github.com/Lephar/snapd@v0.0.0-20210825215435-c7fba9cef4d2/snap/naming/tag_test.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2020 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package naming_test
    21  
    22  import (
    23  	. "gopkg.in/check.v1"
    24  
    25  	"github.com/snapcore/snapd/snap/naming"
    26  )
    27  
    28  type tagSuite struct{}
    29  
    30  var _ = Suite(&tagSuite{})
    31  
    32  func (s *tagSuite) TestParseSecurityTag(c *C) {
    33  	// valid snap names, snap instances, app names and hook names are accepted.
    34  	tag, err := naming.ParseSecurityTag("snap.pkg.app")
    35  	c.Assert(err, IsNil)
    36  	c.Check(tag.String(), Equals, "snap.pkg.app")
    37  	c.Check(tag.InstanceName(), Equals, "pkg")
    38  	c.Check(tag.(naming.AppSecurityTag).AppName(), Equals, "app")
    39  
    40  	tag, err = naming.ParseSecurityTag("snap.pkg_key.app")
    41  	c.Assert(err, IsNil)
    42  	c.Check(tag.String(), Equals, "snap.pkg_key.app")
    43  	c.Check(tag.InstanceName(), Equals, "pkg_key")
    44  	c.Check(tag.(naming.AppSecurityTag).AppName(), Equals, "app")
    45  
    46  	tag, err = naming.ParseSecurityTag("snap.pkg.hook.configure")
    47  	c.Assert(err, IsNil)
    48  	c.Check(tag.String(), Equals, "snap.pkg.hook.configure")
    49  	c.Check(tag.InstanceName(), Equals, "pkg")
    50  	c.Check(tag.(naming.HookSecurityTag).HookName(), Equals, "configure")
    51  
    52  	tag, err = naming.ParseSecurityTag("snap.pkg_key.hook.configure")
    53  	c.Assert(err, IsNil)
    54  	c.Check(tag.String(), Equals, "snap.pkg_key.hook.configure")
    55  	c.Check(tag.InstanceName(), Equals, "pkg_key")
    56  	c.Check(tag.(naming.HookSecurityTag).HookName(), Equals, "configure")
    57  
    58  	// invalid format is rejected
    59  	_, err = naming.ParseSecurityTag("snap.pkg.app.surprise")
    60  	c.Check(err, ErrorMatches, "invalid security tag")
    61  	_, err = naming.ParseSecurityTag("snap.pkg_key.app.surprise")
    62  	c.Check(err, ErrorMatches, "invalid security tag")
    63  
    64  	// invalid snap and app names are rejected.
    65  	_, err = naming.ParseSecurityTag("snap._.app")
    66  	c.Check(err, ErrorMatches, "invalid security tag")
    67  	_, err = naming.ParseSecurityTag("snap.pkg._")
    68  	c.Check(err, ErrorMatches, "invalid security tag")
    69  
    70  	// invalid number of components are rejected.
    71  	_, err = naming.ParseSecurityTag("snap.pkg.hook.surprise.")
    72  	c.Check(err, ErrorMatches, "invalid security tag")
    73  	_, err = naming.ParseSecurityTag("snap.pkg.hook.")
    74  	c.Check(err, ErrorMatches, "invalid security tag")
    75  	tag, err = naming.ParseSecurityTag("snap.pkg.hook")
    76  	c.Assert(err, IsNil) // Perhaps somewhat unexpectedly, this tag is valid.
    77  	c.Check(tag.(naming.AppSecurityTag).AppName(), Equals, "hook")
    78  	_, err = naming.ParseSecurityTag("snap.pkg.app.surprise")
    79  	c.Check(err, ErrorMatches, "invalid security tag")
    80  	_, err = naming.ParseSecurityTag("snap.pkg.")
    81  	c.Check(err, ErrorMatches, "invalid security tag")
    82  	_, err = naming.ParseSecurityTag("snap.pkg")
    83  	c.Check(err, ErrorMatches, "invalid security tag")
    84  	_, err = naming.ParseSecurityTag("snap.")
    85  	c.Check(err, ErrorMatches, "invalid security tag")
    86  	_, err = naming.ParseSecurityTag("snap")
    87  	c.Check(err, ErrorMatches, "invalid security tag")
    88  
    89  	// things that are not snap.* tags
    90  	_, err = naming.ParseSecurityTag("foo.bar.froz")
    91  	c.Check(err, ErrorMatches, "invalid security tag")
    92  }
    93  
    94  func (s *tagSuite) TestParseAppSecurityTag(c *C) {
    95  	// Invalid security tags cannot be parsed.
    96  	tag, err := naming.ParseAppSecurityTag("potato")
    97  	c.Assert(err, ErrorMatches, "invalid security tag")
    98  	c.Assert(tag, IsNil)
    99  
   100  	// App security tags can be parsed.
   101  	tag, err = naming.ParseAppSecurityTag("snap.pkg.app")
   102  	c.Assert(err, IsNil)
   103  	c.Check(tag.String(), Equals, "snap.pkg.app")
   104  	c.Check(tag.InstanceName(), Equals, "pkg")
   105  	c.Check(tag.AppName(), Equals, "app")
   106  
   107  	// Hook security tags are not app security tags.
   108  	tag, err = naming.ParseAppSecurityTag("snap.pkg.hook.configure")
   109  	c.Assert(err, ErrorMatches, `"snap.pkg.hook.configure" is not an app security tag`)
   110  	c.Assert(tag, IsNil)
   111  }
   112  
   113  func (s *tagSuite) TestParseHookSecurityTag(c *C) {
   114  	// Invalid security tags cannot be parsed.
   115  	tag, err := naming.ParseHookSecurityTag("potato")
   116  	c.Assert(err, ErrorMatches, "invalid security tag")
   117  	c.Assert(tag, IsNil)
   118  
   119  	// Hook security tags can be parsed.
   120  	tag, err = naming.ParseHookSecurityTag("snap.pkg.hook.configure")
   121  	c.Assert(err, IsNil)
   122  	c.Check(tag.String(), Equals, "snap.pkg.hook.configure")
   123  	c.Check(tag.InstanceName(), Equals, "pkg")
   124  	c.Check(tag.HookName(), Equals, "configure")
   125  
   126  	// App security tags are not hook security tags.
   127  	tag, err = naming.ParseHookSecurityTag("snap.pkg.app")
   128  	c.Assert(err, ErrorMatches, `"snap.pkg.app" is not a hook security tag`)
   129  	c.Assert(tag, IsNil)
   130  }