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-rw-r--r--src/elfclass.h82
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;