From 0d706ae72ceefd74053ad6cb0900ecce6cf1f085 Mon Sep 17 00:00:00 2001
From: auric <auric@japegames.com>
Date: Sat, 21 Feb 2026 11:08:36 -0600
Subject: Add Umbrella 0.1.5

---
 src/umbrella.h | 121 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/umbrella.h

(limited to 'src/umbrella.h')

diff --git a/src/umbrella.h b/src/umbrella.h
new file mode 100644
index 0000000..e44d626
--- /dev/null
+++ b/src/umbrella.h
@@ -0,0 +1,121 @@
+#ifndef UMBRELLA_H
+#define UMBRELLA_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+/* ── Version ─────────────────────────────────────────────────────────────── */
+#define UMBRELLA_VERSION "0.1.0"
+
+/* ── Paths ───────────────────────────────────────────────────────────────── */
+#define UMBRELLA_CONF_DIR   "/etc/umbrella"
+#define UMBRELLA_UNITS_DIR  "/etc/umbrella/units"
+#define UMBRELLA_CONF_FILE  "/etc/umbrella/umbrella.conf"
+#define UMBRELLA_SOCK_PATH  "/run/umbrella/umbrella.sock"
+#define UMBRELLA_PID_FILE   "/run/umbrella/umbrella.pid"
+#define UMBRELLA_LOG_FILE   "/var/log/umbrella/umbrella.log"
+
+/* ── Limits ──────────────────────────────────────────────────────────────── */
+#define MAX_UNITS           64
+#define MAX_CLIENTS         32
+#define MAX_NAME            64
+#define MAX_PATH            256
+#define MAX_DISPLAY         128
+#define MAX_ACTIONS         16
+#define RING_BUF_LINES      500     /* output lines buffered per unit */
+#define RING_BUF_LINE_MAX   1024    /* max bytes per buffered line */
+#define PROTO_MAX_MSG       65536   /* max wire message size */
+
+/* ── Console types ───────────────────────────────────────────────────────── */
+typedef enum {
+    CONSOLE_RCON  = 0,
+    CONSOLE_STDIN = 1,
+} ConsoleType;
+
+/* ── Health check types ──────────────────────────────────────────────────── */
+typedef enum {
+    HEALTH_A2S = 0,
+    HEALTH_TCP = 1,
+    HEALTH_NONE = 2,
+} HealthType;
+
+/* ── Process state ───────────────────────────────────────────────────────── */
+typedef enum {
+    STATE_STOPPED  = 0,
+    STATE_STARTING = 1,
+    STATE_RUNNING  = 2,
+    STATE_CRASHED  = 3,
+} ProcessState;
+
+/* ── Action: a named script ──────────────────────────────────────────────── */
+typedef struct {
+    char name[MAX_NAME];
+    char script[MAX_PATH];
+} Action;
+
+/* ── Console config ──────────────────────────────────────────────────────── */
+typedef struct {
+    ConsoleType type;
+    char host[64];
+    uint16_t port;
+    char password[128];     /* RCON password; empty for stdin */
+    char password_env[64];  /* env var name to read password from */
+} ConsoleConfig;
+
+/* ── Health config ───────────────────────────────────────────────────────── */
+typedef struct {
+    HealthType type;
+    char host[64];
+    uint16_t port;
+    int timeout_ms;
+} HealthConfig;
+
+/* ── Ring buffer: circular store of recent output lines ──────────────────── */
+typedef struct {
+    char lines[RING_BUF_LINES][RING_BUF_LINE_MAX];
+    int head;   /* next write position */
+    int count;  /* how many lines are valid */
+} RingBuffer;
+
+/* ── Unit: a loaded descriptor ───────────────────────────────────────────── */
+typedef struct {
+    char name[MAX_NAME];
+    char display[MAX_DISPLAY];
+    char service[MAX_NAME];     /* systemd unit name, informational */
+    ConsoleConfig console;
+    HealthConfig health;
+    char log_paths[4][MAX_PATH];
+    int log_count;
+    Action actions[MAX_ACTIONS];
+    int action_count;
+
+    /* Runtime state (populated by process/rcon layer, not yaml) */
+    ProcessState state;
+    pid_t pid;                  /* only for CONSOLE_STDIN */
+    int stdin_fd;               /* only for CONSOLE_STDIN */
+    int stdout_fd;              /* only for CONSOLE_STDIN */
+    RingBuffer *output;
+} Unit;
+
+/* ── Client: a connected socket client ───────────────────────────────────── */
+typedef struct {
+    int fd;
+    char attached[MAX_NAME];    /* unit name, or empty if not attached */
+    int uid;                    /* peer uid from SO_PEERCRED */
+} Client;
+
+/* ── Global daemon state ─────────────────────────────────────────────────── */
+typedef struct {
+    Unit    units[MAX_UNITS];
+    int     unit_count;
+    Client  clients[MAX_CLIENTS];
+    int     client_count;
+    int     epoll_fd;
+    int     listen_fd;
+    int     signal_fd;
+    int     running;
+} Daemon;
+
+extern Daemon g;
+
+#endif /* UMBRELLA_H */
-- 
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