enum bool
swap_object_headers(
void *mach_header,
struct load_command *load_commands)
{
unsigned long i;
uint32_t magic, ncmds, sizeofcmds, cmd_multiple;
cpu_type_t cputype;
cpu_subtype_t cpusubtype;
struct mach_header *mh;
struct mach_header_64 *mh64;
enum byte_sex target_byte_sex;
struct load_command *lc, l;
struct segment_command *sg;
struct segment_command_64 *sg64;
struct section *s;
struct section_64 *s64;
struct symtab_command *st;
struct dysymtab_command *dyst;
struct symseg_command *ss;
struct fvmlib_command *fl;
struct thread_command *ut;
struct ident_command *id;
struct dylib_command *dl;
struct sub_framework_command *sub;
struct sub_umbrella_command *usub;
struct sub_library_command *lsub;
struct sub_client_command *csub;
struct prebound_dylib_command *pbdylib;
struct dylinker_command *dyld;
struct routines_command *rc;
struct routines_command_64 *rc64;
struct twolevel_hints_command *hints;
struct prebind_cksum_command *cs;
struct uuid_command *uuid;
unsigned long flavor, count, nflavor;
char *p, *state;
magic = *((uint32_t *)mach_header);
if(magic == MH_MAGIC){
mh = (struct mach_header *)mach_header;
ncmds = mh->ncmds;
sizeofcmds = mh->sizeofcmds;
cputype = mh->cputype;
cpusubtype = mh->cpusubtype;
cmd_multiple = 4;
mh64 = NULL;
}
else{
mh64 = (struct mach_header_64 *)mach_header;
ncmds = mh64->ncmds;
sizeofcmds = mh64->sizeofcmds;
cputype = mh64->cputype;
cpusubtype = mh64->cpusubtype;
cmd_multiple = 8;
mh = NULL;
}
/*
* Make a pass through the load commands checking them to the level
* that they can be parsed and then swapped.
*/
for(i = 0, lc = load_commands; i < ncmds; i++){
l = *lc;
/* check load command size for a correct multiple size */
if(lc->cmdsize % cmd_multiple != 0){
error("in swap_object_headers(): malformed load command %lu "
"(cmdsize not a multiple of %u)", i, cmd_multiple);
return(FALSE);
}
/* check that load command does not extends past end of commands */
if((char *)lc + lc->cmdsize >
(char *)load_commands + sizeofcmds){
error("in swap_object_headers(): truncated or malformed load "
"command %lu (extends past the end of the all load "
"commands)", i);
return(FALSE);
}
/* check that the load command size is not zero */
if(lc->cmdsize == 0){
error("in swap_object_headers(): malformed load command %lu "
"(cmdsize is zero)", i);
return(FALSE);
}
switch(lc->cmd){
case LC_SEGMENT:
sg = (struct segment_command *)lc;
if(sg->cmdsize != sizeof(struct segment_command) +
sg->nsects * sizeof(struct section)){
error("in swap_object_headers(): malformed load command "
"(inconsistent cmdsize in LC_SEGMENT command %lu for "
"the number of sections)", i);
return(FALSE);
}
break;
case LC_SEGMENT_64:
sg64 = (struct segment_command_64 *)lc;
if(sg64->cmdsize != sizeof(struct segment_command_64) +
sg64->nsects * sizeof(struct section_64)){
error("in swap_object_headers(): malformed load command "
"(inconsistent cmdsize in LC_SEGMENT_64 command %lu "
"for the number of sections)", i);
return(FALSE);
}
break;
case LC_SYMTAB:
st = (struct symtab_command *)lc;
if(st->cmdsize != sizeof(struct symtab_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_SYMTAB command %lu has incorrect cmdsize", i);
return(FALSE);
}
break;
case LC_DYSYMTAB:
dyst = (struct dysymtab_command *)lc;
if(dyst->cmdsize != sizeof(struct dysymtab_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_DYSYMTAB command %lu has incorrect cmdsize", i);
return(FALSE);
}
break;
case LC_SYMSEG:
ss = (struct symseg_command *)lc;
if(ss->cmdsize != sizeof(struct symseg_command)){
error("in swap_object_headers(): malformed load command "
"(LC_SYMSEG command %lu has incorrect cmdsize", i);
return(FALSE);
}
break;
case LC_IDFVMLIB:
case LC_LOADFVMLIB:
fl = (struct fvmlib_command *)lc;
if(fl->cmdsize < sizeof(struct fvmlib_command)){
error("in swap_object_headers(): malformed load commands "
"(%s command %lu has too small cmdsize field)",
fl->cmd == LC_IDFVMLIB ? "LC_IDFVMLIB" :
"LC_LOADFVMLIB", i);
return(FALSE);
}
if(fl->fvmlib.name.offset >= fl->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (name.offset field of %s command %lu "
"extends past the end of all load commands)",
fl->cmd == LC_IDFVMLIB ? "LC_IDFVMLIB" :
"LC_LOADFVMLIB", i);
return(FALSE);
}
break;
case LC_ID_DYLIB:
case LC_LOAD_DYLIB:
case LC_LOAD_WEAK_DYLIB:
dl = (struct dylib_command *)lc;
if(dl->cmdsize < sizeof(struct dylib_command)){
error("in swap_object_headers(): malformed load commands "
"(%s command %lu has too small cmdsize field)",
dl->cmd == LC_ID_DYLIB ? "LC_ID_DYLIB" :
(dl->cmd == LC_LOAD_DYLIB ? "LC_LOAD_DYLIB" :
"LC_LOAD_WEAK_DYLIB"), i);
return(FALSE);
}
if(dl->dylib.name.offset >= dl->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (name.offset field of %s command %lu "
"extends past the end of all load commands)",
dl->cmd == LC_ID_DYLIB ? "LC_ID_DYLIB" :
(dl->cmd == LC_LOAD_DYLIB ? "LC_LOAD_DYLIB" :
"LC_LOAD_WEAK_DYLIB"), i);
return(FALSE);
}
break;
case LC_SUB_FRAMEWORK:
sub = (struct sub_framework_command *)lc;
if(sub->cmdsize < sizeof(struct sub_framework_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_SUB_FRAMEWORK command %lu has too small cmdsize "
"field)", i);
return(FALSE);
}
if(sub->umbrella.offset >= sub->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (umbrella.offset field of "
"LC_SUB_FRAMEWORK command %lu extends past the end "
"of all load commands)", i);
return(FALSE);
}
break;
case LC_SUB_UMBRELLA:
usub = (struct sub_umbrella_command *)lc;
if(usub->cmdsize < sizeof(struct sub_umbrella_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_SUB_UMBRELLA command %lu has too small cmdsize "
"field)", i);
return(FALSE);
}
if(usub->sub_umbrella.offset >= usub->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (sub_umbrella.offset field of "
"LC_SUB_UMBRELLA command %lu extends past the end "
"of all load commands)", i);
return(FALSE);
}
break;
case LC_SUB_LIBRARY:
lsub = (struct sub_library_command *)lc;
if(lsub->cmdsize < sizeof(struct sub_library_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_SUB_LIBRARY command %lu has too small cmdsize "
"field)", i);
return(FALSE);
}
if(lsub->sub_library.offset >= lsub->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (sub_library.offset field of "
"LC_SUB_LIBRARY command %lu extends past the end "
"of all load commands)", i);
return(FALSE);
}
break;
case LC_SUB_CLIENT:
csub = (struct sub_client_command *)lc;
if(csub->cmdsize < sizeof(struct sub_client_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_SUB_CLIENT command %lu has too small cmdsize "
"field)", i);
return(FALSE);
}
if(csub->client.offset >= csub->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (client.offset field of "
"LC_SUB_CLIENT command %lu extends past the end "
"of all load commands)", i);
return(FALSE);
}
break;
case LC_PREBOUND_DYLIB:
pbdylib = (struct prebound_dylib_command *)lc;
if(pbdylib->cmdsize < sizeof(struct prebound_dylib_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_PREBOUND_DYLIB command %lu has too small "
"cmdsize field)", i);
return(FALSE);
}
if(pbdylib->name.offset >= pbdylib->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (name.offset field of "
"LC_PREBOUND_DYLIB command %lu extends past the end "
"of all load commands)", i);
return(FALSE);
}
if(pbdylib->linked_modules.offset >= pbdylib->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (linked_modules.offset field of "
"LC_PREBOUND_DYLIB command %lu extends past the end "
"of all load commands)", i);
return(FALSE);
}
break;
case LC_ID_DYLINKER:
case LC_LOAD_DYLINKER:
dyld = (struct dylinker_command *)lc;
if(dyld->cmdsize < sizeof(struct dylinker_command)){
error("in swap_object_headers(): malformed load commands "
"(%s command %lu has too small cmdsize field)",
dyld->cmd == LC_ID_DYLINKER ? "LC_ID_DYLINKER" :
"LC_LOAD_DYLINKER", i);
return(FALSE);
}
if(dyld->name.offset >= dyld->cmdsize){
error("in swap_object_headers(): truncated or malformed "
"load commands (name.offset field of %s command %lu "
"extends past the end of all load commands)",
dyld->cmd == LC_ID_DYLINKER ? "LC_ID_DYLINKER" :
"LC_LOAD_DYLINKER", i);
return(FALSE);
}
break;
case LC_UNIXTHREAD:
case LC_THREAD:
ut = (struct thread_command *)lc;
state = (char *)ut + sizeof(struct thread_command);
if(cputype == CPU_TYPE_MC680x0){
struct m68k_thread_state_regs *cpu;
struct m68k_thread_state_68882 *fpu;
struct m68k_thread_state_user_reg *user_reg;
nflavor = 0;
p = (char *)ut + ut->cmdsize;
while(state < p){
flavor = *((unsigned long *)state);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
state += sizeof(unsigned long);
switch(flavor){
case M68K_THREAD_STATE_REGS:
if(count != M68K_THREAD_STATE_REGS_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not M68K_THREAD_STATE_REGS_COUNT for "
"flavor number %lu which is a M68K_THREAD_"
"STATE_REGS flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
cpu = (struct m68k_thread_state_regs *)state;
state += sizeof(struct m68k_thread_state_regs);
break;
case M68K_THREAD_STATE_68882:
if(count != M68K_THREAD_STATE_68882_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not M68K_THREAD_STATE_68882_COUNT for "
"flavor number %lu which is a M68K_THREAD_"
"STATE_68882 flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
fpu = (struct m68k_thread_state_68882 *)state;
state += sizeof(struct m68k_thread_state_68882);
break;
case M68K_THREAD_STATE_USER_REG:
if(count != M68K_THREAD_STATE_USER_REG_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not M68K_THREAD_STATE_USER_REG_COUNT for "
"flavor number %lu which is a M68K_THREAD_"
"STATE_USER_REG flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
user_reg =
(struct m68k_thread_state_user_reg *)state;
state += sizeof(struct m68k_thread_state_user_reg);
break;
default:
error("in swap_object_headers(): malformed "
"load commands (unknown "
"flavor %lu for flavor number %lu in %s command"
" %lu can't byte swap it)", flavor, nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
nflavor++;
}
break;
}
if(cputype == CPU_TYPE_POWERPC ||
cputype == CPU_TYPE_VEO ||
cputype == CPU_TYPE_POWERPC64){
ppc_thread_state_t *cpu;
ppc_float_state_t *fpu;
ppc_exception_state_t *except;
ppc_thread_state64_t *cpu64;
nflavor = 0;
p = (char *)ut + ut->cmdsize;
while(state < p){
flavor = *((unsigned long *)state);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
state += sizeof(unsigned long);
switch(flavor){
case PPC_THREAD_STATE:
if(count != PPC_THREAD_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not PPC_THREAD_STATE_COUNT for "
"flavor number %lu which is a PPC_THREAD_"
"STATE flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
cpu = (ppc_thread_state_t *)state;
state += sizeof(ppc_thread_state_t);
break;
case PPC_FLOAT_STATE:
if(count != PPC_FLOAT_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not PPC_FLOAT_STATE_COUNT for "
"flavor number %lu which is a PPC_FLOAT_"
"STATE flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
fpu = (ppc_float_state_t *)state;
state += sizeof(ppc_float_state_t);
break;
case PPC_EXCEPTION_STATE:
if(count != PPC_EXCEPTION_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not PPC_EXCEPTION_STATE_COUNT for "
"flavor number %lu which is a PPC_EXCEPT"
"ION_STATE flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
except = (ppc_exception_state_t *)state;
state += sizeof(ppc_exception_state_t);
break;
case PPC_THREAD_STATE64:
if(count != PPC_THREAD_STATE64_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not PPC_THREAD_STATE64_COUNT for "
"flavor number %lu which is a PPC_THREAD_"
"STATE64 flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
cpu64 = (ppc_thread_state64_t *)state;
state += sizeof(ppc_thread_state64_t);
break;
default:
error("in swap_object_headers(): malformed "
"load commands (unknown "
"flavor %lu for flavor number %lu in %s command"
" %lu can't byte swap it)", flavor, nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
nflavor++;
}
break;
}
if(cputype == CPU_TYPE_MC88000){
m88k_thread_state_grf_t *cpu;
m88k_thread_state_xrf_t *fpu;
m88k_thread_state_user_t *user;
m88110_thread_state_impl_t *spu;
nflavor = 0;
p = (char *)ut + ut->cmdsize;
while(state < p){
flavor = *((unsigned long *)state);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
state += sizeof(unsigned long);
switch(flavor){
case M88K_THREAD_STATE_GRF:
if(count != M88K_THREAD_STATE_GRF_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not M88K_THREAD_STATE_GRF_COUNT for "
"flavor number %lu which is a M88K_THREAD_"
"STATE_GRF flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
cpu = (m88k_thread_state_grf_t *)state;
state += sizeof(m88k_thread_state_grf_t);
break;
case M88K_THREAD_STATE_XRF:
if(count != M88K_THREAD_STATE_XRF_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not M88K_THREAD_STATE_XRF_COUNT for "
"flavor number %lu which is a M88K_THREAD_"
"STATE_XRF flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
fpu = (m88k_thread_state_xrf_t *)state;
state += sizeof(m88k_thread_state_xrf_t);
break;
case M88K_THREAD_STATE_USER:
if(count != M88K_THREAD_STATE_USER_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not M88K_THREAD_STATE_USER_COUNT for "
"flavor number %lu which is a M88K_THREAD_"
"STATE_USER flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
user = (m88k_thread_state_user_t *)state;
state += sizeof(m88k_thread_state_user_t);
break;
case M88110_THREAD_STATE_IMPL:
if(count != M88110_THREAD_STATE_IMPL_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not M88110_THREAD_STATE_IMPL_COUNT for "
"flavor number %lu which is a M88110_THREAD"
"_STATE_IMPL flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
spu = (m88110_thread_state_impl_t *)state;
state += sizeof(m88110_thread_state_impl_t);
break;
default:
error("in swap_object_headers(): malformed "
"load commands (unknown "
"flavor %lu for flavor number %lu in %s command"
" %lu can't byte swap it)", flavor, nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
nflavor++;
}
break;
}
if(cputype == CPU_TYPE_I860){
struct i860_thread_state_regs *cpu;
nflavor = 0;
p = (char *)ut + ut->cmdsize;
while(state < p){
flavor = *((unsigned long *)state);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
state += sizeof(unsigned long);
switch(flavor){
case I860_THREAD_STATE_REGS:
if(count != I860_THREAD_STATE_REGS_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not I860_THREAD_STATE_REGS_COUNT for "
"flavor number %lu which is a I860_THREAD_"
"STATE_REGS flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
cpu = (struct i860_thread_state_regs *)state;
state += sizeof(struct i860_thread_state_regs);
break;
default:
error("in swap_object_headers(): malformed "
"load commands (unknown "
"flavor %lu for flavor number %lu in %s command"
" %lu can't byte swap it)", flavor, nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
nflavor++;
}
break;
}
if(cputype == CPU_TYPE_I386
#ifdef x86_THREAD_STATE64
|| cputype == CPU_TYPE_X86_64
#endif /* x86_THREAD_STATE64 */
){
i386_thread_state_t *cpu;
#ifdef x86_THREAD_STATE64
x86_thread_state64_t *cpu64;
#endif /* x86_THREAD_STATE64 */
/* current i386 thread states */
#if i386_THREAD_STATE == 1
struct i386_float_state *fpu;
i386_exception_state_t *exc;
#endif /* i386_THREAD_STATE == 1 */
/* i386 thread states on older releases */
#if i386_THREAD_STATE == -1
i386_thread_fpstate_t *fpu;
i386_thread_exceptstate_t *exc;
i386_thread_cthreadstate_t *user;
#endif /* i386_THREAD_STATE == -1 */
nflavor = 0;
p = (char *)ut + ut->cmdsize;
while(state < p){
flavor = *((unsigned long *)state);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
state += sizeof(unsigned long);
switch(flavor){
case i386_THREAD_STATE:
/* current i386 thread states */
#if i386_THREAD_STATE == 1
case -1:
#endif /* i386_THREAD_STATE == 1 */
/* i386 thread states on older releases */
#if i386_THREAD_STATE == -1
case 1:
#endif /* i386_THREAD_STATE == -1 */
if(count != i386_THREAD_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not i386_THREAD_STATE_COUNT for flavor "
"number %lu which is a i386_THREAD_STATE "
"flavor in %s command %lu)", nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
cpu = (i386_thread_state_t *)state;
state += sizeof(i386_thread_state_t);
break;
/* current i386 thread states */
#if i386_THREAD_STATE == 1
case i386_FLOAT_STATE:
if(count != i386_FLOAT_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not i386_FLOAT_STATE_COUNT for flavor "
"number %lu which is a i386_FLOAT_STATE "
"flavor in %s command %lu)", nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
fpu = (struct i386_float_state *)state;
state += sizeof(struct i386_float_state);
break;
case i386_EXCEPTION_STATE:
if(count != I386_EXCEPTION_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not I386_EXCEPTION_STATE_COUNT for "
"flavor number %lu which is a i386_"
"EXCEPTION_STATE flavor in %s command %lu)",
nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
exc = (i386_exception_state_t *)state;
state += sizeof(i386_exception_state_t);
break;
#endif /* i386_THREAD_STATE == 1 */
/* i386 thread states on older releases */
#if i386_THREAD_STATE == -1
case i386_THREAD_FPSTATE:
if(count != i386_THREAD_FPSTATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not i386_THREAD_FPSTATE_COUNT for flavor "
"number %lu which is a i386_THREAD_FPSTATE "
"flavor in %s command %lu)", nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
fpu = (i386_thread_fpstate_t *)state;
state += sizeof(i386_thread_fpstate_t);
break;
case i386_THREAD_EXCEPTSTATE:
if(count != i386_THREAD_EXCEPTSTATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not i386_THREAD_EXCEPTSTATE_COUNT for "
"flavor number %lu which is a i386_THREAD_"
"EXCEPTSTATE flavor in %s command %lu)",
nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
exc = (i386_thread_exceptstate_t *)state;
state += sizeof(i386_thread_fpstate_t);
break;
case i386_THREAD_CTHREADSTATE:
if(count != i386_THREAD_CTHREADSTATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not i386_THREAD_CTHREADSTATE_COUNT for "
"flavor number %lu which is a i386_THREAD_"
"CTHREADSTATE flavor in %s command %lu)",
nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
user = (i386_thread_cthreadstate_t *)state;
state += sizeof(i386_thread_fpstate_t);
break;
#endif /* i386_THREAD_STATE == -1 */
#ifdef x86_THREAD_STATE64
case x86_THREAD_STATE64:
if(count != x86_THREAD_STATE64_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not x86_THREAD_STATE64_COUNT for "
"flavor number %lu which is an x86_THREAD_"
"STATE64 flavor in %s command %lu)",
nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
cpu64 = (x86_thread_state64_t *)state;
state += sizeof(x86_thread_state64_t);
break;
#endif /* x86_THREAD_STATE64 */
default:
error("in swap_object_headers(): malformed "
"load commands (unknown "
"flavor %lu for flavor number %lu in %s command"
" %lu can't byte swap it)", flavor, nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
nflavor++;
}
break;
}
if(cputype == CPU_TYPE_HPPA){
struct hp_pa_integer_thread_state *cpu;
struct hp_pa_frame_thread_state *frame;
struct hp_pa_fp_thread_state *fpu;
nflavor = 0;
p = (char *)ut + ut->cmdsize;
while(state < p){
flavor = *((unsigned long *)state);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
state += sizeof(unsigned long);
switch(flavor){
case HPPA_INTEGER_THREAD_STATE:
if(count != HPPA_INTEGER_THREAD_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not HPPA_INTEGER_THREAD_STATE_COUNT for "
"flavor number %lu which is a HPPA_INTEGER"
"_THREAD_STATE flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
cpu = (struct hp_pa_integer_thread_state *)state;
state += sizeof(struct hp_pa_integer_thread_state);
break;
case HPPA_FRAME_THREAD_STATE:
if(count != HPPA_FRAME_THREAD_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not HPPA_FRAME_THREAD_STATE_COUNT for "
"flavor number %lu which is a HPPA_FRAME"
"_THREAD_STATE flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
frame = (struct hp_pa_frame_thread_state *)state;
state += sizeof(struct hp_pa_frame_thread_state);
break;
case HPPA_FP_THREAD_STATE:
if(count != HPPA_FP_THREAD_STATE_COUNT){
error("in swap_object_headers(): malformed "
"load commands (count "
"not HPPA_FP_THREAD_STATE_COUNT for "
"flavor number %lu which is a HPPA_FP"
"_THREAD_STATE flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
fpu = (struct hp_pa_fp_thread_state *)state;
state += sizeof(struct hp_pa_fp_thread_state);
break;
default:
error("in swap_object_headers(): malformed "
"load commands (unknown "
"flavor %lu for flavor number %lu in %s command"
" %lu can't byte swap it)", flavor, nflavor,
ut->cmd == LC_UNIXTHREAD ? "LC_UNIXTHREAD" :
"LC_THREAD", i);
return(FALSE);
}
nflavor++;
}
break;
}
if(cputype == CPU_TYPE_SPARC) {
struct sparc_thread_state_regs *cpu;
struct sparc_thread_state_fpu *fpu;
nflavor = 0;
p = (char *)ut + ut->cmdsize;
while (state < p) {
flavor = *((unsigned long *) state);
state += sizeof(unsigned long);
count = *((unsigned int *) state);
state += sizeof(unsigned long);
switch (flavor) {
case SPARC_THREAD_STATE_REGS:
if (count != SPARC_THREAD_STATE_REGS_COUNT) {
error("in swap_object_headers(): malformed "
"load commands (count "
"not SPARC_THREAD_STATE_REGS_COUNT for "
"flavor number %lu which is a SPARC_THREAD_"
"STATE_REGS flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
cpu = (struct sparc_thread_state_regs *) state;
state += sizeof(struct sparc_thread_state_regs);
break;
case SPARC_THREAD_STATE_FPU:
if (count != SPARC_THREAD_STATE_FPU_COUNT) {
error("in swap_object_headers(): malformed "
"load commands (count "
"not SPARC_THREAD_STATE_FPU_COUNT for "
"flavor number %lu which is a SPARC_THREAD_"
"STATE_FPU flavor in %s command %lu)",
nflavor, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
}
fpu = (struct sparc_thread_state_fpu *) state;
state += sizeof(struct sparc_thread_state_fpu);
break;
}
}
break;
}
if (cputype == CPU_TYPE_ARM) {
nflavor = 0;
p = (char *)ut + ut->cmdsize;
while (state < p) {
state += 8 + sizeof(arm_thread_state_t);
nflavor++;
}
break;
}
error("in swap_object_headers(): malformed load commands "
"(unknown cputype (%d) and cpusubtype (%d) of object and "
"can't byte swap %s command %lu)", cputype,
cpusubtype, ut->cmd == LC_UNIXTHREAD ?
"LC_UNIXTHREAD" : "LC_THREAD", i);
return(FALSE);
case LC_IDENT:
id = (struct ident_command *)lc;
if((char *)id + id->cmdsize >
(char *)load_commands + sizeofcmds){
error("in swap_object_headers(): truncated or malformed "
"load commands (cmdsize field of LC_IDENT command %lu "
"extends past the end of the load commands)", i);
return(FALSE);
}
break;
case LC_ROUTINES:
rc = (struct routines_command *)lc;
if(rc->cmdsize != sizeof(struct routines_command)){
error("in swap_object_headers(): malformed load commands ("
"LC_ROUTINES command %lu has incorrect cmdsize",
i);
return(FALSE);
}
break;
case LC_ROUTINES_64:
rc64 = (struct routines_command_64 *)lc;
if(rc64->cmdsize != sizeof(struct routines_command_64)){
error("in swap_object_headers(): malformed load commands ("
"LC_ROUTINES_64 command %lu has incorrect cmdsize",
i);
return(FALSE);
}
break;
case LC_TWOLEVEL_HINTS:
hints = (struct twolevel_hints_command *)lc;
if(hints->cmdsize != sizeof(struct twolevel_hints_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_TWOLEVEL_HINTS command %lu has incorrect "
"cmdsize", i);
return(FALSE);
}
break;
case LC_PREBIND_CKSUM:
cs = (struct prebind_cksum_command *)lc;
if(cs->cmdsize != sizeof(struct prebind_cksum_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_PREBIND_CKSUM command %lu has incorrect cmdsize",
i);
return(FALSE);
}
break;
case LC_UUID:
uuid = (struct uuid_command *)lc;
if(uuid->cmdsize != sizeof(struct uuid_command)){
error("in swap_object_headers(): malformed load commands "
"(LC_UUID command %lu has incorrect cmdsize", i);
return(FALSE);
}
break;
default:
error("in swap_object_headers(): malformed load commands "
"(unknown load command %lu)", i);
return(FALSE);
}
lc = (struct load_command *)((char *)lc + l.cmdsize);
/* check that next load command does not extends past the end */
if((char *)lc > (char *)load_commands + sizeofcmds){
error("in swap_object_headers(): truncated or malformed load "
"commands (load command %lu extends past the end of all "
"load commands)", i + 1);
return(FALSE);
}
}
/* check for an inconsistent size of the load commands */
if((char *)load_commands + sizeofcmds != (char *)lc){
error("in swap_object_headers(): malformed load commands "
"(inconsistent sizeofcmds field in mach header)");
return(FALSE);
}
/*
* Now knowing the load commands can be parsed swap them.
*/
target_byte_sex = get_host_byte_sex() == BIG_ENDIAN_BYTE_SEX ?
LITTLE_ENDIAN_BYTE_SEX : BIG_ENDIAN_BYTE_SEX;
for(i = 0, lc = load_commands; i < ncmds; i++){
l = *lc;
switch(lc->cmd){
case LC_SEGMENT:
sg = (struct segment_command *)lc;
s = (struct section *)
((char *)sg + sizeof(struct segment_command));
swap_section(s, sg->nsects, target_byte_sex);
swap_segment_command(sg, target_byte_sex);
break;
case LC_SEGMENT_64:
sg64 = (struct segment_command_64 *)lc;
s64 = (struct section_64 *)
((char *)sg64 + sizeof(struct segment_command_64));
swap_section_64(s64, sg64->nsects, target_byte_sex);
swap_segment_command_64(sg64, target_byte_sex);
break;
case LC_SYMTAB:
st = (struct symtab_command *)lc;
swap_symtab_command(st, target_byte_sex);
break;
case LC_DYSYMTAB:
dyst = (struct dysymtab_command *)lc;
swap_dysymtab_command(dyst, target_byte_sex);
break;
case LC_SYMSEG:
ss = (struct symseg_command *)lc;
swap_symseg_command(ss, target_byte_sex);
break;
case LC_IDFVMLIB:
case LC_LOADFVMLIB:
fl = (struct fvmlib_command *)lc;
swap_fvmlib_command(fl, target_byte_sex);
break;
case LC_ID_DYLIB:
case LC_LOAD_DYLIB:
case LC_LOAD_WEAK_DYLIB:
dl = (struct dylib_command *)lc;
swap_dylib_command(dl, target_byte_sex);
break;
case LC_SUB_FRAMEWORK:
sub = (struct sub_framework_command *)lc;
swap_sub_framework_command(sub, target_byte_sex);
break;
case LC_SUB_UMBRELLA:
usub = (struct sub_umbrella_command *)lc;
swap_sub_umbrella_command(usub, target_byte_sex);
break;
case LC_SUB_LIBRARY:
lsub = (struct sub_library_command *)lc;
swap_sub_library_command(lsub, target_byte_sex);
break;
case LC_SUB_CLIENT:
csub = (struct sub_client_command *)lc;
swap_sub_client_command(csub, target_byte_sex);
break;
case LC_PREBOUND_DYLIB:
pbdylib = (struct prebound_dylib_command *)lc;
swap_prebound_dylib_command(pbdylib, target_byte_sex);
break;
case LC_ID_DYLINKER:
case LC_LOAD_DYLINKER:
dyld = (struct dylinker_command *)lc;
swap_dylinker_command(dyld, target_byte_sex);
break;
case LC_UNIXTHREAD:
case LC_THREAD:
ut = (struct thread_command *)lc;
state = (char *)ut + sizeof(struct thread_command);
p = (char *)ut + ut->cmdsize;
swap_thread_command(ut, target_byte_sex);
if(cputype == CPU_TYPE_MC680x0){
struct m68k_thread_state_regs *cpu;
struct m68k_thread_state_68882 *fpu;
struct m68k_thread_state_user_reg *user_reg;
while(state < p){
flavor = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(flavor);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(count);
state += sizeof(unsigned long);
switch(flavor){
case M68K_THREAD_STATE_REGS:
cpu = (struct m68k_thread_state_regs *)state;
swap_m68k_thread_state_regs(cpu, target_byte_sex);
state += sizeof(struct m68k_thread_state_regs);
break;
case M68K_THREAD_STATE_68882:
fpu = (struct m68k_thread_state_68882 *)state;
swap_m68k_thread_state_68882(fpu, target_byte_sex);
state += sizeof(struct m68k_thread_state_68882);
break;
case M68K_THREAD_STATE_USER_REG:
user_reg =
(struct m68k_thread_state_user_reg *)state;
swap_m68k_thread_state_user_reg(user_reg,
target_byte_sex);
state += sizeof(struct m68k_thread_state_user_reg);
break;
}
}
break;
}
if(cputype == CPU_TYPE_POWERPC ||
cputype == CPU_TYPE_VEO ||
cputype == CPU_TYPE_POWERPC64){
ppc_thread_state_t *cpu;
ppc_thread_state64_t *cpu64;
ppc_float_state_t *fpu;
ppc_exception_state_t *except;
while(state < p){
flavor = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(flavor);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(count);
state += sizeof(unsigned long);
switch(flavor){
case PPC_THREAD_STATE:
cpu = (ppc_thread_state_t *)state;
swap_ppc_thread_state_t(cpu, target_byte_sex);
state += sizeof(ppc_thread_state_t);
break;
case PPC_THREAD_STATE64:
cpu64 = (ppc_thread_state64_t *)state;
swap_ppc_thread_state64_t(cpu64, target_byte_sex);
state += sizeof(ppc_thread_state64_t);
break;
case PPC_FLOAT_STATE:
fpu = (ppc_float_state_t *)state;
swap_ppc_float_state_t(fpu, target_byte_sex);
state += sizeof(ppc_float_state_t);
case PPC_EXCEPTION_STATE:
except = (ppc_exception_state_t *)state;
swap_ppc_exception_state_t(except, target_byte_sex);
state += sizeof(ppc_exception_state_t);
break;
}
}
break;
}
if(cputype == CPU_TYPE_MC88000){
m88k_thread_state_grf_t *cpu;
m88k_thread_state_xrf_t *fpu;
m88k_thread_state_user_t *user;
m88110_thread_state_impl_t *spu;
while(state < p){
flavor = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(flavor);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(count);
state += sizeof(unsigned long);
switch(flavor){
case M88K_THREAD_STATE_GRF:
cpu = (m88k_thread_state_grf_t *)state;
swap_m88k_thread_state_grf_t(cpu,
target_byte_sex);
state += sizeof(m88k_thread_state_grf_t);
break;
case M88K_THREAD_STATE_XRF:
fpu = (m88k_thread_state_xrf_t *)state;
swap_m88k_thread_state_xrf_t(fpu,
target_byte_sex);
state += sizeof(m88k_thread_state_xrf_t);
break;
case M88K_THREAD_STATE_USER:
user = (m88k_thread_state_user_t *)state;
swap_m88k_thread_state_user_t(user,
target_byte_sex);
state += sizeof(m88k_thread_state_user_t);
break;
case M88110_THREAD_STATE_IMPL:
spu = (m88110_thread_state_impl_t *)state;
swap_m88110_thread_state_impl_t(spu,
target_byte_sex);
state += sizeof(m88110_thread_state_impl_t);
break;
}
}
break;
}
if(cputype == CPU_TYPE_I860){
struct i860_thread_state_regs *cpu;
while(state < p){
flavor = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(flavor);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(count);
state += sizeof(unsigned long);
switch(flavor){
case I860_THREAD_STATE_REGS:
cpu = (struct i860_thread_state_regs *)state;
swap_i860_thread_state_regs(cpu, target_byte_sex);
state += sizeof(struct i860_thread_state_regs);
break;
}
}
break;
}
if(cputype == CPU_TYPE_I386
#ifdef x86_THREAD_STATE64
|| cputype == CPU_TYPE_X86_64
#endif /* x86_THREAD_STATE64 */
){
i386_thread_state_t *cpu;
#ifdef x86_THREAD_STATE64
x86_thread_state64_t *cpu64;
#endif /* x86_THREAD_STATE64 */
/* current i386 thread states */
#if i386_THREAD_STATE == 1
struct i386_float_state *fpu;
i386_exception_state_t *exc;
#endif /* i386_THREAD_STATE == 1 */
/* i386 thread states on older releases */
#if i386_THREAD_STATE == -1
i386_thread_fpstate_t *fpu;
i386_thread_exceptstate_t *exc;
i386_thread_cthreadstate_t *user;
#endif /* i386_THREAD_STATE == -1 */
while(state < p){
flavor = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(flavor);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(count);
state += sizeof(unsigned long);
switch(flavor){
case i386_THREAD_STATE:
/* current i386 thread states */
#if i386_THREAD_STATE == 1
case -1:
#endif /* i386_THREAD_STATE == 1 */
/* i386 thread states on older releases */
#if i386_THREAD_STATE == -1
case 1:
#endif /* i386_THREAD_STATE == -1 */
cpu = (i386_thread_state_t *)state;
swap_i386_thread_state(cpu, target_byte_sex);
state += sizeof(i386_thread_state_t);
break;
/* current i386 thread states */
#if i386_THREAD_STATE == 1
case i386_FLOAT_STATE:
fpu = (struct i386_float_state *)state;
swap_i386_float_state(fpu, target_byte_sex);
state += sizeof(struct i386_float_state);
break;
case i386_EXCEPTION_STATE:
exc = (i386_exception_state_t *)state;
swap_i386_exception_state(exc, target_byte_sex);
state += sizeof(i386_exception_state_t);
break;
#endif /* i386_THREAD_STATE == 1 */
/* i386 thread states on older releases */
#if i386_THREAD_STATE == -1
case i386_THREAD_FPSTATE:
fpu = (i386_thread_fpstate_t *)state;
swap_i386_thread_fpstate(fpu, target_byte_sex);
state += sizeof(i386_thread_fpstate_t);
break;
case i386_THREAD_EXCEPTSTATE:
exc = (i386_thread_exceptstate_t *)state;
swap_i386_thread_exceptstate(exc, target_byte_sex);
state += sizeof(i386_thread_exceptstate_t);
break;
case i386_THREAD_CTHREADSTATE:
user = (i386_thread_cthreadstate_t *)state;
swap_i386_thread_cthreadstate(user,target_byte_sex);
state += sizeof(i386_thread_cthreadstate_t);
break;
#endif /* i386_THREAD_STATE == -1 */
#ifdef x86_THREAD_STATE64
case x86_THREAD_STATE64:
cpu64 = (x86_thread_state64_t *)state;
swap_x86_thread_state64(cpu64, target_byte_sex);
state += sizeof(x86_thread_state64_t);
break;
#endif /* x86_THREAD_STATE64 */
}
}
break;
}
if(cputype == CPU_TYPE_HPPA){
struct hp_pa_integer_thread_state *cpu;
struct hp_pa_frame_thread_state *frame;
struct hp_pa_fp_thread_state *fpu;
while(state < p){
flavor = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(flavor);
state += sizeof(unsigned long);
count = *((unsigned long *)state);
*((unsigned long *)state) = SWAP_LONG(count);
state += sizeof(unsigned long);
switch(flavor){
case HPPA_INTEGER_THREAD_STATE:
cpu = (struct hp_pa_integer_thread_state *)state;
swap_hppa_integer_thread_state(cpu,
target_byte_sex);
state += sizeof(struct hp_pa_integer_thread_state);
break;
case HPPA_FRAME_THREAD_STATE:
frame = (struct hp_pa_frame_thread_state *)state;
swap_hppa_frame_thread_state(frame,
target_byte_sex);
state += sizeof(struct hp_pa_frame_thread_state);
break;
case HPPA_FP_THREAD_STATE:
fpu = (struct hp_pa_fp_thread_state *)state;
swap_hppa_fp_thread_state(fpu,
target_byte_sex);
state += sizeof(struct hp_pa_fp_thread_state);
break;
}
}
break;
}
if(cputype == CPU_TYPE_SPARC) {
struct sparc_thread_state_regs *cpu;
struct sparc_thread_state_fpu *fpu;
while (state < p) {
flavor = *((unsigned long *) state);
*((unsigned long *) state) = SWAP_LONG(flavor);
state += sizeof(unsigned long);
count = *((unsigned int *) state);
*((unsigned int *) state) = SWAP_LONG(count);
state += sizeof(unsigned long);
switch (flavor) {
case SPARC_THREAD_STATE_REGS:
cpu = (struct sparc_thread_state_regs *) state;
swap_sparc_thread_state_regs(cpu, target_byte_sex);
state += sizeof(struct sparc_thread_state_regs);
break;
case SPARC_THREAD_STATE_FPU:
fpu = (struct sparc_thread_state_fpu *) state;
swap_sparc_thread_state_fpu(fpu, target_byte_sex);
state += sizeof(struct sparc_thread_state_fpu);
break;
}
}
break;
}
if (cputype == CPU_TYPE_ARM) {
arm_thread_state_t *thread_state;
while (state < p) {
u_int32_t n;
n = *((u_int32_t *)state); *((u_int32_t *)state) = SWAP_LONG(n);
state += 4;
n = *((u_int32_t *)state); *((u_int32_t *)state) = SWAP_LONG(n);
state += 4;
thread_state = (arm_thread_state_t *)state;
swap_arm_thread_state(thread_state, target_byte_sex);
state += sizeof(arm_thread_state_t);
}
}
break;
case LC_IDENT:
id = (struct ident_command *)lc;
swap_ident_command(id, target_byte_sex);
break;
case LC_ROUTINES:
rc = (struct routines_command *)lc;
swap_routines_command(rc, target_byte_sex);
break;
case LC_ROUTINES_64:
rc64 = (struct routines_command_64 *)lc;
swap_routines_command_64(rc64, target_byte_sex);
break;
case LC_TWOLEVEL_HINTS:
hints = (struct twolevel_hints_command *)lc;
swap_twolevel_hints_command(hints, target_byte_sex);
break;
case LC_PREBIND_CKSUM:
cs = (struct prebind_cksum_command *)lc;
swap_prebind_cksum_command(cs, target_byte_sex);
break;
case LC_UUID:
uuid = (struct uuid_command *)lc;
swap_uuid_command(uuid, target_byte_sex);
break;
}
lc = (struct load_command *)((char *)lc + l.cmdsize);
}
if(mh != NULL)
swap_mach_header(mh, target_byte_sex);
else
swap_mach_header_64(mh64, target_byte_sex);
return(TRUE);
}
static int register_mach_header(const char* build, const char* project, const char* path, struct fat_arch* fa, int fd, int* isMachO) {
ssize_t res;
uint32_t magic;
int swap = 0;
struct mach_header* mh = NULL;
struct mach_header_64* mh64 = NULL;
if (isMachO) *isMachO = 0;
res = read(fd, &magic, sizeof(uint32_t));
if (res < sizeof(uint32_t)) { return 0; }
//
// 32-bit, read the rest of the header
//
if (magic == MH_MAGIC || magic == MH_CIGAM) {
if (isMachO) *isMachO = 1;
mh = malloc(sizeof(struct mach_header));
if (mh == NULL) return -1;
memset(mh, 0, sizeof(struct mach_header));
mh->magic = magic;
res = read(fd, &mh->cputype, sizeof(struct mach_header) - sizeof(uint32_t));
if (res < sizeof(struct mach_header) - sizeof(uint32_t)) { return 0; }
if (magic == MH_CIGAM) {
swap = 1;
swap_mach_header(mh, NXHostByteOrder());
}
//
// 64-bit, read the rest of the header
//
} else if (magic == MH_MAGIC_64 || magic == MH_CIGAM_64) {
if (isMachO) *isMachO = 1;
mh64 = malloc(sizeof(struct mach_header_64));
if (mh64 == NULL) return -1;
memset(mh64, 0, sizeof(struct mach_header_64));
mh64->magic = magic;
res = read(fd, &mh64->cputype, sizeof(struct mach_header_64) - sizeof(uint32_t));
if (res < sizeof(struct mach_header_64) - sizeof(uint32_t)) { return 0; }
if (magic == MH_CIGAM_64) {
swap = 1;
swap_mach_header_64(mh64, NXHostByteOrder());
}
//
// Not a Mach-O
//
} else {
return 0;
}
switch (mh64 ? mh64->filetype : mh->filetype) {
case MH_EXECUTE:
case MH_DYLIB:
case MH_BUNDLE:
break;
case MH_OBJECT:
default:
return 0;
}
res = SQL("INSERT INTO mach_o_objects (magic, type, cputype, cpusubtype, flags, build, project, path) VALUES (%u, %u, %u, %u, %u, %Q, %Q, %Q)",
mh64 ? mh64->magic : mh->magic,
mh64 ? mh64->filetype : mh->filetype,
mh64 ? mh64->cputype : mh->cputype,
mh64 ? mh64->cpusubtype : mh->cpusubtype,
mh64 ? mh64->flags : mh->flags,
build, project, path);
uint64_t serial = sqlite3_last_insert_rowid((sqlite3*)_DBPluginGetDataStorePtr());
//
// Information needed to parse the symbol table
//
int count_nsect = 0;
unsigned char text_nsect = NO_SECT;
unsigned char data_nsect = NO_SECT;
unsigned char bss_nsect = NO_SECT;
uint32_t nsyms = 0;
uint8_t *symbols = NULL;
uint32_t strsize = 0;
uint8_t *strings = NULL;
int i;
uint32_t ncmds = mh64 ? mh64->ncmds : mh->ncmds;
for (i = 0; i < ncmds; ++i) {
//
// Read a generic load command into memory.
// At first, we only know it has a type and size.
//
struct load_command lctmp;
ssize_t res = read(fd, &lctmp, sizeof(struct load_command));
if (res < sizeof(struct load_command)) { return 0; }
uint32_t cmd = swap ? OSSwapInt32(lctmp.cmd) : lctmp.cmd;
uint32_t cmdsize = swap ? OSSwapInt32(lctmp.cmdsize) : lctmp.cmdsize;
if (cmdsize == 0) continue;
struct load_command* lc = malloc(cmdsize);
if (lc == NULL) { return 0; }
memset(lc, 0, cmdsize);
memcpy(lc, &lctmp, sizeof(lctmp));
// Read the remainder of the load command.
res = read(fd, (uint8_t*)lc + sizeof(struct load_command), cmdsize - sizeof(struct load_command));
if (res < (cmdsize - sizeof(struct load_command))) { free(lc); return 0; }
//
// LC_LOAD_DYLIB and LC_LOAD_WEAK_DYLIB
// Add dylibs as unresolved "lib" dependencies.
//
if (cmd == LC_LOAD_DYLIB || cmd == LC_LOAD_WEAK_DYLIB) {
struct dylib_command *dylib = (struct dylib_command*)lc;
if (swap) swap_dylib_command(dylib, NXHostByteOrder());
// sections immediately follow the dylib_command structure, and are
// reflected in the cmdsize.
int strsize = dylib->cmdsize - sizeof(struct dylib_command);
char* str = malloc(strsize+1);
strncpy(str, (char*)((uint8_t*)dylib + dylib->dylib.name.offset), strsize);
str[strsize] = 0; // NUL-terminate
res = SQL("INSERT INTO unresolved_dependencies (build,project,type,dependency) VALUES (%Q,%Q,%Q,%Q)",
build, project, "lib", str);
free(str);
//
// LC_LOAD_DYLINKER
// Add the dynamic linker (usually dyld) as an unresolved "lib" dependency.
//
} else if (cmd == LC_LOAD_DYLINKER) {
struct dylinker_command *dylinker = (struct dylinker_command*)lc;
if (swap) swap_dylinker_command(dylinker, NXHostByteOrder());
// sections immediately follow the dylib_command structure, and are
// reflected in the cmdsize.
int strsize = dylinker->cmdsize - sizeof(struct dylinker_command);
char* str = malloc(strsize+1);
strncpy(str, (char*)((uint8_t*)dylinker + dylinker->name.offset), strsize);
str[strsize] = 0; // NUL-terminate
res = SQL("INSERT INTO unresolved_dependencies (build,project,type,dependency) VALUES (%Q,%Q,%Q,%Q)",
build, project, "lib", str);
free(str);
//
// LC_SYMTAB
// Read the symbol table into memory, we'll process it after we're
// done with the load commands.
//
} else if (cmd == LC_SYMTAB && symbols == NULL) {
struct symtab_command *symtab = (struct symtab_command*)lc;
if (swap) swap_symtab_command(symtab, NXHostByteOrder());
nsyms = symtab->nsyms;
uint32_t symsize = nsyms * (mh64 ? sizeof(struct nlist_64) : sizeof(struct nlist));
symbols = malloc(symsize);
strsize = symtab->strsize;
// XXX: check strsize != 0
strings = malloc(strsize);
off_t save = lseek(fd, 0, SEEK_CUR);
off_t origin = fa ? fa->offset : 0;
lseek(fd, (off_t)symtab->symoff + origin, SEEK_SET);
res = read(fd, symbols, symsize);
if (res < symsize) { /* XXX: leaks */ return 0; }
lseek(fd, (off_t)symtab->stroff + origin, SEEK_SET);
res = read(fd, strings, strsize);
if (res < strsize) { /* XXX: leaks */ return 0; }
lseek(fd, save, SEEK_SET);
//
// LC_SEGMENT
// We're looking for the section number of the text, data, and bss segments
// in order to parse symbols.
//
} else if (cmd == LC_SEGMENT) {
struct segment_command* seg = (struct segment_command*)lc;
if (swap) swap_segment_command(seg, NXHostByteOrder());
// sections immediately follow the segment_command structure, and are
// reflected in the cmdsize.
int k;
for (k = 0; k < seg->nsects; ++k) {
struct section* sect = (struct section*)((uint8_t*)seg + sizeof(struct segment_command) + k * sizeof(struct section));
if (swap) swap_section(sect, 1, NXHostByteOrder());
if (strcmp(sect->sectname, SECT_TEXT) == 0 && strcmp(sect->segname, SEG_TEXT) == 0) {
text_nsect = ++count_nsect;
} else if (strcmp(sect->sectname, SECT_DATA) == 0 && strcmp(sect->segname, SEG_DATA) == 0) {
data_nsect = ++count_nsect;
} else if (strcmp(sect->sectname, SECT_BSS) == 0 && strcmp(sect->segname, SEG_DATA) == 0) {
bss_nsect = ++count_nsect;
} else {
++count_nsect;
}
}
//
// LC_SEGMENT_64
// Same as LC_SEGMENT, but for 64-bit binaries.
//
} else if (lc->cmd == LC_SEGMENT_64) {
struct segment_command_64* seg = (struct segment_command_64*)lc;
if (swap) swap_segment_command_64(seg, NXHostByteOrder());
// sections immediately follow the segment_command structure, and are
// reflected in the cmdsize.
int k;
for (k = 0; k < seg->nsects; ++k) {
struct section_64* sect = (struct section_64*)((uint8_t*)seg + sizeof(struct segment_command_64) + k * sizeof(struct section_64));
if (swap) swap_section_64(sect, 1, NXHostByteOrder());
if (strcmp(sect->sectname, SECT_TEXT) == 0 && strcmp(sect->segname, SEG_TEXT) == 0) {
text_nsect = ++count_nsect;
} else if (strcmp(sect->sectname, SECT_DATA) == 0 && strcmp(sect->segname, SEG_DATA) == 0) {
data_nsect = ++count_nsect;
} else if (strcmp(sect->sectname, SECT_BSS) == 0 && strcmp(sect->segname, SEG_DATA) == 0) {
bss_nsect = ++count_nsect;
} else {
++count_nsect;
}
}
}
free(lc);
}
//
// Finished processing the load commands, now insert symbols into the database.
//
int j;
for (j = 0; j < nsyms; ++j) {
struct nlist_64 symbol;
if (mh64) {
memcpy(&symbol, (symbols + j * sizeof(struct nlist_64)), sizeof(struct nlist_64));
if (swap) swap_nlist_64(&symbol, 1, NXHostByteOrder());
} else {
symbol.n_value = 0;
memcpy(&symbol, (symbols + j * sizeof(struct nlist)), sizeof(struct nlist));
if (swap) swap_nlist_64(&symbol, 1, NXHostByteOrder());
// we copied a 32-bit nlist into a 64-bit one, adjust the value accordingly
// all other fields are identical sizes
symbol.n_value >>= 32;
}
char type = '?';
switch (symbol.n_type & N_TYPE) {
case N_UNDF:
case N_PBUD:
type = 'u';
if (symbol.n_value != 0) {
type = 'c';
}
break;
case N_ABS:
type = 'a';
break;
case N_SECT:
if (symbol.n_sect == text_nsect) {
type = 't';
} else if (symbol.n_sect == data_nsect) {
type = 'd';
} else if (symbol.n_sect == bss_nsect) {
type = 'b';
} else {
type = 's';
}
break;
case N_INDR:
type = 'i';
break;
}
// uppercase indicates an externally visible symbol
if ((symbol.n_type & N_EXT) && type != '?') {
type = toupper(type);
}
if (type != '?' && type != 'u' && type != 'c') {
const uint8_t* name = (const uint8_t*)"";
if (symbol.n_un.n_strx != 0) {
name = (uint8_t*)(strings + symbol.n_un.n_strx);
}
res = SQL("INSERT INTO mach_o_symbols VALUES (%lld, \'%c\', %lld, %Q)",
serial,
type,
symbol.n_value,
name);
}
}
return 0;
}