Function replace_env

modules/exec/exec_hf.c:339–381

}

environment_t *replace_env(struct hf_wrapper *list)
{
	int var_cnt;
	char **cp;
	struct hf_wrapper *w;
	char **new_env;
	int i;
	environment_t *backup_env;

	backup_env=(environment_t *)pkg_malloc(sizeof(environment_t));
	if (!backup_env) {
		LM_ERR("no pkg mem for backup env\n");
		return 0;
	}

	/* count length of current env list */
	var_cnt=0;
	for (cp=environ; *cp; cp++) var_cnt++;
	backup_env->old_cnt=var_cnt;
	/* count length of our extensions */
	for(w=list;w;w=w->next_other) var_cnt++;
	new_env=pkg_malloc((var_cnt+1)*sizeof(char *));
	if (!new_env) {
		LM_ERR("no pkg mem\n");
		return 0;
	}
	/* put all var pointers into new environment */
	i=0;
	for (cp=environ; *cp; cp++) { /* replicate old env */
		new_env[i]=*cp;
		i++;
	}
	for (w=list;w;w=w->next_other) { /* append new env */
		new_env[i]=w->envvar;
		i++;
	}
	new_env[i]=0; /* zero termination */
	/* install new environment */
	backup_env->env=environ;
	environ=new_env;
	/* return previous environment */
	return backup_env;
}

void unset_env(environment_t *backup_env)
{