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aandvalenzuela
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RRTcodebaseC

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int vg_expect_encrypted = 1;
if (join_vg) {
int is_verified_group = 0;
dc_get_chat_id_by_grpid(context, grpid, NULL, &is_verified_group);
if (!is_verified_group) {
// when joining a normal group after verification,
// the vg-member-added message may be unencrypted
// when not all group members have keys or prefer encryption.
// this does not affect the contact verification as such.
vg_expect_encrypted = 0;
}
}
if (vg_expect_encrypted) {
if (!encrypted_and_signed(mimeparser, scanned_fingerprint_of_alice)) {
could_not_establish_secure_connection(context, contact_chat_id, "Contact confirm message not encrypted.");
end_bobs_joining(context, DC_BOB_ERROR);
goto cleanup;
}
}
if (!mark_peer_as_verified(context, scanned_fingerprint_of_alice)) {
could_not_establish_secure_connection(context, contact_chat_id, "Fingerprint mismatch on joiner-side."); // MitM? - key has changed since vc-auth-required message
goto cleanup;
}
dc_scaleup_contact_origin(context, contact_id, DC_ORIGIN_SECUREJOIN_JOINED);
context->cb(context, DC_EVENT_CONTACTS_CHANGED, 0/*no select event*/, 0);
if (join_vg) {
if (!dc_addr_equals_self(context, lookup_field(mimeparser, "Chat-Group-Member-Added"))) {
dc_log_info(context, 0, "Message belongs to a different handshake (scaled up contact anyway to allow creation of group).");
goto cleanup;
}
}
secure_connection_established(context, contact_chat_id);
context->bob_expects = 0;
if (join_vg) {
send_handshake_msg(context, contact_chat_id, "vg-member-added-received",
NULL, NULL, NULL); // Bob -> Alice
}
end_bobs_joining(context, DC_BOB_SUCCESS);
}
else if (strcmp(step, "vg-member-added-received")==0)
{
/* ============================================================
==== Alice - the inviter side ====
==== Step 8 in "Out-of-band verified groups" protocol ====
============================================================ */
if (NULL==(contact=dc_get_contact(context, contact_id)) || !dc_contact_is_verified(contact)) {
dc_log_warning(context, 0, "vg-member-added-received invalid.");
goto cleanup;
}
context->cb(context, DC_EVENT_SECUREJOIN_INVITER_PROGRESS, contact_id, 800);
context->cb(context, DC_EVENT_SECUREJOIN_INVITER_PROGRESS, contact_id, 1000); // done group joining
}
// for errors, we do not the corresponding message at all,
// it may come eg. from another device or may be useful to find out what was going wrong.
if (ret & DC_HANDSHAKE_STOP_NORMAL_PROCESSING) {
ret |= DC_HANDSHAKE_ADD_DELETE_JOB;
}
cleanup:
UNLOCK_QR
dc_contact_unref(contact);
free(scanned_fingerprint_of_alice);
free(auth);
free(own_fingerprint);
free(grpid);
return ret;
}
/**
* @}
*/
```
Filename: dc_smtp.c
```c
#include <unistd.h>
#include <libetpan/libetpan.h>
#include "dc_context.h"
#include "dc_smtp.h"
#include "dc_job.h"
#include "dc_oauth2.h"
#ifndef DEBUG_SMTP
#define DEBUG_SMTP 0
#endif