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annotate uptools/libcoding/gsm7_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 decoding of GSM7-encoded data
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3 * into ASCII, ISO 8859-1 or UTF-8.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <stdio.h>
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8
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9 extern u_short gsm7_decode_table[128];
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10 extern u_short gsm7ext_decode_table[128];
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11
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12 gsm7_to_ascii_or_ext(inbuf, inlen, outbuf, outlenp, ascii_ext, newline_ok)
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13 u_char *inbuf, *outbuf;
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14 unsigned inlen, *outlenp;
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15 {
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16 u_char *inp, *endp, *outp;
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17 unsigned gsm, uni;
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18 int is_ext;
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19
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20 inp = inbuf;
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21 endp = inbuf + inlen;
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22 outp = outbuf;
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23 while (inp < endp) {
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24 gsm = *inp++;
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25 if (gsm == 0x1B && inp < endp && *inp != 0x1B && *inp != '\n'
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26 && *inp != '\r') {
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27 gsm = *inp++;
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28 uni = gsm7ext_decode_table[gsm];
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29 if (uni == '\\') {
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30 *outp++ = '\\';
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31 *outp++ = '\\';
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32 continue;
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33 }
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34 if (uni == 0x20AC && ascii_ext < 2) {
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35 *outp++ = '\\';
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36 *outp++ = 'E';
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37 continue;
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38 }
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39 is_ext = 1;
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40 } else {
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41 switch (gsm) {
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42 case 0x1B:
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43 *outp++ = '\\';
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44 *outp++ = 'e';
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45 continue;
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46 case '\n':
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47 if (newline_ok)
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48 *outp++ = '\n';
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49 else {
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50 *outp++ = '\\';
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51 *outp++ = 'n';
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52 }
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53 continue;
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54 case '\r':
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55 *outp++ = '\\';
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56 *outp++ = 'r';
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57 continue;
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58 }
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59 uni = gsm7_decode_table[gsm];
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60 is_ext = 0;
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61 }
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62 if (!uni || !is_decoded_char_ok(uni, ascii_ext)) {
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63 if (is_ext) {
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64 *outp++ = '\\';
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65 *outp++ = 'e';
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66 }
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67 sprintf(outp, "\\%02X", gsm);
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68 outp += 3;
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69 } else if (ascii_ext == 2)
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70 outp += emit_utf8_char(uni, outp);
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71 else
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72 *outp++ = uni;
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73 }
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74 *outp = '\0';
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75 if (outlenp)
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76 *outlenp = outp - outbuf;
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77 }