111: def send_query(query)
112: res = nil
113: filemap = 0
114: ptr = nil
115: id = DL::PtrData.malloc(DL.sizeof("L"))
116:
117: mapname = "PageantRequest%08x\000" % Win.getCurrentThreadId()
118: filemap = Win.createFileMapping(Win::INVALID_HANDLE_VALUE,
119: Win::NULL,
120: Win::PAGE_READWRITE, 0,
121: AGENT_MAX_MSGLEN, mapname)
122: if filemap == 0
123: raise Net::SSH::Exception,
124: "Creation of file mapping failed"
125: end
126:
127: ptr = Win.mapViewOfFile(filemap, Win::FILE_MAP_WRITE, 0, 0,
128: AGENT_MAX_MSGLEN)
129:
130: if ptr.nil? || ptr.null?
131: raise Net::SSH::Exception, "Mapping of file failed"
132: end
133:
134: ptr[0] = query
135:
136: cds = [AGENT_COPYDATA_ID, mapname.size + 1, mapname].
137: pack("LLp").to_ptr
138: succ = Win.sendMessageTimeout(@win, Win::WM_COPYDATA, Win::NULL,
139: cds, Win::SMTO_NORMAL, 5000, id)
140:
141: if succ > 0
142: retlen = 4 + ptr.to_s(4).unpack("N")[0]
143: res = ptr.to_s(retlen)
144: end
145:
146: return res
147: ensure
148: Win.unmapViewOfFile(ptr) unless ptr.nil? || ptr.null?
149: Win.closeHandle(filemap) if filemap != 0
150: end