diff options
Diffstat (limited to 'libarchive/archive_read_support_filter_gzip.c')
-rw-r--r-- | libarchive/archive_read_support_filter_gzip.c | 54 |
1 files changed, 35 insertions, 19 deletions
diff --git a/libarchive/archive_read_support_filter_gzip.c b/libarchive/archive_read_support_filter_gzip.c index 458b6f729164..9fa9e2b0ddb8 100644 --- a/libarchive/archive_read_support_filter_gzip.c +++ b/libarchive/archive_read_support_filter_gzip.c @@ -131,12 +131,20 @@ archive_read_support_filter_gzip(struct archive *_a) */ static ssize_t peek_at_header(struct archive_read_filter *filter, int *pbits, - struct private_data *state) +#ifdef HAVE_ZLIB_H + struct private_data *state +#else + void *state +#endif + ) { const unsigned char *p; ssize_t avail, len; int bits = 0; int header_flags; +#ifndef HAVE_ZLIB_H + (void)state; /* UNUSED */ +#endif /* Start by looking at the first ten bytes of the header, which * is all fixed layout. */ @@ -153,8 +161,10 @@ peek_at_header(struct archive_read_filter *filter, int *pbits, bits += 3; header_flags = p[3]; /* Bytes 4-7 are mod time in little endian. */ +#ifdef HAVE_ZLIB_H if (state) state->mtime = archive_le32dec(p + 4); +#endif /* Byte 8 is deflate flags. */ /* XXXX TODO: return deflate flags back to consume_header for use in initializing the decompressor. */ @@ -171,7 +181,9 @@ peek_at_header(struct archive_read_filter *filter, int *pbits, /* Null-terminated optional filename. */ if (header_flags & 8) { +#ifdef HAVE_ZLIB_H ssize_t file_start = len; +#endif do { ++len; if (avail < len) @@ -181,11 +193,13 @@ peek_at_header(struct archive_read_filter *filter, int *pbits, return (0); } while (p[len - 1] != 0); +#ifdef HAVE_ZLIB_H if (state) { /* Reset the name in case of repeat header reads. */ free(state->name); state->name = strdup((const char *)&p[file_start]); } +#endif } /* Null-terminated optional comment. */ @@ -236,24 +250,6 @@ gzip_bidder_bid(struct archive_read_filter_bidder *self, return (0); } -static int -gzip_read_header(struct archive_read_filter *self, struct archive_entry *entry) -{ - struct private_data *state; - - state = (struct private_data *)self->data; - - /* A mtime of 0 is considered invalid/missing. */ - if (state->mtime != 0) - archive_entry_set_mtime(entry, state->mtime, 0); - - /* If the name is available, extract it. */ - if (state->name) - archive_entry_set_pathname(entry, state->name); - - return (ARCHIVE_OK); -} - #ifndef HAVE_ZLIB_H /* @@ -277,6 +273,24 @@ gzip_bidder_init(struct archive_read_filter *self) #else +static int +gzip_read_header(struct archive_read_filter *self, struct archive_entry *entry) +{ + struct private_data *state; + + state = (struct private_data *)self->data; + + /* A mtime of 0 is considered invalid/missing. */ + if (state->mtime != 0) + archive_entry_set_mtime(entry, state->mtime, 0); + + /* If the name is available, extract it. */ + if (state->name) + archive_entry_set_pathname(entry, state->name); + + return (ARCHIVE_OK); +} + /* * Initialize the filter object. */ @@ -306,7 +320,9 @@ gzip_bidder_init(struct archive_read_filter *self) self->read = gzip_filter_read; self->skip = NULL; /* not supported */ self->close = gzip_filter_close; +#ifdef HAVE_ZLIB_H self->read_header = gzip_read_header; +#endif state->in_stream = 0; /* We're not actually within a stream yet. */ |