1 files changed, 82 insertions, 0 deletions
diff --git a/src/elfclass.h b/src/elfclass.h
new file mode 100644
index 0000000..936d8dc
--- /dev/null
+++ b/src/elfclass.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) Christos Zoulas 2008.
+ * All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice immediately at the beginning of the file, without modification,
+ *    this list of conditions, and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+	if (nbytes <= sizeof(elfhdr))
+		return 0;
+
+	u.l = 1;
+	(void)memcpy(&elfhdr, buf, sizeof elfhdr);
+	swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA];
+
+	type = elf_getu16(swap, elfhdr.e_type);
+	notecount = ms->elf_notes_max;
+	switch (type) {
+#ifdef ELFCORE
+	case ET_CORE:
+		phnum = elf_getu16(swap, elfhdr.e_phnum);
+		if (phnum > ms->elf_phnum_max)
+			return toomany(ms, "program headers", phnum);
+		flags |= FLAGS_IS_CORE;
+		if (dophn_core(ms, clazz, swap, fd,
+		    CAST(off_t, elf_getu(swap, elfhdr.e_phoff)), phnum,
+		    CAST(size_t, elf_getu16(swap, elfhdr.e_phentsize)),
+		    fsize, &flags, &notecount) == -1)
+			return -1;
+		break;
+#endif
+	case ET_EXEC:
+	case ET_DYN:
+		phnum = elf_getu16(swap, elfhdr.e_phnum);
+		if (phnum > ms->elf_phnum_max)
+			return toomany(ms, "program", phnum);
+		shnum = elf_getu16(swap, elfhdr.e_shnum);
+		if (shnum > ms->elf_shnum_max)
+			return toomany(ms, "section", shnum);
+		if (dophn_exec(ms, clazz, swap, fd,
+		    CAST(off_t, elf_getu(swap, elfhdr.e_phoff)), phnum,
+		    CAST(size_t, elf_getu16(swap, elfhdr.e_phentsize)),
+		    fsize, shnum, &flags, &notecount) == -1)
+			return -1;
+		/*FALLTHROUGH*/
+	case ET_REL:
+		shnum = elf_getu16(swap, elfhdr.e_shnum);
+		if (shnum > ms->elf_shnum_max)
+			return toomany(ms, "section headers", shnum);
+		if (doshn(ms, clazz, swap, fd,
+		    CAST(off_t, elf_getu(swap, elfhdr.e_shoff)), shnum,
+		    CAST(size_t, elf_getu16(swap, elfhdr.e_shentsize)),
+		    fsize, elf_getu16(swap, elfhdr.e_machine),
+		    CAST(int, elf_getu16(swap, elfhdr.e_shstrndx)),
+		    &flags, &notecount) == -1)
+			return -1;
+		break;
+
+	default:
+		break;
+	}
+	if (notecount == 0)
+		return toomany(ms, "notes", ms->elf_notes_max);
+	return 1;