1133359Sobrien/* 2133359Sobrien * Copyright (c) Christos Zoulas 2003. 3133359Sobrien * All Rights Reserved. 4133359Sobrien * 5133359Sobrien * Redistribution and use in source and binary forms, with or without 6133359Sobrien * modification, are permitted provided that the following conditions 7133359Sobrien * are met: 8133359Sobrien * 1. Redistributions of source code must retain the above copyright 9133359Sobrien * notice immediately at the beginning of the file, without modification, 10133359Sobrien * this list of conditions, and the following disclaimer. 11133359Sobrien * 2. Redistributions in binary form must reproduce the above copyright 12133359Sobrien * notice, this list of conditions and the following disclaimer in the 13133359Sobrien * documentation and/or other materials provided with the distribution. 14133359Sobrien * 15133359Sobrien * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16133359Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17133359Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18133359Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 19133359Sobrien * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20133359Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21133359Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22133359Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23133359Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24133359Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25133359Sobrien * SUCH DAMAGE. 26133359Sobrien */ 2768349Sobrien#include "file.h" 2868349Sobrien 29191771Sobrien#ifndef lint 30234449SobrienFILE_RCSID("@(#)$File: readelf.c,v 1.90 2011/08/23 08:01:12 christos Exp $") 31191771Sobrien#endif 32191771Sobrien 3368349Sobrien#ifdef BUILTIN_ELF 3468349Sobrien#include <string.h> 3568349Sobrien#include <ctype.h> 3668349Sobrien#include <stdlib.h> 3768349Sobrien#ifdef HAVE_UNISTD_H 3868349Sobrien#include <unistd.h> 3968349Sobrien#endif 4068349Sobrien 4168349Sobrien#include "readelf.h" 42186691Sobrien#include "magic.h" 4368349Sobrien 4468349Sobrien#ifdef ELFCORE 45169942Sobrienprivate int dophn_core(struct magic_set *, int, int, int, off_t, int, size_t, 46169942Sobrien off_t, int *); 4768349Sobrien#endif 48169942Sobrienprivate int dophn_exec(struct magic_set *, int, int, int, off_t, int, size_t, 49186691Sobrien off_t, int *, int); 50234449Sobrienprivate int doshn(struct magic_set *, int, int, int, off_t, int, size_t, 51234449Sobrien off_t, int *, int); 52186691Sobrienprivate size_t donote(struct magic_set *, void *, size_t, size_t, int, 53159764Sobrien int, size_t, int *); 5468349Sobrien 55133359Sobrien#define ELF_ALIGN(a) ((((a) + align - 1) / align) * align) 5668349Sobrien 57159764Sobrien#define isquote(c) (strchr("'\"`", (c)) != NULL) 58159764Sobrien 59133359Sobrienprivate uint16_t getu16(int, uint16_t); 60133359Sobrienprivate uint32_t getu32(int, uint32_t); 61133359Sobrienprivate uint64_t getu64(int, uint64_t); 62133359Sobrien 63275671Sdelphij#define MAX_PHNUM 256 64275671Sdelphij#define MAX_SHNUM 1024 65275671Sdelphij 66275671Sdelphijprivate int 67275671Sdelphijtoomany(struct magic_set *ms, const char *name, uint16_t num) 68275671Sdelphij{ 69275671Sdelphij if (file_printf(ms, ", too many %s header sections (%u)", name, num 70275671Sdelphij ) == -1) 71275671Sdelphij return -1; 72275671Sdelphij return 0; 73275671Sdelphij} 74275671Sdelphij 75133359Sobrienprivate uint16_t 76103373Sobriengetu16(int swap, uint16_t value) 7768349Sobrien{ 7868349Sobrien union { 7968349Sobrien uint16_t ui; 8068349Sobrien char c[2]; 8168349Sobrien } retval, tmpval; 8268349Sobrien 8368349Sobrien if (swap) { 8468349Sobrien tmpval.ui = value; 8568349Sobrien 8668349Sobrien retval.c[0] = tmpval.c[1]; 8768349Sobrien retval.c[1] = tmpval.c[0]; 8868349Sobrien 8968349Sobrien return retval.ui; 9068349Sobrien } else 9168349Sobrien return value; 9268349Sobrien} 9368349Sobrien 94133359Sobrienprivate uint32_t 95103373Sobriengetu32(int swap, uint32_t value) 9668349Sobrien{ 9768349Sobrien union { 9868349Sobrien uint32_t ui; 9968349Sobrien char c[4]; 10068349Sobrien } retval, tmpval; 10168349Sobrien 10268349Sobrien if (swap) { 10368349Sobrien tmpval.ui = value; 10468349Sobrien 10568349Sobrien retval.c[0] = tmpval.c[3]; 10668349Sobrien retval.c[1] = tmpval.c[2]; 10768349Sobrien retval.c[2] = tmpval.c[1]; 10868349Sobrien retval.c[3] = tmpval.c[0]; 10968349Sobrien 11068349Sobrien return retval.ui; 11168349Sobrien } else 11268349Sobrien return value; 11368349Sobrien} 11468349Sobrien 115133359Sobrienprivate uint64_t 116103373Sobriengetu64(int swap, uint64_t value) 11768349Sobrien{ 11868349Sobrien union { 11968349Sobrien uint64_t ui; 12068349Sobrien char c[8]; 12168349Sobrien } retval, tmpval; 12268349Sobrien 12368349Sobrien if (swap) { 12468349Sobrien tmpval.ui = value; 12568349Sobrien 12668349Sobrien retval.c[0] = tmpval.c[7]; 12768349Sobrien retval.c[1] = tmpval.c[6]; 12868349Sobrien retval.c[2] = tmpval.c[5]; 12968349Sobrien retval.c[3] = tmpval.c[4]; 13068349Sobrien retval.c[4] = tmpval.c[3]; 13168349Sobrien retval.c[5] = tmpval.c[2]; 13268349Sobrien retval.c[6] = tmpval.c[1]; 13368349Sobrien retval.c[7] = tmpval.c[0]; 13468349Sobrien 13568349Sobrien return retval.ui; 13668349Sobrien } else 13768349Sobrien return value; 13868349Sobrien} 13968349Sobrien 140186691Sobrien#define elf_getu16(swap, value) getu16(swap, value) 141186691Sobrien#define elf_getu32(swap, value) getu32(swap, value) 142159764Sobrien#ifdef USE_ARRAY_FOR_64BIT_TYPES 143159764Sobrien# define elf_getu64(swap, array) \ 144186691Sobrien ((swap ? ((uint64_t)elf_getu32(swap, array[0])) << 32 : elf_getu32(swap, array[0])) + \ 145186691Sobrien (swap ? elf_getu32(swap, array[1]) : ((uint64_t)elf_getu32(swap, array[1]) << 32))) 146159764Sobrien#else 147159764Sobrien# define elf_getu64(swap, value) getu64(swap, value) 148159764Sobrien#endif 149159764Sobrien 150186691Sobrien#define xsh_addr (clazz == ELFCLASS32 \ 151186691Sobrien ? (void *) &sh32 \ 15268349Sobrien : (void *) &sh64) 153186691Sobrien#define xsh_sizeof (clazz == ELFCLASS32 \ 154186691Sobrien ? sizeof sh32 \ 155111658Sobrien : sizeof sh64) 156186691Sobrien#define xsh_size (clazz == ELFCLASS32 \ 157186691Sobrien ? elf_getu32(swap, sh32.sh_size) \ 158186691Sobrien : elf_getu64(swap, sh64.sh_size)) 159234449Sobrien#define xsh_offset (off_t)(clazz == ELFCLASS32 \ 160186691Sobrien ? elf_getu32(swap, sh32.sh_offset) \ 161186691Sobrien : elf_getu64(swap, sh64.sh_offset)) 162186691Sobrien#define xsh_type (clazz == ELFCLASS32 \ 163186691Sobrien ? elf_getu32(swap, sh32.sh_type) \ 164186691Sobrien : elf_getu32(swap, sh64.sh_type)) 165186691Sobrien#define xph_addr (clazz == ELFCLASS32 \ 166186691Sobrien ? (void *) &ph32 \ 16768349Sobrien : (void *) &ph64) 168186691Sobrien#define xph_sizeof (clazz == ELFCLASS32 \ 169186691Sobrien ? sizeof ph32 \ 170111658Sobrien : sizeof ph64) 171186691Sobrien#define xph_type (clazz == ELFCLASS32 \ 172186691Sobrien ? elf_getu32(swap, ph32.p_type) \ 173186691Sobrien : elf_getu32(swap, ph64.p_type)) 174186691Sobrien#define xph_offset (off_t)(clazz == ELFCLASS32 \ 175186691Sobrien ? elf_getu32(swap, ph32.p_offset) \ 176186691Sobrien : elf_getu64(swap, ph64.p_offset)) 177186691Sobrien#define xph_align (size_t)((clazz == ELFCLASS32 \ 178186691Sobrien ? (off_t) (ph32.p_align ? \ 179186691Sobrien elf_getu32(swap, ph32.p_align) : 4) \ 180186691Sobrien : (off_t) (ph64.p_align ? \ 181186691Sobrien elf_getu64(swap, ph64.p_align) : 4))) 182186691Sobrien#define xph_filesz (size_t)((clazz == ELFCLASS32 \ 183186691Sobrien ? elf_getu32(swap, ph32.p_filesz) \ 184186691Sobrien : elf_getu64(swap, ph64.p_filesz))) 185186691Sobrien#define xnh_addr (clazz == ELFCLASS32 \ 186186691Sobrien ? (void *) &nh32 \ 187159764Sobrien : (void *) &nh64) 188186691Sobrien#define xph_memsz (size_t)((clazz == ELFCLASS32 \ 189186691Sobrien ? elf_getu32(swap, ph32.p_memsz) \ 190186691Sobrien : elf_getu64(swap, ph64.p_memsz))) 191186691Sobrien#define xnh_sizeof (clazz == ELFCLASS32 \ 192186691Sobrien ? sizeof nh32 \ 193133359Sobrien : sizeof nh64) 194186691Sobrien#define xnh_type (clazz == ELFCLASS32 \ 195186691Sobrien ? elf_getu32(swap, nh32.n_type) \ 196186691Sobrien : elf_getu32(swap, nh64.n_type)) 197186691Sobrien#define xnh_namesz (clazz == ELFCLASS32 \ 198186691Sobrien ? elf_getu32(swap, nh32.n_namesz) \ 199186691Sobrien : elf_getu32(swap, nh64.n_namesz)) 200186691Sobrien#define xnh_descsz (clazz == ELFCLASS32 \ 201186691Sobrien ? elf_getu32(swap, nh32.n_descsz) \ 202186691Sobrien : elf_getu32(swap, nh64.n_descsz)) 203186691Sobrien#define prpsoffsets(i) (clazz == ELFCLASS32 \ 204186691Sobrien ? prpsoffsets32[i] \ 20568349Sobrien : prpsoffsets64[i]) 206186691Sobrien#define xcap_addr (clazz == ELFCLASS32 \ 207186691Sobrien ? (void *) &cap32 \ 208186691Sobrien : (void *) &cap64) 209186691Sobrien#define xcap_sizeof (clazz == ELFCLASS32 \ 210186691Sobrien ? sizeof cap32 \ 211186691Sobrien : sizeof cap64) 212186691Sobrien#define xcap_tag (clazz == ELFCLASS32 \ 213186691Sobrien ? elf_getu32(swap, cap32.c_tag) \ 214186691Sobrien : elf_getu64(swap, cap64.c_tag)) 215186691Sobrien#define xcap_val (clazz == ELFCLASS32 \ 216186691Sobrien ? elf_getu32(swap, cap32.c_un.c_val) \ 217186691Sobrien : elf_getu64(swap, cap64.c_un.c_val)) 21868349Sobrien 21968349Sobrien#ifdef ELFCORE 220186691Sobrien/* 221186691Sobrien * Try larger offsets first to avoid false matches 222186691Sobrien * from earlier data that happen to look like strings. 223186691Sobrien */ 224186691Sobrienstatic const size_t prpsoffsets32[] = { 225186691Sobrien#ifdef USE_NT_PSINFO 226186691Sobrien 104, /* SunOS 5.x (command line) */ 227186691Sobrien 88, /* SunOS 5.x (short name) */ 228186691Sobrien#endif /* USE_NT_PSINFO */ 229186691Sobrien 230186691Sobrien 100, /* SunOS 5.x (command line) */ 231186691Sobrien 84, /* SunOS 5.x (short name) */ 232186691Sobrien 233186691Sobrien 44, /* Linux (command line) */ 234186691Sobrien 28, /* Linux 2.0.36 (short name) */ 235186691Sobrien 23668349Sobrien 8, /* FreeBSD */ 23768349Sobrien}; 23868349Sobrien 239186691Sobrienstatic const size_t prpsoffsets64[] = { 240186691Sobrien#ifdef USE_NT_PSINFO 241186691Sobrien 152, /* SunOS 5.x (command line) */ 242186691Sobrien 136, /* SunOS 5.x (short name) */ 243186691Sobrien#endif /* USE_NT_PSINFO */ 244186691Sobrien 245186691Sobrien 136, /* SunOS 5.x, 64-bit (command line) */ 246186691Sobrien 120, /* SunOS 5.x, 64-bit (short name) */ 247186691Sobrien 248186691Sobrien 56, /* Linux (command line) */ 249186691Sobrien 40, /* Linux (tested on core from 2.4.x, short name) */ 250186691Sobrien 251159764Sobrien 16, /* FreeBSD, 64-bit */ 25268349Sobrien}; 25368349Sobrien 25468349Sobrien#define NOFFSETS32 (sizeof prpsoffsets32 / sizeof prpsoffsets32[0]) 25568349Sobrien#define NOFFSETS64 (sizeof prpsoffsets64 / sizeof prpsoffsets64[0]) 25668349Sobrien 257186691Sobrien#define NOFFSETS (clazz == ELFCLASS32 ? NOFFSETS32 : NOFFSETS64) 25868349Sobrien 25968349Sobrien/* 26068349Sobrien * Look through the program headers of an executable image, searching 26168349Sobrien * for a PT_NOTE section of type NT_PRPSINFO, with a name "CORE" or 26268349Sobrien * "FreeBSD"; if one is found, try looking in various places in its 26368349Sobrien * contents for a 16-character string containing only printable 26468349Sobrien * characters - if found, that string should be the name of the program 26568349Sobrien * that dropped core. Note: right after that 16-character string is, 26668349Sobrien * at least in SunOS 5.x (and possibly other SVR4-flavored systems) and 26768349Sobrien * Linux, a longer string (80 characters, in 5.x, probably other 26868349Sobrien * SVR4-flavored systems, and Linux) containing the start of the 26968349Sobrien * command line for that program. 27068349Sobrien * 271186691Sobrien * SunOS 5.x core files contain two PT_NOTE sections, with the types 272186691Sobrien * NT_PRPSINFO (old) and NT_PSINFO (new). These structs contain the 273186691Sobrien * same info about the command name and command line, so it probably 274186691Sobrien * isn't worthwhile to look for NT_PSINFO, but the offsets are provided 275186691Sobrien * above (see USE_NT_PSINFO), in case we ever decide to do so. The 276186691Sobrien * NT_PRPSINFO and NT_PSINFO sections are always in order and adjacent; 277186691Sobrien * the SunOS 5.x file command relies on this (and prefers the latter). 278186691Sobrien * 27968349Sobrien * The signal number probably appears in a section of type NT_PRSTATUS, 28068349Sobrien * but that's also rather OS-dependent, in ways that are harder to 28168349Sobrien * dissect with heuristics, so I'm not bothering with the signal number. 28268349Sobrien * (I suppose the signal number could be of interest in situations where 28368349Sobrien * you don't have the binary of the program that dropped core; if you 28468349Sobrien * *do* have that binary, the debugger will probably tell you what 28568349Sobrien * signal it was.) 28668349Sobrien */ 287103373Sobrien 288103373Sobrien#define OS_STYLE_SVR4 0 289103373Sobrien#define OS_STYLE_FREEBSD 1 290103373Sobrien#define OS_STYLE_NETBSD 2 291103373Sobrien 292186691Sobrienprivate const char os_style_names[][8] = { 293103373Sobrien "SVR4", 294103373Sobrien "FreeBSD", 295103373Sobrien "NetBSD", 296103373Sobrien}; 297103373Sobrien 298234449Sobrien#define FLAGS_DID_CORE 0x01 299234449Sobrien#define FLAGS_DID_NOTE 0x02 300234449Sobrien#define FLAGS_DID_BUILD_ID 0x04 301234449Sobrien#define FLAGS_DID_CORE_STYLE 0x08 302234449Sobrien#define FLAGS_IS_CORE 0x10 303159764Sobrien 304133359Sobrienprivate int 305186691Sobriendophn_core(struct magic_set *ms, int clazz, int swap, int fd, off_t off, 306169942Sobrien int num, size_t size, off_t fsize, int *flags) 30768349Sobrien{ 30868349Sobrien Elf32_Phdr ph32; 30968349Sobrien Elf64_Phdr ph64; 310133359Sobrien size_t offset; 311133359Sobrien unsigned char nbuf[BUFSIZ]; 312133359Sobrien ssize_t bufsize; 31368349Sobrien 314159764Sobrien if (size != xph_sizeof) { 315133359Sobrien if (file_printf(ms, ", corrupted program header size") == -1) 316133359Sobrien return -1; 317133359Sobrien return 0; 318133359Sobrien } 319159764Sobrien 32068349Sobrien /* 32168349Sobrien * Loop through all the program headers. 32268349Sobrien */ 32368349Sobrien for ( ; num; num--) { 324234449Sobrien if (lseek(fd, off, SEEK_SET) == (off_t)-1) { 325133359Sobrien file_badseek(ms); 326133359Sobrien return -1; 327133359Sobrien } 328159764Sobrien if (read(fd, xph_addr, xph_sizeof) == -1) { 329133359Sobrien file_badread(ms); 330133359Sobrien return -1; 331133359Sobrien } 332234449Sobrien off += size; 333234449Sobrien 334169942Sobrien if (xph_offset > fsize) { 335234449Sobrien /* Perhaps warn here */ 336169942Sobrien continue; 337169942Sobrien } 338169942Sobrien 339159764Sobrien if (xph_type != PT_NOTE) 34068349Sobrien continue; 34168349Sobrien 34268349Sobrien /* 34368349Sobrien * This is a PT_NOTE section; loop through all the notes 34468349Sobrien * in the section. 34568349Sobrien */ 346169962Sobrien if (lseek(fd, xph_offset, SEEK_SET) == (off_t)-1) { 347133359Sobrien file_badseek(ms); 348133359Sobrien return -1; 349133359Sobrien } 350139368Sobrien bufsize = read(fd, nbuf, 351159764Sobrien ((xph_filesz < sizeof(nbuf)) ? xph_filesz : sizeof(nbuf))); 352133359Sobrien if (bufsize == -1) { 353133359Sobrien file_badread(ms); 354133359Sobrien return -1; 355133359Sobrien } 35668349Sobrien offset = 0; 35768349Sobrien for (;;) { 358133359Sobrien if (offset >= (size_t)bufsize) 35968349Sobrien break; 360133359Sobrien offset = donote(ms, nbuf, offset, (size_t)bufsize, 361186691Sobrien clazz, swap, 4, flags); 362133359Sobrien if (offset == 0) 363133359Sobrien break; 36468349Sobrien 365133359Sobrien } 366133359Sobrien } 367133359Sobrien return 0; 368133359Sobrien} 369133359Sobrien#endif 370133359Sobrien 371133359Sobrienprivate size_t 372186691Sobriendonote(struct magic_set *ms, void *vbuf, size_t offset, size_t size, 373186691Sobrien int clazz, int swap, size_t align, int *flags) 374133359Sobrien{ 375133359Sobrien Elf32_Nhdr nh32; 376133359Sobrien Elf64_Nhdr nh64; 377133359Sobrien size_t noff, doff; 378133359Sobrien#ifdef ELFCORE 379133359Sobrien int os_style = -1; 380133359Sobrien#endif 381133359Sobrien uint32_t namesz, descsz; 382186691Sobrien unsigned char *nbuf = CAST(unsigned char *, vbuf); 383133359Sobrien 384159764Sobrien (void)memcpy(xnh_addr, &nbuf[offset], xnh_sizeof); 385159764Sobrien offset += xnh_sizeof; 386133359Sobrien 387159764Sobrien namesz = xnh_namesz; 388159764Sobrien descsz = xnh_descsz; 389133359Sobrien if ((namesz == 0) && (descsz == 0)) { 390133359Sobrien /* 391133359Sobrien * We're out of note headers. 392133359Sobrien */ 393169942Sobrien return (offset >= size) ? offset : size; 394133359Sobrien } 395133359Sobrien 396133359Sobrien if (namesz & 0x80000000) { 397133359Sobrien (void)file_printf(ms, ", bad note name size 0x%lx", 398133359Sobrien (unsigned long)namesz); 399275671Sdelphij return 0; 400133359Sobrien } 401133359Sobrien 402133359Sobrien if (descsz & 0x80000000) { 403133359Sobrien (void)file_printf(ms, ", bad note description size 0x%lx", 404133359Sobrien (unsigned long)descsz); 405275671Sdelphij return 0; 406133359Sobrien } 407133359Sobrien 408133359Sobrien 409133359Sobrien noff = offset; 410133359Sobrien doff = ELF_ALIGN(offset + namesz); 411133359Sobrien 412133359Sobrien if (offset + namesz > size) { 413133359Sobrien /* 414133359Sobrien * We're past the end of the buffer. 415133359Sobrien */ 416133359Sobrien return doff; 417133359Sobrien } 418133359Sobrien 419133359Sobrien offset = ELF_ALIGN(doff + descsz); 420139368Sobrien if (doff + descsz > size) { 421169942Sobrien /* 422169942Sobrien * We're past the end of the buffer. 423169942Sobrien */ 424169942Sobrien return (offset >= size) ? offset : size; 425133359Sobrien } 426133359Sobrien 427234449Sobrien if ((*flags & (FLAGS_DID_NOTE|FLAGS_DID_BUILD_ID)) == 428234449Sobrien (FLAGS_DID_NOTE|FLAGS_DID_BUILD_ID)) 429169942Sobrien goto core; 430169942Sobrien 431133359Sobrien if (namesz == 4 && strcmp((char *)&nbuf[noff], "GNU") == 0 && 432159764Sobrien xnh_type == NT_GNU_VERSION && descsz == 16) { 433133359Sobrien uint32_t desc[4]; 434133359Sobrien (void)memcpy(desc, &nbuf[doff], sizeof(desc)); 435133359Sobrien 436133359Sobrien if (file_printf(ms, ", for GNU/") == -1) 437133359Sobrien return size; 438186691Sobrien switch (elf_getu32(swap, desc[0])) { 439133359Sobrien case GNU_OS_LINUX: 440133359Sobrien if (file_printf(ms, "Linux") == -1) 441133359Sobrien return size; 442133359Sobrien break; 443133359Sobrien case GNU_OS_HURD: 444133359Sobrien if (file_printf(ms, "Hurd") == -1) 445133359Sobrien return size; 446133359Sobrien break; 447133359Sobrien case GNU_OS_SOLARIS: 448133359Sobrien if (file_printf(ms, "Solaris") == -1) 449133359Sobrien return size; 450133359Sobrien break; 451186691Sobrien case GNU_OS_KFREEBSD: 452186691Sobrien if (file_printf(ms, "kFreeBSD") == -1) 453186691Sobrien return size; 454186691Sobrien break; 455186691Sobrien case GNU_OS_KNETBSD: 456186691Sobrien if (file_printf(ms, "kNetBSD") == -1) 457186691Sobrien return size; 458186691Sobrien break; 459133359Sobrien default: 460133359Sobrien if (file_printf(ms, "<unknown>") == -1) 461133359Sobrien return size; 462133359Sobrien } 463186691Sobrien if (file_printf(ms, " %d.%d.%d", elf_getu32(swap, desc[1]), 464186691Sobrien elf_getu32(swap, desc[2]), elf_getu32(swap, desc[3])) == -1) 465133359Sobrien return size; 466169942Sobrien *flags |= FLAGS_DID_NOTE; 467133359Sobrien return size; 468133359Sobrien } 469133359Sobrien 470234449Sobrien if (namesz == 4 && strcmp((char *)&nbuf[noff], "GNU") == 0 && 471234449Sobrien xnh_type == NT_GNU_BUILD_ID && (descsz == 16 || descsz == 20)) { 472234449Sobrien uint32_t desc[5], i; 473234449Sobrien if (file_printf(ms, ", BuildID[%s]=0x", descsz == 16 ? "md5/uuid" : 474234449Sobrien "sha1") == -1) 475234449Sobrien return size; 476234449Sobrien (void)memcpy(desc, &nbuf[doff], descsz); 477234449Sobrien for (i = 0; i < descsz >> 2; i++) 478234449Sobrien if (file_printf(ms, "%.8x", desc[i]) == -1) 479234449Sobrien return size; 480234449Sobrien *flags |= FLAGS_DID_BUILD_ID; 481234449Sobrien } 482234449Sobrien 483133359Sobrien if (namesz == 7 && strcmp((char *)&nbuf[noff], "NetBSD") == 0 && 484159764Sobrien xnh_type == NT_NETBSD_VERSION && descsz == 4) { 485133359Sobrien uint32_t desc; 486133359Sobrien (void)memcpy(&desc, &nbuf[doff], sizeof(desc)); 487186691Sobrien desc = elf_getu32(swap, desc); 488133359Sobrien 489133359Sobrien if (file_printf(ms, ", for NetBSD") == -1) 490133359Sobrien return size; 491133359Sobrien /* 492133359Sobrien * The version number used to be stuck as 199905, and was thus 493133359Sobrien * basically content-free. Newer versions of NetBSD have fixed 494133359Sobrien * this and now use the encoding of __NetBSD_Version__: 495133359Sobrien * 496133359Sobrien * MMmmrrpp00 497133359Sobrien * 498133359Sobrien * M = major version 499133359Sobrien * m = minor version 500133359Sobrien * r = release ["",A-Z,Z[A-Z] but numeric] 501133359Sobrien * p = patchlevel 502133359Sobrien */ 503133359Sobrien if (desc > 100000000U) { 504169942Sobrien uint32_t ver_patch = (desc / 100) % 100; 505169942Sobrien uint32_t ver_rel = (desc / 10000) % 100; 506169942Sobrien uint32_t ver_min = (desc / 1000000) % 100; 507169942Sobrien uint32_t ver_maj = desc / 100000000; 508133359Sobrien 509133359Sobrien if (file_printf(ms, " %u.%u", ver_maj, ver_min) == -1) 510133359Sobrien return size; 511133359Sobrien if (ver_rel == 0 && ver_patch != 0) { 512133359Sobrien if (file_printf(ms, ".%u", ver_patch) == -1) 513133359Sobrien return size; 514133359Sobrien } else if (ver_rel != 0) { 515133359Sobrien while (ver_rel > 26) { 516169942Sobrien if (file_printf(ms, "Z") == -1) 517169942Sobrien return size; 518133359Sobrien ver_rel -= 26; 519133359Sobrien } 520169942Sobrien if (file_printf(ms, "%c", 'A' + ver_rel - 1) 521169942Sobrien == -1) 522169942Sobrien return size; 52368349Sobrien } 524133359Sobrien } 525169942Sobrien *flags |= FLAGS_DID_NOTE; 526133359Sobrien return size; 527133359Sobrien } 52868349Sobrien 529133359Sobrien if (namesz == 8 && strcmp((char *)&nbuf[noff], "FreeBSD") == 0 && 530159764Sobrien xnh_type == NT_FREEBSD_VERSION && descsz == 4) { 531133359Sobrien uint32_t desc; 532133359Sobrien (void)memcpy(&desc, &nbuf[doff], sizeof(desc)); 533186691Sobrien desc = elf_getu32(swap, desc); 534133359Sobrien if (file_printf(ms, ", for FreeBSD") == -1) 535133359Sobrien return size; 53668349Sobrien 537133359Sobrien /* 538133359Sobrien * Contents is __FreeBSD_version, whose relation to OS 539139368Sobrien * versions is defined by a huge table in the Porter's 540139368Sobrien * Handbook. This is the general scheme: 541139368Sobrien * 542139368Sobrien * Releases: 543139368Sobrien * Mmp000 (before 4.10) 544139368Sobrien * Mmi0p0 (before 5.0) 545139368Sobrien * Mmm0p0 546139368Sobrien * 547139368Sobrien * Development branches: 548139368Sobrien * Mmpxxx (before 4.6) 549139368Sobrien * Mmp1xx (before 4.10) 550139368Sobrien * Mmi1xx (before 5.0) 551139368Sobrien * M000xx (pre-M.0) 552139368Sobrien * Mmm1xx 553139368Sobrien * 554139368Sobrien * M = major version 555139368Sobrien * m = minor version 556139368Sobrien * i = minor version increment (491000 -> 4.10) 557139368Sobrien * p = patchlevel 558139368Sobrien * x = revision 559139368Sobrien * 560139368Sobrien * The first release of FreeBSD to use ELF by default 561139368Sobrien * was version 3.0. 562133359Sobrien */ 563139368Sobrien if (desc == 460002) { 564139368Sobrien if (file_printf(ms, " 4.6.2") == -1) 565139368Sobrien return size; 566139368Sobrien } else if (desc < 460100) { 567139368Sobrien if (file_printf(ms, " %d.%d", desc / 100000, 568139368Sobrien desc / 10000 % 10) == -1) 569139368Sobrien return size; 570139368Sobrien if (desc / 1000 % 10 > 0) 571139368Sobrien if (file_printf(ms, ".%d", desc / 1000 % 10) 572139368Sobrien == -1) 573133359Sobrien return size; 574139368Sobrien if ((desc % 1000 > 0) || (desc % 100000 == 0)) 575139368Sobrien if (file_printf(ms, " (%d)", desc) == -1) 576133359Sobrien return size; 577139368Sobrien } else if (desc < 500000) { 578139368Sobrien if (file_printf(ms, " %d.%d", desc / 100000, 579139368Sobrien desc / 10000 % 10 + desc / 1000 % 10) == -1) 580139368Sobrien return size; 581139368Sobrien if (desc / 100 % 10 > 0) { 582139368Sobrien if (file_printf(ms, " (%d)", desc) == -1) 583139368Sobrien return size; 584139368Sobrien } else if (desc / 10 % 10 > 0) { 585139368Sobrien if (file_printf(ms, ".%d", desc / 10 % 10) 586139368Sobrien == -1) 587139368Sobrien return size; 588103373Sobrien } 589133359Sobrien } else { 590133359Sobrien if (file_printf(ms, " %d.%d", desc / 100000, 591133359Sobrien desc / 1000 % 100) == -1) 592133359Sobrien return size; 593139368Sobrien if ((desc / 100 % 10 > 0) || 594139368Sobrien (desc % 100000 / 100 == 0)) { 595139368Sobrien if (file_printf(ms, " (%d)", desc) == -1) 596133359Sobrien return size; 597139368Sobrien } else if (desc / 10 % 10 > 0) { 598139368Sobrien if (file_printf(ms, ".%d", desc / 10 % 10) 599139368Sobrien == -1) 600133359Sobrien return size; 601133359Sobrien } 602133359Sobrien } 603169942Sobrien *flags |= FLAGS_DID_NOTE; 604133359Sobrien return size; 605133359Sobrien } 606103373Sobrien 607133359Sobrien if (namesz == 8 && strcmp((char *)&nbuf[noff], "OpenBSD") == 0 && 608159764Sobrien xnh_type == NT_OPENBSD_VERSION && descsz == 4) { 609133359Sobrien if (file_printf(ms, ", for OpenBSD") == -1) 610133359Sobrien return size; 611133359Sobrien /* Content of note is always 0 */ 612169942Sobrien *flags |= FLAGS_DID_NOTE; 613133359Sobrien return size; 614133359Sobrien } 615103373Sobrien 616159764Sobrien if (namesz == 10 && strcmp((char *)&nbuf[noff], "DragonFly") == 0 && 617159764Sobrien xnh_type == NT_DRAGONFLY_VERSION && descsz == 4) { 618159764Sobrien uint32_t desc; 619159764Sobrien if (file_printf(ms, ", for DragonFly") == -1) 620159764Sobrien return size; 621159764Sobrien (void)memcpy(&desc, &nbuf[doff], sizeof(desc)); 622186691Sobrien desc = elf_getu32(swap, desc); 623159764Sobrien if (file_printf(ms, " %d.%d.%d", desc / 100000, 624159764Sobrien desc / 10000 % 10, desc % 10000) == -1) 625159764Sobrien return size; 626169942Sobrien *flags |= FLAGS_DID_NOTE; 627159764Sobrien return size; 628159764Sobrien } 629159764Sobrien 630169942Sobriencore: 631133359Sobrien /* 632133359Sobrien * Sigh. The 2.0.36 kernel in Debian 2.1, at 633133359Sobrien * least, doesn't correctly implement name 634133359Sobrien * sections, in core dumps, as specified by 635133359Sobrien * the "Program Linking" section of "UNIX(R) System 636133359Sobrien * V Release 4 Programmer's Guide: ANSI C and 637133359Sobrien * Programming Support Tools", because my copy 638133359Sobrien * clearly says "The first 'namesz' bytes in 'name' 639133359Sobrien * contain a *null-terminated* [emphasis mine] 640133359Sobrien * character representation of the entry's owner 641133359Sobrien * or originator", but the 2.0.36 kernel code 642133359Sobrien * doesn't include the terminating null in the 643133359Sobrien * name.... 644133359Sobrien */ 645133359Sobrien if ((namesz == 4 && strncmp((char *)&nbuf[noff], "CORE", 4) == 0) || 646133359Sobrien (namesz == 5 && strcmp((char *)&nbuf[noff], "CORE") == 0)) { 647133359Sobrien os_style = OS_STYLE_SVR4; 648133359Sobrien } 649133359Sobrien 650133359Sobrien if ((namesz == 8 && strcmp((char *)&nbuf[noff], "FreeBSD") == 0)) { 651133359Sobrien os_style = OS_STYLE_FREEBSD; 652133359Sobrien } 653133359Sobrien 654133359Sobrien if ((namesz >= 11 && strncmp((char *)&nbuf[noff], "NetBSD-CORE", 11) 655133359Sobrien == 0)) { 656133359Sobrien os_style = OS_STYLE_NETBSD; 657133359Sobrien } 658133359Sobrien 659133359Sobrien#ifdef ELFCORE 660169942Sobrien if ((*flags & FLAGS_DID_CORE) != 0) 661169942Sobrien return size; 662169942Sobrien 663175296Sobrien if (os_style != -1 && (*flags & FLAGS_DID_CORE_STYLE) == 0) { 664169942Sobrien if (file_printf(ms, ", %s-style", os_style_names[os_style]) 665169942Sobrien == -1) 666169942Sobrien return size; 667175296Sobrien *flags |= FLAGS_DID_CORE_STYLE; 668159764Sobrien } 669133359Sobrien 670159764Sobrien switch (os_style) { 671159764Sobrien case OS_STYLE_NETBSD: 672159764Sobrien if (xnh_type == NT_NETBSD_CORE_PROCINFO) { 673159764Sobrien uint32_t signo; 674159764Sobrien /* 675159764Sobrien * Extract the program name. It is at 676159764Sobrien * offset 0x7c, and is up to 32-bytes, 677159764Sobrien * including the terminating NUL. 678159764Sobrien */ 679159764Sobrien if (file_printf(ms, ", from '%.31s'", 680159764Sobrien &nbuf[doff + 0x7c]) == -1) 681159764Sobrien return size; 682159764Sobrien 683159764Sobrien /* 684159764Sobrien * Extract the signal number. It is at 685159764Sobrien * offset 0x08. 686159764Sobrien */ 687159764Sobrien (void)memcpy(&signo, &nbuf[doff + 0x08], 688159764Sobrien sizeof(signo)); 689159764Sobrien if (file_printf(ms, " (signal %u)", 690186691Sobrien elf_getu32(swap, signo)) == -1) 691159764Sobrien return size; 692175296Sobrien *flags |= FLAGS_DID_CORE; 693133359Sobrien return size; 694159764Sobrien } 695159764Sobrien break; 696133359Sobrien 697159764Sobrien default: 698234449Sobrien if (xnh_type == NT_PRPSINFO && *flags & FLAGS_IS_CORE) { 699159764Sobrien size_t i, j; 700159764Sobrien unsigned char c; 701159764Sobrien /* 702159764Sobrien * Extract the program name. We assume 703159764Sobrien * it to be 16 characters (that's what it 704159764Sobrien * is in SunOS 5.x and Linux). 705159764Sobrien * 706159764Sobrien * Unfortunately, it's at a different offset 707175296Sobrien * in various OSes, so try multiple offsets. 708159764Sobrien * If the characters aren't all printable, 709159764Sobrien * reject it. 710159764Sobrien */ 711159764Sobrien for (i = 0; i < NOFFSETS; i++) { 712175296Sobrien unsigned char *cname, *cp; 713159764Sobrien size_t reloffset = prpsoffsets(i); 714159764Sobrien size_t noffset = doff + reloffset; 715234449Sobrien size_t k; 716159764Sobrien for (j = 0; j < 16; j++, noffset++, 717159764Sobrien reloffset++) { 71868349Sobrien /* 719159764Sobrien * Make sure we're not past 720159764Sobrien * the end of the buffer; if 721159764Sobrien * we are, just give up. 72268349Sobrien */ 723159764Sobrien if (noffset >= size) 724133359Sobrien goto tryanother; 725159764Sobrien 726133359Sobrien /* 727159764Sobrien * Make sure we're not past 728159764Sobrien * the end of the contents; 729159764Sobrien * if we are, this obviously 730159764Sobrien * isn't the right offset. 731133359Sobrien */ 732159764Sobrien if (reloffset >= descsz) 733133359Sobrien goto tryanother; 734159764Sobrien 735159764Sobrien c = nbuf[noffset]; 736159764Sobrien if (c == '\0') { 737159764Sobrien /* 738159764Sobrien * A '\0' at the 739159764Sobrien * beginning is 740159764Sobrien * obviously wrong. 741159764Sobrien * Any other '\0' 742159764Sobrien * means we're done. 743159764Sobrien */ 744159764Sobrien if (j == 0) 745159764Sobrien goto tryanother; 746159764Sobrien else 747159764Sobrien break; 748159764Sobrien } else { 749159764Sobrien /* 750159764Sobrien * A nonprintable 751159764Sobrien * character is also 752159764Sobrien * wrong. 753159764Sobrien */ 754159764Sobrien if (!isprint(c) || isquote(c)) 755159764Sobrien goto tryanother; 756159764Sobrien } 75768349Sobrien } 758159764Sobrien /* 759159764Sobrien * Well, that worked. 760159764Sobrien */ 761234449Sobrien 762234449Sobrien /* 763234449Sobrien * Try next offsets, in case this match is 764234449Sobrien * in the middle of a string. 765234449Sobrien */ 766234449Sobrien for (k = i + 1 ; k < NOFFSETS ; k++) { 767234449Sobrien size_t no; 768234449Sobrien int adjust = 1; 769234449Sobrien if (prpsoffsets(k) >= prpsoffsets(i)) 770234449Sobrien continue; 771234449Sobrien for (no = doff + prpsoffsets(k); 772234449Sobrien no < doff + prpsoffsets(i); no++) 773234449Sobrien adjust = adjust 774234449Sobrien && isprint(nbuf[no]); 775234449Sobrien if (adjust) 776234449Sobrien i = k; 777234449Sobrien } 778234449Sobrien 779175296Sobrien cname = (unsigned char *) 780175296Sobrien &nbuf[doff + prpsoffsets(i)]; 781175296Sobrien for (cp = cname; *cp && isprint(*cp); cp++) 782175296Sobrien continue; 783186691Sobrien /* 784186691Sobrien * Linux apparently appends a space at the end 785186691Sobrien * of the command line: remove it. 786186691Sobrien */ 787186691Sobrien while (cp > cname && isspace(cp[-1])) 788175296Sobrien cp--; 789175296Sobrien if (file_printf(ms, ", from '%.*s'", 790175296Sobrien (int)(cp - cname), cname) == -1) 791159764Sobrien return size; 792175296Sobrien *flags |= FLAGS_DID_CORE; 793133359Sobrien return size; 794133359Sobrien 795159764Sobrien tryanother: 796159764Sobrien ; 797159764Sobrien } 79868349Sobrien } 799159764Sobrien break; 80068349Sobrien } 801133359Sobrien#endif 802133359Sobrien return offset; 80368349Sobrien} 80468349Sobrien 805186691Sobrien/* SunOS 5.x hardware capability descriptions */ 806186691Sobrientypedef struct cap_desc { 807186691Sobrien uint64_t cd_mask; 808186691Sobrien const char *cd_name; 809186691Sobrien} cap_desc_t; 810186691Sobrien 811186691Sobrienstatic const cap_desc_t cap_desc_sparc[] = { 812186691Sobrien { AV_SPARC_MUL32, "MUL32" }, 813186691Sobrien { AV_SPARC_DIV32, "DIV32" }, 814186691Sobrien { AV_SPARC_FSMULD, "FSMULD" }, 815186691Sobrien { AV_SPARC_V8PLUS, "V8PLUS" }, 816186691Sobrien { AV_SPARC_POPC, "POPC" }, 817186691Sobrien { AV_SPARC_VIS, "VIS" }, 818186691Sobrien { AV_SPARC_VIS2, "VIS2" }, 819186691Sobrien { AV_SPARC_ASI_BLK_INIT, "ASI_BLK_INIT" }, 820186691Sobrien { AV_SPARC_FMAF, "FMAF" }, 821186691Sobrien { AV_SPARC_FJFMAU, "FJFMAU" }, 822186691Sobrien { AV_SPARC_IMA, "IMA" }, 823186691Sobrien { 0, NULL } 824186691Sobrien}; 825186691Sobrien 826186691Sobrienstatic const cap_desc_t cap_desc_386[] = { 827186691Sobrien { AV_386_FPU, "FPU" }, 828186691Sobrien { AV_386_TSC, "TSC" }, 829186691Sobrien { AV_386_CX8, "CX8" }, 830186691Sobrien { AV_386_SEP, "SEP" }, 831186691Sobrien { AV_386_AMD_SYSC, "AMD_SYSC" }, 832186691Sobrien { AV_386_CMOV, "CMOV" }, 833186691Sobrien { AV_386_MMX, "MMX" }, 834186691Sobrien { AV_386_AMD_MMX, "AMD_MMX" }, 835186691Sobrien { AV_386_AMD_3DNow, "AMD_3DNow" }, 836186691Sobrien { AV_386_AMD_3DNowx, "AMD_3DNowx" }, 837186691Sobrien { AV_386_FXSR, "FXSR" }, 838186691Sobrien { AV_386_SSE, "SSE" }, 839186691Sobrien { AV_386_SSE2, "SSE2" }, 840186691Sobrien { AV_386_PAUSE, "PAUSE" }, 841186691Sobrien { AV_386_SSE3, "SSE3" }, 842186691Sobrien { AV_386_MON, "MON" }, 843186691Sobrien { AV_386_CX16, "CX16" }, 844186691Sobrien { AV_386_AHF, "AHF" }, 845186691Sobrien { AV_386_TSCP, "TSCP" }, 846186691Sobrien { AV_386_AMD_SSE4A, "AMD_SSE4A" }, 847186691Sobrien { AV_386_POPCNT, "POPCNT" }, 848186691Sobrien { AV_386_AMD_LZCNT, "AMD_LZCNT" }, 849186691Sobrien { AV_386_SSSE3, "SSSE3" }, 850186691Sobrien { AV_386_SSE4_1, "SSE4.1" }, 851186691Sobrien { AV_386_SSE4_2, "SSE4.2" }, 852186691Sobrien { 0, NULL } 853186691Sobrien}; 854186691Sobrien 855133359Sobrienprivate int 856186691Sobriendoshn(struct magic_set *ms, int clazz, int swap, int fd, off_t off, int num, 857234449Sobrien size_t size, off_t fsize, int *flags, int mach) 85868349Sobrien{ 859133359Sobrien Elf32_Shdr sh32; 860133359Sobrien Elf64_Shdr sh64; 861159764Sobrien int stripped = 1; 862275671Sdelphij size_t nbadcap = 0; 863159764Sobrien void *nbuf; 864234449Sobrien off_t noff, coff; 865186691Sobrien uint64_t cap_hw1 = 0; /* SunOS 5.x hardware capabilites */ 866186691Sobrien uint64_t cap_sf1 = 0; /* SunOS 5.x software capabilites */ 867133359Sobrien 868159764Sobrien if (size != xsh_sizeof) { 869133359Sobrien if (file_printf(ms, ", corrupted section header size") == -1) 870133359Sobrien return -1; 871133359Sobrien return 0; 872133359Sobrien } 873133359Sobrien 874133359Sobrien for ( ; num; num--) { 875234449Sobrien if (lseek(fd, off, SEEK_SET) == (off_t)-1) { 876234449Sobrien file_badseek(ms); 877234449Sobrien return -1; 878234449Sobrien } 879159764Sobrien if (read(fd, xsh_addr, xsh_sizeof) == -1) { 880133359Sobrien file_badread(ms); 881133359Sobrien return -1; 882133359Sobrien } 883234449Sobrien off += size; 884234449Sobrien 885234449Sobrien /* Things we can determine before we seek */ 886159764Sobrien switch (xsh_type) { 887159764Sobrien case SHT_SYMTAB: 888159764Sobrien#if 0 889159764Sobrien case SHT_DYNSYM: 890159764Sobrien#endif 891159764Sobrien stripped = 0; 892159764Sobrien break; 893234449Sobrien default: 894234449Sobrien if (xsh_offset > fsize) { 895234449Sobrien /* Perhaps warn here */ 896234449Sobrien continue; 897234449Sobrien } 898234449Sobrien break; 899234449Sobrien } 900234449Sobrien 901234449Sobrien /* Things we can determine when we seek */ 902234449Sobrien switch (xsh_type) { 903159764Sobrien case SHT_NOTE: 904159764Sobrien if ((nbuf = malloc((size_t)xsh_size)) == NULL) { 905159764Sobrien file_error(ms, errno, "Cannot allocate memory" 906159764Sobrien " for note"); 907159764Sobrien return -1; 908159764Sobrien } 909159764Sobrien if ((noff = lseek(fd, (off_t)xsh_offset, SEEK_SET)) == 910159764Sobrien (off_t)-1) { 911159764Sobrien file_badread(ms); 912159764Sobrien free(nbuf); 913159764Sobrien return -1; 914159764Sobrien } 915159764Sobrien if (read(fd, nbuf, (size_t)xsh_size) != 916159764Sobrien (ssize_t)xsh_size) { 917159764Sobrien free(nbuf); 918159764Sobrien file_badread(ms); 919159764Sobrien return -1; 920159764Sobrien } 921159764Sobrien 922159764Sobrien noff = 0; 923159764Sobrien for (;;) { 924191771Sobrien if (noff >= (off_t)xsh_size) 925159764Sobrien break; 926159764Sobrien noff = donote(ms, nbuf, (size_t)noff, 927186691Sobrien (size_t)xsh_size, clazz, swap, 4, 928169942Sobrien flags); 929159764Sobrien if (noff == 0) 930159764Sobrien break; 931159764Sobrien } 932159764Sobrien free(nbuf); 933159764Sobrien break; 934186691Sobrien case SHT_SUNW_cap: 935275671Sdelphij if (nbadcap > 5) 936275671Sdelphij break; 937186691Sobrien if (lseek(fd, (off_t)xsh_offset, SEEK_SET) == 938186691Sobrien (off_t)-1) { 939234449Sobrien file_badseek(ms); 940186691Sobrien return -1; 941186691Sobrien } 942186691Sobrien coff = 0; 943186691Sobrien for (;;) { 944186691Sobrien Elf32_Cap cap32; 945186691Sobrien Elf64_Cap cap64; 946191771Sobrien char cbuf[/*CONSTCOND*/ 947191771Sobrien MAX(sizeof cap32, sizeof cap64)]; 948234449Sobrien if ((coff += xcap_sizeof) > (off_t)xsh_size) 949186691Sobrien break; 950186691Sobrien if (read(fd, cbuf, (size_t)xcap_sizeof) != 951186691Sobrien (ssize_t)xcap_sizeof) { 952186691Sobrien file_badread(ms); 953186691Sobrien return -1; 954186691Sobrien } 955186691Sobrien (void)memcpy(xcap_addr, cbuf, xcap_sizeof); 956186691Sobrien switch (xcap_tag) { 957186691Sobrien case CA_SUNW_NULL: 958186691Sobrien break; 959186691Sobrien case CA_SUNW_HW_1: 960186691Sobrien cap_hw1 |= xcap_val; 961186691Sobrien break; 962186691Sobrien case CA_SUNW_SF_1: 963186691Sobrien cap_sf1 |= xcap_val; 964186691Sobrien break; 965186691Sobrien default: 966186691Sobrien if (file_printf(ms, 967186691Sobrien ", with unknown capability " 968234449Sobrien "0x%" INT64_T_FORMAT "x = 0x%" 969234449Sobrien INT64_T_FORMAT "x", 970191771Sobrien (unsigned long long)xcap_tag, 971191771Sobrien (unsigned long long)xcap_val) == -1) 972186691Sobrien return -1; 973275671Sdelphij if (nbadcap++ > 2) 974275671Sdelphij coff = xsh_size; 975186691Sobrien break; 976186691Sobrien } 977186691Sobrien } 978186691Sobrien break; 979234449Sobrien 980234449Sobrien default: 981234449Sobrien break; 982133359Sobrien } 983133359Sobrien } 984159764Sobrien if (file_printf(ms, ", %sstripped", stripped ? "" : "not ") == -1) 985133359Sobrien return -1; 986186691Sobrien if (cap_hw1) { 987186691Sobrien const cap_desc_t *cdp; 988186691Sobrien switch (mach) { 989186691Sobrien case EM_SPARC: 990186691Sobrien case EM_SPARC32PLUS: 991186691Sobrien case EM_SPARCV9: 992186691Sobrien cdp = cap_desc_sparc; 993186691Sobrien break; 994186691Sobrien case EM_386: 995186691Sobrien case EM_IA_64: 996186691Sobrien case EM_AMD64: 997186691Sobrien cdp = cap_desc_386; 998186691Sobrien break; 999186691Sobrien default: 1000186691Sobrien cdp = NULL; 1001186691Sobrien break; 1002186691Sobrien } 1003186691Sobrien if (file_printf(ms, ", uses") == -1) 1004186691Sobrien return -1; 1005186691Sobrien if (cdp) { 1006186691Sobrien while (cdp->cd_name) { 1007186691Sobrien if (cap_hw1 & cdp->cd_mask) { 1008186691Sobrien if (file_printf(ms, 1009186691Sobrien " %s", cdp->cd_name) == -1) 1010186691Sobrien return -1; 1011186691Sobrien cap_hw1 &= ~cdp->cd_mask; 1012186691Sobrien } 1013186691Sobrien ++cdp; 1014186691Sobrien } 1015186691Sobrien if (cap_hw1) 1016186691Sobrien if (file_printf(ms, 1017234449Sobrien " unknown hardware capability 0x%" 1018234449Sobrien INT64_T_FORMAT "x", 1019191771Sobrien (unsigned long long)cap_hw1) == -1) 1020186691Sobrien return -1; 1021186691Sobrien } else { 1022186691Sobrien if (file_printf(ms, 1023234449Sobrien " hardware capability 0x%" INT64_T_FORMAT "x", 1024191771Sobrien (unsigned long long)cap_hw1) == -1) 1025186691Sobrien return -1; 1026186691Sobrien } 1027186691Sobrien } 1028186691Sobrien if (cap_sf1) { 1029186691Sobrien if (cap_sf1 & SF1_SUNW_FPUSED) { 1030186691Sobrien if (file_printf(ms, 1031186691Sobrien (cap_sf1 & SF1_SUNW_FPKNWN) 1032186691Sobrien ? ", uses frame pointer" 1033186691Sobrien : ", not known to use frame pointer") == -1) 1034186691Sobrien return -1; 1035186691Sobrien } 1036186691Sobrien cap_sf1 &= ~SF1_SUNW_MASK; 1037186691Sobrien if (cap_sf1) 1038186691Sobrien if (file_printf(ms, 1039234449Sobrien ", with unknown software capability 0x%" 1040234449Sobrien INT64_T_FORMAT "x", 1041191771Sobrien (unsigned long long)cap_sf1) == -1) 1042186691Sobrien return -1; 1043186691Sobrien } 1044133359Sobrien return 0; 1045133359Sobrien} 1046133359Sobrien 1047133359Sobrien/* 1048133359Sobrien * Look through the program headers of an executable image, searching 1049133359Sobrien * for a PT_INTERP section; if one is found, it's dynamically linked, 1050133359Sobrien * otherwise it's statically linked. 1051133359Sobrien */ 1052133359Sobrienprivate int 1053186691Sobriendophn_exec(struct magic_set *ms, int clazz, int swap, int fd, off_t off, 1054186691Sobrien int num, size_t size, off_t fsize, int *flags, int sh_num) 1055133359Sobrien{ 1056133359Sobrien Elf32_Phdr ph32; 1057133359Sobrien Elf64_Phdr ph64; 1058133359Sobrien const char *linking_style = "statically"; 1059133359Sobrien const char *shared_libraries = ""; 1060133359Sobrien unsigned char nbuf[BUFSIZ]; 1061234449Sobrien ssize_t bufsize; 1062133359Sobrien size_t offset, align; 1063169942Sobrien 1064159764Sobrien if (size != xph_sizeof) { 1065133359Sobrien if (file_printf(ms, ", corrupted program header size") == -1) 1066186691Sobrien return -1; 1067133359Sobrien return 0; 1068133359Sobrien } 1069169942Sobrien 1070133359Sobrien for ( ; num; num--) { 1071234449Sobrien if (lseek(fd, off, SEEK_SET) == (off_t)-1) { 1072234449Sobrien file_badseek(ms); 1073133359Sobrien return -1; 1074133359Sobrien } 1075169942Sobrien 1076234449Sobrien if (read(fd, xph_addr, xph_sizeof) == -1) { 1077234449Sobrien file_badread(ms); 1078133359Sobrien return -1; 1079133359Sobrien } 1080133359Sobrien 1081234449Sobrien off += size; 1082169942Sobrien 1083234449Sobrien /* Things we can determine before we seek */ 1084159764Sobrien switch (xph_type) { 1085133359Sobrien case PT_DYNAMIC: 1086133359Sobrien linking_style = "dynamically"; 1087133359Sobrien break; 1088133359Sobrien case PT_INTERP: 1089133359Sobrien shared_libraries = " (uses shared libs)"; 1090133359Sobrien break; 1091234449Sobrien default: 1092234449Sobrien if (xph_offset > fsize) { 1093234449Sobrien /* Maybe warn here? */ 1094234449Sobrien continue; 1095234449Sobrien } 1096234449Sobrien break; 1097234449Sobrien } 1098234449Sobrien 1099234449Sobrien /* Things we can determine when we seek */ 1100234449Sobrien switch (xph_type) { 1101133359Sobrien case PT_NOTE: 1102234449Sobrien if ((align = xph_align) & 0x80000000UL) { 1103133359Sobrien if (file_printf(ms, 1104133359Sobrien ", invalid note alignment 0x%lx", 1105133359Sobrien (unsigned long)align) == -1) 1106133359Sobrien return -1; 1107133359Sobrien align = 4; 1108133359Sobrien } 1109186691Sobrien if (sh_num) 1110186691Sobrien break; 1111133359Sobrien /* 1112133359Sobrien * This is a PT_NOTE section; loop through all the notes 1113133359Sobrien * in the section. 1114133359Sobrien */ 1115234449Sobrien if (lseek(fd, xph_offset, SEEK_SET) == (off_t)-1) { 1116133359Sobrien file_badseek(ms); 1117133359Sobrien return -1; 1118133359Sobrien } 1119159764Sobrien bufsize = read(fd, nbuf, ((xph_filesz < sizeof(nbuf)) ? 1120159764Sobrien xph_filesz : sizeof(nbuf))); 1121133359Sobrien if (bufsize == -1) { 1122133359Sobrien file_badread(ms); 1123133359Sobrien return -1; 1124133359Sobrien } 1125133359Sobrien offset = 0; 1126133359Sobrien for (;;) { 1127133359Sobrien if (offset >= (size_t)bufsize) 1128133359Sobrien break; 1129133359Sobrien offset = donote(ms, nbuf, offset, 1130186691Sobrien (size_t)bufsize, clazz, swap, align, 1131169942Sobrien flags); 1132133359Sobrien if (offset == 0) 1133133359Sobrien break; 1134133359Sobrien } 1135133359Sobrien break; 1136175296Sobrien default: 1137175296Sobrien break; 1138133359Sobrien } 1139133359Sobrien } 1140133359Sobrien if (file_printf(ms, ", %s linked%s", linking_style, shared_libraries) 1141133359Sobrien == -1) 1142133359Sobrien return -1; 1143133359Sobrien return 0; 1144133359Sobrien} 1145133359Sobrien 1146133359Sobrien 1147133359Sobrienprotected int 1148133359Sobrienfile_tryelf(struct magic_set *ms, int fd, const unsigned char *buf, 1149133359Sobrien size_t nbytes) 1150133359Sobrien{ 115168349Sobrien union { 1152103373Sobrien int32_t l; 1153103373Sobrien char c[sizeof (int32_t)]; 115468349Sobrien } u; 1155186691Sobrien int clazz; 115668349Sobrien int swap; 1157169942Sobrien struct stat st; 1158169942Sobrien off_t fsize; 1159169942Sobrien int flags = 0; 1160186691Sobrien Elf32_Ehdr elf32hdr; 1161186691Sobrien Elf64_Ehdr elf64hdr; 1162275671Sdelphij uint16_t type, phnum, shnum; 116368349Sobrien 1164191771Sobrien if (ms->flags & (MAGIC_MIME|MAGIC_APPLE)) 1165186691Sobrien return 0; 116668349Sobrien /* 116768349Sobrien * ELF executables have multiple section headers in arbitrary 116868349Sobrien * file locations and thus file(1) cannot determine it from easily. 116968349Sobrien * Instead we traverse thru all section headers until a symbol table 117068349Sobrien * one is found or else the binary is stripped. 1171186691Sobrien * Return immediately if it's not ELF (so we avoid pipe2file unless needed). 117268349Sobrien */ 117368349Sobrien if (buf[EI_MAG0] != ELFMAG0 117468349Sobrien || (buf[EI_MAG1] != ELFMAG1 && buf[EI_MAG1] != OLFMAG1) 117568349Sobrien || buf[EI_MAG2] != ELFMAG2 || buf[EI_MAG3] != ELFMAG3) 1176186691Sobrien return 0; 117768349Sobrien 1178186691Sobrien /* 1179186691Sobrien * If we cannot seek, it must be a pipe, socket or fifo. 1180186691Sobrien */ 1181186691Sobrien if((lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) && (errno == ESPIPE)) 1182186691Sobrien fd = file_pipe2file(ms, fd, buf, nbytes); 118368349Sobrien 1184186691Sobrien if (fstat(fd, &st) == -1) { 1185186691Sobrien file_badread(ms); 1186186691Sobrien return -1; 118768349Sobrien } 1188186691Sobrien fsize = st.st_size; 118968349Sobrien 1190186691Sobrien clazz = buf[EI_CLASS]; 119168349Sobrien 1192186691Sobrien switch (clazz) { 1193186691Sobrien case ELFCLASS32: 1194186691Sobrien#undef elf_getu 1195186691Sobrien#define elf_getu(a, b) elf_getu32(a, b) 1196186691Sobrien#undef elfhdr 1197186691Sobrien#define elfhdr elf32hdr 1198186691Sobrien#include "elfclass.h" 1199186691Sobrien case ELFCLASS64: 1200186691Sobrien#undef elf_getu 1201186691Sobrien#define elf_getu(a, b) elf_getu64(a, b) 1202186691Sobrien#undef elfhdr 1203186691Sobrien#define elfhdr elf64hdr 1204186691Sobrien#include "elfclass.h" 1205186691Sobrien default: 1206186691Sobrien if (file_printf(ms, ", unknown class %d", clazz) == -1) 1207186691Sobrien return -1; 1208186691Sobrien break; 120968349Sobrien } 1210133359Sobrien return 0; 121168349Sobrien} 121268349Sobrien#endif 1213