--- /dev/null
+/*
+ * Convert AFS acls to NT acls and vice versa.
+ *
+ * Copyright (C) Volker Lendecke, 2003
+ *
+ * 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 DBGC_CLASS
+#define DBGC_CLASS DBGC_VFS
+
+#include <afs/stds.h>
+#include <afs/afs.h>
+#include <afs/auth.h>
+#include <afs/venus.h>
+#include <afs/prs_fs.h>
+
+#define MAXSIZE 2048
+
+extern const DOM_SID global_sid_World;
+extern const DOM_SID global_sid_Builtin_Administrators;
+extern const DOM_SID global_sid_Builtin_Backup_Operators;
+extern const DOM_SID global_sid_Authenticated_Users;
+extern const DOM_SID global_sid_NULL;
+
+static char space_replacement = '%';
+
+/* Do we expect SIDs as pts names? */
+static BOOL sidpts;
+
+extern int afs_syscall(int, char *, int, char *, int);
+
+struct afs_ace {
+ BOOL positive;
+ char *name;
+ DOM_SID sid;
+ enum SID_NAME_USE type;
+ uint32 rights;
+ struct afs_ace *next;
+};
+
+struct afs_acl {
+ TALLOC_CTX *ctx;
+ int type;
+ int num_aces;
+ struct afs_ace *acelist;
+};
+
+struct afs_iob {
+ char *in, *out;
+ uint16 in_size, out_size;
+};
+
+
+static BOOL init_afs_acl(struct afs_acl *acl)
+{
+ ZERO_STRUCT(*acl);
+ acl->ctx = talloc_init("afs_acl");
+ if (acl->ctx == NULL) {
+ DEBUG(10, ("Could not init afs_acl"));
+ return False;
+ }
+ return True;
+}
+
+static void free_afs_acl(struct afs_acl *acl)
+{
+ if (acl->ctx != NULL)
+ talloc_destroy(acl->ctx);
+ acl->ctx = NULL;
+ acl->num_aces = 0;
+ acl->acelist = NULL;
+}
+
+static struct afs_ace *clone_afs_ace(TALLOC_CTX *mem_ctx, struct afs_ace *ace)
+{
+ struct afs_ace *result = TALLOC_P(mem_ctx, struct afs_ace);
+
+ if (result == NULL)
+ return NULL;
+
+ *result = *ace;
+
+ result->next = NULL;
+ result->name = talloc_strdup(mem_ctx, ace->name);
+
+ if (result->name == NULL) {
+ return NULL;
+ }
+
+ return result;
+}
+
+static struct afs_ace *new_afs_ace(TALLOC_CTX *mem_ctx,
+ BOOL positive,
+ const char *name, uint32 rights)
+{
+ DOM_SID sid;
+ enum SID_NAME_USE type;
+ struct afs_ace *result;
+
+ if (strcmp(name, "system:administrators") == 0) {
+
+ sid_copy(&sid, &global_sid_Builtin_Administrators);
+ type = SID_NAME_ALIAS;
+
+ } else if (strcmp(name, "system:anyuser") == 0) {
+
+ sid_copy(&sid, &global_sid_World);
+ type = SID_NAME_ALIAS;
+
+ } else if (strcmp(name, "system:authuser") == 0) {
+
+ sid_copy(&sid, &global_sid_Authenticated_Users);
+ type = SID_NAME_WKN_GRP;
+
+ } else if (strcmp(name, "system:backup") == 0) {
+
+ sid_copy(&sid, &global_sid_Builtin_Backup_Operators);
+ type = SID_NAME_ALIAS;
+
+ } else if (sidpts) {
+ /* All PTS users/groups are expressed as SIDs */
+
+ sid_copy(&sid, &global_sid_NULL);
+ type = SID_NAME_UNKNOWN;
+
+ if (string_to_sid(&sid, name)) {
+ fstring user, domain;
+ /* We have to find the type, look up the SID */
+ lookup_sid(&sid, domain, user, &type);
+ }
+
+ } else {
+
+ fstring domain, uname;
+ char *p;
+
+ p = strchr_m(name, lp_winbind_separator());
+ if (p != NULL) {
+ *p = '\\';
+ }
+
+ if (!lookup_name(name, LOOKUP_NAME_FULL,
+ domain, uname, &sid, &type)) {
+ DEBUG(10, ("Could not find AFS user %s\n", name));
+
+ sid_copy(&sid, &global_sid_NULL);
+ type = SID_NAME_UNKNOWN;
+
+ }
+ }
+
+ result = TALLOC_P(mem_ctx, struct afs_ace);
+
+ if (result == NULL) {
+ DEBUG(0, ("Could not talloc AFS ace\n"));
+ return NULL;
+ }
+
+ result->name = talloc_strdup(mem_ctx, name);
+ if (result->name == NULL) {
+ DEBUG(0, ("Could not talloc AFS ace name\n"));
+ return NULL;
+ }
+
+ result->sid = sid;
+ result->type = type;
+
+ result->positive = positive;
+ result->rights = rights;
+
+ return result;
+}
+
+static void add_afs_ace(struct afs_acl *acl,
+ BOOL positive,
+ const char *name, uint32 rights)
+{
+ struct afs_ace *ace;
+
+ for (ace = acl->acelist; ace != NULL; ace = ace->next) {
+ if ((ace->positive == positive) &&
+ (strequal(ace->name, name))) {
+ ace->rights |= rights;
+ return;
+ }
+ }
+
+ ace = new_afs_ace(acl->ctx, positive, name, rights);
+
+ ace->next = acl->acelist;
+ acl->acelist = ace;
+
+ acl->num_aces += 1;
+
+ DEBUG(10, ("add_afs_ace: Added %s entry for %s with rights %d\n",
+ ace->positive?"positive":"negative",
+ ace->name, ace->rights));
+
+ return;
+}
+
+/* AFS ACLs in string form are a long string of fields delimited with \n.
+ *
+ * First line: Number of positive entries
+ * Second line: Number of negative entries
+ * Third and following lines: The entries themselves
+ *
+ * An ACE is a line of two fields, delimited by \t.
+ *
+ * First field: Name
+ * Second field: Rights
+ */
+
+static BOOL parse_afs_acl(struct afs_acl *acl, const char *acl_str)
+{
+ int nplus, nminus;
+ int aces;
+
+ char str[MAXSIZE+1];
+ char *p = str;
+
+ strncpy(str, acl_str, MAXSIZE);
+
+ if (sscanf(p, "%d", &nplus) != 1)
+ return False;
+
+ DEBUG(10, ("Found %d positive entries\n", nplus));
+
+ if ((p = strchr(p, '\n')) == NULL)
+ return False;
+ p += 1;
+
+ if (sscanf(p, "%d", &nminus) != 1)
+ return False;
+
+ DEBUG(10, ("Found %d negative entries\n", nminus));
+
+ if ((p = strchr(p, '\n')) == NULL)
+ return False;
+ p += 1;
+
+ for (aces = nplus+nminus; aces > 0; aces--)
+ {
+
+ const char *namep;
+ fstring name;
+ uint32 rights;
+ char *space;
+
+ namep = p;
+
+ if ((p = strchr(p, '\t')) == NULL)
+ return False;
+ *p = '\0';
+ p += 1;
+
+ if (sscanf(p, "%d", &rights) != 1)
+ return False;
+
+ if ((p = strchr(p, '\n')) == NULL)
+ return False;
+ p += 1;
+
+ fstrcpy(name, namep);
+
+ while ((space = strchr_m(name, space_replacement)) != NULL)
+ *space = ' ';
+
+ add_afs_ace(acl, nplus>0, name, rights);
+
+ nplus -= 1;
+ }
+
+ return True;
+}
+
+static BOOL unparse_afs_acl(struct afs_acl *acl, char *acl_str)
+{
+ /* TODO: String length checks!!!! */
+
+ int positives = 0;
+ int negatives = 0;
+ fstring line;
+
+ *acl_str = 0;
+
+ struct afs_ace *ace = acl->acelist;
+
+ while (ace != NULL) {
+ if (ace->positive)
+ positives++;
+ else
+ negatives++;
+ ace = ace->next;
+ }
+
+ fstr_sprintf(line, "%d\n", positives);
+ safe_strcat(acl_str, line, MAXSIZE);
+
+ fstr_sprintf(line, "%d\n", negatives);
+ safe_strcat(acl_str, line, MAXSIZE);
+
+ ace = acl->acelist;
+
+ while (ace != NULL) {
+ fstr_sprintf(line, "%s\t%d\n", ace->name, ace->rights);
+ safe_strcat(acl_str, line, MAXSIZE);
+ ace = ace->next;
+ }
+ return True;
+}
+
+static uint32 afs_to_nt_file_rights(uint32 rights)
+{
+ uint32 result = 0;
+
+ if (rights & PRSFS_READ)
+ result |= FILE_READ_DATA | FILE_READ_EA |
+ FILE_EXECUTE | FILE_READ_ATTRIBUTES |
+ READ_CONTROL_ACCESS | SYNCHRONIZE_ACCESS;
+
+ if (rights & PRSFS_WRITE)
+ result |= FILE_WRITE_DATA | FILE_WRITE_ATTRIBUTES |
+ FILE_WRITE_EA | FILE_APPEND_DATA;
+
+ if (rights & PRSFS_LOCK)
+ result |= WRITE_OWNER_ACCESS;
+
+ if (rights & PRSFS_DELETE)
+ result |= DELETE_ACCESS;
+
+ return result;
+}
+
+static void afs_to_nt_dir_rights(uint32 afs_rights, uint32 *nt_rights,
+ uint8 *flag)
+{
+ *nt_rights = 0;
+ *flag = SEC_ACE_FLAG_OBJECT_INHERIT |
+ SEC_ACE_FLAG_CONTAINER_INHERIT;
+
+ if (afs_rights & PRSFS_INSERT)
+ *nt_rights |= FILE_ADD_FILE | FILE_ADD_SUBDIRECTORY;
+
+ if (afs_rights & PRSFS_LOOKUP)
+ *nt_rights |= FILE_READ_DATA | FILE_READ_EA |
+ FILE_EXECUTE | FILE_READ_ATTRIBUTES |
+ READ_CONTROL_ACCESS | SYNCHRONIZE_ACCESS;
+
+ if (afs_rights & PRSFS_WRITE)
+ *nt_rights |= FILE_WRITE_ATTRIBUTES | FILE_WRITE_DATA |
+ FILE_APPEND_DATA | FILE_WRITE_EA;
+
+ if ((afs_rights & (PRSFS_INSERT|PRSFS_LOOKUP|PRSFS_DELETE)) ==
+ (PRSFS_INSERT|PRSFS_LOOKUP|PRSFS_DELETE))
+ *nt_rights |= FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA |
+ GENERIC_WRITE_ACCESS;
+
+ if (afs_rights & PRSFS_DELETE)
+ *nt_rights |= DELETE_ACCESS;
+
+ if (afs_rights & PRSFS_ADMINISTER)
+ *nt_rights |= FILE_DELETE_CHILD | WRITE_DAC_ACCESS |
+ WRITE_OWNER_ACCESS;
+
+ if ( (afs_rights & PRSFS_LOOKUP) ==
+ (afs_rights & (PRSFS_LOOKUP|PRSFS_READ)) ) {
+ /* Only lookup right */
+ *flag = SEC_ACE_FLAG_CONTAINER_INHERIT;
+ }
+
+ return;
+}
+
+#define AFS_FILE_RIGHTS (PRSFS_READ|PRSFS_WRITE|PRSFS_LOCK)
+#define AFS_DIR_RIGHTS (PRSFS_INSERT|PRSFS_LOOKUP|PRSFS_DELETE|PRSFS_ADMINISTER)
+
+static void split_afs_acl(struct afs_acl *acl,
+ struct afs_acl *dir_acl,
+ struct afs_acl *file_acl)
+{
+ struct afs_ace *ace;
+
+ init_afs_acl(dir_acl);
+ init_afs_acl(file_acl);
+
+ for (ace = acl->acelist; ace != NULL; ace = ace->next) {
+ if (ace->rights & AFS_FILE_RIGHTS) {
+ add_afs_ace(file_acl, ace->positive, ace->name,
+ ace->rights & AFS_FILE_RIGHTS);
+ }
+
+ if (ace->rights & AFS_DIR_RIGHTS) {
+ add_afs_ace(dir_acl, ace->positive, ace->name,
+ ace->rights & AFS_DIR_RIGHTS);
+ }
+ }
+ return;
+}
+
+static BOOL same_principal(struct afs_ace *x, struct afs_ace *y)
+{
+ return ( (x->positive == y->positive) &&
+ (sid_compare(&x->sid, &y->sid) == 0) );
+}
+
+static void merge_afs_acls(struct afs_acl *dir_acl,
+ struct afs_acl *file_acl,
+ struct afs_acl *target)
+{
+ struct afs_ace *ace;
+
+ init_afs_acl(target);
+
+ for (ace = dir_acl->acelist; ace != NULL; ace = ace->next) {
+ struct afs_ace *file_ace;
+ BOOL found = False;
+
+ for (file_ace = file_acl->acelist;
+ file_ace != NULL;
+ file_ace = file_ace->next) {
+ if (!same_principal(ace, file_ace))
+ continue;
+
+ add_afs_ace(target, ace->positive, ace->name,
+ ace->rights | file_ace->rights);
+ found = True;
+ break;
+ }
+ if (!found)
+ add_afs_ace(target, ace->positive, ace->name,
+ ace->rights);
+ }
+
+ for (ace = file_acl->acelist; ace != NULL; ace = ace->next) {
+ struct afs_ace *dir_ace;
+ BOOL already_seen = False;
+
+ for (dir_ace = dir_acl->acelist;
+ dir_ace != NULL;
+ dir_ace = dir_ace->next) {
+ if (!same_principal(ace, dir_ace))
+ continue;
+ already_seen = True;
+ break;
+ }
+ if (!already_seen)
+ add_afs_ace(target, ace->positive, ace->name,
+ ace->rights);
+ }
+}
+
+#define PERMS_READ 0x001200a9
+#define PERMS_CHANGE 0x001301bf
+#define PERMS_FULL 0x001f01ff
+
+static struct static_dir_ace_mapping {
+ uint8 type;
+ uint8 flags;
+ uint32 mask;
+ uint32 afs_rights;
+} ace_mappings[] = {
+
+ /* Full control */
+ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT,
+ PERMS_FULL, 127 /* rlidwka */ },
+
+ /* Change (write) */
+ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT,
+ PERMS_CHANGE, 63 /* rlidwk */ },
+
+ /* Read (including list folder content) */
+ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT,
+ PERMS_READ, 9 /* rl */ },
+
+ /* Read without list folder content -- same as "l" */
+ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT,
+ 0x00120089, 8 /* l */ },
+
+ /* some stupid workaround for preventing fallbacks */
+ { 0, 0x3, 0x0012019F, 9 /* rl */ },
+ { 0, 0x13, PERMS_FULL, 127 /* full */ },
+
+ /* read, delete and execute access plus synchronize */
+ { 0, 0x3, 0x001300A9, 9 /* should be rdl, set to rl */},
+ /* classical read list */
+ { 0, 0x13, 0x001200A9, 9 /* rl */},
+ /* almost full control, no delete */
+ { 0, 0x13, PERMS_CHANGE, 63 /* rwidlk */},
+
+ /* List folder */
+ { 0, SEC_ACE_FLAG_CONTAINER_INHERIT,
+ PERMS_READ, 8 /* l */ },
+
+ /* FULL without inheritance -- in all cases here we also get
+ the corresponding INHERIT_ONLY ACE in the same ACL */
+ { 0, 0, PERMS_FULL, 127 /* rlidwka */ },
+
+ /* FULL inherit only -- counterpart to previous one */
+ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY,
+ PERMS_FULL | GENERIC_RIGHT_WRITE_ACCESS, 127 /* rlidwka */ },
+
+ /* CHANGE without inheritance -- in all cases here we also get
+ the corresponding INHERIT_ONLY ACE in the same ACL */
+ { 0, 0, PERMS_CHANGE, 63 /* rlidwk */ },
+
+ /* CHANGE inherit only -- counterpart to previous one */
+ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY,
+ PERMS_CHANGE | GENERIC_RIGHT_WRITE_ACCESS, 63 /* rlidwk */ },
+
+ /* End marker, hopefully there's no afs right 9999 :-) */
+ { 0, 0, 0, 9999 }
+};
+
+static uint32 nt_to_afs_dir_rights(const char *filename, const SEC_ACE *ace)
+{
+ uint32 result = 0;
+ uint32 rights = ace->info.mask;
+ uint8 flags = ace->flags;
+
+ struct static_dir_ace_mapping *m;
+
+ for (m = &ace_mappings[0]; m->afs_rights != 9999; m++) {
+ if ( (ace->type == m->type) &&
+ (ace->flags == m->flags) &&
+ (ace->info.mask == m->mask) )
+ return m->afs_rights;
+ }
+
+ DEBUG(1, ("AFSACL FALLBACK: 0x%X 0x%X 0x%X %s %X\n",
+ ace->type, ace->flags, ace->info.mask, filename, rights));
+
+ if (rights & (GENERIC_ALL_ACCESS|WRITE_DAC_ACCESS)) {
+ result |= PRSFS_READ | PRSFS_WRITE | PRSFS_INSERT |
+ PRSFS_LOOKUP | PRSFS_DELETE | PRSFS_LOCK |
+ PRSFS_ADMINISTER;
+ }
+
+ if (rights & (GENERIC_READ_ACCESS|FILE_READ_DATA)) {
+ result |= PRSFS_LOOKUP;
+ if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) {
+ result |= PRSFS_READ;
+ }
+ }
+
+ if (rights & (GENERIC_WRITE_ACCESS|FILE_WRITE_DATA)) {
+ result |= PRSFS_INSERT | PRSFS_DELETE;
+ if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) {
+ result |= PRSFS_WRITE | PRSFS_LOCK;
+ }
+ }
+
+ return result;
+}
+
+static uint32 nt_to_afs_file_rights(const char *filename, const SEC_ACE *ace)
+{
+ uint32 result = 0;
+ uint32 rights = ace->info.mask;
+
+ if (rights & (GENERIC_READ_ACCESS|FILE_READ_DATA)) {
+ result |= PRSFS_READ;
+ }
+
+ if (rights & (GENERIC_WRITE_ACCESS|FILE_WRITE_DATA)) {
+ result |= PRSFS_WRITE | PRSFS_LOCK;
+ }
+
+ return result;
+}
+
+static size_t afs_to_nt_acl(struct afs_acl *afs_acl,
+ struct files_struct *fsp,
+ uint32 security_info,
+ struct security_descriptor_info **ppdesc)
+{
+ SEC_ACE *nt_ace_list;
+ DOM_SID owner_sid, group_sid;
+ SEC_ACCESS mask;
+ SMB_STRUCT_STAT sbuf;
+ SEC_ACL *psa = NULL;
+ int good_aces;
+ size_t sd_size;
+ TALLOC_CTX *mem_ctx = main_loop_talloc_get();
+
+ struct afs_ace *afs_ace;
+
+ if (fsp->is_directory || fsp->fh->fd == -1) {
+ /* Get the stat struct for the owner info. */
+ if(SMB_VFS_STAT(fsp->conn,fsp->fsp_name, &sbuf) != 0) {
+ return 0;
+ }
+ } else {
+ if(SMB_VFS_FSTAT(fsp,fsp->fh->fd,&sbuf) != 0) {
+ return 0;
+ }
+ }
+
+ uid_to_sid(&owner_sid, sbuf.st_uid);
+ gid_to_sid(&group_sid, sbuf.st_gid);
+
+ nt_ace_list = TALLOC_ARRAY(mem_ctx, SEC_ACE, afs_acl->num_aces);
+
+ if (nt_ace_list == NULL)
+ return 0;
+
+ afs_ace = afs_acl->acelist;
+ good_aces = 0;
+
+ while (afs_ace != NULL) {
+ uint32 nt_rights;
+ uint8 flag = SEC_ACE_FLAG_OBJECT_INHERIT |
+ SEC_ACE_FLAG_CONTAINER_INHERIT;
+
+ if (afs_ace->type == SID_NAME_UNKNOWN) {
+ DEBUG(10, ("Ignoring unknown name %s\n",
+ afs_ace->name));
+ afs_ace = afs_ace->next;
+ continue;
+ }
+
+ if (fsp->is_directory)
+ afs_to_nt_dir_rights(afs_ace->rights, &nt_rights,
+ &flag);
+ else
+ nt_rights = afs_to_nt_file_rights(afs_ace->rights);
+
+ init_sec_access(&mask, nt_rights);
+ init_sec_ace(&nt_ace_list[good_aces++], &(afs_ace->sid),
+ SEC_ACE_TYPE_ACCESS_ALLOWED, mask, flag);
+ afs_ace = afs_ace->next;
+ }
+
+ psa = make_sec_acl(mem_ctx, NT4_ACL_REVISION,
+ good_aces, nt_ace_list);
+ if (psa == NULL)
+ return 0;
+
+
+ *ppdesc = make_sec_desc(mem_ctx, SEC_DESC_REVISION,
+ SEC_DESC_SELF_RELATIVE,
+ (security_info & OWNER_SECURITY_INFORMATION)
+ ? &owner_sid : NULL,
+ (security_info & GROUP_SECURITY_INFORMATION)
+ ? &group_sid : NULL,
+ NULL, psa, &sd_size);
+
+ return sd_size;
+}
+
+static BOOL mappable_sid(const DOM_SID *sid)
+{
+ DOM_SID domain_sid;
+
+ if (sid_compare(sid, &global_sid_Builtin_Administrators) == 0)
+ return True;
+
+ if (sid_compare(sid, &global_sid_World) == 0)
+ return True;
+
+ if (sid_compare(sid, &global_sid_Authenticated_Users) == 0)
+ return True;
+
+ if (sid_compare(sid, &global_sid_Builtin_Backup_Operators) == 0)
+ return True;
+
+ string_to_sid(&domain_sid, "S-1-5-21");
+
+ if (sid_compare_domain(sid, &domain_sid) == 0)
+ return True;
+
+ return False;
+}
+
+static BOOL nt_to_afs_acl(const char *filename,
+ uint32 security_info_sent,
+ struct security_descriptor_info *psd,
+ uint32 (*nt_to_afs_rights)(const char *filename,
+ const SEC_ACE *ace),
+ struct afs_acl *afs_acl)
+{
+ SEC_ACL *dacl;
+ int i;
+
+ /* Currently we *only* look at the dacl */
+
+ if (((security_info_sent & DACL_SECURITY_INFORMATION) == 0) ||
+ (psd->dacl == NULL))
+ return True;
+
+ if (!init_afs_acl(afs_acl))
+ return False;
+
+ dacl = psd->dacl;
+
+ for (i = 0; i < dacl->num_aces; i++) {
+ SEC_ACE *ace = &(dacl->ace[i]);
+ fstring dom_name;
+ fstring name;
+ enum SID_NAME_USE name_type;
+ char *p;
+
+ if (ace->type != SEC_ACE_TYPE_ACCESS_ALLOWED) {
+ /* First cut: Only positive ACEs */
+ return False;
+ }
+
+ if (!mappable_sid(&ace->trustee)) {
+ DEBUG(10, ("Ignoring unmappable SID %s\n",
+ sid_string_static(&ace->trustee)));
+ continue;
+ }
+
+ if (sid_compare(&ace->trustee,
+ &global_sid_Builtin_Administrators) == 0) {
+
+ fstrcpy(name, "system:administrators");
+
+ } else if (sid_compare(&ace->trustee,
+ &global_sid_World) == 0) {
+
+ fstrcpy(name, "system:anyuser");
+
+ } else if (sid_compare(&ace->trustee,
+ &global_sid_Authenticated_Users) == 0) {
+
+ fstrcpy(name, "system:authuser");
+
+ } else if (sid_compare(&ace->trustee,
+ &global_sid_Builtin_Backup_Operators)
+ == 0) {
+
+ fstrcpy(name, "system:backup");
+
+ } else {
+
+ if (!lookup_sid(&ace->trustee,
+ dom_name, name, &name_type)) {
+ DEBUG(1, ("AFSACL: Could not lookup SID %s on file %s\n",
+ sid_string_static(&ace->trustee), filename));
+ continue;
+ }
+
+ if ( (name_type == SID_NAME_USER) ||
+ (name_type == SID_NAME_DOM_GRP) ||
+ (name_type == SID_NAME_ALIAS) ) {
+ fstring only_username;
+ fstrcpy(only_username, name);
+ fstr_sprintf(name, "%s%s%s",
+ dom_name, lp_winbind_separator(),
+ only_username);
+ strlower_m(name);
+ }
+
+ if (sidpts) {
+ /* Expect all users/groups in pts as SIDs */
+ sid_to_string(name, &ace->trustee);
+ }
+ }
+
+ while ((p = strchr_m(name, ' ')) != NULL)
+ *p = space_replacement;
+
+ add_afs_ace(afs_acl, True, name,
+ nt_to_afs_rights(filename, ace));
+ }
+
+ return True;
+}
+
+static BOOL afs_get_afs_acl(char *filename, struct afs_acl *acl)
+{
+ struct afs_iob iob;
+
+ int ret;
+
+ char space[MAXSIZE];
+
+ DEBUG(5, ("afs_get_afs_acl: %s\n", filename));
+
+ iob.in_size = 0;
+ iob.out_size = MAXSIZE;
+ iob.in = iob.out = space;
+
+ ret = afs_syscall(AFSCALL_PIOCTL, filename, VIOCGETAL,
+ (char *)&iob, 0);
+
+ if (ret) {
+ DEBUG(1, ("got error from PIOCTL: %d\n", ret));
+ return False;
+ }
+
+ if (!init_afs_acl(acl))
+ return False;
+
+ if (!parse_afs_acl(acl, space)) {
+ DEBUG(1, ("Could not parse AFS acl\n"));
+ free_afs_acl(acl);
+ return False;
+ }
+
+ return True;
+}
+
+static size_t afs_get_nt_acl(struct files_struct *fsp, uint32 security_info,
+ struct security_descriptor_info **ppdesc)
+{
+ struct afs_acl acl;
+ size_t sd_size;
+
+ DEBUG(5, ("afs_get_nt_acl: %s\n", fsp->fsp_name));
+
+ sidpts = lp_parm_bool(SNUM(fsp->conn), "afsacl", "sidpts", False);
+
+ if (!afs_get_afs_acl(fsp->fsp_name, &acl)) {
+ return 0;
+ }
+
+ sd_size = afs_to_nt_acl(&acl, fsp, security_info, ppdesc);
+
+ free_afs_acl(&acl);
+
+ return sd_size;
+}
+
+/* For setting an AFS ACL we have to take care of the ACEs we could
+ * not properly map to SIDs. Merge all of them into the new ACL. */
+
+static void merge_unknown_aces(struct afs_acl *src, struct afs_acl *dst)
+{
+ struct afs_ace *ace;
+
+ for (ace = src->acelist; ace != NULL; ace = ace->next)
+ {
+ struct afs_ace *copy;
+
+ if (ace->type != SID_NAME_UNKNOWN) {
+ DEBUG(10, ("Not merging known ACE for %s\n",
+ ace->name));
+ continue;
+ }
+
+ DEBUG(10, ("Merging unknown ACE for %s\n", ace->name));
+
+ copy = clone_afs_ace(dst->ctx, ace);
+
+ if (copy == NULL) {
+ DEBUG(0, ("Could not clone ACE for %s\n", ace->name));
+ continue;
+ }
+
+ copy->next = dst->acelist;
+ dst->acelist = copy;
+ dst->num_aces += 1;
+ }
+}
+
+static BOOL afs_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
+ uint32 security_info_sent,
+ struct security_descriptor_info *psd)
+{
+ struct afs_acl old_afs_acl, new_afs_acl;
+ struct afs_acl dir_acl, file_acl;
+ char acl_string[2049];
+ struct afs_iob iob;
+ int ret = -1;
+ pstring name;
+ const char *fileacls;
+
+ fileacls = lp_parm_const_string(SNUM(handle->conn), "afsacl", "fileacls",
+ "yes");
+
+ sidpts = lp_parm_bool(SNUM(handle->conn), "afsacl", "sidpts", False);
+
+ ZERO_STRUCT(old_afs_acl);
+ ZERO_STRUCT(new_afs_acl);
+ ZERO_STRUCT(dir_acl);
+ ZERO_STRUCT(file_acl);
+
+ pstr_sprintf(name, fsp->fsp_name);
+
+ if (!fsp->is_directory) {
+ /* We need to get the name of the directory containing the
+ * file, this is where the AFS acls live */
+ char *p = strrchr(name, '/');
+ if (p != NULL) {
+ *p = '\0';
+ } else {
+ pstrcpy(name, ".");
+ }
+ }
+
+ if (!afs_get_afs_acl(name, &old_afs_acl)) {
+ DEBUG(3, ("Could not get old ACL of %s\n", fsp->fsp_name));
+ goto done;
+ }
+
+ split_afs_acl(&old_afs_acl, &dir_acl, &file_acl);
+
+ if (fsp->is_directory) {
+
+ if (!strequal(fileacls, "yes")) {
+ /* Throw away file acls, we depend on the
+ * inheritance ACEs that also give us file
+ * permissions */
+ free_afs_acl(&file_acl);
+ }
+
+ free_afs_acl(&dir_acl);
+ if (!nt_to_afs_acl(fsp->fsp_name, security_info_sent, psd,
+ nt_to_afs_dir_rights, &dir_acl))
+ goto done;
+ } else {
+ if (strequal(fileacls, "no")) {
+ ret = -1;
+ goto done;
+ }
+
+ if (strequal(fileacls, "ignore")) {
+ ret = 0;
+ goto done;
+ }
+
+ free_afs_acl(&file_acl);
+ if (!nt_to_afs_acl(fsp->fsp_name, security_info_sent, psd,
+ nt_to_afs_file_rights, &file_acl))
+ goto done;
+ }
+
+ merge_afs_acls(&dir_acl, &file_acl, &new_afs_acl);
+
+ merge_unknown_aces(&old_afs_acl, &new_afs_acl);
+
+ unparse_afs_acl(&new_afs_acl, acl_string);
+
+ iob.in = acl_string;
+ iob.in_size = 1+strlen(iob.in);
+ iob.out = NULL;
+ iob.out_size = 0;
+
+ DEBUG(10, ("trying to set acl '%s' on file %s\n", iob.in, name));
+
+ ret = afs_syscall(AFSCALL_PIOCTL, name, VIOCSETAL, (char *)&iob, 0);
+
+ if (ret != 0) {
+ DEBUG(10, ("VIOCSETAL returned %d\n", ret));
+ }
+
+ done:
+ free_afs_acl(&dir_acl);
+ free_afs_acl(&file_acl);
+ free_afs_acl(&old_afs_acl);
+ free_afs_acl(&new_afs_acl);
+
+ return (ret == 0);
+}
+
+static size_t afsacl_fget_nt_acl(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ int fd, uint32 security_info,
+ struct security_descriptor_info **ppdesc)
+{
+ return afs_get_nt_acl(fsp, security_info, ppdesc);
+}
+static size_t afsacl_get_nt_acl(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const char *name, uint32 security_info,
+ struct security_descriptor_info **ppdesc)
+{
+ return afs_get_nt_acl(fsp, security_info, ppdesc);
+}
+
+BOOL afsacl_fset_nt_acl(vfs_handle_struct *handle,
+ files_struct *fsp,
+ int fd, uint32 security_info_sent,
+ SEC_DESC *psd)
+{
+ return afs_set_nt_acl(handle, fsp, security_info_sent, psd);
+}
+
+BOOL afsacl_set_nt_acl(vfs_handle_struct *handle,
+ files_struct *fsp,
+ const char *name, uint32 security_info_sent,
+ SEC_DESC *psd)
+{
+ return afs_set_nt_acl(handle, fsp, security_info_sent, psd);
+}
+
+static int afsacl_connect(vfs_handle_struct *handle,
+ connection_struct *conn,
+ const char *service,
+ const char *user)
+{
+ char *spc;
+
+ spc = lp_parm_const_string(SNUM(handle->conn), "afsacl", "space", "%");
+
+ if (spc != NULL)
+ space_replacement = spc[0];
+
+ return SMB_VFS_NEXT_CONNECT(handle, conn, service, user);
+}
+
+/* VFS operations structure */
+
+static vfs_op_tuple afsacl_ops[] = {
+ {SMB_VFS_OP(afsacl_connect), SMB_VFS_OP_CONNECT,
+ SMB_VFS_LAYER_TRANSPARENT},
+ {SMB_VFS_OP(afsacl_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL,
+ SMB_VFS_LAYER_TRANSPARENT},
+ {SMB_VFS_OP(afsacl_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
+ SMB_VFS_LAYER_TRANSPARENT},
+ {SMB_VFS_OP(afsacl_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL,
+ SMB_VFS_LAYER_TRANSPARENT},
+ {SMB_VFS_OP(afsacl_set_nt_acl), SMB_VFS_OP_SET_NT_ACL,
+ SMB_VFS_LAYER_TRANSPARENT},
+ {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
+};
+
+NTSTATUS vfs_afsacl_init(void)
+{
+ return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "afsacl",
+ afsacl_ops);
+}
projects / samba / blobdiff