Initial commit

srcs/main.c

@@ -0,0 +1,100 @@
+#include <main.h>
+
+const char* argp_program_version = "ft_ping 1.0";
+const char* argp_program_bug_address = "<jrathelo@student.42nice.fr>";
+static char doc[] = "Send ICMP ECHO_REQUEST packets to network hosts.\vMandatory or optional arguments to long options "
+                    "are also mandatory or optional for any corresponding short options.\n\nOptions marked with (root "
+                    "only) are available only to superuser.";
+static char args_doc[] = "HOST ...";
+
+static struct argp_option options[] = {
+    {0, 0, 0, 0, "Options valid for all request types:\n"},
+    {"verbose", 'v', 0, 0, "verbose output"},
+    {0},
+};
+
+struct arguments {
+    char* args[1];
+    int verbose;
+};
+
+static error_t parse_opt(int key, char* arg, struct argp_state* state) {
+    struct arguments* arguments = state->input;
+
+    switch (key) {
+        case 'v':
+            arguments->verbose = 1;
+            break;
+        case ARGP_KEY_ARG:
+            if (state->arg_num >= 2)
+                argp_usage(state);
+            arguments->args[state->arg_num] = arg;
+            break;
+        case ARGP_KEY_END:
+            if (state->arg_num < 1)
+                argp_usage(state);
+            break;
+        default:
+            return ARGP_ERR_UNKNOWN;
+    }
+    return 0;
+}
+
+static struct argp argp = {options, parse_opt, args_doc, doc};
+
+static bool stop = false;
+
+void sig_handler(int sig) {
+    if (sig == SIGINT) {
+        stop = true;
+    } else if (sig == SIGALRM) {
+    }
+}
+
+int main(int argc, char** argv) {
+    struct arguments arguments;
+    arguments.verbose = 0;
+    argp_parse(&argp, argc, argv, 0, 0, &arguments);
+
+    int sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
+
+    if (sock < 0) {
+        dprintf(STDERR_FILENO, "%s: socket() failed: %s\n", argv[0], strerror(errno));
+        exit(1);
+    }
+    struct sockaddr_in server;
+    bzero(&server, sizeof(server));
+
+    server.sin_family = AF_INET;
+    if (inet_aton(arguments.args[0], &server.sin_addr) < 1) {
+        dprintf(STDERR_FILENO, "%s: unknown host\n", argv[0]);
+        close(sock);
+        exit(1);
+    }
+
+    server.sin_port = htons(0);
+
+    if (bind(sock, (struct sockaddr*)&server, sizeof(server)) < 0) {
+        close(sock);
+        dprintf(STDERR_FILENO, "%s: bind() failed: %s\n", argv[0], strerror(errno));
+        exit(1);
+    }
+
+    struct sigaction sig_handle;
+
+    sig_handle.sa_handler = sig_handler;
+
+    sigaction(SIGINT, &sig_handle, 0);
+    sigaction(SIGALRM, &sig_handle, 0);
+
+    while (true) {
+
+        if (stop) {
+            break;
+        }
+    }
+    printf("---- %s ping statistics ----\n", arguments.args[0]);
+    // printf("%d packets transmitted, %d packets received, %d%% packet loss\n");
+    // printf("round-trip min/avg/max/stddev = %f/%f/%f/%f ms\n");
+    close(sock);
+}