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RRTcodebaseC

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cleanup:
free(self_addr);
dc_key_unref(self_key);
return fingerprint;
}
static uint32_t chat_id_2_contact_id(dc_context_t* context, uint32_t contact_chat_id)
{
uint32_t contact_id = 0;
dc_array_t* contacts = dc_get_chat_contacts(context, contact_chat_id);
if (dc_array_get_cnt(contacts)!=1) {
goto cleanup;
}
contact_id = dc_array_get_id(contacts, 0);
cleanup:
dc_array_unref(contacts);
return contact_id;
}
static int fingerprint_equals_sender(dc_context_t* context, const char* fingerprint, uint32_t contact_chat_id)
{
int fingerprint_equal = 0;
dc_array_t* contacts = dc_get_chat_contacts(context, contact_chat_id);
dc_contact_t* contact = dc_contact_new(context);
dc_apeerstate_t* peerstate = dc_apeerstate_new(context);
char* fingerprint_normalized = NULL;
if (dc_array_get_cnt(contacts)!=1) {
goto cleanup;
}
if (!dc_contact_load_from_db(contact, context->sql, dc_array_get_id(contacts, 0))
|| !dc_apeerstate_load_by_addr(peerstate, context->sql, contact->addr)) {
goto cleanup;
}
fingerprint_normalized = dc_normalize_fingerprint(fingerprint);
if (strcasecmp(fingerprint_normalized, peerstate->public_key_fingerprint)==0) {
fingerprint_equal = 1;
}
cleanup:
free(fingerprint_normalized);
dc_contact_unref(contact);
dc_array_unref(contacts);
return fingerprint_equal;
}
static int mark_peer_as_verified(dc_context_t* context, const char* fingerprint)
{
int success = 0;
dc_apeerstate_t* peerstate = dc_apeerstate_new(context);
if (!dc_apeerstate_load_by_fingerprint(peerstate, context->sql, fingerprint)) {
goto cleanup;
}
if (!dc_apeerstate_set_verified(peerstate, DC_PS_PUBLIC_KEY, fingerprint, DC_BIDIRECT_VERIFIED)) {
goto cleanup;
}
// set MUTUAL as an out-of-band-verification is a strong hint that encryption is wanted.
// the state may be corrected by the Autocrypt headers as usual later;
// maybe it is a good idea to add the prefer-encrypt-state to the QR code.
peerstate->prefer_encrypt = DC_PE_MUTUAL;
peerstate->to_save |= DC_SAVE_ALL;
dc_apeerstate_save_to_db(peerstate, context->sql, 0);
success = 1;
cleanup:
dc_apeerstate_unref(peerstate);
return success;
}
static const char* lookup_field(dc_mimeparser_t* mimeparser, const char* key)
{
const char* value = NULL;
struct mailimf_field* field = dc_mimeparser_lookup_field(mimeparser, key);
if (field==NULL || field->fld_type!=MAILIMF_FIELD_OPTIONAL_FIELD
|| field->fld_data.fld_optional_field==NULL || (value=field->fld_data.fld_optional_field->fld_value)==NULL) {
return NULL;
}
return value;
}
static void send_handshake_msg(dc_context_t* context, uint32_t contact_chat_id, const char* step, const char* param2, const char* fingerprint, const char* grpid)
{
dc_msg_t* msg = dc_msg_new_untyped(context);
msg->type = DC_MSG_TEXT;