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refclock: check all driver options

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In each driver provide a list of supported options and abort when an
unknown option is specified in the refclock directive.
This commit is contained in:
Miroslav Lichvar
2019-04-18 15:56:15 +02:00
parent 34e9dd13ce
commit a78031ce0d
6 changed files with 58 additions and 14 deletions
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60
refclock.c
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@@ -325,25 +325,57 @@ RCL_GetDriverParameter(RCL_Instance instance)
return instance->driver_parameter;
}
static char *
get_next_driver_option(RCL_Instance instance, char *option)
{
if (option == NULL)
option = instance->driver_parameter;
option += strlen(option) + 1;
if (option >= instance->driver_parameter + instance->driver_parameter_length)
return NULL;
return option;
}
void
RCL_CheckDriverOptions(RCL_Instance instance, const char **options)
{
char *option;
int i, len;
for (option = get_next_driver_option(instance, NULL);
option;
option = get_next_driver_option(instance, option)) {
for (i = 0; options && options[i]; i++) {
len = strlen(options[i]);
if (!strncmp(options[i], option, strlen(options[i])) &&
(option[len] == '=' || option[len] == '\0'))
break;
}
if (!options || !options[i])
LOG_FATAL("Invalid refclock driver option %s", option);
}
}
char *
RCL_GetDriverOption(RCL_Instance instance, char *name)
{
char *s, *e;
int n;
char *option;
int len;
s = instance->driver_parameter;
e = s + instance->driver_parameter_length;
n = strlen(name);
len = strlen(name);
while (1) {
s += strlen(s) + 1;
if (s >= e)
break;
if (!strncmp(name, s, n)) {
if (s[n] == '=')
return s + n + 1;
if (s[n] == '\0')
return s + n;
for (option = get_next_driver_option(instance, NULL);
option;
option = get_next_driver_option(instance, option)) {
if (!strncmp(name, option, len)) {
if (option[len] == '=')
return option + len + 1;
if (option[len] == '\0')
return option + len;
}
}