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annotate uptools/libcoding/utf8_decode2.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 6bf473f77fc4
children
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83c755829e31 uptools/libcoding: added function for turning UTF-8 into UCS-2
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1 /*
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2 * This library module implements the function for converting UTF-8 input
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3 * to UCS-2 in outgoing SMS composition.
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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 <ctype.h>
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8
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9 static int
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10 handle_escape(ipp, outp)
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11 u_char **ipp;
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12 unsigned *outp;
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13 {
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14 unsigned c, n, acc;
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15
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16 c = *(*ipp)++;
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17 switch (c) {
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18 case '"':
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19 case '\\':
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20 *outp = c;
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21 return(0);
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22 case 'n':
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23 *outp = '\n';
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24 return(0);
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25 case 'r':
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26 *outp = '\r';
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27 return(0);
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28 case 'u':
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29 acc = 0;
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30 for (n = 0; n < 4; n++) {
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31 c = *(*ipp)++;
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32 if (!isxdigit(c))
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33 return(-3);
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34 acc <<= 4;
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35 acc |= decode_hex_digit(c);
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36 }
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37 *outp = acc;
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38 return(0);
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39 default:
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40 return(-3);
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41 }
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42 }
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43
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44 utf8_to_ucs2(inbuf, outbuf, outmax, outlenp, allow_escape)
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45 u_char *inbuf;
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46 u_short *outbuf;
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47 unsigned outmax, *outlenp;
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48 {
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49 u_char *ip = inbuf;
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50 u_short *op = outbuf;
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51 unsigned outcnt = 0, c, n, uni;
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52 int rc;
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53
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54 while (c = *ip++) {
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55 if (c == '\\' && allow_escape) {
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56 rc = handle_escape(&ip, &uni);
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57 if (rc < 0)
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58 return(rc);
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59 goto gotuni;
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60 }
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61 if (c < 0x80) {
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62 uni = c;
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63 goto gotuni;
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64 }
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65 if (c < 0xC0 || c > 0xEF)
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66 return(-1);
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67 uni = c & 0x1F;
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68 if (c >= 0xE0)
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69 n = 2;
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70 else
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71 n = 1;
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72 for (; n; n--) {
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73 c = *ip++;
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74 if (c < 0x80 || c > 0xBF)
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75 return(-1);
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76 uni <<= 6;
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77 uni |= c & 0x3F;
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78 }
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79 gotuni: if (outcnt >= outmax)
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80 return(-2);
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81 *op++ = uni;
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82 outcnt++;
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83 }
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84 *outlenp = outcnt;
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85 return(0);
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86 }