{"id":6627,"date":"2021-11-28T23:42:58","date_gmt":"2021-11-28T14:42:58","guid":{"rendered":"https:\/\/hdmr.org\/d\/?p=6627"},"modified":"2021-11-29T00:08:51","modified_gmt":"2021-11-28T15:08:51","slug":"wp-6627","status":"publish","type":"post","link":"https:\/\/hdmr.org\/d\/wp-6627","title":{"rendered":"PHP\u304b\u3089PAM\u3092\u4f7f\u3063\u3066\u3044\u3044\u306e\u304b!?"},"content":{"rendered":"

\u6700\u8fd1\u3001\u3053\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u5c11\u3057\u624b\u3092\u5165\u308c\u3066\u3044\u3066\u3001<\/p>\n

\u305d\u306e\u4e2d\u3067\u30e6\u30fc\u30b6\u30fc\u8a8d\u8a3c\u3068\u3057\u3066SSH\u540c\u69d8\u306eTOTP+\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u4f7f\u3044\u305f\u3044\u3068\u601d\u3063\u305f\u3002<\/p>\n

\u30ef\u30f3\u30bf\u30a4\u30e0\u30d1\u30b9\u30ef\u30fc\u30c9\u3068\u306e2\u8981\u7d20\u8a8d\u8a3c<\/a><\/p>\n

\u3057\u304b\u3057\u3001\u3053\u308c\u3092\u3084\u308b\u4e0a\u3067\u306f\u3044\u304f\u3064\u304b\u554f\u984c\u304c\u3042\u3063\u3066\u3001\u307e\u305a1\u3064\u304croot\u6a29\u9650\u304c\u5fc5\u8981\u306a\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n

\n

PHP\u306bPAM\u3063\u3066\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u3042\u308b\u3093\u3067\u3059\u3088\u306d\u3002<\/p>\n

Package :: PAM (PECL)<\/a><\/p>\n

\u3067\u3001\u4ee5\u524d\u3053\u308c\u3092\u4f7f\u3063\u3066\u3044\u305f\u6642\u671f\u304c\u3042\u308b\u3093\u3067\u3059\u304c\u3001\u5927\u554f\u984c\u304c\u3042\u3063\u3066\u3001<\/p>\n

\u305d\u308c\u306f\u3053\u308c\u3092\u52d5\u304b\u3059\u30e6\u30fc\u30b6\u30fc\u306f\/etc\/shadow\u306b\u30a2\u30af\u30bb\u30b9\u51fa\u6765\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n

\/etc\/shadow\u3068\u306f\u6697\u53f7\u5316\u3055\u308c\u305f\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u30d5\u30a1\u30a4\u30eb\u3067\u3001\u901a\u5e38\u306froot\u30e6\u30fc\u30b6\u30fc\u3057\u304b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u3002<\/p>\n

\u307e\u3060\u3046\u3061\u306e\u74b0\u5883\u306fphp-cgi\u3060\u304b\u3089\u3001apache\u30e6\u30fc\u30b6\u30fc\u306b\/etc\/shadow\u3092\u898b\u305b\u3089\u308c\u308b\u3088\u3046\u306b\u3057\u308d\u3068\u304b\u3001\u305d\u3053\u307e\u3067\u3067\u306f\u306a\u3044\u304c\u3002<\/p>\n

\u3053\u308c\u3068\u540c\u3058\u7406\u5c48\u3067\u8a00\u3048\u3070TOTP\u306f\u3055\u3089\u306b\u554f\u984c\u3067\u3042\u308b\u3002<\/p>\n

\u5404\u30e6\u30fc\u30b6\u30fc\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u4e0a\u306e.google_authenticator\u30d5\u30a1\u30a4\u30eb\u3092\u8a60\u307e\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u304b\u3089\u3060\u3002<\/p>\n

\n

\u3053\u3053\u304c1\u3064\u306e\u554f\u984c\u3060\u3068\u601d\u3063\u3066\u3044\u305f\u304c\u3001sudo\u3092\u4f7f\u3048\u3070\u6253\u958b\u3067\u304d\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u305f\u3002<\/p>\n

sudo\u3068\u304bsu -\u306e\u5b9f\u884c\u3050\u3089\u3044\u3057\u304b\u4f7f\u3063\u3066\u3044\u306a\u3044\u304c\u3001\u3082\u3063\u3068\u591a\u69d8\u306a\u4f7f\u3044\u65b9\u304c\u3067\u304d\u3066\u3001<\/p>\n

\u7279\u5b9a\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u7279\u5b9a\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5229\u7528\u3055\u305b\u308b\u3068\u3044\u3046\u3053\u3068\u3082\u3067\u304d\u308b\u3002<\/p>\n

visudo\u3067\/etc\/sudoer\u3092\u7de8\u96c6\u3057\u3066\u3001<\/p>\n

hoge ALL=NOPASSWD:\/home\/hoge\/bin\/pamtest<\/pre>\n
\u307f\u305f\u3044\u306b\u3059\u308c\u3070\u3001\u3053\u306e\u30b3\u30de\u30f3\u30c9\u306fhoge\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3057\u3067root\u6a29\u9650\u3067\u5b9f\u884c\u3067\u304d\u308b\u3002<\/p>\n
\u3053\u306e\u30b3\u30de\u30f3\u30c9\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5165\u529b\u3057\u3066\u7167\u5408\u7d50\u679c\u3092\u4f1d\u9054\u3059\u308b\u5f62\u306a\u3089\u3070\u3001\u5b89\u5168\u3067\u3057\u3087\u3046\u3002<\/p>\n
\n
\u3042\u3068\u306fPAM\u3092\u4f7f\u3063\u3066\u30d1\u30b9\u30ef\u30fc\u30c9\u7167\u5408\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u304c\u3001\u3053\u308c\u306f\u30b5\u30f3\u30d7\u30eb\u3092\u898b\u306a\u304c\u3089C\u3067\u66f8\u3044\u305f\u3002<\/p>\n
\u3042\u3093\u307e\u308a\u3060\u3068\u306f\u601d\u3046\u306e\u3067\u3059\u304c\u3001\u4ed6\u306b\u3042\u307e\u308a\u4f8b\u304c\u306a\u3044\u306e\u3067\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u3066\u304a\u304f\u3002<\/p>\n\n\n
pamtest.c<\/a>\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/a><\/div>\n\n\n
\u69cb\u9020\u304c\u3088\u304f\u7406\u89e3\u3067\u304d\u306a\u304b\u3063\u305f\u306e\u3060\u304c\u3001pam_start\u95a2\u6570\u306b\u306f\u3001<\/p>\n
\u30b5\u30fc\u30d3\u30b9\u540d(\/etc\/pam.d\/[\u30b5\u30fc\u30d3\u30b9\u540d]\u306b\u5f93\u3063\u3066\u8a8d\u8a3c\u3092\u3059\u308b)\u30fb\u30e6\u30fc\u30b6\u30fc\u540d\u3068pam_conv\u3068\u3044\u3046\u69cb\u9020\u4f53\u3092\u6e21\u3059\u3002<\/p>\n
\u3053\u306epam_conv\u3068\u3044\u3046\u69cb\u9020\u4f53\u306b\u306f\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3068appdata_ptr\u3068\u3044\u3046\u30dd\u30a4\u30f3\u30bf\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/p>\n
\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u306e\u610f\u5473\u304c\u308f\u304b\u3089\u306a\u304b\u3063\u305f\u306e\u3060\u304c\u3001\u3053\u308c\u306f\u30d1\u30b9\u30ef\u30fc\u30c9\u5165\u529b\u8981\u6c42\u306e\u95a2\u6570\u3067\u3042\u308b\u3002<\/p>\n
\u3053\u306e\u95a2\u6570\u306b\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u500b\u6570\u3092\u8868\u3059\u5909\u6570\u3068\u3001pam_message\u69cb\u9020\u4f53\u3068pam_response\u69cb\u9020\u4f53\u306e\u4e8c\u91cd\u30dd\u30a4\u30f3\u30bf\u3068\u3001\u3055\u3063\u304d\u6307\u5b9a\u3057\u305fappdata_ptr\u3092\u53d7\u3051\u53d6\u308b\u30dd\u30a4\u30f3\u30bf\u304c\u5f15\u6570\u3068\u3057\u3066\u5165\u529b\u3055\u308c\u308b\u3002<\/p>\n
\u4e8c\u91cd\u30dd\u30a4\u30f3\u30bf\u3063\u3066\u306a\u3093\u305e\u3068\u601d\u3063\u305f\u3089\u3001pam_response\u306b\u306f\u81ea\u5206\u3067calloc\u3068\u304b\u3067\u78ba\u4fdd\u3057\u305f\u30dd\u30a4\u30f3\u30bf\u3092\u5165\u308c\u308b\u3093\u3067\u3059\u3063\u3066\u3002<\/p>\n
\u305d\u308c\u3067\u3001\u305d\u306e\u69cb\u9020\u4f53\u306eresp\u306e\u6587\u5b57\u5217\u30dd\u30a4\u30f3\u30bf\u306b\u3082\u81ea\u5206\u3067calloc\u3067\u78ba\u4fdd\u3057\u305f\u30dd\u30a4\u30f3\u30bf\u3092\u5165\u308c\u308b\u3093\u3067\u3059\u3063\u3066\u3002<\/p>\n
free\u3059\u308b\u306e\u306fPAM\u306e\u65b9\u3067\u3084\u3063\u3066\u304f\u308c\u308b\u3089\u3057\u3044\u3002\u6700\u521d\u610f\u5473\u304c\u308f\u304b\u3089\u306a\u304b\u3063\u305f\u3002<\/p>\n
\u7d50\u679c\u7684\u306b\u306f\u6a19\u6e96\u5165\u529b\u304b\u3089\u53d7\u3051\u53d6\u3063\u305f\u3082\u306e\u3092\u78ba\u4fdd\u3057\u305f\u30e1\u30e2\u30ea\u4e0a\u306b\u6295\u3052\u8fbc\u3093\u3067\u308b\u3060\u3051\u3067\u3042\u308b\u3002<\/p>\n
\u6700\u5f8c\u306b\u5224\u5b9a\u7d50\u679c\u3092 RESULT:SUCCESS: \u306e\u3088\u3046\u306b\u51fa\u529b\u3057\u3066\u3001\u3053\u308c\u3092\u898b\u3066\u5224\u5b9a\u7d50\u679c\u3068\u3059\u308b\u3068\u3002<\/p>\n
\u30b3\u30f3\u30d1\u30a4\u30eb\u306f\u3053\u3093\u306a\u611f\u3058\u3067\u3084\u308b\u3002-lpam\u3067PAM\u3068\u30ea\u30f3\u30af\u3055\u308c\u308b\u3068\u3002<\/p>\n
$ gcc pamtest.c -o pamtest -lpam<\/pre>\n
\n
\u3042\u3068\u306fPHP\u304b\u3089\u3053\u306e\u30b3\u30de\u30f3\u30c9\u3092sudo\u4ed8\u304d\u3067\u5b9f\u884c\u3059\u308c\u3070OK\u3068\u3002<\/p>\n
proc_open (PHP)<\/a><\/p>\n
\u6a19\u6e96\u5165\u51fa\u529b\u3067\u30d1\u30b9\u30ef\u30fc\u30c9\u30fb\u8a8d\u8a3c\u7d50\u679c\u306e\u3084\u308a\u3068\u308a\u3092\u3059\u308b\u3053\u3068\u306b\u3057\u305f\u306e\u3067\u3053\u308c\u3067\u3002<\/p>\n
\u7d50\u679c\u3092\u898b\u3066SUCCESS\u306a\u3089\u51e6\u7406\u3092\u9032\u3081\u3066\u3001\u9055\u3048\u3070\u51e6\u7406\u3092\u6b62\u3081\u308b\u3068\u3002<\/p>\n
TOTP\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u4e00\u81f4\u3059\u308b\u3068\u901a\u308a\u3001\u3069\u3061\u3089\u304b\u5408\u308f\u306a\u3044\u3068NG\u3068\u306a\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3084\u308a\u305f\u3044\u3053\u3068\u306f\u5b9f\u73fe\u3067\u304d\u305f\u3002<\/p>\n
\n
\u3042\u3048\u3066Linux\u306e\u30ed\u30b0\u30a4\u30f3\u60c5\u5831\u3092Web\u306e\u8a8d\u8a3c\u624b\u6bb5\u306b\u4f7f\u3046\u7406\u7531\u306f\u3042\u307e\u308a\u306a\u3044\u3068\u601d\u3046\u304c\u3001<\/p>\n
\u3068\u3042\u308b\u4e8b\u60c5\u306b\u3088\u308a\u3053\u3046\u3044\u3046\u5f62\u306b\u3057\u305f\u304b\u3063\u305f\u3068\u3053\u308d\u304c\u3042\u308b\u3002<\/p>\n
(\u4e00\u822c\u306e\u4eba\u304c\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3053\u308d\u3067\u306f\u306a\u3044\u3068\u3053\u308d\u3067\u4f7f\u3063\u3066\u3044\u308b)<\/p>\n
root\u6a29\u9650\u304c\u5fc5\u8981\u306a\u306e\u306f\u4e8b\u5b9f\u3060\u304c\u3001\u3053\u308c\u306a\u3089\u6bd4\u8f03\u7684\u62b5\u6297\u611f\u306f\u4f4e\u3044\u304b\u306a\u3002<\/p>\n
SSH\u9375\u306e\u6301\u3061\u5408\u308f\u305b\u304c\u7121\u3044\u3068\u304d\u306eSSH\u30a2\u30af\u30bb\u30b9\u624b\u6bb5\u3068\u3044\u3046\u3001<\/p>\n
\u975e\u5e38\u306b\u5fae\u5999\u306a\u7528\u9014\u3067\u3057\u304b\u4f7f\u3063\u3066\u306a\u304b\u3063\u305fTOTP\u306b\u65b0\u3057\u3044\u7528\u9014\u304c\u3067\u304d\u305f\u306e\u306f\u3088\u304b\u3063\u305f\u304b\u306a\u3002<\/p>\n
\u305d\u306e\u305f\u3081\u306b\u3053\u3093\u306a\u3053\u3068\u3092\u3084\u308b\u306e\u304b? \u3068\u3044\u3046\u8a71\u306f\u3042\u308b\u304c\u3002<\/p>","protected":false},"excerpt":{"rendered":"
\u6700\u8fd1\u3001\u3053\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u5c11\u3057\u624b\u3092\u5165\u308c\u3066\u3044\u3066\u3001 \u305d\u306e\u4e2d\u3067\u30e6\u30fc\u30b6\u30fc\u8a8d\u8a3c\u3068\u3057\u3066SSH\u540c\u69d8\u306eTOTP+\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u4f7f\u3044\u305f\u3044\u3068\u601d\u3063\u305f\u3002 \u30ef\u30f3\u30bf\u30a4\u30e0\u30d1\u30b9\u30ef\u30fc\u30c9\u3068\u306e2\u8981\u7d20\u8a8d\u8a3c \u3057\u304b\u3057\u3001\u3053\u308c\u3092\u3084\u308b\u4e0a\u3067\u306f\u3044\u304f\u3064\u304b\u554f\u984c\u304c\u3042\u3063\u3066\u3001\u307e\u305a1\u3064\u304croo […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-6627","post","type-post","status-publish","format-standard","hentry","category-computer"],"_links":{"self":[{"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=\/wp\/v2\/posts\/6627","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6627"}],"version-history":[{"count":4,"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=\/wp\/v2\/posts\/6627\/revisions"}],"predecessor-version":[{"id":6632,"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=\/wp\/v2\/posts\/6627\/revisions\/6632"}],"wp:attachment":[{"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hdmr.org\/d\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}