prevent spamming error log

[shellwiki] / multipart.sh

diff --git a/multipart.sh b/multipart.sh
old mode 100644 (file)
new mode 100755 (executable)
index 2c38a37..7c0d5dd
--- a/multipart.sh
+++ b/multipart.sh
@@ -34,13 +34,10 @@ multipart_cache() {
 }
 
 multipart(){
-  local name="$1"
+  local name="$1" count="${2:-1}"
   local formdata state=begin
 
-  debug "Boundary: $multipart_boundary"
-  debug "File: $multipart_cachefile"
-
-  while read -r formdata; do case "$formdata" in
+  while IFS='' read -r formdata; do case "$formdata" in
     "--${multipart_boundary}--${CR}")
       [ $state = data ] && return 0 \
                         || return 1
@@ -50,15 +47,45 @@ multipart(){
                         || state=header
       ;;
     "Content-Disposition: form-data; name=\"${name}\""*"${CR}")
-      [ $state = header ] && state=dheader
+      [ $state = header -a $count -eq 1 ] && state=dheader
+      [ $state = header -a $count -gt 1 ] && count=$((count - 1))
       [ $state = data ] && printf "%s\n" "$formdata"
       ;;
     "${CR}")
-      [ $state = dheader ] && state=data
+      if [ $state = dheader ]; then
+        # Do not use `sed -n` (or busybox sed will "convert" NULL to LF)
+        sed "/--${multipart_boundary}\(--\)\?${CR}/{x;q;}" \
+        | head -c-3
+        return 0;
+      fi
       [ $state = header ] && state=junk
       ;;
-    *)
-      [ $state = data ] && printf "%s\n" "$formdata"
+  esac; done <"${multipart_cachefile}"
+}
+
+multipart_filename(){
+  local name="$1" count="${2:-1}"
+  local formdata state=begin
+
+  while read -r formdata; do case "$formdata" in
+    "--${multipart_boundary}--${CR}")
+      return 1
+      ;;
+    "--${multipart_boundary}${CR}")
+      state=header
+      ;;
+    "Content-Disposition: form-data; name=\"${name}\"; filename=\""*"\""*"${CR}")
+      [ $state = header -a $count -eq 1 ] && break
+      [ $state = header -a $count -gt 1 ] && count=$((count - 1))
+      ;;
+    "${CR}")
+      [ $state = header ] && state=junk
       ;;
   esac; done <"${multipart_cachefile}"
+
+  filename="${formdata#*; filename=\"}"
+  filename="${filename%%\"${CR}}"
+  filename="${filename%%\";*}"
+
+  HEX_DECODE % "$filename"
 }