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Diffstat (limited to '')
| -rw-r--r-- | src/LYUpload.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/src/LYUpload.c b/src/LYUpload.c new file mode 100644 index 0000000..a83a103 --- /dev/null +++ b/src/LYUpload.c @@ -0,0 +1,221 @@ +/* + * $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 <HTUtils.h> +#include <HTFile.h> +#include <HTParse.h> +#include <HTAlert.h> +#include <LYCurses.h> +#include <LYUtils.h> +#include <LYGlobalDefs.h> +#include <LYStrings.h> +#include <LYClean.h> +#include <LYGetFile.h> +#include <LYUpload.h> +#include <LYLocal.h> + +#include <LYexit.h> +#include <LYLeaks.h> + +#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=<STRING> + */ +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=<STRING> + */ +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, "<pre>\n"); + fprintf(fp0, " <em>%s</em> %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, " <a href=\"LYNXDIRED://UPLOAD=%d/TO=%s\">", + count, curloc); + fprintf(fp0, "%s", (cur_upload->name ? + cur_upload->name : gettext("No Name Given"))); + fprintf(fp0, "</a>\n"); + } + } else { + fprintf(fp0, " <NONE>\n"); + } + + fprintf(fp0, "</pre>\n"); + EndInternalPage(fp0); + LYCloseTempFP(fp0); + + LYforce_no_cache = TRUE; + FREE(curloc); + + return (0); +} |