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Add -f option to support transition rules

This commit is contained in:
Pierre-Hugues Husson 2015-10-25 16:20:42 +01:00
parent 22fa57b82c
commit 01ddd8eaa8
2 changed files with 59 additions and 3 deletions
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sepolicy-inject Executable file
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sepolicy-inject.c
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@ -157,6 +157,55 @@ int add_rule(char *s, char *t, char *c, char *p, policydb_t *policy) {
return 0;
}
int add_transition(char *srcS, char *fconS, char *tgtS, char *c, policydb_t *policy) {
type_datum_t *src, *tgt, *fcon;
class_datum_t *cls;
avtab_datum_t *av;
avtab_key_t key;
src = hashtab_search(policy->p_types.table, srcS);
if (src == NULL) {
fprintf(stderr, "source type %s does not exist\n", srcS);
return 1;
}
tgt = hashtab_search(policy->p_types.table, tgtS);
if (tgt == NULL) {
fprintf(stderr, "target type %s does not exist\n", tgtS);
return 1;
}
cls = hashtab_search(policy->p_classes.table, c);
if (cls == NULL) {
fprintf(stderr, "class %s does not exist\n", c);
return 1;
}
fcon = hashtab_search(policy->p_types.table, fconS);
if (cls == NULL) {
fprintf(stderr, "class %s does not exist\n", fconS);
return 1;
}
key.source_type = src->s.value;
key.target_type = fcon->s.value;
key.target_class = cls->s.value;
key.specified = AVTAB_TRANSITION;
av = avtab_search(&policy->te_avtab, &key);
if (av == NULL) {
av = cmalloc(sizeof av);
av->data = tgt->s.value;
int ret = avtab_insert(&policy->te_avtab, &key, av);
if (ret) {
fprintf(stderr, "Error inserting into avtab\n");
return 1;
}
} else {
fprintf(stderr, "Warning, rule already defined! Won't override.\n");
fprintf(stderr, "Previous value = %d, wanted value = %d\n", av->data, tgt->s.value);
}
return 0;
}
int load_policy(char *filename, policydb_t *policydb, struct policy_file *pf) {
int fd;
@ -203,7 +252,8 @@ int load_policy(char *filename, policydb_t *policydb, struct policy_file *pf) {
int main(int argc, char **argv)
{
char *policy = NULL, *source = NULL, *target = NULL, *class = NULL, *perm = NULL, *outfile = NULL, *permissive = NULL;
char *policy = NULL, *source = NULL, *target = NULL, *class = NULL, *perm = NULL;
char *fcon = NULL, *outfile = NULL, *permissive = NULL;
policydb_t policydb;
struct policy_file pf, outpf;
sidtab_t sidtab;
@ -217,6 +267,7 @@ int main(int argc, char **argv)
{"target", required_argument, NULL, 't'},
{"class", required_argument, NULL, 'c'},
{"perm", required_argument, NULL, 'p'},
{"fcon", required_argument, NULL, 'f'},
{"policy", required_argument, NULL, 'P'},
{"output", required_argument, NULL, 'o'},
{"permissive", required_argument, NULL, 'Z'},
@ -224,8 +275,11 @@ int main(int argc, char **argv)
{NULL, 0, NULL, 0}
};
while ((ch = getopt_long(argc, argv, "s:t:c:p:P:o:Z:z:", long_options, NULL)) != -1) {
while ((ch = getopt_long(argc, argv, "ef:s:t:c:p:P:o:Z:z:", long_options, NULL)) != -1) {
switch (ch) {
case 'f':
fcon = optarg;
break;
case 's':
source = optarg;
break;
@ -257,7 +311,7 @@ int main(int argc, char **argv)
}
}
if (((!source || !target || !class || !perm) && !permissive) || !policy)
if (((!source || !target || !class || !perm) && !permissive && !fcon) || !policy)
usage(argv[0]);
if(!outfile)
@ -286,6 +340,8 @@ int main(int argc, char **argv)
fprintf(stderr, "Could not set bit in permissive map\n");
return 1;
}
} else if(fcon) {
add_transition(source, fcon, target, class, &policydb);
} else {
create_domain(source, &policydb);
if (add_rule(source, target, class, perm, &policydb)) {