Implement all of sm.

stratosphere/sm/source/sm_manager_service.cpp

@@ -1,5 +1,6 @@
 #include <switch.h>
 #include "sm_manager_service.hpp"
+#include "sm_registration.hpp"
 
 Result ManagerService::dispatch(IpcParsedCommand &r, IpcCommand &out_c, u64 cmd_id, u8 *pointer_buffer, size_t pointer_buffer_size) {
     Result rc = 0xF601;
@@ -19,11 +20,9 @@ Result ManagerService::dispatch(IpcParsedCommand &r, IpcCommand &out_c, u64 cmd_
 
 
 std::tuple<Result> ManagerService::register_process(u64 pid, InBuffer<u8> acid_sac, InBuffer<u8> aci0_sac) {
-    /* TODO */
+    return std::make_tuple(Registration::RegisterProcess(pid, acid_sac.buffer, acid_sac.num_elements, aci0_sac.buffer, aci0_sac.num_elements));
-    return std::make_tuple(0xF601);
 }
 
 std::tuple<Result> ManagerService::unregister_process(u64 pid) {
-    /* TODO */
+    return std::make_tuple(Registration::UnregisterProcess(pid));
-    return std::make_tuple(0xF601);
 }

stratosphere/sm/source/sm_registration.cpp

@@ -0,0 +1,262 @@
+#include <switch.h>
+#include <algorithm>
+#include "sm_registration.hpp"
+
+static Registration::Process g_process_list[REGISTRATION_LIST_MAX_PROCESS] = {0};
+static Registration::Service g_service_list[REGISTRATION_LIST_MAX_SERVICE] = {0};
+
+/* Utilities. */
+Registration::Process *Registration::GetProcessForPid(u64 pid) {
+    for (unsigned int i = 0; i < REGISTRATION_LIST_MAX_PROCESS; i++) {
+        if (g_process_list[i].pid == pid) {
+            return &g_process_list[i];
+        }
+    }
+    return NULL;
+}
+
+Registration::Process *Registration::GetFreeProcess() {
+    return GetProcessForPid(0);
+}
+
+Registration::Service *Registration::GetService(u64 service) {
+    for (unsigned int i = 0; i < REGISTRATION_LIST_MAX_SERVICE; i++) {
+        if (g_service_list[i].service_name == service) {
+            return &g_service_list[i];
+        }
+    }
+    return NULL;
+}
+
+Registration::Service *Registration::GetFreeService() {
+    return GetService(0);
+}
+
+bool Registration::IsValidForSac(u8 *sac, size_t sac_size, u64 service, bool is_host) {
+    u8 cur_ctrl;
+    u64 cur_service;
+    bool cur_is_host;
+    size_t remaining = sac_size;
+    while (remaining) {
+        cur_ctrl = *sac++;
+        remaining--;
+        size_t cur_size = (cur_ctrl & 7) + 1;
+        if (cur_size > remaining) {
+            break;
+        }
+        cur_is_host = (cur_ctrl & 0x80) != 0;
+        cur_service = 0;
+        for (unsigned int i = 0; i < cur_size; i++) {
+            cur_service |= ((u64)sac[i]) << (8 * i);
+        }
+        /* Check if the last byte is a wildcard ('*') */
+        if (sac[cur_size - 1] == '*') {
+            /* Mask cur_service, service with 0xFF.. up until the wildcard. */
+            cur_service &= U64_MAX >> (8 * (8 - cur_size - 1));
+            service &= U64_MAX >> (8 * (8 - cur_size - 1));
+        }
+        if (cur_service == service && (!is_host || cur_is_host)) {
+            return true;
+        }
+        sac += cur_size;
+        remaining -= cur_size;
+    }
+    return false;
+}
+
+
+bool Registration::ValidateSacAgainstRestriction(u8 *r_sac, size_t r_sac_size, u8 *sac, size_t sac_size) {
+    u8 cur_ctrl;
+    u64 cur_service;
+    bool cur_is_host;
+    size_t remaining = sac_size;
+    while (remaining) {
+        cur_ctrl = *sac++;
+        remaining--;
+        size_t cur_size = (cur_ctrl & 7) + 1;
+        if (cur_size > remaining) {
+            break;
+        }
+        cur_is_host = (cur_ctrl & 0x80) != 0;
+        cur_service = 0;
+        for (unsigned int i = 0; i < cur_size; i++) {
+            cur_service |= ((u64)sac[i]) << (8 * i);
+        }
+        if (!IsValidForSac(r_sac, r_sac_size, cur_service, cur_is_host)) {
+            return false;
+        }
+        sac += cur_size;
+        remaining -= cur_size;
+    }
+    return true;
+}
+
+/* Process management. */
+Result Registration::RegisterProcess(u64 pid, u8 *acid_sac, size_t acid_sac_size, u8 *aci0_sac, size_t aci0_sac_size) {
+    Registration::Process *proc = GetFreeProcess();
+    if (aci0_sac_size > REGISTRATION_MAX_SAC_SIZE) {
+        return 0x1215;
+    }
+    
+    if (proc == NULL) {
+        return 0x215;
+    }
+    
+    if (aci0_sac_size && !ValidateSacAgainstRestriction(acid_sac, acid_sac_size, aci0_sac, aci0_sac_size)) {
+        return 0x1015;
+    }
+    
+    proc->pid = pid;
+    proc->sac_size = aci0_sac_size;
+    std::copy(aci0_sac, aci0_sac + aci0_sac_size, proc->sac);
+    return 0;
+}
+
+Result Registration::UnregisterProcess(u64 pid) {
+    Registration::Process *proc = GetProcessForPid(pid);
+    if (proc == NULL) {
+        return 0x415;
+    }
+    
+    proc->pid = 0;
+    return 0;
+}
+
+/* Service management. */
+bool Registration::HasService(u64 service) {
+    for (unsigned int i = 0; i < REGISTRATION_LIST_MAX_SERVICE; i++) {
+        if (g_service_list[i].service_name == service) {
+            return true;
+        }
+    }
+    return false;
+}
+
+Result Registration::GetServiceForPid(u64 pid, u64 service, Handle *out) {
+    if (!service) {
+        return 0xC15;
+    }
+    
+    u64 service_name_len = 0;
+    while ((service >> (8 * service_name_len)) & 0xFF) {
+        service_name_len++;
+    }
+    
+    /* If the service has bytes after a null terminator, that's no good. */
+    if ((service >> (8 * service_name_len))) {
+        return 0xC15;
+    }
+    
+    if (pid >= REGISTRATION_PID_BUILTIN_MAX) {
+        Registration::Process *proc = GetProcessForPid(pid);
+        if (proc == NULL) {
+            return 0x415;
+        }
+        
+        if (!IsValidForSac(proc->sac, proc->sac_size, service, false)) {
+            return 0x1015;
+        }
+    }
+    
+    Registration::Service *target_service = GetService(service);
+    if (target_service == NULL) {
+        /* TODO: This defers the request, somehow? Needs to be RE'd in more detail. */
+        return 0x6580A;
+    }
+    
+    *out = 0;
+    Result rc = svcConnectToPort(out, target_service->port_h);
+    if (R_FAILED(rc)) {
+        if ((rc & 0x3FFFFF) == 0xE01) {
+            return 0x615;
+        }
+    }
+    return rc;
+}
+
+Result Registration::RegisterServiceForPid(u64 pid, u64 service, u64 max_sessions, bool is_light, Handle *out) {
+    if (!service) {
+        return 0xC15;
+    }
+    
+    u64 service_name_len = 0;
+    while ((service >> (8 * service_name_len)) & 0xFF) {
+        service_name_len++;
+    }
+    
+    /* If the service has bytes after a null terminator, that's no good. */
+    if ((service >> (8 * service_name_len))) {
+        return 0xC15;
+    }
+    
+    if (pid >= REGISTRATION_PID_BUILTIN_MAX) {
+        Registration::Process *proc = GetProcessForPid(pid);
+        if (proc == NULL) {
+            return 0x415;
+        }
+        
+        if (!IsValidForSac(proc->sac, proc->sac_size, service, true)) {
+            return 0x1015;
+        }
+    }
+    
+    if (HasService(service)) {
+        return 0x815;
+    }
+    
+    Registration::Service *free_service = GetFreeService();
+    if (free_service == NULL) {
+        return 0xA15;
+    }
+    
+    *out = 0;
+    *free_service = (const Registration::Service){0};
+    Result rc = svcCreatePort(out, &free_service->port_h, max_sessions, is_light, (char *)&free_service->service_name);
+    
+    if (R_SUCCEEDED(rc)) {
+        free_service->service_name = service;
+        free_service->owner_pid = pid;
+    }
+    
+    return rc;
+}
+
+Result Registration::UnregisterServiceForPid(u64 pid, u64 service) {
+    if (!service) {
+        return 0xC15;
+    }
+    
+    u64 service_name_len = 0;
+    while ((service >> (8 * service_name_len)) & 0xFF) {
+        service_name_len++;
+    }
+    
+    /* If the service has bytes after a null terminator, that's no good. */
+    if ((service >> (8 * service_name_len))) {
+        return 0xC15;
+    }
+    
+    if (pid >= REGISTRATION_PID_BUILTIN_MAX) {
+        Registration::Process *proc = GetProcessForPid(pid);
+        if (proc == NULL) {
+            return 0x415;
+        }
+        
+        if (!IsValidForSac(proc->sac, proc->sac_size, service, true)) {
+            return 0x1015;
+        }
+    }
+    
+    Registration::Service *target_service = GetService(service);
+    if (target_service == NULL) {
+        return 0xE15;
+    }
+
+    if (target_service->owner_pid != pid) {
+        return 0x1015;
+    }
+    
+    svcCloseHandle(target_service->port_h);
+    *target_service = (const Registration::Service){0};
+    return 0;
+}

stratosphere/sm/source/sm_registration.hpp

@@ -0,0 +1,40 @@
+#pragma once
+#include <switch.h>
+
+#define REGISTRATION_LIST_MAX_PROCESS (0x40)
+#define REGISTRATION_LIST_MAX_SERVICE (0x100)
+#define REGISTRATION_MAX_SAC_SIZE (0x200)
+#define REGISTRATION_PID_BUILTIN_MAX 0x7
+
+class Registration {
+    public:
+        struct Process {
+            u64 pid;
+            u64 sac_size;
+            u8 sac[REGISTRATION_MAX_SAC_SIZE];
+        };
+        
+        struct Service {
+            u64 service_name;
+            u64 owner_pid;
+            Handle port_h;
+        };
+        
+        /* Utilities. */
+        static Registration::Process *GetProcessForPid(u64 pid);
+        static Registration::Process *GetFreeProcess();
+        static Registration::Service *GetService(u64 service);
+        static Registration::Service *GetFreeService();
+        static bool IsValidForSac(u8 *sac, size_t sac_size, u64 service, bool is_host);
+        static bool ValidateSacAgainstRestriction(u8 *r_sac, size_t r_sac_size, u8 *sac, size_t sac_size);
+        
+        /* Process management. */
+        static Result RegisterProcess(u64 pid, u8 *acid_sac, size_t acid_sac_size, u8 *aci0_sac, size_t aci0_sac_size);
+        static Result UnregisterProcess(u64 pid);
+        
+        /* Service management. */
+        static bool HasService(u64 service);
+        static Result GetServiceForPid(u64 pid, u64 service, Handle *out);
+        static Result RegisterServiceForPid(u64 pid, u64 service, u64 max_sessions, bool is_light, Handle *out);
+        static Result UnregisterServiceForPid(u64 pid, u64 service);
+};

stratosphere/sm/source/sm_user_service.cpp

@@ -1,5 +1,6 @@
 #include <switch.h>
 #include "sm_user_service.hpp"
+#include "sm_registration.hpp"
 
 Result UserService::dispatch(IpcParsedCommand &r, IpcCommand &out_c, u64 cmd_id, u8 *pointer_buffer, size_t pointer_buffer_size) {
     Result rc = 0xF601;
@@ -30,16 +31,17 @@ std::tuple<Result> UserService::initialize(PidDescriptor pid) {
 }
 
 std::tuple<Result, MovedHandle> UserService::get_service(u64 service) {
-    /* TODO */
+    Handle session_h = 0;
-    return std::make_tuple(0xF601, MovedHandle{0});
+    Result rc = Registration::GetServiceForPid(this->pid, service, &session_h);
+    return std::make_tuple(rc, MovedHandle{session_h});
 }
 
 std::tuple<Result, MovedHandle> UserService::register_service(u64 service, u8 is_light, u32 max_sessions) {
-    /* TODO */
+    Handle service_h = 0;
-    return std::make_tuple(0xF601, MovedHandle{0});
+    Result rc = Registration::RegisterServiceForPid(this->pid, service, max_sessions, is_light != 0, &service_h);
+    return std::make_tuple(rc, MovedHandle{service_h});
 }
 
 std::tuple<Result> UserService::unregister_service(u64 service) {
-    /* TODO */
+    return std::make_tuple(Registration::UnregisterServiceForPid(this->pid, service));
-    return std::make_tuple(0xF601);
 }