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BUG/MINOR: tools: make parse_time_err() more strict on the timer validity

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First, an error is now reported if the first character is not a digit. Thus,
"timeout client s" triggers an error now. Then 'u' is also rejected
now. 'us' is valid and should be used set the timer in microseconds. However
'u' alone is not a valid unit. It was just ignored before (default to
milliseconds). Now, it is an error. Finally, a warning is reported if the
end of the text is not reached after the timer parsing. This warning will
probably be switched to an error in a futur version.

This patch must be backported to all stable versions.
This commit is contained in:
Christopher Faulet 2020-12-11 09:23:07 +01:00
parent cad5f5e1ed
commit c20ad0d8db
1 changed files with 12 additions and 2 deletions
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14
src/tools.c
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@ -2216,6 +2216,10 @@ const char *parse_time_err(const char *text, unsigned *ret, unsigned unit_flags)
unsigned long long imult, idiv;
unsigned long long omult, odiv;
unsigned long long value, result;
const char *str = text;
if (!isdigit((unsigned char)*text))
return text;
omult = odiv = 1;
@ -2246,7 +2250,7 @@ const char *parse_time_err(const char *text, unsigned *ret, unsigned unit_flags)
switch (*text) {
case '\0': /* no unit = default unit */
imult = omult = idiv = odiv = 1;
break;
goto end;
case 's': /* second = unscaled unit */
break;
case 'u': /* microsecond : "us" */
@ -2254,7 +2258,7 @@ const char *parse_time_err(const char *text, unsigned *ret, unsigned unit_flags)
idiv = 1000000;
text++;
}
break;
return text;
case 'm': /* millisecond : "ms" or minute: "m" */
if (text[1] == 's') {
idiv = 1000;
@ -2272,7 +2276,13 @@ const char *parse_time_err(const char *text, unsigned *ret, unsigned unit_flags)
return text;
break;
}
if (*(++text) != '\0') {
ha_warning("unexpected character '%c' after the timer value '%s', only "
"(us=microseconds,ms=milliseconds,s=seconds,m=minutes,h=hours,d=days) are supported."
" This will be reported as an error in next versions.\n", *text, str);
}
end:
if (omult % idiv == 0) { omult /= idiv; idiv = 1; }
if (idiv % omult == 0) { idiv /= omult; omult = 1; }
if (imult % odiv == 0) { imult /= odiv; odiv = 1; }