-static char **
-copyenv(const char **oldenvp, struct rule *rule)
-{
- const char *safeset[] = {
- "DISPLAY", "HOME", "LOGNAME", "MAIL", "SHELL",
- "PATH", "TERM", "USER", "USERNAME",
- NULL
- };
- const char *badset[] = {
- "ENV",
- NULL
- };
- char **envp;
- const char **extra;
- int ei;
- int i, ii, j, jj;
- int nsafe, nbad;
- int nextras = 0;
-
- nbad = arraylen(badset);
- if ((rule->options & KEEPENV) && !rule->envlist) {
- j = arraylen(oldenvp);
- envp = reallocarray(NULL, j + 1, sizeof(char *));
- if (!envp)
- err(1, "reallocarray");
- for (ii = i = 0; i < j; i++) {
- for (jj = 0; jj < nbad; jj++) {
- size_t len = strlen(badset[jj]);
- if (strncmp(oldenvp[i], badset[jj], len) == 0) {
- break;
- }
- }
- if (jj == nbad) {
- if (!(envp[ii] = strdup(oldenvp[i])))
- err(1, "strdup");
- ii++;
- }
- }
- envp[ii] = NULL;
- return envp;
- }