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Code Issues Releases Wiki Activity

parser: fix leaks from variable refactoring

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Fix issues introduced in coverity's snapshot 89167
- CID 532796: (#4 of 4): Resource leak (RESOURCE_LEAK)

Signed-off-by: Georgia Garcia <georgia.garcia@canonical.com>
This commit is contained in:
Georgia Garcia 2025-07-18 14:26:35 -03:00
parent e4f3ef72ab
commit efb13aac0a
3 changed files with 25 additions and 10 deletions
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18
parser/parser_variable.c
View File

@ -140,6 +140,7 @@ int process_profile_variables(Profile *prof)
int error = 0;
variable *saved_exec_path = NULL;
variable *saved_attach_path = NULL;
variable *tmp = NULL;
/* needs to be before PROFILE_NAME_VARIABLE so that variable will
* have the correct name
@ -185,18 +186,25 @@ cleanup:
* don't support that yet.
*/
if (prof->attachment) {
symtab::delete_var(PROFILE_EXEC_VAR);
if (saved_exec_path)
tmp = symtab::delete_var(PROFILE_EXEC_VAR);
delete tmp;
if (saved_exec_path) {
symtab::add_var(*saved_exec_path);
delete saved_exec_path;
}
}
cleanup_attach:
if (prof->attachment) {
symtab::delete_var(PROFILE_ATTACH_VAR);
if (saved_attach_path)
tmp = symtab::delete_var(PROFILE_ATTACH_VAR);
delete tmp;
if (saved_attach_path) {
symtab::add_var(*saved_attach_path);
delete saved_attach_path;
}
}
cleanup_name:
symtab::delete_var(PROFILE_NAME_VARIABLE);
tmp = symtab::delete_var(PROFILE_NAME_VARIABLE);
delete tmp;
out:
return error;

13
parser/symtab.cc
View File

@ -139,13 +139,16 @@ variable *symtab::get_set_var(const char *name)
char *var_name = variable::process_var(name);
variable *var = lookup_existing_symbol(var_name);
if (!var) {
return var;
goto out;
}
if (var->type != sd_set) {
PERROR("Variable %s is not a set variable\n", var_name);
return nullptr;
var = nullptr;
goto out;
}
var->expand_variable();
out:
free(var_name);
return var;
}
@ -154,12 +157,14 @@ variable *symtab::get_boolean_var(const char *name)
char *var_name = variable::process_var(name);
variable *var = lookup_existing_symbol(var_name);
if (!var) {
return var;
goto out;
}
if (var->type != sd_boolean) {
PERROR("Variable %s is not a boolean variable\n", var_name);
return nullptr;
var = nullptr;
goto out;
}
out:
free(var_name);
return var;
}

4
parser/variable.cc
View File

@ -265,6 +265,7 @@ int variable::expand_by_alternation(char **name)
int variable::expand_variable()
{
char *name = NULL;
int rc = 0;
if (type == sd_boolean) {
@ -290,7 +291,7 @@ int variable::expand_variable()
expanded.insert(value); /* no var left to expand */
continue;
}
char *name = variable::process_var(var.c_str());
name = variable::process_var(var.c_str());
variable *ref = symtab::lookup_existing_symbol(name);
if (!ref) {
PERROR("Failed to find declaration for: %s\n", var.c_str());
@ -321,6 +322,7 @@ int variable::expand_variable()
}
out:
free(name);
expanding = false;
return rc;
}