static int do_update_record(int argc, char **argv)
{
u8 buf[240];
size_t buflen;
int r, i, err = 1;
int rec, offs;
sc_path_t path;
sc_file_t *file;
if (argc != 4)
return usage(do_update_record);
if (arg_to_path(argv[0], &path, 0) != 0)
return usage(do_update_record);
rec = strtol(argv[1],NULL,10);
offs = strtol(argv[2],NULL,10);
printf("in: %i; %i; %s\n", rec, offs, argv[3]);
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select file", current_file);
return -1;
}
if (file->ef_structure != SC_FILE_EF_LINEAR_VARIABLE) {
printf("EF structure should be SC_FILE_EF_LINEAR_VARIABLE\n");
goto err;
} else if (rec < 1 || rec > file->record_count) {
printf("Invalid record number %i\n", rec);
goto err;
}
r = sc_read_record(card, rec, buf, sizeof(buf), SC_RECORD_BY_REC_NR);
if (r<0) {
printf("Cannot read record %i; return %i\n", rec, r);
goto err;;
}
buflen = sizeof(buf) - offs;
i = parse_string_or_hexdata(argv[3], buf + offs, &buflen);
if (!i) {
printf("unable to parse data\n");
goto err;
}
r = sc_update_record(card, rec, buf, r, SC_RECORD_BY_REC_NR);
if (r<0) {
printf("Cannot update record %i; return %i\n", rec, r);
goto err;
}
printf("Total of %d bytes written to record %i at %i offset.\n",
i, rec, offs);
err = 0;
err:
sc_file_free(file);
select_current_path_or_die();
return -err;
}
static int do_put(int argc, char **argv)
{
u8 buf[256];
int r, err = 1;
size_t count = 0;
unsigned int idx = 0;
sc_path_t path;
sc_file_t *file = NULL;
const char *filename;
FILE *outf = NULL;
if (argc < 1 || argc > 2)
return usage(do_put);
if (arg_to_path(argv[0], &path, 0) != 0)
return usage(do_put);
filename = (argc == 2) ? argv[1] : path_to_filename(&path, '_');
outf = fopen(filename, "rb");
if (outf == NULL) {
perror(filename);
goto err;
}
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select file", current_file);
goto err;
}
count = file->size;
while (count) {
int c = count > sizeof(buf) ? sizeof(buf) : count;
r = fread(buf, 1, c, outf);
if (r < 0) {
perror("fread");
goto err;
}
if (r != c)
count = c = r;
r = sc_update_binary(card, idx, buf, c, 0);
if (r < 0) {
check_ret(r, SC_AC_OP_READ, "update failed", file);
goto err;
}
if (r != c) {
printf("expecting %d, wrote only %d bytes.\n", c, r);
goto err;
}
idx += c;
count -= c;
}
printf("Total of %d bytes written.\n", idx);
err = 0;
err:
sc_file_free(file);
if (outf)
fclose(outf);
select_current_path_or_die();
return -err;
}
static int do_update_binary(int argc, char **argv)
{
u8 buf[240];
int r, err = 1, in_len;
int offs;
sc_path_t path;
sc_file_t *file;
char *in_str;
if (argc < 2 || argc > 3)
goto usage;
if (arg_to_path(argv[0], &path, 0) != 0)
goto usage;
offs = strtol(argv[1],NULL,10);
in_str = argv[2];
printf("in: %i; %s\n", offs, in_str);
if (*in_str=='\"') {
in_len = strlen(in_str)-2 >= sizeof(buf) ? sizeof(buf)-1 : strlen(in_str)-2;
strncpy((char *) buf, in_str+1, in_len);
} else {
in_len = hex2binary(buf, sizeof(buf), in_str);
if (!in_len) {
printf("unable to parse hex value\n");
return -1;
}
}
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select file", current_file);
return -1;
}
if (file->ef_structure != SC_FILE_EF_TRANSPARENT) {
printf("EF structure should be SC_FILE_EF_TRANSPARENT\n");
goto err;
}
r = sc_update_binary(card, offs, buf, in_len, 0);
if (r < 0) {
printf("Cannot update %04X; return %i\n", file->id, r);
goto err;
}
printf("Total of %d bytes written to %04X at %i offset.\n",
r, file->id, offs);
err = 0;
err:
sc_file_free(file);
select_current_path_or_die();
return -err;
usage:
printf("Usage: update <file id> offs <hex value> | <'\"' enclosed string>\n");
return -1;
}
static int do_ls(int argc, char **argv)
{
u8 buf[256], *cur = buf;
int r, count;
r = sc_list_files(card, buf, sizeof(buf));
if (r < 0) {
check_ret(r, SC_AC_OP_LIST_FILES, "unable to receive file listing", current_file);
return -1;
}
count = r;
printf("FileID\tType Size\n");
while (count >= 2) {
sc_path_t path;
sc_file_t *file = NULL;
char filename[10];
int i = 0;
int matches = 0;
/* construct file name */
sprintf(filename, "%02X%02X", cur[0], cur[1]);
/* compare file name against patterns */
for (i = 0; i < argc; i++) {
if (pattern_match(argv[i], filename)) {
matches = 1;
break;
}
}
/* if any filename pattern were given, filter only matching file names */
if (argc == 0 || matches) {
if (current_path.type != SC_PATH_TYPE_DF_NAME) {
path = current_path;
sc_append_path_id(&path, cur, 2);
} else {
if (sc_path_set(&path, SC_PATH_TYPE_FILE_ID, cur, 2, 0, 0) != SC_SUCCESS) {
printf("unable to set path.\n");
die(1);
}
}
r = sc_select_file(card, &path, &file);
if (r) {
printf(" %02X%02X unable to select file, %s\n", cur[0], cur[1], sc_strerror(r));
} else {
file->id = (cur[0] << 8) | cur[1];
print_file(file);
sc_file_free(file);
}
}
cur += 2;
count -= 2;
select_current_path_or_die();
}
return 0;
}
static int do_cd(int argc, char **argv)
{
sc_path_t path;
sc_file_t *file;
int r;
if (argc != 1)
goto usage;
if (strcmp(argv[0], "..") == 0) {
path = current_path;
if (path.len < 4) {
printf("unable to go up, already in MF.\n");
return -1;
}
if (path.type == SC_PATH_TYPE_DF_NAME) {
sc_format_path("3F00", &path);
}
else {
path.len -= 2;
}
r = sc_select_file(card, &path, &file);
if (r) {
printf("unable to go up: %s\n", sc_strerror(r));
return -1;
}
if (current_file)
sc_file_free(current_file);
current_file = file;
current_path = path;
return 0;
}
if (arg_to_path(argv[0], &path, 0) != 0)
goto usage;
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select DF", current_file);
return -1;
}
if ((file->type != SC_FILE_TYPE_DF) && (card->type != SC_CARD_TYPE_BELPIC_EID)) {
printf("Error: file is not a DF.\n");
sc_file_free(file);
select_current_path_or_die();
return -1;
}
current_path = path;
if (current_file)
sc_file_free(current_file);
current_file = file;
return 0;
usage:
puts("Usage: cd <file_id>|aid:<DF name>");
return -1;
}
static int create_file(sc_file_t *file)
{
int r;
r = sc_create_file(card, file);
if (r) {
check_ret(r, SC_AC_OP_CREATE, "CREATE FILE failed", current_file);
return -1;
}
/* Make sure we're back in the parent directory, because on some cards
* CREATE FILE also selects the newly created file. */
select_current_path_or_die();
return 0;
}
static int do_update_binary(int argc, char **argv)
{
u8 buf[240];
size_t buflen = sizeof(buf);
int r, err = 1;
int offs;
sc_path_t path;
sc_file_t *file;
if (argc != 3)
return usage(do_update_binary);
if (arg_to_path(argv[0], &path, 0) != 0)
return usage(do_update_binary);
offs = strtol(argv[1],NULL,10);
printf("in: %i; %s\n", offs, argv[2]);
r = parse_string_or_hexdata(argv[2], buf, &buflen);
if (r < 0) {
printf("unable to parse data\n");
return -1;
}
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select file", current_file);
return -1;
}
if (file->ef_structure != SC_FILE_EF_TRANSPARENT) {
printf("EF structure should be SC_FILE_EF_TRANSPARENT\n");
goto err;
}
r = sc_update_binary(card, offs, buf, buflen, 0);
if (r < 0) {
printf("Cannot update %04X; return %i\n", file->id, r);
goto err;
}
printf("Total of %d bytes written to %04X at %i offset.\n",
r, file->id, offs);
err = 0;
err:
sc_file_free(file);
select_current_path_or_die();
return -err;
}
static int do_ls(int argc, char **argv)
{
u8 buf[256], *cur = buf;
int r, count;
if (argc)
goto usage;
r = sc_list_files(card, buf, sizeof(buf));
if (r < 0) {
check_ret(r, SC_AC_OP_LIST_FILES, "unable to receive file listing", current_file);
return -1;
}
count = r;
printf("FileID\tType Size\n");
while (count >= 2) {
sc_path_t path;
sc_file_t *file = NULL;
if (current_path.type != SC_PATH_TYPE_DF_NAME) {
path = current_path;
sc_append_path_id(&path, cur, 2);
} else {
if (sc_path_set(&path, SC_PATH_TYPE_FILE_ID, cur, 2, 0, 0) != SC_SUCCESS) {
printf("unable to set path.\n");
die(1);
}
}
r = sc_select_file(card, &path, &file);
if (r) {
printf(" %02X%02X unable to select file, %s\n", cur[0], cur[1], sc_strerror(r));
} else {
file->id = (cur[0] << 8) | cur[1];
print_file(file);
sc_file_free(file);
}
cur += 2;
count -= 2;
select_current_path_or_die();
}
return 0;
usage:
puts("Usage: ls");
return -1;
}
static int do_get(int argc, char **argv)
{
u8 buf[256];
int r, err = 1;
size_t count = 0;
unsigned int idx = 0;
sc_path_t path;
sc_file_t *file = NULL;
char *filename;
FILE *outf = NULL;
if (argc < 1 || argc > 2)
return usage(do_get);
if (arg_to_path(argv[0], &path, 0) != 0)
return usage(do_get);
filename = (argc == 2) ? argv[1] : path_to_filename(&path, '_');
outf = (strcmp(filename, "-") == 0)
? stdout
: fopen(filename, "wb");
if (outf == NULL) {
perror(filename);
goto err;
}
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select file", current_file);
goto err;
}
if (file->type != SC_FILE_TYPE_WORKING_EF) {
printf("only working EFs may be read\n");
goto err;
}
count = file->size;
while (count) {
int c = count > sizeof(buf) ? sizeof(buf) : count;
r = sc_read_binary(card, idx, buf, c, 0);
if (r < 0) {
check_ret(r, SC_AC_OP_READ, "read failed", file);
goto err;
}
if ((r != c) && (card->type != SC_CARD_TYPE_BELPIC_EID)) {
printf("expecting %d, got only %d bytes.\n", c, r);
goto err;
}
if ((r == 0) && (card->type == SC_CARD_TYPE_BELPIC_EID))
break;
fwrite(buf, r, 1, outf);
idx += r;
count -= r;
}
if (outf == stdout) {
fwrite("\n", 1, 1, outf);
}
else {
printf("Total of %d bytes read from %s and saved to %s.\n",
idx, argv[0], filename);
}
err = 0;
err:
if (file)
sc_file_free(file);
if (outf != NULL && outf != stdout)
fclose(outf);
select_current_path_or_die();
return -err;
}
static int do_info(int argc, char **argv)
{
sc_file_t *file;
sc_path_t path;
size_t i;
const char *st;
int r, not_current = 1;
const id2str_t *ac_ops = NULL;
if (!argc) {
path = current_path;
file = current_file;
not_current = 0;
} else if (argc == 1) {
if (arg_to_path(argv[0], &path, 0) != 0)
return usage(do_info);
r = sc_select_file(card, &path, &file);
if (r) {
printf("unable to select file: %s\n", sc_strerror(r));
return -1;
}
} else
return usage(do_info);
switch (file->type) {
case SC_FILE_TYPE_WORKING_EF:
case SC_FILE_TYPE_INTERNAL_EF:
st = "Elementary File";
break;
case SC_FILE_TYPE_DF:
st = "Dedicated File";
break;
default:
st = "Unknown File";
break;
}
printf("\n%s ID %04X\n\n", st, file->id);
printf("%-15s%s\n", "File path:", path_to_filename(&path, '/'));
printf("%-15s%lu bytes\n", "File size:", (unsigned long) file->size);
if (file->type == SC_FILE_TYPE_DF) {
static const id2str_t ac_ops_df[] = {
{ SC_AC_OP_SELECT, "SELECT" },
{ SC_AC_OP_LOCK, "LOCK" },
{ SC_AC_OP_DELETE, "DELETE" },
{ SC_AC_OP_CREATE, "CREATE" },
{ SC_AC_OP_REHABILITATE, "REHABILITATE" },
{ SC_AC_OP_INVALIDATE, "INVALIDATE" },
{ SC_AC_OP_LIST_FILES, "LIST FILES" },
{ SC_AC_OP_CRYPTO, "CRYPTO" },
{ SC_AC_OP_DELETE_SELF, "DELETE SELF" },
{ 0, NULL }
};
if (file->namelen) {
printf("%-15s", "DF name:");
util_print_binary(stdout, file->name, file->namelen);
printf("\n");
}
ac_ops = ac_ops_df;
} else {
static const id2str_t ac_ops_ef[] = {
{ SC_AC_OP_READ, "READ" },
{ SC_AC_OP_UPDATE, "UPDATE" },
{ SC_AC_OP_DELETE, "DELETE" },
{ SC_AC_OP_WRITE, "WRITE" },
{ SC_AC_OP_REHABILITATE, "REHABILITATE" },
{ SC_AC_OP_INVALIDATE, "INVALIDATE" },
{ SC_AC_OP_LIST_FILES, "LIST FILES" },
{ SC_AC_OP_CRYPTO, "CRYPTO" },
{ 0, NULL }
};
const id2str_t ef_type_name[] = {
{ SC_FILE_EF_TRANSPARENT, "Transparent" },
{ SC_FILE_EF_LINEAR_FIXED, "Linear fixed" },
{ SC_FILE_EF_LINEAR_FIXED_TLV, "Linear fixed, SIMPLE-TLV" },
{ SC_FILE_EF_LINEAR_VARIABLE, "Linear variable" },
{ SC_FILE_EF_LINEAR_VARIABLE_TLV, "Linear variable, SIMPLE-TLV" },
{ SC_FILE_EF_CYCLIC, "Cyclic" },
{ SC_FILE_EF_CYCLIC_TLV, "Cyclic, SIMPLE-TLV" },
{ 0, NULL }
};
const char *ef_type = "Unknown";
for (i = 0; ef_type_name[i].str != NULL; i++)
if (file->ef_structure == ef_type_name[i].id)
ef_type = ef_type_name[i].str;
printf("%-15s%s\n", "EF structure:", ef_type);
ac_ops = ac_ops_ef;
}
for (i = 0; ac_ops != NULL && ac_ops[i].str != NULL; i++) {
int len = strlen(ac_ops[i].str);
printf("ACL for %s:%*s %s\n",
ac_ops[i].str,
(12 > len) ? (12 - len) : 0, "",
util_acl_to_str(sc_file_get_acl_entry(file, ac_ops[i].id)));
}
if (file->prop_attr_len) {
printf("%-25s", "Proprietary attributes:");
util_hex_dump(stdout, file->prop_attr, file->prop_attr_len, " ");
printf("\n");
}
if (file->sec_attr_len) {
printf("%-25s", "Security attributes:");
util_hex_dump(stdout, file->sec_attr, file->sec_attr_len, " ");
printf("\n");
}
printf("\n");
if (not_current) {
sc_file_free(file);
select_current_path_or_die();
}
return 0;
}
static int do_cat(int argc, char **argv)
{
int r, err = 1;
sc_path_t path;
sc_file_t *file = NULL;
int not_current = 1;
int sfi = 0;
if (argc > 1)
return usage(do_cat);
if (!argc) {
path = current_path;
file = current_file;
not_current = 0;
} else {
const char sfi_prefix[] = "sfi:";
if (strncasecmp(argv[0], sfi_prefix, strlen(sfi_prefix)) == 0) {
const char *sfi_n = argv[0] + strlen(sfi_prefix);
if(!current_file) {
printf("A DF must be selected to read by SFI\n");
goto err;
}
path = current_path;
file = current_file;
not_current = 0;
sfi = atoi(sfi_n);
if ((sfi < 1) || (sfi > 30)) {
printf("Invalid SFI: %s\n", sfi_n);
return usage(do_cat);
}
} else {
if (arg_to_path(argv[0], &path, 0) != 0)
return usage(do_cat);
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select file",
current_file);
goto err;
}
}
}
if (file->type != SC_FILE_TYPE_WORKING_EF &&
!(file->type == SC_FILE_TYPE_DF && sfi)) {
printf("only working EFs may be read\n");
goto err;
}
if (file->ef_structure == SC_FILE_EF_TRANSPARENT && !sfi)
read_and_util_print_binary_file(file);
else
read_and_print_record_file(file, sfi);
err = 0;
err:
if (not_current) {
if (file != NULL)
sc_file_free(file);
select_current_path_or_die();
}
return -err;
}
static int do_asn1(int argc, char **argv)
{
int r, err = 1;
sc_path_t path;
sc_file_t *file = NULL;
int not_current = 1;
size_t len;
unsigned char *buf = NULL;
if (argc > 1)
return usage(do_asn1);
/* select file */
if (argc) {
if (arg_to_path(argv[0], &path, 0) != 0) {
puts("Invalid file path");
return -1;
}
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select file", current_file);
goto err;
}
} else {
path = current_path;
file = current_file;
not_current = 0;
}
if (file->type != SC_FILE_TYPE_WORKING_EF) {
printf("only working EFs may be read\n");
goto err;
}
/* read */
if (file->ef_structure != SC_FILE_EF_TRANSPARENT) {
printf("only transparent file type is supported at the moment\n");
goto err;
}
len = file->size;
buf = calloc(1, len);
if (!buf) {
goto err;
}
r = sc_read_binary(card, 0, buf, len, 0);
if (r < 0) {
check_ret(r, SC_AC_OP_READ, "read failed", file);
goto err;
}
if ((size_t)r != len) {
printf("expecting %lu, got only %d bytes.\n", (unsigned long) len, r);
goto err;
}
/* asn1 dump */
sc_asn1_print_tags(buf, len);
err = 0;
err:
if (buf)
free(buf);
if (not_current) {
if (file)
sc_file_free(file);
select_current_path_or_die();
}
return -err;
}
static int do_find(int argc, char **argv)
{
u8 fid[2], end[2];
sc_path_t path;
int r;
fid[0] = 0;
fid[1] = 0;
end[0] = 0xFF;
end[1] = 0xFF;
switch (argc) {
case 2:
if (arg_to_fid(argv[1], end) != 0)
return usage(do_find);
/* fall through */
case 1:
if (arg_to_fid(argv[0], fid) != 0)
return usage(do_find);
/* fall through */
case 0:
break;
default:
return usage(do_find);
}
printf("FileID\tType Size\n");
while (1) {
sc_file_t *file = NULL;
printf("(%02X%02X)\r", fid[0], fid[1]);
fflush(stdout);
if (current_path.type != SC_PATH_TYPE_DF_NAME) {
path = current_path;
sc_append_path_id(&path, fid, sizeof fid);
} else {
if (sc_path_set(&path, SC_PATH_TYPE_FILE_ID, fid, 2, 0, 0) != SC_SUCCESS) {
printf("unable to set path.\n");
die(1);
}
}
r = sc_select_file(card, &path, &file);
switch (r) {
case SC_SUCCESS:
file->id = (fid[0] << 8) | fid[1];
print_file(file);
sc_file_free(file);
select_current_path_or_die();
break;
case SC_ERROR_NOT_ALLOWED:
case SC_ERROR_SECURITY_STATUS_NOT_SATISFIED:
printf("(%02X%02X)\t%s\n", fid[0], fid[1], sc_strerror(r));
break;
}
if (fid[0] == end[0] && fid[1] == end[1])
break;
fid[1] = fid[1] + 1;
if (fid[1] == 0)
fid[0] = fid[0] + 1;
}
return 0;
}
static int do_info(int argc, char **argv)
{
sc_file_t *file;
sc_path_t path;
size_t i;
const char *st;
int r, not_current = 1;
if (!argc) {
path = current_path;
file = current_file;
not_current = 0;
} else if (argc == 1) {
if (arg_to_path(argv[0], &path, 0) != 0)
goto usage;
r = sc_select_file(card, &path, &file);
if (r) {
printf("unable to select file: %s\n", sc_strerror(r));
return -1;
}
} else
goto usage;
switch (file->type) {
case SC_FILE_TYPE_WORKING_EF:
case SC_FILE_TYPE_INTERNAL_EF:
st = "Elementary File";
break;
case SC_FILE_TYPE_DF:
st = "Dedicated File";
break;
default:
st = "Unknown File";
break;
}
printf("\n%s ID %04X\n\n", st, file->id);
printf("%-15s", "File path:");
for (i = 0; i < path.len; i++) {
for (i = 0; i < path.len; i++) {
if ((i & 1) == 0 && i)
printf("/");
printf("%02X", path.value[i]);
}
}
printf("\n%-15s%lu bytes\n", "File size:", (unsigned long) file->size);
if (file->type == SC_FILE_TYPE_DF) {
const char *ops[] = {
"SELECT", "LOCK", "DELETE", "CREATE", "REHABILITATE",
"INVALIDATE", "LIST FILES", "CRYPTO", "DELETE SELF"
};
if (file->namelen) {
printf("%-15s", "DF name:");
util_print_binary(stdout, file->name, file->namelen);
printf("\n");
}
for (i = 0; i < sizeof(ops)/sizeof(ops[0]); i++) {
char buf[80];
sprintf(buf, "ACL for %s:", ops[i]);
printf("%-25s%s\n", buf, util_acl_to_str(sc_file_get_acl_entry(file, i)));
}
} else {
const char *structs[] = {
"Unknown", "Transparent", "Linear fixed",
"Linear fixed, SIMPLE-TLV", "Linear variable",
"Linear variable TLV", "Cyclic, SIMPLE-TLV",
};
const struct {
const char * label;
int op;
} ops[] = {
{ "READ", SC_AC_OP_READ },
{ "UPDATE", SC_AC_OP_UPDATE },
{ "DELETE", SC_AC_OP_DELETE },
{ "WRITE", SC_AC_OP_WRITE },
{ "REHABILITATE", SC_AC_OP_REHABILITATE },
{ "INVALIDATE", SC_AC_OP_INVALIDATE },
{ "LIST_FILES", SC_AC_OP_LIST_FILES },
{ "CRYPTO", SC_AC_OP_CRYPTO },
};
printf("%-15s%s\n", "EF structure:", structs[file->ef_structure]);
for (i = 0; i < sizeof(ops)/sizeof(ops[0]); i++) {
char buf[80];
sprintf(buf, "ACL for %s:", ops[i].label);
printf("%-25s%s\n", buf, util_acl_to_str(sc_file_get_acl_entry(file, ops[i].op)));
}
}
if (file->prop_attr_len) {
printf("%-25s", "Proprietary attributes:");
for (i = 0; i < file->prop_attr_len; i++)
printf("%02X ", file->prop_attr[i]);
printf("\n");
}
if (file->sec_attr_len) {
printf("%-25s", "Security attributes:");
for (i = 0; i < file->sec_attr_len; i++)
printf("%02X ", file->sec_attr[i]);
printf("\n");
}
printf("\n");
if (not_current) {
sc_file_free(file);
select_current_path_or_die();
}
return 0;
usage:
puts("Usage: info [file_id]");
return -1;
}
static int do_update_record(int argc, char **argv)
{
u8 buf[240];
int r, i, err = 1;
int rec, offs;
sc_path_t path;
sc_file_t *file;
char *in_str;
if (argc < 3 || argc > 4)
goto usage;
if (arg_to_path(argv[0], &path, 0) != 0)
goto usage;
rec = strtol(argv[1],NULL,10);
offs = strtol(argv[2],NULL,10);
in_str = argv[3];
printf("in: %i; %i; %s\n", rec, offs, in_str);
r = sc_select_file(card, &path, &file);
if (r) {
check_ret(r, SC_AC_OP_SELECT, "unable to select file", current_file);
return -1;
}
if (file->ef_structure != SC_FILE_EF_LINEAR_VARIABLE) {
printf("EF structure should be SC_FILE_EF_LINEAR_VARIABLE\n");
goto err;
} else if (rec < 1 || rec > file->record_count) {
printf("Invalid record number %i\n", rec);
goto err;
}
r = sc_read_record(card, rec, buf, sizeof(buf), SC_RECORD_BY_REC_NR);
if (r<0) {
printf("Cannot read record %i; return %i\n", rec, r);
goto err;;
}
i = hex2binary(buf + offs, sizeof(buf) - offs, in_str);
if (!i) {
printf("unable to parse hex value\n");
goto err;
}
r = sc_update_record(card, rec, buf, r, SC_RECORD_BY_REC_NR);
if (r<0) {
printf("Cannot update record %i; return %i\n", rec, r);
goto err;
}
printf("Total of %d bytes written to record %i at %i offset.\n",
i, rec, offs);
err = 0;
err:
sc_file_free(file);
select_current_path_or_die();
return -err;
usage:
printf("Usage: update_record <file id> rec_nr rec_offs <hex value>\n");
return -1;
}
