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616 lines
20 KiB
Plaintext
616 lines
20 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/formating
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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(t)
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var/sqltext = SSdbcore.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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/proc/format_table_name(table as text)
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return global.sqlfdbktableprefix + table
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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(t,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(t,list/repl_chars = list("\n"="#","\t"="#"))
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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, index+1)
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return t
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/proc/sanitize_filename(t)
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return sanitize_simple(t, list("\n"="", "\t"="", "/"="", "\\"="", "?"="", "%"="", "*"="", ":"="", "|"="", "\""="", "<"="", ">"=""))
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//Runs byond's sanitization proc along-side sanitize_simple
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/proc/sanitize(t,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(t,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(t,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(text, max_length=512)
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if(length(text) > max_length)
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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)
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return //rejects the text if it contains these bad characters: <, >, \ or /
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if(127 to 255)
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return //rejects weird letters like <20>
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if(0 to 31)
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return //more weird stuff
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if(32)
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continue //whitespace
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else
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non_whitespace = 1
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if(non_whitespace)
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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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// no_trim is self explanatory but it prevents the input from being trimed if you intend to parse newlines or whitespace.
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/proc/stripped_input(mob/user, message = "", title = "", default = "", max_length=MAX_MESSAGE_LEN, no_trim=FALSE)
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var/name = input(user, message, title, default) as text|null
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if(no_trim)
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return copytext(html_encode(name), 1, max_length)
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else
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return trim(html_encode(name), max_length) //trim is "outside" because html_encode can expand single symbols into multiple symbols (such as turning < into <)
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// Used to get a properly sanitized multiline input, of max_length
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/proc/stripped_multiline_input(mob/user, message = "", title = "", default = "", max_length=MAX_MESSAGE_LEN, no_trim=FALSE)
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var/name = input(user, message, title, default) as message|null
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if(no_trim)
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return copytext(html_encode(name), 1, max_length)
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else
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return trim(html_encode(name), max_length)
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//Filters out undesirable characters from names
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/proc/reject_bad_name(t_in, allow_numbers=0, 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)
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t_out += ascii2text(ascii_char-32) //Force uppercase first character
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else
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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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// 0 .. 9
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if(48 to 57) //Numbers
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if(!last_char_group)
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continue //suppress at start of string
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if(!allow_numbers)
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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)
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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)
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continue //suppress at start of string
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if(!allow_numbers)
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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)
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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)
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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))
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return //(not case sensitive)
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return t_out
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//html_encode helper proc that returns the smallest non null of two numbers
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//or 0 if they're both null (needed because of findtext returning 0 when a value is not present)
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/proc/non_zero_min(a, b)
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if(!a)
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return b
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if(!b)
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return a
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return (a < b ? a : b)
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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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//Checks if any of a given list of needles is in the haystack
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/proc/text_in_list(haystack, list/needle_list, start=1, end=0)
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for(var/needle in needle_list)
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if(findtext(haystack, needle, start, end))
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return 1
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return 0
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//Like above, but case sensitive
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/proc/text_in_list_case(haystack, list/needle_list, start=1, end=0)
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for(var/needle in needle_list)
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if(findtextEx(haystack, needle, start, end))
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return 1
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return 0
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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, max_length)
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if(max_length)
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text = copytext(text, 1, max_length)
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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(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(text,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(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(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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GLOBAL_LIST_INIT(zero_character_only, list("0"))
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GLOBAL_LIST_INIT(hex_characters, list("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"))
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GLOBAL_LIST_INIT(alphabet, list("a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"))
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GLOBAL_LIST_INIT(binary, list("0","1"))
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/proc/random_string(length, list/characters)
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. = ""
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for(var/i=1, i<=length, i++)
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. += pick(characters)
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/proc/repeat_string(times, string="")
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. = ""
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for(var/i=1, i<=times, i++)
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. += string
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/proc/random_short_color()
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return random_string(3, GLOB.hex_characters)
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/proc/random_color()
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return random_string(6, GLOB.hex_characters)
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/proc/add_zero2(t, u)
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var/temp1
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while (length(t) < u)
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t = "0[t]"
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temp1 = t
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if (length(t) > u)
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temp1 = copytext(t,2,u+1)
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return temp1
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//merges non-null characters (3rd argument) from "from" into "into". Returns result
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//e.g. into = "Hello World"
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// from = "Seeya______"
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// returns"Seeya World"
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//The returned text is always the same length as into
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//This was coded to handle DNA gene-splicing.
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/proc/merge_text(into, from, null_char="_")
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. = ""
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if(!istext(into))
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into = ""
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if(!istext(from))
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from = ""
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var/null_ascii = istext(null_char) ? text2ascii(null_char,1) : null_char
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var/previous = 0
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var/start = 1
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var/end = length(into) + 1
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for(var/i=1, i<end, i++)
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var/ascii = text2ascii(from, i)
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if(ascii == null_ascii)
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if(previous != 1)
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. += copytext(from, start, i)
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start = i
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previous = 1
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else
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if(previous != 0)
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. += copytext(into, start, i)
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start = i
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previous = 0
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if(previous == 0)
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. += copytext(from, start, end)
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else
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. += copytext(into, start, end)
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//finds the first occurrence of one of the characters from needles argument inside haystack
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//it may appear this can be optimised, but it really can't. findtext() is so much faster than anything you can do in byondcode.
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//stupid byond :(
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/proc/findchar(haystack, needles, start=1, end=0)
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var/temp
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var/len = length(needles)
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for(var/i=1, i<=len, i++)
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temp = findtextEx(haystack, ascii2text(text2ascii(needles,i)), start, end) //Note: ascii2text(text2ascii) is faster than copytext()
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if(temp)
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end = temp
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return end
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/proc/parsepencode(t, mob/user=null, signfont=SIGNFONT)
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if(length(t) < 1) //No input means nothing needs to be parsed
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return
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t = replacetext(t, "\[center\]", "<center>")
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t = replacetext(t, "\[/center\]", "</center>")
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t = replacetext(t, "\[br\]", "<BR>")
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t = replacetext(t, "\[b\]", "<B>")
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t = replacetext(t, "\[/b\]", "</B>")
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t = replacetext(t, "\[i\]", "<I>")
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t = replacetext(t, "\[/i\]", "</I>")
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t = replacetext(t, "\[u\]", "<U>")
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t = replacetext(t, "\[/u\]", "</U>")
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t = replacetext(t, "\[large\]", "<font size=\"4\">")
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t = replacetext(t, "\[/large\]", "</font>")
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if(user)
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t = replacetext(t, "\[sign\]", "<font face=\"[signfont]\"><i>[user.real_name]</i></font>")
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else
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t = replacetext(t, "\[sign\]", "")
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t = replacetext(t, "\[field\]", "<span class=\"paper_field\"></span>")
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t = replacetext(t, "\[*\]", "<li>")
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t = replacetext(t, "\[hr\]", "<HR>")
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t = replacetext(t, "\[small\]", "<font size = \"1\">")
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t = replacetext(t, "\[/small\]", "</font>")
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t = replacetext(t, "\[list\]", "<ul>")
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t = replacetext(t, "\[/list\]", "</ul>")
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return t
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#define string2charlist(string) (splittext(string, regex("(.)")) - splittext(string, ""))
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/proc/rot13(text = "")
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var/list/textlist = string2charlist(text)
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var/list/result = list()
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for(var/c in textlist)
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var/ca = text2ascii(c)
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||
if(ca >= text2ascii("a") && ca <= text2ascii("m"))
|
||
ca += 13
|
||
else if(ca >= text2ascii("n") && ca <= text2ascii("z"))
|
||
ca -= 13
|
||
else if(ca >= text2ascii("A") && ca <= text2ascii("M"))
|
||
ca += 13
|
||
else if(ca >= text2ascii("N") && ca <= text2ascii("Z"))
|
||
ca -= 13
|
||
result += ascii2text(ca)
|
||
return jointext(result, "")
|
||
|
||
//Takes a list of values, sanitizes it down for readability and character count,
|
||
//then exports it as a json file at data/npc_saves/[filename].json.
|
||
//As far as SS13 is concerned this is write only data. You can't change something
|
||
//in the json file and have it be reflected in the in game item/mob it came from.
|
||
//(That's what things like savefiles are for) Note that this list is not shuffled.
|
||
/proc/twitterize(list/proposed, filename, cullshort = 1, storemax = 1000)
|
||
if(!islist(proposed) || !filename || !config.log_twitter)
|
||
return
|
||
|
||
//Regular expressions are, as usual, absolute magic
|
||
var/regex/is_website = new("http|www.|\[a-z0-9_-]+.(com|org|net|mil|edu)+", "i")
|
||
var/regex/is_email = new("\[a-z0-9_-]+@\[a-z0-9_-]+.\[a-z0-9_-]+", "i")
|
||
var/regex/alphanumeric = new("\[a-z0-9]+", "i")
|
||
var/regex/punctuation = new("\[.!?]+", "i")
|
||
var/regex/all_invalid_symbols = new("\[^ -~]+")
|
||
|
||
var/list/accepted = list()
|
||
for(var/string in proposed)
|
||
if(findtext(string,is_website) || findtext(string,is_email) || findtext(string,all_invalid_symbols) || !findtext(string,alphanumeric))
|
||
continue
|
||
var/buffer = ""
|
||
var/early_culling = TRUE
|
||
for(var/pos = 1, pos <= lentext(string), pos++)
|
||
var/let = copytext(string, pos, (pos + 1) % lentext(string))
|
||
if(early_culling && !findtext(let,alphanumeric))
|
||
continue
|
||
early_culling = FALSE
|
||
buffer += let
|
||
if(!findtext(buffer,alphanumeric))
|
||
continue
|
||
var/punctbuffer = ""
|
||
var/cutoff = lentext(buffer)
|
||
for(var/pos = lentext(buffer), pos >= 0, pos--)
|
||
var/let = copytext(buffer, pos, (pos + 1) % lentext(buffer))
|
||
if(findtext(let,alphanumeric))
|
||
break
|
||
if(findtext(let,punctuation))
|
||
punctbuffer = let + punctbuffer //Note this isn't the same thing as using +=
|
||
cutoff = pos
|
||
if(punctbuffer) //We clip down excessive punctuation to get the letter count lower and reduce repeats. It's not perfect but it helps.
|
||
var/exclaim = FALSE
|
||
var/question = FALSE
|
||
var/periods = 0
|
||
for(var/pos = lentext(punctbuffer), pos >= 0, pos--)
|
||
var/punct = copytext(punctbuffer, pos, (pos + 1) % lentext(punctbuffer))
|
||
if(!exclaim && findtext(punct,"!"))
|
||
exclaim = TRUE
|
||
if(!question && findtext(punct,"?"))
|
||
question = TRUE
|
||
if(!exclaim && !question && findtext(punct,"."))
|
||
periods += 1
|
||
if(exclaim)
|
||
if(question)
|
||
punctbuffer = "?!"
|
||
else
|
||
punctbuffer = "!"
|
||
else if(question)
|
||
punctbuffer = "?"
|
||
else if(periods)
|
||
if(periods > 1)
|
||
punctbuffer = "..."
|
||
else
|
||
punctbuffer = "" //Grammer nazis be damned
|
||
buffer = copytext(buffer, 1, cutoff) + punctbuffer
|
||
if(!findtext(buffer,alphanumeric))
|
||
continue
|
||
if(!buffer || lentext(buffer) > 140 || lentext(buffer) <= cullshort || buffer in accepted)
|
||
continue
|
||
|
||
accepted += buffer
|
||
|
||
var/log = file("data/npc_saves/[filename].json") //If this line ever shows up as changed in a PR be very careful you aren't being memed on
|
||
var/list/oldjson = list()
|
||
var/list/oldentries = list()
|
||
if(fexists(log))
|
||
oldjson = json_decode(file2text(log))
|
||
oldentries = oldjson["data"]
|
||
if(!isemptylist(oldentries))
|
||
for(var/string in accepted)
|
||
for(var/old in oldentries)
|
||
if(string == old)
|
||
oldentries.Remove(old) //Line's position in line is "refreshed" until it falls off the in game radar
|
||
break
|
||
|
||
var/list/finalized = list()
|
||
finalized = accepted.Copy() + oldentries.Copy() //we keep old and unreferenced phrases near the bottom for culling
|
||
listclearnulls(finalized)
|
||
if(!isemptylist(finalized) && length(finalized) > storemax)
|
||
finalized.Cut(storemax + 1)
|
||
fdel(log)
|
||
|
||
var/list/tosend = list()
|
||
tosend["data"] = finalized
|
||
WRITE_FILE(log, json_encode(tosend))
|
||
|
||
//Used for applying byonds text macros to strings that are loaded at runtime
|
||
/proc/apply_text_macros(string)
|
||
var/next_backslash = findtext(string, "\\")
|
||
if(!next_backslash)
|
||
return string
|
||
|
||
var/leng = length(string)
|
||
|
||
var/next_space = findtext(string, " ", next_backslash + 1)
|
||
if(!next_space)
|
||
next_space = leng - next_backslash
|
||
|
||
if(!next_space) //trailing bs
|
||
return string
|
||
|
||
var/base = next_backslash == 1 ? "" : copytext(string, 1, next_backslash)
|
||
var/macro = lowertext(copytext(string, next_backslash + 1, next_space))
|
||
var/rest = next_backslash > leng ? "" : copytext(string, next_space + 1)
|
||
|
||
//See http://www.byond.com/docs/ref/info.html#/DM/text/macros
|
||
switch(macro)
|
||
//prefixes/agnostic
|
||
if("the")
|
||
rest = text("\the []", rest)
|
||
if("a")
|
||
rest = text("\a []", rest)
|
||
if("an")
|
||
rest = text("\an []", rest)
|
||
if("proper")
|
||
rest = text("\proper []", rest)
|
||
if("improper")
|
||
rest = text("\improper []", rest)
|
||
if("roman")
|
||
rest = text("\roman []", rest)
|
||
//postfixes
|
||
if("th")
|
||
base = text("[]\th", rest)
|
||
if("s")
|
||
base = text("[]\s", rest)
|
||
if("he")
|
||
base = text("[]\he", rest)
|
||
if("she")
|
||
base = text("[]\she", rest)
|
||
if("his")
|
||
base = text("[]\his", rest)
|
||
if("himself")
|
||
base = text("[]\himself", rest)
|
||
if("herself")
|
||
base = text("[]\herself", rest)
|
||
if("hers")
|
||
base = text("[]\hers", rest)
|
||
|
||
. = base
|
||
if(rest)
|
||
. += .(rest)
|