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-rw-r--r--src/fc/fserve.c44
1 files changed, 38 insertions, 6 deletions
diff --git a/src/fc/fserve.c b/src/fc/fserve.c
index aa9acdb..f08028f 100644
--- a/src/fc/fserve.c
+++ b/src/fc/fserve.c
@@ -91,6 +91,12 @@ in this Software without prior written authorization from The Open Group.
(pci)->descent || \
(pci)->characterWidth)
+/*
+ * SIZEOF(r) is in bytes, length fields in the protocol are in 32-bit words,
+ * so this converts for doing size comparisons.
+ */
+#define LENGTHOF(r) (SIZEOF(r) >> 2)
+
extern void ErrorF(const char *f, ...);
static int fs_read_glyphs ( FontPathElementPtr fpe, FSBlockDataPtr blockrec );
@@ -206,9 +212,22 @@ _fs_add_rep_log (FSFpePtr conn, fsGenericReply *rep)
rep->sequenceNumber,
conn->reqbuffer[i].opcode);
}
+
+#define _fs_reply_failed(rep, name, op) do { \
+ if (rep) { \
+ if (rep->type == FS_Error) \
+ fprintf (stderr, "Error: %d Request: %s\n", \
+ ((fsError *)rep)->request, #name); \
+ else \
+ fprintf (stderr, "Bad Length for %s Reply: %d %s %d\n", \
+ #name, rep->length, op, LENGTHOF(name)); \
+ } \
+} while (0)
+
#else
#define _fs_add_req_log(conn,op) ((conn)->current_seq++)
#define _fs_add_rep_log(conn,rep)
+#define _fs_reply_failed(rep,name,op)
#endif
static Bool
@@ -682,13 +701,15 @@ fs_read_open_font(FontPathElementPtr fpe, FSBlockDataPtr blockrec)
int ret;
rep = (fsOpenBitmapFontReply *) fs_get_reply (conn, &ret);
- if (!rep || rep->type == FS_Error)
+ if (!rep || rep->type == FS_Error ||
+ (rep->length != LENGTHOF(fsOpenBitmapFontReply)))
{
if (ret == FSIO_BLOCK)
return StillWorking;
if (rep)
_fs_done_read (conn, rep->length << 2);
fs_cleanup_bfont (bfont);
+ _fs_reply_failed (rep, fsOpenBitmapFontReply, "!=");
return BadFontName;
}
@@ -824,13 +845,15 @@ fs_read_query_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec)
int ret;
rep = (fsQueryXInfoReply *) fs_get_reply (conn, &ret);
- if (!rep || rep->type == FS_Error)
+ if (!rep || rep->type == FS_Error ||
+ (rep->length < LENGTHOF(fsQueryXInfoReply)))
{
if (ret == FSIO_BLOCK)
return StillWorking;
if (rep)
_fs_done_read (conn, rep->length << 2);
fs_cleanup_bfont (bfont);
+ _fs_reply_failed (rep, fsQueryXInfoReply, "<");
return BadFontName;
}
@@ -951,13 +974,15 @@ fs_read_extent_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec)
FontInfoRec *fi = &bfont->pfont->info;
rep = (fsQueryXExtents16Reply *) fs_get_reply (conn, &ret);
- if (!rep || rep->type == FS_Error)
+ if (!rep || rep->type == FS_Error ||
+ (rep->length < LENGTHOF(fsQueryXExtents16Reply)))
{
if (ret == FSIO_BLOCK)
return StillWorking;
if (rep)
_fs_done_read (conn, rep->length << 2);
fs_cleanup_bfont (bfont);
+ _fs_reply_failed (rep, fsQueryXExtents16Reply, "<");
return BadFontName;
}
@@ -1823,13 +1848,15 @@ fs_read_glyphs(FontPathElementPtr fpe, FSBlockDataPtr blockrec)
unsigned long minchar, maxchar;
rep = (fsQueryXBitmaps16Reply *) fs_get_reply (conn, &ret);
- if (!rep || rep->type == FS_Error)
+ if (!rep || rep->type == FS_Error ||
+ (rep->length < LENGTHOF(fsQueryXBitmaps16Reply)))
{
if (ret == FSIO_BLOCK)
return StillWorking;
if (rep)
_fs_done_read (conn, rep->length << 2);
err = AllocError;
+ _fs_reply_failed (rep, fsQueryXBitmaps16Reply, "<");
goto bail;
}
@@ -2232,12 +2259,14 @@ fs_read_list(FontPathElementPtr fpe, FSBlockDataPtr blockrec)
int err;
rep = (fsListFontsReply *) fs_get_reply (conn, &ret);
- if (!rep || rep->type == FS_Error)
+ if (!rep || rep->type == FS_Error ||
+ (rep->length < LENGTHOF(fsListFontsReply)))
{
if (ret == FSIO_BLOCK)
return StillWorking;
if (rep)
_fs_done_read (conn, rep->length << 2);
+ _fs_reply_failed (rep, fsListFontsReply, "<");
return AllocError;
}
data = (char *) rep + SIZEOF (fsListFontsReply);
@@ -2356,12 +2385,15 @@ fs_read_list_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec)
_fs_free_props (&binfo->info);
rep = (fsListFontsWithXInfoReply *) fs_get_reply (conn, &ret);
- if (!rep || rep->type == FS_Error)
+ if (!rep || rep->type == FS_Error ||
+ ((rep->nameLength != 0) &&
+ (rep->length < LENGTHOF(fsListFontsWithXInfoReply))))
{
if (ret == FSIO_BLOCK)
return StillWorking;
binfo->status = FS_LFWI_FINISHED;
err = AllocError;
+ _fs_reply_failed (rep, fsListFontsWithXInfoReply, "<");
goto done;
}
/*