diff options
Diffstat (limited to 'src/or/protover.c')
| -rw-r--r-- | src/or/protover.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/or/protover.c b/src/or/protover.c index 7feec0c5c7..ca03a71acd 100644 --- a/src/or/protover.c +++ b/src/or/protover.c @@ -235,6 +235,28 @@ protover_is_supported_here(protocol_type_t pr, uint32_t ver) return protocol_list_contains(ours, pr, ver); } +/** + * Return true iff "list" encodes a protocol list that includes support for + * the indicated protocol and version. + */ +int +protocol_list_supports_protocol(const char *list, protocol_type_t tp, + uint32_t version) +{ + /* NOTE: This is a pretty inefficient implementation. If it ever shows + * up in profiles, we should memoize it. + */ + smartlist_t *protocols = parse_protocol_list(list); + if (!protocols) { + return 0; + } + int contains = protocol_list_contains(protocols, tp, version); + + SMARTLIST_FOREACH(protocols, proto_entry_t *, ent, proto_entry_free(ent)); + smartlist_free(protocols); + return contains; +} + /** Return the canonical string containing the list of protocols * that we support. */ const char * |