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authorvitalyisaev <vitalyisaev@ydb.tech>2023-11-30 13:26:22 +0300
committervitalyisaev <vitalyisaev@ydb.tech>2023-11-30 15:44:45 +0300
commit0a98fece5a9b54f16afeb3a94b3eb3105e9c3962 (patch)
tree291d72dbd7e9865399f668c84d11ed86fb190bbf /contrib/libs/libmagic/src/readelf.c
parentcb2c8d75065e5b3c47094067cb4aa407d4813298 (diff)
downloadydb-0a98fece5a9b54f16afeb3a94b3eb3105e9c3962.tar.gz
YQ Connector:Use docker-compose in integrational tests
Diffstat (limited to 'contrib/libs/libmagic/src/readelf.c')
-rw-r--r--contrib/libs/libmagic/src/readelf.c1899
1 files changed, 1899 insertions, 0 deletions
diff --git a/contrib/libs/libmagic/src/readelf.c b/contrib/libs/libmagic/src/readelf.c
new file mode 100644
index 0000000000..a2a66ddd72
--- /dev/null
+++ b/contrib/libs/libmagic/src/readelf.c
@@ -0,0 +1,1899 @@
+/*
+ * Copyright (c) Christos Zoulas 2003.
+ * 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.
+ */
+#include "file.h"
+
+#ifndef lint
+FILE_RCSID("@(#)$File: readelf.c,v 1.190 2023/07/27 19:39:06 christos Exp $")
+#endif
+
+#ifdef BUILTIN_ELF
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "readelf.h"
+#include "magic.h"
+
+#ifdef ELFCORE
+file_private int dophn_core(struct magic_set *, int, int, int, off_t, int,
+ size_t, off_t, int *, uint16_t *);
+#endif
+file_private int dophn_exec(struct magic_set *, int, int, int, off_t, int,
+ size_t, off_t, int, int *, uint16_t *);
+file_private int doshn(struct magic_set *, int, int, int, off_t, int, size_t,
+ off_t, int, int, int *, uint16_t *);
+file_private size_t donote(struct magic_set *, void *, size_t, size_t, int,
+ int, size_t, int *, uint16_t *, int, off_t, int, off_t);
+
+#define ELF_ALIGN(a) ((((a) + align - 1) / align) * align)
+
+#define isquote(c) (strchr("'\"`", (c)) != NULL)
+
+file_private uint16_t getu16(int, uint16_t);
+file_private uint32_t getu32(int, uint32_t);
+file_private uint64_t getu64(int, uint64_t);
+
+#define SIZE_UNKNOWN CAST(off_t, -1)
+
+file_private int
+toomany(struct magic_set *ms, const char *name, uint16_t num)
+{
+ if (ms->flags & MAGIC_MIME)
+ return 1;
+ if (file_printf(ms, ", too many %s (%u)", name, num) == -1)
+ return -1;
+ return 1;
+}
+
+file_private uint16_t
+getu16(int swap, uint16_t value)
+{
+ union {
+ uint16_t ui;
+ char c[2];
+ } retval, tmpval;
+
+ if (swap) {
+ tmpval.ui = value;
+
+ retval.c[0] = tmpval.c[1];
+ retval.c[1] = tmpval.c[0];
+
+ return retval.ui;
+ } else
+ return value;
+}
+
+file_private uint32_t
+getu32(int swap, uint32_t value)
+{
+ union {
+ uint32_t ui;
+ char c[4];
+ } retval, tmpval;
+
+ if (swap) {
+ tmpval.ui = value;
+
+ retval.c[0] = tmpval.c[3];
+ retval.c[1] = tmpval.c[2];
+ retval.c[2] = tmpval.c[1];
+ retval.c[3] = tmpval.c[0];
+
+ return retval.ui;
+ } else
+ return value;
+}
+
+file_private uint64_t
+getu64(int swap, uint64_t value)
+{
+ union {
+ uint64_t ui;
+ char c[8];
+ } retval, tmpval;
+
+ if (swap) {
+ tmpval.ui = value;
+
+ retval.c[0] = tmpval.c[7];
+ retval.c[1] = tmpval.c[6];
+ retval.c[2] = tmpval.c[5];
+ retval.c[3] = tmpval.c[4];
+ retval.c[4] = tmpval.c[3];
+ retval.c[5] = tmpval.c[2];
+ retval.c[6] = tmpval.c[1];
+ retval.c[7] = tmpval.c[0];
+
+ return retval.ui;
+ } else
+ return value;
+}
+
+#define elf_getu16(swap, value) getu16(swap, value)
+#define elf_getu32(swap, value) getu32(swap, value)
+#define elf_getu64(swap, value) getu64(swap, value)
+
+#define xsh_addr (clazz == ELFCLASS32 \
+ ? CAST(void *, &sh32) \
+ : CAST(void *, &sh64))
+#define xsh_sizeof (clazz == ELFCLASS32 \
+ ? sizeof(sh32) \
+ : sizeof(sh64))
+#define xsh_size CAST(size_t, (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, sh32.sh_size) \
+ : elf_getu64(swap, sh64.sh_size)))
+#define xsh_offset CAST(off_t, (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, sh32.sh_offset) \
+ : elf_getu64(swap, sh64.sh_offset)))
+#define xsh_type (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, sh32.sh_type) \
+ : elf_getu32(swap, sh64.sh_type))
+#define xsh_name (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, sh32.sh_name) \
+ : elf_getu32(swap, sh64.sh_name))
+
+#define xph_addr (clazz == ELFCLASS32 \
+ ? CAST(void *, &ph32) \
+ : CAST(void *, &ph64))
+#define xph_sizeof (clazz == ELFCLASS32 \
+ ? sizeof(ph32) \
+ : sizeof(ph64))
+#define xph_type (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, ph32.p_type) \
+ : elf_getu32(swap, ph64.p_type))
+#define xph_offset CAST(off_t, (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, ph32.p_offset) \
+ : elf_getu64(swap, ph64.p_offset)))
+#define xph_align CAST(size_t, (clazz == ELFCLASS32 \
+ ? CAST(off_t, (ph32.p_align ? \
+ elf_getu32(swap, ph32.p_align) : 4))\
+ : CAST(off_t, (ph64.p_align ? \
+ elf_getu64(swap, ph64.p_align) : 4))))
+#define xph_vaddr CAST(size_t, (clazz == ELFCLASS32 \
+ ? CAST(off_t, (ph32.p_vaddr ? \
+ elf_getu32(swap, ph32.p_vaddr) : 4))\
+ : CAST(off_t, (ph64.p_vaddr ? \
+ elf_getu64(swap, ph64.p_vaddr) : 4))))
+#define xph_filesz CAST(size_t, (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, ph32.p_filesz) \
+ : elf_getu64(swap, ph64.p_filesz)))
+#define xph_memsz CAST(size_t, ((clazz == ELFCLASS32 \
+ ? elf_getu32(swap, ph32.p_memsz) \
+ : elf_getu64(swap, ph64.p_memsz))))
+#define xnh_addr (clazz == ELFCLASS32 \
+ ? CAST(void *, &nh32) \
+ : CAST(void *, &nh64))
+#define xnh_sizeof (clazz == ELFCLASS32 \
+ ? sizeof(nh32) \
+ : sizeof(nh64))
+#define xnh_type (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, nh32.n_type) \
+ : elf_getu32(swap, nh64.n_type))
+#define xnh_namesz (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, nh32.n_namesz) \
+ : elf_getu32(swap, nh64.n_namesz))
+#define xnh_descsz (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, nh32.n_descsz) \
+ : elf_getu32(swap, nh64.n_descsz))
+
+#define xdh_addr (clazz == ELFCLASS32 \
+ ? CAST(void *, &dh32) \
+ : CAST(void *, &dh64))
+#define xdh_sizeof (clazz == ELFCLASS32 \
+ ? sizeof(dh32) \
+ : sizeof(dh64))
+#define xdh_tag (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, dh32.d_tag) \
+ : elf_getu64(swap, dh64.d_tag))
+#define xdh_val (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, dh32.d_un.d_val) \
+ : elf_getu64(swap, dh64.d_un.d_val))
+
+#define xcap_addr (clazz == ELFCLASS32 \
+ ? CAST(void *, &cap32) \
+ : CAST(void *, &cap64))
+#define xcap_sizeof (clazz == ELFCLASS32 \
+ ? sizeof(cap32) \
+ : sizeof(cap64))
+#define xcap_tag (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, cap32.c_tag) \
+ : elf_getu64(swap, cap64.c_tag))
+#define xcap_val (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, cap32.c_un.c_val) \
+ : elf_getu64(swap, cap64.c_un.c_val))
+
+#define xauxv_addr (clazz == ELFCLASS32 \
+ ? CAST(void *, &auxv32) \
+ : CAST(void *, &auxv64))
+#define xauxv_sizeof (clazz == ELFCLASS32 \
+ ? sizeof(auxv32) \
+ : sizeof(auxv64))
+#define xauxv_type (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, auxv32.a_type) \
+ : elf_getu64(swap, auxv64.a_type))
+#define xauxv_val (clazz == ELFCLASS32 \
+ ? elf_getu32(swap, auxv32.a_v) \
+ : elf_getu64(swap, auxv64.a_v))
+
+#define prpsoffsets(i) (clazz == ELFCLASS32 \
+ ? prpsoffsets32[i] \
+ : prpsoffsets64[i])
+
+#ifdef ELFCORE
+/*
+ * Try larger offsets first to avoid false matches
+ * from earlier data that happen to look like strings.
+ */
+static const size_t prpsoffsets32[] = {
+#ifdef USE_NT_PSINFO
+ 104, /* SunOS 5.x (command line) */
+ 88, /* SunOS 5.x (short name) */
+#endif /* USE_NT_PSINFO */
+
+ 100, /* SunOS 5.x (command line) */
+ 84, /* SunOS 5.x (short name) */
+
+ 44, /* Linux (command line) */
+ 28, /* Linux (short name) */
+
+ 48, /* Linux PowerPC (command line) */
+ 32, /* Linux PowerPC (short name) */
+
+ 8, /* FreeBSD */
+};
+
+static const size_t prpsoffsets64[] = {
+#ifdef USE_NT_PSINFO
+ 152, /* SunOS 5.x (command line) */
+ 136, /* SunOS 5.x (short name) */
+#endif /* USE_NT_PSINFO */
+
+ 136, /* SunOS 5.x, 64-bit (command line) */
+ 120, /* SunOS 5.x, 64-bit (short name) */
+
+ 56, /* Linux (command line) */
+ 40, /* Linux (tested on core from 2.4.x, short name) */
+
+ 16, /* FreeBSD, 64-bit */
+};
+
+#define NOFFSETS32 __arraycount(prpsoffsets32)
+#define NOFFSETS64 __arraycount(prpsoffsets64)
+
+#define NOFFSETS (clazz == ELFCLASS32 ? NOFFSETS32 : NOFFSETS64)
+
+/*
+ * Look through the program headers of an executable image, searching
+ * for a PT_NOTE section of type NT_PRPSINFO, with a name "CORE" or
+ * "FreeBSD"; if one is found, try looking in various places in its
+ * contents for a 16-character string containing only printable
+ * characters - if found, that string should be the name of the program
+ * that dropped core. Note: right after that 16-character string is,
+ * at least in SunOS 5.x (and possibly other SVR4-flavored systems) and
+ * Linux, a longer string (80 characters, in 5.x, probably other
+ * SVR4-flavored systems, and Linux) containing the start of the
+ * command line for that program.
+ *
+ * SunOS 5.x core files contain two PT_NOTE sections, with the types
+ * NT_PRPSINFO (old) and NT_PSINFO (new). These structs contain the
+ * same info about the command name and command line, so it probably
+ * isn't worthwhile to look for NT_PSINFO, but the offsets are provided
+ * above (see USE_NT_PSINFO), in case we ever decide to do so. The
+ * NT_PRPSINFO and NT_PSINFO sections are always in order and adjacent;
+ * the SunOS 5.x file command relies on this (and prefers the latter).
+ *
+ * The signal number probably appears in a section of type NT_PRSTATUS,
+ * but that's also rather OS-dependent, in ways that are harder to
+ * dissect with heuristics, so I'm not bothering with the signal number.
+ * (I suppose the signal number could be of interest in situations where
+ * you don't have the binary of the program that dropped core; if you
+ * *do* have that binary, the debugger will probably tell you what
+ * signal it was.)
+ */
+
+#define OS_STYLE_SVR4 0
+#define OS_STYLE_FREEBSD 1
+#define OS_STYLE_NETBSD 2
+
+file_private const char os_style_names[][8] = {
+ "SVR4",
+ "FreeBSD",
+ "NetBSD",
+};
+
+#define FLAGS_CORE_STYLE 0x0003
+
+#define FLAGS_DID_CORE 0x0004
+#define FLAGS_DID_OS_NOTE 0x0008
+#define FLAGS_DID_BUILD_ID 0x0010
+#define FLAGS_DID_CORE_STYLE 0x0020
+#define FLAGS_DID_NETBSD_PAX 0x0040
+#define FLAGS_DID_NETBSD_MARCH 0x0080
+#define FLAGS_DID_NETBSD_CMODEL 0x0100
+#define FLAGS_DID_NETBSD_EMULATION 0x0200
+#define FLAGS_DID_NETBSD_UNKNOWN 0x0400
+#define FLAGS_IS_CORE 0x0800
+#define FLAGS_DID_AUXV 0x1000
+
+file_private int
+dophn_core(struct magic_set *ms, int clazz, int swap, int fd, off_t off,
+ int num, size_t size, off_t fsize, int *flags, uint16_t *notecount)
+{
+ Elf32_Phdr ph32;
+ Elf64_Phdr ph64;
+ size_t offset, len;
+ unsigned char nbuf[BUFSIZ];
+ ssize_t bufsize;
+ off_t ph_off = off, offs;
+ int ph_num = num;
+
+ if (ms->flags & MAGIC_MIME)
+ return 0;
+
+ if (num == 0) {
+ if (file_printf(ms, ", no program header") == -1)
+ return -1;
+ return 0;
+ }
+ if (size != xph_sizeof) {
+ if (file_printf(ms, ", corrupted program header size") == -1)
+ return -1;
+ return 0;
+ }
+
+ /*
+ * Loop through all the program headers.
+ */
+ for ( ; num; num--) {
+ if (pread(fd, xph_addr, xph_sizeof, off) <
+ CAST(ssize_t, xph_sizeof)) {
+ if (file_printf(ms,
+ ", can't read elf program headers at %jd",
+ (intmax_t)off) == -1)
+ return -1;
+ return 0;
+ }
+ off += size;
+
+ if (fsize != SIZE_UNKNOWN && xph_offset > fsize) {
+ /* Perhaps warn here */
+ continue;
+ }
+
+ if (xph_type != PT_NOTE)
+ continue;
+
+ /*
+ * This is a PT_NOTE section; loop through all the notes
+ * in the section.
+ */
+ len = xph_filesz < sizeof(nbuf) ? xph_filesz : sizeof(nbuf);
+ offs = xph_offset;
+ if ((bufsize = pread(fd, nbuf, len, offs)) == -1) {
+ if (file_printf(ms, " can't read note section at %jd",
+ (intmax_t)offs) == -1)
+ return -1;
+ return 0;
+ }
+ offset = 0;
+ for (;;) {
+ if (offset >= CAST(size_t, bufsize))
+ break;
+ offset = donote(ms, nbuf, offset, CAST(size_t, bufsize),
+ clazz, swap, 4, flags, notecount, fd, ph_off,
+ ph_num, fsize);
+ if (offset == 0)
+ break;
+
+ }
+ }
+ return 0;
+}
+#endif
+
+static int
+do_note_netbsd_version(struct magic_set *ms, int swap, void *v)
+{
+ uint32_t desc;
+ memcpy(&desc, v, sizeof(desc));
+ desc = elf_getu32(swap, desc);
+
+ if (file_printf(ms, ", for NetBSD") == -1)
+ return -1;
+ /*
+ * The version number used to be stuck as 199905, and was thus
+ * basically content-free. Newer versions of NetBSD have fixed
+ * this and now use the encoding of __NetBSD_Version__:
+ *
+ * MMmmrrpp00
+ *
+ * M = major version
+ * m = minor version
+ * r = release ["",A-Z,Z[A-Z] but numeric]
+ * p = patchlevel
+ */
+ if (desc > 100000000U) {
+ uint32_t ver_patch = (desc / 100) % 100;
+ uint32_t ver_rel = (desc / 10000) % 100;
+ uint32_t ver_min = (desc / 1000000) % 100;
+ uint32_t ver_maj = desc / 100000000;
+
+ if (file_printf(ms, " %u.%u", ver_maj, ver_min) == -1)
+ return -1;
+ if (ver_maj >= 9) {
+ ver_patch += 100 * ver_rel;
+ ver_rel = 0;
+ }
+ if (ver_rel == 0 && ver_patch != 0) {
+ if (file_printf(ms, ".%u", ver_patch) == -1)
+ return -1;
+ } else if (ver_rel != 0) {
+ while (ver_rel > 26) {
+ if (file_printf(ms, "Z") == -1)
+ return -1;
+ ver_rel -= 26;
+ }
+ if (file_printf(ms, "%c", 'A' + ver_rel - 1) == -1)
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int
+do_note_freebsd_version(struct magic_set *ms, int swap, void *v)
+{
+ uint32_t desc;
+
+ memcpy(&desc, v, sizeof(desc));
+ desc = elf_getu32(swap, desc);
+ if (file_printf(ms, ", for FreeBSD") == -1)
+ return -1;
+
+ /*
+ * Contents is __FreeBSD_version, whose relation to OS
+ * versions is defined by a huge table in the Porter's
+ * Handbook. This is the general scheme:
+ *
+ * Releases:
+ * Mmp000 (before 4.10)
+ * Mmi0p0 (before 5.0)
+ * Mmm0p0
+ *
+ * Development branches:
+ * Mmpxxx (before 4.6)
+ * Mmp1xx (before 4.10)
+ * Mmi1xx (before 5.0)
+ * M000xx (pre-M.0)
+ * Mmm1xx
+ *
+ * M = major version
+ * m = minor version
+ * i = minor version increment (491000 -> 4.10)
+ * p = patchlevel
+ * x = revision
+ *
+ * The first release of FreeBSD to use ELF by default
+ * was version 3.0.
+ */
+ if (desc == 460002) {
+ if (file_printf(ms, " 4.6.2") == -1)
+ return -1;
+ } else if (desc < 460100) {
+ if (file_printf(ms, " %d.%d", desc / 100000,
+ desc / 10000 % 10) == -1)
+ return -1;
+ if (desc / 1000 % 10 > 0)
+ if (file_printf(ms, ".%d", desc / 1000 % 10) == -1)
+ return -1;
+ if ((desc % 1000 > 0) || (desc % 100000 == 0))
+ if (file_printf(ms, " (%d)", desc) == -1)
+ return -1;
+ } else if (desc < 500000) {
+ if (file_printf(ms, " %d.%d", desc / 100000,
+ desc / 10000 % 10 + desc / 1000 % 10) == -1)
+ return -1;
+ if (desc / 100 % 10 > 0) {
+ if (file_printf(ms, " (%d)", desc) == -1)
+ return -1;
+ } else if (desc / 10 % 10 > 0) {
+ if (file_printf(ms, ".%d", desc / 10 % 10) == -1)
+ return -1;
+ }
+ } else {
+ if (file_printf(ms, " %d.%d", desc / 100000,
+ desc / 1000 % 100) == -1)
+ return -1;
+ if ((desc / 100 % 10 > 0) ||
+ (desc % 100000 / 100 == 0)) {
+ if (file_printf(ms, " (%d)", desc) == -1)
+ return -1;
+ } else if (desc / 10 % 10 > 0) {
+ if (file_printf(ms, ".%d", desc / 10 % 10) == -1)
+ return -1;
+ }
+ }
+ return 0;
+}
+
+file_private int
+/*ARGSUSED*/
+do_bid_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
+ int swap __attribute__((__unused__)), uint32_t namesz, uint32_t descsz,
+ size_t noff, size_t doff, int *flags)
+{
+ if (namesz == 4 && strcmp(RCAST(char *, &nbuf[noff]), "GNU") == 0 &&
+ type == NT_GNU_BUILD_ID && (descsz >= 4 && descsz <= 20)) {
+ uint8_t desc[20];
+ const char *btype;
+ uint32_t i;
+ *flags |= FLAGS_DID_BUILD_ID;
+ switch (descsz) {
+ case 8:
+ btype = "xxHash";
+ break;
+ case 16:
+ btype = "md5/uuid";
+ break;
+ case 20:
+ btype = "sha1";
+ break;
+ default:
+ btype = "unknown";
+ break;
+ }
+ if (file_printf(ms, ", BuildID[%s]=", btype) == -1)
+ return -1;
+ memcpy(desc, &nbuf[doff], descsz);
+ for (i = 0; i < descsz; i++)
+ if (file_printf(ms, "%02x", desc[i]) == -1)
+ return -1;
+ return 1;
+ }
+ if (namesz == 4 && strcmp(RCAST(char *, &nbuf[noff]), "Go") == 0 &&
+ type == NT_GO_BUILD_ID && descsz < 128) {
+ char buf[256];
+ if (file_printf(ms, ", Go BuildID=%s",
+ file_copystr(buf, sizeof(buf), descsz,
+ RCAST(const char *, &nbuf[doff]))) == -1)
+ return -1;
+ return 1;
+ }
+ return 0;
+}
+
+file_private int
+do_os_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
+ int swap, uint32_t namesz, uint32_t descsz,
+ size_t noff, size_t doff, int *flags)
+{
+ const char *name = RCAST(const char *, &nbuf[noff]);
+
+ if (namesz == 5 && strcmp(name, "SuSE") == 0 &&
+ type == NT_GNU_VERSION && descsz == 2) {
+ *flags |= FLAGS_DID_OS_NOTE;
+ if (file_printf(ms, ", for SuSE %d.%d", nbuf[doff],
+ nbuf[doff + 1]) == -1)
+ return -1;
+ return 1;
+ }
+
+ if (namesz == 4 && strcmp(name, "GNU") == 0 &&
+ type == NT_GNU_VERSION && descsz == 16) {
+ uint32_t desc[4];
+ memcpy(desc, &nbuf[doff], sizeof(desc));
+
+ *flags |= FLAGS_DID_OS_NOTE;
+ if (file_printf(ms, ", for GNU/") == -1)
+ return -1;
+ switch (elf_getu32(swap, desc[0])) {
+ case GNU_OS_LINUX:
+ if (file_printf(ms, "Linux") == -1)
+ return -1;
+ break;
+ case GNU_OS_HURD:
+ if (file_printf(ms, "Hurd") == -1)
+ return -1;
+ break;
+ case GNU_OS_SOLARIS:
+ if (file_printf(ms, "Solaris") == -1)
+ return -1;
+ break;
+ case GNU_OS_KFREEBSD:
+ if (file_printf(ms, "kFreeBSD") == -1)
+ return -1;
+ break;
+ case GNU_OS_KNETBSD:
+ if (file_printf(ms, "kNetBSD") == -1)
+ return -1;
+ break;
+ default:
+ if (file_printf(ms, "<unknown>") == -1)
+ return -1;
+ }
+ if (file_printf(ms, " %d.%d.%d", elf_getu32(swap, desc[1]),
+ elf_getu32(swap, desc[2]), elf_getu32(swap, desc[3])) == -1)
+ return -1;
+ return 1;
+ }
+
+ if (namesz == 7 && strcmp(name, "NetBSD") == 0) {
+ if (type == NT_NETBSD_VERSION && descsz == 4) {
+ *flags |= FLAGS_DID_OS_NOTE;
+ if (do_note_netbsd_version(ms, swap, &nbuf[doff]) == -1)
+ return -1;
+ return 1;
+ }
+ }
+
+ if (namesz == 8 && strcmp(name, "FreeBSD") == 0) {
+ if (type == NT_FREEBSD_VERSION && descsz == 4) {
+ *flags |= FLAGS_DID_OS_NOTE;
+ if (do_note_freebsd_version(ms, swap, &nbuf[doff])
+ == -1)
+ return -1;
+ return 1;
+ }
+ }
+
+ if (namesz == 8 && strcmp(name, "OpenBSD") == 0 &&
+ type == NT_OPENBSD_VERSION && descsz == 4) {
+ *flags |= FLAGS_DID_OS_NOTE;
+ if (file_printf(ms, ", for OpenBSD") == -1)
+ return -1;
+ /* Content of note is always 0 */
+ return 1;
+ }
+
+ if (namesz == 10 && strcmp(name, "DragonFly") == 0 &&
+ type == NT_DRAGONFLY_VERSION && descsz == 4) {
+ uint32_t desc;
+ *flags |= FLAGS_DID_OS_NOTE;
+ if (file_printf(ms, ", for DragonFly") == -1)
+ return -1;
+ memcpy(&desc, &nbuf[doff], sizeof(desc));
+ desc = elf_getu32(swap, desc);
+ if (file_printf(ms, " %d.%d.%d", desc / 100000,
+ desc / 10000 % 10, desc % 10000) == -1)
+ return -1;
+ return 1;
+ }
+ return 0;
+}
+
+file_private int
+do_pax_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
+ int swap, uint32_t namesz, uint32_t descsz,
+ size_t noff, size_t doff, int *flags)
+{
+ const char *name = RCAST(const char *, &nbuf[noff]);
+
+ if (namesz == 4 && strcmp(name, "PaX") == 0 &&
+ type == NT_NETBSD_PAX && descsz == 4) {
+ static const char *pax[] = {
+ "+mprotect",
+ "-mprotect",
+ "+segvguard",
+ "-segvguard",
+ "+ASLR",
+ "-ASLR",
+ };
+ uint32_t desc;
+ size_t i;
+ int did = 0;
+
+ *flags |= FLAGS_DID_NETBSD_PAX;
+ memcpy(&desc, &nbuf[doff], sizeof(desc));
+ desc = elf_getu32(swap, desc);
+
+ if (desc && file_printf(ms, ", PaX: ") == -1)
+ return -1;
+
+ for (i = 0; i < __arraycount(pax); i++) {
+ if (((1 << CAST(int, i)) & desc) == 0)
+ continue;
+ if (file_printf(ms, "%s%s", did++ ? "," : "",
+ pax[i]) == -1)
+ return -1;
+ }
+ return 1;
+ }
+ return 0;
+}
+
+file_private int
+do_core_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
+ int swap, uint32_t namesz, uint32_t descsz,
+ size_t noff, size_t doff, int *flags, size_t size, int clazz)
+{
+#ifdef ELFCORE
+ char buf[256];
+ const char *name = RCAST(const char *, &nbuf[noff]);
+
+ int os_style = -1;
+ /*
+ * Sigh. The 2.0.36 kernel in Debian 2.1, at
+ * least, doesn't correctly implement name
+ * sections, in core dumps, as specified by
+ * the "Program Linking" section of "UNIX(R) System
+ * V Release 4 Programmer's Guide: ANSI C and
+ * Programming Support Tools", because my copy
+ * clearly says "The first 'namesz' bytes in 'name'
+ * contain a *null-terminated* [emphasis mine]
+ * character representation of the entry's owner
+ * or originator", but the 2.0.36 kernel code
+ * doesn't include the terminating null in the
+ * name....
+ */
+ if ((namesz == 4 && strncmp(name, "CORE", 4) == 0) ||
+ (namesz == 5 && strcmp(name, "CORE") == 0)) {
+ os_style = OS_STYLE_SVR4;
+ }
+
+ if ((namesz == 8 && strcmp(name, "FreeBSD") == 0)) {
+ os_style = OS_STYLE_FREEBSD;
+ }
+
+ if ((namesz >= 11 && strncmp(name, "NetBSD-CORE", 11)
+ == 0)) {
+ os_style = OS_STYLE_NETBSD;
+ }
+
+ if (os_style != -1 && (*flags & FLAGS_DID_CORE_STYLE) == 0) {
+ if (file_printf(ms, ", %s-style", os_style_names[os_style])
+ == -1)
+ return -1;
+ *flags |= FLAGS_DID_CORE_STYLE;
+ *flags |= os_style;
+ }
+
+ switch (os_style) {
+ case OS_STYLE_NETBSD:
+ if (type == NT_NETBSD_CORE_PROCINFO) {
+ char sbuf[512];
+ struct NetBSD_elfcore_procinfo pi;
+ memset(&pi, 0, sizeof(pi));
+ memcpy(&pi, nbuf + doff, MIN(descsz, sizeof(pi)));
+
+ if (file_printf(ms, ", from '%.31s', pid=%u, uid=%u, "
+ "gid=%u, nlwps=%u, lwp=%u (signal %u/code %u)",
+ file_printable(ms, sbuf, sizeof(sbuf),
+ RCAST(char *, pi.cpi_name), sizeof(pi.cpi_name)),
+ elf_getu32(swap, CAST(uint32_t, pi.cpi_pid)),
+ elf_getu32(swap, pi.cpi_euid),
+ elf_getu32(swap, pi.cpi_egid),
+ elf_getu32(swap, pi.cpi_nlwps),
+ elf_getu32(swap, CAST(uint32_t, pi.cpi_siglwp)),
+ elf_getu32(swap, pi.cpi_signo),
+ elf_getu32(swap, pi.cpi_sigcode)) == -1)
+ return -1;
+
+ *flags |= FLAGS_DID_CORE;
+ return 1;
+ }
+ break;
+
+ case OS_STYLE_FREEBSD:
+ if (type == NT_PRPSINFO && *flags & FLAGS_IS_CORE) {
+ size_t argoff, pidoff;
+
+ if (clazz == ELFCLASS32)
+ argoff = 4 + 4 + 17;
+ else
+ argoff = 4 + 4 + 8 + 17;
+ if (file_printf(ms, ", from '%.80s'", nbuf + doff +
+ argoff) == -1)
+ return -1;
+ pidoff = argoff + 81 + 2;
+ if (doff + pidoff + 4 <= size) {
+ if (file_printf(ms, ", pid=%u",
+ elf_getu32(swap, *RCAST(uint32_t *, (nbuf +
+ doff + pidoff)))) == -1)
+ return -1;
+ }
+ *flags |= FLAGS_DID_CORE;
+ }
+ break;
+
+ default:
+ if (type == NT_PRPSINFO && *flags & FLAGS_IS_CORE) {
+ size_t i, j;
+ unsigned char c;
+ /*
+ * Extract the program name. We assume
+ * it to be 16 characters (that's what it
+ * is in SunOS 5.x and Linux).
+ *
+ * Unfortunately, it's at a different offset
+ * in various OSes, so try multiple offsets.
+ * If the characters aren't all printable,
+ * reject it.
+ */
+ for (i = 0; i < NOFFSETS; i++) {
+ unsigned char *cname, *cp;
+ size_t reloffset = prpsoffsets(i);
+ size_t noffset = doff + reloffset;
+ size_t k;
+ for (j = 0; j < 16; j++, noffset++,
+ reloffset++) {
+ /*
+ * Make sure we're not past
+ * the end of the buffer; if
+ * we are, just give up.
+ */
+ if (noffset >= size)
+ goto tryanother;
+
+ /*
+ * Make sure we're not past
+ * the end of the contents;
+ * if we are, this obviously
+ * isn't the right offset.
+ */
+ if (reloffset >= descsz)
+ goto tryanother;
+
+ c = nbuf[noffset];
+ if (c == '\0') {
+ /*
+ * A '\0' at the
+ * beginning is
+ * obviously wrong.
+ * Any other '\0'
+ * means we're done.
+ */
+ if (j == 0)
+ goto tryanother;
+ else
+ break;
+ } else {
+ /*
+ * A nonprintable
+ * character is also
+ * wrong.
+ */
+ if (!isprint(c) || isquote(c))
+ goto tryanother;
+ }
+ }
+ /*
+ * Well, that worked.
+ */
+
+ /*
+ * Try next offsets, in case this match is
+ * in the middle of a string.
+ */
+ for (k = i + 1 ; k < NOFFSETS; k++) {
+ size_t no;
+ int adjust = 1;
+ if (prpsoffsets(k) >= prpsoffsets(i))
+ continue;
+ /*
+ * pr_fname == pr_psargs - 16 &&
+ * non-nul-terminated fname (qemu)
+ */
+ if (prpsoffsets(k) ==
+ prpsoffsets(i) - 16 && j == 16)
+ continue;
+ for (no = doff + prpsoffsets(k);
+ no < doff + prpsoffsets(i); no++)
+ adjust = adjust
+ && isprint(nbuf[no]);
+ if (adjust)
+ i = k;
+ }
+
+ cname = CAST(unsigned char *,
+ &nbuf[doff + prpsoffsets(i)]);
+ for (cp = cname; cp < nbuf + size && *cp
+ && isprint(*cp); cp++)
+ continue;
+ /*
+ * Linux apparently appends a space at the end
+ * of the command line: remove it.
+ */
+ while (cp > cname && isspace(cp[-1]))
+ cp--;
+ if (file_printf(ms, ", from '%s'",
+ file_copystr(buf, sizeof(buf),
+ CAST(size_t, cp - cname),
+ RCAST(char *, cname))) == -1)
+ return -1;
+ *flags |= FLAGS_DID_CORE;
+ return 1;
+
+ tryanother:
+ ;
+ }
+ }
+ break;
+ }
+#endif
+ return 0;
+}
+
+file_private off_t
+get_offset_from_virtaddr(struct magic_set *ms, int swap, int clazz, int fd,
+ off_t off, int num, off_t fsize, uint64_t virtaddr)
+{
+ Elf32_Phdr ph32;
+ Elf64_Phdr ph64;
+
+ /*
+ * Loop through all the program headers and find the header with
+ * virtual address in which the "virtaddr" belongs to.
+ */
+ for ( ; num; num--) {
+ if (pread(fd, xph_addr, xph_sizeof, off) <
+ CAST(ssize_t, xph_sizeof)) {
+ if (file_printf(ms,
+ ", can't read elf program header at %jd",
+ (intmax_t)off) == -1)
+ return -1;
+ return 0;
+
+ }
+ off += xph_sizeof;
+
+ if (fsize != SIZE_UNKNOWN && xph_offset > fsize) {
+ /* Perhaps warn here */
+ continue;
+ }
+
+ if (virtaddr >= xph_vaddr && virtaddr < xph_vaddr + xph_filesz)
+ return xph_offset + (virtaddr - xph_vaddr);
+ }
+ return 0;
+}
+
+file_private size_t
+get_string_on_virtaddr(struct magic_set *ms,
+ int swap, int clazz, int fd, off_t ph_off, int ph_num,
+ off_t fsize, uint64_t virtaddr, char *buf, ssize_t buflen)
+{
+ char *bptr;
+ off_t offset;
+
+ if (buflen == 0)
+ return 0;
+
+ offset = get_offset_from_virtaddr(ms, swap, clazz, fd, ph_off, ph_num,
+ fsize, virtaddr);
+ if (offset < 0 ||
+ (buflen = pread(fd, buf, CAST(size_t, buflen), offset)) <= 0) {
+ (void)file_printf(ms, ", can't read elf string at %jd",
+ (intmax_t)offset);
+ return 0;
+ }
+
+ buf[buflen - 1] = '\0';
+
+ /* We expect only printable characters, so return if buffer contains
+ * non-printable character before the '\0' or just '\0'. */
+ for (bptr = buf; *bptr && isprint(CAST(unsigned char, *bptr)); bptr++)
+ continue;
+ if (*bptr != '\0')
+ return 0;
+
+ return bptr - buf;
+}
+
+
+/*ARGSUSED*/
+file_private int
+do_auxv_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
+ int swap, uint32_t namesz __attribute__((__unused__)),
+ uint32_t descsz __attribute__((__unused__)),
+ size_t noff __attribute__((__unused__)), size_t doff,
+ int *flags, size_t size __attribute__((__unused__)), int clazz,
+ int fd, off_t ph_off, int ph_num, off_t fsize)
+{
+#ifdef ELFCORE
+ Aux32Info auxv32;
+ Aux64Info auxv64;
+ size_t elsize = xauxv_sizeof;
+ const char *tag;
+ int is_string;
+ size_t nval, off;
+
+ if ((*flags & (FLAGS_IS_CORE|FLAGS_DID_CORE_STYLE)) !=
+ (FLAGS_IS_CORE|FLAGS_DID_CORE_STYLE))
+ return 0;
+
+ switch (*flags & FLAGS_CORE_STYLE) {
+ case OS_STYLE_SVR4:
+ if (type != NT_AUXV)
+ return 0;
+ break;
+#ifdef notyet
+ case OS_STYLE_NETBSD:
+ if (type != NT_NETBSD_CORE_AUXV)
+ return 0;
+ break;
+ case OS_STYLE_FREEBSD:
+ if (type != NT_FREEBSD_PROCSTAT_AUXV)
+ return 0;
+ break;
+#endif
+ default:
+ return 0;
+ }
+
+ *flags |= FLAGS_DID_AUXV;
+
+ nval = 0;
+ for (off = 0; off + elsize <= descsz; off += elsize) {
+ memcpy(xauxv_addr, &nbuf[doff + off], xauxv_sizeof);
+ /* Limit processing to 50 vector entries to prevent DoS */
+ if (nval++ >= 50) {
+ file_error(ms, 0, "Too many ELF Auxv elements");
+ return 1;
+ }
+
+ switch(xauxv_type) {
+ case AT_LINUX_EXECFN:
+ is_string = 1;
+ tag = "execfn";
+ break;
+ case AT_LINUX_PLATFORM:
+ is_string = 1;
+ tag = "platform";
+ break;
+ case AT_LINUX_UID:
+ is_string = 0;
+ tag = "real uid";
+ break;
+ case AT_LINUX_GID:
+ is_string = 0;
+ tag = "real gid";
+ break;
+ case AT_LINUX_EUID:
+ is_string = 0;
+ tag = "effective uid";
+ break;
+ case AT_LINUX_EGID:
+ is_string = 0;
+ tag = "effective gid";
+ break;
+ default:
+ is_string = 0;
+ tag = NULL;
+ break;
+ }
+
+ if (tag == NULL)
+ continue;
+
+ if (is_string) {
+ char buf[256];
+ ssize_t buflen;
+ buflen = get_string_on_virtaddr(ms, swap, clazz, fd,
+ ph_off, ph_num, fsize, xauxv_val, buf, sizeof(buf));
+
+ if (buflen == 0)
+ continue;
+
+ if (file_printf(ms, ", %s: '%s'", tag, buf) == -1)
+ return -1;
+ } else {
+ if (file_printf(ms, ", %s: %d", tag,
+ CAST(int, xauxv_val)) == -1)
+ return -1;
+ }
+ }
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+file_private size_t
+dodynamic(struct magic_set *ms, void *vbuf, size_t offset, size_t size,
+ int clazz, int swap, int *pie, size_t *need)
+{
+ Elf32_Dyn dh32;
+ Elf64_Dyn dh64;
+ unsigned char *dbuf = CAST(unsigned char *, vbuf);
+
+ if (xdh_sizeof + offset > size) {
+ /*
+ * We're out of note headers.
+ */
+ return xdh_sizeof + offset;
+ }
+
+ memcpy(xdh_addr, &dbuf[offset], xdh_sizeof);
+ offset += xdh_sizeof;
+
+ switch (xdh_tag) {
+ case DT_FLAGS_1:
+ *pie = 1;
+ if (xdh_val & DF_1_PIE)
+ ms->mode |= 0111;
+ else
+ ms->mode &= ~0111;
+ break;
+ case DT_NEEDED:
+ (*need)++;
+ break;
+ default:
+ break;
+ }
+ return offset;
+}
+
+
+file_private size_t
+donote(struct magic_set *ms, void *vbuf, size_t offset, size_t size,
+ int clazz, int swap, size_t align, int *flags, uint16_t *notecount,
+ int fd, off_t ph_off, int ph_num, off_t fsize)
+{
+ Elf32_Nhdr nh32;
+ Elf64_Nhdr nh64;
+ size_t noff, doff;
+ uint32_t namesz, descsz;
+ char buf[256];
+ unsigned char *nbuf = CAST(unsigned char *, vbuf);
+
+ if (*notecount == 0)
+ return 0;
+ --*notecount;
+
+ if (xnh_sizeof + offset > size) {
+ /*
+ * We're out of note headers.
+ */
+ return xnh_sizeof + offset;
+ }
+ /*XXX: GCC */
+ memset(&nh32, 0, sizeof(nh32));
+ memset(&nh64, 0, sizeof(nh64));
+
+ memcpy(xnh_addr, &nbuf[offset], xnh_sizeof);
+ offset += xnh_sizeof;
+
+ namesz = xnh_namesz;
+ descsz = xnh_descsz;
+
+ if ((namesz == 0) && (descsz == 0)) {
+ /*
+ * We're out of note headers.
+ */
+ return (offset >= size) ? offset : size;
+ }
+
+ if (namesz & 0x80000000) {
+ (void)file_printf(ms, ", bad note name size %#lx",
+ CAST(unsigned long, namesz));
+ return 0;
+ }
+
+ if (descsz & 0x80000000) {
+ (void)file_printf(ms, ", bad note description size %#lx",
+ CAST(unsigned long, descsz));
+ return 0;
+ }
+
+ noff = offset;
+ doff = ELF_ALIGN(offset + namesz);
+
+ if (offset + namesz > size) {
+ /*
+ * We're past the end of the buffer.
+ */
+ return doff;
+ }
+
+ offset = ELF_ALIGN(doff + descsz);
+ if (doff + descsz > size) {
+ /*
+ * We're past the end of the buffer.
+ */
+ return (offset >= size) ? offset : size;
+ }
+
+
+ if ((*flags & FLAGS_DID_OS_NOTE) == 0) {
+ if (do_os_note(ms, nbuf, xnh_type, swap,
+ namesz, descsz, noff, doff, flags))
+ return offset;
+ }
+
+ if ((*flags & FLAGS_DID_BUILD_ID) == 0) {
+ if (do_bid_note(ms, nbuf, xnh_type, swap,
+ namesz, descsz, noff, doff, flags))
+ return offset;
+ }
+
+ if ((*flags & FLAGS_DID_NETBSD_PAX) == 0) {
+ if (do_pax_note(ms, nbuf, xnh_type, swap,
+ namesz, descsz, noff, doff, flags))
+ return offset;
+ }
+
+ if ((*flags & FLAGS_DID_CORE) == 0) {
+ if (do_core_note(ms, nbuf, xnh_type, swap,
+ namesz, descsz, noff, doff, flags, size, clazz))
+ return offset;
+ }
+
+ if ((*flags & FLAGS_DID_AUXV) == 0) {
+ if (do_auxv_note(ms, nbuf, xnh_type, swap,
+ namesz, descsz, noff, doff, flags, size, clazz,
+ fd, ph_off, ph_num, fsize))
+ return offset;
+ }
+
+ if (namesz == 7 && strcmp(RCAST(char *, &nbuf[noff]), "NetBSD") == 0) {
+ int descw, flag;
+ const char *str, *tag;
+ if (descsz > 100)
+ descsz = 100;
+ switch (xnh_type) {
+ case NT_NETBSD_VERSION:
+ return offset;
+ case NT_NETBSD_MARCH:
+ flag = FLAGS_DID_NETBSD_MARCH;
+ tag = "compiled for";
+ break;
+ case NT_NETBSD_CMODEL:
+ flag = FLAGS_DID_NETBSD_CMODEL;
+ tag = "compiler model";
+ break;
+ case NT_NETBSD_EMULATION:
+ flag = FLAGS_DID_NETBSD_EMULATION;
+ tag = "emulation:";
+ break;
+ default:
+ if (*flags & FLAGS_DID_NETBSD_UNKNOWN)
+ return offset;
+ *flags |= FLAGS_DID_NETBSD_UNKNOWN;
+ if (file_printf(ms, ", note=%u", xnh_type) == -1)
+ return offset;
+ return offset;
+ }
+
+ if (*flags & flag)
+ return offset;
+ str = RCAST(const char *, &nbuf[doff]);
+ descw = CAST(int, descsz);
+ *flags |= flag;
+ file_printf(ms, ", %s: %s", tag,
+ file_copystr(buf, sizeof(buf), descw, str));
+ return offset;
+ }
+
+ return offset;
+}
+
+/* SunOS 5.x hardware capability descriptions */
+typedef struct cap_desc {
+ uint64_t cd_mask;
+ const char *cd_name;
+} cap_desc_t;
+
+static const cap_desc_t cap_desc_sparc[] = {
+ { AV_SPARC_MUL32, "MUL32" },
+ { AV_SPARC_DIV32, "DIV32" },
+ { AV_SPARC_FSMULD, "FSMULD" },
+ { AV_SPARC_V8PLUS, "V8PLUS" },
+ { AV_SPARC_POPC, "POPC" },
+ { AV_SPARC_VIS, "VIS" },
+ { AV_SPARC_VIS2, "VIS2" },
+ { AV_SPARC_ASI_BLK_INIT, "ASI_BLK_INIT" },
+ { AV_SPARC_FMAF, "FMAF" },
+ { AV_SPARC_FJFMAU, "FJFMAU" },
+ { AV_SPARC_IMA, "IMA" },
+ { 0, NULL }
+};
+
+static const cap_desc_t cap_desc_386[] = {
+ { AV_386_FPU, "FPU" },
+ { AV_386_TSC, "TSC" },
+ { AV_386_CX8, "CX8" },
+ { AV_386_SEP, "SEP" },
+ { AV_386_AMD_SYSC, "AMD_SYSC" },
+ { AV_386_CMOV, "CMOV" },
+ { AV_386_MMX, "MMX" },
+ { AV_386_AMD_MMX, "AMD_MMX" },
+ { AV_386_AMD_3DNow, "AMD_3DNow" },
+ { AV_386_AMD_3DNowx, "AMD_3DNowx" },
+ { AV_386_FXSR, "FXSR" },
+ { AV_386_SSE, "SSE" },
+ { AV_386_SSE2, "SSE2" },
+ { AV_386_PAUSE, "PAUSE" },
+ { AV_386_SSE3, "SSE3" },
+ { AV_386_MON, "MON" },
+ { AV_386_CX16, "CX16" },
+ { AV_386_AHF, "AHF" },
+ { AV_386_TSCP, "TSCP" },
+ { AV_386_AMD_SSE4A, "AMD_SSE4A" },
+ { AV_386_POPCNT, "POPCNT" },
+ { AV_386_AMD_LZCNT, "AMD_LZCNT" },
+ { AV_386_SSSE3, "SSSE3" },
+ { AV_386_SSE4_1, "SSE4.1" },
+ { AV_386_SSE4_2, "SSE4.2" },
+ { 0, NULL }
+};
+
+file_private int
+doshn(struct magic_set *ms, int clazz, int swap, int fd, off_t off, int num,
+ size_t size, off_t fsize, int mach, int strtab, int *flags,
+ uint16_t *notecount)
+{
+ Elf32_Shdr sh32;
+ Elf64_Shdr sh64;
+ int stripped = 1, has_debug_info = 0;
+ size_t nbadcap = 0;
+ void *nbuf;
+ off_t noff, coff, name_off, offs;
+ uint64_t cap_hw1 = 0; /* SunOS 5.x hardware capabilities */
+ uint64_t cap_sf1 = 0; /* SunOS 5.x software capabilities */
+ char name[50];
+ ssize_t namesize;
+
+ if (ms->flags & MAGIC_MIME)
+ return 0;
+
+ if (num == 0) {
+ if (file_printf(ms, ", no section header") == -1)
+ return -1;
+ return 0;
+ }
+ if (size != xsh_sizeof) {
+ if (file_printf(ms, ", corrupted section header size") == -1)
+ return -1;
+ return 0;
+ }
+
+ /* Read offset of name section to be able to read section names later */
+ offs = CAST(off_t, (off + size * strtab));
+ if (pread(fd, xsh_addr, xsh_sizeof, offs) < CAST(ssize_t, xsh_sizeof)) {
+ if (file_printf(ms, ", missing section headers at %jd",
+ (intmax_t)offs) == -1)
+ return -1;
+ return 0;
+ }
+ name_off = xsh_offset;
+
+ if (fsize != SIZE_UNKNOWN && fsize < name_off) {
+ if (file_printf(ms, ", too large section header offset %jd",
+ (intmax_t)name_off) == -1)
+ return -1;
+ return 0;
+ }
+
+ for ( ; num; num--) {
+ /* Read the name of this section. */
+ offs = name_off + xsh_name;
+ if ((namesize = pread(fd, name, sizeof(name) - 1, offs))
+ == -1) {
+ if (file_printf(ms,
+ ", can't read name of elf section at %jd",
+ (intmax_t)offs) == -1)
+ return -1;
+ return 0;
+ }
+ name[namesize] = '\0';
+ if (strcmp(name, ".debug_info") == 0) {
+ has_debug_info = 1;
+ stripped = 0;
+ }
+
+ if (pread(fd, xsh_addr, xsh_sizeof, off) <
+ CAST(ssize_t, xsh_sizeof)) {
+ if (file_printf(ms, ", can't read elf section at %jd",
+ (intmax_t)off) == -1)
+ return -1;
+ return 0;
+ }
+ off += size;
+
+ /* Things we can determine before we seek */
+ switch (xsh_type) {
+ case SHT_SYMTAB:
+#if 0
+ case SHT_DYNSYM:
+#endif
+ stripped = 0;
+ break;
+ default:
+ if (fsize != SIZE_UNKNOWN && xsh_offset > fsize) {
+ /* Perhaps warn here */
+ continue;
+ }
+ break;
+ }
+
+
+ /* Things we can determine when we seek */
+ switch (xsh_type) {
+ case SHT_NOTE:
+ if (CAST(uintmax_t, (xsh_size + xsh_offset)) >
+ CAST(uintmax_t, fsize)) {
+ if (file_printf(ms,
+ ", note offset/size %#" INTMAX_T_FORMAT
+ "x+%#" INTMAX_T_FORMAT "x exceeds"
+ " file size %#" INTMAX_T_FORMAT "x",
+ CAST(uintmax_t, xsh_offset),
+ CAST(uintmax_t, xsh_size),
+ CAST(uintmax_t, fsize)) == -1)
+ return -1;
+ return 0;
+ }
+ if (xsh_size > ms->elf_shsize_max) {
+ file_error(ms, errno, "Note section size too "
+ "big (%ju > %zu)", (uintmax_t)xsh_size,
+ ms->elf_shsize_max);
+ return -1;
+ }
+ if ((nbuf = malloc(xsh_size)) == NULL) {
+ file_error(ms, errno, "Cannot allocate memory"
+ " for note");
+ return -1;
+ }
+ offs = xsh_offset;
+ if (pread(fd, nbuf, xsh_size, offs) <
+ CAST(ssize_t, xsh_size)) {
+ free(nbuf);
+ if (file_printf(ms,
+ ", can't read elf note at %jd",
+ (intmax_t)offs) == -1)
+ return -1;
+ return 0;
+ }
+
+ noff = 0;
+ for (;;) {
+ if (noff >= CAST(off_t, xsh_size))
+ break;
+ noff = donote(ms, nbuf, CAST(size_t, noff),
+ xsh_size, clazz, swap, 4, flags, notecount,
+ fd, 0, 0, 0);
+ if (noff == 0)
+ break;
+ }
+ free(nbuf);
+ break;
+ case SHT_SUNW_cap:
+ switch (mach) {
+ case EM_SPARC:
+ case EM_SPARCV9:
+ case EM_IA_64:
+ case EM_386:
+ case EM_AMD64:
+ break;
+ default:
+ goto skip;
+ }
+
+ if (nbadcap > 5)
+ break;
+ if (lseek(fd, xsh_offset, SEEK_SET)
+ == CAST(off_t, -1)) {
+ file_badseek(ms);
+ return -1;
+ }
+ coff = 0;
+ for (;;) {
+ Elf32_Cap cap32;
+ Elf64_Cap cap64;
+ char cbuf[/*CONSTCOND*/
+ MAX(sizeof(cap32), sizeof(cap64))];
+ if ((coff += xcap_sizeof) >
+ CAST(off_t, xsh_size))
+ break;
+ if (read(fd, cbuf, CAST(size_t, xcap_sizeof)) !=
+ CAST(ssize_t, xcap_sizeof)) {
+ file_badread(ms);
+ return -1;
+ }
+ if (cbuf[0] == 'A') {
+#ifdef notyet
+ char *p = cbuf + 1;
+ uint32_t len, tag;
+ memcpy(&len, p, sizeof(len));
+ p += 4;
+ len = getu32(swap, len);
+ if (memcmp("gnu", p, 3) != 0) {
+ if (file_printf(ms,
+ ", unknown capability %.3s", p)
+ == -1)
+ return -1;
+ break;
+ }
+ p += strlen(p) + 1;
+ tag = *p++;
+ memcpy(&len, p, sizeof(len));
+ p += 4;
+ len = getu32(swap, len);
+ if (tag != 1) {
+ if (file_printf(ms, ", unknown gnu"
+ " capability tag %d", tag)
+ == -1)
+ return -1;
+ break;
+ }
+ // gnu attributes
+#endif
+ break;
+ }
+ memcpy(xcap_addr, cbuf, xcap_sizeof);
+ switch (xcap_tag) {
+ case CA_SUNW_NULL:
+ break;
+ case CA_SUNW_HW_1:
+ cap_hw1 |= xcap_val;
+ break;
+ case CA_SUNW_SF_1:
+ cap_sf1 |= xcap_val;
+ break;
+ default:
+ if (file_printf(ms,
+ ", with unknown capability "
+ "%#" INT64_T_FORMAT "x = %#"
+ INT64_T_FORMAT "x",
+ CAST(unsigned long long, xcap_tag),
+ CAST(unsigned long long, xcap_val))
+ == -1)
+ return -1;
+ if (nbadcap++ > 2)
+ coff = xsh_size;
+ break;
+ }
+ }
+ /*FALLTHROUGH*/
+ skip:
+ default:
+ break;
+ }
+ }
+
+ if (has_debug_info) {
+ if (file_printf(ms, ", with debug_info") == -1)
+ return -1;
+ }
+ if (file_printf(ms, ", %sstripped", stripped ? "" : "not ") == -1)
+ return -1;
+ if (cap_hw1) {
+ const cap_desc_t *cdp;
+ switch (mach) {
+ case EM_SPARC:
+ case EM_SPARC32PLUS:
+ case EM_SPARCV9:
+ cdp = cap_desc_sparc;
+ break;
+ case EM_386:
+ case EM_IA_64:
+ case EM_AMD64:
+ cdp = cap_desc_386;
+ break;
+ default:
+ cdp = NULL;
+ break;
+ }
+ if (file_printf(ms, ", uses") == -1)
+ return -1;
+ if (cdp) {
+ while (cdp->cd_name) {
+ if (cap_hw1 & cdp->cd_mask) {
+ if (file_printf(ms,
+ " %s", cdp->cd_name) == -1)
+ return -1;
+ cap_hw1 &= ~cdp->cd_mask;
+ }
+ ++cdp;
+ }
+ if (cap_hw1)
+ if (file_printf(ms,
+ " unknown hardware capability %#"
+ INT64_T_FORMAT "x",
+ CAST(unsigned long long, cap_hw1)) == -1)
+ return -1;
+ } else {
+ if (file_printf(ms,
+ " hardware capability %#" INT64_T_FORMAT "x",
+ CAST(unsigned long long, cap_hw1)) == -1)
+ return -1;
+ }
+ }
+ if (cap_sf1) {
+ if (cap_sf1 & SF1_SUNW_FPUSED) {
+ if (file_printf(ms,
+ (cap_sf1 & SF1_SUNW_FPKNWN)
+ ? ", uses frame pointer"
+ : ", not known to use frame pointer") == -1)
+ return -1;
+ }
+ cap_sf1 &= ~SF1_SUNW_MASK;
+ if (cap_sf1)
+ if (file_printf(ms,
+ ", with unknown software capability %#"
+ INT64_T_FORMAT "x",
+ CAST(unsigned long long, cap_sf1)) == -1)
+ return -1;
+ }
+ return 0;
+}
+
+/*
+ * Look through the program headers of an executable image, to determine
+ * if it is statically or dynamically linked. If it has a dynamic section,
+ * it is pie, and does not have an interpreter or needed libraries, we
+ * call it static pie.
+ */
+file_private int
+dophn_exec(struct magic_set *ms, int clazz, int swap, int fd, off_t off,
+ int num, size_t size, off_t fsize, int sh_num, int *flags,
+ uint16_t *notecount)
+{
+ Elf32_Phdr ph32;
+ Elf64_Phdr ph64;
+ const char *linking_style;
+ unsigned char nbuf[BUFSIZ];
+ char ibuf[BUFSIZ];
+ char interp[BUFSIZ];
+ ssize_t bufsize;
+ size_t offset, align, need = 0;
+ int pie = 0, dynamic = 0;
+
+ if (num == 0) {
+ if (file_printf(ms, ", no program header") == -1)
+ return -1;
+ return 0;
+ }
+ if (size != xph_sizeof) {
+ if (file_printf(ms, ", corrupted program header size") == -1)
+ return -1;
+ return 0;
+ }
+
+ interp[0] = '\0';
+ for ( ; num; num--) {
+ int doread;
+ if (pread(fd, xph_addr, xph_sizeof, off) <
+ CAST(ssize_t, xph_sizeof)) {
+ if (file_printf(ms,
+ ", can't read elf program headers at %jd",
+ (intmax_t)off) == -1)
+ return -1;
+ return 0;
+ }
+
+ off += size;
+ bufsize = 0;
+ align = 4;
+
+ /* Things we can determine before we seek */
+ switch (xph_type) {
+ case PT_DYNAMIC:
+ doread = 1;
+ break;
+ case PT_NOTE:
+ if (sh_num) /* Did this through section headers */
+ continue;
+ if (((align = xph_align) & 0x80000000UL) != 0 ||
+ align < 4) {
+ if (file_printf(ms,
+ ", invalid note alignment %#lx",
+ CAST(unsigned long, align)) == -1)
+ return -1;
+ align = 4;
+ }
+ /*FALLTHROUGH*/
+ case PT_INTERP:
+ doread = 1;
+ break;
+ default:
+ doread = 0;
+ if (fsize != SIZE_UNKNOWN && xph_offset > fsize) {
+ /* Maybe warn here? */
+ continue;
+ }
+ break;
+ }
+
+ if (doread) {
+ size_t len = xph_filesz < sizeof(nbuf) ? xph_filesz
+ : sizeof(nbuf);
+ off_t offs = xph_offset;
+ bufsize = pread(fd, nbuf, len, offs);
+ if (bufsize == -1) {
+ if (file_printf(ms,
+ ", can't read section at %jd",
+ (intmax_t)offs) == -1)
+ return -1;
+ return 0;
+ }
+ }
+
+ /* Things we can determine when we seek */
+ switch (xph_type) {
+ case PT_DYNAMIC:
+ dynamic = 1;
+ offset = 0;
+ // Let DF_1 determine if we are PIE or not.
+ ms->mode &= ~0111;
+ for (;;) {
+ if (offset >= CAST(size_t, bufsize))
+ break;
+ offset = dodynamic(ms, nbuf, offset,
+ CAST(size_t, bufsize), clazz, swap,
+ &pie, &need);
+ if (offset == 0)
+ break;
+ }
+ if (ms->flags & MAGIC_MIME)
+ continue;
+ break;
+
+ case PT_INTERP:
+ need++;
+ if (ms->flags & MAGIC_MIME)
+ continue;
+ if (bufsize && nbuf[0]) {
+ nbuf[bufsize - 1] = '\0';
+ memcpy(interp, nbuf, CAST(size_t, bufsize));
+ } else
+ strlcpy(interp, "*empty*", sizeof(interp));
+ break;
+ case PT_NOTE:
+ if (ms->flags & MAGIC_MIME)
+ return 0;
+ /*
+ * This is a PT_NOTE section; loop through all the notes
+ * in the section.
+ */
+ offset = 0;
+ for (;;) {
+ if (offset >= CAST(size_t, bufsize))
+ break;
+ offset = donote(ms, nbuf, offset,
+ CAST(size_t, bufsize), clazz, swap, align,
+ flags, notecount, fd, 0, 0, 0);
+ if (offset == 0)
+ break;
+ }
+ break;
+ default:
+ if (ms->flags & MAGIC_MIME)
+ continue;
+ break;
+ }
+ }
+ if (ms->flags & MAGIC_MIME)
+ return 0;
+ if (dynamic) {
+ if (pie && need == 0)
+ linking_style = "static-pie";
+ else
+ linking_style = "dynamically";
+ } else {
+ linking_style = "statically";
+ }
+ if (file_printf(ms, ", %s linked", linking_style) == -1)
+ return -1;
+ if (interp[0])
+ if (file_printf(ms, ", interpreter %s", file_printable(ms,
+ ibuf, sizeof(ibuf), interp, sizeof(interp))) == -1)
+ return -1;
+ return 0;
+}
+
+
+file_protected int
+file_tryelf(struct magic_set *ms, const struct buffer *b)
+{
+ int fd = b->fd;
+ const unsigned char *buf = CAST(const unsigned char *, b->fbuf);
+ size_t nbytes = b->flen;
+ union {
+ int32_t l;
+ char c[sizeof(int32_t)];
+ } u;
+ int clazz;
+ int swap;
+ struct stat st;
+ const struct stat *stp;
+ off_t fsize;
+ int flags = 0;
+ Elf32_Ehdr elf32hdr;
+ Elf64_Ehdr elf64hdr;
+ uint16_t type, phnum, shnum, notecount;
+
+ if (ms->flags & (MAGIC_APPLE|MAGIC_EXTENSION))
+ return 0;
+ /*
+ * ELF executables have multiple section headers in arbitrary
+ * file locations and thus file(1) cannot determine it from easily.
+ * Instead we traverse thru all section headers until a symbol table
+ * one is found or else the binary is stripped.
+ * Return immediately if it's not ELF (so we avoid pipe2file unless
+ * needed).
+ */
+ if (buf[EI_MAG0] != ELFMAG0
+ || (buf[EI_MAG1] != ELFMAG1 && buf[EI_MAG1] != OLFMAG1)
+ || buf[EI_MAG2] != ELFMAG2 || buf[EI_MAG3] != ELFMAG3)
+ return 0;
+
+ /*
+ * If we cannot seek, it must be a pipe, socket or fifo.
+ */
+ if((lseek(fd, CAST(off_t, 0), SEEK_SET) == CAST(off_t, -1))
+ && (errno == ESPIPE))
+ fd = file_pipe2file(ms, fd, buf, nbytes);
+
+ if (fd == -1) {
+ file_badread(ms);
+ return -1;
+ }
+
+ stp = &b->st;
+ /*
+ * b->st.st_size != 0 if previous fstat() succeeded,
+ * which is likely, we can avoid extra stat() call.
+ */
+ if (b->st.st_size == 0) {
+ stp = &st;
+ if (fstat(fd, &st) == -1) {
+ file_badread(ms);
+ return -1;
+ }
+ }
+ if (S_ISREG(stp->st_mode) || stp->st_size != 0)
+ fsize = stp->st_size;
+ else
+ fsize = SIZE_UNKNOWN;
+
+ clazz = buf[EI_CLASS];
+
+ switch (clazz) {
+ case ELFCLASS32:
+#undef elf_getu
+#define elf_getu(a, b) elf_getu32(a, b)
+#undef elfhdr
+#define elfhdr elf32hdr
+#include "elfclass.h"
+ case ELFCLASS64:
+#undef elf_getu
+#define elf_getu(a, b) elf_getu64(a, b)
+#undef elfhdr
+#define elfhdr elf64hdr
+#include "elfclass.h"
+ default:
+ if (file_printf(ms, ", unknown class %d", clazz) == -1)
+ return -1;
+ break;
+ }
+ return 0;
+}
+#endif