mirror of
https://github.com/PowerShell/Win32-OpenSSH.git
synced 2025-07-24 22:45:17 +02:00
Fix for a missing NULL assignment in ssh-agent. Found through appVerifier
This commit is contained in:
Manoj Ampalam
parent
f5226a3b70
commit
8efe020478
@ -194,7 +194,7 @@ agent_listen_loop() {
|
||||
verbose("Failed to create child process %ls ERROR:%d", module_path, GetLastError());
|
||||
}
|
||||
else {
|
||||
debug("spawned child %d ", pi.dwProcessId);
|
||||
debug("spawned worker %d for agent client pid %d ", pi.dwProcessId, client_pid);
|
||||
CloseHandle(pi.hProcess);
|
||||
CloseHandle(pi.hThread);
|
||||
}
|
||||
|
||||
@ -42,178 +42,178 @@
|
||||
static void
|
||||
InitLsaString(LSA_STRING *lsa_string, const char *str)
|
||||
{
|
||||
if (str == NULL)
|
||||
memset(lsa_string, 0, sizeof(LSA_STRING));
|
||||
else {
|
||||
lsa_string->Buffer = (char *)str;
|
||||
lsa_string->Length = strlen(str);
|
||||
lsa_string->MaximumLength = lsa_string->Length + 1;
|
||||
}
|
||||
if (str == NULL)
|
||||
memset(lsa_string, 0, sizeof(LSA_STRING));
|
||||
else {
|
||||
lsa_string->Buffer = (char *)str;
|
||||
lsa_string->Length = strlen(str);
|
||||
lsa_string->MaximumLength = lsa_string->Length + 1;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
EnablePrivilege(const char *privName, int enabled)
|
||||
{
|
||||
TOKEN_PRIVILEGES tp;
|
||||
HANDLE hProcToken = NULL;
|
||||
LUID luid;
|
||||
TOKEN_PRIVILEGES tp;
|
||||
HANDLE hProcToken = NULL;
|
||||
LUID luid;
|
||||
|
||||
int exitCode = 1;
|
||||
int exitCode = 1;
|
||||
|
||||
if (LookupPrivilegeValueA(NULL, privName, &luid) == FALSE ||
|
||||
OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hProcToken) == FALSE)
|
||||
goto done;
|
||||
if (LookupPrivilegeValueA(NULL, privName, &luid) == FALSE ||
|
||||
OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hProcToken) == FALSE)
|
||||
goto done;
|
||||
|
||||
tp.PrivilegeCount = 1;
|
||||
tp.Privileges[0].Luid = luid;
|
||||
tp.Privileges[0].Attributes = enabled ? SE_PRIVILEGE_ENABLED : 0;
|
||||
tp.PrivilegeCount = 1;
|
||||
tp.Privileges[0].Luid = luid;
|
||||
tp.Privileges[0].Attributes = enabled ? SE_PRIVILEGE_ENABLED : 0;
|
||||
|
||||
AdjustTokenPrivileges(hProcToken, FALSE, &tp, sizeof(TOKEN_PRIVILEGES), NULL, NULL);
|
||||
AdjustTokenPrivileges(hProcToken, FALSE, &tp, sizeof(TOKEN_PRIVILEGES), NULL, NULL);
|
||||
|
||||
done:
|
||||
if (hProcToken)
|
||||
CloseHandle(hProcToken);
|
||||
|
||||
return;
|
||||
if (hProcToken)
|
||||
CloseHandle(hProcToken);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
LoadProfile(struct agent_connection* con, wchar_t* user, wchar_t* domain) {
|
||||
PROFILEINFOW profileInfo;
|
||||
profileInfo.dwFlags = PI_NOUI;
|
||||
profileInfo.lpProfilePath = NULL;
|
||||
profileInfo.lpUserName = user;
|
||||
profileInfo.lpDefaultPath = NULL;
|
||||
profileInfo.lpServerName = domain;
|
||||
profileInfo.lpPolicyPath = NULL;
|
||||
profileInfo.hProfile = NULL;
|
||||
profileInfo.dwSize = sizeof(profileInfo);
|
||||
EnablePrivilege("SeBackupPrivilege", 1);
|
||||
EnablePrivilege("SeRestorePrivilege", 1);
|
||||
PROFILEINFOW profileInfo;
|
||||
profileInfo.dwFlags = PI_NOUI;
|
||||
profileInfo.lpProfilePath = NULL;
|
||||
profileInfo.lpUserName = user;
|
||||
profileInfo.lpDefaultPath = NULL;
|
||||
profileInfo.lpServerName = domain;
|
||||
profileInfo.lpPolicyPath = NULL;
|
||||
profileInfo.hProfile = NULL;
|
||||
profileInfo.dwSize = sizeof(profileInfo);
|
||||
EnablePrivilege("SeBackupPrivilege", 1);
|
||||
EnablePrivilege("SeRestorePrivilege", 1);
|
||||
if (LoadUserProfileW(con->auth_token, &profileInfo) == FALSE)
|
||||
debug("Loading user (%ls,%ls) profile failed ERROR: %d", user, domain, GetLastError());
|
||||
else
|
||||
con->hProfile = profileInfo.hProfile;
|
||||
EnablePrivilege("SeBackupPrivilege", 0);
|
||||
EnablePrivilege("SeRestorePrivilege", 0);
|
||||
EnablePrivilege("SeBackupPrivilege", 0);
|
||||
EnablePrivilege("SeRestorePrivilege", 0);
|
||||
}
|
||||
|
||||
#define MAX_USER_LEN 256
|
||||
static HANDLE
|
||||
generate_user_token(wchar_t* user) {
|
||||
HANDLE lsa_handle = 0, token = 0;
|
||||
LSA_OPERATIONAL_MODE mode;
|
||||
ULONG auth_package_id;
|
||||
NTSTATUS ret, subStatus;
|
||||
void * logon_info = NULL;
|
||||
size_t logon_info_size;
|
||||
LSA_STRING logon_process_name, auth_package_name, originName;
|
||||
TOKEN_SOURCE sourceContext;
|
||||
PKERB_INTERACTIVE_PROFILE pProfile = NULL;
|
||||
LUID logonId;
|
||||
QUOTA_LIMITS quotas;
|
||||
DWORD cbProfile;
|
||||
BOOL domain_user;
|
||||
wchar_t user_copy[MAX_USER_LEN];
|
||||
|
||||
/* prep user name - TODO: implment an accurate check if user is domain account*/
|
||||
if (wcsnlen(user, MAX_USER_LEN) == MAX_USER_LEN) {
|
||||
debug("user length is not supported");
|
||||
goto done;
|
||||
}
|
||||
HANDLE lsa_handle = 0, token = 0;
|
||||
LSA_OPERATIONAL_MODE mode;
|
||||
ULONG auth_package_id;
|
||||
NTSTATUS ret, subStatus;
|
||||
void * logon_info = NULL;
|
||||
size_t logon_info_size;
|
||||
LSA_STRING logon_process_name, auth_package_name, originName;
|
||||
TOKEN_SOURCE sourceContext;
|
||||
PKERB_INTERACTIVE_PROFILE pProfile = NULL;
|
||||
LUID logonId;
|
||||
QUOTA_LIMITS quotas;
|
||||
DWORD cbProfile;
|
||||
BOOL domain_user;
|
||||
wchar_t user_copy[MAX_USER_LEN];
|
||||
|
||||
/* prep user name - TODO: implment an accurate check if user is domain account*/
|
||||
if (wcsnlen(user, MAX_USER_LEN) == MAX_USER_LEN) {
|
||||
debug("user length is not supported");
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (wcschr(user, L'\\') != NULL) {
|
||||
wchar_t *un = NULL, *dn = NULL;
|
||||
DWORD un_len = 0, dn_len = 0;
|
||||
dn = user;
|
||||
dn_len = wcschr(user, L'\\') - user;
|
||||
un = wcschr(user, L'\\') + 1;
|
||||
un_len = wcsnlen(user, MAX_USER_LEN) - dn_len - 1;
|
||||
if (dn_len == 0 || un_len == 0) {
|
||||
debug("cannot get user token - bad user name");
|
||||
goto done;
|
||||
}
|
||||
memcpy(user_copy, un, un_len * sizeof(wchar_t));
|
||||
user_copy[un_len] = L'@';
|
||||
memcpy(user_copy + un_len + 1, dn, dn_len * sizeof(wchar_t));
|
||||
user_copy[dn_len + 1 + un_len] = L'\0';
|
||||
user = user_copy;
|
||||
}
|
||||
|
||||
domain_user = (wcschr(user, L'@') != NULL) ? TRUE : FALSE;
|
||||
if (wcschr(user, L'\\') != NULL) {
|
||||
wchar_t *un = NULL, *dn = NULL;
|
||||
DWORD un_len = 0, dn_len = 0;
|
||||
dn = user;
|
||||
dn_len = wcschr(user, L'\\') - user;
|
||||
un = wcschr(user, L'\\') + 1;
|
||||
un_len = wcsnlen(user, MAX_USER_LEN) - dn_len - 1;
|
||||
if (dn_len == 0 || un_len == 0) {
|
||||
debug("cannot get user token - bad user name");
|
||||
goto done;
|
||||
}
|
||||
memcpy(user_copy, un, un_len * sizeof(wchar_t));
|
||||
user_copy[un_len] = L'@';
|
||||
memcpy(user_copy + un_len + 1, dn, dn_len * sizeof(wchar_t));
|
||||
user_copy[dn_len + 1 + un_len] = L'\0';
|
||||
user = user_copy;
|
||||
}
|
||||
|
||||
domain_user = (wcschr(user, L'@') != NULL) ? TRUE : FALSE;
|
||||
|
||||
InitLsaString(&logon_process_name, "ssh-agent");
|
||||
if (domain_user)
|
||||
InitLsaString(&auth_package_name, MICROSOFT_KERBEROS_NAME_A);
|
||||
else
|
||||
InitLsaString(&auth_package_name, "SSH-LSA");
|
||||
InitLsaString(&logon_process_name, "ssh-agent");
|
||||
if (domain_user)
|
||||
InitLsaString(&auth_package_name, MICROSOFT_KERBEROS_NAME_A);
|
||||
else
|
||||
InitLsaString(&auth_package_name, "SSH-LSA");
|
||||
|
||||
InitLsaString(&originName, "sshd");
|
||||
if (ret = LsaRegisterLogonProcess(&logon_process_name, &lsa_handle, &mode) != STATUS_SUCCESS)
|
||||
goto done;
|
||||
InitLsaString(&originName, "sshd");
|
||||
if (ret = LsaRegisterLogonProcess(&logon_process_name, &lsa_handle, &mode) != STATUS_SUCCESS)
|
||||
goto done;
|
||||
|
||||
if (ret = LsaLookupAuthenticationPackage(lsa_handle, &auth_package_name, &auth_package_id) != STATUS_SUCCESS)
|
||||
goto done;
|
||||
if (ret = LsaLookupAuthenticationPackage(lsa_handle, &auth_package_name, &auth_package_id) != STATUS_SUCCESS)
|
||||
goto done;
|
||||
|
||||
if (domain_user) {
|
||||
KERB_S4U_LOGON *s4u_logon;
|
||||
logon_info_size = sizeof(KERB_S4U_LOGON);
|
||||
logon_info_size += (wcslen(user) * 2 + 2);
|
||||
logon_info = malloc(logon_info_size);
|
||||
if (logon_info == NULL)
|
||||
goto done;
|
||||
s4u_logon = (KERB_S4U_LOGON*)logon_info;
|
||||
s4u_logon->MessageType = KerbS4ULogon;
|
||||
s4u_logon->Flags = 0;
|
||||
s4u_logon->ClientUpn.Length = wcslen(user) * 2;
|
||||
s4u_logon->ClientUpn.MaximumLength = s4u_logon->ClientUpn.Length;
|
||||
s4u_logon->ClientUpn.Buffer = (WCHAR*)(s4u_logon + 1);
|
||||
memcpy(s4u_logon->ClientUpn.Buffer, user, s4u_logon->ClientUpn.Length + 2);
|
||||
s4u_logon->ClientRealm.Length = 0;
|
||||
s4u_logon->ClientRealm.MaximumLength = 0;
|
||||
s4u_logon->ClientRealm.Buffer = 0;
|
||||
}
|
||||
else {
|
||||
logon_info_size = (wcslen(user) + 1)*sizeof(wchar_t);
|
||||
logon_info = malloc(logon_info_size);
|
||||
if (logon_info == NULL)
|
||||
goto done;
|
||||
memcpy(logon_info, user, logon_info_size);
|
||||
}
|
||||
if (domain_user) {
|
||||
KERB_S4U_LOGON *s4u_logon;
|
||||
logon_info_size = sizeof(KERB_S4U_LOGON);
|
||||
logon_info_size += (wcslen(user) * 2 + 2);
|
||||
logon_info = malloc(logon_info_size);
|
||||
if (logon_info == NULL)
|
||||
goto done;
|
||||
s4u_logon = (KERB_S4U_LOGON*)logon_info;
|
||||
s4u_logon->MessageType = KerbS4ULogon;
|
||||
s4u_logon->Flags = 0;
|
||||
s4u_logon->ClientUpn.Length = wcslen(user) * 2;
|
||||
s4u_logon->ClientUpn.MaximumLength = s4u_logon->ClientUpn.Length;
|
||||
s4u_logon->ClientUpn.Buffer = (WCHAR*)(s4u_logon + 1);
|
||||
memcpy(s4u_logon->ClientUpn.Buffer, user, s4u_logon->ClientUpn.Length + 2);
|
||||
s4u_logon->ClientRealm.Length = 0;
|
||||
s4u_logon->ClientRealm.MaximumLength = 0;
|
||||
s4u_logon->ClientRealm.Buffer = 0;
|
||||
}
|
||||
else {
|
||||
logon_info_size = (wcslen(user) + 1)*sizeof(wchar_t);
|
||||
logon_info = malloc(logon_info_size);
|
||||
if (logon_info == NULL)
|
||||
goto done;
|
||||
memcpy(logon_info, user, logon_info_size);
|
||||
}
|
||||
|
||||
memcpy(sourceContext.SourceName,"sshagent", sizeof(sourceContext.SourceName));
|
||||
memcpy(sourceContext.SourceName,"sshagent", sizeof(sourceContext.SourceName));
|
||||
|
||||
if (AllocateLocallyUniqueId(&sourceContext.SourceIdentifier) != TRUE)
|
||||
goto done;
|
||||
if (AllocateLocallyUniqueId(&sourceContext.SourceIdentifier) != TRUE)
|
||||
goto done;
|
||||
|
||||
if (ret = LsaLogonUser(lsa_handle,
|
||||
&originName,
|
||||
Network,
|
||||
auth_package_id,
|
||||
logon_info,
|
||||
logon_info_size,
|
||||
NULL,
|
||||
&sourceContext,
|
||||
(PVOID*)&pProfile,
|
||||
&cbProfile,
|
||||
&logonId,
|
||||
&token,
|
||||
"as,
|
||||
&subStatus) != STATUS_SUCCESS) {
|
||||
debug("LsaLogonUser failed %d", ret);
|
||||
goto done;
|
||||
}
|
||||
if (ret = LsaLogonUser(lsa_handle,
|
||||
&originName,
|
||||
Network,
|
||||
auth_package_id,
|
||||
logon_info,
|
||||
logon_info_size,
|
||||
NULL,
|
||||
&sourceContext,
|
||||
(PVOID*)&pProfile,
|
||||
&cbProfile,
|
||||
&logonId,
|
||||
&token,
|
||||
"as,
|
||||
&subStatus) != STATUS_SUCCESS) {
|
||||
debug("LsaLogonUser failed %d", ret);
|
||||
goto done;
|
||||
}
|
||||
|
||||
done:
|
||||
if (lsa_handle)
|
||||
LsaDeregisterLogonProcess(lsa_handle);
|
||||
if (logon_info)
|
||||
free(logon_info);
|
||||
if (pProfile)
|
||||
LsaFreeReturnBuffer(pProfile);
|
||||
if (lsa_handle)
|
||||
LsaDeregisterLogonProcess(lsa_handle);
|
||||
if (logon_info)
|
||||
free(logon_info);
|
||||
if (pProfile)
|
||||
LsaFreeReturnBuffer(pProfile);
|
||||
|
||||
return token;
|
||||
return token;
|
||||
}
|
||||
|
||||
#define PUBKEY_AUTH_REQUEST "pubkey"
|
||||
@ -224,120 +224,121 @@ done:
|
||||
int process_passwordauth_request(struct sshbuf* request, struct sshbuf* response, struct agent_connection* con) {
|
||||
char *user = NULL, *pwd = NULL;
|
||||
wchar_t userW_buf[MAX_USER_NAME_LEN], pwdW_buf[MAX_PW_LEN];
|
||||
wchar_t *userW = userW_buf, *domW = NULL, *pwdW = pwdW_buf, *tmp;
|
||||
size_t user_len = 0, pwd_len = 0, dom_len = 0;
|
||||
int r = -1;
|
||||
HANDLE token = 0, dup_token, client_proc = 0;
|
||||
ULONG client_pid;
|
||||
wchar_t *userW = userW_buf, *domW = NULL, *pwdW = pwdW_buf, *tmp;
|
||||
size_t user_len = 0, pwd_len = 0, dom_len = 0;
|
||||
int r = -1;
|
||||
HANDLE token = 0, dup_token, client_proc = 0;
|
||||
ULONG client_pid;
|
||||
|
||||
if (sshbuf_get_cstring(request, &user, &user_len) != 0 ||
|
||||
sshbuf_get_cstring(request, &pwd, &pwd_len) != 0 ||
|
||||
user_len == 0 ||
|
||||
pwd_len == 0 ){
|
||||
debug("bad password auth request");
|
||||
goto done;
|
||||
}
|
||||
if (sshbuf_get_cstring(request, &user, &user_len) != 0 ||
|
||||
sshbuf_get_cstring(request, &pwd, &pwd_len) != 0 ||
|
||||
user_len == 0 ||
|
||||
pwd_len == 0 ){
|
||||
debug("bad password auth request");
|
||||
goto done;
|
||||
}
|
||||
|
||||
userW[0] = L'\0';
|
||||
userW[0] = L'\0';
|
||||
if (MultiByteToWideChar(CP_UTF8, 0, user, user_len + 1, userW, MAX_USER_NAME_LEN) == 0 ||
|
||||
MultiByteToWideChar(CP_UTF8, 0, pwd, pwd_len + 1, pwdW, MAX_PW_LEN) == 0) {
|
||||
MultiByteToWideChar(CP_UTF8, 0, pwd, pwd_len + 1, pwdW, MAX_PW_LEN) == 0) {
|
||||
debug("unable to convert user (%s) or password to UTF-16", user);
|
||||
goto done;
|
||||
}
|
||||
|
||||
|
||||
if ((tmp = wcschr(userW, L'\\')) != NULL) {
|
||||
domW = userW;
|
||||
userW = tmp + 1;
|
||||
*tmp = L'\0';
|
||||
domW = userW;
|
||||
userW = tmp + 1;
|
||||
*tmp = L'\0';
|
||||
|
||||
}
|
||||
else if ((tmp = wcschr(userW, L'@')) != NULL) {
|
||||
domW = tmp + 1;
|
||||
*tmp = L'\0';
|
||||
}
|
||||
}
|
||||
else if ((tmp = wcschr(userW, L'@')) != NULL) {
|
||||
domW = tmp + 1;
|
||||
*tmp = L'\0';
|
||||
}
|
||||
|
||||
if (LogonUserW(userW, domW, pwdW, LOGON32_LOGON_NETWORK, LOGON32_PROVIDER_DEFAULT, &token) == FALSE) {
|
||||
debug("failed to logon user");
|
||||
goto done;
|
||||
}
|
||||
|
||||
if ((FALSE == GetNamedPipeClientProcessId(con->connection, &client_pid)) ||
|
||||
((client_proc = OpenProcess(PROCESS_DUP_HANDLE, FALSE, client_pid)) == NULL) ||
|
||||
(FALSE == DuplicateHandle(GetCurrentProcess(), token, client_proc, &dup_token, TOKEN_QUERY | TOKEN_IMPERSONATE, FALSE, DUPLICATE_SAME_ACCESS)) ||
|
||||
(sshbuf_put_u32(response, dup_token) != 0)) {
|
||||
debug("failed to duplicate user token");
|
||||
goto done;
|
||||
}
|
||||
if ((FALSE == GetNamedPipeClientProcessId(con->connection, &client_pid)) ||
|
||||
((client_proc = OpenProcess(PROCESS_DUP_HANDLE, FALSE, client_pid)) == NULL) ||
|
||||
(FALSE == DuplicateHandle(GetCurrentProcess(), token, client_proc, &dup_token, TOKEN_QUERY | TOKEN_IMPERSONATE, FALSE, DUPLICATE_SAME_ACCESS)) ||
|
||||
(sshbuf_put_u32(response, dup_token) != 0)) {
|
||||
debug("failed to duplicate user token");
|
||||
goto done;
|
||||
}
|
||||
|
||||
con->auth_token = token;
|
||||
LoadProfile(con, userW, domW);
|
||||
r = 0;
|
||||
r = 0;
|
||||
done:
|
||||
/* TODO Fix this hacky protocol*/
|
||||
if ((r == -1) && (sshbuf_put_u8(response, SSH_AGENT_FAILURE) == 0))
|
||||
r = 0;
|
||||
|
||||
if (user)
|
||||
free(user);
|
||||
if (pwd)
|
||||
free(pwd);
|
||||
if (client_proc)
|
||||
CloseHandle(client_proc);
|
||||
/* TODO Fix this hacky protocol*/
|
||||
if ((r == -1) && (sshbuf_put_u8(response, SSH_AGENT_FAILURE) == 0))
|
||||
r = 0;
|
||||
|
||||
if (user)
|
||||
free(user);
|
||||
if (pwd)
|
||||
free(pwd);
|
||||
if (client_proc)
|
||||
CloseHandle(client_proc);
|
||||
|
||||
return r;
|
||||
return r;
|
||||
}
|
||||
|
||||
int process_pubkeyauth_request(struct sshbuf* request, struct sshbuf* response, struct agent_connection* con) {
|
||||
int r = -1;
|
||||
char *key_blob, *user, *sig, *blob;
|
||||
size_t key_blob_len, user_len, sig_len, blob_len;
|
||||
struct sshkey *key = NULL;
|
||||
HANDLE token = NULL, dup_token = NULL, client_proc = NULL;
|
||||
wchar_t wuser[MAX_USER_NAME_LEN];
|
||||
PWSTR wuser_home = NULL;
|
||||
ULONG client_pid;
|
||||
int r = -1;
|
||||
char *key_blob, *user, *sig, *blob;
|
||||
size_t key_blob_len, user_len, sig_len, blob_len;
|
||||
struct sshkey *key = NULL;
|
||||
HANDLE token = NULL, dup_token = NULL, client_proc = NULL;
|
||||
wchar_t wuser[MAX_USER_NAME_LEN];
|
||||
PWSTR wuser_home = NULL;
|
||||
ULONG client_pid;
|
||||
|
||||
user = NULL;
|
||||
if (sshbuf_get_string_direct(request, &key_blob, &key_blob_len) != 0 ||
|
||||
sshbuf_get_cstring(request, &user, &user_len) != 0 ||
|
||||
sshbuf_get_string_direct(request, &sig, &sig_len) != 0 ||
|
||||
sshbuf_get_string_direct(request, &blob, &blob_len) != 0 ||
|
||||
sshkey_from_blob(key_blob, key_blob_len, &key) != 0) {
|
||||
debug("invalid pubkey auth request");
|
||||
goto done;
|
||||
}
|
||||
user = NULL;
|
||||
if (sshbuf_get_string_direct(request, &key_blob, &key_blob_len) != 0 ||
|
||||
sshbuf_get_cstring(request, &user, &user_len) != 0 ||
|
||||
sshbuf_get_string_direct(request, &sig, &sig_len) != 0 ||
|
||||
sshbuf_get_string_direct(request, &blob, &blob_len) != 0 ||
|
||||
sshkey_from_blob(key_blob, key_blob_len, &key) != 0) {
|
||||
debug("invalid pubkey auth request");
|
||||
goto done;
|
||||
}
|
||||
|
||||
wuser[0] = L'\0';
|
||||
if (MultiByteToWideChar(CP_UTF8, 0, user, user_len + 1, wuser, MAX_USER_NAME_LEN) == 0 ||
|
||||
(token = generate_user_token(wuser)) == 0) {
|
||||
debug("unable to generate token for user %ls", wuser);
|
||||
goto done;
|
||||
}
|
||||
if (MultiByteToWideChar(CP_UTF8, 0, user, user_len + 1, wuser, MAX_USER_NAME_LEN) == 0 ||
|
||||
(token = generate_user_token(wuser)) == 0) {
|
||||
debug("unable to generate token for user %ls", wuser);
|
||||
goto done;
|
||||
}
|
||||
|
||||
con->auth_token = token;
|
||||
|
||||
if (SHGetKnownFolderPath(&FOLDERID_Profile, 0, token, &wuser_home) != S_OK ||
|
||||
pubkey_allowed(key, wuser, wuser_home) != 1) {
|
||||
debug("given public key is not mapped to user %ls (profile:%ls)", wuser, wuser_home);
|
||||
goto done;
|
||||
}
|
||||
if (SHGetKnownFolderPath(&FOLDERID_Profile, 0, token, &wuser_home) != S_OK ||
|
||||
pubkey_allowed(key, wuser, wuser_home) != 1) {
|
||||
debug("given public key is not mapped to user %ls (profile:%ls)", wuser, wuser_home);
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (key_verify(key, sig, sig_len, blob, blob_len) != 1) {
|
||||
debug("signature verification failed");
|
||||
goto done;
|
||||
}
|
||||
|
||||
if ((FALSE == GetNamedPipeClientProcessId(con->connection, &client_pid)) ||
|
||||
( (client_proc = OpenProcess(PROCESS_DUP_HANDLE, FALSE, client_pid)) == NULL) ||
|
||||
(FALSE == DuplicateHandle(GetCurrentProcess(), token, client_proc, &dup_token, TOKEN_QUERY | TOKEN_IMPERSONATE, FALSE, DUPLICATE_SAME_ACCESS)) ||
|
||||
(sshbuf_put_u32(response, dup_token) != 0) ) {
|
||||
debug("failed to authorize user");
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (key_verify(key, sig, sig_len, blob, blob_len) != 1) {
|
||||
debug("signature verification failed");
|
||||
goto done;
|
||||
}
|
||||
|
||||
if ((FALSE == GetNamedPipeClientProcessId(con->connection, &client_pid)) ||
|
||||
( (client_proc = OpenProcess(PROCESS_DUP_HANDLE, FALSE, client_pid)) == NULL) ||
|
||||
(FALSE == DuplicateHandle(GetCurrentProcess(), token, client_proc, &dup_token, TOKEN_QUERY | TOKEN_IMPERSONATE, FALSE, DUPLICATE_SAME_ACCESS)) ||
|
||||
(sshbuf_put_u32(response, dup_token) != 0) ) {
|
||||
debug("failed to authorize user");
|
||||
goto done;
|
||||
}
|
||||
|
||||
{
|
||||
wchar_t *tmp, *userW, *domW;
|
||||
userW = wuser;
|
||||
domW = NULL;
|
||||
if ((tmp = wcschr(userW, L'\\')) != NULL) {
|
||||
domW = userW;
|
||||
userW = tmp + 1;
|
||||
@ -348,41 +349,41 @@ int process_pubkeyauth_request(struct sshbuf* request, struct sshbuf* response,
|
||||
domW = tmp + 1;
|
||||
*tmp = L'\0';
|
||||
}
|
||||
LoadProfile(con, userW, domW);
|
||||
}
|
||||
LoadProfile(con, userW, domW);
|
||||
}
|
||||
|
||||
r = 0;
|
||||
r = 0;
|
||||
done:
|
||||
/* TODO Fix this hacky protocol*/
|
||||
if ((r == -1) && (sshbuf_put_u8(response, SSH_AGENT_FAILURE) == 0))
|
||||
r = 0;
|
||||
|
||||
if (user)
|
||||
free(user);
|
||||
if (key)
|
||||
sshkey_free(key);
|
||||
if (wuser_home)
|
||||
CoTaskMemFree(wuser_home);
|
||||
if (client_proc)
|
||||
CloseHandle(client_proc);
|
||||
return r;
|
||||
if (user)
|
||||
free(user);
|
||||
if (key)
|
||||
sshkey_free(key);
|
||||
if (wuser_home)
|
||||
CoTaskMemFree(wuser_home);
|
||||
if (client_proc)
|
||||
CloseHandle(client_proc);
|
||||
return r;
|
||||
}
|
||||
|
||||
int process_authagent_request(struct sshbuf* request, struct sshbuf* response, struct agent_connection* con) {
|
||||
char *opn;
|
||||
size_t opn_len;
|
||||
if (sshbuf_get_string_direct(request, &opn, &opn_len) != 0) {
|
||||
debug("invalid auth request");
|
||||
return -1;
|
||||
}
|
||||
char *opn;
|
||||
size_t opn_len;
|
||||
if (sshbuf_get_string_direct(request, &opn, &opn_len) != 0) {
|
||||
debug("invalid auth request");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (opn_len == strlen(PUBKEY_AUTH_REQUEST) && memcmp(opn, PUBKEY_AUTH_REQUEST, opn_len) == 0)
|
||||
return process_pubkeyauth_request(request, response, con);
|
||||
else if (opn_len == strlen(PASSWD_AUTH_REQUEST) && memcmp(opn, PASSWD_AUTH_REQUEST, opn_len) == 0)
|
||||
return process_passwordauth_request(request, response, con);
|
||||
else {
|
||||
debug("unknown auth request: %s", opn);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (opn_len == strlen(PUBKEY_AUTH_REQUEST) && memcmp(opn, PUBKEY_AUTH_REQUEST, opn_len) == 0)
|
||||
return process_pubkeyauth_request(request, response, con);
|
||||
else if (opn_len == strlen(PASSWD_AUTH_REQUEST) && memcmp(opn, PASSWD_AUTH_REQUEST, opn_len) == 0)
|
||||
return process_passwordauth_request(request, response, con);
|
||||
else {
|
||||
debug("unknown auth request: %s", opn);
|
||||
return -1;
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user