void get_line(int row, int startcol, int stopcol, BYTE *pixels)
{
if (startcol + g_logical_screen_x_offset >= g_screen_x_dots || row + g_logical_screen_y_offset >= g_screen_y_dots)
return;
lineread(row + g_logical_screen_y_offset, startcol + g_logical_screen_x_offset, stopcol + g_logical_screen_x_offset, pixels);
}
void
cgi_init( int *result ) {
int cl, i, in_multipart_headers, which_entry, length_gotten;
char * boundary;
/* Default, no errors, no name/value pairs ("entries"): */
cgi_errno = CGIERR_NONE;
cgi_num_entries = 0;
length_gotten = 0;
/* Check for REQUEST_METHOD (set by HTTP server): */
if (getenv("REQUEST_METHOD") == NULL)
{
/* None set? Assume the user is invoking the CGI from a shell prompt
(for debugging): */
cgi_request_method = CGIREQ_NONE;
}
else
{
/* Determine the exact request method, and grab the data (if any)
in the appropriate manner: */
if (strcmp(getenv("REQUEST_METHOD"), "POST") == 0)
{
/* Post method (data is sent to us via "stdin"): */
cgi_request_method = CGIREQ_POST;
if (getenv("CONTENT_TYPE") == NULL)
{
/* Content type is not set! */
cgi_errno = CGIERR_INCORRECT_TYPE;
cgi_content_type = CGITYPE_UNKNOWN;
CGI_RETURN(cgi_errno);
}
else if (strcmp(getenv("CONTENT_TYPE"),
"application/x-www-form-urlencoded") == 0)
{
cgi_content_type = CGITYPE_APPLICATION_X_WWW_FORM_URLENCODED;
/* How much data do we expect? */
if (getenv("CONTENT_LENGTH") == NULL ||
sscanf(getenv("CONTENT_LENGTH"), "%d", &cl) != 1)
{
cgi_errno = CGIERR_BAD_CONTENT_LENGTH;
CGI_RETURN(cgi_errno);
}
/* Create space for it: */
cgi_query = malloc(cl + 1);
/* 2.0.1 - Tadek Orlowski ([email protected]) ... "+1" */
if (cgi_query == NULL)
{
cgi_errno = CGIERR_OUT_OF_MEMORY;
CGI_RETURN(cgi_errno);
}
/* Read it in: */
fgets(cgi_query, cl + 1, stdin);
/* Verify that we got as much data as we expected: */
if (strlen(cgi_query) != cl)
cgi_errno = CGIERR_CONTENT_LENGTH_DISCREPANCY;
}
else if (strstr(getenv("CONTENT_TYPE"),
"multipart/form-data") == getenv("CONTENT_TYPE"))
{
cgi_content_type = CGITYPE_MULTIPART_FORM_DATA;
cgi_query = malloc(2050);
if (cgi_query == NULL)
{
cgi_errno = CGIERR_OUT_OF_MEMORY;
CGI_RETURN(cgi_errno);
}
/* Determine the boundary string: */
if (strstr(getenv("CONTENT_TYPE"),
"boundary=") == NULL)
{
cgi_errno = CGIERR_NO_BOUNDARY;
CGI_RETURN(cgi_errno);
}
boundary = strdup(strstr(getenv("CONTENT_TYPE"),
"boundary=") + 9);
debug("boundary", boundary);
/* Read in until there's no more: */
in_multipart_headers = 0;
which_entry = -1;
do
{
length_gotten = lineread(stdin, cgi_query, 2048);
debug("cgi_query", cgi_query);
if (length_gotten > 0)
{
if (strstr(cgi_query, boundary) == cgi_query + 2 &&
cgi_query[0] == '-' && cgi_query[1] == '-')
{
/* We got a boundary! */
in_multipart_headers = 1;
which_entry = -1;
}
else /* (Not a boundary) */
{
if (in_multipart_headers == 1)
{
/* We had just got a boundary, read headers: */
if (cgi_query[0] == '\r' || cgi_query[0] == '\n')
{
/* Blank line, end of headers: */
in_multipart_headers = 0;
}
else /* (Not a blank line) */
{
/* What kind of header is it? */
if (strstr(cgi_query,
"Content-Disposition: ") ==
cgi_query)
{
/* Content-disposition: */
/* For now, just look for "name=": */
if (strstr(cgi_query, "name=\"") != NULL)
{
/* Add a new entry: */
which_entry = cgi_num_entries;
cgi_num_entries++;
/* Make more room: */
cgi_entries =
realloc(cgi_entries,
sizeof(cgi_entry_type) *
cgi_num_entries);
if (cgi_entries == NULL)
{
cgi_errno = CGIERR_OUT_OF_MEMORY;
CGI_RETURN(cgi_errno);
}
/* Fill in the name slot: */
cgi_entries[which_entry].name =
strdup(strstr(cgi_query,
"name=\"") +
6);
/* Truncate after quote: */
if (strchr(cgi_entries[which_entry].
name, '\"') != NULL)
{
strcpy(strchr(cgi_entries
[which_entry].name,
'\"'), "\0");
}
/* Set default content-type: */
cgi_entries[which_entry].
content_type =
"application/octet-stream";
/* Set default content-length: */
cgi_entries[which_entry].
content_length = 0;
/* Set default value: */
cgi_entries[which_entry].val =
strdup("");
debug("entry.name",
cgi_entries[which_entry].name);
}
}
else if (strstr(cgi_query,
"Content-Type: ") ==
cgi_query)
{
/* Content-type: */
cgi_entries[which_entry].content_type =
strdup(strstr(cgi_query,
"Content-Type: ") +
14);
debug("entry.content_type",
cgi_entries[which_entry].
content_type);
}
}
}
else /* in_multipart_headers == 0 */
{
/* If we're recording into a particular
entry, copy the data: */
if (which_entry != -1)
{
/* Make more room: */
cgi_entries[which_entry].val =
realloc(cgi_entries[which_entry].val,
strlen(cgi_entries[which_entry].
val) + length_gotten + 1);
if (cgi_entries[which_entry].val == NULL)
{
cgi_errno = CGIERR_OUT_OF_MEMORY;
CGI_RETURN(cgi_errno);
}
/* Append the data: */
memcpy(cgi_entries[which_entry].val +
(cgi_entries[which_entry].
content_length),
cgi_query, length_gotten);
cgi_entries[which_entry].content_length =
(cgi_entries[which_entry].content_length +
length_gotten);
}
}
}
}
}
while (length_gotten > 0);
free(cgi_query);
}
else
{
/* Content type is unrecognized! */
cgi_errno = CGIERR_INCORRECT_TYPE;
cgi_content_type = CGITYPE_UNKNOWN;
CGI_RETURN(cgi_errno);
}
}
else if (strcmp(getenv("REQUEST_METHOD"), "GET") == 0)
{
/* For now, assume Content Type of
"application/x-www-form-urlencoded"
(Is this a bad assumption?) */
cgi_content_type = CGITYPE_APPLICATION_X_WWW_FORM_URLENCODED;
/* GET method (data sent via "QUERY_STRING" env. variable): */
cgi_request_method = CGIREQ_GET;
/* Get a pointer to the data: */
cgi_query = getenv("QUERY_STRING");
if (cgi_query == NULL)
{
/* Does the "QUERY_STRING" env. variable not exist!? */
cgi_errno = CGIERR_NULL_QUERY_STRING;
CGI_RETURN(cgi_errno);
}
else
{
/* Determine the content length by seeing how big the
string is: */
cl = strlen(cgi_query);
}
}
else
{
/* Something else? We can't handle it! */
cgi_request_method = CGIREQ_UNKNOWN;
cgi_errno = CGIERR_UNKNOWN_METHOD;
cgi_num_entries = 0;
CGI_RETURN(cgi_errno);
}
if (cgi_content_type != CGITYPE_MULTIPART_FORM_DATA)
{
/* How many entries (name/value pairs) do we need to
allocate space for? (They should be separated by "&"'s) */
cgi_num_entries = 0;
for (i = 0; i <= cl; i++)
if (cgi_query[i] == '&' || cgi_query[i] == '\0')
cgi_num_entries++;
/* Allocate the space for that many structures: */
cgi_entries = malloc(sizeof(cgi_entry_type) * cgi_num_entries);
if (cgi_entries == NULL)
{
cgi_errno = CGIERR_OUT_OF_MEMORY;
CGI_RETURN(cgi_errno);
}
/* Grab each name/value pair: */
cgi_num_entries = 0;
/* (Begin with the first half of the first pair): */
if (cgi_query[0] != '\0' && cgi_query[0] != '&')
{
cgi_entries[0].name = cgi_query;
cgi_entries[0].content_type = "text/html";
}
/* Go through the entire string of characters: */
for (i = 0; i <= cl; i++)
{
if (cgi_query[i] == '&')
{
/* "&" represents the end of a name/value pair: */
cgi_entries[cgi_num_entries].name = cgi_query + i + 1;
cgi_entries[cgi_num_entries].content_type = "text/html";
cgi_query[i] = '\0';
}
else if (cgi_query[i] == '=')
{
/* "=" is the end of the name half of a name/value pair: */
cgi_entries[cgi_num_entries].val = cgi_query + i + 1;
/* plustospace(cgi_entries[cgi_num_entries].val);
unescape_url(cgi_entries[cgi_num_entries].val); */
cgi_num_entries++;
cgi_query[i] = '\0';
}
}
for (i = 0; i < cgi_num_entries; i++)
{
plustospace(cgi_entries[i].val);
unescape_url(cgi_entries[i].val);
}
}
/* Fix any NULL strings to be empty strings */
/* 2.0.4 - MJ Pomraning ([email protected]) */
for (i = 0; i < cgi_num_entries; i++)
{
if (cgi_entries[i].name == NULL)
cgi_entries[i].name = "";
if (cgi_entries[i].val == NULL)
cgi_entries[i].val = "";
}
}
CGI_RETURN(CGIERR_NONE);
}
