1 files changed, 100 insertions, 0 deletions
diff --git a/client/libacron/apps/acronc/config.c b/client/libacron/apps/acronc/config.c
new file mode 100644
index 0000000..046d931
--- /dev/null
+++ b/client/libacron/apps/acronc/config.c
@@ -0,0 +1,100 @@
+/*
+ * Created by yuuta on 7/24/22.
+ */
+
+#include "config.h"
+
+#include <libac.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+int config_parse(const int argc, const char **argv, ac_connection_parameters_t *params) {
+    if (argc <= 1) {
+        fprintf(stderr, "Usage: %s [-t token] [-p port] <ID>@<server>\n"
+                        "Please refer to acronc(1) for more details.\n",
+                argv[0] ? "acronc" : argv[0]);
+        return 64;
+    }
+    bool svr_set = false;
+    for (int i = 1; i < argc; i++) {
+        const char *arg = argv[i];
+        if (arg[0] != '-') {
+            if (svr_set) {
+                fprintf(stderr, "Unexpected value: %s\n", arg);
+                return 64;
+            }
+            const char *id = strtok((char *) arg, "@");
+            if (!id) {
+                fprintf(stderr, "Malformed argument: should be ID@server.\n");
+                return 64;
+            }
+            const char *server = strtok(NULL, "");
+            if (!server) {
+                fprintf(stderr, "Malformed argument: should be ID@server.\n");
+                return 64;
+            }
+            params->host = (char *) server;
+            params->id = (char *) id;
+            svr_set = true;
+            continue;
+        }
+        char a = arg[1];
+        char **value_ptr;
+        char *port_str = NULL;
+        switch (a) {
+            case 't': {
+                value_ptr = &params->token;
+                goto read_value;
+            }
+            case 'p': {
+                value_ptr = &port_str;
+                goto read_value;
+            }
+            default: {
+                fprintf(stderr, "Unexpected switch -%c.\n", a);
+                return 64;
+            }
+        }
+        read_value:
+        {
+            if (i == (argc - 1)) {
+                fprintf(stderr, "-%c requires an argument.\n", a);
+                return 64;
+            }
+            *value_ptr = (char *) argv[++i];
+        }
+        if (port_str) {
+            errno = 0;
+            char *endptr;
+            unsigned long val = strtol(port_str, &endptr, 0);
+            if (errno) {
+                const int e = errno;
+                fprintf(stderr, "Cannot parse port: %s", strerror(e));
+                return e;
+            }
+            if (endptr == port_str) {
+                fprintf(stderr, "Illegal port.\n");
+                return 64;
+            }
+            if (val > UINT16_MAX) {
+                fprintf(stderr, "Illegal port.\n");
+                return 64;
+            }
+            params->port = (uint16_t) val;
+            port_str = NULL;
+        }
+    }
+    if (!params->host || !params->id) {
+        fprintf(stderr, "Usage: acronc ID@server[:port]\n");
+        return 64;
+    }
+    char tok[1024];
+    if (!params->token) {
+        printf("Token: ");
+        scanf("%1023[^\n]", tok);
+        params->token = tok;
+    }
+    return 0;
+}
+\ No newline at end of file