mirrors/bird
mirrors/bird
0
0
Fork 0
mirror of https://gitlab.nic.cz/labs/bird.git synced 2024-12-22 09:41:54 +00:00
Code Releases Activity

Lib: Fix handling of buffers in timestamp formatting

Browse Source 
The code in tm_format_real_time() mixed up two buffers and their
sizes, which may cause crash in MRT dumping code.

Thanks to Piotr Wydrych for the bugreport.
This commit is contained in:
Ondrej Zajicek (work) 2021-04-12 17:01:31 +02:00
parent a2277975d7
commit 9c41e1ca3e
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/timer.c
View File

@ -365,8 +365,9 @@ tm_format_real_time(char *x, size_t max, const char *fmt, btime t)
if (!localtime_r(&ts, &tm)) if (!localtime_r(&ts, &tm))
return 0; return 0;
byte tbuf[TM_DATETIME_BUFFER_SIZE]; size_t tbuf_size = MIN(max, 4096);
if (!strfusec(tbuf, max, fmt, t2)) byte *tbuf = alloca(tbuf_size);
if (!strfusec(tbuf, tbuf_size, fmt, t2))
return 0; return 0;
if (!strftime(x, max, tbuf, &tm)) if (!strftime(x, max, tbuf, &tm))