diff options
Diffstat (limited to 'source4/utils/ntlm_auth.c')
| -rw-r--r-- | source4/utils/ntlm_auth.c | 1179 |
1 files changed, 0 insertions, 1179 deletions
diff --git a/source4/utils/ntlm_auth.c b/source4/utils/ntlm_auth.c deleted file mode 100644 index a4a1c8be607..00000000000 --- a/source4/utils/ntlm_auth.c +++ /dev/null @@ -1,1179 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - Winbind status program. - - Copyright (C) Tim Potter 2000-2003 - Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004 - Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000 - - 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 3 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, see <http://www.gnu.org/licenses/>. -*/ - -#include "includes.h" -#include "system/filesys.h" -#include "lib/cmdline/popt_common.h" -#include <ldb.h> -#include "auth/credentials/credentials.h" -#include "auth/gensec/gensec.h" -#include "auth/gensec/gensec_internal.h" /* TODO: remove this */ -#include "auth/auth.h" -#include "librpc/gen_ndr/ndr_netlogon.h" -#include "auth/auth_sam.h" -#include "libcli/auth/libcli_auth.h" -#include "libcli/security/security.h" -#include "lib/events/events.h" -#include "lib/messaging/messaging.h" -#include "lib/messaging/irpc.h" -#include "auth/ntlmssp/ntlmssp.h" -#include "param/param.h" -#include "lib/util/base64.h" -#include "lib/util/xfile.h" - -#define INITIAL_BUFFER_SIZE 300 -#define MAX_BUFFER_SIZE 63000 - -enum stdio_helper_mode { - SQUID_2_4_BASIC, - SQUID_2_5_BASIC, - SQUID_2_5_NTLMSSP, - NTLMSSP_CLIENT_1, - GSS_SPNEGO_CLIENT, - GSS_SPNEGO_SERVER, - NTLM_SERVER_1, - NUM_HELPER_MODES -}; - -#define NTLM_AUTH_FLAG_USER_SESSION_KEY 0x0004 -#define NTLM_AUTH_FLAG_LMKEY 0x0008 - - -typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode, - struct loadparm_context *lp_ctx, - char *buf, int length, void **private1, - unsigned int mux_id, void **private2); - -static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode, - struct loadparm_context *lp_ctx, - char *buf, int length, void **private1, - unsigned int mux_id, void **private2); - -static void manage_gensec_request (enum stdio_helper_mode stdio_helper_mode, - struct loadparm_context *lp_ctx, - char *buf, int length, void **private1, - unsigned int mux_id, void **private2); - -static void manage_ntlm_server_1_request (enum stdio_helper_mode stdio_helper_mode, - struct loadparm_context *lp_ctx, - char *buf, int length, void **private1, - unsigned int mux_id, void **private2); - -static void manage_squid_request(struct loadparm_context *lp_ctx, - enum stdio_helper_mode helper_mode, - stdio_helper_function fn, void **private2); - -static const struct { - enum stdio_helper_mode mode; - const char *name; - stdio_helper_function fn; -} stdio_helper_protocols[] = { - { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request}, - { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request}, - { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_gensec_request}, - { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gensec_request}, - { GSS_SPNEGO_SERVER, "gss-spnego", manage_gensec_request}, - { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_gensec_request}, - { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request}, - { NUM_HELPER_MODES, NULL, NULL} -}; - -extern int winbindd_fd; - -static const char *opt_username; -static const char *opt_domain; -static const char *opt_workstation; -static const char *opt_password; -static int opt_multiplex; -static int use_cached_creds; -static int opt_allow_mschapv2; - - -static void mux_printf(unsigned int mux_id, const char *format, ...) PRINTF_ATTRIBUTE(2, 3); - -static void mux_printf(unsigned int mux_id, const char *format, ...) -{ - va_list ap; - - if (opt_multiplex) { - x_fprintf(x_stdout, "%d ", mux_id); - } - - va_start(ap, format); - x_vfprintf(x_stdout, format, ap); - va_end(ap); -} - - - -/* Copy of parse_domain_user from winbindd_util.c. Parse a string of the - form DOMAIN/user into a domain and a user */ - -static bool parse_ntlm_auth_domain_user(const char *domuser, char **domain, - char **user, char winbind_separator) -{ - - char *p = strchr(domuser, winbind_separator); - - if (!p) { - return false; - } - - *user = smb_xstrdup(p+1); - *domain = smb_xstrdup(domuser); - (*domain)[PTR_DIFF(p, domuser)] = 0; - - return true; -} - - -/* Authenticate a user with a plaintext password */ - -static bool check_plaintext_auth(const char *user, const char *pass, - bool stdout_diagnostics) -{ - return (strcmp(pass, opt_password) == 0); -} - -/* authenticate a user with an encrypted username/password */ - -static NTSTATUS local_pw_check_specified(struct loadparm_context *lp_ctx, - const char *username, - const char *domain, - const char *workstation, - const DATA_BLOB *challenge, - const DATA_BLOB *lm_response, - const DATA_BLOB *nt_response, - uint32_t flags, - DATA_BLOB *lm_session_key, - DATA_BLOB *user_session_key, - char **error_string, - char **unix_name) -{ - NTSTATUS nt_status; - struct samr_Password lm_pw, nt_pw; - struct samr_Password *lm_pwd, *nt_pwd; - TALLOC_CTX *mem_ctx = talloc_init("local_pw_check_specified"); - if (!mem_ctx) { - nt_status = NT_STATUS_NO_MEMORY; - } else { - uint32_t logon_parameters = 0; - - E_md4hash(opt_password, nt_pw.hash); - if (E_deshash(opt_password, lm_pw.hash)) { - lm_pwd = &lm_pw; - } else { - lm_pwd = NULL; - } - nt_pwd = &nt_pw; - - if (opt_allow_mschapv2) { - logon_parameters |= MSV1_0_ALLOW_MSVCHAPV2; - } - - nt_status = ntlm_password_check(mem_ctx, - lpcfg_lanman_auth(lp_ctx), - lpcfg_ntlm_auth(lp_ctx), - logon_parameters | - MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT | - MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT, - challenge, - lm_response, - nt_response, - username, - username, - domain, - lm_pwd, nt_pwd, user_session_key, lm_session_key); - - if (NT_STATUS_IS_OK(nt_status)) { - if (unix_name) { - if (asprintf(unix_name, "%s%c%s", domain, - *lpcfg_winbind_separator(lp_ctx), - username) < 0) { - nt_status = NT_STATUS_NO_MEMORY; - } - } - } else { - DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n", - domain, username, workstation, - nt_errstr(nt_status))); - } - talloc_free(mem_ctx); - } - if (error_string) { - *error_string = strdup(nt_errstr(nt_status)); - } - return nt_status; - - -} - -static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode, - struct loadparm_context *lp_ctx, - char *buf, int length, void **private1, - unsigned int mux_id, void **private2) -{ - char *user, *pass; - user=buf; - - pass = memchr(buf, ' ', length); - if (!pass) { - DEBUG(2, ("Password not found. Denying access\n")); - mux_printf(mux_id, "ERR\n"); - return; - } - *pass='\0'; - pass++; - - if (stdio_helper_mode == SQUID_2_5_BASIC) { - rfc1738_unescape(user); - rfc1738_unescape(pass); - } - - if (check_plaintext_auth(user, pass, false)) { - mux_printf(mux_id, "OK\n"); - } else { - mux_printf(mux_id, "ERR\n"); - } -} - -/* This is a bit hairy, but the basic idea is to do a password callback - to the calling application. The callback comes from within gensec */ - -static void manage_gensec_get_pw_request(enum stdio_helper_mode stdio_helper_mode, - struct loadparm_context *lp_ctx, - char *buf, int length, void **private1, - unsigned int mux_id, void **password) -{ - DATA_BLOB in; - if (strlen(buf) < 2) { - DEBUG(1, ("query [%s] invalid", buf)); - mux_printf(mux_id, "BH Query invalid\n"); - return; - } - - if (strlen(buf) > 3) { - in = base64_decode_data_blob(buf + 3); - } else { - in = data_blob(NULL, 0); - } - - if (strncmp(buf, "PW ", 3) == 0) { - - *password = talloc_strndup(*private1 /* hopefully the right gensec context, useful to use for talloc */, - (const char *)in.data, in.length); - - if (*password == NULL) { - DEBUG(1, ("Out of memory\n")); - mux_printf(mux_id, "BH Out of memory\n"); - data_blob_free(&in); - return; - } - - mux_printf(mux_id, "OK\n"); - data_blob_free(&in); - return; - } - DEBUG(1, ("Asked for (and expected) a password\n")); - mux_printf(mux_id, "BH Expected a password\n"); - data_blob_free(&in); -} - -/** - * Callback for password credentials. This is not async, and when - * GENSEC and the credentials code is made async, it will look rather - * different. - */ - -static const char *get_password(struct cli_credentials *credentials) -{ - char *password = NULL; - void *cb = cli_credentials_callback_data_void(credentials); - - /* Ask for a password */ - mux_printf((unsigned int)(uintptr_t)cb, "PW\n"); - cli_credentials_set_callback_data(credentials, NULL); - - manage_squid_request(cmdline_lp_ctx, NUM_HELPER_MODES /* bogus */, manage_gensec_get_pw_request, (void **)&password); - return password; -} - -/** - Check if a string is part of a list. -**/ -static bool in_list(const char *s, const char *list, bool casesensitive) -{ - char *tok; - size_t tok_len = 1024; - const char *p=list; - - if (!list) - return false; - - tok = (char *)malloc(tok_len); - if (!tok) { - return false; - } - - while (next_token(&p, tok, LIST_SEP, tok_len)) { - if ((casesensitive?strcmp:strcasecmp_m)(tok,s) == 0) { - free(tok); - return true; - } - } - free(tok); - return false; -} - -static void gensec_want_feature_list(struct gensec_security *state, char* feature_list) -{ - if (in_list("NTLMSSP_FEATURE_SESSION_KEY", feature_list, true)) { - DEBUG(10, ("want GENSEC_FEATURE_SESSION_KEY\n")); - gensec_want_feature(state, GENSEC_FEATURE_SESSION_KEY); - } - if (in_list("NTLMSSP_FEATURE_SIGN", feature_list, true)) { - DEBUG(10, ("want GENSEC_FEATURE_SIGN\n")); - gensec_want_feature(state, GENSEC_FEATURE_SIGN); - } - if (in_list("NTLMSSP_FEATURE_SEAL", feature_list, true)) { - DEBUG(10, ("want GENSEC_FEATURE_SEAL\n")); - gensec_want_feature(state, GENSEC_FEATURE_SEAL); - } -} - -static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode, - struct loadparm_context *lp_ctx, - char *buf, int length, void **private1, - unsigned int mux_id, void **private2) -{ - DATA_BLOB in; - DATA_BLOB out = data_blob(NULL, 0); - char *out_base64 = NULL; - const char *reply_arg = NULL; - struct gensec_ntlm_state { - struct gensec_security *gensec_state; - const char *set_password; - }; - struct gensec_ntlm_state *state; - struct tevent_context *ev; - struct imessaging_context *msg; - - NTSTATUS nt_status; - bool first = false; - const char *reply_code; - struct cli_credentials *creds; - - static char *want_feature_list = NULL; - static DATA_BLOB session_key; - - TALLOC_CTX *mem_ctx; - - if (*private1) { - state = (struct gensec_ntlm_state *)*private1; - } else { - state = talloc_zero(NULL, struct gensec_ntlm_state); - if (!state) { - mux_printf(mux_id, "BH No Memory\n"); - exit(1); - } - *private1 = state; - if (opt_password) { - state->set_password = opt_password; - } - } - - if (strlen(buf) < 2) { - DEBUG(1, ("query [%s] invalid", buf)); - mux_printf(mux_id, "BH Query invalid\n"); - return; - } - - if (strlen(buf) > 3) { - if(strncmp(buf, "SF ", 3) == 0) { - DEBUG(10, ("Setting flags to negotiate\n")); - talloc_free(want_feature_list); - want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3); - mux_printf(mux_id, "OK\n"); - return; - } - in = base64_decode_data_blob(buf + 3); - } else { - in = data_blob(NULL, 0); - } - - if (strncmp(buf, "YR", 2) == 0) { - if (state->gensec_state) { - talloc_free(state->gensec_state); - state->gensec_state = NULL; - } - } else if ( (strncmp(buf, "OK", 2) == 0)) { - /* Just return BH, like ntlm_auth from Samba 3 does. */ - mux_printf(mux_id, "BH Command expected\n"); - data_blob_free(&in); - return; - } else if ( (strncmp(buf, "TT ", 3) != 0) && - (strncmp(buf, "KK ", 3) != 0) && - (strncmp(buf, "AF ", 3) != 0) && - (strncmp(buf, "NA ", 3) != 0) && - (strncmp(buf, "UG", 2) != 0) && - (strncmp(buf, "PW ", 3) != 0) && - (strncmp(buf, "GK", 2) != 0) && - (strncmp(buf, "GF", 2) != 0)) { - DEBUG(1, ("SPNEGO request [%s] invalid\n", buf)); - mux_printf(mux_id, "BH SPNEGO request invalid\n"); - data_blob_free(&in); - return; - } - - ev = s4_event_context_init(state); - if (!ev) { - exit(1); - } - - mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx"); - - /* setup gensec */ - if (!(state->gensec_state)) { - switch (stdio_helper_mode) { - case GSS_SPNEGO_CLIENT: - case NTLMSSP_CLIENT_1: - /* setup the client side */ - - nt_status = gensec_client_start(NULL, &state->gensec_state, - lpcfg_gensec_settings(NULL, lp_ctx)); - if (!NT_STATUS_IS_OK(nt_status)) { - talloc_free(mem_ctx); - exit(1); - } - - break; - case GSS_SPNEGO_SERVER: - case SQUID_2_5_NTLMSSP: - { - const char *winbind_method[] = { "winbind", NULL }; - struct auth4_context *auth_context; - - msg = imessaging_client_init(state, lp_ctx, ev); - if (!msg) { - talloc_free(mem_ctx); - exit(1); - } - nt_status = auth_context_create_methods(mem_ctx, - winbind_method, - ev, - msg, - lp_ctx, - NULL, - &auth_context); - - if (!NT_STATUS_IS_OK(nt_status)) { - talloc_free(mem_ctx); - exit(1); - } - - if (!NT_STATUS_IS_OK(gensec_server_start(state, - lpcfg_gensec_settings(state, lp_ctx), - auth_context, &state->gensec_state))) { - talloc_free(mem_ctx); - exit(1); - } - break; - } - default: - talloc_free(mem_ctx); - abort(); - } - - creds = cli_credentials_init(state->gensec_state); - cli_credentials_set_conf(creds, lp_ctx); - if (opt_username) { - cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED); - } - if (opt_domain) { - cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED); - } - if (state->set_password) { - cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED); - } else { - void *cb = (void*)(uintptr_t)mux_id; - cli_credentials_set_callback_data(creds, cb); - cli_credentials_set_password_callback(creds, get_password); - } - if (opt_workstation) { - cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED); - } - - switch (stdio_helper_mode) { - case GSS_SPNEGO_SERVER: - case SQUID_2_5_NTLMSSP: - cli_credentials_set_machine_account(creds, lp_ctx); - break; - default: - break; - } - - gensec_set_credentials(state->gensec_state, creds); - gensec_want_feature_list(state->gensec_state, want_feature_list); - - switch (stdio_helper_mode) { - case GSS_SPNEGO_CLIENT: - case GSS_SPNEGO_SERVER: - nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO); - if (!in.length) { - first = true; - } - break; - case NTLMSSP_CLIENT_1: - if (!in.length) { - first = true; - } - /* fall through */ - case SQUID_2_5_NTLMSSP: - nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP); - break; - default: - talloc_free(mem_ctx); - abort(); - } - - if (!NT_STATUS_IS_OK(nt_status)) { - DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status))); - mux_printf(mux_id, "BH GENSEC mech failed to start\n"); - talloc_free(mem_ctx); - return; - } - - } - - /* update */ - - if (strncmp(buf, "PW ", 3) == 0) { - state->set_password = talloc_strndup(state, - (const char *)in.data, - in.length); - - cli_credentials_set_password(gensec_get_credentials(state->gensec_state), - state->set_password, - CRED_SPECIFIED); - mux_printf(mux_id, "OK\n"); - data_blob_free(&in); - talloc_free(mem_ctx); - return; - } - - if (strncmp(buf, "UG", 2) == 0) { - int i; - char *grouplist = NULL; - struct auth_session_info *session_info; - - nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info); - if (!NT_STATUS_IS_OK(nt_status)) { - DEBUG(1, ("gensec_session_info failed: %s\n", nt_errstr(nt_status))); - mux_printf(mux_id, "BH %s\n", nt_errstr(nt_status)); - data_blob_free(&in); - talloc_free(mem_ctx); - return; - } - - /* get the string onto the context */ - grouplist = talloc_strdup(mem_ctx, ""); - - for (i=0; i<session_info->security_token->num_sids; i++) { - struct security_token *token = session_info->security_token; - const char *sidstr = dom_sid_string(session_info, - &token->sids[i]); - grouplist = talloc_asprintf_append_buffer(grouplist, "%s,", sidstr); - } - - mux_printf(mux_id, "GL %s\n", grouplist); - talloc_free(session_info); - data_blob_free(&in); - talloc_free(mem_ctx); - return; - } - - if (strncmp(buf, "GK", 2) == 0) { - char *base64_key; - DEBUG(10, ("Requested session key\n")); - nt_status = gensec_session_key(state->gensec_state, mem_ctx, &session_key); - if(!NT_STATUS_IS_OK(nt_status)) { - DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status))); - mux_printf(mux_id, "BH No session key\n"); - talloc_free(mem_ctx); - return; - } else { - base64_key = base64_encode_data_blob(state, session_key); - SMB_ASSERT(base64_key != NULL); - mux_printf(mux_id, "GK %s\n", base64_key); - talloc_free(base64_key); - } - talloc_free(mem_ctx); - return; - } - - if (strncmp(buf, "GF", 2) == 0) { - struct ntlmssp_state *ntlmssp_state; - uint32_t neg_flags; - - ntlmssp_state = talloc_get_type(state->gensec_state->private_data, - struct ntlmssp_state); - neg_flags = ntlmssp_state->neg_flags; - - DEBUG(10, ("Requested negotiated feature flags\n")); - mux_printf(mux_id, "GF 0x%08x\n", neg_flags); - return; - } - - nt_status = gensec_update_ev(state->gensec_state, mem_ctx, ev, in, &out); - - /* don't leak 'bad password'/'no such user' info to the network client */ - nt_status = nt_status_squash(nt_status); - - if (out.length) { - out_base64 = base64_encode_data_blob(mem_ctx, out); - SMB_ASSERT(out_base64 != NULL); - } else { - out_base64 = NULL; - } - - if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) { - reply_arg = "*"; - if (first) { - reply_code = "YR"; - } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) { - reply_code = "KK"; - } else if (state->gensec_state->gensec_role == GENSEC_SERVER) { - reply_code = "TT"; - } else { - abort(); - } - - - } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) { - reply_code = "BH NT_STATUS_ACCESS_DENIED"; - reply_arg = nt_errstr(nt_status); - DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status))); - } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) { - reply_code = "BH NT_STATUS_UNSUCCESSFUL"; - reply_arg = nt_errstr(nt_status); - DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status))); - } else if (!NT_STATUS_IS_OK(nt_status)) { - reply_code = "NA"; - reply_arg = nt_errstr(nt_status); - DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status))); - } else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) { - struct auth_session_info *session_info; - - nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info); - if (!NT_STATUS_IS_OK(nt_status)) { - reply_code = "BH Failed to retrive session info"; - reply_arg = nt_errstr(nt_status); - DEBUG(1, ("GENSEC failed to retrieve the session info: %s\n", nt_errstr(nt_status))); - } else { - - reply_code = "AF"; - reply_arg = talloc_asprintf(state->gensec_state, - "%s%s%s", session_info->info->domain_name, - lpcfg_winbind_separator(lp_ctx), session_info->info->account_name); - talloc_free(session_info); - } - } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) { - reply_code = "AF"; - reply_arg = out_base64; - } else { - abort(); - } - - switch (stdio_helper_mode) { - case GSS_SPNEGO_SERVER: - mux_printf(mux_id, "%s %s %s\n", reply_code, - out_base64 ? out_base64 : "*", - reply_arg ? reply_arg : "*"); - break; - default: - if (out_base64) { - mux_printf(mux_id, "%s %s\n", reply_code, out_base64); - } else if (reply_arg) { - mux_printf(mux_id, "%s %s\n", reply_code, reply_arg); - } else { - mux_printf(mux_id, "%s\n", reply_code); - } - } - - talloc_free(mem_ctx); - return; -} - -static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode, - struct loadparm_context *lp_ctx, - char *buf, int length, void **private1, - unsigned int mux_id, void **private2) -{ - char *request, *parameter; - static DATA_BLOB challenge; - static DATA_BLOB lm_response; - static DATA_BLOB nt_response; - static char *full_username; - static char *username; - static char *domain; - static char *plaintext_password; - static bool ntlm_server_1_user_session_key; - static bool ntlm_server_1_lm_session_key; - - if (strequal(buf, ".")) { - if (!full_username && !username) { - mux_printf(mux_id, "Error: No username supplied!\n"); - } else if (plaintext_password) { - /* handle this request as plaintext */ - if (!full_username) { - if (asprintf(&full_username, "%s%c%s", domain, *lpcfg_winbind_separator(lp_ctx), username) < 0) { - mux_printf(mux_id, "Error: Out of memory in asprintf!\n.\n"); - return; - } - } - if (check_plaintext_auth(full_username, plaintext_password, false)) { - mux_printf(mux_id, "Authenticated: Yes\n"); - } else { - mux_printf(mux_id, "Authenticated: No\n"); - } - } else if (!lm_response.data && !nt_response.data) { - mux_printf(mux_id, "Error: No password supplied!\n"); - } else if (!challenge.data) { - mux_printf(mux_id, "Error: No lanman-challenge supplied!\n"); - } else { - char *error_string = NULL; - DATA_BLOB lm_key; - DATA_BLOB user_session_key; - uint32_t flags = 0; - - if (full_username && !username) { - SAFE_FREE(username); - SAFE_FREE(domain); - if (!parse_ntlm_auth_domain_user(full_username, &username, - &domain, - *lpcfg_winbind_separator(lp_ctx))) { - /* username might be 'tainted', don't print into our new-line deleimianted stream */ - mux_printf(mux_id, "Error: Could not parse into domain and username\n"); - } - } - - if (!domain) { - domain = smb_xstrdup(lpcfg_workgroup(lp_ctx)); - } - - if (ntlm_server_1_lm_session_key) - flags |= NTLM_AUTH_FLAG_LMKEY; - - if (ntlm_server_1_user_session_key) - flags |= NTLM_AUTH_FLAG_USER_SESSION_KEY; - - if (!NT_STATUS_IS_OK( - local_pw_check_specified(lp_ctx, - username, - domain, - lpcfg_netbios_name(lp_ctx), - &challenge, - &lm_response, - &nt_response, - flags, - &lm_key, - &user_session_key, - &error_string, - NULL))) { - - mux_printf(mux_id, "Authenticated: No\n"); - mux_printf(mux_id, "Authentication-Error: %s\n.\n", error_string); - SAFE_FREE(error_string); - } else { - static char zeros[16]; - - mux_printf(mux_id, "Authenticated: Yes\n"); - - if (ntlm_server_1_lm_session_key - && lm_key.length - && (memcmp(zeros, lm_key.data, - lm_key.length) != 0)) { - char hex_lm_key[lm_key.length*2+1]; - hex_encode_buf(hex_lm_key, lm_key.data, - lm_key.length); - mux_printf(mux_id, "LANMAN-Session-Key: %s\n", hex_lm_key); - } - - if (ntlm_server_1_user_session_key - && user_session_key.length - && (memcmp(zeros, user_session_key.data, - user_session_key.length) != 0)) { - char hex_user_session_key[ - user_session_key.length*2+1]; - hex_encode_buf(hex_user_session_key, - user_session_key.data, - user_session_key.length); - mux_printf(mux_id, "User-Session-Key: %s\n", hex_user_session_key); - } - } - } - /* clear out the state */ - challenge = data_blob(NULL, 0); - nt_response = data_blob(NULL, 0); - lm_response = data_blob(NULL, 0); - SAFE_FREE(full_username); - SAFE_FREE(username); - SAFE_FREE(domain); - SAFE_FREE(plaintext_password); - ntlm_server_1_user_session_key = false; - ntlm_server_1_lm_session_key = false; - mux_printf(mux_id, ".\n"); - - return; - } - - request = buf; - - /* Indicates a base64 encoded structure */ - parameter = strstr(request, ":: "); - if (!parameter) { - parameter = strstr(request, ": "); - - if (!parameter) { - DEBUG(0, ("Parameter not found!\n")); - mux_printf(mux_id, "Error: Parameter not found!\n.\n"); - return; - } - - parameter[0] ='\0'; - parameter++; - parameter[0] ='\0'; - parameter++; - - } else { - parameter[0] ='\0'; - parameter++; - parameter[0] ='\0'; - parameter++; - parameter[0] ='\0'; - parameter++; - - base64_decode_inplace(parameter); - } - - if (strequal(request, "LANMAN-Challenge")) { - challenge = strhex_to_data_blob(NULL, parameter); - if (challenge.length != 8) { - mux_printf(mux_id, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n", - parameter, - (int)challenge.length); - challenge = data_blob(NULL, 0); - } - } else if (strequal(request, "NT-Response")) { - nt_response = strhex_to_data_blob(NULL, parameter); - if (nt_response.length < 24) { - mux_printf(mux_id, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n", - parameter, - (int)nt_response.length); - nt_response = data_blob(NULL, 0); - } - } else if (strequal(request, "LANMAN-Response")) { - lm_response = strhex_to_data_blob(NULL, parameter); - if (lm_response.length != 24) { - mux_printf(mux_id, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n", - parameter, - (int)lm_response.length); - lm_response = data_blob(NULL, 0); - } - } else if (strequal(request, "Password")) { - plaintext_password = smb_xstrdup(parameter); - } else if (strequal(request, "NT-Domain")) { - domain = smb_xstrdup(parameter); - } else if (strequal(request, "Username")) { - username = smb_xstrdup(parameter); - } else if (strequal(request, "Full-Username")) { - full_username = smb_xstrdup(parameter); - } else if (strequal(request, "Request-User-Session-Key")) { - ntlm_server_1_user_session_key = strequal(parameter, "Yes"); - } else if (strequal(request, "Request-LanMan-Session-Key")) { - ntlm_server_1_lm_session_key = strequal(parameter, "Yes"); - } else { - mux_printf(mux_id, "Error: Unknown request %s\n.\n", request); - } -} - -static void manage_squid_request(struct loadparm_context *lp_ctx, enum stdio_helper_mode helper_mode, - stdio_helper_function fn, void **private2) -{ - char *buf; - char tmp[INITIAL_BUFFER_SIZE+1]; - unsigned int mux_id = 0; - int length, buf_size = 0; - char *c; - struct mux_private { - unsigned int max_mux; - void **private_pointers; - }; - - static struct mux_private *mux_private; - static void *normal_private; - void **private1; - - buf = talloc_strdup(NULL, ""); - - if (buf == NULL) { - DEBUG(0, ("Failed to allocate memory for reading the input " - "buffer.\n")); - x_fprintf(x_stdout, "ERR\n"); - return; - } - - do { - /* this is not a typo - x_fgets doesn't work too well under - * squid */ - if (fgets(tmp, INITIAL_BUFFER_SIZE, stdin) == NULL) { - if (ferror(stdin)) { - DEBUG(1, ("fgets() failed! dying..... errno=%d " - "(%s)\n", ferror(stdin), - strerror(ferror(stdin)))); - - exit(1); /* BIIG buffer */ - } - exit(0); - } - - buf = talloc_strdup_append_buffer(buf, tmp); - buf_size += INITIAL_BUFFER_SIZE; - - if (buf_size > MAX_BUFFER_SIZE) { - DEBUG(0, ("Invalid Request (too large)\n")); - x_fprintf(x_stdout, "ERR\n"); - talloc_free(buf); - return; - } - - c = strchr(buf, '\n'); - } while (c == NULL); - - *c = '\0'; - length = c-buf; - - DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length)); - - if (buf[0] == '\0') { - DEBUG(0, ("Invalid Request (empty)\n")); - x_fprintf(x_stdout, "ERR\n"); - talloc_free(buf); - return; - } - - if (opt_multiplex) { - if (sscanf(buf, "%u ", &mux_id) != 1) { - DEBUG(0, ("Invalid Request - no multiplex id\n")); - x_fprintf(x_stdout, "ERR\n"); - talloc_free(buf); - return; - } - if (!mux_private) { - mux_private = talloc(NULL, struct mux_private); - mux_private->max_mux = 0; - mux_private->private_pointers = NULL; - } - - c=strchr(buf,' '); - if (!c) { - DEBUG(0, ("Invalid Request - no data after multiplex id\n")); - x_fprintf(x_stdout, "ERR\n"); - talloc_free(buf); - return; - } - c++; - if (mux_id >= mux_private->max_mux) { - unsigned int prev_max = mux_private->max_mux; - mux_private->max_mux = mux_id + 1; - mux_private->private_pointers - = talloc_realloc(mux_private, - mux_private->private_pointers, - void *, mux_private->max_mux); - memset(&mux_private->private_pointers[prev_max], '\0', - (sizeof(*mux_private->private_pointers) * (mux_private->max_mux - prev_max))); - }; - - private1 = &mux_private->private_pointers[mux_id]; - } else { - c = buf; - private1 = &normal_private; - } - - fn(helper_mode, lp_ctx, c, length, private1, mux_id, private2); - talloc_free(buf); -} - -static void squid_stream(struct loadparm_context *lp_ctx, - enum stdio_helper_mode stdio_mode, - stdio_helper_function fn) { - /* initialize FDescs */ - x_setbuf(x_stdout, NULL); - x_setbuf(x_stderr, NULL); - while(1) { - manage_squid_request(lp_ctx, stdio_mode, fn, NULL); - } -} - - -/* Main program */ - -enum { - OPT_USERNAME = 1000, - OPT_DOMAIN, - OPT_WORKSTATION, - OPT_CHALLENGE, - OPT_RESPONSE, - OPT_LM, - OPT_NT, - OPT_PASSWORD, - OPT_LM_KEY, - OPT_USER_SESSION_KEY, - OPT_DIAGNOSTICS, - OPT_REQUIRE_MEMBERSHIP, - OPT_MULTIPLEX, - OPT_USE_CACHED_CREDS, - OPT_ALLOW_MSCHAPV2, -}; - -int main(int argc, const char **argv) -{ - static const char *helper_protocol; - int opt; - - poptContext pc; - - /* NOTE: DO NOT change this interface without considering the implications! - This is an external interface, which other programs will use to interact - with this helper. - */ - - /* We do not use single-letter command abbreviations, because they harm future - interface stability. */ - - struct poptOption long_options[] = { - POPT_AUTOHELP - { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"}, - { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"}, - { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"}, - { "username", 0, POPT_ARG_STRING, &opt_username, OPT_PASSWORD, "Username"}, - { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"}, - { "multiplex", 0, POPT_ARG_NONE, &opt_multiplex, OPT_MULTIPLEX, "Multiplex Mode"}, - { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "silently ignored for compatibility reasons"}, - { "allow-mschapv2", 0, POPT_ARG_NONE, &opt_allow_mschapv2, OPT_ALLOW_MSCHAPV2, "Explicitly allow MSCHAPv2" }, - POPT_COMMON_SAMBA - POPT_COMMON_VERSION - { NULL } - }; - - /* Samba client initialisation */ - - setup_logging(NULL, DEBUG_STDERR); - - /* Parse options */ - - pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0); - - /* Parse command line options */ - - if (argc == 1) { - poptPrintHelp(pc, stderr, 0); - return 1; - } - - pc = poptGetContext(NULL, argc, (const char **)argv, long_options, - POPT_CONTEXT_KEEP_FIRST); - - while((opt = poptGetNextOpt(pc)) != -1) { - if (opt < -1) { - break; - } - } - if (opt < -1) { - fprintf(stderr, "%s: %s\n", - poptBadOption(pc, POPT_BADOPTION_NOALIAS), - poptStrerror(opt)); - return 1; - } - - gensec_init(); - - if (opt_domain == NULL) { - opt_domain = lpcfg_workgroup(cmdline_lp_ctx); - } - - if (helper_protocol) { - int i; - for (i=0; i<NUM_HELPER_MODES; i++) { - if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) { - squid_stream(cmdline_lp_ctx, stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn); - exit(0); - } - } - x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol); - - for (i=0; i<NUM_HELPER_MODES; i++) { - x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name); - } - - exit(1); - } - - if (!opt_username) { - x_fprintf(x_stderr, "username must be specified!\n\n"); - poptPrintHelp(pc, stderr, 0); - exit(1); - } - - if (opt_workstation == NULL) { - opt_workstation = lpcfg_netbios_name(cmdline_lp_ctx); - } - - if (!opt_password) { - char pwd[256] = {0}; - int rc; - - rc = samba_getpass("Password: ", pwd, sizeof(pwd), false, false); - if (rc == 0) { - opt_password = smb_xstrdup(pwd); - } - } - - { - char *user; - - if (asprintf(&user, "%s%c%s", opt_domain, - *lpcfg_winbind_separator(cmdline_lp_ctx), - opt_username) < 0) { - return 1; - } - if (!check_plaintext_auth(user, opt_password, true)) { - return 1; - } - } - - /* Exit code */ - - poptFreeContext(pc); - return 0; -} |