-const char parsers_rcs[] = "$Id: parsers.c,v 1.310 2016/12/09 09:13:19 fabiankeil Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/parsers.c,v $
*
* Purpose : Declares functions to parse/crunch headers and pages.
*
- * Copyright : Written by and Copyright (C) 2001-2016 the
- * Privoxy team. http://www.privoxy.org/
+ * Copyright : Written by and Copyright (C) 2001-2020 the
+ * Privoxy team. https://www.privoxy.org/
*
* Based on the Internet Junkbuster originally written
* by and Copyright (C) 1997 Anonymous Coders and
#include "strptime.h"
#endif
-const char parsers_h_rcs[] = PARSERS_H_VERSION;
-
static char *get_header_line(struct iob *iob);
static jb_err scan_headers(struct client_state *csp);
static jb_err header_tagger(struct client_state *csp, char *header);
/*********************************************************************
*
- * Function : flush_socket
+ * Function : flush_iob
*
* Description : Write any pending "buffered" content.
*
* Parameters :
* 1 : fd = file descriptor of the socket to read
* 2 : iob = The I/O buffer to flush, usually csp->iob.
+ * 3 : delay = Number of milliseconds to delay the writes
*
* Returns : On success, the number of bytes written are returned (zero
* indicates nothing was written). On error, -1 is returned,
* file, the results are not portable.
*
*********************************************************************/
-long flush_socket(jb_socket fd, struct iob *iob)
+long flush_iob(jb_socket fd, struct iob *iob, unsigned int delay)
{
long len = iob->eod - iob->cur;
return(0);
}
- if (write_socket(fd, iob->cur, (size_t)len))
+ if (write_socket_delayed(fd, iob->cur, (size_t)len, delay))
{
return(-1);
}
if (bufsize >= csp->config->buffer_limit)
{
log_error(LOG_LEVEL_ERROR, "Buffer limit reached while decompressing iob");
+ freez(buf);
return JB_ERR_MEMORY;
}
}
+#ifdef FEATURE_HTTPS_INSPECTION
+/*********************************************************************
+ *
+ * Function : sed_https
+ *
+ * Description : add, delete or modify lines in the HTTPS client
+ * header streams. Wrapper around sed().
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ *
+ * Returns : JB_ERR_OK in case off success, or
+ * JB_ERR_MEMORY on some out-of-memory errors, or
+ * JB_ERR_PARSE in case of fatal parse errors.
+ *
+ *********************************************************************/
+jb_err sed_https(struct client_state *csp)
+{
+ jb_err err;
+ struct list headers;
+
+ /*
+ * Temporarly replace csp->headers with csp->https_headers
+ * to trick sed() into filtering the https headers.
+ */
+ headers.first = csp->headers->first;
+ headers.last = csp->headers->last;
+ csp->headers->first = csp->https_headers->first;
+ csp->headers->last = csp->https_headers->last;
+
+ /*
+ * Start with fresh tags. Already existing tags may
+ * be set again. This is necessary to overrule
+ * URL-based patterns.
+ */
+ destroy_list(csp->tags);
+
+ /*
+ * We want client header filters and taggers
+ * so temporarly remove the flag.
+ */
+ csp->flags &= ~CSP_FLAG_CLIENT_HEADER_PARSING_DONE;
+ err = sed(csp, FILTER_CLIENT_HEADERS);
+ csp->flags |= CSP_FLAG_CLIENT_HEADER_PARSING_DONE;
+
+ csp->headers->first = headers.first;
+ csp->headers->last = headers.last;
+
+ return err;
+}
+#endif /* def FEATURE_HTTPS_INSPECTION */
+
+
/*********************************************************************
*
* Function : update_server_headers
static jb_err get_content_length(const char *header_value, unsigned long long *length)
{
#ifdef _WIN32
- assert(sizeof(unsigned long long) > 4);
+#if SIZEOF_LONG_LONG < 8
+#error sizeof(unsigned long long) too small
+#endif
if (1 != sscanf(header_value, "%I64u", length))
#else
if (1 != sscanf(header_value, "%llu", length))
char *p;
char *host;
- assert(!http->ssl);
-
host = get_header_value(headers, "Host:");
if (NULL == host)
}
+#ifdef FEATURE_HTTPS_INSPECTION
+/*********************************************************************
+ *
+ * Function : get_destination_from_https_headers
+ *
+ * Description : Parse the previously encrypted "Host:" header to
+ * get the request's destination.
+ *
+ * Parameters :
+ * 1 : headers = List of headers (one of them hopefully being
+ * the "Host:" header)
+ * 2 : http = storage for the result (host, port and hostport).
+ *
+ * Returns : JB_ERR_MEMORY (or terminates) in case of memory problems,
+ * JB_ERR_PARSE if the host header couldn't be found,
+ * JB_ERR_OK otherwise.
+ *
+ *********************************************************************/
+jb_err get_destination_from_https_headers(const struct list *headers, struct http_request *http)
+{
+ char *q;
+ char *p;
+ char *host;
+
+ host = get_header_value(headers, "Host:");
+
+ if (NULL == host)
+ {
+ log_error(LOG_LEVEL_ERROR, "No \"Host:\" header found.");
+ return JB_ERR_PARSE;
+ }
+
+ p = strdup_or_die(host);
+ chomp(p);
+ q = strdup_or_die(p);
+
+ freez(http->hostport);
+ http->hostport = p;
+ freez(http->host);
+ http->host = q;
+ q = strchr(http->host, ':');
+ if (q != NULL)
+ {
+ /* Terminate hostname and evaluate port string */
+ *q++ = '\0';
+ http->port = atoi(q);
+ }
+ else
+ {
+ http->port = 443;
+ }
+
+ /* Rebuild request URL */
+ freez(http->url);
+ http->url = strdup_or_die(http->path);
+
+ log_error(LOG_LEVEL_HEADER,
+ "Destination extracted from \"Host\" header. New request URL: %s",
+ http->url);
+
+ /*
+ * Regenerate request line in "proxy format"
+ * to make rewrites more convenient.
+ */
+ assert(http->cmd != NULL);
+ freez(http->cmd);
+ http->cmd = strdup_or_die(http->gpc);
+ string_append(&http->cmd, " ");
+ string_append(&http->cmd, http->url);
+ string_append(&http->cmd, " ");
+ string_append(&http->cmd, http->ver);
+ if (http->cmd == NULL)
+ {
+ return JB_ERR_MEMORY;
+ }
+
+ return JB_ERR_OK;
+
+}
+#endif /* def FEATURE_HTTPS_INSPECTION */
+
+
/*********************************************************************
*
* Function : create_forged_referrer
static void create_content_length_header(unsigned long long content_length,
char *header, size_t buffer_length)
{
+#ifdef _WIN32
+#if SIZEOF_LONG_LONG < 8
+#error sizeof(unsigned long long) too small
+#endif
+ snprintf(header, buffer_length, "Content-Length: %I64u", content_length);
+#else
snprintf(header, buffer_length, "Content-Length: %llu", content_length);
+#endif
}
projects / privoxy.git / blobdiff