FreeCalypso > hg > freecalypso-tools

annotate libpwon/readconf.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 7d1df6d831e4
children ab54957dbe35
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
571
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1 #include <ctype.h>
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2 #include <stdio.h>
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3 #include <stdlib.h>
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4 #include <string.h>
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5 #include <strings.h>
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6
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7 static char conf_file_pathname[] = "/opt/freecalypso/bootctrl.conf";
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8
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9 #define MAX_BOOTCTRL_CONF_LINE 510
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10
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11 char bootctrl_pwon_cmd[MAX_BOOTCTRL_CONF_LINE+1];
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12
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13 find_bootctrl_entry(soughtname)
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14 char *soughtname;
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15 {
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16 FILE *inf;
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17 char linebuf[MAX_BOOTCTRL_CONF_LINE+2];
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18 int lineno;
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19 char *cp, *np;
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20
736
7d1df6d831e4 libpwon: added -Pdtr and -Prts support for DUART28C
Mychaela Falconia <falcon@freecalypso.org>
parents: 571
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21 if (bootctrl_check_duart28c(soughtname))
7d1df6d831e4 libpwon: added -Pdtr and -Prts support for DUART28C
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22 return(0);
571
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23 inf = fopen(conf_file_pathname, "r");
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24 if (!inf) {
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25 perror(conf_file_pathname);
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26 return(-1);
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27 }
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28 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
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29 cp = index(linebuf, '\n');
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30 if (!cp) {
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31 fprintf(stderr,
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32 "%s line %d: too long or missing newline\n",
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33 conf_file_pathname, lineno);
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34 fclose(inf);
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35 return(-1);
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36 }
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37 *cp = '\0';
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38 for (cp = linebuf; isspace(*cp); cp++)
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39 ;
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40 if (*cp == '\0' || *cp == '#')
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41 continue;
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42 for (np = cp; *cp && !isspace(*cp); cp++)
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43 ;
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44 if (!*cp) {
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45 invalid_syntax: fprintf(stderr, "%s line %d: invalid syntax\n",
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46 conf_file_pathname, lineno);
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47 fclose(inf);
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48 return(-1);
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49 }
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50 *cp++ = '\0';
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51 while (isspace(*cp))
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52 cp++;
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53 if (*cp == '\0' || *cp == '#')
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54 goto invalid_syntax;
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55 if (!strcmp(np, soughtname)) {
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56 strcpy(bootctrl_pwon_cmd, cp);
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57 fclose(inf);
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58 return(0);
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59 }
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60 }
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61 fclose(inf);
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62 fprintf(stderr, "error: no \"%s\" entry found in %s\n", soughtname,
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63 conf_file_pathname);
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64 return(-1);
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65 }