142 lines
2.9 KiB
C
142 lines
2.9 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2011 Intel Corporation; author: H. Peter Anvin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston MA 02110-1301, USA; either version 2 of the License, or
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* (at your option) any later version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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/*
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* ftp_readdir.c
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*/
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#include <inttypes.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <dprintf.h>
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#include "pxe.h"
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static int dirtype(char type)
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{
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switch (type) {
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case 'f':
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return DT_FIFO;
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case 'c':
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return DT_CHR;
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case 'd':
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return DT_DIR;
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case 'b':
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return DT_BLK;
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case '-':
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case '0' ... '9': /* Some DOS FTP stacks */
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return DT_REG;
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case 'l':
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return DT_LNK;
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case 's':
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return DT_SOCK;
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default:
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return DT_UNKNOWN;
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}
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}
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int ftp_readdir(struct inode *inode, struct dirent *dirent)
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{
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char bufs[2][FILENAME_MAX + 1];
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int nbuf = 0;
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char *buf = bufs[nbuf];
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char *p = buf;
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char *name = NULL;
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char type;
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int c;
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int dt;
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bool was_cr = false;
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bool first = true;
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for (;;) {
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type = 0;
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for (;;) {
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c = pxe_getc(inode);
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if (c == -1)
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return -1; /* Nothing else there */
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if (c == '\r') {
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was_cr = true;
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continue;
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}
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if (was_cr) {
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if (c == '\n') {
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if (!name) {
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*p = '\0';
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name = buf;
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}
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break; /* End of line */
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}
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else if (c == '\0')
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c = '\r';
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}
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was_cr = false;
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if (c == ' ' || c == '\t') {
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if (!name) {
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*p = '\0';
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if (first) {
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if (p == buf) {
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/* Name started with whitespace - skip line */
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name = buf;
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} else if ((p = strchr(buf, ';'))) {
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/* VMS/Multinet format */
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if (p > buf+4 && !memcmp(p-4, ".DIR", 4)) {
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type = 'd';
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p -= 4;
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} else {
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type = 'f';
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}
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*p = '\0';
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name = buf;
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} else {
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type = buf[0];
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}
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first = false;
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} else {
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/* Not the first word */
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if ((type >= '0' && type <= '9') &&
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!strcmp(buf, "<DIR>")) {
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/* Some DOS FTP servers */
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type = 'd';
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} else if (type == 'l' && !strcmp(buf, "->")) {
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/* The name was the previous word */
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name = bufs[nbuf ^ 1];
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}
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}
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nbuf ^= 1;
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p = buf = bufs[nbuf];
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}
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} else {
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if (!name && p < buf + FILENAME_MAX)
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*p++ = c;
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}
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}
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dt = dirtype(type);
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if (dt != DT_UNKNOWN) {
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size_t len = strlen(name);
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if (len <= NAME_MAX) {
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dirent->d_type = dt;
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dirent->d_ino = 0; /* Not applicable */
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dirent->d_off = 0; /* Not applicable */
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dirent->d_reclen = offsetof(struct dirent, d_name) + len+1;
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memcpy(dirent->d_name, name, len+1);
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return 0;
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}
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}
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/* Otherwise try the next line... */
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}
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}
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