2 * Copyright (c) 2018, JANET(UK)
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42 #include <mon_internal.h>
43 #include <tr_socket.h>
47 * Allocate a new MONS_INSTANCE
49 * @param mem_ctx talloc context for allocation
50 * @return new MONS_INSTANCE or null on failure
52 MONS_INSTANCE *mons_new(TALLOC_CTX *mem_ctx)
54 MONS_INSTANCE *mons = talloc(mem_ctx, MONS_INSTANCE);
58 mons->req_handler = NULL;
59 mons->auth_handler = NULL;
61 mons->authorized_gss_names = tr_gss_names_new(mons);
62 if (mons->authorized_gss_names == NULL) {
71 * Create a listener for monitoring requests
73 * Accept connections with mons_accept()
75 * @param mons monitoring server instance
85 int mons_get_listener(MONS_INSTANCE *mons,
86 MONS_REQ_FUNC *req_handler,
87 MONS_AUTH_FUNC *auth_handler,
97 n_fd = tr_sock_listen_all(port, fd_out, max_fd);
99 tr_err("mons_get_listener: Error opening port %d");
101 /* opening port succeeded */
102 tr_info("mons_get_listener: Opened port %d.", port);
104 /* make this socket non-blocking */
105 for (ii=0; ii<n_fd; ii++) {
106 if (0 != fcntl(fd_out[ii], F_SETFL, O_NONBLOCK)) {
107 tr_err("mons_get_listener: Error setting O_NONBLOCK.");
108 for (ii=0; ii<n_fd; ii++) {
119 /* store the caller's request handler & cookie */
120 mons->req_handler = req_handler;
121 mons->auth_handler = auth_handler;
122 mons->cookie = cookie;
129 * Accept and process a connection on a port opened with mons_get_listener()
131 * @param mons monitoring interface instance
132 * @param listen FD of the connection socket
133 * @return 0 on success
135 int mons_accept(MONS_INSTANCE *mons, int listen)
140 if (0 > (conn = accept(listen, NULL, NULL))) {
141 perror("Error from monitoring interface accept()");
145 if (0 > (pid = fork())) {
146 perror("Error on fork()");
152 mons_handle_connection(mons, conn);
154 exit(0); /* exit to kill forked child process */
159 /* clean up any processes that have completed */
160 while (waitpid(-1, 0, WNOHANG) > 0);