#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "libpst.h"
#include "define.h"

#define OUT_BUF 20
int main(int argc, char **argv) {
  pst_file pstfile;
  pst_index_ll *ptr;
  char *outdir=NULL, *file=NULL, *outname=NULL;
  unsigned char *buf=NULL;
  int c;
  FILE *fp;

  while ((c=getopt(argc, argv, "o:"))!=-1) {
    switch(c) {
    case 'o':
      outdir=optarg;
      break;
    default:
      printf("Unknown switch %c\n", c);
    }
  }
  if (optind < argc) {
    file = argv[optind];
  } else {
    printf("Usage: dumpblocks [options] pstfile\n");
    printf("\tcopies the datablocks from the pst file into seperate files\n");
    printf("Options: \n");
    printf("\t-o target\tSpecify the output directory\n");
    exit(1);
  }
  DEBUG_INIT("dumpblocks.log");
  DEBUG_REGISTER_CLOSE();
  DEBUG_ENT("main");

  printf("Opening file %s\n",file);
  if (pst_open(&pstfile, file, "r")) {
    printf("Failed to open file %s\n", file);
    exit(1);
  }

  printf("Reading Indexes\n");
  if (pst_load_index(&pstfile)) {
    printf("Failed to load indexes in file %s\n", argv[1]);
    exit(1);
   }

  if (outdir != NULL)
    if (chdir(outdir)) {
      printf("Failed to change into directory %s\n", outdir);
      exit(1);
    }

  ptr = pstfile.i_head;
  outname = (char*) xmalloc(OUT_BUF);
  printf("Saving blocks\n");
  while (ptr != NULL) {
    /*    if (pstfile.encryption == PST_ENC) {
      c = pst_ff_getIDblock_dec(&pstfile, ptr->id, buf);
      } else {*/
    if ((ptr->id & 0x02)==0 && pstfile.encryption == PST_ENC) {
      c = pst_ff_getIDblock_dec(&pstfile, ptr->id, &buf);
    } else {
      c = pst_ff_getIDblock(&pstfile, ptr->id, &buf);
    }

    if (c > 0) {
      snprintf(outname, OUT_BUF, "%llx", ptr->id);
      if ((fp = fopen(outname, "wb")) == NULL) {
	printf("Failed to open file %s\n", outname);
	continue;
      }
      fwrite(buf, 1, c, fp);
      fclose(fp);
    } else {
      printf("Failed to read block id %#llx\n", ptr->id);
    }
    ptr = ptr->next;
  }
  pst_close(&pstfile);
  DEBUG_RET();
  return 0;
}