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switch -- $key(method) {
"rotate_subst" {
switch -- $target {
"c" {
set retval ".type = CVFS_KEYTYPE_ROTATE_SUBST,\n"
append retval ".typedata.rotate_subst.rotate_length = $key(rotate_length),\n"
append retval ".typedata.rotate_subst.subst = [stringify $key(subst)]\n"
return $retval
}
}
}
}
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switch -- $key(method) {
"rotate_subst" {
switch -- $target {
"c" {
set retval ".type = CVFS_KEYTYPE_ROTATE_SUBST,\n"
append retval ".typedata.rotate_subst.rotate_length = $key(rotate_length),\n"
append retval ".typedata.rotate_subst.subst = (unsigned char *) [stringify $key(subst)]\n"
return $retval
}
}
}
}
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# ifndef LOADED_CVFS_COMMON
# define LOADED_CVFS_COMMON 1
typedef enum {
CVFS_FILETYPE_FILE = 0,
CVFS_FILETYPE_DIR = 1,
CVFS_FILETYPE_OBSFUCATED_FILE = 2,
CVFS_FILETYPE_ENCRYPTED_FILE = 3,
} cvfs_filetype_t;
struct cvfs_data {
const char * name;
unsigned long index;
unsigned long size;
cvfs_filetype_t type;
const unsigned char * data;
};
typedef enum {
CVFS_KEYTYPE_ROTATE_SUBST = 0,
} cvfs_keytype_t;
struct cvfs_key {
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# ifndef LOADED_CVFS_COMMON
# define LOADED_CVFS_COMMON 1
typedef enum {
CVFS_FILETYPE_FILE = 0,
CVFS_FILETYPE_DIR = 1,
CVFS_FILETYPE_ENCRYPTED_FILE = 2,
CVFS_FILETYPE_COMPRESSED_FILE = 4,
} cvfs_filetype_t;
struct cvfs_data {
const char * name;
unsigned long index;
unsigned long size;
cvfs_filetype_t type;
const unsigned char * data;
int free;
};
typedef enum {
CVFS_KEYTYPE_ROTATE_SUBST = 0,
} cvfs_keytype_t;
struct cvfs_key {
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}
h &= ((~g) & 0xffffffffLU);
}
return(h);
}
#include <stdio.h>
static int cvfs_decrypt(unsigned char *out, const unsigned char *in, unsigned long in_out_length, struct cvfs_key *key) {
unsigned long i;
unsigned char in_ch, out_ch;
int ch_idx;
for (i = 0; i < in_out_length; i++) {
in_ch = in[i];
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}
h &= ((~g) & 0xffffffffLU);
}
return(h);
}
static int cvfs_decrypt(unsigned char *out, const unsigned char *in, unsigned long in_out_length, struct cvfs_key *key) {
unsigned long i;
unsigned char in_ch, out_ch;
int ch_idx;
for (i = 0; i < in_out_length; i++) {
in_ch = in[i];
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}
# endif /* !LOADED_CVFS_COMMON */}
puts ""
puts "static struct cvfs_data ${code_tag}_data\[\] = {"
puts "\t{"
puts "\t\t.name = NULL,"
puts "\t\t.index = 0,"
puts "\t\t.type = 0,"
puts "\t\t.size = 0,"
puts "\t\t.data = NULL,"
puts "\t},"
for {set idx 1} {$idx < [llength $files]} {incr idx} {
set file [lindex $files $idx]
set shortfile [shorten_file $startdir $file]
unset -nocomplain finfo type
file stat $file finfo
switch -- $finfo(type) {
"file" {
set size $finfo(size)
set fd [open $file]
fconfigure $fd -translation binary
set data [read $fd]
close $fd
if {$obsfucate} {
set type "CVFS_FILETYPE_OBSFUCATED_FILE"
set data "(unsigned char *) [stringify [encrypt $data $obsfucation_key]]"
} else {
set type "CVFS_FILETYPE_FILE"
set data "(unsigned char *) [stringify $data]"
}
}
"directory" {
set type "CVFS_FILETYPE_DIR"
set data "NULL"
set size 0
}
}
puts "\t{"
puts "\t\t.name = \"$shortfile\","
puts "\t\t.index = $idx,"
puts "\t\t.type = $type,"
puts "\t\t.size = $size,"
puts "\t\t.data = $data,"
puts "\t},"
}
puts "};"
puts ""
puts "static unsigned long ${code_tag}_lookup_index(const char *path) {"
puts "\tswitch (cvfs_hash((unsigned char *) path)) {"
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}
# endif /* !LOADED_CVFS_COMMON */}
puts ""
puts "static struct cvfs_data ${code_tag}_data\[\] = {"
puts "\t{"
puts "\t\t/* Index 0 cannot be used because we use the value 0 to represent failure */"
puts "\t\t.name = NULL,"
puts "\t\t.index = 0,"
puts "\t\t.type = 0,"
puts "\t\t.size = 0,"
puts "\t\t.data = NULL,"
puts "\t\t.free = 0,"
puts "\t},"
for {set idx 1} {$idx < [llength $files]} {incr idx} {
set file [lindex $files $idx]
set shortfile [shorten_file $startdir $file]
unset -nocomplain finfo type
file stat $file finfo
switch -- $finfo(type) {
"file" {
set size $finfo(size)
set fd [open $file]
fconfigure $fd -translation binary
set data [read $fd]
close $fd
if {$obsfucate} {
set type "CVFS_FILETYPE_ENCRYPTED_FILE"
set data "(unsigned char *) [stringify [encrypt $data $obsfucation_key]]"
} else {
set type "CVFS_FILETYPE_FILE"
set data "(unsigned char *) [stringify $data]"
}
}
"directory" {
set type "CVFS_FILETYPE_DIR"
set data "NULL"
set size 0
}
}
puts "\t{"
puts "\t\t.name = \"$shortfile\","
puts "\t\t.index = $idx,"
puts "\t\t.type = $type,"
puts "\t\t.size = $size,"
puts "\t\t.data = $data,"
puts "\t\t.free = 0,"
puts "\t},"
}
puts "};"
puts ""
puts "static unsigned long ${code_tag}_lookup_index(const char *path) {"
puts "\tswitch (cvfs_hash((unsigned char *) path)) {"
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puts "\treturn(num_children);"
puts "}"
puts ""
if {$obsfucate} {
puts "static void ${code_tag}_decryptFile(const char *path, struct cvfs_data *finfo) {"
puts "\tstatic struct cvfs_key key = { [string map [list "\n" " "] [encrypt_key_export $obsfucation_key "c"]] };"
puts "\tunsigned char *new_data;"
puts "\tint decrypt_ret;"
puts ""
puts "\tnew_data = malloc(finfo->size);"
puts "\tdecrypt_ret = cvfs_decrypt(new_data, finfo->data, finfo->size, &key);"
puts "\tif (decrypt_ret != 0) {"
puts "\t\tfree(new_data);"
puts ""
puts "\t\treturn;"
puts "\t}"
puts "\tfinfo->data = new_data;"
puts "\tfinfo->type = CVFS_FILETYPE_FILE;"
puts "\treturn;"
puts "}"
puts ""
}
puts "# ifdef CVFS_MAKE_LOADABLE"
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puts "\treturn(num_children);"
puts "}"
puts ""
if {$obsfucate} {
puts "static void ${code_tag}_decryptFile(const char *path, struct cvfs_data *finfo) {"
puts "\tstatic struct cvfs_key key = { [string map [list "\n" " "] [encrypt_key_export $obsfucation_key "c"]] };"
puts "\tunsigned char *new_data, *old_data;"
puts "\tint decrypt_ret, free_old_data;"
puts ""
puts "\tnew_data = malloc(finfo->size);"
puts "\tdecrypt_ret = cvfs_decrypt(new_data, finfo->data, finfo->size, &key);"
puts "\tif (decrypt_ret != 0) {"
puts "\t\tfree(new_data);"
puts ""
puts "\t\treturn;"
puts "\t}"
puts ""
puts "\tfree_old_data = finfo->free;"
puts "\told_data = (void *) finfo->data;"
puts ""
puts "\tfinfo->data = new_data;"
puts "\tfinfo->free = 1;"
puts "\tfinfo->type = CVFS_FILETYPE_FILE;"
puts ""
puts "\tif (free_old_data) {"
puts "\t\tfree(old_data);"
puts "\t}"
puts "\treturn;"
puts "}"
puts ""
}
puts "# ifdef CVFS_MAKE_LOADABLE"
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