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00024 #include "includes.h"
00025
00026
00027
00028
00029 static DOM_SID *global_sam_sid=NULL;
00030
00031 #undef DBGC_CLASS
00032 #define DBGC_CLASS DBGC_PASSDB
00033
00034
00035
00036
00037
00038
00039 static BOOL read_sid_from_file(const char *fname, DOM_SID *sid)
00040 {
00041 char **lines;
00042 int numlines;
00043 BOOL ret;
00044
00045 lines = file_lines_load(fname, &numlines,0);
00046
00047 if (!lines || numlines < 1) {
00048 if (lines) file_lines_free(lines);
00049 return False;
00050 }
00051
00052 ret = string_to_sid(sid, lines[0]);
00053 file_lines_free(lines);
00054 return ret;
00055 }
00056
00057
00058
00059
00060 static void generate_random_sid(DOM_SID *sid)
00061 {
00062 int i;
00063 uchar raw_sid_data[12];
00064
00065 memset((char *)sid, '\0', sizeof(*sid));
00066 sid->sid_rev_num = 1;
00067 sid->id_auth[5] = 5;
00068 sid->num_auths = 0;
00069 sid->sub_auths[sid->num_auths++] = 21;
00070
00071 generate_random_buffer(raw_sid_data, 12);
00072 for (i = 0; i < 3; i++)
00073 sid->sub_auths[sid->num_auths++] = IVAL(raw_sid_data, i*4);
00074 }
00075
00076
00077
00078
00079
00080 static DOM_SID *pdb_generate_sam_sid(void)
00081 {
00082 DOM_SID domain_sid;
00083 char *fname = NULL;
00084 DOM_SID *sam_sid;
00085
00086 if(!(sam_sid=SMB_MALLOC_P(DOM_SID)))
00087 return NULL;
00088
00089 if ( IS_DC ) {
00090 if (secrets_fetch_domain_sid(lp_workgroup(), &domain_sid)) {
00091 sid_copy(sam_sid, &domain_sid);
00092 return sam_sid;
00093 }
00094 }
00095
00096 if (secrets_fetch_domain_sid(global_myname(), sam_sid)) {
00097
00098
00099 if ( !IS_DC )
00100 return sam_sid;
00101
00102 if (!secrets_fetch_domain_sid(lp_workgroup(), &domain_sid)) {
00103
00104
00105
00106 if (!secrets_store_domain_sid(lp_workgroup(), sam_sid)) {
00107 DEBUG(0,("pdb_generate_sam_sid: Can't store domain SID as a pdc/bdc.\n"));
00108 SAFE_FREE(sam_sid);
00109 return NULL;
00110 }
00111 return sam_sid;
00112 }
00113
00114 if (!sid_equal(&domain_sid, sam_sid)) {
00115
00116
00117
00118 DEBUG(0,("pdb_generate_sam_sid: Mismatched SIDs as a pdc/bdc.\n"));
00119 if (!secrets_store_domain_sid(global_myname(), &domain_sid)) {
00120 DEBUG(0,("pdb_generate_sam_sid: Can't re-store domain SID for local sid as PDC/BDC.\n"));
00121 SAFE_FREE(sam_sid);
00122 return NULL;
00123 }
00124 return sam_sid;
00125 }
00126
00127 return sam_sid;
00128
00129 }
00130
00131
00132 asprintf(&fname, "%s/MACHINE.SID", lp_private_dir());
00133
00134 if (read_sid_from_file(fname, sam_sid)) {
00135
00136 if (!secrets_store_domain_sid(global_myname(), sam_sid)) {
00137 DEBUG(0,("pdb_generate_sam_sid: Failed to store SID from file.\n"));
00138 SAFE_FREE(fname);
00139 SAFE_FREE(sam_sid);
00140 return NULL;
00141 }
00142 unlink(fname);
00143 if ( !IS_DC ) {
00144 if (!secrets_store_domain_sid(lp_workgroup(), sam_sid)) {
00145 DEBUG(0,("pdb_generate_sam_sid: Failed to store domain SID from file.\n"));
00146 SAFE_FREE(fname);
00147 SAFE_FREE(sam_sid);
00148 return NULL;
00149 }
00150 }
00151
00152
00153 SAFE_FREE(fname);
00154 return sam_sid;
00155 }
00156
00157 SAFE_FREE(fname);
00158
00159
00160
00161 generate_random_sid(sam_sid);
00162
00163 if (!secrets_store_domain_sid(global_myname(), sam_sid)) {
00164 DEBUG(0,("pdb_generate_sam_sid: Failed to store generated machine SID.\n"));
00165 SAFE_FREE(sam_sid);
00166 return NULL;
00167 }
00168 if ( IS_DC ) {
00169 if (!secrets_store_domain_sid(lp_workgroup(), sam_sid)) {
00170 DEBUG(0,("pdb_generate_sam_sid: Failed to store generated domain SID.\n"));
00171 SAFE_FREE(sam_sid);
00172 return NULL;
00173 }
00174 }
00175
00176 return sam_sid;
00177 }
00178
00179
00180 DOM_SID *get_global_sam_sid(void)
00181 {
00182 if (global_sam_sid != NULL)
00183 return global_sam_sid;
00184
00185
00186
00187
00188 if (!(global_sam_sid = pdb_generate_sam_sid())) {
00189 smb_panic("Could not generate a machine SID\n");
00190 }
00191
00192 return global_sam_sid;
00193 }
00194
00195
00196
00197
00198 void reset_global_sam_sid(void)
00199 {
00200 SAFE_FREE(global_sam_sid);
00201 }
00202
00203
00204
00205
00206
00207 BOOL sid_check_is_domain(const DOM_SID *sid)
00208 {
00209 return sid_equal(sid, get_global_sam_sid());
00210 }
00211
00212
00213
00214
00215
00216 BOOL sid_check_is_in_our_domain(const DOM_SID *sid)
00217 {
00218 DOM_SID dom_sid;
00219 uint32 rid;
00220
00221 sid_copy(&dom_sid, sid);
00222 sid_split_rid(&dom_sid, &rid);
00223
00224 return sid_equal(&dom_sid, get_global_sam_sid());
00225 }