FreeCalypso > hg > freecalypso-tools

annotate rvinterf/libprint/hexdump.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 65953c172f24
children
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1 /*
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2 * The function contained in this module implements hex dump functionality:
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3 * an arbitrary binary packet is dumped in hex, line by line, calling an output
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4 * function for each line.
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5 */
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6
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7 #include <sys/types.h>
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8 #include <stdio.h>
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9 #include <string.h>
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10 #include <strings.h>
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11
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12 void
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13 packet_hex_dump(src, srclen, outfunc)
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14 u_char *src;
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15 unsigned srclen;
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16 void (*outfunc)();
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17 {
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18 u_char *sp = src;
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19 unsigned remain = srclen;
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20 unsigned offset = 0;
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21 unsigned chunk;
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22 char line[80], *dp;
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23 int i, c;
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24
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25 while (remain) {
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26 sprintf(line, "%04X: ", offset);
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27 dp = line + 7;
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28 chunk = remain;
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29 if (chunk > 16)
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30 chunk = 16;
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31 for (i = 0; i < 16; i++) {
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32 if (i < chunk)
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33 sprintf(dp, "%02X ", sp[i]);
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34 else
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35 strcpy(dp, " ");
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36 dp += 3;
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37 if (i == 7 || i == 15)
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38 *dp++ = ' ';
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39 }
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40 for (i = 0; i < chunk; i++) {
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41 c = sp[i];
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42 if (c < ' ' || c > '~')
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43 c = '.';
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44 *dp++ = c;
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45 }
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46 *dp = '\0';
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47 outfunc(line);
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48 sp += chunk;
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49 remain -= chunk;
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50 offset += chunk;
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51 }
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52 }