562 lines
17 KiB
C
562 lines
17 KiB
C
/*
|
|
* Decode a tcpflow from iTunes
|
|
*/
|
|
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <zlib.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
|
|
typedef struct tag_daap_items {
|
|
int type;
|
|
char *tag;
|
|
char *description;
|
|
} DAAP_ITEMS;
|
|
|
|
DAAP_ITEMS taglist[] = {
|
|
{ 0x05, "miid", "dmap.itemid" },
|
|
{ 0x09, "minm", "dmap.itemname" },
|
|
{ 0x01, "mikd", "dmap.itemkind" },
|
|
{ 0x07, "mper", "dmap.persistentid" },
|
|
{ 0x0C, "mcon", "dmap.container" },
|
|
{ 0x05, "mcti", "dmap.containeritemid" },
|
|
{ 0x05, "mpco", "dmap.parentcontainerid" },
|
|
{ 0x05, "mstt", "dmap.status" },
|
|
{ 0x09, "msts", "dmap.statusstring" },
|
|
{ 0x05, "mimc", "dmap.itemcount" },
|
|
{ 0x05, "mctc", "dmap.containercount" },
|
|
{ 0x05, "mrco", "dmap.returnedcount" },
|
|
{ 0x05, "mtco", "dmap.specifiedtotalcount" },
|
|
{ 0x0C, "mlcl", "dmap.listing" },
|
|
{ 0x0C, "mlit", "dmap.listingitem" },
|
|
{ 0x0C, "mbcl", "dmap.bag" },
|
|
{ 0x0C, "mdcl", "dmap.dictionary" },
|
|
{ 0x0C, "msrv", "dmap.serverinforesponse" },
|
|
{ 0x01, "msau", "dmap.authenticationmethod" },
|
|
{ 0x01, "mslr", "dmap.loginrequired" },
|
|
{ 0x0B, "mpro", "dmap.protocolversion" },
|
|
{ 0x01, "msal", "dmap.supportsautologout" },
|
|
{ 0x01, "msup", "dmap.supportsupdate" },
|
|
{ 0x01, "mspi", "dmap.supportspersistentids" },
|
|
{ 0x01, "msex", "dmap.supportsextensions" },
|
|
{ 0x01, "msbr", "dmap.supportsbrowse" },
|
|
{ 0x01, "msqy", "dmap.supportsquery" },
|
|
{ 0x01, "msix", "dmap.supportsindex" },
|
|
{ 0x01, "msrs", "dmap.supportsresolve" },
|
|
{ 0x05, "mstm", "dmap.timeoutinterval" },
|
|
{ 0x05, "msdc", "dmap.databasescount" },
|
|
{ 0x0C, "mlog", "dmap.loginresponse" },
|
|
{ 0x05, "mlid", "dmap.sessionid" },
|
|
{ 0x0C, "mupd", "dmap.updateresponse" },
|
|
{ 0x05, "musr", "dmap.serverrevision" },
|
|
{ 0x01, "muty", "dmap.updatetype" },
|
|
{ 0x0C, "mudl", "dmap.deletedidlisting" },
|
|
{ 0x0C, "mccr", "dmap.contentcodesresponse" },
|
|
{ 0x05, "mcnm", "dmap.contentcodesnumber" },
|
|
{ 0x09, "mcna", "dmap.contentcodesname" },
|
|
{ 0x03, "mcty", "dmap.contentcodestype" },
|
|
{ 0x0B, "apro", "daap.protocolversion" },
|
|
{ 0x0C, "avdb", "daap.serverdatabases" },
|
|
{ 0x0C, "abro", "daap.databasebrowse" },
|
|
{ 0x0C, "abal", "daap.browsealbumlisting" },
|
|
{ 0x0C, "abar", "daap.browseartistlisting" },
|
|
{ 0x0C, "abcp", "daap.browsecomposerlisting" },
|
|
{ 0x0C, "abgn", "daap.browsegenrelisting" },
|
|
{ 0x0C, "adbs", "daap.databasesongs" },
|
|
{ 0x09, "asal", "daap.songalbum" },
|
|
{ 0x09, "asar", "daap.songartist" },
|
|
{ 0x03, "asbt", "daap.songbeatsperminute" },
|
|
{ 0x03, "asbr", "daap.songbitrate" },
|
|
{ 0x09, "ascm", "daap.songcomment" },
|
|
{ 0x01, "asco", "daap.songcompilation" },
|
|
{ 0x09, "ascp", "daap.songcomposer" },
|
|
{ 0x0A, "asda", "daap.songdateadded" },
|
|
{ 0x0A, "asdm", "daap.songdatemodified" },
|
|
{ 0x03, "asdc", "daap.songdisccount" },
|
|
{ 0x03, "asdn", "daap.songdiscnumber" },
|
|
{ 0x01, "asdb", "daap.songdisabled" },
|
|
{ 0x09, "aseq", "daap.songeqpreset" },
|
|
{ 0x09, "asfm", "daap.songformat" },
|
|
{ 0x09, "asgn", "daap.songgenre" },
|
|
{ 0x09, "asdt", "daap.songdescription" },
|
|
{ 0x02, "asrv", "daap.songrelativevolume" },
|
|
{ 0x05, "assr", "daap.songsamplerate" },
|
|
{ 0x05, "assz", "daap.songsize" },
|
|
{ 0x05, "asst", "daap.songstarttime" },
|
|
{ 0x05, "assp", "daap.songstoptime" },
|
|
{ 0x05, "astm", "daap.songtime" },
|
|
{ 0x03, "astc", "daap.songtrackcount" },
|
|
{ 0x03, "astn", "daap.songtracknumber" },
|
|
{ 0x01, "asur", "daap.songuserrating" },
|
|
{ 0x03, "asyr", "daap.songyear" },
|
|
{ 0x01, "asdk", "daap.songdatakind" },
|
|
{ 0x09, "asul", "daap.songdataurl" },
|
|
{ 0x0C, "aply", "daap.databaseplaylists" },
|
|
{ 0x01, "abpl", "daap.baseplaylist" },
|
|
{ 0x0C, "apso", "daap.playlistsongs" },
|
|
{ 0x0C, "arsv", "daap.resolve" },
|
|
{ 0x0C, "arif", "daap.resolveinfo" },
|
|
{ 0x05, "aeNV", "com.apple.itunes.norm-volume" },
|
|
{ 0x01, "aeSP", "com.apple.itunes.smart-playlist" },
|
|
/* iTunes 4.5+ */
|
|
{ 0x01, "msas", "dmap.authenticationschemes" },
|
|
{ 0x05, "ascd", "daap.songcodectype" },
|
|
{ 0x05, "ascs", "daap.songcodecsubtype" },
|
|
{ 0x09, "agrp", "daap.songgrouping" },
|
|
{ 0x05, "aeSV", "com.apple.itunes.music-sharing-version" },
|
|
{ 0x05, "aePI", "com.apple.itunes.itms-playlistid" },
|
|
{ 0x05, "aeCI", "com.apple.iTunes.itms-composerid" },
|
|
{ 0x05, "aeGI", "com.apple.iTunes.itms-genreid" },
|
|
{ 0x05, "aeAI", "com.apple.iTunes.itms-artistid" },
|
|
{ 0x05, "aeSI", "com.apple.iTunes.itms-songid" },
|
|
{ 0x05, "aeSF", "com.apple.iTunes.itms-storefrontid" },
|
|
|
|
/* iTunes 5.0+ */
|
|
{ 0x01, "ascr", "daap.songcontentrating" },
|
|
{ 0x01, "f" "\x8d" "ch", "dmap.haschildcontainers" }, /* was 5? */
|
|
|
|
/* iTunes 6.0.2+ */
|
|
{ 0x01, "aeHV", "com.apple.itunes.has-video" },
|
|
|
|
/* iTunes 6.0.4+ */
|
|
{ 0x05, "msas", "dmap.authenticationschemes" },
|
|
{ 0x09, "asct", "daap.songcategory" },
|
|
{ 0x09, "ascn", "daap.songcontentdescription" },
|
|
{ 0x09, "aslc", "daap.songlongcontentdescription" },
|
|
{ 0x09, "asky", "daap.songkeywords" },
|
|
{ 0x01, "apsm", "daap.playlistshufflemode" },
|
|
{ 0x01, "aprm", "daap.playlistrepeatmode" },
|
|
{ 0x01, "aePC", "com.apple.itunes.is-podcast" },
|
|
{ 0x01, "aePP", "com.apple.itunes.is-podcast-playlist" },
|
|
{ 0x01, "aeMK", "com.apple.itunes.mediakind" },
|
|
{ 0x09, "aeSN", "com.apple.itunes.series-name" },
|
|
{ 0x09, "aeNN", "com.apple.itunes.network-name" },
|
|
{ 0x09, "aeEN", "com.apple.itunes.episode-num-str" },
|
|
{ 0x05, "aeES", "com.apple.itunes.episode-sort" },
|
|
{ 0x05, "aeSU", "com.apple.itunes.season-num" },
|
|
|
|
/* mt-daapd specific */
|
|
{ 0x09, "MSPS", "org.mt-daapd.smart-playlist-spec" },
|
|
{ 0x01, "MPTY", "org.mt-daapd.playlist-type" },
|
|
{ 0x0C, "MAPR", "org.mt-daapd.addplaylist" },
|
|
{ 0x0C, "MAPI", "org.mt-daapd.addplaylistitem" },
|
|
{ 0x0C, "MDPR", "org.mt-daapd.delplaylist" },
|
|
{ 0x0C, "MDPI", "org.mt-daapd.delplaylistitem" },
|
|
{ 0x0C, "MEPR", "org.mt-daapd.editplaylist" },
|
|
{ 0x00, NULL, NULL }
|
|
};
|
|
|
|
int lookup_tag(char *tag, char *descr, int *type) {
|
|
DAAP_ITEMS *current = taglist;
|
|
|
|
while((current->tag) && (strcasecmp(current->tag,tag))) {
|
|
current++;
|
|
}
|
|
|
|
if(current->tag) {
|
|
strcpy(descr,current->description);
|
|
*type = current->type;
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int decode_tag(FILE *fout, unsigned char *current, int level, int len) {
|
|
int type;
|
|
int subtag_len;
|
|
int tempint;
|
|
|
|
char tag[5];
|
|
char descr[40];
|
|
char line[4096];
|
|
char templine[4096];
|
|
|
|
unsigned char cval;
|
|
unsigned short int sival;
|
|
unsigned int ival;
|
|
unsigned long long lival;
|
|
|
|
while(len) {
|
|
memset(tag,0,sizeof(tag));
|
|
memcpy(tag,current,4);
|
|
current += 4;
|
|
len -= 4;
|
|
|
|
subtag_len = current[0] << 24 |
|
|
current[1] << 16 |
|
|
current[2] << 8 |
|
|
current[3];
|
|
|
|
fprintf(stderr,"Tag: %c%c%c%c, subtag len: %d, len: %d\n",
|
|
tag[0],tag[1],tag[2],tag[3],subtag_len, len);
|
|
current += 4;
|
|
len -= 4;
|
|
|
|
if(lookup_tag(tag,descr,&type)) {
|
|
memset(line,' ',sizeof(line));
|
|
sprintf((char*)&line[level * 2],"%02x %s (%s) - ",
|
|
type,tag,descr);
|
|
|
|
switch(type) {
|
|
case 0x01: /* byte */
|
|
case 0x02: /* unsigned byte */
|
|
if(subtag_len != 1) {
|
|
printf("Foo! %s should have tag len 1, has %d\n",
|
|
tag,subtag_len);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
cval = *current;
|
|
sprintf(templine,"%02x (%d)\n",cval, (int)cval);
|
|
current += 1;
|
|
len -= 1;
|
|
break;
|
|
|
|
case 0x03:
|
|
if(subtag_len != 2) {
|
|
printf("Foo! %s should have tag len 2, has %d\n",
|
|
tag,subtag_len);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
sival = current[0] << 8 |
|
|
current[1];
|
|
sprintf(templine,"%02x %d\n",sival,(int)sival);
|
|
current += 2;
|
|
len -= 2;
|
|
break;
|
|
|
|
break;
|
|
|
|
case 0x0A:
|
|
case 0x05:
|
|
if(subtag_len != 4) {
|
|
printf("Foo! %s should have tag len 4, has %d\n",
|
|
tag,subtag_len);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if(strcmp(tag,"mcnm") == 0) {
|
|
sprintf(templine,"%c%c%c%c (%04x)\n",
|
|
*((char*)current),
|
|
*((char*)current+1),
|
|
*((char*)current+2),
|
|
*((char*)current+3),
|
|
*((int*)current));
|
|
} else {
|
|
ival = current[0] << 24 |
|
|
current[1] << 16 |
|
|
current[2] << 8 |
|
|
current[3];
|
|
sprintf(templine,"%04x (%d)\n",ival,ival);
|
|
}
|
|
current += 4;
|
|
len -= 4;
|
|
break;
|
|
|
|
case 0x07:
|
|
if(subtag_len != 8) {
|
|
printf("Foo! %s should have tag len 8, has %d\n",
|
|
tag,subtag_len);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
lival = current[0] << 24 |
|
|
current[1] << 16 |
|
|
current[2] << 8 |
|
|
current[3];
|
|
|
|
lival = lival << 32;
|
|
lival = lival | current [4] << 24 |
|
|
current[5] << 16 |
|
|
current[6] << 8 |
|
|
current[7];
|
|
|
|
sprintf(templine,"%04x%04x (%lu)\n",
|
|
(unsigned int)((lival >> 32) & 0xFFFFFFFF),
|
|
(unsigned int)(lival & 0xFFFFFFFF),
|
|
lival);
|
|
current += 8;
|
|
len -= 8;
|
|
break;
|
|
|
|
case 0x09:
|
|
if(subtag_len == 0) {
|
|
strcpy(templine,"(empty)\n");
|
|
} else {
|
|
memset(templine,0,sizeof(templine));
|
|
memcpy(templine,current,subtag_len);
|
|
strcat(templine,"\n");
|
|
}
|
|
current += subtag_len;
|
|
len -= subtag_len;
|
|
break;
|
|
|
|
case 0x0B:
|
|
if(subtag_len != 4) {
|
|
printf("Foo! %s should have tag len 4, has %d\n",
|
|
tag,subtag_len);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
ival = current[0] << 24 |
|
|
current[1] << 16 |
|
|
current[2] << 8 |
|
|
current[3];
|
|
sprintf(templine,"%d.%d\n",ival >> 16 & 0xFFFF,
|
|
ival & 0xFFFF);
|
|
|
|
current += 4;
|
|
len -= 4;
|
|
break;
|
|
|
|
case 0x0C:
|
|
sprintf(templine,"<container>\n");
|
|
break;
|
|
|
|
default:
|
|
printf("Foo! Bad tag: type %d\n",type);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
|
|
fprintf(fout,"%s%s",line,templine);
|
|
|
|
if(type == 0x0c) {
|
|
if(decode_tag(fout, current,level+1,subtag_len)) {
|
|
current += subtag_len;
|
|
len -= subtag_len;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
} else {
|
|
printf("Bad tag: %s (%02x%02x%02x%02x)\n",tag,(unsigned char)tag[0],(unsigned char)tag[1],
|
|
(unsigned char)tag[2],(unsigned char)tag[3]);
|
|
exit(EXIT_FAILURE);
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
|
|
void decode_dmap(int conv, unsigned char *uncompressed, long uncompressed_size) {
|
|
char buffer[256];
|
|
FILE *fout;
|
|
|
|
sprintf(buffer,"decoded.%d",conv);
|
|
fout=fopen(buffer,"w");
|
|
|
|
if(!decode_tag(fout,uncompressed,0,uncompressed_size)) {
|
|
printf("Foo! All screwed up!\n");
|
|
}
|
|
fclose(fout);
|
|
}
|
|
|
|
|
|
int readline(int fd, char *buffer) {
|
|
char *current;
|
|
char inchar;
|
|
|
|
current=buffer;
|
|
while(read(fd,&inchar,1) == 1) {
|
|
switch(inchar) {
|
|
case '\r':
|
|
break;
|
|
case '\n':
|
|
*current='\0';
|
|
return 0;
|
|
default:
|
|
*current++ = inchar;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
void usage(void) {
|
|
fprintf(stderr,"usage: decodeflow [-d] file\n");
|
|
fprintf(stderr," -d: file is a dmap dump, not a flow");
|
|
fprintf(stderr,"\n\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
int fd;
|
|
int conversation=0;
|
|
char buffer[1024];
|
|
int done=0;
|
|
FILE *out;
|
|
char *compressed;
|
|
unsigned char *uncompressed;
|
|
long compressed_size;
|
|
long uncompressed_size;
|
|
int err;
|
|
char file[256];
|
|
int out_fd;
|
|
FILE *stream;
|
|
int option;
|
|
int is_compressed;
|
|
char *loc;
|
|
int dmap=0;
|
|
|
|
while((option=getopt(argc, argv, "d")) != -1) {
|
|
switch(option) {
|
|
case 'd':
|
|
dmap=1;
|
|
break;
|
|
default:
|
|
usage();
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
if(optind == argc) {
|
|
usage();
|
|
}
|
|
|
|
fd=open(argv[optind],O_RDONLY);
|
|
if(fd == -1) {
|
|
perror("open");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if(dmap) {
|
|
out=fdopen(STDOUT_FILENO,"w");
|
|
uncompressed_size=lseek(fd,0,SEEK_END);
|
|
lseek(fd,0,SEEK_SET);
|
|
uncompressed=(unsigned char*)malloc(uncompressed_size);
|
|
read(fd,uncompressed,uncompressed_size);
|
|
decode_tag(out,uncompressed,0,uncompressed_size);
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
|
|
while(!done) {
|
|
/* read in the headers */
|
|
is_compressed=0;
|
|
printf("Reading headers for conv %d\n",conversation);
|
|
while(1) {
|
|
if(readline(fd,buffer)) {
|
|
done=1;
|
|
break;
|
|
}
|
|
|
|
printf("got %s\n",buffer);
|
|
|
|
if(!strlen(buffer))
|
|
break;
|
|
|
|
if(strncasecmp(buffer,"Content-Encoding:",17) == 0) {
|
|
loc=buffer+17;
|
|
while(*loc==' ') {
|
|
loc++;
|
|
}
|
|
|
|
if(strncasecmp(loc,"gzip",4) == 0) {
|
|
is_compressed=1;
|
|
}
|
|
}
|
|
|
|
if(strncasecmp(buffer,"Content-Length:",15) == 0) {
|
|
compressed_size=atol((char*)&buffer[15]);
|
|
printf("Size of conv %d is %d\n",conversation,compressed_size);
|
|
}
|
|
}
|
|
|
|
if(done)
|
|
break;
|
|
|
|
printf("Headers complete for conversation %d\n",conversation);
|
|
printf("Flow %s compressed\n",is_compressed ? "IS" : "IS NOT");
|
|
|
|
uncompressed_size = 20 * compressed_size;
|
|
|
|
compressed=(char*)malloc(compressed_size);
|
|
uncompressed=(unsigned char*)malloc(uncompressed_size);
|
|
|
|
if((!compressed) || (!uncompressed)) {
|
|
perror("malloc");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if(read(fd,compressed,compressed_size) != compressed_size) {
|
|
perror("read");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/* dump the compressed data */
|
|
sprintf(file,"compressed.%d",conversation);
|
|
out_fd=open(file,O_CREAT | O_RDWR,0666);
|
|
if(out_fd == -1) {
|
|
perror("open");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
write(out_fd,compressed,compressed_size);
|
|
close(out_fd);
|
|
|
|
if(is_compressed) {
|
|
sprintf(file,"/sw/bin/zcat compressed.%d",conversation);
|
|
stream=popen(file,"r");
|
|
if(!stream) {
|
|
perror("popen");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
|
|
err=fread(uncompressed,1,uncompressed_size,stream);
|
|
if(err == -1) {
|
|
perror("fread");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if(err == uncompressed_size) {
|
|
printf("Error: buffer too small\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
uncompressed_size = err;
|
|
pclose(stream);
|
|
} else {
|
|
uncompressed_size=compressed_size;
|
|
memcpy(uncompressed,compressed,compressed_size);
|
|
}
|
|
|
|
/* dump the uncompressed data */
|
|
sprintf(file,"uncompressed.%d",conversation);
|
|
out_fd=open(file,O_CREAT | O_RDWR,0666);
|
|
if(out_fd == -1) {
|
|
perror("open");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
write(out_fd,uncompressed,uncompressed_size);
|
|
close(out_fd);
|
|
|
|
printf("Uncompressed size: %d\n",uncompressed_size);
|
|
|
|
/* now decode and print */
|
|
decode_dmap(conversation, uncompressed, uncompressed_size);
|
|
|
|
free(compressed);
|
|
free(uncompressed);
|
|
conversation++;
|
|
}
|
|
|
|
printf("Done");
|
|
}
|
|
|
|
|