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Make set-option functions distinguish between bad keys and bad values, in case the caller cares

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svn:r2707
This commit is contained in:
Nick Mathewson 2004-11-07 22:59:30 +00:00
parent c514a06663
commit f9c85c4d1c
1 changed files with 17 additions and 12 deletions
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29
src/or/config.c
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@ -335,7 +335,8 @@ static config_var_t *config_find_option(const char *key)
}
/** If <b>c</b> is a syntactically valid configuration line, update
* <b>options</b> with its value and return 0. Otherwise return -1.
* <b>options</b> with its value and return 0. Otherwise return -1 for bad key,
* -2 for bad value.
*
* If 'reset' is set, and we get a line containing no value, restore the
* option to its default value.
@ -371,7 +372,7 @@ config_assign_line(or_options_t *options, struct config_line_t *c, int reset)
if (!ok) {
log(LOG_WARN, "Int keyword '%s %s' is malformed or out of bounds.",
c->key,c->value);
return -1;
return -2;
}
*(int *)lvalue = i;
break;
@ -380,7 +381,7 @@ config_assign_line(or_options_t *options, struct config_line_t *c, int reset)
i = tor_parse_long(c->value, 10, 0, 1, &ok, NULL);
if (!ok) {
log(LOG_WARN, "Boolean keyword '%s' expects 0 or 1.", c->key);
return -1;
return -2;
}
*(int *)lvalue = i;
break;
@ -416,7 +417,7 @@ config_assign_line(or_options_t *options, struct config_line_t *c, int reset)
break;
case CONFIG_TYPE_LINELIST_V:
log_fn(LOG_WARN, "Can't provide value for virtual option '%s'", c->key);
return -1;
return -2;
default:
tor_assert(0);
break;
@ -516,7 +517,8 @@ config_get_assigned_option(or_options_t *options, const char *key)
*
* If <b>reset</b>, then interpret empty lines as meaning "restore to
* default value", and interpret LINELIST* options as replacing (not
* extending) their previous values.
* extending) their previous values. Return 0 on success, -1 on bad key,
* -2 on bad value.
*/
static int
config_assign(or_options_t *options, struct config_line_t *list, int reset)
@ -541,8 +543,9 @@ config_assign(or_options_t *options, struct config_line_t *list, int reset)
/* pass 3: assign. */
while (list) {
if (config_assign_line(options, list, reset))
return -1;
int r;
if ((r=config_assign_line(options, list, reset)))
return r;
list = list->next;
}
return 0;
@ -551,26 +554,28 @@ config_assign(or_options_t *options, struct config_line_t *list, int reset)
/** Try assigning <b>list</b> to <b>options</b>. You do this by duping
* options, assigning list to the new one, then validating it. If it's
* ok, then through out the old one and stick with the new one. Else,
* revert to old and return failure.
* revert to old and return failure. Return 0 on success, -1 on bad
* keys, -2 on bad values, -3 on bad transition.
*/
int
config_trial_assign(or_options_t **options, struct config_line_t *list, int reset)
{
int r;
or_options_t *trial_options = options_dup(*options);
if (config_assign(trial_options, list, reset) < 0) {
if ((r=config_assign(trial_options, list, reset)) < 0) {
options_free(trial_options);
return -1;
return r;
}
if (options_validate(trial_options) < 0) {
options_free(trial_options);
return -1;
return -2;
}
if (options_transition_allowed(*options, trial_options) < 0) {
options_free(trial_options);
return -1;
return -3;
}
/* XXX now act on options */