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if ((optional_field=dc_mimeparser_lookup_optional_field(mime_parser, "Chat-Predecessor"))!=NULL)
{
if (is_known_rfc724_mid(context, optional_field->fld_value)) {
return 1;
}
}
struct mailimf_field* field = NULL;
if ((field=dc_mimeparser_lookup_field(mime_parser, "In-Reply-To"))!=NULL
&& field->fld_type==MAILIMF_FIELD_IN_REPLY_TO)
{
struct mailimf_in_reply_to* fld_in_reply_to = field->fld_data.fld_in_reply_to;
if (fld_in_reply_to) {
if (is_known_rfc724_mid_in_list(context, field->fld_data.fld_in_reply_to->mid_list)) {
return 1;
}
}
}
if ((field=dc_mimeparser_lookup_field(mime_parser, "References"))!=NULL
&& field->fld_type==MAILIMF_FIELD_REFERENCES)
{
struct mailimf_references* fld_references = field->fld_data.fld_references;
if (fld_references) {
if (is_known_rfc724_mid_in_list(context, field->fld_data.fld_references->mid_list)) {
return 1;
}
}
}
return 0;
}
/*******************************************************************************
* Check if a message is a reply to any messenger message
******************************************************************************/
static int is_msgrmsg_rfc724_mid(dc_context_t* context, const char* rfc724_mid)
{
int is_msgrmsg = 0;
if (rfc724_mid) {
sqlite3_stmt* stmt = dc_sqlite3_prepare(context->sql,
"SELECT id FROM msgs "
" WHERE rfc724_mid=? "
" AND msgrmsg!=0 "
" AND chat_id>" DC_STRINGIFY(DC_CHAT_ID_LAST_SPECIAL) ";");
sqlite3_bind_text(stmt, 1, rfc724_mid, -1, SQLITE_STATIC);
if (sqlite3_step(stmt)==SQLITE_ROW) {
is_msgrmsg = 1;
}
sqlite3_finalize(stmt);
}
return is_msgrmsg;
}
static int is_msgrmsg_rfc724_mid_in_list(dc_context_t* context, const clist* mid_list)
{
if (mid_list) {
for (clistiter* cur = clist_begin(mid_list); cur!=NULL ; cur=clist_next(cur)) {
if (is_msgrmsg_rfc724_mid(context, clist_content(cur))) {
return 1;
}
}
}
return 0;
}
static int dc_is_reply_to_messenger_message(dc_context_t* context, dc_mimeparser_t* mime_parser)
{
/* function checks, if the message defined by mime_parser references a message send by us from Delta Chat.
This is similar to is_reply_to_known_message() but
- checks also if any of the referenced IDs are send by a messenger
- it is okay, if the referenced messages are moved to trash here
- no check for the Chat-* headers (function is only called if it is no messenger message itself) */
struct mailimf_field* field = NULL;
if ((field=dc_mimeparser_lookup_field(mime_parser, "In-Reply-To"))!=NULL
&& field->fld_type==MAILIMF_FIELD_IN_REPLY_TO)
{
struct mailimf_in_reply_to* fld_in_reply_to = field->fld_data.fld_in_reply_to;
if (fld_in_reply_to) {
if (is_msgrmsg_rfc724_mid_in_list(context, field->fld_data.fld_in_reply_to->mid_list)) {
return 1;
}
}
}
if ((field=dc_mimeparser_lookup_field(mime_parser, "References"))!=NULL
&& field->fld_type==MAILIMF_FIELD_REFERENCES)
{
struct mailimf_references* fld_references = field->fld_data.fld_references;
if (fld_references) {
if (is_msgrmsg_rfc724_mid_in_list(context, field->fld_data.fld_references->mid_list)) {
return 1;
}