diff options
| -rw-r--r-- | src/libsystemd/sd-resolve/sd-resolve.c | 178 | ||||
| -rw-r--r-- | src/libsystemd/sd-resolve/test-resolve.c | 63 | ||||
| -rw-r--r-- | src/systemd/sd-resolve.h | 13 |
3 files changed, 3 insertions, 251 deletions
diff --git a/src/libsystemd/sd-resolve/sd-resolve.c b/src/libsystemd/sd-resolve/sd-resolve.c index b0dc822591..888b372c99 100644 --- a/src/libsystemd/sd-resolve/sd-resolve.c +++ b/src/libsystemd/sd-resolve/sd-resolve.c @@ -48,9 +48,6 @@ typedef enum { RESPONSE_ADDRINFO, REQUEST_NAMEINFO, RESPONSE_NAMEINFO, - REQUEST_RES_QUERY, - REQUEST_RES_SEARCH, - RESPONSE_RES, REQUEST_TERMINATE, RESPONSE_DIED } QueryType; @@ -104,12 +101,10 @@ struct sd_resolve_query { int _h_errno; struct addrinfo *addrinfo; char *serv, *host; - unsigned char *answer; union { sd_resolve_getaddrinfo_handler_t getaddrinfo_handler; sd_resolve_getnameinfo_handler_t getnameinfo_handler; - sd_resolve_res_handler_t res_handler; }; void *userdata; @@ -166,33 +161,16 @@ typedef struct NameInfoResponse { int _h_errno; } NameInfoResponse; -typedef struct ResRequest { - struct RHeader header; - int class; - int type; - size_t dname_len; -} ResRequest; - -typedef struct ResResponse { - struct RHeader header; - int ret; - int _errno; - int _h_errno; -} ResResponse; - typedef union Packet { RHeader rheader; AddrInfoRequest addrinfo_request; AddrInfoResponse addrinfo_response; NameInfoRequest nameinfo_request; NameInfoResponse nameinfo_response; - ResRequest res_request; - ResResponse res_response; } Packet; static int getaddrinfo_done(sd_resolve_query* q); static int getnameinfo_done(sd_resolve_query *q); -static int res_query_done(sd_resolve_query* q); static void resolve_query_disconnect(sd_resolve_query *q); @@ -343,38 +321,6 @@ static int send_nameinfo_reply( return 0; } -static int send_res_reply(int out_fd, unsigned id, const unsigned char *answer, int ret, int _errno, int _h_errno) { - - ResResponse resp = { - .header.type = RESPONSE_RES, - .header.id = id, - .ret = ret, - ._errno = _errno, - ._h_errno = _h_errno, - }; - - struct msghdr mh = {}; - struct iovec iov[2]; - size_t l; - - assert(out_fd >= 0); - - l = ret > 0 ? (size_t) ret : 0; - - resp.header.length = sizeof(ResResponse) + l; - - iov[0] = (struct iovec) { .iov_base = &resp, .iov_len = sizeof(ResResponse) }; - iov[1] = (struct iovec) { .iov_base = (void*) answer, .iov_len = l }; - - mh.msg_iov = iov; - mh.msg_iovlen = ELEMENTSOF(iov); - - if (sendmsg(out_fd, &mh, MSG_NOSIGNAL) < 0) - return -errno; - - return 0; -} - static int handle_request(int out_fd, const Packet *packet, size_t length) { const RHeader *req; @@ -437,29 +383,6 @@ static int handle_request(int out_fd, const Packet *packet, size_t length) { errno, h_errno); } - case REQUEST_RES_QUERY: - case REQUEST_RES_SEARCH: { - const ResRequest *res_req = &packet->res_request; - union { - HEADER header; - uint8_t space[BUFSIZE]; - } answer; - const char *dname; - int ret; - - assert(length >= sizeof(ResRequest)); - assert(length == sizeof(ResRequest) + res_req->dname_len); - - dname = (const char *) res_req + sizeof(ResRequest); - - if (req->type == REQUEST_RES_QUERY) - ret = res_query(dname, res_req->class, res_req->type, (unsigned char *) &answer, BUFSIZE); - else - ret = res_search(dname, res_req->class, res_req->type, (unsigned char *) &answer, BUFSIZE); - - return send_res_reply(out_fd, req->id, (unsigned char *) &answer, ret, errno, h_errno); - } - case REQUEST_TERMINATE: /* Quit */ return -ECONNRESET; @@ -752,11 +675,6 @@ static int complete_query(sd_resolve *resolve, sd_resolve_query *q) { r = getnameinfo_done(q); break; - case REQUEST_RES_QUERY: - case REQUEST_RES_SEARCH: - r = res_query_done(q); - break; - default: assert_not_reached("Cannot complete unknown query type"); } @@ -923,28 +841,6 @@ static int handle_response(sd_resolve *resolve, const Packet *packet, size_t len return complete_query(resolve, q); } - case RESPONSE_RES: { - const ResResponse *res_resp = &packet->res_response; - - assert(length >= sizeof(ResResponse)); - assert(q->type == REQUEST_RES_QUERY || q->type == REQUEST_RES_SEARCH); - - q->ret = res_resp->ret; - q->_errno = res_resp->_errno; - q->_h_errno = res_resp->_h_errno; - - if (res_resp->ret >= 0) { - q->answer = memdup((const char *)resp + sizeof(ResResponse), res_resp->ret); - if (!q->answer) { - q->ret = -1; - q->_errno = ENOMEM; - q->_h_errno = 0; - } - } - - return complete_query(resolve, q); - } - default: return 0; } @@ -1181,79 +1077,6 @@ static int getnameinfo_done(sd_resolve_query *q) { return q->getnameinfo_handler(q, q->ret, q->host, q->serv, q->userdata); } -static int resolve_res( - sd_resolve *resolve, - sd_resolve_query **_q, - QueryType qtype, - const char *dname, - int class, int type, - sd_resolve_res_handler_t callback, void *userdata) { - - struct msghdr mh = {}; - struct iovec iov[2]; - ResRequest req = {}; - sd_resolve_query *q; - int r; - - assert_return(resolve, -EINVAL); - assert_return(dname, -EINVAL); - assert_return(callback, -EINVAL); - assert_return(!resolve_pid_changed(resolve), -ECHILD); - - r = alloc_query(resolve, !_q, &q); - if (r < 0) - return r; - - q->type = qtype; - q->res_handler = callback; - q->userdata = userdata; - - req.dname_len = strlen(dname) + 1; - req.class = class; - req.type = type; - - req.header.id = q->id; - req.header.type = qtype; - req.header.length = sizeof(ResRequest) + req.dname_len; - - iov[0] = (struct iovec) { .iov_base = &req, .iov_len = sizeof(ResRequest) }; - iov[1] = (struct iovec) { .iov_base = (void*) dname, .iov_len = req.dname_len }; - - mh.msg_iov = iov; - mh.msg_iovlen = 2; - - if (sendmsg(resolve->fds[REQUEST_SEND_FD], &mh, MSG_NOSIGNAL) < 0) { - sd_resolve_query_unref(q); - return -errno; - } - - resolve->n_outstanding++; - - if (_q) - *_q = q; - - return 0; -} - -_public_ int sd_resolve_res_query(sd_resolve *resolve, sd_resolve_query** q, const char *dname, int class, int type, sd_resolve_res_handler_t callback, void *userdata) { - return resolve_res(resolve, q, REQUEST_RES_QUERY, dname, class, type, callback, userdata); -} - -_public_ int sd_resolve_res_search(sd_resolve *resolve, sd_resolve_query** q, const char *dname, int class, int type, sd_resolve_res_handler_t callback, void *userdata) { - return resolve_res(resolve, q, REQUEST_RES_SEARCH, dname, class, type, callback, userdata); -} - -static int res_query_done(sd_resolve_query* q) { - assert(q); - assert(q->done); - assert(q->res_handler); - - errno = q->_errno; - h_errno = q->_h_errno; - - return q->res_handler(q, q->ret, q->answer, q->userdata); -} - _public_ sd_resolve_query* sd_resolve_query_ref(sd_resolve_query *q) { assert_return(q, NULL); @@ -1310,7 +1133,6 @@ static void resolve_query_free(sd_resolve_query *q) { resolve_freeaddrinfo(q->addrinfo); free(q->host); free(q->serv); - free(q->answer); free(q); } diff --git a/src/libsystemd/sd-resolve/test-resolve.c b/src/libsystemd/sd-resolve/test-resolve.c index 354a4071b7..e8056529f5 100644 --- a/src/libsystemd/sd-resolve/test-resolve.c +++ b/src/libsystemd/sd-resolve/test-resolve.c @@ -67,59 +67,8 @@ static int getnameinfo_handler(sd_resolve_query *q, int ret, const char *host, c return 0; } -static int res_handler(sd_resolve_query *q, int ret, unsigned char *answer, void *userdata) { - int qdcount, ancount, len; - const unsigned char *pos = answer + sizeof(HEADER); - unsigned char *end = answer + ret; - HEADER *head = (HEADER *) answer; - char name[256]; - assert_se(q); - - if (ret < 0) { - log_error("res_query() error: %s %i", strerror(errno), errno); - return 0; - } - - if (ret == 0) { - log_error("No reply for SRV lookup"); - return 0; - } - - qdcount = ntohs(head->qdcount); - ancount = ntohs(head->ancount); - - printf("%d answers for srv lookup:\n", ancount); - - /* Ignore the questions */ - while (qdcount-- > 0 && (len = dn_expand(answer, end, pos, name, 255)) >= 0) { - assert_se(len >= 0); - pos += len + QFIXEDSZ; - } - - /* Parse the answers */ - while (ancount-- > 0 && (len = dn_expand(answer, end, pos, name, 255)) >= 0) { - /* Ignore the initial string */ - uint16_t pref, weight, port; - assert_se(len >= 0); - pos += len; - /* Ignore type, ttl, class and dlen */ - pos += 10; - - GETSHORT(pref, pos); - GETSHORT(weight, pos); - GETSHORT(port, pos); - len = dn_expand(answer, end, pos, name, 255); - printf("\tpreference: %2d weight: %2d port: %d host: %s\n", - pref, weight, port, name); - - pos += len; - } - - return 0; -} - int main(int argc, char *argv[]) { - _cleanup_resolve_query_unref_ sd_resolve_query *q1 = NULL, *q2 = NULL, *q3 = NULL; + _cleanup_resolve_query_unref_ sd_resolve_query *q1 = NULL, *q2 = NULL; _cleanup_resolve_unref_ sd_resolve *resolve = NULL; int r = 0; @@ -150,15 +99,9 @@ int main(int argc, char *argv[]) { if (r < 0) log_error_errno(r, "sd_resolve_getnameinfo(): %m"); - /* Make a res_query() call */ - r = sd_resolve_res_query(resolve, &q3, "_xmpp-client._tcp.gmail.com", C_IN, T_SRV, res_handler, NULL); - if (r < 0) - log_error_errno(r, "sd_resolve_res_query(): %m"); - - /* Wait until the three queries are completed */ + /* Wait until the two queries are completed */ while (sd_resolve_query_is_done(q1) == 0 || - sd_resolve_query_is_done(q2) == 0 || - sd_resolve_query_is_done(q3) == 0) { + sd_resolve_query_is_done(q2) == 0) { r = sd_resolve_wait(resolve, (uint64_t) -1); if (r < 0) { diff --git a/src/systemd/sd-resolve.h b/src/systemd/sd-resolve.h index 36cedcd6b5..80c5852e45 100644 --- a/src/systemd/sd-resolve.h +++ b/src/systemd/sd-resolve.h @@ -40,7 +40,6 @@ typedef struct sd_resolve_query sd_resolve_query; /* A callback on completion */ typedef int (*sd_resolve_getaddrinfo_handler_t)(sd_resolve_query *q, int ret, const struct addrinfo *ai, void *userdata); typedef int (*sd_resolve_getnameinfo_handler_t)(sd_resolve_query *q, int ret, const char *host, const char *serv, void *userdata); -typedef int (*sd_resolve_res_handler_t)(sd_resolve_query* q, int ret, unsigned char *answer, void *userdata); enum { SD_RESOLVE_GET_HOST = 1ULL, @@ -99,18 +98,6 @@ int sd_resolve_getaddrinfo(sd_resolve *resolve, sd_resolve_query **q, const char * if you want to query the hostname (resp. the service name). */ int sd_resolve_getnameinfo(sd_resolve *resolve, sd_resolve_query **q, const struct sockaddr *sa, socklen_t salen, int flags, uint64_t get, sd_resolve_getnameinfo_handler_t callback, void *userdata); -/* Issue a resolver query on the specified session. The arguments are - * compatible with those of libc's res_query(3). The function returns a new - * query object. When the query is completed, you may retrieve the results using - * sd_resolve_res_done(). */ -int sd_resolve_res_query(sd_resolve *resolve, sd_resolve_query **q, const char *dname, int clazz, int type, sd_resolve_res_handler_t callback, void *userdata); - -/* Issue a resolver query on the specified session. The arguments are - * compatible with those of libc's res_search(3). The function returns a new - * query object. When the query is completed, you may retrieve the results using - * sd_resolve_res_done(). */ -int sd_resolve_res_search(sd_resolve *resolve, sd_resolve_query **q, const char *dname, int clazz, int type, sd_resolve_res_handler_t callback, void *userdata); - sd_resolve_query *sd_resolve_query_ref(sd_resolve_query* q); sd_resolve_query *sd_resolve_query_unref(sd_resolve_query* q); |