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From 03216ccf4ca0808f9c7b9513efcaeb7f4058b575 Mon Sep 17 00:00:00 2001
From: Akira TAGOH <akira@tagoh.org>
Date: Wed, 10 Apr 2013 09:41:22 +0000
Subject: Bug 63329 - make check fails: .. contents:: :depth: 2
Add back FcHashGetSHA256DigestFromFile() and fall back to it
when font isn't SFNT-based font because FT_Load_Sfnt_Table
fails with FT_Err_Invalid_Face_Handle.
---
diff --git a/src/fcfreetype.c b/src/fcfreetype.c
index 22064b3..5e8990d 100644
--- a/src/fcfreetype.c
+++ b/src/fcfreetype.c
@@ -1666,17 +1666,29 @@ FcFreeTypeQueryFace (const FT_Face face,
goto bail1;
err = FT_Load_Sfnt_Table (face, 0, 0, NULL, &len);
- if (err != FT_Err_Ok)
- goto bail1;
- alen = (len + 63) & ~63;
- fontdata = malloc (alen);
- if (!fontdata)
- goto bail1;
- err = FT_Load_Sfnt_Table (face, 0, 0, (FT_Byte *)fontdata, &len);
- if (err != FT_Err_Ok)
+ if (err == FT_Err_Ok)
+ {
+ alen = (len + 63) & ~63;
+ fontdata = malloc (alen);
+ if (!fontdata)
+ goto bail1;
+ err = FT_Load_Sfnt_Table (face, 0, 0, (FT_Byte *)fontdata, &len);
+ if (err != FT_Err_Ok)
+ goto bail1;
+ memset (&fontdata[len], 0, alen - len);
+ hashstr = FcHashGetSHA256DigestFromMemory (fontdata, len);
+ }
+ else if (err == FT_Err_Invalid_Face_Handle)
+ {
+ /* font may not support SFNT. falling back to
+ * read the font data from file directly
+ */
+ hashstr = FcHashGetSHA256DigestFromFile (file);
+ }
+ else
+ {
goto bail1;
- memset (&fontdata[len], 0, alen - len);
- hashstr = FcHashGetSHA256DigestFromMemory (fontdata, len);
+ }
if (!hashstr)
goto bail1;
if (!FcPatternAddString (pat, FC_HASH, hashstr))
diff --git a/src/fchash.c b/src/fchash.c
index 1ef1e16..92585a6 100644
--- a/src/fchash.c
+++ b/src/fchash.c
@@ -204,6 +204,68 @@ FcHashGetSHA256Digest (const FcChar8 *input_strings,
}
FcChar8 *
+FcHashGetSHA256DigestFromFile (const FcChar8 *filename)
+{
+ FILE *fp = fopen ((const char *)filename, "rb");
+ char ibuf[64];
+ FcChar32 *ret;
+ size_t len;
+ struct stat st;
+
+ if (!fp)
+ return NULL;
+
+ if (FcStat (filename, &st))
+ goto bail0;
+
+ ret = FcHashInitSHA256Digest ();
+ if (!ret)
+ goto bail0;
+
+ while (!feof (fp))
+ {
+ if ((len = fread (ibuf, sizeof (char), 64, fp)) < 64)
+ {
+ long v;
+
+ /* add a padding */
+ memset (&ibuf[len], 0, 64 - len);
+ ibuf[len] = 0x80;
+ if ((64 - len) < 9)
+ {
+ /* process a block once */
+ FcHashComputeSHA256Digest (ret, ibuf);
+ memset (ibuf, 0, 64);
+ }
+ /* set input size at the end */
+ v = (long)st.st_size * 8;
+ ibuf[63 - 0] = v & 0xff;
+ ibuf[63 - 1] = (v >> 8) & 0xff;
+ ibuf[63 - 2] = (v >> 16) & 0xff;
+ ibuf[63 - 3] = (v >> 24) & 0xff;
+ ibuf[63 - 4] = (v >> 32) & 0xff;
+ ibuf[63 - 5] = (v >> 40) & 0xff;
+ ibuf[63 - 6] = (v >> 48) & 0xff;
+ ibuf[63 - 7] = (v >> 56) & 0xff;
+ FcHashComputeSHA256Digest (ret, ibuf);
+ break;
+ }
+ else
+ {
+ FcHashComputeSHA256Digest (ret, ibuf);
+ }
+ }
+ fclose (fp);
+
+ return FcHashSHA256ToString (ret);
+
+bail0:
+ fclose (fp);
+
+ return NULL;
+}
+
+FcChar8 *
FcHashGetSHA256DigestFromMemory (const char *fontdata,
size_t length)
{
diff --git a/src/fcint.h b/src/fcint.h
index a662dbf..8919958 100644
--- a/src/fcint.h
+++ b/src/fcint.h
@@ -818,6 +818,10 @@ FcFontSetSerialize (FcSerialize *serialize, const FcFontSet * s);
FcPrivate FcChar8 *
FcHashGetSHA256Digest (const FcChar8 *input_strings,
size_t len);
+
+FcPrivate FcChar8 *
+FcHashGetSHA256DigestFromFile (const FcChar8 *filename);
+
FcPrivate FcChar8 *
FcHashGetSHA256DigestFromMemory (const char *fontdata,
size_t length);
--
cgit v0.9.0.2-2-gbebe
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