Node / ReticulumProjects / MeshChatX.git / files / vendor / rns_filesync / rns_filesync / transfer.py

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T8b949e"""File transfer helpers: atomic write and delta apply."""

Tff7b72from T7ee787__future__ Tff7b72import Te6edf3annotations

Tff7b72import T7ee787os

Tff7b72import T7ee787tempfile

Tff7b72from T7ee787typing Tff7b72import Te6edf3BinaryIO

Tff7b72from T7ee787rns_filesyncT7ee787.T7ee787constants Tff7b72import Te6edf3BLOCK_SIZE

Tff7b72from T7ee787rns_filesyncT7ee787.T7ee787inventory Tff7b72import Te6edf3hash_file

Tff7b72from T7ee787rns_filesyncT7ee787.T7ee787paths Tff7b72import Te6edf3PathJailErrorTb4b4b4, Te6edf3resolve_under_root

T8b949e# Refuse absurd seeks that could sparse-allocate huge files.

Te6edf3MAX_DELTA_BLOCK_NUM Tff7b72= T79c0ff1_048_576

Tff7b72def Td2a8ffensure_parent_dirTb4b4b4(Te6edf3pathTb4b4b4: Tffa657strTb4b4b4) Tff7b72-Tff7b72> Tff7b72NoneTb4b4b4:

Te6edf3parent Tff7b72= Te6edf3osTff7b72.Td2a8ffpathTff7b72.Td2a8ffdirnameTb4b4b4(Te6edf3pathTb4b4b4)

Tff7b72if Te6edf3parentTb4b4b4:

Te6edf3osTff7b72.Td2a8ffmakedirsTb4b4b4(Te6edf3parentTb4b4b4, Te6edf3exist_okTff7b72=Tff7b72TrueTb4b4b4)

Tff7b72def Td2a8ffatomic_replace_fileTb4b4b4(Te6edf3rootTb4b4b4: Tffa657strTb4b4b4, Te6edf3relpathTb4b4b4: Tffa657strTb4b4b4, Te6edf3source_pathTb4b4b4: Tffa657strTb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:

T8b949e"""Move source_path into jailed destination via os.replace."""

Te6edf3dest Tff7b72= Te6edf3resolve_under_rootTb4b4b4(Te6edf3rootTb4b4b4, Te6edf3relpathTb4b4b4)

Te6edf3ensure_parent_dirTb4b4b4(Te6edf3destTb4b4b4)

Te6edf3osTff7b72.Td2a8ffreplaceTb4b4b4(Te6edf3source_pathTb4b4b4, Te6edf3destTb4b4b4)

Tff7b72return Te6edf3dest

Tff7b72def Td2a8ffwrite_bytes_atomicTb4b4b4(Te6edf3rootTb4b4b4: Tffa657strTb4b4b4, Te6edf3relpathTb4b4b4: Tffa657strTb4b4b4, Te6edf3dataTb4b4b4: Tffa657bytesTb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:

T8b949e"""Write bytes to a temp file under root then replace into place."""

Te6edf3dest Tff7b72= Te6edf3resolve_under_rootTb4b4b4(Te6edf3rootTb4b4b4, Te6edf3relpathTb4b4b4)

Te6edf3ensure_parent_dirTb4b4b4(Te6edf3destTb4b4b4)

Te6edf3fdTb4b4b4, Te6edf3tmp_path Tff7b72= Te6edf3tempfileTff7b72.Td2a8ffmkstempTb4b4b4(

Te6edf3prefixTff7b72=Ta5d6ff"Ta5d6ff.rns-xfer-Ta5d6ff"Tb4b4b4,

Te6edf3suffixTff7b72=Ta5d6ff"Ta5d6ff.tmpTa5d6ff"Tb4b4b4,

Tffa657dirTff7b72=Te6edf3osTff7b72.Td2a8ffpathTff7b72.Td2a8ffdirnameTb4b4b4(Te6edf3destTb4b4b4) Tff7b72or Te6edf3rootTb4b4b4,

Tb4b4b4)

Tff7b72tryTb4b4b4:

Tff7b72with Te6edf3osTff7b72.Td2a8fffdopenTb4b4b4(Te6edf3fdTb4b4b4, Ta5d6ff"Ta5d6ffwbTa5d6ff"Tb4b4b4) Tff7b72as Te6edf3handleTb4b4b4:

Te6edf3handleTff7b72.Td2a8ffwriteTb4b4b4(Te6edf3dataTb4b4b4)

Te6edf3handleTff7b72.Td2a8ffflushTb4b4b4(Tb4b4b4)

Te6edf3osTff7b72.Td2a8fffsyncTb4b4b4(Te6edf3handleTff7b72.Td2a8fffilenoTb4b4b4(Tb4b4b4)Tb4b4b4)

Te6edf3osTff7b72.Td2a8ffreplaceTb4b4b4(Te6edf3tmp_pathTb4b4b4, Te6edf3destTb4b4b4)

Tff7b72except Tf85149ExceptionTb4b4b4:

Tff7b72if Te6edf3osTff7b72.Td2a8ffpathTff7b72.Td2a8ffexistsTb4b4b4(Te6edf3tmp_pathTb4b4b4)Tb4b4b4:

Te6edf3osTff7b72.Td2a8ffunlinkTb4b4b4(Te6edf3tmp_pathTb4b4b4)

Tff7b72raise

Tff7b72return Te6edf3dest

Tff7b72def Td2a8ffcreate_empty_fileTb4b4b4(Te6edf3rootTb4b4b4: Tffa657strTb4b4b4, Te6edf3relpathTb4b4b4: Tffa657strTb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:

Tff7b72return Te6edf3write_bytes_atomicTb4b4b4(Te6edf3rootTb4b4b4, Te6edf3relpathTb4b4b4, Ta5d6ffbTa5d6ff"Ta5d6ff"Tb4b4b4)

Tff7b72def Td2a8ffapply_delta_blocksTb4b4b4(

Te6edf3rootTb4b4b4: Tffa657strTb4b4b4,

Te6edf3relpathTb4b4b4: Tffa657strTb4b4b4,

Te6edf3block_numsTb4b4b4: Tffa657listTb4b4b4[Tffa657intTb4b4b4]Tb4b4b4,

Te6edf3data_streamTb4b4b4: Te6edf3BinaryIOTb4b4b4,

Tff7b72*Tb4b4b4,

Te6edf3expected_sizeTb4b4b4: Tffa657int Tff7b72| Tff7b72None Tff7b72= Tff7b72NoneTb4b4b4,

Te6edf3block_sizeTb4b4b4: Tffa657int Tff7b72= Te6edf3BLOCK_SIZETb4b4b4,

Tb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:

T8b949e"""Apply ordered delta blocks to a file under root.

Creates the file if missing. Truncates to expected_size when provided.

"""

Te6edf3dest Tff7b72= Te6edf3resolve_under_rootTb4b4b4(Te6edf3rootTb4b4b4, Te6edf3relpathTb4b4b4)

Te6edf3ensure_parent_dirTb4b4b4(Te6edf3destTb4b4b4)

Tff7b72for Te6edf3block_num Tff7b72in Te6edf3block_numsTb4b4b4:

Tff7b72if Tff7b72not Tffa657isinstanceTb4b4b4(Te6edf3block_numTb4b4b4, Tffa657intTb4b4b4) Tff7b72or Tffa657isinstanceTb4b4b4(Te6edf3block_numTb4b4b4, Tffa657boolTb4b4b4)Tb4b4b4:

Tff7b72raise Te6edf3PathJailErrorTb4b4b4(Ta5d6ff"Ta5d6ffinvalid block numberTa5d6ff"Tb4b4b4)

Tff7b72if Te6edf3block_num Tff7b72< T79c0ff0 Tff7b72or Te6edf3block_num Tff7b72> Te6edf3MAX_DELTA_BLOCK_NUMTb4b4b4:

Tff7b72raise Te6edf3PathJailErrorTb4b4b4(Ta5d6ff"Ta5d6ffblock number out of rangeTa5d6ff"Tb4b4b4)

Tff7b72if Te6edf3expected_size Tff7b72is Tff7b72not Tff7b72NoneTb4b4b4:

Tff7b72if Tb4b4b4(

Tff7b72not Tffa657isinstanceTb4b4b4(Te6edf3expected_sizeTb4b4b4, Tffa657intTb4b4b4)

Tff7b72or Tffa657isinstanceTb4b4b4(Te6edf3expected_sizeTb4b4b4, Tffa657boolTb4b4b4)

Tff7b72or Te6edf3expected_size Tff7b72< T79c0ff0

Tff7b72or Te6edf3expected_size Tff7b72> Tb4b4b4(Te6edf3MAX_DELTA_BLOCK_NUM Tff7b72+ T79c0ff1Tb4b4b4) Tff7b72* Te6edf3block_size

Tb4b4b4)Tb4b4b4:

Tff7b72raise Te6edf3PathJailErrorTb4b4b4(Ta5d6ff"Ta5d6ffexpected size out of rangeTa5d6ff"Tb4b4b4)

Te6edf3mode Tff7b72= Ta5d6ff"Ta5d6ffr+bTa5d6ff" Tff7b72if Te6edf3osTff7b72.Td2a8ffpathTff7b72.Td2a8ffexistsTb4b4b4(Te6edf3destTb4b4b4) Tff7b72else Ta5d6ff"Ta5d6ffw+bTa5d6ff"

Tff7b72with Tffa657openTb4b4b4(Te6edf3destTb4b4b4, Te6edf3modeTb4b4b4) Tff7b72as Te6edf3handleTb4b4b4:

Tff7b72for Te6edf3block_num Tff7b72in Te6edf3block_numsTb4b4b4:

Te6edf3block_data Tff7b72= Te6edf3data_streamTff7b72.Td2a8ffreadTb4b4b4(Te6edf3block_sizeTb4b4b4)

Tff7b72if Tff7b72not Te6edf3block_dataTb4b4b4:

Tff7b72break

Te6edf3handleTff7b72.Td2a8ffseekTb4b4b4(Te6edf3block_num Tff7b72* Te6edf3block_sizeTb4b4b4)

Te6edf3handleTff7b72.Td2a8ffwriteTb4b4b4(Te6edf3block_dataTb4b4b4)

Tff7b72if Te6edf3expected_size Tff7b72is Tff7b72not Tff7b72NoneTb4b4b4:

Te6edf3handleTff7b72.Td2a8fftruncateTb4b4b4(Te6edf3expected_sizeTb4b4b4)

Tff7b72return Te6edf3dest

Tff7b72def Td2a8ffbuild_delta_payloadTb4b4b4(

Te6edf3filepathTb4b4b4: Tffa657strTb4b4b4,

Te6edf3block_numsTb4b4b4: Tffa657listTb4b4b4[Tffa657intTb4b4b4]Tb4b4b4,

Te6edf3block_sizeTb4b4b4: Tffa657int Tff7b72= Te6edf3BLOCK_SIZETb4b4b4,

Tb4b4b4) Tff7b72-Tff7b72> Tffa657bytesTb4b4b4:

T8b949e"""Concatenate selected blocks from filepath into one payload."""

Te6edf3chunksTb4b4b4: Tffa657listTb4b4b4[Tffa657bytesTb4b4b4] Tff7b72= Tb4b4b4[Tb4b4b4]

Tff7b72with Tffa657openTb4b4b4(Te6edf3filepathTb4b4b4, Ta5d6ff"Ta5d6ffrbTa5d6ff"Tb4b4b4) Tff7b72as Te6edf3handleTb4b4b4:

Tff7b72for Te6edf3block_num Tff7b72in Te6edf3block_numsTb4b4b4:

Tff7b72if Tff7b72not Tffa657isinstanceTb4b4b4(Te6edf3block_numTb4b4b4, Tffa657intTb4b4b4) Tff7b72or Tffa657isinstanceTb4b4b4(Te6edf3block_numTb4b4b4, Tffa657boolTb4b4b4)Tb4b4b4:

Tff7b72raise Te6edf3PathJailErrorTb4b4b4(Ta5d6ff"Ta5d6ffinvalid block numberTa5d6ff"Tb4b4b4)

Tff7b72if Te6edf3block_num Tff7b72< T79c0ff0 Tff7b72or Te6edf3block_num Tff7b72> Te6edf3MAX_DELTA_BLOCK_NUMTb4b4b4:

Tff7b72raise Te6edf3PathJailErrorTb4b4b4(Ta5d6ff"Ta5d6ffblock number out of rangeTa5d6ff"Tb4b4b4)

Te6edf3handleTff7b72.Td2a8ffseekTb4b4b4(Te6edf3block_num Tff7b72* Te6edf3block_sizeTb4b4b4)

Te6edf3chunksTff7b72.Td2a8ffappendTb4b4b4(Te6edf3handleTff7b72.Td2a8ffreadTb4b4b4(Te6edf3block_sizeTb4b4b4)Tb4b4b4)

Tff7b72return Ta5d6ffbTa5d6ff"Ta5d6ff"Tff7b72.Td2a8ffjoinTb4b4b4(Te6edf3chunksTb4b4b4)

Tff7b72def Td2a8ffverify_file_hashTb4b4b4(Te6edf3filepathTb4b4b4: Tffa657strTb4b4b4, Te6edf3expected_hashTb4b4b4: Tffa657str Tff7b72| Tff7b72NoneTb4b4b4) Tff7b72-Tff7b72> Tffa657boolTb4b4b4:

Tff7b72if Tff7b72not Te6edf3expected_hashTb4b4b4:

Tff7b72return Tff7b72False

Te6edf3actual Tff7b72= Te6edf3hash_fileTb4b4b4(Te6edf3filepathTb4b4b4)

Tff7b72return Te6edf3actual Tff7b72== Te6edf3expected_hash

Tff7b72def Td2a8ffcommit_received_fileTb4b4b4(

Te6edf3rootTb4b4b4: Tffa657strTb4b4b4,

Te6edf3relpathTb4b4b4: Tffa657strTb4b4b4,

Tff7b72*Tb4b4b4,

Te6edf3modeTb4b4b4: Tffa657strTb4b4b4,

Te6edf3resource_dataTb4b4b4,

Te6edf3block_numsTb4b4b4: Tffa657listTb4b4b4[Tffa657intTb4b4b4] Tff7b72| Tff7b72None Tff7b72= Tff7b72NoneTb4b4b4,

Te6edf3expected_hashTb4b4b4: Tffa657str Tff7b72| Tff7b72None Tff7b72= Tff7b72NoneTb4b4b4,

Te6edf3expected_sizeTb4b4b4: Tffa657int Tff7b72| Tff7b72None Tff7b72= Tff7b72NoneTb4b4b4,

Te6edf3require_hashTb4b4b4: Tffa657bool Tff7b72= Tff7b72TrueTb4b4b4,

Tb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:

T8b949e"""Commit a received Resource payload into the sync root."""

Tff7b72if Te6edf3require_hash Tff7b72and Tff7b72not Te6edf3expected_hashTb4b4b4:

Tff7b72raise Tf85149ValueErrorTb4b4b4(Ta5d6fffTa5d6ff"Ta5d6ffmissing content hash for Tffd700{Te6edf3relpathTffd700}Ta5d6ff"Tb4b4b4)

Tff7b72if Te6edf3mode Tff7b72== Ta5d6ff"Ta5d6ffdeltaTa5d6ff"Tb4b4b4:

Tff7b72if Te6edf3block_nums Tff7b72is Tff7b72NoneTb4b4b4:

Tff7b72raise Tf85149ValueErrorTb4b4b4(Ta5d6ff"Ta5d6ffdelta mode requires block_numsTa5d6ff"Tb4b4b4)

Te6edf3resource_dataTff7b72.Td2a8ffseekTb4b4b4(T79c0ff0Tb4b4b4)

Te6edf3dest Tff7b72= Te6edf3apply_delta_blocksTb4b4b4(

Te6edf3rootTb4b4b4,

Te6edf3relpathTb4b4b4,

Te6edf3block_numsTb4b4b4,

Te6edf3resource_dataTb4b4b4,

Te6edf3expected_sizeTff7b72=Te6edf3expected_sizeTb4b4b4,

Tb4b4b4)

Tff7b72elseTb4b4b4:

Te6edf3source_name Tff7b72= Tffa657getattrTb4b4b4(Te6edf3resource_dataTb4b4b4, Ta5d6ff"Ta5d6ffnameTa5d6ff"Tb4b4b4, Tff7b72NoneTb4b4b4)

Tff7b72if Te6edf3source_name Tff7b72and Te6edf3osTff7b72.Td2a8ffpathTff7b72.Td2a8ffisfileTb4b4b4(Te6edf3source_nameTb4b4b4)Tb4b4b4:

Te6edf3dest Tff7b72= Te6edf3atomic_replace_fileTb4b4b4(Te6edf3rootTb4b4b4, Te6edf3relpathTb4b4b4, Te6edf3source_nameTb4b4b4)

Tff7b72elseTb4b4b4:

Te6edf3resource_dataTff7b72.Td2a8ffseekTb4b4b4(T79c0ff0Tb4b4b4)

Te6edf3dest Tff7b72= Te6edf3write_bytes_atomicTb4b4b4(Te6edf3rootTb4b4b4, Te6edf3relpathTb4b4b4, Te6edf3resource_dataTff7b72.Td2a8ffreadTb4b4b4(Tb4b4b4)Tb4b4b4)

Tff7b72if Te6edf3require_hash Tff7b72or Te6edf3expected_hashTb4b4b4:

Tff7b72if Tff7b72not Te6edf3verify_file_hashTb4b4b4(Te6edf3destTb4b4b4, Te6edf3expected_hashTb4b4b4)Tb4b4b4:

Tff7b72tryTb4b4b4:

Te6edf3osTff7b72.Td2a8ffremoveTb4b4b4(Te6edf3destTb4b4b4)

Tff7b72except Tf85149OSErrorTb4b4b4:

Tff7b72pass

Tff7b72raise Tf85149ValueErrorTb4b4b4(Ta5d6fffTa5d6ff"Ta5d6ffhash mismatch for Tffd700{Te6edf3relpathTffd700}Ta5d6ff"Tb4b4b4)

Tff7b72return Te6edf3dest