/*
* $Id$
- *
- * Output an HTML message, modifying it slightly to make sure it plays nice
+ */
+/**
+ * \defgroup HTML2HTML Output an HTML message, modifying it slightly to make sure it plays nice
* with the rest of our web framework.
*
*/
-
-#include <ctype.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/socket.h>
-#include <limits.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <string.h>
-#include <pwd.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <pthread.h>
-#include <signal.h>
+/*@{*/
#include "webcit.h"
#include "vcard.h"
#include "webserver.h"
-/*
+/**
+ * \brief Sanitize and enhance an HTML message for display.
+ * Also convert weird character sets to UTF-8 if necessary.
+ * \param charset the input charset
*/
-void output_html(void) {
+void output_html(char *charset) {
char buf[SIZ];
char *msg;
char *ptr;
char *msgstart;
char *msgend;
- int total_length = 1;
+ char *converted_msg;
+ int buffer_length = 1;
int line_length = 0;
+ int content_length = 0;
+ int output_length = 0;
+ char new_window[SIZ];
+ int brak = 0;
+ int alevel = 0;
+ int i;
+ int linklen;
+#ifdef HAVE_ICONV
+ iconv_t ic = (iconv_t)(-1) ;
+ char *ibuf; /**< Buffer of characters to be converted */
+ char *obuf; /**< Buffer for converted characters */
+ size_t ibuflen; /**< Length of input buffer */
+ size_t obuflen; /**< Length of output buffer */
+ char *osav; /**< Saved pointer to output buffer */
+#endif
msg = strdup("");
- msgstart = msg;
- msgend = msg;
+ sprintf(new_window, "<a target=\"%s\" href=", TARGET);
- while (serv_gets(buf), strcmp(buf, "000")) {
+ while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
line_length = strlen(buf);
- total_length = total_length + line_length + 1;
- msg = realloc(msg, total_length + 1);
- strcpy(msgend, buf);
- msgend[line_length++] = '\n' ;
- msgend[line_length] = 0;
- msgend = &msgend[line_length];
+ buffer_length = content_length + line_length + 2;
+ msg = realloc(msg, buffer_length);
+ if (msg == NULL) {
+ wprintf("<b>");
+ wprintf(_("realloc() error! couldn't get %d bytes: %s"),
+ buffer_length + 1,
+ strerror(errno));
+ wprintf("</b><br /><br />\n");
+ return;
+ }
+ strcpy(&msg[content_length], buf);
+ content_length += line_length;
+ strcpy(&msg[content_length], "\n");
+ content_length += 1;
+ }
+
+#ifdef HAVE_ICONV
+ if ( (strcasecmp(charset, "us-ascii"))
+ && (strcasecmp(charset, "UTF-8"))
+ && (strcasecmp(charset, ""))
+ ) {
+ ic = iconv_open("UTF-8", charset);
+ if (ic == (iconv_t)(-1) ) {
+ lprintf(5, "%s:%d iconv_open() failed: %s\n",
+ __FILE__, __LINE__, strerror(errno));
+ }
+ }
+ if (ic != (iconv_t)(-1) ) {
+ ibuf = msg;
+ ibuflen = content_length;
+ obuflen = content_length + (content_length / 2) ;
+ obuf = (char *) malloc(obuflen);
+ osav = obuf;
+ iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
+ content_length = content_length + (content_length / 2) - obuflen;
+ osav[content_length] = 0;
+ free(msg);
+ msg = osav;
+ iconv_close(ic);
}
+#endif
ptr = msg;
msgstart = msg;
- /* msgend is already set correctly */
+ msgend = &msg[content_length];
while (ptr < msgend) {
- /* Advance to next tag */
+ /** Advance to next tag */
ptr = strchr(ptr, '<');
+ if ((ptr == NULL) || (ptr >= msgend)) break;
++ptr;
if ((ptr == NULL) || (ptr >= msgend)) break;
- /* Any of these tags cause everything up to and including
+ /**
+ * Any of these tags cause everything up to and including
* the tag to be removed.
*/
if ( (!strncasecmp(ptr, "HTML", 4))
msgstart = ptr;
}
- /* Any of these tags cause everything including and following
+ /**
+ * Any of these tags cause everything including and following
* the tag to be removed.
*/
if ( (!strncasecmp(ptr, "/HTML", 5))
++ptr;
}
- write(WC->http_sock, msgstart, strlen(msgstart));
+ converted_msg = malloc(content_length);
+ strcpy(converted_msg, "");
+ ptr = msgstart;
+ while (ptr < msgend) {
+ /**
+ * Change mailto: links to WebCit mail, by replacing the
+ * link with one that points back to our mail room. Due to
+ * the way we parse URL's, it'll even handle mailto: links
+ * that have "?subject=" in them.
+ */
+ if (!strncasecmp(ptr, "<a href=\"mailto:", 16)) {
+ content_length += 64;
+ converted_msg = realloc(converted_msg, content_length);
+ sprintf(&converted_msg[output_length],
+ "<a href=\"display_enter"
+ "?force_room=_MAIL_&recp=");
+ output_length += 47;
+ ptr = &ptr[16];
+ ++alevel;
+ }
+ /** Make links open in a separate window */
+ else if (!strncasecmp(ptr, "<a href=", 8)) {
+ content_length += 64;
+ converted_msg = realloc(converted_msg, content_length);
+ sprintf(&converted_msg[output_length], new_window);
+ output_length += strlen(new_window);
+ ptr = &ptr[8];
+ ++alevel;
+ }
+ /**
+ * Turn anything that looks like a URL into a real link, as long
+ * as it's not inside a tag already
+ */
+ else if ( (brak == 0) && (alevel == 0)
+ && (!strncasecmp(ptr, "http://", 7))) {
+ linklen = 0;
+ /** Find the end of the link */
+ for (i=0; i<=strlen(ptr); ++i) {
+ if ((ptr[i]==0)
+ ||(isspace(ptr[i]))
+ ||(ptr[i]==10)
+ ||(ptr[i]==13)
+ ||(ptr[i]=='(')
+ ||(ptr[i]==')')
+ ||(ptr[i]=='<')
+ ||(ptr[i]=='>')
+ ||(ptr[i]=='[')
+ ||(ptr[i]==']')
+ ) linklen = i;
+ if (linklen > 0) break;
+ }
+ if (linklen > 0) {
+ content_length += (32 + linklen);
+ converted_msg = realloc(converted_msg, content_length);
+ sprintf(&converted_msg[output_length], new_window);
+ output_length += strlen(new_window);
+ converted_msg[output_length] = '\"';
+ converted_msg[++output_length] = 0;
+ for (i=0; i<linklen; ++i) {
+ converted_msg[output_length] = ptr[i];
+ converted_msg[++output_length] = 0;
+ }
+ sprintf(&converted_msg[output_length], "\">");
+ output_length += 2;
+ for (i=0; i<linklen; ++i) {
+ converted_msg[output_length] = *ptr++;
+ converted_msg[++output_length] = 0;
+ }
+ sprintf(&converted_msg[output_length], "</A>");
+ output_length += 4;
+ }
+ }
+ else {
+ /**
+ * We need to know when we're inside a tag,
+ * so we don't turn things that look like URL's into
+ * links, when they're already links - or image sources.
+ */
+ if (*ptr == '<') ++brak;
+ if (*ptr == '>') --brak;
+ if (!strncasecmp(ptr, "</A>", 3)) --alevel;
+ converted_msg[output_length] = *ptr++;
+ converted_msg[++output_length] = 0;
+ }
+ }
+
+ /** Output our big pile of markup */
+ client_write(converted_msg, output_length);
- /* A little trailing vertical whitespace... */
- wprintf("<BR><BR>\n");
+ /** A little trailing vertical whitespace... */
+ wprintf("<br /><br />\n");
- /* Now give back the memory */
+ /** Now give back the memory */
+ free(converted_msg);
free(msg);
}
+/*@}*/
projects / citadel.git / blobdiff