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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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The libjson-c versions commonly shipped by Debian and Ubuntu lack unsigned
64bit integer support and a number of extended API functions.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Turn the ucode executable into a multicall binary and select default flags
based on the name it was invoked with. Introduce two new symlinks "ucc" and
"utpl" which start ucode in compile and template mode respectively.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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- Add OS X specific linker flags
- Default disable Linux specific modules on OS X
- Simplify json-c discovery
- Fix uloop_timeout_remaining64() detection
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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The uloop module allows controlling the uloop event loop and supports adding
timeouts, processes and file descriptors.
Example:
#!ucode -RS
let fs = require("fs");
let uloop = require("uloop");
let fd1 = fs.popen("echo 1; sleep 1; echo 2; sleep 1; echo 3", "r");
let fd2 = fs.popen("echo 4; sleep 1; echo 5; sleep 1; echo 6", "r");
function fd_read_callback(flags) {
if (flags & uloop.ULOOP_READ) {
let line = this.handle().read("line");
printf("Line from fd <%s/%d>: <%s>\n",
this, this.fileno(),
trim(line));
}
}
uloop.init();
uloop.timer(1500, function() {
printf("Timeout after 1500ms\n");
});
uloop.handle(fd1, fd_read_callback, uloop.ULOOP_READ);
uloop.handle(fd2, fd_read_callback, uloop.ULOOP_READ);
uloop.process("date", [ "+%s" ], { LC_ALL: "C" }, function(exitcode) {
printf("Date command exited with code %d\n", exitcode);
});
uloop.run();
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Drop support for the `local` keyword and `delete` function calls.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Introduce a new default enable CMake option "COMPILE_SUPPORT" which
allows to disable source code compilation in the ucode interpreter.
Such an interpreter will only be able to load precompiled ucode files.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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- Introduce a new "program" entity which holds the list of functions
created during compilation
- Instead of storing pointers to the in-memory function representation
in the constant list, store the index of the function within the
program's function list
- When loading functions from the constant list, retrieve the function
by index from the program entity
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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- Parse integer literals as unsigned numeric values in order to be able
to represent the entire unsigned 64bit value range
- Stop parsing minus-prefixed integer literals as negative numbers but
treat them as separate minus operator followed by a positive integer
instead
- Only store unsigned numeric constants in bytecode
- Rework numeric comparison logic to be able to handle full 64bit
unsigned integers
- If possible, yield unsigned 64 bit results for additions
- Simplify numeric value conversion API
- Compile code with -fwrapv for defined signed overflow semantics
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Introduce a new "struct" library which is a port of the Python 3.10 struct
module with a reduced set of API functions. It supports the same format
patterns and conversions while providing the following methods:
struct = require('struct');
buf = struct.pack("fmt", args...);
values = struct.unpack("fmt", buf);
struct_inst = struct.new("fmt");
buf = struct_inst.pack(args...);
values = struct_inst.unpack(buf);
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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This adds a simple, UDP-only DNS resolver library mimicking the operation of
the extended busybox nslookup applet.
Simply querying a domain name will perform A + AAAA resolving by default:
# ucode -mresolv -Rs 'printf("%.J\n", resolv.query("example.com"))'
{
"example.com": {
"A": [
"93.184.216.34"
],
"AAAA": [
"2606:2800:220:1:248:1893:25c8:1946"
]
}
}
Passing IP addresses will automatically perform PTR requests:
# ucode -mresolv -Rs 'printf("%.J\n", resolv.query("8.8.8.8"))'
{
"8.8.8.8.in-addr.arpa": {
"PTR": [
"dns.google"
]
}
}
# ucode -mresolv -Rs 'printf("%.J\n", resolv.query("2001:4860:4860::8888"))'
{
"8.8.8.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.6.8.4.0.6.8.4.1.0.0.2.ip6.arpa": {
"PTR": [
"dns.google"
]
}
}
Additional options for query type and nameserver selection can be passed via
a second optional options dictionary:
# ucode -mresolv -Rs 'printf("%.J\n",
resolv.query([ "openwrt.org", "example.org", "doesnotexist.tld" ], {
type: [ "A", "AAAA", "MX" ],
nameserver: [ "1.1.1.1", "8.8.4.4" ],
timeout: 5000,
retries: 2,
edns_maxsize: 4096
}))'
{
"openwrt.org": {
"A": [
"139.59.209.225"
],
"MX": [
[
10,
"util-01.infra.openwrt.org"
]
],
"AAAA": [
"2a03:b0c0:3:d0::1af1:1"
]
},
"example.org": {
"A": [
"93.184.216.34"
],
"AAAA": [
"2606:2800:220:1:248:1893:25c8:1946"
],
"MX": [
[
0,
"."
]
]
},
"doesnotexist.tld": {
"rcode": "NXDOMAIN"
}
}
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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- Ensure that most functions follow the subject_verb naming schema
- Move type related function from value.c to types.c
- Rename value.c to vallist.c
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Do not require parsing in C, pre-split string in cmake and pass it as
command separated string array down to CPP, so that it can be interpolated
directly into a char *path[] array.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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- Shuffle typedefs to avoid need for non-compliant forward declarations
- Fix non-compliant empty struct initializers
- Remove use of braced expressions
- Remove use of anonymous unions
- Avoid `void *` pointer arithmetic
- Fix several warnings reported by gcc -pedantic mode and clang 11 compilation
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Instead of relying on json_object values internally, use custom types to
represent the different ucode value types which brings a number of
advantages compared to the previous approach:
- Due to the use of tagged pointers, small integer, string and bool
values can be stored directly in the pointer addresses, vastly
reducing required heap memory
- Ability to create circular data structures such as
`let o; o = { test: o };`
- Ability to register custom `tostring()` function through prototypes
- Initial mark/sweep GC implementation to tear down circular object
graphs on VM deinit
The change also paves the way for possible future extensions such as
constant variables and meta methods for custom ressource types.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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* add cram based tests
* test under either valgrind or LLVM sanitizers
* add libFuzzer template
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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It doesn't work properly with out of tree builds etc.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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Let's enforce additional automatic checks enforced by the compiler in
order to catch possible errors during compilation.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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So it can be built out of the tree.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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Probably using 3.0+ features anyway and should silence following
warning:
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 2.8.12 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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Replace the former AST walking interpreter implementation with a single pass
bytecode compiler and a corresponding virtual machine.
The rewrite lays the groundwork for a couple of improvements with will be
subsequently implemented:
- Ability to precompile ucode sources into binary byte code
- Strippable debug information
- Reduced runtime memory usage
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Also move shared library output files to the lib/ directory
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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