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-rw-r--r--Makefile11
-rw-r--r--captcha.c51
-rw-r--r--captcha.h17
-rw-r--r--code.pngbin0 -> 5948 bytes
4 files changed, 79 insertions, 0 deletions
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..7e71228
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,11 @@
1all:
2 $(CC) -Wall -g -lgd -o captcha -Wl,-rpath=libs/ -L../ -l:libfile_reader.so captcha.c
3 $(CC) -Wall -g -shared -fPIC -lgd -L../ -l:libfile_reader.so -o captcha.so captcha.c
4 #$(CC) -Wall -g -lgd -o captcha ../file_reader/file_reader.a captcha.c
5
6libs:
7 #$(CC) -Wall -g -shared -fPIC -lgd -Wl,-rpath=../file/reader/ -L../file/reader/ -l:file_reader.so -o captcha.so captcha.c
8 #$(CC) -Wall -g -lgd -Wl,-rpath=../file/reader/ -L../file/reader/ -o captcha ../file/reader/file_reader.a captcha.c
9
10strip:
11 strip -s *.so
diff --git a/captcha.c b/captcha.c
new file mode 100644
index 0000000..18f7d99
--- /dev/null
+++ b/captcha.c
@@ -0,0 +1,51 @@
1#include "captcha.h"
2
3int captcha_print(char* text)
4{
5 File* file = file_open("code.png");
6
7 gdImagePtr im = gdImageCreateFromPngPtr(file->size, file->data);
8 gdImageColorTransparent(im, gdImageColorAllocate(im, 255, 255, 255));
9
10 char text_width = strlen(text);
11 float letter_width = ((float) gdImageSX(im) / 26.00);
12
13 int image_width = letter_width * text_width;
14 int image_height = gdImageSY(im);
15
16 gdImagePtr image = gdImageCreateTrueColor(image_width, image_height);
17 gdImageColorTransparent(image, gdImageColorAllocate(image, 0, 0, 0));
18
19 srand(time(NULL) * (*text));
20 int i;
21 for(i=0; i<=10; i++)
22 {
23 int x1 = ((double) rand() / RAND_MAX) * image_width;
24 int y1 = ((double) rand() / RAND_MAX) * image_height;
25 gdImageFilledArc(image, x1, y1, x1 + 10, y1 + 10, ((double) rand() / RAND_MAX) * 360, ((double) rand() / RAND_MAX) * 360, gdImageColorAllocate(image, 100 + (rand() * 155), 150 + (rand() * 105), 150 + (rand() * 105)), gdEdged);
26 }
27
28 int pos;
29 for(pos=0; text[pos]!='\0'; pos++)
30 {
31 //printf("[pos:%d] %d\n", pos, (text[pos] - 65) );
32 gdImageCopyMerge(image, im,
33 letter_width * pos, 0,
34 ((text[pos] - 65) * letter_width), 0,
35 letter_width, gdImageSY(image), 50);
36 }
37
38 puts("content-type: image/jpeg\n");
39 gdImageJpeg(image, stdout, 80);
40
41 gdImageDestroy(image);
42 gdImageDestroy(im);
43
44 file_close(file);
45 return EXIT_SUCCESS;
46}
47
48int main()
49{
50 return captcha_print("HALLELUJA");
51}
diff --git a/captcha.h b/captcha.h
new file mode 100644
index 0000000..2aa6475
--- /dev/null
+++ b/captcha.h
@@ -0,0 +1,17 @@
1#ifndef CAPTCHA_H
2#define CAPTCHA_H
3
4#include <stdio.h>
5#include <stdlib.h>
6#include <err.h>
7
8#include <time.h> // used for rand()
9#include <string.h>
10
11#include "gd.h"
12#include "../file_reader/file_reader.h"
13
14
15int captcha_print(char* text);
16
17#endif
diff --git a/code.png b/code.png
new file mode 100644
index 0000000..df904ae
--- /dev/null
+++ b/code.png
Binary files differ
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