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{
if (field->fld_type==wanted_fld_type) {
return field;
}
}
}
return NULL;
}
struct mailimf_optional_field* mailimf_find_optional_field(struct mailimf_fields* header, const char* wanted_fld_name)
{
/* Note: the function does not return fields with no value set! */
if (header==NULL || header->fld_list==NULL) {
return NULL;
}
for (clistiter* cur1 = clist_begin(header->fld_list); cur1!=NULL ; cur1=clist_next(cur1))
{
struct mailimf_field* field = (struct mailimf_field*)clist_content(cur1);
if (field && field->fld_type==MAILIMF_FIELD_OPTIONAL_FIELD)
{
struct mailimf_optional_field* optional_field = field->fld_data.fld_optional_field;
if (optional_field && optional_field->fld_name && optional_field->fld_value && strcasecmp(optional_field->fld_name, wanted_fld_name)==0) {
return optional_field;
}
}
}
return NULL;
}
static int mailmime_is_attachment_disposition(struct mailmime* mime)
{
if (mime->mm_mime_fields!=NULL) {
for (clistiter* cur = clist_begin(mime->mm_mime_fields->fld_list); cur!=NULL; cur = clist_next(cur)) {
struct mailmime_field* field = (struct mailmime_field*)clist_content(cur);
if (field && field->fld_type==MAILMIME_FIELD_DISPOSITION && field->fld_data.fld_disposition) {
if (field->fld_data.fld_disposition->dsp_type
&& field->fld_data.fld_disposition->dsp_type->dsp_type==MAILMIME_DISPOSITION_TYPE_ATTACHMENT)
{
return 1;
}
}
}
}
return 0;
}
static void reconcat_mime(char** raw_mime, const char* type, const char* subtype)
{
if (raw_mime) {
*raw_mime = dc_mprintf("%s/%s",
type? type : "application",
subtype? subtype : "octet-stream");
}
}
static int mailmime_get_mime_type(struct mailmime* mime, int* msg_type,
char** raw_mime /*set only for discrete types with attachments*/)
{
#define DC_MIMETYPE_MP_ALTERNATIVE 10
#define DC_MIMETYPE_MP_RELATED 20
#define DC_MIMETYPE_MP_MIXED 30
#define DC_MIMETYPE_MP_NOT_DECRYPTABLE 40
#define DC_MIMETYPE_MP_REPORT 45
#define DC_MIMETYPE_MP_SIGNED 46
#define DC_MIMETYPE_MP_OTHER 50
#define DC_MIMETYPE_TEXT_PLAIN 60
#define DC_MIMETYPE_TEXT_HTML 70
#define DC_MIMETYPE_IMAGE 80
#define DC_MIMETYPE_AUDIO 90
#define DC_MIMETYPE_VIDEO 100
#define DC_MIMETYPE_FILE 110
#define DC_MIMETYPE_AC_SETUP_FILE 111
struct mailmime_content* c = mime->mm_content_type;
int dummy = 0; if (msg_type==NULL) { msg_type = &dummy; }
*msg_type = 0;
if (c==NULL || c->ct_type==NULL) {
return 0;
}
switch (c->ct_type->tp_type)
{
case MAILMIME_TYPE_DISCRETE_TYPE:
switch (c->ct_type->tp_data.tp_discrete_type->dt_type)
{
case MAILMIME_DISCRETE_TYPE_TEXT:
if (mailmime_is_attachment_disposition(mime)) {
; /* DC_MIMETYPE_FILE is returned below - we leave text attachments as attachments as they may be too large to display as a normal message, eg. complete books. */
}
else if (strcmp(c->ct_subtype, "plain")==0) {
*msg_type = DC_MSG_TEXT;
return DC_MIMETYPE_TEXT_PLAIN;