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-rw-r--r--Makefile14
-rw-r--r--README.md7
-rw-r--r--index.htm.tmpl8
-rw-r--r--main.c98
-rwxr-xr-xmonitorbin0 -> 29912 bytes
-rw-r--r--monitor.c105
-rw-r--r--monitor.cfg6
-rw-r--r--monitor.h8
8 files changed, 245 insertions, 1 deletions
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..bc05321
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,14 @@
+CC = gcc
+CFLAGS = -g -Wall -pedantic
+LDFLAGS = -lmicrohttpd
+
+BIN = monitor
+SRC = main.c monitor.c
+
+$(BIN): $(SRC)
+ $(CC) -o $@ $(CFLAGS) $^ $(LDFLAGS)
+
+.PHONY: clean
+clean:
+ rm $(BIN)
+
diff --git a/README.md b/README.md
index 2f0b344..a373746 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,10 @@
# arfnet2-status
ARFNET Status Monitor
+
+## Features (TODO)
+
+ - Current service status table
+ - Outage events table
+ - Uptime counter (total, month)
+
diff --git a/index.htm.tmpl b/index.htm.tmpl
index a9022d8..462f744 100644
--- a/index.htm.tmpl
+++ b/index.htm.tmpl
@@ -4,6 +4,11 @@
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="https://arf20.com/style.css">
<title>ARFNET</title>
+ <style>
+table, th, td {
+ border: 1px solid #abb2bf;
+}
+ </style>
</head>
<body>
@@ -15,7 +20,8 @@
<h2 class="center">Status Monitor</h2>
<p>This webapp monitors the status of the main ARFNET services from outside the ARFNET network</p>
<table>
-
+ <tr><th>Type</th><th>Service</th><th>Status</th></tr>
+ %s
</table>
</main>
</body>
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..f01d928
--- /dev/null
+++ b/main.c
@@ -0,0 +1,98 @@
+#include <sys/types.h>
+#include <sys/select.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <microhttpd.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "monitor.h"
+
+#define PORT 8888
+#define RES_BUFF 65535
+
+static char *index_format_template = NULL;
+
+
+enum MHD_Result answer_to_connection(
+ void *cls, struct MHD_Connection *connection,
+ const char *url,
+ const char *method,
+ const char *version,
+ const char *upload_data,
+ size_t *upload_data_size,
+ void **ptr
+) {
+ char buff[RES_BUFF];
+
+ const struct sockaddr_in **coninfo =
+ (const struct sockaddr_in**)MHD_get_connection_info(
+ connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS);
+
+ printf("%s - %s %s: ", inet_ntoa((*coninfo)->sin_addr), method, url);
+
+ struct MHD_Response *response;
+ int ret;
+
+ if (strcmp(method, "GET") == 0 && strcmp(url, "/") == 0) {
+ snprintf(buff, RES_BUFF,
+ index_format_template, monitor_generate_status_html());
+
+ response = MHD_create_response_from_buffer(strlen(buff), (void*)buff,
+ MHD_RESPMEM_PERSISTENT);
+
+ printf("%d\n", 200);
+ ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
+ MHD_destroy_response(response);
+ }
+ else {
+ response = MHD_create_response_from_buffer(0, (void*)NULL, 0);
+ printf("%d\n", 418);
+ ret = MHD_queue_response(connection, 418, response);
+ MHD_destroy_response(response);
+ }
+ return ret;
+}
+
+int main() {
+ /* read index template file */
+ FILE *tf = fopen("index.htm.tmpl", "r");
+ if (!tf) {
+ fprintf(stderr, "error opening index template file: %s\n",
+ strerror(errno));
+ return 1;
+ }
+ fseek(tf, 0, SEEK_END);
+ size_t tfs = ftell(tf);
+ rewind(tf);
+ index_format_template = malloc(tfs);
+ fread(index_format_template, 1, tfs, tf);
+ fclose(tf);
+
+ /* start server */
+ struct MHD_Daemon *daemon;
+
+ daemon = MHD_start_daemon(
+ MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_EPOLL,
+ PORT, NULL, NULL,
+ &answer_to_connection, NULL, MHD_OPTION_END);
+
+ if (!daemon) {
+ fprintf(stderr, "error starting libmicrohttpd daemon: \n");
+ return 1;
+ }
+
+ monitor_init("monitor.cfg");
+
+ while (1) {
+ monitor_check();
+ sleep(5);
+ }
+}
+
diff --git a/monitor b/monitor
new file mode 100755
index 0000000..3992ddc
--- /dev/null
+++ b/monitor
Binary files differ
diff --git a/monitor.c b/monitor.c
new file mode 100644
index 0000000..c9903ce
--- /dev/null
+++ b/monitor.c
@@ -0,0 +1,105 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "monitor.h"
+
+typedef enum {
+ TYPE_REACH,
+ TYPE_DNS,
+ TYPE_WEB
+} type_t;
+
+const char *type_str[] = { "reach", "dns", "web" };
+
+typedef enum {
+ STATUS_DOWN,
+ STATUS_UP
+} status_t;
+
+typedef struct {
+ type_t type;
+ char *target;
+ status_t status;
+} target_t;
+
+static target_t targets[256];
+static size_t target_n = 0;
+
+int
+monitor_init(const char *cfg_file) {
+ FILE *cfgf = fopen(cfg_file, "r");
+ if (!cfgf) {
+ fprintf(stderr, "Error opening config: %s\n", strerror(errno));
+ return -1;
+ }
+
+ printf("monitor targets:\n");
+
+ char line[256];
+ while (fgets(line, sizeof(line), cfgf)) {
+ if (*line == '#' || *line == '\n')
+ continue;
+
+ char *type = line;
+ char *target = strchr(line, '=');
+ if (!target) {
+ fprintf(stderr, "malformed config line: %s\n", line);
+ continue;
+ }
+
+
+ *target = '\0';
+ target++;
+
+ if (strcmp(type, "reach") == 0)
+ targets[target_n].type = TYPE_REACH;
+ else if (strcmp(type, "dns") == 0)
+ targets[target_n].type = TYPE_DNS;
+ else if (strcmp(type, "web") == 0)
+ targets[target_n].type = TYPE_WEB;
+
+ targets[target_n].target = strdup(target);
+ targets[target_n].status = STATUS_DOWN;
+
+ printf("\t%s: %s", type_str[targets[target_n].type],
+ targets[target_n].target);
+
+ target_n++;
+ }
+
+ fclose(cfgf);
+
+ return 0;
+}
+
+const char *
+monitor_generate_status_html()
+{
+ static char buff[65535];
+
+ static char *status_html[] = {
+ "down",
+ "up"
+ };
+
+ char *pos = buff;
+
+ for (size_t i = 0; i < target_n; i++) {
+ pos += snprintf(pos, 65535,
+ "<tr><td>%s</td><td>%s</td><td>%s</td></tr>\n",
+ type_str[targets[i].type],
+ targets[i].target,
+ status_html[targets[i].status]);
+ }
+
+ return buff;
+}
+
+void
+monitor_check()
+{
+
+}
+
diff --git a/monitor.cfg b/monitor.cfg
new file mode 100644
index 0000000..1e2f9dc
--- /dev/null
+++ b/monitor.cfg
@@ -0,0 +1,6 @@
+# Monitor config
+# type=target
+reach=2.59.235.35
+dns=arf20.com
+web=http://arf20.com
+
diff --git a/monitor.h b/monitor.h
new file mode 100644
index 0000000..f9d4458
--- /dev/null
+++ b/monitor.h
@@ -0,0 +1,8 @@
+#ifndef _MONITOR_H
+#define _MONITOR_H
+
+int monitor_init(const char *cfg_file);
+const char *monitor_generate_status_html();
+void monitor_check();
+
+#endif /* _MONITOR_H */
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-28 17:36:01 +0000