From 2edbc4c805d61d859f5e2af84293cdfb051f7f56 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Wed, 25 Aug 2021 21:20:39 +0100
Subject: [PATCH] auc: update to version 0.2.3

 * use regular verrevcmp for branch names, fixes update indication
 * break out usage() from main() function
 * require '-f' in case installed package is missing in remote lists
 * don't use ENETUNREACH for unlrelated error

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 utils/auc/Makefile  |  2 +-
 utils/auc/src/auc.c | 58 +++++++++++++++++++++++++++++----------------
 2 files changed, 38 insertions(+), 22 deletions(-)

diff --git a/utils/auc/Makefile b/utils/auc/Makefile
index 7d5f883443..2160487652 100644
--- a/utils/auc/Makefile
+++ b/utils/auc/Makefile
@@ -5,7 +5,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=auc
-PKG_VERSION:=0.2.2
+PKG_VERSION:=0.2.3
 PKG_RELEASE:=$(AUTORELEASE)
 PKG_LICENSE:=GPL-3.0
 
diff --git a/utils/auc/src/auc.c b/utils/auc/src/auc.c
index 227cbfdb82..2b7a430c72 100644
--- a/utils/auc/src/auc.c
+++ b/utils/auc/src/auc.c
@@ -443,7 +443,9 @@ static int openwrt_release_verrevcmp(const char *ver1, const char *ver2)
 	char mver1[16], mver2[16];
 
 	strncpy(mver1, ver1, sizeof(mver1) - 1);
+	mver1[sizeof(mver1) - 1] = '\0';
 	strncpy(mver2, ver2, sizeof(mver2) - 1);
+	mver2[sizeof(mver2) - 1] = '\0';
 
 	release_replace_rc(mver1);
 	release_replace_rc(mver2);
@@ -1544,6 +1546,31 @@ static inline bool status_delay(const char *status)
 	       !strcmp(API_STATUS_STARTED, status);
 }
 
+static void usage(const char *arg0)
+{
+	fprintf(stdout, "%s: Attended sysUpgrade CLI client\n", arg0);
+	fprintf(stdout, "Usage: auc [-b <branch>] [-B <ver>] [-c] %s[-f] [-h] [-r] [-y]\n",
+#ifdef AUC_DEBUG
+"[-d] "
+#else
+""
+#endif
+		);
+	fprintf(stdout, " -b <branch>\tuse specific release branch\n");
+	fprintf(stdout, " -B <ver>\tuse specific release version\n");
+	fprintf(stdout, " -c\t\tonly check if system is up-to-date\n");
+#ifdef AUC_DEBUG
+	fprintf(stdout, " -d\t\tenable debugging output\n");
+#endif
+	fprintf(stdout, " -f\t\tuse force\n");
+	fprintf(stdout, " -h\t\toutput help\n");
+	fprintf(stdout, " -r\t\tcheck only for release upgrades\n");
+	fprintf(stdout, " -F <fstype>\toverride filesystem type\n");
+	fprintf(stdout, " -y\t\tdon't wait for user confirmation\n");
+
+}
+
+
 /* this main function is too big... todo: split */
 int main(int args, char *argv[]) {
 	static struct blob_buf checkbuf, infobuf, reqbuf, imgbuf, upgbuf;
@@ -1570,25 +1597,7 @@ int main(int args, char *argv[]) {
 	while (argc<args) {
 		if (!strncmp(argv[argc], "-h", 3) ||
 		    !strncmp(argv[argc], "--help", 7)) {
-			fprintf(stdout, "%s: Attended sysUpgrade CLI client\n", argv[0]);
-			fprintf(stdout, "Usage: auc [-b <branch>] [-B <ver>] [-c] %s[-f] [-h] [-r] [-y]\n",
-#ifdef AUC_DEBUG
-"[-d] "
-#else
-""
-#endif
-				);
-			fprintf(stdout, " -b <branch>\tuse specific release branch\n");
-			fprintf(stdout, " -B <ver>\tuse specific release version\n");
-			fprintf(stdout, " -c\t\tonly check if system is up-to-date\n");
-#ifdef AUC_DEBUG
-			fprintf(stdout, " -d\t\tenable debugging output\n");
-#endif
-			fprintf(stdout, " -f\t\tuse force\n");
-			fprintf(stdout, " -h\t\toutput help\n");
-			fprintf(stdout, " -r\t\tcheck only for release upgrades\n");
-			fprintf(stdout, " -F <fstype>\toverride filesystem type\n");
-			fprintf(stdout, " -y\t\tdon't wait for user confirmation\n");
+			usage(argv[0]);
 			return 0;
 		}
 
@@ -1680,7 +1689,7 @@ int main(int args, char *argv[]) {
 			rootfs_type, target_fstype);
 
 	if (request_branches(!(target_branch || target_version))) {
-		rc=-ENETUNREACH;
+		rc=-ENODATA;
 		goto freeboard;
 	}
 
@@ -1692,7 +1701,7 @@ int main(int args, char *argv[]) {
 
 	fprintf(stdout, "Available: %s %s\n", branch->version_number, branch->version_code);
 
-	revcmp = openwrt_release_verrevcmp(revision, branch->version_code);
+	revcmp = verrevcmp(revision, branch->version_code);
 	if (revcmp < 0)
 			upg_check |= PKG_UPGRADE;
 	else if (revcmp > 0)
@@ -1702,6 +1711,7 @@ int main(int args, char *argv[]) {
 		goto freebranches;
 
 	if (release_only && !(upg_check & PKG_UPGRADE)) {
+		fprintf(stderr, "Nothing to be updated. Use '-f' to force.\n");
 		rc=0;
 		goto freebranches;
 	}
@@ -1724,6 +1734,12 @@ int main(int args, char *argv[]) {
 		goto freebranches;
 	};
 
+	if (!force && (upg_check & PKG_NOT_FOUND)) {
+		fprintf(stderr, "Not all installed packages found in remote lists. Use '-f' to force.\n");
+		rc=-ENOTRECOVERABLE;
+		goto freebranches;
+	};
+
 	if (check_only)
 		goto freebranches;