/
util.c
2374 lines (2017 loc) · 63.2 KB
/
util.c
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/*
+----------------------------------------------------------------------+
| phar php single-file executable PHP extension |
| utility functions |
+----------------------------------------------------------------------+
| Copyright (c) 2005-2011 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> |
| Marcus Boerger <helly@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "phar_internal.h"
#ifdef PHAR_HASH_OK
#include "ext/hash/php_hash_sha.h"
#endif
#ifdef PHAR_HAVE_OPENSSL
/* OpenSSL includes */
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/crypto.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/conf.h>
#include <openssl/rand.h>
#include <openssl/ssl.h>
#include <openssl/pkcs12.h>
#else
static int phar_call_openssl_signverify(int is_sign, php_stream *fp, off_t end, char *key, int key_len, char **signature, int *signature_len TSRMLS_DC);
#endif
#if !defined(PHP_VERSION_ID) || PHP_VERSION_ID < 50300
extern php_stream_wrapper php_stream_phar_wrapper;
#endif
/* for links to relative location, prepend cwd of the entry */
static char *phar_get_link_location(phar_entry_info *entry TSRMLS_DC) /* {{{ */
{
char *p, *ret = NULL;
if (!entry->link) {
return NULL;
}
if (entry->link[0] == '/') {
return estrdup(entry->link + 1);
}
p = strrchr(entry->filename, '/');
if (p) {
*p = '\0';
spprintf(&ret, 0, "%s/%s", entry->filename, entry->link);
return ret;
}
return entry->link;
}
/* }}} */
phar_entry_info *phar_get_link_source(phar_entry_info *entry TSRMLS_DC) /* {{{ */
{
phar_entry_info *link_entry;
char *link;
if (!entry->link) {
return entry;
}
link = phar_get_link_location(entry TSRMLS_CC);
if (SUCCESS == zend_hash_find(&(entry->phar->manifest), entry->link, strlen(entry->link), (void **)&link_entry) ||
SUCCESS == zend_hash_find(&(entry->phar->manifest), link, strlen(link), (void **)&link_entry)) {
if (link != entry->link) {
efree(link);
}
return phar_get_link_source(link_entry TSRMLS_CC);
} else {
if (link != entry->link) {
efree(link);
}
return NULL;
}
}
/* }}} */
/* retrieve a phar_entry_info's current file pointer for reading contents */
php_stream *phar_get_efp(phar_entry_info *entry, int follow_links TSRMLS_DC) /* {{{ */
{
if (follow_links && entry->link) {
phar_entry_info *link_entry = phar_get_link_source(entry TSRMLS_CC);
if (link_entry && link_entry != entry) {
return phar_get_efp(link_entry, 1 TSRMLS_CC);
}
}
if (phar_get_fp_type(entry TSRMLS_CC) == PHAR_FP) {
if (!phar_get_entrypfp(entry TSRMLS_CC)) {
/* re-open just in time for cases where our refcount reached 0 on the phar archive */
phar_open_archive_fp(entry->phar TSRMLS_CC);
}
return phar_get_entrypfp(entry TSRMLS_CC);
} else if (phar_get_fp_type(entry TSRMLS_CC) == PHAR_UFP) {
return phar_get_entrypufp(entry TSRMLS_CC);
} else if (entry->fp_type == PHAR_MOD) {
return entry->fp;
} else {
/* temporary manifest entry */
if (!entry->fp) {
entry->fp = php_stream_open_wrapper(entry->tmp, "rb", STREAM_MUST_SEEK|0, NULL);
}
return entry->fp;
}
}
/* }}} */
int phar_seek_efp(phar_entry_info *entry, off_t offset, int whence, off_t position, int follow_links TSRMLS_DC) /* {{{ */
{
php_stream *fp = phar_get_efp(entry, follow_links TSRMLS_CC);
off_t temp, eoffset;
if (!fp) {
return -1;
}
if (follow_links) {
phar_entry_info *t;
t = phar_get_link_source(entry TSRMLS_CC);
if (t) {
entry = t;
}
}
if (entry->is_dir) {
return 0;
}
eoffset = phar_get_fp_offset(entry TSRMLS_CC);
switch (whence) {
case SEEK_END:
temp = eoffset + entry->uncompressed_filesize + offset;
break;
case SEEK_CUR:
temp = eoffset + position + offset;
break;
case SEEK_SET:
temp = eoffset + offset;
break;
default:
temp = 0;
break;
}
if (temp > eoffset + (off_t) entry->uncompressed_filesize) {
return -1;
}
if (temp < eoffset) {
return -1;
}
return php_stream_seek(fp, temp, SEEK_SET);
}
/* }}} */
/* mount an absolute path or uri to a path internal to the phar archive */
int phar_mount_entry(phar_archive_data *phar, char *filename, int filename_len, char *path, int path_len TSRMLS_DC) /* {{{ */
{
phar_entry_info entry = {0};
php_stream_statbuf ssb;
int is_phar;
const char *err;
if (phar_path_check(&path, &path_len, &err) > pcr_is_ok) {
return FAILURE;
}
if (path_len >= sizeof(".phar")-1 && !memcmp(path, ".phar", sizeof(".phar")-1)) {
/* no creating magic phar files by mounting them */
return FAILURE;
}
is_phar = (filename_len > 7 && !memcmp(filename, "phar://", 7));
entry.phar = phar;
entry.filename = estrndup(path, path_len);
#ifdef PHP_WIN32
phar_unixify_path_separators(entry.filename, path_len);
#endif
entry.filename_len = path_len;
if (is_phar) {
entry.tmp = estrndup(filename, filename_len);
} else {
entry.tmp = expand_filepath(filename, NULL TSRMLS_CC);
if (!entry.tmp) {
entry.tmp = estrndup(filename, filename_len);
}
}
#if PHP_API_VERSION < 20100412
if (PG(safe_mode) && !is_phar && (!php_checkuid(entry.tmp, NULL, CHECKUID_CHECK_FILE_AND_DIR))) {
efree(entry.tmp);
efree(entry.filename);
return FAILURE;
}
#endif
filename_len = strlen(entry.tmp);
filename = entry.tmp;
/* only check openbasedir for files, not for phar streams */
if (!is_phar && php_check_open_basedir(filename TSRMLS_CC)) {
efree(entry.tmp);
efree(entry.filename);
return FAILURE;
}
entry.is_mounted = 1;
entry.is_crc_checked = 1;
entry.fp_type = PHAR_TMP;
if (SUCCESS != php_stream_stat_path(filename, &ssb)) {
efree(entry.tmp);
efree(entry.filename);
return FAILURE;
}
if (ssb.sb.st_mode & S_IFDIR) {
entry.is_dir = 1;
if (SUCCESS != zend_hash_add(&phar->mounted_dirs, entry.filename, path_len, (void *)&(entry.filename), sizeof(char *), NULL)) {
/* directory already mounted */
efree(entry.tmp);
efree(entry.filename);
return FAILURE;
}
} else {
entry.is_dir = 0;
entry.uncompressed_filesize = entry.compressed_filesize = ssb.sb.st_size;
}
entry.flags = ssb.sb.st_mode;
if (SUCCESS == zend_hash_add(&phar->manifest, entry.filename, path_len, (void*)&entry, sizeof(phar_entry_info), NULL)) {
return SUCCESS;
}
efree(entry.tmp);
efree(entry.filename);
return FAILURE;
}
/* }}} */
char *phar_find_in_include_path(char *filename, int filename_len, phar_archive_data **pphar TSRMLS_DC) /* {{{ */
{
#if PHP_VERSION_ID >= 50300
char *path, *fname, *arch, *entry, *ret, *test;
int arch_len, entry_len, fname_len, ret_len;
phar_archive_data *phar;
if (pphar) {
*pphar = NULL;
} else {
pphar = &phar;
}
if (!zend_is_executing(TSRMLS_C) || !PHAR_G(cwd)) {
return phar_save_resolve_path(filename, filename_len TSRMLS_CC);
}
fname = zend_get_executed_filename(TSRMLS_C);
fname_len = strlen(fname);
if (PHAR_G(last_phar) && !memcmp(fname, "phar://", 7) && 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);
phar = PHAR_G(last_phar);
goto splitted;
}
if (fname_len < 7 || memcmp(fname, "phar://", 7) || SUCCESS != phar_split_fname(fname, strlen(fname), &arch, &arch_len, &entry, &entry_len, 1, 0 TSRMLS_CC)) {
return phar_save_resolve_path(filename, filename_len TSRMLS_CC);
}
efree(entry);
if (*filename == '.') {
int try_len;
if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL TSRMLS_CC)) {
efree(arch);
return phar_save_resolve_path(filename, filename_len TSRMLS_CC);
}
splitted:
if (pphar) {
*pphar = phar;
}
try_len = filename_len;
test = phar_fix_filepath(estrndup(filename, filename_len), &try_len, 1 TSRMLS_CC);
if (*test == '/') {
if (zend_hash_exists(&(phar->manifest), test + 1, try_len - 1)) {
spprintf(&ret, 0, "phar://%s%s", arch, test);
efree(arch);
efree(test);
return ret;
}
} else {
if (zend_hash_exists(&(phar->manifest), test, try_len)) {
spprintf(&ret, 0, "phar://%s/%s", arch, test);
efree(arch);
efree(test);
return ret;
}
}
efree(test);
}
spprintf(&path, MAXPATHLEN, "phar://%s/%s%c%s", arch, PHAR_G(cwd), DEFAULT_DIR_SEPARATOR, PG(include_path));
efree(arch);
ret = php_resolve_path(filename, filename_len, path TSRMLS_CC);
efree(path);
if (ret && strlen(ret) > 8 && !strncmp(ret, "phar://", 7)) {
ret_len = strlen(ret);
/* found phar:// */
if (SUCCESS != phar_split_fname(ret, ret_len, &arch, &arch_len, &entry, &entry_len, 1, 0 TSRMLS_CC)) {
return ret;
}
zend_hash_find(&(PHAR_GLOBALS->phar_fname_map), arch, arch_len, (void **) &pphar);
if (!pphar && PHAR_G(manifest_cached)) {
zend_hash_find(&cached_phars, arch, arch_len, (void **) &pphar);
}
efree(arch);
efree(entry);
}
return ret;
#else /* PHP 5.2 */
char resolved_path[MAXPATHLEN];
char trypath[MAXPATHLEN];
char *ptr, *end, *path = PG(include_path);
php_stream_wrapper *wrapper;
const char *p;
int n = 0;
char *fname, *arch, *entry, *ret, *test;
int arch_len, entry_len;
phar_archive_data *phar = NULL;
if (!filename) {
return NULL;
}
if (!zend_is_executing(TSRMLS_C) || !PHAR_G(cwd)) {
goto doit;
}
fname = zend_get_executed_filename(TSRMLS_C);
if (SUCCESS != phar_split_fname(fname, strlen(fname), &arch, &arch_len, &entry, &entry_len, 1, 0 TSRMLS_CC)) {
goto doit;
}
efree(entry);
if (*filename == '.') {
int try_len;
if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL TSRMLS_CC)) {
efree(arch);
goto doit;
}
try_len = filename_len;
test = phar_fix_filepath(estrndup(filename, filename_len), &try_len, 1 TSRMLS_CC);
if (*test == '/') {
if (zend_hash_exists(&(phar->manifest), test + 1, try_len - 1)) {
spprintf(&ret, 0, "phar://%s%s", arch, test);
efree(arch);
efree(test);
return ret;
}
} else {
if (zend_hash_exists(&(phar->manifest), test, try_len)) {
spprintf(&ret, 0, "phar://%s/%s", arch, test);
efree(arch);
efree(test);
return ret;
}
}
efree(test);
}
efree(arch);
doit:
if (*filename == '.' || IS_ABSOLUTE_PATH(filename, filename_len) || !path || !*path) {
if (tsrm_realpath(filename, resolved_path TSRMLS_CC)) {
return estrdup(resolved_path);
} else {
return NULL;
}
}
/* test for stream wrappers and return */
for (p = filename; p - filename < filename_len && (isalnum((int)*p) || *p == '+' || *p == '-' || *p == '.'); ++p, ++n);
if (n < filename_len - 3 && (*p == ':') && (!strncmp("//", p+1, 2) || ( filename_len > 4 && !memcmp("data", filename, 4)))) {
/* found stream wrapper, this is an absolute path until stream wrappers implement realpath */
return estrndup(filename, filename_len);
}
ptr = (char *) path;
while (ptr && *ptr) {
int len, is_stream_wrapper = 0, maybe_stream = 1;
end = strchr(ptr, DEFAULT_DIR_SEPARATOR);
#ifndef PHP_WIN32
/* search for stream wrapper */
if (end - ptr <= 1) {
maybe_stream = 0;
goto not_stream;
}
for (p = ptr, n = 0; p < end && (isalnum((int)*p) || *p == '+' || *p == '-' || *p == '.'); ++p, ++n);
if (n == end - ptr && *p && !strncmp("//", p+1, 2)) {
is_stream_wrapper = 1;
/* seek to real end of include_path portion */
end = strchr(end + 1, DEFAULT_DIR_SEPARATOR);
} else {
maybe_stream = 0;
}
not_stream:
#endif
if (end) {
if ((end-ptr) + 1 + filename_len + 1 >= MAXPATHLEN) {
ptr = end + 1;
continue;
}
memcpy(trypath, ptr, end-ptr);
len = end-ptr;
trypath[end-ptr] = '/';
memcpy(trypath+(end-ptr)+1, filename, filename_len+1);
ptr = end+1;
} else {
len = strlen(ptr);
if (len + 1 + filename_len + 1 >= MAXPATHLEN) {
break;
}
memcpy(trypath, ptr, len);
trypath[len] = '/';
memcpy(trypath+len+1, filename, filename_len+1);
ptr = NULL;
}
if (!is_stream_wrapper && maybe_stream) {
/* search for stream wrapper */
for (p = trypath, n = 0; isalnum((int)*p) || *p == '+' || *p == '-' || *p == '.'; ++p, ++n);
}
if (is_stream_wrapper || (n < len - 3 && (*p == ':') && (n > 1) && (!strncmp("//", p+1, 2) || !memcmp("data", trypath, 4)))) {
char *actual;
wrapper = php_stream_locate_url_wrapper(trypath, &actual, STREAM_OPEN_FOR_INCLUDE TSRMLS_CC);
if (wrapper == &php_plain_files_wrapper) {
strlcpy(trypath, actual, sizeof(trypath));
} else if (!wrapper) {
/* if wrapper is NULL, there was a mal-formed include_path stream wrapper, so skip this ptr */
continue;
} else {
if (wrapper->wops->url_stat) {
php_stream_statbuf ssb;
if (SUCCESS == wrapper->wops->url_stat(wrapper, trypath, 0, &ssb, NULL TSRMLS_CC)) {
if (wrapper == &php_stream_phar_wrapper) {
char *arch, *entry;
int arch_len, entry_len, ret_len;
ret_len = strlen(trypath);
/* found phar:// */
if (SUCCESS != phar_split_fname(trypath, ret_len, &arch, &arch_len, &entry, &entry_len, 1, 0 TSRMLS_CC)) {
return estrndup(trypath, ret_len);
}
zend_hash_find(&(PHAR_GLOBALS->phar_fname_map), arch, arch_len, (void **) &pphar);
if (!pphar && PHAR_G(manifest_cached)) {
zend_hash_find(&cached_phars, arch, arch_len, (void **) &pphar);
}
efree(arch);
efree(entry);
return estrndup(trypath, ret_len);
}
return estrdup(trypath);
}
}
continue;
}
}
if (tsrm_realpath(trypath, resolved_path TSRMLS_CC)) {
return estrdup(resolved_path);
}
} /* end provided path */
/* check in calling scripts' current working directory as a fall back case */
if (zend_is_executing(TSRMLS_C)) {
char *exec_fname = zend_get_executed_filename(TSRMLS_C);
int exec_fname_length = strlen(exec_fname);
const char *p;
int n = 0;
while ((--exec_fname_length >= 0) && !IS_SLASH(exec_fname[exec_fname_length]));
if (exec_fname && exec_fname[0] != '[' &&
exec_fname_length > 0 &&
exec_fname_length + 1 + filename_len + 1 < MAXPATHLEN) {
memcpy(trypath, exec_fname, exec_fname_length + 1);
memcpy(trypath+exec_fname_length + 1, filename, filename_len+1);
/* search for stream wrapper */
for (p = trypath; isalnum((int)*p) || *p == '+' || *p == '-' || *p == '.'; ++p, ++n);
if (n < exec_fname_length - 3 && (*p == ':') && (n > 1) && (!strncmp("//", p+1, 2) || !memcmp("data", trypath, 4))) {
char *actual;
wrapper = php_stream_locate_url_wrapper(trypath, &actual, STREAM_OPEN_FOR_INCLUDE TSRMLS_CC);
if (wrapper == &php_plain_files_wrapper) {
/* this should never technically happen, but we'll leave it here for completeness */
strlcpy(trypath, actual, sizeof(trypath));
} else if (!wrapper) {
/* if wrapper is NULL, there was a malformed include_path stream wrapper
this also should be impossible */
return NULL;
} else {
return estrdup(trypath);
}
}
if (tsrm_realpath(trypath, resolved_path TSRMLS_CC)) {
return estrdup(resolved_path);
}
}
}
return NULL;
#endif /* PHP 5.2 */
}
/* }}} */
/**
* Retrieve a copy of the file information on a single file within a phar, or null.
* This also transfers the open file pointer, if any, to the entry.
*
* If the file does not already exist, this will fail. Pre-existing files can be
* appended, truncated, or read. For read, if the entry is marked unmodified, it is
* assumed that the file pointer, if present, is opened for reading
*/
int phar_get_entry_data(phar_entry_data **ret, char *fname, int fname_len, char *path, int path_len, char *mode, char allow_dir, char **error, int security TSRMLS_DC) /* {{{ */
{
phar_archive_data *phar;
phar_entry_info *entry;
int for_write = mode[0] != 'r' || mode[1] == '+';
int for_append = mode[0] == 'a';
int for_create = mode[0] != 'r';
int for_trunc = mode[0] == 'w';
if (!ret) {
return FAILURE;
}
*ret = NULL;
if (error) {
*error = NULL;
}
if (FAILURE == phar_get_archive(&phar, fname, fname_len, NULL, 0, error TSRMLS_CC)) {
return FAILURE;
}
if (for_write && PHAR_G(readonly) && !phar->is_data) {
if (error) {
spprintf(error, 4096, "phar error: file \"%s\" in phar \"%s\" cannot be opened for writing, disabled by ini setting", path, fname);
}
return FAILURE;
}
if (!path_len) {
if (error) {
spprintf(error, 4096, "phar error: file \"\" in phar \"%s\" cannot be empty", fname);
}
return FAILURE;
}
really_get_entry:
if (allow_dir) {
if ((entry = phar_get_entry_info_dir(phar, path, path_len, allow_dir, for_create && !PHAR_G(readonly) && !phar->is_data ? NULL : error, security TSRMLS_CC)) == NULL) {
if (for_create && (!PHAR_G(readonly) || phar->is_data)) {
return SUCCESS;
}
return FAILURE;
}
} else {
if ((entry = phar_get_entry_info(phar, path, path_len, for_create && !PHAR_G(readonly) && !phar->is_data ? NULL : error, security TSRMLS_CC)) == NULL) {
if (for_create && (!PHAR_G(readonly) || phar->is_data)) {
return SUCCESS;
}
return FAILURE;
}
}
if (for_write && phar->is_persistent) {
if (FAILURE == phar_copy_on_write(&phar TSRMLS_CC)) {
if (error) {
spprintf(error, 4096, "phar error: file \"%s\" in phar \"%s\" cannot be opened for writing, could not make cached phar writeable", path, fname);
}
return FAILURE;
} else {
goto really_get_entry;
}
}
if (entry->is_modified && !for_write) {
if (error) {
spprintf(error, 4096, "phar error: file \"%s\" in phar \"%s\" cannot be opened for reading, writable file pointers are open", path, fname);
}
return FAILURE;
}
if (entry->fp_refcount && for_write) {
if (error) {
spprintf(error, 4096, "phar error: file \"%s\" in phar \"%s\" cannot be opened for writing, readable file pointers are open", path, fname);
}
return FAILURE;
}
if (entry->is_deleted) {
if (!for_create) {
return FAILURE;
}
entry->is_deleted = 0;
}
if (entry->is_dir) {
*ret = (phar_entry_data *) emalloc(sizeof(phar_entry_data));
(*ret)->position = 0;
(*ret)->fp = NULL;
(*ret)->phar = phar;
(*ret)->for_write = for_write;
(*ret)->internal_file = entry;
(*ret)->is_zip = entry->is_zip;
(*ret)->is_tar = entry->is_tar;
if (!phar->is_persistent) {
++(entry->phar->refcount);
++(entry->fp_refcount);
}
return SUCCESS;
}
if (entry->fp_type == PHAR_MOD) {
if (for_trunc) {
if (FAILURE == phar_create_writeable_entry(phar, entry, error TSRMLS_CC)) {
return FAILURE;
}
} else if (for_append) {
phar_seek_efp(entry, 0, SEEK_END, 0, 0 TSRMLS_CC);
}
} else {
if (for_write) {
if (entry->link) {
efree(entry->link);
entry->link = NULL;
entry->tar_type = (entry->is_tar ? TAR_FILE : '\0');
}
if (for_trunc) {
if (FAILURE == phar_create_writeable_entry(phar, entry, error TSRMLS_CC)) {
return FAILURE;
}
} else {
if (FAILURE == phar_separate_entry_fp(entry, error TSRMLS_CC)) {
return FAILURE;
}
}
} else {
if (FAILURE == phar_open_entry_fp(entry, error, 1 TSRMLS_CC)) {
return FAILURE;
}
}
}
*ret = (phar_entry_data *) emalloc(sizeof(phar_entry_data));
(*ret)->position = 0;
(*ret)->phar = phar;
(*ret)->for_write = for_write;
(*ret)->internal_file = entry;
(*ret)->is_zip = entry->is_zip;
(*ret)->is_tar = entry->is_tar;
(*ret)->fp = phar_get_efp(entry, 1 TSRMLS_CC);
if (entry->link) {
(*ret)->zero = phar_get_fp_offset(phar_get_link_source(entry TSRMLS_CC) TSRMLS_CC);
} else {
(*ret)->zero = phar_get_fp_offset(entry TSRMLS_CC);
}
if (!phar->is_persistent) {
++(entry->fp_refcount);
++(entry->phar->refcount);
}
return SUCCESS;
}
/* }}} */
/**
* Create a new dummy file slot within a writeable phar for a newly created file
*/
phar_entry_data *phar_get_or_create_entry_data(char *fname, int fname_len, char *path, int path_len, char *mode, char allow_dir, char **error, int security TSRMLS_DC) /* {{{ */
{
phar_archive_data *phar;
phar_entry_info *entry, etemp;
phar_entry_data *ret;
const char *pcr_error;
char is_dir;
#ifdef PHP_WIN32
phar_unixify_path_separators(path, path_len);
#endif
is_dir = (path_len && path[path_len - 1] == '/') ? 1 : 0;
if (FAILURE == phar_get_archive(&phar, fname, fname_len, NULL, 0, error TSRMLS_CC)) {
return NULL;
}
if (FAILURE == phar_get_entry_data(&ret, fname, fname_len, path, path_len, mode, allow_dir, error, security TSRMLS_CC)) {
return NULL;
} else if (ret) {
return ret;
}
if (phar_path_check(&path, &path_len, &pcr_error) > pcr_is_ok) {
if (error) {
spprintf(error, 0, "phar error: invalid path \"%s\" contains %s", path, pcr_error);
}
return NULL;
}
if (phar->is_persistent && FAILURE == phar_copy_on_write(&phar TSRMLS_CC)) {
if (error) {
spprintf(error, 4096, "phar error: file \"%s\" in phar \"%s\" cannot be created, could not make cached phar writeable", path, fname);
}
return NULL;
}
/* create a new phar data holder */
ret = (phar_entry_data *) emalloc(sizeof(phar_entry_data));
/* create an entry, this is a new file */
memset(&etemp, 0, sizeof(phar_entry_info));
etemp.filename_len = path_len;
etemp.fp_type = PHAR_MOD;
etemp.fp = php_stream_fopen_tmpfile();
if (!etemp.fp) {
if (error) {
spprintf(error, 0, "phar error: unable to create temporary file");
}
efree(ret);
return NULL;
}
etemp.fp_refcount = 1;
if (allow_dir == 2) {
etemp.is_dir = 1;
etemp.flags = etemp.old_flags = PHAR_ENT_PERM_DEF_DIR;
} else {
etemp.flags = etemp.old_flags = PHAR_ENT_PERM_DEF_FILE;
}
if (is_dir) {
etemp.filename_len--; /* strip trailing / */
path_len--;
}
phar_add_virtual_dirs(phar, path, path_len TSRMLS_CC);
etemp.is_modified = 1;
etemp.timestamp = time(0);
etemp.is_crc_checked = 1;
etemp.phar = phar;
etemp.filename = estrndup(path, path_len);
etemp.is_zip = phar->is_zip;
if (phar->is_tar) {
etemp.is_tar = phar->is_tar;
etemp.tar_type = etemp.is_dir ? TAR_DIR : TAR_FILE;
}
if (FAILURE == zend_hash_add(&phar->manifest, etemp.filename, path_len, (void*)&etemp, sizeof(phar_entry_info), (void **) &entry)) {
php_stream_close(etemp.fp);
if (error) {
spprintf(error, 0, "phar error: unable to add new entry \"%s\" to phar \"%s\"", etemp.filename, phar->fname);
}
efree(ret);
efree(etemp.filename);
return NULL;
}
if (!entry) {
php_stream_close(etemp.fp);
efree(etemp.filename);
efree(ret);
return NULL;
}
++(phar->refcount);
ret->phar = phar;
ret->fp = entry->fp;
ret->position = ret->zero = 0;
ret->for_write = 1;
ret->is_zip = entry->is_zip;
ret->is_tar = entry->is_tar;
ret->internal_file = entry;
return ret;
}
/* }}} */
/* initialize a phar_archive_data's read-only fp for existing phar data */
int phar_open_archive_fp(phar_archive_data *phar TSRMLS_DC) /* {{{ */
{
if (phar_get_pharfp(phar TSRMLS_CC)) {
return SUCCESS;
}
#if PHP_API_VERSION < 20100412
if (PG(safe_mode) && (!php_checkuid(phar->fname, NULL, CHECKUID_ALLOW_ONLY_FILE))) {
return FAILURE;
}
#endif
if (php_check_open_basedir(phar->fname TSRMLS_CC)) {
return FAILURE;
}
phar_set_pharfp(phar, php_stream_open_wrapper(phar->fname, "rb", IGNORE_URL|STREAM_MUST_SEEK|0, NULL) TSRMLS_CC);
if (!phar_get_pharfp(phar TSRMLS_CC)) {
return FAILURE;
}
return SUCCESS;
}
/* }}} */
/* copy file data from an existing to a new phar_entry_info that is not in the manifest */
int phar_copy_entry_fp(phar_entry_info *source, phar_entry_info *dest, char **error TSRMLS_DC) /* {{{ */
{
phar_entry_info *link;
if (FAILURE == phar_open_entry_fp(source, error, 1 TSRMLS_CC)) {
return FAILURE;
}
if (dest->link) {
efree(dest->link);
dest->link = NULL;
dest->tar_type = (dest->is_tar ? TAR_FILE : '\0');
}
dest->fp_type = PHAR_MOD;
dest->offset = 0;
dest->is_modified = 1;
dest->fp = php_stream_fopen_tmpfile();
phar_seek_efp(source, 0, SEEK_SET, 0, 1 TSRMLS_CC);
link = phar_get_link_source(source TSRMLS_CC);
if (!link) {
link = source;
}
if (SUCCESS != phar_stream_copy_to_stream(phar_get_efp(link, 0 TSRMLS_CC), dest->fp, link->uncompressed_filesize, NULL)) {
php_stream_close(dest->fp);
dest->fp_type = PHAR_FP;
if (error) {
spprintf(error, 4096, "phar error: unable to copy contents of file \"%s\" to \"%s\" in phar archive \"%s\"", source->filename, dest->filename, source->phar->fname);
}
return FAILURE;
}
return SUCCESS;
}
/* }}} */
/* open and decompress a compressed phar entry
*/
int phar_open_entry_fp(phar_entry_info *entry, char **error, int follow_links TSRMLS_DC) /* {{{ */
{
php_stream_filter *filter;
phar_archive_data *phar = entry->phar;
char *filtername;
off_t loc;
php_stream *ufp;
phar_entry_data dummy;
if (follow_links && entry->link) {
phar_entry_info *link_entry = phar_get_link_source(entry TSRMLS_CC);
if (link_entry && link_entry != entry) {
return phar_open_entry_fp(link_entry, error, 1 TSRMLS_CC);
}
}
if (entry->is_modified) {
return SUCCESS;
}
if (entry->fp_type == PHAR_TMP) {
if (!entry->fp) {
entry->fp = php_stream_open_wrapper(entry->tmp, "rb", STREAM_MUST_SEEK|0, NULL);
}
return SUCCESS;
}
if (entry->fp_type != PHAR_FP) {
/* either newly created or already modified */
return SUCCESS;
}
if (!phar_get_pharfp(phar TSRMLS_CC)) {
if (FAILURE == phar_open_archive_fp(phar TSRMLS_CC)) {
spprintf(error, 4096, "phar error: Cannot open phar archive \"%s\" for reading", phar->fname);
return FAILURE;
}
}
if ((entry->old_flags && !(entry->old_flags & PHAR_ENT_COMPRESSION_MASK)) || !(entry->flags & PHAR_ENT_COMPRESSION_MASK)) {
dummy.internal_file = entry;
dummy.phar = phar;
dummy.zero = entry->offset;
dummy.fp = phar_get_pharfp(phar TSRMLS_CC);
if (FAILURE == phar_postprocess_file(&dummy, entry->crc32, error, 1 TSRMLS_CC)) {
return FAILURE;
}
return SUCCESS;
}
if (!phar_get_entrypufp(entry TSRMLS_CC)) {
phar_set_entrypufp(entry, php_stream_fopen_tmpfile() TSRMLS_CC);
if (!phar_get_entrypufp(entry TSRMLS_CC)) {
spprintf(error, 4096, "phar error: Cannot open temporary file for decompressing phar archive \"%s\" file \"%s\"", phar->fname, entry->filename);
return FAILURE;
}
}
dummy.internal_file = entry;
dummy.phar = phar;
dummy.zero = entry->offset;
dummy.fp = phar_get_pharfp(phar TSRMLS_CC);
if (FAILURE == phar_postprocess_file(&dummy, entry->crc32, error, 1 TSRMLS_CC)) {
return FAILURE;
}
ufp = phar_get_entrypufp(entry TSRMLS_CC);
if ((filtername = phar_decompress_filter(entry, 0)) != NULL) {
filter = php_stream_filter_create(filtername, NULL, 0 TSRMLS_CC);
} else {
filter = NULL;
}
if (!filter) {
spprintf(error, 4096, "phar error: unable to read phar \"%s\" (cannot create %s filter while decompressing file \"%s\")", phar->fname, phar_decompress_filter(entry, 1), entry->filename);
return FAILURE;
}
/* now we can safely use proper decompression */
/* save the new offset location within ufp */
php_stream_seek(ufp, 0, SEEK_END);
loc = php_stream_tell(ufp);
php_stream_filter_append(&ufp->writefilters, filter);