From 8048e6e1fbc881cbfb157fa7ed13007c2a6dd845 Mon Sep 17 00:00:00 2001
From: Joseph Graham <joseph@fibreglass.tunachunks>
Date: Sun, 15 Jun 2014 16:15:01 +0100
Subject: Grr, 0% stuff, man.

---
 pacman2pacman-get | 54 +++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 49 insertions(+), 5 deletions(-)

diff --git a/pacman2pacman-get b/pacman2pacman-get
index 5e982c1..e821e1b 100644
--- a/pacman2pacman-get
+++ b/pacman2pacman-get
@@ -141,18 +141,65 @@ then
 
     # Display a progress bar until it's finished and then hardlink it to
     # the right place.
-    progress='0%'
+    progress='0.0%'
 
     echo -n "Pacman2pacman p2p download: ${pname}: ${progress}"
 
+    count=0
+
+    declare -a last_webseed_check=(0 'working')
+
+    webseed_check_after='100'
+
     until [[ "${progress}" == '100%' ]]
     do
         progress=$(transmission-remote -t "${id}" -i | grep 'Percent Done:')
         progress="${progress##* }"  # Remove stuff we don't want
 
+        # If we're still at 0.0% after ${webseed_check_after} attempts
+        # then we check if the webseed is actually valid.
+        if (( count >= webseed_check_after )) && [[ "${progress}" == '0.0%' ]]
+        then
+            # Find out if we already checked recently.
+            if (( (last_webseed_check[0] + (webseed_check_after / 2)) > count ))
+            then
+                if [[ last_webseed_check[1] == 'broken' ]]
+                then
+                    # Just set the message without checking.
+                    progress='0.0% Warning: Webseed dead...'
+                else
+                    # We don't need to do anything
+                    true
+                fi
+            else
+                if ! $(curl -IL "${url}" | grep '200 OK' &>/dev/null)
+                then
+                    # The webseed seems to be invalid so we print an error
+                    # message and exit.
+
+                    progress='0.0% Warning: Webseed dead...' # This most
+                    # likely means
+                    # the user
+                    # needs to run
+                    # pacman -Sy,
+                    # or that their
+                    # internet is
+                    # down.
+                    last_webseed_check[0]="${count}"
+                    last_webseed_check[1]="broken"
+                else
+                    # The webseed is valid so we just record that we checked
+                    last_webseed_check[0]="${count}"
+                    last_webseed_check[1]="working"
+                fi
+            fi
+        fi
+
         printf "\rPacman2pacman p2p download: %s: %s   " "${pname}" "${progress}"
 
         sleep 0.7
+
+        (( count ++ ))
     done
 
     echo
@@ -181,7 +228,7 @@ else
 
     mod_time=$(stat -c %Y "/srv/pacman2pacman/dbcache/${filename##*/}" 2>/dev/null)
 
-    progress='0%'
+    progress='0.0%'
 
     echo -n "Pacman2pacman http download: ${pname}: ${progress}"
 
@@ -214,9 +261,6 @@ else
             # start of the download. This should fix it.
             [[ "${progress}" == '100.0%' ]] && continue
 
-            # For consistency.
-            [[ "${progress}" == '0.0%' ]] && progress='0%'
-
             printf "\rPacman2pacman http download: %s: %s   " "${pname}" "${progress}"
         done
 
-- 
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