Round #1 of scan-build warnings cleanup

kdc/connect.c

@@ -1018,7 +1018,7 @@ reap_kid(krb5_context context, krb5_kdc_configuration *config,
     pid_t pid;
     char *what;
     int status;
-    int i;
+    int i = 0; /* quiet warnings */
 
     pid = waitpid(-1, &status, options);
     if (pid < 1)
@@ -1093,7 +1093,7 @@ start_kdc(krb5_context context,
     struct timeval tv2;
     struct descr *d;
     unsigned int ndescr;
-    pid_t pid;
+    pid_t pid = -1;
 #ifdef HAVE_FORK
     pid_t *pids;
     int max_kdcs = config->num_kdc_processes;
@@ -1154,6 +1154,7 @@ start_kdc(krb5_context context,
     tv1.tv_usec = 0;
 
 #ifdef HAVE_FORK
+    /* Note that we might never execute the body of this loop */
     while (exit_flag == 0) {
 
 	/* Slow down the creation of KDCs... */

lib/hdb/db3.c

@@ -454,7 +454,7 @@ hdb_db3_create(krb5_context context, HDB **db,
 	       const char *filename)
 {
     DB3_HDB **db3 = (DB3_HDB **)db;
-    *db = calloc(1, sizeof(**db3));    /* Allocate space for the larger db3 */
+    *db3 = calloc(1, sizeof(**db3));    /* Allocate space for the larger db3 */
     if (*db == NULL) {
 	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
 	return ENOMEM;

lib/hdb/hdb-ldap.c

@@ -1114,7 +1114,8 @@ LDAP_message2entry(krb5_context context, HDB * db, LDAPMessage * msg,
 	    goto out;
 	}
 	ent->entry.etypes->len = ldap_count_values_len(vals);
-	ent->entry.etypes->val = calloc(ent->entry.etypes->len, sizeof(int));
+	ent->entry.etypes->val = calloc(ent->entry.etypes->len,
+                                        sizeof(ent->entry.etypes->val[0]));
 	if (ent->entry.etypes->val == NULL) {
 	    ret = ENOMEM;
 	    krb5_set_error_message(context, ret, "malloc: out of memory");
@@ -1573,7 +1574,7 @@ LDAP_firstkey(krb5_context context, HDB *db, unsigned flags,
 			"(|(objectClass=krb5Principal)(objectClass=sambaSamAccount))",
 			krb5kdcentry_attrs, 0,
 			NULL, NULL, NULL, 0, &msgid);
-    if (msgid < 0)
+    if (ret != LDAP_SUCCESS || msgid < 0)
 	return HDB_ERR_NOENTRY;
 
     HDBSETMSGID(db, msgid);

lib/hdb/hdb-mdb.c

@@ -282,14 +282,11 @@ DB_open(krb5_context context, HDB *db, int flags, mode_t mode)
     if((flags & O_ACCMODE) == O_RDONLY)
       myflags |= MDB_RDONLY;
 
-    if (asprintf(&fn, "%s.mdb", db->hdb_name) == -1) {
-	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
-	return ENOMEM;
-    }
+    if (asprintf(&fn, "%s.mdb", db->hdb_name) == -1)
+	return krb5_enomem(context);
     if (mdb_env_create(&mi->e)) {
 	free(fn);
-	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
-	return ENOMEM;
+	return krb5_enomem(context);
     }
 
     tmp = krb5_config_get_int_default(context, NULL, 0, "kdc",
@@ -297,6 +294,7 @@ DB_open(krb5_context context, HDB *db, int flags, mode_t mode)
     if (tmp) {
 	ret = mdb_env_set_maxreaders(mi->e, tmp);
 	if (ret) {
+            free(fn);
 	    krb5_set_error_message(context, ret, "setting maxreaders on %s: %s",
 		db->hdb_name, mdb_strerror(ret));
 	    return ret;
@@ -310,6 +308,7 @@ DB_open(krb5_context context, HDB *db, int flags, mode_t mode)
 	maps *= KILO;
 	ret = mdb_env_set_mapsize(mi->e, maps);
 	if (ret) {
+            free(fn);
 	    krb5_set_error_message(context, ret, "setting mapsize on %s: %s",
 		db->hdb_name, mdb_strerror(ret));
 	    return ret;
@@ -317,16 +316,15 @@ DB_open(krb5_context context, HDB *db, int flags, mode_t mode)
     }
 
     ret = mdb_env_open(mi->e, fn, myflags, mode);
+    free(fn);
     if (ret) {
 fail:
 	mdb_env_close(mi->e);
 	mi->e = 0;
-	free(fn);
 	krb5_set_error_message(context, ret, "opening %s: %s",
 			      db->hdb_name, mdb_strerror(ret));
 	return ret;
     }
-    free(fn);
 
     ret = mdb_txn_begin(mi->e, NULL, MDB_RDONLY, &txn);
     if (ret)

lib/hx509/cms.c

@@ -863,7 +863,7 @@ hx509_cms_verify_signed(hx509_context context,
     }
 
     for (found_valid_sig = 0, i = 0; i < sd.signerInfos.len; i++) {
-	heim_octet_string signed_data;
+	heim_octet_string signed_data = { 0, 0 };
 	const heim_oid *match_oid;
 	heim_oid decode_oid;
 
@@ -1024,8 +1024,10 @@ hx509_cms_verify_signed(hx509_context context,
 				       "Failed to verify signature in "
 				       "CMS SignedData");
 	}
-        if (signer_info->signedAttrs)
-	    free(signed_data.data);
+        if (signed_data.data != NULL && content->data != signed_data.data) {
+            free(signed_data.data);
+            signed_data.data = NULL;
+        }
 	if (ret)
 	    goto next_sigature;
 

lib/kadm5/ipropd_common.c

@@ -104,7 +104,7 @@ restarter(krb5_context context, size_t *countp)
 {
 #if defined(HAVE_FORK) && defined(HAVE_WAITPID)
     struct timeval tmout;
-    pid_t pid;
+    pid_t pid = -1;
     pid_t wpid = -1;
     int status;
     int fds[2];

lib/kadm5/ipropd_slave.c

@@ -911,7 +911,7 @@ main(int argc, char **argv)
 		continue;
 	    }
 
-            if (FD_ISSET(restarter_fd, &readset)) {
+            if (restarter_fd > -1 && FD_ISSET(restarter_fd, &readset)) {
                 if (verbose)
                     krb5_warnx(context, "slave restarter exited");
                 exit_flag = SIGTERM;

lib/kadm5/log.c

@@ -205,6 +205,9 @@ get_header(krb5_storage *sp, int peek, uint32_t *verp, uint32_t *tstampp,
 
     *verp = 0;
     *tstampp = 0;
+    if (opp != NULL)
+        *opp = kadm_nop;
+    *lenp = 0;
 
     off = krb5_storage_seek(sp, 0, SEEK_CUR);
     if (off < 0)
@@ -728,8 +731,7 @@ kadm5_log_reinit(kadm5_server_context *server_context, uint32_t vno)
 
     /* Write uber entry and truncation nop with version `vno` */
     log_context->version = vno;
-    ret = kadm5_log_nop(server_context, kadm_nop_plain);
-    return 0;
+    return kadm5_log_nop(server_context, kadm_nop_plain);
 }
 
 /* Close the server_context->log_context. */
@@ -1537,7 +1539,8 @@ kadm5_log_replay_modify(kadm5_server_context *context,
 	ent.entry.keys.val = malloc(len * sizeof(*ent.entry.keys.val));
 	if (ent.entry.keys.val == NULL) {
 	    krb5_set_error_message(context->context, ENOMEM, "out of memory");
-	    return ENOMEM;
+            ret = ENOMEM;
+	    goto out;
 	}
 	for (i = 0; i < ent.entry.keys.len; ++i) {
 	    ret = copy_Key(&log_ent.entry.keys.val[i],

lib/krb5/dcache.c

@@ -424,7 +424,6 @@ dcc_gen_new(krb5_context context, krb5_ccache *id)
 	dcc_close(context, *id);
 	return krb5_enomem(context);
     }
-    free(dc->name);
 
     fd = mkstemp(&name[1]);
     if (fd < 0) {
@@ -433,6 +432,7 @@ dcc_gen_new(krb5_context context, krb5_ccache *id)
     }
     close(fd);
 
+    free(dc->name);
     dc->name = name;
 
     return 0;
@@ -556,6 +556,7 @@ dcc_get_cache_first(krb5_context context, krb5_cc_cursor *cursor)
 
     name = copy_default_dcc_cache(context);
     if (name == NULL) {
+        free(iter);
 	krb5_set_error_message(context, KRB5_CC_FORMAT,
 			       N_("Can't generate DIR caches unless its the default type", ""));
 	return KRB5_CC_FORMAT;

lib/krb5/init_creds_pw.c

@@ -232,13 +232,11 @@ init_cred (krb5_context context,
     memset (cred, 0, sizeof(*cred));
 
     if (client)
-	krb5_copy_principal(context, client, &cred->client);
-    else {
-	ret = krb5_get_default_principal (context,
-					  &cred->client);
-	if (ret)
-	    goto out;
-    }
+	ret = krb5_copy_principal(context, client, &cred->client);
+    else
+	ret = krb5_get_default_principal(context, &cred->client);
+    if (ret)
+        goto out;
 
     if (start_time)
 	cred->times.starttime  = now + start_time;
@@ -532,6 +530,8 @@ change_password (krb5_context context,
     char *p;
     krb5_get_init_creds_opt *options;
 
+    heim_assert(prompter != NULL, "unexpected NULL prompter");
+
     memset (&cpw_cred, 0, sizeof(cpw_cred));
 
     ret = krb5_get_init_creds_opt_alloc(context, &options);
@@ -1933,15 +1933,14 @@ make_fast_ap_fxarmor(krb5_context context,
 
 
     ALLOC(fxarmor, 1);
-    if (fxarmor == NULL) {
-	ret = krb5_enomem(context);
-	goto out;
-    }
+    if (fxarmor == NULL)
+	return krb5_enomem(context);
 
     if (state->flags & KRB5_FAST_AP_ARMOR_SERVICE) {
 #ifdef WIN32
 	krb5_set_error_message(context, ENOTSUP, "Fast armor IPC service not supportted yet on Windows");
-	return ENOTSUP;
+	ret = ENOTSUP;
+        goto out;
 #else /* WIN32 */
 	KERB_ARMOR_SERVICE_REPLY msg;
 	krb5_data request, reply;
@@ -1949,7 +1948,8 @@ make_fast_ap_fxarmor(krb5_context context,
 	heim_base_once_f(&armor_service_once, &armor_service, fast_armor_init_ipc);
 	if (armor_service == NULL) {
 	    krb5_set_error_message(context, ENOENT, "Failed to open fast armor service");
-	    return ENOENT;
+            ret = ENOENT;
+	    goto out;
 	}
 
 	krb5_data_zero(&reply);
@@ -1961,7 +1961,7 @@ make_fast_ap_fxarmor(krb5_context context,
 	heim_release(send);
 	if (ret) {
 	    krb5_set_error_message(context, ret, "Failed to get armor service credential");
-	    return ret;
+	    goto out;
 	}
 
 	ret = decode_KERB_ARMOR_SERVICE_REPLY(reply.data, reply.length, &msg, NULL);
@@ -2116,6 +2116,8 @@ fast_wrap_req(krb5_context context, struct fast_state *state, KDC_REQ *req)
 					 0,
 					 &fxreq.u.armored_data.enc_fast_req);
 	krb5_data_free(&data);
+        if (ret)
+            goto out;
 
     } else {
 	krb5_data_free(&data);
@@ -2382,6 +2384,10 @@ krb5_init_creds_step(krb5_context context,
 		if (ctx->in_tkt_service != NULL && strcmp(ctx->in_tkt_service, "kadmin/changepw") == 0)
 		    goto out;
 
+                /* don't try to change password where then where none */
+                if (ctx->prompter == NULL)
+                    goto out;
+
 		ret = change_password(context,
 				      ctx->cred.client,
 				      ctx->password,

lib/krb5/pac.c

@@ -405,7 +405,7 @@ krb5_pac_get_types(krb5_context context,
 {
     size_t i;
 
-    *types = calloc(p->pac->numbuffers, sizeof(*types));
+    *types = calloc(p->pac->numbuffers, sizeof(**types));
     if (*types == NULL) {
 	*len = 0;
 	return krb5_enomem(context);
@@ -549,6 +549,8 @@ create_checksum(krb5_context context,
     if (cksumtype == (uint32_t)CKSUMTYPE_HMAC_MD5) {
 	ret = HMAC_MD5_any_checksum(context, key, data, datalen,
 				    KRB5_KU_OTHER_CKSUM, &cksum);
+        if (ret)
+            return ret;
     } else {
 	ret = krb5_crypto_init(context, key, 0, &crypto);
 	if (ret)

lib/krb5/scache.c

@@ -1194,7 +1194,6 @@ scc_get_cache_first(krb5_context context, krb5_cc_cursor *cursor)
     }
 
     ret = asprintf(&str, "SELECT name FROM %s", name);
-    free(name);
     if (ret < 0 || str == NULL) {
 	exec_stmt(context, ctx->db, ctx->drop, 0);
 	sqlite3_close(ctx->db);
@@ -1203,6 +1202,7 @@ scc_get_cache_first(krb5_context context, krb5_cc_cursor *cursor)
 	free(ctx);
 	return krb5_enomem(context);
     }
+    free(name);
 
     ret = prepare_stmt(context, ctx->db, &ctx->stmt, str);
     free(str);

lib/roken/rtbl.c

@@ -169,7 +169,7 @@ rtbl_new_row(rtbl_t table)
 	if(table->columns[c]->num_rows == max_rows)
 	    continue;
 	tmp = realloc(table->columns[c]->rows,
-		      max_rows * sizeof(table->columns[c]->rows));
+		      max_rows * sizeof(table->columns[c]->rows[0]));
 	if(tmp == NULL)
 	    return ENOMEM;
 	table->columns[c]->rows = tmp;