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mIRC DLL question #210820 26/03/09 07:32 PM
Joined: Mar 2009 Posts: 1 9 95102 OP Mostly harmless
OP 95102 Mostly harmless 9 Joined: Mar 2009 Posts: 1	Functions that mIRC execute in DLLs have a specific list of arguments, the `char* data` argument can be filled with data to be returned from the $dll() call in mIRC, how many bytes can it hold? Also, would it be safe for me to free() the memory `data` points to and point it to some memory I've allocated myself?

Re: mIRC DLL question 95102 #210821 26/03/09 08:06 PM
Joined: Oct 2003 Posts: 3,918 Montreal, QC, Canada A argv0 Hoopy frood
argv0 Hoopy frood A Joined: Oct 2003 Posts: 3,918 Montreal, QC, Canada	For the last year, mIRC now holds roughly(!) 4000 bytes of data in strings/variables/results-- this limit is not universal across mIRC, though I believe this is now the limit for DLLs. If not, ~900 should work. Quote: would it be safe for me to free() the memory `data` points to and point it to some memory I've allocated myself? No, it would be extremely unsafe for you to do that. The char *data is pre-allocated and managed by mIRC. It is used after the dll call to read results, specifically: Code: strcpy(data, "/echo -a hello world"); return 2; If you free()'d data, mIRC would crash, either by attempting to read invalid memory or by free'ing already-deallocated memory. - argv[0] on EFnet #mIRC - "Life is a pointer to an integer without a cast"

Re: mIRC DLL question argv0 #210951 29/03/09 06:49 PM
Joined: Feb 2003 Posts: 307 Portugal T tontito Fjord artisan
tontito Fjord artisan T Joined: Feb 2003 Posts: 307 Portugal	I can confirm that at least 3800 bytes of data can be used with dlls. More than that, may be an issue for some cases.

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