Add patch file missing from r233017.
This addition allows import_from_android.sh to be idempotent again.
git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/openssl@233053 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
diff --git a/patches.chromium/0006-lhashfix b/patches.chromium/0006-lhashfix
new file mode 100644
index 0000000..eb3ac1d
--- /dev/null
+++ b/patches.chromium/0006-lhashfix
@@ -0,0 +1,343 @@
+diff -burN android-openssl.orig/crypto/conf/conf_api.c android-openssl-lhash/crypto/conf/conf_api.c
+--- android-openssl.orig/crypto/conf/conf_api.c 2013-02-11 10:26:04.000000000 -0500
++++ android-openssl-lhash/crypto/conf/conf_api.c 2013-11-05 14:16:49.500027656 -0500
+@@ -225,9 +225,6 @@
+ {
+ if (conf == NULL || conf->data == NULL) return;
+
+- lh_CONF_VALUE_down_load(conf->data)=0; /* evil thing to make
+- * sure the 'OPENSSL_free()' works as
+- * expected */
+ lh_CONF_VALUE_doall_arg(conf->data,
+ LHASH_DOALL_ARG_FN(value_free_hash),
+ LHASH_OF(CONF_VALUE), conf->data);
+diff -burN android-openssl.orig/crypto/lhash/lhash.c android-openssl-lhash/crypto/lhash/lhash.c
+--- android-openssl.orig/crypto/lhash/lhash.c 2013-02-11 10:26:04.000000000 -0500
++++ android-openssl-lhash/crypto/lhash/lhash.c 2013-11-05 14:16:49.500027656 -0500
+@@ -94,6 +94,7 @@
+ *
+ * 1.0 eay - First version
+ */
++#include <limits.h>
+ #include <stdio.h>
+ #include <string.h>
+ #include <stdlib.h>
+@@ -107,6 +108,113 @@
+ #define UP_LOAD (2*LH_LOAD_MULT) /* load times 256 (default 2) */
+ #define DOWN_LOAD (LH_LOAD_MULT) /* load times 256 (default 1) */
+
++/* Maximum number of nodes to guarantee the load computations don't overflow */
++#define MAX_LOAD_ITEMS (UINT_MAX / LH_LOAD_MULT)
++
++/* The field 'iteration_state' is used to hold data to ensure that a hash
++ * table is not resized during an 'insert' or 'delete' operation performed
++ * within a lh_doall/lh_doall_arg call.
++ *
++ * Conceptually, this records two things:
++ *
++ * - A 'depth' count, which is incremented at the start of lh_doall*,
++ * and decremented just before it returns.
++ *
++ * - A 'mutated' boolean flag, which is set in lh_insert() or lh_delete()
++ * when the operation is performed with a non-0 depth.
++ *
++ * The following are helper macros to handle this state in a more explicit
++ * way.
++ */
++
++/* Reset the iteration state to its defaults. */
++#define LH_ITERATION_RESET(lh) do { \
++ (lh)->iteration_state = 0; \
++ } while (0)
++
++/* Returns 1 if the hash table is currently being iterated on, 0 otherwise. */
++#define LH_ITERATION_IS_ACTIVE(lh) ((lh)->iteration_state >= 2)
++
++/* Increment iteration depth. This should always be followed by a paired call
++ * to LH_ITERATION_DECREMENT_DEPTH(). */
++#define LH_ITERATION_INCREMENT_DEPTH(lh) do { \
++ (lh)->iteration_state += 2; \
++ } while (0)
++
++/* Decrement iteration depth. This should always be called after a paired call
++ * to LH_ITERATION_INCREMENT_DEPTH(). */
++#define LH_ITERATION_DECREMENT_DEPTH(lh) do { \
++ (lh)->iteration_state -= 2; \
++ } while (0)
++
++/* Return 1 if the iteration 'mutated' flag is set, 0 otherwise. */
++#define LH_ITERATION_IS_MUTATED(lh) (((lh)->iteration_state & 1) != 0)
++
++/* Set the iteration 'mutated' flag to 1. LH_ITERATION_RESET() to reset it. */
++#define LH_ITERATION_SET_MUTATED(lh) do { \
++ (lh)->iteration_state |= 1; \
++ } while (0)
++
++/* This macro returns 1 if the hash table should be expanded due to its current
++ * load, or 0 otherwise. The exact comparison to be performed is expressed by
++ * the mathematical expression (where '//' denotes division over real numbers):
++ *
++ * (num_items // num_nodes) >= (up_load // LOAD_MULT) or
++ * (num_items * LOAD_MULT // num_nodes) >= up_load.
++ *
++ * Given that the C language operator '/' implements integer division, i.e:
++ * a // b == (a / b) + epsilon (with 0 <= epsilon < 1, for positive a & b)
++ *
++ * This can be rewritten as:
++ * (num_items * LOAD_MULT / num_nodes) + epsilon >= up_load
++ * (num_items * LOAD_MULT / num_nodes) - up_load >= - epsilon
++ *
++ * Let's call 'A' the left-hand side of the equation above, it is an integer
++ * and:
++ * - If A >= 0, the expression is true for any value of epsilon.
++ * - If A <= -1, the expression is also true for any value of epsilon.
++ *
++ * In other words, this is equivalent to 'A >= 0', or:
++ * (num_items * LOAD_MULT / num_nodes) >= up_load
++ */
++#define LH_SHOULD_EXPAND(lh) \
++ ((lh)->num_items < MAX_LOAD_ITEMS && \
++ (((lh)->num_items*LH_LOAD_MULT/(lh)->num_nodes) >= (lh)->up_load))
++
++/* This macro returns 1 if the hash table should be contracted due to its
++ * current load, or 0 otherwise. Abbreviated computations are:
++ *
++ * (num_items // num_nodes) <= (down_load // LOAD_MULT)
++ * (num_items * LOAD_MULT // num_nodes) <= down_load
++ * (num_items * LOAD_MULT / num_nodes) + epsilon <= down_load
++ * (num_items * LOAD_MULT / num_nodes) - down_load <= -epsilon
++ *
++ * Let's call 'B' the left-hand side of the equation above:
++ * - If B <= -1, the expression is true for any value of epsilon.
++ * - If B >= 1, the expression is false for any value of epsilon.
++ * - If B == 0, the expression is true for 'epsilon == 0', and false
++ * otherwise, which is problematic.
++ *
++ * To work around this problem, while keeping the code simple, just change
++ * the initial expression to use a strict inequality, i.e.:
++ *
++ * (num_items // num_nodes) < (down_load // LOAD_MULT)
++ *
++ * Which leads to:
++ * (num_items * LOAD_MULT / num_nodes) - down_load < -epsilon
++ *
++ * Then:
++ * - If 'B <= -1', the expression is true for any value of epsilon.
++ * - If 'B' >= 0, the expression is false for any value of epsilon,
++ *
++ * In other words, this is equivalent to 'B < 0', or:
++ * (num_items * LOAD_MULT / num_nodes) < down_load
++ */
++#define LH_SHOULD_CONTRACT(lh) \
++ (((lh)->num_nodes > MIN_NODES) && \
++ ((lh)->num_items < MAX_LOAD_ITEMS && \
++ ((lh)->num_items*LH_LOAD_MULT/(lh)->num_nodes) < (lh)->down_load))
++
+ static void expand(_LHASH *lh);
+ static void contract(_LHASH *lh);
+ static LHASH_NODE **getrn(_LHASH *lh, const void *data, unsigned long *rhash);
+@@ -147,6 +255,7 @@
+ ret->num_hash_comps=0;
+
+ ret->error=0;
++ LH_ITERATION_RESET(ret);
+ return(ret);
+ err1:
+ OPENSSL_free(ret);
+@@ -183,7 +292,10 @@
+ void *ret;
+
+ lh->error=0;
+- if (lh->up_load <= (lh->num_items*LH_LOAD_MULT/lh->num_nodes))
++ /* Do not expand the array if the table is being iterated on. */
++ if (LH_ITERATION_IS_ACTIVE(lh))
++ LH_ITERATION_SET_MUTATED(lh);
++ else if (LH_SHOULD_EXPAND(lh))
+ expand(lh);
+
+ rn=getrn(lh,data,&hash);
+@@ -238,8 +350,10 @@
+ }
+
+ lh->num_items--;
+- if ((lh->num_nodes > MIN_NODES) &&
+- (lh->down_load >= (lh->num_items*LH_LOAD_MULT/lh->num_nodes)))
++ /* Do not contract the array if the table is being iterated on. */
++ if (LH_ITERATION_IS_ACTIVE(lh))
++ LH_ITERATION_SET_MUTATED(lh);
++ else if (LH_SHOULD_CONTRACT(lh))
+ contract(lh);
+
+ return(ret);
+@@ -276,6 +390,7 @@
+ if (lh == NULL)
+ return;
+
++ LH_ITERATION_INCREMENT_DEPTH(lh);
+ /* reverse the order so we search from 'top to bottom'
+ * We were having memory leaks otherwise */
+ for (i=lh->num_nodes-1; i>=0; i--)
+@@ -283,10 +398,7 @@
+ a=lh->b[i];
+ while (a != NULL)
+ {
+- /* 28/05/91 - eay - n added so items can be deleted
+- * via lh_doall */
+- /* 22/05/08 - ben - eh? since a is not passed,
+- * this should not be needed */
++ /* note that 'a' can be deleted by the callback */
+ n=a->next;
+ if(use_arg)
+ func_arg(a->data,arg);
+@@ -295,6 +407,19 @@
+ a=n;
+ }
+ }
++
++ LH_ITERATION_DECREMENT_DEPTH(lh);
++ if (!LH_ITERATION_IS_ACTIVE(lh) && LH_ITERATION_IS_MUTATED(lh))
++ {
++ LH_ITERATION_RESET(lh);
++ /* Resize the buckets array if necessary. Each expand() or
++ * contract() call will double/halve the size of the array,
++ * respectively, so call them in a loop. */
++ while (LH_SHOULD_EXPAND(lh))
++ expand(lh);
++ while (LH_SHOULD_CONTRACT(lh))
++ contract(lh);
++ }
+ }
+
+ void lh_doall(_LHASH *lh, LHASH_DOALL_FN_TYPE func)
+diff -burN android-openssl.orig/crypto/lhash/lhash.h android-openssl-lhash/crypto/lhash/lhash.h
+--- android-openssl.orig/crypto/lhash/lhash.h 2013-02-11 10:26:04.000000000 -0500
++++ android-openssl-lhash/crypto/lhash/lhash.h 2013-11-05 14:16:49.500027656 -0500
+@@ -163,6 +163,7 @@
+ unsigned long num_hash_comps;
+
+ int error;
++ int iteration_state;
+ } _LHASH; /* Do not use _LHASH directly, use LHASH_OF
+ * and friends */
+
+diff -burN android-openssl.orig/crypto/objects/o_names.c android-openssl-lhash/crypto/objects/o_names.c
+--- android-openssl.orig/crypto/objects/o_names.c 2013-02-11 10:26:04.000000000 -0500
++++ android-openssl-lhash/crypto/objects/o_names.c 2013-11-05 14:16:49.500027656 -0500
+@@ -350,13 +350,9 @@
+
+ void OBJ_NAME_cleanup(int type)
+ {
+- unsigned long down_load;
+-
+ if (names_lh == NULL) return;
+
+ free_type=type;
+- down_load=lh_OBJ_NAME_down_load(names_lh);
+- lh_OBJ_NAME_down_load(names_lh)=0;
+
+ lh_OBJ_NAME_doall(names_lh,LHASH_DOALL_FN(names_lh_free));
+ if (type < 0)
+@@ -366,7 +362,5 @@
+ names_lh=NULL;
+ name_funcs_stack = NULL;
+ }
+- else
+- lh_OBJ_NAME_down_load(names_lh)=down_load;
+ }
+
+diff -burN android-openssl.orig/crypto/objects/obj_dat.c android-openssl-lhash/crypto/objects/obj_dat.c
+--- android-openssl.orig/crypto/objects/obj_dat.c 2013-02-11 10:26:04.000000000 -0500
++++ android-openssl-lhash/crypto/objects/obj_dat.c 2013-11-05 14:16:49.500027656 -0500
+@@ -227,7 +227,6 @@
+ return ;
+ }
+ if (added == NULL) return;
+- lh_ADDED_OBJ_down_load(added) = 0;
+ lh_ADDED_OBJ_doall(added,LHASH_DOALL_FN(cleanup1)); /* zero counters */
+ lh_ADDED_OBJ_doall(added,LHASH_DOALL_FN(cleanup2)); /* set counters */
+ lh_ADDED_OBJ_doall(added,LHASH_DOALL_FN(cleanup3)); /* free objects */
+diff -burN android-openssl.orig/include/openssl/lhash.h android-openssl-lhash/include/openssl/lhash.h
+--- android-openssl.orig/include/openssl/lhash.h 2013-11-05 14:11:20.903223251 -0500
++++ android-openssl-lhash/include/openssl/lhash.h 2013-11-05 14:16:49.500027656 -0500
+@@ -163,6 +163,7 @@
+ unsigned long num_hash_comps;
+
+ int error;
++ int iteration_state;
+ } _LHASH; /* Do not use _LHASH directly, use LHASH_OF
+ * and friends */
+
+diff -burN android-openssl.orig/include/openssl/ssl.h android-openssl-lhash/include/openssl/ssl.h
+--- android-openssl.orig/include/openssl/ssl.h 2013-11-05 14:11:21.013222124 -0500
++++ android-openssl-lhash/include/openssl/ssl.h 2013-11-05 14:16:49.500027656 -0500
+@@ -1681,10 +1681,10 @@
+ SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)ecdh)
+
+ /* SSL_enable_tls_channel_id either configures a TLS server to accept TLS client
+- * IDs from clients, or configure a client to send TLS client IDs to server.
++ * IDs from clients, or configures a client to send TLS client IDs to server.
+ * Returns 1 on success. */
+-#define SSL_enable_tls_channel_id(s) \
+- SSL_ctrl(s,SSL_CTRL_CHANNEL_ID,0,NULL)
++#define SSL_enable_tls_channel_id(ssl) \
++ SSL_ctrl(ssl,SSL_CTRL_CHANNEL_ID,0,NULL)
+ /* SSL_set1_tls_channel_id configures a TLS client to send a TLS Channel ID to
+ * compatible servers. private_key must be a P-256 EVP_PKEY*. Returns 1 on
+ * success. */
+diff -burN android-openssl.orig/openssl.config android-openssl-lhash/openssl.config
+--- android-openssl.orig/openssl.config 2013-11-05 14:11:10.833326408 -0500
++++ android-openssl-lhash/openssl.config 2013-11-05 14:16:49.500027656 -0500
+@@ -997,6 +997,7 @@
+ fix_clang_build.patch \
+ x509_hash_name_algorithm_change.patch \
+ reduce_client_hello_size.patch \
++fix_lhash_iteration.patch \
+ "
+
+ OPENSSL_PATCHES_progs_SOURCES="\
+@@ -1060,3 +1061,13 @@
+ OPENSSL_PATCHES_reduce_client_hello_size_SOURCES="\
+ ssl/t1_lib.c \
+ "
++
++OPENSSL_PATCHES_fix_lhash_iteration_SOURCES="\
++crypto/conf/conf_api.c
++crypto/lhash/lhash.c
++crypto/lhash/lhash.h
++crypto/objects/o_names.c
++crypto/objects/obj_dat.c
++include/openssl/lhash.h
++ssl/ssl_sess.c
++"
+diff -burN android-openssl.orig/ssl/ssl.h android-openssl-lhash/ssl/ssl.h
+--- android-openssl.orig/ssl/ssl.h 2013-11-05 14:11:18.363249269 -0500
++++ android-openssl-lhash/ssl/ssl.h 2013-11-05 14:16:49.510027563 -0500
+@@ -1681,10 +1681,10 @@
+ SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)ecdh)
+
+ /* SSL_enable_tls_channel_id either configures a TLS server to accept TLS client
+- * IDs from clients, or configure a client to send TLS client IDs to server.
++ * IDs from clients, or configures a client to send TLS client IDs to server.
+ * Returns 1 on success. */
+-#define SSL_enable_tls_channel_id(s) \
+- SSL_ctrl(s,SSL_CTRL_CHANNEL_ID,0,NULL)
++#define SSL_enable_tls_channel_id(ssl) \
++ SSL_ctrl(ssl,SSL_CTRL_CHANNEL_ID,0,NULL)
+ /* SSL_set1_tls_channel_id configures a TLS client to send a TLS Channel ID to
+ * compatible servers. private_key must be a P-256 EVP_PKEY*. Returns 1 on
+ * success. */
+diff -burN android-openssl.orig/ssl/ssl_sess.c android-openssl-lhash/ssl/ssl_sess.c
+--- android-openssl.orig/ssl/ssl_sess.c 2013-11-05 14:11:18.363249269 -0500
++++ android-openssl-lhash/ssl/ssl_sess.c 2013-11-05 14:16:49.510027563 -0500
+@@ -999,11 +999,8 @@
+ if (tp.cache == NULL) return;
+ tp.time=t;
+ CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
+- i=CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load;
+- CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=0;
+ lh_SSL_SESSION_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout),
+ TIMEOUT_PARAM, &tp);
+- CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=i;
+ CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
+ }
+
