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estproxy.c
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/*************************************************************************************************
* A proxy with highlighting
* Copyright (C) 2004-2007 Mikio Hirabayashi
* This file is part of Hyper Estraier.
* Hyper Estraier is free software; you can redistribute it and/or modify it under the terms of
* the GNU Lesser General Public License as published by the Free Software Foundation; either
* version 2.1 of the License or any later version. Hyper Estraier is distributed in the hope
* that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
* You should have received a copy of the GNU Lesser General Public License along with Hyper
* Estraier; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA.
*************************************************************************************************/
#if defined(MYFCGI)
#include <fcgi_stdio.h>
#endif
#include "estraier.h"
#include "estmtdb.h"
#include "estnode.h"
#include "myconf.h"
#define AGENTNAME "EstProxy" /* name of the user agent */
#define CONFSUFFIX ".conf" /* suffix of the configuration file */
#define NUMBUFSIZ 32 /* size of a buffer for a number */
#define URIBUFSIZ 8192 /* size of a buffer for an URI */
#define OUTBUFSIZ 262144 /* size of the output buffer */
#define SOCKBUFSIZ 8192 /* size of the socket buffer */
#define MINIBNUM 31 /* bucket number of map for trivial use */
#define DRAFTCMD "[DRAFT]" /* built-in command for document draft */
#define TEXTCMD "[TEXT]" /* built-in command for plain text */
#define HTMLCMD "[HTML]" /* built-in command for HTML */
#define MIMECMD "[MIME]" /* built-in command for MIME */
/* global variables for configurations */
const char *g_conffile = NULL; /* path of the configuration file */
const CBLIST *g_replexprs = NULL; /* list of URL replacement expressions */
const CBLIST *g_rxlist = NULL; /* list of regular expressions for URL allowing */
int g_passaddr = FALSE; /* whether to pass the IP address of clients */
int g_limitsize = 0; /* limit size of data to receive */
CBMAP *g_urlrules = NULL; /* rules of URLs */
CBMAP *g_mtrules = NULL; /* rules of media types */
int g_language = 0; /* preferred language */
int g_shownavi = 0; /* whether to show navigation bar */
/* global variables for parameters */
const char *p_url = NULL; /* target URL */
const CBLIST *p_words = NULL; /* words to be highlighted */
int p_once = FALSE; /* whether to use direct link */
/* other global variables */
char g_outbuf[OUTBUFSIZ]; /* output buffer */
const char *g_remoteaddr = NULL; /* IP address of the client */
const char *g_scriptname = NULL; /* name of the script */
const char *g_hostname = NULL; /* name of the host */
const char *g_scriptpath = NULL; /* path of the script */
const char *g_agentname = NULL; /* name of the user agent */
/* color definitions */
const char *g_wordcolors[] = { /* highlighted colors */
"#ffff77",
"#ffaaaa",
"#bbbbff",
"#aaffaa",
"#88ffff",
"#ff99ff"
};
/* function prototypes */
int main(int argc, char **argv);
static int realmain(int argc, char **argv);
static void showerror(const char *msg);
static const char *skiplabel(const char *str);
static CBMAP *getparameters(void);
static void xmlprintf(const char *format, ...);
static char *replaceurl(const char *uri);
static void sendform(void);
static char *urltopath(const char *url);
static int getlocalconnection(const char *url, int *codep, CBMAP *heads);
static void senddirlist(const char *path);
static char *readall(int fd, int *sp);
static void passlocalrawdata(int fd);
static void sendlocaldata(void);
static int gethttpconnection(const char *url, int *codep, CBMAP *heads);
static char *recvall(int sock, int *sp);
static void passhttprawdata(int sock);
static void modifylocation(CBMAP *heads, const char *name);
static void sendhttpdata(void);
static void sendnavibar(void);
static void sendsnippet(const char *str);
static const char *langstr(void);
static void sendpagefromdraft(const char *buf, int size, const char *penc);
static void sendpagefromtext(const char *buf, int size, const char *penc);
static void sendpagefromhtml(const char *buf, int size, const char *penc);
static char *htmlenc(const char *str);
static char *htmlrawtext(const char *html);
static void sendpagefrommime(const char *buf, int size, const char *penc);
static void sendmimepart(const char *body, int bsiz, CBMAP *attrs, const char *penc);
static char *mimestr(const char *mime);
static void sendpagewithxcmd(const char *buf, int size, const char *penc, const char *cmd);
/* main routine */
int main(int argc, char **argv){
#if defined(MYFCGI)
static int cnt = 0;
est_proc_env_reset();
est_init_net_env();
while(FCGI_Accept() >= 0){
realmain(argc, argv);
fflush(stdout);
if(++cnt >= 256) exit(0);
}
est_free_net_env();
return 0;
#else
est_proc_env_reset();
est_init_net_env();
realmain(argc, argv);
est_free_net_env();
return 0;
#endif
}
/* real main routine */
static int realmain(int argc, char **argv){
CBLIST *lines, *rplist, *rxlist, *wlist, *list;
CBMAP *params, *urlmap, *mtmap;
const char *rp, *pv;
char *tmp, *wp, numbuf[NUMBUFSIZ];
int i, len, allow;
setvbuf(stdout, g_outbuf, _IOFBF, OUTBUFSIZ);
if((rp = getenv("REMOTE_ADDR")) != NULL){
g_remoteaddr = rp;
} else {
g_remoteaddr = "0.0.0.0";
}
g_scriptname = argv[0];
if((rp = getenv("SCRIPT_NAME")) != NULL) g_scriptname = rp;
g_hostname = est_get_host_name();
if((rp = getenv("HTTP_HOST")) != NULL) g_hostname = rp;
g_scriptpath = g_scriptname;
g_agentname = AGENTNAME;
if((rp = getenv("HTTP_USER_AGENT")) != NULL) g_agentname = rp;
if((rp = strrchr(g_scriptname, '/')) != NULL) g_scriptname = rp + 1;
tmp = cbmalloc(strlen(g_scriptname) + strlen(CONFSUFFIX) + 1);
sprintf(tmp, "%s", g_scriptname);
cbglobalgc(tmp, free);
if(!(wp = strrchr(tmp, '.'))) wp = tmp + strlen(tmp);
sprintf(wp, "%s", CONFSUFFIX);
g_conffile = tmp;
if(!(lines = cbreadlines(g_conffile))) showerror("the configuration file is missing.");
cbglobalgc(lines, (void (*)(void *))cblistclose);
rplist = cblistopen();
cbglobalgc(rplist, (void (*)(void *))cblistclose);
rxlist = cblistopen();
cbglobalgc(rxlist, (void (*)(void *))cblistclose);
urlmap = cbmapopenex(MINIBNUM);
cbglobalgc(urlmap, (void (*)(void *))cbmapclose);
mtmap = cbmapopenex(MINIBNUM);
cbglobalgc(mtmap, (void (*)(void *))cbmapclose);
for(i = 0; i < cblistnum(lines); i++){
rp = cblistval(lines, i, NULL);
if(cbstrfwimatch(rp, "replace:")){
rp = skiplabel(rp);
if(*rp != '\0') cblistpush(rplist, rp, -1);
} else if(cbstrfwimatch(rp, "allowrx:")){
rp = skiplabel(rp);
if(*rp != '\0'){
tmp = cbsprintf("a*I:%s", rp);
cblistpushbuf(rxlist, tmp, strlen(tmp));
}
} else if(cbstrfwimatch(rp, "denyrx:")){
rp = skiplabel(rp);
if(*rp != '\0'){
tmp = cbsprintf("d*I:%s", rp);
cblistpushbuf(rxlist, tmp, strlen(tmp));
}
} else if(cbstrfwimatch(rp, "passaddr:")){
g_passaddr = atoi(skiplabel(rp)) > 0;
} else if(cbstrfwimatch(rp, "limitsize:")){
g_limitsize = atoi(skiplabel(rp)) * 1024 * 1024;
} else if(cbstrfwimatch(rp, "urlrule:")){
rp = skiplabel(rp);
if((pv = strstr(rp, "{{!}}")) != NULL) cbmapput(urlmap, rp, pv - rp, pv + 5, -1, TRUE);
} else if(cbstrfwimatch(rp, "typerule:")){
rp = skiplabel(rp);
if((pv = strstr(rp, "{{!}}")) != NULL) cbmapput(mtmap, rp, pv - rp, pv + 5, -1, TRUE);
} else if(cbstrfwimatch(rp, "language:")){
g_language = atoi(skiplabel(rp));
} else if(cbstrfwimatch(rp, "shownavi:")){
g_shownavi = atoi(skiplabel(rp)) > 0;
}
}
g_replexprs = rplist;
g_rxlist = rxlist;
g_urlrules = urlmap;
g_mtrules = mtmap;
params = getparameters();
cbglobalgc(params, (void (*)(void *))cbmapclose);
wlist = cblistopen();
cbglobalgc(wlist, (void (*)(void *))cblistclose);
if(!(p_url = cbmapget(params, "url", -1, NULL))) p_url = "";
for(i = 0; i < 256; i++){
len = sprintf(numbuf, "word%d", i);
if((rp = cbmapget(params, numbuf, len, NULL)) != NULL && *rp != '\0')
cblistpush(wlist, rp, -1);
}
if((rp = cbmapget(params, "words", -1, NULL)) != NULL){
tmp = est_regex_replace(rp, "(\xe3\x80\x80)+", " ");
list = cbsplit(tmp, -1, ", \t\n\r");
for(i = 0; i < cblistnum(list); i++){
rp = cblistval(list, i, NULL);
if(*rp != '\0') cblistpush(wlist, rp, -1);
}
cblistclose(list);
free(tmp);
}
if((rp = cbmapget(params, "once", -1, NULL)) != NULL) p_once = atoi(rp) > 0;
p_words = wlist;
if(*p_url == '\0'){
sendform();
} else {
allow = FALSE;
tmp = replaceurl(p_url);
for(i = 0; i < cblistnum(rxlist); i++){
rp = cblistval(rxlist, i, NULL);
switch(*rp){
case 'a':
rp++;
if(est_regex_match_str(rp, tmp)) allow = TRUE;
break;
case 'd':
rp++;
if(est_regex_match_str(rp, tmp)) allow = FALSE;
break;
default:
break;
}
}
if(allow && cbstrfwimatch(tmp, "file://")){
sendlocaldata();
} else if(allow && cbstrfwimatch(tmp, "http://")){
sendhttpdata();
} else {
printf("Status: 400 Forbidden\r\n");
printf("Content-Type: text/plain; charset=UTF-8\r\n");
printf("\r\n");
printf("Error: the requested URL is not allowed\n");
}
free(tmp);
}
return 0;
}
/* show the error page and exit */
static void showerror(const char *msg){
printf("Status: 500 Internal Server Error\r\n");
printf("Content-Type: text/plain; charset=UTF-8\r\n");
printf("\r\n");
printf("Error: %s\n", msg);
exit(1);
}
/* skip the label of a line */
static const char *skiplabel(const char *str){
if(!(str = strchr(str, ':'))) return "";
str++;
while(*str != '\0' && (*str == ' ' || *str == '\t')){
str++;
}
return str;
}
/* get CGI parameters */
static CBMAP *getparameters(void){
int maxlen = 1024 * 1024 * 32;
CBMAP *map, *attrs;
CBLIST *pairs, *parts;
const char *rp, *body;
char *buf, *key, *val, *dkey, *dval, *wp, *bound, *fbuf, *aname;
int i, len, c, blen, flen;
map = cbmapopenex(37);
buf = NULL;
len = 0;
if((rp = getenv("REQUEST_METHOD")) != NULL && !strcmp(rp, "POST") &&
(rp = getenv("CONTENT_LENGTH")) != NULL && (len = atoi(rp)) > 0){
if(len > maxlen) len = maxlen;
buf = cbmalloc(len + 1);
for(i = 0; i < len && (c = getchar()) != EOF; i++){
buf[i] = c;
}
buf[i] = '\0';
if(i != len){
free(buf);
buf = NULL;
}
} else if((rp = getenv("QUERY_STRING")) != NULL){
buf = cbmemdup(rp, -1);
len = strlen(buf);
}
if(buf && len > 0){
if((rp = getenv("CONTENT_TYPE")) != NULL && cbstrfwmatch(rp, "multipart/form-data") &&
(rp = strstr(rp, "boundary=")) != NULL){
rp += 9;
bound = cbmemdup(rp, -1);
if((wp = strchr(bound, ';')) != NULL) *wp = '\0';
parts = cbmimeparts(buf, len, bound);
for(i = 0; i < cblistnum(parts); i++){
body = cblistval(parts, i, &blen);
attrs = cbmapopen();
fbuf = cbmimebreak(body, blen, attrs, &flen);
if((rp = cbmapget(attrs, "NAME", -1, NULL)) != NULL){
cbmapput(map, rp, -1, fbuf, flen, FALSE);
aname = cbsprintf("%s-filename", rp);
if((rp = cbmapget(attrs, "FILENAME", -1, NULL)) != NULL)
cbmapput(map, aname, -1, rp, -1, FALSE);
free(aname);
}
free(fbuf);
cbmapclose(attrs);
}
cblistclose(parts);
free(bound);
} else {
pairs = cbsplit(buf, -1, "&");
for(i = 0; i < cblistnum(pairs); i++){
key = cbmemdup(cblistval(pairs, i, NULL), -1);
if((val = strchr(key, '=')) != NULL){
*(val++) = '\0';
dkey = cburldecode(key, NULL);
dval = cburldecode(val, NULL);
cbmapput(map, dkey, -1, dval, -1, FALSE);
free(dval);
free(dkey);
}
free(key);
}
cblistclose(pairs);
}
}
free(buf);
return map;
}
/* output escaped string */
static void xmlprintf(const char *format, ...){
va_list ap;
const char *rp;
char *tmp, cbuf[32], *ebuf;
unsigned char c;
int cblen, cnt, mlen;
va_start(ap, format);
while(*format != '\0'){
if(*format == '%'){
cbuf[0] = '%';
cblen = 1;
format++;
while(strchr("0123456789 .+-", *format) && *format != '\0' && cblen < sizeof(cbuf) - 1){
cbuf[cblen++] = *format;
format++;
}
cbuf[cblen++] = *format;
cbuf[cblen] = '\0';
switch(*format){
case 's':
tmp = va_arg(ap, char *);
if(!tmp) tmp = "(null)";
printf(cbuf, tmp);
break;
case 'd':
printf(cbuf, va_arg(ap, int));
break;
case 'o': case 'u': case 'x': case 'X': case 'c':
printf(cbuf, va_arg(ap, unsigned int));
break;
case 'e': case 'E': case 'f': case 'g': case 'G':
printf(cbuf, va_arg(ap, double));
break;
case '@':
tmp = va_arg(ap, char *);
if(!tmp) tmp = "(null)";
ebuf = NULL;
if(cblen > 2){
mlen = atoi(cbuf + 1) * 10;
cnt = 0;
rp = tmp;
while(*rp != '\0'){
if((*rp & 0x80) == 0x00){
cnt += 10;
} else if((*rp & 0xe0) == 0xc0){
cnt += 15;
} else if((*rp & 0xf0) == 0xe0 || (*rp & 0xf8) == 0xf0){
cnt += 20;
}
if(cnt > mlen){
ebuf = cbmemdup(tmp, rp - tmp);
tmp = ebuf;
break;
}
rp++;
}
}
while(*tmp){
switch(*tmp){
case '&': printf("&"); break;
case '<': printf("<"); break;
case '>': printf(">"); break;
case '"': printf("""); break;
default:
if(!((*tmp >= 0 && *tmp <= 0x8) || (*tmp >= 0x0e && *tmp <= 0x1f))) putchar(*tmp);
break;
}
tmp++;
}
if(ebuf){
free(ebuf);
printf("...");
}
break;
case '?':
tmp = va_arg(ap, char *);
if(!tmp) tmp = "(null)";
while(*tmp){
c = *(unsigned char *)tmp;
if((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
(c >= '0' && c <= '9') || (c != '\0' && strchr("_-.", c))){
putchar(c);
} else {
printf("%%%02X", c);
}
tmp++;
}
break;
case '%':
putchar('%');
break;
}
} else {
putchar(*format);
}
format++;
}
va_end(ap);
}
/* make a URI to be shown */
static char *replaceurl(const char *uri){
char *turi, *bef, *aft, *pv, *nuri;
int i;
turi = cbmemdup(uri, -1);
for(i = 0; i < cblistnum(g_replexprs); i++){
bef = cbmemdup(cblistval(g_replexprs, i, NULL), -1);
if((pv = strstr(bef, "{{!}}")) != NULL){
*pv = '\0';
aft = pv + 5;
} else {
aft = "";
}
nuri = est_regex_replace(turi, bef, aft);
free(turi);
turi = nuri;
free(bef);
}
return turi;
}
/* show the input form */
static void sendform(void){
printf("Content-Type: text/html; charset=UTF-8\r\n");
printf("\r\n");
xmlprintf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
xmlprintf("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\""
" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n");
xmlprintf("<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n");
xmlprintf("<head>\n");
xmlprintf("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n");
xmlprintf("<meta http-equiv=\"Content-Style-Type\" content=\"text/css\" />\n");
xmlprintf("<meta name=\"robots\" content=\"NOFOLLOW\" />\n");
xmlprintf("<link rel=\"contents\" href=\"./\" />\n");
xmlprintf("<title>%@/%@</title>\n", AGENTNAME, est_version);
xmlprintf("<style type=\"text/css\">html {\n");
xmlprintf(" margin: 0em 0em; padding: 0em 0em;\n");
xmlprintf(" background: #ffffff none;\n");
xmlprintf("}\n");
xmlprintf("body {\n");
xmlprintf(" margin: 2em 2em; padding: 0em 0em;\n");
xmlprintf(" color: #111111;\n");
xmlprintf("}\n");
xmlprintf("div.form_frame {\n");
xmlprintf(" margin: 0em 0em; padding: 0.5em 0.5em;\n");
xmlprintf(" background: #eeeeff none; border: solid 1pt #bbbbcc;\n");
xmlprintf("}\n");
xmlprintf("div.form_basic, div.form_extension {\n");
xmlprintf(" margin: 0.5em 0.5em; padding: 0em 0em;\n");
xmlprintf(" color: #111111;\n");
xmlprintf("}\n");
xmlprintf("label {\n");
xmlprintf(" margin-left: 0.8em;\n");
xmlprintf(" color: #333333;\n");
xmlprintf("}\n");
xmlprintf("</style>\n");
xmlprintf("</head>\n");
xmlprintf("<body>\n");
xmlprintf("<h1>%@/%@</h1>\n", AGENTNAME, est_version);
xmlprintf("<div class=\"form_frame\">\n");
xmlprintf("<form action=\"%@\" method=\"get\" id=\"form_self\">\n", g_scriptname);
xmlprintf("<div class=\"form_basic\">\n");
xmlprintf("<label for=\"url\" class=\"label\">URL:</label>\n");
xmlprintf("<input type=\"text\" name=\"url\" value=\"\""
" size=\"64\" id=\"url\" class=\"url\" tabindex=\"1\" accesskey=\"0\" />\n");
xmlprintf("<input type=\"submit\" value=\"Go\""
" id=\"search\" class=\"submit\" tabindex=\"2\" accesskey=\"1\" />\n");
xmlprintf("</div>\n");
xmlprintf("<div class=\"form_extension\">\n");
xmlprintf("<label for=\"words\" class=\"label\">highlighted words:</label>\n");
xmlprintf("<input type=\"text\" name=\"words\" value=\"\""
" size=\"48\" id=\"words\" class=\"text\" tabindex=\"3\" accesskey=\"2\" />\n");
xmlprintf("<label for=\"once\" class=\"label\">once:</label>\n");
xmlprintf("<input type=\"checkbox\" name=\"once\" value=\"1\" id=\"once\""
" class=\"checkbox\" tabindex=\"4\" accesskey=\"3\" />\n");
xmlprintf("</div>\n");
xmlprintf("</form>\n");
xmlprintf("</div>\n");
xmlprintf("</body>\n");
xmlprintf("</html>\n");
}
/* get the local path of a URL */
static char *urltopath(const char *url){
static char pbuf[URIBUFSIZ];
const char *pv, *elem;
char *wp, *dbuf;
CBLIST *list;
int i;
if(!cbstrfwimatch(url, "file://")) return NULL;
pv = url + 7;
if(!(url = strchr(pv, '/'))) return NULL;
wp = pbuf;
if(ESTPATHCHR == '\\'){
if(url[0] == '/' && ((url[1] >= 'A' && url[1] <= 'Z') || (url[1] >= 'a' && url[1] <= 'z')) &&
url[2] == '|' && url[3] == '/'){
wp += sprintf(wp, "%c:", url[1]);
url += 3;
} else if(url > pv){
wp += sprintf(wp, "\\\\");
memcpy(wp, pv, url - pv);
wp += url - pv;
}
}
list = cbsplit(url, -1, "/");
for(i = 0; i < cblistnum(list); i++){
elem = cblistval(list, i, NULL);
if(elem[0] == '\0') continue;
dbuf = cburldecode(elem, NULL);
wp += sprintf(wp, "%c%s", ESTPATHCHR, dbuf);
free(dbuf);
}
*wp = '\0';
cblistclose(list);
return cbmemdup(pbuf, -1);
}
/* get the connection of a URL */
static int getlocalconnection(const char *url, int *codep, CBMAP *heads){
const char *ext, *pv;
char *path;
int fd;
struct stat sbuf;
cbmapput(heads, "ERROR", -1, "", -1, TRUE);
cbmapput(heads, "", -1, "", -1, TRUE);
if(!(path = urltopath(url))){
*codep = 400;
cbmapput(heads, "ERROR", -1, "invalid URL", -1, TRUE);
return -1;
}
if(stat(path, &sbuf) == -1){
if(errno == EACCES){
*codep = 403;
cbmapput(heads, "ERROR", -1, "forbidden", -1, TRUE);
} else {
*codep = 404;
cbmapput(heads, "ERROR", -1, "file not found", -1, TRUE);
}
}
if(S_ISDIR(sbuf.st_mode)){
*codep = 0;
cbmapput(heads, "ERROR", -1, path, -1, TRUE);
free(path);
return -1;
}
if((fd = open(path, O_RDONLY, 0)) == -1){
if(errno == EACCES){
*codep = 403;
cbmapput(heads, "ERROR", -1, "forbidden", -1, TRUE);
} else {
*codep = 404;
cbmapput(heads, "ERROR", -1, "file not found", -1, TRUE);
}
free(path);
return -1;
}
*codep = 200;
ext = NULL;
if(!(pv = strrchr(url, ESTPATHCHR))) pv = url;
if((pv = strrchr(pv, ESTEXTCHR)) != NULL) ext = pv;
cbmapput(heads, "content-type", -1, est_ext_type(ext ? ext : ""), -1, TRUE);
free(path);
return fd;
}
/* send a list of files in a directory */
static void senddirlist(const char *path){
CBLIST *list;
const char *elem;
char *burl, *eurl, *nurl;
int i;
printf("Content-Type: text/html\n");
printf("\r\n");
xmlprintf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
xmlprintf("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\""
" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n");
xmlprintf("<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"%@\" lang=\"%p\">\n",
g_language, g_language);
xmlprintf("<head>\n");
xmlprintf("<meta http-equiv=\"Content-Type\" content=\"text/html\" />\n");
xmlprintf("<meta http-equiv=\"Content-Style-Type\" content=\"text/css\" />\n");
xmlprintf("<meta name=\"robots\" content=\"NOFOLLOW\" />\n");
xmlprintf("<link rel=\"contents\" href=\"./\" />\n");
xmlprintf("<title>%@/%@</title>\n", AGENTNAME, est_version);
xmlprintf("<style type=\"text/css\">html {\n");
xmlprintf(" margin: 0em 0em; padding: 0em 0em;\n");
xmlprintf(" background: #ffffff none;\n");
xmlprintf("}\n");
xmlprintf("body {\n");
xmlprintf(" margin: 2em 2em; padding: 0em 0em;\n");
xmlprintf(" color: #111111;\n");
xmlprintf("}\n");
xmlprintf("</style>\n");
xmlprintf("</head>\n");
xmlprintf("<body>\n");
xmlprintf("<h1>%@</h1>\n", path);
if((list = cbdirlist(path)) != NULL){
burl = cbsprintf("%s/", p_url);
cblistsort(list);
for(i = 0; i < cblistnum(list); i++){
elem = cblistval(list, i, NULL);
eurl = cburlencode(elem, -1);
nurl = cburlresolve(burl, elem);
if(p_once){
xmlprintf("<li><a href=\"%@\">%@</a></li>", nurl, elem);
} else {
xmlprintf("<li><a href=\"%s?url=%?\">%@</a></li>", g_scriptname, nurl, elem);
}
free(nurl);
free(eurl);
}
cblistclose(list);
free(burl);
} else {
xmlprintf("<p>The directory could not be opened.</p>\n");
}
xmlprintf("</body>\n");
xmlprintf("</html>\n");
}
/* read all data of a local connection */
static char *readall(int fd, int *sp){
CBDATUM *datum;
char iobuf[SOCKBUFSIZ];
int size;
datum = cbdatumopen(NULL, -1);
while(cbdatumsize(datum) < g_limitsize && (size = read(fd, iobuf, SOCKBUFSIZ)) > 0){
cbdatumcat(datum, iobuf, size);
}
return cbdatumtomalloc(datum, sp);
}
/* pass through raw data of a connection */
static void passlocalrawdata(int fd){
char iobuf[SOCKBUFSIZ];
int size;
while((size = read(fd, iobuf, SOCKBUFSIZ)) > 0){
fwrite(iobuf, 1, size, stdout);
}
}
/* send the data of local file */
static void sendlocaldata(void){
CBMAP *heads;
const char *kbuf, *vbuf, *cmd;
char *url, *type, *enc, *pv, *rbuf;
int fd, code, ksiz, rsiz;
url = replaceurl(p_url);
heads = cbmapopenex(MINIBNUM);
if((fd = getlocalconnection(url, &code, heads)) == -1){
if(code == 0){
senddirlist(cbmapget(heads, "ERROR", -1, NULL));
} else {
showerror(cbmapget(heads, "ERROR", -1, NULL));
}
cbmapclose(heads);
free(url);
return;
}
cbmapiterinit(g_urlrules);
while((kbuf = cbmapiternext(g_urlrules, &ksiz)) != NULL){
if(est_regex_match_str(kbuf, p_url)){
cbmapput(heads, "content-type", -1, cbmapget(g_urlrules, kbuf, ksiz, NULL), -1, TRUE);
break;
}
}
if(!(vbuf = cbmapget(heads, "content-type", -1, NULL))) vbuf = "text/plain";
type = cbmemdup(vbuf, -1);
if((pv = strchr(type, ';')) != NULL) *pv = '\0';
cbstrtolower(type);
enc = NULL;
if((pv = strstr(vbuf, "charset=")) != NULL || (pv = strstr(vbuf, "CHARSET=")) != NULL){
pv = strchr(pv, '=') + 1;
if(*pv == '"') pv++;
enc = cbmemdup(pv, -1);
if((pv = strchr(enc, '"')) != NULL) *pv = '\0';
}
cmd = "";
cbmapiterinit(g_mtrules);
while((kbuf = cbmapiternext(g_mtrules, &ksiz)) != NULL){
if(est_regex_match_str(kbuf, type)){
cmd = cbmapget(g_mtrules, kbuf, ksiz, NULL);
break;
}
}
printf("Status: %d\r\n", code);
cbmapout(heads, "", -1);
cbmapout(heads, "ERROR", -1);
if(*cmd != '\0'){
cbmapput(heads, "content-type", -1, "text/html; charset=UTF-8", -1, TRUE);
cbmapout(heads, "content-length", -1);
cbmapout(heads, "content-encoding", -1);
cbmapout(heads, "connection", -1);
cbmapout(heads, "set-cookie", -1);
cbmapout(heads, "set-cookie2", -1);
cbmapout(heads, "etag", -1);
cbmapout(heads, "transfer-encoding", -1);
}
modifylocation(heads, "location");
modifylocation(heads, "content-location");
cbmapiterinit(heads);
while((kbuf = cbmapiternext(heads, &ksiz)) != NULL){
printf("%s: %s\r\n", kbuf, cbmapget(heads, kbuf, ksiz, NULL));
}
printf("\r\n");
if(!strcmp(cmd, DRAFTCMD)){
rbuf = readall(fd, &rsiz);
sendpagefromdraft(rbuf, rsiz, enc);
free(rbuf);
} else if(!strcmp(cmd, TEXTCMD)){
rbuf = readall(fd, &rsiz);
sendpagefromtext(rbuf, rsiz, enc);
free(rbuf);
} else if(!strcmp(cmd, HTMLCMD)){
rbuf = readall(fd, &rsiz);
sendpagefromhtml(rbuf, rsiz, enc);
free(rbuf);
} else if(!strcmp(cmd, MIMECMD)){
rbuf = readall(fd, &rsiz);
sendpagefrommime(rbuf, rsiz, enc);
free(rbuf);
} else if(*cmd != '\0'){
rbuf = readall(fd, &rsiz);
sendpagewithxcmd(rbuf, rsiz, enc, cmd);
free(rbuf);
} else {
passlocalrawdata(fd);
}
free(enc);
free(type);
close(fd);
cbmapclose(heads);
free(url);
}
/* get the HTTP connection of a URL */
static int gethttpconnection(const char *url, int *codep, CBMAP *heads){
CBMAP *elems;
const char *scheme, *host, *pstr, *auth, *path, *query, *rp;
char *addr, iobuf[SOCKBUFSIZ], *wp, *tmp, name[SOCKBUFSIZ], *pv;
int pnum, sock, size, nsiz;
cbmapput(heads, "ERROR", -1, "", -1, TRUE);
cbmapput(heads, "", -1, "", -1, TRUE);
elems = cburlbreak(url);
scheme = cbmapget(elems, "scheme", -1, NULL);
host = cbmapget(elems, "host", -1, NULL);
pnum = (pstr = cbmapget(elems, "port", -1, NULL)) ? atoi(pstr) : 80;
auth = cbmapget(elems, "authority", -1, NULL);
path = cbmapget(elems, "path", -1, NULL);
query = cbmapget(elems, "query", -1, NULL);
if(!scheme || cbstricmp(scheme, "http") || !host || pnum < 1){
cbmapput(heads, "ERROR", -1, "invalid URL", -1, TRUE);
cbmapclose(elems);
return -1;
}
if(!auth) auth = "";
if(!path) path = "/";
if(!query) query = "";
if(!(addr = est_get_host_addr(host))){
cbmapput(heads, "ERROR", -1, "unknown host", -1, TRUE);
cbmapclose(elems);
return -1;
}
if((sock = est_get_client_sock(addr, pnum)) == -1){
cbmapput(heads, "ERROR", -1, "connection failed", -1, TRUE);
cbmapclose(elems);
return -1;
}
wp = iobuf;
wp += sprintf(wp, "GET %s%s%s HTTP/1.0\r\n", path, query[0] != '\0' ? "?" : "", query);
wp += sprintf(wp, "Host: %s:%d\r\n", host, pnum);
wp += sprintf(wp, "Connection: close\r\n");
if(auth[0] != '\0'){
tmp = cbbaseencode(auth, -1);
wp += sprintf(wp, "Authorization: Basic %s\r\n", tmp);
free(tmp);
}
wp += sprintf(wp, "User-Agent: %s\r\n", g_agentname);
if(g_passaddr) wp += sprintf(wp, "X-Forwarded-For: %s\r\n", g_remoteaddr);
switch(g_language){
case ESTLANGEN:
wp += sprintf(wp, "Accept-Language: en,ja\r\n");
break;
case ESTLANGJA:
wp += sprintf(wp, "Accept-Language: ja,en\r\n");
break;
case ESTLANGZH:
wp += sprintf(wp, "Accept-Language: zh,en\r\n");
break;
case ESTLANGKO:
wp += sprintf(wp, "Accept-Language: ko,en\r\n");
break;
}
wp += sprintf(wp, "\r\n");
est_sock_send_all(sock, iobuf, wp - iobuf);
if((size = est_sock_recv_line(sock, iobuf, SOCKBUFSIZ - 1)) < 1 ||
!cbstrfwmatch(iobuf, "HTTP/") || !(rp = strchr(iobuf, ' '))){
cbmapput(heads, "ERROR", -1, "no data received", -1, TRUE);
est_sock_down(sock);
cbmapclose(elems);
return -1;
}
*codep = atoi(rp);
cbmapput(heads, "", 0, iobuf, size, TRUE);
name[0] = '\0';
nsiz = 0;
while((size = est_sock_recv_line(sock, iobuf, SOCKBUFSIZ - 1)) > 0){
if(iobuf[0] == ' ' || iobuf[0] == '\t'){
if(name[0] != '\0'){
iobuf[0] = ' ';
cbmapputcat(heads, name, nsiz, iobuf, size);
}
} else if((rp = strchr(iobuf, ':')) > iobuf){
nsiz = rp - iobuf;
memcpy(name, iobuf, nsiz);
name[nsiz] = '\0';
for(pv = name; *pv != '\0'; pv++){
if(*pv >= 'A'&& *pv <= 'Z') *pv = *pv + ('a' - 'A');
}
rp++;
if(*rp == ' ' || *rp == '\t') rp++;
if(cbmapget(heads, name, nsiz, NULL)){
cbmapputcat(heads, name, nsiz, ", ", 2);
cbmapputcat(heads, name, nsiz, pv, -1);
} else {
cbmapput(heads, name, nsiz, rp, -1, TRUE);
}
}
}
cbmapclose(elems);
return sock;
}
/* receive all data of a networdk connection */
static char *recvall(int sock, int *sp){
CBDATUM *datum;
char iobuf[SOCKBUFSIZ];
int size;
datum = cbdatumopen(NULL, -1);
while(cbdatumsize(datum) < g_limitsize && (size = recv(sock, iobuf, SOCKBUFSIZ, 0)) > 0){
cbdatumcat(datum, iobuf, size);
}
return cbdatumtomalloc(datum, sp);
}
/* pass through raw data of a connection */
static void passhttprawdata(int sock){
char iobuf[SOCKBUFSIZ];
int size;
while((size = recv(sock, iobuf, SOCKBUFSIZ, 0)) > 0){
fwrite(iobuf, 1, size, stdout);
}
}
/* modify a header of location */
static void modifylocation(CBMAP *heads, const char *name){
CBDATUM *datum;
const char *url;
char *nurl;
int i;
if(!(url = cbmapget(heads, name, -1, NULL))) return;
nurl = cburlresolve(p_url, url);
datum = cbdatumopen(NULL, -1);
cbdatumprintf(datum, "http://%s%s?url=%?&once=%d", g_hostname, g_scriptpath, nurl, p_once);
for(i = 0; i < cblistnum(p_words); i++){
cbdatumprintf(datum, "&word%d=%?", i + 1, cblistval(p_words, i, NULL));
}
cbmapput(heads, name, -1, cbdatumptr(datum), cbdatumsize(datum), TRUE);
cbdatumclose(datum);
free(nurl);
}
/* send the data of HTTP connection */
static void sendhttpdata(void){
CBMAP *heads;
const char *kbuf, *vbuf, *cmd;
char *url, *type, *enc, *pv, *rbuf;
int sock, code, ksiz, rsiz;
url = replaceurl(p_url);
heads = cbmapopenex(MINIBNUM);
if((sock = gethttpconnection(url, &code, heads)) == -1){
showerror(cbmapget(heads, "ERROR", -1, NULL));
cbmapclose(heads);
free(url);
return;
}
cbmapiterinit(g_urlrules);
while((kbuf = cbmapiternext(g_urlrules, &ksiz)) != NULL){
if(est_regex_match_str(kbuf, p_url)){
cbmapput(heads, "content-type", -1, cbmapget(g_urlrules, kbuf, ksiz, NULL), -1, TRUE);
break;
}
}
if(!(vbuf = cbmapget(heads, "content-type", -1, NULL))) vbuf = "text/plain";
type = cbmemdup(vbuf, -1);
if((pv = strchr(type, ';')) != NULL) *pv = '\0';
cbstrtolower(type);
enc = NULL;
if((pv = strstr(vbuf, "charset=")) != NULL || (pv = strstr(vbuf, "CHARSET=")) != NULL){
pv = strchr(pv, '=') + 1;
if(*pv == '"') pv++;
enc = cbmemdup(pv, -1);
if((pv = strchr(enc, '"')) != NULL) *pv = '\0';
}
cmd = "";
cbmapiterinit(g_mtrules);
while((kbuf = cbmapiternext(g_mtrules, &ksiz)) != NULL){
if(est_regex_match_str(kbuf, type)){
cmd = cbmapget(g_mtrules, kbuf, ksiz, NULL);
break;
}
}
printf("Status: %d\r\n", code);
cbmapout(heads, "", -1);
cbmapout(heads, "ERROR", -1);
if(*cmd != '\0'){
cbmapput(heads, "content-type", -1, "text/html; charset=UTF-8", -1, TRUE);
cbmapout(heads, "content-length", -1);
cbmapout(heads, "content-encoding", -1);
cbmapout(heads, "connection", -1);
cbmapout(heads, "set-cookie", -1);
cbmapout(heads, "set-cookie2", -1);
cbmapout(heads, "etag", -1);
cbmapout(heads, "transfer-encoding", -1);
}
modifylocation(heads, "location");
modifylocation(heads, "content-location");
cbmapiterinit(heads);