FreeCalypso > hg > freecalypso-tools

annotate uptools/libcoding/ucs2_decode.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 30fbaa652ea5
children
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1 /*
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2 * This library module implements the conversion of UCS2-encoded data
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3 * (typically received in SMS) into ASCII, ISO 8859-1 or UTF-8,
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4 * maintaining parallelism with the corresponding function for decoding
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5 * GSM7-encoded data.
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6 */
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7
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8 #include <sys/types.h>
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9 #include <stdio.h>
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10
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11 ucs2_to_ascii_or_ext(inbuf, inlen, outbuf, outlenp, ascii_ext, newline_ok)
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12 u_char *inbuf, *outbuf;
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13 unsigned inlen, *outlenp;
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14 {
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15 u_char *inp, *endp, *outp;
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16 unsigned uni;
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17
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18 inp = inbuf;
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19 endp = inbuf + (inlen & ~1);
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20 outp = outbuf;
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21 while (inp < endp) {
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22 if ((endp - inp) >= 4 && (inp[0] & 0xFC) == 0xD8 &&
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23 (inp[2] & 0xFC) == 0xDC) {
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24 uni = ((inp[0] & 3) << 18) | (inp[1] << 10) |
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25 ((inp[2] & 3) << 8) | inp[3];
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26 inp += 4;
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27 uni += 0x10000;
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28 if (ascii_ext == 2)
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29 outp += emit_utf8_char(uni, outp);
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30 else {
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31 sprintf(outp, "\\U%06X", uni);
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32 outp += 8;
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33 }
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34 continue;
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35 }
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36 uni = (inp[0] << 8) | inp[1];
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37 inp += 2;
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38 if (uni == '\\') {
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39 *outp++ = '\\';
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40 *outp++ = '\\';
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41 } else if (uni == '\r') {
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42 *outp++ = '\\';
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43 *outp++ = 'r';
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44 } else if (uni == '\n') {
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45 if (newline_ok)
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46 *outp++ = '\n';
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47 else {
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48 *outp++ = '\\';
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49 *outp++ = 'n';
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50 }
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51 } else if (!is_decoded_char_ok(uni, ascii_ext)) {
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52 sprintf(outp, "\\u%04X", uni);
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53 outp += 6;
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54 } else if (ascii_ext == 2)
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55 outp += emit_utf8_char(uni, outp);
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56 else
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57 *outp++ = uni;
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58 }
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59 *outp = '\0';
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60 if (outlenp)
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61 *outlenp = outp - outbuf;
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62 }