utils.c

		} else if (!strcasecmp(key, "qop") && !strcasecmp(val, "auth")) {
			d->qop = 1;
		} else if (!strcasecmp(key, "nc")) {
			unsigned long u;
			if (sscanf(val, "%lx", &u) != 1) {
				ast_log(LOG_WARNING, "Incorrect Digest nc value: \"%s\".\n", val);
				return -1;
			}
			ast_string_field_set(d, nc, val);
		}
	}
	ast_free(str);

	/* Digest checkout */
	if (ast_strlen_zero(d->realm) || ast_strlen_zero(d->nonce)) {
		/* "realm" and "nonce" MUST be always exist */
		return -1;
	}

	if (!request) {
		/* Additional check for Digest response */
		if (ast_strlen_zero(d->username) || ast_strlen_zero(d->uri) || ast_strlen_zero(d->response)) {
			return -1;
		}

		if (pedantic && d->qop && (ast_strlen_zero(d->cnonce) || ast_strlen_zero(d->nc))) {
			return -1;
		}
	}

	return 0;
}

#ifndef __AST_DEBUG_MALLOC
int _ast_asprintf(char **ret, const char *file, int lineno, const char *func, const char *fmt, ...)
{
	int res;
	va_list ap;

	va_start(ap, fmt);
	if ((res = vasprintf(ret, fmt, ap)) == -1) {
		MALLOC_FAILURE_MSG;
	}
	va_end(ap);

	return res;
}
#endif