Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 213 insertions, 0 deletions

diff --git a/vendor/object/src/read/pe/data_directory.rs b/vendor/object/src/read/pe/data_directory.rs
new file mode 100644
index 0000000..a17179f
--- /dev/null
+++ b/vendor/object/src/read/pe/data_directory.rs
@@ -0,0 +1,213 @@
+use core::slice;
+
+use crate::read::{Error, ReadError, ReadRef, Result};
+use crate::{pe, LittleEndian as LE};
+
+use super::{
+    DelayLoadImportTable, ExportTable, ImportTable, RelocationBlockIterator, ResourceDirectory,
+    SectionTable,
+};
+
+/// The table of data directories in a PE file.
+///
+/// Returned by [`ImageNtHeaders::parse`](super::ImageNtHeaders::parse).
+#[derive(Debug, Clone, Copy)]
+pub struct DataDirectories<'data> {
+    entries: &'data [pe::ImageDataDirectory],
+}
+
+impl<'data> DataDirectories<'data> {
+    /// Parse the data directory table.
+    ///
+    /// `data` must be the remaining optional data following the
+    /// [optional header](pe::ImageOptionalHeader64).  `number` must be from the
+    /// [`number_of_rva_and_sizes`](pe::ImageOptionalHeader64::number_of_rva_and_sizes)
+    /// field of the optional header.
+    pub fn parse(data: &'data [u8], number: u32) -> Result<Self> {
+        let entries = data
+            .read_slice_at(0, number as usize)
+            .read_error("Invalid PE number of RVA and sizes")?;
+        Ok(DataDirectories { entries })
+    }
+
+    /// The number of data directories.
+    #[allow(clippy::len_without_is_empty)]
+    pub fn len(&self) -> usize {
+        self.entries.len()
+    }
+
+    /// Iterator over the data directories.
+    pub fn iter(&self) -> slice::Iter<'data, pe::ImageDataDirectory> {
+        self.entries.iter()
+    }
+
+    /// Iterator which gives the directories as well as their index (one of the IMAGE_DIRECTORY_ENTRY_* constants).
+    pub fn enumerate(&self) -> core::iter::Enumerate<slice::Iter<'data, pe::ImageDataDirectory>> {
+        self.entries.iter().enumerate()
+    }
+
+    /// Returns the data directory at the given index.
+    ///
+    /// Index should be one of the `IMAGE_DIRECTORY_ENTRY_*` constants.
+    ///
+    /// Returns `None` if the index is larger than the table size,
+    /// or if the entry at the index has a zero virtual address.
+    pub fn get(&self, index: usize) -> Option<&'data pe::ImageDataDirectory> {
+        self.entries
+            .get(index)
+            .filter(|d| d.virtual_address.get(LE) != 0)
+    }
+
+    /// Returns the unparsed export directory.
+    ///
+    /// `data` must be the entire file data.
+    pub fn export_directory<R: ReadRef<'data>>(
+        &self,
+        data: R,
+        sections: &SectionTable<'data>,
+    ) -> Result<Option<&'data pe::ImageExportDirectory>> {
+        let data_dir = match self.get(pe::IMAGE_DIRECTORY_ENTRY_EXPORT) {
+            Some(data_dir) => data_dir,
+            None => return Ok(None),
+        };
+        let export_data = data_dir.data(data, sections)?;
+        ExportTable::parse_directory(export_data).map(Some)
+    }
+
+    /// Returns the partially parsed export directory.
+    ///
+    /// `data` must be the entire file data.
+    pub fn export_table<R: ReadRef<'data>>(
+        &self,
+        data: R,
+        sections: &SectionTable<'data>,
+    ) -> Result<Option<ExportTable<'data>>> {
+        let data_dir = match self.get(pe::IMAGE_DIRECTORY_ENTRY_EXPORT) {
+            Some(data_dir) => data_dir,
+            None => return Ok(None),
+        };
+        let export_va = data_dir.virtual_address.get(LE);
+        let export_data = data_dir.data(data, sections)?;
+        ExportTable::parse(export_data, export_va).map(Some)
+    }
+
+    /// Returns the partially parsed import directory.
+    ///
+    /// `data` must be the entire file data.
+    pub fn import_table<R: ReadRef<'data>>(
+        &self,
+        data: R,
+        sections: &SectionTable<'data>,
+    ) -> Result<Option<ImportTable<'data>>> {
+        let data_dir = match self.get(pe::IMAGE_DIRECTORY_ENTRY_IMPORT) {
+            Some(data_dir) => data_dir,
+            None => return Ok(None),
+        };
+        let import_va = data_dir.virtual_address.get(LE);
+        let (section_data, section_va) = sections
+            .pe_data_containing(data, import_va)
+            .read_error("Invalid import data dir virtual address")?;
+        Ok(Some(ImportTable::new(section_data, section_va, import_va)))
+    }
+
+    /// Returns the partially parsed delay-load import directory.
+    ///
+    /// `data` must be the entire file data.
+    pub fn delay_load_import_table<R: ReadRef<'data>>(
+        &self,
+        data: R,
+        sections: &SectionTable<'data>,
+    ) -> Result<Option<DelayLoadImportTable<'data>>> {
+        let data_dir = match self.get(pe::IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT) {
+            Some(data_dir) => data_dir,
+            None => return Ok(None),
+        };
+        let import_va = data_dir.virtual_address.get(LE);
+        let (section_data, section_va) = sections
+            .pe_data_containing(data, import_va)
+            .read_error("Invalid import data dir virtual address")?;
+        Ok(Some(DelayLoadImportTable::new(
+            section_data,
+            section_va,
+            import_va,
+        )))
+    }
+
+    /// Returns the blocks in the base relocation directory.
+    ///
+    /// `data` must be the entire file data.
+    pub fn relocation_blocks<R: ReadRef<'data>>(
+        &self,
+        data: R,
+        sections: &SectionTable<'data>,
+    ) -> Result<Option<RelocationBlockIterator<'data>>> {
+        let data_dir = match self.get(pe::IMAGE_DIRECTORY_ENTRY_BASERELOC) {
+            Some(data_dir) => data_dir,
+            None => return Ok(None),
+        };
+        let reloc_data = data_dir.data(data, sections)?;
+        Ok(Some(RelocationBlockIterator::new(reloc_data)))
+    }
+
+    /// Returns the resource directory.
+    ///
+    /// `data` must be the entire file data.
+    pub fn resource_directory<R: ReadRef<'data>>(
+        &self,
+        data: R,
+        sections: &SectionTable<'data>,
+    ) -> Result<Option<ResourceDirectory<'data>>> {
+        let data_dir = match self.get(pe::IMAGE_DIRECTORY_ENTRY_RESOURCE) {
+            Some(data_dir) => data_dir,
+            None => return Ok(None),
+        };
+        let rsrc_data = data_dir.data(data, sections)?;
+        Ok(Some(ResourceDirectory::new(rsrc_data)))
+    }
+}
+
+impl pe::ImageDataDirectory {
+    /// Return the virtual address range of this directory entry.
+    pub fn address_range(&self) -> (u32, u32) {
+        (self.virtual_address.get(LE), self.size.get(LE))
+    }
+
+    /// Return the file offset and size of this directory entry.
+    ///
+    /// This function has some limitations:
+    /// - It requires that the data is contained in a single section.
+    /// - It uses the size field of the directory entry, which is
+    /// not desirable for all data directories.
+    /// - It uses the `virtual_address` of the directory entry as an address,
+    /// which is not valid for `IMAGE_DIRECTORY_ENTRY_SECURITY`.
+    pub fn file_range(&self, sections: &SectionTable<'_>) -> Result<(u32, u32)> {
+        let (offset, section_size) = sections
+            .pe_file_range_at(self.virtual_address.get(LE))
+            .read_error("Invalid data dir virtual address")?;
+        let size = self.size.get(LE);
+        if size > section_size {
+            return Err(Error("Invalid data dir size"));
+        }
+        Ok((offset, size))
+    }
+
+    /// Get the data referenced by this directory entry.
+    ///
+    /// This function has some limitations:
+    /// - It requires that the data is contained in a single section.
+    /// - It uses the size field of the directory entry, which is
+    /// not desirable for all data directories.
+    /// - It uses the `virtual_address` of the directory entry as an address,
+    /// which is not valid for `IMAGE_DIRECTORY_ENTRY_SECURITY`.
+    pub fn data<'data, R: ReadRef<'data>>(
+        &self,
+        data: R,
+        sections: &SectionTable<'data>,
+    ) -> Result<&'data [u8]> {
+        sections
+            .pe_data_at(data, self.virtual_address.get(LE))
+            .read_error("Invalid data dir virtual address")?
+            .get(..self.size.get(LE) as usize)
+            .read_error("Invalid data dir size")
+    }
+}