FreeCalypso > hg > freecalypso-tools

annotate loadtools/lacrc32.c @ 921:74d284add54d

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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 5385aca4d813
children
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640
5385aca4d813 fc-loadtool module refactoring: CRC-32 functions split out
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1 /*
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2 * This module implements the function for getting a CRC-32 computation
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3 * from loadagent.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <stdio.h>
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8 #include <stdint.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include <stdlib.h>
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12
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13 extern char target_response_line[];
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14
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15 crc32_on_target(area_base, area_len, retptr)
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16 u_long area_base, area_len, *retptr;
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17 {
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18 char arg1[10], arg2[10], *argv[4];
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19 int stat;
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20 char *strtoul_endp;
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21
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22 sprintf(arg1, "%lx", area_base);
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23 sprintf(arg2, "%lx", area_len);
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24 argv[0] = "crc32";
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25 argv[1] = arg1;
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26 argv[2] = arg2;
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27 argv[3] = 0;
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28 tpinterf_make_cmd(argv);
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29 if (tpinterf_send_cmd() < 0)
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30 return(-1);
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31 stat = tpinterf_capture_output_oneline(10); /* 10 s timeout */
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32 if (stat != 1) {
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33 errout: fprintf(stderr, "error: malformed response to crc32 command\n");
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34 return(-1);
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35 }
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36 if (strlen(target_response_line) != 8)
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37 goto errout;
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38 *retptr = strtoul(target_response_line, &strtoul_endp, 16);
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39 if (strtoul_endp != target_response_line + 8)
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40 goto errout;
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41 return(0);
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42 }