mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-09-08 08:33:19 +02:00
274 lines
7.4 KiB
C
274 lines
7.4 KiB
C
/*
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miniunz.c
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Version 1.01e, February 12th, 2005
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Copyright (C) 1998-2005 Gilles Vollant
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <errno.h>
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#include <fcntl.h>
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# include <unistd.h>
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# include <utime.h>
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#include "unzip.h"
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#define CASESENSITIVITY (0)
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#define WRITEBUFFERSIZE (8192)
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#define MAXFILENAME (256)
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static int mymkdir(const char* dirname) {
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int ret=0;
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ret = mkdir (dirname,0775);
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return ret;
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}
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int makedir (char *newdir) {
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char *buffer ;
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char *p;
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int len = (int)strlen(newdir);
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if (len <= 0)
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return 0;
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buffer = (char*)malloc(len+1);
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strcpy(buffer,newdir);
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if (buffer[len-1] == '/') {
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buffer[len-1] = '\0';
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}
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if (mymkdir(buffer) == 0) {
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free(buffer);
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return 1;
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}
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p = buffer+1;
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while (1) {
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char hold;
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while (*p && *p != '\\' && *p != '/')
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p++;
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hold = *p;
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*p = 0;
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if ((mymkdir(buffer) == -1) && (errno == ENOENT)) {
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// printf("couldn't create directory %s\n",buffer);
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free(buffer);
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return 0;
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}
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if (hold == 0)
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break;
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*p++ = hold;
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}
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free(buffer);
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return 1;
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}
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static char *fullfilename(const char *basedir, char *filename) {
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char *file = (char *) malloc(strlen(basedir) + strlen(filename) + 1);
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if (basedir == NULL) {
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strcpy(file, filename);
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} else {
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if (basedir[strlen(basedir) - 1] == '/') {
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sprintf(file, "%s%s", basedir, filename);
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} else {
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sprintf(file, "%s/%s", basedir, filename);
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}
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}
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return file;
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}
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static int do_extract_currentfile(unzFile uf,const int* popt_extract_without_path,int* popt_overwrite,const char* password, const char *basedir) {
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char filename_inzip[256];
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char* filename_withoutpath;
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char* filename_withpath;
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char* p;
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int err=UNZ_OK;
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FILE *fout=NULL;
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void* buf;
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uInt size_buf;
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unz_file_info file_info;
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err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
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if (err!=UNZ_OK) {
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// printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
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return err;
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}
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size_buf = WRITEBUFFERSIZE;
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buf = (void*)malloc(size_buf);
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if (buf==NULL) {
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// printf("Error allocating memory\n");
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return UNZ_INTERNALERROR;
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}
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p = filename_withoutpath = filename_inzip;
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filename_withpath = fullfilename(basedir, filename_inzip);
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while ((*p) != '\0') {
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if (((*p)=='/') || ((*p)=='\\'))
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filename_withoutpath = p+1;
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p++;
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}
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if ((*filename_withoutpath)=='\0') {
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if ((*popt_extract_without_path)==0) {
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// Fix the path, this will fail if the directoryname is the same as the first filename in the zip
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char *path = (char *) malloc(strlen(filename_withpath));
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strcpy(path, filename_withpath);
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char *ptr = strstr(path, filename_withoutpath);
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*ptr = '\0';
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// printf("creating directory: %s\n",path);
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mymkdir(path);
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free(path);
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}
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} else {
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char* write_filename;
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int skip=0;
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if ((*popt_extract_without_path)==0)
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write_filename = filename_withpath;
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else
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write_filename = filename_withoutpath;
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err = unzOpenCurrentFilePassword(uf,password);
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if (err!=UNZ_OK) {
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// printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
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}
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if (((*popt_overwrite)==0) && (err==UNZ_OK)) {
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char rep=0;
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FILE* ftestexist;
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ftestexist = fopen(write_filename,"rb");
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if (ftestexist!=NULL) {
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fclose(ftestexist);
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do {
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char answer[128];
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int ret;
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// printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
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ret = scanf("%1s",answer);
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if (ret != 1) {
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exit(EXIT_FAILURE);
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}
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rep = answer[0] ;
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if ((rep>='a') && (rep<='z'))
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rep -= 0x20;
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} while ((rep!='Y') && (rep!='N') && (rep!='A'));
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}
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if (rep == 'N')
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skip = 1;
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if (rep == 'A')
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*popt_overwrite=1;
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}
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if ((skip==0) && (err==UNZ_OK)) {
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fout=fopen(write_filename,"wb");
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/* some zipfile don't contain directory alone before file */
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if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
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(filename_withoutpath!=(char*)filename_inzip)) {
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char c=*(filename_withoutpath-1);
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*(filename_withoutpath-1)='\0';
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// Fix the path, this will fail if the directoryname is the same as the first filename in the zip
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char *path = (char *) malloc(strlen(write_filename));
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strcpy(path, write_filename);
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char *ptr = strstr(path, filename_withoutpath);
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*ptr = '\0';
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makedir(path);
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free(path);
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*(filename_withoutpath-1)=c;
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fout=fopen(write_filename,"wb");
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}
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if (fout==NULL) {
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// printf("error opening %s\n",write_filename);
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}
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}
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if (fout!=NULL) {
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// printf(" extracting: %s\n",write_filename);
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do {
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err = unzReadCurrentFile(uf,buf,size_buf);
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if (err<0) {
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// printf("error %d with zipfile in unzReadCurrentFile\n",err);
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break;
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}
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if (err>0)
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if (fwrite(buf,err,1,fout)!=1) {
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// printf("error in writing extracted file\n");
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err=UNZ_ERRNO;
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break;
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}
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} while (err>0);
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if (fout)
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fclose(fout);
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}
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if (err==UNZ_OK) {
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err = unzCloseCurrentFile (uf);
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if (err!=UNZ_OK) {
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// printf("error %d with zipfile in unzCloseCurrentFile\n",err);
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}
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} else
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unzCloseCurrentFile(uf); /* don't lose the error */
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}
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free(filename_withpath);
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free(buf);
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return err;
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}
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int extractZip(unzFile uf,int opt_extract_without_path,int opt_overwrite,const char* password, const char *basedir) {
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uLong i;
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unz_global_info gi;
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int err;
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err = unzGetGlobalInfo (uf,&gi);
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if (err!=UNZ_OK)
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// printf("error %d with zipfile in unzGetGlobalInfo \n",err);
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for (i=0;i<gi.number_entry;i++) {
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if (do_extract_currentfile(uf,&opt_extract_without_path,
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&opt_overwrite,
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password, basedir) != UNZ_OK)
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break;
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if ((i+1)<gi.number_entry) {
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err = unzGoToNextFile(uf);
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if (err!=UNZ_OK) {
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// printf("error %d with zipfile in unzGoToNextFile\n",err);
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break;
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}
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}
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}
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return 0;
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}
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int extractZipOnefile(unzFile uf,const char* filename,int opt_extract_without_path,int opt_overwrite,const char* password) {
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if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK) {
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// printf("file %s not found in the zipfile\n",filename);
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return 2;
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}
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if (do_extract_currentfile(uf,&opt_extract_without_path,
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&opt_overwrite,
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password, NULL) == UNZ_OK)
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return 0;
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else
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return 1;
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}
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