mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-12-13 23:08:53 +00:00
Now supports GNU style long filenames.
If no filenames are specifed to be (extracted/listed) it will act on all files in the archive (i dont think the old version did this) Code is structured to better support upcoming recursive extraction functionality. The old code was a bit strange in places, dont know what i was thinking.
This commit is contained in:
Glenn L McGrath
parent
11c655295c
commit
8324b9f1aa
263
ar.c
263
ar.c
@ -5,12 +5,6 @@
|
||||
* Copyright (C) 2000 by Glenn McGrath
|
||||
* Written by Glenn McGrath <bug1@netconnect.com.au> 1 June 2000
|
||||
*
|
||||
* Modified 8 August 2000 by Glenn McGrath
|
||||
* - now uses getopt
|
||||
* - moved copySubFile function to utilities.c
|
||||
* - creates linked list of all headers
|
||||
* - easily accessable to other busybox functions
|
||||
*
|
||||
* Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
@ -27,15 +21,20 @@
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
* Last modified 25 August 2000
|
||||
* Last modified 9 September 2000
|
||||
*/
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
#include <ctype.h>
|
||||
#include <time.h>
|
||||
#include <utime.h>
|
||||
#include <unistd.h>
|
||||
#include <stdlib.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <malloc.h>
|
||||
#include "internal.h"
|
||||
|
||||
#define BLOCK_SIZE 60
|
||||
@ -45,11 +44,13 @@
|
||||
#define EXT_TO_FILE 8 /* extract contents of archive */
|
||||
#define EXT_TO_STDOUT 16 /* extract to stdout */
|
||||
|
||||
#define BB_DECLARE_EXTERN
|
||||
#define bb_need_io_error
|
||||
#include "messages.c"
|
||||
#define MAX_NAME_LENGTH 100
|
||||
|
||||
typedef struct rawArHeader { /* Byte Offset */
|
||||
//#define BB_DECLARE_EXTERN
|
||||
//#define bb_need_io_error
|
||||
//#include "messages.c"
|
||||
|
||||
typedef struct rawArHeader { /* Byte Offset */
|
||||
char name[16]; /* 0-15 */
|
||||
char date[12]; /* 16-27 */
|
||||
char uid[6], gid[6]; /* 28-39 */
|
||||
@ -59,7 +60,7 @@ typedef struct rawArHeader { /* Byte Offset */
|
||||
} rawArHeader_t;
|
||||
|
||||
typedef struct headerL {
|
||||
char name[16];
|
||||
char name[MAX_NAME_LENGTH];
|
||||
size_t size;
|
||||
uid_t uid;
|
||||
gid_t gid;
|
||||
@ -70,86 +71,162 @@ typedef struct headerL {
|
||||
} headerL_t;
|
||||
|
||||
/*
|
||||
* populate linked list with all ar file entries and offset
|
||||
* identify Ar header (magic) and set srcFd to first header entry
|
||||
*/
|
||||
static int parseArArchive(int srcFd, headerL_t *current)
|
||||
static int checkArMagic(int srcFd)
|
||||
{
|
||||
off_t lastOffset=0, thisOffset=0;
|
||||
char arVersion[8];
|
||||
rawArHeader_t rawArHeader;
|
||||
|
||||
lseek(srcFd, 0, SEEK_SET);
|
||||
if (fullRead(srcFd, arVersion, 8) <= 0) {
|
||||
errorMsg("Invalid header magic\n");
|
||||
char arMagic[8];
|
||||
if (fullRead(srcFd, arMagic, 8) != 8)
|
||||
return (FALSE);
|
||||
}
|
||||
if (strncmp(arVersion,"!<arch>",7) != 0) {
|
||||
errorMsg("This doesnt appear to be an ar archive\n");
|
||||
|
||||
if (strncmp(arMagic,"!<arch>",7) != 0)
|
||||
return(FALSE);
|
||||
}
|
||||
while (fullRead(srcFd, (char *) &rawArHeader, 60) == 60) {
|
||||
if ( (rawArHeader.fmag[0] == '`') &&
|
||||
(rawArHeader.fmag[1] == '\n')) {
|
||||
sscanf(rawArHeader.name, "%s", current->name);
|
||||
parse_mode(rawArHeader.mode, ¤t->mode);
|
||||
current->mtime = atoi(rawArHeader.date);
|
||||
current->uid = atoi(rawArHeader.uid);
|
||||
current->gid = atoi(rawArHeader.gid);
|
||||
current->size = (size_t) atoi(rawArHeader.size);
|
||||
current->offset = lseek(srcFd, 0 , SEEK_CUR);
|
||||
current->next = (headerL_t *) xmalloc(sizeof(headerL_t));
|
||||
lastOffset = lseek(srcFd, (off_t) current->size, SEEK_CUR);
|
||||
current = current->next;
|
||||
}
|
||||
else { /* GNU ar has an extra char after data */
|
||||
thisOffset=lseek(srcFd, 0, SEEK_CUR);
|
||||
if ( (thisOffset - lastOffset) > ((off_t) 61) )
|
||||
return(FALSE);
|
||||
lseek(srcFd, thisOffset - 59, SEEK_SET);
|
||||
}
|
||||
}
|
||||
return(FALSE);
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
/*
|
||||
* read, convert and check the raw ar header
|
||||
* srcFd should be pointing to the start of header prior to entry
|
||||
* srcFd will be pointing at the start of data after successful exit
|
||||
* if returns FALSE srcFd is reset to initial position
|
||||
*/
|
||||
static int readRawArHeader(int srcFd, headerL_t *header)
|
||||
{
|
||||
rawArHeader_t rawArHeader;
|
||||
off_t initialOffset;
|
||||
size_t nameLength;
|
||||
|
||||
initialOffset = lseek(srcFd, 0, SEEK_CUR);
|
||||
if (fullRead(srcFd, (char *) &rawArHeader, 60) != 60) {
|
||||
lseek(srcFd, initialOffset, SEEK_SET);
|
||||
return(FALSE);
|
||||
}
|
||||
if ((rawArHeader.fmag[0]!='`') || (rawArHeader.fmag[1]!='\n')) {
|
||||
lseek(srcFd, initialOffset, SEEK_SET);
|
||||
return(FALSE);
|
||||
}
|
||||
|
||||
strncpy(header->name, rawArHeader.name, 16);
|
||||
nameLength=strcspn(header->name, " \\");
|
||||
header->name[nameLength]='\0';
|
||||
parse_mode(rawArHeader.mode, &header->mode);
|
||||
header->mtime = atoi(rawArHeader.date);
|
||||
header->uid = atoi(rawArHeader.uid);
|
||||
header->gid = atoi(rawArHeader.gid);
|
||||
header->size = (size_t) atoi(rawArHeader.size);
|
||||
header->offset = initialOffset + (off_t) 60;
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
/*
|
||||
* get, check and correct the converted header
|
||||
*/
|
||||
static int readArEntry(int srcFd, headerL_t *newEntry)
|
||||
{
|
||||
size_t nameLength;
|
||||
|
||||
if(readRawArHeader(srcFd, newEntry)==FALSE)
|
||||
return(FALSE);
|
||||
|
||||
nameLength = strcspn(newEntry->name, "/");
|
||||
|
||||
/* handle GNU style short filenames, strip trailing '/' */
|
||||
if (nameLength > 0)
|
||||
newEntry->name[nameLength]='\0';
|
||||
|
||||
/* handle GNU style long filenames */
|
||||
if (nameLength == 0) {
|
||||
/* escape from recursive call */
|
||||
if (newEntry->name[1]=='0')
|
||||
return(TRUE);
|
||||
|
||||
/* the data section contains the real filename */
|
||||
if (newEntry->name[1]=='/') {
|
||||
char tempName[MAX_NAME_LENGTH];
|
||||
|
||||
if (newEntry->size > MAX_NAME_LENGTH)
|
||||
newEntry->size = MAX_NAME_LENGTH;
|
||||
fullRead(srcFd, tempName, newEntry->size);
|
||||
tempName[newEntry->size-3]='\0';
|
||||
|
||||
/* read the second header for this entry */
|
||||
/* be carefull, this is recursive */
|
||||
if (readArEntry(srcFd, newEntry)==FALSE)
|
||||
return(FALSE);
|
||||
|
||||
if ((newEntry->name[0]='/') && (newEntry->name[1]='0'))
|
||||
strcpy(newEntry->name, tempName);
|
||||
else {
|
||||
errorMsg("Invalid long filename\n");
|
||||
return(FALSE);
|
||||
}
|
||||
}
|
||||
}
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
/*
|
||||
* return the headerL_t struct for the specified filename
|
||||
*/
|
||||
static headerL_t *getSubFileHeader(int srcFd, const char filename[16])
|
||||
static headerL_t *getHeaders(int srcFd, headerL_t *head)
|
||||
{
|
||||
headerL_t *list;
|
||||
list = xmalloc(sizeof(headerL_t));
|
||||
int arEntry=FALSE;
|
||||
headerL_t *list;
|
||||
list = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
|
||||
parseArArchive(srcFd, list);
|
||||
while (list->next != NULL) {
|
||||
if (strncmp(list->name, filename, strlen(filename))==0)
|
||||
return(list);
|
||||
list=list->next;
|
||||
}
|
||||
return(NULL);
|
||||
if (checkArMagic(srcFd)==TRUE)
|
||||
arEntry=TRUE;
|
||||
else
|
||||
errorMsg("isnt an ar archive\n");
|
||||
|
||||
if (arEntry==TRUE) {
|
||||
while(readArEntry(srcFd, list) == TRUE) {
|
||||
list->next = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
*list->next = *head;
|
||||
*head = *list;
|
||||
|
||||
/* recursive check for sub-archives */
|
||||
lseek(srcFd, list->size, SEEK_CUR);
|
||||
/* printf("checking for sub headers\n");
|
||||
if ((subList = getHeaders(srcFd, list->next)) != NULL) {
|
||||
printf("found a sub archive !\n");
|
||||
}
|
||||
else
|
||||
printf("didnt find a sub header\n"); */
|
||||
}
|
||||
}
|
||||
|
||||
return(head);
|
||||
}
|
||||
|
||||
/*
|
||||
* find an entry in the linked list matching the filename
|
||||
*/
|
||||
static headerL_t *findEntry(headerL_t *head, const char *filename)
|
||||
{
|
||||
while(head->next != NULL) {
|
||||
if (strcmp(filename, head->name)==0)
|
||||
return(head);
|
||||
head=head->next;
|
||||
}
|
||||
return(NULL);
|
||||
}
|
||||
|
||||
/*
|
||||
* populate linked list with all ar file entries and offset
|
||||
*/
|
||||
static int displayEntry(int srcFd, const char filename[16], int funct)
|
||||
static int displayEntry(headerL_t *head, int funct)
|
||||
{
|
||||
headerL_t *file;
|
||||
|
||||
if ((file = getSubFileHeader(srcFd, filename)) == NULL)
|
||||
return(FALSE);
|
||||
if ((funct & VERBOSE) == VERBOSE) {
|
||||
printf("%s %d/%d %8d %s ", modeString(file->mode), file->uid, file->gid, file->size, timeString(file->mtime));
|
||||
printf("%s %d/%d %8d %s ", modeString(head->mode), head->uid, head->gid, head->size, timeString(head->mtime));
|
||||
}
|
||||
printf("%s\n", file->name);
|
||||
printf("%s\n", head->name);
|
||||
head = head->next;
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
static int extractAr(int srcFd, int dstFd, const char filename[16])
|
||||
static int extractAr(int srcFd, int dstFd, headerL_t *file)
|
||||
{
|
||||
headerL_t *file;
|
||||
|
||||
if ( (file = getSubFileHeader(srcFd, filename)) == NULL)
|
||||
return(FALSE);
|
||||
lseek(srcFd, file->offset, SEEK_SET);
|
||||
if (copySubFile(srcFd, dstFd, (size_t) file->size) == TRUE)
|
||||
return(TRUE);
|
||||
@ -160,7 +237,8 @@ extern int ar_main(int argc, char **argv)
|
||||
{
|
||||
int funct = 0, opt=0;
|
||||
int srcFd=0, dstFd=0;
|
||||
|
||||
headerL_t *header, *entry, *extractList;
|
||||
|
||||
while ((opt = getopt(argc, argv, "ovt:p:x:")) != -1) {
|
||||
switch (opt) {
|
||||
case 'o':
|
||||
@ -180,10 +258,6 @@ extern int ar_main(int argc, char **argv)
|
||||
funct = funct | EXT_TO_STDOUT;
|
||||
}
|
||||
/* following is common to 't','x' and 'p' */
|
||||
if (optarg == NULL) {
|
||||
printf("expected a filename\n");
|
||||
return(FALSE);
|
||||
}
|
||||
if ( (srcFd = open(optarg, O_RDONLY)) < 0) {
|
||||
errorMsg("Cannot read %s\n", optarg);
|
||||
return (FALSE);
|
||||
@ -200,17 +274,38 @@ extern int ar_main(int argc, char **argv)
|
||||
return(FALSE);
|
||||
}
|
||||
|
||||
/* find files to extract */
|
||||
if (optind<argc)
|
||||
for(; optind < argc; optind++) {
|
||||
if ( (funct & EXT_TO_FILE) == EXT_TO_FILE) {
|
||||
dstFd = open(argv[optind], O_WRONLY | O_CREAT);
|
||||
extractAr(srcFd, dstFd, argv[optind]);
|
||||
entry = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
header = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
extractList = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
|
||||
header = getHeaders(srcFd, header);
|
||||
|
||||
/* find files to extract or display */
|
||||
if (optind<argc) {
|
||||
/* only handle specified files */
|
||||
while(optind < argc) {
|
||||
if ( (entry = findEntry(header, argv[optind])) != NULL) {
|
||||
entry->next = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
*entry->next = *extractList;
|
||||
*extractList = *entry;
|
||||
}
|
||||
if ( (funct & EXT_TO_STDOUT) == EXT_TO_STDOUT)
|
||||
extractAr(srcFd, fileno(stdout), argv[optind]);
|
||||
if ( (funct & DISPLAY) == DISPLAY)
|
||||
displayEntry(srcFd, argv[optind], funct);
|
||||
optind++;
|
||||
}
|
||||
}
|
||||
else
|
||||
/* extract everything */
|
||||
extractList = header;
|
||||
|
||||
while(extractList->next != NULL) {
|
||||
if ( (funct & EXT_TO_FILE) == EXT_TO_FILE) {
|
||||
dstFd = open(extractList->name, O_WRONLY | O_CREAT);
|
||||
extractAr(srcFd, dstFd, extractList);
|
||||
}
|
||||
if ( (funct & EXT_TO_STDOUT) == EXT_TO_STDOUT)
|
||||
extractAr(srcFd, fileno(stdout), extractList);
|
||||
if ( (funct & DISPLAY) == DISPLAY)
|
||||
displayEntry(extractList, funct);
|
||||
extractList=extractList->next;
|
||||
}
|
||||
return (TRUE);
|
||||
}
|
||||
|
||||
263
archival/ar.c
263
archival/ar.c
@ -5,12 +5,6 @@
|
||||
* Copyright (C) 2000 by Glenn McGrath
|
||||
* Written by Glenn McGrath <bug1@netconnect.com.au> 1 June 2000
|
||||
*
|
||||
* Modified 8 August 2000 by Glenn McGrath
|
||||
* - now uses getopt
|
||||
* - moved copySubFile function to utilities.c
|
||||
* - creates linked list of all headers
|
||||
* - easily accessable to other busybox functions
|
||||
*
|
||||
* Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
@ -27,15 +21,20 @@
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
* Last modified 25 August 2000
|
||||
* Last modified 9 September 2000
|
||||
*/
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
#include <ctype.h>
|
||||
#include <time.h>
|
||||
#include <utime.h>
|
||||
#include <unistd.h>
|
||||
#include <stdlib.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <malloc.h>
|
||||
#include "internal.h"
|
||||
|
||||
#define BLOCK_SIZE 60
|
||||
@ -45,11 +44,13 @@
|
||||
#define EXT_TO_FILE 8 /* extract contents of archive */
|
||||
#define EXT_TO_STDOUT 16 /* extract to stdout */
|
||||
|
||||
#define BB_DECLARE_EXTERN
|
||||
#define bb_need_io_error
|
||||
#include "messages.c"
|
||||
#define MAX_NAME_LENGTH 100
|
||||
|
||||
typedef struct rawArHeader { /* Byte Offset */
|
||||
//#define BB_DECLARE_EXTERN
|
||||
//#define bb_need_io_error
|
||||
//#include "messages.c"
|
||||
|
||||
typedef struct rawArHeader { /* Byte Offset */
|
||||
char name[16]; /* 0-15 */
|
||||
char date[12]; /* 16-27 */
|
||||
char uid[6], gid[6]; /* 28-39 */
|
||||
@ -59,7 +60,7 @@ typedef struct rawArHeader { /* Byte Offset */
|
||||
} rawArHeader_t;
|
||||
|
||||
typedef struct headerL {
|
||||
char name[16];
|
||||
char name[MAX_NAME_LENGTH];
|
||||
size_t size;
|
||||
uid_t uid;
|
||||
gid_t gid;
|
||||
@ -70,86 +71,162 @@ typedef struct headerL {
|
||||
} headerL_t;
|
||||
|
||||
/*
|
||||
* populate linked list with all ar file entries and offset
|
||||
* identify Ar header (magic) and set srcFd to first header entry
|
||||
*/
|
||||
static int parseArArchive(int srcFd, headerL_t *current)
|
||||
static int checkArMagic(int srcFd)
|
||||
{
|
||||
off_t lastOffset=0, thisOffset=0;
|
||||
char arVersion[8];
|
||||
rawArHeader_t rawArHeader;
|
||||
|
||||
lseek(srcFd, 0, SEEK_SET);
|
||||
if (fullRead(srcFd, arVersion, 8) <= 0) {
|
||||
errorMsg("Invalid header magic\n");
|
||||
char arMagic[8];
|
||||
if (fullRead(srcFd, arMagic, 8) != 8)
|
||||
return (FALSE);
|
||||
}
|
||||
if (strncmp(arVersion,"!<arch>",7) != 0) {
|
||||
errorMsg("This doesnt appear to be an ar archive\n");
|
||||
|
||||
if (strncmp(arMagic,"!<arch>",7) != 0)
|
||||
return(FALSE);
|
||||
}
|
||||
while (fullRead(srcFd, (char *) &rawArHeader, 60) == 60) {
|
||||
if ( (rawArHeader.fmag[0] == '`') &&
|
||||
(rawArHeader.fmag[1] == '\n')) {
|
||||
sscanf(rawArHeader.name, "%s", current->name);
|
||||
parse_mode(rawArHeader.mode, ¤t->mode);
|
||||
current->mtime = atoi(rawArHeader.date);
|
||||
current->uid = atoi(rawArHeader.uid);
|
||||
current->gid = atoi(rawArHeader.gid);
|
||||
current->size = (size_t) atoi(rawArHeader.size);
|
||||
current->offset = lseek(srcFd, 0 , SEEK_CUR);
|
||||
current->next = (headerL_t *) xmalloc(sizeof(headerL_t));
|
||||
lastOffset = lseek(srcFd, (off_t) current->size, SEEK_CUR);
|
||||
current = current->next;
|
||||
}
|
||||
else { /* GNU ar has an extra char after data */
|
||||
thisOffset=lseek(srcFd, 0, SEEK_CUR);
|
||||
if ( (thisOffset - lastOffset) > ((off_t) 61) )
|
||||
return(FALSE);
|
||||
lseek(srcFd, thisOffset - 59, SEEK_SET);
|
||||
}
|
||||
}
|
||||
return(FALSE);
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
/*
|
||||
* read, convert and check the raw ar header
|
||||
* srcFd should be pointing to the start of header prior to entry
|
||||
* srcFd will be pointing at the start of data after successful exit
|
||||
* if returns FALSE srcFd is reset to initial position
|
||||
*/
|
||||
static int readRawArHeader(int srcFd, headerL_t *header)
|
||||
{
|
||||
rawArHeader_t rawArHeader;
|
||||
off_t initialOffset;
|
||||
size_t nameLength;
|
||||
|
||||
initialOffset = lseek(srcFd, 0, SEEK_CUR);
|
||||
if (fullRead(srcFd, (char *) &rawArHeader, 60) != 60) {
|
||||
lseek(srcFd, initialOffset, SEEK_SET);
|
||||
return(FALSE);
|
||||
}
|
||||
if ((rawArHeader.fmag[0]!='`') || (rawArHeader.fmag[1]!='\n')) {
|
||||
lseek(srcFd, initialOffset, SEEK_SET);
|
||||
return(FALSE);
|
||||
}
|
||||
|
||||
strncpy(header->name, rawArHeader.name, 16);
|
||||
nameLength=strcspn(header->name, " \\");
|
||||
header->name[nameLength]='\0';
|
||||
parse_mode(rawArHeader.mode, &header->mode);
|
||||
header->mtime = atoi(rawArHeader.date);
|
||||
header->uid = atoi(rawArHeader.uid);
|
||||
header->gid = atoi(rawArHeader.gid);
|
||||
header->size = (size_t) atoi(rawArHeader.size);
|
||||
header->offset = initialOffset + (off_t) 60;
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
/*
|
||||
* get, check and correct the converted header
|
||||
*/
|
||||
static int readArEntry(int srcFd, headerL_t *newEntry)
|
||||
{
|
||||
size_t nameLength;
|
||||
|
||||
if(readRawArHeader(srcFd, newEntry)==FALSE)
|
||||
return(FALSE);
|
||||
|
||||
nameLength = strcspn(newEntry->name, "/");
|
||||
|
||||
/* handle GNU style short filenames, strip trailing '/' */
|
||||
if (nameLength > 0)
|
||||
newEntry->name[nameLength]='\0';
|
||||
|
||||
/* handle GNU style long filenames */
|
||||
if (nameLength == 0) {
|
||||
/* escape from recursive call */
|
||||
if (newEntry->name[1]=='0')
|
||||
return(TRUE);
|
||||
|
||||
/* the data section contains the real filename */
|
||||
if (newEntry->name[1]=='/') {
|
||||
char tempName[MAX_NAME_LENGTH];
|
||||
|
||||
if (newEntry->size > MAX_NAME_LENGTH)
|
||||
newEntry->size = MAX_NAME_LENGTH;
|
||||
fullRead(srcFd, tempName, newEntry->size);
|
||||
tempName[newEntry->size-3]='\0';
|
||||
|
||||
/* read the second header for this entry */
|
||||
/* be carefull, this is recursive */
|
||||
if (readArEntry(srcFd, newEntry)==FALSE)
|
||||
return(FALSE);
|
||||
|
||||
if ((newEntry->name[0]='/') && (newEntry->name[1]='0'))
|
||||
strcpy(newEntry->name, tempName);
|
||||
else {
|
||||
errorMsg("Invalid long filename\n");
|
||||
return(FALSE);
|
||||
}
|
||||
}
|
||||
}
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
/*
|
||||
* return the headerL_t struct for the specified filename
|
||||
*/
|
||||
static headerL_t *getSubFileHeader(int srcFd, const char filename[16])
|
||||
static headerL_t *getHeaders(int srcFd, headerL_t *head)
|
||||
{
|
||||
headerL_t *list;
|
||||
list = xmalloc(sizeof(headerL_t));
|
||||
int arEntry=FALSE;
|
||||
headerL_t *list;
|
||||
list = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
|
||||
parseArArchive(srcFd, list);
|
||||
while (list->next != NULL) {
|
||||
if (strncmp(list->name, filename, strlen(filename))==0)
|
||||
return(list);
|
||||
list=list->next;
|
||||
}
|
||||
return(NULL);
|
||||
if (checkArMagic(srcFd)==TRUE)
|
||||
arEntry=TRUE;
|
||||
else
|
||||
errorMsg("isnt an ar archive\n");
|
||||
|
||||
if (arEntry==TRUE) {
|
||||
while(readArEntry(srcFd, list) == TRUE) {
|
||||
list->next = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
*list->next = *head;
|
||||
*head = *list;
|
||||
|
||||
/* recursive check for sub-archives */
|
||||
lseek(srcFd, list->size, SEEK_CUR);
|
||||
/* printf("checking for sub headers\n");
|
||||
if ((subList = getHeaders(srcFd, list->next)) != NULL) {
|
||||
printf("found a sub archive !\n");
|
||||
}
|
||||
else
|
||||
printf("didnt find a sub header\n"); */
|
||||
}
|
||||
}
|
||||
|
||||
return(head);
|
||||
}
|
||||
|
||||
/*
|
||||
* find an entry in the linked list matching the filename
|
||||
*/
|
||||
static headerL_t *findEntry(headerL_t *head, const char *filename)
|
||||
{
|
||||
while(head->next != NULL) {
|
||||
if (strcmp(filename, head->name)==0)
|
||||
return(head);
|
||||
head=head->next;
|
||||
}
|
||||
return(NULL);
|
||||
}
|
||||
|
||||
/*
|
||||
* populate linked list with all ar file entries and offset
|
||||
*/
|
||||
static int displayEntry(int srcFd, const char filename[16], int funct)
|
||||
static int displayEntry(headerL_t *head, int funct)
|
||||
{
|
||||
headerL_t *file;
|
||||
|
||||
if ((file = getSubFileHeader(srcFd, filename)) == NULL)
|
||||
return(FALSE);
|
||||
if ((funct & VERBOSE) == VERBOSE) {
|
||||
printf("%s %d/%d %8d %s ", modeString(file->mode), file->uid, file->gid, file->size, timeString(file->mtime));
|
||||
printf("%s %d/%d %8d %s ", modeString(head->mode), head->uid, head->gid, head->size, timeString(head->mtime));
|
||||
}
|
||||
printf("%s\n", file->name);
|
||||
printf("%s\n", head->name);
|
||||
head = head->next;
|
||||
return(TRUE);
|
||||
}
|
||||
|
||||
static int extractAr(int srcFd, int dstFd, const char filename[16])
|
||||
static int extractAr(int srcFd, int dstFd, headerL_t *file)
|
||||
{
|
||||
headerL_t *file;
|
||||
|
||||
if ( (file = getSubFileHeader(srcFd, filename)) == NULL)
|
||||
return(FALSE);
|
||||
lseek(srcFd, file->offset, SEEK_SET);
|
||||
if (copySubFile(srcFd, dstFd, (size_t) file->size) == TRUE)
|
||||
return(TRUE);
|
||||
@ -160,7 +237,8 @@ extern int ar_main(int argc, char **argv)
|
||||
{
|
||||
int funct = 0, opt=0;
|
||||
int srcFd=0, dstFd=0;
|
||||
|
||||
headerL_t *header, *entry, *extractList;
|
||||
|
||||
while ((opt = getopt(argc, argv, "ovt:p:x:")) != -1) {
|
||||
switch (opt) {
|
||||
case 'o':
|
||||
@ -180,10 +258,6 @@ extern int ar_main(int argc, char **argv)
|
||||
funct = funct | EXT_TO_STDOUT;
|
||||
}
|
||||
/* following is common to 't','x' and 'p' */
|
||||
if (optarg == NULL) {
|
||||
printf("expected a filename\n");
|
||||
return(FALSE);
|
||||
}
|
||||
if ( (srcFd = open(optarg, O_RDONLY)) < 0) {
|
||||
errorMsg("Cannot read %s\n", optarg);
|
||||
return (FALSE);
|
||||
@ -200,17 +274,38 @@ extern int ar_main(int argc, char **argv)
|
||||
return(FALSE);
|
||||
}
|
||||
|
||||
/* find files to extract */
|
||||
if (optind<argc)
|
||||
for(; optind < argc; optind++) {
|
||||
if ( (funct & EXT_TO_FILE) == EXT_TO_FILE) {
|
||||
dstFd = open(argv[optind], O_WRONLY | O_CREAT);
|
||||
extractAr(srcFd, dstFd, argv[optind]);
|
||||
entry = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
header = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
extractList = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
|
||||
header = getHeaders(srcFd, header);
|
||||
|
||||
/* find files to extract or display */
|
||||
if (optind<argc) {
|
||||
/* only handle specified files */
|
||||
while(optind < argc) {
|
||||
if ( (entry = findEntry(header, argv[optind])) != NULL) {
|
||||
entry->next = (headerL_t *) malloc(sizeof(headerL_t));
|
||||
*entry->next = *extractList;
|
||||
*extractList = *entry;
|
||||
}
|
||||
if ( (funct & EXT_TO_STDOUT) == EXT_TO_STDOUT)
|
||||
extractAr(srcFd, fileno(stdout), argv[optind]);
|
||||
if ( (funct & DISPLAY) == DISPLAY)
|
||||
displayEntry(srcFd, argv[optind], funct);
|
||||
optind++;
|
||||
}
|
||||
}
|
||||
else
|
||||
/* extract everything */
|
||||
extractList = header;
|
||||
|
||||
while(extractList->next != NULL) {
|
||||
if ( (funct & EXT_TO_FILE) == EXT_TO_FILE) {
|
||||
dstFd = open(extractList->name, O_WRONLY | O_CREAT);
|
||||
extractAr(srcFd, dstFd, extractList);
|
||||
}
|
||||
if ( (funct & EXT_TO_STDOUT) == EXT_TO_STDOUT)
|
||||
extractAr(srcFd, fileno(stdout), extractList);
|
||||
if ( (funct & DISPLAY) == DISPLAY)
|
||||
displayEntry(extractList, funct);
|
||||
extractList=extractList->next;
|
||||
}
|
||||
return (TRUE);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user