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annotate libutil/plmnlist.c @ 100:dc772132b5c9

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doc/GrcardSIM2-WEKI-file: document mechanism and policy changes regarding the upper 6 bits of the mystery byte
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 05 May 2021 05:22:28 +0000
parents 34bbb0585cab
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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8
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1 /*
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2 * This module implements a function for reading PLMN lists from files.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <ctype.h>
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7 #include <stdio.h>
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8 #include <stdlib.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 extern FILE *open_script_input_file();
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13
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14 read_plmn_list_from_file(filename, buf, ef_len)
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15 char *filename;
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16 u_char *buf;
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17 unsigned ef_len;
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18 {
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19 FILE *inf;
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20 int lineno, rc;
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21 char linebuf[1024], *cp, *np;
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22 u_char *dp, *endp;
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23
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24 inf = open_script_input_file(filename);
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25 if (!inf) {
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26 perror(filename);
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27 return(-1);
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28 }
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29 dp = buf;
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30 endp = buf + ef_len;
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31 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
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32 if (!index(linebuf, '\n')) {
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33 fprintf(stderr,
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34 "%s line %d: too long or missing newline\n",
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35 filename, lineno);
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36 fclose(inf);
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37 return(-1);
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38 }
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39 for (cp = linebuf; ; ) {
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40 while (isspace(*cp))
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41 cp++;
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42 if (*cp == '\0' || *cp == '#')
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43 break;
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44 for (np = cp; *cp && !isspace(*cp); cp++)
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45 ;
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46 if (*cp)
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47 *cp++ = '\0';
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48 if (dp >= endp) {
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49 fprintf(stderr,
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50 "%s line %d: number of PLMN codes exceeds EF size\n",
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51 filename, lineno);
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52 fclose(inf);
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53 return(-1);
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54 }
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55 rc = encode_plmn_3bytes(np, dp);
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56 if (rc < 0) {
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57 fprintf(stderr, "%s line %d: invalid MCC-MNC\n",
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58 filename, lineno);
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59 fclose(inf);
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60 return(-1);
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61 }
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62 dp += 3;
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63 }
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64 }
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65 fclose(inf);
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66 while (dp < endp)
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67 *dp++ = 0xFF;
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68 return(0);
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69 }