FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/dispatch.c @ 921:74d284add54d
fc-fsio: guard against bogus readdir results from the target
If the FFS being operated on contains SE K2x0 extended filenames,
readdir will return strings that are bad for printing. We need to
guard against this possibility, and also against possible other
bogosity that could be sent by other alien firmwares.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 31 Dec 2022 22:55:23 +0000 |
parents | e7502631a0f9 |
children |
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/* * This module implements the command dispatch for fc-fsio * and possibly other similar utilities in the future. */ #include <ctype.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include "cmdtab.h" #include "exitcodes.h" extern struct cmdtab cmdtab[]; parse_and_dispatch_cmd(cmd, is_script) char *cmd; { char *argv[MAX_CMD_ARGS+2]; char *cp, **ap; struct cmdtab *tp; for (cp = cmd; isspace(*cp); cp++) ; if (!*cp || *cp == '#') return(0); if (is_script) printf("Script command: %s\n", cp); argv[0] = cp; while (*cp && !isspace(*cp)) cp++; if (*cp) *cp++ = '\0'; for (tp = cmdtab; tp->cmd; tp++) if (!strcmp(tp->cmd, argv[0])) break; if (!tp->func) { fprintf(stderr, "error: no such command\n"); return(ERROR_USAGE); } for (ap = argv + 1; ; ) { while (isspace(*cp)) cp++; if (!*cp || *cp == '#') break; if (ap - argv - 1 >= tp->maxargs) { fprintf(stderr, "error: too many arguments\n"); return(ERROR_USAGE); } if (*cp == '"') { *ap++ = ++cp; while (*cp && *cp != '"') cp++; if (*cp != '"') { fprintf(stderr, "error: unterminated quoted string\n"); return(ERROR_USAGE); } *cp++ = '\0'; } else { *ap++ = cp; while (*cp && !isspace(*cp)) cp++; if (*cp) *cp++ = '\0'; } } if (ap - argv - 1 < tp->minargs) { fprintf(stderr, "error: too few arguments\n"); return(ERROR_USAGE); } *ap = 0; return tp->func(ap - argv, argv); } dispatch_ready_argv(argc, argv) char **argv; { struct cmdtab *tp; for (tp = cmdtab; tp->cmd; tp++) if (!strcmp(tp->cmd, argv[0])) break; if (!tp->func) { fprintf(stderr, "error: no such command\n"); return(ERROR_USAGE); } if (argc - 1 > tp->maxargs) { fprintf(stderr, "error: too many arguments\n"); return(ERROR_USAGE); } if (argc - 1 < tp->minargs) { fprintf(stderr, "error: too few arguments\n"); return(ERROR_USAGE); } return tp->func(argc, argv); } cmd_exec(argc, argv) char **argv; { FILE *f; char linebuf[512], *cp; int lineno, retval = 0; f = fopen(argv[1], "r"); if (!f) { perror(argv[1]); return(ERROR_USAGE); } for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) { cp = index(linebuf, '\n'); if (!cp) { fprintf(stderr, "%s line %d: missing newline\n", argv[1], lineno); fclose(f); return(ERROR_USAGE); } *cp = '\0'; retval = parse_and_dispatch_cmd(linebuf, 1); if (retval) break; } fclose(f); return(retval); } cmd_exit() { exit(0); }