From c4f107a1a27dc60858fc694839c981e001cf447f Mon Sep 17 00:00:00 2001
From: Alexander Schmidt <alex@treefish.org>
Date: Sat, 3 Oct 2020 21:21:56 +0200
Subject: [PATCH 1/1] added post command and use fifo dir from env

---
 doc/config.json    |  3 ---
 src/mtxbot-post.py | 40 ++++++++++++++++++++++++++++++++++++++++
 src/mtxbot.py      |  6 ++++--
 3 files changed, 44 insertions(+), 5 deletions(-)
 create mode 100755 src/mtxbot-post.py

diff --git a/doc/config.json b/doc/config.json
index ad3d114..0f08155 100644
--- a/doc/config.json
+++ b/doc/config.json
@@ -3,8 +3,5 @@
         "url": "https://matrix.example.com",
         "user": "@user:matrix.example.com",
         "password": "WHATEVER"
-    },
-    "paths": {
-        "fifodir": "/path/to/fifo/dir"
     }
 }
diff --git a/src/mtxbot-post.py b/src/mtxbot-post.py
new file mode 100755
index 0000000..1ba56c4
--- /dev/null
+++ b/src/mtxbot-post.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+import errno
+import os
+import posix
+import stat
+import sys
+import time
+
+assert sys.version_info >= (3, 5)
+
+if len(sys.argv) != 2:
+    print("Usage: %s <channel>" % sys.argv[0])
+
+fifo_dir = os.getenv('MTXBOT_FIFO_DIR', '/run/mtxbot')
+fifo_path = "%s/%s" % (fifo_dir, sys.argv[1])
+
+if not os.path.isdir(fifo_dir):
+    print("Fifo directory %s does not exist!" % fifo_dir, file=sys.stderr)
+    sys.exit(1)
+
+if not stat.S_ISFIFO( os.stat(fifo_path).st_mode ):
+    print("Channel %s does not exist!" % sys.argv[1], file=sys.stderr)
+    sys.exit(2)
+
+for i in range(0, 10):
+    fifo = -1
+    try:
+        fifo = posix.open(fifo_path, posix.O_WRONLY | posix.O_NONBLOCK)
+        posix.write(fifo, sys.stdin.read().encode())
+        sys.exit(0)
+    except OSError as e:
+        if e.errno == errno.ENXIO:
+            time.sleep(1.0)
+    finally:
+        if fifo != -1:
+            posix.close(fifo)
+
+print("Error posting to channel %s!" % sys.argv[1], file=sys.stderr)
+sys.exit(3)
diff --git a/src/mtxbot.py b/src/mtxbot.py
index d92dcdc..722c8db 100755
--- a/src/mtxbot.py
+++ b/src/mtxbot.py
@@ -61,10 +61,12 @@ if len(sys.argv) != 2:
 with open(sys.argv[1]) as configFile:
     config = json.load(configFile)
 
+fifo_dir = os.getenv('MTXBOT_FIFO_DIR', '/run/mtxbot')
+
 while not stop:
     presences = []
-    for entry in os.listdir(config['paths']['fifodir']):
-        fullpath = "%s/%s" % (config['paths']['fifodir'], entry)
+    for entry in os.listdir(fifo_dir):
+        fullpath = "%s/%s" % (fifo_dir, entry)
         if stat.S_ISFIFO(os.stat(fullpath).st_mode):
             logging.info("Creating presence for %s..." % entry)
             presences.append( Presence(entry, fullpath) )
-- 
2.39.5