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nscd: does not warn about invalid values what parsing config file

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PR:		202135
Submitted by:	amutu@amutu.com
Reported By:	Trond.Endrestol@ximalas.info
Reviewed by:	markj, freqlabs
MFC after:	4 weeks
Sponsored by:	Klara Inc.
Event:		July 2020 Bugathon
Differential Revision:	https://reviews.freebsd.org/D25627
This commit is contained in:
Allan Jude 2020-07-11 19:44:12 +00:00
parent d046aae254
commit 86e88c4f54
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363109
1 changed files with 36 additions and 3 deletions
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39
usr.sbin/nscd/parser.c
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@ -375,6 +375,7 @@ parse_config_file(struct configuration *config,
char *fields[128];
int field_count, line_num, value;
int res;
int invalid_value;
TRACE_IN(parse_config_file);
assert(config != NULL);
@ -388,6 +389,7 @@ parse_config_file(struct configuration *config,
res = 0;
line_num = 0;
invalid_value = 0;
memset(buffer, 0, sizeof(buffer));
while ((res == 0) && (fgets(buffer, sizeof(buffer) - 1, fin) != NULL)) {
field_count = strbreak(buffer, fields, sizeof(fields));
@ -421,12 +423,20 @@ parse_config_file(struct configuration *config,
(strcmp(fields[0], "positive-time-to-live") == 0) &&
(check_cachename(fields[1]) == 0) &&
((value = get_number(fields[2], 0, -1)) != -1)) {
if (value <= 0) {
invalid_value = 1;
break;
}
set_positive_time_to_live(config,
fields[1], value);
continue;
} else if ((field_count == 3) &&
(strcmp(fields[0], "positive-confidence-threshold") == 0) &&
((value = get_number(fields[2], 1, -1)) != -1)) {
if (value <= 0) {
invalid_value = 1;
break;
}
set_positive_confidence_threshold(config,
fields[1], value);
continue;
@ -450,12 +460,20 @@ parse_config_file(struct configuration *config,
(strcmp(fields[0], "negative-time-to-live") == 0) &&
(check_cachename(fields[1]) == 0) &&
((value = get_number(fields[2], 0, -1)) != -1)) {
if (value <= 0) {
invalid_value = 1;
break;
}
set_negative_time_to_live(config,
fields[1], value);
continue;
} else if ((field_count == 3) &&
(strcmp(fields[0], "negative-confidence-threshold") == 0) &&
((value = get_number(fields[2], 1, -1)) != -1)) {
if (value <= 0) {
invalid_value = 1;
break;
}
set_negative_confidence_threshold(config,
fields[1], value);
continue;
@ -473,6 +491,10 @@ parse_config_file(struct configuration *config,
(strcmp(fields[0], "suggested-size") == 0) &&
(check_cachename(fields[1]) == 0) &&
((value = get_number(fields[2], 1, -1)) != -1)) {
if (value <= 0) {
invalid_value = 1;
break;
}
set_suggested_size(config, fields[1], value);
continue;
}
@ -490,6 +512,10 @@ parse_config_file(struct configuration *config,
(strcmp(fields[0], "keep-hot-count") == 0) &&
(check_cachename(fields[1]) == 0) &&
((value = get_number(fields[2], 0, -1)) != -1)) {
if (value < 0) {
invalid_value = 1;
break;
}
set_keep_hot_count(config,
fields[1], value);
continue;
@ -509,9 +535,16 @@ parse_config_file(struct configuration *config,
break;
}
LOG_ERR_2("config file parser", "error in file "
"%s on line %d", fname, line_num);
*error_str = "syntax error";
if (invalid_value != 0) {
LOG_ERR_2("Invalid value for parameter",
"error in file %s on line %d",
fname, line_num);
*error_str = "invalid value";
} else {
LOG_ERR_2("config file parser", "error in file "
"%s on line %d", fname, line_num);
*error_str = "syntax error";
}
*error_line = line_num;
res = -1;
}