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10b195d3b0
curl/lib/ftplistparser.c
Daniel Stenberg 10b195d3b0
Revert "ftplistparser: keep state between invokes" 
This reverts commit 8fb78f9ddc.

Unfortunately this fix introduces memory leaks I've not been able to fix
in several days. Reverting this for now to get the leaks fixed.
2018-04-23 07:51:11 +02:00

1019 lines
30 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"
#include "multiif.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 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 */
Curl_set_in_callback(conn->data, true);
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;
}
Curl_set_in_callback(conn->data, 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;
size_t retsize = bufflen;
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()
*/
goto fail;
}
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;
goto fail;
}
parser->file_data->info.b_data = malloc(FTP_BUFFER_ALLOCSIZE);
if(!parser->file_data->info.b_data) {
parser->error = CURLE_OUT_OF_MEMORY;
goto fail;
}
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;
goto fail;
}
}
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) {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
parser->state.UNIX.main = PL_UNIX_FILETYPE;
finfo->b_used = 0;
}
else {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
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:
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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)) {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
else if(parser->item_length == 10) {
unsigned int perm;
if(c != ' ') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
finfo->b_data[10] = 0; /* terminate permissions */
perm = ftp_pl_get_permission(finfo->b_data + parser->item_offset);
if(perm & FTP_LP_MALFORMATED_PERM) {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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 {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
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') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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 {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
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)) {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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 {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
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 != '.') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
break;
case PL_UNIX_TIME_PREPART2:
parser->item_length++;
if(c != ' ') {
if(ISALNUM(c)) {
parser->state.UNIX.sub.time = PL_UNIX_TIME_PART2;
}
else {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
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 != '.') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
break;
case PL_UNIX_TIME_PREPART3:
parser->item_length++;
if(c != ' ') {
if(ISALNUM(c)) {
parser->state.UNIX.sub.time = PL_UNIX_TIME_PART3;
}
else {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
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 != ':') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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) {
parser->error = result;
goto fail;
}
}
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) {
parser->error = result;
goto fail;
}
}
else {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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') {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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 {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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) {
parser->error = result;
goto fail;
}
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) {
parser->error = result;
goto fail;
}
parser->state.UNIX.main = PL_UNIX_FILETYPE;
}
else {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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 */
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
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 {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
}
else {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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)) {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
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)) {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
/* 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) {
parser->error = result;
goto fail;
}
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) {
parser->error = result;
goto fail;
}
parser->state.NT.main = PL_WINNT_DATE;
parser->state.NT.sub.filename = PL_WINNT_FILENAME_PRESPACE;
}
else {
parser->error = CURLE_FTP_BAD_FILE_LIST;
goto fail;
}
break;
}
break;
}
break;
default:
retsize = bufflen + 1;
goto fail;
}
i++;
}
fail:
/* Clean up any allocated memory. */
if(parser->file_data) {
Curl_fileinfo_dtor(NULL, parser->file_data);
parser->file_data = NULL;
}
return retsize;
}
#endif /* CURL_DISABLE_FTP */
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