REFACTOR

src/helpers/connect_server.c

@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <netdb.h>
+#include <sys/socket.h>
+
+#include <logger.h>
+#include <helpers.h>
+
+int
+helper_connect_tcp_server(char* host, uint16_t port)
+{
+    char port_str[6];
+    sprintf(port_str, "%d", port);
+
+    int s, status;
+    struct addrinfo hints, *res;
+    memset(&hints, 0, sizeof hints);
+    hints.ai_family = AF_INET; //set IP Protocol flag (IPv4 or IPv6 - we don't care)
+    hints.ai_socktype = SOCK_STREAM; //set socket flag
+
+    if ((status = getaddrinfo(host, port_str, &hints, &res)) != 0) { //getaddrinfo() will evaluate the given address, using the hints-flags and port, and return an IP address and other server infos
+        LOG_ERROR("getaddrinfo: %s\n", gai_strerror(status));
+        return -1;
+    }
+
+    //res got filled out by getaddrinfo() for us
+    s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); //creating Socket
+
+    if ((status = connect(s, res->ai_addr, res->ai_addrlen)) != 0) {
+        LOG_ERROR("connect() failed\n");
+        freeaddrinfo(res);
+        return -1;
+    }
+
+    freeaddrinfo(res);
+
+    return s;
+}

src/helpers/get_weekday.c

@@ -0,0 +1,11 @@
+#include <time.h>
+
+#include <helpers.h>
+
+int
+helper_get_weekday(const struct tm *time_struct)
+{
+    int wday_sun_sat = time_struct->tm_wday;
+    int wday_mon_sun = (wday_sun_sat + 6) % 7;
+    return wday_mon_sun;
+}

src/helpers/parse_cli.c

@@ -0,0 +1,54 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <argparse.h>
+#include <config.h>
+#include <logger.h>
+#include <helpers.h>
+
+static const char *const usage[] = {
+    "core [options] [[--] args]",
+    "core [options]",
+    NULL,
+};
+
+void
+helper_parse_cli(int argc, const char **argv, config_t *config)
+{
+    struct argparse_option options[] =
+    {
+        OPT_HELP(),
+        OPT_GROUP("Basic options"),
+        OPT_STRING('c', "config", &config->file, "path to config file", NULL, 0, OPT_NONEG),
+
+        OPT_END(),
+    };
+
+    struct argparse argparse;
+    argparse_init(&argparse, options, usage, 0);
+    argparse_describe(
+            &argparse,
+            "\nA brief description of what the program does and how it works.",
+            "\nAdditional description of the program after the description of the arguments."
+    );
+    argc = argparse_parse(&argparse, argc, argv);
+
+    if(argc == 1)
+    {
+        config->run_type = RUN_TYPE_INVALID;
+        if(strcmp(argv[0], "start") == 0)
+        {
+            config->run_type = RUN_TYPE_START;
+            return;
+        }
+        LOG_FATAL("bad action '%s' given ('start')\n", argv[0]);
+        exit(1);
+    }
+    else
+    {
+        LOG_FATAL("no action given ('start')\n");
+        exit(1);
+    }
+    return;
+}