diff options
Diffstat (limited to 'source3')
| -rw-r--r-- | source3/Makefile.in | 5 | ||||
| -rw-r--r-- | source3/auth/auth_script.c | 155 | ||||
| -rw-r--r-- | source3/configure.in | 3 | ||||
| -rw-r--r-- | source3/lib/smbrun.c | 4 |
4 files changed, 164 insertions, 3 deletions
diff --git a/source3/Makefile.in b/source3/Makefile.in index 32e8dee123..3a5f31a1b5 100644 --- a/source3/Makefile.in +++ b/source3/Makefile.in @@ -368,6 +368,7 @@ AUTH_RHOSTS_OBJ = auth/auth_rhosts.o AUTH_SERVER_OBJ = auth/auth_server.o AUTH_UNIX_OBJ = auth/auth_unix.o AUTH_WINBIND_OBJ = auth/auth_winbind.o +AUTH_SCRIPT_OBJ = auth/auth_script.o AUTH_OBJ = auth/auth.o @AUTH_STATIC@ auth/auth_util.o auth/auth_compat.o \ auth/auth_ntlmssp.o \ @@ -1165,6 +1166,10 @@ bin/domain.@SHLIBEXT@: $(AUTH_DOMAIN_OBJ:.o=.@PICSUFFIX@) @echo "Building plugin $@" @$(SHLD) $(LDSHFLAGS) -o $@ $(AUTH_DOMAIN_OBJ:.o=.@PICSUFFIX@) @SONAMEFLAG@`basename $@` +bin/script.@SHLIBEXT@: $(AUTH_SCRIPT_OBJ:.o=.@PICSUFFIX@) + @echo "Building plugin $@" + @$(SHLD) $(LDSHFLAGS) -o $@ $(AUTH_SCRIPT_OBJ:.o=.@PICSUFFIX@) @SONAMEFLAG@`basename $@` + bin/smbserver.@SHLIBEXT@: $(AUTH_SERVER_OBJ:.o=.@PICSUFFIX@) @echo "Building plugin $@" @$(SHLD) $(LDSHFLAGS) -o $@ $(AUTH_SERVER_OBJ:.o=.@PICSUFFIX@) @SONAMEFLAG@`basename $@` diff --git a/source3/auth/auth_script.c b/source3/auth/auth_script.c new file mode 100644 index 0000000000..1a715fca31 --- /dev/null +++ b/source3/auth/auth_script.c @@ -0,0 +1,155 @@ +/* + Unix SMB/CIFS implementation. + + Call out to a shell script for an authentication check. + + Copyright (C) Jeremy Allison 2005. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.h" + +#undef malloc + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_AUTH + +/* Create a string containing the supplied : + * domain\n + * user\n + * ascii hex challenge\n + * ascii hex LM response\n + * ascii hex NT response\n\0 + * and execute a shell script to check this. + * Allows external programs to create users on demand. + * Script returns zero on success, non-zero on fail. + */ + +static NTSTATUS script_check_user_credentials(const struct auth_context *auth_context, + void *my_private_data, + TALLOC_CTX *mem_ctx, + const auth_usersupplied_info *user_info, + auth_serversupplied_info **server_info) +{ + const char *script = lp_parm_const_string( GLOBAL_SECTION_SNUM, "auth_script", "script", NULL); + char *secret_str; + size_t secret_str_len; + char hex_str[49]; + int ret, i; + + if (!script) { + return NT_STATUS_INVALID_PARAMETER; + } + + if (!user_info) { + return NT_STATUS_INVALID_PARAMETER; + } + + if (!auth_context) { + DEBUG(3,("script_check_user_credentials: no auth_info !\n")); + return NT_STATUS_INVALID_PARAMETER; + } + + secret_str_len = strlen(user_info->domain.str) + 1 + + strlen(user_info->smb_name.str) + 1 + + 16 + 1 + /* 8 bytes of challenge going to 16 */ + 48 + 1 + /* 24 bytes of challenge going to 48 */ + 48 + 1; + + secret_str = malloc(secret_str_len); + if (!secret_str) { + return NT_STATUS_NO_MEMORY; + } + + safe_strcpy( secret_str, user_info->domain.str, secret_str_len - 1); + safe_strcat( secret_str, "\n", secret_str_len - 1); + safe_strcat( secret_str, user_info->smb_name.str, secret_str_len - 1); + safe_strcat( secret_str, "\n", secret_str_len - 1); + + for (i = 0; i < 8; i++) { + slprintf(&hex_str[i*2], 3, "%02X", auth_context->challenge.data[i]); + } + safe_strcat( secret_str, hex_str, secret_str_len - 1); + safe_strcat( secret_str, "\n", secret_str_len - 1); + + if (user_info->lm_resp.data) { + for (i = 0; i < 24; i++) { + slprintf(&hex_str[i*2], 3, "%02X", user_info->lm_resp.data[i]); + } + safe_strcat( secret_str, hex_str, secret_str_len - 1); + } + safe_strcat( secret_str, "\n", secret_str_len - 1); + + if (user_info->nt_resp.data) { + for (i = 0; i < 24; i++) { + slprintf(&hex_str[i*2], 3, "%02X", user_info->nt_resp.data[i]); + } + safe_strcat( secret_str, hex_str, secret_str_len - 1); + } + safe_strcat( secret_str, "\n", secret_str_len - 1); + + DEBUG(10,("script_check_user_credentials: running %s with parameters:\n%s\n", + script, secret_str )); + + ret = smbrunsecret( script, secret_str); + + SAFE_FREE(secret_str); + + if (ret) { + DEBUG(1,("script_check_user_credentials: failed to authenticate %s\\%s\n", + user_info->domain.str, user_info->smb_name.str )); + /* auth failed. */ + return NT_STATUS_NO_SUCH_USER; + } + + /* Cause the auth system to keep going.... */ + return NT_STATUS_NOT_IMPLEMENTED; +} + +/* module initialisation */ +static NTSTATUS auth_init_script(struct auth_context *auth_context, const char *param, auth_methods **auth_method) +{ + if (!make_auth_methods(auth_context, auth_method)) { + return NT_STATUS_NO_MEMORY; + } + + (*auth_method)->name = "script"; + (*auth_method)->auth = script_check_user_credentials; + + if (param && *param) { + /* we load the 'fallback' module - if script isn't here, call this + module */ + if (!load_auth_module(auth_context, param, (auth_methods **)&(*auth_method)->private_data)) { + return NT_STATUS_UNSUCCESSFUL; + } + + } + return NT_STATUS_OK; +} + +#if 0 +/* Define this to build static. */ +NTSTATUS auth_script_init(void) +{ + return smb_register_auth(AUTH_INTERFACE_VERSION, "script", auth_init_script); +} +#else +/* Define this to build shared. */ +NTSTATUS init_module(void) +{ + return smb_register_auth(AUTH_INTERFACE_VERSION, "script", auth_init_script); +} +#endif diff --git a/source3/configure.in b/source3/configure.in index c0afe0de1d..dbb27d1a60 100644 --- a/source3/configure.in +++ b/source3/configure.in @@ -460,7 +460,7 @@ dnl These have to be built static: default_static_modules="pdb_smbpasswd pdb_tdbsam rpc_lsa rpc_samr rpc_reg rpc_lsa_ds rpc_wks rpc_svcctl rpc_net rpc_dfs rpc_srv rpc_spoolss rpc_eventlog auth_rhosts auth_sam auth_unix auth_winbind auth_server auth_domain auth_builtin printerdb_file" dnl These are preferably build shared, and static if dlopen() is not available -default_shared_modules="vfs_recycle vfs_audit vfs_extd_audit vfs_full_audit vfs_netatalk vfs_fake_perms vfs_default_quota vfs_readonly vfs_cap vfs_expand_msdfs vfs_shadow_copy charset_CP850 charset_CP437" +default_shared_modules="vfs_recycle vfs_audit vfs_extd_audit vfs_full_audit vfs_netatalk vfs_fake_perms vfs_default_quota vfs_readonly vfs_cap vfs_expand_msdfs vfs_shadow_copy charset_CP850 charset_CP437 auth_script" if test "x$developer" = xyes; then default_static_modules="$default_static_modules rpc_echo" @@ -4973,6 +4973,7 @@ SMB_MODULE(auth_winbind, \$(AUTH_WINBIND_OBJ), "bin/winbind.$SHLIBEXT", AUTH) SMB_MODULE(auth_server, \$(AUTH_SERVER_OBJ), "bin/smbserver.$SHLIBEXT", AUTH) SMB_MODULE(auth_domain, \$(AUTH_DOMAIN_OBJ), "bin/domain.$SHLIBEXT", AUTH) SMB_MODULE(auth_builtin, \$(AUTH_BUILTIN_OBJ), "bin/builtin.$SHLIBEXT", AUTH) +SMB_MODULE(auth_script, \$(AUTH_SCRIPT_OBJ), "bin/script.$SHLIBEXT", AUTH) SMB_SUBSYSTEM(AUTH,auth/auth.o) SMB_MODULE(vfs_recycle, \$(VFS_RECYCLE_OBJ), "bin/recycle.$SHLIBEXT", VFS) diff --git a/source3/lib/smbrun.c b/source3/lib/smbrun.c index 43cb209174..13e330dd97 100644 --- a/source3/lib/smbrun.c +++ b/source3/lib/smbrun.c @@ -55,7 +55,7 @@ run a command being careful about uid/gid handling and putting the output in outfd (or discard it if outfd is NULL). ****************************************************************************/ -int smbrun(char *cmd, int *outfd) +int smbrun(const char *cmd, int *outfd) { pid_t pid; uid_t uid = current_user.uid; @@ -186,7 +186,7 @@ outfd (or discard it if outfd is NULL). sends the provided secret to the child stdin. ****************************************************************************/ -int smbrunsecret(char *cmd, char *secret) +int smbrunsecret(const char *cmd, const char *secret) { pid_t pid; uid_t uid = current_user.uid; |