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feat: switch provider addressing from RVA to absolute, add pointer expansion tests

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This commit is contained in:
IChooseYou
2026-02-18 13:07:48 -07:00
parent fa0d9a377b
commit 26217f5de8
20 changed files with 813 additions and 173 deletions
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16
plugins/ProcessMemory/ProcessMemoryPlugin.cpp
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@@ -65,7 +65,7 @@ bool ProcessMemoryProvider::read(uint64_t addr, void* buf, int len) const
if (!m_handle || len <= 0) return false;
SIZE_T bytesRead = 0;
ReadProcessMemory(m_handle, (LPCVOID)(m_base + addr), buf, (SIZE_T)len, &bytesRead);
ReadProcessMemory(m_handle, (LPCVOID)(addr), buf, (SIZE_T)len, &bytesRead);
if ((int)bytesRead < len)
memset((char*)buf + bytesRead, 0, len - bytesRead);
return bytesRead > 0;
@@ -76,7 +76,7 @@ bool ProcessMemoryProvider::write(uint64_t addr, const void* buf, int len)
if (!m_handle || !m_writable || len <= 0) return false;
SIZE_T bytesWritten = 0;
if (WriteProcessMemory(m_handle, (LPVOID)(m_base + addr), buf, (SIZE_T)len, &bytesWritten))
if (WriteProcessMemory(m_handle, (LPVOID)(addr), buf, (SIZE_T)len, &bytesWritten))
return bytesWritten == (SIZE_T)len;
return false;
}
@@ -156,15 +156,13 @@ bool ProcessMemoryProvider::read(uint64_t addr, void* buf, int len) const
{
if (m_fd < 0 || len <= 0) return false;
uint64_t absAddr = m_base + addr;
// Try process_vm_readv first (faster, no fd seek contention)
struct iovec local;
local.iov_base = buf;
local.iov_len = static_cast<size_t>(len);
struct iovec remote;
remote.iov_base = reinterpret_cast<void*>(absAddr);
remote.iov_base = reinterpret_cast<void*>(addr);
remote.iov_len = static_cast<size_t>(len);
ssize_t nread = process_vm_readv(m_pid, &local, 1, &remote, 1, 0);
@@ -172,7 +170,7 @@ bool ProcessMemoryProvider::read(uint64_t addr, void* buf, int len) const
return true;
// Fallback: pread on /proc/<pid>/mem
nread = ::pread(m_fd, buf, static_cast<size_t>(len), static_cast<off_t>(absAddr));
nread = ::pread(m_fd, buf, static_cast<size_t>(len), static_cast<off_t>(addr));
return nread == static_cast<ssize_t>(len);
}
@@ -180,15 +178,13 @@ bool ProcessMemoryProvider::write(uint64_t addr, const void* buf, int len)
{
if (m_fd < 0 || !m_writable || len <= 0) return false;
uint64_t absAddr = m_base + addr;
// Try process_vm_writev first
struct iovec local;
local.iov_base = const_cast<void*>(buf);
local.iov_len = static_cast<size_t>(len);
struct iovec remote;
remote.iov_base = reinterpret_cast<void*>(absAddr);
remote.iov_base = reinterpret_cast<void*>(addr);
remote.iov_len = static_cast<size_t>(len);
ssize_t nwritten = process_vm_writev(m_pid, &local, 1, &remote, 1, 0);
@@ -196,7 +192,7 @@ bool ProcessMemoryProvider::write(uint64_t addr, const void* buf, int len)
return true;
// Fallback: pwrite on /proc/<pid>/mem
nwritten = ::pwrite(m_fd, buf, static_cast<size_t>(len), static_cast<off_t>(absAddr));
nwritten = ::pwrite(m_fd, buf, static_cast<size_t>(len), static_cast<off_t>(addr));
return nwritten == static_cast<ssize_t>(len);
}