Geek as a platform

Running telegram-cli in cygwin

Telegram is a really interesting messaging application... It is secure (well, let's say secure enough), fast and multiplatform... Even there is a CLI client!

I tried to compile the telegram-cli in my cygwin64 earlier today following their documentation, and I came across a couple of issues.

1) Patching failed:

I couldn't patch Makefile and Hunk #1 failed in loop.c as well:

20:34:26@tg$ patch -p1 < telegram-cli-cygwin.patch
patching file Makefile
Hunk #1 FAILED at 4.
1 out of 1 hunk FAILED -- saving rejects to file Makefile.rej
patching file loop.c
Hunk #1 FAILED at 383.
Hunk #2 succeeded at 737 with fuzz 2 (offset 103 lines).
1 out of 2 hunks FAILED -- saving rejects to file loop.c.rej

Probably the patch file is not updated with the latest telegram-cli changes, so I dediced to patch it manually...

I updated the first lines of Makefile with the changes stated in the patch file:

1 srcdir=.
2
3 CFLAGS=-g -O2
4 LDFLAGS= -L/usr/local/lib -L/usr/lib -L/usr/lib -L/usr/lib
5 CPPFLAGS= -I/usr/local/include -I/usr/include -I/usr/include  -I/usr/include/python3.4m -I/usr/include
6 DEFS=-DHAVE_CONFIG_H
7
8 COMPILE_FLAGS=${CFLAGS} ${CPFLAGS} ${CPPFLAGS} ${DEFS} -Wall -Werror -Wextra -Wno-missing-field-initializers 
   -Wno-deprecated-declarations -fno-strict-aliasing -fn      o-omit-frame-pointer -ggdb -Wno-unused-parameter
9 EXTRA_LIBS=-ljansson -lconfig -lz -levent -lm   -lreadline -llua-5.2  -lpython3.4m -lssl -lcrypto
10 LOCAL_LDFLAGS=-ggdb -levent ${EXTRA_LIBS} -ldl -lpthread -lutil
11 LINK_FLAGS=${LDFLAGS} ${LOCAL_LDFLAGS}

Since loop.c was partially patched already, I tried to manually fix Hunk #1, but nothing worked, so I guess it is no longer neccessary...

I managed to generate the binary file after patching Makefile... But it still refused to work.

2) Error assertion "0" failed: file "tgl/mtproto-utils.c", line 101, function: BN2ull

There were no compilation errors, but there was something wrong in tgl/mtproto-utils.c:

21:00:14@tg$ bin/telegram-cli -k tg-server.pub
Telegram-cli version 1.4.1, Copyright (C) 2013-2015 Vitaly Valtman
Telegram-cli comes with ABSOLUTELY NO WARRANTY; for details type `show_license'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show_license' for details.
Telegram-cli uses libtgl version 2.1.0
Telegram-cli includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit. (http://www.openssl.org/)
I: config dir=[/home/user/.telegram-cli]
[/home/user/.telegram-cli] created
[/home/user/.telegram-cli/downloads] created
> SIGNAL received
No libexec. Backtrace disabled
assertion "0" failed: file "tgl/mtproto-utils.c", line 101, function: BN2ull

The solution seems to be remove (or comment out) lines 101 and 115 in tgl/mtproto-utils.c:

[...]
101     //assert (0); // As long as nobody ever uses this code, assume it is broken.
[...]
115     //assert (0); // As long as nobody ever uses this code, assume it is broken.
[...]

After that, run make again, and execute it:

21:13:09@tg$ bin/telegram-cli -k tg-server.pub
Telegram-cli version 1.4.1, Copyright (C) 2013-2015 Vitaly Valtman
Telegram-cli comes with ABSOLUTELY NO WARRANTY; for details type `show_license'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show_license' for details.
Telegram-cli uses libtgl version 2.1.0
Telegram-cli includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit. (http://www.openssl.org/)
I: config dir=[/home/user/.telegram-cli]
>

I hope it helps!

\\psgonza

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