nganhkhoa/ios-kernel-patch
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refactor into ios-classify.h

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comex 2011-09-01 19:37:02 -07:00
parent f181dc4354
commit 928bbd3dfa
1 changed files with 2 additions and 23 deletions
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25
make_kernel_patchfile.c
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@ -3,6 +3,7 @@
#include <data/mach-o/binary.h> #include <data/mach-o/binary.h>
#include <data/mach-o/link.h> #include <data/mach-o/link.h>
#include "lambda.h" #include "lambda.h"
#include <data/ios-classify.h>
extern unsigned char sandbox_armv6_o[], sandbox_armv7_o[]; extern unsigned char sandbox_armv6_o[], sandbox_armv7_o[];
extern unsigned int sandbox_armv6_o_len, sandbox_armv7_o_len; extern unsigned int sandbox_armv6_o_len, sandbox_armv7_o_len;
@ -23,24 +24,6 @@ static inline void patch_with_range(const char *name, addr_t addr, prange_t pr)
({ typeof_to to_[] = to; \ ({ typeof_to to_[] = to; \
patch_with_range(name, addr, (prange_t) {&to_[0], sizeof(to_)}); }) patch_with_range(name, addr, (prange_t) {&to_[0], sizeof(to_)}); })
// the spec macro chooses between alternatives depending on the "class"
// possible "classes": armv6 pre 4.3, armv7 pre 4.3, 4.3.x, 5.0.x
static unsigned int _armv6 = 0;
static unsigned int _armv7 = 1;
static unsigned int _43 = 2;
static unsigned int _50 = 3;
#define spec_(c1, v1, c2, v2, c3, v3, c4, v4, ...) \
(class >= (c1) ? (v1) : \
class >= (c2) ? (v2) : \
class >= (c3) ? (v3) : \
class >= (c4) ? (v4) : \
(die("no valid alternative"), (typeof(v1+0)) 0))
#define spec(args...) spec_(args, 10, 0, 10, 0, 10, 0)
#define is_armv7(binary) (binary->actual_cpusubtype == 9)
addr_t find_sysctl(struct binary *binary, const char *name) { addr_t find_sysctl(struct binary *binary, const char *name) {
addr_t cs = find_string(b_macho_segrange(binary, "__TEXT"), name, 0, MUST_FIND); addr_t cs = find_string(b_macho_segrange(binary, "__TEXT"), name, 0, MUST_FIND);
addr_t csref = find_int32(b_macho_segrange(binary, "__DATA"), cs, MUST_FIND); addr_t csref = find_int32(b_macho_segrange(binary, "__DATA"), cs, MUST_FIND);
@ -48,11 +31,7 @@ addr_t find_sysctl(struct binary *binary, const char *name) {
} }
void do_kernel(struct binary *binary, struct binary *sandbox) { void do_kernel(struct binary *binary, struct binary *sandbox) {
unsigned int class; unsigned int class = classify(binary);
if(!is_armv7(binary)) class = _armv6;
else if(!b_sym(binary, "_vfs_getattr", 0)) class = _armv7;
else if(!b_sym(binary, "_buf_attr", 0)) class = _43;
else class = _50;
addr_t _PE_i_can_has_debugger, _vn_getpath, _memcmp; addr_t _PE_i_can_has_debugger, _vn_getpath, _memcmp;