* Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
int cs_force_kill = 0;
int cs_force_hard = 0;
int cs_debug = 0;
+// If set, AMFI will error out early on unsigned code, before evaluation the normal policy.
+int cs_debug_fail_on_unsigned_code = 0;
+// If the previous mode is enabled, we count the resulting failures here.
+unsigned int cs_debug_unsigned_exec_failures = 0;
+unsigned int cs_debug_unsigned_mmap_failures = 0;
+
#if SECURE_KERNEL
-const int cs_enforcement_enable = 1;
+/*
+ * Here we split cs_enforcement_enable into cs_system_enforcement_enable and cs_process_enforcement_enable
+ *
+ * cs_system_enforcement_enable governs whether or not system level code signing enforcement mechanisms
+ * are applied on the system. Today, the only such mechanism is code signing enforcement of the dyld shared
+ * cache.
+ *
+ * cs_process_enforcement_enable governs whether code signing enforcement mechanisms are applied to all
+ * processes or only those that opt into such enforcement.
+ *
+ * (On iOS and related, both of these are set by default. On macOS, only cs_system_enforcement_enable
+ * is set by default. Processes can then be opted into code signing enforcement on a case by case basis.)
+ */
+const int cs_system_enforcement_enable = 1;
+const int cs_process_enforcement_enable = 1;
const int cs_library_val_enable = 1;
#else /* !SECURE_KERNEL */
-int cs_enforcement_panic=0;
+int cs_enforcement_panic = 0;
int cs_relax_platform_task_ports = 0;
#if CONFIG_ENFORCE_SIGNED_CODE
-#define DEFAULT_CS_ENFORCEMENT_ENABLE 1
+#define DEFAULT_CS_SYSTEM_ENFORCEMENT_ENABLE 1
+#define DEFAULT_CS_PROCESS_ENFORCEMENT_ENABLE 1
#else
-#define DEFAULT_CS_ENFORCEMENT_ENABLE 0
+#define DEFAULT_CS_SYSTEM_ENFORCEMENT_ENABLE 1
+#define DEFAULT_CS_PROCESS_ENFORCEMENT_ENABLE 0
#endif
-SECURITY_READ_ONLY_LATE(int) cs_enforcement_enable = DEFAULT_CS_ENFORCEMENT_ENABLE;
+SECURITY_READ_ONLY_LATE(int) cs_system_enforcement_enable = DEFAULT_CS_SYSTEM_ENFORCEMENT_ENABLE;
+SECURITY_READ_ONLY_LATE(int) cs_process_enforcement_enable = DEFAULT_CS_PROCESS_ENFORCEMENT_ENABLE;
#if CONFIG_ENFORCE_LIBRARY_VALIDATION
#define DEFAULT_CS_LIBRARY_VA_ENABLE 1
SYSCTL_INT(_vm, OID_AUTO, cs_force_kill, CTLFLAG_RW | CTLFLAG_LOCKED, &cs_force_kill, 0, "");
SYSCTL_INT(_vm, OID_AUTO, cs_force_hard, CTLFLAG_RW | CTLFLAG_LOCKED, &cs_force_hard, 0, "");
SYSCTL_INT(_vm, OID_AUTO, cs_debug, CTLFLAG_RW | CTLFLAG_LOCKED, &cs_debug, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, cs_debug_fail_on_unsigned_code, CTLFLAG_RW | CTLFLAG_LOCKED,
+ &cs_debug_fail_on_unsigned_code, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, cs_debug_unsigned_exec_failures, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &cs_debug_unsigned_exec_failures, 0, "");
+SYSCTL_UINT(_vm, OID_AUTO, cs_debug_unsigned_mmap_failures, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &cs_debug_unsigned_mmap_failures, 0, "");
SYSCTL_INT(_vm, OID_AUTO, cs_all_vnodes, CTLFLAG_RW | CTLFLAG_LOCKED, &cs_all_vnodes, 0, "");
#if !SECURE_KERNEL
-SYSCTL_INT(_vm, OID_AUTO, cs_enforcement, CTLFLAG_RW | CTLFLAG_LOCKED, &cs_enforcement_enable, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, cs_system_enforcement, CTLFLAG_RD | CTLFLAG_LOCKED, &cs_system_enforcement_enable, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, cs_process_enforcement, CTLFLAG_RW | CTLFLAG_LOCKED, &cs_process_enforcement_enable, 0, "");
SYSCTL_INT(_vm, OID_AUTO, cs_enforcement_panic, CTLFLAG_RW | CTLFLAG_LOCKED, &cs_enforcement_panic, 0, "");
#if !CONFIG_ENFORCE_LIBRARY_VALIDATION
-SYSCTL_INT(_vm, OID_AUTO, cs_library_validation, CTLFLAG_RW | CTLFLAG_LOCKED, &cs_library_val_enable, 0, "");
+SYSCTL_INT(_vm, OID_AUTO, cs_library_validation, CTLFLAG_RD | CTLFLAG_LOCKED, &cs_library_val_enable, 0, "");
#endif
#endif /* !SECURE_KERNEL */
void
cs_init(void)
{
-#if MACH_ASSERT && __x86_64__
+#if MACH_ASSERT
+#if PLATFORM_WatchOS || __x86_64__
panic_on_cs_killed = 1;
-#endif /* MACH_ASSERT && __x86_64__ */
+#endif /* watchos || x86_64 */
+#endif /* MACH_ASSERT */
PE_parse_boot_argn("panic_on_cs_killed", &panic_on_cs_killed,
- sizeof (panic_on_cs_killed));
+ sizeof(panic_on_cs_killed));
#if !SECURE_KERNEL
int disable_cs_enforcement = 0;
- PE_parse_boot_argn("cs_enforcement_disable", &disable_cs_enforcement,
- sizeof (disable_cs_enforcement));
- if (disable_cs_enforcement) {
- cs_enforcement_enable = 0;
+ PE_parse_boot_argn("cs_enforcement_disable", &disable_cs_enforcement,
+ sizeof(disable_cs_enforcement));
+ if (disable_cs_enforcement && PE_i_can_has_debugger(NULL) != 0) {
+ cs_system_enforcement_enable = 0;
+ cs_process_enforcement_enable = 0;
} else {
int panic = 0;
PE_parse_boot_argn("cs_enforcement_panic", &panic, sizeof(panic));
}
PE_parse_boot_argn("cs_relax_platform_task_ports",
- &cs_relax_platform_task_ports,
- sizeof(cs_relax_platform_task_ports));
+ &cs_relax_platform_task_ports,
+ sizeof(cs_relax_platform_task_ports));
- PE_parse_boot_argn("cs_debug", &cs_debug, sizeof (cs_debug));
+ PE_parse_boot_argn("cs_debug", &cs_debug, sizeof(cs_debug));
#if !CONFIG_ENFORCE_LIBRARY_VALIDATION
PE_parse_boot_argn("cs_library_val_enable", &cs_library_val_enable,
- sizeof (cs_library_val_enable));
+ sizeof(cs_library_val_enable));
#endif
#endif /* !SECURE_KERNEL */
#if MACH_ASSERT
lck_mtx_assert(&p->p_mlock, LCK_MTX_ASSERT_NOTOWNED);
#endif
-#if CONFIG_MACF && CONFIG_ENFORCE_SIGNED_CODE
+#if CONFIG_MACF
/* There needs to be a MAC policy to implement this hook, or else the
- * kill bits will be cleared here every time. If we have
+ * kill bits will be cleared here every time. If we have
* CONFIG_ENFORCE_SIGNED_CODE, we can assume there is a policy
- * implementing the hook.
+ * implementing the hook.
*/
- if( 0 != mac_proc_check_run_cs_invalid(p)) {
- if(cs_debug) printf("CODE SIGNING: cs_allow_invalid() "
- "not allowed: pid %d\n",
- p->p_pid);
+ if (0 != mac_proc_check_run_cs_invalid(p)) {
+ if (cs_debug) {
+ printf("CODE SIGNING: cs_allow_invalid() "
+ "not allowed: pid %d\n",
+ p->p_pid);
+ }
return 0;
}
- if(cs_debug) printf("CODE SIGNING: cs_allow_invalid() "
- "allowed: pid %d\n",
- p->p_pid);
+ if (cs_debug) {
+ printf("CODE SIGNING: cs_allow_invalid() "
+ "allowed: pid %d\n",
+ p->p_pid);
+ }
proc_lock(p);
p->p_csflags &= ~(CS_KILL | CS_HARD);
- if (p->p_csflags & CS_VALID)
- {
+ if (p->p_csflags & CS_VALID) {
p->p_csflags |= CS_DEBUGGED;
}
-
proc_unlock(p);
-
+
+ /* allow a debugged process to hide some (debug-only!) memory */
+ task_set_memory_ownership_transfer(p->task, TRUE);
+
vm_map_switch_protect(get_task_map(p->task), FALSE);
#endif
return (p->p_csflags & (CS_KILL | CS_HARD)) == 0;
int
cs_invalid_page(addr64_t vaddr, boolean_t *cs_killed)
{
- struct proc *p;
- int send_kill = 0, retval = 0, verbose = cs_debug;
- uint32_t csflags;
+ struct proc *p;
+ int send_kill = 0, retval = 0, verbose = cs_debug;
+ uint32_t csflags;
p = current_proc();
- if (verbose)
+ if (verbose) {
printf("CODE SIGNING: cs_invalid_page(0x%llx): p=%d[%s]\n",
vaddr, p->p_pid, p->p_comm);
+ }
proc_lock(p);
/* XXX for testing */
- if (cs_force_kill)
+ if (cs_force_kill) {
p->p_csflags |= CS_KILL;
- if (cs_force_hard)
+ }
+ if (cs_force_hard) {
p->p_csflags |= CS_HARD;
+ }
/* CS_KILL triggers a kill signal, and no you can't have the page. Nothing else. */
if (p->p_csflags & CS_KILL) {
send_kill = 1;
retval = 1;
}
-
+
/* CS_HARD means fail the mapping operation so the process stays valid. */
if (p->p_csflags & CS_HARD) {
retval = 1;
csflags = p->p_csflags;
proc_unlock(p);
- if (verbose)
+ if (verbose) {
printf("CODE SIGNING: cs_invalid_page(0x%llx): "
- "p=%d[%s] final status 0x%x, %s page%s\n",
- vaddr, p->p_pid, p->p_comm, p->p_csflags,
- retval ? "denying" : "allowing (remove VALID)",
- send_kill ? " sending SIGKILL" : "");
+ "p=%d[%s] final status 0x%x, %s page%s\n",
+ vaddr, p->p_pid, p->p_comm, p->p_csflags,
+ retval ? "denying" : "allowing (remove VALID)",
+ send_kill ? " sending SIGKILL" : "");
+ }
if (send_kill) {
/* We will set the exit reason for the thread later */
*/
int
-cs_enforcement(struct proc *p)
+cs_process_enforcement(struct proc *p)
{
-
- if (cs_enforcement_enable)
+ if (cs_process_enforcement_enable) {
return 1;
-
- if (p == NULL)
+ }
+
+ if (p == NULL) {
p = current_proc();
+ }
- if (p != NULL && (p->p_csflags & CS_ENFORCEMENT))
+ if (p != NULL && (p->p_csflags & CS_ENFORCEMENT)) {
return 1;
+ }
return 0;
}
+int
+cs_process_global_enforcement(void)
+{
+ return cs_process_enforcement_enable ? 1 : 0;
+}
+
+int
+cs_system_enforcement(void)
+{
+ return cs_system_enforcement_enable ? 1 : 0;
+}
+
/*
* Returns whether a given process is still valid.
*/
int
cs_valid(struct proc *p)
{
-
- if (p == NULL)
+ if (p == NULL) {
p = current_proc();
+ }
- if (p != NULL && (p->p_csflags & CS_VALID))
+ if (p != NULL && (p->p_csflags & CS_VALID)) {
return 1;
+ }
return 0;
}
/*
- * Library validation functions
+ * Library validation functions
*/
int
cs_require_lv(struct proc *p)
{
-
- if (cs_library_val_enable)
+ if (cs_library_val_enable) {
return 1;
+ }
- if (p == NULL)
+ if (p == NULL) {
p = current_proc();
-
- if (p != NULL && (p->p_csflags & CS_REQUIRE_LV))
+ }
+
+ if (p != NULL && (p->p_csflags & CS_REQUIRE_LV)) {
+ return 1;
+ }
+
+ return 0;
+}
+
+int
+csproc_forced_lv(struct proc* p)
+{
+ if (p == NULL) {
+ p = current_proc();
+ }
+ if (p != NULL && (p->p_csflags & CS_FORCED_LV)) {
return 1;
-
+ }
return 0;
}
/*
* Function: csblob_get_base_offset
*
- * Description: This function returns the base offset into the Mach-O binary
+ * Description: This function returns the base offset into the (possibly universal) binary
* for a given blob.
-*/
+ */
off_t
csblob_get_base_offset(struct cs_blob *blob)
{
- return blob->csb_base_offset;
+ return blob->csb_base_offset;
}
/*
* Function: csblob_get_size
*
* Description: This function returns the size of a given blob.
-*/
+ */
vm_size_t
csblob_get_size(struct cs_blob *blob)
{
- return blob->csb_mem_size;
+ return blob->csb_mem_size;
}
/*
* Function: csblob_get_addr
*
* Description: This function returns the address of a given blob.
-*/
+ */
vm_address_t
csblob_get_addr(struct cs_blob *blob)
{
- return blob->csb_mem_kaddr;
+ return blob->csb_mem_kaddr;
}
/*
*
* Description: This function returns true if the binary is
* in the trust cache.
-*/
+ */
int
csblob_get_platform_binary(struct cs_blob *blob)
{
- if (blob && blob->csb_platform_binary)
- return 1;
- return 0;
+ if (blob && blob->csb_platform_binary) {
+ return 1;
+ }
+ return 0;
}
/*
* Function: csblob_get_flags
*
* Description: This function returns the flags for a given blob
-*/
+ */
unsigned int
csblob_get_flags(struct cs_blob *blob)
{
- return blob->csb_flags;
+ return blob->csb_flags;
}
/*
* Function: csblob_get_hashtype
*
* Description: This function returns the hash type for a given blob
-*/
+ */
uint8_t
csblob_get_hashtype(struct cs_blob const * const blob)
{
- return blob->csb_hashtype != NULL ? cs_hash_type(blob->csb_hashtype) : 0;
+ return blob->csb_hashtype != NULL ? cs_hash_type(blob->csb_hashtype) : 0;
}
/*
struct cs_blob *
csproc_get_blob(struct proc *p)
{
- if (NULL == p)
+ if (NULL == p) {
+ return NULL;
+ }
+
+ if (NULL == p->p_textvp) {
return NULL;
+ }
- if (NULL == p->p_textvp)
+ if ((p->p_csflags & CS_SIGNED) == 0) {
return NULL;
+ }
return ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff);
}
/*
- * Function: csproc_get_blob
+ * Function: csvnode_get_blob
*
* Description: This function returns the cs_blob
* for the vnode vp
*
* Description: This function returns a pointer to the
* team id of csblob
-*/
+ */
const char *
csblob_get_teamid(struct cs_blob *csblob)
{
const CS_CodeDirectory *cd;
cd = (const CS_CodeDirectory *)csblob_find_blob(csblob, CSSLOT_CODEDIRECTORY, CSMAGIC_CODEDIRECTORY);
- if (cd == NULL)
+ if (cd == NULL) {
return NULL;
+ }
- if (cd->identOffset == 0)
+ if (cd->identOffset == 0) {
return NULL;
+ }
return ((const char *)cd) + ntohl(cd->identOffset);
}
void *
csblob_entitlements_dictionary_copy(struct cs_blob *csblob)
{
- if (!csblob->csb_entitlements) return NULL;
- osobject_retain(csblob->csb_entitlements);
- return csblob->csb_entitlements;
+ if (!csblob->csb_entitlements) {
+ return NULL;
+ }
+ osobject_retain(csblob->csb_entitlements);
+ return csblob->csb_entitlements;
}
void
csblob_entitlements_dictionary_set(struct cs_blob *csblob, void * entitlements)
{
- assert(csblob->csb_entitlements == NULL);
- if (entitlements) osobject_retain(entitlements);
- csblob->csb_entitlements = entitlements;
+ assert(csblob->csb_entitlements == NULL);
+ if (entitlements) {
+ osobject_retain(entitlements);
+ }
+ csblob->csb_entitlements = entitlements;
}
/*
- * Function: csproc_get_teamid
+ * Function: csproc_get_teamid
*
* Description: This function returns a pointer to the
* team id of the process p
-*/
+ */
const char *
csproc_get_teamid(struct proc *p)
{
struct cs_blob *csblob;
csblob = csproc_get_blob(p);
- if (csblob == NULL)
- return NULL;
+ if (csblob == NULL) {
+ return NULL;
+ }
return csblob_get_teamid(csblob);
}
/*
- * Function: csproc_get_signer_type
+ * Function: csproc_get_signer_type
*
* Description: This function returns the signer type
* of the process p
-*/
+ */
unsigned int
csproc_get_signer_type(struct proc *p)
{
struct cs_blob *csblob;
csblob = csproc_get_blob(p);
- if (csblob == NULL)
- return CS_SIGNER_TYPE_UNKNOWN;
+ if (csblob == NULL) {
+ return CS_SIGNER_TYPE_UNKNOWN;
+ }
return csblob_get_signer_type(csblob);
}
/*
- * Function: csvnode_get_teamid
+ * Function: csvnode_get_teamid
*
* Description: This function returns a pointer to the
* team id of the binary at the given offset in vnode vp
-*/
+ */
const char *
csvnode_get_teamid(struct vnode *vp, off_t offset)
{
struct cs_blob *csblob;
- if (vp == NULL)
+ if (vp == NULL) {
return NULL;
+ }
csblob = ubc_cs_blob_get(vp, -1, offset);
- if (csblob == NULL)
- return NULL;
+ if (csblob == NULL) {
+ return NULL;
+ }
return csblob_get_teamid(csblob);
}
csblob = csproc_get_blob(p);
/* If there is no csblob this returns 0 because
- it is true that it is not a platform binary */
+ * it is true that it is not a platform binary */
return (csblob == NULL) ? 0 : csblob->csb_platform_binary;
}
int
csproc_get_platform_path(struct proc *p)
{
- struct cs_blob *csblob = csproc_get_blob(p);
+ struct cs_blob *csblob;
+
+ csblob = csproc_get_blob(p);
return (csblob == NULL) ? 0 : csblob->csb_platform_path;
}
}
#endif
+void
+csproc_disable_enforcement(struct proc* __unused p)
+{
+#if !CONFIG_ENFORCE_SIGNED_CODE
+ if (p != NULL) {
+ proc_lock(p);
+ p->p_csflags &= (~CS_ENFORCEMENT);
+ proc_unlock(p);
+ }
+#endif
+}
+
+/* Function: csproc_mark_invalid_allowed
+ *
+ * Description: Mark the process as being allowed to go invalid. Called as part of
+ * task_for_pid and ptrace policy. Note CS_INVALID_ALLOWED only matters for
+ * processes that have been opted into CS_ENFORCEMENT.
+ */
+void
+csproc_mark_invalid_allowed(struct proc* __unused p)
+{
+#if !CONFIG_ENFORCE_SIGNED_CODE
+ if (p != NULL) {
+ proc_lock(p);
+ p->p_csflags |= CS_INVALID_ALLOWED;
+ proc_unlock(p);
+ }
+#endif
+}
+
+/*
+ * Function: csproc_check_invalid_allowed
+ *
+ * Description: Returns 1 if the process has been marked as allowed to go invalid
+ * because it gave its task port to an allowed process.
+ */
+int
+csproc_check_invalid_allowed(struct proc* __unused p)
+{
+#if !CONFIG_ENFORCE_SIGNED_CODE
+ if (p == NULL) {
+ p = current_proc();
+ }
+
+ if (p != NULL && (p->p_csflags & CS_INVALID_ALLOWED)) {
+ return 1;
+ }
+#endif
+ return 0;
+}
+
/*
* Function: csproc_get_prod_signed
*
int
csproc_get_prod_signed(struct proc *p)
{
- return ((p->p_csflags & CS_DEV_CODE) == 0);
+ return (p->p_csflags & CS_DEV_CODE) == 0;
}
/*
* Function: csfg_get_platform_binary
*
- * Description: This function returns the
- * platform binary field for the
- * fileglob fg
+ * Description: This function returns the
+ * platform binary field for the
+ * fileglob fg
*/
-int
+int
csfg_get_platform_binary(struct fileglob *fg)
{
int platform_binary = 0;
struct ubc_info *uip;
vnode_t vp;
- if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE)
+ if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE) {
return 0;
-
+ }
+
vp = (struct vnode *)fg->fg_data;
- if (vp == NULL)
+ if (vp == NULL) {
return 0;
+ }
vnode_lock(vp);
- if (!UBCINFOEXISTS(vp))
+ if (!UBCINFOEXISTS(vp)) {
goto out;
-
+ }
+
uip = vp->v_ubcinfo;
- if (uip == NULL)
+ if (uip == NULL) {
goto out;
-
- if (uip->cs_blobs == NULL)
+ }
+
+ if (uip->cs_blobs == NULL) {
goto out;
+ }
/* It is OK to extract the teamid from the first blob
- because all blobs of a vnode must have the same teamid */
+ * because all blobs of a vnode must have the same teamid */
platform_binary = uip->cs_blobs->csb_platform_binary;
out:
vnode_unlock(vp);
{
vnode_t vp;
- if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE)
+ if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE) {
return NULL;
+ }
vp = (struct vnode *)fg->fg_data;
- if (vp == NULL)
+ if (vp == NULL) {
return NULL;
+ }
struct cs_blob *csblob = NULL;
- if ((csblob = ubc_cs_blob_get(vp, -1, offset)) == NULL)
+ if ((csblob = ubc_cs_blob_get(vp, -1, offset)) == NULL) {
return NULL;
+ }
- if (cdhash_size)
+ if (cdhash_size) {
*cdhash_size = CS_CDHASH_LEN;
+ }
return csblob->csb_cdhash;
}
* Function: csfg_get_signer_type
*
* Description: This returns the signer type
- * for the fileglob fg
+ * for the fileglob fg
*/
unsigned int
csfg_get_signer_type(struct fileglob *fg)
unsigned int signer_type = CS_SIGNER_TYPE_UNKNOWN;
vnode_t vp;
- if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE)
+ if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE) {
return CS_SIGNER_TYPE_UNKNOWN;
-
+ }
+
vp = (struct vnode *)fg->fg_data;
- if (vp == NULL)
+ if (vp == NULL) {
return CS_SIGNER_TYPE_UNKNOWN;
+ }
vnode_lock(vp);
- if (!UBCINFOEXISTS(vp))
+ if (!UBCINFOEXISTS(vp)) {
goto out;
-
+ }
+
uip = vp->v_ubcinfo;
- if (uip == NULL)
+ if (uip == NULL) {
goto out;
-
- if (uip->cs_blobs == NULL)
+ }
+
+ if (uip->cs_blobs == NULL) {
goto out;
+ }
/* It is OK to extract the signer type from the first blob,
- because all blobs of a vnode must have the same signer type. */
+ * because all blobs of a vnode must have the same signer type. */
signer_type = uip->cs_blobs->csb_signer_type;
out:
vnode_unlock(vp);
* Function: csfg_get_teamid
*
* Description: This returns a pointer to
- * the teamid for the fileglob fg
+ * the teamid for the fileglob fg
*/
const char *
csfg_get_teamid(struct fileglob *fg)
const char *str = NULL;
vnode_t vp;
- if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE)
+ if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE) {
return NULL;
-
+ }
+
vp = (struct vnode *)fg->fg_data;
- if (vp == NULL)
+ if (vp == NULL) {
return NULL;
+ }
vnode_lock(vp);
- if (!UBCINFOEXISTS(vp))
+ if (!UBCINFOEXISTS(vp)) {
goto out;
-
+ }
+
uip = vp->v_ubcinfo;
- if (uip == NULL)
+ if (uip == NULL) {
goto out;
-
- if (uip->cs_blobs == NULL)
+ }
+
+ if (uip->cs_blobs == NULL) {
goto out;
+ }
/* It is OK to extract the teamid from the first blob
- because all blobs of a vnode must have the same teamid */
+ * because all blobs of a vnode must have the same teamid */
str = uip->cs_blobs->csb_teamid;
out:
vnode_unlock(vp);
vnode_t vp;
int prod_signed = 0;
- if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE)
+ if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE) {
return 0;
-
+ }
+
vp = (struct vnode *)fg->fg_data;
- if (vp == NULL)
+ if (vp == NULL) {
return 0;
+ }
vnode_lock(vp);
- if (!UBCINFOEXISTS(vp))
+ if (!UBCINFOEXISTS(vp)) {
goto out;
-
+ }
+
uip = vp->v_ubcinfo;
- if (uip == NULL)
+ if (uip == NULL) {
goto out;
-
- if (uip->cs_blobs == NULL)
+ }
+
+ if (uip->cs_blobs == NULL) {
goto out;
+ }
/* It is OK to extract the flag from the first blob
- because all blobs of a vnode must have the same cs_flags */
+ * because all blobs of a vnode must have the same cs_flags */
prod_signed = (uip->cs_blobs->csb_flags & CS_DEV_CODE) == 0;
out:
vnode_unlock(vp);
return prod_signed;
}
+/*
+ * Function: csfg_get_identity
+ *
+ * Description: This function returns the codesign identity
+ * for the fileglob
+ */
+const char *
+csfg_get_identity(struct fileglob *fg, off_t offset)
+{
+ vnode_t vp;
+ struct cs_blob *csblob = NULL;
+
+ if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE) {
+ return NULL;
+ }
+
+ vp = (struct vnode *)fg->fg_data;
+ if (vp == NULL) {
+ return NULL;
+ }
+
+ csblob = ubc_cs_blob_get(vp, -1, offset);
+ if (csblob == NULL) {
+ return NULL;
+ }
+
+ return csblob_get_identity(csblob);
+}
+
+/*
+ * Function: csfg_get_platform_identifier
+ *
+ * Description: This function returns the codesign platform
+ * identifier for the fileglob. Assumes the fileproc
+ * is being held busy to keep the fileglob consistent.
+ */
+uint8_t
+csfg_get_platform_identifier(struct fileglob *fg, off_t offset)
+{
+ vnode_t vp;
+
+ if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE) {
+ return 0;
+ }
+
+ vp = (struct vnode *)fg->fg_data;
+ if (vp == NULL) {
+ return 0;
+ }
+
+ return csvnode_get_platform_identifier(vp, offset);
+}
+
+/*
+ * Function: csvnode_get_platform_identifier
+ *
+ * Description: This function returns the codesign platform
+ * identifier for the vnode. Assumes a vnode reference
+ * is held.
+ */
+uint8_t
+csvnode_get_platform_identifier(struct vnode *vp, off_t offset)
+{
+ struct cs_blob *csblob;
+ const CS_CodeDirectory *code_dir;
+
+ csblob = ubc_cs_blob_get(vp, -1, offset);
+ if (csblob == NULL) {
+ return 0;
+ }
+
+ code_dir = csblob->csb_cd;
+ if (code_dir == NULL || ntohl(code_dir->length) < 8) {
+ return 0;
+ }
+
+ return code_dir->platform;
+}
+
+/*
+ * Function: csproc_get_platform_identifier
+ *
+ * Description: This function returns the codesign platform
+ * identifier for the proc. Assumes proc will remain
+ * valid through call.
+ */
+uint8_t
+csproc_get_platform_identifier(struct proc *p)
+{
+ if (NULL == p->p_textvp) {
+ return 0;
+ }
+
+ return csvnode_get_platform_identifier(p->p_textvp, p->p_textoff);
+}
uint32_t
cs_entitlement_flags(struct proc *p)
{
- return (p->p_csflags & CS_ENTITLEMENT_FLAGS);
+ return p->p_csflags & CS_ENTITLEMENT_FLAGS;
}
int
return (p->p_csflags & CS_RESTRICT) ? 1 : 0;
}
+int
+csproc_hardened_runtime(struct proc* p)
+{
+ return (p->p_csflags & CS_RUNTIME) ? 1 : 0;
+}
+
/*
* Function: csfg_get_path
*
{
vnode_t vp = NULL;
- if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE)
+ if (FILEGLOB_DTYPE(fg) != DTYPE_VNODE) {
return -1;
-
+ }
+
vp = (struct vnode *)fg->fg_data;
/* vn_getpath returns 0 for success,
- or an error code */
+ * or an error code */
return vn_getpath(vp, path, len);
}
*out_start = NULL;
*out_length = 0;
- if (NULL == p->p_textvp)
+ if ((p->p_csflags & CS_SIGNED) == 0) {
+ return 0;
+ }
+
+ if (NULL == p->p_textvp) {
return EINVAL;
+ }
- if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL)
+ if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL) {
return 0;
+ }
return csblob_get_entitlements(csblob, out_start, out_length);
}
+
+/* Retrieve the cached entitlements for a process
+ * Returns:
+ * EINVAL no text vnode associated with the process
+ * EBADEXEC invalid code signing data
+ * 0 no error occurred
+ *
+ * Note: the entitlements may be NULL if there is nothing cached.
+ */
+
+int
+cs_entitlements_dictionary_copy(proc_t p, void **entitlements)
+{
+ struct cs_blob *csblob;
+
+ *entitlements = NULL;
+
+ if ((p->p_csflags & CS_SIGNED) == 0) {
+ return 0;
+ }
+
+ if (NULL == p->p_textvp) {
+ return EINVAL;
+ }
+
+ if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL) {
+ return 0;
+ }
+
+ *entitlements = csblob_entitlements_dictionary_copy(csblob);
+ return 0;
+}
+
/* Retrieve the codesign identity for a process.
* Returns:
* NULL an error occured
{
struct cs_blob *csblob;
- if (NULL == p->p_textvp)
+ if ((p->p_csflags & CS_SIGNED) == 0) {
+ return NULL;
+ }
+
+ if (NULL == p->p_textvp) {
return NULL;
+ }
- if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL)
+ if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL) {
return NULL;
+ }
return csblob_get_identity(csblob);
}
-
-/* Retrieve the codesign blob for a process.
- * Returns:
- * EINVAL no text vnode associated with the process
- * 0 no error occurred
+/*
+ * DO NOT USE THIS FUNCTION!
+ * Use the properly guarded csproc_get_blob instead.
*
- * On success, out_start and out_length will point to the
- * cms blob if found; or will be set to NULL/zero
- * if there were no blob.
+ * This is currently here to allow detached signatures to work
+ * properly. The only user of this function is also checking
+ * for CS_VALID.
*/
int
*out_start = NULL;
*out_length = 0;
- if (NULL == p->p_textvp)
+ if (NULL == p->p_textvp) {
return EINVAL;
+ }
- if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL)
+ if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL) {
return 0;
+ }
*out_start = (void *)csblob->csb_mem_kaddr;
*out_length = csblob->csb_mem_size;
{
struct cs_blob *csblob;
- if (NULL == p->p_textvp)
+ if ((p->p_csflags & CS_SIGNED) == 0) {
+ return NULL;
+ }
+
+ if (NULL == p->p_textvp) {
return NULL;
+ }
- if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL)
+ if ((csblob = ubc_cs_blob_get(p->p_textvp, -1, p->p_textoff)) == NULL) {
return NULL;
+ }
return csblob->csb_cdhash;
}
projects / apple / xnu.git / blobdiff