/*
* Wrapper for exec_ok(), confirming with user if the link text is not visible
* in the status line.
*/
static BOOL can_exec_cgi(const char *linktext, const char *linkargs)
{
const char *format = gettext("Do you want to execute \"%s\"?");
char *message = NULL;
char *command = NULL;
char *p;
BOOL result = TRUE;
if (!exec_ok(HTLoadedDocumentURL(), linktext, CGI_PATH)) {
/* exec_ok gives out msg. */
result = FALSE;
} else {
StrAllocCopy(command, linktext);
if (non_empty(linkargs)) {
HTSprintf(&command, " %s", linkargs);
}
HTUnEscape(command);
for (p = command; *p; ++p)
if (*p == '+')
*p = ' ';
HTSprintf0(&message, format, command);
result = HTConfirm(message);
FREE(message);
FREE(command);
}
return result;
}
/*
** reply_by_mail() invokes sendmail on Unix or mail on VMS to send
** a comment from the users to the owner
*/
PUBLIC void reply_by_mail ARGS4(
char *, mail_address,
char *, filename,
CONST char *, title,
CONST char *, refid)
{
#ifndef NO_ANONYMOUS_EMAIL
static char *personal_name = NULL;
#endif
char user_input[LINESIZE];
FILE *fd, *fp;
char *label = NULL;
char *from_address = NULL;
char *cc_address = NULL;
char *to_address = NULL;
char *the_subject = NULL;
char *ccaddr = NULL;
char *keywords = NULL;
char *searchpart = NULL;
char *body = NULL;
char *cp = NULL, *cp1 = NULL;
int i;
int c = 0; /* user input */
char my_tmpfile[LY_MAXPATH];
char default_subject[MAX_SUBJECT + 10];
#if USE_VMS_MAILER
char *command = NULL;
BOOLEAN isPMDF = LYMailPMDF();
char hdrfile[LY_MAXPATH];
FILE *hfd = 0;
#else
#if !CAN_PIPE_TO_MAILER
char tmpfile2[LY_MAXPATH];
#endif
char buf[4096]; /* 512 */
char *header = NULL;
int n;
#endif /* USE_VMS_MAILER */
CTRACE((tfp, "reply_by_mail(\"%s\", \"%s\", \"%s\", \"%s\")\n",
NONNULL(mail_address),
NONNULL(filename),
NONNULL(title),
NONNULL(refid)));
term_letter = FALSE;
if (!LYSystemMail())
return;
if (isEmpty(mail_address)) {
HTAlert(NO_ADDRESS_IN_MAILTO_URL);
return;
}
StrAllocCopy(to_address, mail_address);
if ((fd = LYOpenTemp(my_tmpfile, ".txt", "w")) == NULL) {
HTAlert(MAILTO_URL_TEMPOPEN_FAILED);
return;
}
#if USE_VMS_MAILER
if (isPMDF) {
if ((hfd = LYOpenTemp(hdrfile, ".txt", "w")) == NULL) {
HTAlert(MAILTO_URL_TEMPOPEN_FAILED);
return;
}
}
#endif /* VMS */
default_subject[0] = '\0';
/*
* Check for a ?searchpart. - FM
*/
if ((cp = strchr(to_address, '?')) != NULL) {
StrAllocCopy(searchpart, cp);
*cp = '\0';
cp = (searchpart + 1);
if (*cp != '\0') {
/*
* Seek and handle a subject=foo. - FM
*/
extract_subject(default_subject, searchpart);
/*
* Seek and handle to=address(es) fields.
* Appends to address. - FM
*/
extract_field(&to_address, searchpart, "to=");
/*
* Seek and handle cc=address(es) fields. Excludes
* Bcc=address(es) as unsafe. We may append our own
* cc (below) as a list for the actual mailing. - FM
*/
extract_field(&ccaddr, searchpart, "cc=");
/*
* Seek and handle keywords=term(s) fields. - FM
*/
extract_field(&keywords, searchpart, "keywords=");
if (keywords != NULL) {
if (*keywords != '\0') {
SafeHTUnEscape(keywords);
} else {
FREE(keywords);
}
}
/*
* Seek and handle body=foo fields. - FM
*/
extract_body(&body, searchpart);
FREE(searchpart);
}
}
if (convert_explorer(to_address)) {
HTAlert(NO_ADDRESS_IN_MAILTO_URL);
goto cancelled;
}
if (ccaddr != NULL) {
if (convert_explorer(ccaddr)) {
FREE(ccaddr);
}
}
/*
* Unescape the address and ccaddr fields. - FM
*/
SafeHTUnEscape(to_address);
if (ccaddr != NULL) {
SafeHTUnEscape(ccaddr);
}
/*
* Set the default subject. - FM
*/
if (isEmpty(default_subject) && !isEmpty(title)) {
strncpy(default_subject, title, MAX_SUBJECT);
default_subject[MAX_SUBJECT] = '\0';
}
/*
* Use ^G to cancel mailing of comment
* and don't let SIGINTs exit lynx.
*/
signal(SIGINT, terminate_letter);
#if USE_VMS_MAILER
if (isPMDF || !body) {
/*
* Put the X-URL and X-Mailer lines in the hdrfile
* for PMDF or my_tmpfile for VMS MAIL. - FM
*/
fprintf((isPMDF ? hfd : fd),
"X-URL: %s%s\n",
isEmpty(filename) ? STR_MAILTO_URL : filename,
isEmpty(filename) ? to_address : "");
fprintf((isPMDF ? hfd : fd),
"X-Mailer: %s, Version %s\n", LYNX_NAME, LYNX_VERSION);
#ifdef NO_ANONYMOUS_EMAIL
if (!isPMDF) {
fprintf(fd, "\n");
}
#endif /* NO_ANONYMOUS_EMAIL */
}
#else /* Unix/DOS/Windows */
/*
* Put the To: line in the header.
*/
#ifndef DOSPATH
asprintf(&header, "To: %s\n", to_address);
if (!header) {
fprintf(stderr, "Out of memory, you lose!\n");
exit(1);
}
#endif
/*
* Put the Mime-Version, Content-Type and
* Content-Transfer-Encoding in the header.
* This assumes that the same character set is used
* for composing the mail which is currently selected
* as display character set...
* Don't send a charset if we have a CJK character set
* selected, since it may not be appropriate for mail...
* Also don't use an unofficial "x-" charset.
* Also if the charset would be "us-ascii" (7-bit replacements
* selected, don't send any MIME headers. - kw
*/
if (strncasecomp(LYCharSet_UC[current_char_set].MIMEname,
"us-ascii", 8) != 0) {
StrAllocCat(header, "Mime-Version: 1.0\n");
if (!LYHaveCJKCharacterSet &&
strncasecomp(LYCharSet_UC[current_char_set].MIMEname, "x-", 2)
!= 0) {
HTSprintf(&header, "Content-Type: text/plain; charset=%s\n",
LYCharSet_UC[current_char_set].MIMEname);
}
StrAllocCat(header, "Content-Transfer-Encoding: 8bit\n");
}
/*
* Put the X-URL and X-Mailer lines in the header.
*/
if (!isEmpty(filename)) {
HTSprintf(&header, "X-URL: %s\n", filename);
} else {
HTSprintf(&header, "X-URL: mailto:%s\n", to_address);
}
HTSprintf(&header, "X-Mailer: %s, Version %s\n", LYNX_NAME, LYNX_VERSION);
if (!isEmpty(refid)) {
HTSprintf(&header, "In-Reply-To: <%s>\n", refid);
}
#endif /* VMS */
/*
* Clear the screen and inform the user.
*/
LYclear();
LYmove(2,0);
scrollok(LYwin, TRUE); /* Enable scrolling. */
if (body)
LYaddstr(SENDING_MESSAGE_WITH_BODY_TO);
else
LYaddstr(SENDING_COMMENT_TO);
show_addresses(to_address);
if (
#if USE_VMS_MAILER
(isPMDF == TRUE) &&
#endif /* VMS */
(cp = ccaddr) != NULL)
{
if (strchr(cp, ',') != NULL) {
LYaddstr(WITH_COPIES_TO);
} else {
LYaddstr(WITH_COPY_TO);
}
show_addresses(ccaddr);
}
LYaddstr(CTRL_G_TO_CANCEL_SEND);
#if USE_VMS_MAILER
if (isPMDF || !body) {
#endif /* USE_VMS_MAILER */
#ifndef NO_ANONYMOUS_EMAIL
/*
* Get the user's personal name.
*/
LYaddstr(ENTER_NAME_OR_BLANK);
#if USE_VMS_MAILER
if (isPMDF) {
label = "Personal_name: ";
} else {
label = "X-Personal_name: ";
}
#else
label = "X-Personal_Name: ";
#endif /* USE_VMS_MAILER */
if (!header_prompt(label, &personal_name, LINESIZE)) {
goto cancelled;
}
if (*personal_name) {
#if USE_VMS_MAILER
fprintf((isPMDF ? hfd : fd), "%s: %s\n", label, personal_name);
#else
HTSprintf(&header, "%s: %s\n", label, personal_name);
#endif /* VMS */
}
/*
* Get the user's return address.
*/
LYaddstr(ENTER_MAIL_ADDRESS_OR_OTHER);
LYaddstr(MEANS_TO_CONTACT_FOR_RESPONSE);
#if USE_VMS_MAILER
if (isPMDF) {
label = "From";
} else {
label = "X-From";
}
#else
label = "From";
#endif /* VMS */
/* Add the personal mail address if there is one. */
if (personal_mail_address)
StrAllocCopy(from_address, personal_mail_address);
if (!header_prompt(label, &from_address, LINESIZE)) {
goto cancelled;
}
#if USE_VMS_MAILER
if (*from_address) {
fprintf(isPMDF ? hfd : fd, "%s: %s\n", label, from_address);
}
if (!isPMDF) {
fprintf(fd, "\n");
}
#else
HTSprintf(&header, "%s: %s\n", label, from_address);
#endif /* USE_VMS_MAILER */
#endif /* !NO_ANONYMOUS_EMAIL */
#if USE_VMS_MAILER
}
#endif /* USE_VMS_MAILER */
/*
* Get the subject line.
*/
LYaddstr(ENTER_SUBJECT_LINE);
label = "Subject";
if (*default_subject) {
StrAllocCopy(the_subject, default_subject);
} else if (!isEmpty(filename)) {
HTSprintf(&the_subject, "%s", filename);
} else {
HTSprintf(&the_subject, "mailto:%s", to_address);
}
if (!header_prompt(label, &the_subject, MAX_SUBJECT)) {
goto cancelled;
}
/*
* Offer a CC line, if permitted. - FM
*/
if (!LYNoCc) {
LYaddstr(ENTER_ADDRESS_FOR_CC);
LYaddstr(BLANK_FOR_NO_COPY);
if (personal_mail_address)
StrAllocCopy(cc_address, personal_mail_address);
if (!header_prompt("Cc", &cc_address, LINESIZE)) {
goto cancelled;
}
comma_append(&ccaddr, cc_address);
}
#if !USE_VMS_MAILER
HTSprintf(&header, "%s: %s\n", label, the_subject);
#if !CAN_PIPE_TO_MAILER
if (*to_address) {
HTSprintf(&header, "To: %s\n", to_address);
}
#endif
/*
** Add the Cc: header. - FM
*/
if (!isEmpty(ccaddr)) {
HTSprintf(&header, "Cc: %s\n", ccaddr);
}
/*
** Add the Keywords: header. - FM
*/
if (!isEmpty(keywords)) {
HTSprintf(&header, "Keywords: %s\n", keywords);
}
/*
* Terminate the header.
*/
StrAllocCat(header, "\n");
CTRACE((tfp,"**header==\n%s",header));
#endif /* !VMS */
if (!no_editor && !isEmpty(editor)) {
if (body) {
cp1 = body;
while((cp = strchr(cp1, '\n')) != NULL) {
*cp++ = '\0';
fprintf(fd, "%s\n", cp1);
cp1 = cp;
}
} else if (strcmp(HTLoadedDocumentURL(), "")) {
/*
* Ask if the user wants to include the original message.
*/
BOOLEAN is_preparsed = (BOOL) (LYPreparsedSource &&
HTisDocumentSource());
if (HTConfirm(is_preparsed
? INC_PREPARSED_MSG_PROMPT
: INC_ORIG_MSG_PROMPT) == YES) {
print_wwwfile_to_fd(fd, (BOOL) !is_preparsed);
}
}
LYCloseTempFP(fd); /* Close the tmpfile. */
scrollok(LYwin,FALSE); /* Stop scrolling. */
if (term_letter || LYCharIsINTERRUPT(c))
goto cleanup;
/*
* Spawn the users editor on the mail file
*/
edit_temporary_file(my_tmpfile, "", SPAWNING_EDITOR_FOR_MAIL);
} else if (body) {
/*
* Let user review the body. - FM
*/
LYclear();
LYmove(0,0);
LYaddstr(REVIEW_MESSAGE_BODY);
LYrefresh();
cp1 = body;
i = (LYlines - 5);
while((cp = strchr(cp1, '\n')) != NULL) {
if (i <= 0) {
LYaddstr(RETURN_TO_CONTINUE);
LYrefresh();
c = LYgetch();
LYaddstr("\n");
if (term_letter || LYCharIsINTERRUPT(c)) {
goto cancelled;
}
i = (LYlines - 2);
}
*cp++ = '\0';
fprintf(fd, "%s\n", cp1);
LYaddstr(cp1);
LYaddstr("\n");
cp1 = cp;
i--;
}
while (i >= 0) {
LYaddstr("\n");
i--;
}
LYrefresh();
LYCloseTempFP(fd); /* Close the tmpfile. */
scrollok(LYwin,FALSE); /* Stop scrolling. */
} else {
/*
* Use the internal line editor for the message.
*/
LYaddstr(ENTER_MESSAGE_BELOW);
LYaddstr(ENTER_PERIOD_WHEN_DONE_A);
LYaddstr(ENTER_PERIOD_WHEN_DONE_B);
LYaddstr("\n\n");
LYrefresh();
*user_input = '\0';
if (LYgetstr(user_input, VISIBLE, sizeof(user_input), NORECALL) < 0 ||
term_letter || STREQ(user_input, ".")) {
goto cancelled;
}
while (!STREQ(user_input, ".") && !term_letter) {
LYaddstr("\n");
remove_tildes(user_input);
fprintf(fd, "%s\n", user_input);
*user_input = '\0';
if (LYgetstr(user_input, VISIBLE,
sizeof(user_input), NORECALL) < 0) {
goto cancelled;
}
}
fprintf(fd, "\n"); /* Terminate the message. */
LYCloseTempFP(fd); /* Close the tmpfile. */
scrollok(LYwin,FALSE); /* Stop scrolling. */
}
#if !USE_VMS_MAILER
/*
* Ignore CTRL-C on this last question.
*/
signal(SIGINT, SIG_IGN);
#endif /* !VMS */
LYStatusLine = (LYlines - 1);
c = HTConfirm (body ? SEND_MESSAGE_PROMPT : SEND_COMMENT_PROMPT);
LYStatusLine = -1;
if (c != YES) {
LYclear(); /* clear the screen */
goto cleanup;
}
if ((body == NULL && LynxSigFile != NULL) &&
(fp = fopen(LynxSigFile, TXT_R)) != NULL) {
LYStatusLine = (LYlines - 1);
if (term_letter) {
_user_message(APPEND_SIG_FILE, LynxSigFile);
c = 0;
} else {
char *msg = NULL;
HTSprintf0(&msg, APPEND_SIG_FILE, LynxSigFile);
c = HTConfirm(msg);
FREE(msg);
}
LYStatusLine = -1;
if (c == YES) {
if ((fd = fopen(my_tmpfile, TXT_A)) != NULL) {
char *buffer = NULL;
fputs("-- \n", fd);
while (LYSafeGets(&buffer, fp) != NULL) {
fputs(buffer, fd);
}
LYCloseOutput(fd);
FREE(buffer);
}
}
LYCloseInput(fp);
}
LYclear(); /* Clear the screen. */
/*
* Send the message.
*/
#if USE_VMS_MAILER
/*
* Set the mail command. - FM
*/
if (isPMDF) {
/*
* For PMDF, put any keywords and the subject
* in the header file and close it. - FM
*/
if (!isEmpty(keywords)) {
fprintf(hfd, "Keywords: %s\n", keywords);
}
fprintf(hfd, "Subject: %s\n\n", the_subject);
LYCloseTempFP(hfd);
/*
* Now set up the command. - FM
*/
HTSprintf0(&command, "%s %s %s,%s ",
system_mail,
system_mail_flags,
hdrfile,
my_tmpfile);
} else {
/*
* For "generic" VMS MAIL, include the subject in the
* command, and ignore any keywords to minimize risk
* of them making the line too long or having problem
* characters. - FM
*/
HTSprintf0(&command, "%s %s%s/subject=\"%s\" %s ",
system_mail,
system_mail_flags,
(strncasecomp(system_mail, "MAIL", 4) ? "" : "/noself"),
the_subject,
my_tmpfile);
}
vms_append_addrs(&command, to_address, "");
if (!isEmpty(ccaddr)) {
vms_append_addrs(&command, ccaddr, "/CC");
}
stop_curses();
printf("%s\n\n$ %s\n\n%s", SENDING_COMMENT, command, PLEASE_WAIT);
LYSystem(command); /* SENDING COMMENT (VMS) */
FREE(command);
LYSleepAlert();
start_curses();
#else /* Unix/DOS/Windows */
/*
* Send the tmpfile into sendmail.
*/
_statusline(SENDING_YOUR_MSG);
#if CAN_PIPE_TO_MAILER
signal(SIGINT, SIG_IGN);
if ((fp = LYPipeToMailer()) == 0) {
HTInfoMsg(CANCELLED);
}
#else
if ((fp = LYOpenTemp(tmpfile2, ".txt", "w")) == NULL) {
HTAlert(MAILTO_URL_TEMPOPEN_FAILED);
}
#endif /* CAN_PIPE_TO_MAILER */
if (fp != 0) {
fd = fopen(my_tmpfile, TXT_R);
if (fd == NULL) {
HTInfoMsg(CANCELLED);
#if CAN_PIPE_TO_MAILER
pclose(fp);
#else
LYCloseTempFP(fp);
#endif /* CAN_PIPE_TO_MAILER */
} else {
#if USE_BLAT_MAILER
if (!mail_is_blat)
fputs(header, fp);
#else
fputs(header, fp);
#endif
while ((n = fread(buf, 1, sizeof(buf), fd)) != 0) {
fwrite(buf, 1, n, fp);
}
#if CAN_PIPE_TO_MAILER
pclose(fp);
#else
LYCloseTempFP(fp); /* Close the tmpfile. */
LYSendMailFile (
to_address,
tmpfile2,
the_subject,
ccaddr,
SENDING_COMMENT);
LYRemoveTemp(tmpfile2); /* Delete the tmpfile. */
#endif /* CAN_PIPE_TO_MAILER */
LYCloseInput(fd); /* Close the tmpfile. */
}
}
#endif /* USE_VMS_MAILER */
goto cleanup;
/*
* Come here to cleanup and exit.
*/
cancelled:
HTInfoMsg(CANCELLED);
LYCloseTempFP(fd); /* Close the tmpfile. */
scrollok(LYwin,FALSE); /* Stop scrolling. */
cleanup:
signal(SIGINT, cleanup_sig);
term_letter = FALSE;
#if USE_VMS_MAILER
while (LYRemoveTemp(my_tmpfile) == 0)
; /* Delete the tmpfile(s). */
if (isPMDF) {
LYRemoveTemp(hdrfile); /* Delete the hdrfile. */
}
#else
FREE(header);
LYRemoveTemp(my_tmpfile); /* Delete the tmpfile. */
#endif /* VMS */
FREE(from_address);
FREE(the_subject);
FREE(cc_address);
FREE(to_address);
FREE(ccaddr);
FREE(keywords);
FREE(body);
return;
}
/*
* This function makes the history page seem like any other type of file since
* more info is needed than can be provided by the normal link structure. We
* saved out the history number to a special URL.
*
* The info looks like: LYNXHIST:#
*/
BOOLEAN historytarget(DocInfo *newdoc)
{
int number;
DocAddress WWWDoc;
HTParentAnchor *tmpanchor;
HText *text;
BOOLEAN treat_as_intern = FALSE;
if ((!newdoc || !newdoc->address) ||
strlen(newdoc->address) < 10 || !isdigit(UCH(*(newdoc->address + 9))))
return (FALSE);
if ((number = atoi(newdoc->address + 9)) > nhist + nhist_extra || number < 0)
return (FALSE);
/*
* Optimization: assume we came from the History Page,
* so never return back - always a new version next time.
* But check first whether HTMainText is really the History
* Page document - in some obscure situations this may not be
* the case. If HTMainText seems to be a History Page document,
* also check that it really hasn't been pushed. - LP, kw
*/
if (HTMainText && nhist > 0 &&
!strcmp(HTLoadedDocumentTitle(), HISTORY_PAGE_TITLE) &&
LYIsUIPage3(HTLoadedDocumentURL(), UIP_HISTORY, 0) &&
strcmp(HTLoadedDocumentURL(), HDOC(nhist - 1).address)) {
HTuncache_current_document(); /* don't waste the cache */
}
LYpop_num(number, newdoc);
if (((newdoc->internal_link &&
history[number].intern_seq_start == history[nhist - 1].intern_seq_start)
|| (number < nhist - 1 &&
HDOC(nhist - 1).internal_link &&
number == history[nhist - 1].intern_seq_start))
&& !(LYforce_no_cache == TRUE && LYoverride_no_cache == FALSE)) {
if (track_internal_links) {
LYforce_no_cache = FALSE;
LYinternal_flag = TRUE;
newdoc->internal_link = TRUE;
treat_as_intern = TRUE;
}
} else {
newdoc->internal_link = FALSE;
}
/*
* If we have POST content, and have LYresubmit_posts set or have no_cache
* set or do not still have the text cached, ask the user whether to
* resubmit the form. - FM
*/
if (newdoc->post_data != NULL) {
WWWDoc.address = newdoc->address;
WWWDoc.post_data = newdoc->post_data;
WWWDoc.post_content_type = newdoc->post_content_type;
WWWDoc.bookmark = newdoc->bookmark;
WWWDoc.isHEAD = newdoc->isHEAD;
WWWDoc.safe = newdoc->safe;
tmpanchor = HTAnchor_findAddress(&WWWDoc);
text = (HText *) HTAnchor_document(tmpanchor);
if (((((LYresubmit_posts == TRUE) ||
(LYforce_no_cache == TRUE &&
LYoverride_no_cache == FALSE)) &&
!(treat_as_intern && !reloading)) ||
text == NULL) &&
(isLYNXIMGMAP(newdoc->address) ||
HTConfirm(CONFIRM_POST_RESUBMISSION) == TRUE)) {
LYforce_no_cache = TRUE;
LYoverride_no_cache = FALSE;
} else if (text != NULL) {
LYforce_no_cache = FALSE;
LYoverride_no_cache = TRUE;
} else {
HTInfoMsg(CANCELLED);
return (FALSE);
}
}
if (number != 0)
StrAllocCat(newdoc->title, gettext(" (From History)"));
return (TRUE);
}
static int LYLoadCGI(const char *arg,
HTParentAnchor *anAnchor,
HTFormat format_out,
HTStream *sink)
{
int status = 0;
#ifdef LYNXCGI_LINKS
#ifndef VMS
char *cp;
struct stat stat_buf;
char *pgm = NULL; /* executable */
char *pgm_args = NULL; /* and its argument(s) */
int statrv;
char *orig_pgm = NULL; /* Path up to ? as given, URL-escaped */
char *document_root = NULL; /* Corrected value of DOCUMENT_ROOT */
char *path_info = NULL; /* PATH_INFO extracted from pgm */
char *pgm_buff = NULL; /* PATH_INFO extraction buffer */
char *path_translated; /* From document_root/path_info */
if (isEmpty(arg) || strlen(arg) <= 8) {
HTAlert(BAD_REQUEST);
status = -2;
return (status);
} else {
if (StrNCmp(arg, "lynxcgi://localhost", 19) == 0) {
StrAllocCopy(pgm, arg + 19);
} else {
StrAllocCopy(pgm, arg + 8);
}
if ((cp = StrChr(pgm, '?')) != NULL) { /* Need to terminate executable */
*cp++ = '\0';
pgm_args = cp;
}
}
StrAllocCopy(orig_pgm, pgm);
if (trimPoundSelector(pgm) != NULL) {
/*
* Strip a #fragment from path. In this case any pgm_args found above
* will also be bogus, since the '?' came after the '#' and is part of
* the fragment. Note that we don't handle the case where a '#'
* appears after a '?' properly according to URL rules. - kw
*/
pgm_args = NULL;
}
HTUnEscape(pgm);
/* BEGIN WebSter Mods */
/* If pgm is not stat-able, see if PATH_INFO data is at the end of pgm */
if ((statrv = stat(pgm, &stat_buf)) < 0) {
StrAllocCopy(pgm_buff, pgm);
while (statrv < 0 || (statrv = stat(pgm_buff, &stat_buf)) < 0) {
if ((cp = strrchr(pgm_buff, '/')) != NULL) {
*cp = '\0';
statrv = 1; /* force new stat() - kw */
} else {
PERROR("strrchr(pgm_buff, '/') returned NULL");
break;
}
}
if (statrv < 0) {
/* Did not find PATH_INFO data */
PERROR("stat() of pgm_buff failed");
} else {
/* Found PATH_INFO data. Strip it off of pgm and into path_info. */
StrAllocCopy(path_info, pgm + strlen(pgm_buff));
/* The following is safe since pgm_buff was derived from pgm
by stripping stuff off its end and by HTUnEscaping, so we
know we have enough memory allocated for pgm. Note that
pgm_args may still point into that memory, so we cannot
reallocate pgm here. - kw */
strcpy(pgm, pgm_buff);
CTRACE((tfp,
"LYNXCGI: stat() of %s succeeded, path_info=\"%s\".\n",
pgm_buff, path_info));
}
FREE(pgm_buff);
}
/* END WebSter Mods */
if (statrv != 0) {
/*
* Neither the path as given nor any components examined by backing up
* were stat()able. - kw
*/
HTAlert(gettext("Unable to access cgi script"));
PERROR("stat() failed");
status = -4;
} else
#ifdef _WINDOWS /* 1998/01/14 (Wed) 09:16:04 */
#define isExecutable(mode) (mode & (S_IXUSR))
#else
#define isExecutable(mode) (mode & (S_IXUSR|S_IXGRP|S_IXOTH))
#endif
if (!(S_ISREG(stat_buf.st_mode) && isExecutable(stat_buf.st_mode))) {
/*
* Not a runnable file, See if we can load it using "file:" code.
*/
char *new_arg = NULL;
/*
* But try "file:" only if the file we are looking at is the path as
* given (no path_info was extracted), otherwise it will be to
* confusing to know just what file is loaded. - kw
*/
if (path_info) {
CTRACE((tfp,
"%s is not a file and %s not an executable, giving up.\n",
orig_pgm, pgm));
FREE(path_info);
FREE(pgm);
FREE(orig_pgm);
status = -4;
return (status);
}
LYLocalFileToURL(&new_arg, orig_pgm);
CTRACE((tfp, "%s is not an executable file, passing the buck.\n", arg));
status = HTLoadFile(new_arg, anAnchor, format_out, sink);
FREE(new_arg);
} else if (path_info &&
anAnchor != HTMainAnchor &&
!(reloading && anAnchor->document) &&
strcmp(arg, HTLoadedDocumentURL()) &&
HText_AreDifferent(anAnchor, arg) &&
HTUnEscape(orig_pgm) &&
!can_exec_cgi(orig_pgm, "")) {
/*
* If we have extra path info and are not just reloading the current,
* check the full file path (after unescaping) now to catch forbidden
* segments. - kw
*/
status = HT_NOT_LOADED;
} else if (no_lynxcgi) {
HTUserMsg(CGI_DISABLED);
status = HT_NOT_LOADED;
} else if (no_bookmark_exec &&
anAnchor != HTMainAnchor &&
!(reloading && anAnchor->document) &&
strcmp(arg, HTLoadedDocumentURL()) &&
HText_AreDifferent(anAnchor, arg) &&
HTLoadedDocumentBookmark()) {
/*
* If we are reloading a lynxcgi document that had already been loaded,
* the various checks above should allow it even if no_bookmark_exec is
* TRUE an we are not now coming from a bookmark page. - kw
*/
HTUserMsg(BOOKMARK_EXEC_DISABLED);
status = HT_NOT_LOADED;
} else if (anAnchor != HTMainAnchor &&
!(reloading && anAnchor->document) &&
strcmp(arg, HTLoadedDocumentURL()) &&
HText_AreDifferent(anAnchor, arg) &&
!can_exec_cgi(pgm, pgm_args)) {
/*
* If we are reloading a lynxcgi document that had already been loaded,
* the various checks above should allow it even if exec_ok() would
* reject it because we are not now coming from a document with a URL
* allowed by TRUSTED_LYNXCGI rules. - kw
*/
status = HT_NOT_LOADED;
} else {
HTFormat format_in;
HTStream *target = NULL; /* Unconverted data */
int fd1[2], fd2[2];
char buf[MAX_LINE];
int pid;
#ifdef HAVE_TYPE_UNIONWAIT
union wait wstatus;
#else
int wstatus;
#endif
fd1[0] = -1;
fd1[1] = -1;
fd2[0] = -1;
fd2[1] = -1;
if (anAnchor->isHEAD || keep_mime_headers) {
/* Show output as plain text */
format_in = WWW_PLAINTEXT;
} else {
/* Decode full HTTP response */
format_in = HTAtom_for("www/mime");
}
target = HTStreamStack(format_in,
format_out,
sink, anAnchor);
if (!target || target == NULL) {
char *tmp = 0;
HTSprintf0(&tmp, CANNOT_CONVERT_I_TO_O,
HTAtom_name(format_in),
HTAtom_name(format_out));
HTAlert(tmp);
FREE(tmp);
status = HT_NOT_LOADED;
} else if (anAnchor->post_data && pipe(fd1) < 0) {
HTAlert(CONNECT_SET_FAILED);
PERROR("pipe() failed");
status = -3;
} else if (pipe(fd2) < 0) {
HTAlert(CONNECT_SET_FAILED);
PERROR("pipe() failed");
close(fd1[0]);
close(fd1[1]);
status = -3;
} else {
static BOOL first_time = TRUE; /* One time setup flag */
if (first_time) { /* Set up static environment variables */
first_time = FALSE; /* Only once */
add_environment_value("REMOTE_HOST=localhost");
add_environment_value("REMOTE_ADDR=127.0.0.1");
HTSprintf0(&user_agent, "HTTP_USER_AGENT=%s/%s libwww/%s",
LYNX_NAME, LYNX_VERSION, HTLibraryVersion);
add_environment_value(user_agent);
HTSprintf0(&server_software, "SERVER_SOFTWARE=%s/%s",
LYNX_NAME, LYNX_VERSION);
add_environment_value(server_software);
}
fflush(stdout);
fflush(stderr);
CTRACE_FLUSH(tfp);
if ((pid = fork()) > 0) { /* The good, */
ssize_t chars;
off_t total_chars;
close(fd2[1]);
if (anAnchor->post_data) {
ssize_t written;
int remaining, total_written = 0;
close(fd1[0]);
/* We have form data to push across the pipe */
if (TRACE) {
CTRACE((tfp,
"LYNXCGI: Doing post, content-type '%s'\n",
anAnchor->post_content_type));
CTRACE((tfp, "LYNXCGI: Writing:\n"));
trace_bstring(anAnchor->post_data);
CTRACE((tfp, "----------------------------------\n"));
}
remaining = BStrLen(anAnchor->post_data);
while ((written = write(fd1[1],
BStrData(anAnchor->post_data) + total_written,
(size_t) remaining)) != 0) {
if (written < 0) {
#ifdef EINTR
if (errno == EINTR)
continue;
#endif /* EINTR */
#ifdef ERESTARTSYS
if (errno == ERESTARTSYS)
continue;
#endif /* ERESTARTSYS */
PERROR("write() of POST data failed");
break;
}
CTRACE((tfp, "LYNXCGI: Wrote %d bytes of POST data.\n",
(int) written));
total_written += (int) written;
remaining -= (int) written;
if (remaining == 0)
break;
}
if (remaining != 0) {
CTRACE((tfp, "LYNXCGI: %d bytes remain unwritten!\n",
remaining));
}
close(fd1[1]);
}
HTReadProgress(total_chars = 0, (off_t) 0);
while ((chars = read(fd2[0], buf, sizeof(buf))) != 0) {
if (chars < 0) {
#ifdef EINTR
if (errno == EINTR)
continue;
#endif /* EINTR */
#ifdef ERESTARTSYS
if (errno == ERESTARTSYS)
continue;
#endif /* ERESTARTSYS */
PERROR("read() of CGI output failed");
break;
}
total_chars += (int) chars;
HTReadProgress(total_chars, (off_t) 0);
CTRACE((tfp, "LYNXCGI: Rx: %.*s\n", (int) chars, buf));
(*target->isa->put_block) (target, buf, (int) chars);
}
if (chars < 0 && total_chars == 0) {
status = HT_NOT_LOADED;
(*target->isa->_abort) (target, NULL);
target = NULL;
} else if (chars != 0) {
status = HT_PARTIAL_CONTENT;
} else {
status = HT_LOADED;
}
#ifndef HAVE_WAITPID
while (wait(&wstatus) != pid) ; /* do nothing */
#else
while (-1 == waitpid(pid, &wstatus, 0)) { /* wait for child */
#ifdef EINTR
if (errno == EINTR)
continue;
#endif /* EINTR */
#ifdef ERESTARTSYS
if (errno == ERESTARTSYS)
continue;
#endif /* ERESTARTSYS */
break;
}
#endif /* !HAVE_WAITPID */
close(fd2[0]);
} else if (pid == 0) { /* The Bad, */
char **argv = NULL;
int argv_cnt = 3; /* name, one arg and terminator */
char **cur_argv = NULL;
int exec_errno;
/* Set up output pipe */
close(fd2[0]);
dup2(fd2[1], fileno(stdout)); /* Should check success code */
dup2(fd2[1], fileno(stderr));
close(fd2[1]);
if (non_empty(language)) {
HTSprintf0(&accept_language, "HTTP_ACCEPT_LANGUAGE=%s", language);
add_environment_value(accept_language);
}
if (non_empty(pref_charset)) {
cp = NULL;
StrAllocCopy(cp, "HTTP_ACCEPT_CHARSET=");
StrAllocCat(cp, pref_charset);
add_environment_value(cp);
}
if (anAnchor->post_data &&
anAnchor->post_content_type) {
cp = NULL;
StrAllocCopy(cp, "CONTENT_TYPE=");
StrAllocCat(cp, anAnchor->post_content_type);
add_environment_value(cp);
}
if (anAnchor->post_data) { /* post script, read stdin */
close(fd1[1]);
dup2(fd1[0], fileno(stdin));
close(fd1[0]);
/* Build environment variables */
add_environment_value("REQUEST_METHOD=POST");
HTSprintf0(&post_len, "CONTENT_LENGTH=%d",
BStrLen(anAnchor->post_data));
add_environment_value(post_len);
} else {
close(fileno(stdin));
if (anAnchor->isHEAD) {
add_environment_value("REQUEST_METHOD=HEAD");
}
}
/*
* Set up argument line, mainly for <index> scripts
*/
if (pgm_args != NULL) {
for (cp = pgm_args; *cp != '\0'; cp++) {
if (*cp == '+') {
argv_cnt++;
}
}
}
argv = (char **) malloc((unsigned) argv_cnt * sizeof(char *));
if (argv == NULL) {
outofmem(__FILE__, "LYCgi");
}
assert(argv != NULL);
cur_argv = argv + 1; /* For argv[0] */
if (pgm_args != NULL) {
char *cr;
/* Data for a get/search form */
if (is_www_index) {
add_environment_value("REQUEST_METHOD=SEARCH");
} else if (!anAnchor->isHEAD && !anAnchor->post_data) {
add_environment_value("REQUEST_METHOD=GET");
}
cp = NULL;
StrAllocCopy(cp, "QUERY_STRING=");
StrAllocCat(cp, pgm_args);
add_environment_value(cp);
/*
* Split up arguments into argv array
*/
cp = pgm_args;
cr = cp;
while (1) {
if (*cp == '\0') {
*(cur_argv++) = HTUnEscape(cr);
break;
} else if (*cp == '+') {
*cp++ = '\0';
*(cur_argv++) = HTUnEscape(cr);
cr = cp;
}
cp++;
}
} else if (!anAnchor->isHEAD && !anAnchor->post_data) {
add_environment_value("REQUEST_METHOD=GET");
}
*cur_argv = NULL; /* Terminate argv */
argv[0] = pgm;
/* Begin WebSter Mods -jkt */
if (LYCgiDocumentRoot != NULL) {
/* Add DOCUMENT_ROOT to env */
cp = NULL;
StrAllocCopy(cp, "DOCUMENT_ROOT=");
StrAllocCat(cp, LYCgiDocumentRoot);
add_environment_value(cp);
}
if (path_info != NULL) {
/* Add PATH_INFO to env */
cp = NULL;
StrAllocCopy(cp, "PATH_INFO=");
StrAllocCat(cp, path_info);
add_environment_value(cp);
}
if (LYCgiDocumentRoot != NULL && path_info != NULL) {
/* Construct and add PATH_TRANSLATED to env */
StrAllocCopy(document_root, LYCgiDocumentRoot);
LYTrimHtmlSep(document_root);
path_translated = document_root;
StrAllocCat(path_translated, path_info);
cp = NULL;
StrAllocCopy(cp, "PATH_TRANSLATED=");
StrAllocCat(cp, path_translated);
add_environment_value(cp);
FREE(path_translated);
}
/* End WebSter Mods -jkt */
execve(argv[0], argv, env);
exec_errno = errno;
PERROR("execve failed");
printf("Content-Type: text/plain\r\n\r\n");
if (!anAnchor->isHEAD) {
printf("exec of %s failed", pgm);
printf(": %s.\r\n", LYStrerror(exec_errno));
}
fflush(stdout);
fflush(stderr);
_exit(1);
} else { /* and the Ugly */
HTAlert(CONNECT_FAILED);
PERROR("fork() failed");
close(fd1[0]);
close(fd1[1]);
close(fd2[0]);
close(fd2[1]);
status = -1;
}
}
if (target != NULL) {
(*target->isa->_free) (target);
}
}
FREE(path_info);
FREE(pgm);
FREE(orig_pgm);
#else /* VMS */
HTStream *target;
char *buf = 0;
target = HTStreamStack(WWW_HTML,
format_out,
sink, anAnchor);
HTSprintf0(&buf, "<html>\n<head>\n<title>%s</title>\n</head>\n<body>\n",
gettext("Good Advice"));
PUTS(buf);
HTSprintf0(&buf, "<h1>%s</h1>\n", gettext("Good Advice"));
PUTS(buf);
HTSprintf0(&buf, "%s <a\n",
gettext("An excellent http server for VMS is available via"));
PUTS(buf);
HTSprintf0(&buf,
"href=\"http://www.ecr6.ohio-state.edu/www/doc/serverinfo.html\"\n");
PUTS(buf);
HTSprintf0(&buf, ">%s</a>.\n", gettext("this link"));
PUTS(buf);
HTSprintf0(&buf, "<p>%s\n",
gettext("It provides state of the art CGI script support.\n"));
PUTS(buf);
HTSprintf0(&buf, "</body>\n</html>\n");
PUTS(buf);
(*target->isa->_free) (target);
FREE(buf);
status = HT_LOADED;
#endif /* VMS */
#else /* LYNXCGI_LINKS */
HTUserMsg(CGI_NOT_COMPILED);
status = HT_NOT_LOADED;
#endif /* LYNXCGI_LINKS */
(void) arg;
(void) anAnchor;
(void) format_out;
(void) sink;
return (status);
}
int showlist(DocInfo *newdoc, BOOLEAN titles)
{
int cnt;
int refs, hidden_links;
static char tempfile[LY_MAXPATH];
static BOOLEAN last_titles = TRUE;
FILE *fp0;
char *Address = NULL, *Title = NULL, *cp = NULL;
char *LinkTitle = NULL; /* Rel stored as property of link, not of dest */
BOOLEAN intern_w_post = FALSE;
const char *desc = "unknown field or link";
void *helper;
refs = HText_sourceAnchors(HTMainText);
hidden_links = HText_HiddenLinkCount(HTMainText);
if (refs <= 0 && hidden_links > 0 &&
LYHiddenLinks != HIDDENLINKS_SEPARATE) {
HTUserMsg(NO_VISIBLE_REFS_FROM_DOC);
return (-1);
}
if (refs <= 0 && hidden_links <= 0) {
HTUserMsg(NO_REFS_FROM_DOC);
return (-1);
}
if ((fp0 = InternalPageFP(tempfile, titles == last_titles)) == 0)
return (-1);
LYLocalFileToURL(&(newdoc->address), tempfile);
LYRegisterUIPage(newdoc->address,
titles ? UIP_LIST_PAGE : UIP_ADDRLIST_PAGE);
last_titles = titles;
LYforce_HTML_mode = TRUE; /* force this file to be HTML */
LYforce_no_cache = TRUE; /* force this file to be new */
#ifdef EXP_ADDRLIST_PAGE
if (titles != TRUE)
BeginInternalPage(fp0, ADDRLIST_PAGE_TITLE, LIST_PAGE_HELP);
else
#endif
BeginInternalPage(fp0, LIST_PAGE_TITLE, LIST_PAGE_HELP);
StrAllocCopy(Address, HTLoadedDocumentURL());
LYEntify(&Address, FALSE);
fprintf(fp0, "%s%s<p>\n", gettext("References in "),
(non_empty(Address)
? Address
: gettext("this document:")));
FREE(Address);
if (refs > 0) {
fprintf(fp0, "<%s compact>\n", ((keypad_mode == NUMBERS_AS_ARROWS) ?
"ol" : "ul"));
if (hidden_links > 0)
fprintf(fp0, "<lh><em>%s</em>\n", gettext("Visible links:"));
}
if (hidden_links > 0) {
if (LYHiddenLinks == HIDDENLINKS_IGNORE)
hidden_links = 0;
}
helper = NULL; /* init */
for (cnt = 1; cnt <= refs; cnt++) {
HTChildAnchor *child = HText_childNextNumber(cnt, &helper);
HTAnchor *dest_intl = NULL;
HTAnchor *dest;
HTParentAnchor *parent;
char *address;
const char *title;
if (child == 0) {
/*
* child should not be 0 unless form field numbering is on and cnt
* is the number of a form input field. HText_FormDescNumber()
* will set desc to a description of what type of input field this
* is. We'll list it to ensure that the link numbers on the list
* page match the numbering in the original document, but won't
* create a forward link to the form. - FM && LE
*
* Changed to create a fake hidden link, to get the numbering right
* in connection with always treating this file as
* HIDDENLINKS_MERGE in GridText.c - kw
*/
if (fields_are_numbered()) {
HText_FormDescNumber(cnt, &desc);
fprintf(fp0,
"<li><a id=%d href=\"#%d\">form field</a> = <em>%s</em>\n",
cnt, cnt, desc);
}
continue;
}
#ifndef DONT_TRACK_INTERNAL_LINKS
dest_intl = HTAnchor_followTypedLink(child, HTInternalLink);
#endif
dest = dest_intl ?
dest_intl : HTAnchor_followLink(child);
parent = HTAnchor_parent(dest);
if (!intern_w_post && dest_intl &&
HTMainAnchor &&
HTMainAnchor->post_data &&
parent->post_data &&
BINEQ(HTMainAnchor->post_data, parent->post_data)) {
/*
* Set flag to note that we had at least one internal link, if the
* document from which we are generating the list has associated
* POST data; after an extra check that the link destination really
* has the same POST data so that we can believe it is an internal
* link.
*/
intern_w_post = TRUE;
}
address = HTAnchor_address(dest);
title = titles ? HTAnchor_title(parent) : NULL;
if (dest_intl) {
HTSprintf0(&LinkTitle, "(internal)");
} else if (titles && child->type &&
dest == child->dest &&
!strncmp(HTAtom_name(child->type),
"RelTitle: ", 10)) {
HTSprintf0(&LinkTitle, "(%s)", HTAtom_name(child->type) + 10);
} else {
FREE(LinkTitle);
}
StrAllocCopy(Address, address);
FREE(address);
LYEntify(&Address, TRUE);
if (non_empty(title)) {
LYformTitle(&Title, title);
LYEntify(&Title, TRUE);
if (*Title) {
cp = findPoundSelector(Address);
} else {
FREE(Title);
}
}
fprintf(fp0, "<li><a href=\"%s\"%s>%s%s%s%s%s</a>\n", Address,
dest_intl ? " TYPE=\"internal link\"" : "",
NonNull(LinkTitle),
((HTAnchor *) parent != dest) && Title ? "in " : "",
(char *) (Title ? Title : Address),
(Title && cp) ? " - " : "",
(Title && cp) ? (cp + 1) : "");
FREE(Address);
FREE(Title);
}
FREE(LinkTitle);
if (hidden_links > 0) {
if (refs > 0)
fprintf(fp0, "\n</%s>\n\n<p>\n",
((keypad_mode == NUMBERS_AS_ARROWS) ?
"ol" : "ul"));
fprintf(fp0, "<%s compact>\n", ((keypad_mode == NUMBERS_AS_ARROWS) ?
"ol continue" : "ul"));
fprintf(fp0, "<lh><em>%s</em>\n", gettext("Hidden links:"));
}
for (cnt = 0; cnt < hidden_links; cnt++) {
StrAllocCopy(Address, HText_HiddenLinkAt(HTMainText, cnt));
LYEntify(&Address, FALSE);
if (isEmpty(Address)) {
FREE(Address);
continue;
}
fprintf(fp0, "<li><a href=\"%s\">%s</a>\n", Address, Address);
FREE(Address);
}
fprintf(fp0, "\n</%s>\n", ((keypad_mode == NUMBERS_AS_ARROWS) ?
"ol" : "ul"));
EndInternalPage(fp0);
LYCloseTempFP(fp0);
/*
* Make necessary changes to newdoc before returning to caller. If the
* intern_w_post flag is set, we keep the POST data in newdoc that have
* been passed in. They should be the same as in the loaded document for
* which we generated the list. In that case the file we have written will
* be associated with the same POST data when it is loaded after we are
* done here, so that following one of the links we have marked as
* "internal link" can lead back to the underlying document with the right
* address+post_data combination. - kw
*/
if (intern_w_post) {
newdoc->internal_link = TRUE;
} else {
LYFreePostData(newdoc);
newdoc->internal_link = FALSE;
}
newdoc->isHEAD = FALSE;
newdoc->safe = FALSE;
return (0);
}
