#pragma once

#include "types.hh"
#include "hash.hh"

#include <map>


namespace nix {


/* Extension of derivations in the Nix store. */
const string drvExtension = ".drv";


/* Abstract syntax of derivations. */

struct DerivationOutput
{
    Path path;
    string hashAlgo; /* hash used for expected hash computation */
    string hash; /* expected hash, may be null */
    DerivationOutput()
    {
    }
    DerivationOutput(Path path, string hashAlgo, string hash)
    {
        this->path = path;
        this->hashAlgo = hashAlgo;
        this->hash = hash;
    }
    void parseHashInfo(bool & recursive, HashType & hashType, Hash & hash) const;
};

typedef std::map<string, DerivationOutput> DerivationOutputs;

/* For inputs that are sub-derivations, we specify exactly which
   output IDs we are interested in. */
typedef std::map<Path, StringSet> DerivationInputs;

typedef std::map<string, string> StringPairs;

struct Derivation
{
    DerivationOutputs outputs; /* keyed on symbolic IDs */
    DerivationInputs inputDrvs; /* inputs that are sub-derivations */
    PathSet inputSrcs; /* inputs that are sources */
    string platform;
    Path builder;
    Strings args;
    StringPairs env;
};


class StoreAPI;


/* Write a derivation to the Nix store, and return its path. */
Path writeDerivation(StoreAPI & store,
    const Derivation & drv, const string & name, bool repair = false);

/* Read a derivation from a file. */
Derivation readDerivation(const Path & drvPath);

/* Print a derivation. */
string unparseDerivation(const Derivation & drv);

/* Check whether a file name ends with the extensions for
   derivations. */
bool isDerivation(const string & fileName);

/* Return true iff this is a fixed-output derivation. */
bool isFixedOutputDrv(const Derivation & drv);

Hash hashDerivationModulo(StoreAPI & store, Derivation drv);

/* Memoisation of hashDerivationModulo(). */
typedef std::map<Path, Hash> DrvHashes;

extern DrvHashes drvHashes;

/* Split a string specifying a derivation and a set of outputs
   (/nix/store/hash-foo!out1,out2,...) into the derivation path and
   the outputs. */
typedef std::pair<string, std::set<string> > DrvPathWithOutputs;
DrvPathWithOutputs parseDrvPathWithOutputs(const string & s);

Path makeDrvPathWithOutputs(const Path & drvPath, const std::set<string> & outputs);

bool wantOutput(const string & output, const std::set<string> & wanted);

PathSet outputPaths(const Derivation & drv);

}
</div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/networking.scm?id=82a7530098b8c9bdf5fd1e563160d53e482bba18&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-10-20 00:33:26 +0200'>2023-10-20</span></td><td><a href='/guix/commit/gnu/services/networking.scm?id=82f9e5ac97e076d57b8502c920ac770a82879b9a'>services: nftables: Tighten the default rules.</a><span class='msg-avail'>...<span class='msg-tooltip'>Packets for local host IP ranges should be coming only over lo.  If that is
not the case, we should drop them.  Use iif for the check instead of iifname,
lo is guaranteed to exists, and iif is faster.

* gnu/services/networking.scm (%default-nftables-ruleset): Tighten the rules.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Tomas Volf</td></tr>
<tr><td><span title='2023-10-14 22:41:43 +0200'>2023-10-14</span></td><td><a href='/guix/commit/gnu/services/networking.scm?id=489abccd5fb029be7277602058c81487d4ca07ec'>services: dhcp-client-service-type: Support DDNS.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/networking.scm (dhcp-client-shepherd-service): Enable -I
  flag on dhclient.

Co-authored-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Lilah Tascheter</td></tr>
<tr><td><span title='2023-09-22 01:29:18 +0800'>2023-09-22</span></td><td><a href='/guix/commit/gnu/services/networking.scm?id=4163c617b84802fbe780b9668bb092eab479fc28'>services: nftables: Add 'configuration' action.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/networking.scm (nftables-shepherd-service)[actions]: New field.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2023-09-17 16:29:19 +0200'>2023-09-17</span></td><td><a href='/guix/commit/gnu/services/networking.scm?id=fc3a53525ab3dcaf7c22eec8d62294017f9760fe'>services: dhcp-client: Fix name of the provision accessor.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to 04f71edb73205d0bb82404de28a70ae17b897429.

* gnu/services/networking.scm (&lt;dhcp-client-configuration&gt;)[shepherd-provision]:
Fix accessor name.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-09-17 15:31:03 +0200'>2023-09-17</span></td><td><a href='/guix/commit/gnu/services/networking.scm?id=04f71edb73205d0bb82404de28a70ae17b897429'>services: dhcp-client-configuration: Allow provision override.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/networking.scm (&lt;dhcp-client-configuration&gt;)[shepherd-provision]:
New field.
(dhcp-client-shepherd-service): Honor it.
* doc/guix.texi (Networking Setup): Document it.

Co-authored-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Alexey Abramov</td></tr>
<tr><td><span title='2023-09-08 18:53:47 +0800'>2023-09-08</span></td><td><a href='/guix/commit/gnu/services/networking.scm?id=0fbeeee7e9f173b9e3143eb460a1102b9ea71533'>services: Open vSwitch: Depend on 'user-processes' target.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/networking.scm (openvswitch-shepherd-service)[ovsdb](requirement):
Add user-processes.
</span></span></td><td>Marius Bakke</td></tr>