112 lines
3.5 KiB
Python
112 lines
3.5 KiB
Python
#!/usr/bin/python -tt
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# (c) 2012, Luis Alberto Perez Lazaro <luisperlazaro@gmail.com>
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#
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# This module is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This software is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this software. If not, see <http://www.gnu.org/licenses/>.
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#
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DOCUMENTATION = '''
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---
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module: patch
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author: Luis Alberto Perez Lazaro
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version_added: 0.9
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short_description: apply patch files
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description:
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- Apply patch files using the GNU patch tool. Before using this module make sure the patch tool is installed.
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options:
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patchfile:
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required: true
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description:
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- A patch file as accepted by the gnu patch tool
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strip:
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required: true
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aliases: [ p ]
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description:
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- Number that indicates the smallest prefix containing leading slashes that
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will be stripped from each file name found in the patch file. For more information
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see the strip parameter of the gnu patch tool.
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basedir:
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required: true
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description:
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- base directory in which the patch file will be applied
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examples:
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- code: "patch: patchfile=/tmp/critical.patch strip=1 basedir=/usr/share/pyshared/paramiko"
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description: Example git checkout from Ansible Playbooks
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'''
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def _run(args):
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cmd = subprocess.Popen(args, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = cmd.communicate()
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rc = cmd.returncode
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return (rc, out, err)
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def _is_already_applied(patch_file, strip):
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reverse_cmd = "patch -s -R -N -p%s --dry-run < %s" % (strip, patch_file)
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(rc, _, _) = _run(reverse_cmd)
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return rc == 0
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def _apply_patch(module, patch_file, strip):
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patch_cmd = "patch -s -N -t -r - -p%s < %s" % (strip, patch_file)
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(rc, out, err) = _run(patch_cmd)
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if rc != 0:
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msg = out if not err else err
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module.fail_json(msg=msg)
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def _get_params(module):
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patchfile = os.path.expanduser(module.params['patchfile'])
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strip = module.params['strip']
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basedir = module.params['basedir']
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if basedir:
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os.chdir(os.path.expanduser(basedir))
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if not os.path.exists(patchfile):
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module.fail_json(msg="patchfile %s doesn't exist" % (patchfile))
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if not os.access(patchfile, os.R_OK):
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module.fail_json(msg="patchfile %s not readable" % (patchfile))
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if not os.path.exists(basedir):
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module.fail_json(msg="basedir %s doesn't exist" % (patchfile))
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try:
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strip = int(strip)
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except Exception:
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module.fail_json(msg="p must be a number")
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return patchfile, strip, basedir
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# ===========================================
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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patchfile=dict(required=True),
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basedir=dict(),
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strip=dict(default=0, aliases=['p'])
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),
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)
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patchfile, strip, basedir = _get_params(module)
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changed = False
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if not _is_already_applied(patchfile, strip):
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_apply_patch(module, patchfile, strip)
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changed = True
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module.exit_json(changed=changed)
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# include magic from lib/ansible/module_common.py
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#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
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main()
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