diff options
Diffstat (limited to 'minzip/Zip.c')
| -rw-r--r-- | minzip/Zip.c | 38 |
1 files changed, 27 insertions, 11 deletions
diff --git a/minzip/Zip.c b/minzip/Zip.c index 100c833..ead8993 100644 --- a/minzip/Zip.c +++ b/minzip/Zip.c @@ -41,7 +41,7 @@ enum { CENSIZ = 20, CENLEN = 24, CENNAM = 28, - CENEXT = 30, + CENEXT = 30, CENCOM = 32, CENDSK = 34, CENATT = 36, @@ -66,13 +66,13 @@ enum { LOCSIG = 0x04034b50, // PK34 LOCHDR = 30, - + LOCVER = 4, LOCFLG = 6, LOCHOW = 8, LOCTIM = 10, LOCCRC = 14, - LOCSIZ = 18, + LOCSIZ = 18, LOCLEN = 22, LOCNAM = 26, LOCEXT = 28, @@ -757,7 +757,7 @@ bool mzReadZipEntry(const ZipArchive* pArchive, const ZipEntry* pEntry, { CopyProcessArgs args; bool ret; - + args.buf = buf; args.bufLen = bufLen; ret = mzProcessZipEntryContents(pArchive, pEntry, copyProcessFunction, @@ -772,13 +772,29 @@ bool mzReadZipEntry(const ZipArchive* pArchive, const ZipEntry* pEntry, static bool writeProcessFunction(const unsigned char *data, int dataLen, void *fd) { - ssize_t n = write((int)fd, data, dataLen); - if (n != dataLen) { - LOGE("Can't write %d bytes (only %ld) from zip file: %s\n", - dataLen, n, strerror(errno)); - return false; - } - return true; + int zeroWrites = 0; + ssize_t soFar = 0; + do { + ssize_t n = write((int)fd, data+soFar, dataLen-soFar); + if (n < 0) { + LOGE("Error writing %ld bytes from zip file: %s\n", + dataLen-soFar, strerror(errno)); + return false; + } else if (n > 0) { + soFar += n; + if (soFar == dataLen) return true; + if (soFar > dataLen) { + LOGE("write overrun? (%ld bytes instead of %d)\n", + soFar, dataLen); + return false; + } + zeroWrites = 0; + } else { + ++zeroWrites; + } + } while (zeroWrites < 5); + LOGE("too many consecutive zero-length writes\n"); + return false; } /* |