feat(ssh): SSH configuration parser #35027

test/functional/lua/ssh_spec.lua

@@ -0,0 +1,78 @@
+local t = require('test.testutil')
+local parser = require('vim.net._ssh')
+local eq = t.eq
+
+describe('SSH parser', function()
+  it('parses SSH configuration strings', function()
+    local config = [[
+      Host *
+        ConnectTimeout 10
+        ServerAliveInterval 60
+        ServerAliveCountMax 3
+        # Use a specific key for any host not otherwise specified
+        # IdentityFile ~/.ssh/id_rsa
+
+      Host=dev
+        HostName=dev.example.com
+        User=devuser
+        Port=2222
+        IdentityFile=~/.ssh/id_rsa_dev
+
+      Host prod test
+        HostName 198.51.100.10
+        User admin
+        Port 22
+        IdentityFile ~/.ssh/id_rsa_prod
+        ForwardAgent yes
+
+      Host test
+        IdentitiesOnly yes
+
+      Host "quoted string"
+        User quote
+        Port 22
+
+      Match host foo host gh
+        HostName github.com
+        User git
+        IdentityFile ~/.ssh/id_rsa_github
+        IdentitiesOnly yes
+    ]]
+
+    eq({
+      'dev',
+      'prod',
+      'test',
+      'quoted string',
+      'gh',
+    }, parser.parse_ssh_config(config))
+  end)
+
+  it('fails when a quote is not closed', function()
+    local config = [[
+      Host prod dev "test prod my
+        HostName 198.51.100.10
+        User admin
+        Port 22
+        IdentityFile ~/.ssh/id_rsa_prod
+        ForwardAgent yes
+    ]]
+
+    local ok, _ = pcall(parser.parse_ssh_config, config)
+    eq(false, ok)
+  end)
+
+  it('fails when the line ends with a single backslash', function()
+    local config = [[
+      Host prod test
+        HostName 198.51.100.10
+        User admin\
+        Port 22
+        IdentityFile ~/.ssh/id_rsa_prod
+        ForwardAgent yes
+    ]]
+
+    local ok, _ = pcall(parser.parse_ssh_config, config)
+    eq(false, ok)
+  end)
+end)