It would sometimes be helpful for debugging or verification purposes
to be able to convert a binary policy to a human-readable form.
Create new function, sepol_kernel_policydb_to_conf(), that takes a
policydb created from a binary policy and writes a policy.conf file
to the provided FILE pointer.
Signed-off-by: James Carter <jwcart2@xxxxxxxxxxxxx>
---
libsepol/include/sepol/kernel_to_conf.h | 5 +
libsepol/src/kernel_to_conf.c | 3043 +++++++++++++++++++++++++++++++
libsepol/src/libsepol.map.in | 1 +
3 files changed, 3049 insertions(+)
create mode 100644 libsepol/include/sepol/kernel_to_conf.h
create mode 100644 libsepol/src/kernel_to_conf.c
diff --git a/libsepol/include/sepol/kernel_to_conf.h b/libsepol/include/sepol/kernel_to_conf.h
new file mode 100644
index 0000000..2313f38
--- /dev/null
+++ b/libsepol/include/sepol/kernel_to_conf.h
@@ -0,0 +1,5 @@
+#include <stdlib.h>
+
+#include <sepol/policydb/policydb.h>
+
+int sepol_kernel_policydb_to_conf(FILE *fp, struct policydb *pdb);
diff --git a/libsepol/src/kernel_to_conf.c b/libsepol/src/kernel_to_conf.c
new file mode 100644
index 0000000..1ff68be
--- /dev/null
+++ b/libsepol/src/kernel_to_conf.c
@@ -0,0 +1,3043 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
+
+#include <sepol/policydb/avtab.h>
+#include <sepol/policydb/conditional.h>
+#include <sepol/policydb/flask.h>
+#include <sepol/policydb/hashtab.h>
+#include <sepol/policydb/polcaps.h>
+#include <sepol/policydb/policydb.h>
+#include <sepol/policydb/services.h>
+#include <sepol/policydb/util.h>
+
+#include "kernel_to_common.h"
+
+
+static char *cond_expr_to_str(struct policydb *pdb, struct cond_expr *expr)
+{
+ struct cond_expr *curr;
+ struct strs *stack;
+ char *new_val;
+ char *str = NULL;
+ int rc;
+
+ rc = stack_init(&stack);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (curr = expr; curr != NULL; curr = curr->next) {
+ if (curr->expr_type == COND_BOOL) {
+ char *val1 = pdb->p_bool_val_to_name[curr->bool - 1];
+ new_val = create_str("%s", 1, val1);
+ } else {
+ const char *op;
+ uint32_t num_params;
+ char *val1 = NULL;
+ char *val2 = NULL;
+
+ switch(curr->expr_type) {
+ case COND_NOT: op = "!"; num_params = 1; break;
+ case COND_OR: op = "||"; num_params = 2; break;
+ case COND_AND: op = "&&"; num_params = 2; break;
+ case COND_XOR: op = "^"; num_params = 2; break;
+ case COND_EQ: op = "=="; num_params = 2; break;
+ case COND_NEQ: op = "!="; num_params = 2; break;
+ default:
+ sepol_log_err("Unknown conditional operator: %i", curr->expr_type);
+ goto exit;
+ }
+
+ if (num_params == 2) {
+ val2 = stack_pop(stack);
+ if (!val2) {
+ sepol_log_err("Invalid conditional expression");
+ goto exit;
+ }
+ }
+ val1 = stack_pop(stack);
+ if (!val1) {
+ sepol_log_err("Invalid conditional expression");
+ free(val2);
+ goto exit;
+ }
+ if (num_params == 2) {
+ new_val = create_str("(%s %s %s)", 3, val1, op, val2);
+ free(val2);
+ } else {
+ new_val = create_str("%s %s", 2, op, val1);
+ }
+ free(val1);
+ }
+ if (!new_val) {
+ sepol_log_err("Invalid conditional expression");
+ goto exit;
+ }
+ rc = stack_push(stack, new_val);
+ if (rc != 0) {
+ sepol_log_err("Out of memory");
+ goto exit;
+ }
+ }
+
+ new_val = stack_pop(stack);
+ if (!new_val || !stack_empty(stack)) {
+ sepol_log_err("Invalid conditional expression");
+ goto exit;
+ }
+
+ str = new_val;
+
+ stack_destroy(&stack);
+ return str;
+
+exit:
+ while ((new_val = stack_pop(stack)) != NULL) {
+ free(new_val);
+ }
+ stack_destroy(&stack);
+
+ return NULL;
+}
+
+static char *constraint_expr_to_str(struct policydb *pdb, struct constraint_expr *expr, int *use_mls)
+{
+ struct constraint_expr *curr;
+ struct strs *stack = NULL;
+ char *new_val = NULL;
+ const char *op;
+ char *str = NULL;
+ int rc;
+
+ *use_mls = 0;
+
+ rc = stack_init(&stack);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (curr = expr; curr; curr = curr->next) {
+ if (curr->expr_type == CEXPR_ATTR || curr->expr_type == CEXPR_NAMES) {
+ const char *attr1 = NULL;
+ const char *attr2 = NULL;
+
+ switch (curr->op) {
+ case CEXPR_EQ: op = "=="; break;
+ case CEXPR_NEQ: op = "!="; break;
+ case CEXPR_DOM: op = "dom"; break;
+ case CEXPR_DOMBY: op = "domby"; break;
+ case CEXPR_INCOMP: op = "incomp"; break;
+ default:
+ sepol_log_err("Unknown constraint operator: %i", curr->op);
+ goto exit;
+ }
+
+ switch (curr->attr) {
+ case CEXPR_USER: attr1 ="u1"; attr2 ="u2"; break;
+ case CEXPR_USER | CEXPR_TARGET: attr1 ="u2"; attr2 =""; break;
+ case CEXPR_USER | CEXPR_XTARGET: attr1 ="u3"; attr2 =""; break;
+ case CEXPR_ROLE: attr1 ="r1"; attr2 ="r2"; break;
+ case CEXPR_ROLE | CEXPR_TARGET: attr1 ="r2"; attr2 =""; break;
+ case CEXPR_ROLE | CEXPR_XTARGET: attr1 ="r3"; attr2 =""; break;
+ case CEXPR_TYPE: attr1 ="t1"; attr2 ="t2"; break;
+ case CEXPR_TYPE | CEXPR_TARGET: attr1 ="t2"; attr2 =""; break;
+ case CEXPR_TYPE | CEXPR_XTARGET: attr1 ="t3"; attr2 =""; break;
+ case CEXPR_L1L2: attr1 ="l1"; attr2 ="l2"; break;
+ case CEXPR_L1H2: attr1 ="l1"; attr2 ="h2"; break;
+ case CEXPR_H1L2: attr1 ="h1"; attr2 ="l2"; break;
+ case CEXPR_H1H2: attr1 ="h1"; attr2 ="h2"; break;
+ case CEXPR_L1H1: attr1 ="l1"; attr2 ="h1"; break;
+ case CEXPR_L2H2: attr1 ="l2"; attr2 ="h2"; break;
+ default:
+ sepol_log_err("Unknown constraint attribute: %i", curr->attr);
+ goto exit;
+ }
+
+ if (curr->attr >= CEXPR_XTARGET) {
+ *use_mls = 1;
+ }
+
+ if (curr->expr_type == CEXPR_ATTR) {
+ new_val = create_str("%s %s %s", 3, attr1, op, attr2);
+ } else {
+ char *names = NULL;
+ if (curr->attr & CEXPR_TYPE) {
+ struct type_set *ts = curr->type_names;
+ names = ebitmap_to_str(&ts->types, pdb->p_type_val_to_name, 1);
+ } else if (curr->attr & CEXPR_USER) {
+ names = ebitmap_to_str(&curr->names, pdb->p_user_val_to_name, 1);
+ } else if (curr->attr & CEXPR_ROLE) {
+ names = ebitmap_to_str(&curr->names, pdb->p_role_val_to_name, 1);
+ }
+ if (!names) {
+ goto exit;
+ }
+ new_val = create_str("%s %s %s", 3, attr1, op, names);
+ free(names);
+ }
+ } else {
+ uint32_t num_params;
+ char *val1 = NULL;
+ char *val2 = NULL;
+
+ switch (curr->expr_type) {
+ case CEXPR_NOT: op = "not"; num_params = 1; break;
+ case CEXPR_AND: op = "and"; num_params = 2; break;
+ case CEXPR_OR: op = "or"; num_params = 2; break;
+ default:
+ sepol_log_err("Unknown constraint expression type: %i", curr->expr_type);
+ goto exit;
+ }
+
+ if (num_params == 2) {
+ val2 = stack_pop(stack);
+ if (!val2) {
+ sepol_log_err("Invalid constraint expression");
+ goto exit;
+ }
+ }
+ val1 = stack_pop(stack);
+ if (!val1) {
+ sepol_log_err("Invalid constraint expression");
+ goto exit;
+ }
+
+ if (num_params == 2) {
+ new_val = create_str("(%s %s %s)", 3, val1, op, val2);
+ free(val2);
+ } else {
+ new_val = create_str("%s (%s)", 2, op, val1);
+ }
+ free(val1);
+ }
+ if (!new_val) {
+ goto exit;
+ }
+ rc = stack_push(stack, new_val);
+ if (rc != 0) {
+ sepol_log_err("Out of memory");
+ goto exit;
+ }
+ }
+
+ new_val = stack_pop(stack);
+ if (!new_val || !stack_empty(stack)) {
+ sepol_log_err("Invalid constraint expression");
+ goto exit;
+ }
+
+ str = new_val;
+
+ stack_destroy(&stack);
+
+ return str;
+
+exit:
+ while ((new_val = stack_pop(stack)) != NULL) {
+ free(new_val);
+ }
+ stack_destroy(&stack);
+
+ return NULL;
+}
+
+static int class_constraint_rules_to_strs(struct policydb *pdb, char *classkey,
+ class_datum_t *class,
+ struct constraint_node *constraint_rules,
+ struct strs *mls_list,
+ struct strs *non_mls_list)
+{
+ struct constraint_node *curr;
+ struct strs *strs;
+ const char *format_str, *flavor;
+ char *perms, *expr;
+ int is_mls;
+ int rc = 0;
+
+ for (curr = constraint_rules; curr != NULL; curr = curr->next) {
+ expr = constraint_expr_to_str(pdb, curr->expr, &is_mls);
+ if (!expr) {
+ rc = -1;
+ goto exit;
+ }
+
+ perms = sepol_av_to_string(pdb, class->s.value, curr->permissions);
+ if (strchr(perms, ' ')) {
+ format_str = "%s %s { %s } %s;";
+ } else {
+ format_str = "%s %s %s %s";
+ }
+ if (is_mls) {
+ flavor = "mlsconstrain";
+ strs = mls_list;
+ } else {
+ flavor = "constrain";
+ strs = non_mls_list;
+ }
+
+ rc = strs_create_and_add(strs, format_str, 4,
+ flavor, classkey, perms+1, expr);
+ free(expr);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+ return 0;
+exit:
+ sepol_log_err("Error gathering constraint rules\n");
+ return rc;
+}
+
+static int class_validatetrans_rules_to_strs(struct policydb *pdb, char *classkey,
+ struct constraint_node *validatetrans_rules,
+ struct strs *mls_list,
+ struct strs *non_mls_list)
+{
+ struct constraint_node *curr;
+ struct strs *strs;
+ const char *flavor;
+ char *expr;
+ int is_mls;
+ int rc = 0;
+
+ for (curr = validatetrans_rules; curr != NULL; curr = curr->next) {
+ expr = constraint_expr_to_str(pdb, curr->expr, &is_mls);
+ if (!expr) {
+ rc = -1;
+ goto exit;
+ }
+
+ if (is_mls) {
+ flavor = "mlsvalidatetrans";
+ strs = mls_list;
+ } else {
+ flavor = "validatetrans";
+ strs = non_mls_list;
+ }
+
+ rc = strs_create_and_add(strs, "%s %s %s;", 3, flavor, classkey, expr);
+ free(expr);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+exit:
+ return rc;
+}
+
+static int constraint_rules_to_strs(struct policydb *pdb, struct strs *mls_strs, struct strs *non_mls_strs)
+{
+ class_datum_t *class;
+ char *name;
+ unsigned i;
+ int rc = 0;
+
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ class = pdb->class_val_to_struct[i];
+ if (class->constraints) {
+ name = pdb->p_class_val_to_name[i];
+ rc = class_constraint_rules_to_strs(pdb, name, class, class->constraints, mls_strs, non_mls_strs);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ class = pdb->class_val_to_struct[i];
+ if (class->validatetrans) {
+ name = pdb->p_class_val_to_name[i];
+ rc = class_validatetrans_rules_to_strs(pdb, name, class->constraints, mls_strs, non_mls_strs);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+
+exit:
+ return rc;
+}
+
+static int write_handle_unknown_to_conf(FILE *out, struct policydb *pdb)
+{
+ const char *action;
+
+ switch (pdb->handle_unknown) {
+ case SEPOL_DENY_UNKNOWN:
+ action = "deny";
+ break;
+ case SEPOL_REJECT_UNKNOWN:
+ action = "reject";
+ break;
+ case SEPOL_ALLOW_UNKNOWN:
+ action = "allow";
+ break;
+ default:
+ sepol_log_err("Unknown value for handle-unknown: %i", pdb->handle_unknown);
+ return -1;
+ }
+
+ sepol_printf(out, "# handle_unknown %s\n", action);
+
+ return 0;
+}
+
+static int write_class_decl_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ char *name;
+ unsigned i;
+
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ name = pdb->p_class_val_to_name[i];
+ sepol_printf(out, "class %s\n", name);
+ }
+
+ return 0;
+}
+
+static int write_sids_to_conf(FILE *out, const char *const *sid_to_str, struct ocontext *isids)
+{
+ struct ocontext *isid;
+ struct strs *strs;
+ char *sid;
+ unsigned i;
+ int rc;
+
+ rc = strs_init(&strs, SECINITSID_NUM+1);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (isid = isids; isid != NULL; isid = isid->next) {
+ i = isid->sid[0];
+ rc = strs_add_at_index(strs, (char *)sid_to_str[i], i);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+ for (i=0; i<strs_num_items(strs); i++) {
+ sid = strs_read_at_index(strs, i);
+ if (!sid) {
+ continue;
+ }
+ sepol_printf(out, "sid %s\n", sid);
+ }
+
+exit:
+ strs_destroy(&strs);
+ if (rc != 0) {
+ sepol_log_err("Error writing sid rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_sid_decl_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ int rc = 0;
+
+ if (pdb->target_platform == SEPOL_TARGET_SELINUX) {
+ rc = write_sids_to_conf(out, selinux_sid_to_str, pdb->ocontexts[0]);
+ } else if (pdb->target_platform == SEPOL_TARGET_XEN) {
+ rc = write_sids_to_conf(out, xen_sid_to_str, pdb->ocontexts[0]);
+ } else {
+ sepol_log_err("Unknown target platform: %i", pdb->target_platform);
+ rc = -1;
+ }
+
+ return rc;
+}
+static char *class_or_common_perms_to_str(symtab_t *permtab)
+{
+ struct strs *strs;
+ char *perms = NULL;
+ int rc = 0;
+
+ rc = strs_init(&strs, permtab->nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = hashtab_map(permtab->table, hashtab_ordered_to_strs, strs);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ if (strs_num_items(strs) > 0) {
+ perms = strs_to_str(strs);
+ }
+
+exit:
+ strs_destroy(&strs);
+
+ return perms;
+}
+
+static int write_class_and_common_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ class_datum_t *class;
+ common_datum_t *common;
+ int *used;
+ char *name, *perms;
+ unsigned i;
+ int rc = 0;
+
+ /* common */
+ used = calloc(pdb->p_commons.nprim, sizeof(*used));
+ if (!used) {
+ sepol_log_err("Out of memory");
+ rc = -1;
+ goto exit;
+ }
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ class = pdb->class_val_to_struct[i];
+ name = class->comkey;
+ if (!name) continue;
+ common = hashtab_search(pdb->p_commons.table, name);
+ if (!common) {
+ rc = -1;
+ free(used);
+ goto exit;
+ }
+ /* Only write common rule once */
+ if (!used[common->s.value-1]) {
+ perms = class_or_common_perms_to_str(&common->permissions);
+ if (!perms) {
+ rc = -1;
+ free(used);
+ goto exit;
+ }
+ sepol_printf(out, "common %s { %s }\n", name, perms);
+ free(perms);
+ used[common->s.value-1] = 1;
+ }
+ }
+ free(used);
+
+ /* class */
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ class = pdb->class_val_to_struct[i];
+ name = pdb->p_class_val_to_name[i];
+ sepol_printf(out, "class %s", name);
+ if (class->comkey) {
+ sepol_printf(out, " inherits %s", class->comkey);
+ }
+ perms = class_or_common_perms_to_str(&class->permissions);
+ if (perms) {
+ sepol_printf(out, " { %s }", perms);
+ free(perms);
+ }
+ sepol_printf(out, "\n");
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing class rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_default_user_to_conf(FILE *out, char *class_name, class_datum_t *class)
+{
+ const char *dft;
+
+ switch (class->default_user) {
+ case DEFAULT_SOURCE:
+ dft = "source";
+ break;
+ case DEFAULT_TARGET:
+ dft = "target";
+ break;
+ default:
+ sepol_log_err("Unknown default role value: %i", class->default_user);
+ return -1;
+ }
+ sepol_printf(out, "default_user { %s } %s;\n", class_name, dft);
+
+ return 0;
+}
+
+static int write_default_role_to_conf(FILE *out, char *class_name, class_datum_t *class)
+{
+ const char *dft;
+
+ switch (class->default_role) {
+ case DEFAULT_SOURCE:
+ dft = "source";
+ break;
+ case DEFAULT_TARGET:
+ dft = "target";
+ break;
+ default:
+ sepol_log_err("Unknown default role value: %i", class->default_role);
+ return -1;
+ }
+ sepol_printf(out, "default_role { %s } %s;\n", class_name, dft);
+
+ return 0;
+}
+
+static int write_default_type_to_conf(FILE *out, char *class_name, class_datum_t *class)
+{
+ const char *dft;
+
+ switch (class->default_type) {
+ case DEFAULT_SOURCE:
+ dft = "source";
+ break;
+ case DEFAULT_TARGET:
+ dft = "target";
+ break;
+ default:
+ sepol_log_err("Unknown default type value: %i", class->default_type);
+ return -1;
+ }
+ sepol_printf(out, "default_type { %s } %s;\n", class_name, dft);
+
+ return 0;
+}
+
+static int write_default_range_to_conf(FILE *out, char *class_name, class_datum_t *class)
+{
+ const char *dft;
+
+ switch (class->default_range) {
+ case DEFAULT_SOURCE_LOW:
+ dft = "source low";
+ break;
+ case DEFAULT_SOURCE_HIGH:
+ dft = "source high";
+ break;
+ case DEFAULT_SOURCE_LOW_HIGH:
+ dft = "source low-high";
+ break;
+ case DEFAULT_TARGET_LOW:
+ dft = "target low";
+ break;
+ case DEFAULT_TARGET_HIGH:
+ dft = "target high";
+ break;
+ case DEFAULT_TARGET_LOW_HIGH:
+ dft = "target low-high";
+ break;
+ default:
+ sepol_log_err("Unknown default type value: %i", class->default_range);
+ return -1;
+ }
+ sepol_printf(out, "default_range { %s } %s;\n", class_name, dft);
+
+ return 0;
+}
+
+static int write_default_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ class_datum_t *class;
+ unsigned i;
+ int rc = 0;
+
+ /* default_user */
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ class = pdb->class_val_to_struct[i];
+ if (class->default_user != 0) {
+ rc = write_default_user_to_conf(out, pdb->p_class_val_to_name[i], class);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ /* default_role */
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ class = pdb->class_val_to_struct[i];
+ if (class->default_role != 0) {
+ rc = write_default_role_to_conf(out, pdb->p_class_val_to_name[i], class);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ /* default_type */
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ class = pdb->class_val_to_struct[i];
+ if (class->default_type != 0) {
+ rc = write_default_type_to_conf(out, pdb->p_class_val_to_name[i], class);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ if (!pdb->mls) {
+ return 0;
+ }
+
+ /* default_range */
+ for (i=0; i < pdb->p_classes.nprim; i++) {
+ class = pdb->class_val_to_struct[i];
+ if (class->default_range != 0) {
+ rc = write_default_range_to_conf(out, pdb->p_class_val_to_name[i], class);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing default rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int map_sensitivity_aliases_to_strs(char *key, void *data, void *args)
+{
+ level_datum_t *sens = data;
+ struct strs *strs = args;
+ int rc = 0;
+
+ if (sens->isalias) {
+ rc = strs_add(strs, key);
+ }
+
+ return rc;
+}
+
+static int write_sensitivity_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ level_datum_t *level;
+ struct strs *strs;
+ char **sens_alias_map = NULL;
+ char *name, *prev, *alias;
+ unsigned i, j, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_levels.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = hashtab_map(pdb->p_levels.table, map_sensitivity_aliases_to_strs, strs);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ num = strs_num_items(strs);
+
+ if (num > 0) {
+ sens_alias_map = calloc(sizeof(*sens_alias_map), pdb->p_levels.nprim);
+ if (!sens_alias_map) {
+ rc = -1;
+ goto exit;
+ }
+
+ /* map aliases to sensitivities */
+ for (i=0; i < num; i++) {
+ name = strs_read_at_index(strs, i);
+ level = hashtab_search(pdb->p_levels.table, name);
+ if (!level) {
+ rc = -1;
+ goto exit;
+ }
+ j = level->level->sens - 1;
+ if (!sens_alias_map[j]) {
+ sens_alias_map[j] = strdup(name);
+ } else {
+ alias = sens_alias_map[j];
+ sens_alias_map[j] = create_str("%s %s", 2, alias, name);
+ free(alias);
+ if (!sens_alias_map[j]) {
+ rc = -1;
+ goto exit;
+ }
+ }
+ }
+ }
+
+ /* sensitivities */
+ for (i=0; i < pdb->p_levels.nprim; i++) {
+ name = pdb->p_sens_val_to_name[i];
+ if (!name) continue;
+ level = hashtab_search(pdb->p_levels.table, name);
+ if (!level) {
+ rc = -1;
+ goto exit;
+ }
+ if (level->isalias) continue;
+
+ if (sens_alias_map && sens_alias_map[i]) {
+ alias = sens_alias_map[i];
+ if (strchr(alias, ' ')) {
+ sepol_printf(out, "sensitivity %s alias { %s };\n", name, alias);
+ } else {
+ sepol_printf(out, "sensitivity %s alias %s;\n", name, alias);
+ }
+ } else {
+ sepol_printf(out, "sensitivity %s;\n", name);
+ }
+ }
+
+ /* dominance */
+ sepol_printf(out, "dominance { ");
+ prev = NULL;
+ for (i=0; i < pdb->p_levels.nprim; i++) {
+ name = pdb->p_sens_val_to_name[i];
+ if (!name) continue;
+ level = hashtab_search(pdb->p_levels.table, name);
+ if (!level) {
+ rc = -1;
+ goto exit;
+ }
+ if (level->isalias) continue;
+
+ if (prev) {
+ sepol_printf(out, "%s ", prev);
+ }
+ prev = name;
+ }
+ if (prev) {
+ sepol_printf(out, "%s", prev);
+ }
+ sepol_printf(out, " }\n");
+
+exit:
+ if (sens_alias_map) {
+ for (i=0; i < pdb->p_levels.nprim; i++) {
+ free(sens_alias_map[i]);
+ }
+ free(sens_alias_map);
+ }
+
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing sensitivity rules to CIL\n");
+ }
+
+ return rc;
+}
+
+static int map_category_aliases_to_strs(char *key, void *data, void *args)
+{
+ cat_datum_t *cat = data;
+ struct strs *strs = args;
+ int rc = 0;
+
+ if (cat->isalias) {
+ rc = strs_add(strs, key);
+ }
+
+ return rc;
+}
+
+static int write_category_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ cat_datum_t *cat;
+ struct strs *strs;
+ char **cat_alias_map = NULL;
+ char *name, *alias;
+ unsigned i, j, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_levels.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = hashtab_map(pdb->p_cats.table, map_category_aliases_to_strs, strs);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ num = strs_num_items(strs);
+
+ if (num > 0) {
+ cat_alias_map = calloc(sizeof(*cat_alias_map), pdb->p_cats.nprim);
+ if (!cat_alias_map) {
+ rc = -1;
+ goto exit;
+ }
+
+ /* map aliases to categories */
+ for (i=0; i < num; i++) {
+ name = strs_read_at_index(strs, i);
+ cat = hashtab_search(pdb->p_cats.table, name);
+ if (!cat) {
+ rc = -1;
+ goto exit;
+ }
+ j = cat->s.value - 1;
+ if (!cat_alias_map[j]) {
+ cat_alias_map[j] = strdup(name);
+ } else {
+ alias = cat_alias_map[j];
+ cat_alias_map[j] = create_str("%s %s", 2, alias, name);
+ free(alias);
+ if (!cat_alias_map[j]) {
+ rc = -1;
+ goto exit;
+ }
+ }
+ }
+ }
+
+ /* categories */
+ for (i=0; i < pdb->p_cats.nprim; i++) {
+ name = pdb->p_cat_val_to_name[i];
+ if (!name) continue;
+ cat = hashtab_search(pdb->p_cats.table, name);
+ if (!cat) {
+ rc = -1;
+ goto exit;
+ }
+ if (cat->isalias) continue;
+
+ if (cat_alias_map && cat_alias_map[i]) {
+ alias = cat_alias_map[i];
+ if (strchr(alias, ' ')) {
+ sepol_printf(out, "category %s alias { %s };\n", name, alias);
+ } else {
+ sepol_printf(out, "category %s alias %s;\n", name, alias);
+ }
+ } else {
+ sepol_printf(out, "category %s;\n", name);
+ }
+ }
+
+exit:
+ if (cat_alias_map) {
+ for (i=0; i < pdb->p_cats.nprim; i++) {
+ free(cat_alias_map[i]);
+ }
+ free(cat_alias_map);
+ }
+
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing category rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static size_t cats_ebitmap_len(struct ebitmap *cats, char **val_to_name)
+{
+ struct ebitmap_node *node;
+ uint32_t i, start, range;
+ size_t len = 0;
+
+ range = 0;
+ ebitmap_for_each_bit(cats, node, i) {
+ if (!ebitmap_get_bit(cats, i))
+ continue;
+
+ if (range == 0)
+ start = i;
+
+ range++;
+
+ if (ebitmap_get_bit(cats, i+1))
+ continue;
+
+ len += strlen(val_to_name[start]) + 1;
+ if (range > 1) {
+ len += strlen(val_to_name[i]) + 1;
+ }
+
+ range = 0;
+ }
+
+ return len;
+}
+
+static char *cats_ebitmap_to_str(struct ebitmap *cats, char **val_to_name)
+{
+ struct ebitmap_node *node;
+ uint32_t i, start, range, first;
+ char *catsbuf, *p;
+ const char *fmt;
+ char sep;
+ int len, remaining;
+
+ remaining = (int)cats_ebitmap_len(cats, val_to_name);
+ catsbuf = malloc(remaining);
+ if (!catsbuf) {
+ goto exit;
+ }
+
+ p = catsbuf;
+
+ first = 1;
+ range = 0;
+ ebitmap_for_each_bit(cats, node, i) {
+ if (!ebitmap_get_bit(cats, i))
+ continue;
+
+ if (range == 0)
+ start = i;
+
+ range++;
+
+ if (ebitmap_get_bit(cats, i+1))
+ continue;
+
+ if (range > 1) {
+ sep = (range == 2) ? ',' : '.';
+ fmt = first ? "%s%c%s" : ",%s%c%s";
+ len = snprintf(p, remaining, fmt,
+ val_to_name[start], sep, val_to_name[i]);
+ } else {
+ fmt = first ? "%s" : ",%s";
+ len = snprintf(p, remaining, fmt, val_to_name[start]);
+
+ }
+ if (len < 0 || len >= remaining) {
+ goto exit;
+ }
+ p += len;
+ remaining -= len;
+ first = 0;
+ range = 0;
+ }
+
+ *p = '\0';
+
+ return catsbuf;
+
+exit:
+ free(catsbuf);
+ return NULL;
+}
+
+static int write_level_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ level_datum_t *level;
+ char *name, *cats;
+ unsigned i;
+ int rc = 0;
+
+ for (i=0; i < pdb->p_levels.nprim; i++) {
+ name = pdb->p_sens_val_to_name[i];
+ if (!name) continue;
+ level = hashtab_search(pdb->p_levels.table, name);
+ if (!level) {
+ rc = -1;
+ goto exit;
+ }
+ if (level->isalias) continue;
+
+ if (ebitmap_cardinality(&level->level->cat) > 0) {
+ cats = cats_ebitmap_to_str(&level->level->cat, pdb->p_cat_val_to_name);
+ sepol_printf(out, "level %s:%s;\n", name, cats);
+ free(cats);
+ } else {
+ sepol_printf(out, "level %s;\n", name);
+ }
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing level rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_mls_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ int rc = 0;
+
+ if (!pdb->mls) {
+ return 0;
+ }
+
+ rc = write_sensitivity_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_category_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_level_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing mls rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_polcap_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ebitmap_node *node;
+ const char *name;
+ uint32_t i;
+ int rc = 0;
+
+ ebitmap_for_each_bit(&pdb->policycaps, node, i) {
+ if (!ebitmap_get_bit(&pdb->policycaps, i)) {
+ continue;
+ }
+ name = sepol_polcap_getname(i);
+ if (name == NULL) {
+ sepol_log_err("Unknown policy capability id: %i", i);
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "policycap %s;\n", name);
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing polcap rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_type_attributes_to_conf(FILE *out, struct policydb *pdb)
+{
+ type_datum_t *type;
+ char *name;
+ struct strs *strs;
+ unsigned i, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_types.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (i=0; i < pdb->p_types.nprim; i++) {
+ type = pdb->type_val_to_struct[i];
+ if (type->flavor == TYPE_ATTRIB) {
+ rc = strs_add(strs, pdb->p_type_val_to_name[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ strs_sort(strs);
+
+ num = strs_num_items(strs);
+ for (i = 0; i < num; i++) {
+ name = strs_read_at_index(strs, i);
+ if (!name) {
+ rc = -1;
+ goto exit;
+ }
+ sepol_printf(out, "attribute %s;\n", name);
+ }
+
+exit:
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing typeattribute rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_role_attributes_to_conf(FILE *out, struct policydb *pdb)
+{
+ role_datum_t *role;
+ char *name;
+ struct strs *strs;
+ unsigned i, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_roles.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (i=0; i < pdb->p_roles.nprim; i++) {
+ role = pdb->role_val_to_struct[i];
+ if (role && role->flavor == ROLE_ATTRIB) {
+ rc = strs_add(strs, pdb->p_role_val_to_name[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ strs_sort(strs);
+
+ num = strs_num_items(strs);
+ for (i=0; i<num; i++) {
+ name = strs_read_at_index(strs, i);
+ if (!name) {
+ rc = -1;
+ goto exit;
+ }
+ sepol_printf(out, "attribute_role %s;\n", name);
+ }
+
+exit:
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing roleattribute rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int map_boolean_to_strs(char *key, void *data, void *args)
+{
+ struct strs *strs = (struct strs *)args;
+ struct cond_bool_datum *boolean = data;
+ const char *value;
+
+ value = boolean->state ? "true" : "false";
+
+ return strs_create_and_add(strs, "bool %s %s;", 2, key, value);
+}
+
+static int write_boolean_decl_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct strs *strs;
+ int rc = 0;
+
+ rc = strs_init(&strs, 32);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = hashtab_map(pdb->p_bools.table, map_boolean_to_strs, strs);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ strs_sort(strs);
+ strs_write_each(strs, out);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing boolean declarations to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_type_decl_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ type_datum_t *type;
+ struct strs *strs;
+ char *name;
+ unsigned i, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_types.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (i=0; i < pdb->p_types.nprim; i++) {
+ type = pdb->type_val_to_struct[i];
+ if (type->flavor == TYPE_TYPE && type->primary) {
+ rc = strs_add(strs, pdb->p_type_val_to_name[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ strs_sort(strs);
+
+ num = strs_num_items(strs);
+ for (i=0; i<num; i++) {
+ name = strs_read_at_index(strs, i);
+ if (!name) {
+ rc = -1;
+ goto exit;
+ }
+ sepol_printf(out, "type %s;\n", name);
+ }
+
+exit:
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing type declarations to policy.con\n");
+ }
+
+ return rc;
+}
+
+static int write_type_alias_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ type_datum_t *alias;
+ struct strs *strs;
+ char *name;
+ char *type;
+ unsigned i, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_types.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (i=0; i < pdb->p_types.nprim; i++) {
+ alias = pdb->type_val_to_struct[i];
+ if (!alias->primary) {
+ rc = strs_add(strs, pdb->p_type_val_to_name[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ strs_sort(strs);
+
+ num = strs_num_items(strs);
+
+ for (i=0; i<num; i++) {
+ name = strs_read_at_index(strs, i);
+ if (!name) {
+ rc = -1;
+ goto exit;
+ }
+ alias = hashtab_search(pdb->p_types.table, name);
+ if (!alias) {
+ rc = -1;
+ goto exit;
+ }
+ type = pdb->p_type_val_to_name[alias->s.value - 1];
+ sepol_printf(out, "typealias %s %s;\n", type, name);
+ }
+
+exit:
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing type alias rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_type_bounds_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ type_datum_t *type;
+ struct strs *strs;
+ char *parent;
+ char *child;
+ unsigned i, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_types.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (i=0; i < pdb->p_types.nprim; i++) {
+ type = pdb->type_val_to_struct[i];
+ if (type->flavor == TYPE_TYPE) {
+ if (type->bounds > 0) {
+ rc = strs_add(strs, pdb->p_type_val_to_name[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+ }
+
+ strs_sort(strs);
+
+ num = strs_num_items(strs);
+ for (i=0; i<num; i++) {
+ child = strs_read_at_index(strs, i);
+ if (!child) {
+ rc = -1;
+ goto exit;
+ }
+ type = hashtab_search(pdb->p_types.table, child);
+ if (!type) {
+ rc = -1;
+ goto exit;
+ }
+ parent = pdb->p_type_val_to_name[type->bounds - 1];
+ sepol_printf(out, "typebounds %s %s;\n", parent, child);
+ }
+
+exit:
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing type bounds rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static char *attr_strs_to_str(struct strs *strs)
+{
+ char *str = NULL;
+ size_t len = 0;
+ char *p;
+ unsigned i;
+ int rc;
+
+ if (strs->num == 0) {
+ goto exit;
+ }
+
+ /* 2*strs->num - 1 because ", " follows all but last attr (followed by '\0') */
+ len = strs_len_items(strs) + 2*strs->num - 1;
+ str = malloc(len);
+ if (!str) {
+ sepol_log_err("Out of memory");
+ goto exit;
+ }
+
+ p = str;
+ for (i=0; i<strs->num; i++) {
+ if (!strs->list[i]) continue;
+ len = strlen(strs->list[i]);
+ rc = snprintf(p, len+1, "%s", strs->list[i]);
+ if (rc < 0 || rc > (int)len) {
+ free(str);
+ str = NULL;
+ goto exit;
+ }
+ p += len;
+ if (i < strs->num - 1) {
+ *p++ = ',';
+ *p++ = ' ';
+ }
+ }
+
+ *p = '\0';
+
+exit:
+ return str;
+}
+
+static char *attrmap_to_str(struct ebitmap *map, char **val_to_name)
+{
+ struct strs *strs;
+ char *str = NULL;
+ int rc;
+
+ rc = strs_init(&strs, 32);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = ebitmap_to_strs(map, strs, val_to_name);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ strs_sort(strs);
+
+ str = attr_strs_to_str(strs);
+
+exit:
+ strs_destroy(&strs);
+
+ return str;
+}
+
+static int write_type_attribute_sets_to_conf(FILE *out, struct policydb *pdb)
+{
+ type_datum_t *type;
+ struct strs *strs;
+ ebitmap_t attrmap;
+ char *name, *attrs;
+ unsigned i;
+ int rc;
+
+ rc = strs_init(&strs, pdb->p_types.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (i=0; i < pdb->p_types.nprim; i++) {
+ type = pdb->type_val_to_struct[i];
+ if (type->flavor != TYPE_TYPE || !type->primary) continue;
+ if (ebitmap_cardinality(&pdb->type_attr_map[i]) == 1) continue;
+
+ rc = ebitmap_cpy(&attrmap, &pdb->type_attr_map[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ rc = ebitmap_set_bit(&attrmap, i, 0);
+ if (rc != 0) {
+ ebitmap_destroy(&attrmap);
+ goto exit;
+ }
+ name = pdb->p_type_val_to_name[i];
+ attrs = attrmap_to_str(&attrmap, pdb->p_type_val_to_name);
+ ebitmap_destroy(&attrmap);
+ if (!attrs) {
+ rc = -1;
+ goto exit;
+ }
+
+ rc = strs_create_and_add(strs, "typeattribute %s %s;",
+ 2, name, attrs);
+ free(attrs);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+ strs_sort(strs);
+ strs_write_each(strs, out);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing typeattributeset rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_type_permissive_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ type_datum_t *type;
+ struct strs *strs;
+ char *name;
+ unsigned i, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_types.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (i=0; i < pdb->p_types.nprim; i++) {
+ type = pdb->type_val_to_struct[i];
+ if (type->flavor == TYPE_TYPE && (type->flags & TYPE_FLAGS_PERMISSIVE)) {
+ rc = strs_add(strs, pdb->p_type_val_to_name[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ strs_sort(strs);
+
+ num = strs_num_items(strs);
+ for (i=0; i<num; i++) {
+ name = strs_read_at_index(strs, i);
+ if (!name) {
+ rc = -1;
+ goto exit;
+ }
+ sepol_printf(out, "permissive %s;\n", name);
+ }
+
+exit:
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing typepermissive rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static char *avtab_node_to_str(struct policydb *pdb, avtab_key_t *key, avtab_datum_t *datum)
+{
+ uint32_t data = datum->data;
+ type_datum_t *type;
+ const char *flavor, *src, *tgt, *class, *perms, *new;
+ char *rule = NULL;
+
+ switch (0xFFF & key->specified) {
+ case AVTAB_ALLOWED:
+ flavor = "allow";
+ break;
+ case AVTAB_AUDITALLOW:
+ flavor = "auditallow";
+ break;
+ case AVTAB_AUDITDENY:
+ flavor = "dontaudit";
+ data = ~data;
+ break;
+ case AVTAB_XPERMS_ALLOWED:
+ flavor = "allowxperm";
+ break;
+ case AVTAB_XPERMS_AUDITALLOW:
+ flavor = "auditallowxperm";
+ break;
+ case AVTAB_XPERMS_DONTAUDIT:
+ flavor = "dontauditxperm";
+ break;
+ case AVTAB_TRANSITION:
+ flavor = "type_transition";
+ break;
+ case AVTAB_MEMBER:
+ flavor = "type_member";
+ break;
+ case AVTAB_CHANGE:
+ flavor = "type_change";
+ break;
+ default:
+ sepol_log_err("Unknown avtab type: %i", key->specified);
+ goto exit;
+ }
+
+ src = pdb->p_type_val_to_name[key->source_type - 1];
+ tgt = pdb->p_type_val_to_name[key->target_type - 1];
+ if (key->source_type == key->target_type && !(key->specified & AVTAB_TYPE)) {
+ type = pdb->type_val_to_struct[key->source_type - 1];
+ if (type->flavor != TYPE_ATTRIB) {
+ tgt = "self";
+ }
+ }
+ class = pdb->p_class_val_to_name[key->target_class - 1];
+
+ if (key->specified & AVTAB_AV) {
+ perms = sepol_av_to_string(pdb, key->target_class, data);
+ if (perms == NULL) {
+ sepol_log_err("Failed to generate permission string");
+ goto exit;
+ }
+ rule = create_str("%s %s %s:%s { %s };", 5,
+ flavor, src, tgt, class, perms+1);
+ } else if (key->specified & AVTAB_XPERMS) {
+ perms = sepol_extended_perms_to_string(datum->xperms);
+ if (perms == NULL) {
+ sepol_log_err("Failed to generate extended permission string");
+ goto exit;
+ }
+
+ rule = create_str("%s %s %s:%s %s;", 5, flavor, src, tgt, class, perms);
+ } else {
+ new = pdb->p_type_val_to_name[data - 1];
+
+ rule = create_str("%s %s %s:%s %s;", 5, flavor, src, tgt, class, new);
+ }
+
+ if (!rule) {
+ goto exit;
+ }
+
+ return rule;
+
+exit:
+ return NULL;
+}
+
+struct map_avtab_args {
+ struct policydb *pdb;
+ uint32_t flavor;
+ struct strs *strs;
+};
+
+static int map_avtab_write_helper(avtab_key_t *key, avtab_datum_t *datum, void *args)
+{
+ struct map_avtab_args *map_args = args;
+ uint32_t flavor = map_args->flavor;
+ struct policydb *pdb = map_args->pdb;
+ struct strs *strs = map_args->strs;
+ char *rule;
+ int rc = 0;
+
+ if (key->specified & flavor) {
+ rule = avtab_node_to_str(pdb, key, datum);
+ if (!rule) {
+ rc = -1;
+ goto exit;
+ }
+ rc = strs_add(strs, rule);
+ if (rc != 0) {
+ free(rule);
+ goto exit;
+ }
+ }
+
+exit:
+ return rc;
+}
+
+static int write_avtab_flavor_to_conf(FILE *out, struct policydb *pdb, uint32_t flavor, int indent)
+{
+ struct map_avtab_args args;
+ struct strs *strs;
+ int rc = 0;
+
+ rc = strs_init(&strs, 1000);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ args.pdb = pdb;
+ args.flavor = flavor;
+ args.strs = strs;
+
+ rc = avtab_map(&pdb->te_avtab, map_avtab_write_helper, &args);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ strs_sort(strs);
+ strs_write_each_indented(strs, out, indent);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ return rc;
+}
+
+static int write_avtab_to_conf(FILE *out, struct policydb *pdb, int indent)
+{
+ unsigned i;
+ int rc = 0;
+
+ for (i = 0; i < AVTAB_FLAVORS_SZ; i++) {
+ rc = write_avtab_flavor_to_conf(out, pdb, avtab_flavors[i], indent);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing avtab rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+struct map_filename_trans_args {
+ struct policydb *pdb;
+ struct strs *strs;
+};
+
+static int map_filename_trans_to_str(hashtab_key_t key, void *data, void *arg)
+{
+ filename_trans_t *ft = (filename_trans_t *)key;
+ filename_trans_datum_t *datum = data;
+ struct map_filename_trans_args *map_args = arg;
+ struct policydb *pdb = map_args->pdb;
+ struct strs *strs = map_args->strs;
+ char *src, *tgt, *class, *filename, *new;
+
+ src = pdb->p_type_val_to_name[ft->stype - 1];
+ tgt = pdb->p_type_val_to_name[ft->ttype - 1];
+ class = pdb->p_class_val_to_name[ft->tclass - 1];
+ filename = ft->name;
+ new = pdb->p_type_val_to_name[datum->otype - 1];
+
+ return strs_create_and_add(strs, "type_transition %s %s:%s %s \"%s\";", 5,
+ src, tgt, class, new, filename);
+}
+
+static int write_filename_trans_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct map_filename_trans_args args;
+ struct strs *strs;
+ int rc = 0;
+
+ rc = strs_init(&strs, 100);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ args.pdb = pdb;
+ args.strs = strs;
+
+ rc = hashtab_map(pdb->filename_trans, map_filename_trans_to_str, &args);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ strs_sort(strs);
+ strs_write_each(strs, out);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing filename typetransition rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static char *level_to_str(struct policydb *pdb, struct mls_level *level)
+{
+ ebitmap_t *cats = &level->cat;
+ char *level_str = NULL;
+ char *sens_str = pdb->p_sens_val_to_name[level->sens - 1];
+ char *cats_str;
+
+ if (ebitmap_cardinality(cats) > 0) {
+ cats_str = cats_ebitmap_to_str(cats, pdb->p_cat_val_to_name);
+ level_str = create_str("%s:%s", 2, sens_str, cats_str);
+ free(cats_str);
+ } else {
+ level_str = create_str("%s", 1, sens_str);
+ }
+
+ return level_str;
+}
+
+static char *range_to_str(struct policydb *pdb, mls_range_t *range)
+{
+ char *low = NULL;
+ char *high = NULL;
+ char *range_str = NULL;
+
+ low = level_to_str(pdb, &range->level[0]);
+ if (!low) {
+ goto exit;
+ }
+
+ high = level_to_str(pdb, &range->level[1]);
+ if (!high) {
+ goto exit;
+ }
+
+ range_str = create_str("%s - %s", 2, low, high);
+
+exit:
+ free(low);
+ free(high);
+
+ return range_str;
+}
+
+struct map_range_trans_args {
+ struct policydb *pdb;
+ struct strs *strs;
+};
+
+static int map_range_trans_to_str(hashtab_key_t key, void *data, void *arg)
+{
+ range_trans_t *rt = (range_trans_t *)key;
+ mls_range_t *mls_range = data;
+ struct map_range_trans_args *map_args = arg;
+ struct policydb *pdb = map_args->pdb;
+ struct strs *strs = map_args->strs;
+ char *src, *tgt, *class, *range;
+ int rc;
+
+ src = pdb->p_type_val_to_name[rt->source_type - 1];
+ tgt = pdb->p_type_val_to_name[rt->target_type - 1];
+ class = pdb->p_class_val_to_name[rt->target_class - 1];
+ range = range_to_str(pdb, mls_range);
+ if (!range) {
+ rc = -1;
+ goto exit;
+ }
+
+ rc = strs_create_and_add(strs, "range_transition %s %s:%s %s;", 4,
+ src, tgt, class, range);
+ free(range);
+ if (rc != 0) {
+ goto exit;
+ }
+
+exit:
+ return rc;
+}
+
+static int write_range_trans_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct map_range_trans_args args;
+ struct strs *strs;
+ int rc = 0;
+
+ rc = strs_init(&strs, 100);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ args.pdb = pdb;
+ args.strs = strs;
+
+ rc = hashtab_map(pdb->range_tr, map_range_trans_to_str, &args);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ strs_sort(strs);
+ strs_write_each(strs, out);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing range transition rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_cond_av_list_to_conf(FILE *out, struct policydb *pdb, cond_av_list_t *cond_list, int indent)
+{
+ cond_av_list_t *cond_av;
+ avtab_ptr_t node;
+ uint32_t flavor;
+ avtab_key_t *key;
+ avtab_datum_t *datum;
+ struct strs *strs;
+ char *rule;
+ unsigned i;
+ int rc;
+
+ for (i = 0; i < AVTAB_FLAVORS_SZ; i++) {
+ flavor = avtab_flavors[i];
+ rc = strs_init(&strs, 64);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (cond_av = cond_list; cond_av != NULL; cond_av = cond_av->next) {
+ node = cond_av->node;
+ key = &node->key;
+ datum = &node->datum;
+ if (key->specified & flavor) {
+ rule = avtab_node_to_str(pdb, key, datum);
+ if (!rule) {
+ rc = -1;
+ goto exit;
+ }
+ rc = strs_add(strs, rule);
+ if (rc != 0) {
+ free(rule);
+ goto exit;
+ }
+ }
+ }
+
+ strs_sort(strs);
+ strs_write_each_indented(strs, out, indent);
+ strs_free_all(strs);
+ strs_destroy(&strs);
+ }
+
+ return 0;
+
+exit:
+ return rc;
+}
+
+struct cond_data {
+ char *expr;
+ struct cond_node *cond;
+};
+
+static int cond_node_cmp(const void *a, const void *b)
+{
+ const struct cond_data *aa = a;
+ const struct cond_data *bb = b;
+ return strcmp(aa->expr, bb->expr);
+}
+
+static int write_cond_nodes_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct cond_data *cond_data;
+ char *expr;
+ struct cond_node *cond;
+ unsigned i, num;
+ int rc = 0;
+
+ num = 0;
+ for (cond = pdb->cond_list; cond != NULL; cond = cond->next) {
+ num++;
+ }
+
+ if (num == 0) {
+ return 0;
+ }
+
+ cond_data = calloc(sizeof(struct cond_data), num);
+ if (!cond_data) {
+ rc = -1;
+ goto exit;
+ }
+
+ i = 0;
+ for (cond = pdb->cond_list; cond != NULL; cond = cond->next) {
+ cond_data[i].cond = cond;
+ expr = cond_expr_to_str(pdb, cond->expr);
+ if (!expr) {
+ num = i;
+ goto exit;
+ }
+ cond_data[i].expr = expr;
+ i++;
+ }
+
+ qsort(cond_data, num, sizeof(*cond_data), cond_node_cmp);
+
+ for (i=0; i<num; i++) {
+ expr = cond_data[i].expr;
+ cond = cond_data[i].cond;
+
+ sepol_printf(out, "if (%s) {\n", expr);
+
+ if (cond->true_list != NULL) {
+ rc = write_cond_av_list_to_conf(out, pdb, cond->true_list, 1);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+ if (cond->false_list != NULL) {
+ sepol_printf(out, "} else {\n");
+ rc = write_cond_av_list_to_conf(out, pdb, cond->false_list, 1);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ sepol_printf(out, "}\n");
+ }
+
+exit:
+ if (cond_data) {
+ for (i=0; i<num; i++) {
+ free(cond_data[i].expr);
+ }
+ free(cond_data);
+ }
+
+ if (rc != 0) {
+ sepol_log_err("Error writing conditional rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_role_decl_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct role_datum *role;
+ struct strs *strs;
+ char *name, *types, *p1, *p2;
+ unsigned i, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_roles.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ /* Start at 1 to skip object_r */
+ for (i=1; i < pdb->p_roles.nprim; i++) {
+ role = pdb->role_val_to_struct[i];
+ if (role && role->flavor == ROLE_ROLE) {
+ rc = strs_add(strs, pdb->p_role_val_to_name[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ strs_sort(strs);
+
+ num = strs_num_items(strs);
+
+ for (i=0; i<num; i++) {
+ name = strs_read_at_index(strs, i);
+ if (!name) {
+ continue;
+ }
+ sepol_printf(out, "role %s;\n", name);
+ }
+
+ for (i=0; i<num; i++) {
+ name = strs_read_at_index(strs, i);
+ if (!name) continue;
+ role = hashtab_search(pdb->p_roles.table, name);
+ if (!role) {
+ rc = -1;
+ goto exit;
+ }
+ if (ebitmap_cardinality(&role->types.types) == 0) continue;
+ types = ebitmap_to_str(&role->types.types, pdb->p_type_val_to_name, 1);
+ if (!types) {
+ rc = -1;
+ goto exit;
+ }
+ if (strlen(types) > 900) {
+ p1 = types;
+ while (p1) {
+ p2 = p1;
+ while (p2 - p1 < 600) {
+ p2 = strchr(p2, ' ');
+ if (!p2)
+ break;
+ p2++;
+ }
+ if (p2) {
+ *(p2-1) = '\0';
+ }
+ sepol_printf(out, "role %s types { %s };\n", name, p1);
+ p1 = p2;
+ }
+ } else {
+ sepol_printf(out, "role %s types { %s };\n", name, types);
+ }
+ free(types);
+ }
+
+exit:
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing role declarations to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_role_transition_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ role_trans_t *curr = pdb->role_tr;
+ struct strs *strs;
+ char *role, *type, *class, *new;
+ int rc = 0;
+
+ rc = strs_init(&strs, 32);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ while (curr) {
+ role = pdb->p_role_val_to_name[curr->role - 1];
+ type = pdb->p_type_val_to_name[curr->type - 1];
+ class = pdb->p_class_val_to_name[curr->tclass - 1];
+ new = pdb->p_role_val_to_name[curr->new_role - 1];
+
+ rc = strs_create_and_add(strs, "role_transition %s %s:%s %s;", 4,
+ role, type, class, new);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ curr = curr->next;
+ }
+
+ strs_sort(strs);
+ strs_write_each(strs, out);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing role transition rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_role_allow_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ role_allow_t *curr = pdb->role_allow;
+ struct strs *strs;
+ char *role, *new;
+ int rc = 0;
+
+ rc = strs_init(&strs, 32);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ while (curr) {
+ role = pdb->p_role_val_to_name[curr->role - 1];
+ new = pdb->p_role_val_to_name[curr->new_role - 1];
+
+ rc = strs_create_and_add(strs, "allow %s %s;", 2, role, new);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ curr = curr->next;
+ }
+
+ strs_sort(strs);
+ strs_write_each(strs, out);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing role allow rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_user_decl_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct user_datum *user;
+ struct strs *strs;
+ char *name, *roles, *level, *range;
+ unsigned i, num;
+ int rc = 0;
+
+ rc = strs_init(&strs, pdb->p_users.nprim);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (i=0; i < pdb->p_users.nprim; i++) {
+ rc = strs_add(strs, pdb->p_user_val_to_name[i]);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+ strs_sort(strs);
+
+ num = strs_num_items(strs);
+
+ for (i=0; i<num; i++) {
+ name = strs_read_at_index(strs, i);
+ if (!name) {
+ continue;
+ }
+ user = hashtab_search(pdb->p_users.table, name);
+ if (!user) {
+ rc = -1;
+ goto exit;
+ }
+ sepol_printf(out, "user %s", name);
+
+ if (ebitmap_cardinality(&user->roles.roles) > 0) {
+ roles = ebitmap_to_str(&user->roles.roles,
+ pdb->p_role_val_to_name, 1);
+ if (!roles) {
+ rc = -1;
+ goto exit;
+ }
+ if (strchr(roles, ' ')) {
+ sepol_printf(out, " roles { %s }", roles);
+ } else {
+ sepol_printf(out, " roles %s", roles);
+ }
+ free(roles);
+ }
+
+ if (pdb->mls) {
+ level = level_to_str(pdb, &user->exp_dfltlevel);
+ if (!level) {
+ rc = -1;
+ goto exit;
+ }
+ sepol_printf(out, " level %s", level);
+ free(level);
+
+ range = range_to_str(pdb, &user->exp_range);
+ if (!range) {
+ rc = -1;
+ goto exit;
+ }
+ sepol_printf(out, " range %s", range);
+ free(range);
+ }
+ sepol_printf(out, ";\n");
+ }
+
+ strs_destroy(&strs);
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing user declarations to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static char *context_to_str(struct policydb *pdb, struct context_struct *con)
+{
+ char *user, *role, *type, *range;
+ char *ctx = NULL;
+
+ user = pdb->p_user_val_to_name[con->user - 1];
+ role = pdb->p_role_val_to_name[con->role - 1];
+ type = pdb->p_type_val_to_name[con->type - 1];
+
+ if (pdb->mls) {
+ range = range_to_str(pdb, &con->range);
+ ctx = create_str("%s:%s:%s:%s", 4, user, role, type, range);
+ free(range);
+ } else {
+ ctx = create_str("%s:%s:%s", 3, user, role, type);
+ }
+
+ return ctx;
+}
+
+static int write_sid_context_rules_to_conf(FILE *out, struct policydb *pdb, const char *const *sid_to_str)
+{
+ struct ocontext *isid;
+ struct strs *strs;
+ const char *sid;
+ char *ctx, *rule;
+ unsigned i;
+ int rc;
+
+ rc = strs_init(&strs, 32);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (isid = pdb->ocontexts[0]; isid != NULL; isid = isid->next) {
+ i = isid->sid[0];
+ sid = sid_to_str[i];
+ ctx = context_to_str(pdb, &isid->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ rule = create_str("sid %s %s", 2, sid, ctx);
+ free(ctx);
+ if (!rule) {
+ rc = -1;
+ goto exit;
+ }
+
+ rc = strs_add_at_index(strs, rule, i);
+ if (rc != 0) {
+ free(rule);
+ goto exit;
+ }
+ }
+
+ strs_write_each(strs, out);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing sidcontext rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_selinux_isid_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ return write_sid_context_rules_to_conf(out, pdb, selinux_sid_to_str);
+}
+
+static int write_selinux_fsuse_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *fsuse;
+ const char *behavior;
+ char *name, *ctx;
+ int rc = 0;
+
+ for (fsuse = pdb->ocontexts[5]; fsuse != NULL; fsuse = fsuse->next) {
+ switch (fsuse->v.behavior) {
+ case SECURITY_FS_USE_XATTR: behavior = "xattr"; break;
+ case SECURITY_FS_USE_TRANS: behavior = "trans"; break;
+ case SECURITY_FS_USE_TASK: behavior = "task"; break;
+ default:
+ sepol_log_err("Unknown fsuse behavior: %i", fsuse->v.behavior);
+ rc = -1;
+ goto exit;
+ }
+
+ name = fsuse->u.name;
+ ctx = context_to_str(pdb, &fsuse->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "fs_use_%s %s %s;\n", behavior, name, ctx);
+
+ free(ctx);
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing fsuse rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_genfscon_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct genfs *genfs;
+ struct ocontext *ocon;
+ struct strs *strs;
+ char *fstype, *name, *ctx;
+ int rc;
+
+ rc = strs_init(&strs, 32);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ for (genfs = pdb->genfs; genfs != NULL; genfs = genfs->next) {
+ for (ocon = genfs->head; ocon != NULL; ocon = ocon->next) {
+ fstype = genfs->fstype;
+ name = ocon->u.name;
+
+ ctx = context_to_str(pdb, &ocon->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ rc = strs_create_and_add(strs, "genfscon %s %s %s", 3,
+ fstype, name, ctx);
+ free(ctx);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+ }
+
+ strs_sort(strs);
+ strs_write_each(strs, out);
+
+exit:
+ strs_free_all(strs);
+ strs_destroy(&strs);
+
+ if (rc != 0) {
+ sepol_log_err("Error writing genfscon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_selinux_port_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *portcon;
+ const char *protocol;
+ uint16_t low;
+ uint16_t high;
+ char low_high_str[44]; /* 2^64 <= 20 digits so "low-high" <= 44 chars */
+ char *ctx;
+ int rc = 0;
+
+ for (portcon = pdb->ocontexts[2]; portcon != NULL; portcon = portcon->next) {
+ switch (portcon->u.port.protocol) {
+ case IPPROTO_TCP: protocol = "tcp"; break;
+ case IPPROTO_UDP: protocol = "udp"; break;
+ case IPPROTO_DCCP: protocol = "dccp"; break;
+ default:
+ sepol_log_err("Unknown portcon protocol: %i", portcon->u.port.protocol);
+ rc = -1;
+ goto exit;
+ }
+
+ low = portcon->u.port.low_port;
+ high = portcon->u.port.high_port;
+ if (low == high) {
+ rc = snprintf(low_high_str, 44, "%u", low);
+ } else {
+ rc = snprintf(low_high_str, 44, "%u-%u", low, high);
+ }
+ if (rc < 0 || rc >= 44) {
+ rc = -1;
+ goto exit;
+ }
+
+ ctx = context_to_str(pdb, &portcon->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "portcon %s %s %s\n", protocol, low_high_str, ctx);
+
+ free(ctx);
+ }
+
+ rc = 0;
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing portcon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_selinux_netif_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *netif;
+ char *name, *ctx1, *ctx2;
+ int rc = 0;
+
+ for (netif = pdb->ocontexts[3]; netif != NULL; netif = netif->next) {
+ name = netif->u.name;
+ ctx1 = context_to_str(pdb, &netif->context[0]);
+ if (!ctx1) {
+ rc = -1;
+ goto exit;
+ }
+ ctx2 = context_to_str(pdb, &netif->context[1]);
+ if (!ctx2) {
+ free(ctx1);
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "netifcon %s %s %s\n", name, ctx1, ctx2);
+
+ free(ctx1);
+ free(ctx2);
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing netifcon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_selinux_node_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *node;
+ char addr[INET_ADDRSTRLEN];
+ char mask[INET_ADDRSTRLEN];
+ char *ctx;
+ int rc = 0;
+
+ for (node = pdb->ocontexts[4]; node != NULL; node = node->next) {
+ if (inet_ntop(AF_INET, &node->u.node.addr, addr, INET_ADDRSTRLEN) == NULL) {
+ sepol_log_err("Nodecon address is invalid: %s", strerror(errno));
+ rc = -1;
+ goto exit;
+ }
+
+ if (inet_ntop(AF_INET, &node->u.node.mask, mask, INET_ADDRSTRLEN) == NULL) {
+ sepol_log_err("Nodecon mask is invalid: %s", strerror(errno));
+ rc = -1;
+ goto exit;
+ }
+
+ ctx = context_to_str(pdb, &node->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "nodecon %s %s %s\n", addr, mask, ctx);
+
+ free(ctx);
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing nodecon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+
+static int write_selinux_node6_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *node6;
+ char addr[INET6_ADDRSTRLEN];
+ char mask[INET6_ADDRSTRLEN];
+ char *ctx;
+ int rc = 0;
+
+ for (node6 = pdb->ocontexts[6]; node6 != NULL; node6 = node6->next) {
+ if (inet_ntop(AF_INET6, &node6->u.node6.addr, addr, INET6_ADDRSTRLEN) == NULL) {
+ sepol_log_err("Nodecon address is invalid: %s", strerror(errno));
+ rc = -1;
+ goto exit;
+ }
+
+ if (inet_ntop(AF_INET6, &node6->u.node6.mask, mask, INET6_ADDRSTRLEN) == NULL) {
+ sepol_log_err("Nodecon mask is invalid: %s", strerror(errno));
+ rc = -1;
+ goto exit;
+ }
+
+ ctx = context_to_str(pdb, &node6->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "nodecon %s %s %s\n", addr, mask, ctx);
+
+ free(ctx);
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing nodecon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_xen_isid_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ return write_sid_context_rules_to_conf(out, pdb, xen_sid_to_str);
+}
+
+
+static int write_xen_pirq_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *pirq;
+ char pirq_str[21]; /* 2^64-1 <= 20 digits */
+ char *ctx;
+ int rc = 0;
+
+ for (pirq = pdb->ocontexts[1]; pirq != NULL; pirq = pirq->next) {
+ rc = snprintf(pirq_str, 21, "%i", pirq->u.pirq);
+ if (rc < 0 || rc >= 21) {
+ fprintf(stderr,"error1\n");
+ rc = -1;
+ goto exit;
+ }
+
+ ctx = context_to_str(pdb, &pirq->context[0]);
+ if (!ctx) {
+ rc = -1;
+ fprintf(stderr,"error2\n");
+ goto exit;
+ }
+
+ sepol_printf(out, "pirqcon %s %s\n", pirq_str, ctx);
+
+ free(ctx);
+ }
+
+ rc = 0;
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing pirqcon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_xen_ioport_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *ioport;
+ uint32_t low;
+ uint32_t high;
+ char low_high_str[40]; /* 2^64-1 <= 16 digits (hex) so low-high < 40 chars */
+ char *ctx;
+ int rc = 0;
+
+ for (ioport = pdb->ocontexts[2]; ioport != NULL; ioport = ioport->next) {
+ low = ioport->u.ioport.low_ioport;
+ high = ioport->u.ioport.high_ioport;
+ if (low == high) {
+ rc = snprintf(low_high_str, 40, "0x%x", low);
+ } else {
+ rc = snprintf(low_high_str, 40, "0x%x-0x%x", low, high);
+ }
+ if (rc < 0 || rc >= 40) {
+ rc = -1;
+ goto exit;
+ }
+
+ ctx = context_to_str(pdb, &ioport->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "ioportcon %s %s\n", low_high_str, ctx);
+
+ free(ctx);
+ }
+
+ rc = 0;
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing ioportcon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_xen_iomem_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *iomem;
+ uint64_t low;
+ uint64_t high;
+ char low_high_str[40]; /* 2^64-1 <= 16 digits (hex) so low-high < 40 chars */
+ char *ctx;
+ int rc = 0;
+
+ for (iomem = pdb->ocontexts[3]; iomem != NULL; iomem = iomem->next) {
+ low = iomem->u.iomem.low_iomem;
+ high = iomem->u.iomem.high_iomem;
+ if (low == high) {
+ rc = snprintf(low_high_str, 40, "0x%"PRIx64, low);
+ } else {
+ rc = snprintf(low_high_str, 40, "0x%"PRIx64"-0x%"PRIx64, low, high);
+ }
+ if (rc < 0 || rc >= 40) {
+ rc = -1;
+ goto exit;
+ }
+
+ ctx = context_to_str(pdb, &iomem->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "iomemcon %s %s\n", low_high_str, ctx);
+
+ free(ctx);
+ }
+
+ rc = 0;
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing iomemcon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_xen_pcidevice_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *pcid;
+ char device_str[20]; /* 2^64-1 <= 16 digits (hex) so < 19 chars */
+ char *ctx;
+ int rc = 0;
+
+ for (pcid = pdb->ocontexts[4]; pcid != NULL; pcid = pcid->next) {
+ rc = snprintf(device_str, 20, "0x%lx", (unsigned long)pcid->u.device);
+ if (rc < 0 || rc >= 20) {
+ rc = -1;
+ goto exit;
+ }
+
+ ctx = context_to_str(pdb, &pcid->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "pcidevicecon %s %s\n", device_str, ctx);
+
+ free(ctx);
+ }
+
+ rc = 0;
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing pcidevicecon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+static int write_xen_devicetree_rules_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct ocontext *dtree;
+ char *name, *ctx;
+ int rc = 0;
+
+ for (dtree = pdb->ocontexts[5]; dtree != NULL; dtree = dtree->next) {
+ name = dtree->u.name;
+ ctx = context_to_str(pdb, &dtree->context[0]);
+ if (!ctx) {
+ rc = -1;
+ goto exit;
+ }
+
+ sepol_printf(out, "devicetreecon %s %s\n", name, ctx);
+
+ free(ctx);
+ }
+
+exit:
+ if (rc != 0) {
+ sepol_log_err("Error writing devicetreecon rules to policy.conf\n");
+ }
+
+ return rc;
+}
+
+int sepol_kernel_policydb_to_conf(FILE *out, struct policydb *pdb)
+{
+ struct strs *mls_constraints = NULL;
+ struct strs *non_mls_constraints = NULL;
+ int rc = 0;
+
+ rc = strs_init(&mls_constraints, 32);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = strs_init(&non_mls_constraints, 32);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ if (pdb == NULL) {
+ sepol_log_err("No policy");
+ rc = -1;
+ goto exit;
+ }
+
+ if (pdb->policy_type != SEPOL_POLICY_KERN) {
+ sepol_log_err("Policy is not a kernel policy");
+ rc = -1;
+ goto exit;
+ }
+
+ rc = constraint_rules_to_strs(pdb, mls_constraints, non_mls_constraints);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_handle_unknown_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_class_decl_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_sid_decl_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_class_and_common_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_default_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_mls_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ strs_write_each(mls_constraints, out);
+
+ rc = write_polcap_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_type_attributes_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_role_attributes_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_boolean_decl_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_type_decl_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_type_alias_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_type_bounds_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_type_attribute_sets_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_type_permissive_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_avtab_to_conf(out, pdb, 0);
+ if (rc != 0) {
+ goto exit;
+ }
+ write_filename_trans_rules_to_conf(out, pdb);
+
+ if (pdb->mls) {
+ rc = write_range_trans_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+ rc = write_cond_nodes_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_role_decl_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_role_transition_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_role_allow_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_user_decl_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ strs_write_each(non_mls_constraints, out);
+
+ rc = sort_ocontexts(pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ if (pdb->target_platform == SEPOL_TARGET_SELINUX) {
+ rc = write_selinux_isid_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_selinux_fsuse_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_genfscon_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_selinux_port_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_selinux_netif_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_selinux_node_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_selinux_node6_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+ } else if (pdb->target_platform == SEPOL_TARGET_XEN) {
+ rc = write_xen_isid_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_genfscon_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_xen_pirq_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_xen_iomem_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_xen_ioport_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_xen_pcidevice_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+
+ rc = write_xen_devicetree_rules_to_conf(out, pdb);
+ if (rc != 0) {
+ goto exit;
+ }
+ }
+
+exit:
+ strs_free_all(mls_constraints);
+ strs_destroy(&mls_constraints);
+ strs_free_all(non_mls_constraints);
+ strs_destroy(&non_mls_constraints);
+
+ return rc;
+}
diff --git a/libsepol/src/libsepol.map.in b/libsepol/src/libsepol.map.in
index b78a3b3..5e68fcb 100644
--- a/libsepol/src/libsepol.map.in
+++ b/libsepol/src/libsepol.map.in
@@ -50,4 +50,5 @@ LIBSEPOL_1.1 {
sepol_module_package_to_cil;
sepol_module_policydb_to_cil;
sepol_kernel_policydb_to_cil;
+ sepol_kernel_policydb_to_conf;
} LIBSEPOL_1.0;
--
2.7.4
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