/* allocates and initializes an error response */
HttpReply *
errorBuildReply(ErrorState * err)
{
HttpReply *rep = httpReplyCreate();
const char *name = errorPageName(err->page_id);
/* no LMT for error pages; error pages expire immediately */
if (strchr(name, ':')) {
/* Redirection */
httpReplySetHeaders(rep, HTTP_MOVED_TEMPORARILY, NULL, "text/html", 0, -1, -1);
if (err->request) {
char *quoted_url = rfc1738_escape_part(urlCanonical(err->request));
httpHeaderPutStrf(&rep->header, HDR_LOCATION, name, quoted_url);
}
httpHeaderPutStrf(&rep->header, HDR_X_SQUID_ERROR, "%d %s", err->http_status, "Access Denied");
} else {
MemBuf content = errorBuildContent(err);
httpReplySetHeaders(rep, err->http_status, NULL, "text/html", content.size, -1, -1);
/*
* include some information for downstream caches. Implicit
* replaceable content. This isn't quite sufficient. xerrno is not
* necessarily meaningful to another system, so we really should
* expand it. Additionally, we should identify ourselves. Someone
* might want to know. Someone _will_ want to know OTOH, the first
* X-CACHE-MISS entry should tell us who.
*/
httpHeaderPutStrf(&rep->header, HDR_X_SQUID_ERROR, "%s %d",
name, err->xerrno);
httpBodySet(&rep->body, &content);
/* do not memBufClean() the content, it was absorbed by httpBody */
}
return rep;
}
/* Borrow part of code from libwww2 came with Mosaic distribution */
static void
gopherToHTML(GopherStateData * gopherState, char *inbuf, int len)
{
char *pos = inbuf;
char *lpos = NULL;
char *tline = NULL;
LOCAL_ARRAY(char, line, TEMP_BUF_SIZE);
LOCAL_ARRAY(char, tmpbuf, TEMP_BUF_SIZE);
String outbuf = StringNull;
char *name = NULL;
char *selector = NULL;
char *host = NULL;
char *port = NULL;
char *escaped_selector = NULL;
const char *icon_url = NULL;
char gtype;
StoreEntry *entry = NULL;
memset(tmpbuf, '\0', TEMP_BUF_SIZE);
memset(line, '\0', TEMP_BUF_SIZE);
entry = gopherState->entry;
if (gopherState->conversion == HTML_INDEX_PAGE) {
char *html_url = html_quote(storeUrl(entry));
gopherHTMLHeader(entry, "Gopher Index %s", html_url);
storeAppendPrintf(entry,
"<p>This is a searchable Gopher index. Use the search\n"
"function of your browser to enter search terms.\n"
"<ISINDEX>\n");
gopherHTMLFooter(entry);
/* now let start sending stuff to client */
storeBufferFlush(entry);
gopherState->HTML_header_added = 1;
return;
}
if (gopherState->conversion == HTML_CSO_PAGE) {
char *html_url = html_quote(storeUrl(entry));
gopherHTMLHeader(entry, "CSO Search of %s", html_url);
storeAppendPrintf(entry,
"<P>A CSO database usually contains a phonebook or\n"
"directory. Use the search function of your browser to enter\n"
"search terms.</P><ISINDEX>\n");
gopherHTMLFooter(entry);
/* now let start sending stuff to client */
storeBufferFlush(entry);
gopherState->HTML_header_added = 1;
return;
}
inbuf[len] = '\0';
if (!gopherState->HTML_header_added) {
if (gopherState->conversion == HTML_CSO_RESULT)
gopherHTMLHeader(entry, "CSO Search Result", NULL);
else
gopherHTMLHeader(entry, "Gopher Menu", NULL);
strCat(outbuf, "<PRE>");
gopherState->HTML_header_added = 1;
gopherState->HTML_pre = 1;
}
while ((pos != NULL) && (pos < inbuf + len)) {
if (gopherState->len != 0) {
/* there is something left from last tx. */
xstrncpy(line, gopherState->buf, gopherState->len + 1);
if (gopherState->len + len > TEMP_BUF_SIZE) {
debug(10, 1) ("GopherHTML: Buffer overflow. Lost some data on URL: %s\n",
storeUrl(entry));
len = TEMP_BUF_SIZE - gopherState->len;
}
lpos = (char *) memccpy(line + gopherState->len, inbuf, '\n', len);
if (lpos)
*lpos = '\0';
else {
/* there is no complete line in inbuf */
/* copy it to temp buffer */
if (gopherState->len + len > TEMP_BUF_SIZE) {
debug(10, 1) ("GopherHTML: Buffer overflow. Lost some data on URL: %s\n",
storeUrl(entry));
len = TEMP_BUF_SIZE - gopherState->len;
}
xmemcpy(gopherState->buf + gopherState->len, inbuf, len);
gopherState->len += len;
return;
}
/* skip one line */
pos = (char *) memchr(pos, '\n', len);
if (pos)
pos++;
/* we're done with the remain from last tx. */
gopherState->len = 0;
*(gopherState->buf) = '\0';
} else {
lpos = (char *) memccpy(line, pos, '\n', len - (pos - inbuf));
if (lpos)
*lpos = '\0';
else {
/* there is no complete line in inbuf */
/* copy it to temp buffer */
if ((len - (pos - inbuf)) > TEMP_BUF_SIZE) {
debug(10, 1) ("GopherHTML: Buffer overflow. Lost some data on URL: %s\n",
storeUrl(entry));
len = TEMP_BUF_SIZE;
}
if (len > (pos - inbuf)) {
xmemcpy(gopherState->buf, pos, len - (pos - inbuf));
gopherState->len = len - (pos - inbuf);
}
break;
}
/* skip one line */
pos = (char *) memchr(pos, '\n', len);
if (pos)
pos++;
}
/* at this point. We should have one line in buffer to process */
if (*line == '.') {
/* skip it */
memset(line, '\0', TEMP_BUF_SIZE);
continue;
}
switch (gopherState->conversion) {
case HTML_INDEX_RESULT:
case HTML_DIR:{
tline = line;
gtype = *tline++;
name = tline;
selector = strchr(tline, TAB);
if (selector) {
*selector++ = '\0';
host = strchr(selector, TAB);
if (host) {
*host++ = '\0';
port = strchr(host, TAB);
if (port) {
char *junk;
port[0] = ':';
junk = strchr(host, TAB);
if (junk)
*junk++ = 0; /* Chop port */
else {
junk = strchr(host, '\r');
if (junk)
*junk++ = 0; /* Chop port */
else {
junk = strchr(host, '\n');
if (junk)
*junk++ = 0; /* Chop port */
}
}
if ((port[1] == '0') && (!port[2]))
port[0] = 0; /* 0 means none */
}
/* escape a selector here */
escaped_selector = xstrdup(rfc1738_escape_part(selector));
switch (gtype) {
case GOPHER_DIRECTORY:
icon_url = mimeGetIconURL("internal-menu");
break;
case GOPHER_HTML:
case GOPHER_FILE:
icon_url = mimeGetIconURL("internal-text");
break;
case GOPHER_INDEX:
case GOPHER_CSO:
icon_url = mimeGetIconURL("internal-index");
break;
case GOPHER_IMAGE:
case GOPHER_GIF:
case GOPHER_PLUS_IMAGE:
icon_url = mimeGetIconURL("internal-image");
break;
case GOPHER_SOUND:
case GOPHER_PLUS_SOUND:
icon_url = mimeGetIconURL("internal-sound");
break;
case GOPHER_PLUS_MOVIE:
icon_url = mimeGetIconURL("internal-movie");
break;
case GOPHER_TELNET:
case GOPHER_3270:
icon_url = mimeGetIconURL("internal-telnet");
break;
case GOPHER_BIN:
case GOPHER_MACBINHEX:
case GOPHER_DOSBIN:
case GOPHER_UUENCODED:
icon_url = mimeGetIconURL("internal-binary");
break;
case GOPHER_INFO:
icon_url = NULL;
break;
default:
icon_url = mimeGetIconURL("internal-unknown");
break;
}
memset(tmpbuf, '\0', TEMP_BUF_SIZE);
if ((gtype == GOPHER_TELNET) || (gtype == GOPHER_3270)) {
if (strlen(escaped_selector) != 0)
snprintf(tmpbuf, TEMP_BUF_SIZE, "<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"telnet://%s@%s%s%s/\">%s</A>\n",
icon_url, escaped_selector, rfc1738_escape_part(host),
*port ? ":" : "", port, html_quote(name));
else
snprintf(tmpbuf, TEMP_BUF_SIZE, "<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"telnet://%s%s%s/\">%s</A>\n",
icon_url, rfc1738_escape_part(host), *port ? ":" : "",
port, html_quote(name));
} else if (gtype == GOPHER_INFO) {
snprintf(tmpbuf, TEMP_BUF_SIZE, "\t%s\n", html_quote(name));
} else {
if (strncmp(selector, "GET /", 5) == 0) {
/* WWW link */
snprintf(tmpbuf, TEMP_BUF_SIZE, "<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"http://%s/%s\">%s</A>\n",
icon_url, host, rfc1738_escape_unescaped(selector + 5), html_quote(name));
} else {
/* Standard link */
snprintf(tmpbuf, TEMP_BUF_SIZE, "<IMG border=\"0\" SRC=\"%s\"> <A HREF=\"gopher://%s/%c%s\">%s</A>\n",
icon_url, host, gtype, escaped_selector, html_quote(name));
}
}
safe_free(escaped_selector);
strCat(outbuf, tmpbuf);
} else {
memset(line, '\0', TEMP_BUF_SIZE);
continue;
}
} else {
memset(line, '\0', TEMP_BUF_SIZE);
continue;
}
break;
} /* HTML_DIR, HTML_INDEX_RESULT */
case HTML_CSO_RESULT:{
if (line[0] == '-') {
int code, recno;
char *s_code, *s_recno, *result;
s_code = strtok(line + 1, ":\n");
s_recno = strtok(NULL, ":\n");
result = strtok(NULL, "\n");
if (!result)
break;
code = atoi(s_code);
recno = atoi(s_recno);
if (code != 200)
break;
if (gopherState->cso_recno != recno) {
snprintf(tmpbuf, TEMP_BUF_SIZE, "</PRE><HR noshade size=\"1px\"><H2>Record# %d<br><i>%s</i></H2>\n<PRE>", recno, html_quote(result));
gopherState->cso_recno = recno;
} else {
snprintf(tmpbuf, TEMP_BUF_SIZE, "%s\n", html_quote(result));
}
strCat(outbuf, tmpbuf);
break;
} else {
int code;
char *s_code, *result;
s_code = strtok(line, ":");
result = strtok(NULL, "\n");
if (!result)
break;
code = atoi(s_code);
switch (code) {
case 200:{
/* OK */
/* Do nothing here */
break;
}
case 102: /* Number of matches */
case 501: /* No Match */
case 502: /* Too Many Matches */
{
/* Print the message the server returns */
snprintf(tmpbuf, TEMP_BUF_SIZE, "</PRE><HR noshade size=\"1px\"><H2>%s</H2>\n<PRE>", html_quote(result));
strCat(outbuf, tmpbuf);
break;
}
}
}
} /* HTML_CSO_RESULT */
default:
break; /* do nothing */
} /* switch */
} /* while loop */
if (strLen(outbuf) > 0) {
storeAppend(entry, strBuf(outbuf), strLen(outbuf));
/* now let start sending stuff to client */
storeBufferFlush(entry);
}
stringClean(&outbuf);
return;
}
char *
internalRedirectProcessURL(clientHttpRequest * req, rewritetoken * head)
{
char *dev = NULL;
size_t len = 0;
debug(85, 5) ("internalRedirectProcessURL: start\n");
for (; head != NULL; head = head->next) {
const char *str = NULL; /* string to append */
size_t str_len = 0;
int do_ulong = 0;
unsigned long ulong = 0;
const char *ulong_fmt = "%lu";
debug(85, 5) ("internalRedirectProcessURL: token=%s str=%s urlEncode=%s\n",
tokenNames[head->type], head->str, head->urlEncode ? "true" : "false");
switch (head->type) {
case RFT_STRING:
str = head->str;
str_len = head->str_len;
break;
case RFT_CLIENT_IPADDRESS:
str = inet_ntoa(req->conn->peer.sin_addr);
break;
case RFT_LOCAL_IPADDRESS:
str = inet_ntoa(req->conn->me.sin_addr);
break;
case RFT_LOCAL_PORT:
ulong = ntohs(req->conn->me.sin_port);
do_ulong = 1;
break;
case RFT_EPOCH_SECONDS:
ulong = current_time.tv_sec;
do_ulong = 1;
break;
case RFT_TIME_SUBSECONDS:
ulong = current_time.tv_usec / 1000;
do_ulong = 1;
ulong_fmt = "%03lu";
break;
case RFT_USERNAME:
if (req->request->auth_user_request)
str = authenticateUserUsername(req->request->auth_user_request->auth_user);
if (!str || !*str)
str = req->conn->rfc931;
#ifdef USE_SSL
if ((!str || !*str) && req->conn != NULL)
str = sslGetUserEmail(fd_table[req->conn->fd].ssl);
#endif
if (!str || !*str)
str = req->request->extacl_user;
break;
case RFT_USERLOGIN:
str = req->request->login;
break;
case RFT_USERIDENT:
str = req->conn->rfc931;
break;
case RFT_USERSSL:
#ifdef USE_SSL
if (req->conn != NULL)
str = sslGetUserEmail(fd_table[req->conn->fd].ssl);
#endif
break;
case RFT_EXTERNALACL_USER:
str = req->request->extacl_user;
break;
case RFT_METHOD:
str = req->request->method->string;
break;
case RFT_PROTOCOL:
str = ProtocolStr[req->request->protocol];
break;
case RFT_URL:
str = req->uri;
break;
case RFT_URLPATH:
str = req->request->urlpath.buf;
break;
case RFT_URLHOST:
str = req->request->host;
break;
case RFT_HDRHOST:
str = httpHeaderGetStr(&req->request->header, HDR_HOST);
break;
case RFT_EXTERNALACL_LOGSTR:
str = req->request->extacl_log.buf;
break;
default:
assert(0 && "Invalid rewrite token type");
break;
}
if (do_ulong) {
char tmpstr[12];
int nbytes = snprintf(tmpstr, 12, ulong_fmt, ulong);
assert(nbytes > 0);
dev = xreacat(dev, &len, tmpstr, nbytes);
} else {
if ((str == NULL) || (*str == '\0'))
str = "-";
if (str_len == 0)
str_len = strlen(str);
if (head->urlEncode) {
str = rfc1738_escape_part(str);
str_len = strlen(str);
}
dev = xreacat(dev, &len, str, str_len);
}
}
debug(85, 5) ("internalRedirectProcessURL: done: %s\n", dev);
return dev;
}
/* Borrow part of code from libwww2 came with Mosaic distribution */
static void
gopherToHTML(GopherStateData * gopherState, char *inbuf, int len)
{
char *pos = inbuf;
char *lpos = NULL;
char *tline = NULL;
LOCAL_ARRAY(char, line, TEMP_BUF_SIZE);
LOCAL_ARRAY(char, tmpbuf, TEMP_BUF_SIZE);
LOCAL_ARRAY(char, outbuf, TEMP_BUF_SIZE << 4);
char *name = NULL;
char *selector = NULL;
char *host = NULL;
char *port = NULL;
char *escaped_selector = NULL;
const char *icon_url = NULL;
char gtype;
StoreEntry *entry = NULL;
memset(outbuf, '\0', TEMP_BUF_SIZE << 4);
memset(tmpbuf, '\0', TEMP_BUF_SIZE);
memset(line, '\0', TEMP_BUF_SIZE);
entry = gopherState->entry;
if (gopherState->conversion == HTML_INDEX_PAGE) {
storeAppendPrintf(entry,
"<HTML><HEAD><TITLE>Gopher Index %s</TITLE></HEAD>\n"
"<BODY><H1>%s<BR>Gopher Search</H1>\n"
"<p>This is a searchable Gopher index. Use the search\n"
"function of your browser to enter search terms.\n"
"<ISINDEX></BODY></HTML>\n",
storeUrl(entry), storeUrl(entry));
/* now let start sending stuff to client */
storeBufferFlush(entry);
gopherState->data_in = 1;
return;
}
if (gopherState->conversion == HTML_CSO_PAGE) {
storeAppendPrintf(entry,
"<HTML><HEAD><TITLE>CSO Search of %s</TITLE></HEAD>\n"
"<BODY><H1>%s<BR>CSO Search</H1>\n"
"<P>A CSO database usually contains a phonebook or\n"
"directory. Use the search function of your browser to enter\n"
"search terms.</P><ISINDEX></BODY></HTML>\n",
storeUrl(entry), storeUrl(entry));
/* now let start sending stuff to client */
storeBufferFlush(entry);
gopherState->data_in = 1;
return;
}
inbuf[len] = '\0';
if (!gopherState->HTML_header_added) {
if (gopherState->conversion == HTML_CSO_RESULT)
strcat(outbuf, "<HTML><HEAD><TITLE>CSO Searchs Result</TITLE></HEAD>\n"
"<BODY><H1>CSO Searchs Result</H1>\n<PRE>\n");
else
strcat(outbuf, "<HTML><HEAD><TITLE>Gopher Menu</TITLE></HEAD>\n"
"<BODY><H1>Gopher Menu</H1>\n<PRE>\n");
gopherState->HTML_header_added = 1;
}
while ((pos != NULL) && (pos < inbuf + len)) {
if (gopherState->len != 0) {
/* there is something left from last tx. */
xstrncpy(line, gopherState->buf, gopherState->len);
lpos = (char *) memccpy(line + gopherState->len, inbuf, '\n', len);
if (lpos)
*lpos = '\0';
else {
/* there is no complete line in inbuf */
/* copy it to temp buffer */
if (gopherState->len + len > TEMP_BUF_SIZE) {
debug(10, 1) ("GopherHTML: Buffer overflow. Lost some data on URL: %s\n",
storeUrl(entry));
len = TEMP_BUF_SIZE - gopherState->len;
}
xmemcpy(gopherState->buf + gopherState->len, inbuf, len);
gopherState->len += len;
return;
}
/* skip one line */
pos = (char *) memchr(pos, '\n', len);
if (pos)
pos++;
/* we're done with the remain from last tx. */
gopherState->len = 0;
*(gopherState->buf) = '\0';
} else {
lpos = (char *) memccpy(line, pos, '\n', len - (pos - inbuf));
if (lpos)
*lpos = '\0';
else {
/* there is no complete line in inbuf */
/* copy it to temp buffer */
if ((len - (pos - inbuf)) > TEMP_BUF_SIZE) {
debug(10, 1) ("GopherHTML: Buffer overflow. Lost some data on URL: %s\n",
storeUrl(entry));
len = TEMP_BUF_SIZE;
}
if (len > (pos - inbuf)) {
xmemcpy(gopherState->buf, pos, len - (pos - inbuf));
gopherState->len = len - (pos - inbuf);
}
break;
}
/* skip one line */
pos = (char *) memchr(pos, '\n', len);
if (pos)
pos++;
}
/* at this point. We should have one line in buffer to process */
if (*line == '.') {
/* skip it */
memset(line, '\0', TEMP_BUF_SIZE);
continue;
}
switch (gopherState->conversion) {
case HTML_INDEX_RESULT:
case HTML_DIR:{
tline = line;
gtype = *tline++;
name = tline;
selector = strchr(tline, TAB);
if (selector) {
*selector++ = '\0';
host = strchr(selector, TAB);
if (host) {
*host++ = '\0';
port = strchr(host, TAB);
if (port) {
char *junk;
port[0] = ':';
junk = strchr(host, TAB);
if (junk)
*junk++ = 0; /* Chop port */
else {
junk = strchr(host, '\r');
if (junk)
*junk++ = 0; /* Chop port */
else {
junk = strchr(host, '\n');
if (junk)
*junk++ = 0; /* Chop port */
}
}
if ((port[1] == '0') && (!port[2]))
port[0] = 0; /* 0 means none */
}
/* escape a selector here */
escaped_selector = xstrdup(rfc1738_escape_part(selector));
switch (gtype) {
case GOPHER_DIRECTORY:
icon_url = mimeGetIconURL("internal-menu");
break;
case GOPHER_FILE:
icon_url = mimeGetIconURL("internal-text");
break;
case GOPHER_INDEX:
case GOPHER_CSO:
icon_url = mimeGetIconURL("internal-index");
break;
case GOPHER_IMAGE:
case GOPHER_GIF:
case GOPHER_PLUS_IMAGE:
icon_url = mimeGetIconURL("internal-image");
break;
case GOPHER_SOUND:
case GOPHER_PLUS_SOUND:
icon_url = mimeGetIconURL("internal-sound");
break;
case GOPHER_PLUS_MOVIE:
icon_url = mimeGetIconURL("internal-movie");
break;
case GOPHER_TELNET:
case GOPHER_3270:
icon_url = mimeGetIconURL("internal-telnet");
break;
case GOPHER_BIN:
case GOPHER_MACBINHEX:
case GOPHER_DOSBIN:
case GOPHER_UUENCODED:
icon_url = mimeGetIconURL("internal-binary");
break;
default:
icon_url = mimeGetIconURL("internal-unknown");
break;
}
memset(tmpbuf, '\0', TEMP_BUF_SIZE);
if ((gtype == GOPHER_TELNET) || (gtype == GOPHER_3270)) {
if (strlen(escaped_selector) != 0)
snprintf(tmpbuf, TEMP_BUF_SIZE, "<IMG BORDER=0 SRC=\"%s\"> <A HREF=\"telnet://%s@%s/\">%s</A>\n",
icon_url, escaped_selector, host, name);
else
snprintf(tmpbuf, TEMP_BUF_SIZE, "<IMG BORDER=0 SRC=\"%s\"> <A HREF=\"telnet://%s/\">%s</A>\n",
icon_url, host, name);
} else {
snprintf(tmpbuf, TEMP_BUF_SIZE, "<IMG BORDER=0 SRC=\"%s\"> <A HREF=\"gopher://%s/%c%s\">%s</A>\n",
icon_url, host, gtype, escaped_selector, name);
}
safe_free(escaped_selector);
strcat(outbuf, tmpbuf);
gopherState->data_in = 1;
} else {
memset(line, '\0', TEMP_BUF_SIZE);
continue;
}
} else {
memset(line, '\0', TEMP_BUF_SIZE);
continue;
}
break;
} /* HTML_DIR, HTML_INDEX_RESULT */
case HTML_CSO_RESULT:{
int t;
int code;
int recno;
LOCAL_ARRAY(char, result, MAX_CSO_RESULT);
tline = line;
if (tline[0] == '-') {
t = sscanf(tline, "-%d:%d:%[^\n]", &code, &recno, result);
if (t < 3)
break;
if (code != 200)
break;
if (gopherState->cso_recno != recno) {
snprintf(tmpbuf, TEMP_BUF_SIZE, "</PRE><HR><H2>Record# %d<br><i>%s</i></H2>\n<PRE>", recno, result);
gopherState->cso_recno = recno;
} else {
snprintf(tmpbuf, TEMP_BUF_SIZE, "%s\n", result);
}
strcat(outbuf, tmpbuf);
gopherState->data_in = 1;
break;
} else {
/* handle some error codes */
t = sscanf(tline, "%d:%[^\n]", &code, result);
if (t < 2)
break;
switch (code) {
case 200:{
/* OK */
/* Do nothing here */
break;
}
case 102: /* Number of matches */
case 501: /* No Match */
case 502: /* Too Many Matches */
{
/* Print the message the server returns */
snprintf(tmpbuf, TEMP_BUF_SIZE, "</PRE><HR><H2>%s</H2>\n<PRE>", result);
strcat(outbuf, tmpbuf);
gopherState->data_in = 1;
break;
}
}
}
} /* HTML_CSO_RESULT */
default:
break; /* do nothing */
} /* switch */
} /* while loop */
if ((int) strlen(outbuf) > 0) {
storeAppend(entry, outbuf, strlen(outbuf));
/* now let start sending stuff to client */
storeBufferFlush(entry);
}
return;
}
