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FILE5_46
src/elfclass.h
82 строки
3 KB
Christos Zoulas
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24 сен 2022, 23:30
24 сен 2022, 23:30
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/* * 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, ¬ecount) == -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, ¬ecount) == -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, ¬ecount) == -1) return -1; break; default: break; } if (notecount == 0) return toomany(ms, "notes", ms->elf_notes_max); return 1;