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Add user@address:port support

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This patch allows users to specify the connection port
in the store URLS like so:

```
nix store info --store "ssh-ng://localhost:22" --json
```

Previously this failed with: `error: failed to start SSH connection to 'localhost:22'`,
because the code did not distinguish the port from the hostname. This
patch remedies that problem by introducing a ParsedURL::Authority type
for working with parsed authority components of URIs.

Now that the URL parsing code is less ad-hoc we can
add more long-awaited fixes for specifying SSH connection
ports in store URIs.

Builds upon the work from bd1d2d1041.

Co-authored-by: Sergei Zimmerman <sergei@zimmerman.foo>
Co-authored-by: John Ericson <John.Ericson@Obsidian.Systems>
This commit is contained in:
Maciej Krüger 2020-04-25 16:07:41 +02:00 • committed by Sergei Zimmerman
parent c98af65da6
commit 49ba06175e
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18 changed files with 312 additions and 101 deletions
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23
src/libstore/common-ssh-store-config.cc
View file

@ -5,33 +5,22 @@
namespace nix {
static std::string extractConnStr(std::string_view scheme, std::string_view _connStr)
CommonSSHStoreConfig::CommonSSHStoreConfig(std::string_view scheme, std::string_view authority, const Params & params)
: CommonSSHStoreConfig(scheme, ParsedURL::Authority::parse(authority), params)
{
if (_connStr.empty())
throw UsageError("`%s` store requires a valid SSH host as the authority part in Store URI", scheme);
std::string connStr{_connStr};
std::smatch result;
static std::regex v6AddrRegex("^((.*)@)?\\[(.*)\\]$");
if (std::regex_match(connStr, result, v6AddrRegex)) {
connStr = result[1].matched ? result.str(1) + result.str(3) : result.str(3);
}
return connStr;
}
CommonSSHStoreConfig::CommonSSHStoreConfig(std::string_view scheme, std::string_view host, const Params & params)
CommonSSHStoreConfig::CommonSSHStoreConfig(
std::string_view scheme, const ParsedURL::Authority & authority, const Params & params)
: StoreConfig(params)
, host(extractConnStr(scheme, host))
, authority(authority)
{
}
SSHMaster CommonSSHStoreConfig::createSSHMaster(bool useMaster, Descriptor logFD) const
{
return {
host,
authority,
sshKey.get(),
sshPublicHostKey.get(),
useMaster,