ipphone5-phonebook.c

   1 #include <unistd.h>     /* read,write,close */
   2 #include <string.h>     /* str* */
   3 #include <stdlib.h>     /* atoi */
   4 #include <stdio.h>      /* FILE,fprintf */
   5
   6 #define SETTINGS_HINT "sh"
   7
   8 #define TOTAL_SETTINGS_SIZE 4096
   9
  10 #define SPEED_DIAL_BEGIN 0x0200
  11 #define SPEED_DIAL_NUM 100
  12 #define SPEED_DIAL_LEN 32
  13 #define PHONE_NUMBER_LEN 16
  14
  15 void display_phonebook(FILE *filehandle, int start, int end) {
  16         char buffer[SPEED_DIAL_LEN*SPEED_DIAL_NUM], *pos;
  17         if (start < 0) start = 0;
  18         if (end > (SPEED_DIAL_NUM - 1)) end = SPEED_DIAL_NUM - 1;
  19         fseek(filehandle, SPEED_DIAL_BEGIN + (SPEED_DIAL_LEN * start), SEEK_SET);
  20         pos = buffer + (SPEED_DIAL_LEN * start);
  21         fread(pos, SPEED_DIAL_LEN, (end - start + 1), filehandle);
  22         fprintf(stdout, "#index:number:name\n");
  23         while (start <= end) {
  24                 // FIXME: should not be ".16" but something like ".%d",PHONE_NUMBER_LEN
  25                 fprintf(stdout, "%d:%.16s:%.16s\n", start, pos, pos + PHONE_NUMBER_LEN);
  26                 pos += SPEED_DIAL_LEN;
  27                 start++;
  28         }
  29 }
  30
  31 int change_phonebook(FILE *filehandle, int index, const char *number, const char *name) {
  32         char buffer[SPEED_DIAL_LEN];
  33         if (index < 0 || (SPEED_DIAL_NUM - 1) < index) return -1;
  34         strncpy(buffer, number, PHONE_NUMBER_LEN);
  35         strncpy(buffer + PHONE_NUMBER_LEN, name, SPEED_DIAL_LEN - PHONE_NUMBER_LEN);
  36         fseek(filehandle, SPEED_DIAL_BEGIN + (SPEED_DIAL_LEN * index), SEEK_SET);
  37         if (fwrite(buffer, SPEED_DIAL_LEN, 1, filehandle) != 1) return -2;
  38         return 0;
  39 }
  40
  41 int main(int argc, const char *argv[]) {
  42         const char *progname, *filename, *extension;
  43         FILE *filehandle;
  44         size_t length;
  45
  46         // check arguments count
  47         progname = argv[0];
  48         if (argc < 2 || 5 < argc) {
  49                 fprintf(stderr, "Syntax: %s <filename> [<index>[-<end>] [<new-number> [<new-name>]]]\n", progname);
  50                 return 1;
  51         }
  52         filename = argv[1];
  53
  54         // check first argument (filename)
  55         filehandle = fopen(filename, "r+b");
  56         if (filehandle == NULL) {
  57                 fprintf(stderr, "Unable to open '%s' !\n", filename);
  58                 return 2;
  59         }
  60         // fprintf(stdout, "# File name: %s\n", filename);
  61
  62         // check file type (by extension, for now...)
  63         extension = strrchr(filename, '.');
  64         if (extension && strcasecmp(extension, ".sh")) {
  65                 fprintf(stderr, "Unknown file type!\n");
  66                 return 2;
  67         }
  68
  69         // check file size
  70         fseek(filehandle, 0L, SEEK_END);
  71         length = ftell(filehandle);
  72         if (length != TOTAL_SETTINGS_SIZE) {
  73                 fprintf(stderr, "Invalid file size (%d != %d) !\n", length, TOTAL_SETTINGS_SIZE);
  74                 return 3;
  75         }
  76         // fprintf(stdout, "# File length: %d bytes\n", length);
  77
  78         // proceed as requested
  79         if (argc < 4) {
  80                 int start, end;
  81                 if (argc > 2) {
  82                         char *pos, tmp[8]; /* "NNN-NNN\0" */
  83                         strncpy(tmp, argv[2], sizeof(tmp));
  84                         tmp[sizeof(tmp)-1] = '\0';
  85                         pos = strchr(tmp, '-');
  86                         if (pos) {
  87                                 *(pos++) = 0;
  88                                 start = atoi(tmp);
  89                                 end = *pos ? atoi(pos) : (SPEED_DIAL_NUM - 1);
  90                         } else {
  91                                 start = end = atoi(tmp);
  92                         }
  93                 } else {
  94                         start = 0;
  95                         end = SPEED_DIAL_NUM - 1;
  96                 }
  97                 display_phonebook(filehandle, start, end);
  98         } else {
  99                 int index;
 100                 const char *number, *name;
 101                 index = atoi(argv[2]);
 102                 number = argv[3];
 103                 name = (argc >= 5) ? argv[4] : "";
 104                 change_phonebook(filehandle, index, number, name);
 105         }
 106
 107         // cleaning
 108         fclose(filehandle);
 109         return 0;
 110 }