FreeCalypso > hg > freecalypso-tools
view loadtools/lthelp.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 | 464a531122ab |
children |
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/* * This module implements the loadtool help facility. */ #include <stdio.h> #include <ctype.h> #include <string.h> #include <strings.h> #include <stdlib.h> char loadtool_help_file[] = "/opt/freecalypso/helpfiles/loadtool.help"; loadtool_help(topic) char *topic; { FILE *f; char linebuf[256]; char *cp, *np; int flag; f = fopen(loadtool_help_file, "r"); if (!f) { perror(loadtool_help_file); return(-1); } for (;;) { if (!fgets(linebuf, sizeof linebuf, f)) { fprintf(stderr, "Help topic \"%s\" not found\n", topic); fclose(f); return(-1); } if (linebuf[0] != '=' || linebuf[1] != '=' || linebuf[2] != '=') continue; for (cp = linebuf + 3; isspace(*cp); cp++) ; for (np = cp; *cp && !isspace(*cp); cp++) ; if (*cp) *cp++ = '\0'; if (!strcmp(np, topic)) break; } for (flag = 0; fgets(linebuf, sizeof linebuf, f); ) { if (linebuf[0] == '=' && linebuf[1] == '=' && linebuf[2] == '=') { if (flag) break; else continue; } fputs(linebuf, stdout); flag = 1; } fclose(f); return(0); } cmd_help(argc, argv) char **argv; { char flashtopic[32]; switch (argc) { case 1: return loadtool_help("main"); case 2: return loadtool_help(argv[1]); case 3: if ((!strcmp(argv[1], "flash") || !strcmp(argv[1], "flash2")) && strlen(argv[2]) <= 20) { sprintf(flashtopic, "flash:%s", argv[2]); return loadtool_help(flashtopic); } fprintf(stderr, "No such help topic\n"); return(-1); default: fprintf(stderr, "internal error in cmd_help(): bad argc\n"); abort(); } }