|
| 1 | +importre |
| 2 | + |
| 3 | +importshutil |
| 4 | +importsys |
| 5 | +frompathlibimportPath |
| 6 | + |
| 7 | +fromtqdmimporttqdm |
| 8 | + |
| 9 | +from ..importcore |
| 10 | + |
| 11 | + |
| 12 | +CHOWN_PATTERN=re.compile("^([^:]+)?(:([^:]+))?$") |
| 13 | + |
| 14 | +parser=core.create_parser( |
| 15 | +usage=( |
| 16 | +"%prog [OPTION]... [USER][:[GROUP]] FILE...", |
| 17 | +"%prog [OPTION]... --reference=RFILE FILE...", |
| 18 | + ), |
| 19 | +description="Change the user and/or group ownership of each FILE.", |
| 20 | +) |
| 21 | + |
| 22 | +parser.add_option( |
| 23 | +"-f", |
| 24 | +"--silent", |
| 25 | +"--quiet", |
| 26 | +dest="verbosity", |
| 27 | +action="store_const", |
| 28 | +const=0, |
| 29 | +default=1, |
| 30 | +help="suppress most error messages", |
| 31 | +) |
| 32 | +parser.add_option( |
| 33 | +"-c", |
| 34 | +"--changes", |
| 35 | +dest="verbosity", |
| 36 | +action="store_const", |
| 37 | +const=2, |
| 38 | +help="report only when changes are made", |
| 39 | +) |
| 40 | +parser.add_option( |
| 41 | +"-v", |
| 42 | +"--verbose", |
| 43 | +dest="verbosity", |
| 44 | +action="store_const", |
| 45 | +const=3, |
| 46 | +help="print a diagnostic for each file", |
| 47 | +) |
| 48 | + |
| 49 | +parser.add_option( |
| 50 | +"--progress", |
| 51 | +dest="progress", |
| 52 | +action="store_true", |
| 53 | +help="show a progress bar when changing groups", |
| 54 | +) |
| 55 | +parser.add_option( |
| 56 | +"--no-progress", |
| 57 | +dest="progress", |
| 58 | +action="store_false", |
| 59 | +default=False, |
| 60 | +help="do not show a progress bar (default)", |
| 61 | +) |
| 62 | + |
| 63 | +parser.add_option( |
| 64 | +"--dereference", |
| 65 | +action="store_true", |
| 66 | +default=True, |
| 67 | +help="affect symlink referents instead of the symlinks themselves (default)", |
| 68 | +) |
| 69 | +parser.add_option( |
| 70 | +"-h", |
| 71 | +"--no-dereference", |
| 72 | +dest="dereference", |
| 73 | +action="store_false", |
| 74 | +help="opposite of --dereference", |
| 75 | +) |
| 76 | + |
| 77 | +parser.add_option( |
| 78 | +"--no-preserve-root", |
| 79 | +dest="preserve_root", |
| 80 | +action="store_false", |
| 81 | +default=False, |
| 82 | +help="do not treat '/' specially (default)", |
| 83 | +) |
| 84 | +parser.add_option( |
| 85 | +"--preserve-root", |
| 86 | +dest="preserve_root", |
| 87 | +action="store_true", |
| 88 | +help="fail to operate recursively on '/'", |
| 89 | +) |
| 90 | + |
| 91 | +parser.add_option( |
| 92 | +"--from", |
| 93 | +dest="from_spec",# prevent name collision with the `from` keyword |
| 94 | +metavar="[CURRENT_OWNER][:[CURRENT_GROUP]]", |
| 95 | +help="only affect files with CURRENT_OWNER and CURRENT_GROUP" |
| 96 | +" (either is optional and only checked if given)", |
| 97 | +) |
| 98 | + |
| 99 | +parser.add_option("--reference",metavar="RFILE") |
| 100 | + |
| 101 | +parser.add_option( |
| 102 | +"-R","--recursive",action="store_true",help="operate on directories recursively" |
| 103 | +) |
| 104 | +parser.add_option( |
| 105 | +"-H", |
| 106 | +dest="recurse_mode", |
| 107 | +action="store_const", |
| 108 | +const="H", |
| 109 | +help="traverse directory symlinks only if they were given as command line arguments", |
| 110 | +) |
| 111 | +parser.add_option( |
| 112 | +"-L", |
| 113 | +dest="recurse_mode", |
| 114 | +action="store_const", |
| 115 | +const="L", |
| 116 | +help="traverse all directory symlinks encountered", |
| 117 | +) |
| 118 | +parser.add_option( |
| 119 | +"-P", |
| 120 | +dest="recurse_mode", |
| 121 | +action="store_const", |
| 122 | +const="P", |
| 123 | +default="P", |
| 124 | +help="do not traverse any symlinks (default)", |
| 125 | +) |
| 126 | + |
| 127 | + |
| 128 | +@core.command(parser) |
| 129 | +defpython_userland_chown(opts,args): |
| 130 | +ifnotargs: |
| 131 | +parser.error("missing operand") |
| 132 | + |
| 133 | +from_uid:int|None=None |
| 134 | +from_gid:int|None=None |
| 135 | + |
| 136 | +ifopts.from_spec: |
| 137 | +from_uid,from_gid=core.parse_onwer_spec(parser,opts.from_spec) |
| 138 | + |
| 139 | +chown_args= {"follow_symlinks":opts.dereference} |
| 140 | + |
| 141 | +ifopts.reference: |
| 142 | +try: |
| 143 | +ref_stat=Path(opts.reference).stat(follow_symlinks=True) |
| 144 | +exceptOSErrorase: |
| 145 | +print(e,file=sys.stderr) |
| 146 | +return1 |
| 147 | + |
| 148 | +chown_args["user"]=ref_stat.st_uid |
| 149 | +chown_args["group"]=ref_stat.st_gid |
| 150 | +else: |
| 151 | +owner_spec=args.pop(0) |
| 152 | + |
| 153 | +ifnotargs: |
| 154 | +parser.error(f"missing operand after '{owner_spec}'") |
| 155 | + |
| 156 | +ifnot (owner_match:=CHOWN_PATTERN.match(owner_spec)): |
| 157 | +parser.error(f"invalid owner spec:{owner_spec}") |
| 158 | + |
| 159 | +chown_args["user"]= ( |
| 160 | +core.parse_user(parser,owner_match.group(1)) |
| 161 | +ifowner_match.group(1) |
| 162 | +elseNone |
| 163 | + ) |
| 164 | +chown_args["group"]= ( |
| 165 | +core.parse_group(parser,owner_match.group(3)) |
| 166 | +ifowner_match.group(3) |
| 167 | +elseNone |
| 168 | + ) |
| 169 | + |
| 170 | +failed=False |
| 171 | + |
| 172 | +forfileincore.traverse_files( |
| 173 | + (tqdm(args,ascii=True,desc="Changing ownership")ifopts.progresselseargs), |
| 174 | +recurse_mode=opts.recurse_modeifopts.recursiveelseNone, |
| 175 | +preserve_root=opts.preserve_root, |
| 176 | + ): |
| 177 | +ifnotfile: |
| 178 | +failed=True |
| 179 | +continue |
| 180 | + |
| 181 | +try: |
| 182 | +stat=file.stat(follow_symlinks=opts.dereference) |
| 183 | +prev_uid=stat.st_uid |
| 184 | +prev_gid=stat.st_gid |
| 185 | +exceptOSErrorase: |
| 186 | +failed=True |
| 187 | +print(e,file=sys.stderr) |
| 188 | +print( |
| 189 | +f"failed to change ownership of '{file}' to{owner_spec}", |
| 190 | +file=sys.stderr, |
| 191 | + ) |
| 192 | +continue |
| 193 | + |
| 194 | +prev_uname=core.user_display_name_from_id(prev_uid) |
| 195 | +prev_gname=core.group_display_name_from_id(prev_gid) |
| 196 | + |
| 197 | +if (from_uidisnotNoneandprev_uid!=from_uid)or ( |
| 198 | +from_gidisnotNoneandprev_gid!=from_gid |
| 199 | + ): |
| 200 | +ifopts.verbosity>2: |
| 201 | +print(f"ownership of '{file}' retained as{prev_uname}:{prev_gname}") |
| 202 | +continue |
| 203 | + |
| 204 | +try: |
| 205 | +shutil.chown(file,**chown_args) |
| 206 | +exceptOSErrorase: |
| 207 | +failed=True |
| 208 | +ifopts.verbosity: |
| 209 | +print(e,file=sys.stderr) |
| 210 | +print( |
| 211 | +f"failed to change ownership of '{file}' to{owner_spec}", |
| 212 | +file=sys.stderr, |
| 213 | + ) |
| 214 | +continue |
| 215 | + |
| 216 | +ifprev_uid==chown_args["user"]orprev_gid==chown_args["group"]: |
| 217 | +ifopts.verbosity>2: |
| 218 | +print(f"ownership of '{file}' retained as{prev_uname}:{prev_gname}") |
| 219 | +elifopts.verbosity>1: |
| 220 | +print( |
| 221 | +f"changed ownership of '{file}' from" |
| 222 | +f"{prev_uname}:{prev_gname} to{owner_spec}" |
| 223 | + ) |
| 224 | + |
| 225 | +returnint(failed) |