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author | Stanislav Malyshev <stas@php.net> | 2019-03-04 09:17:14 -0800 |
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committer | Stanislav Malyshev <stas@php.net> | 2019-03-04 09:17:14 -0800 |
commit | 2cc1ab81c2e6bbd877bbe3c501edae20d8b2ae98 (patch) | |
tree | 965216b1670d39e920736325ab29629650323c1a | |
parent | 040196972c7a757200c2e1aa88f360322c38ffde (diff) | |
parent | e3133e4db70476fb7adfdedb738483e2255ce0e1 (diff) | |
download | php-git-2cc1ab81c2e6bbd877bbe3c501edae20d8b2ae98.tar.gz |
Merge branch 'PHP-7.1' into PHP-7.2
* PHP-7.1:
Fix bug #77630 - safer rename() procedure
-rw-r--r-- | main/streams/plain_wrapper.c | 53 |
1 files changed, 35 insertions, 18 deletions
diff --git a/main/streams/plain_wrapper.c b/main/streams/plain_wrapper.c index 9b36d00ec8..d409fe99f0 100644 --- a/main/streams/plain_wrapper.c +++ b/main/streams/plain_wrapper.c @@ -1168,34 +1168,51 @@ static int php_plain_files_rename(php_stream_wrapper *wrapper, const char *url_f # ifdef EXDEV if (errno == EXDEV) { zend_stat_t sb; +# if !defined(ZTS) && !defined(TSRM_WIN32) + /* not sure what to do in ZTS case, umask is not thread-safe */ + int oldmask = umask(077); +# endif + int success = 0; if (php_copy_file(url_from, url_to) == SUCCESS) { if (VCWD_STAT(url_from, &sb) == 0) { -# ifndef TSRM_WIN32 - if (VCWD_CHMOD(url_to, sb.st_mode)) { - if (errno == EPERM) { - php_error_docref2(NULL, url_from, url_to, E_WARNING, "%s", strerror(errno)); - VCWD_UNLINK(url_from); - return 1; - } + success = 1; +# if !defined(TSRM_WIN32) + /* + * Try to set user and permission info on the target. + * If we're not root, then some of these may fail. + * We try chown first, to set proper group info, relying + * on the system environment to have proper umask to not allow + * access to the file in the meantime. + */ + if (VCWD_CHOWN(url_to, sb.st_uid, sb.st_gid)) { php_error_docref2(NULL, url_from, url_to, E_WARNING, "%s", strerror(errno)); - return 0; + if (errno != EPERM) { + success = 0; + } } - if (VCWD_CHOWN(url_to, sb.st_uid, sb.st_gid)) { - if (errno == EPERM) { + + if (success) { + if (VCWD_CHMOD(url_to, sb.st_mode)) { php_error_docref2(NULL, url_from, url_to, E_WARNING, "%s", strerror(errno)); - VCWD_UNLINK(url_from); - return 1; + if (errno != EPERM) { + success = 0; + } } - php_error_docref2(NULL, url_from, url_to, E_WARNING, "%s", strerror(errno)); - return 0; } # endif - VCWD_UNLINK(url_from); - return 1; + if (success) { + VCWD_UNLINK(url_from); + } + } else { + php_error_docref2(NULL, url_from, url_to, E_WARNING, "%s", strerror(errno)); } + } else { + php_error_docref2(NULL, url_from, url_to, E_WARNING, "%s", strerror(errno)); } - php_error_docref2(NULL, url_from, url_to, E_WARNING, "%s", strerror(errno)); - return 0; +# if !defined(ZTS) && !defined(TSRM_WIN32) + umask(oldmask); +# endif + return success; } # endif #endif |