fix: signal handling for SIGINT, default logs to stdout

httpd/Makefile

@@ -31,8 +31,14 @@ TARGET=httpd
 $(TARGET): $(OBJS)
 	$(CC) -o $@ $(OBJS) $(LDFLAGS) $(LDLIBS) 
 
-check:
-	dash tests/run.sh
+check: $(TARGET)
+	cp $(TARGET) tests/$(TARGET)
+	cd tests
+	python3 -m venv env
+	env/bin/python -m pip install requests
+	env/bin/python -m pip install pytest
+	env/bin/python -m pip install pytest-timeout
+	- env/bin/pytest
 
 debug: CFLAGS += $(CFLAGS_DBG)
 debug: $(OBJS)
@@ -45,5 +51,7 @@ asan: $(OBJS)
 	$(CC) -o $(TARGET) $(OBJS) $(LDFLAGS) $(LDLIBS) 
 
 clean:
+	- pkill -9 $(TARGET)
+	$(RM) tests/$(TARGET) tests/out.log
 	$(RM) $(TARGET)
 	$(RM) $(OBJS)

httpd/src/logger/errors.c

@@ -6,6 +6,7 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "../utils/time/fmt_time.h"
 #include "logs.h"
@@ -16,10 +17,13 @@ static struct logs_config config;
 
 // === Functions
 
-void errlog_init(bool enabled, int logfile_fd)
+void errlog_init(bool enabled, int logfile_fd, struct server_config *serv_cfg)
 {
     config.enabled = enabled;
+    if (logfile_fd == STDOUT_FILENO)
+        config.logfile_fd = STDERR_FILENO;
     config.logfile_fd = logfile_fd;
+    config.server_cfg = serv_cfg;
 }
 
 void print_err()

httpd/src/logger/errors.h

@@ -4,10 +4,12 @@
 #include <stdbool.h>
 #include <stdio.h>
 
+#include "../config/config.h"
+
 /* @brief Initialize the error logging submodule
  * @warning Do not use 'as is', use log_init() instead
  */
-void errlog_init(bool enabled, int logfile_fd);
+void errlog_init(bool enabled, int logfile_fd, struct server_config *serv_cfg);
 
 /* @brief Retrieves the last error with errno and prints the corresponding
  *        error message in the logs and stderr

httpd/src/logger/logs.c

@@ -5,6 +5,7 @@
 #include <fcntl.h>
 #include <stdarg.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #include "../utils/time/fmt_time.h"
 #include "errors.h"
@@ -20,13 +21,21 @@ int log_init(struct config *global_config)
     int return_value = 0;
     config.enabled = global_config->log;
     config.server_cfg = global_config->servers;
-    config.logfile_fd = open(global_config->log_file, O_WRONLY);
-    if (config.logfile_fd <= 0)
+    if (global_config->log_file != NULL)
     {
-        config.enabled = false;
-        return_value = 1;
+        config.logfile_fd = open(global_config->log_file, O_WRONLY);
+        if (config.logfile_fd <= 0)
+        {
+            config.enabled = false;
+            return_value = 1;
+        }
     }
-    errlog_init(config.enabled, config.logfile_fd);
+    else
+    {
+        config.logfile_fd = STDOUT_FILENO;
+    }
+
+    errlog_init(config.enabled, config.logfile_fd, config.server_cfg);
     return return_value;
 }
 

httpd/src/server/server.c

@@ -1,23 +1,30 @@
 // === Definitions
 
-#include <netinet/in.h>
 #define _POSIX_C_SOURCE 200112L
 
 #define BUFFER_SIZE 1024
 
 // === Includes
+#include "server.h"
+
 #include <arpa/inet.h>
 #include <netdb.h>
+#include <signal.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdlib.h>
 #include <sys/socket.h>
 #include <unistd.h>
 
 #include "../http/http.h"
 #include "../logger/errors.h"
-#include "server.h"
+#include "../logger/logs.h"
 // #include "../logger/logs.h"
 
+// === Static variables
+
+int server_socket = 0;
+
 // === Static functions
 
 // Creates and bind the server communication socket
@@ -102,11 +109,26 @@ static void get_ip(struct sockaddr *client_addr, char *res)
     inet_ntop(AF_INET, &ipAddr, res, INET_ADDRSTRLEN);
 }
 
+static void signal_handler(int signal)
+{
+    print_log("signal received: %d", signal);
+    switch (signal)
+    {
+    case SIGINT: {
+        print_log("Stopping server...");
+        stop_server();
+        exit(0);
+    }
+    default:
+        return;
+    }
+}
+
 // === Functions
 
 void start_server(const char *host, const char *port)
 {
-    int server_socket = get_socket(host, port);
+    server_socket = get_socket(host, port);
     if (server_socket == -1)
         // TODO log that
         return;
@@ -115,6 +137,17 @@ void start_server(const char *host, const char *port)
     if (err == -1)
         return;
 
+    // Signal handling
+    struct sigaction siga;
+    siga.sa_flags = 0;
+    siga.sa_handler = signal_handler;
+    // initialize mask
+    if (sigemptyset(&siga.sa_mask) < 0)
+        // TODO log that
+        return;
+    if (sigaction(SIGINT, &siga, NULL) == -1)
+        return;
+
     // Main loop
     while (1)
     {
@@ -134,5 +167,10 @@ void start_server(const char *host, const char *port)
         close(client_fd);
     }
 
+    stop_server();
+}
+
+void stop_server(void)
+{
     close(server_socket);
 }

httpd/src/server/server.h

@@ -3,11 +3,17 @@
 
 // #define _POSIX_C_SOURCE 200112L
 
-/* @brief
+/* @brief Starts the HTTP server
  *
- * @param hpstname
+ * @warn Make sure to initialize modules before calling
+ *
+ * @param hostname
  * @param port
  */
 void start_server(const char *host, const char *port);
 
+/* @brief Stops the currently running HTTP server
+ */
+void stop_server(void);
+
 #endif // ! SERVER_H