"It's not a valid text line" means "it's not an RFC 7468 file", not "it's bad".

Don't return an error unless we get a read error.  If the line could be
read, but isn't a valid text line, that just means it's not an RFC 7468
text file.

Change-Id: I04f48294cac213cf61b8dcb851b99dc6dd776df8
Reviewed-on: https://code.wireshark.org/review/29039
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 3 insertions, 5 deletions

diff --git a/wiretap/rfc7468.c b/wiretap/rfc7468.c
index 08b5a35e33..3d7cb56b82 100644
--- a/wiretap/rfc7468.c
+++ b/wiretap/rfc7468.c
@@ -67,14 +67,12 @@ static char *read_complete_text_line(char line[MAX_LINE_LENGTH], FILE_T fh, int
     }
 
     if (strlen(line) != (size_t)(line_end - line)) {
-        *err = WTAP_ERR_BAD_FILE;
-        *err_info = g_strdup("unexpected NUL inside a line");
+        *err = 0;
         return NULL;
     }
 
     if (line_end[-1] != '\n' && !file_eof(fh)) {
-        *err = WTAP_ERR_BAD_FILE;
-        *err_info = g_strdup("overlong line");
+        *err = 0;
         return NULL;
     }
 
@@ -132,7 +130,7 @@ wtap_open_return_val rfc7468_open(wtap *wth, int *err, gchar **err_info)
     found_preeb = FALSE;
     for (unsigned int i = 0; i < MAX_EXPLANATORY_TEXT_LINES; i++) {
         if (!read_complete_text_line(line, wth->fh, err, err_info)) {
-            if (*err == WTAP_ERR_SHORT_READ)
+            if (*err == 0 || *err == WTAP_ERR_SHORT_READ)
                 return WTAP_OPEN_NOT_MINE;
             return WTAP_OPEN_ERROR;
         }