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/* |
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* mod_czs -- nuke iso8859-2 characters |
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* sets `Contnet-type: text/html; charset=foobar' based on user agent string |
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* from client browser |
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* |
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* Dobrica Pavlinusic <dpavlin@rot13.org> |
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* Robert Avilov <ravilov@linux.hr> (some fixes of ua_charset part) |
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* |
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* based on mod_format by Stephen F. Booth and |
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* mod_mocrify by Peter Triller, Ernst Bachmann |
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* |
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* Usage: httpd.conf |
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* AddHandler czs .html |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#include "httpd.h" |
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#include "http_main.h" |
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#include "http_config.h" |
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#include "http_log.h" |
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#include "http_protocol.h" |
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|
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module MODULE_VAR_EXPORT mod_czs; |
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|
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FILE *in; |
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|
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static int czs_handler(request_rec *r) { |
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|
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char buffer[MAX_STRING_LEN] = "undefined buffer content"; |
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char *b; |
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char *rexp = "< *META *HTTP-EQUIV=\"(Content-Type)\" *CONTENT=\"(text/html[^\"]+)\" *>"; |
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regex_t *regexp; |
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int nsub = 10; |
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regmatch_t regm[10]; |
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int i,f_ch=MAX_STRING_LEN,l_ch=0; |
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|
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if(r->method_number != M_GET) |
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return DECLINED; |
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if(r->finfo.st_mode == 0) |
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return NOT_FOUND; |
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|
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in = ap_pfopen(r->pool, r->filename, "r"); |
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|
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if(in == NULL) { |
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ap_log_reason("file permissions deny server access", r->filename, r); |
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return FORBIDDEN; |
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} |
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#ifdef DEBUG |
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if(r->args != 0 || ap_table_get(r->notes,"do_czs")) { |
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ap_table_setn(r->headers_out, "X-czs_filename", r->filename); |
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ap_table_setn(r->headers_out, "X-czs_content-type", r->content_type); |
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if (r->args != 0) { |
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ap_table_setn(r->headers_out, "X-czs_args", r->args); |
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} |
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} |
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#endif |
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|
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#ifdef TEST_QUERYSTRINGV |
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if(r->args == 0 && !ap_table_get(r->notes,"do_czs") || |
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strstr(r->content_type,"cgi") != NULL) { |
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#else |
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if(!ap_table_get(r->notes,"do_czs") || |
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strstr(r->content_type,"cgi") != NULL) { |
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#endif |
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return DECLINED; |
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/* ap_send_fd(in, r); */ |
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} else { |
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|
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regexp = ap_pregcomp(r->pool, rexp, REG_EXTENDED | REG_ICASE ); |
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|
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if (regexp == NULL) { |
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ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, r, |
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"unable to compile pattern \"%s\"", rexp); |
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return DECLINED; |
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} |
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|
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ap_soft_timeout("send", r); |
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ap_send_http_header(r); |
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|
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if(r->header_only) { |
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ap_kill_timeout(r); |
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ap_pfclose(r->pool, in); |
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return OK; |
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} |
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|
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|
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while(fgets(buffer,MAX_STRING_LEN,in)) { |
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for(i=0; i<MAX_STRING_LEN && buffer[i]; i++) { |
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switch ( buffer[i] ) { |
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case '¹': buffer[i]='s'; break; |
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case 'ð': buffer[i]='d'; break; |
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case 'è': buffer[i]='c'; break; |
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case 'æ': buffer[i]='c'; break; |
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case '¾': buffer[i]='z'; break; |
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case '©': buffer[i]='S'; break; |
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case 'Ð': buffer[i]='D'; break; |
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case 'È': buffer[i]='C'; break; |
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case 'Æ': buffer[i]='C'; break; |
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case '®': buffer[i]='Z'; break; |
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} |
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} |
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|
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|
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if (ap_regexec(regexp, buffer, nsub, regm, 0) == 0) { |
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#if 0 |
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ap_rprintf(r,"<!-- num replacements: %02x buffer:\n%s\n",nsub,buffer); |
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ap_rprintf(r,"\n-->\n",i,regm[i].rm_so,regm[i].rm_eo); |
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#endif |
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for (i=0; i<10; i++) { |
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if (regm[i].rm_so != -1) { |
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if (regm[i].rm_so < f_ch) |
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f_ch = regm[i].rm_so; |
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if (regm[i].rm_eo > l_ch) |
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l_ch = regm[i].rm_eo; |
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} |
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#if 0 |
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ap_rprintf(r,"<!-- %02x: %02x-%02x -->\n",i,regm[i].rm_so,regm[i].rm_eo); |
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#endif |
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} |
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buffer[f_ch]=0; |
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ap_rprintf(r,"%s", ap_pstrcat(r->pool, buffer,"<!-- removed charset -->", buffer+l_ch, NULL)); |
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} else { |
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ap_rprintf(r,"%s",buffer); |
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} |
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} |
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/* ap_pregfree(r->pool, regexp); */ |
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} |
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|
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ap_kill_timeout(r); |
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ap_pfclose(r->pool, in); |
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return OK; |
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} |
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|
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int translate_path(request_rec *r) { |
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char *uri = r->uri; |
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request_rec *subr; |
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char *type = NULL; |
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|
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#ifdef DEBUG |
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ap_table_setn(r->headers_out, "X-translate", r->uri); |
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#endif |
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if (uri[0]=='/' && (uri[1] | 0x20) =='c' && (uri[2] | 0x20)=='z' && (uri[3] | 0x20) =='s') { |
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#if 0 |
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ap_table_setn(r->headers_out, "Location", ap_pstrcat(r->pool, uri+2, "?czs", NULL)); |
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return REDIRECT; |
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#endif |
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subr = (request_rec *) ap_sub_req_lookup_uri(r->uri+4, r); |
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r->filename=ap_pstrdup(r->pool, subr->filename); |
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type = subr->content_type; |
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#ifdef DEBUG |
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ap_table_setn(r->headers_out, "X-translate-content-type", type); |
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#endif |
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if (type == NULL) { |
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return DECLINED; /* hm? */ |
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} |
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ap_table_setn(r->notes,"do_czs",1); |
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ap_destroy_sub_req(subr); |
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return OK; |
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} |
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|
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return DECLINED; |
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} |
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|
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static int add_charset_header(request_rec * r) |
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{ |
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const char *ua, *ct; |
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|
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ua = ap_table_get(r->headers_in, "User-Agent"); |
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if (ua == NULL) |
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ua = "<unknown>"; |
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|
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ct = r->content_type; |
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|
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if (ct != NULL && !ap_table_get(r->notes,"do_czs")) { |
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|
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if (strstr(ct, "text/html") == NULL) |
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return DECLINED; /* Don't mess with other types */ |
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|
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if (strstr(ua, "Mac") != NULL) { |
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if (strstr(ua, "MSIE") != NULL) |
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r->content_type = "text/html; charset=x-mac-roman"; |
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else |
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r->content_type = "text/html; charset=MacCE"; |
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} else |
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r->content_type = "text/html; charset=iso-8859-2"; |
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} |
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|
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#ifdef DEBUG |
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ap_table_setn(r->headers_out, "X-Content-Type", ct); |
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ap_table_setn(r->headers_out, "X-new-Content-Type", r->content_type); |
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ap_table_setn(r->headers_out, "X-User-Agent", ua); |
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#endif |
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return DECLINED; |
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} |
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|
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|
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/* Dispatch list of content handlers */ |
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static const handler_rec czs_handlers[] = { |
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{ "czs", czs_handler }, |
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{ NULL, NULL } |
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}; |
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|
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/* Dispatch list for API hooks */ |
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module MODULE_VAR_EXPORT czs_module = { |
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STANDARD_MODULE_STUFF, |
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NULL, /* module initializer */ |
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NULL, /* create per-dir config structures */ |
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NULL, /* merge per-dir config structures */ |
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NULL, /* create per-server config structures */ |
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NULL, /* merge per-server config structures */ |
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NULL, /* table of config file commands */ |
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czs_handlers, /* [#8] MIME-typed-dispatched handlers */ |
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translate_path, /* [#1] URI to filename translation */ |
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NULL, /* [#4] validate user id from request */ |
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NULL, /* [#5] check if the user is ok _here_ */ |
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NULL, /* [#2] check access by host address */ |
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NULL, /* [#6] determine MIME type */ |
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add_charset_header, /* [#7] pre-run fixups */ |
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NULL, /* [#9] log a transaction */ |
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NULL, /* [#3] header parser */ |
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NULL, /* child_init */ |
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NULL, /* child_exit */ |
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NULL /* [#0] post read-request */ |
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#ifdef EAPI |
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,NULL, /* EAPI: add_module */ |
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NULL, /* EAPI: remove_module */ |
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NULL, /* EAPI: rewrite_command */ |
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NULL /* EAPI: new_connection */ |
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#endif |
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}; |
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