/* * $LynxId: LYUpload.c,v 1.41 2021/07/29 20:32:26 tom Exp $ * * Routines to upload files to the local filesystem. * Created by: Rick Mallett, Carleton University * Report problems to rmallett@ccs.carleton.ca * Modified 15-Dec-95 George Lindholm (lindholm@ucs.ubc.ca): * Reread the upload menu page every time, in case the "upload" directory * has changed (make the current directory that for the upload process). * Prompt for the upload file name if there is no "%s" in the command * string. Most protocols allow the user to specify the file name * from the client side. Xmodem appears to be the only that can't * figure out the filename from the transfer data so it needs the * information from lynx (or an upload script which prompts for it). * On the other hand, zmodem aborts when you give it a filename on * the command line (great way of bypassing the nodotfile code :=( ). */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define SUBDIR_COMMAND "cd %s ; " /* * LYUpload uploads a file to a given location using a specified upload method. * It parses an incoming link that looks like: * LYNXDIRED://UPLOAD=<#>/TO= */ int LYUpload(char *line) { char *method, *directory; int method_number; int count; char *the_upload = 0; char tmpbuf[LY_MAXPATH]; char *filename = NULL; lynx_list_item_type *upload_command = 0; char *the_command = 0; /* * Use configured upload commands. */ if ((directory = LYstrstr(line, "TO=")) == NULL) goto failed; *(directory - 1) = '\0'; /* go past "TO=" */ directory += 3; if ((method = LYstrstr(line, "UPLOAD=")) == NULL) goto failed; /* * Go past "UPLOAD=". */ method += 7; method_number = atoi(method); for (count = 0, upload_command = uploaders; count < method_number; count++, upload_command = upload_command->next) ; /* null body */ /* * Parsed out the Method and the Location? */ if (upload_command->command == NULL) { HTAlert(gettext("ERROR! - upload command is misconfigured")); goto failed; } /* * Care about the local name? */ if (HTCountCommandArgs(upload_command->command)) { /* * Commands have the form "command %s [etc]" where %s is the filename. */ _statusline(FILENAME_PROMPT); retry: *tmpbuf = '\0'; if (LYGetStr(tmpbuf, FALSE, sizeof(tmpbuf), NORECALL) < 0) goto cancelled; if (*tmpbuf == '\0') goto cancelled; if (strstr(tmpbuf, "../") != NULL) { HTAlert(gettext("Illegal redirection \"../\" found! Request ignored.")); goto cancelled; } else if (StrChr(tmpbuf, '/') != NULL) { HTAlert(gettext("Illegal character \"/\" found! Request ignored.")); goto cancelled; } else if (tmpbuf[0] == '~') { HTAlert(gettext("Illegal redirection using \"~\" found! Request ignored.")); goto cancelled; } HTSprintf0(&filename, "%s/%s", directory, tmpbuf); #ifdef HAVE_POPEN if (LYIsPipeCommand(filename)) { HTAlert(CANNOT_WRITE_TO_FILE); _statusline(NEW_FILENAME_PROMPT); goto retry; } #endif switch (LYValidateOutput(filename)) { case 'Y': break; case 'N': goto retry; default: goto cancelled; } /* * See if we can write to it. */ CTRACE((tfp, "LYUpload: filename is %s", filename)); HTAddParam(&the_upload, upload_command->command, 1, filename); HTEndParam(&the_upload, upload_command->command, 1); } else { /* No substitution, no changes */ StrAllocCopy(the_upload, upload_command->command); } HTAddParam(&the_command, SUBDIR_COMMAND, 1, directory); HTEndParam(&the_command, SUBDIR_COMMAND, 1); StrAllocCat(the_command, the_upload); CTRACE((tfp, "command: %s\n", the_command)); stop_curses(); LYSystem(the_command); start_curses(); FREE(the_command); FREE(the_upload); #if defined(MULTI_USER_UNIX) if (filename != 0) chmod(filename, HIDE_CHMOD); #endif /* UNIX */ FREE(filename); return 1; failed: HTAlert(gettext("Unable to upload file.")); return 0; cancelled: HTInfoMsg(CANCELLING); return 0; } /* * LYUpload_options writes out the current upload choices to a file so that the * user can select printers in the same way that they select all other links. * Upload links look like: * LYNXDIRED://UPLOAD=<#>/TO= */ int LYUpload_options(char **newfile, char *directory) { static char tempfile[LY_MAXPATH]; FILE *fp0; lynx_list_item_type *cur_upload; int count; char *curloc = NULL; if ((fp0 = InternalPageFP(tempfile, TRUE)) == 0) return (-1); #ifdef VMS StrAllocCopy(curloc, "/sys$login"); #else StrAllocCopy(curloc, HTfullURL_toFile(directory)); LYTrimPathSep(curloc); #endif /* VMS */ LYLocalFileToURL(newfile, tempfile); LYRegisterUIPage(*newfile, UIP_UPLOAD_OPTIONS); BeginInternalPage(fp0, UPLOAD_OPTIONS_TITLE, UPLOAD_OPTIONS_HELP); fprintf(fp0, "
\n");
    fprintf(fp0, "   %s %s\n", gettext("Upload To:"), curloc);
    fprintf(fp0, "\n%s\n", gettext("Upload options:"));

    if (uploaders != NULL) {
	for (count = 0, cur_upload = uploaders;
	     cur_upload != NULL;
	     cur_upload = cur_upload->next, count++) {
	    fprintf(fp0, "   ",
		    count, curloc);
	    fprintf(fp0, "%s", (cur_upload->name ?
				cur_upload->name : gettext("No Name Given")));
	    fprintf(fp0, "\n");
	}
    } else {
	fprintf(fp0, "   <NONE>\n");
    }

    fprintf(fp0, "
\n"); EndInternalPage(fp0); LYCloseTempFP(fp0); LYforce_no_cache = TRUE; FREE(curloc); return (0); }