CONFIG_CSH_COMPLETION
/*****************************************************************************
* @brief completion callback
*
* @param[in] rl readline instance
* @param[in] pre pre string
* @param[in] size strlen(pre)
* @param[in] argv argument value (completion)
* @param[in] argl argument length (completion length)
* @param[in] argcmax argument max count (max completion count)
*
* @retval argc:argument count, max is argcmax
*****************************************************************************/
static uint8_t chry_shell_completion_callback(chry_readline_t *rl, char *pre, uint16_t *size, const char **argv, uint8_t *argl, uint8_t argcmax)
{
chry_shell_t *csh = chry_shell_container_of(rl, chry_shell_t, rl);
uint8_t argc = 0;
if (*size == 0) {
return argc;
}
/*!< environment variable */
if (*size && pre[0] == '$') {
pre++; /*!< skip $ */
*size = *size - 1; /*!< skip $ */
for (const chry_sysvar_t *var = csh->var_tbl_beg; var < csh->var_tbl_end; var++) {
if (strncmp(pre, var->name, *size) == 0) {
argv[argc] = var->name;
argl[argc] = strlen(var->name);
argc++;
if (argc >= argcmax) {
break;
}
}
}
return argc;
}
const char *PATH = NULL;
uint8_t Pargc;
uint8_t Pargl[CONFIG_CSH_MAXSEG_PATH + 1];
const char *Pargv[CONFIG_CSH_MAXSEG_PATH + 1];
if (((*size >= 1) && (pre[0] == '/')) ||
((*size >= 2) && (pre[0] == '.') && (pre[1] == '/')) ||
((*size >= 3) && (pre[0] == '.') && (pre[1] == '.') && (pre[2] == '/'))) {
/*!< search from the current path */
PATH = csh->path;
} else {
/*!< search from the environment PATH */
for (const chry_sysvar_t *var = csh->var_tbl_beg; var < csh->var_tbl_end; var++) {
if (strcmp("PATH", var->name) == 0) {
PATH = var->var;
break;
}
}
}
while (PATH != NULL) {
Pargc = chry_shell_path_resolve(PATH, pre, Pargv, Pargl, CONFIG_CSH_MAXSEG_PATH + 1);
*size = Pargl[Pargc - 1];
/*!< match from system path */
for (const chry_syscall_t *call = csh->cmd_tbl_beg; call < csh->cmd_tbl_end; call++) {
uint8_t clen = 0;
const char *cpath_next;
const char *cpath_prev = NULL;
const char *cpath = call->path;
bool match = true;
for (uint8_t Pargi = 0;; Pargi++) {
if (Pargi >= Pargc) {
bool exist = false;
for (uint8_t i = 0; i < argc; i++) {
if ((clen == argl[i]) && (strncmp(argv[i], cpath_prev, clen) == 0)) {
exist = true;
break;
}
}
if (exist == false) {
argv[argc] = cpath_prev;
argl[argc] = clen;
argc++;
if (argc >= argcmax) {
return argc;
}
}
break;
}
if ((cpath == NULL) || (match == false)) {
break;
}
cpath++;
if (strncmp(cpath, Pargv[Pargi], Pargl[Pargi]) != 0) {
break;
}
cpath_next = strchr(cpath, '/');
if (cpath_next == NULL) {
clen = strlen(cpath);
} else {
clen = (uint8_t)(cpath_next - cpath);
}
match = (clen == Pargl[Pargi]);
cpath_prev = cpath;
if (cpath != call->name) {
cpath = cpath_next == NULL ? (call->name - 1) : cpath_next;
} else {
cpath = cpath_next;
}
}
}
/*!< match from port of file system */
PATH = strchr(PATH, ':');
PATH = (PATH != NULL) ? PATH + 1 : PATH;
}
return argc;
}
#endif
#if defined(CONFIG_CSH_USER_CALLBACK) && CONFIG_CSH_USER_CALLBACK
/*****************************************************************************
* @brief user callback
*
* @param[in] rl readline instance
* @param[in] exec exec code
*
* @retval status
*****************************************************************************/
static int chry_shell_user_callback(chry_readline_t *rl, uint8_t exec)
{
chry_shell_t *csh = chry_shell_container_of(rl, chry_shell_t, rl);
(void)csh;
/*!< user event callback will not output newline automatically */
switch (exec) {
case CHRY_READLINE_EXEC_EOF:
chry_readline_newline(rl);
break;
#if defined(CONFIG_CSH_MULTI_THREAD) && CONFIG_CSH_MULTI_THREAD
#if defined(CONFIG_CSH_SIGNAL_HANDLER) && CONFIG_CSH_SIGNAL_HANDLER
case CHRY_READLINE_EXEC_SIGINT:
csh->sighdl[0](csh, CSH_SIGINT);
return 0;
case CHRY_READLINE_EXEC_SIGQUIT:
csh->sighdl[1](csh, CSH_SIGQUIT);
return 0;
case CHRY_READLINE_EXEC_SIGCONT:
csh->sighdl[6](csh, CSH_SIGCONT);
return 1;
case CHRY_READLINE_EXEC_SIGSTOP:
csh->sighdl[4](csh, CSH_SIGSTOP);
return 1;
case CHRY_READLINE_EXEC_SIGTSTP:
csh->sighdl[5](csh, CSH_SIGTSTP);
return 1;
#else
case CHRY_READLINE_EXEC_SIGINT:
sighdl[0](csh, CSH_SIGINT);
return 0;
case CHRY_READLINE_EXEC_SIGQUIT:
sighdl[1](csh, CSH_SIGQUIT);
return 0;
case CHRY_READLINE_EXEC_SIGCONT:
sighdl[6](csh, CSH_SIGCONT);
return 1;
case CHRY_READLINE_EXEC_SIGSTOP:
sighdl[4](csh, CSH_SIGSTOP);
return 1;
case CHRY_READLINE_EXEC_SIGTSTP:
sighdl[5](csh, CSH_SIGTSTP);
return 1;
#endif
#else
case CHRY_READLINE_EXEC_SIGINT:
return 0;
case CHRY_READLINE_EXEC_SIGQUIT:
return 0;
case CHRY_READLINE_EXEC_SIGCONT:
return 1;
case CHRY_READLINE_EXEC_SIGSTOP:
return 1;
case CHRY_READLINE_EXEC_SIGTSTP:
return 1;
#endif
case CHRY_READLINE_EXEC_F1 ... CHRY_READLINE_EXEC_F12:
chry_readline_newline(rl);
break;
case CHRY_READLINE_EXEC_USER ... CHRY_READLINE_EXEC_END:
chry_readline_newline(rl);
break;
default:
return -1;
}
/*!< return 1 will not refresh */
/*!< return 0 to refresh whole line (include prompt) */
/*!< return -1 to end readline (error) */
return 0;
}
#endif
/*****************************************************************************
* @brief init shell
*
* @param[in] csh shell instance
* @param[in] init init config
*
* @retval 0:Success -1:Error
*****************************************************************************/
int chry_shell_init(chry_shell_t *csh, const chry_shell_init_t *init)
{
CHRY_SHELL_PARAM_CHECK(NULL != csh, -1);
CHRY_SHELL_PARAM_CHECK(NULL != init, -1);
CHRY_SHELL_PARAM_CHECK(NULL != init->sget, -1);
CHRY_SHELL_PARAM_CHECK(NULL != init->sput, -1);
#if defined(CONFIG_CSH_PROMPTEDIT) && CONFIG_CSH_PROMPTEDIT
CHRY_SHELL_PARAM_CHECK(NULL != init->prompt_buffer, -1);
#endif
#if defined(CONFIG_CSH_HISTORY) && CONFIG_CSH_HISTORY
CHRY_SHELL_PARAM_CHECK(NULL != init->history_buffer, -1);
#endif
#if defined(CONFIG_CSH_LNBUFF_STATIC) && CONFIG_CSH_LNBUFF_STATIC
CHRY_SHELL_PARAM_CHECK(NULL != init->line_buffer, -1);
#endif
int ret = 0;
chry_readline_init_t rl_init;
/*!< do readline init */
#if defined(CONFIG_CSH_PROMPTEDIT) && CONFIG_CSH_PROMPTEDIT
rl_init.prompt = init->prompt_buffer;
rl_init.pptsize = init->prompt_buffer_size;
#else
rl_init.prompt = "$ ";
rl_init.pptsize = 3;
#endif
rl_init.history = init->history_buffer;
rl_init.histsize = init->history_buffer_size;
rl_init.sput = init->sput;
rl_init.sget = init->sget;
if (chry_readline_init(&csh->rl, &rl_init)) {
return -1;
}
csh->cmd_tbl_beg = init->command_table_beg;
csh->cmd_tbl_end = init->command_table_end;
csh->var_tbl_beg = init->variable_table_beg;
csh->var_tbl_end = init->variable_table_end;
#if defined(CONFIG_CSH_LNBUFF_STATIC) && CONFIG_CSH_LNBUFF_STATIC
csh->linebuff = init->line_buffer;
csh->buffsize = init->line_buffer_size;
csh->linesize = 0;
#endif
csh->exec_code = 0;
csh->exec = CSH_STATUS_EXEC_IDLE;
/*!< set default user id */
if ((init->uid >= CONFIG_CSH_MAX_USER) || (init->uid < 0)) {
return -1;
}
csh->uid = init->uid;
/*!< set host name */
if (strnlen(init->host, 255) == 255) {
return -1;
}
csh->host = init->host;
/*!< set users name */
for (uint8_t i = 0; i < CONFIG_CSH_MAX_USER; i++) {
if (strnlen(init->user[i], 255) == 255) {
return -1;
}
if (strnlen(init->hash[i], 255) == 255) {
return -1;
}
csh->user[i] = init->user[i];
csh->hash[i] = init->hash[i];
}
/*!< set default path */
#if defined(CONFIG_CSH_MAXLEN_PATH) && CONFIG_CSH_MAXLEN_PATH
csh->path[0] = '/';
csh->path[1] = '\0';
#else
csh->path = "/";
#endif
csh->data = NULL;
csh->user_data = init->user_data;
#if defined(CONFIG_CSH_COMPLETION) && CONFIG_CSH_COMPLETION
chry_readline_set_completion_cb(&csh->rl, chry_shell_completion_callback);
#endif
#if defined(CONFIG_CSH_USER_CALLBACK) && CONFIG_CSH_USER_CALLBACK
chry_readline_set_user_cb(&csh->rl, chry_shell_user_callback);
#endif
#if defined(CONFIG_CSH_PROMPTEDIT) && CONFIG_CSH_PROMPTEDIT
ret |= chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_USER, (chry_readline_sgr_t){ .foreground = CHRY_READLINE_SGR_GREEN, .bold = 1 }.raw, csh->user[csh->uid]);
ret |= chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_USER + 1, (chry_readline_sgr_t){ .foreground = CHRY_READLINE_SGR_GREEN, .bold = 1 }.raw, "@");
ret |= chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_HOST, (chry_readline_sgr_t){ .foreground = CHRY_READLINE_SGR_GREEN, .bold = 1 }.raw, csh->host);
ret |= chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_HOST + 1, 0, ":");
ret |= chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_PATH, (chry_readline_sgr_t){ .foreground = CHRY_READLINE_SGR_BLUE, .bold = 1 }.raw, csh->path);
ret |= chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_PATH + 1, 0, "$ ");
#else
#endif
return ret;
}
/*****************************************************************************
* @brief execute task internal
*
* @param[in] csh shell instance
*
*****************************************************************************/
static void chry_shell_task_exec_internal(chry_shell_t *csh, int argc, const char **argv)
{
volatile uint8_t *pexec = (void *)&csh->exec;
volatile int *pcode = (void *)&csh->exec_code;
/*!< if stage find */
if (*pexec == CSH_STATUS_EXEC_FIND) {
/*!< stage prepare */
*pexec = CSH_STATUS_EXEC_PREP;
*pcode = ((chry_syscall_func_t)argv[argc + 2])(argc, (void *)argv);
/*!< stage done */
*pexec = CSH_STATUS_EXEC_DONE;
}
}
/*****************************************************************************
* @brief execute task
*
* @param[in] csh shell instance
*
*****************************************************************************/
void chry_shell_task_exec(chry_shell_t *csh)
{
CHRY_SHELL_PARAM_CHECK(NULL != csh, );
(void)csh;
#if defined(CONFIG_CSH_MULTI_THREAD) && CONFIG_CSH_MULTI_THREAD
chry_shell_task_exec_internal(csh, csh->exec_argc, &csh->exec_argv[0]);
#endif
}
/*****************************************************************************
* @brief read eval print loop task
*
* @param[in] csh shell instance
*
* @retval 0:Success -1:Error 1:Continue
*****************************************************************************/
int chry_shell_task_repl(chry_shell_t *csh)
{
CHRY_SHELL_PARAM_CHECK(NULL != csh, -1);
char *csh_linebuff;
uint16_t *csh_linesize;
#if defined(CONFIG_CSH_LNBUFF_STATIC) && CONFIG_CSH_LNBUFF_STATIC
csh_linebuff = csh->linebuff;
csh_linesize = &csh->linesize;
char *line = chry_readline(&csh->rl, csh_linebuff, csh->buffsize, csh_linesize);
#else
char linebuff[CONFIG_CSH_LNBUFF_SIZE];
uint16_t linesize;
csh_linebuff = linebuff;
csh_linesize = &linesize;
char *line = chry_readline(&csh->rl, csh_linebuff, CONFIG_CSH_LNBUFF_SIZE, csh_linesize);
#endif
if (line == NULL) {
return -1;
} else if (line == (void *)-1) {
return 1;
} else if (*csh_linesize) {
int *argc;
const char **argv;
volatile uint8_t *pexec = (void *)&csh->exec;
volatile uint32_t *pcode = (void *)&csh->exec_code;
*pcode = 0xBAD2BE8E; /*!< a magic number */
#if defined(CONFIG_CSH_MULTI_THREAD) && CONFIG_CSH_MULTI_THREAD
argc = &csh->exec_argc;
argv = &csh->exec_argv[0];
#else
int csh_exec_argc;
const char *csh_exec_argv[CONFIG_CSH_MAX_ARG + 3];
argc = &csh_exec_argc;
argv = &csh_exec_argv[0];
#endif
*argc = chry_shell_parse(line, *csh_linesize, argv, CONFIG_CSH_MAX_ARG + 1);
/*!< compile environment variable */
for (uint8_t i = 0; i < *argc;) {
if (argv[i][0] == '$') {
const char *param = chry_shell_getenv(csh, argv[i] + 1);
if (param == NULL) {
memmove(&argv[i], &argv[i + 1], (*argc - i) * sizeof(char *));
*argc = (*argc > 0) ? *argc - 1 : 0;
} else {
argv[i] = param;
i++;
}
} else {
i++;
}
}
argv[*argc + 1] = (void *)csh;
argv[*argc + 2] = NULL;
if (*argc) {
uint8_t size = strlen(argv[0]);
const char *PATH = NULL;
uint8_t Pargc;
uint8_t Pargl[CONFIG_CSH_MAXSEG_PATH + 1];
const char *Pargv[CONFIG_CSH_MAXSEG_PATH + 1];
if (((size >= 1) && (argv[0][0] == '/')) ||
((size >= 2) && (argv[0][0] == '.') && (argv[0][1] == '/')) ||
((size >= 3) && (argv[0][0] == '.') && (argv[0][1] == '.') && (argv[0][2] == '/'))) {
/*!< search from the current path */
PATH = csh->path;
} else {
/*!< search from the environment PATH */
for (const chry_sysvar_t *var = csh->var_tbl_beg; var < csh->var_tbl_end; var++) {
if (strcmp("PATH", var->name) == 0) {
PATH = var->var;
break;
}
}
}
while (PATH != NULL) {
Pargc = chry_shell_path_resolve(PATH, argv[0], Pargv, Pargl, CONFIG_CSH_MAXSEG_PATH + 1);
/*!< match from system path */
for (const chry_syscall_t *call = csh->cmd_tbl_beg; call < csh->cmd_tbl_end; call++) {
uint8_t clen = 0;
const char *cpath_next;
const char *cpath = call->path;
for (uint8_t Pargi = 0;; Pargi++) {
if (Pargi >= Pargc) {
if (cpath == NULL) {
/*!< match success */
argv[*argc + 2] = (void *)call->func;
goto found;
} else {
/*!< argv[0] end */
break;
}
}
if (cpath == NULL) {
/*!< path+name end */
break;
}
cpath++;
if (strncmp(cpath, Pargv[Pargi], Pargl[Pargi]) != 0) {
/*!< match failed */
break;
}
cpath_next = strchr(cpath, '/');
if (cpath_next == NULL) {
clen = strlen(cpath);
} else {
clen = (uint8_t)(cpath_next - cpath);
}
if (clen != Pargl[Pargi]) {
/*!< len not equal */
break;
}
if (cpath != call->name) {
cpath = cpath_next == NULL ? (call->name - 1) : cpath_next;
} else {
cpath = cpath_next;
}
}
}
/*!< match from port of file system */
PATH = strchr(PATH, ':');
PATH = (PATH != NULL) ? PATH + 1 : PATH;
}
found:
if (NULL == argv[*argc + 2]) {
*pexec = CSH_STATUS_EXEC_IDLE;
csh->rl.sput(&csh->rl, argv[0], strlen(argv[0]));
csh->rl.sput(&csh->rl, ": command not found" CONFIG_CSH_NEWLINE CONFIG_CSH_NEWLINE,
19 + (sizeof(CONFIG_CSH_NEWLINE) ? (sizeof(CONFIG_CSH_NEWLINE) - 1) * 2 : 0));
} else {
#if defined(CONFIG_CSH_MULTI_THREAD) && CONFIG_CSH_MULTI_THREAD
*pexec = CSH_STATUS_EXEC_FIND;
chry_readline_ignore(&csh->rl, true); /*!< accepts only signal inputs */
chry_readline_auto_refresh(&csh->rl, false);
/*!< reset signal handler to default */
for (uint8_t i = 0; i < CSH_SIGNAL_COUNT; i++) {
#if defined(CONFIG_CSH_SIGNAL_HANDLER) && CONFIG_CSH_SIGNAL_HANDLER
csh->sighdl[i] = chry_shell_port_default_handler;
#else
sighdl[i] = chry_shell_port_default_handler;
#endif
}
/*!< try to create execute context */
if (0 != chry_shell_port_create_context(csh, *argc, argv)) {
*pexec = CSH_STATUS_EXEC_IDLE;
csh->rl.sput(&csh->rl, argv[0], strlen(argv[0]));
csh->rl.sput(&csh->rl, ": context creation error" CONFIG_CSH_NEWLINE CONFIG_CSH_NEWLINE,
24 + (sizeof(CONFIG_CSH_NEWLINE) ? (sizeof(CONFIG_CSH_NEWLINE) - 1) * 2 : 0));
}
#else
*pexec = CSH_STATUS_EXEC_FIND;
chry_shell_task_exec_internal(csh, *argc, argv);
*pexec = CSH_STATUS_EXEC_IDLE;
#endif
}
}
return 0;
}
return 0;
}
/*****************************************************************************
* @brief parse line to argc,argv[]
*
* @param[in] line read line
* @param[in] linesize strlen(line)
* @param[out] argv argument value
* @param[out] argcmax max argument count (max segment count)
*
* @retval argc:argument count, max is argcmax
*****************************************************************************/
int chry_shell_parse(char *line, uint32_t linesize, const char **argv, uint8_t argcmax)
{
int argc = 0;
bool ignore = false;
bool start = false;
bool escape = false;
argcmax = (argcmax > 0) ? argcmax - 1 : argcmax;
while (linesize) {
char c = *line;
if (c == '\0') {
break;
} else if ((escape == false) && (c == '\\')) {
escape = true;
memmove(line, line + 1, linesize);
line--;
} else if ((escape == false) && (ignore == false) && (c == ' ')) {
start = false;
*line = '\0';
} else if ((escape == false) && (c == '"')) {
memmove(line, line + 1, linesize);
line--;
ignore = !ignore;
} else if (!start) {
argv[argc] = line;
if (argc < argcmax) {
argc++;
} else {
break;
}
start = true;
escape = false;
} else {
escape = false;
}
line++;
linesize--;
}
*line = '\0';
argv[argc] = NULL;
return argc;
}
/*****************************************************************************
* @brief resolve path to argc,argv[],argl[]
*
* @param[in] cur current path
* @param[in] path path
* @param[out] argv argument value (path segment)
* @param[out] argl argument length (path segment length)
* @param[out] argcmax argument max count (max segment count)
*
* @retval argc:argument count, max is argcmax
*****************************************************************************/
int chry_shell_path_resolve(const char *cur, const char *path, const char **argv, uint8_t *argl, uint8_t argcmax)
{
uint8_t len;
uint8_t argc = 0;
bool expr;
if (cur == NULL || path == NULL) {
return argc;
}
expr = (*path == '/') || ((cur[0] == '/') && (cur[1] == '\0'));
if (expr) {
cur = path;
}
argcmax = (argcmax > 0) ? argcmax - 1 : argcmax;
resolve:
while ((cur != NULL) && (*cur != '\0') && (*cur != ':')) {
while (*cur == '/') {
cur++;
}
argv[argc] = cur;
cur = strchr(cur, '/');
if (cur == NULL) {
len = strlen(argv[argc]);
} else {
len = (uint8_t)(cur - argv[argc]);
const char *sep = memchr(argv[argc], ':', len);
if (sep != NULL) {
len = (uint8_t)(sep - argv[argc]);
cur = NULL;
}
}
if (len == 1) {
bool match_dot1 = argv[argc][0] == '.';
if (!match_dot1) {
argl[argc] = len;
argc++;
}
} else if (len == 2) {
bool match_dot1 = argv[argc][0] == '.';
bool match_dot2 = argv[argc][1] == '.';
if (match_dot1 && match_dot2) {
if (argc > 0) {
argc--;
}
} else {
argl[argc] = len;
argc++;
}
} else {
argl[argc] = len;
argc++;
}
if (argc >= argcmax) {
argv[argc] = NULL;
argl[argc] = 0;
return argcmax;
}
}
if (!expr) {
cur = path;
expr = true;
goto resolve;
}
argv[argc] = NULL;
argl[argc] = 0;
return argc;
}
/*****************************************************************************
* @brief set host
*
* @param[in] csh shell instance
* @param[in] host pointer of host
*
* @retval 0:Success -1:Error
*****************************************************************************/
int chry_shell_set_host(chry_shell_t *csh, const char *host)
{
CHRY_SHELL_PARAM_CHECK(NULL != csh, -1);
CHRY_SHELL_PARAM_CHECK(NULL != host, -1);
if (strnlen(host, 255) == 255) {
return -1;
}
csh->host = host;
return chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_HOST, (chry_readline_sgr_t){ .foreground = CHRY_READLINE_SGR_GREEN, .bold = 1 }.raw, csh->host);
}
/*****************************************************************************
* @brief set user
*
* @param[in] csh shell instance
* @param[in] uid user id
* @param[in] user pointer of user
* @param[in] user pointer of user password hash
*
* @retval 0:Success -1:Error
*****************************************************************************/
int chry_shell_set_user(chry_shell_t *csh, uint8_t uid, const char *user, const char *hash)
{
CHRY_SHELL_PARAM_CHECK(NULL != csh, -1);
CHRY_SHELL_PARAM_CHECK(NULL != user, -1);
if (uid < CONFIG_CSH_MAX_USER) {
if (strnlen(user, 255) == 255) {
return -1;
}
if (strnlen(hash, 255) == 255) {
return -1;
}
csh->user[uid] = user;
csh->hash[uid] = hash;
if (uid == csh->uid) {
return chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_USER, (chry_readline_sgr_t){ .foreground = CHRY_READLINE_SGR_GREEN, .bold = 1 }.raw, csh->user[uid]);
}
return 0;
}
return -1;
}
/*****************************************************************************
* @brief set path
*
* @param[in] csh shell instance
* @param[in] size strlen(path) + 1, include \0.
* ignore when CONFIG_CSH_MAXLEN_PATH = 0
* @param[in] path shell instance
*
* @retval 0:Success -1:Error
*****************************************************************************/
int chry_shell_set_path(chry_shell_t *csh, uint8_t size, const char *path)
{
CHRY_SHELL_PARAM_CHECK(NULL != csh, -1);
CHRY_SHELL_PARAM_CHECK(NULL != path, -1);
#if defined(CONFIG_CSH_MAXLEN_PATH) && CONFIG_CSH_MAXLEN_PATH
if (size > CONFIG_CSH_MAXLEN_PATH) {
return -1;
}
memcpy(csh->path, path, size);
csh->path[size] = '\0';
#else
if (strnlen(path, 255) == 255) {
return -1;
}
csh->path = path;
#endif
return chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_PATH, (chry_readline_sgr_t){ .foreground = CHRY_READLINE_SGR_BLUE, .bold = 1 }.raw, csh->path);
}
/*****************************************************************************
* @brief get path
*
* @param[in] csh shell instance
* @param[in] size path buffer size
* @param[in] path path buffer
*
*****************************************************************************/
void chry_shell_get_path(chry_shell_t *csh, uint8_t size, char *path)
{
CHRY_SHELL_PARAM_CHECK(NULL != csh, );
CHRY_SHELL_PARAM_CHECK(NULL != path, );
#if defined(CONFIG_CSH_MAXLEN_PATH) && CONFIG_CSH_MAXLEN_PATH
size = size < CONFIG_CSH_MAXLEN_PATH ? size : CONFIG_CSH_MAXLEN_PATH;
#endif
strncpy(path, csh->path, size);
path[size - 1] = '\0';
}
/*****************************************************************************
* @brief substitute user
*
* @param[in] csh shell instance
* @param[in] uid user id
* @param[in] password password
*
* @retval 0:Success -1:Error
*****************************************************************************/
int chry_shell_substitute_user(chry_shell_t *csh, uint8_t uid, const char *password)
{
CHRY_SHELL_PARAM_CHECK(NULL != csh, -1);
if (uid < CONFIG_CSH_MAX_USER) {
if (csh->hash[uid]) {
if (chry_shell_port_hash_strcmp(csh->hash[uid], password) != 0) {
return -1;
}
}
csh->uid = uid;
return chry_readline_prompt_edit(&csh->rl, CSH_PROMPT_SEG_USER, (chry_readline_sgr_t){ .foreground = CHRY_READLINE_SGR_GREEN, .bold = 1 }.raw, csh->user[uid]);
}