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annotate rvinterf/etmsync/help.c @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents 24cb10d508d7
children
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27
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1 /*
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2 * This module implements the fc-fsio help facility.
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3 */
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4
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5 #include <stdio.h>
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6 #include <ctype.h>
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7 #include <string.h>
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8 #include <strings.h>
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9 #include <stdlib.h>
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10 #include "exitcodes.h"
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11
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12 extern char help_file_pathname[];
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13
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14 show_help_topic(topic)
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15 char *topic;
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16 {
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17 FILE *f;
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18 char linebuf[256];
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19 char *cp, *np;
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20 int flag;
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21
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22 f = fopen(help_file_pathname, "r");
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23 if (!f) {
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24 perror(help_file_pathname);
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25 return(ERROR_UNIX);
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26 }
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27 for (;;) {
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28 if (!fgets(linebuf, sizeof linebuf, f)) {
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29 fprintf(stderr, "Help topic \"%s\" not found\n", topic);
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30 fclose(f);
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31 return(ERROR_USAGE);
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32 }
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33 if (linebuf[0] != '=' || linebuf[1] != '=' || linebuf[2] != '=')
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34 continue;
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35 for (cp = linebuf + 3; isspace(*cp); cp++)
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36 ;
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37 for (np = cp; *cp && !isspace(*cp); cp++)
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38 ;
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39 if (*cp)
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40 *cp++ = '\0';
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41 if (!strcmp(np, topic))
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42 break;
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43 }
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44 for (flag = 0; fgets(linebuf, sizeof linebuf, f); ) {
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45 if (linebuf[0] == '=' && linebuf[1] == '=' &&
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46 linebuf[2] == '=') {
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47 if (flag)
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48 break;
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49 else
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50 continue;
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51 }
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52 fputs(linebuf, stdout);
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53 flag = 1;
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54 }
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55 fclose(f);
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56 return(0);
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57 }
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58
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59 cmd_help(argc, argv)
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60 char **argv;
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61 {
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62 switch (argc) {
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63 case 1:
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64 return show_help_topic("main");
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65 case 2:
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66 return show_help_topic(argv[1]);
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67 default:
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68 fprintf(stderr, "internal error in cmd_help(): bad argc\n");
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69 abort();
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70 }
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71 }