1 files changed, 42 insertions, 76 deletions
diff --git a/src/Common/zlib/gzwrite.c b/src/Common/zlib/gzwrite.c
index c7b5651d..435b4621 100644
--- a/src/Common/zlib/gzwrite.c
+++ b/src/Common/zlib/gzwrite.c
@@ -1,23 +1,15 @@
 /* gzwrite.c -- zlib functions for writing gzip files
- * Copyright (C) 2004-2017 Mark Adler
+ * Copyright (C) 2004-2019 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 #include "gzguts.h"
 
-/* Local functions */
-local int gz_init OF((gz_statep));
-local int gz_comp OF((gz_statep, int));
-local int gz_zero OF((gz_statep, z_off64_t));
-local z_size_t gz_write OF((gz_statep, voidpc, z_size_t));
-
 /* Initialize state for writing a gzip file.  Mark initialization by setting
    state->size to non-zero.  Return -1 on a memory allocation failure, or 0 on
    success. */
-local int gz_init(state)
-    gz_statep state;
-{
+local int gz_init(gz_statep state) {
     int ret;
     z_streamp strm = &(state->strm);
 
     /* allocate input buffer (double size for gzprintf) */
@@ -69,12 +61,9 @@ local int gz_init(state)
    fails to allocate memory, otherwise 0.  flush is assumed to be a valid
    deflate() flush value.  If flush is Z_FINISH, then the deflate() state is
    reset to start a new gzip stream.  If gz->direct is true, then simply write
    to the output file without compressing, and ignore flush. */
-local int gz_comp(state, flush)
-    gz_statep state;
-    int flush;
-{
+local int gz_comp(gz_statep state, int flush) {
     int ret, writ;
     unsigned have, put, max = ((unsigned)-1 >> 2) + 1;
     z_streamp strm = &(state->strm);
 
@@ -96,8 +85,17 @@ local int gz_comp(state, flush)
         }
         return 0;
     }
 
+    /* check for a pending reset */
+    if (state->reset) {
+        /* don't start a new gzip member unless there is data to write */
+        if (strm->avail_in == 0)
+            return 0;
+        deflateReset(strm);
+        state->reset = 0;
+    }
+
     /* run deflate() on provided input until it produces no more output */
     ret = Z_OK;
     do {
         /* write out current buffer contents if full, or if flushing, but if
@@ -133,20 +131,17 @@ local int gz_comp(state, flush)
     } while (have);
 
     /* if that completed a deflate stream, allow another to start */
     if (flush == Z_FINISH)
-        deflateReset(strm);
+        state->reset = 1;
 
     /* all done, no errors */
     return 0;
 }
 
 /* Compress len zeros to output.  Return -1 on a write error or memory
    allocation failure by gz_comp(), or 0 on success. */
-local int gz_zero(state, len)
-    gz_statep state;
-    z_off64_t len;
-{
+local int gz_zero(gz_statep state, z_off64_t len) {
     int first;
     unsigned n;
     z_streamp strm = &(state->strm);
 
@@ -174,13 +169,9 @@ local int gz_zero(state, len)
 }
 
 /* Write len bytes from buf to file.  Return the number of bytes written.  If
    the returned value is less than len, then there was an error. */
-local z_size_t gz_write(state, buf, len)
-    gz_statep state;
-    voidpc buf;
-    z_size_t len;
-{
+local z_size_t gz_write(gz_statep state, voidpc buf, z_size_t len) {
     z_size_t put = len;
 
     /* if len is zero, avoid unnecessary operations */
     if (len == 0)
@@ -208,9 +199,9 @@ local z_size_t gz_write(state, buf, len)
             have = (unsigned)((state->strm.next_in + state->strm.avail_in) -
                               state->in);
             copy = state->size - have;
             if (copy > len)
-                copy = len;
+                copy = (unsigned)len;
             memcpy(state->in + have, buf, copy);
             state->strm.avail_in += copy;
             state->x.pos += copy;
             buf = (const char *)buf + copy;
@@ -228,9 +219,9 @@ local z_size_t gz_write(state, buf, len)
         state->strm.next_in = (z_const Bytef *)buf;
         do {
             unsigned n = (unsigned)-1;
             if (n > len)
-                n = len;
+                n = (unsigned)len;
             state->strm.avail_in = n;
             state->x.pos += n;
             if (gz_comp(state, Z_NO_FLUSH) == -1)
                 return 0;
@@ -242,13 +233,9 @@ local z_size_t gz_write(state, buf, len)
     return put;
 }
 
 /* -- see zlib.h -- */
-int ZEXPORT gzwrite(file, buf, len)
-    gzFile file;
-    voidpc buf;
-    unsigned len;
-{
+int ZEXPORT gzwrite(gzFile file, voidpc buf, unsigned len) {
     gz_statep state;
 
     /* get internal structure */
     if (file == NULL)
@@ -270,14 +257,10 @@ int ZEXPORT gzwrite(file, buf, len)
     return (int)gz_write(state, buf, len);
 }
 
 /* -- see zlib.h -- */
-z_size_t ZEXPORT gzfwrite(buf, size, nitems, file)
-    voidpc buf;
-    z_size_t size;
-    z_size_t nitems;
-    gzFile file;
-{
+z_size_t ZEXPORT gzfwrite(voidpc buf, z_size_t size, z_size_t nitems,
+                          gzFile file) {
     z_size_t len;
     gz_statep state;
 
     /* get internal structure */
@@ -300,12 +283,9 @@ z_size_t ZEXPORT gzfwrite(buf, size, nitems, file)
     return len ? gz_write(state, buf, len) / size : 0;
 }
 
 /* -- see zlib.h -- */
-int ZEXPORT gzputc(file, c)
-    gzFile file;
-    int c;
-{
+int ZEXPORT gzputc(gzFile file, int c) {
     unsigned have;
     unsigned char buf[1];
     gz_statep state;
     z_streamp strm;
@@ -348,14 +328,10 @@ int ZEXPORT gzputc(file, c)
     return c & 0xff;
 }
 
 /* -- see zlib.h -- */
-int ZEXPORT gzputs(file, str)
-    gzFile file;
-    const char *str;
-{
-    int ret;
-    z_size_t len;
+int ZEXPORT gzputs(gzFile file, const char *s) {
+    z_size_t len, put;
     gz_statep state;
 
     /* get internal structure */
     if (file == NULL)
@@ -366,19 +342,22 @@ int ZEXPORT gzputs(file, str)
     if (state->mode != GZ_WRITE || state->err != Z_OK)
         return -1;
 
     /* write string */
-    len = strlen(str);
-    ret = gz_write(state, str, len);
-    return ret == 0 && len != 0 ? -1 : ret;
+    len = strlen(s);
+    if ((int)len < 0 || (unsigned)len != len) {
+        gz_error(state, Z_STREAM_ERROR, "string length does not fit in int");
+        return -1;
+    }
+    put = gz_write(state, s, len);
+    return put < len ? -1 : (int)len;
 }
 
 #if defined(STDC) || defined(Z_HAVE_STDARG_H)
 #include <stdarg.h>
 
 /* -- see zlib.h -- */
-int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
-{
+int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va) {
     int len;
     unsigned left;
     char *next;
     gz_statep state;
@@ -440,17 +419,16 @@ int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
         left = strm->avail_in - state->size;
         strm->avail_in = state->size;
         if (gz_comp(state, Z_NO_FLUSH) == -1)
             return state->err;
-        memcpy(state->in, state->in + state->size, left);
+        memmove(state->in, state->in + state->size, left);
         strm->next_in = state->in;
         strm->avail_in = left;
     }
     return len;
 }
 
-int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
-{
+int ZEXPORTVA gzprintf(gzFile file, const char *format, ...) {
     va_list va;
     int ret;
 
     va_start(va, format);
@@ -461,15 +439,12 @@ int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
 
 #else /* !STDC && !Z_HAVE_STDARG_H */
 
 /* -- see zlib.h -- */
-int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-                       a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
-    gzFile file;
-    const char *format;
-    int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
-{
+int ZEXPORTVA gzprintf(gzFile file, const char *format, int a1, int a2, int a3,
+                       int a4, int a5, int a6, int a7, int a8, int a9, int a10,
+                       int a11, int a12, int a13, int a14, int a15, int a16,
+                       int a17, int a18, int a19, int a20) {
     unsigned len, left;
     char *next;
     gz_statep state;
     z_streamp strm;
@@ -539,9 +514,9 @@ int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
         left = strm->avail_in - state->size;
         strm->avail_in = state->size;
         if (gz_comp(state, Z_NO_FLUSH) == -1)
             return state->err;
-        memcpy(state->in, state->in + state->size, left);
+        memmove(state->in, state->in + state->size, left);
         strm->next_in = state->in;
         strm->avail_in = left;
     }
     return (int)len;
@@ -549,12 +524,9 @@ int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
 
 #endif
 
 /* -- see zlib.h -- */
-int ZEXPORT gzflush(file, flush)
-    gzFile file;
-    int flush;
-{
+int ZEXPORT gzflush(gzFile file, int flush) {
     gz_statep state;
 
     /* get internal structure */
     if (file == NULL)
@@ -581,13 +553,9 @@ int ZEXPORT gzflush(file, flush)
     return state->err;
 }
 
 /* -- see zlib.h -- */
-int ZEXPORT gzsetparams(file, level, strategy)
-    gzFile file;
-    int level;
-    int strategy;
-{
+int ZEXPORT gzsetparams(gzFile file, int level, int strategy) {
     gz_statep state;
     z_streamp strm;
 
     /* get internal structure */
@@ -596,9 +564,9 @@ int ZEXPORT gzsetparams(file, level, strategy)
     state = (gz_statep)file;
     strm = &(state->strm);
 
     /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
+    if (state->mode != GZ_WRITE || state->err != Z_OK || state->direct)
         return Z_STREAM_ERROR;
 
     /* if no change is requested, then do nothing */
     if (level == state->level && strategy == state->strategy)
@@ -623,11 +591,9 @@ int ZEXPORT gzsetparams(file, level, strategy)
     return Z_OK;
 }
 
 /* -- see zlib.h -- */
-int ZEXPORT gzclose_w(file)
-    gzFile file;
-{
+int ZEXPORT gzclose_w(gzFile file) {
     int ret = Z_OK;
     gz_statep state;
 
     /* get internal structure */