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Code Issues Releases Wiki Activity

ntlm_wb: Avoid invoking ntlm_auth helper with empty username

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This commit is contained in:
David Woodhouse 2014-07-11 11:31:40 +01:00 committed by Daniel Stenberg
parent 9008f3d564
commit 223612afa2
1 changed files with 31 additions and 0 deletions
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31
lib/curl_ntlm_wb.c
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@ -39,6 +39,9 @@
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#include "urldata.h"
#include "sendf.h"
@ -117,6 +120,10 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
char *slash, *domain = NULL;
const char *ntlm_auth = NULL;
char *ntlm_auth_alloc = NULL;
#if defined(HAVE_GETPWUID_R) && defined(HAVE_GETEUID)
struct passwd pw, *pw_res;
char pwbuf[1024];
#endif
int error;
/* Return if communication with ntlm_auth already set up */
@ -125,6 +132,30 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
return CURLE_OK;
username = userp;
/* The real ntlm_auth really doesn't like being invoked with an
empty username. It won't make inferences for itself, and expects
the client to do so (mostly because it's really designed for
servers like squid to use for auth, and client support is an
afterthought for it). So try hard to provide a suitable username
if we don't already have one. But if we can't, provide the
empty one anyway. Perhaps they have an implementation of the
ntlm_auth helper which *doesn't* need it so we might as well try */
if(!username || !username[0]) {
username = getenv("NTLMUSER");
if(!username || !username[0])
username = getenv("LOGNAME");
if(!username || !username[0])
username = getenv("USER");
#if defined(HAVE_GETPWUID_R) && defined(HAVE_GETEUID)
if((!username || !username[0]) &&
!getpwuid_r(geteuid(), &pw, pwbuf, sizeof(pwbuf), &pw_res) &&
pw_res) {
username = pw.pw_name;
}
#endif
if(!username || !username[0])
username = userp;
}
slash = strpbrk(username, "\\/");
if(slash) {
if((domain = strdup(username)) == NULL)