wehub-resource-sync
49b9bb6724
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56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
from mcp_types import (
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ListResourceTemplatesResult,
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PaginatedRequestParams,
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ReadResourceRequestParams,
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ReadResourceResult,
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ResourceTemplate,
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TextResourceContents,
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)
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from mcp.server import Server, ServerRequestContext
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from mcp.shared.path_security import contains_path_traversal, is_absolute_path
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from mcp.shared.uri_template import UriTemplate
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TEMPLATES = {
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"manuals": UriTemplate.parse("manuals://{+path}"),
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"books": UriTemplate.parse("books://{isbn}"),
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}
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MANUALS = {"printing/setup.md": "# Printer setup", "returns.md": "# Returns policy"}
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BOOKS = {"978-0441172719": "Dune by Frank Herbert"}
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def read_manual_safely(path: str) -> str:
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if contains_path_traversal(path) or is_absolute_path(path):
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raise ValueError("rejected")
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return MANUALS[path]
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async def read_resource(ctx: ServerRequestContext, params: ReadResourceRequestParams) -> ReadResourceResult:
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if (matched := TEMPLATES["manuals"].match(params.uri)) is not None:
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text = read_manual_safely(str(matched["path"]))
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return ReadResourceResult(contents=[TextResourceContents(uri=params.uri, text=text)])
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if (matched := TEMPLATES["books"].match(params.uri)) is not None:
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text = BOOKS[str(matched["isbn"])]
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return ReadResourceResult(contents=[TextResourceContents(uri=params.uri, text=text)])
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raise ValueError(f"Unknown resource: {params.uri}")
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async def list_resource_templates(
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ctx: ServerRequestContext, params: PaginatedRequestParams | None
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) -> ListResourceTemplatesResult:
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return ListResourceTemplatesResult(
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resource_templates=[
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ResourceTemplate(name=name, uri_template=str(template)) for name, template in TEMPLATES.items()
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]
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)
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server = Server(
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"Bookshop",
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on_read_resource=read_resource,
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on_list_resource_templates=list_resource_templates,
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)
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