From 697a9073501b811da744ad19342a14d7347d1f4a Mon Sep 17 00:00:00 2001
From: Joachim Wiberg <troglobit@gmail.com>
Date: Tue, 11 Jul 2023 19:12:16 +0200
Subject: [PATCH] klinfix: new commands show log [FILE] and follow [FILE]

With completion support.  The log command has an optional last arg,
after FILE, tail NUM, which runs tail -n NUM FILE instead of cat.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
---
 src/klinfix/src/klinfix.c | 34 ++++++++++++++++++++++++++++++++
 src/klinfix/xml/infix.xml | 41 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 75 insertions(+)

diff --git a/src/klinfix/src/klinfix.c b/src/klinfix/src/klinfix.c
index 585a9a81..198e823c 100644
--- a/src/klinfix/src/klinfix.c
+++ b/src/klinfix/src/klinfix.c
@@ -1,5 +1,9 @@
 #include <assert.h>
+#include <dirent.h>
+#include <errno.h>
 #include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
 
 #include <sysrepo.h>
 #include <sysrepo_types.h>
@@ -13,6 +17,35 @@
 const uint8_t kplugin_klinfix_major = 1;
 const uint8_t kplugin_klinfix_minor = 0;
 
+int klix_files(kcontext_t *ctx)
+{
+	const char *path;
+	struct dirent *d;
+	DIR *dir;
+
+	path = kcontext_script(ctx);
+	if (!path) {
+		fprintf(stderr, "Error: missing path argument to file search.\n");
+		return -1;
+	}
+
+	dir = opendir(path);
+	if (!dir) {
+		fprintf(stderr, "Error: %s", strerror(errno));
+		return -1;
+	}
+
+	while ((d = readdir(dir))) {
+		if (d->d_type != DT_REG)
+			continue;
+
+		printf("%s\n", d->d_name);
+	}
+	closedir(dir);
+
+	return 0;
+}
+
 int klix_ds_from_str(const char *text, sr_datastore_t *ds)
 {
 	size_t len = strlen(text);
@@ -219,6 +252,7 @@ int kplugin_klinfix_init(kcontext_t *ctx)
 
 	kplugin_add_syms(plugin, ksym_new("klix_copy", klix_copy));
 	kplugin_add_syms(plugin, ksym_new("klix_commit", klix_commit));
+	kplugin_add_syms(plugin, ksym_new("klix_files", klix_files));
 	kplugin_add_syms(plugin, ksym_new("klix_rpc", klix_rpc));
 
 	return 0;
diff --git a/src/klinfix/xml/infix.xml b/src/klinfix/xml/infix.xml
index ee912fb3..029ed34a 100644
--- a/src/klinfix/xml/infix.xml
+++ b/src/klinfix/xml/infix.xml
@@ -87,6 +87,12 @@
     <ACTION sym="PLINE_INSERT_TO@sysrepo"/>
   </PTYPE>
 
+  <PTYPE name="LOGFILES">
+    <COMPL>
+      <ACTION sym="klix_files@klinfix">/var/log</ACTION>
+    </COMPL>
+    <ACTION sym="STRING"/>
+  </PTYPE>
 
   <VIEW name="main">
     <HOTKEY key="^D" cmd="exit"/>
@@ -220,9 +226,44 @@
 	</SWITCH>
       </COMMAND>
 
+      <COMMAND name="log" help="Show log file, default: syslog">
+	<PARAM name="fn" ptype="/LOGFILES" min="0" help="Optional log file to show"/>
+	<SWITCH name="optional" min="0">
+	  <COMMAND name="tail" help="Show log tail, last N lines only">
+	    <PARAM name="lines" ptype="/UINT" help="Last number of lines to show"/>
+	  </COMMAND>
+	</SWITCH>
+	<ACTION sym="script">
+	  file=${KLISH_PARAM_fn:-syslog}
+	  if [ -n "$KLISH_PARAM_lines" ]; then
+	    tail -n $KLISH_PARAM_lines /log/$file
+	  else
+	    cat /log/$file
+	  fi
+	</ACTION>
+      </COMMAND>
+
+      <COMMAND name="factory-config" help="Show factory-config">
+	<ACTION sym="script">cat /cfg/factory-config.cfg | jq .</ACTION>
+      </COMMAND>
+
       <COMMAND name="running-config" help="Show running-config">
+	<!-- TODO: add PARAM for xml/json output, and coloring like factory -->
 	<ACTION sym="srp_show_running@sysrepo"/>
       </COMMAND>
+
+      <COMMAND name="startup-config" help="Show startup-config">
+	<ACTION sym="script">cat /cfg/startup-config.cfg | jq .</ACTION>
+      </COMMAND>
+    </COMMAND>
+
+    <COMMAND name="follow" help="Monitor a log file, use Ctrl-C to abort">
+      <PARAM name="fn" ptype="/LOGFILES" help="Optional log file to monitor, default: syslog"/>
+      <ACTION sym="script" interactive="true">
+	file=${KLISH_PARAM_fn:-syslog}
+	echo -e "\e[1mPress Ctrl-C to abort ────────────────────────────────────────────\e[0m"
+	tail -F /log/$file
+      </ACTION>
     </COMMAND>
 
   </VIEW>