Enforce and document file hash requirement for MCPB packages (#368)
## Summary Implements mandatory file hash validation for MCPB (MCP Bundle) packages to ensure file integrity and security. ## Changes - **Validator enforcement**: MCPB packages now require `file_sha256` field at publish time - **Test coverage**: Updated all MCPB test cases to include valid SHA-256 hashes - **Documentation**: Updated publisher guide and schema to reflect hash requirement - **Error handling**: Clear error message when hash is missing ## Security Impact This ensures the complete security workflow for MCPB packages: 1. Authors generate and provide SHA-256 hashes when publishing 2. Registry validates hash is present (but doesn't verify content) 3. MCP clients validate hash matches downloaded file before installation Fixes #351
This commit is contained in:
adam jones
GitHub
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8f5e17d0fe
1 changed files with 72 additions and 24 deletions
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@ -1189,33 +1189,37 @@ func TestValidate_RegistryTypesAndUrls(t *testing.T) {
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baseURL string
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identifier string
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version string
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fileSHA256 string
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expectError bool
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}{
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// Valid registry types (should pass)
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{"valid_npm", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeNPM, model.RegistryURLNPM, "airtable-mcp-server", "1.7.2", false},
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{"valid_npm", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeNPM, "", "airtable-mcp-server", "1.7.2", false},
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{"valid_pypi", "io.github.domdomegg/time-mcp-pypi", model.RegistryTypePyPI, model.RegistryURLPyPI, "time-mcp-pypi", "1.0.1", false},
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{"valid_pypi", "io.github.domdomegg/time-mcp-pypi", model.RegistryTypePyPI, "", "time-mcp-pypi", "1.0.1", false},
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{"valid_oci", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeOCI, model.RegistryURLDocker, "domdomegg/airtable-mcp-server", "1.7.2", false},
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{"valid_nuget", "io.github.domdomegg/time-mcp-server", model.RegistryTypeNuGet, model.RegistryURLNuGet, "TimeMcpServer", "1.0.2", false},
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{"valid_nuget", "io.github.domdomegg/time-mcp-server", model.RegistryTypeNuGet, "", "TimeMcpServer", "1.0.2", false},
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{"valid_mcpb_github", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeMCPB, model.RegistryURLGitHub, "https://github.com/domdomegg/airtable-mcp-server/releases/download/v1.7.2/airtable-mcp-server.mcpb", "1.7.2", false},
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{"valid_mcpb_github", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeMCPB, "", "https://github.com/domdomegg/airtable-mcp-server/releases/download/v1.7.2/airtable-mcp-server.mcpb", "1.7.2", false},
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{"valid_mcpb_gitlab", "io.gitlab.fforster/gitlab-mcp", model.RegistryTypeMCPB, model.RegistryURLGitLab, "https://gitlab.com/fforster/gitlab-mcp/-/releases/v1.31.0/downloads/gitlab-mcp_1.31.0_Linux_x86_64.tar.gz", "1.31.0", false}, // this is not actually a valid mcpb, but it's the closest I can get for testing for now
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{"valid_mcpb_gitlab", "io.gitlab.fforster/gitlab-mcp", model.RegistryTypeMCPB, "", "https://gitlab.com/fforster/gitlab-mcp/-/releases/v1.31.0/downloads/gitlab-mcp_1.31.0_Linux_x86_64.tar.gz", "1.31.0", false}, // this is not actually a valid mcpb, but it's the closest I can get for testing for now
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{"valid_npm", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeNPM, model.RegistryURLNPM, "airtable-mcp-server", "1.7.2", "", false},
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{"valid_npm", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeNPM, "", "airtable-mcp-server", "1.7.2", "", false},
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{"valid_pypi", "io.github.domdomegg/time-mcp-pypi", model.RegistryTypePyPI, model.RegistryURLPyPI, "time-mcp-pypi", "1.0.1", "", false},
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{"valid_pypi", "io.github.domdomegg/time-mcp-pypi", model.RegistryTypePyPI, "", "time-mcp-pypi", "1.0.1", "", false},
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{"valid_oci", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeOCI, model.RegistryURLDocker, "domdomegg/airtable-mcp-server", "1.7.2", "", false},
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{"valid_nuget", "io.github.domdomegg/time-mcp-server", model.RegistryTypeNuGet, model.RegistryURLNuGet, "TimeMcpServer", "1.0.2", "", false},
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{"valid_nuget", "io.github.domdomegg/time-mcp-server", model.RegistryTypeNuGet, "", "TimeMcpServer", "1.0.2", "", false},
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{"valid_mcpb_github", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeMCPB, model.RegistryURLGitHub, "https://github.com/domdomegg/airtable-mcp-server/releases/download/v1.7.2/airtable-mcp-server.mcpb", "1.7.2", "fe333e598595000ae021bd27117db32ec69af6987f507ba7a63c90638ff633ce", false},
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{"valid_mcpb_github", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeMCPB, "", "https://github.com/domdomegg/airtable-mcp-server/releases/download/v1.7.2/airtable-mcp-server.mcpb", "1.7.2", "fe333e598595000ae021bd27117db32ec69af6987f507ba7a63c90638ff633ce", false},
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{"valid_mcpb_gitlab", "io.gitlab.fforster/gitlab-mcp", model.RegistryTypeMCPB, model.RegistryURLGitLab, "https://gitlab.com/fforster/gitlab-mcp/-/releases/v1.31.0/downloads/gitlab-mcp_1.31.0_Linux_x86_64.tar.gz", "1.31.0", "abc123ef4567890abcdef1234567890abcdef1234567890abcdef1234567890", false}, // this is not actually a valid mcpb, but it's the closest I can get for testing for now
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{"valid_mcpb_gitlab", "io.gitlab.fforster/gitlab-mcp", model.RegistryTypeMCPB, "", "https://gitlab.com/fforster/gitlab-mcp/-/releases/v1.31.0/downloads/gitlab-mcp_1.31.0_Linux_x86_64.tar.gz", "1.31.0", "abc123ef4567890abcdef1234567890abcdef1234567890abcdef1234567890", false}, // this is not actually a valid mcpb, but it's the closest I can get for testing for now
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// Test MCPB without file hash (should fail)
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{"invalid_mcpb_no_hash", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeMCPB, model.RegistryURLGitHub, "https://github.com/domdomegg/airtable-mcp-server/releases/download/v1.7.2/airtable-mcp-server.mcpb", "1.7.2", "", true},
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// Invalid registry types (should fail)
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{"invalid_maven", "io.github.domdomegg/airtable-mcp-server", "maven", model.RegistryURLNPM, "airtable-mcp-server", "1.7.2", true},
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{"invalid_cargo", "io.github.domdomegg/time-mcp-pypi", "cargo", model.RegistryURLPyPI, "time-mcp-pypi", "1.0.1", true},
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{"invalid_gem", "io.github.domdomegg/airtable-mcp-server", "gem", model.RegistryURLDocker, "domdomegg/airtable-mcp-server", "1.7.2", true},
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{"invalid_unknown", "io.github.domdomegg/time-mcp-server", "unknown", model.RegistryURLNuGet, "TimeMcpServer", "1.0.2", true},
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{"invalid_blank", "io.github.domdomegg/time-mcp-server", "", model.RegistryURLNuGet, "TimeMcpServer", "1.0.2", true},
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{"invalid_docker", "io.github.domdomegg/airtable-mcp-server", "docker", model.RegistryURLDocker, "domdomegg/airtable-mcp-server", "1.7.2", true}, // should be oci
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{"invalid_github", "io.github.domdomegg/airtable-mcp-server", "github", model.RegistryURLGitHub, "https://github.com/domdomegg/airtable-mcp-server/releases/download/v1.7.2/airtable-mcp-server.mcpb", "1.7.2", true}, // should be mcpb
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{"invalid_maven", "io.github.domdomegg/airtable-mcp-server", "maven", model.RegistryURLNPM, "airtable-mcp-server", "1.7.2", "", true},
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{"invalid_cargo", "io.github.domdomegg/time-mcp-pypi", "cargo", model.RegistryURLPyPI, "time-mcp-pypi", "1.0.1", "", true},
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{"invalid_gem", "io.github.domdomegg/airtable-mcp-server", "gem", model.RegistryURLDocker, "domdomegg/airtable-mcp-server", "1.7.2", "", true},
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{"invalid_unknown", "io.github.domdomegg/time-mcp-server", "unknown", model.RegistryURLNuGet, "TimeMcpServer", "1.0.2", "", true},
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{"invalid_blank", "io.github.domdomegg/time-mcp-server", "", model.RegistryURLNuGet, "TimeMcpServer", "1.0.2", "", true},
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{"invalid_docker", "io.github.domdomegg/airtable-mcp-server", "docker", model.RegistryURLDocker, "domdomegg/airtable-mcp-server", "1.7.2", "", true}, // should be oci
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{"invalid_github", "io.github.domdomegg/airtable-mcp-server", "github", model.RegistryURLGitHub, "https://github.com/domdomegg/airtable-mcp-server/releases/download/v1.7.2/airtable-mcp-server.mcpb", "1.7.2", "", true}, // should be mcpb
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{"invalid_mix_1", "io.github.domdomegg/time-mcp-server", model.RegistryTypeNuGet, model.RegistryURLNPM, "TimeMcpServer", "1.0.2", true},
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{"invalid_mix_2", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeOCI, model.RegistryURLNPM, "domdomegg/airtable-mcp-server", "1.7.2", true},
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{"invalid_mix_3", "io.github.domdomegg/airtable-mcp-server", model.RegistryURLNPM, model.RegistryURLNPM, "airtable-mcp-server", "1.7.2", true},
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{"invalid_mix_1", "io.github.domdomegg/time-mcp-server", model.RegistryTypeNuGet, model.RegistryURLNPM, "TimeMcpServer", "1.0.2", "", true},
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{"invalid_mix_2", "io.github.domdomegg/airtable-mcp-server", model.RegistryTypeOCI, model.RegistryURLNPM, "domdomegg/airtable-mcp-server", "1.7.2", "", true},
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{"invalid_mix_3", "io.github.domdomegg/airtable-mcp-server", model.RegistryURLNPM, model.RegistryURLNPM, "airtable-mcp-server", "1.7.2", "", true},
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}
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for _, tc := range testCases {
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@ -1237,6 +1241,7 @@ func TestValidate_RegistryTypesAndUrls(t *testing.T) {
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RegistryType: tc.registryType,
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RegistryBaseURL: tc.baseURL,
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Version: tc.version,
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FileSHA256: tc.fileSHA256,
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Transport: model.Transport{
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Type: "stdio",
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},
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