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annotate libnumdb/readbin.c @ 171:4f1f3f799295

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doc/Codec-library-depend: article written
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 21 Nov 2022 01:01:39 -0800
parents ffd48df829a7
children
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ffd48df829a7 beginning of libnumdb: reading the binary file
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * This library module contains the code that reads /var/gsm/number-db.bin,
ffd48df829a7 beginning of libnumdb: reading the binary file
Mychaela Falconia <falcon@freecalypso.org>
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3 * as well as definitions of global variables into which the booty is read.
ffd48df829a7 beginning of libnumdb: reading the binary file
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4 */
ffd48df829a7 beginning of libnumdb: reading the binary file
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5
ffd48df829a7 beginning of libnumdb: reading the binary file
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6 #include <sys/types.h>
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Mychaela Falconia <falcon@freecalypso.org>
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7 #include <sys/stat.h>
ffd48df829a7 beginning of libnumdb: reading the binary file
Mychaela Falconia <falcon@freecalypso.org>
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8 #include <stdio.h>
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Mychaela Falconia <falcon@freecalypso.org>
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9 #include <stdint.h>
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10 #include <stdlib.h>
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11 #include <syslog.h>
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12 #include "../include/number_db_file.h"
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13
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Mychaela Falconia <falcon@freecalypso.org>
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14 char numdb_pathname[] = "/var/gsm/number-db.bin";
ffd48df829a7 beginning of libnumdb: reading the binary file
Mychaela Falconia <falcon@freecalypso.org>
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15 struct stat numdb_file_stat;
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16 struct numdb_file_hdr numdb_hdr;
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Mychaela Falconia <falcon@freecalypso.org>
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17 uint64_t *numdb_owned_numbers;
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18 struct short_number_map *numdb_short_numbers;
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19
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Mychaela Falconia <falcon@freecalypso.org>
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20 read_number_db()
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Mychaela Falconia <falcon@freecalypso.org>
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21 {
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22 FILE *inf;
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23
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24 inf = fopen(numdb_pathname, "r");
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Mychaela Falconia <falcon@freecalypso.org>
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25 if (!inf) {
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26 syslog(LOG_CRIT, "open %s: %m", numdb_pathname);
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Mychaela Falconia <falcon@freecalypso.org>
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27 return(-1);
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28 }
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29 fstat(fileno(inf), &numdb_file_stat);
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30 if (!S_ISREG(numdb_file_stat.st_mode)) {
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31 syslog(LOG_CRIT, "invalid %s: not a regular file",
ffd48df829a7 beginning of libnumdb: reading the binary file
Mychaela Falconia <falcon@freecalypso.org>
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32 numdb_pathname);
ffd48df829a7 beginning of libnumdb: reading the binary file
Mychaela Falconia <falcon@freecalypso.org>
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33 fclose(inf);
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Mychaela Falconia <falcon@freecalypso.org>
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34 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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35 }
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Mychaela Falconia <falcon@freecalypso.org>
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36 if (fread(&numdb_hdr, sizeof numdb_hdr, 1, inf) != 1) {
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Mychaela Falconia <falcon@freecalypso.org>
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37 read_err: syslog(LOG_CRIT, "error reading from %s: %m", numdb_pathname);
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38 fclose(inf);
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39 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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40 }
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Mychaela Falconia <falcon@freecalypso.org>
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41 if (numdb_hdr.owned_number_count) {
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Mychaela Falconia <falcon@freecalypso.org>
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42 numdb_owned_numbers = malloc(numdb_hdr.owned_number_count *
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Mychaela Falconia <falcon@freecalypso.org>
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43 sizeof(uint64_t));
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Mychaela Falconia <falcon@freecalypso.org>
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44 if (!numdb_owned_numbers) {
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45 syslog(LOG_CRIT, "malloc for owned number db: %m");
ffd48df829a7 beginning of libnumdb: reading the binary file
Mychaela Falconia <falcon@freecalypso.org>
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46 fclose(inf);
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Mychaela Falconia <falcon@freecalypso.org>
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47 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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48 }
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Mychaela Falconia <falcon@freecalypso.org>
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49 if (fread(numdb_owned_numbers, sizeof(uint64_t),
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Mychaela Falconia <falcon@freecalypso.org>
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50 numdb_hdr.owned_number_count, inf) !=
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Mychaela Falconia <falcon@freecalypso.org>
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51 numdb_hdr.owned_number_count)
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52 goto read_err;
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53 }
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Mychaela Falconia <falcon@freecalypso.org>
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54 if (numdb_hdr.short_number_count) {
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55 numdb_short_numbers = malloc(numdb_hdr.short_number_count *
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56 sizeof(struct short_number_map));
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Mychaela Falconia <falcon@freecalypso.org>
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57 if (!numdb_short_numbers) {
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58 syslog(LOG_CRIT, "malloc for short number db: %m");
ffd48df829a7 beginning of libnumdb: reading the binary file
Mychaela Falconia <falcon@freecalypso.org>
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59 fclose(inf);
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Mychaela Falconia <falcon@freecalypso.org>
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60 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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61 }
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Mychaela Falconia <falcon@freecalypso.org>
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62 if (fread(numdb_short_numbers, sizeof(struct short_number_map),
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Mychaela Falconia <falcon@freecalypso.org>
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63 numdb_hdr.short_number_count, inf) !=
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Mychaela Falconia <falcon@freecalypso.org>
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64 numdb_hdr.short_number_count)
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65 goto read_err;
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Mychaela Falconia <falcon@freecalypso.org>
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66 }
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Mychaela Falconia <falcon@freecalypso.org>
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67 fclose(inf);
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Mychaela Falconia <falcon@freecalypso.org>
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68 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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69 }