--- /dev/null
+/* infcover.c -- test zlib's inflate routines with full code coverage
+ * Copyright (C) 2011, 2016 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* to use, do: ./configure --cover && make cover */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include "zlib.h"
+
+/* get definition of internal structure so we can mess with it (see pull()),
+ and so we can call inflate_trees() (see cover5()) */
+#define ZLIB_INTERNAL
+#include "inftrees.h"
+#include "inflate.h"
+
+#define local static
+
+/* -- memory tracking routines -- */
+
+/*
+ These memory tracking routines are provided to zlib and track all of zlib's
+ allocations and deallocations, check for LIFO operations, keep a current
+ and high water mark of total bytes requested, optionally set a limit on the
+ total memory that can be allocated, and when done check for memory leaks.
+
+ They are used as follows:
+
+ z_stream strm;
+ mem_setup(&strm) initializes the memory tracking and sets the
+ zalloc, zfree, and opaque members of strm to use
+ memory tracking for all zlib operations on strm
+ mem_limit(&strm, limit) sets a limit on the total bytes requested -- a
+ request that exceeds this limit will result in an
+ allocation failure (returns NULL) -- setting the
+ limit to zero means no limit, which is the default
+ after mem_setup()
+ mem_used(&strm, "msg") prints to stderr "msg" and the total bytes used
+ mem_high(&strm, "msg") prints to stderr "msg" and the high water mark
+ mem_done(&strm, "msg") ends memory tracking, releases all allocations
+ for the tracking as well as leaked zlib blocks, if
+ any. If there was anything unusual, such as leaked
+ blocks, non-FIFO frees, or frees of addresses not
+ allocated, then "msg" and information about the
+ problem is printed to stderr. If everything is
+ normal, nothing is printed. mem_done resets the
+ strm members to Z_NULL to use the default memory
+ allocation routines on the next zlib initialization
+ using strm.
+ */
+
+/* these items are strung together in a linked list, one for each allocation */
+struct mem_item {
+ void *ptr; /* pointer to allocated memory */
+ size_t size; /* requested size of allocation */
+ struct mem_item *next; /* pointer to next item in list, or NULL */
+};
+
+/* this structure is at the root of the linked list, and tracks statistics */
+struct mem_zone {
+ struct mem_item *first; /* pointer to first item in list, or NULL */
+ size_t total, highwater; /* total allocations, and largest total */
+ size_t limit; /* memory allocation limit, or 0 if no limit */
+ int notlifo, rogue; /* counts of non-LIFO frees and rogue frees */
+};
+
+/* memory allocation routine to pass to zlib */
+local void *mem_alloc(void *mem, unsigned count, unsigned size)
+{
+ void *ptr;
+ struct mem_item *item;
+ struct mem_zone *zone = mem;
+ size_t len = count * (size_t)size;
+
+ /* induced allocation failure */
+ if (zone == NULL || (zone->limit && zone->total + len > zone->limit))
+ return NULL;
+
+ /* perform allocation using the standard library, fill memory with a
+ non-zero value to make sure that the code isn't depending on zeros */
+ ptr = malloc(len);
+ if (ptr == NULL)
+ return NULL;
+ memset(ptr, 0xa5, len);
+
+ /* create a new item for the list */
+ item = malloc(sizeof(struct mem_item));
+ if (item == NULL) {
+ free(ptr);
+ return NULL;
+ }
+ item->ptr = ptr;
+ item->size = len;
+
+ /* insert item at the beginning of the list */
+ item->next = zone->first;
+ zone->first = item;
+
+ /* update the statistics */
+ zone->total += item->size;
+ if (zone->total > zone->highwater)
+ zone->highwater = zone->total;
+
+ /* return the allocated memory */
+ return ptr;
+}
+
+/* memory free routine to pass to zlib */
+local void mem_free(void *mem, void *ptr)
+{
+ struct mem_item *item, *next;
+ struct mem_zone *zone = mem;
+
+ /* if no zone, just do a free */
+ if (zone == NULL) {
+ free(ptr);
+ return;
+ }
+
+ /* point next to the item that matches ptr, or NULL if not found -- remove
+ the item from the linked list if found */
+ next = zone->first;
+ if (next) {
+ if (next->ptr == ptr)
+ zone->first = next->next; /* first one is it, remove from list */
+ else {
+ do { /* search the linked list */
+ item = next;
+ next = item->next;
+ } while (next != NULL && next->ptr != ptr);
+ if (next) { /* if found, remove from linked list */
+ item->next = next->next;
+ zone->notlifo++; /* not a LIFO free */
+ }
+
+ }
+ }
+
+ /* if found, update the statistics and free the item */
+ if (next) {
+ zone->total -= next->size;
+ free(next);
+ }
+
+ /* if not found, update the rogue count */
+ else
+ zone->rogue++;
+
+ /* in any case, do the requested free with the standard library function */
+ free(ptr);
+}
+
+/* set up a controlled memory allocation space for monitoring, set the stream
+ parameters to the controlled routines, with opaque pointing to the space */
+local void mem_setup(z_stream *strm)
+{
+ struct mem_zone *zone;
+
+ zone = malloc(sizeof(struct mem_zone));
+ assert(zone != NULL);
+ zone->first = NULL;
+ zone->total = 0;
+ zone->highwater = 0;
+ zone->limit = 0;
+ zone->notlifo = 0;
+ zone->rogue = 0;
+ strm->opaque = zone;
+ strm->zalloc = mem_alloc;
+ strm->zfree = mem_free;
+}
+
+/* set a limit on the total memory allocation, or 0 to remove the limit */
+local void mem_limit(z_stream *strm, size_t limit)
+{
+ struct mem_zone *zone = strm->opaque;
+
+ zone->limit = limit;
+}
+
+/* show the current total requested allocations in bytes */
+local void mem_used(z_stream *strm, char *prefix)
+{
+ struct mem_zone *zone = strm->opaque;
+
+ fprintf(stderr, "%s: %lu allocated\n", prefix, zone->total);
+}
+
+/* show the high water allocation in bytes */
+local void mem_high(z_stream *strm, char *prefix)
+{
+ struct mem_zone *zone = strm->opaque;
+
+ fprintf(stderr, "%s: %lu high water mark\n", prefix, zone->highwater);
+}
+
+/* release the memory allocation zone -- if there are any surprises, notify */
+local void mem_done(z_stream *strm, char *prefix)
+{
+ int count = 0;
+ struct mem_item *item, *next;
+ struct mem_zone *zone = strm->opaque;
+
+ /* show high water mark */
+ mem_high(strm, prefix);
+
+ /* free leftover allocations and item structures, if any */
+ item = zone->first;
+ while (item != NULL) {
+ free(item->ptr);
+ next = item->next;
+ free(item);
+ item = next;
+ count++;
+ }
+
+ /* issue alerts about anything unexpected */
+ if (count || zone->total)
+ fprintf(stderr, "** %s: %lu bytes in %d blocks not freed\n",
+ prefix, zone->total, count);
+ if (zone->notlifo)
+ fprintf(stderr, "** %s: %d frees not LIFO\n", prefix, zone->notlifo);
+ if (zone->rogue)
+ fprintf(stderr, "** %s: %d frees not recognized\n",
+ prefix, zone->rogue);
+
+ /* free the zone and delete from the stream */
+ free(zone);
+ strm->opaque = Z_NULL;
+ strm->zalloc = Z_NULL;
+ strm->zfree = Z_NULL;
+}
+
+/* -- inflate test routines -- */
+
+/* Decode a hexadecimal string, set *len to length, in[] to the bytes. This
+ decodes liberally, in that hex digits can be adjacent, in which case two in
+ a row writes a byte. Or they can be delimited by any non-hex character,
+ where the delimiters are ignored except when a single hex digit is followed
+ by a delimiter, where that single digit writes a byte. The returned data is
+ allocated and must eventually be freed. NULL is returned if out of memory.
+ If the length is not needed, then len can be NULL. */
+local unsigned char *h2b(const char *hex, unsigned *len)
+{
+ unsigned char *in, *re;
+ unsigned next, val;
+
+ in = malloc((strlen(hex) + 1) >> 1);
+ if (in == NULL)
+ return NULL;
+ next = 0;
+ val = 1;
+ do {
+ if (*hex >= '0' && *hex <= '9')
+ val = (val << 4) + *hex - '0';
+ else if (*hex >= 'A' && *hex <= 'F')
+ val = (val << 4) + *hex - 'A' + 10;
+ else if (*hex >= 'a' && *hex <= 'f')
+ val = (val << 4) + *hex - 'a' + 10;
+ else if (val != 1 && val < 32) /* one digit followed by delimiter */
+ val += 240; /* make it look like two digits */
+ if (val > 255) { /* have two digits */
+ in[next++] = val & 0xff; /* save the decoded byte */
+ val = 1; /* start over */
+ }
+ } while (*hex++); /* go through the loop with the terminating null */
+ if (len != NULL)
+ *len = next;
+ re = realloc(in, next);
+ return re == NULL ? in : re;
+}
+
+/* generic inflate() run, where hex is the hexadecimal input data, what is the
+ text to include in an error message, step is how much input data to feed
+ inflate() on each call, or zero to feed it all, win is the window bits
+ parameter to inflateInit2(), len is the size of the output buffer, and err
+ is the error code expected from the first inflate() call (the second
+ inflate() call is expected to return Z_STREAM_END). If win is 47, then
+ header information is collected with inflateGetHeader(). If a zlib stream
+ is looking for a dictionary, then an empty dictionary is provided.
+ inflate() is run until all of the input data is consumed. */
+local void inf(char *hex, char *what, unsigned step, int win, unsigned len,
+ int err)
+{
+ int ret;
+ unsigned have;
+ unsigned char *in, *out;
+ z_stream strm, copy;
+ gz_header head;
+
+ mem_setup(&strm);
+ strm.avail_in = 0;
+ strm.next_in = Z_NULL;
+ ret = inflateInit2(&strm, win);
+ if (ret != Z_OK) {
+ mem_done(&strm, what);
+ return;
+ }
+ out = malloc(len); assert(out != NULL);
+ if (win == 47) {
+ head.extra = out;
+ head.extra_max = len;
+ head.name = out;
+ head.name_max = len;
+ head.comment = out;
+ head.comm_max = len;
+ ret = inflateGetHeader(&strm, &head); assert(ret == Z_OK);
+ }
+ in = h2b(hex, &have); assert(in != NULL);
+ if (step == 0 || step > have)
+ step = have;
+ strm.avail_in = step;
+ have -= step;
+ strm.next_in = in;
+ do {
+ strm.avail_out = len;
+ strm.next_out = out;
+ ret = inflate(&strm, Z_NO_FLUSH); assert(err == 9 || ret == err);
+ if (ret != Z_OK && ret != Z_BUF_ERROR && ret != Z_NEED_DICT)
+ break;
+ if (ret == Z_NEED_DICT) {
+ ret = inflateSetDictionary(&strm, in, 1);
+ assert(ret == Z_DATA_ERROR);
+ mem_limit(&strm, 1);
+ ret = inflateSetDictionary(&strm, out, 0);
+ assert(ret == Z_MEM_ERROR);
+ mem_limit(&strm, 0);
+ ((struct inflate_state *)strm.state)->mode = DICT;
+ ret = inflateSetDictionary(&strm, out, 0);
+ assert(ret == Z_OK);
+ ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_BUF_ERROR);
+ }
+ ret = inflateCopy(©, &strm); assert(ret == Z_OK);
+ ret = inflateEnd(©); assert(ret == Z_OK);
+ err = 9; /* don't care next time around */
+ have += strm.avail_in;
+ strm.avail_in = step > have ? have : step;
+ have -= strm.avail_in;
+ } while (strm.avail_in);
+ free(in);
+ free(out);
+ ret = inflateReset2(&strm, -8); assert(ret == Z_OK);
+ ret = inflateEnd(&strm); assert(ret == Z_OK);
+ mem_done(&strm, what);
+}
+
+/* cover all of the lines in inflate.c up to inflate() */
+local void cover_support(void)
+{
+ int ret;
+ z_stream strm;
+
+ mem_setup(&strm);
+ strm.avail_in = 0;
+ strm.next_in = Z_NULL;
+ ret = inflateInit(&strm); assert(ret == Z_OK);
+ mem_used(&strm, "inflate init");
+ ret = inflatePrime(&strm, 5, 31); assert(ret == Z_OK);
+ ret = inflatePrime(&strm, -1, 0); assert(ret == Z_OK);
+ ret = inflateSetDictionary(&strm, Z_NULL, 0);
+ assert(ret == Z_STREAM_ERROR);
+ ret = inflateEnd(&strm); assert(ret == Z_OK);
+ mem_done(&strm, "prime");
+
+ inf("63 0", "force window allocation", 0, -15, 1, Z_OK);
+ inf("63 18 5", "force window replacement", 0, -8, 259, Z_OK);
+ inf("63 18 68 30 d0 0 0", "force split window update", 4, -8, 259, Z_OK);
+ inf("3 0", "use fixed blocks", 0, -15, 1, Z_STREAM_END);
+ inf("", "bad window size", 0, 1, 0, Z_STREAM_ERROR);
+
+ mem_setup(&strm);
+ strm.avail_in = 0;
+ strm.next_in = Z_NULL;
+ ret = inflateInit_(&strm, ZLIB_VERSION - 1, (int)sizeof(z_stream));
+ assert(ret == Z_VERSION_ERROR);
+ mem_done(&strm, "wrong version");
+
+ strm.avail_in = 0;
+ strm.next_in = Z_NULL;
+ ret = inflateInit(&strm); assert(ret == Z_OK);
+ ret = inflateEnd(&strm); assert(ret == Z_OK);
+ fputs("inflate built-in memory routines\n", stderr);
+}
+
+/* cover all inflate() header and trailer cases and code after inflate() */
+local void cover_wrap(void)
+{
+ int ret;
+ z_stream strm, copy;
+ unsigned char dict[257];
+
+ ret = inflate(Z_NULL, 0); assert(ret == Z_STREAM_ERROR);
+ ret = inflateEnd(Z_NULL); assert(ret == Z_STREAM_ERROR);
+ ret = inflateCopy(Z_NULL, Z_NULL); assert(ret == Z_STREAM_ERROR);
+ fputs("inflate bad parameters\n", stderr);
+
+ inf("1f 8b 0 0", "bad gzip method", 0, 31, 0, Z_DATA_ERROR);
+ inf("1f 8b 8 80", "bad gzip flags", 0, 31, 0, Z_DATA_ERROR);
+ inf("77 85", "bad zlib method", 0, 15, 0, Z_DATA_ERROR);
+ inf("8 99", "set window size from header", 0, 0, 0, Z_OK);
+ inf("78 9c", "bad zlib window size", 0, 8, 0, Z_DATA_ERROR);
+ inf("78 9c 63 0 0 0 1 0 1", "check adler32", 0, 15, 1, Z_STREAM_END);
+ inf("1f 8b 8 1e 0 0 0 0 0 0 1 0 0 0 0 0 0", "bad header crc", 0, 47, 1,
+ Z_DATA_ERROR);
+ inf("1f 8b 8 2 0 0 0 0 0 0 1d 26 3 0 0 0 0 0 0 0 0 0", "check gzip length",
+ 0, 47, 0, Z_STREAM_END);
+ inf("78 90", "bad zlib header check", 0, 47, 0, Z_DATA_ERROR);
+ inf("8 b8 0 0 0 1", "need dictionary", 0, 8, 0, Z_NEED_DICT);
+ inf("78 9c 63 0", "compute adler32", 0, 15, 1, Z_OK);
+
+ mem_setup(&strm);
+ strm.avail_in = 0;
+ strm.next_in = Z_NULL;
+ ret = inflateInit2(&strm, -8);
+ strm.avail_in = 2;
+ strm.next_in = (void *)"\x63";
+ strm.avail_out = 1;
+ strm.next_out = (void *)&ret;
+ mem_limit(&strm, 1);
+ ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR);
+ ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR);
+ mem_limit(&strm, 0);
+ memset(dict, 0, 257);
+ ret = inflateSetDictionary(&strm, dict, 257);
+ assert(ret == Z_OK);
+ mem_limit(&strm, (sizeof(struct inflate_state) << 1) + 256);
+ ret = inflatePrime(&strm, 16, 0); assert(ret == Z_OK);
+ strm.avail_in = 2;
+ strm.next_in = (void *)"\x80";
+ ret = inflateSync(&strm); assert(ret == Z_DATA_ERROR);
+ ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_STREAM_ERROR);
+ strm.avail_in = 4;
+ strm.next_in = (void *)"\0\0\xff\xff";
+ ret = inflateSync(&strm); assert(ret == Z_OK);
+ (void)inflateSyncPoint(&strm);
+ ret = inflateCopy(©, &strm); assert(ret == Z_MEM_ERROR);
+ mem_limit(&strm, 0);
+ ret = inflateUndermine(&strm, 1); assert(ret == Z_DATA_ERROR);
+ (void)inflateMark(&strm);
+ ret = inflateEnd(&strm); assert(ret == Z_OK);
+ mem_done(&strm, "miscellaneous, force memory errors");
+}
+
+/* input and output functions for inflateBack() */
+local unsigned pull(void *desc, unsigned char **buf)
+{
+ static unsigned int next = 0;
+ static unsigned char dat[] = {0x63, 0, 2, 0};
+ struct inflate_state *state;
+
+ if (desc == Z_NULL) {
+ next = 0;
+ return 0; /* no input (already provided at next_in) */
+ }
+ state = (void *)((z_stream *)desc)->state;
+ if (state != Z_NULL)
+ state->mode = SYNC; /* force an otherwise impossible situation */
+ return next < sizeof(dat) ? (*buf = dat + next++, 1) : 0;
+}
+
+local int push(void *desc, unsigned char *buf, unsigned len)
+{
+ buf += len;
+ return desc != Z_NULL; /* force error if desc not null */
+}
+
+/* cover inflateBack() up to common deflate data cases and after those */
+local void cover_back(void)
+{
+ int ret;
+ z_stream strm;
+ unsigned char win[32768];
+
+ ret = inflateBackInit_(Z_NULL, 0, win, 0, 0);
+ assert(ret == Z_VERSION_ERROR);
+ ret = inflateBackInit(Z_NULL, 0, win); assert(ret == Z_STREAM_ERROR);
+ ret = inflateBack(Z_NULL, Z_NULL, Z_NULL, Z_NULL, Z_NULL);
+ assert(ret == Z_STREAM_ERROR);
+ ret = inflateBackEnd(Z_NULL); assert(ret == Z_STREAM_ERROR);
+ fputs("inflateBack bad parameters\n", stderr);
+
+ mem_setup(&strm);
+ ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK);
+ strm.avail_in = 2;
+ strm.next_in = (void *)"\x03";
+ ret = inflateBack(&strm, pull, Z_NULL, push, Z_NULL);
+ assert(ret == Z_STREAM_END);
+ /* force output error */
+ strm.avail_in = 3;
+ strm.next_in = (void *)"\x63\x00";
+ ret = inflateBack(&strm, pull, Z_NULL, push, &strm);
+ assert(ret == Z_BUF_ERROR);
+ /* force mode error by mucking with state */
+ ret = inflateBack(&strm, pull, &strm, push, Z_NULL);
+ assert(ret == Z_STREAM_ERROR);
+ ret = inflateBackEnd(&strm); assert(ret == Z_OK);
+ mem_done(&strm, "inflateBack bad state");
+
+ ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK);
+ ret = inflateBackEnd(&strm); assert(ret == Z_OK);
+ fputs("inflateBack built-in memory routines\n", stderr);
+}
+
+/* do a raw inflate of data in hexadecimal with both inflate and inflateBack */
+local int try(char *hex, char *id, int err)
+{
+ int ret;
+ unsigned len, size;
+ unsigned char *in, *out, *win;
+ char *prefix;
+ z_stream strm;
+
+ /* convert to hex */
+ in = h2b(hex, &len);
+ assert(in != NULL);
+
+ /* allocate work areas */
+ size = len << 3;
+ out = malloc(size);
+ assert(out != NULL);
+ win = malloc(32768);
+ assert(win != NULL);
+ prefix = malloc(strlen(id) + 6);
+ assert(prefix != NULL);
+
+ /* first with inflate */
+ strcpy(prefix, id);
+ strcat(prefix, "-late");
+ mem_setup(&strm);
+ strm.avail_in = 0;
+ strm.next_in = Z_NULL;
+ ret = inflateInit2(&strm, err < 0 ? 47 : -15);
+ assert(ret == Z_OK);
+ strm.avail_in = len;
+ strm.next_in = in;
+ do {
+ strm.avail_out = size;
+ strm.next_out = out;
+ ret = inflate(&strm, Z_TREES);
+ assert(ret != Z_STREAM_ERROR && ret != Z_MEM_ERROR);
+ if (ret == Z_DATA_ERROR || ret == Z_NEED_DICT)
+ break;
+ } while (strm.avail_in || strm.avail_out == 0);
+ if (err) {
+ assert(ret == Z_DATA_ERROR);
+ assert(strcmp(id, strm.msg) == 0);
+ }
+ inflateEnd(&strm);
+ mem_done(&strm, prefix);
+
+ /* then with inflateBack */
+ if (err >= 0) {
+ strcpy(prefix, id);
+ strcat(prefix, "-back");
+ mem_setup(&strm);
+ ret = inflateBackInit(&strm, 15, win);
+ assert(ret == Z_OK);
+ strm.avail_in = len;
+ strm.next_in = in;
+ ret = inflateBack(&strm, pull, Z_NULL, push, Z_NULL);
+ assert(ret != Z_STREAM_ERROR);
+ if (err) {
+ assert(ret == Z_DATA_ERROR);
+ assert(strcmp(id, strm.msg) == 0);
+ }
+ inflateBackEnd(&strm);
+ mem_done(&strm, prefix);
+ }
+
+ /* clean up */
+ free(prefix);
+ free(win);
+ free(out);
+ free(in);
+ return ret;
+}
+
+/* cover deflate data cases in both inflate() and inflateBack() */
+local void cover_inflate(void)
+{
+ try("0 0 0 0 0", "invalid stored block lengths", 1);
+ try("3 0", "fixed", 0);
+ try("6", "invalid block type", 1);
+ try("1 1 0 fe ff 0", "stored", 0);
+ try("fc 0 0", "too many length or distance symbols", 1);
+ try("4 0 fe ff", "invalid code lengths set", 1);
+ try("4 0 24 49 0", "invalid bit length repeat", 1);
+ try("4 0 24 e9 ff ff", "invalid bit length repeat", 1);
+ try("4 0 24 e9 ff 6d", "invalid code -- missing end-of-block", 1);
+ try("4 80 49 92 24 49 92 24 71 ff ff 93 11 0",
+ "invalid literal/lengths set", 1);
+ try("4 80 49 92 24 49 92 24 f b4 ff ff c3 84", "invalid distances set", 1);
+ try("4 c0 81 8 0 0 0 0 20 7f eb b 0 0", "invalid literal/length code", 1);
+ try("2 7e ff ff", "invalid distance code", 1);
+ try("c c0 81 0 0 0 0 0 90 ff 6b 4 0", "invalid distance too far back", 1);
+
+ /* also trailer mismatch just in inflate() */
+ try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 1", "incorrect data check", -1);
+ try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 1",
+ "incorrect length check", -1);
+ try("5 c0 21 d 0 0 0 80 b0 fe 6d 2f 91 6c", "pull 17", 0);
+ try("5 e0 81 91 24 cb b2 2c 49 e2 f 2e 8b 9a 47 56 9f fb fe ec d2 ff 1f",
+ "long code", 0);
+ try("ed c0 1 1 0 0 0 40 20 ff 57 1b 42 2c 4f", "length extra", 0);
+ try("ed cf c1 b1 2c 47 10 c4 30 fa 6f 35 1d 1 82 59 3d fb be 2e 2a fc f c",
+ "long distance and extra", 0);
+ try("ed c0 81 0 0 0 0 80 a0 fd a9 17 a9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
+ "0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6", "window end", 0);
+ inf("2 8 20 80 0 3 0", "inflate_fast TYPE return", 0, -15, 258,
+ Z_STREAM_END);
+ inf("63 18 5 40 c 0", "window wrap", 3, -8, 300, Z_OK);
+}
+
+/* cover remaining lines in inftrees.c */
+local void cover_trees(void)
+{
+ int ret;
+ unsigned bits;
+ unsigned short lens[16], work[16];
+ code *next, table[ENOUGH_DISTS];
+
+ /* we need to call inflate_table() directly in order to manifest not-
+ enough errors, since zlib insures that enough is always enough */
+ for (bits = 0; bits < 15; bits++)
+ lens[bits] = (unsigned short)(bits + 1);
+ lens[15] = 15;
+ next = table;
+ bits = 15;
+ ret = inflate_table(DISTS, lens, 16, &next, &bits, work);
+ assert(ret == 1);
+ next = table;
+ bits = 1;
+ ret = inflate_table(DISTS, lens, 16, &next, &bits, work);
+ assert(ret == 1);
+ fputs("inflate_table not enough errors\n", stderr);
+}
+
+/* cover remaining inffast.c decoding and window copying */
+local void cover_fast(void)
+{
+ inf("e5 e0 81 ad 6d cb b2 2c c9 01 1e 59 63 ae 7d ee fb 4d fd b5 35 41 68"
+ " ff 7f 0f 0 0 0", "fast length extra bits", 0, -8, 258, Z_DATA_ERROR);
+ inf("25 fd 81 b5 6d 59 b6 6a 49 ea af 35 6 34 eb 8c b9 f6 b9 1e ef 67 49"
+ " 50 fe ff ff 3f 0 0", "fast distance extra bits", 0, -8, 258,
+ Z_DATA_ERROR);
+ inf("3 7e 0 0 0 0 0", "fast invalid distance code", 0, -8, 258,
+ Z_DATA_ERROR);
+ inf("1b 7 0 0 0 0 0", "fast invalid literal/length code", 0, -8, 258,
+ Z_DATA_ERROR);
+ inf("d c7 1 ae eb 38 c 4 41 a0 87 72 de df fb 1f b8 36 b1 38 5d ff ff 0",
+ "fast 2nd level codes and too far back", 0, -8, 258, Z_DATA_ERROR);
+ inf("63 18 5 8c 10 8 0 0 0 0", "very common case", 0, -8, 259, Z_OK);
+ inf("63 60 60 18 c9 0 8 18 18 18 26 c0 28 0 29 0 0 0",
+ "contiguous and wrap around window", 6, -8, 259, Z_OK);
+ inf("63 0 3 0 0 0 0 0", "copy direct from output", 0, -8, 259,
+ Z_STREAM_END);
+}
+
+int main(void)
+{
+ fprintf(stderr, "%s\n", zlibVersion());
+ cover_support();
+ cover_wrap();
+ cover_back();
+ cover_inflate();
+ cover_trees();
+ cover_fast();
+ return 0;
+}
projects / ossec-hids.git / blobdiff