From b9f3b8e32c0c33cb9b33289a2ba3ebebc5a09e41 Mon Sep 17 00:00:00 2001
From: Steffen Pohle <steffen@gulpe.de>
Date: Sun, 30 Jun 2024 18:35:28 +0200
Subject: [PATCH] default config

---
 configuration.cc | 61 +++++++++++++++++++++++++++++++++++++++++++++++-
 configuration.h  | 20 ++++++++++++++--
 main.cc          | 18 ++++++++++++++
 meson.build      |  3 ++-
 miniwebcam.h     | 10 ++++++++
 5 files changed, 108 insertions(+), 4 deletions(-)
 create mode 100644 miniwebcam.h

diff --git a/configuration.cc b/configuration.cc
index 3695b51..0587fb4 100644
--- a/configuration.cc
+++ b/configuration.cc
@@ -1,5 +1,64 @@
-
+#include <stdio.h>
+#include <string.h>
 #include "configuration.h"
+#include "miniwebcam.h"
+
 Configuration config;
 
+/*
+ * Setup default values for all configuration options
+ */
+Configuration::Configuration() {
+    http_port = DEFAULT_HTTP_PORT;
+    https_port = DEFAULT_HTTPS_PORT;
+    runasdaemon = 0;
+
+    initflags = 0;
+};
+
+Configuration::~Configuration() {
+};
+
+
+/*
+ * print current configuration
+ */
+int Configuration::Print() {
+    printf ("#\n# default ports for http and https\n");
+    if (http_port == DEFAULT_HTTP_PORT) printf ("# ");
+    printf ("http_port %d\n", http_port);
+    if (https_port == DEFAULT_HTTPS_PORT) printf ("# ");
+    printf ("https_port %d\n", https_port);
+
+    return 0;
+}
+
+int Configuration::LoadArgs(int argc, char **argv) {
+    for (int i = 1; i < argc; i++) {
+        if (strcmp(argv[i], "-F") == 0) runasdaemon = 0;
+        if (strcmp(argv[i], "-D") == 0) runasdaemon = 1;
+
+        if (strcmp(argv[i], "-dump_config") == 0) initflags |= CONF_INITFLAGS_PRINT;
+        if (strcmp(argv[i], "-h") == 0) initflags |= CONF_INITFLAGS_HELP;
+
+        if (strcmp(argv[i], "-http_port") == 0) {
+            if (++i < argc) {
+            }
+            else
+                ErrorExit("missing port parameter", -1);
+        }
+    }
+
+    return 0;
+}
+
+void Configuration::Help() {
+    printf ("Parameters:\n");
+    printf ("  -F                  run in foreground\n");
+    printf ("  -D                  run as daemon\n");
+    printf ("\n");
+    printf ("  -dump_config        print the config file\n");
+    printf ("\n");
+    printf ("  -H                  print this help\n");
+}
 
diff --git a/configuration.h b/configuration.h
index 28fe342..85a5aa5 100644
--- a/configuration.h
+++ b/configuration.h
@@ -2,13 +2,29 @@
 #ifndef _CONFIGURATION_H_
 #define _CONFIGURATION_H_
 
+#define DEFAULT_HTTP_PORT  10080
+#define DEFAULT_HTTPS_PORT 10081
+
+#define CONF_INITFLAGS_PRINT     0x0001
+#define CONF_INITFLAGS_HELP      0x0002
+
 class Configuration {
 private:
+    int http_port;
+    int https_port;
+    int runasdaemon;
+
+    int initflags;
+
 
 public:
-	Configuration() {};
-	~Configuration() {};
+    Configuration();
+    ~Configuration();
 
+    int LoadArgs(int argc, char **argv);
+    int Print();       // print current configuration
+    void Help();       // print Help
+    int GetInitFlags() { return initflags; };
 };
 
 extern Configuration config;
diff --git a/main.cc b/main.cc
index c98aca6..e311d1e 100644
--- a/main.cc
+++ b/main.cc
@@ -1,11 +1,29 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string>
 #include "configuration.h"
+#include "miniwebcam.h"
 
+void ErrorExit(std::string text, int errorcode) {
+    printf ("Error: %s\n", text.c_str());
+    exit (errorcode);
+}
 
 int main(int argc, char **argv) {
+    config.LoadArgs (argc, argv);
+    if (config.GetInitFlags() & CONF_INITFLAGS_PRINT) {
+        config.Print();
+        return 0;
+    }
+
+    if (config.GetInitFlags() & CONF_INITFLAGS_HELP) {
+        config.Help();
+        return 0;
+    }
+
     printf ("MiniWebCam:\n");
+
 	return 0;
 };
 
diff --git a/meson.build b/meson.build
index f6d63a7..ea77bfa 100644
--- a/meson.build
+++ b/meson.build
@@ -10,7 +10,8 @@ miniwebcam_src = [
 ]
 
 miniwebcam_headers = [
-	'configuration.h'
+	'configuration.h',
+	'miniwebcam.h'
 ]
 
 
diff --git a/miniwebcam.h b/miniwebcam.h
new file mode 100644
index 0000000..da1f19e
--- /dev/null
+++ b/miniwebcam.h
@@ -0,0 +1,10 @@
+
+#ifndef _MINIWEBCAM_H_
+#define _MINIWEBCAM_H_
+
+#include <string>
+
+void ErrorExit(std::string text, int errorcode);
+
+#endif
+