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Code Issues Releases Wiki Activity
c39f204352
curl/lib/ftplistparser.c
Daniel Stenberg ff50fe0348
strtoofft: reduce integer overflow risks globally 
... make sure we bail out on overflows.

Reported-by: Brian Carpenter
Closes #1758
2017-08-14 23:33:41 +02:00

1017 lines
31 KiB
C
Raw Blame History

/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
/**
* Now implemented:
*
* 1) Unix version 1
* drwxr-xr-x 1 user01 ftp 512 Jan 29 23:32 prog
* 2) Unix version 2
* drwxr-xr-x 1 user01 ftp 512 Jan 29 1997 prog
* 3) Unix version 3
* drwxr-xr-x 1 1 1 512 Jan 29 23:32 prog
* 4) Unix symlink
* lrwxr-xr-x 1 user01 ftp 512 Jan 29 23:32 prog -> prog2000
* 5) DOS style
* 01-29-97 11:32PM <DIR> prog
*/
#include "curl_setup.h"
#ifndef CURL_DISABLE_FTP
#include <curl/curl.h>
#include "urldata.h"
#include "fileinfo.h"
#include "llist.h"
#include "strtoofft.h"
#include "ftp.h"
#include "ftplistparser.h"
#include "curl_fnmatch.h"
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
/* allocs buffer which will contain one line of LIST command response */
#define FTP_BUFFER_ALLOCSIZE 160
typedef enum {
PL_UNIX_TOTALSIZE = 0,
PL_UNIX_FILETYPE,
PL_UNIX_PERMISSION,
PL_UNIX_HLINKS,
PL_UNIX_USER,
PL_UNIX_GROUP,
PL_UNIX_SIZE,
PL_UNIX_TIME,
PL_UNIX_FILENAME,
PL_UNIX_SYMLINK
} pl_unix_mainstate;
typedef union {
enum {
PL_UNIX_TOTALSIZE_INIT = 0,
PL_UNIX_TOTALSIZE_READING
} total_dirsize;
enum {
PL_UNIX_HLINKS_PRESPACE = 0,
PL_UNIX_HLINKS_NUMBER
} hlinks;
enum {
PL_UNIX_USER_PRESPACE = 0,
PL_UNIX_USER_PARSING
} user;
enum {
PL_UNIX_GROUP_PRESPACE = 0,
PL_UNIX_GROUP_NAME
} group;
enum {
PL_UNIX_SIZE_PRESPACE = 0,
PL_UNIX_SIZE_NUMBER
} size;
enum {
PL_UNIX_TIME_PREPART1 = 0,
PL_UNIX_TIME_PART1,
PL_UNIX_TIME_PREPART2,
PL_UNIX_TIME_PART2,
PL_UNIX_TIME_PREPART3,
PL_UNIX_TIME_PART3
} time;
enum {
PL_UNIX_FILENAME_PRESPACE = 0,
PL_UNIX_FILENAME_NAME,
PL_UNIX_FILENAME_WINDOWSEOL
} filename;
enum {
PL_UNIX_SYMLINK_PRESPACE = 0,
PL_UNIX_SYMLINK_NAME,
PL_UNIX_SYMLINK_PRETARGET1,
PL_UNIX_SYMLINK_PRETARGET2,
PL_UNIX_SYMLINK_PRETARGET3,
PL_UNIX_SYMLINK_PRETARGET4,
PL_UNIX_SYMLINK_TARGET,
PL_UNIX_SYMLINK_WINDOWSEOL
} symlink;
} pl_unix_substate;
typedef enum {
PL_WINNT_DATE = 0,
PL_WINNT_TIME,
PL_WINNT_DIRORSIZE,
PL_WINNT_FILENAME
} pl_winNT_mainstate;
typedef union {
enum {
PL_WINNT_TIME_PRESPACE = 0,
PL_WINNT_TIME_TIME
} time;
enum {
PL_WINNT_DIRORSIZE_PRESPACE = 0,
PL_WINNT_DIRORSIZE_CONTENT
} dirorsize;
enum {
PL_WINNT_FILENAME_PRESPACE = 0,
PL_WINNT_FILENAME_CONTENT,
PL_WINNT_FILENAME_WINEOL
} filename;
} pl_winNT_substate;
/* This struct is used in wildcard downloading - for parsing LIST response */
struct ftp_parselist_data {
enum {
OS_TYPE_UNKNOWN = 0,
OS_TYPE_UNIX,
OS_TYPE_WIN_NT
} os_type;
union {
struct {
pl_unix_mainstate main;
pl_unix_substate sub;
} UNIX;
struct {
pl_winNT_mainstate main;
pl_winNT_substate sub;
} NT;
} state;
CURLcode error;
struct fileinfo *file_data;
unsigned int item_length;
size_t item_offset;
struct {
size_t filename;
size_t user;
size_t group;
size_t time;
size_t perm;
size_t symlink_target;
} offsets;
};
struct ftp_parselist_data *Curl_ftp_parselist_data_alloc(void)
{
return calloc(1, sizeof(struct ftp_parselist_data));
}
void Curl_ftp_parselist_data_free(struct ftp_parselist_data **pl_data)
{
free(*pl_data);
*pl_data = NULL;
}
CURLcode Curl_ftp_parselist_geterror(struct ftp_parselist_data *pl_data)
{
return pl_data->error;
}
#define FTP_LP_MALFORMATED_PERM 0x01000000
static int ftp_pl_get_permission(const char *str)
{
int permissions = 0;
/* USER */
if(str[0] == 'r')
permissions |= 1 << 8;
else if(str[0] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
if(str[1] == 'w')
permissions |= 1 << 7;
else if(str[1] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
if(str[2] == 'x')
permissions |= 1 << 6;
else if(str[2] == 's') {
permissions |= 1 << 6;
permissions |= 1 << 11;
}
else if(str[2] == 'S')
permissions |= 1 << 11;
else if(str[2] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
/* GROUP */
if(str[3] == 'r')
permissions |= 1 << 5;
else if(str[3] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
if(str[4] == 'w')
permissions |= 1 << 4;
else if(str[4] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
if(str[5] == 'x')
permissions |= 1 << 3;
else if(str[5] == 's') {
permissions |= 1 << 3;
permissions |= 1 << 10;
}
else if(str[5] == 'S')
permissions |= 1 << 10;
else if(str[5] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
/* others */
if(str[6] == 'r')
permissions |= 1 << 2;
else if(str[6] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
if(str[7] == 'w')
permissions |= 1 << 1;
else if(str[7] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
if(str[8] == 'x')
permissions |= 1;
else if(str[8] == 't') {
permissions |= 1;
permissions |= 1 << 9;
}
else if(str[8] == 'T')
permissions |= 1 << 9;
else if(str[8] != '-')
permissions |= FTP_LP_MALFORMATED_PERM;
return permissions;
}
static void PL_ERROR(struct connectdata *conn, CURLcode err)
{
struct ftp_wc_tmpdata *tmpdata = conn->data->wildcard.tmp;
struct ftp_parselist_data *parser = tmpdata->parser;
if(parser->file_data)
Curl_fileinfo_dtor(NULL, parser->file_data);
parser->file_data = NULL;
parser->error = err;
}
static CURLcode ftp_pl_insert_finfo(struct connectdata *conn,
struct fileinfo *infop)
{
curl_fnmatch_callback compare;
struct WildcardData *wc = &conn->data->wildcard;
struct ftp_wc_tmpdata *tmpdata = wc->tmp;
struct curl_llist *llist = &wc->filelist;
struct ftp_parselist_data *parser = tmpdata->parser;
bool add = TRUE;
struct curl_fileinfo *finfo = &infop->info;
/* move finfo pointers to b_data */
char *str = finfo->b_data;
finfo->filename = str + parser->offsets.filename;
finfo->strings.group = parser->offsets.group ?
str + parser->offsets.group : NULL;
finfo->strings.perm = parser->offsets.perm ?
str + parser->offsets.perm : NULL;
finfo->strings.target = parser->offsets.symlink_target ?
str + parser->offsets.symlink_target : NULL;
finfo->strings.time = str + parser->offsets.time;
finfo->strings.user = parser->offsets.user ?
str + parser->offsets.user : NULL;
/* get correct fnmatch callback */
compare = conn->data->set.fnmatch;
if(!compare)
compare = Curl_fnmatch;
/* filter pattern-corresponding filenames */
if(compare(conn->data->set.fnmatch_data, wc->pattern,
finfo->filename) == 0) {
/* discard symlink which is containing multiple " -> " */
if((finfo->filetype == CURLFILETYPE_SYMLINK) && finfo->strings.target &&
(strstr(finfo->strings.target, " -> "))) {
add = FALSE;
}
}
else {
add = FALSE;
}
if(add) {
Curl_llist_insert_next(llist, llist->tail, finfo, &infop->list);
}
else {
Curl_fileinfo_dtor(NULL, finfo);
}
tmpdata->parser->file_data = NULL;
return CURLE_OK;
}
size_t Curl_ftp_parselist(char *buffer, size_t size, size_t nmemb,
void *connptr)
{
size_t bufflen = size*nmemb;
struct connectdata *conn = (struct connectdata *)connptr;
struct ftp_wc_tmpdata *tmpdata = conn->data->wildcard.tmp;
struct ftp_parselist_data *parser = tmpdata->parser;
struct fileinfo *infop;
struct curl_fileinfo *finfo;
unsigned long i = 0;
CURLcode result;
if(parser->error) { /* error in previous call */
/* scenario:
* 1. call => OK..
* 2. call => OUT_OF_MEMORY (or other error)
* 3. (last) call => is skipped RIGHT HERE and the error is hadled later
* in wc_statemach()
*/
return bufflen;
}
if(parser->os_type == OS_TYPE_UNKNOWN && bufflen > 0) {
/* considering info about FILE response format */
parser->os_type = (buffer[0] >= '0' && buffer[0] <= '9') ?
OS_TYPE_WIN_NT : OS_TYPE_UNIX;
}
while(i < bufflen) { /* FSM */
char c = buffer[i];
if(!parser->file_data) { /* tmp file data is not allocated yet */
parser->file_data = Curl_fileinfo_alloc();
if(!parser->file_data) {
parser->error = CURLE_OUT_OF_MEMORY;
return bufflen;
}
parser->file_data->info.b_data = malloc(FTP_BUFFER_ALLOCSIZE);
if(!parser->file_data->info.b_data) {
PL_ERROR(conn, CURLE_OUT_OF_MEMORY);
return bufflen;
}
parser->file_data->info.b_size = FTP_BUFFER_ALLOCSIZE;
parser->item_offset = 0;
parser->item_length = 0;
}
infop = parser->file_data;
finfo = &infop->info;
finfo->b_data[finfo->b_used++] = c;
if(finfo->b_used >= finfo->b_size - 1) {
/* if it is important, extend buffer space for file data */
char *tmp = realloc(finfo->b_data,
finfo->b_size + FTP_BUFFER_ALLOCSIZE);
if(tmp) {
finfo->b_size += FTP_BUFFER_ALLOCSIZE;
finfo->b_data = tmp;
}
else {
Curl_fileinfo_dtor(NULL, parser->file_data);
parser->file_data = NULL;
parser->error = CURLE_OUT_OF_MEMORY;
PL_ERROR(conn, CURLE_OUT_OF_MEMORY);
return bufflen;
}
}
switch(parser->os_type) {
case OS_TYPE_UNIX:
switch(parser->state.UNIX.main) {
case PL_UNIX_TOTALSIZE:
switch(parser->state.UNIX.sub.total_dirsize) {
case PL_UNIX_TOTALSIZE_INIT:
if(c == 't') {
parser->state.UNIX.sub.total_dirsize = PL_UNIX_TOTALSIZE_READING;
parser->item_length++;
}
else {
parser->state.UNIX.main = PL_UNIX_FILETYPE;
/* start FSM again not considering size of directory */
finfo->b_used = 0;
i--;
}
break;
case PL_UNIX_TOTALSIZE_READING:
parser->item_length++;
if(c == '\r') {
parser->item_length--;
finfo->b_used--;
}
else if(c == '\n') {
finfo->b_data[parser->item_length - 1] = 0;
if(strncmp("total ", finfo->b_data, 6) == 0) {
char *endptr = finfo->b_data+6;
/* here we can deal with directory size, pass the leading white
spaces and then the digits */
while(ISSPACE(*endptr))
endptr++;
while(ISDIGIT(*endptr))
endptr++;
if(*endptr != 0) {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
parser->state.UNIX.main = PL_UNIX_FILETYPE;
finfo->b_used = 0;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
break;
}
break;
case PL_UNIX_FILETYPE:
switch(c) {
case '-':
finfo->filetype = CURLFILETYPE_FILE;
break;
case 'd':
finfo->filetype = CURLFILETYPE_DIRECTORY;
break;
case 'l':
finfo->filetype = CURLFILETYPE_SYMLINK;
break;
case 'p':
finfo->filetype = CURLFILETYPE_NAMEDPIPE;
break;
case 's':
finfo->filetype = CURLFILETYPE_SOCKET;
break;
case 'c':
finfo->filetype = CURLFILETYPE_DEVICE_CHAR;
break;
case 'b':
finfo->filetype = CURLFILETYPE_DEVICE_BLOCK;
break;
case 'D':
finfo->filetype = CURLFILETYPE_DOOR;
break;
default:
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
parser->state.UNIX.main = PL_UNIX_PERMISSION;
parser->item_length = 0;
parser->item_offset = 1;
break;
case PL_UNIX_PERMISSION:
parser->item_length++;
if(parser->item_length <= 9) {
if(!strchr("rwx-tTsS", c)) {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
else if(parser->item_length == 10) {
unsigned int perm;
if(c != ' ') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
finfo->b_data[10] = 0; /* terminate permissions */
perm = ftp_pl_get_permission(finfo->b_data + parser->item_offset);
if(perm & FTP_LP_MALFORMATED_PERM) {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
parser->file_data->info.flags |= CURLFINFOFLAG_KNOWN_PERM;
parser->file_data->info.perm = perm;
parser->offsets.perm = parser->item_offset;
parser->item_length = 0;
parser->state.UNIX.main = PL_UNIX_HLINKS;
parser->state.UNIX.sub.hlinks = PL_UNIX_HLINKS_PRESPACE;
}
break;
case PL_UNIX_HLINKS:
switch(parser->state.UNIX.sub.hlinks) {
case PL_UNIX_HLINKS_PRESPACE:
if(c != ' ') {
if(c >= '0' && c <= '9') {
parser->item_offset = finfo->b_used - 1;
parser->item_length = 1;
parser->state.UNIX.sub.hlinks = PL_UNIX_HLINKS_NUMBER;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
break;
case PL_UNIX_HLINKS_NUMBER:
parser->item_length ++;
if(c == ' ') {
char *p;
long int hlinks;
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
hlinks = strtol(finfo->b_data + parser->item_offset, &p, 10);
if(p[0] == '\0' && hlinks != LONG_MAX && hlinks != LONG_MIN) {
parser->file_data->info.flags |= CURLFINFOFLAG_KNOWN_HLINKCOUNT;
parser->file_data->info.hardlinks = hlinks;
}
parser->item_length = 0;
parser->item_offset = 0;
parser->state.UNIX.main = PL_UNIX_USER;
parser->state.UNIX.sub.user = PL_UNIX_USER_PRESPACE;
}
else if(c < '0' || c > '9') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
}
break;
case PL_UNIX_USER:
switch(parser->state.UNIX.sub.user) {
case PL_UNIX_USER_PRESPACE:
if(c != ' ') {
parser->item_offset = finfo->b_used - 1;
parser->item_length = 1;
parser->state.UNIX.sub.user = PL_UNIX_USER_PARSING;
}
break;
case PL_UNIX_USER_PARSING:
parser->item_length++;
if(c == ' ') {
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
parser->offsets.user = parser->item_offset;
parser->state.UNIX.main = PL_UNIX_GROUP;
parser->state.UNIX.sub.group = PL_UNIX_GROUP_PRESPACE;
parser->item_offset = 0;
parser->item_length = 0;
}
break;
}
break;
case PL_UNIX_GROUP:
switch(parser->state.UNIX.sub.group) {
case PL_UNIX_GROUP_PRESPACE:
if(c != ' ') {
parser->item_offset = finfo->b_used - 1;
parser->item_length = 1;
parser->state.UNIX.sub.group = PL_UNIX_GROUP_NAME;
}
break;
case PL_UNIX_GROUP_NAME:
parser->item_length++;
if(c == ' ') {
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
parser->offsets.group = parser->item_offset;
parser->state.UNIX.main = PL_UNIX_SIZE;
parser->state.UNIX.sub.size = PL_UNIX_SIZE_PRESPACE;
parser->item_offset = 0;
parser->item_length = 0;
}
break;
}
break;
case PL_UNIX_SIZE:
switch(parser->state.UNIX.sub.size) {
case PL_UNIX_SIZE_PRESPACE:
if(c != ' ') {
if(c >= '0' && c <= '9') {
parser->item_offset = finfo->b_used - 1;
parser->item_length = 1;
parser->state.UNIX.sub.size = PL_UNIX_SIZE_NUMBER;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
break;
case PL_UNIX_SIZE_NUMBER:
parser->item_length++;
if(c == ' ') {
char *p;
curl_off_t fsize;
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
if(!curlx_strtoofft(finfo->b_data+parser->item_offset,
&p, 10, &fsize)) {
if(p[0] == '\0' && fsize != CURL_OFF_T_MAX &&
fsize != CURL_OFF_T_MIN) {
parser->file_data->info.flags |= CURLFINFOFLAG_KNOWN_SIZE;
parser->file_data->info.size = fsize;
}
parser->item_length = 0;
parser->item_offset = 0;
parser->state.UNIX.main = PL_UNIX_TIME;
parser->state.UNIX.sub.time = PL_UNIX_TIME_PREPART1;
}
}
else if(!ISDIGIT(c)) {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
}
break;
case PL_UNIX_TIME:
switch(parser->state.UNIX.sub.time) {
case PL_UNIX_TIME_PREPART1:
if(c != ' ') {
if(ISALNUM(c)) {
parser->item_offset = finfo->b_used -1;
parser->item_length = 1;
parser->state.UNIX.sub.time = PL_UNIX_TIME_PART1;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
break;
case PL_UNIX_TIME_PART1:
parser->item_length++;
if(c == ' ') {
parser->state.UNIX.sub.time = PL_UNIX_TIME_PREPART2;
}
else if(!ISALNUM(c) && c != '.') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
case PL_UNIX_TIME_PREPART2:
parser->item_length++;
if(c != ' ') {
if(ISALNUM(c)) {
parser->state.UNIX.sub.time = PL_UNIX_TIME_PART2;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
break;
case PL_UNIX_TIME_PART2:
parser->item_length++;
if(c == ' ') {
parser->state.UNIX.sub.time = PL_UNIX_TIME_PREPART3;
}
else if(!ISALNUM(c) && c != '.') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
case PL_UNIX_TIME_PREPART3:
parser->item_length++;
if(c != ' ') {
if(ISALNUM(c)) {
parser->state.UNIX.sub.time = PL_UNIX_TIME_PART3;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
break;
case PL_UNIX_TIME_PART3:
parser->item_length++;
if(c == ' ') {
finfo->b_data[parser->item_offset + parser->item_length -1] = 0;
parser->offsets.time = parser->item_offset;
/*
if(ftp_pl_gettime(parser, finfo->b_data + parser->item_offset)) {
parser->file_data->flags |= CURLFINFOFLAG_KNOWN_TIME;
}
*/
if(finfo->filetype == CURLFILETYPE_SYMLINK) {
parser->state.UNIX.main = PL_UNIX_SYMLINK;
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_PRESPACE;
}
else {
parser->state.UNIX.main = PL_UNIX_FILENAME;
parser->state.UNIX.sub.filename = PL_UNIX_FILENAME_PRESPACE;
}
}
else if(!ISALNUM(c) && c != '.' && c != ':') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
}
break;
case PL_UNIX_FILENAME:
switch(parser->state.UNIX.sub.filename) {
case PL_UNIX_FILENAME_PRESPACE:
if(c != ' ') {
parser->item_offset = finfo->b_used - 1;
parser->item_length = 1;
parser->state.UNIX.sub.filename = PL_UNIX_FILENAME_NAME;
}
break;
case PL_UNIX_FILENAME_NAME:
parser->item_length++;
if(c == '\r') {
parser->state.UNIX.sub.filename = PL_UNIX_FILENAME_WINDOWSEOL;
}
else if(c == '\n') {
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
parser->offsets.filename = parser->item_offset;
parser->state.UNIX.main = PL_UNIX_FILETYPE;
result = ftp_pl_insert_finfo(conn, infop);
if(result) {
PL_ERROR(conn, result);
return bufflen;
}
}
break;
case PL_UNIX_FILENAME_WINDOWSEOL:
if(c == '\n') {
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
parser->offsets.filename = parser->item_offset;
parser->state.UNIX.main = PL_UNIX_FILETYPE;
result = ftp_pl_insert_finfo(conn, infop);
if(result) {
PL_ERROR(conn, result);
return bufflen;
}
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
}
break;
case PL_UNIX_SYMLINK:
switch(parser->state.UNIX.sub.symlink) {
case PL_UNIX_SYMLINK_PRESPACE:
if(c != ' ') {
parser->item_offset = finfo->b_used - 1;
parser->item_length = 1;
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_NAME;
}
break;
case PL_UNIX_SYMLINK_NAME:
parser->item_length++;
if(c == ' ') {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_PRETARGET1;
}
else if(c == '\r' || c == '\n') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
case PL_UNIX_SYMLINK_PRETARGET1:
parser->item_length++;
if(c == '-') {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_PRETARGET2;
}
else if(c == '\r' || c == '\n') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
else {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_NAME;
}
break;
case PL_UNIX_SYMLINK_PRETARGET2:
parser->item_length++;
if(c == '>') {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_PRETARGET3;
}
else if(c == '\r' || c == '\n') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
else {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_NAME;
}
break;
case PL_UNIX_SYMLINK_PRETARGET3:
parser->item_length++;
if(c == ' ') {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_PRETARGET4;
/* now place where is symlink following */
finfo->b_data[parser->item_offset + parser->item_length - 4] = 0;
parser->offsets.filename = parser->item_offset;
parser->item_length = 0;
parser->item_offset = 0;
}
else if(c == '\r' || c == '\n') {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
else {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_NAME;
}
break;
case PL_UNIX_SYMLINK_PRETARGET4:
if(c != '\r' && c != '\n') {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_TARGET;
parser->item_offset = finfo->b_used - 1;
parser->item_length = 1;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
case PL_UNIX_SYMLINK_TARGET:
parser->item_length++;
if(c == '\r') {
parser->state.UNIX.sub.symlink = PL_UNIX_SYMLINK_WINDOWSEOL;
}
else if(c == '\n') {
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
parser->offsets.symlink_target = parser->item_offset;
result = ftp_pl_insert_finfo(conn, infop);
if(result) {
PL_ERROR(conn, result);
return bufflen;
}
parser->state.UNIX.main = PL_UNIX_FILETYPE;
}
break;
case PL_UNIX_SYMLINK_WINDOWSEOL:
if(c == '\n') {
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
parser->offsets.symlink_target = parser->item_offset;
result = ftp_pl_insert_finfo(conn, infop);
if(result) {
PL_ERROR(conn, result);
return bufflen;
}
parser->state.UNIX.main = PL_UNIX_FILETYPE;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
}
break;
}
break;
case OS_TYPE_WIN_NT:
switch(parser->state.NT.main) {
case PL_WINNT_DATE:
parser->item_length++;
if(parser->item_length < 9) {
if(!strchr("0123456789-", c)) { /* only simple control */
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
else if(parser->item_length == 9) {
if(c == ' ') {
parser->state.NT.main = PL_WINNT_TIME;
parser->state.NT.sub.time = PL_WINNT_TIME_PRESPACE;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
case PL_WINNT_TIME:
parser->item_length++;
switch(parser->state.NT.sub.time) {
case PL_WINNT_TIME_PRESPACE:
if(!ISSPACE(c)) {
parser->state.NT.sub.time = PL_WINNT_TIME_TIME;
}
break;
case PL_WINNT_TIME_TIME:
if(c == ' ') {
parser->offsets.time = parser->item_offset;
finfo->b_data[parser->item_offset + parser->item_length -1] = 0;
parser->state.NT.main = PL_WINNT_DIRORSIZE;
parser->state.NT.sub.dirorsize = PL_WINNT_DIRORSIZE_PRESPACE;
parser->item_length = 0;
}
else if(!strchr("APM0123456789:", c)) {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
}
break;
case PL_WINNT_DIRORSIZE:
switch(parser->state.NT.sub.dirorsize) {
case PL_WINNT_DIRORSIZE_PRESPACE:
if(c == ' ') {
}
else {
parser->item_offset = finfo->b_used - 1;
parser->item_length = 1;
parser->state.NT.sub.dirorsize = PL_WINNT_DIRORSIZE_CONTENT;
}
break;
case PL_WINNT_DIRORSIZE_CONTENT:
parser->item_length ++;
if(c == ' ') {
finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
if(strcmp("<DIR>", finfo->b_data + parser->item_offset) == 0) {
finfo->filetype = CURLFILETYPE_DIRECTORY;
finfo->size = 0;
}
else {
char *endptr;
if(curlx_strtoofft(finfo->b_data +
parser->item_offset,
&endptr, 10, &finfo->size)) {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
/* correct file type */
parser->file_data->info.filetype = CURLFILETYPE_FILE;
}
parser->file_data->info.flags |= CURLFINFOFLAG_KNOWN_SIZE;
parser->item_length = 0;
parser->state.NT.main = PL_WINNT_FILENAME;
parser->state.NT.sub.filename = PL_WINNT_FILENAME_PRESPACE;
}
break;
}
break;
case PL_WINNT_FILENAME:
switch(parser->state.NT.sub.filename) {
case PL_WINNT_FILENAME_PRESPACE:
if(c != ' ') {
parser->item_offset = finfo->b_used -1;
parser->item_length = 1;
parser->state.NT.sub.filename = PL_WINNT_FILENAME_CONTENT;
}
break;
case PL_WINNT_FILENAME_CONTENT:
parser->item_length++;
if(c == '\r') {
parser->state.NT.sub.filename = PL_WINNT_FILENAME_WINEOL;
finfo->b_data[finfo->b_used - 1] = 0;
}
else if(c == '\n') {
parser->offsets.filename = parser->item_offset;
finfo->b_data[finfo->b_used - 1] = 0;
parser->offsets.filename = parser->item_offset;
result = ftp_pl_insert_finfo(conn, infop);
if(result) {
PL_ERROR(conn, result);
return bufflen;
}
parser->state.NT.main = PL_WINNT_DATE;
parser->state.NT.sub.filename = PL_WINNT_FILENAME_PRESPACE;
}
break;
case PL_WINNT_FILENAME_WINEOL:
if(c == '\n') {
parser->offsets.filename = parser->item_offset;
result = ftp_pl_insert_finfo(conn, infop);
if(result) {
PL_ERROR(conn, result);
return bufflen;
}
parser->state.NT.main = PL_WINNT_DATE;
parser->state.NT.sub.filename = PL_WINNT_FILENAME_PRESPACE;
}
else {
PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
return bufflen;
}
break;
}
break;
}
break;
default:
return bufflen + 1;
}
i++;
}
return bufflen;
}
#endif /* CURL_DISABLE_FTP */
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