/usr/include/dovecot/mbox-from.h is in dovecot-dev 1:2.2.9-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | #ifndef MBOX_FROM_H
#define MBOX_FROM_H
/* Parse time and sender from mbox-compatible From_-line. msg points to the
data after "From ". */
int mbox_from_parse(const unsigned char *msg, size_t size,
time_t *time_r, int *tz_offset_r, char **sender_r);
/* Return a mbox-compatible From_-line using given sender and time.
The returned string begins with "From ". */
const char *mbox_from_create(const char *sender, time_t timestamp);
#endif
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