]> wimlib.net Git - wimlib/blobdiff - src/security.c
Win32: Minor code/comment fixes
[wimlib] / src / security.c
index 2e60aa53a33c496a09b24fc0ec6d07c96c35bf31..94660de85f28301eb47589916ea7e93d01fa99ef 100644 (file)
 #include "buffer_io.h"
 #include "security.h"
 
-
-#define        SECURITY_DESCRIPTOR_REVISION    1
-#define        SECURITY_DESCRIPTOR_REVISION1   1
-
-/* inherit AceFlags */
-#define        OBJECT_INHERIT_ACE              0x01
-#define        CONTAINER_INHERIT_ACE           0x02
-#define        NO_PROPAGATE_INHERIT_ACE        0x04
-#define        INHERIT_ONLY_ACE                0x08
-#define        INHERITED_ACE                   0x10
-#define        VALID_INHERIT_FLAGS             0x1F
-
-#define SE_OWNER_DEFAULTED             0x00000001
-#define SE_GROUP_DEFAULTED             0x00000002
-#define SE_DACL_PRESENT                        0x00000004
-#define SE_DACL_DEFAULTED              0x00000008
-#define SE_SACL_PRESENT                        0x00000010
-#define SE_SACL_DEFAULTED              0x00000020
-#define SE_DACL_AUTO_INHERIT_REQ       0x00000100
-#define SE_SACL_AUTO_INHERIT_REQ       0x00000200
-#define SE_DACL_AUTO_INHERITED         0x00000400
-#define SE_SACL_AUTO_INHERITED         0x00000800
-#define SE_DACL_PROTECTED              0x00001000
-#define SE_SACL_PROTECTED              0x00002000
-#define SE_RM_CONTROL_VALID            0x00004000
-#define SE_SELF_RELATIVE               0x00008000
-
-/* Flags in access control entries */
-#define DELETE                     0x00010000
-#define READ_CONTROL               0x00020000
-#define WRITE_DAC                  0x00040000
-#define WRITE_OWNER                0x00080000
-#define SYNCHRONIZE                0x00100000
-#define STANDARD_RIGHTS_REQUIRED   0x000f0000
-
-#define STANDARD_RIGHTS_READ       READ_CONTROL
-#define STANDARD_RIGHTS_WRITE      READ_CONTROL
-#define STANDARD_RIGHTS_EXECUTE    READ_CONTROL
-
-#define STANDARD_RIGHTS_ALL        0x001f0000
-
-#define SPECIFIC_RIGHTS_ALL        0x0000ffff
-
-#define GENERIC_READ               0x80000000
-#define GENERIC_WRITE              0x40000000
-#define GENERIC_EXECUTE            0x20000000
-#define GENERIC_ALL                0x10000000
-
-#define MAXIMUM_ALLOWED            0x02000000
-#define ACCESS_SYSTEM_SECURITY     0x01000000
-
-#define EVENT_QUERY_STATE          0x0001
-#define EVENT_MODIFY_STATE         0x0002
-#define EVENT_ALL_ACCESS           (STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|0x3)
-
-#define SEMAPHORE_MODIFY_STATE     0x0002
-#define SEMAPHORE_ALL_ACCESS       (STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|0x3)
-
-#define MUTEX_MODIFY_STATE         0x0001
-#define MUTEX_ALL_ACCESS           (STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|0x1)
-
-#define JOB_OBJECT_ASSIGN_PROCESS           0x0001
-#define JOB_OBJECT_SET_ATTRIBUTES           0x0002
-#define JOB_OBJECT_QUERY                    0x0004
-#define JOB_OBJECT_TERMINATE                0x0008
-#define JOB_OBJECT_SET_SECURITY_ATTRIBUTES  0x0010
-#define JOB_OBJECT_ALL_ACCESS               (STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|0x1f)
-
-#define TIMER_QUERY_STATE          0x0001
-#define TIMER_MODIFY_STATE         0x0002
-#define TIMER_ALL_ACCESS           (STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|0x3)
-
-#define PROCESS_TERMINATE          0x0001
-#define PROCESS_CREATE_THREAD      0x0002
-#define PROCESS_VM_OPERATION       0x0008
-#define PROCESS_VM_READ            0x0010
-#define PROCESS_VM_WRITE           0x0020
-#define PROCESS_DUP_HANDLE         0x0040
-#define PROCESS_CREATE_PROCESS     0x0080
-#define PROCESS_SET_QUOTA          0x0100
-#define PROCESS_SET_INFORMATION    0x0200
-#define PROCESS_QUERY_INFORMATION  0x0400
-#define PROCESS_SUSPEND_RESUME     0x0800
-#define PROCESS_QUERY_LIMITED_INFORMATION 0x1000
-#define PROCESS_ALL_ACCESS         (STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|0xfff)
-
-#define THREAD_TERMINATE           0x0001
-#define THREAD_SUSPEND_RESUME      0x0002
-#define THREAD_GET_CONTEXT         0x0008
-#define THREAD_SET_CONTEXT         0x0010
-#define THREAD_SET_INFORMATION     0x0020
-#define THREAD_QUERY_INFORMATION   0x0040
-#define THREAD_SET_THREAD_TOKEN    0x0080
-#define THREAD_IMPERSONATE         0x0100
-#define THREAD_DIRECT_IMPERSONATION 0x0200
-#define THREAD_ALL_ACCESS          (STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|0x3ff)
-
-#define THREAD_BASE_PRIORITY_LOWRT  15
-#define THREAD_BASE_PRIORITY_MAX    2
-#define THREAD_BASE_PRIORITY_MIN   -2
-#define THREAD_BASE_PRIORITY_IDLE  -15
-
-/* predefined authority values for SID's (security identifiers) */
-enum sid_authority_value {
-       SECURITY_NULL_SID_AUTHORITY    = 0,
-       SECURITY_WORLD_SID_AUTHORITY   = 1,
-       SECURITY_LOCAL_SID_AUTHORITY   = 2,
-       SECURITY_CREATOR_SID_AUTHORITY = 3,
-       SECURITY_NON_UNIQUE_AUTHORITY  = 4,
-       SECURITY_NT_AUTHORITY          = 5,
-};
-
-/* local administrators group */
-#define SECURITY_BUILTIN_DOMAIN_RID 32
-#define DOMAIN_ALIAS_RID_ADMINS     544
-
-/* See ACEHeader. */
-enum ace_type {
-       ACCESS_ALLOWED_ACE_TYPE = 0,
-       ACCESS_DENIED_ACE_TYPE  = 1,
-       SYSTEM_AUDIT_ACE_TYPE   = 2,
-};
-
 /* At the start of each type of access control entry.  */
 typedef struct {
        /* enum ace_type, specifies what type of ACE this is.  */
@@ -255,8 +132,12 @@ typedef struct {
  * entries anyway; however this ensures that that the security descriptors pass
  * the validation in libntfs-3g.
  */
-static void empty_sacl_fixup(u8 *descr, u64 *size_p)
+static void
+empty_sacl_fixup(u8 *descr, u64 *size_p)
 {
+       /* No-op if no NTFS-3g support, or if NTFS-3g is version 2013 or later
+        * */
+#if defined(WITH_NTFS_3G) && !defined(HAVE_NTFS_MNT_RDONLY)
        if (*size_p >= sizeof(SecurityDescriptor)) {
                SecurityDescriptor *sd = (SecurityDescriptor*)descr;
                u32 sacl_offset = le32_to_cpu(sd->sacl_offset);
@@ -265,6 +146,7 @@ static void empty_sacl_fixup(u8 *descr, u64 *size_p)
                        *size_p -= sizeof(ACL);
                }
        }
+#endif
 }
 
 /*
@@ -281,8 +163,9 @@ static void empty_sacl_fixup(u8 *descr, u64 *size_p)
  * Note: There is no `offset' argument because the security data is located at
  * the beginning of the metadata resource.
  */
-int read_security_data(const u8 metadata_resource[], u64 metadata_resource_len,
-                      struct wim_security_data **sd_p)
+int
+read_security_data(const u8 metadata_resource[], u64 metadata_resource_len,
+                  struct wim_security_data **sd_p)
 {
        struct wim_security_data *sd;
        const u8 *p;
@@ -431,7 +314,8 @@ out_free_sd:
 /*
  * Writes security data to an in-memory buffer.
  */
-u8 *write_security_data(const struct wim_security_data *sd, u8 *p)
+u8 *
+write_security_data(const struct wim_security_data *sd, u8 *p)
 {
        DEBUG("Writing security data (total_length = %"PRIu32", num_entries "
              "= %"PRIu32")", sd->total_length, sd->num_entries);
@@ -455,95 +339,102 @@ u8 *write_security_data(const struct wim_security_data *sd, u8 *p)
        return p;
 }
 
-static void print_acl(const u8 *p, const char *type)
+static void
+print_acl(const void *p, const tchar *type)
 {
-       const ACL *acl = (const ACL*)p;
+       const ACL *acl = p;
        u8 revision = acl->revision;
        u16 acl_size = le16_to_cpu(acl->acl_size);
        u16 ace_count = le16_to_cpu(acl->ace_count);
-       printf("    [%s ACL]\n", type);
-       printf("    Revision = %u\n", revision);
-       printf("    ACL Size = %u\n", acl_size);
-       printf("    ACE Count = %u\n", ace_count);
+       tprintf(T("    [%"TS" ACL]\n"), type);
+       tprintf(T("    Revision = %u\n"), revision);
+       tprintf(T("    ACL Size = %u\n"), acl_size);
+       tprintf(T("    ACE Count = %u\n"), ace_count);
 
        p += sizeof(ACL);
        for (u16 i = 0; i < ace_count; i++) {
-               const ACEHeader *hdr = (const ACEHeader*)p;
-               printf("        [ACE]\n");
-               printf("        ACE type  = %d\n", hdr->type);
-               printf("        ACE flags = 0x%x\n", hdr->flags);
-               printf("        ACE size  = %u\n", hdr->size);
+               const ACEHeader *hdr = p;
+               tprintf(T("        [ACE]\n"));
+               tprintf(T("        ACE type  = %d\n"), hdr->type);
+               tprintf(T("        ACE flags = 0x%x\n"), hdr->flags);
+               tprintf(T("        ACE size  = %u\n"), hdr->size);
                const AccessAllowedACE *aaa = (const AccessAllowedACE*)hdr;
-               printf("        ACE mask = %x\n", le32_to_cpu(aaa->mask));
-               printf("        SID start = %u\n", le32_to_cpu(aaa->sid_start));
+               tprintf(T("        ACE mask = %x\n"), le32_to_cpu(aaa->mask));
+               tprintf(T("        SID start = %u\n"), le32_to_cpu(aaa->sid_start));
                p += hdr->size;
        }
-       putchar('\n');
+       tputchar(T('\n'));
 }
 
-static void print_sid(const u8 *p, const char *type)
+static void
+print_sid(const void *p, const tchar *type)
 {
-       const SID *sid = (const SID*)p;
-       printf("    [%s SID]\n", type);
-       printf("    Revision = %u\n", sid->revision);
-       printf("    Subauthority count = %u\n", sid->sub_authority_count);
-       printf("    Identifier authority = ");
+       const SID *sid = p;
+       tprintf(T("    [%"TS" SID]\n"), type);
+       tprintf(T("    Revision = %u\n"), sid->revision);
+       tprintf(T("    Subauthority count = %u\n"), sid->sub_authority_count);
+       tprintf(T("    Identifier authority = "));
        print_byte_field(sid->identifier_authority,
-                        sizeof(sid->identifier_authority));
-       putchar('\n');
-       for (u8 i = 0; i < sid->sub_authority_count; i++)
-               printf("    Subauthority %u = %u\n",
-                      i, le32_to_cpu(sid->sub_authority[i]));
-       putchar('\n');
+                        sizeof(sid->identifier_authority), stdout);
+       tputchar(T('\n'));
+       for (u8 i = 0; i < sid->sub_authority_count; i++) {
+               tprintf(T("    Subauthority %u = %u\n"),
+                       i, le32_to_cpu(sid->sub_authority[i]));
+       }
+       tputchar(T('\n'));
 }
 
-static void print_security_descriptor(const u8 *p, u64 size)
+static void
+print_security_descriptor(const void *p, u64 size)
 {
-       const SecurityDescriptor *sd = (const SecurityDescriptor*)p;
+       const SecurityDescriptor *sd = p;
+
        u8 revision      = sd->revision;
        u16 control      = le16_to_cpu(sd->security_descriptor_control);
        u32 owner_offset = le32_to_cpu(sd->owner_offset);
        u32 group_offset = le32_to_cpu(sd->group_offset);
        u32 sacl_offset  = le32_to_cpu(sd->sacl_offset);
        u32 dacl_offset  = le32_to_cpu(sd->dacl_offset);
-       printf("Revision = %u\n", revision);
-       printf("Security Descriptor Control = %#x\n", control);
-       printf("Owner offset = %u\n", owner_offset);
-       printf("Group offset = %u\n", group_offset);
-       printf("System ACL offset = %u\n", sacl_offset);
-       printf("Discretionary ACL offset = %u\n", dacl_offset);
+       tprintf(T("Revision = %u\n"), revision);
+       tprintf(T("Security Descriptor Control = %#x\n"), control);
+       tprintf(T("Owner offset = %u\n"), owner_offset);
+       tprintf(T("Group offset = %u\n"), group_offset);
+       tprintf(T("System ACL offset = %u\n"), sacl_offset);
+       tprintf(T("Discretionary ACL offset = %u\n"), dacl_offset);
 
        if (sd->owner_offset != 0)
-               print_sid(p + owner_offset, "Owner");
+               print_sid(p + owner_offset, T("Owner"));
        if (sd->group_offset != 0)
-               print_sid(p + group_offset, "Group");
+               print_sid(p + group_offset, T("Group"));
        if (sd->sacl_offset != 0)
-               print_acl(p + sacl_offset, "System");
+               print_acl(p + sacl_offset, T("System"));
        if (sd->dacl_offset != 0)
-               print_acl(p + dacl_offset, "Discretionary");
+               print_acl(p + dacl_offset, T("Discretionary"));
 }
 
 /*
  * Prints the security data for a WIM file.
  */
-void print_security_data(const struct wim_security_data *sd)
+void
+print_security_data(const struct wim_security_data *sd)
 {
        wimlib_assert(sd != NULL);
 
-       puts("[SECURITY DATA]");
-       printf("Length            = %"PRIu32" bytes\n", sd->total_length);
-       printf("Number of Entries = %"PRIu32"\n", sd->num_entries);
+       tputs(T("[SECURITY DATA]"));
+       tprintf(T("Length            = %"PRIu32" bytes\n"), sd->total_length);
+       tprintf(T("Number of Entries = %"PRIu32"\n"), sd->num_entries);
 
        for (u32 i = 0; i < sd->num_entries; i++) {
-               printf("[SecurityDescriptor %"PRIu32", length = %"PRIu64"]\n",
-                      i, sd->sizes[i]);
+               tprintf(T("[SecurityDescriptor %"PRIu32", length = %"PRIu64"]\n"),
+                       i, sd->sizes[i]);
                print_security_descriptor(sd->descriptors[i], sd->sizes[i]);
-               putchar('\n');
+               tputchar(T('\n'));
        }
-       putchar('\n');
+       tputchar(T('\n'));
 }
 
-void free_security_data(struct wim_security_data *sd)
+void
+free_security_data(struct wim_security_data *sd)
 {
        if (sd) {
                wimlib_assert(sd->refcnt != 0);
@@ -560,16 +451,14 @@ void free_security_data(struct wim_security_data *sd)
        }
 }
 
-/* The security tree stuff is only needed when NTFS capture is supported, either
- * through NTFS-3G or through a native Windows build. */
-#if defined(WITH_NTFS_3G) || defined(__WIN32__)
 struct sd_node {
        int security_id;
        u8 hash[SHA1_HASH_SIZE];
        struct rb_node rb_node;
 };
 
-static void free_sd_tree(struct rb_node *node)
+static void
+free_sd_tree(struct rb_node *node)
 {
        if (node) {
                free_sd_tree(node->rb_left);
@@ -579,13 +468,15 @@ static void free_sd_tree(struct rb_node *node)
 }
 
 /* Frees a security descriptor index set. */
-void destroy_sd_set(struct sd_set *sd_set)
+void
+destroy_sd_set(struct sd_set *sd_set)
 {
        free_sd_tree(sd_set->rb_root.rb_node);
 }
 
 /* Inserts a a new node into the security descriptor index tree. */
-static void insert_sd_node(struct sd_set *set, struct sd_node *new)
+static void
+insert_sd_node(struct sd_set *set, struct sd_node *new)
 {
        struct rb_root *root = &set->rb_root;
        struct rb_node **p = &(root->rb_node);
@@ -609,7 +500,8 @@ static void insert_sd_node(struct sd_set *set, struct sd_node *new)
 
 /* Returns the index of the security descriptor having a SHA1 message digest of
  * @hash.  If not found, return -1. */
-int lookup_sd(struct sd_set *set, const u8 hash[SHA1_HASH_SIZE])
+int
+lookup_sd(struct sd_set *set, const u8 hash[SHA1_HASH_SIZE])
 {
        struct rb_node *node = set->rb_root.rb_node;
 
@@ -633,8 +525,8 @@ int lookup_sd(struct sd_set *set, const u8 hash[SHA1_HASH_SIZE])
  * the security ID for it.  If a new security descriptor cannot be allocated,
  * return -1.
  */
-int sd_set_add_sd(struct sd_set *sd_set, const char descriptor[],
-                 size_t size)
+int
+sd_set_add_sd(struct sd_set *sd_set, const char descriptor[], size_t size)
 {
        u8 hash[SHA1_HASH_SIZE];
        int security_id;
@@ -664,6 +556,9 @@ int sd_set_add_sd(struct sd_set *sd_set, const char descriptor[],
        new->security_id = sd->num_entries;
        copy_hash(new->hash, hash);
 
+       /* There typically are only a few dozen security descriptors in a
+        * directory tree, so expanding the array of security descriptors by
+        * only 1 extra space each time should not be a problem. */
        descriptors = REALLOC(sd->descriptors,
                              (sd->num_entries + 1) * sizeof(sd->descriptors[0]));
        if (!descriptors)
@@ -688,4 +583,3 @@ out_free_node:
 out:
        return -1;
 }
-#endif /* WITH_NTFS_3G || __WIN32__ */