Copyright (C) 2006 OpenWrt.org
-diff -urN busybox.old/networking/httpd.c busybox.dev/networking/httpd.c
---- busybox.old/networking/httpd.c 2004-10-08 10:03:29.000000000 +0200
-+++ busybox.dev/networking/httpd.c 2006-02-04 01:54:19.688016250 +0100
-@@ -1467,12 +1467,22 @@
- {
- char *cipher;
- char *pp;
-+ char *ppnew = NULL;
-+ struct passwd *pwd = NULL;
+--- a/networking/httpd.c
++++ b/networking/httpd.c
+@@ -1717,21 +1717,32 @@ static int check_user_passwd(const char
- if(strncmp(p, request, u-request) != 0) {
- /* user uncompared */
- continue;
- }
- pp = strchr(p, ':');
-+ if(pp && pp[1] == '$' && pp[2] == 'p' &&
-+ pp[3] == '$' && pp[4] &&
-+ (pwd = getpwnam(&pp[4])) != NULL) {
-+ ppnew = malloc(5 + strlen(pwd->pw_passwd));
-+ ppnew[0] = ':';
-+ strcpy(ppnew + 1, pwd->pw_passwd);
-+ pp = ppnew;
-+ }
- if(pp && pp[1] == '$' && pp[2] == '1' &&
- pp[3] == '$' && pp[4]) {
- pp++;
-@@ -1482,6 +1492,10 @@
- /* unauthorized */
- continue;
- }
-+ if (ppnew) {
-+ free(ppnew);
-+ ppnew = NULL;
-+ }
- }
- #endif
- if (strcmp(p, request) == 0) {
+ if (ENABLE_FEATURE_HTTPD_AUTH_MD5) {
+ char *md5_passwd;
++ int user_len_p1;
+
+ md5_passwd = strchr(cur->after_colon, ':');
+- if (md5_passwd && md5_passwd[1] == '$' && md5_passwd[2] == '1'
++ user_len_p1 = md5_passwd + 1 - cur->after_colon;
++ if (md5_passwd && !strncmp(md5_passwd + 1, "$p$", 3)) {
++ struct passwd *pwd = NULL;
++
++ pwd = getpwnam(&md5_passwd[4]);
++ if(!pwd->pw_passwd || !pwd->pw_passwd[0] || pwd->pw_passwd[0] == '!')
++ return 1;
++
++ md5_passwd = pwd->pw_passwd;
++ goto check_md5_pw;
++ } else if (md5_passwd && md5_passwd[1] == '$' && md5_passwd[2] == '1'
+ && md5_passwd[3] == '$' && md5_passwd[4]
+ ) {
+ char *encrypted;
+- int r, user_len_p1;
++ int r;
+
+ md5_passwd++;
+- user_len_p1 = md5_passwd - cur->after_colon;
+ /* comparing "user:" */
+ if (strncmp(cur->after_colon, user_and_passwd, user_len_p1) != 0) {
+ continue;
+ }
+
++check_md5_pw:
+ encrypted = pw_encrypt(
+ user_and_passwd + user_len_p1 /* cleartext pwd from user */,
+ md5_passwd /*salt */, 1 /* cleanup */);