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Dir : //proc/self/root/opt/saltstack/salt/lib/python3.10/site-packages/salt/utils/sdb.py

"""
Basic functions for accessing the SDB interface

For configuration options, see the docs for specific sdb
modules.
"""

import random

import salt.loader
from salt.exceptions import SaltInvocationError


def sdb_get(uri, opts, utils=None, strict=False):
    """
    Get a value from a db, using a uri in the form of ``sdb://<profile>/<key>``. If
    the uri provided is not valid, then it will be returned as-is, unless ``strict=True`` was passed.
    """
    if not isinstance(uri, str) or not uri.startswith("sdb://"):
        if strict:
            raise SaltInvocationError('SDB uri must start with "sdb://"')
        else:
            return uri

    if utils is None:
        utils = salt.loader.utils(opts)

    sdlen = len("sdb://")
    indx = uri.find("/", sdlen)

    if (indx == -1) or not uri[(indx + 1) :]:
        if strict:
            raise SaltInvocationError(
                "SDB uri must have a profile name as a first part of the uri before"
                " the /"
            )
        else:
            return uri

    profile = opts.get(uri[sdlen:indx], {})
    if not profile:
        profile = opts.get("pillar", {}).get(uri[sdlen:indx], {})
    if "driver" not in profile:
        if strict:
            raise SaltInvocationError(
                'SDB profile "{}" wasnt found in the minion configuration'.format(
                    uri[sdlen:indx]
                )
            )
        else:
            return uri

    fun = "{}.get".format(profile["driver"])
    query = uri[indx + 1 :]

    loaded_db = salt.loader.sdb(opts, fun, utils=utils)
    return loaded_db[fun](query, profile=profile)


def sdb_set(uri, value, opts, utils=None):
    """
    Set a value in a db, using a uri in the form of ``sdb://<profile>/<key>``.
    If the uri provided does not start with ``sdb://`` or the value is not
    successfully set, return ``False``.
    """
    if not isinstance(uri, str) or not uri.startswith("sdb://"):
        return False

    if utils is None:
        utils = salt.loader.utils(opts)

    sdlen = len("sdb://")
    indx = uri.find("/", sdlen)

    if (indx == -1) or not uri[(indx + 1) :]:
        return False

    profile = opts.get(uri[sdlen:indx], {})
    if not profile:
        profile = opts.get("pillar", {}).get(uri[sdlen:indx], {})
    if "driver" not in profile:
        return False

    fun = "{}.set".format(profile["driver"])
    query = uri[indx + 1 :]

    loaded_db = salt.loader.sdb(opts, fun, utils=utils)
    return loaded_db[fun](query, value, profile=profile)


def sdb_delete(uri, opts, utils=None):
    """
    Delete a value from a db, using a uri in the form of ``sdb://<profile>/<key>``. If
    the uri provided does not start with ``sdb://`` or the value is not successfully
    deleted, return ``False``.
    """
    if not isinstance(uri, str) or not uri.startswith("sdb://"):
        return False

    if utils is None:
        utils = salt.loader.utils(opts)

    sdlen = len("sdb://")
    indx = uri.find("/", sdlen)

    if (indx == -1) or not uri[(indx + 1) :]:
        return False

    profile = opts.get(uri[sdlen:indx], {})
    if not profile:
        profile = opts.get("pillar", {}).get(uri[sdlen:indx], {})
    if "driver" not in profile:
        return False

    fun = "{}.delete".format(profile["driver"])
    query = uri[indx + 1 :]

    loaded_db = salt.loader.sdb(opts, fun, utils=utils)
    return loaded_db[fun](query, profile=profile)


def sdb_get_or_set_hash(
    uri,
    opts,
    length=8,
    chars="abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)",
    utils=None,
):
    """
    Check if value exists in sdb.  If it does, return, otherwise generate a
    random string and store it.  This can be used for storing secrets in a
    centralized place.
    """
    if not isinstance(uri, str) or not uri.startswith("sdb://"):
        return False

    if utils is None:
        utils = salt.loader.utils(opts)

    ret = sdb_get(uri, opts, utils=utils)

    if ret is None:
        val = "".join([random.SystemRandom().choice(chars) for _ in range(length)])
        sdb_set(uri, val, opts, utils)

    return ret or val