int
main(int argc, char **argv) {
int ret = 0;
EncData *e;
if(argc != 2) {
fprintf(stderr,"Usage: %s filename\n", argv[0]);
exit(1);
}
FILE *file;
if((file = fopen(argv[1], "r")) == 0) {
fprintf(stderr,"Error: file %s not found\n", argv[1]);
exit(2);
}
// int ch;
e = calloc(1,sizeof(EncData));
if(!openPDF(file,e)) {
fprintf(stderr, "Error: Not a valid PDF\n");
ret = 3;
goto out;
}
ret = getEncryptedInfo(file, e);
if(ret != 0) {
if(ret == EENCNF)
fprintf(stderr, "Error: Could not extract encryption information\n");
else if(ret == ETRANF)
fprintf(stderr, "Error: First trailer not found\n");
else if(ret == ETRENF)
fprintf(stderr, "Error: Encryption object not found in trailer\n");
else if(ret == ETRINF)
fprintf(stderr, "Error: ID object not found in trailer\n");
ret = 4;
goto out;
}
printEncData(e);
freeEncData(e);
if(fclose(file) != 0) {
fprintf(stderr, "Error: closing file %s\n", argv[1]);
}
return 0;
out:
freeEncData(e);
if(fclose(file) != 0) {
fprintf(stderr, "Error: closing file %s\n", argv[1]);
}
exit(ret);
}
int
main(int argc, char** argv) {
int ret = 0, minpw = 0, maxpw = 32;
struct sigaction act1, act2;
FILE *file = NULL, *wordlist = NULL;
bool recovery = false, quiet = false,
work_with_user = true, permutation = false;
uint8_t *userpassword = NULL;
char *charset = NULL, *inputfile = NULL, *wordlistfile = NULL;
EncData *e;
/** Parse arguments */
while(true) {
int c, option_index;
static struct option long_options[] = {
{"bench", no_argument , 0, 'b'},
{"charset", required_argument, 0, 'c'},
{"file", required_argument, 0, 'f'},
{"loadState",required_argument, 0, 'l'},
{"maxpw", required_argument, 0, 'm'},
{"minpw", required_argument, 0, 'n'},
{"owner", no_argument , 0, 'o'},
{"password", required_argument, 0, 'p'},
{"quiet", required_argument, 0, 'q'},
{"permutate",no_argument, 0, 's'},
{"user", no_argument , 0, 'u'},
{"wordlist", required_argument, 0, 'w'},
{"version", no_argument , 0, 'v'},
{0, 0, 0, 0}};
/* getopt_long stores the option index here. */
option_index = 0;
c = getopt_long(argc, argv, "bc:f:l:m:n:op:qsuw:v",
long_options, &option_index);
/* Detect the end of the options. */
if(c == -1)
break;
switch(c) {
case 'b':
runBenchmark();
return 0;
case 'c':
if(charset)
fprintf(stderr,"Charset already set\n");
else
charset = strdup(optarg);
break;
case 'f':
if(!recovery)
inputfile = strdup(optarg);
break;
case 'l':
if(inputfile) {
free(inputfile);
inputfile = NULL;
}
inputfile = strdup(optarg);
recovery = true;
break;
case 'm':
maxpw = atoi(optarg);
break;
case 'n':
minpw = atoi(optarg);
break;
case 'o':
work_with_user = false;
break;
case 'p':
userpassword = (uint8_t*)strdup(optarg);
work_with_user = false;
break;
case 'q':
quiet = true;
break;
case 'u':
if(!work_with_user) {
fprintf(stderr, "Cannot work with both user- and owner-password\n");
exit(1);
}
work_with_user = true;
break;
case 's':
permutation = true;
break;
case 'w':
if(wordlistfile)
fprintf(stderr, "Wordlist already set\n");
else
wordlistfile = strdup(optarg);
break;
case 'v':
printf("pdfcrack version %d.%d\n", VERSION_MAJOR, VERSION_MINOR);
return 0;
default:
printHelp(argv[0]);
ret = 1;
goto out3;
}
}
/** If there are any unhandled arguments and the filename and/or wordlist is
not set: try to match the first as the filename and the second as
wordlist.
*/
{
int i = optind;
if(i > 0) {
if(i < argc && !inputfile)
inputfile = strdup(argv[i++]);
if(i < argc && !wordlistfile)
wordlistfile = strdup(argv[i++]);
if(i < argc)
while(i<argc) {
fprintf(stderr,"Non-option argument %s\n", argv[i++]);
}
}
}
if(!inputfile || minpw < 0 || maxpw < 0) {
printHelp(argv[0]);
ret = 1;
goto out3;
}
if((file = fopen(inputfile, "r")) == 0) {
fprintf(stderr,"Error: file %s not found\n", inputfile);
ret = 2;
goto out3;
}
e = calloc(1,sizeof(EncData));
if(recovery) {
if(wordlistfile) {
free(wordlistfile);
wordlistfile = NULL;
}
if(!loadState(file, e, &wordlistfile, &work_with_user)) {
fprintf(stderr, "Error: Not a savefile or savefile is damaged\n");
ret = 3;
goto out1;
}
if(!quiet)
printf("Loaded state for %s\n", inputfile);
}
else { /** !recovery */
if(!openPDF(file,e)) {
fprintf(stderr, "Error: Not a valid PDF\n");
ret = 3;
goto out1;
}
ret = getEncryptedInfo(file, e);
if(ret) {
if(ret == EENCNF)
fprintf(stderr, "Error: Could not extract encryption information\n");
else if(ret == ETRANF || ret == ETRENF || ret == ETRINF)
fprintf(stderr, "Error: Encryption not detected (is the document password protected?)\n");
ret = 4;
goto out1;
}
else if(e->revision < 2 || (strcmp(e->s_handler,"Standard") != 0)) {
fprintf(stderr, "The specific version is not supported (%s - %d)\n", e->s_handler, e->revision);
ret = 5;
goto out1;
}
}
if(fclose(file)) {
fprintf(stderr, "Error: closing file %s\n", inputfile);
}
if(minpw > maxpw) {
fprintf(stderr, "Warning: minimum pw-length bigger than max\n");
}
if(wordlistfile) {
if((wordlist = fopen(wordlistfile, "r")) == 0) {
fprintf(stderr,"Error: file %s not found\n", wordlistfile);
ret = 6;
goto out2;
}
}
act2.sa_handler = autoSave;
sigfillset(&act2.sa_mask);
act2.sa_flags = 0;
sigaction(SIGINT, &act2, 0);
if(!quiet) {
printEncData(e);
act1.sa_handler = alarmInterrupt;
sigemptyset(&act1.sa_mask);
act1.sa_flags = 0;
sigaction(SIGALRM, &act1, 0);
alarm(PRINTERVAL);
}
/** Try to initialize the cracking-engine */
if(!initPDFCrack(e, userpassword, work_with_user, wordlistfile,
wordlistfile?Wordlist:Generative, wordlist, charset,
(unsigned int)minpw, (unsigned int)maxpw, permutation)) {
cleanPDFCrack();
fprintf(stderr, "Wrong userpassword, '%s'\n", userpassword);
ret = 7;
goto out2;
}
/** Do the actual crunching */
runCrack();
/** cleanup */
cleanPDFCrack();
freeEncData(e);
if(wordlistfile) {
fclose(wordlist);
free(wordlistfile);
}
if(inputfile)
free(inputfile);
if(charset)
free(charset);
if(userpassword)
free(userpassword);
return 0;
out1:
if(fclose(file))
fprintf(stderr, "Error: closing file %s\n", inputfile);
out2:
freeEncData(e);
out3:
if(inputfile)
free(inputfile);
if(charset)
free(charset);
if(userpassword)
free(userpassword);
exit(ret);
}
