Extend hcl2 support with more functions

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/github.com/hashicorp/go-cty-funcs/LICENSE

@@ -0,0 +1,354 @@
+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.
+

vendor/github.com/hashicorp/go-cty-funcs/cidr/host.go

@@ -0,0 +1,49 @@
+package cidr
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/apparentlymart/go-cidr/cidr"
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+	"github.com/zclconf/go-cty/cty/gocty"
+)
+
+// HostFunc is a function that calculates a full host IP address within a given
+// IP network address prefix.
+var HostFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "prefix",
+			Type: cty.String,
+		},
+		{
+			Name: "hostnum",
+			Type: cty.Number,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		var hostNum int
+		if err := gocty.FromCtyValue(args[1], &hostNum); err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+		_, network, err := net.ParseCIDR(args[0].AsString())
+		if err != nil {
+			return cty.UnknownVal(cty.String), fmt.Errorf("invalid CIDR expression: %s", err)
+		}
+
+		ip, err := cidr.Host(network, hostNum)
+		if err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+
+		return cty.StringVal(ip.String()), nil
+	},
+})
+
+// Host calculates a full host IP address within a given IP network address prefix.
+func Host(prefix, hostnum cty.Value) (cty.Value, error) {
+	return HostFunc.Call([]cty.Value{prefix, hostnum})
+}

vendor/github.com/hashicorp/go-cty-funcs/cidr/netmask.go

@@ -0,0 +1,34 @@
+package cidr
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+// NetmaskFunc is a function that converts an IPv4 address prefix given in CIDR
+// notation into a subnet mask address.
+var NetmaskFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "prefix",
+			Type: cty.String,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		_, network, err := net.ParseCIDR(args[0].AsString())
+		if err != nil {
+			return cty.UnknownVal(cty.String), fmt.Errorf("invalid CIDR expression: %s", err)
+		}
+
+		return cty.StringVal(net.IP(network.Mask).String()), nil
+	},
+})
+
+// Netmask converts an IPv4 address prefix given in CIDR notation into a subnet mask address.
+func Netmask(prefix cty.Value) (cty.Value, error) {
+	return NetmaskFunc.Call([]cty.Value{prefix})
+}

vendor/github.com/hashicorp/go-cty-funcs/cidr/subnet.go

@@ -0,0 +1,66 @@
+package cidr
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/apparentlymart/go-cidr/cidr"
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+	"github.com/zclconf/go-cty/cty/gocty"
+)
+
+// SubnetFunc is a function that calculates a subnet address within a given
+// IP network address prefix.
+var SubnetFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "prefix",
+			Type: cty.String,
+		},
+		{
+			Name: "newbits",
+			Type: cty.Number,
+		},
+		{
+			Name: "netnum",
+			Type: cty.Number,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		var newbits int
+		if err := gocty.FromCtyValue(args[1], &newbits); err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+		var netnum int
+		if err := gocty.FromCtyValue(args[2], &netnum); err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+
+		_, network, err := net.ParseCIDR(args[0].AsString())
+		if err != nil {
+			return cty.UnknownVal(cty.String), fmt.Errorf("invalid CIDR expression: %s", err)
+		}
+
+		// For portability with 32-bit systems where the subnet number will be
+		// a 32-bit int, we only allow extension of 32 bits in one call even if
+		// we're running on a 64-bit machine. (Of course, this is significant
+		// only for IPv6.)
+		if newbits > 32 {
+			return cty.UnknownVal(cty.String), fmt.Errorf("may not extend prefix by more than 32 bits")
+		}
+
+		newNetwork, err := cidr.Subnet(network, newbits, netnum)
+		if err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+
+		return cty.StringVal(newNetwork.String()), nil
+	},
+})
+
+// Subnet calculates a subnet address within a given IP network address prefix.
+func Subnet(prefix, newbits, netnum cty.Value) (cty.Value, error) {
+	return SubnetFunc.Call([]cty.Value{prefix, newbits, netnum})
+}

vendor/github.com/hashicorp/go-cty-funcs/cidr/subnets.go

@@ -0,0 +1,99 @@
+package cidr
+
+import (
+	"net"
+
+	"github.com/apparentlymart/go-cidr/cidr"
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+	"github.com/zclconf/go-cty/cty/gocty"
+)
+
+// SubnetsFunc is similar to SubnetFunc but calculates many consecutive subnet
+// addresses at once, rather than just a single subnet extension.
+var SubnetsFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "prefix",
+			Type: cty.String,
+		},
+	},
+	VarParam: &function.Parameter{
+		Name: "newbits",
+		Type: cty.Number,
+	},
+	Type: function.StaticReturnType(cty.List(cty.String)),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		_, network, err := net.ParseCIDR(args[0].AsString())
+		if err != nil {
+			return cty.UnknownVal(cty.String), function.NewArgErrorf(0, "invalid CIDR expression: %s", err)
+		}
+		startPrefixLen, _ := network.Mask.Size()
+
+		prefixLengthArgs := args[1:]
+		if len(prefixLengthArgs) == 0 {
+			return cty.ListValEmpty(cty.String), nil
+		}
+
+		var firstLength int
+		if err := gocty.FromCtyValue(prefixLengthArgs[0], &firstLength); err != nil {
+			return cty.UnknownVal(cty.String), function.NewArgError(1, err)
+		}
+		firstLength += startPrefixLen
+
+		retVals := make([]cty.Value, len(prefixLengthArgs))
+
+		current, _ := cidr.PreviousSubnet(network, firstLength)
+		for i, lengthArg := range prefixLengthArgs {
+			var length int
+			if err := gocty.FromCtyValue(lengthArg, &length); err != nil {
+				return cty.UnknownVal(cty.String), function.NewArgError(i+1, err)
+			}
+
+			if length < 1 {
+				return cty.UnknownVal(cty.String), function.NewArgErrorf(i+1, "must extend prefix by at least one bit")
+			}
+			// For portability with 32-bit systems where the subnet number
+			// will be a 32-bit int, we only allow extension of 32 bits in
+			// one call even if we're running on a 64-bit machine.
+			// (Of course, this is significant only for IPv6.)
+			if length > 32 {
+				return cty.UnknownVal(cty.String), function.NewArgErrorf(i+1, "may not extend prefix by more than 32 bits")
+			}
+			length += startPrefixLen
+			if length > (len(network.IP) * 8) {
+				protocol := "IP"
+				switch len(network.IP) * 8 {
+				case 32:
+					protocol = "IPv4"
+				case 128:
+					protocol = "IPv6"
+				}
+				return cty.UnknownVal(cty.String), function.NewArgErrorf(i+1, "would extend prefix to %d bits, which is too long for an %s address", length, protocol)
+			}
+
+			next, rollover := cidr.NextSubnet(current, length)
+			if rollover || !network.Contains(next.IP) {
+				// If we run out of suffix bits in the base CIDR prefix then
+				// NextSubnet will start incrementing the prefix bits, which
+				// we don't allow because it would then allocate addresses
+				// outside of the caller's given prefix.
+				return cty.UnknownVal(cty.String), function.NewArgErrorf(i+1, "not enough remaining address space for a subnet with a prefix of %d bits after %s", length, current.String())
+			}
+
+			current = next
+			retVals[i] = cty.StringVal(current.String())
+		}
+
+		return cty.ListVal(retVals), nil
+	},
+})
+
+// Subnets calculates a sequence of consecutive subnet prefixes that may be of
+// different prefix lengths under a common base prefix.
+func Subnets(prefix cty.Value, newbits ...cty.Value) (cty.Value, error) {
+	args := make([]cty.Value, len(newbits)+1)
+	args[0] = prefix
+	copy(args[1:], newbits)
+	return SubnetsFunc.Call(args)
+}

vendor/github.com/hashicorp/go-cty-funcs/crypto/bcrypt.go

@@ -0,0 +1,59 @@
+package crypto
+
+import (
+	"fmt"
+
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+	"github.com/zclconf/go-cty/cty/gocty"
+	"golang.org/x/crypto/bcrypt"
+)
+
+// BcryptFunc is a function that computes a hash of the given string using the
+// Blowfish cipher.
+var BcryptFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "str",
+			Type: cty.String,
+		},
+	},
+	VarParam: &function.Parameter{
+		Name: "cost",
+		Type: cty.Number,
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		defaultCost := 10
+
+		if len(args) > 1 {
+			var val int
+			if err := gocty.FromCtyValue(args[1], &val); err != nil {
+				return cty.UnknownVal(cty.String), err
+			}
+			defaultCost = val
+		}
+
+		if len(args) > 2 {
+			return cty.UnknownVal(cty.String), fmt.Errorf("bcrypt() takes no more than two arguments")
+		}
+
+		input := args[0].AsString()
+		out, err := bcrypt.GenerateFromPassword([]byte(input), defaultCost)
+		if err != nil {
+			return cty.UnknownVal(cty.String), fmt.Errorf("error occured generating password %s", err.Error())
+		}
+
+		return cty.StringVal(string(out)), nil
+	},
+})
+
+// Bcrypt computes a hash of the given string using the Blowfish cipher,
+// returning a string in the Modular Crypt Format usually expected in the
+// shadow password file on many Unix systems.
+func Bcrypt(str cty.Value, cost ...cty.Value) (cty.Value, error) {
+	args := make([]cty.Value, len(cost)+1)
+	args[0] = str
+	copy(args[1:], cost)
+	return BcryptFunc.Call(args)
+}

vendor/github.com/hashicorp/go-cty-funcs/crypto/hash.go

@@ -0,0 +1,27 @@
+package crypto
+
+import (
+	"hash"
+
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+func makeStringHashFunction(hf func() hash.Hash, enc func([]byte) string) function.Function {
+	return function.New(&function.Spec{
+		Params: []function.Parameter{
+			{
+				Name: "str",
+				Type: cty.String,
+			},
+		},
+		Type: function.StaticReturnType(cty.String),
+		Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+			s := args[0].AsString()
+			h := hf()
+			h.Write([]byte(s))
+			rv := enc(h.Sum(nil))
+			return cty.StringVal(rv), nil
+		},
+	})
+}

vendor/github.com/hashicorp/go-cty-funcs/crypto/md5.go

@@ -0,0 +1,18 @@
+package crypto
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+
+	"github.com/zclconf/go-cty/cty"
+)
+
+// Md5Func is a function that computes the MD5 hash of a given string and
+// encodes it with hexadecimal digits.
+var Md5Func = makeStringHashFunction(md5.New, hex.EncodeToString)
+
+// Md5 computes the MD5 hash of a given string and encodes it with hexadecimal
+// digits.
+func Md5(str cty.Value) (cty.Value, error) {
+	return Md5Func.Call([]cty.Value{str})
+}

vendor/github.com/hashicorp/go-cty-funcs/crypto/rsa.go

@@ -0,0 +1,64 @@
+package crypto
+
+import (
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"fmt"
+
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+// RsaDecryptFunc is a function that decrypts an RSA-encrypted ciphertext.
+var RsaDecryptFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "ciphertext",
+			Type: cty.String,
+		},
+		{
+			Name: "privatekey",
+			Type: cty.String,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		s := args[0].AsString()
+		key := args[1].AsString()
+
+		b, err := base64.StdEncoding.DecodeString(s)
+		if err != nil {
+			return cty.UnknownVal(cty.String), fmt.Errorf("failed to decode input %q: cipher text must be base64-encoded", s)
+		}
+
+		block, _ := pem.Decode([]byte(key))
+		if block == nil {
+			return cty.UnknownVal(cty.String), fmt.Errorf("failed to parse key: no key found")
+		}
+		if block.Headers["Proc-Type"] == "4,ENCRYPTED" {
+			return cty.UnknownVal(cty.String), fmt.Errorf(
+				"failed to parse key: password protected keys are not supported. Please decrypt the key prior to use",
+			)
+		}
+
+		x509Key, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+		if err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+
+		out, err := rsa.DecryptPKCS1v15(nil, x509Key, b)
+		if err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+
+		return cty.StringVal(string(out)), nil
+	},
+})
+
+// RsaDecrypt decrypts an RSA-encrypted ciphertext, returning the corresponding
+// cleartext.
+func RsaDecrypt(ciphertext, privatekey cty.Value) (cty.Value, error) {
+	return RsaDecryptFunc.Call([]cty.Value{ciphertext, privatekey})
+}

vendor/github.com/hashicorp/go-cty-funcs/crypto/sha.go

@@ -0,0 +1,40 @@
+package crypto
+
+import (
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/hex"
+
+	"github.com/zclconf/go-cty/cty"
+)
+
+// Sha1Func is a function that computes the SHA1 hash of a given string and
+// encodes it with hexadecimal digits.
+var Sha1Func = makeStringHashFunction(sha1.New, hex.EncodeToString)
+
+// Sha256Func is a function that computes the SHA256 hash of a given string and
+// encodes it with hexadecimal digits.
+var Sha256Func = makeStringHashFunction(sha256.New, hex.EncodeToString)
+
+// Sha512Func is a function that computes the SHA512 hash of a given string and
+// encodes it with hexadecimal digits.
+var Sha512Func = makeStringHashFunction(sha512.New, hex.EncodeToString)
+
+// Sha1 computes the SHA1 hash of a given string and encodes it with
+// hexadecimal digits.
+func Sha1(str cty.Value) (cty.Value, error) {
+	return Sha1Func.Call([]cty.Value{str})
+}
+
+// Sha256 computes the SHA256 hash of a given string and encodes it with
+// hexadecimal digits.
+func Sha256(str cty.Value) (cty.Value, error) {
+	return Sha256Func.Call([]cty.Value{str})
+}
+
+// Sha512 computes the SHA512 hash of a given string and encodes it with
+// hexadecimal digits.
+func Sha512(str cty.Value) (cty.Value, error) {
+	return Sha512Func.Call([]cty.Value{str})
+}

vendor/github.com/hashicorp/go-cty-funcs/encoding/base64.go

@@ -0,0 +1,71 @@
+package encoding
+
+import (
+	"encoding/base64"
+	"fmt"
+	"log"
+	"unicode/utf8"
+
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+// Base64DecodeFunc is a function that decodes a string containing a base64 sequence.
+var Base64DecodeFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "str",
+			Type: cty.String,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (cty.Value, error) {
+		s := args[0].AsString()
+		sDec, err := base64.StdEncoding.DecodeString(s)
+		if err != nil {
+			return cty.UnknownVal(cty.String), fmt.Errorf("failed to decode base64 data '%s'", s)
+		}
+		if !utf8.Valid([]byte(sDec)) {
+			log.Printf("[DEBUG] the result of decoding the the provided string is not valid UTF-8: %s", sDec)
+			return cty.UnknownVal(cty.String), fmt.Errorf("the result of decoding the the provided string is not valid UTF-8")
+		}
+		return cty.StringVal(string(sDec)), nil
+	},
+})
+
+// Base64EncodeFunc is a function that encodes a string to a base64 sequence.
+var Base64EncodeFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "str",
+			Type: cty.String,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (cty.Value, error) {
+		return cty.StringVal(base64.StdEncoding.EncodeToString([]byte(args[0].AsString()))), nil
+	},
+})
+
+// Base64Decode decodes a string containing a base64 sequence.
+//
+// Terraform uses the "standard" Base64 alphabet as defined in RFC 4648 section 4.
+//
+// Strings in the Terraform language are sequences of unicode characters rather
+// than bytes, so this function will also interpret the resulting bytes as
+// UTF-8. If the bytes after Base64 decoding are _not_ valid UTF-8, this function
+// produces an error.
+func Base64Decode(str cty.Value) (cty.Value, error) {
+	return Base64DecodeFunc.Call([]cty.Value{str})
+}
+
+// Base64Encode applies Base64 encoding to a string.
+//
+// Terraform uses the "standard" Base64 alphabet as defined in RFC 4648 section 4.
+//
+// Strings in the Terraform language are sequences of unicode characters rather
+// than bytes, so this function will first encode the characters from the string
+// as UTF-8, and then apply Base64 encoding to the result.
+func Base64Encode(str cty.Value) (cty.Value, error) {
+	return Base64EncodeFunc.Call([]cty.Value{str})
+}

vendor/github.com/hashicorp/go-cty-funcs/encoding/url.go

@@ -0,0 +1,34 @@
+package encoding
+
+import (
+	"net/url"
+
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+// URLEncodeFunc is a function that applies URL encoding to a given string.
+var URLEncodeFunc = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "str",
+			Type: cty.String,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (cty.Value, error) {
+		return cty.StringVal(url.QueryEscape(args[0].AsString())), nil
+	},
+})
+
+// URLEncode applies URL encoding to a given string.
+//
+// This function identifies characters in the given string that would have a
+// special meaning when included as a query string argument in a URL and
+// escapes them using RFC 3986 "percent encoding".
+//
+// If the given string contains non-ASCII characters, these are first encoded as
+// UTF-8 and then percent encoding is applied separately to each UTF-8 byte.
+func URLEncode(str cty.Value) (cty.Value, error) {
+	return URLEncodeFunc.Call([]cty.Value{str})
+}

vendor/github.com/hashicorp/go-cty-funcs/uuid/uuid_v4.go

@@ -0,0 +1,28 @@
+package uuid
+
+import (
+	"github.com/google/uuid"
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+var V4Func = function.New(&function.Spec{
+	Params: []function.Parameter{},
+	Type:   function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		uuid, err := uuid.NewRandom()
+		if err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+		return cty.StringVal(uuid.String()), nil
+	},
+})
+
+// V4 generates and returns a Type-4 UUID in the standard hexadecimal string
+// format.
+//
+// This is not a "pure" function: it will generate a different result for each
+// call.
+func V4() (cty.Value, error) {
+	return V4Func.Call(nil)
+}

vendor/github.com/hashicorp/go-cty-funcs/uuid/uuid_v5.go

@@ -0,0 +1,51 @@
+package uuid
+
+import (
+	"fmt"
+
+	uuidv5 "github.com/google/uuid"
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+var V5Func = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "namespace",
+			Type: cty.String,
+		},
+		{
+			Name: "name",
+			Type: cty.String,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		var namespace uuidv5.UUID
+		switch {
+		case args[0].AsString() == "dns":
+			namespace = uuidv5.NameSpaceDNS
+		case args[0].AsString() == "url":
+			namespace = uuidv5.NameSpaceURL
+		case args[0].AsString() == "oid":
+			namespace = uuidv5.NameSpaceOID
+		case args[0].AsString() == "x500":
+			namespace = uuidv5.NameSpaceX500
+		default:
+			if namespace, err = uuidv5.Parse(args[0].AsString()); err != nil {
+				return cty.UnknownVal(cty.String), fmt.Errorf("uuidv5() doesn't support namespace %s (%v)", args[0].AsString(), err)
+			}
+		}
+		val := args[1].AsString()
+		return cty.StringVal(uuidv5.NewSHA1(namespace, []byte(val)).String()), nil
+	},
+})
+
+// V5 generates and returns a Type-5 UUID in the standard hexadecimal
+// string format.
+//
+// This is not a "pure" function: it will generate a different result for each
+// call.
+func V5(namespace cty.Value, name cty.Value) (cty.Value, error) {
+	return V5Func.Call([]cty.Value{namespace, name})
+}