Merge pull request #3614 from pks-t/pks/coverity-fixes

Coverity fixes

script/user_nodefs.h

@@ -6,3 +6,22 @@
  */
 
 #nodef GITERR_CHECK_ALLOC(ptr) if (ptr == NULL) { __coverity_panic__(); }
+
+#nodef GITERR_CHECK_ALLOC_ADD(out, one, two) \
+	if (GIT_ADD_SIZET_OVERFLOW(out, one, two)) { __coverity_panic__(); }
+
+#nodef GITERR_CHECK_ALLOC_ADD3(out, one, two, three) \
+	if (GIT_ADD_SIZET_OVERFLOW(out, one, two) || \
+		GIT_ADD_SIZET_OVERFLOW(out, *(out), three)) { __coverity_panic__(); }
+
+#nodef GITERR_CHECK_ALLOC_ADD4(out, one, two, three, four) \
+	if (GIT_ADD_SIZET_OVERFLOW(out, one, two) || \
+		GIT_ADD_SIZET_OVERFLOW(out, *(out), three) || \
+		GIT_ADD_SIZET_OVERFLOW(out, *(out), four)) { __coverity_panic__(); }
+
+#nodef GITERR_CHECK_ALLOC_MULTIPLY(out, nelem, elsize) \
+	if (GIT_MULTIPLY_SIZET_OVERFLOW(out, nelem, elsize)) { __coverity_panic__(); }
+
+#nodef GITERR_CHECK_VERSION(S,V,N) if (giterr__check_version(S,V,N) < 0)  { __coverity_panic__(); }
+
+#nodef LOOKS_LIKE_DRIVE_PREFIX(S) (strlen(S) >= 2 && git__isalpha((S)[0]) && (S)[1] == ':')

src/netops.c

@@ -261,6 +261,10 @@ int gitno_extract_url_parts(
 		*path = git__substrdup(_path, u.field_data[UF_PATH].len);
 		GITERR_CHECK_ALLOC(*path);
 	} else {
+		git__free(*port);
+		*port = NULL;
+		git__free(*host);
+		*host = NULL;
 		giterr_set(GITERR_NET, "invalid url, missing path");
 		return GIT_EINVALIDSPEC;
 	}

src/signature.c

@@ -79,10 +79,9 @@ int git_signature_new(git_signature **sig_out, const char *name, const char *ema
 	GITERR_CHECK_ALLOC(p);
 
 	p->name = extract_trimmed(name, strlen(name));
+	GITERR_CHECK_ALLOC(p->name);
 	p->email = extract_trimmed(email, strlen(email));
-
-	if (p->name == NULL || p->email == NULL)
-		return -1; /* oom */
+	GITERR_CHECK_ALLOC(p->email);
 
 	if (p->name[0] == '\0' || p->email[0] == '\0') {
 		git_signature_free(p);

src/transports/smart_pkt.c

@@ -271,6 +271,7 @@ static int ok_pkt(git_pkt **out, const char *line, size_t len)
 	line += 3; /* skip "ok " */
 	if (!(ptr = strchr(line, '\n'))) {
 		giterr_set(GITERR_NET, "Invalid packet line");
+		git__free(pkt);
 		return -1;
 	}
 	len = ptr - line;
@@ -314,6 +315,8 @@ static int ng_pkt(git_pkt **out, const char *line, size_t len)
 	line = ptr + 1;
 	if (!(ptr = strchr(line, '\n'))) {
 		giterr_set(GITERR_NET, "Invalid packet line");
+		git__free(pkt->ref);
+		git__free(pkt);
 		return -1;
 	}
 	len = ptr - line;

src/transports/smart_protocol.c

@@ -108,6 +108,7 @@ static int append_symref(const char **out, git_vector *symrefs, const char *ptr)
 		if (giterr_last()->klass != GITERR_NOMEMORY)
 			goto on_invalid;
 
+		git__free(mapping);
 		return error;
 	}
 
@@ -120,6 +121,7 @@ static int append_symref(const char **out, git_vector *symrefs, const char *ptr)
 on_invalid:
 	giterr_set(GITERR_NET, "remote sent invalid symref");
 	git_refspec__free(mapping);
+	git__free(mapping);
 	return -1;
 }