From: Uwe Hermann <redacted>
Date: Mon, 28 May 2012 22:21:21 +0000 (+0200)
Subject: sr: la8 in: Files must be exactly 8388613 bytes.
X-Git-Tag: libsigrok-0.1.1~15
X-Git-Url: http://sigrok.org/gitweb/?a=commitdiff_plain;h=3217b032053d6eb89ca31b01968715813bcbe1bb;p=libsigrok.git

sr: la8 in: Files must be exactly 8388613 bytes.

All ChronoVu LA8 files (*.kdt extension usually) are exactly 8388613
bytes in size (8MB + 5 bytes). Check this, when trying to autodetect the
file format, to reduce the likelihood of 'chronovu-la8' being
autodetected on all binary files (instead of 'binary').
---

diff --git a/input/chronovu_la8.c b/input/chronovu_la8.c
index 23a8dc09..f0a1a071 100644
--- a/input/chronovu_la8.c
+++ b/input/chronovu_la8.c
@@ -49,6 +49,9 @@ static uint64_t divcount_to_samplerate(uint8_t divcount)
 
 static int format_match(const char *filename)
 {
+	struct stat stat_buf;
+	int ret;
+
 	if (!filename) {
 		sr_err("la8 in: %s: filename was NULL", __func__);
 		// return SR_ERR; /* FIXME */
@@ -69,7 +72,19 @@ static int format_match(const char *filename)
 		return FALSE;
 	}
 
-	/* TODO: Only accept files of length 8MB + 5 bytes. */
+	/* Only accept files of length 8MB + 5 bytes. */
+	ret = stat(filename, &stat_buf);
+	if (ret != 0) {
+		sr_err("la8 in: %s: Error getting file size of '%s'",
+		       __func__, filename);
+		return FALSE;
+	}
+	if (stat_buf.st_size != (8 * 1024 * 1024 + 5)) {
+		sr_dbg("la8 in: %s: File size must be exactly 8388613 bytes ("
+		       "it actually is %d bytes in size), so this is not a "
+		       "ChronoVu LA8 file.", __func__, stat_buf.st_size);
+		return FALSE;
+	}
 
 	/* TODO: Check for divcount != 0xff. */