First Commit

1 files changed, 56 insertions, 0 deletions

diff --git a/environ.c b/environ.c
new file mode 100644
index 0000000..821514f
--- /dev/null
+++ b/environ.c
@@ -0,0 +1,56 @@
+#include "environ.h"
+#include "common.h"
+
+#include <sysexits.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <string.h>
+
+int environ_read(Environ *out)
+{
+	out->tg_api = getenv("TG_API");
+	out->tg_chat_raw = getenv("TG_CHAT");
+	char *tg_admin_raw = getenv("TG_ADMIN");
+	out->tg_link_fmt = getenv("TG_LINK_FMT");
+	out->rcon_host = getenv("RCON_HOST");
+	out->rcon_port = getenv("RCON_PORT");
+	out->rcon_passwd = getenv("RCON_PASSWD");
+	if(out->tg_api == NULL ||
+			tg_admin_raw == NULL ||
+			out->tg_chat_raw == NULL ||
+			out->tg_link_fmt == NULL ||
+			out->rcon_host == NULL ||
+			out->rcon_port == NULL)
+	{
+		fprintf(stderr, _("Required environment variables are missing.\n"));
+		return EX_USAGE;
+	}
+	char *endptr;
+	intmax_t num = strtoimax(out->tg_chat_raw, &endptr, 10);
+	if(strcmp(endptr, "") || (num == INTMAX_MAX && errno == ERANGE))
+	{
+		fprintf(stderr, _("TG_CHAT is invalid\n"));
+		return EX_USAGE;
+	}
+	if(num > INT64_MAX || num < INT64_MIN)
+	{
+		fprintf(stderr, _("TG_CHAT is invalid\n"));
+		return EX_USAGE;
+	}
+	out->tg_chat = (int64_t)num;
+	uintmax_t unum = strtoumax(tg_admin_raw, &endptr, 10);
+	if(strcmp(endptr, "") || (unum == UINTMAX_MAX && errno == ERANGE))
+	{
+		fprintf(stderr, _("TG_ADMIN is invalid\n"));
+		return EX_USAGE;
+	}
+	if(unum > UINT32_MAX || unum < 0)
+	{
+		fprintf(stderr, _("TG_ADMIN is invalid\n"));
+		return EX_USAGE;
+	}
+	out->tg_admin = (uint32_t)unum;
+	return 0;
+}