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simutil: SIM applications directory decoding utils

This commit is contained in:
Andrzej Zaborowski 2011-01-19 09:07:54 +01:00 committed by Denis Kenzior
parent 0ef557e766
commit 1542bf0c59
2 changed files with 65 additions and 0 deletions
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57
src/simutil.c
View File

@ -1465,3 +1465,60 @@ gboolean sim_sst_is_active(unsigned char *efsst, unsigned char len,
return (efsst[index / 4] >> (((index % 4) * 2) + 1)) & 1;
}
GSList *sim_parse_app_template_entries(const unsigned char *buffer, int len)
{
GSList *ret = NULL;
const unsigned char *dataobj;
int dataobj_len;
/* Find all the application entries */
while ((dataobj = ber_tlv_find_by_tag(buffer, 0x61, len,
&dataobj_len)) != NULL) {
struct sim_app_record app;
const unsigned char *aid, *label;
int label_len;
/* Find the aid (mandatory) */
aid = ber_tlv_find_by_tag(dataobj, 0x4f, dataobj_len,
&app.aid_len);
if (!aid || app.aid_len < 0x01 || app.aid_len > 0x10)
goto error;
memcpy(app.aid, aid, app.aid_len);
/* Find the label (optional) */
label = ber_tlv_find_by_tag(dataobj, 0x50, dataobj_len,
&label_len);
if (label) {
/*
* Label field uses the extra complicated
* encoding in 102.221 Annex A
*/
app.label = sim_string_to_utf8(label, label_len);
if (app.label == NULL)
goto error;
} else
app.label = NULL;
ret = g_slist_prepend(ret, g_memdup(&app, sizeof(app)));
len -= (dataobj - buffer) + dataobj_len;
buffer = dataobj + dataobj_len;
}
return ret;
error:
while (ret) {
GSList *t = ret;
g_free(((struct sim_app_record *) ret->data)->label);
ret = ret->next;
g_slist_free_1(t);
}
return NULL;
}

8
src/simutil.h
View File

@ -255,6 +255,12 @@ struct sim_ef_info {
enum sim_file_access perm_update;
};
struct sim_app_record {
unsigned char aid[16];
int aid_len;
char *label;
};
struct simple_tlv_iter {
unsigned int max;
unsigned int pos;
@ -446,3 +452,5 @@ gboolean sim_sst_is_available(unsigned char *service_sst, unsigned char len,
enum sim_sst_service index);
gboolean sim_sst_is_active(unsigned char *service_sst, unsigned char len,
enum sim_sst_service index);
GSList *sim_parse_app_template_entries(const unsigned char *buffer, int len);