source3/torture/msg_source.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Send messages once a second
   4  *  Copyright (C) Volker Lendecke 2014
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "replace.h"
  21 #include "includes.h"
  22 #include "messages.h"
  23 #include "lib/util/tevent_unix.h"
  24 #include <stdio.h>
  25
  26 struct source_state {
  27         struct tevent_context *ev;
  28         struct messaging_context *msg_ctx;
  29         int msg_type;
  30         struct timeval interval;
  31         struct server_id dst;
  32 };
  33
  34 static void source_waited(struct tevent_req *subreq);
  35
  36 static struct tevent_req *source_send(TALLOC_CTX *mem_ctx,
  37                                       struct tevent_context *ev,
  38                                       struct messaging_context *msg_ctx,
  39                                       int msg_type,
  40                                       struct timeval interval,
  41                                       struct server_id dst)
  42 {
  43         struct tevent_req *req, *subreq;
  44         struct source_state *state;
  45
  46         req = tevent_req_create(mem_ctx, &state, struct source_state);
  47         if (req == NULL) {
  48                 return NULL;
  49         }
  50         state->ev = ev;
  51         state->msg_ctx = msg_ctx;
  52         state->msg_type = msg_type;
  53         state->interval = interval;
  54         state->dst = dst;
  55
  56         subreq = tevent_wakeup_send(
  57                 state, state->ev,
  58                 timeval_current_ofs(state->interval.tv_sec,
  59                                     state->interval.tv_usec));
  60         if (tevent_req_nomem(subreq, req)) {
  61                 return tevent_req_post(req, ev);
  62         }
  63         tevent_req_set_callback(subreq, source_waited, req);
  64         return req;
  65 }
  66
  67 static void source_waited(struct tevent_req *subreq)
  68 {
  69         struct tevent_req *req = tevent_req_callback_data(
  70                 subreq, struct tevent_req);
  71         struct source_state *state = tevent_req_data(
  72                 req, struct source_state);
  73         bool ok;
  74         uint8_t buf[200] = { };
  75
  76         ok = tevent_wakeup_recv(subreq);
  77         TALLOC_FREE(subreq);
  78         if (!ok) {
  79                 tevent_req_error(req, ENOMEM);
  80                 return;
  81         }
  82
  83         messaging_send_buf(state->msg_ctx, state->dst, state->msg_type,
  84                            buf, sizeof(buf));
  85
  86         subreq = tevent_wakeup_send(
  87                 state, state->ev,
  88                 timeval_current_ofs(state->interval.tv_sec,
  89                                     state->interval.tv_usec));
  90         if (tevent_req_nomem(subreq, req)) {
  91                 return;
  92         }
  93         tevent_req_set_callback(subreq, source_waited, req);
  94 }
  95
  96 static int source_recv(struct tevent_req *req)
  97 {
  98         int err;
  99
 100         if (tevent_req_is_unix_error(req, &err)) {
 101                 return err;
 102         }
 103         return 0;
 104 }
 105
 106 int main(int argc, const char *argv[])
 107 {
 108         TALLOC_CTX *frame = talloc_stackframe();
 109         struct tevent_context *ev;
 110         struct messaging_context *msg_ctx;
 111         struct tevent_req *req;
 112         int ret;
 113         struct server_id id;
 114
 115         if (argc != 2) {
 116                 fprintf(stderr, "Usage: %s <dst>\n", argv[0]);
 117                 return -1;
 118         }
 119
 120         lp_load_global(get_dyn_CONFIGFILE());
 121
 122         ev = tevent_context_init(frame);
 123         if (ev == NULL) {
 124                 perror("tevent_context_init failed");
 125                 return -1;
 126         }
 127
 128         msg_ctx = messaging_init(ev, ev);
 129         if (msg_ctx == NULL) {
 130                 perror("messaging_init failed");
 131                 return -1;
 132         }
 133
 134         id = server_id_from_string(get_my_vnn(), argv[1]);
 135         if (!procid_valid(&id)) {
 136                 fprintf(stderr, "pid %s invalid\n", argv[1]);
 137                 return -1;
 138         }
 139
 140         req = source_send(ev, ev, msg_ctx, MSG_SMB_NOTIFY,
 141                           timeval_set(0, 10000), id);
 142         if (req == NULL) {
 143                 perror("source_send failed");
 144                 return -1;
 145         }
 146
 147         if (!tevent_req_poll(req, ev)) {
 148                 perror("tevent_req_poll failed");
 149                 return -1;
 150         }
 151
 152         ret = source_recv(req);
 153
 154         printf("source_recv returned %d\n", ret);
 155
 156         return 0;
 157 }