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-rw-r--r--minzip/DirUtil.c4
-rw-r--r--minzip/Hash.c11
-rw-r--r--minzip/Zip.c223
-rw-r--r--minzip/Zip.h74
4 files changed, 73 insertions, 239 deletions
diff --git a/minzip/DirUtil.c b/minzip/DirUtil.c
index fe2c880ac..97cb2e0ee 100644
--- a/minzip/DirUtil.c
+++ b/minzip/DirUtil.c
@@ -85,7 +85,7 @@ dirCreateHierarchy(const char *path, int mode,
c--;
}
if (c == cpath) {
-//xxx test this path
+ //xxx test this path
/* No directory component. Act like the path was empty.
*/
errno = ENOENT;
@@ -206,7 +206,7 @@ dirUnlinkHierarchy(const char *path)
/* recurse over components */
errno = 0;
while ((de = readdir(dir)) != NULL) {
-//TODO: don't blow the stack
+ //TODO: don't blow the stack
char dn[PATH_MAX];
if (!strcmp(de->d_name, "..") || !strcmp(de->d_name, ".")) {
continue;
diff --git a/minzip/Hash.c b/minzip/Hash.c
index 8c6ca9bc2..8f8ed68e5 100644
--- a/minzip/Hash.c
+++ b/minzip/Hash.c
@@ -140,7 +140,6 @@ static bool resizeHash(HashTable* pHashTable, int newSize)
int i;
assert(countTombStones(pHashTable) == pHashTable->numDeadEntries);
- //LOGI("before: dead=%d\n", pHashTable->numDeadEntries);
pNewEntries = (HashEntry*) calloc(newSize, sizeof(HashTable));
if (pNewEntries == NULL)
@@ -196,7 +195,6 @@ void* mzHashTableLookup(HashTable* pHashTable, unsigned int itemHash, void* item
(*cmpFunc)(pEntry->data, item) == 0)
{
/* match */
- //LOGD("+++ match on entry %d\n", pEntry - pHashTable->pEntries);
break;
}
@@ -206,8 +204,6 @@ void* mzHashTableLookup(HashTable* pHashTable, unsigned int itemHash, void* item
break; /* edge case - single-entry table */
pEntry = pHashTable->pEntries;
}
-
- //LOGI("+++ look probing %d...\n", pEntry - pHashTable->pEntries);
}
if (pEntry->data == NULL) {
@@ -228,10 +224,6 @@ void* mzHashTableLookup(HashTable* pHashTable, unsigned int itemHash, void* item
abort();
}
/* note "pEntry" is now invalid */
- } else {
- //LOGW("okay %d/%d/%d\n",
- // pHashTable->numEntries, pHashTable->tableSize,
- // (pHashTable->tableSize * LOAD_NUMER) / LOAD_DENOM);
}
/* full table is bad -- search for nonexistent never halts */
@@ -264,7 +256,6 @@ bool mzHashTableRemove(HashTable* pHashTable, unsigned int itemHash, void* item)
pEnd = &pHashTable->pEntries[pHashTable->tableSize];
while (pEntry->data != NULL) {
if (pEntry->data == item) {
- //LOGI("+++ stepping on entry %d\n", pEntry - pHashTable->pEntries);
pEntry->data = HASH_TOMBSTONE;
pHashTable->numEntries--;
pHashTable->numDeadEntries++;
@@ -277,8 +268,6 @@ bool mzHashTableRemove(HashTable* pHashTable, unsigned int itemHash, void* item)
break; /* edge case - single-entry table */
pEntry = pHashTable->pEntries;
}
-
- //LOGI("+++ del probing %d...\n", pEntry - pHashTable->pEntries);
}
return false;
diff --git a/minzip/Zip.c b/minzip/Zip.c
index 70aff00cd..d3ff79be6 100644
--- a/minzip/Zip.c
+++ b/minzip/Zip.c
@@ -327,10 +327,6 @@ static bool parseZipArchive(ZipArchive* pArchive)
#else
pEntry = &pArchive->pEntries[i];
#endif
-
- //LOGI("%d: localHdr=%d fnl=%d el=%d cl=%d\n",
- // i, localHdrOffset, fileNameLen, extraLen, commentLen);
-
pEntry->fileNameLen = fileNameLen;
pEntry->fileName = fileName;
@@ -488,7 +484,7 @@ const ZipEntry* mzFindZipEntry(const ZipArchive* pArchive,
/*
* Return true if the entry is a symbolic link.
*/
-bool mzIsZipEntrySymlink(const ZipEntry* pEntry)
+static bool mzIsZipEntrySymlink(const ZipEntry* pEntry)
{
if ((pEntry->versionMadeBy & 0xff00) == CENVEM_UNIX) {
return S_ISLNK(pEntry->externalFileAttributes >> 16);
@@ -632,30 +628,6 @@ static bool crcProcessFunction(const unsigned char *data, int dataLen,
return true;
}
-/*
- * Check the CRC on this entry; return true if it is correct.
- * May do other internal checks as well.
- */
-bool mzIsZipEntryIntact(const ZipArchive *pArchive, const ZipEntry *pEntry)
-{
- unsigned long crc;
- bool ret;
-
- crc = crc32(0L, Z_NULL, 0);
- ret = mzProcessZipEntryContents(pArchive, pEntry, crcProcessFunction,
- (void *)&crc);
- if (!ret) {
- LOGE("Can't calculate CRC for entry\n");
- return false;
- }
- if (crc != (unsigned long)pEntry->crc32) {
- LOGW("CRC for entry %.*s (0x%08lx) != expected (0x%08lx)\n",
- pEntry->fileNameLen, pEntry->fileName, crc, pEntry->crc32);
- return false;
- }
- return true;
-}
-
typedef struct {
char *buf;
int bufLen;
@@ -737,23 +709,6 @@ bool mzExtractZipEntryToFile(const ZipArchive *pArchive,
return true;
}
-/*
- * Obtain a pointer to the in-memory representation of a stored entry.
- */
-bool mzGetStoredEntry(const ZipArchive *pArchive,
- const ZipEntry *pEntry, unsigned char **addr, size_t *length)
-{
- if (pEntry->compression != STORED) {
- LOGE("Can't getStoredEntry for '%s'; not stored\n",
- pEntry->fileName);
- return false;
- }
-
- *addr = pArchive->addr + pEntry->offset;
- *length = pEntry->uncompLen;
- return true;
-}
-
typedef struct {
unsigned char* buffer;
long len;
@@ -873,7 +828,7 @@ static const char *targetEntryPath(MzPathHelper *helper, ZipEntry *pEntry)
*/
bool mzExtractRecursive(const ZipArchive *pArchive,
const char *zipDir, const char *targetDir,
- int flags, const struct utimbuf *timestamp,
+ const struct utimbuf *timestamp,
void (*callback)(const char *fn, void *), void *cookie,
struct selabel_handle *sehnd)
{
@@ -923,8 +878,8 @@ bool mzExtractRecursive(const ZipArchive *pArchive,
/* Walk through the entries and extract anything whose path begins
* with zpath.
-//TODO: since the entries are sorted, binary search for the first match
-// and stop after the first non-match.
+ //TODO: since the entries are sorted, binary search for the first match
+ // and stop after the first non-match.
*/
unsigned int i;
bool seenMatch = false;
@@ -933,10 +888,10 @@ bool mzExtractRecursive(const ZipArchive *pArchive,
for (i = 0; i < pArchive->numEntries; i++) {
ZipEntry *pEntry = pArchive->pEntries + i;
if (pEntry->fileNameLen < zipDirLen) {
-//TODO: look out for a single empty directory entry that matches zpath, but
-// missing the trailing slash. Most zip files seem to include
-// the trailing slash, but I think it's legal to leave it off.
-// e.g., zpath "a/b/", entry "a/b", with no children of the entry.
+ //TODO: look out for a single empty directory entry that matches zpath, but
+ // missing the trailing slash. Most zip files seem to include
+ // the trailing slash, but I think it's legal to leave it off.
+ // e.g., zpath "a/b/", entry "a/b", with no children of the entry.
/* No chance of matching.
*/
#if SORT_ENTRIES
@@ -977,30 +932,19 @@ bool mzExtractRecursive(const ZipArchive *pArchive,
break;
}
- /* With DRY_RUN set, invoke the callback but don't do anything else.
- */
- if (flags & MZ_EXTRACT_DRY_RUN) {
- if (callback != NULL) callback(targetFile, cookie);
- continue;
- }
-
- /* Create the file or directory.
- */
#define UNZIP_DIRMODE 0755
#define UNZIP_FILEMODE 0644
- if (pEntry->fileName[pEntry->fileNameLen-1] == '/') {
- if (!(flags & MZ_EXTRACT_FILES_ONLY)) {
- int ret = dirCreateHierarchy(
- targetFile, UNZIP_DIRMODE, timestamp, false, sehnd);
- if (ret != 0) {
- LOGE("Can't create containing directory for \"%s\": %s\n",
- targetFile, strerror(errno));
- ok = false;
- break;
- }
- LOGD("Extracted dir \"%s\"\n", targetFile);
- }
- } else {
+ /*
+ * Create the file or directory. We ignore directory entries
+ * because we recursively create paths to each file entry we encounter
+ * in the zip archive anyway.
+ *
+ * NOTE: A "directory entry" in a zip archive is just a zero length
+ * entry that ends in a "/". They're not mandatory and many tools get
+ * rid of them. We need to process them only if we want to preserve
+ * empty directories from the archive.
+ */
+ if (pEntry->fileName[pEntry->fileNameLen-1] != '/') {
/* This is not a directory. First, make sure that
* the containing directory exists.
*/
@@ -1013,97 +957,62 @@ bool mzExtractRecursive(const ZipArchive *pArchive,
break;
}
- /* With FILES_ONLY set, we need to ignore metadata entirely,
- * so treat symlinks as regular files.
+ /*
+ * The entry is a regular file or a symlink. Open the target for writing.
+ *
+ * TODO: This behavior for symlinks seems rather bizarre. For a
+ * symlink foo/bar/baz -> foo/tar/taz, we will create a file called
+ * "foo/bar/baz" whose contents are the literal "foo/tar/taz". We
+ * warn about this for now and preserve older behavior.
*/
- if (!(flags & MZ_EXTRACT_FILES_ONLY) && mzIsZipEntrySymlink(pEntry)) {
- /* The entry is a symbolic link.
- * The relative target of the symlink is in the
- * data section of this entry.
- */
- if (pEntry->uncompLen == 0) {
- LOGE("Symlink entry \"%s\" has no target\n",
- targetFile);
- ok = false;
- break;
- }
- char *linkTarget = malloc(pEntry->uncompLen + 1);
- if (linkTarget == NULL) {
- ok = false;
- break;
- }
- ok = mzReadZipEntry(pArchive, pEntry, linkTarget,
- pEntry->uncompLen);
- if (!ok) {
- LOGE("Can't read symlink target for \"%s\"\n",
- targetFile);
- free(linkTarget);
- break;
- }
- linkTarget[pEntry->uncompLen] = '\0';
-
- /* Make the link.
- */
- ret = symlink(linkTarget, targetFile);
- if (ret != 0) {
- LOGE("Can't symlink \"%s\" to \"%s\": %s\n",
- targetFile, linkTarget, strerror(errno));
- free(linkTarget);
- ok = false;
- break;
- }
- LOGD("Extracted symlink \"%s\" -> \"%s\"\n",
- targetFile, linkTarget);
- free(linkTarget);
- } else {
- /* The entry is a regular file.
- * Open the target for writing.
- */
-
- char *secontext = NULL;
+ if (mzIsZipEntrySymlink(pEntry)) {
+ LOGE("Symlink entry \"%.*s\" will be output as a regular file.",
+ pEntry->fileNameLen, pEntry->fileName);
+ }
- if (sehnd) {
- selabel_lookup(sehnd, &secontext, targetFile, UNZIP_FILEMODE);
- setfscreatecon(secontext);
- }
+ char *secontext = NULL;
- int fd = open(targetFile, O_CREAT|O_WRONLY|O_TRUNC|O_SYNC
- , UNZIP_FILEMODE);
+ if (sehnd) {
+ selabel_lookup(sehnd, &secontext, targetFile, UNZIP_FILEMODE);
+ setfscreatecon(secontext);
+ }
- if (secontext) {
- freecon(secontext);
- setfscreatecon(NULL);
- }
+ int fd = open(targetFile, O_CREAT|O_WRONLY|O_TRUNC|O_SYNC,
+ UNZIP_FILEMODE);
- if (fd < 0) {
- LOGE("Can't create target file \"%s\": %s\n",
- targetFile, strerror(errno));
- ok = false;
- break;
- }
+ if (secontext) {
+ freecon(secontext);
+ setfscreatecon(NULL);
+ }
- bool ok = mzExtractZipEntryToFile(pArchive, pEntry, fd);
- if (ok) {
- ok = (fsync(fd) == 0);
- }
- if (close(fd) != 0) {
- ok = false;
- }
- if (!ok) {
- LOGE("Error extracting \"%s\"\n", targetFile);
- ok = false;
- break;
- }
+ if (fd < 0) {
+ LOGE("Can't create target file \"%s\": %s\n",
+ targetFile, strerror(errno));
+ ok = false;
+ break;
+ }
- if (timestamp != NULL && utime(targetFile, timestamp)) {
- LOGE("Error touching \"%s\"\n", targetFile);
- ok = false;
- break;
- }
+ bool ok = mzExtractZipEntryToFile(pArchive, pEntry, fd);
+ if (ok) {
+ ok = (fsync(fd) == 0);
+ }
+ if (close(fd) != 0) {
+ ok = false;
+ }
+ if (!ok) {
+ LOGE("Error extracting \"%s\"\n", targetFile);
+ ok = false;
+ break;
+ }
- LOGV("Extracted file \"%s\"\n", targetFile);
- ++extractCount;
+ if (timestamp != NULL && utime(targetFile, timestamp)) {
+ LOGE("Error touching \"%s\"\n", targetFile);
+ ok = false;
+ break;
}
+
+ LOGV("Extracted file \"%s\"\n", targetFile);
+ ++extractCount;
}
if (callback != NULL) callback(targetFile, cookie);
diff --git a/minzip/Zip.h b/minzip/Zip.h
index 2054b38a4..86d8db597 100644
--- a/minzip/Zip.h
+++ b/minzip/Zip.h
@@ -85,56 +85,12 @@ void mzCloseZipArchive(ZipArchive* pArchive);
const ZipEntry* mzFindZipEntry(const ZipArchive* pArchive,
const char* entryName);
-/*
- * Get the number of entries in the Zip archive.
- */
-INLINE unsigned int mzZipEntryCount(const ZipArchive* pArchive) {
- return pArchive->numEntries;
-}
-
-/*
- * Get an entry by index. Returns NULL if the index is out-of-bounds.
- */
-INLINE const ZipEntry*
-mzGetZipEntryAt(const ZipArchive* pArchive, unsigned int index)
-{
- if (index < pArchive->numEntries) {
- return pArchive->pEntries + index;
- }
- return NULL;
-}
-
-/*
- * Get the index number of an entry in the archive.
- */
-INLINE unsigned int
-mzGetZipEntryIndex(const ZipArchive *pArchive, const ZipEntry *pEntry) {
- return pEntry - pArchive->pEntries;
-}
-
-/*
- * Simple accessors.
- */
-INLINE UnterminatedString mzGetZipEntryFileName(const ZipEntry* pEntry) {
- UnterminatedString ret;
- ret.str = pEntry->fileName;
- ret.len = pEntry->fileNameLen;
- return ret;
-}
INLINE long mzGetZipEntryOffset(const ZipEntry* pEntry) {
return pEntry->offset;
}
INLINE long mzGetZipEntryUncompLen(const ZipEntry* pEntry) {
return pEntry->uncompLen;
}
-INLINE long mzGetZipEntryModTime(const ZipEntry* pEntry) {
- return pEntry->modTime;
-}
-INLINE long mzGetZipEntryCrc32(const ZipEntry* pEntry) {
- return pEntry->crc32;
-}
-bool mzIsZipEntrySymlink(const ZipEntry* pEntry);
-
/*
* Type definition for the callback function used by
@@ -164,12 +120,6 @@ bool mzReadZipEntry(const ZipArchive* pArchive, const ZipEntry* pEntry,
char* buf, int bufLen);
/*
- * Check the CRC on this entry; return true if it is correct.
- * May do other internal checks as well.
- */
-bool mzIsZipEntryIntact(const ZipArchive *pArchive, const ZipEntry *pEntry);
-
-/*
* Inflate and write an entry to a file.
*/
bool mzExtractZipEntryToFile(const ZipArchive *pArchive,
@@ -183,20 +133,12 @@ bool mzExtractZipEntryToBuffer(const ZipArchive *pArchive,
const ZipEntry *pEntry, unsigned char* buffer);
/*
- * Return a pointer and length for a given entry. The returned region
- * should be valid until pArchive is closed, and should be treated as
- * read-only.
- *
- * Only makes sense for entries which are stored (ie, not compressed).
- * No guarantees are made regarding alignment of the returned pointer.
- */
-bool mzGetStoredEntry(const ZipArchive *pArchive,
- const ZipEntry* pEntry, unsigned char **addr, size_t *length);
-
-/*
- * Inflate all entries under zipDir to the directory specified by
+ * Inflate all files under zipDir to the directory specified by
* targetDir, which must exist and be a writable directory.
*
+ * Directory entries and symlinks are not extracted.
+ *
+ *
* The immediate children of zipDir will become the immediate
* children of targetDir; e.g., if the archive contains the entries
*
@@ -211,21 +153,15 @@ bool mzGetStoredEntry(const ZipArchive *pArchive,
* /tmp/two
* /tmp/d/three
*
- * flags is zero or more of the following:
- *
- * MZ_EXTRACT_FILES_ONLY - only unpack files, not directories or symlinks
- * MZ_EXTRACT_DRY_RUN - don't do anything, but do invoke the callback
- *
* If timestamp is non-NULL, file timestamps will be set accordingly.
*
* If callback is non-NULL, it will be invoked with each unpacked file.
*
* Returns true on success, false on failure.
*/
-enum { MZ_EXTRACT_FILES_ONLY = 1, MZ_EXTRACT_DRY_RUN = 2 };
bool mzExtractRecursive(const ZipArchive *pArchive,
const char *zipDir, const char *targetDir,
- int flags, const struct utimbuf *timestamp,
+ const struct utimbuf *timestamp,
void (*callback)(const char *fn, void*), void *cookie,
struct selabel_handle *sehnd);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 22:18:39 +0100