0.20150709: init version

Makefile

@@ -0,0 +1,22 @@
+PACKAGE = torreadwrite
+TARGETS = torread torwrite
+
+CC = gcc
+LD = $(CC)
+CFLAGS = 
+LDFLAGS = -s
+SRCS = src
+RM = rm -fv
+
+.PHONY: all clean
+
+all: $(TARGETS)
+
+torread: $(SRCS)/torread.c
+	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
+
+torwrite: $(SRCS)/torwrite.c
+	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
+
+clean:
+	$(RM) $(TARGETS)

README

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+torreadwrite 0.20150709
+VL-LUG
+ XMPP:  <xmpp:[email protected]>
+ URL:   http://www.linuxdv.org/wiki/projects/torrents_editor
+ SRC:   http://linuxdv.ru/forum/download/file.php?id=28
+
+
+BUILD
+
+$ bash build.sh
+
+INSTALL
+
+$ sudo cp torread /usr/bin
+$ sudo cp torwrite /usr/bin
+$ sudo cp torreadwrite.1.gz /usr/share/man/man1
+$ sudo ln -s /usr/share/man/man1/torreadwrite.1.gz /usr/share/man/man1/torread.1.gz
+$ sudo ln -s /usr/share/man/man1/torreadwrite.1.gz /usr/share/man/man1/torwrite.1.gz
+
+SAMPLE
+
+$ torread samplefile.torrent > samplefile.torrent.txt
+$ nano samplefile.torrent.txt
+
+$ torwrite samplefile.torrent.txt > samplefile.mod.torrent
+
+STRUCTURE
+
+Content torrent file
+
+Content torrent file is encoded as described above. Himself torrent file is bencoded dictionary with the following keys:
+
+    info: a dictionary describing the files in the torrent. There are two forms of the dictionary, the first to the torrent that contains only one file, and the second - for multi file torrent.
+    announce: string with a URL of the tracker.
+    announce-list: (optional) list of lists, each of which contains a string with a URL of the tracker.
+    creation date: (optional) integer - the creation of a torrent in seconds era UNIX (number of seconds since 00:00:00 01/01/1970).
+    comment: (optional) string with an arbitrary comment.
+    created by: (optional) string with the name and version of the created torrent file program.
+    encoding: (optional) any string of unknown purpose.
+
+In beztrekernom torrent announce and no announce-list, but instead there is an element nodes, which is a list of lists, each of which contains a line with the address and the number of nodes - the port number. Something like nodes = [[«<host>», <port>], [«<host>», <port>], ...]. The simplest option - nodes = [[«127.0.0.1», 6881]].
+
+Dictionary info
+
+The parameters are the same for single-file and multi-file torrents.
+
+    piece length: number of bytes in a piece, usually a power of two.
+    pieces: a string of united 20-byte SHA1 hash pieces.
+    private: (optional) number. If it is one, the customer to search for peers to be used only tracker (s) specified in the torrent file. If this number is zero, the customer can add peers any methods: manually, or via DHT and Peer Exchange t. D.
+
+For single file torrents:
+
+    name: string filename.
+    length: the number of bytes in the file.
+    md5sum: (optional) string MD5 sums file. Fucking useless.
+
+For multi file torrent:
+
+    name: string with the name of the directory where all files will be placed.
+    files: a list of dictionaries, one for each file. Each dictionary contains the following keys:
+    length: the number of bytes in the file.
+    md5sum: (optional) string MD5 sums file. Fuck no one needs, as in the previous case.
+    path: a list of one or more lines, representing together a file path. The last line - the name of the file, the previous - the sequence of nested directories. For example, the path «dir1 / dir2 / file.ext» will be presented in a list of three lines: «dir1», «dir2», «file.ext».

html/ru/index.rdf

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+<?xml version="1.0"?>
+<RDF:RDF xmlns:MAF="http://maf.mozdev.org/metadata/rdf#"
+         xmlns:NC="http://home.netscape.com/NC-rdf#"
+         xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
+  <RDF:Description RDF:about="urn:root">
+    <MAF:originalurl RDF:resource="file:///home/mykaralw/Downloads/html/torreadwrite-wiki_www.linuxdv.org.utf8.html"/>
+    <MAF:title RDF:resource="Редактирование торрент-файлов - Linux во Владивостоке"/>
+    <MAF:archivetime RDF:resource="Thu, 09 Jul 2015 19:33:39 +0300"/>
+    <MAF:indexfilename RDF:resource="index.html"/>
+    <MAF:charset RDF:resource="UTF-8"/>
+  </RDF:Description>
+</RDF:RDF>

man/torreadwrite.1

@@ -0,0 +1,98 @@
+.TH torreadwrite "1" "09 Jul 2015" "0.20150709" "User Manual"
+.PP
+torreadwrite
+.PP
+VL-LUG
+.PP
+XMPP: <xmpp:[email protected]>
+.PP
+URL:  http://www.linuxdv.org/wiki/projects/torrents_editor
+.PP
+SRC:  http://linuxdv.ru/forum/download/file.php?id=28
+.PP
+
+.SH SAMPLE
+
+$
+.B torread
+samplefile.torrent > samplefile.torrent.txt
+.PP
+$
+.B nano
+samplefile.torrent.txt
+.PP
+$
+.B torwrite
+samplefile.torrent.txt > samplefile.mod.torrent
+.PP
+
+.SH STRUCTURE
+
+Content torrent file
+.PP
+Content torrent file is encoded as described above. Himself torrent file is bencoded dictionary with the following keys:
+.PP
+.B info:
+a dictionary describing the files in the torrent. There are two forms of the dictionary, the first to the torrent that contains only one file, and the second - for multi file torrent.
+.PP
+.B announce:
+string with a URL of the tracker.
+.PP
+.B announce-list:
+(optional) list of lists, each of which contains a string with a URL of the tracker.
+.PP
+.B creation date:
+(optional) integer - the creation of a torrent in seconds era UNIX (number of seconds since 00:00:00 01/01/1970).
+.PP
+.B comment:
+(optional) string with an arbitrary comment.
+.PP
+.B created by:
+(optional) string with the name and version of the created torrent file program.
+.PP
+.B encoding:
+(optional) any string of unknown purpose.
+.PP
+In beztrekernom torrent announce and no announce-list, but instead there is an element nodes, which is a list of lists, each of which contains a line with the address and the number of nodes - the port number. Something like nodes = [[«<host>», <port>], [«<host>», <port>], \.\.\.]. The simplest option - nodes = [[«127.0.0.1», 6881]].
+.PP
+Dictionary info
+.PP
+The parameters are the same for single-file and multi-file torrents.
+.PP
+.B piece length:
+number of bytes in a piece, usually a power of two.
+.PP
+.B pieces:
+a string of united 20-byte SHA1 hash pieces.
+.PP
+.B private:
+(optional) number. If it is one, the customer to search for peers to be used only tracker (s) specified in the torrent file. If this number is zero, the customer can add peers any methods: manually, or via DHT and Peer Exchange t. D.
+.PP
+For single file torrents:
+.PP
+.B name:
+string filename.
+.PP
+.B length:
+the number of bytes in the file.
+.PP
+.B md5sum:
+(optional) string MD5 sums file. Fucking useless.
+.PP
+For multi file torrent:
+.PP
+.B name:
+string with the name of the directory where all files will be placed.
+.PP
+.B files:
+a list of dictionaries, one for each file. Each dictionary contains the following keys:
+.PP
+.B length:
+the number of bytes in the file.
+.PP
+.B md5sum:
+(optional) string MD5 sums file. Fuck no one needs, as in the previous case.
+.PP
+.B path:
+a list of one or more lines, representing together a file path. The last line - the name of the file, the previous - the sequence of nested directories. For example, the path «dir1 / dir2 / file.ext» will be presented in a list of three lines: «dir1», «dir2», «file.ext».
+.PP

src/torread.c

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+/* $Id: torread.c 529 2009-09-11 08:44:53Z michael $ */
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+const uint8_t sp=' ';
+const uint8_t ret='\n';
+const uint8_t quo='\"';
+const uint8_t scr='\\';
+const uint8_t hxp='x';
+const uint8_t blst='[';
+const uint8_t elst=']';
+const uint8_t bdct='(';
+const uint8_t edct=')';
+const uint8_t eqv='=';
+const int stdout=1;
+
+enum obj_type {OBJ_NUL, OBJ_INT, OBJ_STR, OBJ_LST, OBJ_DCT};
+
+void Byte2Hex(uint8_t ch);
+void PrintSpc(int num);
+enum obj_type DetType(const uint8_t* d, size_t shift);
+size_t FindSym(const uint8_t* d, uint8_t s, size_t shift, size_t len);
+size_t PrintInt(const uint8_t* d, size_t shift, size_t len);
+size_t PrintStr(const uint8_t* d, size_t shift, size_t len);
+size_t PrintLst(const uint8_t* d, size_t shift, size_t len, int skip);
+size_t PrintDct(const uint8_t* d, size_t shift, size_t len, int skip);
+size_t PrintObj(const uint8_t* d, size_t shift, size_t len, int skip);
+
+void Byte2Hex(uint8_t ch)
+{
+ static const uint8_t cnv[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
+ write(stdout,cnv+((ch&(15<<4))>>4),1);
+ write(stdout,cnv+(ch&15),1);
+}
+
+void PrintSpc(int num)
+{
+ int i;
+ for(i=0;i<num;i++) write(stdout,&sp,1);
+}
+
+enum obj_type DetType(const uint8_t* d, size_t shift)
+{
+// write(2,d+shift,1);
+ if(d[shift]=='i') return OBJ_INT;
+ if(d[shift]=='l') return OBJ_LST;
+ if(d[shift]=='d') return OBJ_DCT;
+ if(d[shift]>=49 && d[shift]<=57) return OBJ_STR;
+ return OBJ_NUL;
+}
+
+size_t FindSym(const uint8_t* d, uint8_t s, size_t shift, size_t len)
+{
+ size_t i;
+
+ for(i=shift;i<len;i++) if(d[i]==s) return i;
+ exit(2);
+}
+
+size_t PrintObj(const uint8_t* d, size_t shift, size_t len, int skip)
+{
+ switch(DetType(d,shift))
+ {
+  case(OBJ_NUL): exit(2);
+  case(OBJ_INT): return PrintInt(d,shift,len);
+  case(OBJ_STR): return PrintStr(d,shift,len);
+  case(OBJ_LST): return PrintLst(d,shift,len,skip);
+  case(OBJ_DCT): return PrintDct(d,shift,len,skip);
+ }
+ exit(2);
+}
+
+size_t PrintInt(const uint8_t* d, size_t shift, size_t len)
+{
+ size_t e=FindSym(d,'e',shift,len);
+ write(stdout,d+shift+1,e-shift-1);
+ return e+1;
+}
+
+size_t PrintStr(const uint8_t* d, size_t shift, size_t len)
+{
+ size_t e=FindSym(d,':',shift,len);
+ int l=atoi((const char*)(d+shift));
+ if(e+l>=len) exit(2);
+ size_t p;
+
+ write(stdout,&quo,1);
+ for(p=e+1;p<=e+l;p++)
+ {
+  if(d[p]==127 || d[p]<32)
+  {
+   write(stdout,&scr,1);
+   write(stdout,&hxp,1);
+   Byte2Hex(d[p]);
+  }
+  else if(d[p]=='\\')
+  {
+   write(stdout,&scr,1);
+   write(stdout,&scr,1);
+  }
+  else if(d[p]=='\"')
+  {
+   write(stdout,&scr,1);
+   write(stdout,&quo,1);
+  }
+  else write(stdout,d+p,1);
+ }
+
+ write(stdout,&quo,1);
+ return e+l+1;
+}
+
+size_t PrintLst(const uint8_t* d, size_t shift, size_t len, int skip)
+{
+ size_t ishift=shift+1;
+
+ write(stdout,&blst,1);
+ write(stdout,&ret,1);
+
+ while(d[ishift]!='e')
+ {
+  PrintSpc(skip+1);
+  ishift=PrintObj(d,ishift,len,skip+1);
+  write(stdout,&ret,1);
+  if(ishift>=len) exit(2);
+ }
+ PrintSpc(skip);
+ write(stdout,&elst,1);
+ return ishift+1;
+}
+
+size_t PrintDct(const uint8_t* d, size_t shift, size_t len, int skip)
+{
+ size_t ishift=shift+1;
+
+ write(stdout,&bdct,1);
+ write(stdout,&ret,1);
+
+ while(d[ishift]!='e')
+ {
+  PrintSpc(skip+1);
+  if(DetType(d,ishift)!=OBJ_STR) exit(2);
+  ishift=PrintStr(d,ishift,len);
+  write(stdout,&sp,1);
+  write(stdout,&eqv,1);
+  write(stdout,&sp,1);
+  ishift=PrintObj(d,ishift,len,skip+1);
+  write(stdout,&ret,1);
+  if(ishift>=len) exit(2);
+ }
+ PrintSpc(skip);
+ write(stdout,&edct,1);
+ return ishift+1;
+}
+
+int main(int argc, char** argv)
+{
+ if(argc!=2) return 1;
+
+ int fd;
+ struct stat st;
+ uint8_t *pdata;
+
+ fd=open(argv[1],O_RDONLY); if(fd==-1) return 1;
+ if(fstat(fd,&st)!=0) return 1;
+ if(st.st_size==0) return 1;
+ pdata=(uint8_t*) mmap(0,st.st_size,PROT_READ,MAP_SHARED,fd,0);
+ PrintDct(pdata,0,st.st_size,0);
+ write(stdout,&ret,1);
+ munmap(pdata,st.st_size);
+ close(fd);
+
+ return 0;
+}