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Merge pull request #17649 from yuwata/resolve-dnssd-template-name

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resolve: ignore invalid service template name
This commit is contained in:
Lennart Poettering 2020-11-20 14:56:59 +01:00 committed by GitHub
commit eebd1c3ad2
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1 changed files with 26 additions and 14 deletions
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40
src/resolve/resolved-conf.c
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@ -217,11 +217,22 @@ int config_parse_search_domains(
return 0;
}
int config_parse_dnssd_service_name(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) {
int config_parse_dnssd_service_name(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
static const Specifier specifier_table[] = {
{ 'm', specifier_machine_id, NULL },
{ 'b', specifier_boot_id, NULL },
{ 'H', specifier_host_name, NULL },
{ 'H', specifier_host_name, NULL }, /* We will use specifier_dnssd_host_name(). */
{ 'v', specifier_kernel_release, NULL },
{ 'a', specifier_architecture, NULL },
{ 'o', specifier_os_id, NULL },
@ -240,24 +251,25 @@ int config_parse_dnssd_service_name(const char *unit, const char *filename, unsi
assert(s);
if (isempty(rvalue)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Service instance name can't be empty. Ignoring.");
return -EINVAL;
s->name_template = mfree(s->name_template);
return 0;
}
r = free_and_strdup(&s->name_template, rvalue);
if (r < 0)
return log_oom();
r = specifier_printf(s->name_template, specifier_table, NULL, &name);
if (r < 0)
return log_debug_errno(r, "Failed to replace specifiers: %m");
r = specifier_printf(rvalue, specifier_table, NULL, &name);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid service instance name template '%s', ignoring assignment: %m", rvalue);
return 0;
}
if (!dns_service_name_is_valid(name)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Service instance name template renders to invalid name '%s'. Ignoring.", name);
return -EINVAL;
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Service instance name template '%s' renders to invalid name '%s'. Ignoring assignment.",
rvalue, name);
return 0;
}
return 0;
return free_and_strdup_warn(&s->name_template, rvalue);
}
int config_parse_dnssd_service_type(