/* Message envelope */
static int
message_envelope_date (mu_envelope_t envelope, char *buf, size_t len,
size_t *pnwrite)
{
mu_message_t msg = mu_envelope_get_owner (envelope);
time_t t;
size_t n;
if (msg == NULL)
return EINVAL;
/* FIXME: extract the time from "Date:". */
if (buf == NULL || len == 0)
{
n = MU_DATETIME_FROM_LENGTH;
}
else
{
char tmpbuf[MU_DATETIME_FROM_LENGTH+1];
t = time (NULL);
n = mu_strftime (tmpbuf, sizeof tmpbuf,
MU_DATETIME_FROM, gmtime (&t));
n = mu_cpystr (buf, tmpbuf, len);
}
if (pnwrite)
*pnwrite = n;
return 0;
}
static int
message_envelope_sender (mu_envelope_t envelope, char *buf, size_t len,
size_t *pnwrite)
{
mu_message_t msg = mu_envelope_get_owner (envelope);
mu_header_t header;
int status;
const char *sender;
struct mu_auth_data *auth = NULL;
static char *hdrnames[] = {
"X-Envelope-Sender",
"X-Envelope-From",
"X-Original-Sender",
"From",
NULL
};
mu_address_t address = NULL;
if (msg == NULL)
return EINVAL;
/* First, try the header */
status = mu_message_get_header (msg, &header);
if (status)
return status;
status = mu_header_sget_firstof (header, hdrnames, &sender, NULL);
if (status)
{
auth = mu_get_auth_by_uid (getuid ());
if (!auth)
return MU_ERR_NOENT;
sender = auth->name;
}
status = mu_address_create (&address, sender);
if (status == 0)
{
status = mu_address_sget_email (address, 1, &sender);
if (status == 0)
{
size_t n = strlen (sender);
if (buf && len > 0)
{
len--; /* One for the null. */
n = (n < len) ? n : len;
memcpy (buf, sender, n);
buf[n] = '\0';
}
if (pnwrite)
*pnwrite = n;
}
mu_address_destroy (&address);
}
if (auth)
mu_auth_data_free (auth);
return status;
}
static int
mbox_envelope_sender (mu_envelope_t envelope, char *buf, size_t len,
size_t *pnwrite)
{
mu_message_t msg = mu_envelope_get_owner (envelope);
mbox_message_t mum = mu_message_get_owner (msg);
size_t n = 0;
int status;
char buffer[512];
char *s;
if (mum == NULL)
return EINVAL;
status = mu_stream_readline (mum->mud->mailbox->stream, buffer,
sizeof(buffer),
mum->header_from, &n);
if (status != 0)
{
if (pnwrite)
*pnwrite = 0;
return status;
}
/* Format: "From [sender] [date]" */
/* strlen ("From ") == 5 */
if (n > 5 && (s = strchr (buffer + 5, ' ')) != NULL)
{
/* Put a NULL to isolate the sender string, make a C string. */
*s = '\0';
if (buf && len > 0)
{
len--; /* leave space for the null */
strncpy (buf, buffer + 5, len)[len] = '\0';
len = strlen (buf);
}
else
len = strlen (buffer + 5);
}
else
len = 0;
if (pnwrite)
*pnwrite = len;
return 0;
}