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Max gerrit-no-reply at lists.osmocom.orgMax has submitted this change and it was merged. ( https://gerrit.osmocom.org/12761 )
Change subject: Introduce generic host config and related helpers
......................................................................
Introduce generic host config and related helpers
Add generic host config struct and related helpers for TCP-based probes
and use them for ctrl probe.
This will be used in follow-up patch for OpenVPN probe as well.
Change-Id: Ie321655a92cdbefbfaa056ac0d583397c83beccb
---
M src/Makefile.am
A src/client.c
A src/client.h
M src/osysmon_ctrl.c
M src/simple_ctrl.c
M src/simple_ctrl.h
6 files changed, 133 insertions(+), 38 deletions(-)
Approvals:
Jenkins Builder: Verified
Harald Welte: Looks good to me, approved
Objections:
Pau Espin Pedrol: I would prefer this is not merged as is
diff --git a/src/Makefile.am b/src/Makefile.am
index d0d6a22..f639023 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -21,7 +21,7 @@
$(NULL)
noinst_LTLIBRARIES = libintern.la
-libintern_la_SOURCES = simple_ctrl.c
+libintern_la_SOURCES = simple_ctrl.c client.c
libintern_la_LIBADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS)
osmo_sysmon_CFLAGS = $(LIBMNL_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOPING_CFLAGS) $(AM_CFLAGS)
@@ -44,6 +44,7 @@
noinst_HEADERS = \
osysmon.h \
+ client.h \
simple_ctrl.h \
value_node.h \
$(NULL)
diff --git a/src/client.c b/src/client.c
new file mode 100644
index 0000000..6b37fc6
--- /dev/null
+++ b/src/client.c
@@ -0,0 +1,73 @@
+/* Generic client structure and related helpers */
+
+/* (C) 2018 by Harald Welte <laforge at gnumonks.org>
+ * (C) 2019 by sysmocom - s.f.m.c. GmbH.
+ * All Rights Reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <stdbool.h>
+#include <string.h>
+#include <talloc.h>
+
+#include <osmocom/core/utils.h>
+
+#include "client.h"
+
+bool match_config(const struct host_cfg *cfg, const char *match, enum match_kind k)
+{
+ bool m_name = (strcmp(match, cfg->name) == 0),
+ m_host = (strcmp(match, cfg->remote_host) == 0);
+
+ switch (k) {
+ case MATCH_NAME:
+ return m_name;
+ case MATCH_HOST:
+ return m_host;
+ case MATCH_EITHER:
+ return m_name | m_host;
+ case MATCH_BOTH:
+ return m_name & m_host;
+ default:
+ return false;
+ }
+
+ return false;
+}
+
+struct host_cfg *host_cfg_alloc(void *ctx, const char *name, const char *host, uint16_t port)
+{
+ struct host_cfg *cfg = talloc_zero(ctx, struct host_cfg);
+ if (!cfg)
+ return NULL;
+
+ cfg->name = talloc_strdup(cfg, name);
+ cfg->remote_host = talloc_strdup(cfg, host);
+ cfg->remote_port = port;
+
+ return cfg;
+}
+
+char *make_authority(void *ctx, const struct host_cfg *cfg)
+{
+ if (!cfg->remote_host)
+ return NULL;
+
+ return talloc_asprintf(ctx, "%s:%u", cfg->remote_host, cfg->remote_port);
+}
diff --git a/src/client.h b/src/client.h
new file mode 100644
index 0000000..605ddd7
--- /dev/null
+++ b/src/client.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+enum match_kind {
+ MATCH_NAME,
+ MATCH_HOST,
+ MATCH_BOTH,
+ MATCH_EITHER,
+};
+
+/* a client config */
+struct host_cfg {
+ /* name of this client */
+ const char *name;
+ /* remote host/IP */
+ const char *remote_host;
+ /* remote port */
+ uint16_t remote_port;
+};
+
+struct host_cfg *host_cfg_alloc(void *ctx, const char *name, const char *host, uint16_t port);
+bool match_config(const struct host_cfg *cfg, const char *match, enum match_kind k);
+char *make_authority(void *ctx, const struct host_cfg *cfg);
diff --git a/src/osysmon_ctrl.c b/src/osysmon_ctrl.c
index c2d0725..c54779c 100644
--- a/src/osysmon_ctrl.c
+++ b/src/osysmon_ctrl.c
@@ -26,6 +26,7 @@
#include <osmocom/vty/vty.h>
#include <osmocom/vty/command.h>
+#include "client.h"
#include "osysmon.h"
#include "simple_ctrl.h"
#include "value_node.h"
@@ -38,7 +39,7 @@
struct ctrl_client {
/* links to osysmon.ctrl_clients */
struct llist_head list;
- struct ctrl_cfg cfg;
+ struct host_cfg *cfg;
struct simple_ctrl_handle *sch;
/* list of ctrl_client_get_var objects */
struct llist_head get_vars;
@@ -62,7 +63,7 @@
{
struct ctrl_client *cc;
llist_for_each_entry(cc, &os->ctrl_clients, list) {
- if (!strcmp(name, cc->cfg.name))
+ if (match_config(cc->cfg, name, MATCH_NAME))
return cc;
}
return NULL;
@@ -79,9 +80,13 @@
cc = talloc_zero(os, struct ctrl_client);
if (!cc)
return NULL;
- cc->cfg.name = talloc_strdup(cc, name);
- cc->cfg.remote_host = talloc_strdup(cc, host);
- cc->cfg.remote_port = port;
+
+ cc->cfg = host_cfg_alloc(cc, name, host, port);
+ if (!cc->cfg) {
+ talloc_free(cc);
+ return NULL;
+ }
+
INIT_LLIST_HEAD(&cc->get_vars);
llist_add_tail(&cc->list, &os->ctrl_clients);
/* FIXME */
@@ -156,10 +161,10 @@
struct ctrl_client *cc;
cc = ctrl_client_find(g_oss, argv[0]);
if (cc) {
- if ((strcmp(cc->cfg.remote_host, argv[1])) ||
- (cc->cfg.remote_port != atoi(argv[2]))) {
+ if ((strcmp(cc->cfg->remote_host, argv[1])) ||
+ (cc->cfg->remote_port != atoi(argv[2]))) {
vty_out(vty, "Client %s has different IP/port, please remove it first%s",
- cc->cfg.name, VTY_NEWLINE);
+ cc->cfg->name, VTY_NEWLINE);
return CMD_WARNING;
}
} else
@@ -215,8 +220,8 @@
static void write_one_ctrl_client(struct vty *vty, struct ctrl_client *cc)
{
struct ctrl_client_get_var *ccgv;
- vty_out(vty, "ctrl-client %s %s %u%s", cc->cfg.name,
- cc->cfg.remote_host, cc->cfg.remote_port, VTY_NEWLINE);
+ vty_out(vty, "ctrl-client %s %s %u%s", cc->cfg->name,
+ cc->cfg->remote_host, cc->cfg->remote_port, VTY_NEWLINE);
llist_for_each_entry(ccgv, &cc->get_vars, list) {
vty_out(vty, " get-variable %s%s", ccgv->cfg.name, VTY_NEWLINE);
if (ccgv->cfg.display_name)
@@ -259,11 +264,11 @@
static int ctrl_client_poll(struct ctrl_client *cc, struct value_node *parent)
{
struct ctrl_client_get_var *ccgv;
- struct value_node *vn_clnt = value_node_add(parent, cc->cfg.name, NULL);
+ struct value_node *vn_clnt = value_node_add(parent, cc->cfg->name, NULL);
/* attempt to re-connect */
if (!cc->sch)
- cc->sch = simple_ctrl_open(cc, cc->cfg.remote_host, cc->cfg.remote_port, 1000);
+ cc->sch = simple_ctrl_open(cc, cc->cfg->remote_host, cc->cfg->remote_port, 1000);
/* abort, if that failed */
if (!cc->sch) {
return -1;
diff --git a/src/simple_ctrl.c b/src/simple_ctrl.c
index b56fc83..883e92f 100644
--- a/src/simple_ctrl.c
+++ b/src/simple_ctrl.c
@@ -35,10 +35,11 @@
#include <osmocom/gsm/ipa.h>
#include <osmocom/gsm/protocol/ipaccess.h>
+#include "client.h"
#include "simple_ctrl.h"
-#define CTRL_ERR(cfg, fmt, args...) \
- fprintf(stderr, "CTRL %s:%u error: " fmt, cfg.remote_host, cfg.remote_port, ##args)
+#define CTRL_ERR(sch, fmt, args...) \
+ fprintf(stderr, "CTRL %s error: " fmt, make_authority(sch, &sch->cfg), ##args)
/***********************************************************************
* blocking I/O with timeout helpers
@@ -101,7 +102,7 @@
int fd;
uint32_t next_id;
uint32_t tout_msec;
- struct ctrl_cfg cfg;
+ struct host_cfg cfg;
};
struct simple_ctrl_handle *simple_ctrl_open(void *ctx, const char *host, uint16_t dport,
@@ -122,7 +123,7 @@
fd = osmo_sock_init(AF_INET, SOCK_STREAM, IPPROTO_TCP, host, dport,
OSMO_SOCK_F_CONNECT | OSMO_SOCK_F_NONBLOCK);
if (fd < 0) {
- CTRL_ERR(sch->cfg, "connecting socket: %s\n", strerror(errno));
+ CTRL_ERR(sch, "connecting socket: %s\n", strerror(errno));
return NULL;
}
@@ -131,17 +132,17 @@
FD_SET(fd, &writeset);
rc = select(fd+1, NULL, &writeset, NULL, timeval_from_msec(tout_msec));
if (rc == 0) {
- CTRL_ERR(sch->cfg, "timeout during connect\n");
+ CTRL_ERR(sch, "timeout during connect\n");
goto out_close;
}
if (rc < 0) {
- CTRL_ERR(sch->cfg, "error connecting socket: %s\n", strerror(errno));
+ CTRL_ERR(sch, "error connecting socket: %s\n", strerror(errno));
goto out_close;
}
/* set FD blocking again */
if (ioctl(fd, FIONBIO, (unsigned char *)&off) < 0) {
- CTRL_ERR(sch->cfg, "cannot set socket blocking: %s\n", strerror(errno));
+ CTRL_ERR(sch, "cannot set socket blocking: %s\n", strerror(errno));
goto out_close;
}
@@ -173,10 +174,10 @@
rc = read_timeout(sch->fd, (uint8_t *) &hh, sizeof(hh), sch->tout_msec);
if (rc < 0) {
- CTRL_ERR(sch->cfg, "read(): %d\n", rc);
+ CTRL_ERR(sch, "read(): %d\n", rc);
return NULL;
} else if (rc < sizeof(hh)) {
- CTRL_ERR(sch->cfg, "short read (header)\n");
+ CTRL_ERR(sch, "short read (header)\n");
return NULL;
}
len = ntohs(hh.len);
@@ -190,7 +191,7 @@
resp->l2h = resp->tail;
rc = read(sch->fd, resp->l2h, len);
if (rc < len) {
- CTRL_ERR(sch->cfg, "short read (payload)\n");
+ CTRL_ERR(sch, "short read (payload)\n");
msgb_free(resp);
return NULL;
}
@@ -222,7 +223,7 @@
*tmp = '\0';
return resp;
} else {
- CTRL_ERR(sch->cfg, "unknown IPA message %s\n", msgb_hexdump(resp));
+ CTRL_ERR(sch, "unknown IPA message %s\n", msgb_hexdump(resp));
msgb_free(resp);
}
}
@@ -237,10 +238,10 @@
rc = write_timeout(sch->fd, msg->data, msg->len, sch->tout_msec);
if (rc < 0) {
- CTRL_ERR(sch->cfg, "write(): %d\n", rc);
+ CTRL_ERR(sch, "write(): %d\n", rc);
return rc;
} else if (rc < msg->len) {
- CTRL_ERR(sch->cfg, "short write\n");
+ CTRL_ERR(sch, "short write\n");
msgb_free(msg);
return -1;
} else {
@@ -291,7 +292,7 @@
free(rx_var);
free(rx_val);
} else {
- CTRL_ERR(sch->cfg, "GET(%s) results in '%s'\n", var, (char *)msgb_l2(resp));
+ CTRL_ERR(sch, "GET(%s) results in '%s'\n", var, (char *)msgb_l2(resp));
}
msgb_free(resp);
@@ -329,7 +330,7 @@
free(rx_var);
}
} else {
- CTRL_ERR(sch->cfg, "SET(%s=%s) results in '%s'\n", var, val, (char *) msgb_l2(resp));
+ CTRL_ERR(sch, "SET(%s=%s) results in '%s'\n", var, val, (char *) msgb_l2(resp));
}
msgb_free(resp);
diff --git a/src/simple_ctrl.h b/src/simple_ctrl.h
index f35eab1..81a759d 100644
--- a/src/simple_ctrl.h
+++ b/src/simple_ctrl.h
@@ -2,16 +2,6 @@
#include <stdint.h>
-/* a CTRL client config */
-struct ctrl_cfg {
- /* name of this CTRL client */
- const char *name;
- /* remote host/IP */
- const char *remote_host;
- /* remote CTRL port */
- uint16_t remote_port;
-};
-
struct simple_ctrl_handle;
struct simple_ctrl_handle *simple_ctrl_open(void *ctx, const char *host, uint16_t dport,
--
To view, visit https://gerrit.osmocom.org/12761
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Gerrit-Project: osmo-sysmon
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: Ie321655a92cdbefbfaa056ac0d583397c83beccb
Gerrit-Change-Number: 12761
Gerrit-PatchSet: 6
Gerrit-Owner: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Jenkins Builder (1000002)
Gerrit-Reviewer: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Pau Espin Pedrol <pespin at sysmocom.de>
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