FreeCalypso > hg > freecalypso-tools

annotate target-utils/libcommon/cmdentry.c @ 1011:6d9b10633f10

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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 e7502631a0f9
children
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1 /*
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2 * This module implements ASCII command entry via the serial port,
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3 * with normal echo and minimal editing (rubout and kill).
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4 *
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5 * The command string buffer is bss-allocated here as well. It is
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6 * sized to allow a maximum-size S-record to be sent as a command,
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7 * as that is how we expect flash loading and XRAM chain-loading
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8 * to be done.
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9 */
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10
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11 #define MAXCMD 527
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12
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13 char command[MAXCMD+1];
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14
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15 /*
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16 * The command_entry() function takes no arguments, and begins by waiting
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17 * for serial input - hence the prompt should be printed before calling it.
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18 *
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19 * This function returns when one of the following characters is received:
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20 * CR - accepts the command
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21 * ^C or ^U - cancels the command
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22 *
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23 * The return value is non-zero if a non-empty command was accepted with CR,
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24 * or 0 if the user hit CR with no input or if the command was canceled
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25 * with ^C or ^U. In any case a CRLF is sent out the serial port
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26 * to close the input echo line before this function returns.
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27 */
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28 command_entry()
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29 {
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30 int inlen, ch;
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31
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32 for (inlen = 0; ; ) {
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33 ch = mygetchar();
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34 if (ch >= ' ' && ch <= '~') {
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35 if (inlen < MAXCMD) {
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36 command[inlen++] = ch;
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37 putchar(ch);
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38 } else
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39 /* putchar(7) */;
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40 continue;
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41 }
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42 switch (ch) {
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43 case '\r':
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44 case '\n':
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45 command[inlen] = '\0';
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46 putchar('\n');
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47 return(inlen);
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48 case '\b': /* BS */
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49 case 0x7F: /* DEL */
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50 if (inlen) {
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51 putchar('\b');
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52 putchar(' ');
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53 putchar('\b');
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54 inlen--;
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55 } else
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56 /* putchar(7) */;
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57 continue;
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58 case 0x03: /* ^C */
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59 putchar('^');
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60 putchar('C');
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61 putchar('\n');
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62 return(0);
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63 case 0x15: /* ^U */
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64 putchar('^');
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65 putchar('U');
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66 putchar('\n');
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67 return(0);
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68 default:
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69 /* putchar(7) */;
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70 }
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71 }
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72 }