board/coredump: add option to use base64 stream

Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com>

boards/Kconfig

@@ -4666,6 +4666,13 @@ config BOARD_COREDUMP_COMPRESSION
 	---help---
 		Enable LZF compression algorithm for core dump content
 
+config BOARD_COREDUMP_BASE64STREAM
+	bool "Enable base64 encoding for output stream"
+	default n
+	depends on BOARD_COREDUMP_SYSLOG
+	---help---
+		Enable based64 encoded stream instead of default hexstream.
+
 config BOARD_ENTROPY_POOL
 	bool "Enable Board level storing of entropy pool structure"
 	default n
@@ -4890,4 +4897,3 @@ config BOARD_MEMORY_RANGE
 		end: end address of memory range
 		flags: Readable 0x1, writable 0x2, executable 0x4
 		example:0x1000,0x2000,0x1,0x2000,0x3000,0x3,0x3000,0x4000,0x7
-

sched/misc/coredump.c

@@ -39,7 +39,11 @@ static struct lib_lzfoutstream_s  g_lzfstream;
 
 #ifdef CONFIG_BOARD_COREDUMP_SYSLOG
 static struct lib_syslogstream_s  g_syslogstream;
+#  ifdef CONFIG_BOARD_COREDUMP_BASE64STREAM
+static struct lib_base64outstream_s g_base64stream;
+#  else
 static struct lib_hexdumpstream_s g_hexstream;
+#  endif
 #endif
 
 #ifdef CONFIG_BOARD_COREDUMP_BLKDEV
@@ -65,6 +69,7 @@ static const struct memory_region_s *g_regions;
 static void coredump_dump_syslog(pid_t pid)
 {
   FAR void *stream;
+  FAR const char *streamname;
   int logmask;
 
   logmask = setlogmask(LOG_ALERT);
@@ -75,8 +80,16 @@ static void coredump_dump_syslog(pid_t pid)
 
   lib_syslogstream(&g_syslogstream, LOG_EMERG);
   stream = &g_syslogstream;
+#ifdef CONFIG_BOARD_COREDUMP_BASE64STREAM
+  lib_base64outstream(&g_base64stream, stream);
+  stream = &g_base64stream;
+  streamname = "base64";
+#else
   lib_hexdumpstream(&g_hexstream, stream);
   stream = &g_hexstream;
+  streamname = "hex";
+#endif
+
 #  ifdef CONFIG_BOARD_COREDUMP_COMPRESSION
 
   /* Initialize LZF compression stream */
@@ -90,9 +103,10 @@ static void coredump_dump_syslog(pid_t pid)
   core_dump(g_regions, stream, pid);
 
 #  ifdef CONFIG_BOARD_COREDUMP_COMPRESSION
-  _alert("Finish coredump (Compression Enabled).\n");
+  _alert("Finish coredump (Compression Enabled). %s formatted\n",
+         streamname);
 #  else
-  _alert("Finish coredump.\n");
+  _alert("Finish coredump. %s formatted\n", streamname);
 #  endif
 
   setlogmask(logmask);

tools/coredump.py

@@ -22,6 +22,7 @@
 ############################################################################
 
 import argparse
+import base64
 import binascii
 import os
 import struct
@@ -69,6 +70,20 @@ def unhexlify(infile, outfile):
         outfile.write(binascii.unhexlify(line))
 
 
+def unbase64file(infile, outfile):
+    input = ""
+    for line in infile.readlines():
+        line = line.strip()
+        if line == "":
+            break
+        index = line.rfind(" ")
+        if index > 0:
+            line = line[index + 1 :]
+
+        input += line
+    outfile.write(base64.b64decode(input))
+
+
 def parse_args():
     global args
     parser = argparse.ArgumentParser(
@@ -78,6 +93,12 @@ def parse_args():
     )
     parser.add_argument("input")
     parser.add_argument("-o", "--output", help="Output file in hex.")
+    parser.add_argument(
+        "--base64",
+        action="store_true",
+        default=False,
+        help="Set when input file is base64 encoded.",
+    )
     args = parser.parse_args()
 
 
@@ -94,7 +115,10 @@ def main():
     infile = open(args.input, "r")
     tmpfile = open(tmp, "wb+")
 
-    unhexlify(infile, tmpfile)
+    if args.base64:
+        unbase64file(infile, tmpfile)
+    else:
+        unhexlify(infile, tmpfile)
 
     infile.close()