int main(int argc, char *argv[])
{
#ifdef HANDLER
signal(SIGABRT, sig_abrt);
#endif
printf("in main:\n");
l_abort();
printf("after abort:\n"); /*never arrive */
return 0;
}
// Public API
//Open a Zip file and initialize.
void
openZipFileReader(char *fname) {
if (!zipfp) {
zipfp = fopen(fname, "rb");
if (!zipfp) {
perror("fopen");
sprintf(message, "Could not open input zip file %s\n",fname);
l_abort(message);
}
}
}
// Write data to the ZIP output stream.
void
write_data(void *buff, int len)
{
while (len > 0) {
int rc = fwrite(buff, 1, len, jarfp);
if (rc <= 0) {
sprintf(message, "Write on output file failed err=%d\n",errno);
l_abort(message);
}
output_file_offset += rc;
buff = ((char *)buff) + rc;
len -= rc;
}
}
//Read the file and extract its contents to the
//to the directory of the zipfile.
void do_read(char *inputzip, char* outputdir)
{
char *extract_dir = NULL;
if (outputdir != NULL)
extract_dir = dirname(outputdir);
else
extract_dir = dirname(inputzip);
if ( (extract_dir != NULL) && (strlen(extract_dir) > 0) )
{
// ensure directory is created first
char *dir = (char *) malloc(strlen(extract_dir) + 2);
sprintf(dir, "%s/", extract_dir);
mkdirs(dir);
free(dir);
chdir(extract_dir);
}
openZipFileReader(inputzip);
fprintf(stderr,"Archive: %s\n",inputzip);
bool next = isNext();
// We must have atleast one entry
if (!next) {
sprintf(message,"Error: no entries in zip file.\n");
l_abort(message);
}
while (next) {
readAndWrite();
next = isNext();
}
closeZipFileReader();
if (remove_input_zip_file) remove(inputzip);
}
static void readAndWrite() {
char filename[MAX_PATH];
int rc;
//Note: We have already read the magic number of 4 bytes.
//Skip to compression if the file is compressed then abort.
fseek(zipfp,4,SEEK_CUR);
ushort compression;
rc = fread(&compression,1,sizeof(ushort),zipfp);
if (compression) l_abort("Error: Cannot unzip deflated file entries.\n");
// Skip over to file length
fseek(zipfp,12,SEEK_CUR);
int file_len;
rc = fread(&file_len,1,sizeof(int),zipfp);
ushort filenamelen;
rc = fread(&filenamelen,1,sizeof(ushort),zipfp);
ushort extrafieldlen;
rc = fread(&extrafieldlen,1, sizeof(ushort), zipfp);
rc = fread(filename,filenamelen,sizeof(char),zipfp);
filename[filenamelen]='\0';
if (rc <=0) {
sprintf(message,"Error: Could not read filename <%s> from zip header\n", filename);
l_abort(message);
}
bool isDir = (filename[filenamelen-1] == '/') ? true : false;
char *pathname = dirname(filename);
if (pathname != NULL) {
mkdirs(filename);
free(pathname);
}
fprintf(stderr," extracting: %s",filename);
FILE *filefp=NULL;
if (!isDir) {
filefp = fopen(filename,"wb+");
if (filefp == NULL) {
sprintf(message,"Error:fopen: while opening file <%s>\n",filename);
l_abort(message);
}
}
if (extrafieldlen > 0) {
fseek(zipfp,extrafieldlen,SEEK_CUR);
}
if (!isDir) {
//Read and write our file entry
rc = 1;
{
char *buffer = (char *) malloc(file_len+1);
rc = fread(buffer, 1, file_len, zipfp);
int rc2 = fwrite(buffer,1,rc,filefp);
if (buffer) free(buffer);
}
fclose(filefp);
}
fprintf(stderr,"\n");
}
