sogrep: fail if links database cannot be retrieved

If the links database (for some reason) does not exist on the mirror,
curl will save the html 404 page as ${repo}.links.tar.gz in the cache,
and sogrep will later fail with a decompression error from bsdtar.

This patch adds -f to curl so it doesn't save the error page, and exit
after displaying an error in such case.

Fixes !88

Signed-off-by: Haochen Tong <i@hexchain.org>
Signed-off-by: Levente Polyak <anthraxx@archlinux.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/sogrep.in b/sogrep.in
index dfdd104..d1ca1a1 100755
--- a/sogrep.in
+++ b/sogrep.in
@@ -36,8 +36,11 @@ recache() {
             local dbpath=${SOCACHE_DIR}/${arch}/${repo}.links.tar.gz
             mkdir -p "${dbpath%/*}"
             (( VERBOSE )) && echo "Fetching ${repo}.links.tar.gz..."
-            curl -LR "${verbosity}" -o "${dbpath}" -z "${dbpath}" \
-                "${SOLINKS_MIRROR}/${repo}/os/${arch}/${repo}.links.tar.gz"
+            if ! curl -fLR "${verbosity}" -o "${dbpath}" -z "${dbpath}" \
+                    "${SOLINKS_MIRROR}/${repo}/os/${arch}/${repo}.links.tar.gz"; then
+                echo "error: failed to download links database for repo ${repo}"
+                exit 1
+            fi
         done
     done
 }