From 6d51d26faebae113af72d95913e2c864b4cade3f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Mon, 31 Mar 2014 08:57:28 -0400
Subject: [PATCH] journal: fix export of messages containing newlines

In "export" format, newlines are significant, and messages containing
newlines must be exported as "binary".

(cherry picked from commit 0ade5ffe2778e7b238bba8d979ca4d53dee1e702)
(cherry picked from commit 0fa79586f73bddf872b8e3bb5af4c9926cb84d41)
---
 src/shared/logs-show.c | 7 ++++---
 src/shared/utf8.c      | 5 +++--
 src/shared/utf8.h      | 5 ++++-
 3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/shared/logs-show.c b/src/shared/logs-show.c
index 91eefb3..00e6d11 100644
--- a/src/shared/logs-show.c
+++ b/src/shared/logs-show.c
@@ -544,7 +544,9 @@ static int output_export(
                     startswith(data, "_BOOT_ID="))
                         continue;
 
-                if (!utf8_is_printable(data, length)) {
+                if (utf8_is_printable_newline(data, length, false))
+                        fwrite(data, length, 1, f);
+                else {
                         const char *c;
                         uint64_t le64;
 
@@ -559,8 +561,7 @@ static int output_export(
                         le64 = htole64(length - (c - (const char*) data) - 1);
                         fwrite(&le64, sizeof(le64), 1, f);
                         fwrite(c + 1, length - (c - (const char*) data) - 1, 1, f);
-                } else
-                        fwrite(data, length, 1, f);
+                }
 
                 fputc('\n', f);
         }
diff --git a/src/shared/utf8.c b/src/shared/utf8.c
index 2b70d45..15605e6 100644
--- a/src/shared/utf8.c
+++ b/src/shared/utf8.c
@@ -136,7 +136,7 @@ static int utf8_encoded_to_unichar(const char *str) {
         return unichar;
 }
 
-bool utf8_is_printable(const char* str, size_t length) {
+bool utf8_is_printable_newline(const char* str, size_t length, bool newline) {
         const uint8_t *p;
 
         assert(str);
@@ -145,7 +145,8 @@ bool utf8_is_printable(const char* str, size_t length) {
                 int encoded_len = utf8_encoded_valid_unichar((const char *)p);
                 int val = utf8_encoded_to_unichar((const char*)p);
 
-                if (encoded_len < 0 || val < 0 || is_unicode_control(val))
+                if (encoded_len < 0 || val < 0 || is_unicode_control(val) ||
+                    (!newline && val == '\n'))
                         return false;
 
                 length -= encoded_len;
diff --git a/src/shared/utf8.h b/src/shared/utf8.h
index f93dfb8..b14709a 100644
--- a/src/shared/utf8.h
+++ b/src/shared/utf8.h
@@ -31,7 +31,10 @@ const char *utf8_is_valid(const char *s) _pure_;
 char *ascii_is_valid(const char *s) _pure_;
 char *utf8_escape_invalid(const char *s);
 
-bool utf8_is_printable(const char* str, size_t length) _pure_;
+bool utf8_is_printable_newline(const char* str, size_t length, bool newline) _pure_;
+_pure_ static inline bool utf8_is_printable(const char* str, size_t length) {
+        return utf8_is_printable_newline(str, length, true);
+}
 
 char *ascii_filter(const char *s);