diff options
Diffstat (limited to 'src/Common/zlib/infback.c')
| -rw-r--r-- | src/Common/zlib/infback.c | 50 |
1 files changed, 19 insertions, 31 deletions
diff --git a/src/Common/zlib/infback.c b/src/Common/zlib/infback.c index 59679ecb..e7b25b30 100644 --- a/src/Common/zlib/infback.c +++ b/src/Common/zlib/infback.c @@ -1,6 +1,6 @@ /* infback.c -- inflate using a call-back interface - * Copyright (C) 1995-2016 Mark Adler + * Copyright (C) 1995-2022 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* @@ -14,25 +14,18 @@ #include "inftrees.h" #include "inflate.h" #include "inffast.h" -/* function prototypes */ -local void fixedtables OF((struct inflate_state FAR *state)); - /* strm provides memory allocation functions in zalloc and zfree, or Z_NULL to use the library memory allocation functions. windowBits is in the range 8..15, and window is a user-supplied window and output buffer that is 2**windowBits bytes. */ -int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size) -z_streamp strm; -int windowBits; -unsigned char FAR *window; -const char *version; -int stream_size; -{ +int ZEXPORT inflateBackInit_(z_streamp strm, int windowBits, + unsigned char FAR *window, const char *version, + int stream_size) { struct inflate_state FAR *state; if (version == Z_NULL || version[0] != ZLIB_VERSION[0] || stream_size != (int)(sizeof(z_stream))) @@ -65,8 +58,9 @@ int stream_size; state->wsize = 1U << windowBits; state->window = window; state->wnext = 0; state->whave = 0; + state->sane = 1; return Z_OK; } /* @@ -78,11 +72,9 @@ int stream_size; exchange for a little execution time. However, BUILDFIXED should not be used for threaded applications, since the rewriting of the tables and virgin may not be thread-safe. */ -local void fixedtables(state) -struct inflate_state FAR *state; -{ +local void fixedtables(struct inflate_state FAR *state) { #ifdef BUILDFIXED static int virgin = 1; static code *lenfix, *distfix; static code fixed[544]; @@ -246,15 +238,10 @@ struct inflate_state FAR *state; error, or Z_MEM_ERROR if it could not allocate memory for the state. inflateBack() can also return Z_STREAM_ERROR if the input parameters are not correct, i.e. strm is Z_NULL or the state was not initialized. */ -int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc) -z_streamp strm; -in_func in; -void FAR *in_desc; -out_func out; -void FAR *out_desc; -{ +int ZEXPORT inflateBack(z_streamp strm, in_func in, void FAR *in_desc, + out_func out, void FAR *out_desc) { struct inflate_state FAR *state; z_const unsigned char FAR *next; /* next input */ unsigned char FAR *put; /* next output */ unsigned have, left; /* available input and output */ @@ -476,8 +463,9 @@ void FAR *out_desc; break; } Tracev((stderr, "inflate: codes ok\n")); state->mode = LEN; + /* fallthrough */ case LEN: /* use inflate_fast() if we have enough input and output */ if (have >= 6 && left >= 258) { @@ -603,35 +591,35 @@ void FAR *out_desc; } while (state->length != 0); break; case DONE: - /* inflate stream terminated properly -- write leftover output */ + /* inflate stream terminated properly */ ret = Z_STREAM_END; - if (left < state->wsize) { - if (out(out_desc, state->window, state->wsize - left)) - ret = Z_BUF_ERROR; - } goto inf_leave; case BAD: ret = Z_DATA_ERROR; goto inf_leave; - default: /* can't happen, but makes compilers happy */ + default: + /* can't happen, but makes compilers happy */ ret = Z_STREAM_ERROR; goto inf_leave; } - /* Return unused input */ + /* Write leftover output and return unused input */ inf_leave: + if (left < state->wsize) { + if (out(out_desc, state->window, state->wsize - left) && + ret == Z_STREAM_END) + ret = Z_BUF_ERROR; + } strm->next_in = next; strm->avail_in = have; return ret; } -int ZEXPORT inflateBackEnd(strm) -z_streamp strm; -{ +int ZEXPORT inflateBackEnd(z_streamp strm) { if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0) return Z_STREAM_ERROR; ZFREE(strm, strm->state); strm->state = Z_NULL; |