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2e5ac355b9
php-src/ext/phar/func_interceptors.c
Anatol Belski 2e5ac355b9 Move to unsigned types in phar 
Preventing integer overflows in principle, which allows to avoid additional
range checks. The phar format is based on 32-bit lengths, so the storage
sizes was kept same.
2018-04-18 20:15:05 +02:00

1170 lines
36 KiB
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/*
+----------------------------------------------------------------------+
| phar php single-file executable PHP extension |
+----------------------------------------------------------------------+
| Copyright (c) 2005-2018 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Gregory Beaver <cellog@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "phar_internal.h"
#define PHAR_FUNC(name) \
static PHP_NAMED_FUNCTION(name)
PHAR_FUNC(phar_opendir) /* {{{ */
{
char *filename;
size_t filename_len;
zval *zcontext = NULL;
if (!PHAR_G(intercepted)) {
goto skip_phar;
}
if ((HT_FLAGS(&PHAR_G(phar_fname_map)) && !zend_hash_num_elements(&(PHAR_G(phar_fname_map))))
&& !HT_FLAGS(&cached_phars)) {
goto skip_phar;
}
if (zend_parse_parameters(ZEND_NUM_ARGS(), "p|z", &filename, &filename_len, &zcontext) == FAILURE) {
return;
}
if (!IS_ABSOLUTE_PATH(filename, filename_len) && !strstr(filename, "://")) {
char *arch, *entry, *fname;
size_t arch_len, entry_len, fname_len;
fname = (char*)zend_get_executed_filename();
/* we are checking for existence of a file within the relative path. Chances are good that this is
retrieving something from within the phar archive */
if (strncasecmp(fname, "phar://", 7)) {
goto skip_phar;
}
fname_len = strlen(fname);
if (SUCCESS == phar_split_fname(fname, fname_len, &arch, &arch_len, &entry, &entry_len, 2, 0)) {
php_stream_context *context = NULL;
php_stream *stream;
char *name;
efree(entry);
entry = estrndup(filename, filename_len);
/* fopen within phar, if :// is not in the url, then prepend phar://<archive>/ */
entry_len = filename_len;
/* retrieving a file within the current directory, so use this if possible */
entry = phar_fix_filepath(entry, &entry_len, 1);
if (entry[0] == '/') {
spprintf(&name, 4096, "phar://%s%s", arch, entry);
} else {
spprintf(&name, 4096, "phar://%s/%s", arch, entry);
}
efree(entry);
efree(arch);
if (zcontext) {
context = php_stream_context_from_zval(zcontext, 0);
}
stream = php_stream_opendir(name, REPORT_ERRORS, context);
efree(name);
if (!stream) {
RETURN_FALSE;
}
php_stream_to_zval(stream, return_value);
return;
}
}
skip_phar:
PHAR_G(orig_opendir)(INTERNAL_FUNCTION_PARAM_PASSTHRU);
return;
}
/* }}} */
PHAR_FUNC(phar_file_get_contents) /* {{{ */
{
char *filename;
size_t filename_len;
zend_string *contents;
zend_bool use_include_path = 0;
php_stream *stream;
zend_long offset = -1;
zend_long maxlen = PHP_STREAM_COPY_ALL;
zval *zcontext = NULL;
if (!PHAR_G(intercepted)) {
goto skip_phar;
}
if ((HT_FLAGS(&PHAR_G(phar_fname_map)) && !zend_hash_num_elements(&(PHAR_G(phar_fname_map))))
&& !HT_FLAGS(&cached_phars)) {
goto skip_phar;
}
/* Parse arguments */
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(), "p|br!ll", &filename, &filename_len, &use_include_path, &zcontext, &offset, &maxlen) == FAILURE) {
goto skip_phar;
}
if (use_include_path || (!IS_ABSOLUTE_PATH(filename, filename_len) && !strstr(filename, "://"))) {
char *arch, *entry, *fname;
zend_string *entry_str = NULL;
size_t arch_len, entry_len, fname_len;
php_stream_context *context = NULL;
fname = (char*)zend_get_executed_filename();
if (strncasecmp(fname, "phar://", 7)) {
goto skip_phar;
}
fname_len = strlen(fname);
if (SUCCESS == phar_split_fname(fname, fname_len, &arch, &arch_len, &entry, &entry_len, 2, 0)) {
char *name;
phar_archive_data *phar;
efree(entry);
entry = filename;
/* fopen within phar, if :// is not in the url, then prepend phar://<archive>/ */
entry_len = filename_len;
if (ZEND_NUM_ARGS() == 5 && maxlen < 0) {
efree(arch);
php_error_docref(NULL, E_WARNING, "length must be greater than or equal to zero");
RETURN_FALSE;
}
/* retrieving a file defaults to within the current directory, so use this if possible */
if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL)) {
efree(arch);
goto skip_phar;
}
if (use_include_path) {
if ((entry_str = phar_find_in_include_path(entry, entry_len, NULL))) {
name = ZSTR_VAL(entry_str);
goto phar_it;
} else {
/* this file is not in the phar, use the original path */
efree(arch);
goto skip_phar;
}
} else {
entry = phar_fix_filepath(estrndup(entry, entry_len), &entry_len, 1);
if (entry[0] == '/') {
if (!zend_hash_str_exists(&(phar->manifest), entry + 1, entry_len - 1)) {
/* this file is not in the phar, use the original path */
notfound:
efree(arch);
efree(entry);
goto skip_phar;
}
} else {
if (!zend_hash_str_exists(&(phar->manifest), entry, entry_len)) {
goto notfound;
}
}
/* auto-convert to phar:// */
if (entry[0] == '/') {
spprintf(&name, 4096, "phar://%s%s", arch, entry);
} else {
spprintf(&name, 4096, "phar://%s/%s", arch, entry);
}
if (entry != filename) {
efree(entry);
}
}
phar_it:
efree(arch);
if (zcontext) {
context = php_stream_context_from_zval(zcontext, 0);
}
stream = php_stream_open_wrapper_ex(name, "rb", 0 | REPORT_ERRORS, NULL, context);
if (entry_str) {
zend_string_release(entry_str);
} else {
efree(name);
}
if (!stream) {
RETURN_FALSE;
}
if (offset > 0 && php_stream_seek(stream, offset, SEEK_SET) < 0) {
php_error_docref(NULL, E_WARNING, "Failed to seek to position " ZEND_LONG_FMT " in the stream", offset);
php_stream_close(stream);
RETURN_FALSE;
}
/* uses mmap if possible */
contents = php_stream_copy_to_mem(stream, maxlen, 0);
if (contents && ZSTR_LEN(contents) > 0) {
RETVAL_STR(contents);
} else if (contents) {
zend_string_release(contents);
RETVAL_EMPTY_STRING();
} else {
RETVAL_FALSE;
}
php_stream_close(stream);
return;
}
}
skip_phar:
PHAR_G(orig_file_get_contents)(INTERNAL_FUNCTION_PARAM_PASSTHRU);
return;
}
/* }}} */
PHAR_FUNC(phar_readfile) /* {{{ */
{
char *filename;
size_t filename_len;
int size = 0;
zend_bool use_include_path = 0;
zval *zcontext = NULL;
php_stream *stream;
if (!PHAR_G(intercepted)) {
goto skip_phar;
}
if ((HT_FLAGS(&PHAR_G(phar_fname_map)) && !zend_hash_num_elements(&(PHAR_G(phar_fname_map))))
&& !HT_FLAGS(&cached_phars)) {
goto skip_phar;
}
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(), "p|br!", &filename, &filename_len, &use_include_path, &zcontext) == FAILURE) {
goto skip_phar;
}
if (use_include_path || (!IS_ABSOLUTE_PATH(filename, filename_len) && !strstr(filename, "://"))) {
char *arch, *entry, *fname;
zend_string *entry_str = NULL;
size_t arch_len, entry_len, fname_len;
php_stream_context *context = NULL;
char *name;
phar_archive_data *phar;
fname = (char*)zend_get_executed_filename();
if (strncasecmp(fname, "phar://", 7)) {
goto skip_phar;
}
fname_len = strlen(fname);
if (FAILURE == phar_split_fname(fname, fname_len, &arch, &arch_len, &entry, &entry_len, 2, 0)) {
goto skip_phar;
}
efree(entry);
entry = filename;
/* fopen within phar, if :// is not in the url, then prepend phar://<archive>/ */
entry_len = filename_len;
/* retrieving a file defaults to within the current directory, so use this if possible */
if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL)) {
efree(arch);
goto skip_phar;
}
if (use_include_path) {
if (!(entry_str = phar_find_in_include_path(entry, entry_len, NULL))) {
/* this file is not in the phar, use the original path */
efree(arch);
goto skip_phar;
} else {
name = ZSTR_VAL(entry_str);
}
} else {
entry = phar_fix_filepath(estrndup(entry, entry_len), &entry_len, 1);
if (entry[0] == '/') {
if (!zend_hash_str_exists(&(phar->manifest), entry + 1, entry_len - 1)) {
/* this file is not in the phar, use the original path */
notfound:
efree(entry);
efree(arch);
goto skip_phar;
}
} else {
if (!zend_hash_str_exists(&(phar->manifest), entry, entry_len)) {
goto notfound;
}
}
/* auto-convert to phar:// */
if (entry[0] == '/') {
spprintf(&name, 4096, "phar://%s%s", arch, entry);
} else {
spprintf(&name, 4096, "phar://%s/%s", arch, entry);
}
efree(entry);
}
efree(arch);
context = php_stream_context_from_zval(zcontext, 0);
stream = php_stream_open_wrapper_ex(name, "rb", 0 | REPORT_ERRORS, NULL, context);
if (entry_str) {
zend_string_release(entry_str);
} else {
efree(name);
}
if (stream == NULL) {
RETURN_FALSE;
}
size = php_stream_passthru(stream);
php_stream_close(stream);
RETURN_LONG(size);
}
skip_phar:
PHAR_G(orig_readfile)(INTERNAL_FUNCTION_PARAM_PASSTHRU);
return;
}
/* }}} */
PHAR_FUNC(phar_fopen) /* {{{ */
{
char *filename, *mode;
size_t filename_len, mode_len;
zend_bool use_include_path = 0;
zval *zcontext = NULL;
php_stream *stream;
if (!PHAR_G(intercepted)) {
goto skip_phar;
}
if ((HT_FLAGS(&PHAR_G(phar_fname_map)) && !zend_hash_num_elements(&(PHAR_G(phar_fname_map))))
&& !HT_FLAGS(&cached_phars)) {
/* no need to check, include_path not even specified in fopen/ no active phars */
goto skip_phar;
}
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(), "ps|br", &filename, &filename_len, &mode, &mode_len, &use_include_path, &zcontext) == FAILURE) {
goto skip_phar;
}
if (use_include_path || (!IS_ABSOLUTE_PATH(filename, filename_len) && !strstr(filename, "://"))) {
char *arch, *entry, *fname;
zend_string *entry_str = NULL;
size_t arch_len, entry_len, fname_len;
php_stream_context *context = NULL;
char *name;
phar_archive_data *phar;
fname = (char*)zend_get_executed_filename();
if (strncasecmp(fname, "phar://", 7)) {
goto skip_phar;
}
fname_len = strlen(fname);
if (FAILURE == phar_split_fname(fname, fname_len, &arch, &arch_len, &entry, &entry_len, 2, 0)) {
goto skip_phar;
}
efree(entry);
entry = filename;
/* fopen within phar, if :// is not in the url, then prepend phar://<archive>/ */
entry_len = filename_len;
/* retrieving a file defaults to within the current directory, so use this if possible */
if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL)) {
efree(arch);
goto skip_phar;
}
if (use_include_path) {
if (!(entry_str = phar_find_in_include_path(entry, entry_len, NULL))) {
/* this file is not in the phar, use the original path */
efree(arch);
goto skip_phar;
} else {
name = ZSTR_VAL(entry_str);
}
} else {
entry = phar_fix_filepath(estrndup(entry, entry_len), &entry_len, 1);
if (entry[0] == '/') {
if (!zend_hash_str_exists(&(phar->manifest), entry + 1, entry_len - 1)) {
/* this file is not in the phar, use the original path */
notfound:
efree(entry);
efree(arch);
goto skip_phar;
}
} else {
if (!zend_hash_str_exists(&(phar->manifest), entry, entry_len)) {
/* this file is not in the phar, use the original path */
goto notfound;
}
}
/* auto-convert to phar:// */
if (entry[0] == '/') {
spprintf(&name, 4096, "phar://%s%s", arch, entry);
} else {
spprintf(&name, 4096, "phar://%s/%s", arch, entry);
}
efree(entry);
}
efree(arch);
context = php_stream_context_from_zval(zcontext, 0);
stream = php_stream_open_wrapper_ex(name, mode, 0 | REPORT_ERRORS, NULL, context);
if (entry_str) {
zend_string_release(entry_str);
} else {
efree(name);
}
if (stream == NULL) {
RETURN_FALSE;
}
php_stream_to_zval(stream, return_value);
if (zcontext) {
Z_ADDREF_P(zcontext);
}
return;
}
skip_phar:
PHAR_G(orig_fopen)(INTERNAL_FUNCTION_PARAM_PASSTHRU);
return;
}
/* }}} */
#define IS_LINK_OPERATION(__t) ((__t) == FS_TYPE || (__t) == FS_IS_LINK || (__t) == FS_LSTAT)
#define IS_EXISTS_CHECK(__t) ((__t) == FS_EXISTS || (__t) == FS_IS_W || (__t) == FS_IS_R || (__t) == FS_IS_X || (__t) == FS_IS_FILE || (__t) == FS_IS_DIR || (__t) == FS_IS_LINK)
#define IS_ABLE_CHECK(__t) ((__t) == FS_IS_R || (__t) == FS_IS_W || (__t) == FS_IS_X)
#define IS_ACCESS_CHECK(__t) (IS_ABLE_CHECK(type) || (__t) == FS_EXISTS)
/* {{{ php_stat
*/
static void phar_fancy_stat(zend_stat_t *stat_sb, int type, zval *return_value)
{
zval stat_dev, stat_ino, stat_mode, stat_nlink, stat_uid, stat_gid, stat_rdev,
stat_size, stat_atime, stat_mtime, stat_ctime, stat_blksize, stat_blocks;
int rmask=S_IROTH, wmask=S_IWOTH, xmask=S_IXOTH; /* access rights defaults to other */
char *stat_sb_names[13] = {
"dev", "ino", "mode", "nlink", "uid", "gid", "rdev",
"size", "atime", "mtime", "ctime", "blksize", "blocks"
};
if (type >= FS_IS_W && type <= FS_IS_X) {
if(stat_sb->st_uid==getuid()) {
rmask=S_IRUSR;
wmask=S_IWUSR;
xmask=S_IXUSR;
} else if(stat_sb->st_gid==getgid()) {
rmask=S_IRGRP;
wmask=S_IWGRP;
xmask=S_IXGRP;
} else {
int groups, n, i;
gid_t *gids;
groups = getgroups(0, NULL);
if(groups > 0) {
gids=(gid_t *)safe_emalloc(groups, sizeof(gid_t), 0);
n=getgroups(groups, gids);
for(i=0;i<n;++i){
if(stat_sb->st_gid==gids[i]) {
rmask=S_IRGRP;
wmask=S_IWGRP;
xmask=S_IXGRP;
break;
}
}
efree(gids);
}
}
}
switch (type) {
case FS_PERMS:
RETURN_LONG((zend_long)stat_sb->st_mode);
case FS_INODE:
RETURN_LONG((zend_long)stat_sb->st_ino);
case FS_SIZE:
RETURN_LONG((zend_long)stat_sb->st_size);
case FS_OWNER:
RETURN_LONG((zend_long)stat_sb->st_uid);
case FS_GROUP:
RETURN_LONG((zend_long)stat_sb->st_gid);
case FS_ATIME:
RETURN_LONG((zend_long)stat_sb->st_atime);
case FS_MTIME:
RETURN_LONG((zend_long)stat_sb->st_mtime);
case FS_CTIME:
RETURN_LONG((zend_long)stat_sb->st_ctime);
case FS_TYPE:
if (S_ISLNK(stat_sb->st_mode)) {
RETURN_STRING("link");
}
switch(stat_sb->st_mode & S_IFMT) {
case S_IFDIR: RETURN_STRING("dir");
case S_IFREG: RETURN_STRING("file");
}
php_error_docref(NULL, E_NOTICE, "Unknown file type (%u)", stat_sb->st_mode & S_IFMT);
RETURN_STRING("unknown");
case FS_IS_W:
RETURN_BOOL((stat_sb->st_mode & wmask) != 0);
case FS_IS_R:
RETURN_BOOL((stat_sb->st_mode&rmask)!=0);
case FS_IS_X:
RETURN_BOOL((stat_sb->st_mode&xmask)!=0 && !S_ISDIR(stat_sb->st_mode));
case FS_IS_FILE:
RETURN_BOOL(S_ISREG(stat_sb->st_mode));
case FS_IS_DIR:
RETURN_BOOL(S_ISDIR(stat_sb->st_mode));
case FS_IS_LINK:
RETURN_BOOL(S_ISLNK(stat_sb->st_mode));
case FS_EXISTS:
RETURN_TRUE; /* the false case was done earlier */
case FS_LSTAT:
/* FALLTHROUGH */
case FS_STAT:
array_init(return_value);
ZVAL_LONG(&stat_dev, stat_sb->st_dev);
ZVAL_LONG(&stat_ino, stat_sb->st_ino);
ZVAL_LONG(&stat_mode, stat_sb->st_mode);
ZVAL_LONG(&stat_nlink, stat_sb->st_nlink);
ZVAL_LONG(&stat_uid, stat_sb->st_uid);
ZVAL_LONG(&stat_gid, stat_sb->st_gid);
#ifdef HAVE_ST_RDEV
ZVAL_LONG(&stat_rdev, stat_sb->st_rdev);
#else
ZVAL_LONG(&stat_rdev, -1);
#endif
ZVAL_LONG(&stat_size, stat_sb->st_size);
ZVAL_LONG(&stat_atime, stat_sb->st_atime);
ZVAL_LONG(&stat_mtime, stat_sb->st_mtime);
ZVAL_LONG(&stat_ctime, stat_sb->st_ctime);
#ifdef HAVE_ST_BLKSIZE
ZVAL_LONG(&stat_blksize, stat_sb->st_blksize);
#else
ZVAL_LONG(&stat_blksize,-1);
#endif
#ifdef HAVE_ST_BLOCKS
ZVAL_LONG(&stat_blocks, stat_sb->st_blocks);
#else
ZVAL_LONG(&stat_blocks,-1);
#endif
/* Store numeric indexes in proper order */
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_dev);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_ino);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_mode);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_nlink);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_uid);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_gid);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_rdev);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_size);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_atime);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_mtime);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_ctime);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_blksize);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_blocks);
/* Store string indexes referencing the same zval*/
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[0], strlen(stat_sb_names[0]), &stat_dev);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[1], strlen(stat_sb_names[1]), &stat_ino);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[2], strlen(stat_sb_names[2]), &stat_mode);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[3], strlen(stat_sb_names[3]), &stat_nlink);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[4], strlen(stat_sb_names[4]), &stat_uid);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[5], strlen(stat_sb_names[5]), &stat_gid);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[6], strlen(stat_sb_names[6]), &stat_rdev);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[7], strlen(stat_sb_names[7]), &stat_size);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[8], strlen(stat_sb_names[8]), &stat_atime);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[9], strlen(stat_sb_names[9]), &stat_mtime);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[10], strlen(stat_sb_names[10]), &stat_ctime);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[11], strlen(stat_sb_names[11]), &stat_blksize);
zend_hash_str_update(Z_ARRVAL_P(return_value), stat_sb_names[12], strlen(stat_sb_names[12]), &stat_blocks);
return;
}
php_error_docref(NULL, E_WARNING, "Didn't understand stat call");
RETURN_FALSE;
}
/* }}} */
static void phar_file_stat(const char *filename, size_t filename_length, int type, zif_handler orig_stat_func, INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
{
if (!filename_length) {
RETURN_FALSE;
}
if (!IS_ABSOLUTE_PATH(filename, filename_length) && !strstr(filename, "://")) {
char *arch, *entry, *fname;
size_t arch_len, entry_len, fname_len;
zend_stat_t sb = {0};
phar_entry_info *data = NULL;
phar_archive_data *phar;
fname = (char*)zend_get_executed_filename();
/* we are checking for existence of a file within the relative path. Chances are good that this is
retrieving something from within the phar archive */
if (strncasecmp(fname, "phar://", 7)) {
goto skip_phar;
}
fname_len = strlen(fname);
if (PHAR_G(last_phar) && fname_len - 7 >= PHAR_G(last_phar_name_len) && !memcmp(fname + 7, PHAR_G(last_phar_name), PHAR_G(last_phar_name_len))) {
arch = estrndup(PHAR_G(last_phar_name), PHAR_G(last_phar_name_len));
arch_len = PHAR_G(last_phar_name_len);
entry = estrndup(filename, filename_length);
/* fopen within phar, if :// is not in the url, then prepend phar://<archive>/ */
entry_len = filename_length;
phar = PHAR_G(last_phar);
goto splitted;
}
if (SUCCESS == phar_split_fname(fname, fname_len, &arch, &arch_len, &entry, &entry_len, 2, 0)) {
efree(entry);
entry = estrndup(filename, filename_length);
/* fopen within phar, if :// is not in the url, then prepend phar://<archive>/ */
entry_len = filename_length;
if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL)) {
efree(arch);
efree(entry);
goto skip_phar;
}
splitted:
entry = phar_fix_filepath(entry, &entry_len, 1);
if (entry[0] == '/') {
if (NULL != (data = zend_hash_str_find_ptr(&(phar->manifest), entry + 1, entry_len - 1))) {
efree(entry);
goto stat_entry;
}
goto notfound;
}
if (NULL != (data = zend_hash_str_find_ptr(&(phar->manifest), entry, entry_len))) {
efree(entry);
goto stat_entry;
}
if (zend_hash_str_exists(&(phar->virtual_dirs), entry, entry_len)) {
efree(entry);
efree(arch);
if (IS_EXISTS_CHECK(type)) {
RETURN_TRUE;
}
sb.st_size = 0;
sb.st_mode = 0777;
sb.st_mode |= S_IFDIR; /* regular directory */
sb.st_mtime = phar->max_timestamp;
sb.st_atime = phar->max_timestamp;
sb.st_ctime = phar->max_timestamp;
goto statme_baby;
} else {
char *save;
size_t save_len;
notfound:
efree(entry);
save = PHAR_G(cwd);
save_len = PHAR_G(cwd_len);
/* this file is not in the current directory, use the original path */
entry = estrndup(filename, filename_length);
entry_len = filename_length;
PHAR_G(cwd) = "/";
PHAR_G(cwd_len) = 0;
/* clean path without cwd */
entry = phar_fix_filepath(entry, &entry_len, 1);
if (NULL != (data = zend_hash_str_find_ptr(&(phar->manifest), entry + 1, entry_len - 1))) {
PHAR_G(cwd) = save;
PHAR_G(cwd_len) = save_len;
efree(entry);
if (IS_EXISTS_CHECK(type)) {
efree(arch);
RETURN_TRUE;
}
goto stat_entry;
}
if (zend_hash_str_exists(&(phar->virtual_dirs), entry + 1, entry_len - 1)) {
PHAR_G(cwd) = save;
PHAR_G(cwd_len) = save_len;
efree(entry);
efree(arch);
if (IS_EXISTS_CHECK(type)) {
RETURN_TRUE;
}
sb.st_size = 0;
sb.st_mode = 0777;
sb.st_mode |= S_IFDIR; /* regular directory */
sb.st_mtime = phar->max_timestamp;
sb.st_atime = phar->max_timestamp;
sb.st_ctime = phar->max_timestamp;
goto statme_baby;
}
PHAR_G(cwd) = save;
PHAR_G(cwd_len) = save_len;
efree(entry);
efree(arch);
/* Error Occurred */
if (!IS_EXISTS_CHECK(type)) {
php_error_docref(NULL, E_WARNING, "%sstat failed for %s", IS_LINK_OPERATION(type) ? "L" : "", filename);
}
RETURN_FALSE;
}
stat_entry:
efree(arch);
if (!data->is_dir) {
sb.st_size = data->uncompressed_filesize;
sb.st_mode = data->flags & PHAR_ENT_PERM_MASK;
if (data->link) {
sb.st_mode |= S_IFREG|S_IFLNK; /* regular file */
} else {
sb.st_mode |= S_IFREG; /* regular file */
}
/* timestamp is just the timestamp when this was added to the phar */
sb.st_mtime = data->timestamp;
sb.st_atime = data->timestamp;
sb.st_ctime = data->timestamp;
} else {
sb.st_size = 0;
sb.st_mode = data->flags & PHAR_ENT_PERM_MASK;
sb.st_mode |= S_IFDIR; /* regular directory */
if (data->link) {
sb.st_mode |= S_IFLNK;
}
/* timestamp is just the timestamp when this was added to the phar */
sb.st_mtime = data->timestamp;
sb.st_atime = data->timestamp;
sb.st_ctime = data->timestamp;
}
statme_baby:
if (!phar->is_writeable) {
sb.st_mode = (sb.st_mode & 0555) | (sb.st_mode & ~0777);
}
sb.st_nlink = 1;
sb.st_rdev = -1;
/* this is only for APC, so use /dev/null device - no chance of conflict there! */
sb.st_dev = 0xc;
/* generate unique inode number for alias/filename, so no phars will conflict */
if (data) {
sb.st_ino = data->inode;
}
#ifndef PHP_WIN32
sb.st_blksize = -1;
sb.st_blocks = -1;
#endif
phar_fancy_stat(&sb, type, return_value);
return;
}
}
skip_phar:
orig_stat_func(INTERNAL_FUNCTION_PARAM_PASSTHRU);
return;
}
/* }}} */
#define PharFileFunction(fname, funcnum, orig) \
ZEND_NAMED_FUNCTION(fname) { \
if (!PHAR_G(intercepted)) { \
PHAR_G(orig)(INTERNAL_FUNCTION_PARAM_PASSTHRU); \
} else { \
char *filename; \
size_t filename_len; \
\
if (zend_parse_parameters(ZEND_NUM_ARGS(), "p", &filename, &filename_len) == FAILURE) { \
return; \
} \
\
phar_file_stat(filename, filename_len, funcnum, PHAR_G(orig), INTERNAL_FUNCTION_PARAM_PASSTHRU); \
} \
}
/* }}} */
/* {{{ proto int fileperms(string filename)
Get file permissions */
PharFileFunction(phar_fileperms, FS_PERMS, orig_fileperms)
/* }}} */
/* {{{ proto int fileinode(string filename)
Get file inode */
PharFileFunction(phar_fileinode, FS_INODE, orig_fileinode)
/* }}} */
/* {{{ proto int filesize(string filename)
Get file size */
PharFileFunction(phar_filesize, FS_SIZE, orig_filesize)
/* }}} */
/* {{{ proto int fileowner(string filename)
Get file owner */
PharFileFunction(phar_fileowner, FS_OWNER, orig_fileowner)
/* }}} */
/* {{{ proto int filegroup(string filename)
Get file group */
PharFileFunction(phar_filegroup, FS_GROUP, orig_filegroup)
/* }}} */
/* {{{ proto int fileatime(string filename)
Get last access time of file */
PharFileFunction(phar_fileatime, FS_ATIME, orig_fileatime)
/* }}} */
/* {{{ proto int filemtime(string filename)
Get last modification time of file */
PharFileFunction(phar_filemtime, FS_MTIME, orig_filemtime)
/* }}} */
/* {{{ proto int filectime(string filename)
Get inode modification time of file */
PharFileFunction(phar_filectime, FS_CTIME, orig_filectime)
/* }}} */
/* {{{ proto string filetype(string filename)
Get file type */
PharFileFunction(phar_filetype, FS_TYPE, orig_filetype)
/* }}} */
/* {{{ proto bool is_writable(string filename)
Returns true if file can be written */
PharFileFunction(phar_is_writable, FS_IS_W, orig_is_writable)
/* }}} */
/* {{{ proto bool is_readable(string filename)
Returns true if file can be read */
PharFileFunction(phar_is_readable, FS_IS_R, orig_is_readable)
/* }}} */
/* {{{ proto bool is_executable(string filename)
Returns true if file is executable */
PharFileFunction(phar_is_executable, FS_IS_X, orig_is_executable)
/* }}} */
/* {{{ proto bool file_exists(string filename)
Returns true if filename exists */
PharFileFunction(phar_file_exists, FS_EXISTS, orig_file_exists)
/* }}} */
/* {{{ proto bool is_dir(string filename)
Returns true if file is directory */
PharFileFunction(phar_is_dir, FS_IS_DIR, orig_is_dir)
/* }}} */
PHAR_FUNC(phar_is_file) /* {{{ */
{
char *filename;
size_t filename_len;
if (!PHAR_G(intercepted)) {
goto skip_phar;
}
if ((HT_FLAGS(&PHAR_G(phar_fname_map)) && !zend_hash_num_elements(&(PHAR_G(phar_fname_map))))
&& !HT_FLAGS(&cached_phars)) {
goto skip_phar;
}
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(), "p", &filename, &filename_len) == FAILURE) {
goto skip_phar;
}
if (!IS_ABSOLUTE_PATH(filename, filename_len) && !strstr(filename, "://")) {
char *arch, *entry, *fname;
size_t arch_len, entry_len, fname_len;
fname = (char*)zend_get_executed_filename();
/* we are checking for existence of a file within the relative path. Chances are good that this is
retrieving something from within the phar archive */
if (strncasecmp(fname, "phar://", 7)) {
goto skip_phar;
}
fname_len = strlen(fname);
if (SUCCESS == phar_split_fname(fname, fname_len, &arch, &arch_len, &entry, &entry_len, 2, 0)) {
phar_archive_data *phar;
efree(entry);
entry = filename;
/* fopen within phar, if :// is not in the url, then prepend phar://<archive>/ */
entry_len = filename_len;
/* retrieving a file within the current directory, so use this if possible */
if (SUCCESS == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL)) {
phar_entry_info *etemp;
entry = phar_fix_filepath(estrndup(entry, entry_len), &entry_len, 1);
if (entry[0] == '/') {
if (NULL != (etemp = zend_hash_str_find_ptr(&(phar->manifest), entry + 1, entry_len - 1))) {
/* this file is not in the current directory, use the original path */
found_it:
efree(entry);
efree(arch);
RETURN_BOOL(!etemp->is_dir);
}
} else {
if (NULL != (etemp = zend_hash_str_find_ptr(&(phar->manifest), entry, entry_len))) {
goto found_it;
}
}
}
if (entry != filename) {
efree(entry);
}
efree(arch);
RETURN_FALSE;
}
}
skip_phar:
PHAR_G(orig_is_file)(INTERNAL_FUNCTION_PARAM_PASSTHRU);
return;
}
/* }}} */
PHAR_FUNC(phar_is_link) /* {{{ */
{
char *filename;
size_t filename_len;
if (!PHAR_G(intercepted)) {
goto skip_phar;
}
if ((HT_FLAGS(&PHAR_G(phar_fname_map)) && !zend_hash_num_elements(&(PHAR_G(phar_fname_map))))
&& !HT_FLAGS(&cached_phars)) {
goto skip_phar;
}
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(), "p", &filename, &filename_len) == FAILURE) {
goto skip_phar;
}
if (!IS_ABSOLUTE_PATH(filename, filename_len) && !strstr(filename, "://")) {
char *arch, *entry, *fname;
size_t arch_len, entry_len, fname_len;
fname = (char*)zend_get_executed_filename();
/* we are checking for existence of a file within the relative path. Chances are good that this is
retrieving something from within the phar archive */
if (strncasecmp(fname, "phar://", 7)) {
goto skip_phar;
}
fname_len = strlen(fname);
if (SUCCESS == phar_split_fname(fname, fname_len, &arch, &arch_len, &entry, &entry_len, 2, 0)) {
phar_archive_data *phar;
efree(entry);
entry = filename;
/* fopen within phar, if :// is not in the url, then prepend phar://<archive>/ */
entry_len = filename_len;
/* retrieving a file within the current directory, so use this if possible */
if (SUCCESS == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL)) {
phar_entry_info *etemp;
entry = phar_fix_filepath(estrndup(entry, entry_len), &entry_len, 1);
if (entry[0] == '/') {
if (NULL != (etemp = zend_hash_str_find_ptr(&(phar->manifest), entry + 1, entry_len - 1))) {
/* this file is not in the current directory, use the original path */
found_it:
efree(entry);
efree(arch);
RETURN_BOOL(etemp->link);
}
} else {
if (NULL != (etemp = zend_hash_str_find_ptr(&(phar->manifest), entry, entry_len))) {
goto found_it;
}
}
}
efree(entry);
efree(arch);
RETURN_FALSE;
}
}
skip_phar:
PHAR_G(orig_is_link)(INTERNAL_FUNCTION_PARAM_PASSTHRU);
return;
}
/* }}} */
/* {{{ proto array lstat(string filename)
Give information about a file or symbolic link */
PharFileFunction(phar_lstat, FS_LSTAT, orig_lstat)
/* }}} */
/* {{{ proto array stat(string filename)
Give information about a file */
PharFileFunction(phar_stat, FS_STAT, orig_stat)
/* }}} */
/* {{{ void phar_intercept_functions(void) */
void phar_intercept_functions(void)
{
if (!PHAR_G(request_init)) {
PHAR_G(cwd) = NULL;
PHAR_G(cwd_len) = 0;
}
PHAR_G(intercepted) = 1;
}
/* }}} */
/* {{{ void phar_release_functions(void) */
void phar_release_functions(void)
{
PHAR_G(intercepted) = 0;
}
/* }}} */
/* {{{ void phar_intercept_functions_init(void) */
#define PHAR_INTERCEPT(func) \
PHAR_G(orig_##func) = NULL; \
if (NULL != (orig = zend_hash_str_find_ptr(CG(function_table), #func, sizeof(#func)-1))) { \
PHAR_G(orig_##func) = orig->internal_function.handler; \
orig->internal_function.handler = phar_##func; \
}
void phar_intercept_functions_init(void)
{
zend_function *orig;
PHAR_INTERCEPT(fopen);
PHAR_INTERCEPT(file_get_contents);
PHAR_INTERCEPT(is_file);
PHAR_INTERCEPT(is_link);
PHAR_INTERCEPT(is_dir);
PHAR_INTERCEPT(opendir);
PHAR_INTERCEPT(file_exists);
PHAR_INTERCEPT(fileperms);
PHAR_INTERCEPT(fileinode);
PHAR_INTERCEPT(filesize);
PHAR_INTERCEPT(fileowner);
PHAR_INTERCEPT(filegroup);
PHAR_INTERCEPT(fileatime);
PHAR_INTERCEPT(filemtime);
PHAR_INTERCEPT(filectime);
PHAR_INTERCEPT(filetype);
PHAR_INTERCEPT(is_writable);
PHAR_INTERCEPT(is_readable);
PHAR_INTERCEPT(is_executable);
PHAR_INTERCEPT(lstat);
PHAR_INTERCEPT(stat);
PHAR_INTERCEPT(readfile);
PHAR_G(intercepted) = 0;
}
/* }}} */
/* {{{ void phar_intercept_functions_shutdown(void) */
#define PHAR_RELEASE(func) \
if (PHAR_G(orig_##func) && NULL != (orig = zend_hash_str_find_ptr(CG(function_table), #func, sizeof(#func)-1))) { \
orig->internal_function.handler = PHAR_G(orig_##func); \
} \
PHAR_G(orig_##func) = NULL;
void phar_intercept_functions_shutdown(void)
{
zend_function *orig;
PHAR_RELEASE(fopen);
PHAR_RELEASE(file_get_contents);
PHAR_RELEASE(is_file);
PHAR_RELEASE(is_dir);
PHAR_RELEASE(opendir);
PHAR_RELEASE(file_exists);
PHAR_RELEASE(fileperms);
PHAR_RELEASE(fileinode);
PHAR_RELEASE(filesize);
PHAR_RELEASE(fileowner);
PHAR_RELEASE(filegroup);
PHAR_RELEASE(fileatime);
PHAR_RELEASE(filemtime);
PHAR_RELEASE(filectime);
PHAR_RELEASE(filetype);
PHAR_RELEASE(is_writable);
PHAR_RELEASE(is_readable);
PHAR_RELEASE(is_executable);
PHAR_RELEASE(lstat);
PHAR_RELEASE(stat);
PHAR_RELEASE(readfile);
PHAR_G(intercepted) = 0;
}
/* }}} */
static struct _phar_orig_functions {
zif_handler orig_fopen;
zif_handler orig_file_get_contents;
zif_handler orig_is_file;
zif_handler orig_is_link;
zif_handler orig_is_dir;
zif_handler orig_opendir;
zif_handler orig_file_exists;
zif_handler orig_fileperms;
zif_handler orig_fileinode;
zif_handler orig_filesize;
zif_handler orig_fileowner;
zif_handler orig_filegroup;
zif_handler orig_fileatime;
zif_handler orig_filemtime;
zif_handler orig_filectime;
zif_handler orig_filetype;
zif_handler orig_is_writable;
zif_handler orig_is_readable;
zif_handler orig_is_executable;
zif_handler orig_lstat;
zif_handler orig_readfile;
zif_handler orig_stat;
} phar_orig_functions = {NULL};
void phar_save_orig_functions(void) /* {{{ */
{
phar_orig_functions.orig_fopen = PHAR_G(orig_fopen);
phar_orig_functions.orig_file_get_contents = PHAR_G(orig_file_get_contents);
phar_orig_functions.orig_is_file = PHAR_G(orig_is_file);
phar_orig_functions.orig_is_link = PHAR_G(orig_is_link);
phar_orig_functions.orig_is_dir = PHAR_G(orig_is_dir);
phar_orig_functions.orig_opendir = PHAR_G(orig_opendir);
phar_orig_functions.orig_file_exists = PHAR_G(orig_file_exists);
phar_orig_functions.orig_fileperms = PHAR_G(orig_fileperms);
phar_orig_functions.orig_fileinode = PHAR_G(orig_fileinode);
phar_orig_functions.orig_filesize = PHAR_G(orig_filesize);
phar_orig_functions.orig_fileowner = PHAR_G(orig_fileowner);
phar_orig_functions.orig_filegroup = PHAR_G(orig_filegroup);
phar_orig_functions.orig_fileatime = PHAR_G(orig_fileatime);
phar_orig_functions.orig_filemtime = PHAR_G(orig_filemtime);
phar_orig_functions.orig_filectime = PHAR_G(orig_filectime);
phar_orig_functions.orig_filetype = PHAR_G(orig_filetype);
phar_orig_functions.orig_is_writable = PHAR_G(orig_is_writable);
phar_orig_functions.orig_is_readable = PHAR_G(orig_is_readable);
phar_orig_functions.orig_is_executable = PHAR_G(orig_is_executable);
phar_orig_functions.orig_lstat = PHAR_G(orig_lstat);
phar_orig_functions.orig_readfile = PHAR_G(orig_readfile);
phar_orig_functions.orig_stat = PHAR_G(orig_stat);
}
/* }}} */
void phar_restore_orig_functions(void) /* {{{ */
{
PHAR_G(orig_fopen) = phar_orig_functions.orig_fopen;
PHAR_G(orig_file_get_contents) = phar_orig_functions.orig_file_get_contents;
PHAR_G(orig_is_file) = phar_orig_functions.orig_is_file;
PHAR_G(orig_is_link) = phar_orig_functions.orig_is_link;
PHAR_G(orig_is_dir) = phar_orig_functions.orig_is_dir;
PHAR_G(orig_opendir) = phar_orig_functions.orig_opendir;
PHAR_G(orig_file_exists) = phar_orig_functions.orig_file_exists;
PHAR_G(orig_fileperms) = phar_orig_functions.orig_fileperms;
PHAR_G(orig_fileinode) = phar_orig_functions.orig_fileinode;
PHAR_G(orig_filesize) = phar_orig_functions.orig_filesize;
PHAR_G(orig_fileowner) = phar_orig_functions.orig_fileowner;
PHAR_G(orig_filegroup) = phar_orig_functions.orig_filegroup;
PHAR_G(orig_fileatime) = phar_orig_functions.orig_fileatime;
PHAR_G(orig_filemtime) = phar_orig_functions.orig_filemtime;
PHAR_G(orig_filectime) = phar_orig_functions.orig_filectime;
PHAR_G(orig_filetype) = phar_orig_functions.orig_filetype;
PHAR_G(orig_is_writable) = phar_orig_functions.orig_is_writable;
PHAR_G(orig_is_readable) = phar_orig_functions.orig_is_readable;
PHAR_G(orig_is_executable) = phar_orig_functions.orig_is_executable;
PHAR_G(orig_lstat) = phar_orig_functions.orig_lstat;
PHAR_G(orig_readfile) = phar_orig_functions.orig_readfile;
PHAR_G(orig_stat) = phar_orig_functions.orig_stat;
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
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