-
-static int cread_line(const char *const prompt, char *buf, unsigned int *len,
- int timeout)
-{
- unsigned long num = 0;
- unsigned long eol_num = 0;
- unsigned long wlen;
- char ichar;
- int insert = 1;
- int esc_len = 0;
- char esc_save[8];
- int init_len = strlen(buf);
- int first = 1;
-
- if (init_len)
- cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len);
-
- while (1) {
-#ifdef CONFIG_BOOT_RETRY_TIME
- while (!tstc()) { /* while no incoming data */
- if (retry_time >= 0 && get_ticks() > endtime)
- return (-2); /* timed out */
- WATCHDOG_RESET();
- }
-#endif
- if (first && timeout) {
- uint64_t etime = endtick(timeout);
-
- while (!tstc()) { /* while no incoming data */
- if (get_ticks() >= etime)
- return -2; /* timed out */
- WATCHDOG_RESET();
- }
- first = 0;
- }
-
- ichar = getcmd_getch();
-
- if ((ichar == '\n') || (ichar == '\r')) {
- putc('\n');
- break;
- }
-
- /*
- * handle standard linux xterm esc sequences for arrow key, etc.
- */
- if (esc_len != 0) {
- if (esc_len == 1) {
- if (ichar == '[') {
- esc_save[esc_len] = ichar;
- esc_len = 2;
- } else {
- cread_add_str(esc_save, esc_len, insert,
- &num, &eol_num, buf, *len);
- esc_len = 0;
- }
- continue;
- }
-
- switch (ichar) {
-
- case 'D': /* <- key */
- ichar = CTL_CH('b');
- esc_len = 0;
- break;
- case 'C': /* -> key */
- ichar = CTL_CH('f');
- esc_len = 0;
- break; /* pass off to ^F handler */
- case 'H': /* Home key */
- ichar = CTL_CH('a');
- esc_len = 0;
- break; /* pass off to ^A handler */
- case 'A': /* up arrow */
- ichar = CTL_CH('p');
- esc_len = 0;
- break; /* pass off to ^P handler */
- case 'B': /* down arrow */
- ichar = CTL_CH('n');
- esc_len = 0;
- break; /* pass off to ^N handler */
- default:
- esc_save[esc_len++] = ichar;
- cread_add_str(esc_save, esc_len, insert,
- &num, &eol_num, buf, *len);
- esc_len = 0;
- continue;
- }
- }
-
- switch (ichar) {
- case 0x1b:
- if (esc_len == 0) {
- esc_save[esc_len] = ichar;
- esc_len = 1;
- } else {
- puts("impossible condition #876\n");
- esc_len = 0;
- }
- break;
-
- case CTL_CH('a'):
- BEGINNING_OF_LINE();
- break;
- case CTL_CH('c'): /* ^C - break */
- *buf = '\0'; /* discard input */
- return (-1);
- case CTL_CH('f'):
- if (num < eol_num) {
- getcmd_putch(buf[num]);
- num++;
- }
- break;
- case CTL_CH('b'):
- if (num) {
- getcmd_putch(CTL_BACKSPACE);
- num--;
- }
- break;
- case CTL_CH('d'):
- if (num < eol_num) {
- wlen = eol_num - num - 1;
- if (wlen) {
- memmove(&buf[num], &buf[num+1], wlen);
- putnstr(buf + num, wlen);
- }
-
- getcmd_putch(' ');
- do {
- getcmd_putch(CTL_BACKSPACE);
- } while (wlen--);
- eol_num--;
- }
- break;
- case CTL_CH('k'):
- ERASE_TO_EOL();
- break;
- case CTL_CH('e'):
- REFRESH_TO_EOL();
- break;
- case CTL_CH('o'):
- insert = !insert;
- break;
- case CTL_CH('x'):
- case CTL_CH('u'):
- BEGINNING_OF_LINE();
- ERASE_TO_EOL();
- break;
- case DEL:
- case DEL7:
- case 8:
- if (num) {
- wlen = eol_num - num;
- num--;
- memmove(&buf[num], &buf[num+1], wlen);
- getcmd_putch(CTL_BACKSPACE);
- putnstr(buf + num, wlen);
- getcmd_putch(' ');
- do {
- getcmd_putch(CTL_BACKSPACE);
- } while (wlen--);
- eol_num--;
- }
- break;
- case CTL_CH('p'):
- case CTL_CH('n'):
- {
- char * hline;
-
- esc_len = 0;
-
- if (ichar == CTL_CH('p'))
- hline = hist_prev();
- else
- hline = hist_next();
-
- if (!hline) {
- getcmd_cbeep();
- continue;
- }
-
- /* nuke the current line */
- /* first, go home */
- BEGINNING_OF_LINE();
-
- /* erase to end of line */
- ERASE_TO_EOL();
-
- /* copy new line into place and display */
- strcpy(buf, hline);
- eol_num = strlen(buf);
- REFRESH_TO_EOL();
- continue;
- }
-#ifdef CONFIG_AUTO_COMPLETE
- case '\t': {
- int num2, col;
-
- /* do not autocomplete when in the middle */
- if (num < eol_num) {
- getcmd_cbeep();
- break;
- }
-
- buf[num] = '\0';
- col = strlen(prompt) + eol_num;
- num2 = num;
- if (cmd_auto_complete(prompt, buf, &num2, &col)) {
- col = num2 - num;
- num += col;
- eol_num += col;
- }
- break;
- }
-#endif
- default:
- cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
- break;
- }
- }
- *len = eol_num;
- buf[eol_num] = '\0'; /* lose the newline */
-
- if (buf[0] && buf[0] != CREAD_HIST_CHAR)
- cread_add_to_hist(buf);
- hist_cur = hist_add_idx;
-
- return 0;
-}
-
-#endif /* CONFIG_CMDLINE_EDITING */
-
-/****************************************************************************/
-
-/*
- * Prompt for input and read a line.
- * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
- * time out when time goes past endtime (timebase time in ticks).
- * Return: number of read characters
- * -1 if break
- * -2 if timed out
- */
-int readline (const char *const prompt)
-{
- /*
- * If console_buffer isn't 0-length the user will be prompted to modify
- * it instead of entering it from scratch as desired.
- */
- console_buffer[0] = '\0';
-
- return readline_into_buffer(prompt, console_buffer, 0);
-}
-
-
-int readline_into_buffer(const char *const prompt, char *buffer, int timeout)
-{
- char *p = buffer;
-#ifdef CONFIG_CMDLINE_EDITING
- unsigned int len = CONFIG_SYS_CBSIZE;
- int rc;
- static int initted = 0;
-
- /*
- * History uses a global array which is not
- * writable until after relocation to RAM.
- * Revert to non-history version if still
- * running from flash.
- */
- if (gd->flags & GD_FLG_RELOC) {
- if (!initted) {
- hist_init();
- initted = 1;
- }
-
- if (prompt)
- puts (prompt);
-
- rc = cread_line(prompt, p, &len, timeout);
- return rc < 0 ? rc : len;
-
- } else {
-#endif /* CONFIG_CMDLINE_EDITING */
- char * p_buf = p;
- int n = 0; /* buffer index */
- int plen = 0; /* prompt length */
- int col; /* output column cnt */
- char c;
-
- /* print prompt */
- if (prompt) {
- plen = strlen (prompt);
- puts (prompt);
- }
- col = plen;
-
- for (;;) {
-#ifdef CONFIG_BOOT_RETRY_TIME
- while (!tstc()) { /* while no incoming data */
- if (retry_time >= 0 && get_ticks() > endtime)
- return (-2); /* timed out */
- WATCHDOG_RESET();
- }
-#endif
- WATCHDOG_RESET(); /* Trigger watchdog, if needed */
-
-#ifdef CONFIG_SHOW_ACTIVITY
- while (!tstc()) {
- show_activity(0);
- WATCHDOG_RESET();
- }
-#endif
- c = getc();
-
- /*
- * Special character handling
- */
- switch (c) {
- case '\r': /* Enter */
- case '\n':
- *p = '\0';
- puts ("\r\n");
- return p - p_buf;
-
- case '\0': /* nul */
- continue;
-
- case 0x03: /* ^C - break */
- p_buf[0] = '\0'; /* discard input */
- return -1;
-
- case 0x15: /* ^U - erase line */
- while (col > plen) {
- puts (erase_seq);
- --col;
- }
- p = p_buf;
- n = 0;
- continue;
-
- case 0x17: /* ^W - erase word */
- p=delete_char(p_buf, p, &col, &n, plen);
- while ((n > 0) && (*p != ' ')) {
- p=delete_char(p_buf, p, &col, &n, plen);
- }
- continue;
-
- case 0x08: /* ^H - backspace */
- case 0x7F: /* DEL - backspace */
- p=delete_char(p_buf, p, &col, &n, plen);
- continue;
-
- default:
- /*
- * Must be a normal character then
- */
- if (n < CONFIG_SYS_CBSIZE-2) {
- if (c == '\t') { /* expand TABs */
-#ifdef CONFIG_AUTO_COMPLETE
- /* if auto completion triggered just continue */
- *p = '\0';
- if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
- p = p_buf + n; /* reset */
- continue;
- }
-#endif
- puts (tab_seq+(col&07));
- col += 8 - (col&07);
- } else {
- char buf[2];
-
- /*
- * Echo input using puts() to force an
- * LCD flush if we are using an LCD
- */
- ++col;
- buf[0] = c;
- buf[1] = '\0';
- puts(buf);
- }
- *p++ = c;
- ++n;
- } else { /* Buffer full */
- putc ('\a');
- }
- }
- }
-#ifdef CONFIG_CMDLINE_EDITING
- }
-#endif
-}
-
-/****************************************************************************/
-
-static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
-{
- char *s;
-
- if (*np == 0) {
- return (p);
- }
-
- if (*(--p) == '\t') { /* will retype the whole line */
- while (*colp > plen) {
- puts (erase_seq);
- (*colp)--;
- }
- for (s=buffer; s<p; ++s) {
- if (*s == '\t') {
- puts (tab_seq+((*colp) & 07));
- *colp += 8 - ((*colp) & 07);
- } else {
- ++(*colp);
- putc (*s);
- }
- }
- } else {
- puts (erase_seq);
- (*colp)--;
- }
- (*np)--;
- return (p);
-}
-
-/****************************************************************************/
-
-int parse_line (char *line, char *argv[])
-{
- int nargs = 0;
-
- debug_parser("parse_line: \"%s\"\n", line);
- while (nargs < CONFIG_SYS_MAXARGS) {
-
- /* skip any white space */
- while (isblank(*line))
- ++line;
-
- if (*line == '\0') { /* end of line, no more args */
- argv[nargs] = NULL;
- debug_parser("parse_line: nargs=%d\n", nargs);
- return nargs;
- }
-
- argv[nargs++] = line; /* begin of argument string */
-
- /* find end of string */
- while (*line && !isblank(*line))
- ++line;
-
- if (*line == '\0') { /* end of line, no more args */
- argv[nargs] = NULL;
- debug_parser("parse_line: nargs=%d\n", nargs);
- return nargs;
- }
-
- *line++ = '\0'; /* terminate current arg */
- }
-
- printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS);
-
- debug_parser("parse_line: nargs=%d\n", nargs);
- return (nargs);
-}
-
-/****************************************************************************/
-
-#ifndef CONFIG_SYS_HUSH_PARSER
-static void process_macros (const char *input, char *output)
-{
- char c, prev;
- const char *varname_start = NULL;
- int inputcnt = strlen (input);
- int outputcnt = CONFIG_SYS_CBSIZE;
- int state = 0; /* 0 = waiting for '$' */
-
- /* 1 = waiting for '(' or '{' */
- /* 2 = waiting for ')' or '}' */
- /* 3 = waiting for ''' */
- char *output_start = output;
-
- debug_parser("[PROCESS_MACROS] INPUT len %zd: \"%s\"\n", strlen(input),
- input);
-
- prev = '\0'; /* previous character */
-
- while (inputcnt && outputcnt) {
- c = *input++;
- inputcnt--;
-
- if (state != 3) {
- /* remove one level of escape characters */
- if ((c == '\\') && (prev != '\\')) {
- if (inputcnt-- == 0)
- break;
- prev = c;
- c = *input++;
- }
- }
-
- switch (state) {
- case 0: /* Waiting for (unescaped) $ */
- if ((c == '\'') && (prev != '\\')) {
- state = 3;
- break;
- }
- if ((c == '$') && (prev != '\\')) {
- state++;
- } else {
- *(output++) = c;
- outputcnt--;
- }
- break;
- case 1: /* Waiting for ( */
- if (c == '(' || c == '{') {
- state++;
- varname_start = input;
- } else {
- state = 0;
- *(output++) = '$';
- outputcnt--;
-
- if (outputcnt) {
- *(output++) = c;
- outputcnt--;
- }
- }
- break;
- case 2: /* Waiting for ) */
- if (c == ')' || c == '}') {
- int i;
- char envname[CONFIG_SYS_CBSIZE], *envval;
- int envcnt = input - varname_start - 1; /* Varname # of chars */
-
- /* Get the varname */
- for (i = 0; i < envcnt; i++) {
- envname[i] = varname_start[i];
- }
- envname[i] = 0;
-
- /* Get its value */
- envval = getenv (envname);
-
- /* Copy into the line if it exists */
- if (envval != NULL)
- while ((*envval) && outputcnt) {
- *(output++) = *(envval++);
- outputcnt--;
- }
- /* Look for another '$' */
- state = 0;
- }
- break;
- case 3: /* Waiting for ' */
- if ((c == '\'') && (prev != '\\')) {
- state = 0;
- } else {
- *(output++) = c;
- outputcnt--;
- }
- break;
- }
- prev = c;
- }
-
- if (outputcnt)
- *output = 0;
- else
- *(output - 1) = 0;
-
- debug_parser("[PROCESS_MACROS] OUTPUT len %zd: \"%s\"\n",
- strlen(output_start), output_start);
-}
-
-/****************************************************************************
- * returns:
- * 1 - command executed, repeatable
- * 0 - command executed but not repeatable, interrupted commands are
- * always considered not repeatable
- * -1 - not executed (unrecognized, bootd recursion or too many args)
- * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
- * considered unrecognized)
- *
- * WARNING:
- *
- * We must create a temporary copy of the command since the command we get
- * may be the result from getenv(), which returns a pointer directly to
- * the environment data, which may change magicly when the command we run
- * creates or modifies environment variables (like "bootp" does).
- */
-static int builtin_run_command(const char *cmd, int flag)
-{
- char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */
- char *token; /* start of token in cmdbuf */
- char *sep; /* end of token (separator) in cmdbuf */
- char finaltoken[CONFIG_SYS_CBSIZE];
- char *str = cmdbuf;
- char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */
- int argc, inquotes;
- int repeatable = 1;
- int rc = 0;
-
- debug_parser("[RUN_COMMAND] cmd[%p]=\"", cmd);
- if (DEBUG_PARSER) {
- /* use puts - string may be loooong */
- puts(cmd ? cmd : "NULL");
- puts("\"\n");
- }
- clear_ctrlc(); /* forget any previous Control C */
-
- if (!cmd || !*cmd) {
- return -1; /* empty command */
- }
-
- if (strlen(cmd) >= CONFIG_SYS_CBSIZE) {
- puts ("## Command too long!\n");
- return -1;
- }
-
- strcpy (cmdbuf, cmd);
-
- /* Process separators and check for invalid
- * repeatable commands
- */
-
- debug_parser("[PROCESS_SEPARATORS] %s\n", cmd);
- while (*str) {
-
- /*
- * Find separator, or string end
- * Allow simple escape of ';' by writing "\;"
- */
- for (inquotes = 0, sep = str; *sep; sep++) {
- if ((*sep=='\'') &&
- (*(sep-1) != '\\'))
- inquotes=!inquotes;
-
- if (!inquotes &&
- (*sep == ';') && /* separator */
- ( sep != str) && /* past string start */
- (*(sep-1) != '\\')) /* and NOT escaped */
- break;
- }
-
- /*
- * Limit the token to data between separators
- */
- token = str;
- if (*sep) {
- str = sep + 1; /* start of command for next pass */
- *sep = '\0';
- }
- else
- str = sep; /* no more commands for next pass */
- debug_parser("token: \"%s\"\n", token);
-
- /* find macros in this token and replace them */
- process_macros (token, finaltoken);
-
- /* Extract arguments */
- if ((argc = parse_line (finaltoken, argv)) == 0) {
- rc = -1; /* no command at all */
- continue;
- }
-
- if (cmd_process(flag, argc, argv, &repeatable, NULL))
- rc = -1;
-
- /* Did the user stop this? */
- if (had_ctrlc ())
- return -1; /* if stopped then not repeatable */
- }
-
- return rc ? rc : repeatable;
-}
-#endif
-
-/*
- * Run a command using the selected parser.
- *
- * @param cmd Command to run
- * @param flag Execution flags (CMD_FLAG_...)
- * @return 0 on success, or != 0 on error.
- */
-int run_command(const char *cmd, int flag)
-{
-#ifndef CONFIG_SYS_HUSH_PARSER
- /*
- * builtin_run_command can return 0 or 1 for success, so clean up
- * its result.
- */
- if (builtin_run_command(cmd, flag) == -1)
- return 1;
-
- return 0;
-#else
- return parse_string_outer(cmd,
- FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP);
-#endif
-}
-
-#ifndef CONFIG_SYS_HUSH_PARSER
-/**
- * Execute a list of command separated by ; or \n using the built-in parser.
- *
- * This function cannot take a const char * for the command, since if it
- * finds newlines in the string, it replaces them with \0.
- *
- * @param cmd String containing list of commands
- * @param flag Execution flags (CMD_FLAG_...)
- * @return 0 on success, or != 0 on error.
- */
-static int builtin_run_command_list(char *cmd, int flag)
-{
- char *line, *next;
- int rcode = 0;
-
- /*
- * Break into individual lines, and execute each line; terminate on
- * error.
- */
- line = next = cmd;
- while (*next) {
- if (*next == '\n') {
- *next = '\0';
- /* run only non-empty commands */
- if (*line) {
- debug("** exec: \"%s\"\n", line);
- if (builtin_run_command(line, 0) < 0) {
- rcode = 1;
- break;
- }
- }
- line = next + 1;
- }
- ++next;
- }
- if (rcode == 0 && *line)
- rcode = (builtin_run_command(line, 0) >= 0);
-
- return rcode;
-}
-#endif
-
-int run_command_list(const char *cmd, int len, int flag)
-{
- int need_buff = 1;
- char *buff = (char *)cmd; /* cast away const */
- int rcode = 0;
-
- if (len == -1) {
- len = strlen(cmd);
-#ifdef CONFIG_SYS_HUSH_PARSER
- /* hush will never change our string */
- need_buff = 0;
-#else
- /* the built-in parser will change our string if it sees \n */
- need_buff = strchr(cmd, '\n') != NULL;
-#endif
- }
- if (need_buff) {
- buff = malloc(len + 1);
- if (!buff)
- return 1;
- memcpy(buff, cmd, len);
- buff[len] = '\0';
- }
-#ifdef CONFIG_SYS_HUSH_PARSER
- rcode = parse_string_outer(buff, FLAG_PARSE_SEMICOLON);
-#else
- /*
- * This function will overwrite any \n it sees with a \0, which
- * is why it can't work with a const char *. Here we are making
- * using of internal knowledge of this function, to avoid always
- * doing a malloc() which is actually required only in a case that
- * is pretty rare.
- */
- rcode = builtin_run_command_list(buff, flag);
- if (need_buff)
- free(buff);
-#endif
-
- return rcode;
-}
-
-/****************************************************************************/
-
-#if defined(CONFIG_CMD_RUN)
-int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
-{
- int i;
-
- if (argc < 2)
- return CMD_RET_USAGE;
-
- for (i=1; i<argc; ++i) {
- char *arg;
-
- if ((arg = getenv (argv[i])) == NULL) {
- printf ("## Error: \"%s\" not defined\n", argv[i]);
- return 1;
- }
-
- if (run_command(arg, flag) != 0)
- return 1;
- }
- return 0;
-}
-#endif