diff options
Diffstat (limited to 'internal/utils')
| -rw-r--r-- | internal/utils/utils.go | 47 | ||||
| -rw-r--r-- | internal/utils/x509.go | 487 |
2 files changed, 0 insertions, 534 deletions
diff --git a/internal/utils/utils.go b/internal/utils/utils.go deleted file mode 100644 index 5b27868..0000000 --- a/internal/utils/utils.go +++ /dev/null @@ -1,47 +0,0 @@ -package utils - -import ( - "crypto/sha256" - "fmt" - "os" - - "gitlab.torproject.org/rgdd/ct/pkg/metadata" -) - -// Logs select logs that count towards CT-compliance checks. Logs that don't -// have a description are skipped after printing a warning. -func Logs(md metadata.Metadata) (logs []metadata.Log) { - for _, operators := range md.Operators { - for _, log := range operators.Logs { - if log.Description == nil { - fmt.Fprintf(os.Stderr, "WARNING: skipping log without description") - continue - } - if log.State == nil { - continue // skip logs with unknown states - } - if log.State.Name == metadata.LogStatePending { - continue // pending logs do not count towards CT-compliance - } - if log.State.Name == metadata.LogStateRetired { - continue // retired logs are not necessarily reachable - } - if log.State.Name == metadata.LogStateRejected { - continue // rejected logs do not count towards CT-compliance - } - - logs = append(logs, log) - } - } - return -} - -// Proof formats hashes so that they can be passed to the merkle package -func Proof(hashes [][]byte) (p [][sha256.Size]byte) { - for _, hash := range hashes { - var h [sha256.Size]byte - copy(h[:], hash) - p = append(p, h) - } - return -} diff --git a/internal/utils/x509.go b/internal/utils/x509.go deleted file mode 100644 index bf99334..0000000 --- a/internal/utils/x509.go +++ /dev/null @@ -1,487 +0,0 @@ -package utils - -import ( - "fmt" - - ct "github.com/google/certificate-transparency-go" - "github.com/google/certificate-transparency-go/asn1" - "github.com/google/certificate-transparency-go/x509/pkix" -) - -// Mozilla Public License Version 2.0 -// ================================== -// -// 1. Definitions -// -------------- -// -// 1.1. "Contributor" -// -// means each individual or legal entity that creates, contributes to -// the creation of, or owns Covered Software. -// -// 1.2. "Contributor Version" -// -// means the combination of the Contributions of others (if any) used -// by a Contributor and that particular Contributor's Contribution. -// -// 1.3. "Contribution" -// -// means Covered Software of a particular Contributor. -// -// 1.4. "Covered Software" -// -// means Source Code Form to which the initial Contributor has attached -// the notice in Exhibit A, the Executable Form of such Source Code -// Form, and Modifications of such Source Code Form, in each case -// including portions thereof. -// -// 1.5. "Incompatible With Secondary Licenses" -// -// means -// -// (a) that the initial Contributor has attached the notice described -// in Exhibit B to the Covered Software; or -// -// (b) that the Covered Software was made available under the terms of -// version 1.1 or earlier of the License, but not also under the -// terms of a Secondary License. -// -// 1.6. "Executable Form" -// -// means any form of the work other than Source Code Form. -// -// 1.7. "Larger Work" -// -// means a work that combines Covered Software with other material, in -// a separate file or files, that is not Covered Software. -// -// 1.8. "License" -// -// means this document. -// -// 1.9. "Licensable" -// -// means having the right to grant, to the maximum extent possible, -// whether at the time of the initial grant or subsequently, any and -// all of the rights conveyed by this License. -// -// 1.10. "Modifications" -// -// means any of the following: -// -// (a) any file in Source Code Form that results from an addition to, -// deletion from, or modification of the contents of Covered -// Software; or -// -// (b) any new file in Source Code Form that contains any Covered -// Software. -// -// 1.11. "Patent Claims" of a Contributor -// -// means any patent claim(s), including without limitation, method, -// process, and apparatus claims, in any patent Licensable by such -// Contributor that would be infringed, but for the grant of the -// License, by the making, using, selling, offering for sale, having -// made, import, or transfer of either its Contributions or its -// Contributor Version. -// -// 1.12. "Secondary License" -// -// means either the GNU General Public License, Version 2.0, the GNU -// Lesser General Public License, Version 2.1, the GNU Affero General -// Public License, Version 3.0, or any later versions of those -// licenses. -// -// 1.13. "Source Code Form" -// -// means the form of the work preferred for making modifications. -// -// 1.14. "You" (or "Your") -// -// means an individual or a legal entity exercising rights under this -// License. For legal entities, "You" includes any entity that -// controls, is controlled by, or is under common control with You. For -// purposes of this definition, "control" means (a) the power, direct -// or indirect, to cause the direction or management of such entity, -// whether by contract or otherwise, or (b) ownership of more than -// fifty percent (50%) of the outstanding shares or beneficial -// ownership of such entity. -// -// 2. License Grants and Conditions -// -------------------------------- -// -// 2.1. Grants -// -// Each Contributor hereby grants You a world-wide, royalty-free, -// non-exclusive license: -// -// (a) under intellectual property rights (other than patent or trademark) -// -// Licensable by such Contributor to use, reproduce, make available, -// modify, display, perform, distribute, and otherwise exploit its -// Contributions, either on an unmodified basis, with Modifications, or -// as part of a Larger Work; and -// -// (b) under Patent Claims of such Contributor to make, use, sell, offer -// -// for sale, have made, import, and otherwise transfer either its -// Contributions or its Contributor Version. -// -// 2.2. Effective Date -// -// The licenses granted in Section 2.1 with respect to any Contribution -// become effective for each Contribution on the date the Contributor first -// distributes such Contribution. -// -// 2.3. Limitations on Grant Scope -// -// The licenses granted in this Section 2 are the only rights granted under -// this License. No additional rights or licenses will be implied from the -// distribution or licensing of Covered Software under this License. -// Notwithstanding Section 2.1(b) above, no patent license is granted by a -// Contributor: -// -// (a) for any code that a Contributor has removed from Covered Software; -// -// or -// -// (b) for infringements caused by: (i) Your and any other third party's -// -// modifications of Covered Software, or (ii) the combination of its -// Contributions with other software (except as part of its Contributor -// Version); or -// -// (c) under Patent Claims infringed by Covered Software in the absence of -// -// its Contributions. -// -// This License does not grant any rights in the trademarks, service marks, -// or logos of any Contributor (except as may be necessary to comply with -// the notice requirements in Section 3.4). -// -// 2.4. Subsequent Licenses -// -// No Contributor makes additional grants as a result of Your choice to -// distribute the Covered Software under a subsequent version of this -// License (see Section 10.2) or under the terms of a Secondary License (if -// permitted under the terms of Section 3.3). -// -// 2.5. Representation -// -// Each Contributor represents that the Contributor believes its -// Contributions are its original creation(s) or it has sufficient rights -// to grant the rights to its Contributions conveyed by this License. -// -// 2.6. Fair Use -// -// This License is not intended to limit any rights You have under -// applicable copyright doctrines of fair use, fair dealing, or other -// equivalents. -// -// 2.7. Conditions -// -// Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted -// in Section 2.1. -// -// 3. Responsibilities -// ------------------- -// -// 3.1. Distribution of Source Form -// -// All distribution of Covered Software in Source Code Form, including any -// Modifications that You create or to which You contribute, must be under -// the terms of this License. You must inform recipients that the Source -// Code Form of the Covered Software is governed by the terms of this -// License, and how they can obtain a copy of this License. You may not -// attempt to alter or restrict the recipients' rights in the Source Code -// Form. -// -// 3.2. Distribution of Executable Form -// -// If You distribute Covered Software in Executable Form then: -// -// (a) such Covered Software must also be made available in Source Code -// -// Form, as described in Section 3.1, and You must inform recipients of -// the Executable Form how they can obtain a copy of such Source Code -// Form by reasonable means in a timely manner, at a charge no more -// than the cost of distribution to the recipient; and -// -// (b) You may distribute such Executable Form under the terms of this -// -// License, or sublicense it under different terms, provided that the -// license for the Executable Form does not attempt to limit or alter -// the recipients' rights in the Source Code Form under this License. -// -// 3.3. Distribution of a Larger Work -// -// You may create and distribute a Larger Work under terms of Your choice, -// provided that You also comply with the requirements of this License for -// the Covered Software. If the Larger Work is a combination of Covered -// Software with a work governed by one or more Secondary Licenses, and the -// Covered Software is not Incompatible With Secondary Licenses, this -// License permits You to additionally distribute such Covered Software -// under the terms of such Secondary License(s), so that the recipient of -// the Larger Work may, at their option, further distribute the Covered -// Software under the terms of either this License or such Secondary -// License(s). -// -// 3.4. Notices -// -// You may not remove or alter the substance of any license notices -// (including copyright notices, patent notices, disclaimers of warranty, -// or limitations of liability) contained within the Source Code Form of -// the Covered Software, except that You may alter any license notices to -// the extent required to remedy known factual inaccuracies. -// -// 3.5. Application of Additional Terms -// -// You may choose to offer, and to charge a fee for, warranty, support, -// indemnity or liability obligations to one or more recipients of Covered -// Software. However, You may do so only on Your own behalf, and not on -// behalf of any Contributor. You must make it absolutely clear that any -// such warranty, support, indemnity, or liability obligation is offered by -// You alone, and You hereby agree to indemnify every Contributor for any -// liability incurred by such Contributor as a result of warranty, support, -// indemnity or liability terms You offer. You may include additional -// disclaimers of warranty and limitations of liability specific to any -// jurisdiction. -// -// 4. Inability to Comply Due to Statute or Regulation -// --------------------------------------------------- -// -// If it is impossible for You to comply with any of the terms of this -// License with respect to some or all of the Covered Software due to -// statute, judicial order, or regulation then You must: (a) comply with -// the terms of this License to the maximum extent possible; and (b) -// describe the limitations and the code they affect. Such description must -// be placed in a text file included with all distributions of the Covered -// Software under this License. Except to the extent prohibited by statute -// or regulation, such description must be sufficiently detailed for a -// recipient of ordinary skill to be able to understand it. -// -// 5. Termination -// -------------- -// -// 5.1. The rights granted under this License will terminate automatically -// if You fail to comply with any of its terms. However, if You become -// compliant, then the rights granted under this License from a particular -// Contributor are reinstated (a) provisionally, unless and until such -// Contributor explicitly and finally terminates Your grants, and (b) on an -// ongoing basis, if such Contributor fails to notify You of the -// non-compliance by some reasonable means prior to 60 days after You have -// come back into compliance. Moreover, Your grants from a particular -// Contributor are reinstated on an ongoing basis if such Contributor -// notifies You of the non-compliance by some reasonable means, this is the -// first time You have received notice of non-compliance with this License -// from such Contributor, and You become compliant prior to 30 days after -// Your receipt of the notice. -// -// 5.2. If You initiate litigation against any entity by asserting a patent -// infringement claim (excluding declaratory judgment actions, -// counter-claims, and cross-claims) alleging that a Contributor Version -// directly or indirectly infringes any patent, then the rights granted to -// You by any and all Contributors for the Covered Software under Section -// 2.1 of this License shall terminate. -// -// 5.3. In the event of termination under Sections 5.1 or 5.2 above, all -// end user license agreements (excluding distributors and resellers) which -// have been validly granted by You or Your distributors under this License -// prior to termination shall survive termination. -// -// ************************************************************************ -// * * -// * 6. Disclaimer of Warranty * -// * ------------------------- * -// * * -// * Covered Software is provided under this License on an "as is" * -// * basis, without warranty of any kind, either expressed, implied, or * -// * statutory, including, without limitation, warranties that the * -// * Covered Software is free of defects, merchantable, fit for a * -// * particular purpose or non-infringing. 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, You * -// * (not any Contributor) assume the cost of any necessary servicing, * -// * repair, or correction. This disclaimer of warranty constitutes an * -// * essential part of this License. No use of any Covered Software is * -// * authorized under this License except under this disclaimer. * -// * * -// ************************************************************************ -// -// ************************************************************************ -// * * -// * 7. Limitation of Liability * -// * -------------------------- * -// * * -// * Under no circumstances and under no legal theory, whether tort * -// * (including negligence), contract, or otherwise, shall any * -// * Contributor, or anyone who distributes Covered Software as * -// * permitted above, be liable to You for any direct, indirect, * -// * special, incidental, or consequential damages of any 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 -// ------------- -// -// 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. -// -// From: -// https://gitlab.torproject.org/tpo/onion-services/sauteed-onions/monitor/-/blob/main/follow-go/main.go#L115-124 -// https://gitlab.torproject.org/tpo/onion-services/sauteed-onions/monitor/-/blob/main/follow-go/x509.go -// https://github.com/SSLMate/certspotter/blob/54f34077d3bebe8aafce07dcfbffeb928c6e1d04/x509.go#L380 - -func SANsFromLeafEntries(startIndex int64, leafEntries []ct.LeafEntry) (sans []string, errs []error) { - for offset, leafEntry := range leafEntries { - leafIndex := startIndex + int64(offset) - e, err := ct.LogEntryFromLeaf(leafIndex, &leafEntry) - if err != nil { - errs = append(errs, fmt.Errorf("leaf at index %d: %v", leafIndex, err)) - continue - } - s, err := sansFromLogEntry(e) - if err != nil { - errs = append(errs, fmt.Errorf("leaf at index %d: %v", leafIndex, err)) - } - sans = append(sans, s...) - } - return -} - -func sansFromLogEntry(entry *ct.LogEntry) ([]string, error) { - if entry.Precert == nil && entry.X509Cert == nil { - return nil, fmt.Errorf("no (pre)cert in log entry") - } - if entry.Precert != nil && entry.X509Cert != nil { - return nil, fmt.Errorf("both precert and cert in log entry") - } - - var exts []pkix.Extension - if entry.Precert != nil { - exts = entry.Precert.TBSCertificate.Extensions - } - if entry.X509Cert != nil { - exts = entry.X509Cert.Extensions - } - - var sans []string - for _, ext := range exts { - if ext.Id.Equal(asn1.ObjectIdentifier{2, 5, 29, 17}) { - moreSANs, err := extract(ext) - if err != nil { - return nil, fmt.Errorf("parse: %v", err) - } - - sans = append(sans, moreSANs...) - } - } - return sans, nil -} - -func extract(extSAN pkix.Extension) ([]string, error) { - var seq asn1.RawValue - rest, err := asn1.Unmarshal(extSAN.Value, &seq) - if err != nil { - return nil, fmt.Errorf("failed to parse subjectAltName extension: %v", err) - } - if len(rest) != 0 { - // Don't complain if the SAN is followed by exactly one zero byte, which is a common error. - if !(len(rest) == 1 && rest[0] == 0) { - return nil, fmt.Errorf("trailing data in subjectAltName extension: %v", rest) - } - } - if !seq.IsCompound || seq.Tag != 16 || seq.Class != 0 { - return nil, fmt.Errorf("failed to parse subjectAltName extension: bad SAN sequence") - } - - sans := []string{} - buf := seq.Bytes - for len(buf) > 0 { - var val asn1.RawValue - var err error - buf, err = asn1.Unmarshal(buf, &val) - if err != nil { - return nil, fmt.Errorf("failed to parse subjectAltName extension item: %v", err) - } - - sans = append(sans, string(val.Bytes)) - } - return sans, nil -} |