diff options
Diffstat (limited to 'tools/captcha.sh')
| -rwxr-xr-x | tools/captcha.sh | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tools/captcha.sh b/tools/captcha.sh new file mode 100755 index 000000000..4d405673a --- /dev/null +++ b/tools/captcha.sh @@ -0,0 +1,52 @@ +#!/bin/sh + +INPUT=$1 + +WAVE1_AMPLITUDE=$((2 + $RANDOM % 5)) +WAVE1_LENGTH=$((50 + $RANDOM % 25)) +WAVE2_AMPLITUDE=$((2 + $RANDOM % 5)) +WAVE2_LENGTH=$((50 + $RANDOM % 25)) +WAVE3_AMPLITUDE=$((2 + $RANDOM % 5)) +WAVE3_LENGTH=$((50 + $RANDOM % 25)) +W1_LINE_START_Y=$((10 + $RANDOM % 40)) +W1_LINE_STOP_Y=$((10 + $RANDOM % 40)) +W2_LINE_START_Y=$((10 + $RANDOM % 40)) +W2_LINE_STOP_Y=$((10 + $RANDOM % 40)) +W3_LINE_START_Y=$((10 + $RANDOM % 40)) +W3_LINE_STOP_Y=$((10 + $RANDOM % 40)) + +B1_LINE_START_Y=$(($RANDOM % 40)) +B1_LINE_STOP_Y=$(($RANDOM % 40)) +B2_LINE_START_Y=$(($RANDOM % 40)) +B2_LINE_STOP_Y=$(($RANDOM % 40)) +#B3_LINE_START_Y=$(($RANDOM % 40)) +#B3_LINE_STOP_Y=$(($RANDOM % 40)) + +B1_LINE_START_X=$(($RANDOM % 20)) +B1_LINE_STOP_X=$((100 + $RANDOM % 40)) +B2_LINE_START_X=$(($RANDOM % 20)) +B2_LINE_STOP_X=$((100 + $RANDOM % 40)) +#B3_LINE_START_X=$(($RANDOM % 20)) +#B3_LINE_STOP_X=$((100 + $RANDOM % 40)) + +ROLL_X=$(($RANDOM % 40)) + +convert -size 180x60 xc:none -pointsize 40 \ + \( -clone 0 -fill white \ + -stroke black -strokewidth 4 -annotate +0+40 "$INPUT" \ + -stroke white -strokewidth 2 -annotate +0+40 "$INPUT" \ + -roll +$ROLL_X+0 \ + -wave "$WAVE1_AMPLITUDE"x"$WAVE1_LENGTH" \ + -roll -$ROLL_X+0 \) \ + \( -clone 0 -stroke black \ + -strokewidth 1 -draw \ + "line $B1_LINE_START_X,$B1_LINE_START_Y $B1_LINE_STOP_X,$B1_LINE_STOP_Y" \ + -strokewidth 1 -draw \ + "line $B2_LINE_START_X,$B2_LINE_START_Y $B2_LINE_STOP_X,$B2_LINE_STOP_Y" \ + -wave "$WAVE2_AMPLITUDE"x"$WAVE2_LENGTH" \) \ + \( -clone 0 -stroke white \ + -strokewidth 2 -draw "line 0,$W1_LINE_START_Y 140,$W1_LINE_STOP_Y" \ + -strokewidth 2 -draw "line 0,$W2_LINE_START_Y 140,$W2_LINE_STOP_Y" \ + -strokewidth 2 -draw "line 0,$W3_LINE_START_Y 140,$W3_LINE_STOP_Y" \ + -wave "$WAVE3_AMPLITUDE"x"$WAVE3_LENGTH" \) \ + -flatten -crop 140x60 +repage -quality 90 -depth 8 png:- |