diff options
author | Alberto Gonzalez Iniesta <agi@inittab.org> | 2016-12-27 18:25:47 +0100 |
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committer | Alberto Gonzalez Iniesta <agi@inittab.org> | 2016-12-27 18:25:47 +0100 |
commit | 79f3537f69e125f19f59c36aa090120a63186a54 (patch) | |
tree | 2089a3b7dac990841dbc2e4d9b2f535b82dbb0af /src/openvpnserv/validate.c | |
parent | f2137fedb30cb87448eb03b2f288920df6187571 (diff) | |
parent | 3a2bbdb05ca6a6996e424c9fb225cb0d53804125 (diff) |
Merge tag 'upstream/2.4.0'
Upstream version 2.4.0
Diffstat (limited to 'src/openvpnserv/validate.c')
-rw-r--r-- | src/openvpnserv/validate.c | 124 |
1 files changed, 67 insertions, 57 deletions
diff --git a/src/openvpnserv/validate.c b/src/openvpnserv/validate.c index 7458d75..c9c3855 100644 --- a/src/openvpnserv/validate.c +++ b/src/openvpnserv/validate.c @@ -29,41 +29,41 @@ #include <lm.h> static const WCHAR *white_list[] = - { - L"auth-retry", - L"config", - L"log", - L"log-append", - L"management", - L"management-forget-disconnect", - L"management-hold", - L"management-query-passwords", - L"management-query-proxy", - L"management-signal", - L"management-up-down", - L"mute", - L"setenv", - L"service", - L"verb", - - NULL /* last value */ - }; +{ + L"auth-retry", + L"config", + L"log", + L"log-append", + L"management", + L"management-forget-disconnect", + L"management-hold", + L"management-query-passwords", + L"management-query-proxy", + L"management-signal", + L"management-up-down", + L"mute", + L"setenv", + L"service", + L"verb", + + NULL /* last value */ +}; /* * Check workdir\fname is inside config_dir * The logic here is simple: we may reject some valid paths if ..\ is in any of the strings */ static BOOL -CheckConfigPath (const WCHAR *workdir, const WCHAR *fname, const settings_t *s) +CheckConfigPath(const WCHAR *workdir, const WCHAR *fname, const settings_t *s) { WCHAR tmp[MAX_PATH]; const WCHAR *config_file = NULL; const WCHAR *config_dir = NULL; /* convert fname to full path */ - if (PathIsRelativeW (fname) ) + if (PathIsRelativeW(fname) ) { - snwprintf (tmp, _countof(tmp), L"%s\\%s", workdir, fname); + snwprintf(tmp, _countof(tmp), L"%s\\%s", workdir, fname); tmp[_countof(tmp)-1] = L'\0'; config_file = tmp; } @@ -75,17 +75,19 @@ CheckConfigPath (const WCHAR *workdir, const WCHAR *fname, const settings_t *s) #ifdef UNICODE config_dir = s->config_dir; #else - if (MultiByteToWideChar (CP_UTF8, 0, s->config_dir, -1, widepath, MAX_PATH) == 0) + if (MultiByteToWideChar(CP_UTF8, 0, s->config_dir, -1, widepath, MAX_PATH) == 0) { - MsgToEventLog (M_SYSERR, TEXT("Failed to convert config_dir name to WideChar")); + MsgToEventLog(M_SYSERR, TEXT("Failed to convert config_dir name to WideChar")); return FALSE; } config_dir = widepath; #endif - if (wcsncmp (config_dir, config_file, wcslen(config_dir)) == 0 && - wcsstr (config_file + wcslen(config_dir), L"..") == NULL ) + if (wcsncmp(config_dir, config_file, wcslen(config_dir)) == 0 + && wcsstr(config_file + wcslen(config_dir), L"..") == NULL) + { return TRUE; + } return FALSE; } @@ -96,14 +98,16 @@ CheckConfigPath (const WCHAR *workdir, const WCHAR *fname, const settings_t *s) * Returns index to the item if found, -1 otherwise. */ static int -OptionLookup (const WCHAR *name, const WCHAR *white_list[]) +OptionLookup(const WCHAR *name, const WCHAR *white_list[]) { int i; - for (i = 0 ; white_list[i]; i++) + for (i = 0; white_list[i]; i++) { - if ( wcscmp(white_list[i], name) == 0 ) + if (wcscmp(white_list[i], name) == 0) + { return i; + } } return -1; @@ -114,7 +118,7 @@ OptionLookup (const WCHAR *name, const WCHAR *white_list[]) * Get the local name of the group using the SID. */ static BOOL -GetBuiltinAdminGroupName (WCHAR *name, DWORD nlen) +GetBuiltinAdminGroupName(WCHAR *name, DWORD nlen) { BOOL b = FALSE; PSID admin_sid = NULL; @@ -126,15 +130,17 @@ GetBuiltinAdminGroupName (WCHAR *name, DWORD nlen) admin_sid = malloc(sid_size); if (!admin_sid) + { return FALSE; + } b = CreateWellKnownSid(WinBuiltinAdministratorsSid, NULL, admin_sid, &sid_size); - if(b) + if (b) { b = LookupAccountSidW(NULL, admin_sid, name, &nlen, domain, &dlen, &snu); } - free (admin_sid); + free(admin_sid); return b; } @@ -144,7 +150,7 @@ GetBuiltinAdminGroupName (WCHAR *name, DWORD nlen) * the group specified in s->ovpn_admin_group */ BOOL -IsAuthorizedUser (SID *sid, settings_t *s) +IsAuthorizedUser(SID *sid, settings_t *s) { LOCALGROUP_USERS_INFO_0 *groups = NULL; DWORD nread; @@ -160,19 +166,19 @@ IsAuthorizedUser (SID *sid, settings_t *s) SID_NAME_USE sid_type; /* Get username */ - if (!LookupAccountSidW (NULL, sid, username, &len, domain, &len, &sid_type)) + if (!LookupAccountSidW(NULL, sid, username, &len, domain, &len, &sid_type)) { - MsgToEventLog (M_SYSERR, TEXT("LookupAccountSid")); + MsgToEventLog(M_SYSERR, TEXT("LookupAccountSid")); goto out; } /* Get an array of groups the user is member of */ - err = NetUserGetLocalGroups (NULL, username, 0, LG_INCLUDE_INDIRECT, (LPBYTE *) &groups, - MAX_PREFERRED_LENGTH, &nread, &nmax); + err = NetUserGetLocalGroups(NULL, username, 0, LG_INCLUDE_INDIRECT, (LPBYTE *) &groups, + MAX_PREFERRED_LENGTH, &nread, &nmax); if (err && err != ERROR_MORE_DATA) { - SetLastError (err); - MsgToEventLog (M_SYSERR, TEXT("NetUserGetLocalGroups")); + SetLastError(err); + MsgToEventLog(M_SYSERR, TEXT("NetUserGetLocalGroups")); goto out; } @@ -182,7 +188,7 @@ IsAuthorizedUser (SID *sid, settings_t *s) } else { - MsgToEventLog (M_SYSERR, TEXT("Failed to get the name of Administrators group. Using the default.")); + MsgToEventLog(M_SYSERR, TEXT("Failed to get the name of Administrators group. Using the default.")); /* use the default value */ admin_group[0] = SYSTEM_ADMIN_GROUP; } @@ -191,25 +197,25 @@ IsAuthorizedUser (SID *sid, settings_t *s) admin_group[1] = s->ovpn_admin_group; #else tmp = NULL; - len = MultiByteToWideChar (CP_UTF8, 0, s->ovpn_admin_group, -1, NULL, 0); - if (len == 0 || (tmp = malloc (len*sizeof(WCHAR))) == NULL) + len = MultiByteToWideChar(CP_UTF8, 0, s->ovpn_admin_group, -1, NULL, 0); + if (len == 0 || (tmp = malloc(len*sizeof(WCHAR))) == NULL) { - MsgToEventLog (M_SYSERR, TEXT("Failed to convert admin group name to WideChar")); + MsgToEventLog(M_SYSERR, TEXT("Failed to convert admin group name to WideChar")); goto out; } - MultiByteToWideChar (CP_UTF8, 0, s->ovpn_admin_group, -1, tmp, len); + MultiByteToWideChar(CP_UTF8, 0, s->ovpn_admin_group, -1, tmp, len); admin_group[1] = tmp; #endif /* Check if user's groups include any of the admin groups */ for (i = 0; i < nread; i++) { - if ( wcscmp (groups[i].lgrui0_name, admin_group[0]) == 0 || - wcscmp (groups[i].lgrui0_name, admin_group[1]) == 0 - ) + if (wcscmp(groups[i].lgrui0_name, admin_group[0]) == 0 + || wcscmp(groups[i].lgrui0_name, admin_group[1]) == 0 + ) { - MsgToEventLog (M_INFO, TEXT("Authorizing user %s by virtue of membership in group %s"), - username, groups[i].lgrui0_name); + MsgToEventLog(M_INFO, TEXT("Authorizing user %s by virtue of membership in group %s"), + username, groups[i].lgrui0_name); ret = TRUE; break; } @@ -217,8 +223,10 @@ IsAuthorizedUser (SID *sid, settings_t *s) out: if (groups) - NetApiBufferFree (groups); - free (tmp); + { + NetApiBufferFree(groups); + } + free(tmp); return ret; } @@ -229,21 +237,23 @@ out: * The caller should set argc to the number of valid elements in argv[] array. */ BOOL -CheckOption (const WCHAR *workdir, int argc, WCHAR *argv[], const settings_t *s) +CheckOption(const WCHAR *workdir, int argc, WCHAR *argv[], const settings_t *s) { /* Do not modify argv or *argv -- ideally it should be const WCHAR *const *, but alas...*/ - if ( wcscmp (argv[0], L"--config") == 0 && - argc > 1 && - !CheckConfigPath (workdir, argv[1], s) - ) + if (wcscmp(argv[0], L"--config") == 0 + && argc > 1 + && !CheckConfigPath(workdir, argv[1], s) + ) { return FALSE; } /* option name starts at 2 characters from argv[i] */ - if (OptionLookup (argv[0] + 2, white_list) == -1) /* not found */ + if (OptionLookup(argv[0] + 2, white_list) == -1) /* not found */ + { return FALSE; + } return TRUE; } |