Avoid overflowing name buffer in deep directory structures

diff --git a/fetch.c b/fetch.c
index ef60b045eaa0a55ba65499187a3aac082ffb6af2..8e29d313f817981a29ebb65f2f579c9f1bd8e9b6 100644 (file)
--- a/fetch.c
+++ b/fetch.c
@@ -1,6 +1,5 @@
-#include "fetch.h"
-
 #include "cache.h"
+#include "fetch.h"
 #include "commit.h"
 #include "tree.h"
 #include "tree-walk.h"
@@ -22,14 +21,15 @@ void pull_say(const char *fmt, const char *hex)
                fprintf(stderr, fmt, hex);
 }
 
-static void report_missing(const char *what, const unsigned char *missing)
+static void report_missing(const struct object *obj)
 {
        char missing_hex[41];
-
-       strcpy(missing_hex, sha1_to_hex(missing));;
-       fprintf(stderr,
-               "Cannot obtain needed %s %s\nwhile processing commit %s.\n",
-               what, missing_hex, sha1_to_hex(current_commit_sha1));
+       strcpy(missing_hex, sha1_to_hex(obj->sha1));;
+       fprintf(stderr, "Cannot obtain needed %s %s\n",
+               obj->type ? typename(obj->type): "object", missing_hex);
+       if (!is_null_sha1(current_commit_sha1))
+               fprintf(stderr, "while processing commit %s.\n",
+                       sha1_to_hex(current_commit_sha1));
 }
 
 static int process(struct object *obj);
@@ -42,8 +42,7 @@ static int process_tree(struct tree *tree)
        if (parse_tree(tree))
                return -1;
 
-       desc.buf = tree->buffer;
-       desc.size = tree->size;
+       init_tree_desc(&desc, tree->buffer, tree->size);
        while (tree_entry(&desc, &entry)) {
                struct object *obj = NULL;
 
@@ -177,7 +176,7 @@ static int loop(void)
                 */
                if (! (obj->flags & TO_SCAN)) {
                        if (fetch(obj->sha1)) {
-                               report_missing(typename(obj->type), obj->sha1);
+                               report_missing(obj);
                                return -1;
                        }
                }
@@ -201,7 +200,7 @@ static int interpret_target(char *target, unsigned char *sha1)
        return -1;
 }
 
-static int mark_complete(const char *path, const unsigned char *sha1)
+static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data)
 {
        struct commit *commit = lookup_commit_reference_gently(sha1, 1);
        if (commit) {
@@ -234,8 +233,8 @@ int pull_targets_stdin(char ***target, const char ***write_ref)
                        *target = xrealloc(*target, targets_alloc * sizeof(**target));
                        *write_ref = xrealloc(*write_ref, targets_alloc * sizeof(**write_ref));
                }
-               (*target)[targets] = strdup(tg_one);
-               (*write_ref)[targets] = rf_one ? strdup(rf_one) : NULL;
+               (*target)[targets] = xstrdup(tg_one);
+               (*write_ref)[targets] = rf_one ? xstrdup(rf_one) : NULL;
                targets++;
        }
        return targets;
@@ -266,7 +265,7 @@ int pull(int targets, char **target, const char **write_ref,
                if (!write_ref || !write_ref[i])
                        continue;
 
-               lock[i] = lock_ref_sha1(write_ref[i], NULL, 0);
+               lock[i] = lock_ref_sha1(write_ref[i], NULL);
                if (!lock[i]) {
                        error("Can't lock ref %s", write_ref[i]);
                        goto unlock_and_fail;
@@ -274,7 +273,7 @@ int pull(int targets, char **target, const char **write_ref,
        }
 
        if (!get_recover)
-               for_each_ref(mark_complete);
+               for_each_ref(mark_complete, NULL);
 
        for (i = 0; i < targets; i++) {
                if (interpret_target(target[i], &sha1[20 * i])) {
@@ -302,8 +301,7 @@ int pull(int targets, char **target, const char **write_ref,
                if (ret)
                        goto unlock_and_fail;
        }
-       if (msg)
-               free(msg);
+       free(msg);
 
        return 0;