tag-photo.bash script

a quick hack for skyhook-based geotagging of uploaded photos

Signed-off-by: Michael Krelin <hacker@klever.net>

2 files changed, 54 insertions, 1 deletions

diff --git a/doc/Makefile.am b/doc/Makefile.am
index ca56ef3..e171b0b 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -2,3 +2,3 @@ man_MANS=iiid.8
 doc_DATA = 000000000000.conf
-pkglib_SCRIPTS = on-upload-photo.bash
+pkglib_SCRIPTS = on-upload-photo.bash tag-photo.bash
 
diff --git a/doc/tag-photo.bash b/doc/tag-photo.bash
new file mode 100644
index 0000000..83f10fd
--- a/dev/null
+++ b/doc/tag-photo.bash
@@ -0,0 +1,53 @@
+#!/bin/bash
+JPG="$1"
+LOG="$2"
+
+( type sqlite3 && type xmlstarlet && type exiftool && type gawk && type curl ) &>/dev/null \
+|| { echo "couldn't find something useful" ; exit 1 ; }
+
+[[ -z "$WPS_U" ]] && WPS_U="*PUT_ME_HERE*"
+[[ -z "$WPS_R" ]] && WPS_R="*PUT_ME_HERE*"
+[[ -z "$LCACHE" ]] && LCACHE="/tmp/iii-locations-cache.sqlite"
+wps_locate() {
+    local APS="$1"
+    [[ -z "$APS" ]] && return;
+    local APSKEY="$(md5sum <<<"$APS"|gawk -- '{print $1}')"
+    local RV=""
+    [[ -r "$LCACHE" ]] \
+    && RV="$(sqlite3 "$LCACHE" "SELECT v FROM lc WHERE k='$APSKEY'")" \
+    || sqlite3 "$LCACHE" 'CREATE TABLE lc ( k varchar PRIMARY KEY, v varchar )'
+    [[ -z "$RV" ]] || { echo "$RV" ; return 0 ; }
+    X="$(curl -s -H 'Content-Type: text/xml' -d "<?xml version='1.0'?><LocationRQ xmlns='http://skyhookwireless.com/wps/2005' version='2.6' street-address-lookup='none'><authentication version='2.0'><simple><username>$WPS_U</username><realm>$WPS_R</realm></simple></authentication>$APS</LocationRQ>" https://api.skyhookwireless.com/wps2/location)"
+    RV="$(xmlstarlet sel -N w=http://skyhookwireless.com/wps/2005 -t -m '/w:LocationRS/w:location/*' -o wl_ -v 'name()' -o '=' -v 'text()' -o ' ' - <<<"$X")"
+    sqlite3 "$LCACHE" "INSERT INTO lc (k,v) VALUES ('$APSKEY','$RV')" &>/dev/null
+    echo "$RV"
+    return 0
+}
+
+ts="$(TZ=UTC date +%s -d "$(exiftime -tc "$JPG"|cut -d\  -f3-|sed -e s/:/-/ -e s/:/-/)")"
+APS="$(gawk <"$LOG" -F, -v ts="$ts" -- '
+BEGIN { nap=0; }
+$3=="NEWPHOTO" && $2>ts { pdt=$1; nextfile; }
+$3=="AP" || $3=="NEWAP" {
+    n = ($4 in ap) ? ap[$4] : nap;
+    ap_dt[n] = $1; ap_ap[n]=$4; ap_rssi[n]=$5;
+    if(n==nap) ap[$4] = nap++;
+}
+$3=="POWERON" { nap=0; delete ap_dt; delete ap_ap; delete ap_rssi; delete ap; }
+END {
+    for(i=0;i<nap;++i) {
+	if((pdt-ap_dt[i])>1800) continue;
+	printf("<access-point><mac>%s</mac><signal-strength>-%d</signal-strength></access-point>\n",ap_ap[i],ap_rssi[i]);
+    }
+}
+')"
+
+[[ -z "$APS" ]] && { echo "no access points" ; exit ; }
+WL="$(wps_locate "$APS")"
+[[ -z "$WL" ]] && { echo "couldn't find location" ; exit ; }
+eval "$WL"
+[[ -z "$wl_latitude" || -z "$wl_longitude" || -z "$wl_hpe" ]] && { echo "invalid location ($WL)"; exit; }
+[[ "${wl_latitude:0:1}" = '-' ]] && wl_latitude="${wl_latitude:1}" wl_latitude_ref=S || wl_latitude_ref=N
+[[ "${wl_longitude:0:1}" = '-' ]] && wl_longitude="${wl_longitude:1}" wl_longitude_ref=W || wl_longitude_ref=E
+exiftool -GPSLatitude="$wl_latitude" -GPSLongitude="$wl_longitude" -GPSLatitudeRef=$wl_latitude_ref -GPSLongitudeRef=$wl_longitude_ref -GPSVersionID=0.0.2.2 -GPSProcessingMethod=WLAN "$JPG"
+# XXX: exiftool doesn't like it  -GPSHPositioningError="$wl_hpe"