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Move key visualization function into base functions

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This commit is contained in:
mjentsch 2015-01-02 14:09:10 +01:00
parent 2f752c7fd5
commit 8881011fac
3 changed files with 53 additions and 51 deletions
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51
telegram-base.c
View file

@ -35,6 +35,7 @@
#include <telegram-purple.h>
#include <msglog.h>
#include <tgp-2prpl.h>
#include "lodepng.h"
#define DC_SERIALIZED_MAGIC 0x868aa81d
#define STATE_FILE_MAGIC 0x28949a93
@ -440,3 +441,53 @@ void chat_add_all_users (PurpleConversation *pc, struct tgl_chat *chat) {
p2tgl_conv_add_user(pc, *uid, NULL, flags, 0);
}
}
int generate_ident_icon (unsigned char* sha1_key)
{
int colors[4] = {
0xffffff,
0xd5e6f3,
0x2d5775,
0x2f99c9
};
unsigned img_size = 160;
unsigned char* image = (unsigned char*)malloc (img_size * img_size * 4);
unsigned x, y, i, j, idx = 0;
int bitpointer = 0;
for (y = 0; y < 8; y++)
{
unsigned offset_y = y * img_size * 4 * (img_size / 8);
for (x = 0; x < 8; x++)
{
int offset = bitpointer / 8;
int shiftOffset = bitpointer % 8;
int val = sha1_key[offset + 3] << 24 | sha1_key[offset + 2] << 16 | sha1_key[offset + 1] << 8 | sha1_key[offset];
idx = abs((val >> shiftOffset) & 3) % 4;
bitpointer += 2;
unsigned offset_x = x * 4 * (img_size / 8);
for (i = 0; i < img_size / 8; i++)
{
unsigned off_y = offset_y + i * img_size * 4;
for (j = 0; j < img_size / 8; j++)
{
unsigned off_x = offset_x + j * 4;
image[off_y + off_x + 0] = (colors[idx] >> 16) & 0xFF;
image[off_y + off_x + 1] = (colors[idx] >> 8) & 0xFF;
image[off_y + off_x + 2] = colors[idx] & 0xFF;
image[off_y + off_x + 3] = 0xFF;
}
}
}
}
unsigned char* png;
size_t pngsize;
unsigned error = lodepng_encode32(&png, &pngsize, image, img_size, img_size);
int imgStoreId = -1;
if(!error)
{
imgStoreId = purple_imgstore_add_with_id(g_memdup(png, pngsize), pngsize, NULL);
}
g_free(image);
g_free(png);
return imgStoreId;
}

1
telegram-base.h
View file

@ -29,4 +29,5 @@ PurpleConversation *chat_show (PurpleConnection *gc, int id);
int chat_add_message (struct tgl_state *TLS, struct tgl_message *M, char *text);
void chat_add_all_users (PurpleConversation *pc, struct tgl_chat *chat);
void request_code_entered (gpointer data, const gchar *code);
int generate_ident_icon(unsigned char* sha1_key);
#endif

52
telegram-purple.c
View file

@ -57,13 +57,11 @@
#include "telegram-base.h"
#include "telegram-purple.h"
#include "msglog.h"
#include "lodepng.h"
PurplePlugin *_telegram_protocol = NULL;
PurpleGroup *tggroup;
const char *config_dir = ".telegram-purple";
const char *pk_path = "/etc/telegram-purple/server.pub";
int generate_ident_icon(unsigned char* sha1_key);
void tgprpl_login_on_connected();
void on_user_get_info (struct tgl_state *TLS, void *show_info, int success, struct tgl_user *U);
@ -538,55 +536,7 @@ void on_chat_get_info (struct tgl_state *TLS, void *extra, int success, struct t
// This function generates a png image to visulize the sha1 key from an encrypted chat.
int generate_ident_icon(unsigned char* sha1_key)
{
int colors[4] = {
0xffffff,
0xd5e6f3,
0x2d5775,
0x2f99c9
};
unsigned img_size = 160;
unsigned char* image = (unsigned char*)malloc(img_size * img_size * 4);
unsigned x, y, i, j, idx = 0;
int bitpointer = 0;
for (y = 0; y < 8; y++)
{
unsigned offset_y = y * img_size * 4 * (img_size / 8);
for (x = 0; x < 8; x++)
{
int offset = bitpointer / 8;
int shiftOffset = bitpointer % 8;
int val = sha1_key[offset + 3] << 24 | sha1_key[offset + 2] << 16 | sha1_key[offset + 1] << 8 | sha1_key[offset];
idx = abs((val >> shiftOffset) & 3) % 4;
bitpointer += 2;
unsigned offset_x = x * 4 * (img_size / 8);
for (i = 0; i < img_size / 8; i++)
{
unsigned off_y = offset_y + i * img_size * 4;
for (j = 0; j < img_size / 8; j++)
{
unsigned off_x = offset_x + j * 4;
image[off_y + off_x + 0] = (colors[idx] >> 16) & 0xFF;
image[off_y + off_x + 1] = (colors[idx] >> 8) & 0xFF;
image[off_y + off_x + 2] = colors[idx] & 0xFF;
image[off_y + off_x + 3] = 0xFF;
}
}
}
}
unsigned char* png;
size_t pngsize;
unsigned error = lodepng_encode32(&png, &pngsize, image, img_size, img_size);
int imgStoreId = -1;
if(!error)
{
imgStoreId = purple_imgstore_add_with_id(g_memdup(png, pngsize), pngsize, NULL);
}
g_free(image);
g_free(png);
return imgStoreId;
}
void on_ready (struct tgl_state *TLS) {
debug ("on_ready().\n");