Added first functionality to client

src/client.c

@@ -1,3 +1,190 @@
-int main() {
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <api.h>
+
+#define UNIX_PATH_MAX 256
+#define MAXARGLENGTH 256
+
+static char globalSocket[UNIX_PATH_MAX] = "";
+
+
+
+// struttura della lista dei comandi
+typedef struct cmd_s {
+    char name;           // nome del comando
+    char *arg;           // (eventuale) argomento del comando
+    struct cmd_s *next;  // puntatore al prossimo comando nella lista
+} cmd_t;
+
+// struttura dati per il comando -w
+typedef struct cmdw_s {
+    char *dir;
+    int print;
+    int tot;
+    int curn;
+} cmdw_t;
+
+// -----------------------------------------------------------------------------
+// helper functions
+
+// libera la memoria della lista dei comandi
+void destroyCommandList(cmd_t *l);
+// aggiunge un comando alla lista
+int addCommand(cmd_t **l, char cmd, char *arg);
+
+// per chiudere la connessione prima dell'uscita
+void cleanup() {
+    if (strncmp(globalSocket, "", 1) != 0) {
+	closeConnection(globalSocket);
+    }
+}
+
+// -h
+static void usage(const char *argv0) {
+    // TODO change this
+    fprintf(stdout, "use: %s <config file location>\n", argv0);
+}
+
+// -----------------------------------------------------------------------------
+// MAIN
+int main(int argc, char* argv[]) {
+    atexit(cleanup);
+
+    if(argc <= 1) { // no arguments => -h
+	usage(argv[0]);
+	return 0;
+    }
+
+
+    struct sigaction siga;
+    // ignoro il segnale SIGPIPE
+    memset(&siga, 0, sizeof(siga));
+    siga.sa_handler = SIG_IGN;
+    if (sigaction(SIGPIPE, &siga, NULL) == -1) {
+	perror("sigaction.\n");
+	return 1;
+    }
+
+    // lista dei comandi
+    cmd_t *cmds = NULL;
+    cmds = calloc(1, sizeof(cmd_t));
+    // struttra per -w
+    cmdw_t *cmdw = NULL;
+
+    int opt;
+    char args[MAXARGLENGTH];
+
+    char f = 0;
+
+    // add args to list
+    while ((opt = getopt(argc, argv, ":hpf:t:w:W:D:r:R:d:l:u:c:")) != -1) {
+	switch (opt) {
+	case 'h': // help message
+	    usage(argv[0]);
+	    goto _cleanup;
+	case 'f': // socket name
+	    if(!f) {
+		if (optarg && strnlen(optarg, MAXARGLENGTH) > 0 && optarg[0] == '-') {
+		    fprintf(stderr, "Il comando -f necessita di un argomento.\n");
+		    goto _cleanup;
+		}
+		memset(args, 0, MAXARGLENGTH);
+		strncpy(args, optarg, strnlen(optarg, MAXARGLENGTH-1)+1);
+		addCommand(&cmds, opt, optarg);
+		++f;
+	    }
+	    break;
+	case 'p': // print to stdout
+	    printInfo(1);
+	    break;
+	case 'w': // send files from folder (n is specified after)
+	    if (optarg && strnlen(optarg, MAXARGLENGTH) > 0 && optarg[0] == '-') {
+		fprintf(stderr, "Il comando -w necessita di un argomento.\n");
+		goto _cleanup;
+	    }
+	    if(!cmdw) {
+		cmdw = calloc(1, sizeof(cmdw_t));
+		if(!cmdw) {
+		    perror("calloc");
+		    goto _cleanup;
+		}
+	    }
+	    memset(args, 0, MAXARGLENGTH);
+	    strncpy(args, optarg, strnlen(optarg, MAXARGLENGTH-1)+1);
+	    addCommand(&cmds, opt, args);
+	    break;
+	}
+    }
+
+
+    return 0;
+
+_cleanup:
+    if(cmds) {
+	destroyCommandList(cmds);
+    }
+    return 0;
+}
+
+// -----------------------------------------------------------------------------
+void destroyCommandList(cmd_t *l) {
+    if (!l) {
+	errno = EINVAL;
+	return;
+    }
+
+    cmd_t *tmp;
+    // scorro tutta la lista e libero la memoria
+    while (l) {
+	tmp = l;
+
+	free(l->arg);
+	l = l->next;
+
+	free(tmp);
+    }
+}
+
+int addCommand(cmd_t **l, char cmd, char *arg) {
+    if(!l) {
+	errno = EINVAL;
+	return -1;
+    }
+
+    cmd_t *new = calloc(1, sizeof(cmd_t));
+    if(!new) {
+	perror("calloc");
+	return -1;
+    }
+    new->name = cmd;
+
+    if (arg) {
+	new->arg = malloc(MAXARGLENGTH);
+	if (new->arg == NULL) {
+	    perror("malloc arg");
+	    free(new);
+	    return -1;
+	}
+	strncpy(new->arg, arg, strnlen(arg, MAXARGLENGTH-1)+1);
+    }
+    new->next = NULL;
+    cmd_t *tail = *l;
+
+    // se lista vuota aggiungo in cima, altrimenti scorro la lista
+    if (*l == NULL) {
+	*l = new;
+	return 0;
+    }
+
+    while (tail->next) {
+	tail = tail->next;
+    }
+
+    tail->next = new;
     return 0;
 }