FreeCalypso > hg > freecalypso-tools

annotate librftab/rdcommon.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 a0f79bba0ad8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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a0f79bba0ad8 librftab: reading of Tx ramp template files split from rftablerd module
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1 /*
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2 * This C file is not a compilation unit in itself, but is the common piece
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3 * (a set of static variables and functions) included in the librftab modules
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4 * responsible for reading different kinds of ASCII tables.
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5 */
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6
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7 #define MAX_FIELDS_PER_LINE 64
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8
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9 static char *filename;
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10 static FILE *rdfile;
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11 static unsigned lineno;
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12 static char linebuf[256], *line_fields[MAX_FIELDS_PER_LINE];
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13 static unsigned line_nfields, line_field_ptr;
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14
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15 static int
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16 read_line()
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17 {
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18 char *cp;
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19
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20 if (!fgets(linebuf, sizeof linebuf, rdfile))
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21 return(0);
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22 lineno++;
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23 cp = linebuf;
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24 for (line_nfields = 0; ; ) {
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25 while (isspace(*cp))
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26 cp++;
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27 if (*cp == '\0' || *cp == '#')
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28 break;
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29 if (line_nfields >= MAX_FIELDS_PER_LINE) {
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30 printf("%s line %d: too many fields on one line\n",
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31 filename, lineno);
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32 return(-1);
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33 }
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34 line_fields[line_nfields++] = cp;
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35 while (*cp && !isspace(*cp))
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36 cp++;
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37 if (*cp)
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38 *cp++ = '\0';
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39 }
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40 return(1);
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41 }
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42
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43 static
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44 get_field(retp)
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45 char **retp;
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46 {
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47 int rc;
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48
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49 if (line_field_ptr < line_nfields) {
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50 *retp = line_fields[line_field_ptr++];
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51 return(1);
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52 }
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53 do {
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54 rc = read_line();
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55 if (rc <= 0)
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56 return(rc);
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57 } while (!line_nfields);
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58 *retp = line_fields[0];
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59 line_field_ptr = 1;
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60 return(1);
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61 }