mirror of https://github.com/status-im/consul.git
Vendor the go-rootcerts lib for the client tls options
This commit is contained in:
Kyle Havlovitz
parent
ae6bf56ee1
commit
ebef78dc71
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Mozilla Public License, version 2.0
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1. Definitions
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1.1. "Contributor"
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means each individual or legal entity that creates, contributes to the
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creation of, or owns Covered Software.
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1.2. "Contributor Version"
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means the combination of the Contributions of others (if any) used by a
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Contributor and that particular Contributor's Contribution.
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1.3. "Contribution"
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means Covered Software of a particular Contributor.
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1.4. "Covered Software"
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means Source Code Form to which the initial Contributor has attached the
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notice in Exhibit A, the Executable Form of such Source Code Form, and
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Modifications of such Source Code Form, in each case including portions
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thereof.
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1.5. "Incompatible With Secondary Licenses"
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means
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a. that the initial Contributor has attached the notice described in
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Exhibit B to the Covered Software; or
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b. that the Covered Software was made available under the terms of
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version 1.1 or earlier of the License, but not also under the terms of
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a Secondary License.
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1.6. "Executable Form"
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means any form of the work other than Source Code Form.
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1.7. "Larger Work"
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means a work that combines Covered Software with other material, in a
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separate file or files, that is not Covered Software.
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1.8. "License"
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means this document.
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1.9. "Licensable"
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means having the right to grant, to the maximum extent possible, whether
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at the time of the initial grant or subsequently, any and all of the
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rights conveyed by this License.
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1.10. "Modifications"
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means any of the following:
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a. any file in Source Code Form that results from an addition to,
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deletion from, or modification of the contents of Covered Software; or
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b. any new file in Source Code Form that contains any Covered Software.
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1.11. "Patent Claims" of a Contributor
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means any patent claim(s), including without limitation, method,
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process, and apparatus claims, in any patent Licensable by such
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Contributor that would be infringed, but for the grant of the License,
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by the making, using, selling, offering for sale, having made, import,
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or transfer of either its Contributions or its Contributor Version.
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1.12. "Secondary License"
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means either the GNU General Public License, Version 2.0, the GNU Lesser
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General Public License, Version 2.1, the GNU Affero General Public
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License, Version 3.0, or any later versions of those licenses.
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1.13. "Source Code Form"
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means the form of the work preferred for making modifications.
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1.14. "You" (or "Your")
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means an individual or a legal entity exercising rights under this
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License. For legal entities, "You" includes any entity that controls, is
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controlled by, or is under common control with You. For purposes of this
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definition, "control" means (a) the power, direct or indirect, to cause
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the direction or management of such entity, whether by contract or
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otherwise, or (b) ownership of more than fifty percent (50%) of the
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outstanding shares or beneficial ownership of such entity.
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2. License Grants and Conditions
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2.1. Grants
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Each Contributor hereby grants You a world-wide, royalty-free,
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non-exclusive license:
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a. under intellectual property rights (other than patent or trademark)
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Licensable by such Contributor to use, reproduce, make available,
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modify, display, perform, distribute, and otherwise exploit its
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Contributions, either on an unmodified basis, with Modifications, or
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as part of a Larger Work; and
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b. under Patent Claims of such Contributor to make, use, sell, offer for
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sale, have made, import, and otherwise transfer either its
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Contributions or its Contributor Version.
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2.2. Effective Date
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The licenses granted in Section 2.1 with respect to any Contribution
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become effective for each Contribution on the date the Contributor first
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distributes such Contribution.
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2.3. Limitations on Grant Scope
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The licenses granted in this Section 2 are the only rights granted under
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this License. No additional rights or licenses will be implied from the
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distribution or licensing of Covered Software under this License.
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Notwithstanding Section 2.1(b) above, no patent license is granted by a
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Contributor:
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a. for any code that a Contributor has removed from Covered Software; or
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b. for infringements caused by: (i) Your and any other third party's
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modifications of Covered Software, or (ii) the combination of its
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Contributions with other software (except as part of its Contributor
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Version); or
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c. under Patent Claims infringed by Covered Software in the absence of
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its Contributions.
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This License does not grant any rights in the trademarks, service marks,
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or logos of any Contributor (except as may be necessary to comply with
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the notice requirements in Section 3.4).
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2.4. Subsequent Licenses
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No Contributor makes additional grants as a result of Your choice to
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distribute the Covered Software under a subsequent version of this
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License (see Section 10.2) or under the terms of a Secondary License (if
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permitted under the terms of Section 3.3).
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2.5. Representation
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Each Contributor represents that the Contributor believes its
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Contributions are its original creation(s) or it has sufficient rights to
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grant the rights to its Contributions conveyed by this License.
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2.6. Fair Use
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This License is not intended to limit any rights You have under
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applicable copyright doctrines of fair use, fair dealing, or other
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equivalents.
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2.7. Conditions
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Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
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Section 2.1.
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3. Responsibilities
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3.1. Distribution of Source Form
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All distribution of Covered Software in Source Code Form, including any
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Modifications that You create or to which You contribute, must be under
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the terms of this License. You must inform recipients that the Source
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Code Form of the Covered Software is governed by the terms of this
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License, and how they can obtain a copy of this License. You may not
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attempt to alter or restrict the recipients' rights in the Source Code
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Form.
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3.2. Distribution of Executable Form
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If You distribute Covered Software in Executable Form then:
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a. such Covered Software must also be made available in Source Code Form,
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as described in Section 3.1, and You must inform recipients of the
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Executable Form how they can obtain a copy of such Source Code Form by
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reasonable means in a timely manner, at a charge no more than the cost
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of distribution to the recipient; and
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b. You may distribute such Executable Form under the terms of this
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|
License, or sublicense it under different terms, provided that the
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|
license for the Executable Form does not attempt to limit or alter the
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|
recipients' rights in the Source Code Form under this License.
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3.3. Distribution of a Larger Work
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You may create and distribute a Larger Work under terms of Your choice,
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provided that You also comply with the requirements of this License for
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the Covered Software. If the Larger Work is a combination of Covered
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|
Software with a work governed by one or more Secondary Licenses, and the
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Covered Software is not Incompatible With Secondary Licenses, this
|
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|
License permits You to additionally distribute such Covered Software
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under the terms of such Secondary License(s), so that the recipient of
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the Larger Work may, at their option, further distribute the Covered
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|
Software under the terms of either this License or such Secondary
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License(s).
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3.4. Notices
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You may not remove or alter the substance of any license notices
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|
(including copyright notices, patent notices, disclaimers of warranty, or
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|
limitations of liability) contained within the Source Code Form of the
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Covered Software, except that You may alter any license notices to the
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|
extent required to remedy known factual inaccuracies.
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3.5. Application of Additional Terms
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You may choose to offer, and to charge a fee for, warranty, support,
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indemnity or liability obligations to one or more recipients of Covered
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|
Software. However, You may do so only on Your own behalf, and not on
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behalf of any Contributor. You must make it absolutely clear that any
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such warranty, support, indemnity, or liability obligation is offered by
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You alone, and You hereby agree to indemnify every Contributor for any
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|
liability incurred by such Contributor as a result of warranty, support,
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indemnity or liability terms You offer. You may include additional
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disclaimers of warranty and limitations of liability specific to any
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jurisdiction.
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4. Inability to Comply Due to Statute or Regulation
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If it is impossible for You to comply with any of the terms of this License
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with respect to some or all of the Covered Software due to statute,
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judicial order, or regulation then You must: (a) comply with the terms of
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this License to the maximum extent possible; and (b) describe the
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|
limitations and the code they affect. Such description must be placed in a
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text file included with all distributions of the Covered Software under
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this License. Except to the extent prohibited by statute or regulation,
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such description must be sufficiently detailed for a recipient of ordinary
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skill to be able to understand it.
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5. Termination
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5.1. The rights granted under this License will terminate automatically if You
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fail to comply with any of its terms. However, if You become compliant,
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then the rights granted under this License from a particular Contributor
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are reinstated (a) provisionally, unless and until such Contributor
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explicitly and finally terminates Your grants, and (b) on an ongoing
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basis, if such Contributor fails to notify You of the non-compliance by
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some reasonable means prior to 60 days after You have come back into
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compliance. Moreover, Your grants from a particular Contributor are
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reinstated on an ongoing basis if such Contributor notifies You of the
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non-compliance by some reasonable means, this is the first time You have
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received notice of non-compliance with this License from such
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Contributor, and You become compliant prior to 30 days after Your receipt
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of the notice.
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|
5.2. If You initiate litigation against any entity by asserting a patent
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|
infringement claim (excluding declaratory judgment actions,
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|
counter-claims, and cross-claims) alleging that a Contributor Version
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directly or indirectly infringes any patent, then the rights granted to
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You by any and all Contributors for the Covered Software under Section
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2.1 of this License shall terminate.
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5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
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|
license agreements (excluding distributors and resellers) which have been
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validly granted by You or Your distributors under this License prior to
|
||||||
|
termination shall survive termination.
|
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|
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6. Disclaimer of Warranty
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|
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Covered Software is provided under this License on an "as is" basis,
|
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without warranty of any kind, either expressed, implied, or statutory,
|
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|
including, without limitation, warranties that the Covered Software is free
|
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|
of defects, merchantable, fit for a particular purpose or non-infringing.
|
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|
The entire risk as to the quality and performance of the Covered Software
|
||||||
|
is with You. Should any Covered Software prove defective in any respect,
|
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|
You (not any Contributor) assume the cost of any necessary servicing,
|
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|
repair, or correction. This disclaimer of warranty constitutes an essential
|
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|
part of this License. No use of any Covered Software is authorized under
|
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|
this License except under this disclaimer.
|
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|
|
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7. Limitation of Liability
|
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|
|
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|
Under no circumstances and under no legal theory, whether tort (including
|
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|
negligence), contract, or otherwise, shall any Contributor, or anyone who
|
||||||
|
distributes Covered Software as permitted above, be liable to You for any
|
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|
direct, indirect, special, incidental, or consequential damages of any
|
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|
character including, without limitation, damages for lost profits, loss of
|
||||||
|
goodwill, work stoppage, computer failure or malfunction, or any and all
|
||||||
|
other commercial damages or losses, even if such party shall have been
|
||||||
|
informed of the possibility of such damages. This limitation of liability
|
||||||
|
shall not apply to liability for death or personal injury resulting from
|
||||||
|
such party's negligence to the extent applicable law prohibits such
|
||||||
|
limitation. Some jurisdictions do not allow the exclusion or limitation of
|
||||||
|
incidental or consequential damages, so this exclusion and limitation may
|
||||||
|
not apply to You.
|
||||||
|
|
||||||
|
8. Litigation
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||||||
|
|
||||||
|
Any litigation relating to this License may be brought only in the courts
|
||||||
|
of a jurisdiction where the defendant maintains its principal place of
|
||||||
|
business and such litigation shall be governed by laws of that
|
||||||
|
jurisdiction, without reference to its conflict-of-law provisions. Nothing
|
||||||
|
in this Section shall prevent a party's ability to bring cross-claims or
|
||||||
|
counter-claims.
|
||||||
|
|
||||||
|
9. Miscellaneous
|
||||||
|
|
||||||
|
This License represents the complete agreement concerning the subject
|
||||||
|
matter hereof. If any provision of this License is held to be
|
||||||
|
unenforceable, such provision shall be reformed only to the extent
|
||||||
|
necessary to make it enforceable. Any law or regulation which provides that
|
||||||
|
the language of a contract shall be construed against the drafter shall not
|
||||||
|
be used to construe this License against a Contributor.
|
||||||
|
|
||||||
|
|
||||||
|
10. Versions of the License
|
||||||
|
|
||||||
|
10.1. New Versions
|
||||||
|
|
||||||
|
Mozilla Foundation is the license steward. Except as provided in Section
|
||||||
|
10.3, no one other than the license steward has the right to modify or
|
||||||
|
publish new versions of this License. Each version will be given a
|
||||||
|
distinguishing version number.
|
||||||
|
|
||||||
|
10.2. Effect of New Versions
|
||||||
|
|
||||||
|
You may distribute the Covered Software under the terms of the version
|
||||||
|
of the License under which You originally received the Covered Software,
|
||||||
|
or under the terms of any subsequent version published by the license
|
||||||
|
steward.
|
||||||
|
|
||||||
|
10.3. Modified Versions
|
||||||
|
|
||||||
|
If you create software not governed by this License, and you want to
|
||||||
|
create a new license for such software, you may create and use a
|
||||||
|
modified version of this License if you rename the license and remove
|
||||||
|
any references to the name of the license steward (except to note that
|
||||||
|
such modified license differs from this License).
|
||||||
|
|
||||||
|
10.4. Distributing Source Code Form that is Incompatible With Secondary
|
||||||
|
Licenses If You choose to distribute Source Code Form that is
|
||||||
|
Incompatible With Secondary Licenses under the terms of this version of
|
||||||
|
the License, the notice described in Exhibit B of this License must be
|
||||||
|
attached.
|
||||||
|
|
||||||
|
Exhibit A - Source Code Form License Notice
|
||||||
|
|
||||||
|
This Source Code Form is subject to the
|
||||||
|
terms of the Mozilla Public License, v.
|
||||||
|
2.0. If a copy of the MPL was not
|
||||||
|
distributed with this file, You can
|
||||||
|
obtain one at
|
||||||
|
http://mozilla.org/MPL/2.0/.
|
||||||
|
|
||||||
|
If it is not possible or desirable to put the notice in a particular file,
|
||||||
|
then You may include the notice in a location (such as a LICENSE file in a
|
||||||
|
relevant directory) where a recipient would be likely to look for such a
|
||||||
|
notice.
|
||||||
|
|
||||||
|
You may add additional accurate notices of copyright ownership.
|
||||||
|
|
||||||
|
Exhibit B - "Incompatible With Secondary Licenses" Notice
|
||||||
|
|
||||||
|
This Source Code Form is "Incompatible
|
||||||
|
With Secondary Licenses", as defined by
|
||||||
|
the Mozilla Public License, v. 2.0.
|
||||||
|
|
||||||
|
|
@ -0,0 +1,8 @@
|
||||||
|
TEST?=./...
|
||||||
|
|
||||||
|
test:
|
||||||
|
go test $(TEST) $(TESTARGS) -timeout=3s -parallel=4
|
||||||
|
go vet $(TEST)
|
||||||
|
go test $(TEST) -race
|
||||||
|
|
||||||
|
.PHONY: test
|
||||||
|
|
@ -0,0 +1,43 @@
|
||||||
|
# rootcerts
|
||||||
|
|
||||||
|
Functions for loading root certificates for TLS connections.
|
||||||
|
|
||||||
|
-----
|
||||||
|
|
||||||
|
Go's standard library `crypto/tls` provides a common mechanism for configuring
|
||||||
|
TLS connections in `tls.Config`. The `RootCAs` field on this struct is a pool
|
||||||
|
of certificates for the client to use as a trust store when verifying server
|
||||||
|
certificates.
|
||||||
|
|
||||||
|
This library contains utility functions for loading certificates destined for
|
||||||
|
that field, as well as one other important thing:
|
||||||
|
|
||||||
|
When the `RootCAs` field is `nil`, the standard library attempts to load the
|
||||||
|
host's root CA set. This behavior is OS-specific, and the Darwin
|
||||||
|
implementation contains [a bug that prevents trusted certificates from the
|
||||||
|
System and Login keychains from being loaded][1]. This library contains
|
||||||
|
Darwin-specific behavior that works around that bug.
|
||||||
|
|
||||||
|
[1]: https://github.com/golang/go/issues/14514
|
||||||
|
|
||||||
|
## Example Usage
|
||||||
|
|
||||||
|
Here's a snippet demonstrating how this library is meant to be used:
|
||||||
|
|
||||||
|
```go
|
||||||
|
func httpClient() (*http.Client, error)
|
||||||
|
tlsConfig := &tls.Config{}
|
||||||
|
err := rootcerts.ConfigureTLS(tlsConfig, &rootcerts.Config{
|
||||||
|
CAFile: os.Getenv("MYAPP_CAFILE"),
|
||||||
|
CAPath: os.Getenv("MYAPP_CAPATH"),
|
||||||
|
})
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
c := cleanhttp.DefaultClient()
|
||||||
|
t := cleanhttp.DefaultTransport()
|
||||||
|
t.TLSClientConfig = tlsConfig
|
||||||
|
c.Transport = t
|
||||||
|
return c, nil
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
@ -0,0 +1,9 @@
|
||||||
|
// Package rootcerts contains functions to aid in loading CA certificates for
|
||||||
|
// TLS connections.
|
||||||
|
//
|
||||||
|
// In addition, its default behavior on Darwin works around an open issue [1]
|
||||||
|
// in Go's crypto/x509 that prevents certicates from being loaded from the
|
||||||
|
// System or Login keychains.
|
||||||
|
//
|
||||||
|
// [1] https://github.com/golang/go/issues/14514
|
||||||
|
package rootcerts
|
||||||
|
|
@ -0,0 +1,103 @@
|
||||||
|
package rootcerts
|
||||||
|
|
||||||
|
import (
|
||||||
|
"crypto/tls"
|
||||||
|
"crypto/x509"
|
||||||
|
"fmt"
|
||||||
|
"io/ioutil"
|
||||||
|
"os"
|
||||||
|
"path/filepath"
|
||||||
|
)
|
||||||
|
|
||||||
|
// Config determines where LoadCACerts will load certificates from. When both
|
||||||
|
// CAFile and CAPath are blank, this library's functions will either load
|
||||||
|
// system roots explicitly and return them, or set the CertPool to nil to allow
|
||||||
|
// Go's standard library to load system certs.
|
||||||
|
type Config struct {
|
||||||
|
// CAFile is a path to a PEM-encoded certificate file or bundle. Takes
|
||||||
|
// precedence over CAPath.
|
||||||
|
CAFile string
|
||||||
|
|
||||||
|
// CAPath is a path to a directory populated with PEM-encoded certificates.
|
||||||
|
CAPath string
|
||||||
|
}
|
||||||
|
|
||||||
|
// ConfigureTLS sets up the RootCAs on the provided tls.Config based on the
|
||||||
|
// Config specified.
|
||||||
|
func ConfigureTLS(t *tls.Config, c *Config) error {
|
||||||
|
if t == nil {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
pool, err := LoadCACerts(c)
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
t.RootCAs = pool
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// LoadCACerts loads a CertPool based on the Config specified.
|
||||||
|
func LoadCACerts(c *Config) (*x509.CertPool, error) {
|
||||||
|
if c == nil {
|
||||||
|
c = &Config{}
|
||||||
|
}
|
||||||
|
if c.CAFile != "" {
|
||||||
|
return LoadCAFile(c.CAFile)
|
||||||
|
}
|
||||||
|
if c.CAPath != "" {
|
||||||
|
return LoadCAPath(c.CAPath)
|
||||||
|
}
|
||||||
|
|
||||||
|
return LoadSystemCAs()
|
||||||
|
}
|
||||||
|
|
||||||
|
// LoadCAFile loads a single PEM-encoded file from the path specified.
|
||||||
|
func LoadCAFile(caFile string) (*x509.CertPool, error) {
|
||||||
|
pool := x509.NewCertPool()
|
||||||
|
|
||||||
|
pem, err := ioutil.ReadFile(caFile)
|
||||||
|
if err != nil {
|
||||||
|
return nil, fmt.Errorf("Error loading CA File: %s", err)
|
||||||
|
}
|
||||||
|
|
||||||
|
ok := pool.AppendCertsFromPEM(pem)
|
||||||
|
if !ok {
|
||||||
|
return nil, fmt.Errorf("Error loading CA File: Couldn't parse PEM in: %s", caFile)
|
||||||
|
}
|
||||||
|
|
||||||
|
return pool, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// LoadCAPath walks the provided path and loads all certificates encounted into
|
||||||
|
// a pool.
|
||||||
|
func LoadCAPath(caPath string) (*x509.CertPool, error) {
|
||||||
|
pool := x509.NewCertPool()
|
||||||
|
walkFn := func(path string, info os.FileInfo, err error) error {
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
if info.IsDir() {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
|
pem, err := ioutil.ReadFile(path)
|
||||||
|
if err != nil {
|
||||||
|
return fmt.Errorf("Error loading file from CAPath: %s", err)
|
||||||
|
}
|
||||||
|
|
||||||
|
ok := pool.AppendCertsFromPEM(pem)
|
||||||
|
if !ok {
|
||||||
|
return fmt.Errorf("Error loading CA Path: Couldn't parse PEM in: %s", path)
|
||||||
|
}
|
||||||
|
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
|
err := filepath.Walk(caPath, walkFn)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
return pool, nil
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,12 @@
|
||||||
|
// +build !darwin
|
||||||
|
|
||||||
|
package rootcerts
|
||||||
|
|
||||||
|
import "crypto/x509"
|
||||||
|
|
||||||
|
// LoadSystemCAs does nothing on non-Darwin systems. We return nil so that
|
||||||
|
// default behavior of standard TLS config libraries is triggered, which is to
|
||||||
|
// load system certs.
|
||||||
|
func LoadSystemCAs() (*x509.CertPool, error) {
|
||||||
|
return nil, nil
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,48 @@
|
||||||
|
package rootcerts
|
||||||
|
|
||||||
|
import (
|
||||||
|
"crypto/x509"
|
||||||
|
"os/exec"
|
||||||
|
"path"
|
||||||
|
|
||||||
|
"github.com/mitchellh/go-homedir"
|
||||||
|
)
|
||||||
|
|
||||||
|
// LoadSystemCAs has special behavior on Darwin systems to work around
|
||||||
|
func LoadSystemCAs() (*x509.CertPool, error) {
|
||||||
|
pool := x509.NewCertPool()
|
||||||
|
|
||||||
|
for _, keychain := range certKeychains() {
|
||||||
|
err := addCertsFromKeychain(pool, keychain)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return pool, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
func addCertsFromKeychain(pool *x509.CertPool, keychain string) error {
|
||||||
|
cmd := exec.Command("/usr/bin/security", "find-certificate", "-a", "-p", keychain)
|
||||||
|
data, err := cmd.Output()
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
pool.AppendCertsFromPEM(data)
|
||||||
|
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
|
func certKeychains() []string {
|
||||||
|
keychains := []string{
|
||||||
|
"/System/Library/Keychains/SystemRootCertificates.keychain",
|
||||||
|
"/Library/Keychains/System.keychain",
|
||||||
|
}
|
||||||
|
home, err := homedir.Dir()
|
||||||
|
if err == nil {
|
||||||
|
loginKeychain := path.Join(home, "Library", "Keychains", "login.keychain")
|
||||||
|
keychains = append(keychains, loginKeychain)
|
||||||
|
}
|
||||||
|
return keychains
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,21 @@
|
||||||
|
The MIT License (MIT)
|
||||||
|
|
||||||
|
Copyright (c) 2013 Mitchell Hashimoto
|
||||||
|
|
||||||
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
of this software and associated documentation files (the "Software"), to deal
|
||||||
|
in the Software without restriction, including without limitation the rights
|
||||||
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
copies of the Software, and to permit persons to whom the Software is
|
||||||
|
furnished to do so, subject to the following conditions:
|
||||||
|
|
||||||
|
The above copyright notice and this permission notice shall be included in
|
||||||
|
all copies or substantial portions of the Software.
|
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
THE SOFTWARE.
|
||||||
|
|
@ -0,0 +1,14 @@
|
||||||
|
# go-homedir
|
||||||
|
|
||||||
|
This is a Go library for detecting the user's home directory without
|
||||||
|
the use of cgo, so the library can be used in cross-compilation environments.
|
||||||
|
|
||||||
|
Usage is incredibly simple, just call `homedir.Dir()` to get the home directory
|
||||||
|
for a user, and `homedir.Expand()` to expand the `~` in a path to the home
|
||||||
|
directory.
|
||||||
|
|
||||||
|
**Why not just use `os/user`?** The built-in `os/user` package requires
|
||||||
|
cgo on Darwin systems. This means that any Go code that uses that package
|
||||||
|
cannot cross compile. But 99% of the time the use for `os/user` is just to
|
||||||
|
retrieve the home directory, which we can do for the current user without
|
||||||
|
cgo. This library does that, enabling cross-compilation.
|
||||||
|
|
@ -0,0 +1,137 @@
|
||||||
|
package homedir
|
||||||
|
|
||||||
|
import (
|
||||||
|
"bytes"
|
||||||
|
"errors"
|
||||||
|
"os"
|
||||||
|
"os/exec"
|
||||||
|
"path/filepath"
|
||||||
|
"runtime"
|
||||||
|
"strconv"
|
||||||
|
"strings"
|
||||||
|
"sync"
|
||||||
|
)
|
||||||
|
|
||||||
|
// DisableCache will disable caching of the home directory. Caching is enabled
|
||||||
|
// by default.
|
||||||
|
var DisableCache bool
|
||||||
|
|
||||||
|
var homedirCache string
|
||||||
|
var cacheLock sync.RWMutex
|
||||||
|
|
||||||
|
// Dir returns the home directory for the executing user.
|
||||||
|
//
|
||||||
|
// This uses an OS-specific method for discovering the home directory.
|
||||||
|
// An error is returned if a home directory cannot be detected.
|
||||||
|
func Dir() (string, error) {
|
||||||
|
if !DisableCache {
|
||||||
|
cacheLock.RLock()
|
||||||
|
cached := homedirCache
|
||||||
|
cacheLock.RUnlock()
|
||||||
|
if cached != "" {
|
||||||
|
return cached, nil
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
cacheLock.Lock()
|
||||||
|
defer cacheLock.Unlock()
|
||||||
|
|
||||||
|
var result string
|
||||||
|
var err error
|
||||||
|
if runtime.GOOS == "windows" {
|
||||||
|
result, err = dirWindows()
|
||||||
|
} else {
|
||||||
|
// Unix-like system, so just assume Unix
|
||||||
|
result, err = dirUnix()
|
||||||
|
}
|
||||||
|
|
||||||
|
if err != nil {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
homedirCache = result
|
||||||
|
return result, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// Expand expands the path to include the home directory if the path
|
||||||
|
// is prefixed with `~`. If it isn't prefixed with `~`, the path is
|
||||||
|
// returned as-is.
|
||||||
|
func Expand(path string) (string, error) {
|
||||||
|
if len(path) == 0 {
|
||||||
|
return path, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
if path[0] != '~' {
|
||||||
|
return path, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
if len(path) > 1 && path[1] != '/' && path[1] != '\\' {
|
||||||
|
return "", errors.New("cannot expand user-specific home dir")
|
||||||
|
}
|
||||||
|
|
||||||
|
dir, err := Dir()
|
||||||
|
if err != nil {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
|
||||||
|
return filepath.Join(dir, path[1:]), nil
|
||||||
|
}
|
||||||
|
|
||||||
|
func dirUnix() (string, error) {
|
||||||
|
// First prefer the HOME environmental variable
|
||||||
|
if home := os.Getenv("HOME"); home != "" {
|
||||||
|
return home, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// If that fails, try getent
|
||||||
|
var stdout bytes.Buffer
|
||||||
|
cmd := exec.Command("getent", "passwd", strconv.Itoa(os.Getuid()))
|
||||||
|
cmd.Stdout = &stdout
|
||||||
|
if err := cmd.Run(); err != nil {
|
||||||
|
// If the error is ErrNotFound, we ignore it. Otherwise, return it.
|
||||||
|
if err != exec.ErrNotFound {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
if passwd := strings.TrimSpace(stdout.String()); passwd != "" {
|
||||||
|
// username:password:uid:gid:gecos:home:shell
|
||||||
|
passwdParts := strings.SplitN(passwd, ":", 7)
|
||||||
|
if len(passwdParts) > 5 {
|
||||||
|
return passwdParts[5], nil
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// If all else fails, try the shell
|
||||||
|
stdout.Reset()
|
||||||
|
cmd = exec.Command("sh", "-c", "cd && pwd")
|
||||||
|
cmd.Stdout = &stdout
|
||||||
|
if err := cmd.Run(); err != nil {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
|
||||||
|
result := strings.TrimSpace(stdout.String())
|
||||||
|
if result == "" {
|
||||||
|
return "", errors.New("blank output when reading home directory")
|
||||||
|
}
|
||||||
|
|
||||||
|
return result, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
func dirWindows() (string, error) {
|
||||||
|
// First prefer the HOME environmental variable
|
||||||
|
if home := os.Getenv("HOME"); home != "" {
|
||||||
|
return home, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
drive := os.Getenv("HOMEDRIVE")
|
||||||
|
path := os.Getenv("HOMEPATH")
|
||||||
|
home := drive + path
|
||||||
|
if drive == "" || path == "" {
|
||||||
|
home = os.Getenv("USERPROFILE")
|
||||||
|
}
|
||||||
|
if home == "" {
|
||||||
|
return "", errors.New("HOMEDRIVE, HOMEPATH, and USERPROFILE are blank")
|
||||||
|
}
|
||||||
|
|
||||||
|
return home, nil
|
||||||
|
}
|
||||||
|
|
@ -479,6 +479,12 @@
|
||||||
"revision": "6e85be8fee1dcaa02c0eaaac2df5a8fbecf94145",
|
"revision": "6e85be8fee1dcaa02c0eaaac2df5a8fbecf94145",
|
||||||
"revisionTime": "2016-09-30T03:51:02Z"
|
"revisionTime": "2016-09-30T03:51:02Z"
|
||||||
},
|
},
|
||||||
|
{
|
||||||
|
"checksumSHA1": "A1PcINvF3UiwHRKn8UcgARgvGRs=",
|
||||||
|
"path": "github.com/hashicorp/go-rootcerts",
|
||||||
|
"revision": "6bb64b370b90e7ef1fa532be9e591a81c3493e00",
|
||||||
|
"revisionTime": "2016-05-03T14:34:40Z"
|
||||||
|
},
|
||||||
{
|
{
|
||||||
"checksumSHA1": "BGODc7juQbdG3vNXHZG07kt+lKI=",
|
"checksumSHA1": "BGODc7juQbdG3vNXHZG07kt+lKI=",
|
||||||
"path": "github.com/hashicorp/go-sockaddr",
|
"path": "github.com/hashicorp/go-sockaddr",
|
||||||
|
|
@ -681,6 +687,12 @@
|
||||||
"revision": "cdac8253d00f2ecf0a0b19fbff173a9a72de4f82",
|
"revision": "cdac8253d00f2ecf0a0b19fbff173a9a72de4f82",
|
||||||
"revisionTime": "2016-08-04T03:23:30Z"
|
"revisionTime": "2016-08-04T03:23:30Z"
|
||||||
},
|
},
|
||||||
|
{
|
||||||
|
"checksumSHA1": "V/quM7+em2ByJbWBLOsEwnY3j/Q=",
|
||||||
|
"path": "github.com/mitchellh/go-homedir",
|
||||||
|
"revision": "b8bc1bf767474819792c23f32d8286a45736f1c6",
|
||||||
|
"revisionTime": "2016-12-03T19:45:07Z"
|
||||||
|
},
|
||||||
{
|
{
|
||||||
"checksumSHA1": "LUrnGREfnifW4WDMaavmc9MlLI0=",
|
"checksumSHA1": "LUrnGREfnifW4WDMaavmc9MlLI0=",
|
||||||
"path": "github.com/mitchellh/mapstructure",
|
"path": "github.com/mitchellh/mapstructure",
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue