ssh-upload: prevent buffer overrun

diff --git a/pack-redundant.c b/pack-redundant.c
index 1869b38b726b3760f279076af43006be9f1c5acf..edb5524fc48b49bca5c0dd319caf348c9bda7c23 100644 (file)
--- a/pack-redundant.c
+++ b/pack-redundant.c
@@ -13,7 +13,7 @@
 static const char pack_redundant_usage[] =
 "git-pack-redundant [ --verbose ] [ --alt-odb ] < --all | <.pack filename> ...>";
 
-static int load_all_packs = 0, verbose = 0, alt_odb = 0;
+static int load_all_packs, verbose, alt_odb;
 
 struct llist_item {
        struct llist_item *next;
@@ -37,7 +37,7 @@ struct pll {
        struct pack_list *pl;
 };
 
-static struct llist_item *free_nodes = NULL;
+static struct llist_item *free_nodes;
 
 static inline void llist_item_put(struct llist_item *item)
 {
@@ -45,7 +45,7 @@ static inline void llist_item_put(struct llist_item *item)
        free_nodes = item;
 }
 
-static inline struct llist_item *llist_item_get()
+static inline struct llist_item *llist_item_get(void)
 {
        struct llist_item *new;
        if ( free_nodes ) {
@@ -139,7 +139,7 @@ static inline struct llist_item *llist_insert_sorted_unique(struct llist *list,
 
        l = (hint == NULL) ? list->front : hint;
        while (l) {
-               int cmp = memcmp(l->sha1, sha1, 20);
+               int cmp = hashcmp(l->sha1, sha1);
                if (cmp > 0) { /* we insert before this entry */
                        return llist_insert(list, prev, sha1);
                }
@@ -162,7 +162,7 @@ static inline struct llist_item * llist_sorted_remove(struct llist *list, const
        l = (hint == NULL) ? list->front : hint;
        prev = NULL;
        while (l) {
-               int cmp = memcmp(l->sha1, sha1, 20);
+               int cmp = hashcmp(l->sha1, sha1);
                if (cmp > 0) /* not in list, since sorted */
                        return prev;
                if(!cmp) { /* found */
@@ -246,17 +246,17 @@ static struct pack_list * pack_list_difference(const struct pack_list *A,
 static void cmp_two_packs(struct pack_list *p1, struct pack_list *p2)
 {
        int p1_off, p2_off;
-       void *p1_base, *p2_base;
+       unsigned char *p1_base, *p2_base;
        struct llist_item *p1_hint = NULL, *p2_hint = NULL;
-       
+
        p1_off = p2_off = 256 * 4 + 4;
-       p1_base = (void *)p1->pack->index_base;
-       p2_base = (void *)p2->pack->index_base;
+       p1_base = (unsigned char *) p1->pack->index_base;
+       p2_base = (unsigned char *) p2->pack->index_base;
 
        while (p1_off <= p1->pack->index_size - 3 * 20 &&
               p2_off <= p2->pack->index_size - 3 * 20)
        {
-               int cmp = memcmp(p1_base + p1_off, p2_base + p2_off, 20);
+               int cmp = hashcmp(p1_base + p1_off, p2_base + p2_off);
                /* cmp ~ p1 - p2 */
                if (cmp == 0) {
                        p1_hint = llist_sorted_remove(p1->unique_objects,
@@ -275,7 +275,7 @@ static void cmp_two_packs(struct pack_list *p1, struct pack_list *p2)
        }
 }
 
-void pll_free(struct pll *l)
+static void pll_free(struct pll *l)
 {
        struct pll *old;
        struct pack_list *opl;
@@ -351,16 +351,16 @@ static size_t sizeof_union(struct packed_git *p1, struct packed_git *p2)
 {
        size_t ret = 0;
        int p1_off, p2_off;
-       void *p1_base, *p2_base;
+       unsigned char *p1_base, *p2_base;
 
        p1_off = p2_off = 256 * 4 + 4;
-       p1_base = (void *)p1->index_base;
-       p2_base = (void *)p2->index_base;
+       p1_base = (unsigned char *)p1->index_base;
+       p2_base = (unsigned char *)p2->index_base;
 
        while (p1_off <= p1->index_size - 3 * 20 &&
               p2_off <= p2->index_size - 3 * 20)
        {
-               int cmp = memcmp(p1_base + p1_off, p2_base + p2_off, 20);
+               int cmp = hashcmp(p1_base + p1_off, p2_base + p2_off);
                /* cmp ~ p1 - p2 */
                if (cmp == 0) {
                        ret++;
@@ -534,7 +534,7 @@ static struct pack_list * add_pack(struct packed_git *p)
 {
        struct pack_list l;
        size_t off;
-       void *base;
+       unsigned char *base;
 
        if (!p->pack_local && !(alt_odb || verbose))
                return NULL;
@@ -543,7 +543,7 @@ static struct pack_list * add_pack(struct packed_git *p)
        llist_init(&l.all_objects);
 
        off = 256 * 4 + 4;
-       base = (void *)p->index_base;
+       base = (unsigned char *)p->index_base;
        while (off <= p->index_size - 3 * 20) {
                llist_insert_back(l.all_objects, base + off);
                off += 24;