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/* Copyright (C) 2014 GSS-NTLMSSP contributors, see COPYING for license */
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gssapi/gssapi.h>
#include <gssapi/gssapi_ext.h>
#include "gss_ntlmssp.h"
#define UNKNOWN_ERROR "Unknown Error"
uint32_t gssntlm_display_status(uint32_t *minor_status,
uint32_t status_value,
int status_type,
gss_OID mech_type,
uint32_t *message_context,
gss_buffer_t status_string)
{
/* if you can't say it in ~6 lines of text we don't bother */
char buf[512];
int err;
if (!minor_status || !status_string) {
*minor_status = EINVAL;
return GSS_S_CALL_INACCESSIBLE_READ;
}
if (status_type != GSS_C_MECH_CODE) {
*minor_status = EINVAL;
return GSS_S_BAD_STATUS;
}
*minor_status = 0;
*message_context = 0;
status_string->length = 0;
status_string->value = NULL;
if (!status_value) {
/* There must have been *some* error. No point saying 'Success' */
goto done;
}
/* handle both XSI and GNU specific varints of strerror_r */
errno = 0;
#if ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE)
/* XSI version */
err = strerror_r(status_value, buf, 400);
/* The XSI-compliant strerror_r() function returns 0 on success.
* On error, a (positive) error number is returned (since glibc
* 2.13), or -1 is returned and errno is set to indicate the
* error (glibc versions before 2.13). */
#else
{
char *ret;
ret = strerror_r(errnum, buf, 400);
if (ret == NULL) {
err = errno;
} else {
if (ret != buf) {
memmove(buf, ret, strlen(ret) + 1);
}
err = 0;
}
}
#endif
if (err == -1) err = errno;
switch (err) {
case ERANGE:
/* Screw it, they can have a truncated version */
case 0:
status_string->value = strdup(buf);
break;
default:
break;
}
done:
if (!status_string->value) {
status_string->value = strdup(UNKNOWN_ERROR);
if (!status_string->value) {
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
}
status_string->length = strlen(status_string->value);
return GSS_S_COMPLETE;
}
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