* This is the actual program called by the webserver. It maintains a
* persistent session to the Citadel server, handling HTTP WebCit requests as
* they arrive and presenting a user interface.
+ *
+ * $Id$
*/
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
+#include <sys/stat.h>
+#include <stdarg.h>
+#include "webcit.h"
+#include "child.h"
int wc_session;
char wc_host[256];
-int wc_port;
+char wc_port[256];
char wc_username[256];
char wc_password[256];
char wc_roomname[256];
+int TransactionCount = 0;
+int connected = 0;
+int logged_in = 0;
+int axlevel;
+
+struct webcontent *wlist = NULL;
+struct webcontent *wlast = NULL;
+
+struct urlcontent *urlstrings = NULL;
+
+
+void unescape_input(char *buf)
+{
+ int a,b;
+ char hex[3];
+
+ while ((isspace(buf[strlen(buf)-1]))&&(strlen(buf)>0))
+ buf[strlen(buf)-1] = 0;
+
+ for (a=0; a<strlen(buf); ++a) {
+ if (buf[a]=='+') buf[a]=' ';
+ if (buf[a]=='%') {
+ hex[0]=buf[a+1];
+ hex[1]=buf[a+2];
+ hex[2]=0;
+ sscanf(hex,"%02x",&b);
+ buf[a] = (char) b;
+ strcpy(&buf[a+1],&buf[a+3]);
+ }
+ }
+
+ }
+
+
+void addurls(char *url) {
+ char *up, *ptr;
+ char buf[256];
+ int a,b;
+ struct urlcontent *u;
+
+ up = url;
+ while (strlen(up)>0) {
+
+ /* locate the = sign */
+ strncpy(buf,up,255);
+ b = (-1);
+ for (a=255; a>=0; --a) if (buf[a]=='=') b=a;
+ if (b<0) return;
+ buf[b]=0;
+
+ u = (struct urlcontent *)malloc(sizeof(struct urlcontent));
+ u->next = urlstrings;
+ urlstrings = u;
+ strcpy(u->url_key, buf);
+
+ /* now chop that part off */
+ for (a=0; a<=b; ++a) ++up;
+
+ /* locate the & sign */
+ ptr = up;
+ b = strlen(up);
+ for (a=0; a<strlen(up); ++a) {
+ if (!strncmp(ptr,"&",1)) {
+ b=a;
+ break;
+ }
+ ++ptr;
+ }
+ ptr = up;
+ for (a=0; a<b; ++a) ++ptr;
+ strcpy(ptr,"");
+
+ u->url_data = malloc(strlen(up));
+ strcpy(u->url_data, up);
+ unescape_input(u->url_data);
+
+ up = ptr;
+ ++up;
+ }
+ }
+
+void free_urls(void) {
+ struct urlcontent *u;
+
+ while (urlstrings != NULL) {
+ free(urlstrings->url_data);
+ u = urlstrings->next;
+ free(urlstrings);
+ urlstrings = u;
+ }
+ }
+
+char *bstr(char *key) {
+ struct urlcontent *u;
+
+ for (u = urlstrings; u != NULL; u = u->next) {
+ if (!strcasecmp(u->url_key, key)) return(u->url_data);
+ }
+ return("");
+ }
+
+
+void wprintf(const char *format, ...) {
+ va_list arg_ptr;
+ struct webcontent *wptr;
+
+ wptr = (struct webcontent *)malloc(sizeof(struct webcontent));
+ wptr->next = NULL;
+ if (wlist == NULL) {
+ wlist = wptr;
+ wlast = wptr;
+ }
+ else {
+ wlast->next = wptr;
+ wlast = wptr;
+ }
+
+ va_start(arg_ptr, format);
+ vsprintf(wptr->w_data, format, arg_ptr);
+ va_end(arg_ptr);
+
+ }
+
+int wContentLength(void) {
+ struct webcontent *wptr;
+ int len = 0;
+
+ for (wptr = wlist; wptr != NULL; wptr = wptr->next) {
+ len = len + strlen(wptr->w_data);
+ }
+
+ return(len);
+ }
+
+void wDumpContent(void) {
+ struct webcontent *wptr;
+
+ printf("Content-type: text/html\n");
+ printf("Content-length: %d\n", wContentLength());
+ printf("\n");
+
+ while (wlist != NULL) {
+ fwrite(wlist->w_data, strlen(wlist->w_data), 1, stdout);
+ wptr = wlist->next;
+ free(wlist);
+ wlist = wptr;
+ }
+ wlast = NULL;
+ }
+
+
+void escputs1(char *strbuf, int nbsp)
+{
+ int a;
+
+ for (a=0; a<strlen(strbuf); ++a) {
+ if (strbuf[a]=='<') wprintf("<");
+ else if (strbuf[a]=='>') wprintf(">");
+ else if (strbuf[a]=='&') wprintf("&");
+ else if (strbuf[a]==34) wprintf(""");
+ else if (strbuf[a]==LB) wprintf("<");
+ else if (strbuf[a]==RB) wprintf(">");
+ else if (strbuf[a]==QU) wprintf("\"");
+ else if ((strbuf[a]==32)&&(nbsp==1)) {
+ wprintf(" ");
+ }
+ else {
+ wprintf("%c", strbuf[a]);
+ }
+ }
+ }
+
+void escputs(char *strbuf)
+{
+ escputs1(strbuf,0);
+ }
+
+
+
+char *urlesc(char *strbuf)
+{
+ int a,b,c;
+ char *ec = " #&;`'|*?-~<>^()[]{}$\\";
+ static char outbuf[512];
+
+ strcpy(outbuf,"");
+
+ for (a=0; a<strlen(strbuf); ++a) {
+ c = 0;
+ for (b=0; b<strlen(ec); ++b) {
+ if (strbuf[a]==ec[b]) c=1;
+ }
+ b = strlen(outbuf);
+ if (c==1) sprintf(&outbuf[b],"%%%02x",strbuf[a]);
+ else sprintf(&outbuf[b],"%c",strbuf[a]);
+ }
+ return(outbuf);
+ }
+
+void urlescputs(char *strbuf)
+{
+ wprintf("%s",urlesc(strbuf));
+ }
+
+
+/*
+ * Look for URL's embedded in a buffer and make them linkable. We use a
+ * target window in order to keep the BBS session in its own window.
+ */
+void url(char *buf)
+{
+
+ int pos;
+ int start,end;
+ char ench;
+ char urlbuf[256];
+ char outbuf[256];
+
+ start = (-1);
+ end = strlen(buf);
+ ench = 0;
+
+ for (pos=0; pos<strlen(buf); ++pos) {
+ if (!strncasecmp(&buf[pos],"http://",7)) start = pos;
+ if (!strncasecmp(&buf[pos],"ftp://",6)) start = pos;
+ }
+
+ if (start<0) return;
+
+ if ((start>0)&&(buf[start-1]=='<')) ench = '>';
+ if ((start>0)&&(buf[start-1]=='[')) ench = ']';
+ if ((start>0)&&(buf[start-1]=='(')) ench = ')';
+ if ((start>0)&&(buf[start-1]=='{')) ench = '}';
+
+ for (pos=strlen(buf); pos>start; --pos) {
+ if ((buf[pos]==' ')||(buf[pos]==ench)) end = pos;
+ }
+
+ strncpy(urlbuf,&buf[start],end-start);
+ urlbuf[end-start] = 0;
+
+
+ strncpy(outbuf,buf,start);
+ sprintf(&outbuf[start],"%cA HREF=%c%s%c TARGET=%c%s%c%c%s%c/A%c",
+ LB,QU,urlbuf,QU,QU,TARGET,QU,RB,urlbuf,LB,RB);
+ strcat(outbuf,&buf[end]);
+ strcpy(buf,outbuf);
+ }
+
+
+
void getz(char *buf) {
if (fgets(buf, 256, stdin) == NULL) strcpy(buf, "");
}
}
-void output_reconnect_cookies() {
+/*
+ * Output all that important stuff that the browser will want to see
+ */
+void output_headers(void) {
+ printf("Server: %s\n", SERVER);
+ printf("Connection: close\n");
printf("Set-cookie: wc_session=%d\n", wc_session);
if (strlen(wc_host)>0) printf("Set-cookie: wc_host=%s\n", wc_host);
- if (wc_port != 0) printf("Set-cookie: wc_port=%d\n", wc_port);
+ if (strlen(wc_port)>0) printf("Set-cookie: wc_port=%s\n", wc_port);
if (strlen(wc_username)>0) printf("Set-cookie: wc_username=%s\n",
wc_username);
if (strlen(wc_password)>0) printf("Set-cookie: wc_password=%s\n",
void output_static(char *what) {
char buf[256];
FILE *fp;
+ struct stat statbuf;
+ off_t bytes;
sprintf(buf, "static/%s", what);
fp = fopen(buf, "rb");
if (fp == NULL) {
printf("HTTP/1.0 404 %s\n", strerror(errno));
- printf("Server: WebCit v2 (Velma)\n");
- printf("Connection: close\n");
- output_reconnect_cookies();
+ output_headers();
printf("Content-Type: text/plain\n");
sprintf(buf, "%s: %s\n", what, strerror(errno));
printf("Content-length: %d\n", strlen(buf));
}
else {
printf("HTTP/1.0 200 OK\n");
- printf("Server: WebCit v2 (Velma)\n");
- printf("Connection: close\n");
- output_reconnect_cookies();
- printf("Content-Type: text/plain\n");
- printf("Content-length: 11\n");
+ output_headers();
+
+ if (!strncasecmp(&what[strlen(what)-4], ".gif", 4))
+ printf("Content-type: image/gif\n");
+ else if (!strncasecmp(&what[strlen(what)-5], ".html", 5))
+ printf("Content-type: text/html\n");
+ else
+ printf("Content-type: application/octet-stream\n");
+
+ fstat(fileno(fp), &statbuf);
+ bytes = statbuf.st_size;
+ printf("Content-length: %ld\n", (long)bytes);
printf("\n");
- printf("Hi from IG\n");
+ while (bytes--) {
+ putc(getc(fp), stdout);
+ }
fclose(fp);
}
}
+static const char *defaulthost = DEFAULT_HOST;
+static const char *defaultport = DEFAULT_PORT;
-void session_loop() {
+void session_loop(void) {
char cmd[256];
char buf[256];
- char content[4096];
- static int TransactionCount = 0;
- int a;
+ int a, b;
+ int ContentLength = 0;
+ char *content;
+
+ /* We stuff these with the values coming from the client cookies,
+ * so we can use them to reconnect a timed out session if we have to.
+ */
+ char c_host[256];
+ char c_port[256];
+ char c_username[256];
+ char c_password[256];
+ char c_roomname[256];
+
+ strcpy(c_host, defaulthost);
+ strcpy(c_port, defaultport);
+ strcpy(c_username, "");
+ strcpy(c_password, "");
+ strcpy(c_roomname, "");
getz(cmd);
+
do {
getz(buf);
+
+ if (!strncasecmp(buf, "Cookie: wc_host=", 16))
+ strcpy(c_host, &buf[16]);
+ if (!strncasecmp(buf, "Cookie: wc_port=", 16))
+ strcpy(c_port, &buf[16]);
+ if (!strncasecmp(buf, "Cookie: wc_username=", 20))
+ strcpy(c_username, &buf[20]);
+ if (!strncasecmp(buf, "Cookie: wc_password=", 20))
+ strcpy(c_password, &buf[20]);
+ if (!strncasecmp(buf, "Cookie: wc_roomname=", 20))
+ strcpy(c_roomname, &buf[20]);
+
+ if (!strncasecmp(buf, "Content-length: ", 16)) {
+ ContentLength = atoi(&buf[16]);
+ }
+
} while(strlen(buf)>0);
- fprintf(stderr, "Command: %s\n", cmd);
- fflush(stderr);
+ ++TransactionCount;
+
+ if (ContentLength > 0) {
+ content = malloc(ContentLength+1);
+ fread(content, ContentLength, 1, stdin);
+ content[ContentLength] = 0;
+ addurls(content);
+ }
+ else {
+ content = NULL;
+ }
+
+ /*
+ * If we're not connected to a Citadel server, try to hook up the
+ * connection now. Preference is given to the host and port specified
+ * by browser cookies, if cookies have been supplied.
+ */
+ if (!connected) {
+ serv_sock = connectsock(c_host, c_port, "tcp");
+ connected = 1;
+ serv_gets(buf); /* get the server welcome message */
+ strcpy(wc_host, c_host);
+ strcpy(wc_port, c_port);
+ get_serv_info();
+ }
+
+
+ /*
+ * If we're not logged in, but we have username and password cookies
+ * supplied by the browser, try using them to log in.
+ */
+ if ((!logged_in)&&(strlen(c_username)>0)&&(strlen(c_password)>0)) {
+ serv_printf("USER %s", c_username);
+ serv_gets(buf);
+ if (buf[0]=='3') {
+ serv_printf("PASS %s", c_password);
+ serv_gets(buf);
+ if (buf[0]=='2') {
+ become_logged_in(c_username, c_password, buf);
+ }
+ }
+ }
+
+ /*
+ * If we don't have a current room, but a cookie specifying the
+ * current room is supplied, make an effort to go there.
+ */
+ if ((strlen(wc_roomname)==0) && (strlen(c_roomname)>0) ) {
+ serv_printf("GOTO %s", c_roomname);
+ serv_gets(buf);
+ if (buf[0]=='2') {
+ strcpy(wc_roomname, c_roomname);
+ }
+ }
+
+ /* If there are variables in the URL, we must grab them now */
+ for (a=0; a<strlen(cmd); ++a) if (cmd[a]=='?') {
+ for (b=a; b<strlen(cmd); ++b) if (isspace(cmd[b])) cmd[b]=0;
+ addurls(&cmd[a+1]);
+ cmd[a] = 0;
+ }
if (!strncasecmp(cmd, "GET /static/", 12)) {
strcpy(buf, &cmd[12]);
output_static(buf);
}
+
+ else if ((!logged_in)&&(!strncasecmp(cmd, "POST /login", 11))) {
+ do_login();
+ }
+
+ else if (!logged_in) {
+ display_login();
+ }
+
+ /* Various commands... */
+
+ else if (!strncasecmp(cmd, "GET /do_welcome", 15)) {
+ do_welcome();
+ }
+
+ else if (!strncasecmp(cmd, "GET /display_main_menu", 22)) {
+ display_main_menu();
+ }
+
+ else if (!strncasecmp(cmd, "GET /advanced", 13)) {
+ display_advanced_menu();
+ }
+
+ else if (!strncasecmp(cmd, "GET /whobbs", 11)) {
+ whobbs();
+ }
+
+ else if (!strncasecmp(cmd, "GET /knrooms", 12)) {
+ list_all_rooms_by_floor();
+ }
+
+ else if (!strncasecmp(cmd, "GET /gotonext", 13)) {
+ slrp_highest();
+ gotonext();
+ }
+
+ else if (!strncasecmp(cmd, "GET /skip", 9)) {
+ gotonext();
+ }
+
+ else if (!strncasecmp(cmd, "GET /ungoto", 11)) {
+ ungoto();
+ }
+
+ else if (!strncasecmp(cmd, "GET /dotgoto", 12)) {
+ slrp_highest();
+ dotgoto();
+ }
+
+ else if (!strncasecmp(cmd, "GET /termquit", 13)) {
+ do_logout();
+ }
+
+ /* When all else fails... */
else {
printf("HTTP/1.0 200 OK\n");
- printf("Server: WebCit v2 (Velma)\n");
- printf("Connection: close\n");
- output_reconnect_cookies();
- printf("Content-Type: text/html\n");
-
- strcpy(content, "");
-
- sprintf(&content[strlen(content)],
- "<HTML><HEAD><TITLE>WebCit</TITLE></HEAD><BODY>\n");
- sprintf(&content[strlen(content)],
- "TransactionCount is %d<HR>\n", ++TransactionCount);
- sprintf(&content[strlen(content)],
- "You're in session %d<BR>\n", wc_session);
- sprintf(&content[strlen(content)],
- "</BODY></HTML>\n");
+ output_headers();
- printf("Content-length: %d\n", strlen(content));
- printf("\n");
- fwrite(content, strlen(content), 1, stdout);
+ wprintf("<HTML><HEAD><TITLE>WebCit</TITLE></HEAD><BODY>\n");
+ wprintf("TransactionCount is %d<HR>\n", TransactionCount);
+ wprintf("You're in session %d<BR>\n", wc_session);
+ wprintf("</BODY></HTML>\n");
+ wDumpContent();
}
fflush(stdout);
+ if (content != NULL) {
+ free(content);
+ content = NULL;
+ }
+ free_urls();
}
-
-
int main(int argc, char *argv[]) {
- if (argc != 2) {
- printf("%s: usage: %s <session_id>\n", argv[0], argv[0]);
- exit(1);
+ if (argc < 2 || argc > 4) {
+ fprintf(stderr,
+ "webcit: usage: webcit <session_id> [host [port]]\n");
+ return 1;
}
wc_session = atoi(argv[1]);
+
+ if (argc > 2) {
+ defaulthost = argv[2];
+ if (argc > 3)
+ defaultport = argv[3];
+ }
+
strcpy(wc_host, "");
- wc_port = 0;
+ strcpy(wc_port, "");
strcpy(wc_username, "");
strcpy(wc_password, "");
strcpy(wc_roomname, "");
while (1) {
session_loop();
}
-
- exit(0);
}
projects / citadel.git / blobdiff