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implement Script;
include "sys.m";
sys: Sys;
include "draw.m";
include "string.m";
str: String;
include "lock.m";
include "modem.m";
modem: Modem;
include "script.m";
delim: con "-"; # expect-send delimiter
BUFSIZE: con (1024 * 32);
execute( modmod: Modem, m: ref Modem->Device, scriptinfo: ref ScriptInfo )
{
sys= load Sys Sys->PATH;
str= load String String->PATH;
if (str == nil) {
raise "fail: couldn't load string module";
return;
}
modem = modmod;
if (scriptinfo.path != nil) {
sys->print("Executing Script %s\n",scriptinfo.path);
# load the script
scriptinfo.content = scriptload(scriptinfo.path);
} else {
sys->print("Executing Inline Script\n");
}
# Check for timeout variable
if (scriptinfo.timeout == 0)
scriptinfo.timeout = 20;
tend := sys->millisec() + 1000*scriptinfo.timeout;
conv := scriptinfo.content;
while (conv != nil) {
e, s: string = nil;
p := hd conv;
conv = tl conv;
if (len p == 0)
continue;
sys->print("script: %s\n",p);
if (p[0] == '-') { # just send
if (len p == 1)
continue;
s = p[1:];
} else {
(n, esl) := sys->tokenize(p, delim);
if (n > 0) {
e = hd esl;
esl = tl esl;
if (n > 1)
s = hd esl;
}
}
if (e != nil) {
if (match(m, special(e,scriptinfo), tend-sys->millisec()) == 0) {
sys->print("script: match failed\n");
raise "fail: Script Failed";
return;
}
}
if (s != nil)
modem->send(m, special(s, scriptinfo));
}
sys->print("script: done!\n");
}
match(m: ref Modem->Device, s: string, timo: int): int
{
for(;;) {
c := modem->getc(m, timo);
if (c == '\r')
c = '\n';
sys->print("%c",c);
if (c == 0)
return 0;
head:
while(c == s[0]) {
i := 1;
while(i < len s) {
c = modem->getc(m, timo);
if (c == '\r')
c = '\n';
sys->print("%c",c);
if(c == 0)
return 0;
if(c != s[i])
continue head;
i++;
}
return 1;
}
if(c == '~')
return 1; # assume PPP for now
}
}
#
# Expand special script sequences
#
special(s: string, scriptinfo: ref ScriptInfo ): string
{
if (s == "$username") # special variable
s = scriptinfo.username;
else if (s == "$password")
s = scriptinfo.password;
return deparse(s);
}
deparse(s : string) : string
{
r: string = "";
for(i:=0; i < len s; i++) {
c := s[i];
if (c == '\\' && i+1 < len s) {
c = s[++i];
case c {
't' => c = '\t';
'n' => c = '\n';
'r' => c = '\r';
'b' => c = '\b';
'a' => c = '\a';
'v' => c = '\v';
'0' => c = '\0';
'$' => c = '$';
'u' =>
if (i+4 < len s) {
i++;
(c, nil) = str->toint(s[i:i+4], 16);
i+=3;
}
}
}
r[len r] = c;
}
return r;
}
scriptload( path: string) :list of string
{
dfd := sys->open(path, Sys->OREAD);
if (dfd == nil) {
raise "fail: Script file ("+path+") not found";
return nil;
}
scriptbuf := array[BUFSIZE] of byte;
scriptlen := sys->read(dfd, scriptbuf, len scriptbuf);
if(scriptlen < 0)
raise "fail: can't read script: "+sys->sprint("%r");
(nil, scriptlist) := sys->tokenize(string scriptbuf[0:scriptlen], "\n");
return scriptlist;
}
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