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target/
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[package]
name = "rsslair"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
anyhow = "1.0.87"
chrono = "0.4.38"
clap = { version = "4.5.18", features = ["derive"] }
clap_derive = "4.5.18"
cron = "0.12.1"
cron-lingo = "0.4.2"
env_logger = "0.11.5"
html5ever = "0.29.0"
hyper = "1.4.1"
hyper-router = "0.5.0"
log = "0.4.22"
markup5ever = "0.14.0"
markup5ever_rcdom = "0.3.0"
minidom = "0.16.0"
mlua = { version = "0.9.9", features = ["lua54", "macros", "async"] }
once_cell = "1.19.0"
quick-xml = { version = "0.36.1", features = ["serialize"]}
redis = { version = "0.27.2", features = ["tokio-comp", "aio"] }
reqwest = { version = "0.12.7", features = ["blocking"] }
rusqlite = "0.32.1"
scraper = "0.20.0"
serde = { version = "1.0.130", features = ["derive", "rc"]}
serde_json = "1.0.128"
tiny_http = "0.12.0"
tokio = { version = "1.40.0", features = ["full"] }
tokio-macros = "2.4.0"
warp = "0.3.7"
xml = "0.8.20"

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FROM rust as builder
FROM golang:1.21.5
COPY . /app
WORKDIR /app
COPY . .
RUN apt-get update && apt-get install lua5.4 liblua5.4-dev -y
RUN cargo build --release
RUN go mod download
RUN go build -o rsslair .
FROM debian:bookworm-slim as runtime
WORKDIR /app
COPY --from=builder /app/target/release/rsslair .
COPY ./run.bash .
RUN apt-get update && apt-get install liblua5.4-0 libssl3 sqlite3 -y
CMD ["./run.bash"]
# Set the entrypoint
ENTRYPOINT ["/app/rsslair"]

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LICENSE
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DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

339
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

64
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package main
import (
"os"
"github.com/17xande/configdir"
"github.com/pelletier/go-toml"
)
type AppConfig struct {
SyncInterval int // Sync time in minutes
ShouldCache bool // Should we cache the rss feeds
Scripts []string // Scripts to execute
}
func createDefaultConfig(configPath string) {
config := AppConfig{
SyncInterval: 60,
ShouldCache: true,
Scripts: []string{"all"},
}
file, err := os.Create(configPath + "/config.toml")
if err != nil {
logger.Fatal(err)
}
defer file.Close()
encoder := toml.NewEncoder(file)
err = encoder.Encode(config)
if err != nil {
logger.Fatal(err)
}
}
func printConfig() {
logger.Debug("Loaded config:")
logger.Debug("Sync time: ", appConfig.SyncInterval)
logger.Debug("Should cache: ", appConfig.ShouldCache)
logger.Debug("Scripts: ", appConfig.Scripts)
}
func loadAppConfig() {
configPath := configdir.LocalConfig("rsslair")
err := configdir.MakePath(configPath)
if err != nil {
logger.Fatal(err)
}
if _, err := os.Stat(configPath + "/config.toml"); os.IsNotExist(err) {
logger.Info("Config file not found, creating default config")
createDefaultConfig(configPath)
}
file, err := os.Open(configPath + "/config.toml")
if err != nil {
logger.Fatal(err)
}
defer file.Close()
decoder := toml.NewDecoder(file)
err = decoder.Decode(&appConfig)
if err != nil {
logger.Fatal(err)
}
printConfig()
}

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package main
import (
"database/sql"
"fmt"
"strings"
"time"
_ "github.com/mattn/go-sqlite3"
lua "github.com/yuin/gopher-lua"
)
const luaDatabaseTypeName = "sqlite3"
var db *sql.DB
var databaseMethods = map[string]lua.LGFunction{
"check": check,
"insert": insert_rss,
"getRss": GetRssFromDb,
}
func registerDatabaseType(L *lua.LState) {
logger.Debug("Registering database type")
mt := L.NewTypeMetatable("sqlite3")
L.SetGlobal("sqlite3", mt)
L.SetField(mt, "__index", L.SetFuncs(L.NewTable(), databaseMethods))
// Create an instance of the database
ud := InitDb(L)
L.SetGlobal("db", ud)
}
// Check if the first lua argument is a *LUserData
func checkDatabase(L *lua.LState) *sql.DB {
ud := L.CheckUserData(1)
if v, ok := ud.Value.(*sql.DB); ok {
return v
}
L.ArgError(1, "sqlite3 expected")
return nil
}
// Constructor for new database userdata
func InitDb(L *lua.LState) *lua.LUserData {
ud := L.NewUserData()
// Create a database connection
database, err := sql.Open("sqlite3", "./rss.db")
if err != nil {
logger.Error("Error opening database: ", err)
} // Create the table with the rss schema if this is the first time
// TODO: Check if the table exists first
sqlStmt := `
CREATE TABLE IF NOT EXISTS rss (id INTEGER PRIMARY KEY, title TEXT, link TEXT, description TEXT, pubDate TEXT, guid TEXT UNIQUE, category TEXT, read INTEGER DEFAULT 0);
`
_, err = database.Exec(sqlStmt)
if err != nil {
logger.Error("Error creating table: ", err)
}
ud.Value = database // Store the database connection in the userdata
db = database
_CreateRSSFeedDbTable(db)
L.SetMetatable(ud, L.GetTypeMetatable(luaDatabaseTypeName)) // Set the metatable for the userdata
return ud // Return the number of values pushed onto the stack
}
func _CreateRSSFeedDbTable(db *sql.DB) {
// Create the table with the rss schema if this is the first time
sqlStmt := `
CREATE TABLE IF NOT EXISTS feed (id INTEGER PRIMARY KEY, title TEXT, link TEXT UNIQUE, description TEXT, lastSyncTime TEXT);
`
_, err := db.Exec(sqlStmt)
if err != nil {
logger.Error("Error creating table: ", err)
}
}
// TODO: Check for duplicate entries before inserting
func insert_rss(L *lua.LState) int {
if L.GetTop() != 2 {
L.ArgError(2, "Expected RSS table")
}
item := L.CheckUserData(2)
if item == nil {
return 0
}
ud := item.Value.(*RssItem)
// Insert the rss into the database
sqlStmt := `
INSERT INTO rss (title, link, description, pubDate, guid, category)
VALUES (?, ?, ?, ?, ?, ?)
`
_, err := db.Exec(sqlStmt, ud.Title, ud.Link, ud.Description, ud.PubDate, ud.Guid, ud.Category)
if err != nil && err.Error() != "UNIQUE constraint failed: rss.guid" {
logger.Error("Error inserting into table: ", err)
}
return 0
}
func GetRssFeed(link string) {
// Get the rss feed from the database
sqlStmt := `
SELECT title, link, description, lastSyncTime FROM feed WHERE link = ?
`
rows, err := db.Query(sqlStmt, link)
if err != nil {
logger.Error("Error querying table: ", err)
}
defer rows.Close()
for rows.Next() {
}
}
func check(L *lua.LState) int {
// Pass in a table of RSSItem
if L.GetTop() != 2 {
L.ArgError(2, "Expected RSS table")
}
items := L.CheckTable(2)
if items == nil {
return 0
}
// Create a map of the rss items
rssMap := make(map[string]*RssItem)
items.ForEach(func(_, value lua.LValue) {
item := value.(*lua.LUserData)
if v, ok := item.Value.(*RssItem); ok {
rssMap[v.Guid] = v
}
})
// SELECT * FROM your_table WHERE your_column_name IN (value1, value2, ..., valueN);
// Create a string with all the guids
guids := make([]string, 0, len(rssMap))
for guid := range rssMap {
id := fmt.Sprintf("%q", guid)
guids = append(guids, id)
}
values := strings.Join(guids, ",")
sqlStmt := `
SELECT guid FROM rss WHERE guid IN (` + values + `)
`
// Return to lua the values that do not exist in the database
rows, err := db.Query(sqlStmt)
if err != nil {
logger.Error("Error querying table: ", err)
}
// Create array to store the previous guids
prevGuids := make([]string, 0, len(rssMap))
defer rows.Close()
for rows.Next() {
var guid string
err = rows.Scan(&guid)
if err != nil {
logger.Error("Error scanning table: ", err)
}
prevGuids = append(prevGuids, guid)
delete(rssMap, guid)
}
table := L.NewTable()
prevTable := L.NewTable()
for _, v := range rssMap {
ud := L.NewUserData()
ud.Value = v
L.SetMetatable(ud, L.GetTypeMetatable(luaRSSItemTypeName))
table.Append(ud)
}
for _, v := range prevGuids {
prevTable.Append(lua.LString(v))
}
L.Push(prevTable)
L.Push(table)
return 2
}
func GetRssFromDb(L *lua.LState) int {
// Pass in a table of RSSItem
if L.GetTop() != 2 {
L.ArgError(2, "Expected RSS table")
}
items := L.CheckTable(2)
if items == nil {
return 0
}
// Create an array of the rss items
arr := make([]string, 0, items.Len())
items.ForEach(func(_, value lua.LValue) {
item := value.String()
id := fmt.Sprintf("%q", item)
arr = append(arr, id)
})
values := strings.Join(arr, ",")
sqlStmt := `
SELECT title, link, description, pubDate, guid, category FROM rss WHERE guid IN (` + values + `)
`
rows, err := db.Query(sqlStmt)
if err != nil {
logger.Error("Error querying table: ", err)
}
table := L.NewTable()
defer rows.Close()
for rows.Next() {
item := RssItem{}
err = rows.Scan(&item.Title, &item.Link, &item.Description, &item.PubDate, &item.Guid, &item.Category)
// TODO: Handle this error better
if err != nil {
logger.Error("Error scanning table: ", err)
}
ud := L.NewUserData()
ud.Value = &item
L.SetMetatable(ud, L.GetTypeMetatable(luaRSSItemTypeName))
table.Append(ud)
}
L.Push(table)
return 1
}
func get_rss_entry(L *lua.LState) int {
if L.GetTop() != 2 {
L.ArgError(2, "Expected RSS table")
}
// This function should only be getting data from the database
return 0
}
func get_rss_feed(url string) RssFeed {
logger.Trace("===Executing get_rss_feed for url: ", url, "===")
// Get the rss feed from the database
sqlStmt := `
SELECT title, link, description, lastSyncTime FROM feed WHERE link = ?
`
rows, err := db.Query(sqlStmt, url)
if err != nil {
logger.Error("Error querying table: ", err)
}
var rssFeed RssFeed
defer rows.Close()
for rows.Next() {
err = rows.Scan(&rssFeed.Title, &rssFeed.Link, &rssFeed.Content, &rssFeed.LastSyncTime)
if err != nil {
logger.Error("Error scanning table: ", err)
}
}
return rssFeed
}
func insert_rss_feed(rssFeed RssFeed) {
sqlStmt := `
INSERT INTO feed (title, link, description, lastSyncTime)
VALUES (?, ?, ?, ?)
`
_, err := db.Exec(sqlStmt, rssFeed.Title, rssFeed.Link, rssFeed.Content, rssFeed.LastSyncTime)
if err != nil && err.Error() != "UNIQUE constraint failed: feed.link" {
logger.Error("Error inserting into table: ", err)
}
}
func update_rss_feed(rssFeed RssFeed) {
sqlStmt := `
UPDATE feed SET description = ?, lastSyncTime = ? WHERE link = ?
`
_, err := db.Exec(sqlStmt, rssFeed.Content, rssFeed.LastSyncTime, rssFeed.Link)
if err != nil {
logger.Error("Error updating table: ", err)
}
}
func DoesRssFeedExist(link string) bool {
sqlStmt := `
SELECT EXISTS(SELECT 1 FROM feed WHERE link = ? LIMIT 1)
`
rows, err := db.Query(sqlStmt, link)
if err != nil {
logger.Error("Error querying table: ", err)
}
var exists bool
defer rows.Close()
for rows.Next() {
err = rows.Scan(&exists)
if err != nil {
logger.Error("Error scanning table: ", err)
}
}
return exists
}
func GetLastSyncTime(link string) (time.Time, error) {
sqlStmt := `
SELECT lastSyncTime FROM feed WHERE link = ?
`
rows, err := db.Query(sqlStmt, link)
if err != nil {
logger.Error("Error querying table: ", err)
}
var lastSyncTime string
defer rows.Close()
for rows.Next() {
err = rows.Scan(&lastSyncTime)
if err != nil {
logger.Error("Error scanning table: ", err)
}
}
return time.Parse(time.RFC3339, lastSyncTime)
}
func CloseDb() {
logger.Debug("Closing database")
err := db.Close()
if err != nil {
logger.Error("Error closing database: ", err)
}
}

12
docker-compose.yml Normal file
View File

@ -0,0 +1,12 @@
version: "3.5"
services:
rsslair:
image: gitea.lan/christopher/rsslair
container_name: rsslair
ports:
- 8080:8080
volumes:
- ./rss.db:/app/rss.db
environment:
- LOG_LEVEL=debug
restart: unless-stopped

48
go.mod Normal file
View File

@ -0,0 +1,48 @@
module github.com/christopher876/rsslair
go 1.21.0
toolchain go1.21.5
require (
github.com/PuerkitoBio/goquery v1.8.1
github.com/banzaicloud/logrus-runtime-formatter v0.0.0-20190729070250-5ae5475bae5e
github.com/mattn/go-sqlite3 v1.14.19
github.com/sirupsen/logrus v1.9.3
github.com/yuin/gopher-lua v1.1.1
)
require (
github.com/17xande/configdir v0.0.0-20230822134354-9441875917e7 // indirect
github.com/BurntSushi/toml v1.2.1 // indirect
github.com/andybalholm/cascadia v1.3.1 // indirect
github.com/antchfx/htmlquery v1.2.3 // indirect
github.com/antchfx/xmlquery v1.2.4 // indirect
github.com/antchfx/xpath v1.1.8 // indirect
github.com/barkimedes/go-deepcopy v0.0.0-20220514131651-17c30cfc62df // indirect
github.com/gobwas/glob v0.2.3 // indirect
github.com/gocolly/colly/v2 v2.1.0 // indirect
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
github.com/golang/protobuf v1.4.2 // indirect
github.com/google/go-cmp v0.5.9 // indirect
github.com/kennygrant/sanitize v1.2.4 // indirect
github.com/pelletier/go-toml v1.9.5 // indirect
github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca // indirect
github.com/sergi/go-diff v1.1.0 // indirect
github.com/temoto/robotstxt v1.1.1 // indirect
golang.org/x/exp/typeparams v0.0.0-20221212164502-fae10dda9338 // indirect
golang.org/x/mod v0.14.0 // indirect
golang.org/x/net v0.16.0 // indirect
golang.org/x/sync v0.4.0 // indirect
golang.org/x/sys v0.15.0 // indirect
golang.org/x/telemetry v0.0.0-20231114163143-69313e640400 // indirect
golang.org/x/term v0.15.0 // indirect
golang.org/x/text v0.13.0 // indirect
golang.org/x/tools v0.14.1-0.20231114185516-c9d3e7de13fd // indirect
golang.org/x/vuln v1.0.1 // indirect
google.golang.org/appengine v1.6.6 // indirect
google.golang.org/protobuf v1.24.0 // indirect
honnef.co/go/tools v0.4.5 // indirect
mvdan.cc/gofumpt v0.4.0 // indirect
mvdan.cc/xurls/v2 v2.4.0 // indirect
)

210
go.sum Normal file
View File

@ -0,0 +1,210 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
github.com/17xande/configdir v0.0.0-20230822134354-9441875917e7 h1:C5wjx8RnxNpSCQjMX4NWfeWjkmlaRWk1Sr/fQ0dR4oI=
github.com/17xande/configdir v0.0.0-20230822134354-9441875917e7/go.mod h1:QdroZvxv+xvY8TtnEFTdH+IxNyiEO59JJpfKjTX74+E=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
github.com/PuerkitoBio/goquery v1.5.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
github.com/PuerkitoBio/goquery v1.8.1 h1:uQxhNlArOIdbrH1tr0UXwdVFgDcZDrZVdcpygAcwmWM=
github.com/PuerkitoBio/goquery v1.8.1/go.mod h1:Q8ICL1kNUJ2sXGoAhPGUdYDJvgQgHzJsnnd3H7Ho5jQ=
github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
github.com/andybalholm/cascadia v1.2.0/go.mod h1:YCyR8vOZT9aZ1CHEd8ap0gMVm2aFgxBp0T0eFw1RUQY=
github.com/andybalholm/cascadia v1.3.1 h1:nhxRkql1kdYCc8Snf7D5/D3spOX+dBgjA6u8x004T2c=
github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEqc0Sk8XGwHqvA=
github.com/antchfx/htmlquery v1.2.3 h1:sP3NFDneHx2stfNXCKbhHFo8XgNjCACnU/4AO5gWz6M=
github.com/antchfx/htmlquery v1.2.3/go.mod h1:B0ABL+F5irhhMWg54ymEZinzMSi0Kt3I2if0BLYa3V0=
github.com/antchfx/xmlquery v1.2.4 h1:T/SH1bYdzdjTMoz2RgsfVKbM5uWh3gjDYYepFqQmFv4=
github.com/antchfx/xmlquery v1.2.4/go.mod h1:KQQuESaxSlqugE2ZBcM/qn+ebIpt+d+4Xx7YcSGAIrM=
github.com/antchfx/xpath v1.1.6/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk=
github.com/antchfx/xpath v1.1.8 h1:PcL6bIX42Px5usSx6xRYw/wjB3wYGkj0MJ9MBzEKVgk=
github.com/antchfx/xpath v1.1.8/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk=
github.com/banzaicloud/logrus-runtime-formatter v0.0.0-20190729070250-5ae5475bae5e h1:ZOnKnYG1LLgq4W7wZUYj9ntn3RxQ65EZyYqdtFpP2Dw=
github.com/banzaicloud/logrus-runtime-formatter v0.0.0-20190729070250-5ae5475bae5e/go.mod h1:hEvEpPmuwKO+0TbrDQKIkmX0gW2s2waZHF8pIhEEmpM=
github.com/barkimedes/go-deepcopy v0.0.0-20220514131651-17c30cfc62df h1:GSoSVRLoBaFpOOds6QyY1L8AX7uoY+Ln3BHc22W40X0=
github.com/barkimedes/go-deepcopy v0.0.0-20220514131651-17c30cfc62df/go.mod h1:hiVxq5OP2bUGBRNS3Z/bt/reCLFNbdcST6gISi1fiOM=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y=
github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=
github.com/gocolly/colly v1.2.0 h1:qRz9YAn8FIH0qzgNUw+HT9UN7wm1oF9OBAilwEWpyrI=
github.com/gocolly/colly v1.2.0/go.mod h1:Hof5T3ZswNVsOHYmba1u03W65HDWgpV5HifSuueE0EA=
github.com/gocolly/colly/v2 v2.1.0 h1:k0DuZkDoCsx51bKpRJNEmcxcp+W5N8ziuwGaSDuFoGs=
github.com/gocolly/colly/v2 v2.1.0/go.mod h1:I2MuhsLjQ+Ex+IzK3afNS8/1qP3AedHOusRPcRdC5o0=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e h1:1r7pUrabqp18hOBcwBwiTsbnFeTZHV9eER/QT5JVZxY=
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/jawher/mow.cli v1.1.0/go.mod h1:aNaQlc7ozF3vw6IJ2dHjp2ZFiA4ozMIYY6PyuRJwlUg=
github.com/kennygrant/sanitize v1.2.4 h1:gN25/otpP5vAsO2djbMhF/LQX6R7+O1TB4yv8NzpJ3o=
github.com/kennygrant/sanitize v1.2.4/go.mod h1:LGsjYYtgxbetdg5owWB2mpgUL6e2nfw2eObZ0u0qvak=
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/mattn/go-sqlite3 v1.14.19 h1:fhGleo2h1p8tVChob4I9HpmVFIAkKGpiukdrgQbWfGI=
github.com/mattn/go-sqlite3 v1.14.19/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
github.com/pelletier/go-toml v1.9.5 h1:4yBQzkHv+7BHq2PQUZF3Mx0IYxG7LsP222s7Agd3ve8=
github.com/pelletier/go-toml v1.9.5/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
github.com/rogpeppe/go-internal v1.8.1/go.mod h1:JeRgkft04UBgHMgCIwADu4Pn6Mtm5d4nPKWu0nJ5d+o=
github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca h1:NugYot0LIVPxTvN8n+Kvkn6TrbMyxQiuvKdEwFdR9vI=
github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca/go.mod h1:uugorj2VCxiV1x+LzaIdVa9b4S4qGAcH6cbhh4qVxOU=
github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/temoto/robotstxt v1.1.1 h1:Gh8RCs8ouX3hRSxxK7B1mO5RFByQ4CmJZDwgom++JaA=
github.com/temoto/robotstxt v1.1.1/go.mod h1:+1AmkuG3IYkh1kv0d2qEB9Le88ehNO0zwOr3ujewlOo=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
github.com/yuin/gopher-lua v1.1.1 h1:kYKnWBjvbNP4XLT3+bPEwAXJx262OhaHDWDVOPjL46M=
github.com/yuin/gopher-lua v1.1.1/go.mod h1:GBR0iDaNXjAgGg9zfCvksxSRnQx76gclCIb7kdAd1Pw=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp/typeparams v0.0.0-20221212164502-fae10dda9338 h1:2O2DON6y3XMJiQRAS1UWU+54aec2uopH3x7MAiqGW6Y=
golang.org/x/exp/typeparams v0.0.0-20221212164502-fae10dda9338/go.mod h1:AbB0pIl9nAr9wVwH+Z2ZpaocVmF5I4GyWCDIsVjR0bk=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/mod v0.14.0 h1:dGoOF9QVLYng8IHTm7BAyWqCqSheQ5pYWGhzW00YJr0=
golang.org/x/mod v0.14.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200421231249-e086a090c8fd/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
golang.org/x/net v0.0.0-20200602114024-627f9648deb9/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20210916014120-12bc252f5db8/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/net v0.16.0 h1:7eBu7KsSvFDtSXUIDbh3aqlK4DPsZ1rByC8PFfBThos=
golang.org/x/net v0.16.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.4.0 h1:zxkM55ReGkDlKSM+Fu41A+zmbZuaPVbGMzvvdUPznYQ=
golang.org/x/sync v0.4.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/telemetry v0.0.0-20231114163143-69313e640400 h1:brbkEFfGwNGAEkykUOcryE/JiHUMMJouzE0fWWmz/QU=
golang.org/x/telemetry v0.0.0-20231114163143-69313e640400/go.mod h1:P6hMdmAcoG7FyATwqSr6R/U0n7yeXNP/QXeRlxb1szE=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.14.1-0.20231114185516-c9d3e7de13fd h1:Oku7E+OCrXHyst1dG1z10etCTxewCHXNFLRlyMPbh3w=
golang.org/x/tools v0.14.1-0.20231114185516-c9d3e7de13fd/go.mod h1:uYBEerGOWcJyEORxN+Ek8+TT266gXkNlHdJBwexUsBg=
golang.org/x/tools/gopls v0.14.2 h1:sIw6vjZiuQ9S7s0auUUkHlWgsCkKZFWDHmrge8LYsnc=
golang.org/x/tools/gopls v0.14.2/go.mod h1:o2s+suLlFye+MHxEofsxJPkBQ/kT/ucP4iJV3ohjGEQ=
golang.org/x/vuln v1.0.1 h1:KUas02EjQK5LTuIx1OylBQdKKZ9jeugs+HiqO5HormU=
golang.org/x/vuln v1.0.1/go.mod h1:bb2hMwln/tqxg32BNY4CcxHWtHXuYa3SbIBmtsyjxtM=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/appengine v1.6.6 h1:lMO5rYAqUxkmaj76jAkRUvt5JZgFymx/+Q5Mzfivuhc=
google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.24.0 h1:UhZDfRO8JRQru4/+LlLE0BRKGF8L+PICnvYZmx/fEGA=
google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.4.5 h1:YGD4H+SuIOOqsyoLOpZDWcieM28W47/zRO7f+9V3nvo=
honnef.co/go/tools v0.4.5/go.mod h1:GUV+uIBCLpdf0/v6UhHHG/yzI/z6qPskBeQCjcNB96k=
mvdan.cc/gofumpt v0.4.0 h1:JVf4NN1mIpHogBj7ABpgOyZc65/UUOkKQFkoURsz4MM=
mvdan.cc/gofumpt v0.4.0/go.mod h1:PljLOHDeZqgS8opHRKLzp2It2VBuSdteAgqUfzMTxlQ=
mvdan.cc/xurls/v2 v2.4.0 h1:tzxjVAj+wSBmDcF6zBB7/myTy3gX9xvi8Tyr28AuQgc=
mvdan.cc/xurls/v2 v2.4.0/go.mod h1:+GEjq9uNjqs8LQfM9nVnM8rff0OQ5Iash5rzX+N1CSg=

171
html_parser.go Normal file
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@ -0,0 +1,171 @@
package main
import (
"strings"
"github.com/PuerkitoBio/goquery"
lua "github.com/yuin/gopher-lua"
)
type HtmlParser struct {
Doc *goquery.Document
}
const luaHtmlParserTypeName = "html"
var luaHtmlParserMethods = map[string]lua.LGFunction{
"select": select_html_node,
"remove": remove_html_node,
"get": get_document,
"get_attribute": get_html_node_attribute,
"rewrite_nodes": rewrite_html_nodes,
}
func registerHtmlParserType(L *lua.LState) {
logger.Debug("Registering html type")
mt := L.NewTypeMetatable(luaHtmlParserTypeName)
L.SetGlobal(luaHtmlParserTypeName, mt)
L.SetField(mt, "new", L.NewFunction(newHtmlParser))
L.SetField(mt, "__index", L.SetFuncs(L.NewTable(), luaHtmlParserMethods))
}
func checkHtmlParser(L *lua.LState) *HtmlParser {
ud := L.CheckUserData(1)
if v, ok := ud.Value.(*HtmlParser); ok {
return v
}
L.ArgError(1, "html_parser expected")
return nil
}
func newHtmlParser(L *lua.LState) int {
source := L.CheckString(1)
doc, err := goquery.NewDocumentFromReader(strings.NewReader(source))
if err != nil {
logger.Error(err)
return 0
}
// Return doc as userdata
ud := L.NewUserData()
ud.Value = doc
L.SetMetatable(ud, L.GetTypeMetatable(luaHtmlParserTypeName))
L.Push(ud)
return 1;
}
func select_html_node(L *lua.LState) int {
ud := L.CheckUserData(1)
selector := L.CheckString(2)
doc, ok := ud.Value.(*goquery.Document)
if !ok {
logger.Error("Expected html_parser userdata")
return 0
}
var result []string
doc.Find(selector).Each(func(_ int, s *goquery.Selection) {
pHtml, err := s.Html()
if err != nil {
logger.Error(err)
return
}
result = append(result, pHtml)
})
L.Push(lua.LString(strings.Join(result, "\n")))
return 1
}
func remove_html_node(L *lua.LState) int {
ud := L.CheckUserData(1)
selector := L.CheckString(2)
doc, ok := ud.Value.(*goquery.Document)
if !ok {
logger.Error("Expected html_parser userdata")
return 0
}
doc.Find(selector).Each(func(_ int, s *goquery.Selection) {
s.Remove()
})
return 0
}
func get_html_node_attribute(L *lua.LState) int {
// Get the node, for example <img src="local/image.jpg"> -> <img src="http://example.com/image.jpg">
// Get the attribute, src
ud := L.CheckUserData(1)
node := L.CheckString(2)
attribute := L.CheckString(3)
doc, ok := ud.Value.(*goquery.Document)
if !ok {
logger.Error("Expected html_parser userdata")
return 0
}
result := []string{}
doc.Find(node).Each(func(_ int, s *goquery.Selection) {
pHtml, ok := s.Attr(attribute)
if !ok {
logger.Error("Could not find attribute: ", attribute, " in node: ", node)
return
}
result = append(result, pHtml)
})
table := L.NewTable()
for i := range result {
table.Append(lua.LString(result[i]))
}
L.Push(table)
return 1
}
// article:rewrite("img", "src", {"http://example.com/image.jpg", "http://example.com/image2.jpg"})
func rewrite_html_nodes(L *lua.LState) int {
// Get the node, for example <img src="local/image.jpg"> -> <img src="http://example.com/image.jpg">
// Get the attribute, src
ud := L.CheckUserData(1)
node := L.CheckString(2)
attribute := L.CheckString(3)
rewriteArr := L.CheckTable(4)
doc, ok := ud.Value.(*goquery.Document)
if !ok {
logger.Error("Expected html_parser userdata")
}
rewriteStrings := []string{}
for i := 1; i <= rewriteArr.Len(); i++ {
rewriteStrings = append(rewriteStrings, rewriteArr.RawGetInt(i).String())
}
i := 0
doc.Find(node).Each(func(_ int, s *goquery.Selection) {
rewrite := rewriteStrings[i]
s.SetAttr(attribute, rewrite)
logger.Debug("Rewrote: ", attribute, " to: ", rewrite)
i++
})
return 0
}
func get_document(L *lua.LState) int {
ud := L.CheckUserData(1)
doc, ok := ud.Value.(*goquery.Document)
if !ok {
logger.Error("Expected html_parser userdata")
return 0
}
html, err := doc.Html()
if err != nil {
logger.Error(err)
return 0
}
L.Push(lua.LString(html))
return 1
}

257
lua.go Normal file
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@ -0,0 +1,257 @@
package main
import (
"encoding/xml"
"io"
"net/http"
"os"
"path/filepath"
"sort"
"strings"
lua "github.com/yuin/gopher-lua"
)
func InitLua() *lua.LState {
logger.Info("Initializing lua")
L := lua.NewState()
// load_log_library(L)
bind_lua_functions(L)
LoadScripts(L)
return L
}
func LoadLogFunctions(L *lua.LState) {
table := L.NewTable()
L.SetFuncs(table, map[string]lua.LGFunction{
"info": luaLogInfo,
"debug": luaLogDebug,
"error": luaLogError,
"fatal": luaLogFatal,
})
L.SetGlobal("log", table)
}
func loadScript(L *lua.LState, script string) error {
if err := L.DoFile(script); err != nil {
logger.Fatal(err)
return err
}
logger.Debug("Loaded script: ", script)
return nil
}
func LoadScripts(L *lua.LState) error {
// iterate over the scripts directory and load each script
files, err := os.ReadDir("scripts")
if err != nil {
logger.Fatal(err)
return err
}
loadAllScripts := appConfig.Scripts[0] == "all" || appConfig.Scripts[0] == ""
if loadAllScripts {
for _, file := range files {
var extension = filepath.Ext(file.Name())
if file.IsDir() || extension != ".lua" {
continue
}
if err := loadScript(L, "scripts/"+file.Name()); err != nil {
logger.Fatal(err)
return err
}
}
} else {
for _, script := range appConfig.Scripts {
if err := loadScript(L, "scripts/"+script+".lua"); err != nil {
logger.Fatal(err)
return err
}
}
}
return nil
}
func execute_route(L *lua.LState, route string, script string) (string, error) {
logger.Debug("Executing route: ", route)
// Get table by script name
table := L.GetGlobal(script)
// Get the function from the table
fn := L.GetField(table, "route")
// TODO: The message should say something else
if fn.Type() != lua.LTFunction {
logger.Error("route function was not found in script: ", script)
return "", nil
}
if err := L.CallByParam(lua.P{
Fn: fn,
NRet: 1,
Protect: true,
}); err != nil {
logger.Error(err)
return "", err
}
ret := L.Get(-1)
responses[route] = strings.Clone(ret.String())
return ret.String(), nil
}
func add_html_parser(L *lua.LState) int {
// Create a table for the html_parser add_functions
html_table := L.NewTable()
L.SetFuncs(html_table, map[string]lua.LGFunction{
"parse": newHtmlParser,
"select": select_html_node,
})
L.Push(html_table)
return 1
}
func bind_lua_functions(L *lua.LState) error {
// Add global functions to lua
LoadLogFunctions(L)
L.SetGlobal("add_route", L.NewFunction(lua_add_route))
L.SetGlobal("get", L.NewFunction(get_request))
L.SetGlobal("parse_xml_feed", L.NewFunction(parse_xml_feed))
L.SetGlobal("create_rss_feed", L.NewFunction(create_rss_feed))
// Register Golang structs with lua
registerDatabaseType(L)
registerRSSItemType(L)
registerHtmlParserType(L)
registerRssImageType(L)
return nil
}
func lua_add_route(L *lua.LState) int {
// TODO: Check that the parameters are correct
// Handle errors
script := L.ToString(1)
route := L.ToString(2)
table := L.NewTable()
L.SetGlobal(script, table)
routes[route] = script
responses[route] = ""
logger.Debug("Adding route: ", route, " -> ", script)
return 0
}
func get_request(L *lua.LState) int {
url := L.ToString(1)
logger.Debug("GET: ", url)
resp, err := http.Get(url)
if err != nil {
logger.Error(err)
return 0
}
body, err := io.ReadAll(resp.Body)
if err != nil {
logger.Fatal(err)
return 0
}
L.Push(lua.LString(string(body)))
return 1
}
func parse_xml_feed(L *lua.LState) int {
xml_str := L.ToString(1)
var rss RssRoot
err := xml.Unmarshal([]byte(xml_str), &rss)
if err != nil {
logger.Fatal(err)
return 0
}
feed_items := L.NewTable()
items := rss.Channel.Items
for i := range items {
ud := L.NewUserData()
ud.Value = &items[i]
L.SetMetatable(ud, L.GetTypeMetatable(luaRSSItemTypeName))
feed_items.Append(ud)
}
L.Push(feed_items)
return 1
}
// TODO: Move this into the rss table
func create_rss_feed(L *lua.LState) int {
//TODO: Check that the parameters are correct
feed := RssRoot{}
//TODO: Bind RssImage to lua and pass it in
// Also needs to be added to the database and then re-served through the server
title := L.CheckString(1)
link := L.CheckString(2)
image := L.CheckUserData(3)
// TODO: Channel needs to also be passed in
feed.Channel = RssChannel{
Title: title,
Image: *image.Value.(*RssImage),
Link: link,
}
// Append the items to the feed
// Notably the <channel> tag as <item>s
entries := L.CheckTable(4)
if entries.Len() == 0 {
logger.Error("No entries to create rss feed found in table")
return 0
}
for i := 1; i <= entries.Len(); i++ {
entry := entries.RawGetInt(i)
ud := entry.(*lua.LUserData)
item := ud.Value.(*RssItem)
feed.Channel.Items = append(feed.Channel.Items, *item)
}
// sort by date
sort.Sort(ByPubDate(feed.Channel.Items))
output, err := xml.MarshalIndent(feed, "", " ")
if err != nil {
logger.Fatal(err)
return 0
}
L.Push(lua.LString(string(output)))
return 1
}
func luaLogInfo(L *lua.LState) int {
loc := L.Where(1)
msg := L.ToString(1)
logger.Info(loc, msg)
return 0
}
func luaLogDebug(L *lua.LState) int {
// Get the where and message
loc := L.Where(1)
msg := L.ToString(1)
logger.Debug(loc, msg)
return 0
}
func luaLogError(L *lua.LState) int {
loc := L.Where(1)
msg := L.ToString(1)
logger.Error(loc, msg)
return 0
}
func luaLogFatal(L *lua.LState) int {
loc := L.Where(1)
msg := L.ToString(1)
logger.Fatal(loc, msg)
return 0
}

141
main.go Normal file
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package main
import (
"context"
"fmt"
"io"
"os"
"os/exec"
"os/signal"
"strings"
"syscall"
"time"
runtime "github.com/banzaicloud/logrus-runtime-formatter"
"github.com/sirupsen/logrus"
)
var logger = logrus.New()
var appConfig AppConfig
// TODO: This function needs to be refactored
func setLogLevel() {
level := os.Getenv("LOG_LEVEL")
verbosity := os.Getenv("VERBOSE")
if verbosity == "1" {
formatter := runtime.Formatter{ChildFormatter: &logrus.TextFormatter{
FullTimestamp: true,
}}
formatter.Line = true
logger.SetFormatter(&formatter)
}
//TODO: This should be in its own function
logFile, err := os.OpenFile("rsslair.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
if err != nil {
logger.Fatal(err)
}
mw := io.MultiWriter(os.Stdout, logFile)
logger.SetOutput(mw)
switch strings.ToLower(level) {
case "debug":
logger.SetLevel(logrus.DebugLevel)
case "info":
logger.SetLevel(logrus.InfoLevel)
case "warn":
logger.SetLevel(logrus.WarnLevel)
case "error":
logger.SetLevel(logrus.ErrorLevel)
case "trace":
logger.SetLevel(logrus.TraceLevel)
default:
logger.SetLevel(logrus.InfoLevel)
}
}
func main() {
setLogLevel()
loadAppConfig()
lua := InitLua()
defer CloseDb()
defer lua.Close()
// Create a channel to listen for signals
// Listen for SIGINT and SIGTERM
sig_channel := make(chan os.Signal, 1)
signal.Notify(sig_channel, os.Interrupt, syscall.SIGTERM)
address := "0.0.0.0"
port := "8080"
server := start_server(address, port, lua)
// TODO: Make this look nice
// Create channel to listen for input
go func() {
// disable input buffering
exec.Command("stty", "-F", "/dev/tty", "cbreak", "min", "1").Run()
// do not display entered characters on the screen
exec.Command("stty", "-F", "/dev/tty", "-echo").Run()
// restore the echoing state when exiting
defer exec.Command("stty", "-F", "/dev/tty", "echo").Run()
var b = make([]byte, 1)
for {
os.Stdin.Read(b)
switch char := string(b); char {
case "r":
fmt.Println("Reloading scripts")
routes = make(map[string]string)
LoadScripts(lua)
case "s":
fmt.Println("Executing lua scripts")
execute_all_routes(lua)
case "d":
fmt.Println("Dumping response data")
for k, v := range responses {
leng := len(v)
if leng > 30 {
leng = 30
} else if leng == 0 {
fmt.Println(k, "No response data")
continue
}
msg := v[:leng]
fmt.Println(k, msg)
}
}
}
}()
execute_all_routes(lua)
// TODO: Make this look nice in an actual function
hasRun := false
luaExecutionTimer := time.NewTicker(30 * time.Second)
go func() {
for {
select {
case <-luaExecutionTimer.C:
now := time.Now()
if now.Minute() == 55 && !hasRun {
hasRun = true
execute_all_routes(lua)
break
}
hasRun = false
}
}
}()
<-sig_channel // Block until SIGINT or SIGTERM is received
logger.Info("Shutting down now")
if err := server.Shutdown(context.TODO()); err != nil {
logger.Fatal("Error shutting down server: ", err)
}
}

32
router.go Normal file
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package main
import (
"net/http"
lua "github.com/yuin/gopher-lua"
)
var routes = make(map[string]string)
var responses = make(map[string]string)
func execute_all_routes(L *lua.LState) {
logger.Debug("Executing all scripts")
for path, script := range routes {
logger.Trace("Executing route: ", path)
execute_route(L, path, script)
}
}
func route(L *lua.LState, request *http.Request) (string, int) {
path := request.URL.Path
// Check if the path is in the routes map
if _, ok := routes[path]; !ok {
return "", http.StatusNotFound
}
// response, _ := execute_route(L, routes[path])
// TODO: This needs to actually get the right base path
response := responses[path]
return response, 200
}

382
rss_feed.go Normal file
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package main
import (
"encoding/xml"
"io"
"net/http"
"time"
lua "github.com/yuin/gopher-lua"
)
type RssFeed struct {
Title string // This is the title of the rss feed
Link string // This is the link to original rss feed (if available)
Content string // This contains the entire rss xml
LastSyncTime string // This is the last time the rss feed was synced
}
type RssRoot struct {
XMLName xml.Name `xml:"rss"`
Channel RssChannel `xml:"channel"`
}
type RssChannel struct {
Title string `xml:"title"`
Link string `xml:"link"`
Description string `xml:"description"`
Image RssImage `xml:"image"`
Items []RssItem `xml:"item"`
}
type RssItem struct {
Title string `xml:"title"`
Link string `xml:"link"`
Description string `xml:"description"`
Category string `xml:"category"`
Guid string `xml:"guid"`
PubDate string `xml:"pubDate"`
}
type RssImage struct {
Url string `xml:"url"`
Title string `xml:"title"`
Link string `xml:"link"`
}
const luaRSSGlobalTable = "rss"
const luaRSSItemTypeName = "RssItem"
const luaRSSImageTypeName = "RssImage"
var luaRSSItemMethods = map[string]lua.LGFunction{
"title": getSetRssItemTitle,
"link": getSetRssItemLink,
"description": getSetRssItemDescription,
"category": getSetRssItemCategory,
"guid": getSetRssItemGuid,
"pubDate": getSetRssItemPubDate,
}
var luaRSSImageMethods = map[string]lua.LGFunction{
"title": getSetRssImageTitle,
"url": getSetRssImageUrl,
"link": getSetRssImageLink,
}
func registerRSSItemType(L *lua.LState) {
logger.Debug("Registering RssItem type")
mt := L.NewTypeMetatable(luaRSSItemTypeName)
L.SetGlobal(luaRSSItemTypeName, mt)
L.SetField(mt, "new", L.NewFunction(newRSSItem))
L.SetField(mt, "__index", L.SetFuncs(L.NewTable(), luaRSSItemMethods))
// Create a global table called "rss"
// This table will contain all of the rss helper functions
rssTable := L.NewTable()
L.SetGlobal(luaRSSGlobalTable, rssTable)
L.SetField(rssTable, "get", L.NewFunction(getRssFeedHttp))
L.SetField(rssTable, "merge", L.NewFunction(mergeRssItems))
L.SetField(rssTable, "limit", L.NewFunction(limitRssItems))
L.SetField(rssTable, "generate", L.NewFunction(generateRssFeed))
}
func registerRssImageType(L *lua.LState) {
logger.Debug("Registering RssImage type")
mt := L.NewTypeMetatable(luaRSSImageTypeName)
L.SetGlobal(luaRSSImageTypeName, mt)
L.SetField(mt, "new", L.NewFunction(newRSSImage))
L.SetField(mt, "__index", L.SetFuncs(L.NewTable(), luaRSSImageMethods))
}
func newRSSImage(L *lua.LState) int {
ud := L.NewUserData()
if L.GetTop() != 3 {
L.ArgError(3, "Expected 3 arguments")
return 0
}
// TODO: Handle the error better
title := L.CheckString(1)
url := L.CheckString(2)
link := L.CheckString(3)
item := RssImage{
Url: url,
Title: title,
Link: link,
}
ud.Value = &item
L.SetMetatable(ud, L.GetTypeMetatable(luaRSSImageTypeName))
L.Push(ud)
return 1
}
func checkRSSImage(L *lua.LState) *RssImage {
ud := L.CheckUserData(1)
if v, ok := ud.Value.(*RssImage); ok {
return v
}
L.ArgError(1, "RssImage expected")
return nil
}
func getSetRssImageTitle(L *lua.LState) int {
i := checkRSSImage(L)
if L.GetTop() == 2 {
i.Title = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.Title))
return 1
}
func getSetRssImageUrl(L *lua.LState) int {
i := checkRSSImage(L)
if L.GetTop() == 2 {
i.Url = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.Url))
return 1
}
func getSetRssImageLink(L *lua.LState) int {
i := checkRSSImage(L)
if L.GetTop() == 2 {
i.Link = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.Link))
return 1
}
func checkRSSItem(L *lua.LState) *RssItem {
ud := L.CheckUserData(1)
if v, ok := ud.Value.(*RssItem); ok {
return v
}
L.ArgError(1, "RssItem expected")
return nil
}
func newRSSItem(L *lua.LState) int {
ud := L.NewUserData()
if L.GetTop() != 1 {
L.ArgError(1, "Expected 1 argument")
return 0
}
item := L.CheckUserData(1)
ud.Value = item
L.SetMetatable(ud, L.GetTypeMetatable(luaRSSItemTypeName))
L.Push(ud)
return 1
}
// Getters and setters for the RssItem type
func getSetRssItemTitle(L *lua.LState) int {
i := checkRSSItem(L)
if L.GetTop() == 2 {
i.Title = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.Title))
return 1
}
func getSetRssItemLink(L *lua.LState) int {
i := checkRSSItem(L)
if L.GetTop() == 2 {
i.Link = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.Link))
return 1
}
func getSetRssItemDescription(L *lua.LState) int {
i := checkRSSItem(L)
if L.GetTop() == 2 {
i.Description = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.Description))
return 1
}
func getSetRssItemCategory(L *lua.LState) int {
i := checkRSSItem(L)
if L.GetTop() == 2 {
i.Category = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.Category))
return 1
}
func getSetRssItemGuid(L *lua.LState) int {
i := checkRSSItem(L)
if L.GetTop() == 2 {
i.Guid = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.Guid))
return 1
}
func getSetRssItemPubDate(L *lua.LState) int {
i := checkRSSItem(L)
if L.GetTop() == 2 {
i.PubDate = L.CheckString(2)
return 0
}
L.Push(lua.LString(i.PubDate))
return 1
}
func ParseRssFeed(body string) *RssRoot {
var rss RssRoot
err := xml.Unmarshal([]byte(body), &rss)
if err != nil {
logger.Fatal(err)
return nil
}
return &rss
}
func GetHTTPRequest(url string) string {
logger.Debug("GET: ", url)
resp, err := http.Get(url)
if err != nil {
logger.Error(err)
return ""
}
body, err := io.ReadAll(resp.Body)
if err != nil {
logger.Fatal(err)
return ""
}
return string(body)
}
func getRssFeedHttp(L *lua.LState) int {
if L.GetTop() != 2 {
L.ArgError(1, "Expected 1 argument")
return 0
}
// Get the url from the first argument
url := L.CheckString(2)
// Check if the rss feed exists in the database
var ret string
currentTime := time.Now().UTC()
if !appConfig.ShouldCache {
// If the cache option is disabled, then always fetch the latest entries from the website
logger.Debug("Cache option is disabled. Syncing: ", url)
body := GetHTTPRequest(url)
L.Push(lua.LString(body))
return 1
}
// TODO: There might be some cleanup opportunities here
if !DoesRssFeedExist(url) {
// If it does not exist in the database, then get the latest entries from the website and insert them into the database
logger.Debug("Rss feed does not exist in database. Syncing for the first time: ", url)
body := GetHTTPRequest(url)
feed := ParseRssFeed(body)
rssFeed := RssFeed{
Title: feed.Channel.Title,
Link: url,
Content: string(body),
LastSyncTime: currentTime.Format(time.RFC3339),
}
insert_rss_feed(rssFeed)
ret = body
} else {
logger.Debug("Rss feed exists in database but sync is required: ", url)
body := GetHTTPRequest(url)
feed := ParseRssFeed(body)
rssFeed := RssFeed{
Title: feed.Channel.Title,
Link: url,
Content: string(body),
LastSyncTime: currentTime.Format(time.RFC3339),
}
update_rss_feed(rssFeed)
ret = body
}
//TODO: If the cache option is disabled, then always fetch the latest entries from the website
L.Push(lua.LString(ret))
return 1
}
func mergeRssItems(L *lua.LState) int {
table1 := L.CheckTable(1)
table2 := L.CheckTable(2)
if table1.Len() == 0 {
L.Push(table2)
return 1
} else if table2.Len() == 0 {
L.Push(table1)
return 1
}
table2.ForEach(func(_ lua.LValue, value lua.LValue) {
table1.Append(value)
})
L.Push(table1)
return 1
}
func limitRssItems(L *lua.LState) int {
table := L.CheckTable(1)
limit := L.CheckInt(2)
for i := table.Len(); i > limit; i-- {
table.Remove(i)
}
L.Push(table)
return 1
}
func generateRssFeed(L *lua.LState) int {
// Creating a new rss feed from scratch
title := L.CheckString(1)
entries := L.CheckTable(2) // For right now this will only be a string array of the description
feed := RssRoot{}
feed.Channel = RssChannel{
Title: title,
Link: "http://example.com",
Description: "This is an example rss feed",
Image: RssImage{
Url: "http://example.com/image.jpg",
Title: "Example Image",
Link: "http://example.com",
},
}
// Append the items to the feed
// Notably the <channel> tag as <item>s
items := []RssItem{}
for i := 1; i <= entries.Len(); i++ {
entry := entries.RawGetInt(i)
item := RssItem{
Title: "Novemeber 2023",
Link: "http://example.com",
Description: entry.String(),
Category: "Reverse Engineering",
Guid: "http://example.com",
PubDate: time.Now().UTC().Format(time.RFC3339),
}
items = append(items, item)
}
feed.Channel.Items = items
output, err := xml.MarshalIndent(feed, "", " ")
if err != nil {
logger.Fatal(err)
return 0
}
L.Push(lua.LString(string(output)))
return 1
}

17
rss_sorter.go Normal file
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package main
import "time"
type ByPubDate []RssItem
func (a ByPubDate) Len() int { return len(a) }
func (a ByPubDate) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a ByPubDate) Less(i, j int) bool { return parsePubDate(a[i].PubDate).After(parsePubDate(a[j].PubDate)) }
func parsePubDate(pubDateStr string) time.Time {
// Add the appropriate time parsing logic based on your date format
// For example, if your date format is "Mon, 02 Jan 2006 15:04:05 -0700",
// you can use the following parsing code
parsedTime, _ := time.Parse("Mon, 02 Jan 2006 15:04:05 -0700", pubDateStr)
return parsedTime
}

26
run.bash
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@ -1,26 +0,0 @@
#!/usr/bin/env bash
# Set the PORT, NO_SCHEDULER and CRON_SCHEDULE environment variables if not set
# RUST_LOG: The log level for the server
# PORT: The port to run the server on
# NO_SCHEDULER: If set to true, the scheduler will not run
# CRON_SCHEDULE: The cron schedule to run the scheduler on
RUST_LOG=${RUST_LOG:-'info'}
PORT=${PORT:-8080}
REDIS_HOST=${REDIS_HOST:-'redis'}
REDIS_PORT=${REDIS_PORT:-6379}
NO_SCHEDULER=${NO_SCHEDULER:-false}
CRON_SCHEDULE=${CRON_SCHEDULE:-'* 1 * * * *'}
NO_ARG_VALUE_ARGS=""
if [ "$NO_SCHEDULER" = "true" ]; then
NO_ARG_VALUE_ARGS+=(" --no-scheduler")
fi
set -x
export RUST_LOG=$RUST_LOG
exec /app/rsslair --port $PORT --cron "$CRON_SCHEDULE" $NO_ARG_VALUE_ARGS

59
scripts/.definitions.lua
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@ -1,59 +0,0 @@
-- definitions.lua
--- @diagnostic disable: unused-local
--- @diagnostic disable: missing-return
--- @diagnostic disable: lowercase-global
router = {}
--- @param name string
--- @param path string
function router.add_route(name, path) end
--- @param url string
--- @return string
function get(url) end
--- @class log
--- @field info fun(msg: string)
--- @field error fun(msg: string)
--- @field warn fun(msg: string)
--- @field debug fun(msg: string)
log = {}
--- @class HtmlParser
--- @field parse fun(html: string)
HtmlParser = {}
--- @class Feed
--- @field new fun(xml: string): Feed
--- @field render fun(): string
--- @field channel Channel
Feed = {}
--- @class Channel
--- @field title string
--- @field atom_link AtomLink
--- @field articles Article[]
Channel = {}
--- @class Article
--- @field title string
--- @field link string
--- @field creator string
--- @field pub_date string
--- @field categories string[]
--- @field guid Guid
--- @field description string
Article = {}
--- @class AtomLink
--- @field href string
--- @field rel string
--- @field type string
AtomLink = {}
--- @class Guid
--- @field is_perma_link boolean
--- @field guid string
Guid = {}

28
scripts/.example.lua
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@ -1,28 +0,0 @@
local WEBSITE_NAME = "TechCrunch"
local WEBSITE_HOME = "https://techcrunch.com"
add_route("techCrunch", "/TechCrunch")
techCrunch = {}
function techCrunch.route(args)
local xml = get("http://localhost:8081/feed.xml") -- Get an xml RSS feed
local rss_parser = Feed() -- Create a new instance of the Feed object
local feed = rss_parser:new(xml) -- Parse the xml into a feed object
sleep(1000)
local articles = feed.channel.articles -- Get all of the article objects
local article = articles[1] -- Get the first article object
log:info("Title: " .. article.title)
log:info("Description: " .. article.description)
local article_content = get(article.link) -- Get the entire article content
local html_parser = HtmlParser() -- Create a new instance of the html parser
html_parser:parse(article_content) -- Parse the article into an html tree
local elements = html_parser:select_element('.wp-block-post-content') -- Select the element with the class 'wp-block-post-content'
local element = elements[1] -- String of the html from the element selected
article.description = element -- Replace the description with the entire article
return feed:render(), feed
end

45
scripts/9to5google.lua Normal file
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@ -0,0 +1,45 @@
add_route("Nineto5google", "/9to5google")
function Nineto5google.route(args)
-- TODO: This should not be handled by lua
-- Golang needs to bind the database to lua
local rssFeed = rss:get("https://9to5google.com/feed/")
local entries = parse_xml_feed(rssFeed)
local newEntries = {}
local to_scrape = {}
-- TODO: Potentially remove this limit
for i = 1, 25 do
table.insert(to_scrape, entries[i])
end
-- Check if the selected entries have already been scraped
scraped, to_scrape = db:check(to_scrape)
for _, entry in ipairs(to_scrape) do
log.debug("Scraping: " .. entry:link())
local article = get(entry:link())
local post = html.new(article)
post:remove("header")
post:remove("script")
post:remove(".ad-disclaimer-container")
post:remove("#after_disclaimer_placement")
post:remove(".adsbygoogle")
post:remove(".google-news-link")
local content = post:select(".post-content")
entry:description(content)
db:insert(entry)
table.insert(newEntries, entry)
os.execute("sleep 0.25")
end
-- Fetch the scraped entries from the database
local localEntries = db:getRss(scraped)
-- Merge the two lists
newEntries = rss:merge(localEntries, newEntries)
-- Create a new rss feed from the merged list
local image = RssImage.new("9to5google", "https://9to5google.com/favicon.ico", "https://9to5google.com")
local feed = create_rss_feed("9to5google", "https://9to5google.com", image, newEntries)
return feed
end

72
scripts/9to5mac.lua
View File

@ -2,45 +2,43 @@ local WEBSITE_NAME = "9to5mac"
local WEBSITE_HOME = "https://9to5mac.com"
add_route("Nineto5mac", "/9to5mac")
Nineto5mac = {}
function Nineto5mac.route(args)
local xml = get("https://9to5mac.com/feed/")
local rss_parser = Feed()
local feed = rss_parser:new(xml)
local rssFeed = rss:get("https://9to5mac.com/feed/")
local entries = parse_xml_feed(rssFeed)
local articles = feed.channel.articles
local existing_articles = db:check_if_articles_in_feed_exist(feed)
local newEntries = {}
local to_scrape = {}
local scraped = {}
log:debug("Fetching missing articles from the database")
for _, article in ipairs(articles) do
if existing_articles[article.guid.value] then
log:debug("Article already exists in the database: " .. article.title)
article.description = existing_articles[article.guid.value]
goto continue
-- NOTE: 25 limit for right now
to_scrape = rss.limit(entries, 25)
-- Check if the selected entries have already been scraped
scraped, to_scrape = db:check(to_scrape)
for _, entry in ipairs(to_scrape) do
log.debug("Scraping: " .. entry:link())
local article = get(entry:link())
local post = html.new(article)
post:remove("header")
post:remove("script")
post:remove(".ad-disclaimer-container")
post:remove("#after_disclaimer_placement")
post:remove(".adsbygoogle")
post:remove(".google-news-link")
local content = post:select(".post-content")
entry:description(content)
db:insert(entry)
table.insert(newEntries, entry)
os.execute("sleep 0.25")
end
log:debug("Getting article: " .. article.title .. " from " .. article.link)
local article_content = get(article.link)
local html_parser = HtmlParser()
html_parser:parse(article_content)
-- Remove sections
html_parser:delete_element("header")
html_parser:delete_element("script")
html_parser:delete_element(".ad-disclaimer-container")
html_parser:delete_element("#after_disclaimer_placement")
html_parser:delete_element(".adsbygoogle")
html_parser:delete_element(".google-news-link")
local elements = html_parser:select_element('.post-content')
local element = elements
[1]
article.description =
element
sleep(500)
::continue::
end
return feed:render(), feed
-- Fetch the scraped entries from the database
local localEntries = db:getRss(scraped)
-- Merge the two lists
newEntries = rss.merge(localEntries, newEntries)
-- Create a new rss feed from the merged list
local image = RssImage.new(WEBSITE_NAME, "https://9to5mac.com/favicon.ico", WEBSITE_HOME)
local feed = create_rss_feed(WEBSITE_NAME, WEBSITE_HOME, image, newEntries)
return feed
end

45
scripts/electrek.lua Normal file
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@ -0,0 +1,45 @@
add_route("electrek", "/electrek")
function electrek.route(args)
-- TODO: This should not be handled by lua
-- Golang needs to bind the database to lua
local rssFeed = rss:get("https://electrek.co/feed")
local entries = parse_xml_feed(rssFeed)
local newEntries = {}
local to_scrape = {}
-- TODO: Potentially remove this limit
for i = 1, 25 do
table.insert(to_scrape, entries[i])
end
-- Check if the selected entries have already been scraped
scraped, to_scrape = db:check(to_scrape)
for _, entry in ipairs(to_scrape) do
log.debug("Scraping: " .. entry:link())
local article = get(entry:link())
local post = html.new(article)
post:remove("header")
post:remove("script")
post:remove(".ad-disclaimer-container")
post:remove("#after_disclaimer_placement")
post:remove(".adsbygoogle")
post:remove(".google-news-link")
local content = post:select(".post-content")
entry:description(content)
db:insert(entry)
table.insert(newEntries, entry)
os.execute("sleep 0.25")
end
-- Fetch the scraped entries from the database
local localEntries = db:getRss(scraped)
-- Merge the two lists
newEntries = rss:merge(localEntries, newEntries)
-- Create a new rss feed from the merged list
local image = RssImage.new("Electrek", "https://electrek.co/favicon.ico", "https://electrek.co")
local feed = create_rss_feed("Electrek", "https://electrek.co", image, newEntries)
return feed
end

47
scripts/eurogamer.lua Normal file
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@ -0,0 +1,47 @@
-- TODO: Add the other routes here
add_route("eurogamer", "/eurogamer")
function eurogamer.route(args)
-- TODO: This should not be handled by lua
-- Golang needs to bind the database to lua
local rssFeed = rss:get("https://www.eurogamer.net/feed/news")
local entries = parse_xml_feed(rssFeed)
local newEntries = {}
local scraped = {}
local to_scrape = rss.limit(entries, 25)
-- Check if the selected entries have already been scraped
scraped, to_scrape = db:check(entries)
for _, entry in ipairs(to_scrape) do
log.debug("Scraping: " .. entry:link())
local article = get(entry:link())
local post = html.new(article)
post:remove("header")
post:remove("script")
post:remove(".poll_wrapper")
post:remove(".poll_container")
post:remove(".poll")
post:remove(".poll_leaderboard")
post:remove(".advert_container")
post:remove(".article_footer")
post:remove(".adsbygoogle")
post:remove(".google-news-link")
local content = post:select(".article_body")
entry:description(content)
db:insert(entry)
table.insert(newEntries, entry)
os.execute("sleep 0.25")
end
-- Fetch the scraped entries from the database
local localEntries = db:getRss(scraped)
-- Merge the two lists
newEntries = rss.merge(newEntries, localEntries)
-- Create a new rss feed from the merged list
local image = RssImage.new("Eurogamer News", "https://eurogamer.net/favicon.ico", "https://eurogamer.net")
local feed = create_rss_feed("Eurogamer News", "https://eurogamer.net", image, newEntries)
return feed
end

62
scripts/godot.lua
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@ -1,39 +1,37 @@
local WEBSITE_NAME = "Godot"
local WEBSITE_HOME = "https://godotengine.org"
add_route('godot', '/godot')
godot = {}
-- Live Website
-- THIS WORKS!!!
function godot.route(args)
local xml = get("https://godotengine.org/rss.xml")
local rss_parser = Feed()
local feed = rss_parser:new(xml)
-- Get the RSS Feed
local rssFeed = rss:get("https://godotengine.org/rss.xml")
local entries = parse_xml_feed(rssFeed)
local newEntries = {}
local scraped, to_scrape = db:check(entries)
local articles = feed.channel.articles
local existing_articles = db:check_if_articles_in_feed_exist(feed)
log:debug("Fetching missing articles from the database")
for _, article in ipairs(articles) do
if existing_articles[article.guid.value] then
log:debug("Article already exists in the database: " .. article.title)
article.description = existing_articles[article.guid.value]
goto continue
-- Accuumulate the entries
for _, entry in ipairs(to_scrape) do
log.debug("Scraping: " .. entry:link())
-- Get the article
local article = get(entry:link())
local article_html = html.new(article)
-- Get the article body
local content = article_html:select("div.article-body")
-- Update the entry
entry:description(content)
-- Add the entry to the list
db:insert(entry)
table.insert(newEntries, entry)
os.execute("sleep 0.25")
end
log:debug("Getting article: " .. article.title .. " from " .. article.link)
-- Get the already scraped entries from the database
local localEntries = db:getRss(scraped)
-- TODO: Handle case where there are no local entries
local newFeed = rss.merge(localEntries, newEntries)
local article_content = get(article.link)
local html_parser = HtmlParser()
html_parser:parse(article_content)
local elements = html_parser:select_element('.article-body')
local element = elements
[1]
article.description =
element
sleep(500)
::continue::
-- Create a new rss feed
local image = RssImage.new("Godot Engine Official", "https://godotengine.org/favicon.ico", "https://godotengine.org")
local feed = create_rss_feed("Godot Engine Official", "https://godotengine.org", image, newFeed)
return feed
end
return feed:render(), feed
end

42
scripts/phoronix.lua
View File

@ -1,42 +0,0 @@
-- TODO: Once the feed is sufficently long, we could make a bigger feed since the feed is only 20 articles long
local WEBSITE_NAME = "Phronix"
local WEBSITE_HOME = "https://phoronix.com"
add_route("phoronix", "/phoronix")
phoronix = {}
function phoronix.route(args)
local xml = get("https://www.phoronix.com/rss.php") -- Get the xml from the website
local rss_parser = Feed() -- Create a new instance of the Feed object
local feed = rss_parser:new(xml) -- Parse the xml into a feed object
local articles = feed.channel.articles -- Get all of the article objects
-- TODO: Add api to check if the articles are already in the database
local existing_articles = db:check_if_articles_in_feed_exist(feed) -- Get the missing articles from the database
log:debug("Fetching missing articles from the database")
for _, article in ipairs(articles) do
if existing_articles[article.guid.value] then
log:debug("Article already exists in the database: " .. article.title)
article.description = existing_articles[article.guid.value]
goto continue
end
log:debug("Getting article: " .. article.title .. " from " .. article.link)
local article_content = get(article.link) -- Get the entire article content
local html_parser = HtmlParser() -- Create a new instance of the html parser
html_parser:parse(article_content) -- Parse the article into an html tree
local elements = html_parser:select_element('.content') -- Select the element with the class 'wp-block-post-content'
local element = elements
[1] -- String of the html from the element selected
article.description =
element -- Replace the description with the entire article
sleep(500)
::continue::
end
return feed:render(), feed
end

42
scripts/techcrunch.lua
View File

@ -1,42 +0,0 @@
-- TODO: Once the feed is sufficently long, we could make a bigger feed since the feed is only 20 articles long
local WEBSITE_NAME = "TechCrunch"
local WEBSITE_HOME = "https://techcrunch.com"
add_route("techCrunch", "/TechCrunch")
techCrunch = {}
function techCrunch.route(args)
local xml = get("https://techcrunch.com/feed/") -- Get the xml from the website
local rss_parser = Feed() -- Create a new instance of the Feed object
local feed = rss_parser:new(xml) -- Parse the xml into a feed object
local articles = feed.channel.articles -- Get all of the article objects
-- TODO: Add api to check if the articles are already in the database
local existing_articles = db:check_if_articles_in_feed_exist(feed) -- Get the missing articles from the database
log:debug("Fetching missing articles from the database")
for _, article in ipairs(articles) do
if existing_articles[article.guid.value] then
log:debug("Article already exists in the database: " .. article.title)
article.description = existing_articles[article.guid.value]
goto continue
end
log:debug("Getting article: " .. article.title .. " from " .. article.link)
local article_content = get(article.link) -- Get the entire article content
local html_parser = HtmlParser() -- Create a new instance of the html parser
html_parser:parse(article_content) -- Parse the article into an html tree
local elements = html_parser:select_element('.wp-block-post-content') -- Select the element with the class 'wp-block-post-content'
local element = elements
[1] -- String of the html from the element selected
article.description =
element -- Replace the description with the entire article
sleep(500)
::continue::
end
return feed:render(), feed
end

12
scripts/utils/lua_bindings.lua Normal file
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@ -0,0 +1,12 @@
-- @meta
---@diagnostic disable: unused-local
---@diagnostic disable: lowercase-global
-- @param name string
-- @param path string
-- return void
function add_route(name, path) end
-- @param url string
-- @return string
function get(url) end

39
server.go Normal file
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@ -0,0 +1,39 @@
package main
import (
"net/http"
lua "github.com/yuin/gopher-lua"
)
func start_server(address string, port string, L *lua.LState) *http.Server {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
logger.Debug("Request received: ", path)
if _, ok := routes[path]; !ok {
w.WriteHeader(http.StatusNotFound)
return
}
response := responses[path]
logger.Trace("API Response: ", response)
w.Write([]byte(response))
})
listening := address + ":" + port
server := &http.Server{
Addr: listening,
Handler: nil,
}
go func() {
// TODO: Add an error message for this
if err := server.ListenAndServe(); err != http.ErrServerClosed {
logger.Fatalf("Server Error: %v", err)
}
}()
logger.Info("Listening on ", listening)
return server
}

280
src/database.rs
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@ -1,280 +0,0 @@
use crate::rss_parser::{Item as Article, Rss};
use log::{debug, error, trace};
use mlua::{FromLua, Lua, Table, UserData, UserDataMethods, Value};
use once_cell::sync::Lazy;
use rusqlite::{params, Connection};
use std::sync::Mutex;
static SQLITE_DB: Lazy<Mutex<Connection>> =
Lazy::new(|| Mutex::new(Connection::open("database.db").unwrap()));
#[derive(Debug, Clone)]
pub struct Database {
conn: &'static Mutex<Connection>,
}
impl Default for Database {
fn default() -> Self {
Self::new()
}
}
impl Database {
pub fn new() -> Database {
//TODO: Handle all of these unwrap calls
let conn = SQLITE_DB.lock().unwrap();
conn.execute(
"CREATE TABLE IF NOT EXISTS feeds (
id INTEGER PRIMARY KEY,
url TEXT NOT NULL,
title TEXT NOT NULL,
last_updated TEXT NOT NULL
)",
params![],
)
.unwrap();
conn.execute(
"CREATE TABLE IF NOT EXISTS images (
url TEXT PRIMARY KEY,
title TEXT NOT NULL,
link TEXT NOT NULL,
width INTEGER NOT NULL,
height INTEGER NOT NULL
)",
params![],
)
.unwrap();
conn.execute(
"CREATE TABLE IF NOT EXISTS articles (
id INTEGER PRIMARY KEY,
guid TEXT UNIQUE NOT NULL,
creator TEXT,
categories TEXT,
feed_id INTEGER NOT NULL,
title TEXT NOT NULL,
link TEXT NOT NULL,
pub_date TEXT NOT NULL,
description TEXT NOT NULL
)",
params![],
)
.unwrap();
Self { conn: &*SQLITE_DB }
}
pub fn new_with_conn(conn: Connection) -> Database {
conn.execute(
"CREATE TABLE IF NOT EXISTS feeds (
id INTEGER PRIMARY KEY,
url TEXT NOT NULL,
title TEXT NOT NULL,
last_updated TEXT NOT NULL
)",
params![],
)
.unwrap();
conn.execute(
"CREATE TABLE IF NOT EXISTS images (
url TEXT PRIMARY KEY,
title TEXT NOT NULL,
link TEXT NOT NULL,
width INTEGER NOT NULL,
height INTEGER NOT NULL
)",
params![],
)
.unwrap();
conn.execute(
"CREATE TABLE IF NOT EXISTS articles (
id INTEGER PRIMARY KEY,
guid TEXT UNIQUE NOT NULL,
creator TEXT,
categories TEXT,
feed_id INTEGER NOT NULL,
title TEXT NOT NULL,
link TEXT NOT NULL,
pub_date TEXT NOT NULL,
description TEXT NOT NULL
)",
params![],
)
.unwrap();
Self { conn: &*SQLITE_DB }
}
pub fn insert_feed(
&self,
url: &str,
title: &str,
last_updated: &str,
) -> Result<usize, Box<dyn std::error::Error>> {
let conn = self.conn.lock().unwrap();
Ok(conn.execute(
"INSERT INTO feeds (url, title, last_updated) VALUES (?1, ?2, ?3)",
params![url, title, last_updated],
)?)
}
/// Insert an article into the database
///
/// # Arguments
///
/// * `article` - The article to insert
///
/// # Returns
///
/// * The number of rows inserted
pub fn insert_article(&self, article: &Article) -> Result<usize, Box<dyn std::error::Error>> {
let title = article.title.as_ref().unwrap();
let guid = article.guid.as_ref().unwrap().value.clone();
let conn = self.conn.lock().unwrap();
let ret = conn.execute(
"INSERT INTO articles (guid, creator, categories, feed_id, title, link, pub_date, description) VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8)",
params![
guid,
article.creator,
article.categories.join(","),
1,
title,
article.link,
article.pub_date,
article.description,
],
);
match ret {
Ok(_) => Ok(ret?),
Err(_) => {
// TODO: Do we care about entries that already exist?
//error!("Error inserting {} into database: {}", title, e);
//Err(e.into())
Ok(0)
}
}
}
pub fn get_article_by_guid(&self, guid: &str) -> mlua::Result<Option<Article>> {
//TODO: Make this look better
let conn = self.conn.lock().unwrap();
let mut stmt = match conn.prepare("SELECT * FROM articles WHERE guid = ?1") {
Ok(it) => it,
Err(err) => {
let var_name = Err(err);
return var_name.unwrap();
}
};
let mut rows = match stmt.query(params![guid]) {
Ok(it) => it,
Err(err) => {
let var_name = Err(err);
return var_name.unwrap();
}
};
let row = match rows.next() {
Ok(it) => it,
Err(err) => {
let var_name = Err(err);
return var_name.unwrap();
}
};
let row = match row {
Some(it) => it,
None => return Ok(None),
};
trace!("Row: {:?}", row);
let article = Article {
title: Some(row.get(5).unwrap_or("".to_string())),
guid: Some(crate::rss_parser::Guid {
value: Some(row.get(1).unwrap_or("".to_string())),
is_perma_link: Some(false),
}),
creator: Some(row.get(2).unwrap_or("".to_string())),
categories: row
.get(3)
.unwrap_or("".to_string())
.split(",")
.map(|s| s.to_string())
.collect(),
link: Some(row.get(6).unwrap_or("".to_string())),
pub_date: Some(row.get(7).unwrap_or("".to_string())),
description: Some(row.get(8).unwrap_or("".to_string())),
};
debug!("Article: {:?}", article);
Ok(Some(article))
}
//pub fn does_article_exist(&self, guid: &str) -> mlua::Result<bool> {
// let mut stmt = self.conn.prepare("SELECT * FROM articles WHERE guid = ?1")?;
// let mut rows = stmt.query(params![guid])?;
// let row = rows.next()?;
// match row {
// Some(_) => Ok(true),
// None => Ok(false),
// }
//}
}
impl FromLua<'_> for Database {
fn from_lua(value: Value, _: &'_ Lua) -> mlua::Result<Self> {
match value {
Value::UserData(ud) => {
let db = ud.borrow::<Database>()?;
Ok(db.clone())
}
_ => Err(mlua::Error::FromLuaConversionError {
from: value.type_name(),
to: "Database",
message: Some("expected Database".to_string()),
}),
}
}
}
impl UserData for Database {
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method(
"get_article_by_guid",
|_, this, guid: String| -> Result<Article, mlua::Error> {
match this.get_article_by_guid(&guid) {
Ok(Some(article)) => Ok(article),
Ok(None) => Err(mlua::Error::RuntimeError("Article not found".to_string())),
Err(e) => Err(mlua::Error::RuntimeError(e.to_string())),
}
},
);
methods.add_method(
"check_if_articles_in_feed_exist",
|lua, this, feed: Rss| -> Result<Table, mlua::Error> {
// Check to if all of the articles in the feed exist
let table = lua.create_table()?;
let articles = &feed.channel.borrow().items;
for article in articles {
let article = article.borrow();
let guid = &article.guid.as_ref().unwrap().value;
let guid = guid.clone().unwrap();
match this.get_article_by_guid(&guid) {
Ok(Some(article)) => {
table.set(guid, article.description.clone().unwrap())?;
}
Ok(None) => {
continue;
}
Err(e) => {
error!("Error checking if article exists: {}", e);
}
}
}
Ok(table)
},
);
//methods.add_method("does_article_exist", |_, this, guid: String| -> Result<Result<bool, _>, mlua::Error> {
// Ok(this.does_article_exist(&guid))
//});
}
}

89
src/html_parser.rs
View File

@ -1,89 +0,0 @@
use log::{debug, error};
use mlua::{UserData, UserDataMethods};
use scraper::{Html, Selector};
pub struct HtmlParser {
doc: Html,
}
impl Default for HtmlParser {
fn default() -> Self {
Self::new()
}
}
impl HtmlParser {
pub fn new() -> Self {
Self {
doc: Html::parse_document(""),
}
}
pub fn parse(&mut self, html: &str) {
self.doc = Html::parse_document(html);
}
pub fn select_element(&self, selector: &str) -> Vec<String> {
let selector = Selector::parse(selector);
match selector {
Ok(selector) => {
let elements: Vec<_> = self.doc.select(&selector).collect();
debug!("Found {} elements", elements.len());
elements.iter().map(|x| x.html()).collect()
}
Err(e) => {
error!("{}", e);
vec![]
}
}
}
pub fn delete_element(&mut self, selector: &str) {
let selector = Selector::parse(selector);
match selector {
Ok(selector) => {
let node_ids: Vec<_> = self.doc.select(&selector).map(|x| x.id()).collect();
for id in node_ids {
debug!("Deleting node with id: {:?}", id);
self.doc.tree.get_mut(id).unwrap().detach();
}
}
Err(e) => {
println!("Error: {}", e);
}
}
}
pub fn get_html(&self) -> String {
self.doc.root_element().html()
}
}
impl UserData for HtmlParser {
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method_mut(
"parse",
|_, this, html: String| -> Result<(), mlua::Error> {
this.parse(&html);
Ok(())
},
);
methods.add_method(
"select_element",
|_, this, selector: String| -> Result<Vec<String>, mlua::Error> {
Ok(this.select_element(&selector))
},
);
methods.add_method_mut(
"delete_element",
|_, this, selector: String| -> Result<(), mlua::Error> {
this.delete_element(&selector);
Ok(())
},
);
methods.add_method("render", |_, this, _: ()| -> Result<String, mlua::Error> {
Ok(this.get_html())
});
}
}

91
src/main.rs
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@ -1,91 +0,0 @@
use log::{debug, info};
use std::collections::HashMap;
use std::sync::{Arc, Mutex, RwLock};
use std::thread;
use once_cell::sync::Lazy;
use clap::Parser;
pub mod html_parser;
pub mod router;
pub mod rss_parser;
pub mod scheduler;
pub mod scripting;
pub mod database;
#[derive(Parser)]
#[command(version, about, long_about = None)]
struct Cli {
#[arg(short, long, default_value = "8000")]
port: u16,
#[arg(long, default_value = "127.0.0.1")]
redis_url: String,
#[arg(short, long, default_value = "6379")]
redis_port: u16,
#[arg(short, long)]
no_scheduler: bool,
#[arg(short, long, default_value = "1m")]
cron: String,
}
static REDIS: Lazy<Mutex<redis::Connection>> = Lazy::new(|| {
let client = redis::Client::open("redis://127.0.0.1").unwrap();
let conn = client.get_connection().unwrap();
Mutex::new(conn)
});
#[tokio::main]
async fn main() {
let cli = Cli::parse();
let port = cli.port;
let cron = cli.cron;
let no_scheduler = cli.no_scheduler;
env_logger::init();
let routes = Arc::new(RwLock::new(HashMap::new()));
let routes_ref = routes.clone();
// Create variable for when the routes are ready
let is_ready = Arc::new(Mutex::new(false));
let is_ready_ref = is_ready.clone();
thread::spawn(move || {
let engine = scripting::ScriptingEngine::new();
engine.load_globals().unwrap();
engine.load_all_scripts().unwrap();
let registered_routes = engine.get_routes().unwrap();
routes_ref.write().unwrap().extend(registered_routes);
std::mem::drop(routes_ref
.write()
.unwrap());
let mut r = is_ready_ref.lock().unwrap();
*r = true;
std::mem::drop(r); // Unlock the mutex
if no_scheduler {
return;
}
let mut scheduler = scheduler::Scheduler::new(engine).unwrap(); //TODO: Handle error
//scheduler.schedule("* 1 * * * *").unwrap();
scheduler.schedule(&cron).unwrap();
});
let is_ready = is_ready.clone();
while !*is_ready.lock().unwrap() {
thread::sleep(std::time::Duration::from_secs(1));
}
debug!("Routes are ready");
let routes = routes.read().unwrap().clone();
let router = router::Router::new(routes.clone(), port);
info!("Successfully created router and scripting engine");
router.serve().await;
}

93
src/router.rs
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@ -1,93 +0,0 @@
use core::fmt;
use std::collections::HashMap;
use anyhow::Result;
use log::debug;
use redis::{Commands, RedisResult};
use warp::http::StatusCode;
use warp::Filter;
use crate::REDIS;
pub struct Router {
//TODO: Redis to cache the route response
routes: HashMap<String, String>,
port: u16,
}
impl fmt::Debug for Router {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Router")
}
}
impl Router {
pub fn new(routes: HashMap<String, String>, port: u16) -> Router {
debug!("Creating new router with routes: {:?}", routes);
Router { routes, port }
}
pub fn get_routes(&self) -> HashMap<String, String> {
self.routes.clone()
}
pub async fn serve(&self) {
async fn dyn_reply(
word: String,
routes: &HashMap<String, String>,
) -> Result<Box<dyn warp::Reply>, warp::Rejection> {
debug!("Received word: {}", word);
debug!("Routes: {:?}", routes);
let response: RedisResult<String> = REDIS.lock().unwrap().get(word.clone());
match response {
Ok(response) => {
debug!("Response from Redis: {}", response);
let resp = warp::http::Response::builder()
.header("Content-Type", "text/xml")
.status(StatusCode::OK)
.body(response.clone())
.unwrap();
Ok(Box::new(warp::reply::with_status(resp, StatusCode::OK)))
}
Err(_) => {
debug!("Response not found in Redis, checking routes");
debug!("Route not found");
Ok(Box::new(warp::reply::with_status(
"Route not found".to_string(),
StatusCode::NOT_FOUND,
)))
}
}
}
let r = self.routes.clone();
let r2 = self.routes.clone();
let index = warp::path::end().map(move || {
let mut html_str = "".to_string();
// Create table for the routes with borders
html_str.push_str("<style>table {border-collapse: collapse;} table, th, td {border: 1px solid black;}</style>");
html_str.push_str("<table>");
html_str.push_str("<tr><th>Service</th><th>Endpoint</th></tr>");
for (route, response) in r.iter() {
html_str.push_str("<tr>");
html_str.push_str(&format!("<td>{}</td>", route));
html_str.push_str(&format!("<td>{}</td>", response));
html_str.push_str("</tr>");
}
html_str.push_str("</table>");
warp::reply::html(html_str)
});
let routes = warp::path::param().and_then({
move |word: String| {
let s = r2.clone();
async move { dyn_reply(word, &s).await }
}
})
.or(index);
warp::serve(routes).run(([0, 0, 0, 0], self.port)).await;
}
}

330
src/rss_parser.rs
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@ -1,330 +0,0 @@
use std::{cell::RefCell, rc::Rc};
use log::error;
use mlua::{FromLua, Lua, Result, UserData, UserDataFields, UserDataMethods, Value};
use quick_xml::de::from_str;
use serde::{Deserialize, Serialize};
// TODO: Define macro to cleanup #[derive] boilerplate
// NOTE: Macros for lua userdata fields and methods
macro_rules! add_field_method_get {
($fields:ident, $name:literal, $field:ident) => {
$fields.add_field_method_get($name, |_, this| Ok(this.$field.clone()));
};
}
macro_rules! add_field_method_get_mut {
($fields:ident, $name:literal, $field:ident) => {
$fields.add_field_method_get($name, |_, this| Ok(this.$field));
};
}
macro_rules! add_field_method_set {
($fields:ident, $name:literal, $field:ident, $type:ty) => {
$fields.add_field_method_set($name, |_, this, value: $type| {
this.$field = value;
Ok(())
});
};
}
macro_rules! add_field_method_get_set {
($fields:ident, $name:literal, $field:ident, $type:ty) => {
add_field_method_get!($fields, $name, $field);
add_field_method_set!($fields, $name, $field, $type);
};
}
macro_rules! add_field_method_get_rc {
($fields:ident, $name:literal, $field:ident) => {
$fields.add_field_method_get($name, |_, this| Ok(this.$field.clone()));
};
}
macro_rules! add_field_method_set_rc {
($fields:ident, $name:literal, $field:ident, $type:ty) => {
$fields.add_field_method_set($name, |_, this, value: $type| {
this.$field = Rc::new(RefCell::new(value));
Ok(())
});
};
}
macro_rules! add_field_method_get_set_rc {
($fields:ident, $name:literal, $field:ident, $type:ty) => {
add_field_method_get_rc!($fields, $name, $field);
add_field_method_set_rc!($fields, $name, $field, $type);
};
}
macro_rules! add_field_method_set_rc_option {
($fields:ident, $name:literal, $field:ident, $type:ty) => {
$fields.add_field_method_set($name, |_, this, value: Option<$type>| {
this.$field = value.map(|v| Rc::new(RefCell::new(v)));
Ok(())
});
};
}
#[macro_export]
macro_rules! implement_from_lua {
($type:ty) => {
impl FromLua<'_> for $type {
fn from_lua(value: Value, _: &Lua) -> Result<Self> {
match value {
Value::UserData(ud) => Ok(ud.borrow::<Self>()?.clone()),
_ => unreachable!(),
}
}
}
};
}
/// Lua object representing an RSS feed as Feed
#[derive(Default, Debug, Deserialize, Serialize, Clone)]
#[serde(rename = "rss")]
pub struct Rss {
#[serde(rename = "channel")]
pub channel: Rc<RefCell<Channel>>,
// Attributes
// Example: <rss version="0"/>
#[serde(rename = "@version")]
pub version: Option<String>,
#[serde(rename = "@xmlns:content")]
pub xmlns_content: Option<String>,
#[serde(rename = "@xmlns:wfw")]
pub xmlns_wfw: Option<String>,
#[serde(rename = "@xmlns:dc")]
pub xmlns_dc: Option<String>,
#[serde(rename = "@xmlns:atom")]
pub xmlns_atom: Option<String>,
#[serde(rename = "@xmlns:sy")]
pub xmlns_sy: Option<String>,
#[serde(rename = "@xmlns:slash")]
pub xmlns_slash: Option<String>,
#[serde(rename = "@xmlns:georss")]
pub xmlns_georss: Option<String>,
#[serde(rename = "@xmlns:geo")]
pub xmlns_geo: Option<String>,
}
impl Rss {
fn new(xml: &str) -> Rss {
let xml = xml.replace("<atom:link", "<atom_link");
from_str(&xml).unwrap()
}
fn render(&self) -> String {
quick_xml::se::to_string(self)
.unwrap()
.replace("<atom_link>", "<atom:link>")
.replace("</atom_link>", "</atom:link>")
}
}
impl FromLua<'_> for Rss {
fn from_lua(value: Value, _: &Lua) -> Result<Self> {
match value {
Value::UserData(ud) => Ok(ud.borrow::<Self>()?.clone()),
_ => {
error!("Expected (string, Feed) tuple, received: {:?}", value);
error!("Maybe the route function is not returning both");
Err(mlua::Error::RuntimeError(
"Expected (string, Feed) tuple".to_string(),
))
}
}
}
}
impl UserData for Rss {
fn add_fields<'lua, F: UserDataFields<'lua, Self>>(fields: &mut F) {
add_field_method_get_set_rc!(fields, "channel", channel, Channel);
}
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method("new", |_, _, xml: String| Ok(Rss::new(&xml)));
methods.add_method("render", |_, this, ()| Ok(this.render()));
}
}
#[derive(Default, Debug, Deserialize, Serialize, Clone)]
pub struct Channel {
pub title: Option<String>,
#[serde(rename = "atom_link")]
pub atom_link: Option<Rc<RefCell<AtomLink>>>,
#[serde(rename = "link")]
pub link: Option<String>,
pub description: Option<String>,
#[serde(rename = "lastBuildDate")]
pub last_build_date: Option<String>,
pub language: Option<String>,
#[serde(rename = "sy:updatePeriod")]
pub update_period: Option<String>,
#[serde(rename = "sy:updateFrequency")]
pub update_frequency: Option<String>,
pub generator: Option<String>,
pub image: Option<Rc<RefCell<Image>>>,
#[serde(rename = "item", default)]
pub items: Vec<Rc<RefCell<Item>>>,
}
implement_from_lua!(Channel);
impl UserData for Channel {
fn add_fields<'lua, F: UserDataFields<'lua, Self>>(fields: &mut F) {
add_field_method_get_set!(fields, "title", title, Option<String>);
add_field_method_get_rc!(fields, "atom_link", atom_link);
add_field_method_set_rc_option!(fields, "atom_link", atom_link, AtomLink);
add_field_method_get_set!(fields, "link", link, Option<String>);
add_field_method_get_set!(fields, "description", description, Option<String>);
add_field_method_get_set!(fields, "last_build_date", last_build_date, Option<String>);
add_field_method_get_set!(fields, "language", language, Option<String>);
add_field_method_get_set!(fields, "update_period", update_period, Option<String>);
add_field_method_get_set!(fields, "update_frequency", update_frequency, Option<String>);
add_field_method_get_set!(fields, "generator", generator, Option<String>);
add_field_method_get_rc!(fields, "image", image);
add_field_method_set_rc_option!(fields, "image", image, Image);
add_field_method_get_rc!(fields, "articles", items);
fields.add_field_method_set("articles", |_, this, items: Vec<Item>| {
this.items = items
.into_iter()
.map(|i| Rc::new(RefCell::new(i)))
.collect();
Ok(())
});
}
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method("new", |_, _, ()| Ok(Channel::default()));
methods.add_method_mut("add_item", |_, this, item: Item| {
this.items.push(Rc::new(RefCell::new(item)));
Ok(())
});
}
}
#[derive(Default, Debug, Deserialize, Serialize, Clone)]
pub struct AtomLink {
href: Option<String>,
rel: Option<String>,
#[serde(rename = "type")]
mime_type: Option<String>,
}
implement_from_lua!(AtomLink);
impl UserData for AtomLink {
fn add_fields<'lua, F: UserDataFields<'lua, Self>>(fields: &mut F) {
add_field_method_get_set!(fields, "href", href, Option<String>);
add_field_method_get_set!(fields, "rel", rel, Option<String>);
add_field_method_get_set!(fields, "mime_type", mime_type, Option<String>);
}
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method("new", |_, _, ()| Ok(AtomLink::default()));
}
}
#[derive(Default, Debug, Deserialize, Serialize, Clone)]
pub struct Image {
url: Option<String>, // Option for missing fields
title: Option<String>,
link: Option<String>,
width: Option<u32>,
height: Option<u32>,
}
implement_from_lua!(Image);
impl UserData for Image {
fn add_fields<'lua, F: UserDataFields<'lua, Self>>(fields: &mut F) {
add_field_method_get_set!(fields, "url", url, Option<String>);
add_field_method_get_set!(fields, "title", title, Option<String>);
add_field_method_get_set!(fields, "link", link, Option<String>);
add_field_method_get_set!(fields, "width", width, Option<u32>);
add_field_method_get_set!(fields, "height", height, Option<u32>);
}
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method("new", |_, _, ()| Ok(Image::default()));
}
}
/// Lua object representing an RSS item as Article
#[derive(Default, Debug, Deserialize, Serialize, Clone)]
pub struct Item {
pub title: Option<String>, // Marked Option
pub link: Option<String>,
#[serde(rename = "dc:creator")]
pub creator: Option<String>,
#[serde(rename = "pubDate")]
pub pub_date: Option<String>,
#[serde(rename = "category", default)]
pub categories: Vec<String>,
pub guid: Option<Guid>,
pub description: Option<String>,
}
impl Item {
pub fn new(
guid: &str,
creator: &str,
categories: &str,
title: &str,
link: &str,
pub_date: &str,
description: &str,
) -> Item {
Item {
title: Some(title.to_string()),
link: Some(link.to_string()),
creator: Some(creator.to_string()),
pub_date: Some(pub_date.to_string()),
categories: categories.split(',').map(|s| s.to_string()).collect(),
guid: Some(Guid {
is_perma_link: Some(true),
value: Some(guid.to_string()),
}),
description: Some(description.to_string()),
}
}
}
implement_from_lua!(Item);
impl UserData for Item {
fn add_fields<'lua, F: UserDataFields<'lua, Self>>(fields: &mut F) {
add_field_method_get_set!(fields, "title", title, Option<String>);
add_field_method_get_set!(fields, "link", link, Option<String>);
add_field_method_get_set!(fields, "creator", creator, Option<String>);
add_field_method_get_set!(fields, "pub_date", pub_date, Option<String>);
add_field_method_get_set!(fields, "categories", categories, Vec<String>);
add_field_method_get_set!(fields, "guid", guid, Option<Guid>);
add_field_method_get_set!(fields, "description", description, Option<String>);
}
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method("new", |_, _, ()| Ok(Item::default()));
}
}
#[derive(Default, Debug, Deserialize, Serialize, Clone)]
pub struct Guid {
#[serde(rename = "isPermaLink")]
pub is_perma_link: Option<bool>,
#[serde(rename = "$value")]
pub value: Option<String>,
}
implement_from_lua!(Guid);
impl UserData for Guid {
fn add_fields<'lua, F: UserDataFields<'lua, Self>>(fields: &mut F) {
add_field_method_get_set!(fields, "is_perma_link", is_perma_link, Option<bool>);
add_field_method_get_set!(fields, "value", value, Option<String>);
}
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method("new", |_, _, ()| Ok(Guid::default()));
}
}

57
src/scheduler.rs
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@ -1,57 +0,0 @@
use anyhow::Result;
use chrono::prelude::*;
use chrono::Utc;
use log::debug;
use log::error;
use std::str::FromStr;
use std::thread;
use crate::scripting::ScriptingEngine;
pub struct Scheduler {
engine: ScriptingEngine,
}
impl Scheduler {
pub fn new(scripting: ScriptingEngine) -> Result<Self> {
Ok(Self { engine: scripting })
}
pub fn new_with_db(scripting: ScriptingEngine) -> Self {
Self { engine: scripting }
}
/// Example of a cron expression every minute: `0/1 * * * *`
pub fn schedule(&mut self, cron_expr: &str) -> Result<()> {
let schedule = cron::Schedule::from_str(cron_expr).unwrap();
while let Some(next) = schedule.upcoming(Utc).next() {
debug!("Scheduled task has started running at {}", Local::now());
self.engine.execute_all_routes()?;
debug!("Successfully executed all routes at {}", Local::now());
// Calculate the delta between now and the next scheduled run
let local: DateTime<Local> = DateTime::from(next);
let now = Utc::now();
// TODO: Check if scheduling 1 minute after now to prevent scheduling the same minute again
let until = next - now + chrono::Duration::minutes(1);
let sleep_time = match until.to_std() {
Ok(duration) => duration,
Err(_) => {
error!("Missed schedule, scheduling next run");
error!("A script took too long to run, consider increasing the interval or there may be a misbehaving script");
let next = schedule.upcoming(Utc).next().unwrap();
let until = next - now;
until.to_std().unwrap()
}
};
debug!("Next run UTC: {:?}", next);
debug!("Next run local: {:?}", local);
thread::sleep(sleep_time);
}
Ok(())
}
}

342
src/scripting.rs
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@ -1,342 +0,0 @@
use crate::database::Database;
use crate::rss_parser::{Channel, Item, Rss};
use crate::REDIS;
use crate::{html_parser::HtmlParser, rss_parser::AtomLink};
use redis::Commands;
use log::{debug, error, info, trace, warn};
use mlua::{
chunk, ExternalResult, Function, Lua, MetaMethod, Result, Table, UserData, UserDataMethods
};
use std::collections::HashMap;
pub struct ScriptingEngine {
lua: Lua,
db: Database,
}
impl ScriptingEngine {
pub fn new() -> Self {
let db = Database::new();
Self {
lua: Lua::new(),
db,
}
}
pub fn new_with_db(db: Database) -> Self {
Self {
lua: Lua::new(),
db,
}
}
pub fn load_all_scripts(&self) -> Result<()> {
// Look in the `scripts` directory for all Lua scripts
// and load them into the Lua environment
let scripts = std::fs::read_dir("scripts")?;
for script in scripts {
let script = script?;
if script.file_type()?.is_dir()
|| script.file_name().to_str().unwrap().starts_with(".")
|| !script.file_name().to_str().unwrap().ends_with(".lua")
{
continue;
}
let script_path = script.path();
let script_path = script_path.to_str().unwrap();
let script = std::fs::read_to_string(script_path)?;
self.load_script(&script)?;
}
Ok(())
}
pub fn load_script(&self, script: &str) -> Result<()> {
match self.lua.load(script).exec() {
Ok(_) => Ok(()),
Err(err) => {
//TODO: Should this be an error and stop loading everything?
error!("Error loading script: {}", err);
error!("Not loading script:\n{}", script);
Ok(())
}
}
}
pub fn load_script_with_return(&self, script: &str) -> Result<String> {
let result = self.lua.load(script).eval::<String>();
match result {
Ok(result) => Ok(result),
Err(err) => {
error!("Error loading script: {}", err);
Err(err)
}
}
}
pub fn load_globals(&self) -> Result<()> {
macro_rules! add_constructor {
($name:literal, $constructor:ident) => {
let constructor = self
.lua
.create_function(|_, ()| Ok($constructor::default()))?;
self.lua.globals().set($name, constructor)?;
};
}
macro_rules! add_constructor_new {
($name:literal, $constructor:ident) => {
let constructor = self.lua.create_function(|_, ()| Ok($constructor::new()))?;
self.lua.globals().set($name, constructor)?;
};
}
macro_rules! add_global {
($name:literal, $value:expr) => {
self.lua.globals().set($name, $value)?;
};
}
add_global!("log", Log);
//TODO: This is an async function... may be able to be used, but not on a tokio thread
//add_global!("get", self.lua.create_async_function(|_, url: String| async move {
// debug!("Making a GET request to {}", url);
// let response = reqwest::get(&url)
// .await
// .and_then(|response| response.error_for_status())
// .into_lua_err()
// .unwrap();
// debug!("Response: {:?}", response);
// Ok(response.text().await.unwrap())
//})?);
add_global!(
"get",
self.lua.create_function(|_, url: String| {
debug!("Making a GET request to {}", url);
let response = reqwest::blocking::get(&url)
.and_then(|response| response.error_for_status())
.into_lua_err()
.unwrap();
debug!("Response: {:?}", response);
Ok(response.text().unwrap())
})?
);
add_global!(
"sleep",
self.lua.create_function(|_, milliseconds: u64| {
debug!("Sleeping for {} milliseconds", milliseconds);
std::thread::sleep(std::time::Duration::from_millis(milliseconds));
Ok(())
})?
);
add_constructor!("HtmlParser", HtmlParser);
add_constructor!("Feed", Rss);
add_constructor!("Channel", Channel);
add_constructor!("AtomLink", AtomLink);
add_constructor!("Article", Item);
let database = Database::new();
self.lua.globals().set("db", database)?;
self.lua.globals().set("routes", self.lua.create_table()?)?;
let add_route = chunk! {
function add_route(table, route)
log:info("Adding route " .. route .. " to table " .. table)
if string.sub(route, 1, 1) == "/" then
route = string.sub(route, 2)
end
routes[route] = table
end
};
self.lua.load(add_route).exec()?;
Ok(())
}
/// Execute all of the routes that are registered
pub fn execute_all_routes(&mut self) -> Result<()> {
let routes = self.get_routes().unwrap();
debug!("Executing all lua script routes");
debug!("Routes: {:?}", routes);
for (name, route) in routes {
debug!("Executing route: {}", name);
let ret = match self.execute_route_function(&route, &name) {
Ok(ret) => ret,
Err(_) => {
error!("Removing misbehaving route: {}", name);
self.remove_route(&name)?;
continue;
}
};
let result = ret.0;
let feed = ret.1;
trace!("Route {} executed with result: {}", name, result);
let _: () = match REDIS.lock().unwrap().set(name, result) {
Ok(result) => result,
Err(err) => {
error!("Error setting key in Redis: {}", err);
continue;
}
};
//TODO: Put on another thread?
debug!("Inserting articles into database");
let channel = feed.channel;
let articles = &channel.borrow().items;
for article in articles {
let article = article.borrow();
match self.db.insert_article(&article) {
Ok(_) => (),
Err(_) => continue,
}
}
debug!("Finished inserting articles into database");
}
Ok(())
}
/// Execute the route function from the object route passed in
///
/// # Arguments
///
/// * `route_name` - The name of the route to execute
pub fn execute_route_function(
&self,
obj_name: &str,
route_name: &str,
) -> Result<(String, Rss)> {
let route_obj: Table = match self.lua.globals().get(obj_name) {
Ok(route) => route,
Err(_) => {
error!("Object {} does not exist", obj_name);
return Ok(("".to_string(), Rss::default()));
}
};
let route_func: Function = match route_obj.get("route") {
Ok(route) => route,
Err(_) => {
error!("Route {} does not have a route function", obj_name);
error!("Removing route {}", obj_name);
self.remove_route(route_name)?;
return Ok(("".to_string(), Rss::default()));
}
};
let result = match route_func.call::<_, (String, Rss)>(()) {
Ok(result) => result,
Err(e) => {
// Missing the right return values drops down here
error!("Error executing route function for route {}", obj_name);
error!("Lua error: {}", e);
return Err(mlua::Error::external("Error executing route function"));
}
};
Ok(result)
}
pub fn get_routes(&self) -> Result<HashMap<String, String>> {
let routes = self
.lua
.globals()
.get::<_, HashMap<String, String>>("routes")?;
Ok(routes)
}
pub fn remove_route(&self, route: &str) -> Result<()> {
let remove_route = chunk! {
routes[$route] = nil
};
self.lua.load(remove_route).exec()?;
debug!("Route {} removed", route);
debug!("Routes: {:?}", self.get_routes()?);
Ok(())
}
}
#[derive(Default)]
pub struct Log;
impl UserData for Log {
fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method("info", |_, _, msg: String| {
info!("{}", msg);
Ok(())
});
methods.add_method("debug", |_, _, msg: String| {
debug!("{}", msg);
Ok(())
});
methods.add_method("warn", |_, _, msg: String| {
warn!("{}", msg);
Ok(())
});
methods.add_method("error", |_, _, msg: String| {
error!("{}", msg);
Ok(())
});
methods.add_meta_function(MetaMethod::Call, |_, ()| Ok(()));
}
}
#[cfg(test)]
mod tests {
use mlua::chunk;
use rusqlite::Connection;
use super::*;
use crate::rss_parser::Guid;
use crate::rss_parser::Item as Article;
#[test]
fn test_get_article_by_guid_from_lua() -> Result<()> {
let conn = match Connection::open_in_memory() {
Ok(conn) => conn,
Err(err) => {
return Err(mlua::Error::external(err));
}
};
let db = Database::new_with_conn(conn);
let article = Article {
title: Some("Test".to_string()),
guid: Some(Guid {
value: Some("https://techcrunch.com/?p=2877786".to_string()),
is_perma_link: Some(false),
}),
creator: None,
categories: vec![],
link: Some("https://example.com".to_string()),
pub_date: Some("2021-01-01T00:00:00Z".to_string()),
description: Some("Test".to_string()),
};
let ret = db.insert_article(&article);
assert!(ret.is_ok());
let script = chunk! {
local db = $db;
local article = db:get_article_by_guid("https://techcrunch.com/?p=2877786");
return article;
};
let engine = ScriptingEngine::new();
engine.load_globals()?;
let ret = engine.lua.load(script).eval::<Article>()?;
assert_eq!(ret.title.unwrap(), "Test");
assert_eq!(
ret.guid.unwrap().value.unwrap(),
"https://techcrunch.com/?p=2877786"
);
assert_eq!(ret.link.unwrap(), "https://example.com");
assert_eq!(ret.pub_date.unwrap(), "2021-01-01T00:00:00Z");
assert_eq!(ret.description.unwrap(), "Test");
Ok(())
}
}