* $Header$
*
* Copyright (C) 1987 by the Massachusetts Institute of Technology
- *
- * $Log$
- * Revision 1.1 1987-06-02 20:07:10 wesommer
- * Initial revision
+ * For copying and distribution information, please see the file
+ * <mit-copyright.h>.
*
*/
static char *rcsid_sms_scall_c = "$Header$";
#endif lint
+#include <mit-copyright.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/file.h>
#include <krb.h>
-#include "sms_private.h"
-#include "sms_server.h"
+#include <errno.h>
+#include "query.h"
+#include "mr_server.h"
extern char buf1[];
extern int nclients;
extern char *whoami;
+extern int errno;
extern void clist_delete(), do_auth(), do_shutdown();
void do_call();
+extern int ingres_errno, mr_errcode;
+static int row_count;
+
+/* Put this in a variable so that we can patch it if necessary */
+int max_row_count = 2048;
/*
* Welcome to the (finite state) machine (highest level).
do_client(cp)
client *cp;
{
+ struct stat stbuf;
+
+ free_rtn_tuples(cp);
if (OP_STATUS(cp->pending_op) == OP_CANCELLED) {
- (void) sprintf(buf1, "Closed connection (now %d client%s)",
- nclients-1,
- nclients!=2?"s":"");
- com_err(whoami, 0, buf1);
+ com_err(whoami, 0, "Closed connection (now %d client%s, %d new queries, %d old)",
+ nclients-1,
+ nclients!=2?"s":"",
+ newqueries,
+ oldqueries);
clist_delete(cp);
+ /* if we no longer have any clients, and we're supposed to
+ * go down, then go down now.
+ */
+ if ((dormant == AWAKE) && (nclients == 0) &&
+ (stat(MOIRA_MOTD_FILE, &stbuf) == 0)) {
+ com_err(whoami, 0, "motd file exists, slumbertime");
+ dormant = SLEEPY;
+ }
return;
}
switch (cp->action) {
case CL_ACCEPT:
case CL_SEND:
/* Start recieving next request */
- initialize_operation(cp->pending_op, sms_start_recv,
- (char *)&cp->args, NULL);
+ initialize_operation(cp->pending_op, mr_start_recv,
+ (char *)&cp->args, (int (*)())NULL);
queue_operation(cp->con, CON_INPUT, cp->pending_op);
cp->action = CL_RECEIVE;
break;
case CL_RECEIVE:
/* Data is here. Process it & start it heading back */
do_call(cp); /* This may block for a while. */
- initialize_operation(cp->pending_op, sms_start_send,
- (char *)&cp->reply, NULL);
+ mr_destroy_reply(cp->args);
+ cp->args = NULL;
+ initialize_operation(cp->pending_op, mr_start_send,
+ (char *)&cp->reply, (int (*)())NULL);
queue_operation(cp->con, CON_OUTPUT, cp->pending_op);
cp->action = CL_SEND;
break;
}
}
-#ifdef notdef
char *procnames[] = {
"noop",
"auth",
"shutdown",
- "retrieve",
- "append",
- "delete",
- "edit",
- };
-#endif notdef
+ "query",
+ "access",
+ "dcm",
+ "motd",
+};
+
void
do_call(cl)
client *cl;
{
int pn;
- cl->reply.sms_argc = 0;
- cl->reply.sms_status = 0;
- if (((pn = cl->args->sms_procno) < 0) ||
- (pn > SMS_MAX_PROC)) {
+ extern int ingres_errno;
+ cl->reply.mr_argc = 0;
+ cl->reply.mr_status = 0;
+ cl->reply.mr_version_no = cl->args->mr_version_no;
+ if (((pn = cl->args->mr_procno) < 0) ||
+ (pn > MR_MAX_PROC)) {
com_err(whoami, 0, "procno out of range");
- cl->reply.sms_status = SMS_UNKNOWN_PROC;
+ cl->reply.mr_status = MR_UNKNOWN_PROC;
return;
}
-#ifdef SMS_DBG
- fprintf(stderr, "[#%d] %s(", cl->id, procnames[pn]);
- for (i=0; i < cl->args->sms_argc; i++) {
- if (i) fputc(',', stderr);
- frequote(stderr,cl->args->sms_argv[i]);
+ if (log_flags & LOG_ARGS)
+ log_args(procnames[pn], cl->args->mr_version_no,
+ cl->args->mr_argc, cl->args->mr_argv);
+ else if (log_flags & LOG_REQUESTS)
+ com_err(whoami, 0, "%s", procnames[pn]);
+
+ if ((dormant == ASLEEP || dormant == GROGGY) &&
+ pn != MR_NOOP && pn != MR_MOTD) {
+ cl->reply.mr_status = MR_DOWN;
+ if (log_flags & LOG_RES)
+ com_err(whoami, MR_DOWN, "(query refused)");
+ return;
}
- fprintf(stderr, ")\n");
-#endif SMS_DBG
+
+ /* make sure this gets cleared before every operation */
+ ingres_errno = 0;
switch(pn) {
- case SMS_NOOP:
- cl->reply.sms_status = 0;
- com_err(whoami, 0, "noop");
+ case MR_NOOP:
+ cl->reply.mr_status = 0;
return;
- case SMS_AUTH:
+
+ case MR_AUTH:
do_auth(cl);
return;
-#ifdef notdef
- case SMS_RETRIEVE:
+
+ case MR_QUERY:
do_retr(cl);
return;
-#endif notdef
- case SMS_SHUTDOWN:
+ case MR_ACCESS:
+ do_access(cl);
+ return;
+
+ case MR_SHUTDOWN:
do_shutdown(cl);
return;
+
+ case MR_DO_UPDATE:
+ trigger_dcm(0, 0, cl);
+ return;
+
+ case MR_MOTD:
+ get_motd(cl);
+ return;
}
}
-#ifdef notdef
+free_rtn_tuples(cp)
+ client *cp;
+{
+ register returned_tuples *temp;
+ for (temp=cp->first; temp && OP_DONE(temp->op); ) {
+ register returned_tuples *t1=temp;
+ temp = t1->next;
+ if (t1 == cp->last) cp->last = NULL;
+
+ mr_destroy_reply(t1->retval);
+ delete_operation(t1->op);
+ free(t1);
+ }
+ cp->first = temp;
+}
+
+retr_callback(argc, argv, p_cp)
+ register int argc;
+ register char **argv;
+ char *p_cp;
+{
+ register client *cp = (client *)p_cp;
+ mr_params *arg_tmp;
+ returned_tuples *tp;
+ OPERATION op_tmp;
+ register char **nargv;
+ register int i;
+
+ if (row_count++ >= max_row_count) {
+ ingres_errno = mr_errcode = MR_NO_MEM;
+ return;
+ }
+
+ /*
+ * This takes too much advantage of the fact that
+ * serialization of the data happens during the queue operation.
+ */
+ arg_tmp = (mr_params *)db_alloc(sizeof(mr_params));
+ tp = (returned_tuples *)db_alloc(sizeof(returned_tuples));
+ nargv = (char **)malloc(argc * sizeof(char *));
+
+ op_tmp = create_operation();
+
+ if (mr_trim_args(argc, argv) == MR_NO_MEM) {
+ com_err(whoami, MR_NO_MEM, "while trimming args");
+ }
+ if (log_flags & LOG_RESP)
+ log_args("return: ", cp->args->mr_version_no, argc, argv);
+
+ tp->op = op_tmp;
+ tp->retval = arg_tmp;
+ tp->next = NULL;
+
+ arg_tmp->mr_status = MR_MORE_DATA;
+ arg_tmp->mr_version_no = cp->args->mr_version_no;
+ arg_tmp->mr_argc = argc;
+ arg_tmp->mr_argv = nargv;
+ for (i = 0; i < argc; i++) {
+ register int len = strlen(argv[i]) + 1;
+ nargv[i] = malloc(len);
+ bcopy(argv[i], nargv[i], len);
+ }
+ arg_tmp->mr_flattened = (char *)NULL;
+ arg_tmp->mr_argl = (int *)NULL;
+
+ if (cp->last) {
+ cp->last->next = tp;
+ cp->last = tp;
+ } else {
+ cp->last = cp->first = tp;
+ }
+
+ reset_operation(op_tmp);
+ initialize_operation(op_tmp, mr_start_send, (char *)arg_tmp,
+ (int (*)())NULL);
+ queue_operation(cp->con, CON_OUTPUT, op_tmp);
+}
+
+list_users(callbk, callarg)
+ int (*callbk)();
+ char *callarg;
+{
+ char *argv[6];
+ char buf[30];
+ char buf1[30];
+ int i;
+ extern client **clients;
+ extern char *inet_ntoa();
+ char *cp;
+ char *ctime();
+
+ for (i = 0; i < nclients; i++) {
+ register client *cl = clients[i];
+ if (cl->clname)
+ argv[0] = cl->clname;
+ else argv[0] = "unauthenticated";
+
+ argv[1] = inet_ntoa(cl->haddr.sin_addr);
+ argv[2] = buf;
+ sprintf(buf, "port %d", ntohs(cl->haddr.sin_port));
+ argv[3] = ctime(&cl->last_time_used);
+ cp = index(argv[3], '\n');
+ if (cp) *cp = '\0';
+ argv[4] = buf1;
+ sprintf(buf1, "[#%d]", cl->id);
+ (*callbk)(5, argv, callarg);
+ }
+ return 0;
+}
+
do_retr(cl)
+ register client *cl;
+{
+ register char *queryname;
+
+ cl->reply.mr_argc = 0;
+ cl->reply.mr_status = 0;
+ row_count = 0;
+
+ if (cl->args->mr_argc < 1) {
+ cl->reply.mr_status = MR_ARGS;
+ com_err(whoami, MR_ARGS, "got nameless query");
+ return;
+ }
+ queryname = cl->args->mr_argv[0];
+
+ if (cl->args->mr_version_no == MR_VERSION_2)
+ newqueries++;
+ else
+ oldqueries++;
+
+ if (strcmp(queryname, "_list_users") == 0)
+ cl->reply.mr_status = list_users(retr_callback, (char *)cl);
+ else {
+ cl->reply.mr_status =
+ mr_process_query(cl,
+ queryname,
+ cl->args->mr_argc-1,
+ cl->args->mr_argv+1,
+ retr_callback,
+ (char *)cl);
+ }
+ if (row_count >= max_row_count) {
+ critical_alert("moirad", "attempted query %s with %d rows\n",
+ queryname, row_count);
+ }
+
+ if (log_flags & LOG_RES)
+ com_err(whoami, 0, "Query complete.");
+}
+
+do_access(cl)
client *cl;
{
+ if (cl->args->mr_argc < 1) {
+ cl->reply.mr_status = MR_ARGS;
+ com_err(whoami, MR_ARGS, "got nameless access");
+ return;
+ }
+ cl->reply.mr_argc = 0;
+
+ cl->reply.mr_status =
+ mr_check_access(cl,
+ cl->args->mr_argv[0],
+ cl->args->mr_argc-1,
+ cl->args->mr_argv+1);
+ com_err(whoami, 0, "Access check complete.");
+}
+
+
+/* trigger_dcm is also used as a followup routine to the
+ * set_server_host_override query, hence the two dummy arguments.
+ */
+
+struct query pseudo_query = {
+ "trigger_dcm",
+ "tdcm",
+};
+
+trigger_dcm(dummy0, dummy1, cl)
+ int dummy0, dummy1;
+ client *cl;
+{
+ register int pid;
+ char prog[128];
+
+ cl->reply.mr_argc = 0;
+
+ if (cl->reply.mr_status = check_query_access(&pseudo_query, 0, cl) )
+ return(cl->reply.mr_status);
+
+ sprintf(prog, "%s/startdcm", BIN_DIR);
+ pid = vfork();
+ switch (pid) {
+ case 0:
+ for (dummy0 = getdtablesize() - 1; dummy0 > 2; dummy0--)
+ close(dummy0);
+ execl(prog, "startdcm", 0);
+ exit(1);
+
+ case -1:
+ cl->reply.mr_status = errno;
+ return(0);
+
+ default:
+ return(0);
+ }
+}
+
+
+get_motd(cl)
+client *cl;
+{
+ int motd, len;
+ char buffer[1024];
+ char *arg[1];
+
+ arg[0] = buffer;
+ cl->reply.mr_status = 0;
+ motd = open(MOIRA_MOTD_FILE, 0, O_RDONLY);
+ if (motd < 0) return;
+ len = read(motd, buffer, sizeof(buffer) - 1);
+ close(motd);
+ buffer[len] = 0;
+ row_count = 0;
+ retr_callback(1, arg, cl);
+ cl->reply.mr_status = 0;
}
-#endif notdef
andersk / moira.git / blobdiff