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util.c
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/*
+----------------------------------------------------------------------+
| phar php single-file executable PHP extension |
| utility functions |
+----------------------------------------------------------------------+
| Copyright (c) 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: |
| https://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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Gregory Beaver <[email protected]> |
| Marcus Boerger <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "phar_internal.h"
#include "ext/hash/php_hash_sha.h"
#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, zend_off_t end, char *key, size_t key_len, char **signature, size_t *signature_len, php_uint32 sig_type);
#endif
/* for links to relative location, prepend cwd of the entry */
static char *phar_get_link_location(phar_entry_info *entry) /* {{{ */
{
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) /* {{{ */
{
phar_entry_info *link_entry;
char *link;
if (!entry->link) {
return entry;
}
link = phar_get_link_location(entry);
if (NULL != (link_entry = zend_hash_str_find_ptr(&(entry->phar->manifest), entry->link, strlen(entry->link))) ||
NULL != (link_entry = zend_hash_str_find_ptr(&(entry->phar->manifest), link, strlen(link)))) {
if (link != entry->link) {
efree(link);
}
return phar_get_link_source(link_entry);
} 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) /* {{{ */
{
if (follow_links && entry->link) {
phar_entry_info *link_entry = phar_get_link_source(entry);
if (link_entry && link_entry != entry) {
return phar_get_efp(link_entry, 1);
}
}
if (phar_get_fp_type(entry) == PHAR_FP) {
if (!phar_get_entrypfp(entry)) {
/* re-open just in time for cases where our refcount reached 0 on the phar archive */
phar_open_archive_fp(entry->phar);
}
return phar_get_entrypfp(entry);
} else if (phar_get_fp_type(entry) == PHAR_UFP) {
return phar_get_entrypufp(entry);
} 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, zend_off_t offset, int whence, zend_off_t position, int follow_links) /* {{{ */
{
php_stream *fp = phar_get_efp(entry, follow_links);
zend_off_t temp, eoffset;
if (!fp) {
return -1;
}
if (follow_links) {
phar_entry_info *t;
t = phar_get_link_source(entry);
if (t) {
entry = t;
}
}
if (entry->is_dir) {
return 0;
}
eoffset = phar_get_fp_offset(entry);
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;
}
if (temp > eoffset + (zend_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, size_t filename_len, char *path, size_t path_len) /* {{{ */
{
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);
if (!entry.tmp) {
entry.tmp = estrndup(filename, filename_len);
}
}
filename = entry.tmp;
/* only check openbasedir for files, not for phar streams */
if (!is_phar && php_check_open_basedir(filename)) {
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 (NULL == zend_hash_str_add_ptr(&phar->mounted_dirs, entry.filename, path_len, entry.filename)) {
/* 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 (NULL != zend_hash_str_add_mem(&phar->manifest, entry.filename, path_len, (void*)&entry, sizeof(phar_entry_info))) {
return SUCCESS;
}
efree(entry.tmp);
efree(entry.filename);
return FAILURE;
}
/* }}} */
zend_string *phar_find_in_include_path(zend_string *filename, phar_archive_data **pphar) /* {{{ */
{
zend_string *ret;
char *path, *arch, *entry, *test;
size_t arch_len, entry_len;
phar_archive_data *phar;
if (pphar) {
*pphar = NULL;
} else {
pphar = &phar;
}
if (!zend_is_executing() || !PHAR_G(cwd)) {
return NULL;
}
zend_string *fname = zend_get_executed_filename_ex();
if (!fname) {
return NULL;
}
bool is_file_a_phar_wrapper = zend_string_starts_with_literal_ci(fname, "phar://");
size_t length_phar_protocol = strlen("phar://");
if (
PHAR_G(last_phar)
&& is_file_a_phar_wrapper
&& ZSTR_LEN(fname) - length_phar_protocol >= PHAR_G(last_phar_name_len)
&& !memcmp(ZSTR_VAL(fname) + length_phar_protocol, 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 (!is_file_a_phar_wrapper || SUCCESS != phar_split_fname(ZSTR_VAL(fname), ZSTR_LEN(fname), &arch, &arch_len, &entry, &entry_len, 1, 0)) {
return NULL;
}
efree(entry);
if (*ZSTR_VAL(filename) == '.') {
size_t try_len;
if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL)) {
efree(arch);
return NULL;
}
splitted:
if (pphar) {
*pphar = phar;
}
try_len = ZSTR_LEN(filename);
test = phar_fix_filepath(estrndup(ZSTR_VAL(filename), ZSTR_LEN(filename)), &try_len, 1);
if (*test == '/') {
if (zend_hash_str_exists(&(phar->manifest), test + 1, try_len - 1)) {
ret = strpprintf(0, "phar://%s%s", arch, test);
efree(arch);
efree(test);
return ret;
}
} else {
if (zend_hash_str_exists(&(phar->manifest), test, try_len)) {
ret = strpprintf(0, "phar://%s/%s", arch, test);
efree(arch);
efree(test);
return ret;
}
}
efree(test);
}
spprintf(&path, MAXPATHLEN + 1 + strlen(PG(include_path)), "phar://%s/%s%c%s", arch, PHAR_G(cwd), DEFAULT_DIR_SEPARATOR, PG(include_path));
efree(arch);
ret = php_resolve_path(ZSTR_VAL(filename), ZSTR_LEN(filename), path);
efree(path);
if (ret && zend_string_starts_with_literal_ci(ret, "phar://")) {
/* found phar:// */
if (SUCCESS != phar_split_fname(ZSTR_VAL(ret), ZSTR_LEN(ret), &arch, &arch_len, &entry, &entry_len, 1, 0)) {
return ret;
}
*pphar = zend_hash_str_find_ptr(&(PHAR_G(phar_fname_map)), arch, arch_len);
if (!*pphar && PHAR_G(manifest_cached)) {
*pphar = zend_hash_str_find_ptr(&cached_phars, arch, arch_len);
}
efree(arch);
efree(entry);
}
return ret;
}
/* }}} */
/**
* 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, size_t fname_len, char *path, size_t path_len, const char *mode, char allow_dir, char **error, int security) /* {{{ */
{
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)) {
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)) == 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)) == 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)) {
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)) {
return FAILURE;
}
} else if (for_append) {
phar_seek_efp(entry, 0, SEEK_END, 0, 0);
}
} 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)) {
return FAILURE;
}
} else {
if (FAILURE == phar_separate_entry_fp(entry, error)) {
return FAILURE;
}
}
} else {
if (FAILURE == phar_open_entry_fp(entry, error, 1)) {
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);
if (entry->link) {
phar_entry_info *link = phar_get_link_source(entry);
if(!link) {
efree(*ret);
return FAILURE;
}
(*ret)->zero = phar_get_fp_offset(link);
} else {
(*ret)->zero = phar_get_fp_offset(entry);
}
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, size_t fname_len, char *path, size_t path_len, const char *mode, char allow_dir, char **error, int security) /* {{{ */
{
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)) {
return NULL;
}
if (FAILURE == phar_get_entry_data(&ret, fname, fname_len, path, path_len, mode, allow_dir, error, security)) {
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)) {
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 && path_len) {
etemp.filename_len--; /* strip trailing / */
path_len--;
}
phar_add_virtual_dirs(phar, path, path_len);
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 (NULL == (entry = zend_hash_str_add_mem(&phar->manifest, etemp.filename, path_len, (void*)&etemp, sizeof(phar_entry_info)))) {
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) /* {{{ */
{
if (phar_get_pharfp(phar)) {
return SUCCESS;
}
if (php_check_open_basedir(phar->fname)) {
return FAILURE;
}
phar_set_pharfp(phar, php_stream_open_wrapper(phar->fname, "rb", IGNORE_URL|STREAM_MUST_SEEK|0, NULL));
if (!phar_get_pharfp(phar)) {
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) /* {{{ */
{
phar_entry_info *link;
if (FAILURE == phar_open_entry_fp(source, error, 1)) {
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();
if (dest->fp == NULL) {
spprintf(error, 0, "phar error: unable to create temporary file");
return EOF;
}
phar_seek_efp(source, 0, SEEK_SET, 0, 1);
link = phar_get_link_source(source);
if (!link) {
link = source;
}
if (SUCCESS != php_stream_copy_to_stream_ex(phar_get_efp(link, 0), 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) /* {{{ */
{
php_stream_filter *filter;
phar_archive_data *phar = entry->phar;
char *filtername;
zend_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);
if (link_entry && link_entry != entry) {
return phar_open_entry_fp(link_entry, error, 1);
}
}
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)) {
if (FAILURE == phar_open_archive_fp(phar)) {
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);
if (FAILURE == phar_postprocess_file(&dummy, entry->crc32, error, 1)) {
return FAILURE;
}
return SUCCESS;
}
if (!phar_get_entrypufp(entry)) {
phar_set_entrypufp(entry, php_stream_fopen_tmpfile());
if (!phar_get_entrypufp(entry)) {
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);
if (FAILURE == phar_postprocess_file(&dummy, entry->crc32, error, 1)) {
return FAILURE;
}
ufp = phar_get_entrypufp(entry);
if ((filtername = phar_decompress_filter(entry, 0)) != NULL) {
filter = php_stream_filter_create(filtername, NULL, 0);
} 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);
php_stream_seek(phar_get_entrypfp(entry), phar_get_fp_offset(entry), SEEK_SET);
if (entry->uncompressed_filesize) {
if (SUCCESS != php_stream_copy_to_stream_ex(phar_get_entrypfp(entry), ufp, entry->compressed_filesize, NULL)) {
spprintf(error, 4096, "phar error: internal corruption of phar \"%s\" (actual filesize mismatch on file \"%s\")", phar->fname, entry->filename);
php_stream_filter_remove(filter, 1);
return FAILURE;
}
}
php_stream_filter_flush(filter, 1);
php_stream_flush(ufp);
php_stream_filter_remove(filter, 1);
if (php_stream_tell(ufp) - loc != (zend_off_t) entry->uncompressed_filesize) {
spprintf(error, 4096, "phar error: internal corruption of phar \"%s\" (actual filesize mismatch on file \"%s\")", phar->fname, entry->filename);
return FAILURE;
}
entry->old_flags = entry->flags;
/* this is now the new location of the file contents within this fp */
phar_set_fp_type(entry, PHAR_UFP, loc);
dummy.zero = entry->offset;
dummy.fp = ufp;
if (FAILURE == phar_postprocess_file(&dummy, entry->crc32, error, 0)) {
return FAILURE;
}
return SUCCESS;
}
/* }}} */
int phar_create_writeable_entry(phar_archive_data *phar, phar_entry_info *entry, char **error) /* {{{ */
{
if (entry->fp_type == PHAR_MOD) {
/* already newly created, truncate */
php_stream_truncate_set_size(entry->fp, 0);
entry->old_flags = entry->flags;
entry->is_modified = 1;
phar->is_modified = 1;
/* reset file size */
entry->uncompressed_filesize = 0;
entry->compressed_filesize = 0;
entry->crc32 = 0;
entry->flags = PHAR_ENT_PERM_DEF_FILE;
entry->fp_type = PHAR_MOD;
entry->offset = 0;
return SUCCESS;
}
if (error) {
*error = NULL;
}
/* open a new temp file for writing */
if (entry->link) {
efree(entry->link);
entry->link = NULL;
entry->tar_type = (entry->is_tar ? TAR_FILE : '\0');
}
entry->fp = php_stream_fopen_tmpfile();
if (!entry->fp) {
if (error) {
spprintf(error, 0, "phar error: unable to create temporary file");
}
return FAILURE;
}
entry->old_flags = entry->flags;
entry->is_modified = 1;
phar->is_modified = 1;
/* reset file size */
entry->uncompressed_filesize = 0;
entry->compressed_filesize = 0;
entry->crc32 = 0;
entry->flags = PHAR_ENT_PERM_DEF_FILE;
entry->fp_type = PHAR_MOD;
entry->offset = 0;
return SUCCESS;
}
/* }}} */
int phar_separate_entry_fp(phar_entry_info *entry, char **error) /* {{{ */
{
php_stream *fp;
phar_entry_info *link;
if (FAILURE == phar_open_entry_fp(entry, error, 1)) {
return FAILURE;
}
if (entry->fp_type == PHAR_MOD) {
return SUCCESS;
}
fp = php_stream_fopen_tmpfile();
if (fp == NULL) {
spprintf(error, 0, "phar error: unable to create temporary file");
return FAILURE;
}
phar_seek_efp(entry, 0, SEEK_SET, 0, 1);
link = phar_get_link_source(entry);
if (!link) {
link = entry;
}
if (SUCCESS != php_stream_copy_to_stream_ex(phar_get_efp(link, 0), fp, link->uncompressed_filesize, NULL)) {
if (error) {
spprintf(error, 4096, "phar error: cannot separate entry file \"%s\" contents in phar archive \"%s\" for write access", entry->filename, entry->phar->fname);
}
return FAILURE;
}
if (entry->link) {
efree(entry->link);
entry->link = NULL;
entry->tar_type = (entry->is_tar ? TAR_FILE : '\0');
}
entry->offset = 0;
entry->fp = fp;
entry->fp_type = PHAR_MOD;
entry->is_modified = 1;
return SUCCESS;
}
/* }}} */
/**
* helper function to open an internal file's fp just-in-time
*/
phar_entry_info * phar_open_jit(phar_archive_data *phar, phar_entry_info *entry, char **error) /* {{{ */
{
if (error) {
*error = NULL;
}
/* seek to start of internal file and read it */
if (FAILURE == phar_open_entry_fp(entry, error, 1)) {
return NULL;
}
if (-1 == phar_seek_efp(entry, 0, SEEK_SET, 0, 1)) {
spprintf(error, 4096, "phar error: cannot seek to start of file \"%s\" in phar \"%s\"", entry->filename, phar->fname);
return NULL;
}
return entry;
}
/* }}} */
PHP_PHAR_API int phar_resolve_alias(char *alias, size_t alias_len, char **filename, size_t *filename_len) /* {{{ */ {
phar_archive_data *fd_ptr;
if (HT_IS_INITIALIZED(&PHAR_G(phar_alias_map))
&& NULL != (fd_ptr = zend_hash_str_find_ptr(&(PHAR_G(phar_alias_map)), alias, alias_len))) {
*filename = fd_ptr->fname;
*filename_len = fd_ptr->fname_len;
return SUCCESS;
}
return FAILURE;
}
/* }}} */
int phar_free_alias(phar_archive_data *phar, char *alias, size_t alias_len) /* {{{ */
{
if (phar->refcount || phar->is_persistent) {
return FAILURE;
}
/* this archive has no open references, so emit a notice and remove it */
if (zend_hash_str_del(&(PHAR_G(phar_fname_map)), phar->fname, phar->fname_len) != SUCCESS) {
return FAILURE;
}
/* invalidate phar cache */
PHAR_G(last_phar) = NULL;
PHAR_G(last_phar_name) = PHAR_G(last_alias) = NULL;
return SUCCESS;
}
/* }}} */
/**
* Looks up a phar archive in the filename map, connecting it to the alias
* (if any) or returns null
*/
int phar_get_archive(phar_archive_data **archive, char *fname, size_t fname_len, char *alias, size_t alias_len, char **error) /* {{{ */
{
phar_archive_data *fd, *fd_ptr;
char *my_realpath, *save;
size_t save_len;
phar_request_initialize();
if (error) {
*error = NULL;
}
*archive = NULL;
if (PHAR_G(last_phar) && fname_len == PHAR_G(last_phar_name_len) && !memcmp(fname, PHAR_G(last_phar_name), fname_len)) {
*archive = PHAR_G(last_phar);
if (alias && alias_len) {
if (!PHAR_G(last_phar)->is_temporary_alias && (alias_len != PHAR_G(last_phar)->alias_len || memcmp(PHAR_G(last_phar)->alias, alias, alias_len))) {
if (error) {
spprintf(error, 0, "alias \"%s\" is already used for archive \"%s\" cannot be overloaded with \"%s\"", alias, PHAR_G(last_phar)->fname, fname);
}
*archive = NULL;
return FAILURE;
}
if (PHAR_G(last_phar)->alias_len && NULL != (fd_ptr = zend_hash_str_find_ptr(&(PHAR_G(phar_alias_map)), PHAR_G(last_phar)->alias, PHAR_G(last_phar)->alias_len))) {
zend_hash_str_del(&(PHAR_G(phar_alias_map)), PHAR_G(last_phar)->alias, PHAR_G(last_phar)->alias_len);
}
zend_hash_str_add_ptr(&(PHAR_G(phar_alias_map)), alias, alias_len, *archive);
PHAR_G(last_alias) = alias;
PHAR_G(last_alias_len) = alias_len;
}
return SUCCESS;
}