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-rw-r--r--source4/lib/registry/patchfile.c416
1 files changed, 416 insertions, 0 deletions
diff --git a/source4/lib/registry/patchfile.c b/source4/lib/registry/patchfile.c
new file mode 100644
index 0000000000..cdf35c7b70
--- /dev/null
+++ b/source4/lib/registry/patchfile.c
@@ -0,0 +1,416 @@
+/*
+ Unix SMB/CIFS implementation.
+ Reading .REG files
+
+ Copyright (C) Jelmer Vernooij 2004
+
+ 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"
+#include "dynconfig.h"
+#include "lib/registry/registry.h"
+#include "lib/cmdline/popt_common.h"
+#include "system/filesys.h"
+
+#define DEFAULT_IDENT_STRING "SAMBA4 REGISTRY"
+
+static struct reg_diff_key *diff_find_add_key(struct reg_diff *diff, const char *path)
+{
+ int i;
+
+ for (i = 0; diff->numkeys; i++) {
+ if (!strcasecmp(diff->keys[i].name, path))
+ return &diff->keys[i];
+ }
+
+ diff->keys = talloc_realloc(diff, diff->keys, struct reg_diff_key, diff->numkeys+2);
+ diff->keys[diff->numkeys].name = talloc_strdup(diff->keys, path);
+ diff->keys[diff->numkeys].changetype = REG_DIFF_CHANGE_KEY;
+ diff->keys[diff->numkeys].numvalues = 0;
+ diff->keys[diff->numkeys].values = NULL;
+
+ diff->numkeys++;
+ return NULL;
+}
+
+/*
+ * Generate difference between two keys
+ */
+static WERROR reg_generate_diff_key(struct reg_diff *diff, struct registry_key *oldkey, struct registry_key *newkey)
+{
+ int i;
+ struct registry_key *t1, *t2;
+ struct registry_value *v1, *v2;
+ WERROR error1, error2;
+ TALLOC_CTX *mem_ctx = talloc_init("writediff");
+
+ /* Subkeys that were deleted */
+ for(i = 0; W_ERROR_IS_OK(error1 = reg_key_get_subkey_by_index(mem_ctx, oldkey, i, &t1)); i++) {
+ error2 = reg_key_get_subkey_by_name(mem_ctx, newkey, t1->name, &t2);
+
+ if (W_ERROR_IS_OK(error2))
+ continue;
+
+ if (!W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
+ DEBUG(0, ("Error occured while getting subkey by name: %d\n", W_ERROR_V(error2)));
+ return error2;
+ }
+
+ /* newkey didn't have such a subkey, add del diff */
+ diff->keys = talloc_realloc(diff, diff->keys, struct reg_diff_key, diff->numkeys+2);
+ diff->keys[diff->numkeys].name = talloc_strdup(diff->keys, t1->path);
+ diff->keys[diff->numkeys].changetype = REG_DIFF_DEL_KEY;
+ diff->numkeys++;
+ }
+
+ if(!W_ERROR_EQUAL(error1, WERR_NO_MORE_ITEMS)) {
+ DEBUG(0, ("Error occured while getting subkey by index: %d\n", W_ERROR_V(error1)));
+ talloc_free(mem_ctx);
+ return error1;
+ }
+
+ /* Subkeys that were added */
+ for(i = 0; W_ERROR_IS_OK(error1 = reg_key_get_subkey_by_index(mem_ctx, newkey, i, &t1)); i++) {
+ error2 = reg_key_get_subkey_by_name(mem_ctx, oldkey, t1->name, &t2);
+
+ if (W_ERROR_IS_OK(error2))
+ continue;
+
+ if (!W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
+ DEBUG(0, ("Error occured while getting subkey by name: %d\n", W_ERROR_V(error2)));
+ return error2;
+ }
+
+ /* oldkey didn't have such a subkey, add add diff */
+ diff->keys = talloc_realloc(diff, diff->keys, struct reg_diff_key, diff->numkeys+2);
+ diff->keys[diff->numkeys].name = talloc_strdup(diff->keys, t1->path);
+ diff->keys[diff->numkeys].changetype = REG_DIFF_CHANGE_KEY;
+ diff->keys[diff->numkeys].numvalues = 0;
+ diff->keys[diff->numkeys].values = NULL;
+ diff->numkeys++;
+
+ reg_generate_diff_key(diff, t1, t2);
+ }
+
+ if(!W_ERROR_EQUAL(error1, WERR_NO_MORE_ITEMS)) {
+ DEBUG(0, ("Error occured while getting subkey by index: %d\n", W_ERROR_V(error1)));
+ talloc_free(mem_ctx);
+ return error1;
+ }
+
+ /* Values that were changed */
+ for(i = 0; W_ERROR_IS_OK(error1 = reg_key_get_value_by_index(mem_ctx, newkey, i, &v1)); i++) {
+ struct reg_diff_key *thiskey = NULL;
+ error2 = reg_key_get_value_by_name(mem_ctx, oldkey, v1->name, &v2);
+
+ if(!W_ERROR_IS_OK(error2) &&
+ !W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
+ DEBUG(0, ("Error occured while getting value by name: %d\n", W_ERROR_V(error2)));
+ return error2;
+ }
+
+ if (W_ERROR_IS_OK(error2) && data_blob_equal(&v1->data, &v2->data))
+ continue;
+
+ thiskey = diff_find_add_key(diff, oldkey->path);
+ thiskey->values = talloc_realloc(diff, thiskey->values, struct reg_diff_value, thiskey->numvalues+2);
+ thiskey->values[thiskey->numvalues].name = talloc_strdup(thiskey->values, v1->name);
+ thiskey->values[thiskey->numvalues].type = v2->data_type;
+ thiskey->values[thiskey->numvalues].changetype = REG_DIFF_SET_VAL;
+ thiskey->values[thiskey->numvalues].data = data_blob_dup_talloc(thiskey->values, &v2->data);
+ thiskey->numvalues++;
+ }
+
+ if(!W_ERROR_EQUAL(error1, WERR_NO_MORE_ITEMS)) {
+ DEBUG(0, ("Error occured while getting value by index: %d\n", W_ERROR_V(error1)));
+ talloc_free(mem_ctx);
+ return error1;
+ }
+
+ /* Values that were deleted */
+ for(i = 0; W_ERROR_IS_OK(error1 = reg_key_get_value_by_index(mem_ctx, oldkey, i, &v1)); i++) {
+ struct reg_diff_key *thiskey = NULL;
+ error2 = reg_key_get_value_by_name(mem_ctx, newkey, v1->name, &v2);
+
+ if (W_ERROR_IS_OK(error2))
+ continue;
+
+ if (!W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
+ DEBUG(0, ("Error occured while getting value by name: %d\n", W_ERROR_V(error2)));
+ return error2;
+ }
+
+ thiskey = diff_find_add_key(diff, oldkey->path);
+ thiskey->values = talloc_realloc(diff, thiskey->values, struct reg_diff_value, thiskey->numvalues+2);
+ thiskey->values[thiskey->numvalues].name = talloc_strdup(thiskey->values, v1->name);
+ thiskey->values[thiskey->numvalues].changetype = REG_DIFF_DEL_VAL;
+ thiskey->numvalues++;
+ }
+
+ if(!W_ERROR_EQUAL(error1, WERR_NO_MORE_ITEMS)) {
+ DEBUG(0, ("Error occured while getting value by index: %d\n", W_ERROR_V(error1)));
+ talloc_free(mem_ctx);
+ return error1;
+ }
+
+ talloc_free(mem_ctx);
+ return WERR_OK;
+}
+
+/*
+ * Generate diff between two registry contexts
+ */
+struct reg_diff *reg_generate_diff(TALLOC_CTX *mem_ctx, struct registry_context *ctx1, struct registry_context *ctx2)
+{
+ struct reg_diff *diff = talloc_zero(mem_ctx, struct reg_diff);
+ int i;
+ WERROR error;
+
+ for(i = HKEY_CLASSES_ROOT; i <= HKEY_PERFORMANCE_NLSTEXT; i++) {
+ struct registry_key *r1, *r2;
+ error = reg_get_predefined_key(ctx1, i, &r1);
+ if (!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Unable to open hive %s for backend 1\n", reg_get_predef_name(i)));
+ continue;
+ }
+
+ error = reg_get_predefined_key(ctx2, i, &r2);
+ if (!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Unable to open hive %s for backend 2\n", reg_get_predef_name(i)));
+ continue;
+ }
+
+ reg_generate_diff_key(diff, r1, r2);
+ }
+
+ return diff;
+}
+
+/*
+ * Save registry diff
+ */
+WERROR reg_diff_save(const struct reg_diff *diff, const char *filename)
+{
+ int xf, i, j;
+
+ if (filename) {
+ xf = open(filename, O_CREAT, 0755);
+ if (xf == -1) {
+ DEBUG(0, ("Unable to open %s\n", filename));
+ return WERR_BADFILE;
+ }
+ } else
+ xf = STDIN_FILENO;
+
+ fdprintf(xf, "%s\n\n", diff->format?diff->format:DEFAULT_IDENT_STRING);
+
+ for (i = 0; i < diff->numkeys; i++) {
+ if (diff->keys[i].changetype == REG_DIFF_DEL_KEY) {
+ fdprintf(xf, "-%s\n\n", diff->keys[i].name);
+ continue;
+ }
+
+ fdprintf(xf, "[%s]\n", diff->keys[i].name);
+
+ for (j = 0; j < diff->keys[i].numvalues; j++) {
+ fdprintf(xf, "\"%s\"=", diff->keys[i].values[j].name);
+ switch (diff->keys[i].values[j].changetype) {
+ case REG_DIFF_DEL_VAL:
+ fdprintf(xf, "-\n");
+ break;
+ case REG_DIFF_SET_VAL:
+ fdprintf(xf, "%s:%s\n",
+ str_regtype(diff->keys[i].values[j].type),
+ reg_val_data_string(NULL,
+ diff->keys[i].values[j].type,
+ &diff->keys[i].values[j].data));
+ break;
+ }
+ }
+
+ fdprintf(xf, "\n");
+ }
+
+ close(xf);
+
+ return WERR_OK;
+}
+
+/*
+ * Load diff file
+ */
+struct reg_diff *reg_diff_load(TALLOC_CTX *ctx, const char *fn)
+{
+ struct reg_diff *diff;
+ int fd;
+ char *line, *p, *q;
+ struct reg_diff_key *curkey;
+ struct reg_diff_value *curval;
+
+ fd = open(fn, O_RDONLY, 0);
+ if (fd == -1) {
+ DEBUG(0, ("Error opening registry patch file `%s'\n", fn));
+ return NULL;
+ }
+
+ diff = talloc_zero(ctx, struct reg_diff);
+ if (diff == NULL) {
+ close(fd);
+ return NULL;
+ }
+
+ diff->format = afdgets(fd, diff, 0);
+ if (!diff->format) {
+ talloc_free(diff);
+ close(fd);
+ return NULL;
+ }
+
+ while ((line = afdgets(fd, diff, 0))) {
+ /* Ignore comments and empty lines */
+ if (strlen(line) == 0 || line[0] == ';') {
+ curkey = NULL;
+ talloc_free(line);
+ continue;
+ }
+
+ /* Start of key */
+ if (line[0] == '[') {
+ p = strchr_m(line, ']');
+ if (p[strlen(p)-2] != ']') {
+ DEBUG(0, ("Malformed line\n"));
+ return NULL;
+ }
+ diff->keys = talloc_realloc(diff, diff->keys, struct reg_diff_key, diff->numkeys+2);
+ diff->keys[diff->numkeys].name = talloc_strndup(diff->keys, line+1, strlen(line)-2);
+ diff->keys[diff->numkeys].changetype = REG_DIFF_CHANGE_KEY;
+ diff->keys[diff->numkeys].numvalues = 0;
+ diff->keys[diff->numkeys].values = NULL;
+ curkey = &diff->keys[diff->numkeys];
+ diff->numkeys++;
+ talloc_free(line);
+ continue;
+ }
+
+ /* Deleting key */
+ if (line[0] == '-') {
+ diff->keys = talloc_realloc(diff, diff->keys, struct reg_diff_key, diff->numkeys+2);
+ diff->keys[diff->numkeys].name = talloc_strdup(diff->keys, line+1);
+ diff->keys[diff->numkeys].changetype = REG_DIFF_DEL_KEY;
+ diff->numkeys++;
+ talloc_free(line);
+ continue;
+ }
+
+ /* Deleting/Changing value */
+ p = strchr_m(line, '=');
+ if (p == NULL) {
+ DEBUG(0, ("Malformed line\n"));
+ talloc_free(line);
+ continue;
+ }
+
+ *p = '\0'; p++;
+
+ if (curkey == NULL) {
+ DEBUG(0, ("Value change without key\n"));
+ talloc_free(line);
+ continue;
+ }
+
+ curkey->values = talloc_realloc(diff->keys, curkey->values, struct reg_diff_value, curkey->numvalues+2);
+ curval = &curkey->values[curkey->numvalues];
+ curkey->numvalues++;
+ curval->name = talloc_strdup(curkey->values, line);
+
+ /* Delete value */
+ if (strcmp(p, "-")) {
+ curval->changetype = REG_DIFF_DEL_VAL;
+ talloc_free(line);
+ continue;
+ }
+
+ q = strchr_m(p, ':');
+ if (q) {
+ *q = '\0';
+ q++;
+ }
+
+ curval->changetype = REG_DIFF_SET_VAL;
+ reg_string_to_val(curkey->values, q?p:"REG_SZ", q?q:p, &curval->type, &curval->data);
+
+ talloc_free(line);
+ }
+
+ close(fd);
+
+ return diff;
+}
+
+/*
+ * Apply diff to a registry context
+ */
+BOOL reg_diff_apply (const struct reg_diff *diff, struct registry_context *ctx)
+{
+ TALLOC_CTX *mem_ctx = talloc_init("apply_cmd_file");
+ struct registry_key *tmp = NULL;
+ WERROR error;
+ int i, j;
+
+ for (i = 0; i < diff->numkeys; i++) {
+ if (diff->keys[i].changetype == REG_DIFF_DEL_KEY) {
+ error = reg_key_del_abs(ctx, diff->keys[i].name);
+
+ if(!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Unable to delete key '%s'\n", diff->keys[i].name));
+ return False;
+ }
+
+ continue;
+ }
+
+ /* Add / change key */
+ error = reg_open_key_abs(mem_ctx, ctx, diff->keys[i].name, &tmp);
+
+ /* If we found it, apply the other bits, else create such a key */
+ if (W_ERROR_EQUAL(error, WERR_DEST_NOT_FOUND)) {
+ if(!W_ERROR_IS_OK(reg_key_add_abs(mem_ctx, ctx, diff->keys[i].name, 0, NULL, &tmp))) {
+ DEBUG(0, ("Error adding new key '%s'\n", diff->keys[i].name));
+ return False;
+ }
+ }
+
+ for (j = 0; j < diff->keys[i].numvalues; j++) {
+ if (diff->keys[i].values[j].changetype == REG_DIFF_DEL_VAL) {
+ error = reg_del_value(tmp, diff->keys[i].values[j].name);
+ if (!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Error deleting value '%s'\n", diff->keys[i].values[j].name));
+ return False;
+ }
+
+ error = reg_val_set(tmp, diff->keys[i].values[j].name,
+ diff->keys[i].values[j].type,
+ diff->keys[i].values[j].data);
+ if (!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Error setting value '%s'\n", diff->keys[i].values[j].name));
+ return False;
+ }
+ }
+ }
+ }
+
+ return True;
+}