X-Git-Url: http://www.privoxy.org/gitweb/?a=blobdiff_plain;f=parsers.c;h=ec7e9517e13613f52f9105b39a0cd70ee14a34d5;hb=be8200b6670bf4238f0315acf906772b34b4551e;hp=14e92ac55b18eba34d2dd076b695e13c3fdbcc10;hpb=014e796377eafac5f1875e61282d48cb337dbdce;p=privoxy.git diff --git a/parsers.c b/parsers.c index 14e92ac5..ec7e9517 100644 --- a/parsers.c +++ b/parsers.c @@ -1,4 +1,4 @@ -const char parsers_rcs[] = "$Id: parsers.c,v 1.13 2001/05/31 21:30:33 jongfoster Exp $"; +const char parsers_rcs[] = "$Id: parsers.c,v 1.21 2001/07/31 14:46:00 oes Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/parsers.c,v $ @@ -41,6 +41,42 @@ const char parsers_rcs[] = "$Id: parsers.c,v 1.13 2001/05/31 21:30:33 jongfoster * * Revisions : * $Log: parsers.c,v $ + * Revision 1.21 2001/07/31 14:46:00 oes + * - Persistant connections now suppressed + * - sed() no longer appends empty header to csp->headers + * + * Revision 1.20 2001/07/30 22:08:36 jongfoster + * Tidying up #defines: + * - All feature #defines are now of the form FEATURE_xxx + * - Permanently turned off WIN_GUI_EDIT + * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS + * + * Revision 1.19 2001/07/25 17:21:54 oes + * client_uagent now saves copy of User-Agent: header value + * + * Revision 1.18 2001/07/13 14:02:46 oes + * - Included fix to repair broken HTTP requests that + * don't contain a path, not even '/'. + * - Removed all #ifdef PCRS + * - content_type now always inspected and classified as + * text, gif or other. + * - formatting / comments + * + * Revision 1.17 2001/06/29 21:45:41 oes + * Indentation, CRLF->LF, Tab-> Space + * + * Revision 1.16 2001/06/29 13:32:42 oes + * - Fixed a comment + * - Adapted free_http_request + * - Removed logentry from cancelled commit + * + * Revision 1.15 2001/06/03 19:12:38 oes + * deleted const struct interceptors + * + * Revision 1.14 2001/06/01 18:49:17 jongfoster + * Replaced "list_share" with "list" - the tiny memory gain was not + * worth the extra complexity. + * * Revision 1.13 2001/05/31 21:30:33 jongfoster * Removed list code - it's now in list.[ch] * Renamed "permission" to "action", and changed many features @@ -51,7 +87,7 @@ const char parsers_rcs[] = "$Id: parsers.c,v 1.13 2001/05/31 21:30:33 jongfoster * CRLF -> LF * * Revision 1.11 2001/05/29 20:11:19 joergs - * '/* inside comment' warning removed. + * '/ * inside comment' warning removed. * * Revision 1.10 2001/05/29 09:50:24 jongfoster * Unified blocklist/imagelist/permissionslist. @@ -199,6 +235,7 @@ const char parsers_rcs[] = "$Id: parsers.c,v 1.13 2001/05/31 21:30:33 jongfoster #include "errlog.h" #include "jbsockets.h" #include "miscutil.h" +#include "cgi.h" const char parsers_h_rcs[] = PARSERS_H_VERSION; @@ -223,39 +260,28 @@ const struct parsers client_patterns[] = { { "from:", 5, client_from }, { "cookie:", 7, client_send_cookie }, { "x-forwarded-for:", 16, client_x_forwarded }, - { "proxy-connection:", 17, crumble }, -#ifdef DENY_GZIP +#ifdef FEATURE_DENY_GZIP { "Accept-Encoding: gzip", 21, crumble }, -#endif /* def DENY_GZIP */ -#if defined(DETECT_MSIE_IMAGES) +#endif /* def FEATURE_DENY_GZIP */ +#if defined(FEATURE_IMAGE_DETECT_MSIE) { "Accept:", 7, client_accept }, -#endif /* defined(DETECT_MSIE_IMAGES) */ -#ifdef FORCE_LOAD +#endif /* defined(FEATURE_IMAGE_DETECT_MSIE) */ +#ifdef FEATURE_FORCE_LOAD { "Host:", 5, client_host }, -#endif /* def FORCE_LOAD */ +#endif /* def FEATURE_FORCE_LOAD */ /* { "if-modified-since:", 18, crumble }, */ + { "Keep-Alive:", 11, crumble }, + { "connection:", 11, crumble }, + { "proxy-connection:", 17, crumble }, { NULL, 0, NULL } }; -const struct interceptors intercept_patterns[] = { - { "show-proxy-args", 14, show_proxy_args }, - { "ijb-send-banner", 14, ijb_send_banner }, -#ifdef TRUST_FILES - { "ij-untrusted-url", 15, ij_untrusted_url }, -#endif /* def TRUST_FILES */ - { "show-url-info", 13, ijb_show_url_info }, - { NULL, 0, NULL } -}; const struct parsers server_patterns[] = { { "set-cookie:", 11, server_set_cookie }, { "connection:", 11, crumble }, -#if defined(PCRS) || defined(KILLPOPUPS) { "Content-Type:", 13, content_type }, -#endif /* defined(PCRS) || defined(KILLPOPUPS) */ -#ifdef PCRS { "Content-Length:", 15, content_length }, -#endif /* def PCRS */ { NULL, 0, NULL } }; @@ -264,11 +290,13 @@ void (* const add_client_headers[])(struct client_state *) = { client_cookie_adder, client_x_forwarded_adder, client_xtra_adder, + connection_close_adder, NULL }; void (* const add_server_headers[])(struct client_state *) = { + connection_close_adder, NULL }; @@ -481,14 +509,6 @@ char *sed(const struct parsers pats[], void (* const more_headers[])(struct clie (*f)(csp); } - /* add the blank line at the end of the header, if necessary */ - if ( (csp->headers->last == NULL) - || (csp->headers->last->str == NULL) - || (*csp->headers->last->str != '\0') ) - { - enlist(csp->headers, ""); - } - hdr = list_to_text(csp->headers); return(hdr); @@ -516,6 +536,8 @@ void free_http_request(struct http_request *http) freez(http->hostport); freez(http->path); freez(http->ver); + freez(http->host_ip_addr_str); + freez(http->user_agent); } @@ -545,7 +567,6 @@ void parse_http_request(char *req, struct http_request *http, struct client_stat http->cmd = strdup(req); buf = strdup(req); - n = ssplit(buf, " \r\n", v, SZ(v), 1, 1); if (n == 3) @@ -559,35 +580,19 @@ void parse_http_request(char *req, struct http_request *http, struct client_stat http->ver = strdup(v[2]); } -#ifdef WEBDAV - -/* This next line is a little ugly, but it simplifies the if statement below. */ -/* Basically if using webDAV, we want the OR condition to use these too. */ - -/* - * by haroon - * These are the headers as defined in RFC2518 to add webDAV support - */ - -#define OR_WEBDAV || \ - (0 == strcmpic(v[0], "propfind")) || \ - (0 == strcmpic(v[0], "proppatch")) || \ - (0 == strcmpic(v[0], "move")) || \ - (0 == strcmpic(v[0], "copy")) || \ - (0 == strcmpic(v[0], "mkcol")) || \ - (0 == strcmpic(v[0], "lock")) || \ - (0 == strcmpic(v[0], "unlock")) - -#else /* No webDAV support is enabled. Provide an empty OR_WEBDAV macro. */ - -#define OR_WEBDAV - -#endif - /* or it could be a GET or a POST (possibly webDAV too) */ - if ((strcmpic(v[0], "get") == 0) || - (strcmpic(v[0], "head") == 0) OR_WEBDAV || - (strcmpic(v[0], "post") == 0)) + if ((0 == strcmpic(v[0], "get")) + || (0 == strcmpic(v[0], "head")) + || (0 == strcmpic(v[0], "post")) + /* These are the headers as defined in RFC2518 to add webDAV support: */ + || (0 == strcmpic(v[0], "propfind")) + || (0 == strcmpic(v[0], "proppatch")) + || (0 == strcmpic(v[0], "move")) + || (0 == strcmpic(v[0], "copy")) + || (0 == strcmpic(v[0], "mkcol")) + || (0 == strcmpic(v[0], "lock")) + || (0 == strcmpic(v[0], "unlock")) + ) { http->ssl = 0; http->gpc = strdup(v[0]); @@ -607,11 +612,29 @@ void parse_http_request(char *req, struct http_request *http, struct client_stat url = NULL; } - if (url && (p = strchr(url, '/'))) + if (url) { - http->path = strdup(p); - *p = '\0'; - http->hostport = strdup(url); + if ((p = strchr(url, '/'))) + { + http->path = strdup(p); + *p = '\0'; + http->hostport = strdup(url); + } + /* + * Repair broken HTTP requests that don't contain a path + */ + else + { + /* Repair hostport & path */ + http->path = strdup("/"); + http->hostport = strdup(url); + + /* Even repair cmd in case we're just forwarding. Boy are we nice ;-) */ + freez(http->cmd); + http->cmd = strsav(http->cmd, http->gpc); + http->cmd = strsav(http->cmd, " / "); + http->cmd = strsav(http->cmd, http->ver); + } } } } @@ -693,8 +716,6 @@ char *crumble(const struct parsers *v, char *s, struct client_state *csp) } -#if defined(PCRS) || defined(KILLPOPUPS) - /********************************************************************* * * Function : content_type @@ -711,24 +732,24 @@ char *crumble(const struct parsers *v, char *s, struct client_state *csp) *********************************************************************/ char *content_type(const struct parsers *v, char *s, struct client_state *csp) { - if (strstr (s, " text/") || strstr (s, "application/x-javascript")) - csp->is_text = 1; + if (strstr(s, " text/") || strstr(s, "application/x-javascript")) + csp->content_type = CT_TEXT; + else if (strstr(s, " image/gif")) + csp->content_type = CT_GIF; else - csp->is_text = 0; + csp->content_type = 0; return(strdup(s)); } -#endif /* defined(PCRS) || defined(KILLPOPUPS) */ -#ifdef PCRS /********************************************************************* * * Function : content_length * - * Description : Crunch Content-Length header if & only if we are - * filtering this page through PCRS. + * Description : Adjust Content-Length header if we modified + * the body. * * Parameters : * 1 : v = ignored @@ -741,19 +762,19 @@ char *content_type(const struct parsers *v, char *s, struct client_state *csp) char *content_length(const struct parsers *v, char *s, struct client_state *csp) { if (csp->content_length != 0) /* Content has been modified */ - { - s = (char *) zalloc(100); - sprintf(s, "Content-Length: %d", csp->content_length); - log_error(LOG_LEVEL_HEADER, "Adjust Content-Length to %d", csp->content_length); - return(s); - } + { + s = (char *) zalloc(100); + sprintf(s, "Content-Length: %d", csp->content_length); + + log_error(LOG_LEVEL_HEADER, "Adjust Content-Length to %d", csp->content_length); + return(s); + } else { return(strdup(s)); } -} -#endif /* def PCRS */ +} /********************************************************************* @@ -775,17 +796,17 @@ char *content_length(const struct parsers *v, char *s, struct client_state *csp) char *client_referrer(const struct parsers *v, char *s, struct client_state *csp) { const char * newval; -#ifdef FORCE_LOAD +#ifdef FEATURE_FORCE_LOAD /* Since the referrer can include the prefix even * even if the request itself is non-forced, we must * clean it unconditionally */ strclean(s, FORCE_PREFIX); -#endif /* def FORCE_LOAD */ +#endif /* def FEATURE_FORCE_LOAD */ -#ifdef TRUST_FILES +#ifdef FEATURE_TRUST csp->referrer = strdup(s); -#endif /* def TRUST_FILES */ +#endif /* def FEATURE_TRUST */ /* * Are we sending referer? @@ -861,8 +882,9 @@ char *client_referrer(const struct parsers *v, char *s, struct client_state *csp * * Function : client_uagent * - * Description : Handle the "user-agent" config setting properly. - * Called from `sed'. + * Description : Handle the "user-agent" config setting properly + * and remember its original value to enable browser + * bug workarounds. Called from `sed'. * * Parameters : * 1 : v = ignored @@ -877,7 +899,13 @@ char *client_uagent(const struct parsers *v, char *s, struct client_state *csp) { const char * newval; -#ifdef DETECT_MSIE_IMAGES + /* Save the client's User-Agent: value */ + if (strlen(s) >= 12) + { + csp->http->user_agent = strdup(s + 12); + } + +#ifdef FEATURE_IMAGE_DETECT_MSIE if (strstr (s, "MSIE ")) { /* This is Microsoft Internet Explorer. @@ -885,7 +913,7 @@ char *client_uagent(const struct parsers *v, char *s, struct client_state *csp) */ csp->accept_types |= ACCEPT_TYPE_IS_MSIE; } -#endif /* def DETECT_MSIE_IMAGES */ +#endif /* def FEATURE_IMAGE_DETECT_MSIE */ if ((csp->action->flags & ACTION_HIDE_USER_AGENT) == 0) { @@ -1048,7 +1076,7 @@ char *client_x_forwarded(const struct parsers *v, char *s, struct client_state * } -#if defined(DETECT_MSIE_IMAGES) +#if defined(FEATURE_IMAGE_DETECT_MSIE) /********************************************************************* * * Function : client_accept @@ -1068,7 +1096,7 @@ char *client_x_forwarded(const struct parsers *v, char *s, struct client_state * *********************************************************************/ char *client_accept(const struct parsers *v, char *s, struct client_state *csp) { -#ifdef DETECT_MSIE_IMAGES +#ifdef FEATURE_IMAGE_DETECT_MSIE if (strstr (s, "image/gif")) { /* Client will accept HTML. If this seems counterintuitive, @@ -1080,12 +1108,12 @@ char *client_accept(const struct parsers *v, char *s, struct client_state *csp) { csp->accept_types |= ACCEPT_TYPE_MSIE_IMAGE; } -#endif /* def DETECT_MSIE_IMAGES */ +#endif /* def FEATURE_IMAGE_DETECT_MSIE */ return(strdup(s)); } -#endif /* defined(DETECT_MSIE_IMAGES) */ +#endif /* defined(FEATURE_IMAGE_DETECT_MSIE) */ @@ -1212,6 +1240,28 @@ void client_x_forwarded_adder(struct client_state *csp) } +/********************************************************************* + * + * Function : connection_close_adder + * + * Description : Adds a "Connection: close" header to csp->headers + * as a temporary fix for the needed but missing HTTP/1.1 + * support. Called from `sed'. + * FIXME: This whole function shouldn't be neccessary! + * + * Parameters : + * 1 : csp = Current client state (buffers, headers, etc...) + * + * Returns : N/A + * + *********************************************************************/ +void connection_close_adder(struct client_state *csp) +{ + enlist(csp->headers, strdup("Connection: close")); + +} + + /********************************************************************* * * Function : server_set_cookie @@ -1230,12 +1280,12 @@ void client_x_forwarded_adder(struct client_state *csp) *********************************************************************/ char *server_set_cookie(const struct parsers *v, char *s, struct client_state *csp) { -#ifdef JAR_FILES +#ifdef FEATURE_COOKIE_JAR if (csp->config->jar) { fprintf(csp->config->jar, "%s\t%s\n", csp->http->host, (s + v->len + 1)); } -#endif /* def JAR_FILES */ +#endif /* def FEATURE_COOKIE_JAR */ if ((csp->action->flags & ACTION_NO_COOKIE_SET) != 0) { @@ -1247,7 +1297,7 @@ char *server_set_cookie(const struct parsers *v, char *s, struct client_state *c } -#ifdef FORCE_LOAD +#ifdef FEATURE_FORCE_LOAD /********************************************************************* * * Function : client_host @@ -1272,10 +1322,10 @@ char *client_host(const struct parsers *v, char *s, struct client_state *csp) return(cleanhost); } -#endif /* def FORCE_LOAD */ +#endif /* def FEATURE_FORCE_LOAD */ -#ifdef FORCE_LOAD +#ifdef FEATURE_FORCE_LOAD /********************************************************************* * * Function : strclean @@ -1309,7 +1359,7 @@ int strclean(const char *string, const char *substring) return(hits); } -#endif /* def FORCE_LOAD */ +#endif /* def FEATURE_FORCE_LOAD */ /*