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https://github.com/php/php-src.git
synced 2025-01-27 14:13:41 +08:00
- Use temp streams internally instead of memory to reduce memory usage
# Internally we try to use only one temp stream if possible by stoing # the temp stream in the manifest entry and transferring ownership upon # usage/close. If a particular file gets opened twice in parallel we open # a second temp stream nonetheless.
This commit is contained in:
Marcus Boerger
parent
71af00ec47
commit
abd2aeb1cd
187
ext/phar/phar.c
187
ext/phar/phar.c
@ -51,7 +51,7 @@ typedef struct _phar_manifest_entry {
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php_uint32 offset_within_phar;
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php_uint32 compressed_filesize;
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zend_bool crc_checked;
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char *filedata;
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php_stream *fp;
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} phar_manifest_entry;
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/* information about a phar file */
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@ -68,8 +68,8 @@ typedef struct _phar_file_data {
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/* stream access data for one file entry in a phar file */
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typedef struct _phar_internal_file_data {
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phar_file_data *phar;
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long pointer; /* relative position within file data */
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phar_file_data *phar;
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php_stream *fp;
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phar_manifest_entry *internal_file;
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} phar_internal_file_data;
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@ -108,9 +108,6 @@ static void destroy_phar_manifest(void *pDest) /* {{{ */
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{
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phar_manifest_entry *entry = (phar_manifest_entry *)pDest;
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if (entry->filedata) {
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efree(entry->filedata);
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}
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efree(entry->filename);
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}
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/* }}} */
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@ -127,7 +124,13 @@ static phar_internal_file_data *phar_get_filedata(char *alias, char *path TSRMLS
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ret = (phar_internal_file_data *) emalloc(sizeof(phar_internal_file_data));
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ret->phar = phar;
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ret->internal_file = internal_file;
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ret->pointer = 0;
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if (internal_file->fp) {
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/* transfer ownership */
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ret->fp = internal_file->fp;
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internal_file->fp = 0;
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} else {
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ret->fp = 0;
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}
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}
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}
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return ret;
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@ -172,7 +175,7 @@ PHP_METHOD(Phar, canCompress)
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buffer += 4
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#else
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# define PHAR_GET_VAL(buffer, var) \
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var = *(unsigned int*)(buffer); \
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var = *(php_uint32*)(buffer); \
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buffer += 4
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#endif
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@ -264,11 +267,11 @@ static int phar_open_file(php_stream *fp, char *fname, int fname_len, char *alia
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PHAR_GET_VAL(buffer, entry.timestamp);
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PHAR_GET_VAL(buffer, entry.offset_within_phar);
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PHAR_GET_VAL(buffer, entry.compressed_filesize);
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/* if (entry.uncompressed_filesize != entry.compressed_filesize) {
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if (entry.uncompressed_filesize + 8 != entry.compressed_filesize) {
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compressed = 1;
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}*/
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}
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entry.crc_checked = 0;
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entry.filedata = NULL;
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entry.fp = NULL;
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if (entry.compressed_filesize < 9) {
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MAPPHAR_FAIL("internal corruption of phar \"%s\" (file size in phar is not large enough)")
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}
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@ -519,26 +522,24 @@ php_stream_wrapper php_stream_phar_wrapper = {
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0 /* is_url */
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};
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static int phar_postprocess_file(char *buffer, php_uint32 nr, unsigned long crc32, zend_bool read) /* {{{ */
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static int phar_postprocess_file(php_stream_wrapper *wrapper, int options, phar_internal_file_data *idata, unsigned long crc32 TSRMLS_DC) /* {{{ */
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{
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unsigned int crc = ~0;
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php_uint32 actual_length;
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int len = 0;
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int len = idata->internal_file->uncompressed_filesize;
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char c;
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if (read) {
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PHAR_GET_VAL(buffer, crc32);
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PHAR_GET_VAL(buffer, actual_length);
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if (actual_length != nr) {
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return -2;
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}
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}
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for (len += nr; nr--; ++buffer) {
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CRC32(crc, *buffer);
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php_stream_seek(idata->fp, 0, SEEK_SET);
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while (len--) {
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php_stream_read(idata->fp, &c, 1);
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CRC32(crc, c);
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}
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php_stream_seek(idata->fp, 0, SEEK_SET);
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if (~crc == crc32) {
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return 0;
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return SUCCESS;
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} else {
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return -1;
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: internal corruption of phar \"%s\" (crc32 mismatch on file \"%s\")", idata->phar->filename, idata->internal_file->filename);
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return FAILURE;
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}
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}
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/* }}} */
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@ -550,6 +551,7 @@ static php_stream * php_stream_phar_url_wrapper(php_stream_wrapper *wrapper, cha
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char *internal_file;
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char *buffer;
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char *filedata;
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char tmpbuf[8];
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php_url *resource = NULL;
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php_stream *fp;
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int status;
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@ -597,16 +599,16 @@ static php_stream * php_stream_phar_url_wrapper(php_stream_wrapper *wrapper, cha
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}
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#if MBO_0
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fprintf(stderr, "Pharname: %s\n", idata->phar->filename);
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fprintf(stderr, "Filename: %s\n", internal_file);
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fprintf(stderr, "Entry: %s\n", idata->internal_file->filename);
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fprintf(stderr, "Pharname: %s\n", idata->phar->filename);
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fprintf(stderr, "Filename: %s\n", internal_file);
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fprintf(stderr, "Entry: %s\n", idata->internal_file->filename);
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fprintf(stderr, "Size: %u\n", idata->internal_file->uncompressed_filesize);
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fprintf(stderr, "Offset: %u\n", idata->internal_file->offset_within_phar);
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fprintf(stderr, "Cached: %s\n", idata->internal_file->filedata ? "yes" : "no");
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fprintf(stderr, "Cached: %s\n", idata->internal_file->filedata ? "yes" : "no");
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#endif
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/* do we have the data already? */
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if (idata->internal_file->filedata) {
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if (idata->fp) {
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stream = php_stream_alloc(&phar_ops, idata, NULL, mode);
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efree(internal_file);
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return stream;
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@ -670,7 +672,6 @@ static php_stream * php_stream_phar_url_wrapper(php_stream_wrapper *wrapper, cha
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: internal corruption of phar \"%s\" (corrupted zlib compression of file \"%s\")", idata->phar->filename, internal_file);
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efree(s1);
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efree(savebuf);
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efree(filedata);
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efree(idata);
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efree(internal_file);
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return NULL;
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@ -717,63 +718,52 @@ static php_stream * php_stream_phar_url_wrapper(php_stream_wrapper *wrapper, cha
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efree(idata);
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return NULL;
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}
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/* need to copy filedata to stream now */
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idata->fp = php_stream_temp_open(0, PHP_STREAM_MAX_MEM, filedata, actual_length);
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efree(filedata);
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/* check crc32/filesize */
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if (!idata->internal_file->crc_checked) {
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status = phar_postprocess_file(filedata, idata->internal_file->uncompressed_filesize, crc32, 0);
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if (-1 == status) {
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: internal corruption of phar \"%s\" (crc32 mismatch on file \"%s\")", idata->phar->filename, internal_file);
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efree(filedata);
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efree(idata);
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efree(internal_file);
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return NULL;
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}
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if (-2 == status) {
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: internal corruption of phar \"%s\" (filesize mismatch on file \"%s\")", idata->phar->filename, internal_file);
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efree(filedata);
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efree(idata);
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efree(internal_file);
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return NULL;
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}
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idata->internal_file->crc_checked = 1;
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if (!idata->internal_file->crc_checked
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&& phar_postprocess_file(wrapper, options, idata, crc32 TSRMLS_CC) != SUCCESS) {
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efree(idata);
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efree(internal_file);
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}
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idata->internal_file->crc_checked = 1;
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#else
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "zlib extension must be enabled for compressed .phar files");
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efree(internal_file);
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return NULL;
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#endif
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} else { /* from here is for non-compressed */
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filedata = (char *) emalloc(idata->internal_file->compressed_filesize);
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if (idata->internal_file->compressed_filesize !=
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php_stream_read(fp, filedata, idata->internal_file->compressed_filesize)) {
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buffer = &tmpbuf[0];
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php_stream_read(fp, buffer, 8);
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PHAR_GET_VAL(buffer, crc32);
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PHAR_GET_VAL(buffer, actual_length);
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if (actual_length != idata->internal_file->uncompressed_filesize) {
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: internal corruption of phar \"%s\" (actual filesize mismatch on file \"%s\")", idata->phar->filename, internal_file);
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efree(filedata);
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efree(idata);
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efree(internal_file);
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return NULL;
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}
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/* bypass to temp stream */
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idata->fp = php_stream_temp_new();
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if (php_stream_copy_to_stream(fp, idata->fp, actual_length) != actual_length) {
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: internal corruption of phar \"%s\" (actual filesize mismatch on file \"%s\")", idata->phar->filename, internal_file);
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php_stream_close(idata->fp);
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efree(idata);
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efree(internal_file);
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return NULL;
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}
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/* check length, crc32 */
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if (!idata->internal_file->crc_checked) {
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status = phar_postprocess_file(filedata, idata->internal_file->uncompressed_filesize, 0, 1);
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if (-1 == status) {
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: internal corruption of phar \"%s\" (crc32 mismatch on file \"%s\")", idata->phar->filename, internal_file);
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efree(filedata);
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efree(idata);
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efree(internal_file);
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return NULL;
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}
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if (-2 == status) {
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php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: internal corruption of phar \"%s\" (filesize mismatch on file \"%s\")", idata->phar->filename, internal_file);
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efree(filedata);
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efree(idata);
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efree(internal_file);
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return NULL;
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}
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idata->internal_file->crc_checked = 1;
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if (!idata->internal_file->crc_checked
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&& phar_postprocess_file(wrapper, options, idata, crc32 TSRMLS_CC) != SUCCESS) {
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php_stream_close(idata->fp);
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efree(idata);
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efree(internal_file);
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return NULL;
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}
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memmove(filedata, filedata + 8, idata->internal_file->uncompressed_filesize);
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idata->internal_file->crc_checked = 1;
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}
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idata->internal_file->filedata = filedata;
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stream = php_stream_alloc(&phar_ops, idata, NULL, mode);
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efree(internal_file);
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return stream;
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@ -784,6 +774,14 @@ static int phar_close(php_stream *stream, int close_handle TSRMLS_DC) /* {{{ */
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{
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phar_internal_file_data *data = (phar_internal_file_data *)stream->abstract;
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if (data->fp) {
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if (data->internal_file->fp) {
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php_stream_close(data->fp);
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} else {
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data->internal_file->fp = data->fp;
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}
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}
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efree(data);
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return 0;
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}
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@ -834,20 +832,9 @@ static int phar_seekdir(php_stream *stream, off_t offset, int whence, off_t *new
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static size_t phar_read(php_stream *stream, char *buf, size_t count TSRMLS_DC) /* {{{ */
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{
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size_t to_read;
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phar_internal_file_data *data = (phar_internal_file_data *)stream->abstract;
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to_read = MIN(data->internal_file->uncompressed_filesize - data->pointer, count);
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if (to_read == 0) {
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if (count != 0) {
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stream->eof = 1;
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}
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return 0;
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}
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memcpy(buf, data->internal_file->filedata + data->pointer, to_read);
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data->pointer += to_read;
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return to_read;
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return php_stream_read(data->fp, buf, count);
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}
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/* }}} */
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@ -881,36 +868,10 @@ static size_t phar_readdir(php_stream *stream, char *buf, size_t count TSRMLS_DC
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static int phar_seek(php_stream *stream, off_t offset, int whence, off_t *newoffset TSRMLS_DC) /* {{{ */
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{
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phar_internal_file_data *data = (phar_internal_file_data *)stream->abstract;
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switch (whence) {
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case SEEK_SET :
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if (offset < 0 || offset > data->internal_file->uncompressed_filesize) {
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*newoffset = (off_t) - 1;
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return -1;
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}
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data->pointer = offset;
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*newoffset = offset;
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return 0;
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case SEEK_CUR :
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if (data->pointer + offset < 0 || data->pointer + offset
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> data->internal_file->uncompressed_filesize) {
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*newoffset = (off_t) - 1;
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return -1;
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}
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data->pointer += offset;
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*newoffset = data->pointer;
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return 0;
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case SEEK_END :
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if (offset > 0 || -1 * offset > data->internal_file->uncompressed_filesize) {
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*newoffset = (off_t) - 1;
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return -1;
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}
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data->pointer = data->internal_file->uncompressed_filesize + offset;
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*newoffset = data->pointer;
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return 0;
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default :
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*newoffset = (off_t) - 1;
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return -1;
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}
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int res = php_stream_seek(data->fp, offset, whence);
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*newoffset = php_stream_tell(data->fp);
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return res;
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}
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/* }}} */
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@ -17,4 +17,4 @@ echo file_get_contents('phar://hio/a');
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--CLEAN--
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<?php unlink(dirname(__FILE__) . '/' . basename(__FILE__, '.clean.php') . '.phar.php'); ?>
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--EXPECTF--
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Warning: file_get_contents(phar://hio/a): failed to open stream: phar error: internal corruption of phar "%s" (filesize mismatch on file "a") in %s on line %d
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Warning: file_get_contents(phar://hio/a): failed to open stream: phar error: internal corruption of phar "%s" (actual filesize mismatch on file "a") in %s on line %d
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