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RRTcodebaseC

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struct mailimf_field* field = (struct mailimf_field*)clist_content(cur);
if (field) {
if (field->fld_type==MAILIMF_FIELD_SUBJECT) {
move_to_encrypted = 1;
}
else if (field->fld_type==MAILIMF_FIELD_OPTIONAL_FIELD) {
struct mailimf_optional_field* opt_field = field->fld_data.fld_optional_field;
if (opt_field && opt_field->fld_name) {
if ( strncmp(opt_field->fld_name, "Secure-Join", 11)==0
|| (strncmp(opt_field->fld_name, "Chat-", 5)==0 && strcmp(opt_field->fld_name, "Chat-Version")!=0)/*Chat-Version may be used for filtering and is not added to the encrypted part, however, this is subject to change*/) {
move_to_encrypted = 1;
}
}
}
}
if (move_to_encrypted) {
mailimf_fields_add(imffields_encrypted, field);
cur = clist_delete(imffields_unprotected->fld_list, cur);
}
else {
cur = clist_next(cur);
}
}
struct mailimf_subject* subject = mailimf_subject_new(dc_strdup("..."));
mailimf_fields_add(imffields_unprotected, mailimf_field_new(MAILIMF_FIELD_SUBJECT, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, subject, NULL, NULL, NULL));
clist_append(part_to_encrypt->mm_content_type->ct_parameters, mailmime_param_new_with_data("protected-headers", "v1"));
/* convert part to encrypt to plain text */
mailmime_write_mem(plain, &col, message_to_encrypt);
if (plain->str==NULL || plain->len<=0) {
goto cleanup;
}
//char* t1=dc_null_terminate(plain->str,plain->len);printf("PLAIN:\n%s\n",t1);free(t1); // DEBUG OUTPUT
if (!dc_pgp_pk_encrypt(context, plain->str, plain->len, keyring, sign_key, 1/*use_armor*/, (void**)&ctext, &ctext_bytes)) {
goto cleanup;
}
helper->cdata_to_free = ctext;
//char* t2=dc_null_terminate(ctext,ctext_bytes);printf("ENCRYPTED:\n%s\n",t2);free(t2); // DEBUG OUTPUT
/* create MIME-structure that will contain the encrypted text */
struct mailmime* encrypted_part = new_data_part(NULL, 0, "multipart/encrypted", -1);
struct mailmime_content* content = encrypted_part->mm_content_type;
clist_append(content->ct_parameters, mailmime_param_new_with_data("protocol", "application/pgp-encrypted"));
static char version_content[] = "Version: 1\r\n";
struct mailmime* version_mime = new_data_part(version_content, strlen(version_content), "application/pgp-encrypted", MAILMIME_MECHANISM_7BIT);
mailmime_smart_add_part(encrypted_part, version_mime);
struct mailmime* ctext_part = new_data_part(ctext, ctext_bytes, "application/octet-stream", MAILMIME_MECHANISM_7BIT);
mailmime_smart_add_part(encrypted_part, ctext_part);
/* replace the original MIME-structure by the encrypted MIME-structure */
in_out_message->mm_data.mm_message.mm_msg_mime = encrypted_part;
encrypted_part->mm_parent = in_out_message;
mailmime_free(message_to_encrypt);
//MMAPString* t3=mmap_string_new("");mailmime_write_mem(t3,&col,in_out_message);char* t4=dc_null_terminate(t3->str,t3->len); printf("ENCRYPTED+MIME_ENCODED:\n%s\n",t4);free(t4);mmap_string_free(t3); // DEBUG OUTPUT
helper->encryption_successfull = 1;
}
char* p = dc_aheader_render(autocryptheader);
if (p==NULL) {
goto cleanup;
}
mailimf_fields_add(imffields_unprotected, mailimf_field_new_custom(strdup("Autocrypt"), p/*takes ownership of pointer*/));
cleanup:
dc_aheader_unref(autocryptheader);
dc_keyring_unref(keyring);
dc_key_unref(sign_key);
if (plain) { mmap_string_free(plain); }
for (int i=dc_array_get_cnt(peerstates)-1; i>=0; i--) { dc_apeerstate_unref((dc_apeerstate_t*)dc_array_get_ptr(peerstates, i)); }
dc_array_unref(peerstates);
}
void dc_e2ee_thanks(dc_e2ee_helper_t* helper)
{
if (helper==NULL) {
return;
}
free(helper->cdata_to_free);
helper->cdata_to_free = NULL;
if (helper->gossipped_addr)
{
dc_hash_clear(helper->gossipped_addr);
free(helper->gossipped_addr);
helper->gossipped_addr = NULL;
}
if (helper->signatures)