diff options
| author | Alban Gruin | 2021-09-20 10:08:54 +0200 |
|---|---|---|
| committer | Alban Gruin | 2021-09-20 10:08:54 +0200 |
| commit | 00cd66b16956a75a1c8dfb1f267b9a26603c09c7 (patch) | |
| tree | 52dfe555af7de269518fcaed07420200bd04f7d2 | |
| parent | 9522c817654c435f1929f4a37961780346406cf7 (diff) | |
ics, ucs: generate event IDs with a random number
Until now, ucs generated unique IDs with the datetime and the number of
an event, starting by 0. Unfortunately, if two calendars were generated
at the same second, they could have collisions. To avoid that, the ICS
generator now uses a base ID generated randomly, which should be enough
to avoid collisions. The RNG is self-initialised in the main function.
Signed-off-by: Alban Gruin <alban at pa1ch dot fr>
| -rw-r--r-- | src/ics.ml | 4 | ||||
| -rw-r--r-- | src/ucs.ml | 3 |
2 files changed, 5 insertions, 2 deletions
@@ -19,6 +19,8 @@ open CalendarLib module StringSet = Set.Make (String) +let rng_bound = int_of_float (2. ** 30.) - 1 + let to_date = Printer.Calendar.sprint "%Y%m%dT%H%M%S" let current_date () = to_date @@ Calendar.now () @@ -101,5 +103,5 @@ let to_string tz events = VERSION:2.0\r\n\ PRODID:-//ucs//\r\n" ^ vtimezone - ^ gen_events 0 "" events + ^ gen_events (Random.int rng_bound) "" events ^ "END:VCALENDAR\r\n" @@ -1,5 +1,5 @@ (* - * Copyright (C) 2020 Alban Gruin + * Copyright (C) 2020, 2021 Alban Gruin * * ucs is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published @@ -67,4 +67,5 @@ let () = Term.(const run $ base_url $ celcat_url $ port $ socket), Term.info "ucs" ~version:(Version.version ()) ~doc ~exits in CalendarLib.Time_Zone.(change Local); + Random.self_init (); Term.(exit @@ eval cmd) |