/[gentoo-projects]/pax-utils/scanelf.c
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Revision 1.141 Revision 1.229
1/* 1/*
2 * Copyright 2003-2006 Gentoo Foundation 2 * Copyright 2003-2007 Gentoo Foundation
3 * Distributed under the terms of the GNU General Public License v2 3 * Distributed under the terms of the GNU General Public License v2
4 * $Header: /var/cvsroot/gentoo-projects/pax-utils/Attic/scanelf.c,v 1.141 2006/04/23 15:24:38 flameeyes Exp $ 4 * $Header: /var/cvsroot/gentoo-projects/pax-utils/Attic/scanelf.c,v 1.229 2011/09/27 19:29:19 vapier Exp $
5 * 5 *
6 * Copyright 2003-2006 Ned Ludd - <solar@gentoo.org> 6 * Copyright 2003-2007 Ned Ludd - <solar@gentoo.org>
7 * Copyright 2004-2006 Mike Frysinger - <vapier@gentoo.org> 7 * Copyright 2004-2007 Mike Frysinger - <vapier@gentoo.org>
8 */ 8 */
9 9
10static const char *rcsid = "$Id: scanelf.c,v 1.229 2011/09/27 19:29:19 vapier Exp $";
11const char argv0[] = "scanelf";
12
10#include "paxinc.h" 13#include "paxinc.h"
11#if defined(__GLIBC__) || defined(__UCLIBC__)
12 #include <glob.h>
13#endif
14#if defined(__FreeBSD__) || defined(__DragonFly__)
15 #include <elf-hints.h>
16#endif
17
18static const char *rcsid = "$Id: scanelf.c,v 1.141 2006/04/23 15:24:38 flameeyes Exp $";
19#define argv0 "scanelf"
20 14
21#define IS_MODIFIER(c) (c == '%' || c == '#' || c == '+') 15#define IS_MODIFIER(c) (c == '%' || c == '#' || c == '+')
22 16
23#define do_state(option, flag) \
24 if (islower(option)) { \
25 flags &= ~PF_##flag; \
26 flags |= PF_NO##flag; \
27 } else { \
28 flags &= ~PF_NO##flag; \
29 flags |= PF_##flag; \
30 }
31
32
33/* prototypes */ 17/* prototypes */
34static int scanelf_elfobj(elfobj *elf); 18static int file_matches_list(const char *filename, char **matchlist);
35static int scanelf_elf(const char *filename, int fd, size_t len);
36static int scanelf_archive(const char *filename, int fd, size_t len);
37static void scanelf_file(const char *filename);
38static void scanelf_dir(const char *path);
39static void scanelf_ldpath(void);
40static void scanelf_envpath(void);
41static void usage(int status);
42static void parseargs(int argc, char *argv[]);
43static char *xstrdup(const char *s);
44static void *xmalloc(size_t size);
45static void xstrncat(char **dst, const char *src, size_t *curr_len, size_t n);
46#define xstrcat(dst,src,curr_len) xstrncat(dst,src,curr_len,0)
47static inline void xchrcat(char **dst, const char append, size_t *curr_len);
48 19
49/* variables to control behavior */ 20/* variables to control behavior */
50static char match_etypes[126] = ""; 21static char *match_etypes = NULL;
51static char *ldpaths[256]; 22static array_t _ldpaths = array_init_decl, *ldpaths = &_ldpaths;
52static char scan_ldpath = 0; 23static char scan_ldpath = 0;
53static char scan_envpath = 0; 24static char scan_envpath = 0;
54static char scan_symlink = 1; 25static char scan_symlink = 1;
55static char scan_archives = 0; 26static char scan_archives = 0;
56static char dir_recurse = 0; 27static char dir_recurse = 0;
57static char dir_crossmount = 1; 28static char dir_crossmount = 1;
58static char show_pax = 0; 29static char show_pax = 0;
30static char show_perms = 0;
31static char show_size = 0;
59static char show_phdr = 0; 32static char show_phdr = 0;
60static char show_textrel = 0; 33static char show_textrel = 0;
61static char show_rpath = 0; 34static char show_rpath = 0;
62static char show_needed = 0; 35static char show_needed = 0;
63static char show_interp = 0; 36static char show_interp = 0;
64static char show_bind = 0; 37static char show_bind = 0;
65static char show_soname = 0; 38static char show_soname = 0;
66static char show_textrels = 0; 39static char show_textrels = 0;
67static char show_banner = 1; 40static char show_banner = 1;
41static char show_endian = 0;
42static char show_osabi = 0;
43static char show_eabi = 0;
68static char be_quiet = 0; 44static char be_quiet = 0;
69static char be_verbose = 0; 45static char be_verbose = 0;
70static char be_wewy_wewy_quiet = 0; 46static char be_wewy_wewy_quiet = 0;
71static char be_semi_verbose = 0; 47static char be_semi_verbose = 0;
72static char *find_sym = NULL, *versioned_symname = NULL; 48static char *find_sym = NULL;
73static char *find_lib = NULL; 49static char *find_lib = NULL;
50static array_t _find_lib_arr = array_init_decl, *find_lib_arr = &_find_lib_arr;
74static char *find_section = NULL; 51static char *find_section = NULL;
52static array_t _find_section_arr = array_init_decl, *find_section_arr = &_find_section_arr;
75static char *out_format = NULL; 53static char *out_format = NULL;
76static char *search_path = NULL; 54static char *search_path = NULL;
77static char fix_elf = 0; 55static char fix_elf = 0;
78static char gmatch = 0; 56static char g_match = 0;
79static char use_ldcache = 0; 57static char use_ldcache = 0;
80 58
59static char **qa_textrels = NULL;
60static char **qa_execstack = NULL;
61static char **qa_wx_load = NULL;
62static char *root;
63
81int match_bits = 0; 64static int match_bits = 0;
82caddr_t ldcache = 0; 65static unsigned int match_perms = 0;
66static void *ldcache = NULL;
83size_t ldcache_size = 0; 67static size_t ldcache_size = 0;
84unsigned long setpax = 0UL; 68static unsigned long setpax = 0UL;
69
70static int has_objdump = 0;
71
72/* find the path to a file by name */
73static char *which(const char *fname)
74{
75 static char fullpath[__PAX_UTILS_PATH_MAX];
76 char *path, *p;
77
78 path = getenv("PATH");
79 if (!path)
80 return NULL;
81
82 path = xstrdup(path);
83 while ((p = strrchr(path, ':')) != NULL) {
84 snprintf(fullpath, sizeof(fullpath), "%s/%s", p + 1, fname);
85 *p = 0;
86 if (access(fullpath, R_OK) != -1) {
87 free(path);
88 return fullpath;
89 }
90 }
91 free(path);
92 return NULL;
93}
94
95/* 1 on failure. 0 otherwise */
96static int rematch(const char *regex, const char *match, int cflags)
97{
98 regex_t preg;
99 int ret;
100
101 if ((match == NULL) || (regex == NULL))
102 return EXIT_FAILURE;
103
104 if ((ret = regcomp(&preg, regex, cflags))) {
105 char err[256];
106
107 if (regerror(ret, &preg, err, sizeof(err)))
108 fprintf(stderr, "regcomp failed: %s", err);
109 else
110 fprintf(stderr, "regcomp failed");
111
112 return EXIT_FAILURE;
113 }
114 ret = regexec(&preg, match, 0, NULL, 0);
115 regfree(&preg);
116
117 return ret;
118}
85 119
86/* sub-funcs for scanelf_file() */ 120/* sub-funcs for scanelf_file() */
87static void scanelf_file_get_symtabs(elfobj *elf, void **sym, void **tab) 121static void scanelf_file_get_symtabs(elfobj *elf, void **sym, void **tab)
88{ 122{
89 /* find the best SHT_DYNSYM and SHT_STRTAB sections */ 123 /* find the best SHT_DYNSYM and SHT_STRTAB sections */
124
125 /* debug sections */
126 void *symtab = elf_findsecbyname(elf, ".symtab");
127 void *strtab = elf_findsecbyname(elf, ".strtab");
128 /* runtime sections */
129 void *dynsym = elf_findsecbyname(elf, ".dynsym");
130 void *dynstr = elf_findsecbyname(elf, ".dynstr");
131
90#define GET_SYMTABS(B) \ 132#define GET_SYMTABS(B) \
91 if (elf->elf_class == ELFCLASS ## B) { \ 133 if (elf->elf_class == ELFCLASS ## B) { \
92 Elf ## B ## _Shdr *symtab, *strtab, *dynsym, *dynstr; \
93 /* debug sections */ \
94 symtab = SHDR ## B (elf_findsecbyname(elf, ".symtab")); \
95 strtab = SHDR ## B (elf_findsecbyname(elf, ".strtab")); \
96 /* runtime sections */ \
97 dynsym = SHDR ## B (elf_findsecbyname(elf, ".dynsym")); \
98 dynstr = SHDR ## B (elf_findsecbyname(elf, ".dynstr")); \
99 if (symtab && dynsym) { \ 134 if (symtab && dynsym) { \
135 Elf ## B ## _Shdr *esymtab = symtab; \
136 Elf ## B ## _Shdr *edynsym = dynsym; \
100 *sym = (void*)((EGET(symtab->sh_size) > EGET(dynsym->sh_size)) ? symtab : dynsym); \ 137 *sym = (EGET(esymtab->sh_size) > EGET(edynsym->sh_size)) ? symtab : dynsym; \
101 } else { \ 138 } else \
102 *sym = (void*)(symtab ? symtab : dynsym); \ 139 *sym = symtab ? symtab : dynsym; \
103 } \
104 if (strtab && dynstr) { \ 140 if (strtab && dynstr) { \
141 Elf ## B ## _Shdr *estrtab = strtab; \
142 Elf ## B ## _Shdr *edynstr = dynstr; \
105 *tab = (void*)((EGET(strtab->sh_size) > EGET(dynstr->sh_size)) ? strtab : dynstr); \ 143 *tab = (EGET(estrtab->sh_size) > EGET(edynstr->sh_size)) ? strtab : dynstr; \
106 } else { \ 144 } else \
107 *tab = (void*)(strtab ? strtab : dynstr); \ 145 *tab = strtab ? strtab : dynstr; \
108 } \
109 } 146 }
110 GET_SYMTABS(32) 147 GET_SYMTABS(32)
111 GET_SYMTABS(64) 148 GET_SYMTABS(64)
112} 149}
113 150
143 } 180 }
144 SHOW_PAX(32) 181 SHOW_PAX(32)
145 SHOW_PAX(64) 182 SHOW_PAX(64)
146 } 183 }
147 184
148
149 if (fix_elf && setpax) { 185 if (fix_elf && setpax) {
150 /* set the chpax settings */ 186 /* set the chpax settings */
151 if (elf->elf_class == ELFCLASS32) { 187 if (elf->elf_class == ELFCLASS32) {
152 if (EHDR32(elf->ehdr)->e_type == ET_DYN || EHDR32(elf->ehdr)->e_type == ET_EXEC) 188 if (EHDR32(elf->ehdr)->e_type == ET_DYN || EHDR32(elf->ehdr)->e_type == ET_EXEC)
153 ESET(EHDR32(elf->ehdr)->e_ident[EI_PAX], pax_pf2hf_flags(setpax)); 189 ESET(EHDR32(elf->ehdr)->e_ident[EI_PAX], pax_pf2hf_flags(setpax));
197 uint32_t flags, check_flags; \ 233 uint32_t flags, check_flags; \
198 if (elf->phdr != NULL) { \ 234 if (elf->phdr != NULL) { \
199 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \ 235 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
200 for (i = 0; i < EGET(ehdr->e_phnum); ++i) { \ 236 for (i = 0; i < EGET(ehdr->e_phnum); ++i) { \
201 if (EGET(phdr[i].p_type) == PT_GNU_STACK) { \ 237 if (EGET(phdr[i].p_type) == PT_GNU_STACK) { \
238 if (multi_stack++) \
202 if (multi_stack++) warnf("%s: multiple PT_GNU_STACK's !?", elf->filename); \ 239 warnf("%s: multiple PT_GNU_STACK's !?", elf->filename); \
240 if (file_matches_list(elf->filename, qa_execstack)) \
241 continue; \
203 found = found_phdr; \ 242 found = found_phdr; \
204 offset = 0; \ 243 offset = 0; \
205 check_flags = PF_X; \ 244 check_flags = PF_X; \
206 } else if (EGET(phdr[i].p_type) == PT_GNU_RELRO) { \ 245 } else if (EGET(phdr[i].p_type) == PT_GNU_RELRO) { \
246 if (multi_relro++) \
207 if (multi_relro++) warnf("%s: multiple PT_GNU_RELRO's !?", elf->filename); \ 247 warnf("%s: multiple PT_GNU_RELRO's !?", elf->filename); \
208 found = found_relro; \ 248 found = found_relro; \
209 offset = 4; \ 249 offset = 4; \
210 check_flags = PF_X; \ 250 check_flags = PF_X; \
211 } else if (EGET(phdr[i].p_type) == PT_LOAD) { \ 251 } else if (EGET(phdr[i].p_type) == PT_LOAD) { \
212 if (ehdr->e_type == ET_DYN || ehdr->e_type == ET_EXEC) \ 252 if (EGET(ehdr->e_type) == ET_DYN || EGET(ehdr->e_type) == ET_EXEC) \
253 if (multi_load++ > max_pt_load) \
213 if (multi_load++ > max_pt_load) warnf("%s: more than %i PT_LOAD's !?", elf->filename, max_pt_load); \ 254 warnf("%s: more than %i PT_LOAD's !?", elf->filename, max_pt_load); \
255 if (file_matches_list(elf->filename, qa_wx_load)) \
256 continue; \
214 found = found_load; \ 257 found = found_load; \
215 offset = 8; \ 258 offset = 8; \
216 check_flags = PF_W|PF_X; \ 259 check_flags = PF_W|PF_X; \
217 } else \ 260 } else \
218 continue; \ 261 continue; \
231 } else if (elf->shdr != NULL) { \ 274 } else if (elf->shdr != NULL) { \
232 /* no program headers which means this is prob an object file */ \ 275 /* no program headers which means this is prob an object file */ \
233 Elf ## B ## _Shdr *shdr = SHDR ## B (elf->shdr); \ 276 Elf ## B ## _Shdr *shdr = SHDR ## B (elf->shdr); \
234 Elf ## B ## _Shdr *strtbl = shdr + EGET(ehdr->e_shstrndx); \ 277 Elf ## B ## _Shdr *strtbl = shdr + EGET(ehdr->e_shstrndx); \
235 char *str; \ 278 char *str; \
236 if ((void*)strtbl > (void*)elf->data_end) \ 279 if ((void*)strtbl > elf->data_end) \
237 goto skip_this_shdr##B; \ 280 goto skip_this_shdr##B; \
238 check_flags = SHF_WRITE|SHF_EXECINSTR; \ 281 check_flags = SHF_WRITE|SHF_EXECINSTR; \
239 for (i = 0; i < EGET(ehdr->e_shnum); ++i) { \ 282 for (i = 0; i < EGET(ehdr->e_shnum); ++i) { \
240 if (EGET(shdr[i].sh_type) != SHT_PROGBITS) continue; \ 283 if (EGET(shdr[i].sh_type) != SHT_PROGBITS) continue; \
241 offset = EGET(strtbl->sh_offset) + EGET(shdr[i].sh_name); \ 284 offset = EGET(strtbl->sh_offset) + EGET(shdr[i].sh_name); \
255 break; \ 298 break; \
256 } \ 299 } \
257 } \ 300 } \
258 skip_this_shdr##B: \ 301 skip_this_shdr##B: \
259 if (!multi_stack) { \ 302 if (!multi_stack) { \
303 if (file_matches_list(elf->filename, qa_execstack)) \
304 return NULL; \
260 *found_phdr = 1; \ 305 *found_phdr = 1; \
261 shown = 1; \ 306 shown = 1; \
262 memcpy(ret, "!WX", 3); \ 307 memcpy(ret, "!WX", 3); \
263 } \ 308 } \
264 } \ 309 } \
269 if (be_wewy_wewy_quiet || (be_quiet && !shown)) 314 if (be_wewy_wewy_quiet || (be_quiet && !shown))
270 return NULL; 315 return NULL;
271 else 316 else
272 return ret; 317 return ret;
273} 318}
319
320/*
321 * See if this ELF contains a DT_TEXTREL tag in any of its
322 * PT_DYNAMIC sections.
323 */
274static const char *scanelf_file_textrel(elfobj *elf, char *found_textrel) 324static const char *scanelf_file_textrel(elfobj *elf, char *found_textrel)
275{ 325{
276 static const char *ret = "TEXTREL"; 326 static const char *ret = "TEXTREL";
277 unsigned long i; 327 unsigned long i;
278 328
279 if (!show_textrel && !show_textrels) return NULL; 329 if (!show_textrel && !show_textrels) return NULL;
330
331 if (file_matches_list(elf->filename, qa_textrels)) return NULL;
280 332
281 if (elf->phdr) { 333 if (elf->phdr) {
282#define SHOW_TEXTREL(B) \ 334#define SHOW_TEXTREL(B) \
283 if (elf->elf_class == ELFCLASS ## B) { \ 335 if (elf->elf_class == ELFCLASS ## B) { \
284 Elf ## B ## _Dyn *dyn; \ 336 Elf ## B ## _Dyn *dyn; \
285 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \ 337 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
286 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \ 338 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
287 Elf ## B ## _Off offset; \ 339 Elf ## B ## _Off offset; \
288 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 340 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
289 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \ 341 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \
290 offset = EGET(phdr[i].p_offset); \ 342 offset = EGET(phdr[i].p_offset); \
291 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 343 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
292 dyn = DYN ## B (elf->data + offset); \ 344 dyn = DYN ## B (elf->vdata + offset); \
293 while (EGET(dyn->d_tag) != DT_NULL) { \ 345 while (EGET(dyn->d_tag) != DT_NULL) { \
294 if (EGET(dyn->d_tag) == DT_TEXTREL) { /*dyn->d_tag != DT_FLAGS)*/ \ 346 if (EGET(dyn->d_tag) == DT_TEXTREL) { /*dyn->d_tag != DT_FLAGS)*/ \
295 *found_textrel = 1; \ 347 *found_textrel = 1; \
296 /*if (dyn->d_un.d_val & DF_TEXTREL)*/ \ 348 /*if (dyn->d_un.d_val & DF_TEXTREL)*/ \
297 return (be_wewy_wewy_quiet ? NULL : ret); \ 349 return (be_wewy_wewy_quiet ? NULL : ret); \
306 if (be_quiet || be_wewy_wewy_quiet) 358 if (be_quiet || be_wewy_wewy_quiet)
307 return NULL; 359 return NULL;
308 else 360 else
309 return " - "; 361 return " - ";
310} 362}
363
364/*
365 * Scan the .text section to see if there are any relocations in it.
366 * Should rewrite this to check PT_LOAD sections that are marked
367 * Executable rather than the section named '.text'.
368 */
311static char *scanelf_file_textrels(elfobj *elf, char *found_textrels, char *found_textrel) 369static char *scanelf_file_textrels(elfobj *elf, char *found_textrels, char *found_textrel)
312{ 370{
313 unsigned long s, r, rmax; 371 unsigned long s, r, rmax;
314 void *symtab_void, *strtab_void, *text_void; 372 void *symtab_void, *strtab_void, *text_void;
315 373
336 Elf ## B ## _Rela *rela; \ 394 Elf ## B ## _Rela *rela; \
337 /* search the section headers for relocations */ \ 395 /* search the section headers for relocations */ \
338 for (s = 0; s < EGET(ehdr->e_shnum); ++s) { \ 396 for (s = 0; s < EGET(ehdr->e_shnum); ++s) { \
339 uint32_t sh_type = EGET(shdr[s].sh_type); \ 397 uint32_t sh_type = EGET(shdr[s].sh_type); \
340 if (sh_type == SHT_REL) { \ 398 if (sh_type == SHT_REL) { \
341 rel = REL ## B (elf->data + EGET(shdr[s].sh_offset)); \ 399 rel = REL ## B (elf->vdata + EGET(shdr[s].sh_offset)); \
342 rela = NULL; \ 400 rela = NULL; \
343 rmax = EGET(shdr[s].sh_size) / sizeof(*rel); \ 401 rmax = EGET(shdr[s].sh_size) / sizeof(*rel); \
344 } else if (sh_type == SHT_RELA) { \ 402 } else if (sh_type == SHT_RELA) { \
345 rel = NULL; \ 403 rel = NULL; \
346 rela = RELA ## B (elf->data + EGET(shdr[s].sh_offset)); \ 404 rela = RELA ## B (elf->vdata + EGET(shdr[s].sh_offset)); \
347 rmax = EGET(shdr[s].sh_size) / sizeof(*rela); \ 405 rmax = EGET(shdr[s].sh_size) / sizeof(*rela); \
348 } else \ 406 } else \
349 continue; \ 407 continue; \
350 /* now see if any of the relocs are in the .text */ \ 408 /* now see if any of the relocs are in the .text */ \
351 for (r = 0; r < rmax; ++r) { \ 409 for (r = 0; r < rmax; ++r) { \
366 if (r_offset < vaddr || r_offset >= vaddr + memsz) { \ 424 if (r_offset < vaddr || r_offset >= vaddr + memsz) { \
367 if (be_verbose <= 2) continue; \ 425 if (be_verbose <= 2) continue; \
368 } else \ 426 } else \
369 *found_textrels = 1; \ 427 *found_textrels = 1; \
370 /* locate this relocation symbol name */ \ 428 /* locate this relocation symbol name */ \
371 sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \ 429 sym = SYM ## B (elf->vdata + EGET(symtab->sh_offset)); \
372 if ((void*)sym > (void*)elf->data_end) { \ 430 if ((void*)sym > elf->data_end) { \
373 warn("%s: corrupt ELF symbol", elf->filename); \ 431 warn("%s: corrupt ELF symbol", elf->filename); \
374 continue; \ 432 continue; \
375 } \ 433 } \
376 sym_max = ELF ## B ## _R_SYM(r_info); \ 434 sym_max = ELF ## B ## _R_SYM(r_info); \
377 if (sym_max * EGET(symtab->sh_entsize) < symtab->sh_size) \ 435 if (sym_max * EGET(symtab->sh_entsize) < symtab->sh_size) \
380 sym = NULL; \ 438 sym = NULL; \
381 sym_max = EGET(symtab->sh_size) / EGET(symtab->sh_entsize); \ 439 sym_max = EGET(symtab->sh_size) / EGET(symtab->sh_entsize); \
382 /* show the raw details about this reloc */ \ 440 /* show the raw details about this reloc */ \
383 printf(" %s: ", elf->base_filename); \ 441 printf(" %s: ", elf->base_filename); \
384 if (sym && sym->st_name) \ 442 if (sym && sym->st_name) \
385 printf("%s", (char*)(elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name))); \ 443 printf("%s", elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name)); \
386 else \ 444 else \
387 printf("(memory/fake?)"); \ 445 printf("(memory/data?)"); \
388 printf(" [0x%lX]", (unsigned long)r_offset); \ 446 printf(" [0x%lX]", (unsigned long)r_offset); \
389 /* now try to find the closest symbol that this rel is probably in */ \ 447 /* now try to find the closest symbol that this rel is probably in */ \
390 sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \ 448 sym = SYM ## B (elf->vdata + EGET(symtab->sh_offset)); \
391 func = NULL; \ 449 func = NULL; \
392 offset_tmp = 0; \ 450 offset_tmp = 0; \
393 while (sym_max--) { \ 451 while (sym_max--) { \
394 if (EGET(sym->st_value) < r_offset && EGET(sym->st_value) > offset_tmp) { \ 452 if (EGET(sym->st_value) < r_offset && EGET(sym->st_value) > offset_tmp) { \
395 func = sym; \ 453 func = sym; \
396 offset_tmp = EGET(sym->st_value); \ 454 offset_tmp = EGET(sym->st_value); \
397 } \ 455 } \
398 ++sym; \ 456 ++sym; \
399 } \ 457 } \
400 printf(" in "); \ 458 printf(" in "); \
401 if (func && func->st_name) \ 459 if (func && func->st_name) { \
402 printf("%s", (char*)(elf->data + EGET(strtab->sh_offset) + EGET(func->st_name))); \ 460 const char *func_name = elf->data + EGET(strtab->sh_offset) + EGET(func->st_name); \
461 if (r_offset > EGET(func->st_size)) \
462 printf("(optimized out: previous %s)", func_name); \
403 else \ 463 else \
404 printf("(NULL: fake?)"); \ 464 printf("%s", func_name); \
465 } else \
466 printf("(optimized out)"); \
405 printf(" [0x%lX]\n", (unsigned long)offset_tmp); \ 467 printf(" [0x%lX]\n", (unsigned long)offset_tmp); \
468 if (be_verbose && has_objdump) { \
469 Elf ## B ## _Addr end_addr = offset_tmp + EGET(func->st_size); \
470 char *sysbuf; \
471 size_t syslen; \
472 int sysret; \
473 const char sysfmt[] = "objdump -r -R -d -w -l --start-address=0x%lX --stop-address=0x%lX %s | grep --color -i -C 3 '.*[[:space:]]%lX:[[:space:]]*R_.*'\n"; \
474 syslen = sizeof(sysfmt) + strlen(elf->filename) + 3 * sizeof(unsigned long) + 1; \
475 sysbuf = xmalloc(syslen); \
476 if (end_addr < r_offset) \
477 /* not uncommon when things are optimized out */ \
478 end_addr = r_offset + 0x100; \
479 snprintf(sysbuf, syslen, sysfmt, \
480 (unsigned long)offset_tmp, \
481 (unsigned long)end_addr, \
482 elf->filename, \
483 (unsigned long)r_offset); \
484 fflush(stdout); \
485 sysret = system(sysbuf); \
486 fflush(stdout); \
487 free(sysbuf); \
488 } \
406 } \ 489 } \
407 } } 490 } }
408 SHOW_TEXTRELS(32) 491 SHOW_TEXTRELS(32)
409 SHOW_TEXTRELS(64) 492 SHOW_TEXTRELS(64)
410 } 493 }
412 warnf("ELF %s has TEXTREL markings but doesnt appear to have any real TEXTREL's !?", elf->filename); 495 warnf("ELF %s has TEXTREL markings but doesnt appear to have any real TEXTREL's !?", elf->filename);
413 496
414 return NULL; 497 return NULL;
415} 498}
416 499
417static void rpath_security_checks(elfobj *, char *, const char *);
418static void rpath_security_checks(elfobj *elf, char *item, const char *dt_type) 500static void rpath_security_checks(elfobj *elf, char *item, const char *dt_type)
419{ 501{
420 struct stat st; 502 struct stat st;
421 switch (*item) { 503 switch (*item) {
422 case '/': break; 504 case '/': break;
428 warnf("Security problem NULL %s in %s", dt_type, elf->filename); 510 warnf("Security problem NULL %s in %s", dt_type, elf->filename);
429 break; 511 break;
430 case '$': 512 case '$':
431 if (fstat(elf->fd, &st) != -1) 513 if (fstat(elf->fd, &st) != -1)
432 if ((st.st_mode & S_ISUID) || (st.st_mode & S_ISGID)) 514 if ((st.st_mode & S_ISUID) || (st.st_mode & S_ISGID))
433 warnf("Security problem with %s='%s' in %s with mode set of %o", 515 warnf("Security problem with %s='%s' in %s with mode set of %o",
434 dt_type, item, elf->filename, st.st_mode & 07777); 516 dt_type, item, elf->filename, (unsigned int) st.st_mode & 07777);
435 break; 517 break;
436 default: 518 default:
437 warnf("Maybe? sec problem with %s='%s' in %s", dt_type, item, elf->filename); 519 warnf("Maybe? sec problem with %s='%s' in %s", dt_type, item, elf->filename);
438 break; 520 break;
439 } 521 }
440} 522}
441static void scanelf_file_rpath(elfobj *elf, char *found_rpath, char **ret, size_t *ret_len) 523static void scanelf_file_rpath(elfobj *elf, char *found_rpath, char **ret, size_t *ret_len)
442{ 524{
443 unsigned long i, s; 525 unsigned long i;
444 char *rpath, *runpath, **r; 526 char *rpath, *runpath, **r;
445 void *strtbl_void; 527 void *strtbl_void;
446 528
447 if (!show_rpath) return; 529 if (!show_rpath) return;
448 530
459 Elf ## B ## _Off offset; \ 541 Elf ## B ## _Off offset; \
460 Elf ## B ## _Xword word; \ 542 Elf ## B ## _Xword word; \
461 /* Scan all the program headers */ \ 543 /* Scan all the program headers */ \
462 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 544 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
463 /* Just scan dynamic headers */ \ 545 /* Just scan dynamic headers */ \
464 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \ 546 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \
465 offset = EGET(phdr[i].p_offset); \ 547 offset = EGET(phdr[i].p_offset); \
466 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 548 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
467 /* Just scan dynamic RPATH/RUNPATH headers */ \ 549 /* Just scan dynamic RPATH/RUNPATH headers */ \
468 dyn = DYN ## B (elf->data + offset); \ 550 dyn = DYN ## B (elf->vdata + offset); \
469 while ((word=EGET(dyn->d_tag)) != DT_NULL) { \ 551 while ((word=EGET(dyn->d_tag)) != DT_NULL) { \
470 if (word == DT_RPATH) { \ 552 if (word == DT_RPATH) { \
471 r = &rpath; \ 553 r = &rpath; \
472 } else if (word == DT_RUNPATH) { \ 554 } else if (word == DT_RUNPATH) { \
473 r = &runpath; \ 555 r = &runpath; \
477 } \ 559 } \
478 /* Verify the memory is somewhat sane */ \ 560 /* Verify the memory is somewhat sane */ \
479 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \ 561 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \
480 if (offset < (Elf ## B ## _Off)elf->len) { \ 562 if (offset < (Elf ## B ## _Off)elf->len) { \
481 if (*r) warn("ELF has multiple %s's !?", get_elfdtype(word)); \ 563 if (*r) warn("ELF has multiple %s's !?", get_elfdtype(word)); \
482 *r = (char*)(elf->data + offset); \ 564 *r = elf->data + offset; \
483 /* cache the length in case we need to nuke this section later on */ \ 565 /* cache the length in case we need to nuke this section later on */ \
484 if (fix_elf) \ 566 if (fix_elf) \
485 offset = strlen(*r); \ 567 offset = strlen(*r); \
486 /* If quiet, don't output paths in ld.so.conf */ \ 568 /* If quiet, don't output paths in ld.so.conf */ \
487 if (be_quiet) { \ 569 if (be_quiet) { \
493 /* scan each path in : delimited list */ \ 575 /* scan each path in : delimited list */ \
494 while (start) { \ 576 while (start) { \
495 rpath_security_checks(elf, start, get_elfdtype(word)); \ 577 rpath_security_checks(elf, start, get_elfdtype(word)); \
496 end = strchr(start, ':'); \ 578 end = strchr(start, ':'); \
497 len = (end ? abs(end - start) : strlen(start)); \ 579 len = (end ? abs(end - start) : strlen(start)); \
498 if (use_ldcache) \ 580 if (use_ldcache) { \
499 for (s = 0; ldpaths[s]; ++s) \ 581 size_t n; \
582 const char *ldpath; \
583 array_for_each(ldpaths, n, ldpath) \
500 if (!strncmp(ldpaths[s], start, len) && !ldpaths[s][len]) { \ 584 if (!strncmp(ldpath, start, len) && !ldpath[len]) { \
501 *r = end; \ 585 *r = end; \
502 /* corner case ... if RPATH reads "/usr/lib:", we want \ 586 /* corner case ... if RPATH reads "/usr/lib:", we want \
503 * to show ':' rather than '' */ \ 587 * to show ':' rather than '' */ \
504 if (end && end[1] != '\0') \ 588 if (end && end[1] != '\0') \
505 (*r)++; \ 589 (*r)++; \
506 break; \ 590 break; \
507 } \ 591 } \
592 } \
508 if (!*r || !end) \ 593 if (!*r || !end) \
509 break; \ 594 break; \
510 else \ 595 else \
511 start = start + len + 1; \ 596 start = start + len + 1; \
512 } \ 597 } \
597#define FLAG_S390_LIB64 0x0400 682#define FLAG_S390_LIB64 0x0400
598#define FLAG_POWERPC_LIB64 0x0500 683#define FLAG_POWERPC_LIB64 0x0500
599#define FLAG_MIPS64_LIBN32 0x0600 684#define FLAG_MIPS64_LIBN32 0x0600
600#define FLAG_MIPS64_LIBN64 0x0700 685#define FLAG_MIPS64_LIBN64 0x0700
601 686
602static char *lookup_cache_lib(elfobj *, char *);
603#if defined(__GLIBC__) || defined(__UCLIBC__) 687#if defined(__GLIBC__) || defined(__UCLIBC__)
688
604static char *lookup_cache_lib(elfobj *elf, char *fname) 689static char *lookup_cache_lib(elfobj *elf, char *fname)
605{ 690{
606 int fd = 0; 691 int fd;
607 char *strs; 692 char *strs;
608 static char buf[__PAX_UTILS_PATH_MAX] = ""; 693 static char buf[__PAX_UTILS_PATH_MAX] = "";
609 const char *cachefile = "/etc/ld.so.cache"; 694 const char cachefile[] = "/etc/ld.so.cache";
610 struct stat st; 695 struct stat st;
611 696
612 typedef struct { 697 typedef struct {
613 char magic[LDSO_CACHE_MAGIC_LEN]; 698 char magic[LDSO_CACHE_MAGIC_LEN];
614 char version[LDSO_CACHE_VER_LEN]; 699 char version[LDSO_CACHE_VER_LEN];
624 libentry_t *libent; 709 libentry_t *libent;
625 710
626 if (fname == NULL) 711 if (fname == NULL)
627 return NULL; 712 return NULL;
628 713
629 if (ldcache == 0) { 714 if (ldcache == NULL) {
630 if (stat(cachefile, &st) || (fd = open(cachefile, O_RDONLY)) == -1) 715 if (stat(cachefile, &st))
716 return NULL;
717
718 fd = open(cachefile, O_RDONLY);
719 if (fd == -1)
631 return NULL; 720 return NULL;
632 721
633 /* cache these values so we only map/unmap the cache file once */ 722 /* cache these values so we only map/unmap the cache file once */
634 ldcache_size = st.st_size; 723 ldcache_size = st.st_size;
635 ldcache = mmap(0, ldcache_size, PROT_READ, MAP_SHARED, fd, 0); 724 header = ldcache = mmap(0, ldcache_size, PROT_READ, MAP_SHARED, fd, 0);
636
637 close(fd); 725 close(fd);
638 726
639 if (ldcache == (caddr_t)-1) { 727 if (ldcache == MAP_FAILED) {
640 ldcache = 0; 728 ldcache = NULL;
641 return NULL; 729 return NULL;
642 } 730 }
643 731
644 if (memcmp(((header_t *) ldcache)->magic, LDSO_CACHE_MAGIC, LDSO_CACHE_MAGIC_LEN)) 732 if (memcmp(header->magic, LDSO_CACHE_MAGIC, LDSO_CACHE_MAGIC_LEN) ||
733 memcmp(header->version, LDSO_CACHE_VER, LDSO_CACHE_VER_LEN))
734 {
735 munmap(ldcache, ldcache_size);
736 ldcache = NULL;
645 return NULL; 737 return NULL;
646 if (memcmp (((header_t *) ldcache)->version, LDSO_CACHE_VER, LDSO_CACHE_VER_LEN))
647 return NULL;
648 } 738 }
739 } else
740 header = ldcache;
649 741
650 header = (header_t *) ldcache;
651 libent = (libentry_t *) (ldcache + sizeof(header_t)); 742 libent = ldcache + sizeof(header_t);
652 strs = (char *) &libent[header->nlibs]; 743 strs = (char *) &libent[header->nlibs];
653 744
654 for (fd = 0; fd < header->nlibs; fd++) { 745 for (fd = 0; fd < header->nlibs; ++fd) {
655 /* this should be more fine grained, but for now we assume that 746 /* This should be more fine grained, but for now we assume that
656 * diff arches will not be cached together. and we ignore the 747 * diff arches will not be cached together, and we ignore the
657 * the different multilib mips cases. */ 748 * the different multilib mips cases.
749 */
658 if (elf->elf_class == ELFCLASS64 && !(libent[fd].flags & FLAG_REQUIRED_MASK)) 750 if (elf->elf_class == ELFCLASS64 && !(libent[fd].flags & FLAG_REQUIRED_MASK))
659 continue; 751 continue;
660 if (elf->elf_class == ELFCLASS32 && (libent[fd].flags & FLAG_REQUIRED_MASK)) 752 if (elf->elf_class == ELFCLASS32 && (libent[fd].flags & FLAG_REQUIRED_MASK))
661 continue; 753 continue;
662 754
663 if (strcmp(fname, strs + libent[fd].sooffset) != 0) 755 if (strcmp(fname, strs + libent[fd].sooffset) != 0)
664 continue; 756 continue;
757
758 /* Return first hit because that is how the ldso rolls */
665 strncpy(buf, strs + libent[fd].liboffset, sizeof(buf)); 759 strncpy(buf, strs + libent[fd].liboffset, sizeof(buf));
760 break;
666 } 761 }
762
667 return buf; 763 return buf;
668} 764}
765
766#elif defined(__NetBSD__)
767static char *lookup_cache_lib(elfobj *elf, char *fname)
768{
769 static char buf[__PAX_UTILS_PATH_MAX] = "";
770 static struct stat st;
771 size_t n;
772 char *ldpath;
773
774 array_for_each(ldpath, n, ldpath) {
775 if ((unsigned) snprintf(buf, sizeof(buf), "%s/%s", ldpath, fname) >= sizeof(buf))
776 continue; /* if the pathname is too long, or something went wrong, ignore */
777
778 if (stat(buf, &st) != 0)
779 continue; /* if the lib doesn't exist in *ldpath, look further */
780
781 /* NetBSD doesn't actually do sanity checks, it just loads the file
782 * and if that doesn't work, continues looking in other directories.
783 * This cannot easily be safely emulated, unfortunately. For now,
784 * just assume that if it exists, it's a valid library. */
785
786 return buf;
787 }
788
789 /* not found in any path */
790 return NULL;
791}
669#else 792#else
793#ifdef __ELF__
670#warning Cache support not implemented for your current target. 794#warning Cache support not implemented for your target
795#endif
671static char *lookup_cache_lib(elfobj *elf, char *fname) 796static char *lookup_cache_lib(elfobj *elf, char *fname)
672{ 797{
673 return NULL; 798 return NULL;
674} 799}
675#endif 800#endif
679 unsigned long i; 804 unsigned long i;
680 char *needed; 805 char *needed;
681 void *strtbl_void; 806 void *strtbl_void;
682 char *p; 807 char *p;
683 808
809 /*
810 * -n -> op==0 -> print all
811 * -N -> op==1 -> print requested
812 */
684 if ((op==0 && !show_needed) || (op==1 && !find_lib)) return NULL; 813 if ((op == 0 && !show_needed) || (op == 1 && !find_lib))
814 return NULL;
685 815
686 strtbl_void = elf_findsecbyname(elf, ".dynstr"); 816 strtbl_void = elf_findsecbyname(elf, ".dynstr");
687 817
688 if (elf->phdr && strtbl_void) { 818 if (elf->phdr && strtbl_void) {
689#define SHOW_NEEDED(B) \ 819#define SHOW_NEEDED(B) \
691 Elf ## B ## _Dyn *dyn; \ 821 Elf ## B ## _Dyn *dyn; \
692 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \ 822 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
693 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \ 823 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
694 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \ 824 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \
695 Elf ## B ## _Off offset; \ 825 Elf ## B ## _Off offset; \
826 size_t matched = 0; \
827 /* Walk all the program headers to find the PT_DYNAMIC */ \
696 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 828 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
697 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \ 829 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) \
830 continue; \
698 offset = EGET(phdr[i].p_offset); \ 831 offset = EGET(phdr[i].p_offset); \
699 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 832 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) \
833 continue; \
834 /* Walk all the dynamic tags to find NEEDED entries */ \
700 dyn = DYN ## B (elf->data + offset); \ 835 dyn = DYN ## B (elf->vdata + offset); \
701 while (EGET(dyn->d_tag) != DT_NULL) { \ 836 while (EGET(dyn->d_tag) != DT_NULL) { \
702 if (EGET(dyn->d_tag) == DT_NEEDED) { \ 837 if (EGET(dyn->d_tag) == DT_NEEDED) { \
703 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \ 838 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \
704 if (offset >= (Elf ## B ## _Off)elf->len) { \ 839 if (offset >= (Elf ## B ## _Off)elf->len) { \
705 ++dyn; \ 840 ++dyn; \
706 continue; \ 841 continue; \
707 } \ 842 } \
708 needed = (char*)(elf->data + offset); \ 843 needed = elf->data + offset; \
709 if (op == 0) { \ 844 if (op == 0) { \
845 /* -n -> print all entries */ \
710 if (!be_wewy_wewy_quiet) { \ 846 if (!be_wewy_wewy_quiet) { \
711 if (*found_needed) xchrcat(ret, ',', ret_len); \ 847 if (*found_needed) xchrcat(ret, ',', ret_len); \
712 if (use_ldcache) \ 848 if (use_ldcache) \
713 if ((p = lookup_cache_lib(elf, needed)) != NULL) \ 849 if ((p = lookup_cache_lib(elf, needed)) != NULL) \
714 needed = p; \ 850 needed = p; \
715 xstrcat(ret, needed, ret_len); \ 851 xstrcat(ret, needed, ret_len); \
716 } \ 852 } \
717 *found_needed = 1; \ 853 *found_needed = 1; \
718 } else { \ 854 } else { \
719 if (!strncmp(find_lib, needed, strlen( !gmatch ? needed : find_lib))) { \ 855 /* -N -> print matching entries */ \
856 size_t n; \
857 const char *find_lib_name; \
858 \
859 array_for_each(find_lib_arr, n, find_lib_name) \
860 if (!strcmp(find_lib_name, needed)) \
861 ++matched; \
862 \
863 if (matched == array_cnt(find_lib_arr)) { \
720 *found_lib = 1; \ 864 *found_lib = 1; \
721 return (be_wewy_wewy_quiet ? NULL : needed); \ 865 return (be_wewy_wewy_quiet ? NULL : find_lib); \
722 } \ 866 } \
723 } \ 867 } \
724 } \ 868 } \
725 ++dyn; \ 869 ++dyn; \
726 } \ 870 } \
767 Elf ## B ## _Dyn *dyn; \ 911 Elf ## B ## _Dyn *dyn; \
768 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \ 912 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
769 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \ 913 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
770 Elf ## B ## _Off offset; \ 914 Elf ## B ## _Off offset; \
771 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 915 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
772 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \ 916 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \
773 dynamic = 1; \ 917 dynamic = 1; \
774 offset = EGET(phdr[i].p_offset); \ 918 offset = EGET(phdr[i].p_offset); \
775 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 919 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
776 dyn = DYN ## B (elf->data + offset); \ 920 dyn = DYN ## B (elf->vdata + offset); \
777 while (EGET(dyn->d_tag) != DT_NULL) { \ 921 while (EGET(dyn->d_tag) != DT_NULL) { \
778 if (EGET(dyn->d_tag) == DT_BIND_NOW || \ 922 if (EGET(dyn->d_tag) == DT_BIND_NOW || \
779 (EGET(dyn->d_tag) == DT_FLAGS && EGET(dyn->d_un.d_val) & DF_BIND_NOW)) \ 923 (EGET(dyn->d_tag) == DT_FLAGS && EGET(dyn->d_un.d_val) & DF_BIND_NOW)) \
780 { \ 924 { \
781 if (be_quiet) return NULL; \ 925 if (be_quiet) return NULL; \
789 SHOW_BIND(32) 933 SHOW_BIND(32)
790 SHOW_BIND(64) 934 SHOW_BIND(64)
791 935
792 if (be_wewy_wewy_quiet) return NULL; 936 if (be_wewy_wewy_quiet) return NULL;
793 937
938 /* don't output anything if quiet mode and the ELF is static or not setuid */
794 if (be_quiet && !fstat(elf->fd, &s) && !(s.st_mode & S_ISUID || s.st_mode & S_ISGID)) { 939 if (be_quiet && (!dynamic || (!fstat(elf->fd, &s) && !(s.st_mode & (S_ISUID|S_ISGID))))) {
795 return NULL; 940 return NULL;
796 } else { 941 } else {
797 *found_bind = 1; 942 *found_bind = 1;
798 return (char *) (dynamic ? "LAZY" : "STATIC"); 943 return (char *)(dynamic ? "LAZY" : "STATIC");
799 } 944 }
800} 945}
801static char *scanelf_file_soname(elfobj *elf, char *found_soname) 946static char *scanelf_file_soname(elfobj *elf, char *found_soname)
802{ 947{
803 unsigned long i; 948 unsigned long i;
815 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \ 960 Elf ## B ## _Ehdr *ehdr = EHDR ## B (elf->ehdr); \
816 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \ 961 Elf ## B ## _Phdr *phdr = PHDR ## B (elf->phdr); \
817 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \ 962 Elf ## B ## _Shdr *strtbl = SHDR ## B (strtbl_void); \
818 Elf ## B ## _Off offset; \ 963 Elf ## B ## _Off offset; \
819 /* only look for soname in shared objects */ \ 964 /* only look for soname in shared objects */ \
820 if (ehdr->e_type != ET_DYN) \ 965 if (EGET(ehdr->e_type) != ET_DYN) \
821 return NULL; \ 966 return NULL; \
822 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \ 967 for (i = 0; i < EGET(ehdr->e_phnum); i++) { \
823 if (EGET(phdr[i].p_type) != PT_DYNAMIC) continue; \ 968 if (EGET(phdr[i].p_type) != PT_DYNAMIC || EGET(phdr[i].p_filesz) == 0) continue; \
824 offset = EGET(phdr[i].p_offset); \ 969 offset = EGET(phdr[i].p_offset); \
825 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \ 970 if (offset >= elf->len - sizeof(Elf ## B ## _Dyn)) continue; \
826 dyn = DYN ## B (elf->data + offset); \ 971 dyn = DYN ## B (elf->vdata + offset); \
827 while (EGET(dyn->d_tag) != DT_NULL) { \ 972 while (EGET(dyn->d_tag) != DT_NULL) { \
828 if (EGET(dyn->d_tag) == DT_SONAME) { \ 973 if (EGET(dyn->d_tag) == DT_SONAME) { \
829 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \ 974 offset = EGET(strtbl->sh_offset) + EGET(dyn->d_un.d_ptr); \
830 if (offset >= (Elf ## B ## _Off)elf->len) { \ 975 if (offset >= (Elf ## B ## _Off)elf->len) { \
831 ++dyn; \ 976 ++dyn; \
832 continue; \ 977 continue; \
833 } \ 978 } \
834 soname = (char*)(elf->data + offset); \ 979 soname = elf->data + offset; \
835 *found_soname = 1; \ 980 *found_soname = 1; \
836 return (be_wewy_wewy_quiet ? NULL : soname); \ 981 return (be_wewy_wewy_quiet ? NULL : soname); \
837 } \ 982 } \
838 ++dyn; \ 983 ++dyn; \
839 } \ 984 } \
842 SHOW_SONAME(64) 987 SHOW_SONAME(64)
843 } 988 }
844 989
845 return NULL; 990 return NULL;
846} 991}
992
993/*
994 * We support the symbol form:
995 * [%[modifiers]%][[+-]<symbol name>][,[.....]]
996 * If the symbol name is empty, then all symbols are matched.
997 * If the symbol name is a glob ("*"), then all symbols are dumped (debug).
998 * Do not rely on this output format at all.
999 * Otherwise the symbol name is used to search (either regex or string compare).
1000 * If the first char of the symbol name is a plus ("+"), then only match
1001 * defined symbols. If it's a minus ("-"), only match undefined symbols.
1002 * Putting modifiers in between the percent signs allows for more in depth
1003 * filters. There are groups of modifiers. If you don't specify a member
1004 * of a group, then all types in that group are matched. The current
1005 * groups and their types are:
1006 * STT group: STT_NOTYPE:n STT_OBJECT:o STT_FUNC:f SST_FILE:F
1007 * STB group: STB_LOCAL:l STB_GLOBAL:g STB_WEAK:w
1008 * SHN group: SHN_UNDEF:u SHN_ABS:a SHN_COMMON:c {defined}:d
1009 * The "defined" value in the SHN group does not correspond to a SHN_xxx define.
1010 * You can search for multiple symbols at once by seperating with a comma (",").
1011 *
1012 * Some examples:
1013 * ELFs with a weak function "foo":
1014 * scanelf -s %wf%foo <ELFs>
1015 * ELFs that define the symbol "main":
1016 * scanelf -s +main <ELFs>
1017 * scanelf -s %d%main <ELFs>
1018 * ELFs that refer to the undefined symbol "brk":
1019 * scanelf -s -brk <ELFs>
1020 * scanelf -s %u%brk <ELFs>
1021 * All global defined objects in an ELF:
1022 * scanelf -s %ogd% <ELF>
1023 */
1024static void
1025scanelf_match_symname(elfobj *elf, char *found_sym, char **ret, size_t *ret_len, const char *symname,
1026 unsigned int stt, unsigned int stb, unsigned int shn, unsigned long size)
1027{
1028 char *this_sym, *next_sym, saved = saved;
1029
1030 /* allow the user to specify a comma delimited list of symbols to search for */
1031 next_sym = NULL;
1032 do {
1033 bool inc_notype, inc_object, inc_func, inc_file,
1034 inc_local, inc_global, inc_weak,
1035 inc_def, inc_undef, inc_abs, inc_common;
1036
1037 if (next_sym) {
1038 next_sym[-1] = saved;
1039 this_sym = next_sym;
1040 } else
1041 this_sym = find_sym;
1042 if ((next_sym = strchr(this_sym, ','))) {
1043 /* make parsing easier by killing the comma temporarily */
1044 saved = *next_sym;
1045 *next_sym = '\0';
1046 next_sym += 1;
1047 }
1048
1049 /* symbol selection! */
1050 inc_notype = inc_object = inc_func = inc_file = \
1051 inc_local = inc_global = inc_weak = \
1052 inc_def = inc_undef = inc_abs = inc_common = \
1053 (*this_sym != '%');
1054
1055 /* parse the contents of %...% */
1056 if (!inc_notype) {
1057 while (*(this_sym++)) {
1058 if (*this_sym == '%') {
1059 ++this_sym;
1060 break;
1061 }
1062 switch (*this_sym) {
1063 case 'n': inc_notype = true; break;
1064 case 'o': inc_object = true; break;
1065 case 'f': inc_func = true; break;
1066 case 'F': inc_file = true; break;
1067 case 'l': inc_local = true; break;
1068 case 'g': inc_global = true; break;
1069 case 'w': inc_weak = true; break;
1070 case 'd': inc_def = true; break;
1071 case 'u': inc_undef = true; break;
1072 case 'a': inc_abs = true; break;
1073 case 'c': inc_common = true; break;
1074 default: err("invalid symbol selector '%c'", *this_sym);
1075 }
1076 }
1077
1078 /* If no types are matched, not match all */
1079 if (!inc_notype && !inc_object && !inc_func && !inc_file)
1080 inc_notype = inc_object = inc_func = inc_file = true;
1081 if (!inc_local && !inc_global && !inc_weak)
1082 inc_local = inc_global = inc_weak = true;
1083 if (!inc_def && !inc_undef && !inc_abs && !inc_common)
1084 inc_def = inc_undef = inc_abs = inc_common = true;
1085
1086 /* backwards compat for defined/undefined short hand */
1087 } else if (*this_sym == '+') {
1088 inc_undef = false;
1089 ++this_sym;
1090 } else if (*this_sym == '-') {
1091 inc_def = inc_abs = inc_common = false;
1092 ++this_sym;
1093 }
1094
1095 /* filter symbols */
1096 if ((!inc_notype && stt == STT_NOTYPE) || \
1097 (!inc_object && stt == STT_OBJECT) || \
1098 (!inc_func && stt == STT_FUNC ) || \
1099 (!inc_file && stt == STT_FILE ) || \
1100 (!inc_local && stb == STB_LOCAL ) || \
1101 (!inc_global && stb == STB_GLOBAL) || \
1102 (!inc_weak && stb == STB_WEAK ) || \
1103 (!inc_def && shn && shn < SHN_LORESERVE) || \
1104 (!inc_undef && shn == SHN_UNDEF ) || \
1105 (!inc_abs && shn == SHN_ABS ) || \
1106 (!inc_common && shn == SHN_COMMON))
1107 continue;
1108
1109 if (*this_sym == '*') {
1110 /* a "*" symbol gets you debug output */
1111 printf("%s(%s) %5lX %15s %15s %15s %s\n",
1112 ((*found_sym == 0) ? "\n\t" : "\t"),
1113 elf->base_filename,
1114 size,
1115 get_elfstttype(stt),
1116 get_elfstbtype(stb),
1117 get_elfshntype(shn),
1118 symname);
1119 goto matched;
1120
1121 } else {
1122 if (g_match) {
1123 /* regex match the symbol */
1124 if (rematch(this_sym, symname, REG_EXTENDED) != 0)
1125 continue;
1126
1127 } else if (*this_sym) {
1128 /* give empty symbols a "pass", else do a normal compare */
1129 const size_t len = strlen(this_sym);
1130 if (!(strncmp(this_sym, symname, len) == 0 &&
1131 /* Accept unversioned symbol names */
1132 (symname[len] == '\0' || symname[len] == '@')))
1133 continue;
1134 }
1135
1136 if (be_semi_verbose) {
1137 char buf[1024];
1138 snprintf(buf, sizeof(buf), "%lX %s %s",
1139 size,
1140 get_elfstttype(stt),
1141 this_sym);
1142 *ret = xstrdup(buf);
1143 } else {
1144 if (*ret) xchrcat(ret, ',', ret_len);
1145 xstrcat(ret, symname, ret_len);
1146 }
1147
1148 goto matched;
1149 }
1150 } while (next_sym);
1151
1152 return;
1153
1154 matched:
1155 *found_sym = 1;
1156 if (next_sym)
1157 next_sym[-1] = saved;
1158}
1159
847static char *scanelf_file_sym(elfobj *elf, char *found_sym) 1160static const char *scanelf_file_sym(elfobj *elf, char *found_sym)
848{ 1161{
849 unsigned long i; 1162 unsigned long i;
850 char *ret; 1163 char *ret;
851 void *symtab_void, *strtab_void; 1164 void *symtab_void, *strtab_void;
852 1165
853 if (!find_sym) return NULL; 1166 if (!find_sym) return NULL;
854 ret = find_sym; 1167 ret = NULL;
855 1168
856 scanelf_file_get_symtabs(elf, &symtab_void, &strtab_void); 1169 scanelf_file_get_symtabs(elf, &symtab_void, &strtab_void);
857 1170
858 if (symtab_void && strtab_void) { 1171 if (symtab_void && strtab_void) {
859#define FIND_SYM(B) \ 1172#define FIND_SYM(B) \
860 if (elf->elf_class == ELFCLASS ## B) { \ 1173 if (elf->elf_class == ELFCLASS ## B) { \
861 Elf ## B ## _Shdr *symtab = SHDR ## B (symtab_void); \ 1174 Elf ## B ## _Shdr *symtab = SHDR ## B (symtab_void); \
862 Elf ## B ## _Shdr *strtab = SHDR ## B (strtab_void); \ 1175 Elf ## B ## _Shdr *strtab = SHDR ## B (strtab_void); \
863 Elf ## B ## _Sym *sym = SYM ## B (elf->data + EGET(symtab->sh_offset)); \ 1176 Elf ## B ## _Sym *sym = SYM ## B (elf->vdata + EGET(symtab->sh_offset)); \
864 unsigned long cnt = EGET(symtab->sh_entsize); \ 1177 unsigned long cnt = EGET(symtab->sh_entsize); \
865 char *symname; \ 1178 char *symname; \
1179 size_t ret_len = 0; \
866 if (cnt) \ 1180 if (cnt) \
867 cnt = EGET(symtab->sh_size) / cnt; \ 1181 cnt = EGET(symtab->sh_size) / cnt; \
868 for (i = 0; i < cnt; ++i) { \ 1182 for (i = 0; i < cnt; ++i) { \
1183 if ((void*)sym > elf->data_end) { \
1184 warnf("%s: corrupt ELF symbols - aborting", elf->filename); \
1185 goto break_out; \
1186 } \
869 if (sym->st_name) { \ 1187 if (sym->st_name) { \
870 /* make sure the symbol name is in acceptable memory range */ \ 1188 /* make sure the symbol name is in acceptable memory range */ \
871 symname = (char *)(elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name)); \ 1189 symname = elf->data + EGET(strtab->sh_offset) + EGET(sym->st_name); \
872 if ((void*)symname > (void*)elf->data_end) { \ 1190 if ((void*)symname > elf->data_end) { \
873 warnf("%s: corrupt ELF symbols", elf->filename); \ 1191 warnf("%s: corrupt ELF symbols", elf->filename); \
874 ++sym; \ 1192 ++sym; \
875 continue; \ 1193 continue; \
876 } \ 1194 } \
877 /* debug display ... show all symbols and some extra info */ \ 1195 scanelf_match_symname(elf, found_sym, \
878 if (*ret == '*') { \ 1196 &ret, &ret_len, symname, \
879 printf("%s(%s) %5lX %15s %s\n", \ 1197 ELF##B##_ST_TYPE(EGET(sym->st_info)), \
880 ((*found_sym == 0) ? "\n\t" : "\t"), \ 1198 ELF##B##_ST_BIND(EGET(sym->st_info)), \
881 elf->base_filename, \ 1199 EGET(sym->st_shndx), \
882 (unsigned long)sym->st_size, \ 1200 /* st_size can be 64bit, but no one is really that big, so screw em */ \
883 get_elfstttype(sym->st_info), \ 1201 EGET(sym->st_size)); \
884 symname); \
885 *found_sym = 1; \
886 } else { \
887 /* allow the user to specify a comma delimited list of symbols to search for */ \
888 char *this_sym, *next_sym; \
889 this_sym = ret; \
890 do { \
891 next_sym = strchr(this_sym, ','); \
892 if (next_sym == NULL) \
893 next_sym = this_sym + strlen(this_sym); \
894 /* do we want a defined symbol ? */ \
895 if (*this_sym == '+') { \
896 if (sym->st_shndx == SHN_UNDEF) \
897 goto skip_this_sym##B; \
898 ++this_sym; \
899 /* do we want an undefined symbol ? */ \
900 } else if (*this_sym == '-') { \
901 if (sym->st_shndx != SHN_UNDEF) \
902 goto skip_this_sym##B; \
903 ++this_sym; \
904 } \
905 /* ok, lets compare the name now */ \
906 if ((strncmp(this_sym, symname, (next_sym-this_sym)) == 0 && symname[next_sym-this_sym] == '\0') || \
907 (strcmp(symname, versioned_symname) == 0)) { \
908 if (be_semi_verbose) { \
909 char buf[126]; \
910 snprintf(buf, sizeof(buf), "%lX %s %s", \
911 (unsigned long)sym->st_size, get_elfstttype(sym->st_info), this_sym); \
912 ret = buf; \
913 } else \
914 ret = this_sym; \
915 (*found_sym)++; \
916 goto break_out; \
917 } \
918 skip_this_sym##B: this_sym = next_sym + 1; \
919 } while (*next_sym != '\0'); \
920 } \
921 } \ 1202 } \
922 ++sym; \ 1203 ++sym; \
923 } } 1204 } }
924 FIND_SYM(32) 1205 FIND_SYM(32)
925 FIND_SYM(64) 1206 FIND_SYM(64)
931 if (*find_sym != '*' && *found_sym) 1212 if (*find_sym != '*' && *found_sym)
932 return ret; 1213 return ret;
933 if (be_quiet) 1214 if (be_quiet)
934 return NULL; 1215 return NULL;
935 else 1216 else
936 return (char *)" - "; 1217 return " - ";
937} 1218}
938 1219
939
940static char *scanelf_file_sections(elfobj *elf, char *found_section) 1220static const char *scanelf_file_sections(elfobj *elf, char *found_section)
941{ 1221{
942 if (!find_section) 1222 if (!find_section)
943 return NULL; 1223 return NULL;
944 1224
945#define FIND_SECTION(B) \ 1225#define FIND_SECTION(B) \
946 if (elf->elf_class == ELFCLASS ## B) { \ 1226 if (elf->elf_class == ELFCLASS ## B) { \
1227 size_t matched, n; \
947 int invert; \ 1228 int invert; \
1229 const char *section_name; \
948 Elf ## B ## _Shdr *section; \ 1230 Elf ## B ## _Shdr *section; \
1231 \
1232 matched = 0; \
1233 array_for_each(find_section_arr, n, section_name) { \
949 invert = (*find_section == '!' ? 1 : 0); \ 1234 invert = (*section_name == '!' ? 1 : 0); \
950 section = SHDR ## B (elf_findsecbyname(elf, find_section+invert)); \ 1235 section = SHDR ## B (elf_findsecbyname(elf, section_name + invert)); \
951 if ((section == NULL && invert) || (section != NULL && !invert)) \ 1236 if ((section == NULL && invert) || (section != NULL && !invert)) \
1237 ++matched; \
1238 } \
1239 \
1240 if (matched == array_cnt(find_section_arr)) \
952 *found_section = 1; \ 1241 *found_section = 1; \
953 } 1242 }
954 FIND_SECTION(32) 1243 FIND_SECTION(32)
955 FIND_SECTION(64) 1244 FIND_SECTION(64)
956 1245
961 return find_section; 1250 return find_section;
962 1251
963 if (be_quiet) 1252 if (be_quiet)
964 return NULL; 1253 return NULL;
965 else 1254 else
966 return (char *)" - "; 1255 return " - ";
967} 1256}
968 1257
969/* scan an elf file and show all the fun stuff */ 1258/* scan an elf file and show all the fun stuff */
970#define prints(str) write(fileno(stdout), str, strlen(str)) 1259#define prints(str) ({ ssize_t ret = write(fileno(stdout), str, strlen(str)); ret; })
971static int scanelf_elfobj(elfobj *elf) 1260static int scanelf_elfobj(elfobj *elf)
972{ 1261{
973 unsigned long i; 1262 unsigned long i;
974 char found_pax, found_phdr, found_relro, found_load, found_textrel, 1263 char found_pax, found_phdr, found_relro, found_load, found_textrel,
975 found_rpath, found_needed, found_interp, found_bind, found_soname, 1264 found_rpath, found_needed, found_interp, found_bind, found_soname,
976 found_sym, found_lib, found_file, found_textrels, found_section; 1265 found_sym, found_lib, found_file, found_textrels, found_section;
977 static char *out_buffer = NULL; 1266 static char *out_buffer = NULL;
978 static size_t out_len; 1267 static size_t out_len;
979 1268
980 found_pax = found_phdr = found_relro = found_load = found_textrel = \ 1269 found_pax = found_phdr = found_relro = found_load = found_textrel = \
989 printf("%s: scanning file\n", elf->filename); 1278 printf("%s: scanning file\n", elf->filename);
990 1279
991 /* init output buffer */ 1280 /* init output buffer */
992 if (!out_buffer) { 1281 if (!out_buffer) {
993 out_len = sizeof(char) * 80; 1282 out_len = sizeof(char) * 80;
994 out_buffer = (char*)xmalloc(out_len); 1283 out_buffer = xmalloc(out_len);
995 } 1284 }
996 *out_buffer = '\0'; 1285 *out_buffer = '\0';
997 1286
998 /* show the header */ 1287 /* show the header */
999 if (!be_quiet && show_banner) { 1288 if (!be_quiet && show_banner) {
1010 case 'o': prints(" TYPE "); break; 1299 case 'o': prints(" TYPE "); break;
1011 case 'x': prints(" PAX "); break; 1300 case 'x': prints(" PAX "); break;
1012 case 'e': prints("STK/REL/PTL "); break; 1301 case 'e': prints("STK/REL/PTL "); break;
1013 case 't': prints("TEXTREL "); break; 1302 case 't': prints("TEXTREL "); break;
1014 case 'r': prints("RPATH "); break; 1303 case 'r': prints("RPATH "); break;
1304 case 'M': prints("CLASS "); break;
1015 case 'n': prints("NEEDED "); break; 1305 case 'n': prints("NEEDED "); break;
1016 case 'i': prints("INTERP "); break; 1306 case 'i': prints("INTERP "); break;
1017 case 'b': prints("BIND "); break; 1307 case 'b': prints("BIND "); break;
1308 case 'Z': prints("SIZE "); break;
1018 case 'S': prints("SONAME "); break; 1309 case 'S': prints("SONAME "); break;
1019 case 's': prints("SYM "); break; 1310 case 's': prints("SYM "); break;
1020 case 'N': prints("LIB "); break; 1311 case 'N': prints("LIB "); break;
1021 case 'T': prints("TEXTRELS "); break; 1312 case 'T': prints("TEXTRELS "); break;
1022 case 'k': prints("SECTION "); break; 1313 case 'k': prints("SECTION "); break;
1314 case 'a': prints("ARCH "); break;
1315 case 'I': prints("OSABI "); break;
1316 case 'Y': prints("EABI "); break;
1317 case 'O': prints("PERM "); break;
1318 case 'D': prints("ENDIAN "); break;
1023 default: warnf("'%c' has no title ?", out_format[i]); 1319 default: warnf("'%c' has no title ?", out_format[i]);
1024 } 1320 }
1025 } 1321 }
1026 if (!found_file) prints("FILE "); 1322 if (!found_file) prints("FILE ");
1027 prints("\n"); 1323 prints("\n");
1031 1327
1032 /* dump all the good stuff */ 1328 /* dump all the good stuff */
1033 for (i = 0; out_format[i]; ++i) { 1329 for (i = 0; out_format[i]; ++i) {
1034 const char *out; 1330 const char *out;
1035 const char *tmp; 1331 const char *tmp;
1036 1332 static char ubuf[sizeof(unsigned long)*2];
1037 if (!IS_MODIFIER(out_format[i])) { 1333 if (!IS_MODIFIER(out_format[i])) {
1038 xchrcat(&out_buffer, out_format[i], &out_len); 1334 xchrcat(&out_buffer, out_format[i], &out_len);
1039 continue; 1335 continue;
1040 } 1336 }
1041 1337
1077 case 'x': out = scanelf_file_pax(elf, &found_pax); break; 1373 case 'x': out = scanelf_file_pax(elf, &found_pax); break;
1078 case 'e': out = scanelf_file_phdr(elf, &found_phdr, &found_relro, &found_load); break; 1374 case 'e': out = scanelf_file_phdr(elf, &found_phdr, &found_relro, &found_load); break;
1079 case 't': out = scanelf_file_textrel(elf, &found_textrel); break; 1375 case 't': out = scanelf_file_textrel(elf, &found_textrel); break;
1080 case 'T': out = scanelf_file_textrels(elf, &found_textrels, &found_textrel); break; 1376 case 'T': out = scanelf_file_textrels(elf, &found_textrels, &found_textrel); break;
1081 case 'r': scanelf_file_rpath(elf, &found_rpath, &out_buffer, &out_len); break; 1377 case 'r': scanelf_file_rpath(elf, &found_rpath, &out_buffer, &out_len); break;
1378 case 'M': out = get_elfeitype(EI_CLASS, elf->data[EI_CLASS]); break;
1379 case 'D': out = get_endian(elf); break;
1380 case 'O': out = strfileperms(elf->filename); break;
1082 case 'n': 1381 case 'n':
1083 case 'N': out = scanelf_file_needed_lib(elf, &found_needed, &found_lib, (out_format[i]=='N'), &out_buffer, &out_len); break; 1382 case 'N': out = scanelf_file_needed_lib(elf, &found_needed, &found_lib, (out_format[i]=='N'), &out_buffer, &out_len); break;
1084 case 'i': out = scanelf_file_interp(elf, &found_interp); break; 1383 case 'i': out = scanelf_file_interp(elf, &found_interp); break;
1085 case 'b': out = scanelf_file_bind(elf, &found_bind); break; 1384 case 'b': out = scanelf_file_bind(elf, &found_bind); break;
1086 case 'S': out = scanelf_file_soname(elf, &found_soname); break; 1385 case 'S': out = scanelf_file_soname(elf, &found_soname); break;
1087 case 's': out = scanelf_file_sym(elf, &found_sym); break; 1386 case 's': out = scanelf_file_sym(elf, &found_sym); break;
1088 case 'k': out = scanelf_file_sections(elf, &found_section); break; 1387 case 'k': out = scanelf_file_sections(elf, &found_section); break;
1388 case 'a': out = get_elfemtype(elf); break;
1389 case 'I': out = get_elfosabi(elf); break;
1390 case 'Y': out = get_elf_eabi(elf); break;
1391 case 'Z': snprintf(ubuf, sizeof(ubuf), "%lu", (unsigned long)elf->len); out = ubuf; break;;
1089 default: warnf("'%c' has no scan code?", out_format[i]); 1392 default: warnf("'%c' has no scan code?", out_format[i]);
1090 } 1393 }
1091 if (out) { 1394 if (out)
1092 /* hack for comma delimited output like `scanelf -s sym1,sym2,sym3` */
1093 if (out_format[i] == 's' && (tmp=strchr(out,',')) != NULL)
1094 xstrncat(&out_buffer, out, &out_len, (tmp-out));
1095 else
1096 xstrcat(&out_buffer, out, &out_len); 1395 xstrcat(&out_buffer, out, &out_len);
1097 }
1098 } 1396 }
1099 1397
1100#define FOUND_SOMETHING() \ 1398#define FOUND_SOMETHING() \
1101 (found_pax || found_phdr || found_relro || found_load || found_textrel || \ 1399 (found_pax || found_phdr || found_relro || found_load || found_textrel || \
1102 found_rpath || found_needed || found_interp || found_bind || \ 1400 found_rpath || found_needed || found_interp || found_bind || \
1134 if (elf->elf_class != ELFCLASS64) 1432 if (elf->elf_class != ELFCLASS64)
1135 goto label_done; 1433 goto label_done;
1136 break; 1434 break;
1137 default: break; 1435 default: break;
1138 } 1436 }
1139 if (strlen(match_etypes)) { 1437 if (match_etypes) {
1140 char sbuf[126]; 1438 char sbuf[126];
1141 strncpy(sbuf, match_etypes, sizeof(sbuf)); 1439 strncpy(sbuf, match_etypes, sizeof(sbuf));
1142 if (strchr(match_etypes, ',') != NULL) { 1440 if (strchr(match_etypes, ',') != NULL) {
1143 char *p; 1441 char *p;
1144 while((p = strrchr(sbuf, ',')) != NULL) { 1442 while ((p = strrchr(sbuf, ',')) != NULL) {
1145 *p = 0; 1443 *p = 0;
1146 if (etype_lookup(p+1) == get_etype(elf)) 1444 if (etype_lookup(p+1) == get_etype(elf))
1147 goto label_ret; 1445 goto label_ret;
1148 } 1446 }
1149 } 1447 }
1169 1467
1170 ar = ar_open_fd(filename, fd); 1468 ar = ar_open_fd(filename, fd);
1171 if (ar == NULL) 1469 if (ar == NULL)
1172 return 1; 1470 return 1;
1173 1471
1174 ar_buffer = (char*)mmap(0, len, PROT_READ | (fix_elf ? PROT_WRITE : 0), (fix_elf ? MAP_SHARED : MAP_PRIVATE), fd, 0); 1472 ar_buffer = mmap(0, len, PROT_READ | (fix_elf ? PROT_WRITE : 0), (fix_elf ? MAP_SHARED : MAP_PRIVATE), fd, 0);
1175 while ((m=ar_next(ar)) != NULL) { 1473 while ((m = ar_next(ar)) != NULL) {
1474 off_t cur_pos = lseek(fd, 0, SEEK_CUR);
1475 if (cur_pos == -1)
1476 errp("lseek() failed");
1176 elf = readelf_buffer(m->name, ar_buffer+lseek(fd,0,SEEK_CUR), m->size); 1477 elf = readelf_buffer(m->name, ar_buffer + cur_pos, m->size);
1177 if (elf) { 1478 if (elf) {
1178 scanelf_elfobj(elf); 1479 scanelf_elfobj(elf);
1179 unreadelf(elf); 1480 unreadelf(elf);
1180 } 1481 }
1181 } 1482 }
1182 munmap(ar_buffer, len); 1483 munmap(ar_buffer, len);
1183 1484
1184 return 0; 1485 return 0;
1185} 1486}
1186/* scan a file which may be an elf or an archive or some other magical beast */ 1487/* scan a file which may be an elf or an archive or some other magical beast */
1187static void scanelf_file(const char *filename) 1488static int scanelf_file(const char *filename, const struct stat *st_cache)
1188{ 1489{
1490 const struct stat *st = st_cache;
1189 struct stat st; 1491 struct stat symlink_st;
1190 int fd; 1492 int fd;
1191 1493
1192 /* make sure 'filename' exists */
1193 if (lstat(filename, &st) == -1) {
1194 if (be_verbose > 2) printf("%s: does not exist\n", filename);
1195 return;
1196 }
1197
1198 /* always handle regular files and handle symlinked files if no -y */ 1494 /* always handle regular files and handle symlinked files if no -y */
1199 if (S_ISLNK(st.st_mode)) { 1495 if (S_ISLNK(st->st_mode)) {
1200 if (!scan_symlink) return; 1496 if (!scan_symlink) return 1;
1201 stat(filename, &st); 1497 stat(filename, &symlink_st);
1498 st = &symlink_st;
1202 } 1499 }
1500
1203 if (!S_ISREG(st.st_mode)) { 1501 if (!S_ISREG(st->st_mode)) {
1204 if (be_verbose > 2) printf("%s: skipping non-file\n", filename); 1502 if (be_verbose > 2) printf("%s: skipping non-file\n", filename);
1205 return; 1503 return 1;
1206 } 1504 }
1207 1505
1506 if (match_perms) {
1507 if ((st->st_mode | match_perms) != st->st_mode)
1508 return 1;
1509 }
1208 if ((fd=open(filename, (fix_elf ? O_RDWR : O_RDONLY))) == -1) 1510 if ((fd=open(filename, (fix_elf ? O_RDWR : O_RDONLY))) == -1)
1209 return; 1511 return 1;
1210 1512
1211 if (scanelf_elf(filename, fd, st.st_size) == 1 && scan_archives) 1513 if (scanelf_elf(filename, fd, st->st_size) == 1 && scan_archives)
1212 /* if it isn't an ELF, maybe it's an .a archive */ 1514 /* if it isn't an ELF, maybe it's an .a archive */
1213 scanelf_archive(filename, fd, st.st_size); 1515 scanelf_archive(filename, fd, st->st_size);
1214 1516
1215 close(fd); 1517 close(fd);
1518 return 0;
1519}
1520
1521static const char *maybe_add_root(const char *fname, char *buf)
1522{
1523 if (root && strncmp(fname, root, strlen(root))) {
1524 strcpy(buf, root);
1525 strncat(buf, fname, __PAX_UTILS_PATH_MAX - strlen(root) - 1);
1526 fname = buf;
1527 }
1528 return fname;
1216} 1529}
1217 1530
1218/* scan a directory for ET_EXEC files and print when we find one */ 1531/* scan a directory for ET_EXEC files and print when we find one */
1219static void scanelf_dir(const char *path) 1532static int scanelf_dir(const char *path)
1220{ 1533{
1221 register DIR *dir; 1534 register DIR *dir;
1222 register struct dirent *dentry; 1535 register struct dirent *dentry;
1223 struct stat st_top, st; 1536 struct stat st_top, st;
1224 char buf[__PAX_UTILS_PATH_MAX]; 1537 char buf[__PAX_UTILS_PATH_MAX];
1538 char _path[__PAX_UTILS_PATH_MAX];
1225 size_t pathlen = 0, len = 0; 1539 size_t pathlen = 0, len = 0;
1540 int ret = 0;
1541
1542 path = maybe_add_root(path, _path);
1226 1543
1227 /* make sure path exists */ 1544 /* make sure path exists */
1228 if (lstat(path, &st_top) == -1) { 1545 if (lstat(path, &st_top) == -1) {
1229 if (be_verbose > 2) printf("%s: does not exist\n", path); 1546 if (be_verbose > 2) printf("%s: does not exist\n", path);
1230 return; 1547 return 1;
1231 } 1548 }
1232 1549
1233 /* ok, if it isn't a directory, assume we can open it */ 1550 /* ok, if it isn't a directory, assume we can open it */
1234 if (!S_ISDIR(st_top.st_mode)) { 1551 if (!S_ISDIR(st_top.st_mode)) {
1235 scanelf_file(path); 1552 return scanelf_file(path, &st_top);
1236 return;
1237 } 1553 }
1238 1554
1239 /* now scan the dir looking for fun stuff */ 1555 /* now scan the dir looking for fun stuff */
1240 if ((dir = opendir(path)) == NULL) { 1556 if ((dir = opendir(path)) == NULL) {
1241 warnf("could not opendir %s: %s", path, strerror(errno)); 1557 warnf("could not opendir %s: %s", path, strerror(errno));
1242 return; 1558 return 1;
1243 } 1559 }
1244 if (be_verbose > 1) printf("%s: scanning dir\n", path); 1560 if (be_verbose > 1) printf("%s: scanning dir\n", path);
1245 1561
1246 pathlen = strlen(path); 1562 pathlen = strlen(path);
1247 while ((dentry = readdir(dir))) { 1563 while ((dentry = readdir(dir))) {
1251 if (len >= sizeof(buf)) { 1567 if (len >= sizeof(buf)) {
1252 warnf("Skipping '%s': len > sizeof(buf); %lu > %lu\n", path, 1568 warnf("Skipping '%s': len > sizeof(buf); %lu > %lu\n", path,
1253 (unsigned long)len, (unsigned long)sizeof(buf)); 1569 (unsigned long)len, (unsigned long)sizeof(buf));
1254 continue; 1570 continue;
1255 } 1571 }
1256 sprintf(buf, "%s/%s", path, dentry->d_name); 1572 snprintf(buf, sizeof(buf), "%s%s%s", path, (path[pathlen-1] == '/') ? "" : "/", dentry->d_name);
1257 if (lstat(buf, &st) != -1) { 1573 if (lstat(buf, &st) != -1) {
1258 if (S_ISREG(st.st_mode)) 1574 if (S_ISREG(st.st_mode))
1259 scanelf_file(buf); 1575 ret = scanelf_file(buf, &st);
1260 else if (dir_recurse && S_ISDIR(st.st_mode)) { 1576 else if (dir_recurse && S_ISDIR(st.st_mode)) {
1261 if (dir_crossmount || (st_top.st_dev == st.st_dev)) 1577 if (dir_crossmount || (st_top.st_dev == st.st_dev))
1262 scanelf_dir(buf); 1578 ret = scanelf_dir(buf);
1263 } 1579 }
1264 } 1580 }
1265 } 1581 }
1266 closedir(dir); 1582 closedir(dir);
1583 return ret;
1267} 1584}
1268 1585
1269static int scanelf_from_file(const char *filename) 1586static int scanelf_from_file(const char *filename)
1270{ 1587{
1271 FILE *fp = NULL; 1588 FILE *fp = NULL;
1272 char *p; 1589 char *p;
1273 char path[__PAX_UTILS_PATH_MAX]; 1590 char path[__PAX_UTILS_PATH_MAX];
1591 int ret = 0;
1274 1592
1275 if (strcmp(filename, "-") == 0) 1593 if (strcmp(filename, "-") == 0)
1276 fp = stdin; 1594 fp = stdin;
1277 else if ((fp = fopen(filename, "r")) == NULL) 1595 else if ((fp = fopen(filename, "r")) == NULL)
1278 return 1; 1596 return 1;
1279 1597
1280 while ((fgets(path, __PAX_UTILS_PATH_MAX, fp)) != NULL) { 1598 while ((fgets(path, __PAX_UTILS_PATH_MAX, fp)) != NULL) {
1281 if ((p = strchr(path, '\n')) != NULL) 1599 if ((p = strchr(path, '\n')) != NULL)
1282 *p = 0; 1600 *p = 0;
1283 search_path = path; 1601 search_path = path;
1284 scanelf_dir(path); 1602 ret = scanelf_dir(path);
1285 } 1603 }
1286 if (fp != stdin) 1604 if (fp != stdin)
1287 fclose(fp); 1605 fclose(fp);
1288 return 0; 1606 return ret;
1289} 1607}
1290 1608
1291#if defined(__GLIBC__) || defined(__UCLIBC__) 1609#if defined(__GLIBC__) || defined(__UCLIBC__) || defined(__NetBSD__)
1610
1292static int load_ld_so_conf(int i, const char *fname) 1611static int load_ld_cache_config(int i, const char *fname)
1293{ 1612{
1294 FILE *fp = NULL; 1613 FILE *fp = NULL;
1295 char *p; 1614 char *p;
1296 char path[__PAX_UTILS_PATH_MAX]; 1615 char path[__PAX_UTILS_PATH_MAX];
1616 char _fname[__PAX_UTILS_PATH_MAX];
1297 1617
1298 if (i + 1 == sizeof(ldpaths) / sizeof(*ldpaths)) 1618 fname = maybe_add_root(fname, _fname);
1299 return i;
1300 1619
1301 if ((fp = fopen(fname, "r")) == NULL) 1620 if ((fp = fopen(fname, "r")) == NULL)
1302 return i; 1621 return i;
1303 1622
1304 while ((fgets(path, __PAX_UTILS_PATH_MAX, fp)) != NULL) { 1623 while ((fgets(path, __PAX_UTILS_PATH_MAX, fp)) != NULL) {
1305 if ((p = strrchr(path, '\r')) != NULL) 1624 if ((p = strrchr(path, '\r')) != NULL)
1306 *p = 0; 1625 *p = 0;
1307 if ((p = strchr(path, '\n')) != NULL) 1626 if ((p = strchr(path, '\n')) != NULL)
1308 *p = 0; 1627 *p = 0;
1628
1309 // recursive includes of the same file will make this segfault. 1629 /* recursive includes of the same file will make this segfault. */
1310 if ((memcmp(path, "include", 7) == 0) && isblank(path[7])) { 1630 if ((memcmp(path, "include", 7) == 0) && isblank(path[7])) {
1311 glob64_t gl; 1631 glob_t gl;
1312 size_t x; 1632 size_t x;
1313 char gpath[__PAX_UTILS_PATH_MAX]; 1633 char gpath[__PAX_UTILS_PATH_MAX];
1314 1634
1315 memset(gpath, 0, sizeof(gpath)); 1635 memset(gpath, 0, sizeof(gpath));
1636 if (root)
1637 strcpy(gpath, root);
1316 1638
1317 if (path[8] != '/') 1639 if (path[8] != '/')
1318 snprintf(gpath, sizeof(gpath), "/etc/%s", &path[8]); 1640 snprintf(gpath+strlen(gpath), sizeof(gpath)-strlen(gpath), "/etc/%s", &path[8]);
1319 else 1641 else
1320 strncpy(gpath, &path[8], sizeof(gpath)); 1642 strncpy(gpath+strlen(gpath), &path[8], sizeof(gpath)-strlen(gpath));
1321 1643
1322 if ((glob64(gpath, 0, NULL, &gl)) == 0) { 1644 if (glob(gpath, 0, NULL, &gl) == 0) {
1323 for (x = 0; x < gl.gl_pathc; ++x) { 1645 for (x = 0; x < gl.gl_pathc; ++x) {
1324 /* try to avoid direct loops */ 1646 /* try to avoid direct loops */
1325 if (strcmp(gl.gl_pathv[x], fname) == 0) 1647 if (strcmp(gl.gl_pathv[x], fname) == 0)
1326 continue; 1648 continue;
1327 i = load_ld_so_conf(i, gl.gl_pathv[x]); 1649 i = load_ld_cache_config(i, gl.gl_pathv[x]);
1328 if (i + 1 >= sizeof(ldpaths) / sizeof(*ldpaths)) {
1329 globfree64(&gl);
1330 return i;
1331 }
1332 } 1650 }
1333 globfree64 (&gl); 1651 globfree(&gl);
1334 continue; 1652 continue;
1335 } else
1336 abort();
1337 } 1653 }
1654 }
1655
1338 if (*path != '/') 1656 if (*path != '/')
1339 continue; 1657 continue;
1340 1658
1341 ldpaths[i++] = xstrdup(path); 1659 xarraypush(ldpaths, path, strlen(path));
1342
1343 if (i + 1 == sizeof(ldpaths) / sizeof(*ldpaths))
1344 break;
1345 } 1660 }
1346 ldpaths[i] = NULL;
1347 1661
1348 fclose(fp); 1662 fclose(fp);
1349 return i; 1663 return i;
1350} 1664}
1351#endif
1352 1665
1353#if defined(__FreeBSD__) || (__DragonFly__) 1666#elif defined(__FreeBSD__) || defined(__DragonFly__)
1667
1354static int load_ld_so_hints(int i, const char *fname) 1668static int load_ld_cache_config(int i, const char *fname)
1355{ 1669{
1356 FILE *fp = NULL; 1670 FILE *fp = NULL;
1357 char *b = NULL, *p; 1671 char *b = NULL, *p;
1358 struct elfhints_hdr hdr; 1672 struct elfhints_hdr hdr;
1359 1673 char _fname[__PAX_UTILS_PATH_MAX];
1360 if (i + 1 == sizeof(ldpaths) / sizeof(*ldpaths)) 1674
1361 return i; 1675 fname = maybe_add_root(fname, _fname);
1362 1676
1363 if ((fp = fopen(fname, "r")) == NULL) 1677 if ((fp = fopen(fname, "r")) == NULL)
1364 return i; 1678 return i;
1365 1679
1366 if ( fread(&hdr, 1, sizeof(hdr), fp) != sizeof(hdr) || 1680 if (fread(&hdr, 1, sizeof(hdr), fp) != sizeof(hdr) ||
1367 hdr.magic != ELFHINTS_MAGIC || hdr.version != 1 || 1681 hdr.magic != ELFHINTS_MAGIC || hdr.version != 1 ||
1368 fseek(fp, hdr.strtab + hdr.dirlist, SEEK_SET) == -1 1682 fseek(fp, hdr.strtab + hdr.dirlist, SEEK_SET) == -1)
1369 ) { 1683 {
1370 fclose(fp); 1684 fclose(fp);
1371 return i; 1685 return i;
1372 } 1686 }
1373 1687
1374 b = (char*)malloc(hdr.dirlistlen+1); 1688 b = xmalloc(hdr.dirlistlen + 1);
1375 if ( fread(b, 1, hdr.dirlistlen+1, fp) != hdr.dirlistlen+1 ) { 1689 if (fread(b, 1, hdr.dirlistlen+1, fp) != hdr.dirlistlen+1) {
1376 fclose(fp); 1690 fclose(fp);
1377 free(b); 1691 free(b);
1378 return i; 1692 return i;
1379 } 1693 }
1380 1694
1381 while ( (p = strsep(&b, ":")) ) { 1695 while ((p = strsep(&b, ":"))) {
1382 if ( *p == '\0' ) continue; 1696 if (*p == '\0')
1383 ldpaths[i++] = xstrdup(p); 1697 continue;
1384 1698 xarraypush(ldpaths, p, strlen(p));
1385 if (i + 1 == sizeof(ldpaths) / sizeof(*ldpaths))
1386 break;
1387 } 1699 }
1388 ldpaths[i] = NULL; 1700
1389
1390 free(b); 1701 free(b);
1391 fclose(fp); 1702 fclose(fp);
1392 return i; 1703 return i;
1393} 1704}
1705
1706#else
1707#ifdef __ELF__
1708#warning Cache config support not implemented for your target
1394#endif 1709#endif
1710static int load_ld_cache_config(int i, const char *fname)
1711{
1712 return 0;
1713}
1714#endif
1395 1715
1396/* scan /etc/ld.so.conf for paths */ 1716/* scan /etc/ld.so.conf for paths */
1397static void scanelf_ldpath() 1717static void scanelf_ldpath(void)
1398{ 1718{
1399 char scan_l, scan_ul, scan_ull; 1719 char scan_l, scan_ul, scan_ull;
1720 size_t n;
1721 const char *ldpath;
1400 int i = 0; 1722 int i = 0;
1401 1723
1402 if (!ldpaths[0]) 1724 if (array_cnt(ldpaths) == 0)
1403 err("Unable to load any paths from ld.so.conf"); 1725 err("Unable to load any paths from ld.so.conf");
1404 1726
1405 scan_l = scan_ul = scan_ull = 0; 1727 scan_l = scan_ul = scan_ull = 0;
1406 1728
1407 while (ldpaths[i]) { 1729 array_for_each(ldpaths, n, ldpath) {
1408 if (!scan_l && !strcmp(ldpaths[i], "/lib")) scan_l = 1; 1730 if (!scan_l && !strcmp(ldpath, "/lib")) scan_l = 1;
1409 if (!scan_ul && !strcmp(ldpaths[i], "/usr/lib")) scan_ul = 1; 1731 if (!scan_ul && !strcmp(ldpath, "/usr/lib")) scan_ul = 1;
1410 if (!scan_ull && !strcmp(ldpaths[i], "/usr/local/lib")) scan_ull = 1; 1732 if (!scan_ull && !strcmp(ldpath, "/usr/local/lib")) scan_ull = 1;
1411 scanelf_dir(ldpaths[i]); 1733 scanelf_dir(ldpath);
1412 ++i; 1734 ++i;
1413 } 1735 }
1414 1736
1415 if (!scan_l) scanelf_dir("/lib"); 1737 if (!scan_l) scanelf_dir("/lib");
1416 if (!scan_ul) scanelf_dir("/usr/lib"); 1738 if (!scan_ul) scanelf_dir("/usr/lib");
1417 if (!scan_ull) scanelf_dir("/usr/local/lib"); 1739 if (!scan_ull) scanelf_dir("/usr/local/lib");
1418} 1740}
1419 1741
1420/* scan env PATH for paths */ 1742/* scan env PATH for paths */
1421static void scanelf_envpath() 1743static void scanelf_envpath(void)
1422{ 1744{
1423 char *path, *p; 1745 char *path, *p;
1424 1746
1425 path = getenv("PATH"); 1747 path = getenv("PATH");
1426 if (!path) 1748 if (!path)
1433 } 1755 }
1434 1756
1435 free(path); 1757 free(path);
1436} 1758}
1437 1759
1438/* usage / invocation handling functions */ 1760/* usage / invocation handling functions */ /* Free Flags: c d j u w G H J K P Q U W */
1439#define PARSE_FLAGS "plRmyAXz:xetrnLibSs:k:gN:TaqvF:f:o:E:M:BhV" 1761#define PARSE_FLAGS "plRmyAXz:xetrnLibSs:k:gN:TaqvF:f:o:E:M:DIYO:ZCBhV"
1440#define a_argument required_argument 1762#define a_argument required_argument
1441static struct option const long_opts[] = { 1763static struct option const long_opts[] = {
1442 {"path", no_argument, NULL, 'p'}, 1764 {"path", no_argument, NULL, 'p'},
1443 {"ldpath", no_argument, NULL, 'l'}, 1765 {"ldpath", no_argument, NULL, 'l'},
1766 {"root", a_argument, NULL, 128},
1444 {"recursive", no_argument, NULL, 'R'}, 1767 {"recursive", no_argument, NULL, 'R'},
1445 {"mount", no_argument, NULL, 'm'}, 1768 {"mount", no_argument, NULL, 'm'},
1446 {"symlink", no_argument, NULL, 'y'}, 1769 {"symlink", no_argument, NULL, 'y'},
1447 {"archives", no_argument, NULL, 'A'}, 1770 {"archives", no_argument, NULL, 'A'},
1448 {"ldcache", no_argument, NULL, 'L'}, 1771 {"ldcache", no_argument, NULL, 'L'},
1461 {"lib", a_argument, NULL, 'N'}, 1784 {"lib", a_argument, NULL, 'N'},
1462 {"gmatch", no_argument, NULL, 'g'}, 1785 {"gmatch", no_argument, NULL, 'g'},
1463 {"textrels", no_argument, NULL, 'T'}, 1786 {"textrels", no_argument, NULL, 'T'},
1464 {"etype", a_argument, NULL, 'E'}, 1787 {"etype", a_argument, NULL, 'E'},
1465 {"bits", a_argument, NULL, 'M'}, 1788 {"bits", a_argument, NULL, 'M'},
1789 {"endian", no_argument, NULL, 'D'},
1790 {"osabi", no_argument, NULL, 'I'},
1791 {"eabi", no_argument, NULL, 'Y'},
1792 {"perms", a_argument, NULL, 'O'},
1793 {"size", no_argument, NULL, 'Z'},
1466 {"all", no_argument, NULL, 'a'}, 1794 {"all", no_argument, NULL, 'a'},
1467 {"quiet", no_argument, NULL, 'q'}, 1795 {"quiet", no_argument, NULL, 'q'},
1468 {"verbose", no_argument, NULL, 'v'}, 1796 {"verbose", no_argument, NULL, 'v'},
1469 {"format", a_argument, NULL, 'F'}, 1797 {"format", a_argument, NULL, 'F'},
1470 {"from", a_argument, NULL, 'f'}, 1798 {"from", a_argument, NULL, 'f'},
1471 {"file", a_argument, NULL, 'o'}, 1799 {"file", a_argument, NULL, 'o'},
1800 {"nocolor", no_argument, NULL, 'C'},
1472 {"nobanner", no_argument, NULL, 'B'}, 1801 {"nobanner", no_argument, NULL, 'B'},
1473 {"help", no_argument, NULL, 'h'}, 1802 {"help", no_argument, NULL, 'h'},
1474 {"version", no_argument, NULL, 'V'}, 1803 {"version", no_argument, NULL, 'V'},
1475 {NULL, no_argument, NULL, 0x0} 1804 {NULL, no_argument, NULL, 0x0}
1476}; 1805};
1477 1806
1478static const char *opts_help[] = { 1807static const char * const opts_help[] = {
1479 "Scan all directories in PATH environment", 1808 "Scan all directories in PATH environment",
1480 "Scan all directories in /etc/ld.so.conf", 1809 "Scan all directories in /etc/ld.so.conf",
1810 "Root directory (use with -l or -p)",
1481 "Scan directories recursively", 1811 "Scan directories recursively",
1482 "Don't recursively cross mount points", 1812 "Don't recursively cross mount points",
1483 "Don't scan symlinks", 1813 "Don't scan symlinks",
1484 "Scan archives (.a files)", 1814 "Scan archives (.a files)",
1485 "Utilize ld.so.cache information (use with -r/-n)", 1815 "Utilize ld.so.cache information (use with -r/-n)",
1494 "Print BIND information", 1824 "Print BIND information",
1495 "Print SONAME information", 1825 "Print SONAME information",
1496 "Find a specified symbol", 1826 "Find a specified symbol",
1497 "Find a specified section", 1827 "Find a specified section",
1498 "Find a specified library", 1828 "Find a specified library",
1499 "Use strncmp to match libraries. (use with -N)", 1829 "Use regex matching rather than string compare (use with -s)",
1500 "Locate cause of TEXTREL", 1830 "Locate cause of TEXTREL",
1501 "Print only ELF files matching etype ET_DYN,ET_EXEC ...", 1831 "Print only ELF files matching etype ET_DYN,ET_EXEC ...",
1502 "Print only ELF files matching numeric bits", 1832 "Print only ELF files matching numeric bits",
1503 "Print all scanned info (-x -e -t -r -b)\n", 1833 "Print Endianness",
1834 "Print OSABI",
1835 "Print EABI (EM_ARM Only)",
1836 "Print only ELF files matching octal permissions",
1837 "Print ELF file size",
1838 "Print all useful/simple info\n",
1504 "Only output 'bad' things", 1839 "Only output 'bad' things",
1505 "Be verbose (can be specified more than once)", 1840 "Be verbose (can be specified more than once)",
1506 "Use specified format for output", 1841 "Use specified format for output",
1507 "Read input stream from a filename", 1842 "Read input stream from a filename",
1508 "Write output stream to a filename", 1843 "Write output stream to a filename",
1844 "Don't emit color in output",
1509 "Don't display the header", 1845 "Don't display the header",
1510 "Print this help and exit", 1846 "Print this help and exit",
1511 "Print version and exit", 1847 "Print version and exit",
1512 NULL 1848 NULL
1513}; 1849};
1519 printf("* Scan ELF binaries for stuff\n\n" 1855 printf("* Scan ELF binaries for stuff\n\n"
1520 "Usage: %s [options] <dir1/file1> [dir2 dirN file2 fileN ...]\n\n", argv0); 1856 "Usage: %s [options] <dir1/file1> [dir2 dirN file2 fileN ...]\n\n", argv0);
1521 printf("Options: -[%s]\n", PARSE_FLAGS); 1857 printf("Options: -[%s]\n", PARSE_FLAGS);
1522 for (i = 0; long_opts[i].name; ++i) 1858 for (i = 0; long_opts[i].name; ++i)
1523 if (long_opts[i].has_arg == no_argument) 1859 if (long_opts[i].has_arg == no_argument)
1524 printf(" -%c, --%-14s* %s\n", long_opts[i].val, 1860 printf(" -%c, --%-14s* %s\n", long_opts[i].val,
1861 long_opts[i].name, opts_help[i]);
1862 else if (long_opts[i].val > '~')
1863 printf(" --%-7s <arg> * %s\n",
1525 long_opts[i].name, opts_help[i]); 1864 long_opts[i].name, opts_help[i]);
1526 else 1865 else
1527 printf(" -%c, --%-7s <arg> * %s\n", long_opts[i].val, 1866 printf(" -%c, --%-7s <arg> * %s\n", long_opts[i].val,
1528 long_opts[i].name, opts_help[i]); 1867 long_opts[i].name, opts_help[i]);
1529 1868
1530 if (status != EXIT_SUCCESS) 1869 puts("\nFor more information, see the scanelf(1) manpage");
1531 exit(status);
1532
1533 puts("\nThe format modifiers for the -F option are:");
1534 puts(" F Filename \tx PaX Flags \te STACK/RELRO");
1535 puts(" t TEXTREL \tr RPATH \tn NEEDED");
1536 puts(" i INTERP \tb BIND \ts symbol");
1537 puts(" N library \to Type \tT TEXTRELs");
1538 puts(" S SONAME \tk section");
1539 puts(" p filename (with search path removed)");
1540 puts(" f filename (short name/basename)");
1541 puts("Prefix each modifier with '%' (verbose) or '#' (silent)");
1542
1543 puts("\nELF Etypes:");
1544 print_etypes(stdout);
1545
1546 exit(status); 1870 exit(status);
1547} 1871}
1548 1872
1549/* parse command line arguments and preform needed actions */ 1873/* parse command line arguments and preform needed actions */
1874#define do_pax_state(option, flag) \
1875 if (islower(option)) { \
1876 flags &= ~PF_##flag; \
1877 flags |= PF_NO##flag; \
1878 } else { \
1879 flags &= ~PF_NO##flag; \
1880 flags |= PF_##flag; \
1881 }
1550static void parseargs(int argc, char *argv[]) 1882static int parseargs(int argc, char *argv[])
1551{ 1883{
1552 int i; 1884 int i;
1553 const char *from_file = NULL; 1885 const char *from_file = NULL;
1886 int ret = 0;
1554 1887
1555 opterr = 0; 1888 opterr = 0;
1556 while ((i=getopt_long(argc, argv, PARSE_FLAGS, long_opts, NULL)) != -1) { 1889 while ((i=getopt_long(argc, argv, PARSE_FLAGS, long_opts, NULL)) != -1) {
1557 switch (i) { 1890 switch (i) {
1558 1891
1566 case 'f': 1899 case 'f':
1567 if (from_file) warn("You prob don't want to specify -f twice"); 1900 if (from_file) warn("You prob don't want to specify -f twice");
1568 from_file = optarg; 1901 from_file = optarg;
1569 break; 1902 break;
1570 case 'E': 1903 case 'E':
1571 strncpy(match_etypes, optarg, sizeof(match_etypes)); 1904 match_etypes = optarg;
1572 break; 1905 break;
1573 case 'M': 1906 case 'M':
1574 match_bits = atoi(optarg); 1907 match_bits = atoi(optarg);
1908 if (match_bits == 0) {
1909 if (strcmp(optarg, "ELFCLASS32") == 0)
1910 match_bits = 32;
1911 if (strcmp(optarg, "ELFCLASS64") == 0)
1912 match_bits = 64;
1913 }
1914 break;
1915 case 'O':
1916 if (sscanf(optarg, "%o", &match_perms) == -1)
1917 match_bits = 0;
1575 break; 1918 break;
1576 case 'o': { 1919 case 'o': {
1577 FILE *fp = NULL;
1578 if ((fp = freopen(optarg, "w", stdout)) == NULL) 1920 if (freopen(optarg, "w", stdout) == NULL)
1579 err("Could not open output stream '%s': %s", optarg, strerror(errno)); 1921 err("Could not open output stream '%s': %s", optarg, strerror(errno));
1580 SET_STDOUT(fp);
1581 break; 1922 break;
1582 } 1923 }
1583 case 'k': 1924 case 'k':
1584 if (find_section) warn("You prob don't want to specify -k twice"); 1925 xarraypush(find_section_arr, optarg, strlen(optarg));
1585 find_section = optarg;
1586 break; 1926 break;
1587 case 's': { 1927 case 's': {
1588 if (find_sym) warn("You prob don't want to specify -s twice"); 1928 if (find_sym) warn("You prob don't want to specify -s twice");
1589 find_sym = optarg; 1929 find_sym = optarg;
1590 versioned_symname = (char*)xmalloc(sizeof(char) * (strlen(find_sym)+1+1));
1591 sprintf(versioned_symname, "%s@", find_sym);
1592 break; 1930 break;
1593 } 1931 }
1594 case 'N': { 1932 case 'N':
1595 if (find_lib) warn("You prob don't want to specify -N twice"); 1933 xarraypush(find_lib_arr, optarg, strlen(optarg));
1596 find_lib = optarg;
1597 break; 1934 break;
1598 }
1599
1600 case 'F': { 1935 case 'F': {
1601 if (out_format) warn("You prob don't want to specify -F twice"); 1936 if (out_format) warn("You prob don't want to specify -F twice");
1602 out_format = optarg; 1937 out_format = optarg;
1603 break; 1938 break;
1604 } 1939 }
1605 case 'z': { 1940 case 'z': {
1606 unsigned long flags = (PF_NOEMUTRAMP | PF_NORANDEXEC); 1941 unsigned long flags = (PF_NOEMUTRAMP | PF_NORANDEXEC);
1607 size_t x; 1942 size_t x;
1608 1943
1609 for (x = 0 ; x < strlen(optarg); x++) { 1944 for (x = 0; x < strlen(optarg); x++) {
1610 switch(optarg[x]) { 1945 switch (optarg[x]) {
1611 case 'p': 1946 case 'p':
1612 case 'P': 1947 case 'P':
1613 do_state(optarg[x], PAGEEXEC); 1948 do_pax_state(optarg[x], PAGEEXEC);
1614 break; 1949 break;
1615 case 's': 1950 case 's':
1616 case 'S': 1951 case 'S':
1617 do_state(optarg[x], SEGMEXEC); 1952 do_pax_state(optarg[x], SEGMEXEC);
1618 break; 1953 break;
1619 case 'm': 1954 case 'm':
1620 case 'M': 1955 case 'M':
1621 do_state(optarg[x], MPROTECT); 1956 do_pax_state(optarg[x], MPROTECT);
1622 break; 1957 break;
1623 case 'e': 1958 case 'e':
1624 case 'E': 1959 case 'E':
1625 do_state(optarg[x], EMUTRAMP); 1960 do_pax_state(optarg[x], EMUTRAMP);
1626 break; 1961 break;
1627 case 'r': 1962 case 'r':
1628 case 'R': 1963 case 'R':
1629 do_state(optarg[x], RANDMMAP); 1964 do_pax_state(optarg[x], RANDMMAP);
1630 break; 1965 break;
1631 case 'x': 1966 case 'x':
1632 case 'X': 1967 case 'X':
1633 do_state(optarg[x], RANDEXEC); 1968 do_pax_state(optarg[x], RANDEXEC);
1634 break; 1969 break;
1635 default: 1970 default:
1636 break; 1971 break;
1637 } 1972 }
1638 } 1973 }
1643 ((flags & PF_EMUTRAMP) && (flags & PF_NOEMUTRAMP)) || 1978 ((flags & PF_EMUTRAMP) && (flags & PF_NOEMUTRAMP)) ||
1644 ((flags & PF_RANDMMAP) && (flags & PF_NORANDMMAP)))) 1979 ((flags & PF_RANDMMAP) && (flags & PF_NORANDMMAP))))
1645 setpax = flags; 1980 setpax = flags;
1646 break; 1981 break;
1647 } 1982 }
1983 case 'Z': show_size = 1; break;
1648 case 'g': gmatch = 1; break; 1984 case 'g': g_match = 1; break;
1649 case 'L': use_ldcache = 1; break; 1985 case 'L': use_ldcache = 1; break;
1650 case 'y': scan_symlink = 0; break; 1986 case 'y': scan_symlink = 0; break;
1651 case 'A': scan_archives = 1; break; 1987 case 'A': scan_archives = 1; break;
1988 case 'C': color_init(true); break;
1652 case 'B': show_banner = 0; break; 1989 case 'B': show_banner = 0; break;
1653 case 'l': scan_ldpath = 1; break; 1990 case 'l': scan_ldpath = 1; break;
1654 case 'p': scan_envpath = 1; break; 1991 case 'p': scan_envpath = 1; break;
1655 case 'R': dir_recurse = 1; break; 1992 case 'R': dir_recurse = 1; break;
1656 case 'm': dir_crossmount = 0; break; 1993 case 'm': dir_crossmount = 0; break;
1664 case 'b': show_bind = 1; break; 2001 case 'b': show_bind = 1; break;
1665 case 'S': show_soname = 1; break; 2002 case 'S': show_soname = 1; break;
1666 case 'T': show_textrels = 1; break; 2003 case 'T': show_textrels = 1; break;
1667 case 'q': be_quiet = 1; break; 2004 case 'q': be_quiet = 1; break;
1668 case 'v': be_verbose = (be_verbose % 20) + 1; break; 2005 case 'v': be_verbose = (be_verbose % 20) + 1; break;
1669 case 'a': show_pax = show_phdr = show_textrel = show_rpath = show_bind = 1; break; 2006 case 'a': show_perms = show_pax = show_phdr = show_textrel = show_rpath = show_bind = show_endian = 1; break;
1670 2007 case 'D': show_endian = 1; break;
2008 case 'I': show_osabi = 1; break;
2009 case 'Y': show_eabi = 1; break;
2010 case 128:
2011 root = optarg;
2012 break;
1671 case ':': 2013 case ':':
1672 err("Option '%c' is missing parameter", optopt); 2014 err("Option '%c' is missing parameter", optopt);
1673 case '?': 2015 case '?':
1674 err("Unknown option '%c' or argument missing", optopt); 2016 err("Unknown option '%c' or argument missing", optopt);
1675 default: 2017 default:
1676 err("Unhandled option '%c'; please report this", i); 2018 err("Unhandled option '%c'; please report this", i);
1677 } 2019 }
1678 } 2020 }
1679 2021 if (show_textrels && be_verbose) {
2022 if (which("objdump") != NULL)
2023 has_objdump = 1;
2024 }
2025 /* flatten arrays for display */
2026 if (array_cnt(find_lib_arr))
2027 find_lib = array_flatten_str(find_lib_arr);
2028 if (array_cnt(find_section_arr))
2029 find_section = array_flatten_str(find_section_arr);
1680 /* let the format option override all other options */ 2030 /* let the format option override all other options */
1681 if (out_format) { 2031 if (out_format) {
1682 show_pax = show_phdr = show_textrel = show_rpath = \ 2032 show_pax = show_phdr = show_textrel = show_rpath = \
1683 show_needed = show_interp = show_bind = show_soname = \ 2033 show_needed = show_interp = show_bind = show_soname = \
1684 show_textrels = 0; 2034 show_textrels = show_perms = show_endian = show_size = \
2035 show_osabi = show_eabi = 0;
1685 for (i = 0; out_format[i]; ++i) { 2036 for (i = 0; out_format[i]; ++i) {
1686 if (!IS_MODIFIER(out_format[i])) continue; 2037 if (!IS_MODIFIER(out_format[i])) continue;
1687 2038
1688 switch (out_format[++i]) { 2039 switch (out_format[++i]) {
1689 case '+': break; 2040 case '+': break;
1694 case 'f': break; 2045 case 'f': break;
1695 case 'k': break; 2046 case 'k': break;
1696 case 's': break; 2047 case 's': break;
1697 case 'N': break; 2048 case 'N': break;
1698 case 'o': break; 2049 case 'o': break;
2050 case 'a': break;
2051 case 'M': break;
2052 case 'Z': show_size = 1; break;
2053 case 'D': show_endian = 1; break;
2054 case 'I': show_osabi = 1; break;
2055 case 'Y': show_eabi = 1; break;
2056 case 'O': show_perms = 1; break;
1699 case 'x': show_pax = 1; break; 2057 case 'x': show_pax = 1; break;
1700 case 'e': show_phdr = 1; break; 2058 case 'e': show_phdr = 1; break;
1701 case 't': show_textrel = 1; break; 2059 case 't': show_textrel = 1; break;
1702 case 'r': show_rpath = 1; break; 2060 case 'r': show_rpath = 1; break;
1703 case 'n': show_needed = 1; break; 2061 case 'n': show_needed = 1; break;
1704 case 'i': show_interp = 1; break; 2062 case 'i': show_interp = 1; break;
1705 case 'b': show_bind = 1; break; 2063 case 'b': show_bind = 1; break;
1706 case 'S': show_soname = 1; break; 2064 case 'S': show_soname = 1; break;
1707 case 'T': show_textrels = 1; break; 2065 case 'T': show_textrels = 1; break;
1708 default: 2066 default:
1709 err("Invalid format specifier '%c' (byte %i)", 2067 err("Invalid format specifier '%c' (byte %i)",
1710 out_format[i], i+1); 2068 out_format[i], i+1);
1711 } 2069 }
1712 } 2070 }
1713 2071
1714 /* construct our default format */ 2072 /* construct our default format */
1715 } else { 2073 } else {
1716 size_t fmt_len = 30; 2074 size_t fmt_len = 30;
1717 out_format = (char*)xmalloc(sizeof(char) * fmt_len); 2075 out_format = xmalloc(sizeof(char) * fmt_len);
2076 *out_format = '\0';
1718 if (!be_quiet) xstrcat(&out_format, "%o ", &fmt_len); 2077 if (!be_quiet) xstrcat(&out_format, "%o ", &fmt_len);
1719 if (show_pax) xstrcat(&out_format, "%x ", &fmt_len); 2078 if (show_pax) xstrcat(&out_format, "%x ", &fmt_len);
2079 if (show_perms) xstrcat(&out_format, "%O ", &fmt_len);
2080 if (show_size) xstrcat(&out_format, "%Z ", &fmt_len);
2081 if (show_endian) xstrcat(&out_format, "%D ", &fmt_len);
2082 if (show_osabi) xstrcat(&out_format, "%I ", &fmt_len);
2083 if (show_eabi) xstrcat(&out_format, "%Y ", &fmt_len);
1720 if (show_phdr) xstrcat(&out_format, "%e ", &fmt_len); 2084 if (show_phdr) xstrcat(&out_format, "%e ", &fmt_len);
1721 if (show_textrel) xstrcat(&out_format, "%t ", &fmt_len); 2085 if (show_textrel) xstrcat(&out_format, "%t ", &fmt_len);
1722 if (show_rpath) xstrcat(&out_format, "%r ", &fmt_len); 2086 if (show_rpath) xstrcat(&out_format, "%r ", &fmt_len);
1723 if (show_needed) xstrcat(&out_format, "%n ", &fmt_len); 2087 if (show_needed) xstrcat(&out_format, "%n ", &fmt_len);
1724 if (show_interp) xstrcat(&out_format, "%i ", &fmt_len); 2088 if (show_interp) xstrcat(&out_format, "%i ", &fmt_len);
1732 } 2096 }
1733 if (be_verbose > 2) printf("Format: %s\n", out_format); 2097 if (be_verbose > 2) printf("Format: %s\n", out_format);
1734 2098
1735 /* now lets actually do the scanning */ 2099 /* now lets actually do the scanning */
1736 if (scan_ldpath || use_ldcache) 2100 if (scan_ldpath || use_ldcache)
1737#if defined(__GLIBC__) || defined(__UCLIBC__) 2101 load_ld_cache_config(0, __PAX_UTILS_DEFAULT_LD_CACHE_CONFIG);
1738 load_ld_so_conf(0, "/etc/ld.so.conf");
1739#elif defined(__FreeBSD__) || defined(__DragonFly__)
1740 load_ld_so_hints(0, _PATH_ELF_HINTS);
1741#endif
1742 if (scan_ldpath) scanelf_ldpath(); 2102 if (scan_ldpath) scanelf_ldpath();
1743 if (scan_envpath) scanelf_envpath(); 2103 if (scan_envpath) scanelf_envpath();
1744 if (!from_file && optind == argc && ttyname(0) == NULL) 2104 if (!from_file && optind == argc && ttyname(0) == NULL && !scan_ldpath && !scan_envpath)
1745 from_file = "-"; 2105 from_file = "-";
1746 if (from_file) { 2106 if (from_file) {
1747 scanelf_from_file(from_file); 2107 scanelf_from_file(from_file);
1748 from_file = *argv; 2108 from_file = *argv;
1749 } 2109 }
1750 if (optind == argc && !scan_ldpath && !scan_envpath && !from_file) 2110 if (optind == argc && !scan_ldpath && !scan_envpath && !from_file)
1751 err("Nothing to scan !?"); 2111 err("Nothing to scan !?");
1752 while (optind < argc) { 2112 while (optind < argc) {
1753 search_path = argv[optind++]; 2113 search_path = argv[optind++];
1754 scanelf_dir(search_path); 2114 ret = scanelf_dir(search_path);
1755 } 2115 }
1756 2116
1757 /* clean up */ 2117 /* clean up */
1758 if (versioned_symname) free(versioned_symname);
1759 for (i = 0; ldpaths[i]; ++i)
1760 free(ldpaths[i]); 2118 xarrayfree(ldpaths);
2119 xarrayfree(find_lib_arr);
2120 xarrayfree(find_section_arr);
2121 free(find_lib);
2122 free(find_section);
1761 2123
1762 if (ldcache != 0) 2124 if (ldcache != 0)
1763 munmap(ldcache, ldcache_size); 2125 munmap(ldcache, ldcache_size);
1764}
1765
1766
1767
1768/* utility funcs */
1769static char *xstrdup(const char *s)
1770{
1771 char *ret = strdup(s);
1772 if (!ret) err("Could not strdup(): %s", strerror(errno));
1773 return ret; 2126 return ret;
1774} 2127}
1775static void *xmalloc(size_t size)
1776{
1777 void *ret = malloc(size);
1778 if (!ret) err("Could not malloc() %li bytes", (unsigned long)size);
1779 return ret;
1780}
1781static void xstrncat(char **dst, const char *src, size_t *curr_len, size_t n)
1782{
1783 size_t new_len;
1784 2128
1785 new_len = strlen(*dst) + strlen(src); 2129static char **get_split_env(const char *envvar)
1786 if (*curr_len <= new_len) {
1787 *curr_len = new_len + (*curr_len / 2);
1788 *dst = realloc(*dst, *curr_len);
1789 if (!*dst)
1790 err("could not realloc() %li bytes", (unsigned long)*curr_len);
1791 }
1792
1793 if (n)
1794 strncat(*dst, src, n);
1795 else
1796 strcat(*dst, src);
1797}
1798static inline void xchrcat(char **dst, const char append, size_t *curr_len)
1799{ 2130{
1800 static char my_app[2]; 2131 const char *delims = " \t\n";
1801 my_app[0] = append; 2132 char **envvals = NULL;
1802 my_app[1] = '\0'; 2133 char *env, *s;
1803 xstrcat(dst, my_app, curr_len); 2134 int nentry;
1804}
1805 2135
2136 if ((env = getenv(envvar)) == NULL)
2137 return NULL;
1806 2138
2139 env = xstrdup(env);
2140 if (env == NULL)
2141 return NULL;
2142
2143 s = strtok(env, delims);
2144 if (s == NULL) {
2145 free(env);
2146 return NULL;
2147 }
2148
2149 nentry = 0;
2150 while (s != NULL) {
2151 ++nentry;
2152 envvals = xrealloc(envvals, sizeof(*envvals) * (nentry+1));
2153 envvals[nentry-1] = s;
2154 s = strtok(NULL, delims);
2155 }
2156 envvals[nentry] = NULL;
2157
2158 /* don't want to free(env) as it contains the memory that backs
2159 * the envvals array of strings */
2160 return envvals;
2161}
2162
2163static void parseenv(void)
2164{
2165 color_init(false);
2166 qa_textrels = get_split_env("QA_TEXTRELS");
2167 qa_execstack = get_split_env("QA_EXECSTACK");
2168 qa_wx_load = get_split_env("QA_WX_LOAD");
2169}
2170
2171#ifdef __PAX_UTILS_CLEANUP
2172static void cleanup(void)
2173{
2174 free(out_format);
2175 free(qa_textrels);
2176 free(qa_execstack);
2177 free(qa_wx_load);
2178}
2179#endif
1807 2180
1808int main(int argc, char *argv[]) 2181int main(int argc, char *argv[])
1809{ 2182{
2183 int ret;
1810 if (argc < 2) 2184 if (argc < 2)
1811 usage(EXIT_FAILURE); 2185 usage(EXIT_FAILURE);
2186 parseenv();
1812 parseargs(argc, argv); 2187 ret = parseargs(argc, argv);
1813 fclose(stdout); 2188 fclose(stdout);
1814#ifdef __BOUNDS_CHECKING_ON 2189#ifdef __PAX_UTILS_CLEANUP
1815 warn("The calls to add/delete heap should be off by 1 due to the out_buffer not being freed in scanelf_file()"); 2190 cleanup();
2191 warn("The calls to add/delete heap should be off:\n"
2192 "\t- 1 due to the out_buffer not being freed in scanelf_file()\n"
2193 "\t- 1 per QA_TEXTRELS/QA_EXECSTACK/QA_WX_LOAD");
1816#endif 2194#endif
1817 return EXIT_SUCCESS; 2195 return ret;
1818} 2196}
2197
2198/* Match filename against entries in matchlist, return TRUE
2199 * if the file is listed */
2200static int file_matches_list(const char *filename, char **matchlist)
2201{
2202 char **file;
2203 char *match;
2204 char buf[__PAX_UTILS_PATH_MAX];
2205
2206 if (matchlist == NULL)
2207 return 0;
2208
2209 for (file = matchlist; *file != NULL; file++) {
2210 if (search_path) {
2211 snprintf(buf, sizeof(buf), "%s%s", search_path, *file);
2212 match = buf;
2213 } else {
2214 match = *file;
2215 }
2216 if (fnmatch(match, filename, 0) == 0)
2217 return 1;
2218 }
2219 return 0;
2220}

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