diff options
| -rw-r--r-- | src/resolv/async_resolv.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/resolv/async_resolv.c b/src/resolv/async_resolv.c index 9400021f..934fa954 100644 --- a/src/resolv/async_resolv.c +++ b/src/resolv/async_resolv.c @@ -627,6 +627,98 @@ fail: return NULL; } +/* =================== Resolve host name in files =========================*/ +struct gethostbyname_files_state { + struct resolv_ctx *resolv_ctx; + + /* Part of the query. */ + const char *name; + int family; + + /* query result */ + struct resolv_hostent *rhostent; + + /* returned by ares. */ + int status; +}; + +/* Fake up an async interface even though files would + * always be blocking */ +static struct tevent_req * +resolv_gethostbyname_files_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct resolv_ctx *ctx, + const char *name, + int family) +{ + struct tevent_req *req; + struct gethostbyname_files_state *state; + struct hostent *hostent = NULL; + + req = tevent_req_create(mem_ctx, &state, + struct gethostbyname_files_state); + if (req == NULL) { + tevent_req_error(req, ENOMEM); + goto done; + } + + state->resolv_ctx = ctx; + state->name = name; + state->rhostent = NULL; + state->family = family; + + DEBUG(4, ("Trying to resolve %s record of '%s' in files\n", + state->family == AF_INET ? "A" : "AAAA", state->name)); + + state->status = ares_gethostbyname_file(state->resolv_ctx->channel, + state->name, state->family, + &hostent); + + if (state->status == ARES_SUCCESS) { + state->rhostent = resolv_copy_hostent2(state, hostent); + if (state->rhostent == NULL) { + tevent_req_error(req, ENOMEM); + goto done; + } + } else if (state->status == ARES_ENOTFOUND || + state->status == ARES_ENODATA) { + /* Just say we didn't find anything and let the caller decide + * about retrying */ + tevent_req_error(req, ENOENT); + goto done; + } else { + tevent_req_error(req, return_code(state->status)); + goto done; + } + + tevent_req_done(req); +done: + if (hostent) ares_free_hostent(hostent); + tevent_req_post(req, ev); + return req; +} + +static errno_t +resolv_gethostbyname_files_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx, + int *status, struct resolv_hostent **rhostent) +{ + struct gethostbyname_files_state *state = tevent_req_data(req, + struct gethostbyname_files_state); + + /* Fill in even in case of error as status contains the + * c-ares return code */ + if (status) { + *status = state->status; + } + if (rhostent) { + *rhostent = talloc_steal(mem_ctx, state->rhostent); + } + + TEVENT_REQ_RETURN_ON_ERROR(req); + + return EOK; +} + /******************************************************************* * Get host by name. * *******************************************************************/ |