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https://github.com/CHOMPStation2/CHOMPStation2.git
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7512246c8b
They are toggleable in the player preferences verb-tab, default is on. They are not necessarily limited to anything, it is just an image in text. The main use is to mark some distinct channels (like OOC, LOOC, admin and mod cheat, dead chat, PMs, ...). To make them more visible, easily distinguishable and perhaps more visually appealing.
349 lines
12 KiB
Plaintext
349 lines
12 KiB
Plaintext
/*
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* Holds procs designed to help with filtering text
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* Contains groups:
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* SQL sanitization
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* Text sanitization
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* Text searches
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* Text modification
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* Misc
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*/
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/*
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* SQL sanitization
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*/
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// Run all strings to be used in an SQL query through this proc first to properly escape out injection attempts.
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/proc/sanitizeSQL(var/t as text)
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var/sqltext = dbcon.Quote(t);
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return copytext(sqltext, 2, lentext(sqltext));//Quote() adds quotes around input, we already do that
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/*
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* Text sanitization
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*/
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//Simply removes < and > and limits the length of the message
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/proc/strip_html_simple(var/t,var/limit=MAX_MESSAGE_LEN)
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var/list/strip_chars = list("<",">")
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t = copytext(t,1,limit)
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for(var/char in strip_chars)
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var/index = findtext(t, char)
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while(index)
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t = copytext(t, 1, index) + copytext(t, index+1)
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index = findtext(t, char)
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return t
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//Removes a few problematic characters
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/proc/sanitize_simple(var/t,var/list/repl_chars = list("\n"="#","\t"="#","<22>"="<22>"))
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for(var/char in repl_chars)
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var/index = findtext(t, char)
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while(index)
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t = copytext(t, 1, index) + repl_chars[char] + copytext(t, index+1)
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index = findtext(t, char)
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return t
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//Runs byond's sanitization proc along-side sanitize_simple
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/proc/sanitize(var/t,var/list/repl_chars = null)
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return html_encode(sanitize_simple(t,repl_chars))
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//Runs sanitize and strip_html_simple
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//I believe strip_html_simple() is required to run first to prevent '<' from displaying as '<' after sanitize() calls byond's html_encode()
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/proc/strip_html(var/t,var/limit=MAX_MESSAGE_LEN)
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return copytext((sanitize(strip_html_simple(t))),1,limit)
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//Runs byond's sanitization proc along-side strip_html_simple
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//I believe strip_html_simple() is required to run first to prevent '<' from displaying as '<' that html_encode() would cause
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/proc/adminscrub(var/t,var/limit=MAX_MESSAGE_LEN)
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return copytext((html_encode(strip_html_simple(t))),1,limit)
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//Returns null if there is any bad text in the string
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/proc/reject_bad_text(var/text, var/max_length=512)
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if(length(text) > max_length) return //message too long
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var/non_whitespace = 0
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for(var/i=1, i<=length(text), i++)
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switch(text2ascii(text,i))
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if(62,60,92,47) return //rejects the text if it contains these bad characters: <, >, \ or /
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if(127 to 255) return //rejects weird letters like <20>
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if(0 to 31) return //more weird stuff
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if(32) continue //whitespace
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else non_whitespace = 1
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if(non_whitespace) return text //only accepts the text if it has some non-spaces
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// Used to get a properly sanitized input, of max_length
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/proc/stripped_input(var/mob/user, var/message = "", var/title = "", var/default = "", var/max_length=MAX_MESSAGE_LEN)
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var/name = input(user, message, title, default)
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return strip_html_properly(name, max_length)
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// Used to get a trimmed, properly sanitized input, of max_length
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/proc/trim_strip_input(var/mob/user, var/message = "", var/title = "", var/default = "", var/max_length=MAX_MESSAGE_LEN)
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return trim(stripped_input(user, message, title, default, max_length))
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//Filters out undesirable characters from names
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/proc/reject_bad_name(var/t_in, var/allow_numbers=0, var/max_length=MAX_NAME_LEN)
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if(!t_in || length(t_in) > max_length)
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return //Rejects the input if it is null or if it is longer then the max length allowed
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var/number_of_alphanumeric = 0
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var/last_char_group = 0
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var/t_out = ""
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for(var/i=1, i<=length(t_in), i++)
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var/ascii_char = text2ascii(t_in,i)
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switch(ascii_char)
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// A .. Z
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if(65 to 90) //Uppercase Letters
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t_out += ascii2text(ascii_char)
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number_of_alphanumeric++
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last_char_group = 4
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// a .. z
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if(97 to 122) //Lowercase Letters
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if(last_char_group<2) t_out += ascii2text(ascii_char-32) //Force uppercase first character
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else t_out += ascii2text(ascii_char)
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number_of_alphanumeric++
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last_char_group = 4
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// 0 .. 9
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if(48 to 57) //Numbers
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if(!last_char_group) continue //suppress at start of string
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if(!allow_numbers) continue
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t_out += ascii2text(ascii_char)
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number_of_alphanumeric++
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last_char_group = 3
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// ' - .
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if(39,45,46) //Common name punctuation
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if(!last_char_group) continue
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t_out += ascii2text(ascii_char)
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last_char_group = 2
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// ~ | @ : # $ % & * +
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if(126,124,64,58,35,36,37,38,42,43) //Other symbols that we'll allow (mainly for AI)
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if(!last_char_group) continue //suppress at start of string
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if(!allow_numbers) continue
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t_out += ascii2text(ascii_char)
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last_char_group = 2
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//Space
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if(32)
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if(last_char_group <= 1) continue //suppress double-spaces and spaces at start of string
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t_out += ascii2text(ascii_char)
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last_char_group = 1
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else
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return
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if(number_of_alphanumeric < 2) return //protects against tiny names like "A" and also names like "' ' ' ' ' ' ' '"
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if(last_char_group == 1)
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t_out = copytext(t_out,1,length(t_out)) //removes the last character (in this case a space)
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for(var/bad_name in list("space","floor","wall","r-wall","monkey","unknown","inactive ai")) //prevents these common metagamey names
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if(cmptext(t_out,bad_name)) return //(not case sensitive)
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return t_out
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//checks text for html tags
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//if tag is not in whitelist (var/list/paper_tag_whitelist in global.dm)
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//relpaces < with <
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proc/checkhtml(var/t)
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t = sanitize_simple(t, list("&#"="."))
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var/p = findtext(t,"<",1)
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while (p) //going through all the tags
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var/start = p++
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var/tag = copytext(t,p, p+1)
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if (tag != "/")
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while (reject_bad_text(copytext(t, p, p+1), 1))
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tag = copytext(t,start, p)
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p++
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tag = copytext(t,start+1, p)
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if (!(tag in paper_tag_whitelist)) //if it's unkown tag, disarming it
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t = copytext(t,1,start-1) + "<" + copytext(t,start+1)
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p = findtext(t,"<",p)
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return t
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/*
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* Text searches
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*/
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//Checks the beginning of a string for a specified sub-string
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//Returns the position of the substring or 0 if it was not found
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/proc/dd_hasprefix(text, prefix)
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var/start = 1
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var/end = length(prefix) + 1
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return findtext(text, prefix, start, end)
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//Checks the beginning of a string for a specified sub-string. This proc is case sensitive
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//Returns the position of the substring or 0 if it was not found
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/proc/dd_hasprefix_case(text, prefix)
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var/start = 1
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var/end = length(prefix) + 1
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return findtextEx(text, prefix, start, end)
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//Checks the end of a string for a specified substring.
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//Returns the position of the substring or 0 if it was not found
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/proc/dd_hassuffix(text, suffix)
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var/start = length(text) - length(suffix)
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if(start)
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return findtext(text, suffix, start, null)
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return
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//Checks the end of a string for a specified substring. This proc is case sensitive
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//Returns the position of the substring or 0 if it was not found
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/proc/dd_hassuffix_case(text, suffix)
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var/start = length(text) - length(suffix)
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if(start)
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return findtextEx(text, suffix, start, null)
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/*
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* Text modification
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*/
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/proc/replacetext(text, find, replacement)
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return list2text(text2list(text, find), replacement)
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/proc/replacetextEx(text, find, replacement)
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return list2text(text2listEx(text, find), replacement)
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//Adds 'u' number of zeros ahead of the text 't'
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/proc/add_zero(t, u)
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while (length(t) < u)
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t = "0[t]"
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return t
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//Adds 'u' number of spaces ahead of the text 't'
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/proc/add_lspace(t, u)
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while(length(t) < u)
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t = " [t]"
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return t
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//Adds 'u' number of spaces behind the text 't'
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/proc/add_tspace(t, u)
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while(length(t) < u)
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t = "[t] "
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return t
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//Returns a string with reserved characters and spaces before the first letter removed
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/proc/trim_left(text)
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for (var/i = 1 to length(text))
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if (text2ascii(text, i) > 32)
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return copytext(text, i)
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return ""
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//Returns a string with reserved characters and spaces after the last letter removed
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/proc/trim_right(text)
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for (var/i = length(text), i > 0, i--)
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if (text2ascii(text, i) > 32)
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return copytext(text, 1, i + 1)
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return ""
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//Returns a string with reserved characters and spaces before the first word and after the last word removed.
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/proc/trim(text)
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return trim_left(trim_right(text))
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//Returns a string with the first element of the string capitalized.
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/proc/capitalize(var/t as text)
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return uppertext(copytext(t, 1, 2)) + copytext(t, 2)
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//Centers text by adding spaces to either side of the string.
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/proc/dd_centertext(message, length)
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var/new_message = message
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var/size = length(message)
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var/delta = length - size
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if(size == length)
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return new_message
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if(size > length)
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return copytext(new_message, 1, length + 1)
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if(delta == 1)
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return new_message + " "
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if(delta % 2)
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new_message = " " + new_message
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delta--
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var/spaces = add_lspace("",delta/2-1)
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return spaces + new_message + spaces
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//Limits the length of the text. Note: MAX_MESSAGE_LEN and MAX_NAME_LEN are widely used for this purpose
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/proc/dd_limittext(message, length)
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var/size = length(message)
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if(size <= length)
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return message
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return copytext(message, 1, length + 1)
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/proc/stringmerge(var/text,var/compare,replace = "*")
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//This proc fills in all spaces with the "replace" var (* by default) with whatever
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//is in the other string at the same spot (assuming it is not a replace char).
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//This is used for fingerprints
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var/newtext = text
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if(lentext(text) != lentext(compare))
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return 0
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for(var/i = 1, i < lentext(text), i++)
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var/a = copytext(text,i,i+1)
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var/b = copytext(compare,i,i+1)
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//if it isn't both the same letter, or if they are both the replacement character
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//(no way to know what it was supposed to be)
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if(a != b)
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if(a == replace) //if A is the replacement char
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newtext = copytext(newtext,1,i) + b + copytext(newtext, i+1)
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else if(b == replace) //if B is the replacement char
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newtext = copytext(newtext,1,i) + a + copytext(newtext, i+1)
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else //The lists disagree, Uh-oh!
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return 0
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return newtext
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/proc/stringpercent(var/text,character = "*")
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//This proc returns the number of chars of the string that is the character
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//This is used for detective work to determine fingerprint completion.
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if(!text || !character)
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return 0
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var/count = 0
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for(var/i = 1, i <= lentext(text), i++)
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var/a = copytext(text,i,i+1)
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if(a == character)
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count++
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return count
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/proc/reverse_text(var/text = "")
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var/new_text = ""
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for(var/i = length(text); i > 0; i--)
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new_text += copytext(text, i, i+1)
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return new_text
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//Used in preferences' SetFlavorText and human's set_flavor verb
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//Previews a string of len or less length
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proc/TextPreview(var/string,var/len=40)
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if(lentext(string) <= len)
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if(!lentext(string))
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return "\[...\]"
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else
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return string
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else
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return "[copytext(string, 1, 37)]..."
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//This proc strips html properly, but it's not lazy like the other procs.
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//This means that it doesn't just remove < and > and call it a day.
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//Also limit the size of the input, if specified.
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/proc/strip_html_properly(var/input, var/max_length = MAX_MESSAGE_LEN)
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var/opentag = 1 //These store the position of < and > respectively.
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var/closetag = 1
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while(1)
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opentag = findtext(input, "<")
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closetag = findtext(input, ">")
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if(!closetag || !opentag)
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break
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input = copytext(input, 1, opentag) + copytext(input, (closetag + 1))
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if(max_length)
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input = copytext(input,1,max_length)
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return input
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/proc/trim_strip_html_properly(var/input, var/max_length = MAX_MESSAGE_LEN)
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return trim(strip_html_properly(input, max_length))
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//For generating neat chat tag-images
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//The icon var could be local in the proc, but it's a waste of resources
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// to always create it and then throw it out.
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/var/icon/text_tag_icons = new('./icons/chattags.dmi')
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/proc/create_text_tag(var/tagname, var/tagdesc = tagname, var/client/C = null)
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if(C && (C.prefs.toggles & CHAT_NOICONS))
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return tagdesc
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return "<IMG src='\ref[text_tag_icons.icon]' class='text_tag' iconstate='[tagname]'" + (tagdesc ? " alt='[tagdesc]'" : "") + ">"
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